CN105638119A - Double-fluted disc driving knotter - Google Patents

Abstract

The invention discloses a knotter driven by double toothed disks, and relates to the technical field of harvesting and bundling of straw or grass. The invention includes a small toothed disk, a knotter bracket, a large toothed disk, and a knife arm assembled on the knotter bracket. , buckle pliers bite mechanism R and rope gripper driving mechanism Q; the compound toothed disc driven by the double toothed disc is divided into a small toothed disc and a large toothed disc, and the small toothed disc and the large toothed disc are coaxially fixed on the knotter Both ends of the main shaft shaft hole balance the force on the main shaft of the knotter and improve the working stability of the knotter; 3 rope clamping notches are set on the rope clamping disc to increase the length of the rope cutting blade to slide and cut the bundled rope , so that the rope-cutting action of the knotter is reliable; the knife arm roller rolls along the curved surface of the space contour, and is in line contact with the curved surface of the space contour of the cam surface, so that the bearing capacity is greater and the wear is reduced. The natal Buddha has the characteristics of reasonable structure, convenient processing and assembly, low manufacturing cost, and reliable formation.

Description

A knotter driven by a double toothed disc

technical field

The invention relates to the technical field of straw or pasture harvesting and bundling, in particular to a knotter driven by double toothed discs.

Background technique

The square bale baler is widely used in the collection and bundling of rice straw and dry green forage in rural areas and pastures. The knotter is the core component of the square bale baler, and its main function is to send the rope feeding mechanism to the The rope clamping is used to complete the actions required for bundling and knotting, such as wrapping the buckle, biting the rope, cutting the rope, and breaking the buckle to form a knot. Tie the two ends of the rope into a dead knot to prevent the compressed bale from loosening. The bundled and knotted bales have a high density, which is convenient for transportation and storage, and is very conducive to the utilization of biomass energy such as straw.

At present, the most widely used type C and D knotters, foreign square bale baler manufacturers have relatively mature knotter design and manufacturing technology and knotter invention patents, such as German CLAAS company, RasspeSystemtechnik company, the United States JohnDeer et al. Such as the European EP1532859 (A1) patent, the D-type single-knot knotter designed by RotoleDavidVincent, which was bought out by Deere Company; Domestic square baler baler manufacturers rely on imported foreign knotters to produce balers for a long time, and the price of knotters remains high, monopolizing the domestic square bale baler market. In addition, these knotters are all integrated knotters, which have the disadvantages of complex spatial structure, difficult manufacturing, and high assembly precision requirements. In addition, multiple structures are concentrated on one part, which increases the load on the strength of the part, and there is a deficiency that the whole part needs to be replaced due to the damage of one structure.

Chinese invention patent 201110001685.8 designed a humanoid two-finger knotter, which is installed on the main shaft of the knotter at the end of the baler, and can simulate the gripping of the rope sent by the rope feeding mechanism with two fingers of a human hand, and complete the process. The action of taking the rope, clamping the rope, wrapping the rope, biting the rope, cutting the rope and tripping required for bundling and knotting realizes the automatic bundling and knotting of the compacted bales, and improves the defect that the knotter bracket is inconvenient to manufacture. Compared with foreign knotters, the space structure of the invention is relatively simple, which reduces the manufacturing cost.

However, in the prior art, the composite chainring sets the incomplete bevel gear for knotting drive and the incomplete bevel gear for clamping rope drive on one side, which results in uneven force, complex spatial structure, difficult manufacturing and high assembly precision requirements; The rope feeding mechanism cannot directly feed the bundled rope into the rope clamping notch, and when cutting the rope, the position of the rope end is close to the upper part of the blade, which is not conducive to cutting the rope end; The shock wave is large, and the long-term use of the cylindrical cam wears a lot, which affects the service life of the knotter.

For this reason, the present invention proposes an automatic knotting device for bundling crop stalks or forage grass into rectangular bales with ropes, which has the characteristics of reasonable structure, easy processing and assembly, low manufacturing cost, and reliable knot formation. The knotter solves the problem that the square bale baler produced by domestic enterprises is restricted by the imported knotter.

Contents of the invention

The technical problem to be solved by the present invention is that the uneven force of the composite toothed plate leads to complex spatial structure of the knotter, which is difficult to manufacture and requires high assembly precision; when the rope feeding mechanism cuts the rope, the position of the rope head is close to the upper part of the blade, which is not conducive to cutting The rope head; the cylindrical cam wears a lot, which affects the service life of the knotter. The present invention provides a double tooth disc drive knotter with novel structure and low manufacturing cost, which overcomes the shortcomings of foreign knotters such as complex space structure, high manufacturing difficulty and high assembly precision requirements, and has the advantages of reasonable structure, easy processing, assembly and manufacture. The characteristics of low cost and reliable formation.

The technical solution of the present invention is: divide the composite toothed plate of the double toothed plate into two parts, the small toothed plate and the large toothed plate, the small toothed plate drives the clip rope to drive the incomplete bevel gear, and the large toothed plate drives the knotting Drive the incomplete bevel gear and drive the knife arm to move. The present invention includes a small toothed plate, a knotter bracket, a large toothed plate, a knife arm assembled on the knotter bracket, a buckle-wrapping mechanism R and a rope clamp drive mechanism Q; the small toothed plate and the large toothed plate The toothed disc is coaxially fixed at both ends of the knotter spindle shaft hole on the knotter bracket; the buckle-wrapping mechanism R and the rope gripper driving mechanism Q are respectively mounted on the knotter bracket The two sides of the large chainring; the circumference of the large toothed disc is provided with a knotted driving incomplete bevel gear, the knife arm roller at the top of the knife arm cooperates with the grooved cam on the inner side of the large toothed plate, and the knotted driven bevel gear is connected to the driven bevel gear. The knotting drive incomplete bevel gear meshes; the circumference of the small toothed disc is provided with a clamp rope drive incomplete bevel gear, and the clamp rope driven bevel gear meshes with the clamp rope drive incomplete bevel gear.

The rope clamp driving mechanism Q drives the rope clamp J, and the outer edge of the rope clamp disc of the rope clamp J is evenly distributed with 3 clamping notches, which are fixed with the driven bevel gear of the clamping rope through the worm shaft. The number of ends of the involute worm of the knot is 2, and the number of teeth of the helical gear meshed with the involute worm is 6.

The roller of the knife arm is cylindrical, and the cam surface of the grooved cam is a curved surface of space contour. Surface rolling. Both ends of the knife arm roller are chamfered in an arc shape.

The profile of the cylindrical cam on the knotter bracket that cooperates with the buckle-wrapping mechanism R is an Archimedes helical cam.

The establishment process of the space profile curved surface is as follows: the center of the upper surface of the roller on the rope-cutting knife arm is used as a vertical line to the swing central axis, the intersection point is used as the center O1 of the moving coordinate system, and the vertical line made by the roller to the rotational central axis is used as The X-axis of the moving coordinate system, the rotating axis is used as the Y-axis, and the coordinate system is established according to the right-hand rule; a perpendicular line is drawn to the central axis of the gear plate rotation through the O1 point, and the intersection point is used as the center O of establishing the static coordinate system, which is parallel to the dynamic coordinate system X1 The direction parallel to Y1 is used as the Y axis, and the static coordinate system is established according to the right-hand rule; at the same time, the dynamic coordinate system rotates clockwise around the static coordinate system at an angle of β; the initial position, the dynamic coordinate system is also equivalent to the static coordinate system Translate m unit lengths in the negative direction of the Z axis, and translate n unit lengths in the negative direction of the Y axis; suppose the angle between the knife arm and the moving coordinate system at the initial position is θ0, and the angle turned by when swinging is θ, the knife arm The center point of the upper surface of the roller is P, and the center point of the lower surface is Q. At the same time, the length of the knife arm is set as l, and the distance between P and Q is set as f; therefore, the coordinates of points P and Q in the moving coordinate system are P( lcos(θ+θ0),-lsin(θ+θ0),0),Q((l-f)cos(θ+θ0),-(l-f)sin(θ+θ0),0);

$\begin{array}{c}\left[\begin{array}{c}\mathrm{<span\; class="notranslate">\; x</span>}\\ \mathrm{<span\; class="notranslate">\; the\; y</span>}\\ \mathrm{<span\; class="notranslate">\; z</span>}\\ \mathrm{<span\; class="notranslate">\; 1</span>}\end{array}\right]<span\; class="notranslate">\; =</span>\left[\begin{array}{cccc}\mathrm{<span\; class="notranslate">\; 1</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}\\ \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 1</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& <span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; no</span>}\\ \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 1</span>}& <span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; m</span>}\\ \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 1</span>}\end{array}\right]\left[\begin{array}{cccc}\mathrm{<span\; class="notranslate">\; 1</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}\\ \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}& <span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; no</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}\\ \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}& \mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}\\ \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 1</span>}\end{array}\right]\left[\begin{array}{cccc}\mathrm{<span\; class="notranslate">\; 1</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}\\ \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 1</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; no</span>}\\ \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 1</span>}& \mathrm{<span\; class="notranslate">\; m</span>}\\ \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 1</span>}\end{array}\right]\left[\begin{array}{c}\mathrm{<span\; class="notranslate">\; x</span>}\mathrm{<span\; class="notranslate">\; 1</span>}\\ \mathrm{<span\; class="notranslate">\; the\; y</span>}\mathrm{<span\; class="notranslate">\; 1</span>}\\ \mathrm{<span\; class="notranslate">\; z</span>}\mathrm{<span\; class="notranslate">\; 1</span>}\\ \mathrm{<span\; class="notranslate">\; 1</span>}\end{array}\right]\\ <span\; class="notranslate">\; =</span>\left[\begin{array}{c}\mathrm{<span\; class="notranslate">\; x</span>}\mathrm{<span\; class="notranslate">\; 1</span>}\\ \mathrm{<span\; class="notranslate">\; the\; y</span>}\mathrm{<span\; class="notranslate">\; 1</span>}\mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; z</span>}\mathrm{<span\; class="notranslate">\; 1</span>}\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; a</span>}\mathrm{<span\; class="notranslate">\; c</span>}\mathrm{<span\; class="notranslate">\; o</span>}\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; b</span>}\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; no</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; no</span>}\\ \mathrm{<span\; class="notranslate">\; the\; y</span>}\mathrm{<span\; class="notranslate">\; 1</span>}\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; z</span>}\mathrm{<span\; class="notranslate">\; 1</span>}\mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; a</span>}\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; b</span>}\mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; m</span>}\\ \mathrm{<span\; class="notranslate">\; 1</span>}\end{array}\right]\end{array}$

Among them, x1, y1, z1 are the coordinate points in the moving coordinate system respectively.

Bring in the coordinates of the connecting points P and Q as

$\begin{array}{cc}\mathrm{<span\; class="notranslate">\; P</span>}& \left[\begin{array}{c}\mathrm{<span\; class="notranslate">\; l</span>}\mathrm{<span\; class="notranslate">\; cos</span>}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; \&theta;</span>}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; \&theta;</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; )</span>\\ <span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; l</span>}\mathrm{<span\; class="notranslate">\; sin</span>}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; \&theta;</span>}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; \&theta;</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; )</span>\mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; a</span>}\mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; b</span>}\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; no</span>}\\ <span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; l</span>}\mathrm{<span\; class="notranslate">\; sin</span>}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; \&theta;</span>}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; \&theta;</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; )</span>\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; a</span>}\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; b</span>}\mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; no</span>}\\ \mathrm{<span\; class="notranslate">\; 1</span>}\end{array}\right]\end{array}$

$\begin{array}{cc}\mathrm{<span\; class="notranslate">\; Q</span>}& \left[\begin{array}{c}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; f</span>}<span\; class="notranslate">\; )</span>\mathrm{<span\; class="notranslate">\; c</span>}\mathrm{<span\; class="notranslate">\; o</span>}\mathrm{<span\; class="notranslate">\; the\; s</span>}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; \&theta;</span>}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; \&theta;</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; )</span>\\ <span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; f</span>}<span\; class="notranslate">\; )</span>\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; no</span>}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; \&theta;</span>}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; \&theta;</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; )</span>\mathrm{<span\; class="notranslate">\; c</span>}\mathrm{<span\; class="notranslate">\; o</span>}\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; a</span>}\mathrm{<span\; class="notranslate">\; c</span>}\mathrm{<span\; class="notranslate">\; o</span>}\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; b</span>}\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; no</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; no</span>}\\ <span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; f</span>}<span\; class="notranslate">\; )</span>\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; no</span>}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; \&theta;</span>}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; \&theta;</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; )</span>\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; no</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; a</span>}\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; b</span>}\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; m</span>}\\ \mathrm{<span\; class="notranslate">\; 1</span>}\end{array}\right]\end{array}$

The knife arm rotates through the angles during the cam push and return stages:

Thrust turn angle

angle of return $\mathrm{\&theta;}={\mathrm{\&theta;}}_1+\frac{{\mathrm{\&theta;}}_1}{2\mathrm{\&pi;}}\mathrm{the\; s}i\mathrm{no}\&lsqb;\frac{2\mathrm{\&pi;}(\mathrm{\&beta;}-\mathrm{\&phi;}}{\mathrm{\&omega;}}\&rsqb;-\frac{{\mathrm{\&theta;}}_1}{\mathrm{\&omega;}}(\mathrm{\&beta;}-\mathrm{\&phi;})$

in:

θ ₁ —Rope cutting knife arm swing angle;

- Thrust starting phase;

Φ—thrust end phase;

ω—backhaul end phase.

One end of the involute worm is provided with a nut-shaped boss B.

The knotter bracket also includes a worm shaft hole, a knotting nozzle shaft hole and a rope clamp disc shaft hole; the knotting nozzle shaft hole and the knotter spindle shaft hole are arranged in a non-orthogonal intersecting axis, and the worm The shaft hole and the shaft hole of the knotter main shaft are vertically intersecting, the knife arm shaft hole and the knotting mouth shaft hole space are arranged perpendicular to each other, the rope clamp disc shaft hole and the knotter main shaft The shaft holes are vertically arranged in space, and the shaft holes of the main shaft of the knotter and the rope clamping disc are arranged vertically in space.

The knotter bracket also includes a worm shaft hole, a knotting nozzle shaft hole and a clamp, and a rope reel shaft hole; the knotting nozzle shaft hole and the knotter spindle shaft hole are arranged in a non-orthogonal intersecting axis, and the The shaft hole of the worm shaft and the shaft hole of the main shaft of the knotter are vertically intersecting. The shaft hole of the knife arm and the shaft hole of the knotting mouth are arranged perpendicular to each other. The hole and the knotter spindle shaft hole are vertically arranged in space.

The axis line d of the shaft hole of the knotting mouth and the axis line a of the shaft hole axis of the knotter spindle are at an angle of 98°, and the axis line d of the shaft hole of the knotting mouth and the axis line of the shaft hole of the worm The c space stagger angle is 30°, and the included angle between the axis line e of the shaft hole of the rope clamping disc and the axis line c of the shaft hole of the worm is 72°.

The knife arm is hinged on the hole of the knife arm shaft through the knife arm shaft, and the knife arm shaft is supported on the knotter bracket by a pair of sliding bearings and a pair of first thrust ball bearings installed symmetrically. In the shaft hole, the two ends of the knife arm shaft are fixed by bolts.

The transmission ratio between the involute worm and the helical gear is 3, and 3 rope clamping notches are evenly distributed on the outer edge of the rope clamping disc; the number of heads of the involute worm is 2, and the The number of teeth of the helical gear is 6.

Bosses are arranged between the end face of the rope clamping disc, the end face of the helical gear and the end face of the shaft hole of the rope clamping disc on the knotter bracket. Or a second thrust ball bearing is installed between the helical gear and the end face of the shaft hole of the rope clamping disc.

The beneficial effects of the present invention are:

1. Divide the compound toothed disc of the double toothed drive knotter into a small toothed plate and a large toothed plate. The small toothed plate and the large toothed plate are coaxially fixed at both ends of the shaft hole of the knotter’s main shaft, so that the knotter’s main shaft is Force balance improves the working stability of the knotter.

2. By installing the driving mechanism Q of the rope gripper and the clamping mechanism R of the buckle on different sides of the knotter bracket, the space of the knotter bracket is fully utilized, and the space parameter matching of the knotter is more flexible and reasonable.

3. There are 3 rope clamping notches on the rope clamping plate. When the rope clamping plate clamps the rope from the initial position to the end position of the rope clamping, the rope reaches the middle position of the blade of the rope cutting blade, and the rope cutting blade is enlarged. Sliding cuts the length of the bundled rope, so that the knotter cuts the rope reliably.

4. The knife arm roller rolls along the curved surface of the space contour, and is in line contact with the curved surface of the space contour of the cam surface, so that the bearing capacity is greater and the wear is reduced. At the same time, the setting of the space profile makes the knife arm move with sinusoidal acceleration, which theoretically eliminates the stress impact between the roller of the knife arm and the surface of the cam.

5. The arrangement of the axial center lines of the shaft holes on the knotter bracket reduces the manufacturing difficulty of the shaft holes of the knotter bracket, and helps to ensure the machining accuracy between the angles of each shaft hole.

6. By adopting the combined structure of sliding bearing and thrust ball bearing, the end face of the shaft hole of the knife arm on the knotter bracket does not rub against the end face of the shaft hole of the knife arm, which is convenient for fastening the bolts at both ends of the shaft of the knife arm and strictly guarantees the installation of the knife arm position while making it flexible to rotate.

7. One end of the involute worm is provided with a nut-shaped boss, which greatly facilitates the assembly and disassembly of the involute worm.

8. Bosses are provided between the end face of the rope clamping disc, the end face of the helical gear and the end face of the shaft hole of the rope clamping disc on the knotter bracket, which reduces friction during the working process of the knotter and facilitates transmission.

9. Thrust bearings can also be installed between the helical gear and the end face of the shaft hole of the rope clamping disc to replace the boss, so as to reduce the friction between the helical gear and the end face of the shaft hole of the rope clamping disc during the working process of the knotter. The friction between them is good for transmission.

Description of drawings

Fig. 1 is an isometric front view of an embodiment of a knotter driven by double toothed discs.

Fig. 2 is a structural layout diagram of the small toothed disc of an embodiment.

Fig. 3 is a structural layout diagram of the large toothed disc of an embodiment.

Fig. 4 is a schematic diagram of the structure of the knife arm in one embodiment.

Fig. 5 is a two-dimensional cross-sectional view of the knife arm shaft assembly of an embodiment.

Fig. 6 is a schematic structural view of a buckle-wrapping and biting mechanism R of an embodiment.

Figure 7 is an isometric view of the construction of the rope gripper of one embodiment.

Fig. 8 is an isometric view of the configuration of the driving mechanism of the rope gripper according to one embodiment.

Fig. 9 is an assembly diagram of a knotter driven by double toothed discs in one embodiment.

Fig. 10 is a schematic diagram of the boss of the shaft hole of the rope clamping reel according to one embodiment.

Fig. 11 is a side sectional view of F-F in Fig. 9 .

Fig. 12 is a schematic diagram a of the shaft hole of the knotter bracket of an embodiment.

Fig. 13 is a schematic diagram b of the shaft hole of the knotter bracket of an embodiment.

Fig. 14 is an angle relationship diagram a of the shaft hole of the knotter bracket according to an embodiment.

Fig. 15 is an angle relationship diagram b of the shaft hole of the knotter bracket according to an embodiment.

Fig. 16 is an angle relationship diagram c of the shaft hole of the knotter bracket according to an embodiment.

Fig. 17 is a schematic diagram of the knife arm roller.

Fig. 18 is a schematic front view of a German D-type knotter in the prior art.

Fig. 19 is a schematic view of the back of a German D-type knotter in the prior art.

In the figure, 1, small tooth plate; 2, knotter bracket; 201, knotter spindle shaft hole; 202, knife arm shaft hole; 203, worm shaft hole; 204, knotting nozzle shaft hole; 205 clip Rope reel shaft hole; 206, rope clamp moving piece pendulum shaft hole; 207, hook pliers pressure plate shaft hole; 208, rope clamping moving piece pressure plate shaft hole; 209, boss; 2010, fixed piece bayonet; 3, Large tooth plate; 4. Grooved cam; 5. Incomplete bevel gear for knotting drive; 6. Knife arm roller; 7. Knife arm; 8. Knife arm shaft; 9. Knotted driven bevel gear; 10. Hook Clamp pressing plate; 1001, hook clamp pressing plate shaft; 11, compression spring; 12, cylindrical cam; 13, knotting nozzle; 14, hook pliers; 15, rope cutting blade; 16, rope clamping disc; 18. Worm shaft; 19. Clamp rope driven bevel gear; 20. Clamp rope driven incomplete bevel gear; 21. Clamp moving piece; 22. Clamp moving piece pressure plate; 23. Clamp moving piece pendulum shaft; 24. 25. Involute worm; 2501. Nut-shaped boss; 26. Helical gear; 27. Clamping disc shaft; 28. First thrust ball bearing; 29. Sliding bearing; 30. Knife arm gap; 31. The second thrust ball bearing: 32. The compound chainring.

detailed description

In describing the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" ” and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, with a specific configuration and operation, and therefore should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

The present invention will be described in further detail below in conjunction with the specific embodiments of the accompanying drawings, but the protection scope of the present invention is not limited thereto.

As shown in Figure 1, a double-sprocket driven knotter includes a small toothed disk 1, a knotter bracket 2, a large toothed disk 3, a knife arm 7 assembled on the knotter bracket 2, and a buckle-wrapping nipper mechanism. R, rope clamp J and its driving mechanism Q.

The small toothed disc 1 and the large toothed disc 3 are coaxially fixed at both ends of the knotter main shaft hole 201 on the knotter support 2 .

As shown in Figure 3, the knife arm 7 is hinged on the knife arm shaft hole 202 of the knotter bracket 2 through a pin shaft, and a grooved cam 4 is arranged on the inner side of the large toothed disc 3, and the knife arm The upper end of 7 withstands described grooved cam 4.

The buckle wrapping mechanism R and the rope clamp driving mechanism Q are respectively installed on both sides of the knotter bracket 2 .

The circumference of the large toothed disc 3 is provided with a knotted driving incomplete bevel gear 5, and the buckle clamp mechanism R is fixedly connected with the knotted driven bevel gear 9, and the knotted driven bevel gear 9 is connected with the knotted driven bevel gear 9. The knotting drives the incomplete bevel gear 5 meshes.

As shown in Figure 3, the knotting driven incomplete bevel gear 5 is installed on the said large toothed disc 3 (the said knotting pincer mechanism R is affixed to the knotting driven bevel gear 9, and the knotting driven bevel gear Gear 9 is meshed with the incomplete bevel gear 5 of the knotting drive) and is provided with a grooved cam 4, and the grooved cam 4 has a space profile curved surface, and the process of setting up the space profile curved surface is as follows: roll on the rope cutter arm Draw a vertical line from the center of the upper surface of the child to the swing center axis, the intersection point is the center O1 of the dynamic coordinate system, the vertical line drawn from the roller to the rotation center axis is the X axis of the dynamic coordinate system, and the rotation axis is the Y axis. Then establish a coordinate system; draw a vertical line to the central axis of the tooth disc rotation through O1, and the intersection point is used as the center O of the static coordinate system. The direction parallel to the X1 of the dynamic coordinate system is used as the X axis, and the direction parallel to Y1 is used as the Y axis. According to the right hand The rule establishes a static coordinate system; at the same time, the dynamic coordinate system rotates clockwise around the static coordinate system for one circle; the initial position, the dynamic coordinate system is also equivalent to the translation of the static coordinate system by 22 unit lengths in the negative direction of the Z axis, and 58 units in the negative direction of the Y axis The unit length is obtained; the angle between the knife arm and the moving coordinate system at the initial position is 5π/36, the angle turned during swing is θ, the center point of the upper surface of the knife arm roller is P, and the center point of the lower surface is Q. At the same time, the length of the knife arm is 64, and the distance between P and Q is set to 17; therefore, the coordinates of points P and Q in the moving coordinate system are P(64cos(θ+5π/36), -64sin(θ+5π/36 ),0),Q(47cos(θ+5π/36),-47sin(θ+5π/36),0);

$\begin{array}{c}\left[\begin{array}{c}\mathrm{<span\; class="notranslate">\; x</span>}\\ \mathrm{<span\; class="notranslate">\; the\; y</span>}\\ \mathrm{<span\; class="notranslate">\; z</span>}\\ \mathrm{<span\; class="notranslate">\; 1</span>}\end{array}\right]<span\; class="notranslate">\; =</span>\left[\begin{array}{cccc}\mathrm{<span\; class="notranslate">\; 1</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}\\ \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 1</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& <span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; no</span>}\\ \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 1</span>}& <span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; m</span>}\\ \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 1</span>}\end{array}\right]\left[\begin{array}{cccc}\mathrm{<span\; class="notranslate">\; 1</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}\\ \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}& <span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; no</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}\\ \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}& \mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}\\ \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 1</span>}\end{array}\right]\left[\begin{array}{cccc}\mathrm{<span\; class="notranslate">\; 1</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}\\ \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 1</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; no</span>}\\ \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 1</span>}& \mathrm{<span\; class="notranslate">\; m</span>}\\ \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 0</span>}& \mathrm{<span\; class="notranslate">\; 1</span>}\end{array}\right]\left[\begin{array}{c}\mathrm{<span\; class="notranslate">\; x</span>}\mathrm{<span\; class="notranslate">\; 1</span>}\\ \mathrm{<span\; class="notranslate">\; the\; y</span>}\mathrm{<span\; class="notranslate">\; 1</span>}\\ \mathrm{<span\; class="notranslate">\; z</span>}\mathrm{<span\; class="notranslate">\; 1</span>}\\ \mathrm{<span\; class="notranslate">\; 1</span>}\end{array}\right]\\ <span\; class="notranslate">\; =</span>\left[\begin{array}{c}\mathrm{<span\; class="notranslate">\; x</span>}\mathrm{<span\; class="notranslate">\; 1</span>}\\ \mathrm{<span\; class="notranslate">\; the\; y</span>}\mathrm{<span\; class="notranslate">\; 1</span>}\mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; z</span>}\mathrm{<span\; class="notranslate">\; 1</span>}\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; a</span>}\mathrm{<span\; class="notranslate">\; c</span>}\mathrm{<span\; class="notranslate">\; o</span>}\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; b</span>}\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; no</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; no</span>}\\ \mathrm{<span\; class="notranslate">\; the\; y</span>}\mathrm{<span\; class="notranslate">\; 1</span>}\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; z</span>}\mathrm{<span\; class="notranslate">\; 1</span>}\mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; a</span>}\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; b</span>}\mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; m</span>}\\ \mathrm{<span\; class="notranslate">\; 1</span>}\end{array}\right]\end{array}$

Bring in the coordinates of P and Q points as

$\begin{array}{cc}\mathrm{<span\; class="notranslate">\; P</span>}& \left[\begin{array}{c}\mathrm{<span\; class="notranslate">\; l</span>}\mathrm{<span\; class="notranslate">\; cos</span>}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; \&theta;</span>}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; \&theta;</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; )</span>\\ <span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; l</span>}\mathrm{<span\; class="notranslate">\; sin</span>}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; \&theta;</span>}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; \&theta;</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; )</span>\mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; a</span>}\mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; b</span>}\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; no</span>}\\ <span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; l</span>}\mathrm{<span\; class="notranslate">\; sin</span>}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; \&theta;</span>}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; \&theta;</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; )</span>\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; a</span>}\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; b</span>}\mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; no</span>}\\ \mathrm{<span\; class="notranslate">\; 1</span>}\end{array}\right]\end{array}$

$\begin{array}{cc}\mathrm{<span\; class="notranslate">\; Q</span>}& \left[\begin{array}{c}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; f</span>}<span\; class="notranslate">\; )</span>\mathrm{<span\; class="notranslate">\; c</span>}\mathrm{<span\; class="notranslate">\; o</span>}\mathrm{<span\; class="notranslate">\; the\; s</span>}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; \&theta;</span>}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; \&theta;</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; )</span>\\ <span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; f</span>}<span\; class="notranslate">\; )</span>\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; no</span>}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; \&theta;</span>}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; \&theta;</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; )</span>\mathrm{<span\; class="notranslate">\; c</span>}\mathrm{<span\; class="notranslate">\; o</span>}\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; a</span>}\mathrm{<span\; class="notranslate">\; c</span>}\mathrm{<span\; class="notranslate">\; o</span>}\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; b</span>}\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; no</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; no</span>}\\ <span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; l</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; f</span>}<span\; class="notranslate">\; )</span>\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; no</span>}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; \&theta;</span>}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; \&theta;</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}<span\; class="notranslate">\; )</span>\mathrm{<span\; class="notranslate">\; the\; s</span>}\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; no</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; a</span>}\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; b</span>}\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; m</span>}\\ \mathrm{<span\; class="notranslate">\; 1</span>}\end{array}\right]\end{array}$

In addition; the knife arm rotates through the angles during the cam push [0, π/3] and return [π/3, 2π/3] stages:

Thrust turn angle

angle of return $\mathrm{\&theta;}={\mathrm{\&theta;}}_1+\frac{{\mathrm{\&theta;}}_1}{2\mathrm{\&pi;}}\sin \&lsqb;\frac{2\mathrm{\&pi;}(\mathrm{\&beta;}-\mathrm{\&phi;}}{\mathrm{\&omega;}}\&rsqb;-\frac{{\mathrm{\&theta;}}_1}{\mathrm{\&omega;}}(\mathrm{\&beta;}-\mathrm{\&phi;})$

in:

θ ₁ —Rope cutting knife arm swing angle;

- Thrust starting phase;

Φ—thrust end phase;

ω—end phase of return trip

As shown in Figure 2, the circumference of the small sprocket 1 is provided with a rope clamp driving incomplete bevel gear 20 (the rope clamp driving mechanism Q is fixedly connected with the rope clamp driven bevel gear 19, and the clamp rope is driven from the The movable bevel gear 19 is meshed with the incomplete bevel gear 20 of the rope clamp drive, and the rope clamp drive mechanism Q includes a helical gear 26, and the helical gear 26 is fixedly connected with the rope clamp J through a rope clamp disc shaft 27 .

As shown in Figure 4, the knife arm 7 is assembled on the knife arm shaft shaft hole 202 through the knife arm shaft 8, and the grooved cam 4 drives the knife arm roller 6 to make the knife arm 7 rotate around the The axis of knife arm shaft 8 swings back and forth.

As shown in FIG. 4 , the knife arm roller 6 is cylindrical, and the cylindrical surface of the knife arm roller is in line contact with the space profile curved surface of the cam surface. As shown in FIG. 17 , both ends of the knife arm roller 6 are rounded and chamfered, which is beneficial to reduce the assembly requirements between the knife arm roller 6 and the grooved cam 4 and reduce wear.

As shown in Figure 5, the knife arm shaft 8 is supported in the stepped knife arm shaft shaft hole 202 on the knotter bracket 2 by a pair of symmetrically installed sliding bearings 29 and a pair of first thrust ball bearings 28. , the two ends of the knife arm shaft 8 are fixed by bolts. By adopting the combined structure of the sliding bearing 29 and the first thrust ball bearing 28, the end face of the shaft hole 202 of the knife arm does not rub against the end face of the shaft hole of the knife arm 7, so that the two sides of the shaft 8 of the knife arm are convenient. The bolts at the end are fastened to strictly ensure the installation position of the knife arm 7 and make it rotate flexibly.

As shown in Figure 6, the snapping mechanism R includes a knotting nozzle 13, a hook pliers 14, a cylindrical cam 12 on the knotter support 2 and a hook clamp pressing plate 10, and the top end of the knotting nozzle 13 passes through the The cam 12 is affixed to the driven bevel gear 9 for knotting, and the hook pliers 14 are hinged on the knotting nozzle 13 through a pin shaft. The pressing plate 10 is hinged on the hook clamping plate shaft hole 207 of the knotter bracket 2 through a pin shaft, and the compression spring 11 is sleeved on the hooking clamping plate shaft 1001 and fixed by screws for adjusting the force of the hooking clamping plate 10. pressure, the outline of the cylindrical cam 12 is an Archimedes helical cam, and during the rotation of the knotting nozzle 13, the hook rollers on the hook pliers are controlled by the Archimedes helical cam to complete Zhanghe movement.

As shown in FIG. 7 , the rope clamp J includes a rope clamp disc 16 , a rope clamp fixed piece 17 , a rope clamp movable piece 21 and a rope clamp movable piece pressing plate 22 . The clamping rope fixed piece 17 is stuck on the fixed piece bayonet 210 on the knotter bracket 2, and the clamping rope moving piece 21 is hinged on the knotter bracket 2 through the rope clamping moving piece pendulum shaft 23. On the pendulum shaft hole 206 of the rope clamp moving piece, one side of the rope clamp fixed piece 17 is pressed by the rope clamp moving piece pressure plate 22, and the rope clamp moving piece pressure plate 22 is hinged on the knotter bracket through a pin 2, on the final shaft hole 208 of the rope clip moving piece, during the rope clipping process of the knotter, the rotation of the rope clip disk 16 drives the rope clip moving piece 21 around the shaft of the rope clip moving piece pendulum shaft 23. heart swing.

As shown in Figure 8, the rope clamp driving mechanism Q includes an involute worm 25 and a helical gear 26, and the rope clamp driven bevel gear 19 and the involute worm 25 are fixed on the worm shaft 18 respectively. The two ends of the helical gear 26 are affixed to the rope clamping disc 16 through the rope clamping disc shaft 27, and the involute worm 25 meshes with the helical gear 26.

One end of the involute worm 25 is provided with a nut-shaped boss 2501 , which facilitates the assembly and disassembly of the involute worm 25 .

As shown in Figures 9 and 10, a boss 209 is provided between the end face of the rope clamping disc 16, the end face of the helical gear 26, and the end face of the clamping disc shaft hole 205 on the knotter bracket, to reduce knotting. The friction during the working process of the knotter is beneficial to the transmission. A second thrust ball bearing 31 may also be installed between the helical gear 26 and the end surface of the rope clamping disc shaft hole 205 instead of the boss, as shown in FIG. 11 .

As shown in Figures 1 and 8, the knotting mouth 13 is driven to rotate around the buckle by the knotting driving incomplete bevel gear 5 meshing with the knotting driven bevel gear 9, and the cylindrical cam 12 controls the Hook pliers with 14 clamps to bite the binding rope. The involute worm 25 drives the helical gear 26 to rotate through the engagement of the rope-clamping incomplete bevel gear 20 with the rope-clamping driven bevel gear 19 , driving the rope-clamping disc 16 to rotate. By installing the rope gripper driving mechanism Q and the buckle gripping mechanism R on both sides of the knotter bracket 2 respectively, the space of the knotter bracket 2 is fully utilized, and the knotter Spatial parameter matching is more flexible. The transmission ratio between the involute worm 25 and the helical gear 26 is 3, preferably the number of teeth of the involute worm 25 is 2, and the number of teeth of the helical gear 26 is 6. Three rope clamping notches 24 are evenly distributed on the outer edge of the rope clamping disc 16. In each knotting cycle, the small toothed disc 1 rotates one revolution, and the clamping rope clamp is driven by the driving mechanism Q of the rope clamping device. The 3 clamping notches 24 on the rope reel 16 turn over 120°, and the clamping rope of the rope reel 16 reaches the end position of the clamping rope from the initial position, so that the binding rope reaches the middle position of the blade of the rope cutting blade 15. Increase the length of the blade to slide and cut the bundled rope, so that the knotter cuts the rope reliably.

As shown in Figures 12 and 13, the knotter bracket 2 includes a knotter spindle shaft hole 201, a knife arm shaft hole 202, a worm shaft hole 203, a knotting nozzle shaft hole 204 and a rope clamping disc shaft hole 205 ; In order to reduce the manufacturing difficulty of the shaft holes on the knotter bracket 2 and ensure the machining accuracy between the angles of the shaft holes, the shaft center line d of the knotting nozzle shaft hole 204 and the shaft hole 201 of the knotter spindle The axis line a is arranged in a non-orthogonal intersecting axis, the axis line c of the worm shaft shaft hole 203 and the axis line a of the knotter main shaft axis hole 201 are arranged in a perpendicular intersecting axis, and the knife arm shaft hole The 202 axis b and the knotting nozzle axis hole 204 axis d are vertically arranged in space, the knife arm axis hole 202 axis b, the rope clamping disc axis hole 205 axis e and The axis lines a of the main shaft holes 201 of the knotter are vertically arranged in space. Taking the end surface of the shaft hole 201 of the knotter spindle as the projection plane of the front view, the angular relationship design of each shaft hole is shown in Figures 14, 15, and 16. The worm shaft shaft hole 203 is arranged on one side of the knotter support 2, and the worm shaft 18 is arranged in the worm shaft shaft hole 203, so that the clip rope driven bevel gear 19 fixed with the worm shaft 18 is incompatible with the clip rope drive. Complete bevel gear 20 mesh.

The axis line d of the knotting mouth shaft hole 204 and the axis line a of the knotter spindle hole 201 are at an angle of 98°, and the axis line c of the worm shaft hole 203 and the knotter spindle The axis line a of the axis hole 201 intersects at an angle of 90°, the axis line d of the knotting nozzle axis hole 204 and the axis line c of the worm axis hole 203 have a space intersection angle of 30°, and the axis hole of the rope clamping disc The included angle between the axis line e of 205 and the axis line c of the worm shaft hole 203 is 72°, the axis line b of the knife arm axis hole 202 and the axis line d of the knotting mouth axis hole 204 The included angle is 90°. By arranging the axis angles of the shaft holes of the knotter bracket 2 in the above-mentioned optimal arrangement, the power transmission of the rope clamping, buckle winding and rope cutting action is realized, and the space of the knotter bracket is fully utilized. , so that the spatial structure parameter matching of the knotter is more reasonable, and facilitates the processing of each shaft hole on the knotter bracket 2 .

When the present invention works, the rope is first sent to the rope notch 24 by the rope needle, and the rope-driven incomplete bevel gear 20 that controls the action of the rope gripper J on the small toothed disc 1 is connected with the The rope clamping driven bevel gear 19 at one end of the worm shaft 18 meshes, and the involute worm 25 affixed to the other end of the worm shaft 18 meshes with the helical gear 26 to drive the rope clamping disc 16 When rotating, the rope clamping moving piece 21 cooperates with the rope clamping disc 16 to clamp the rope and overlap the rope on the knotting mouth 13 at the same time. After the small sprocket 1 rotates through a phase, the knotting driving incomplete bevel gear 5 on the large sprocket 3 that controls the rotation of the knotting mouth 13 is connected to one end of the knotting mouth 13 The knotting driven bevel gear 9 is meshed to drive the knotting mouth 13 to rotate so that the binding rope is looped on the surface of the knotting mouth 13 . At the same time, the hook pincers 14 first open the pincers to bite the binding rope under the action of the cylindrical cam 12 and then close, and the binding rope is bitten between the hook pincers 14 and the knotting mouth 13 . After the large toothed disc 3 continues to rotate for one phase, the grooved cam 4 controls the knife arm 7 to swing, and the rope cutting blade 15 on the knife arm 7 cuts off the bundle rope below the clamper J , and by means of the knife arm notch 30 on the knife arm 7, the rope buckle on the knotting nozzle 13 is forcibly pushed off, and finally a knot is formed. When the large toothed disc 3 turns back to the initial position, the knife arm 7 reversely swings back to the initial position to complete a knotting process.

The described embodiment is a preferred implementation of the present invention, but the present invention is not limited to the above-mentioned implementation, without departing from the essence of the present invention, any obvious improvement, replacement or modification that those skilled in the art can make Modifications all belong to the protection scope of the present invention.

Claims (12)

1. a two gear disk drives knotter, it is characterised in that, comprise small tooth plate (1), knotter support (2), large fluted disc (3), the tool arm (7) being assemblied on knotter support (2), around Kou Qianyao mechanism R and wire holder driving mechanism Q;

The two ends of the knotter spindle hole of main (201) that described small tooth plate (1) and described large fluted disc (3) are coaxially fixed on described knotter support (2); The described both sides being arranged on described knotter support (2) around Kou Qianyao mechanism R and described wire holder driving mechanism Q respectively;

Described large fluted disc (3) is circumferentially provided with knotting and drives incomplete cone gear (5), the tool arm roller (6) on described tool arm (7) top coordinates with the grooved cam (4) of large fluted disc (3) inner side, ties a knot and drives incomplete cone gear (5) to engage from dynamic bevel gear (9) and described knotting; The folder rope that is circumferentially provided with of described small tooth plate (1) drives incomplete cone gear (20), and folder rope drives incomplete cone gear (20) to engage from dynamic bevel gear (19) with described folder rope.

2. two gear disk according to claim 1 drives knotter, it is characterized in that, described wire holder driving mechanism Q drives wire holder J, uniform 3 folders grooving mouth (24) in the outer rim of the folder cheese (16) of described wire holder J, being 2 from dynamic bevel gear (19) by the head number of the involute helicoid worm (25) of worm shaft (18) consolidation with described folder rope, the number of teeth of the spiral wheel (26) engaged with described involute helicoid worm (25) is 6.

3. two gear disk according to claim 1 drives knotter, it is characterized in that, described tool arm roller (6) is cylinder shape, the cam surface of described grooved cam (4) is space profiles curved surface, the described cylindrical surface of tool arm roller (6) and the space profiles curved surface on cam surface are linear contact lay, and tool arm roller (6) rolls along space profiles curved surface.

4. two gear disk according to claim 1,2 or 3 drives knotter, it is characterised in that, it is Archimedean screw line cam with cylindrical cam (12) profile on the described described knotter support (2) coordinated around Kou Qianyao mechanism R.

5. two gear disk according to claim 3 drives knotter, it is characterized in that, described space profiles curved surface process of establishing is as follows: vertical line is made to oscillation centre axle in the upper surface center crossing roller on twine knife arm, intersection point is as the center O1 of moving coordinate system, the vertical line done using roller to rotary middle spindle is as the X-axis of moving coordinate system, turning axle, as Y-axis, sets up system of coordinates according to the right-hand rule;Crossing O1 point and make vertical line to fluted disc rotary middle spindle, intersection point is as the center O setting up quiet system of coordinates, and X-axis is made in the direction being parallel to moving coordinate system X1, and Y-axis is made in the direction of parallel Y1, sets up quiet system of coordinates according to the right-hand rule; Simultaneously moving coordinate system is �� around the quiet system of coordinates angle that turns clockwise; Starting position, moving coordinate system also be equivalent to sit quietly mark tie up to Z axle negative direction translation m unit length, Y-axis negative direction translate n unit length obtain; If tool arm when starting position and the angle of moving coordinate system be �� 0, the angle turned over during swing is ��, and tool arm roller upper surface central point is P, and lower surface central point is Q, and simultaneously tool arm length is set to l, and the distance between PQ is set to f; Therefore, the coordinate of P, Q point in moving coordinate system is respectively P(lcos (��+�� 0) ,-lsin (��+�� 0), 0), Q ((l-f) cos (��+�� 0) ,-(l-f) sin (��+�� 0), 0);

Wherein, the coordinate point that x1, y1, z1 are respectively in moving coordinate system;

Bring P, Q into connect point coordinate and be

Tool arm pushes away journey and the backhaul stage turns over angle respectively at cam:

Push away journey and turn over-angle

Backhaul turns over angle

Wherein:

��₁Twine knife arm swings angle;

�� pushes away journey start-phase;

�� pushes away journey and terminates phase place;

�� backhaul terminates phase place.

6. two gear disk according to claim 3 or 5 drives knotter, it is characterised in that, the two ends of described tool arm roller (6) are circular arc shape chamfering.

7. two gear disk according to claim 1,2 or 3 drives knotter, it is characterised in that, one end of described involute helicoid worm (25) is provided with nut type boss B(2501).

8. two gear disk according to claim 1,2 or 3 drives knotter, it is characterised in that, described knotter support (2) also comprises worm shaft axis hole (203), knotting mouth axis hole (204) and presss from both sides cheese axis hole (205); Described knotting mouth axis hole (204) is arranged in non-orthogonal concurrent aces with described knotter spindle hole of main (201), described worm shaft axis hole (203) and described knotter spindle hole of main (201) are in the axle layout that intersects vertically, described tool arm axle axis hole (202) and described knotting mouth axis hole (204) space are arranged vertically mutually, described folder cheese axis hole (205) and knotter spindle hole of main (201) are arranged vertically mutually in space, implement knotter spindle hole of main (201) and press from both sides cheese axis hole (205) to be mutually arranged vertically in space.

9. two gear disk according to claim 7 drives knotter, it is characterized in that, described knotting mouth axis hole (204) axial line d and described knotter spindle hole of main (201) axial line a crossed axis angle are 98 ��, described knotting mouth axis hole (204) axial line d and described worm screw axis hole (203) axial line c spatial intersecting angle are 30 ��, and the angle between described folder cheese axis hole (205) axial line e and described worm screw axis hole (203) axial line c is 72 ��.

10. two gear disk according to claim 1,2 or 3 drives knotter, it is characterized in that, described tool arm (7) is hinged on described tool arm axle axis hole (202) by tool arm axle (8), sliding surface bearing (29) and the first thrust ball bearing (28) one are supported in tool arm axle (8) hole on knotter support (2) by described tool arm axle (8) by what symmetry was installed, and tool arm axle (8) two ends are bolted fixing.

11. two gear disks according to claim 1,2 or 3 drive knotter, it is characterized in that, between folder cheese axis hole (205) end face on described folder cheese (16) end face, described spiral wheel (26) end face and described knotter support, boss (209) is all set.

12. two gear disks according to claim 1,2 or 3 drive knotter, it is characterised in that, the 2nd thrust ball bearing (31) is installed between described spiral wheel (26) and described folder cheese axis hole (205) end face.