CN103144953B - Bar stock axial-radial high-speed flexible conveying device and conveying method - Google Patents

Abstract

The invention discloses a bar material axial-radial high-speed flexible transmission device and a transmission method. In order to solve the problem that the existing technology is difficult to meet the high-speed and flexible transfer of bars, the bars of the present invention are continuously dialed through double-convex dials, offset drums, tapered drums, transition drums, merging drums, and transfer drums. The series of actions of catching, turning and passing completes the axial-radial high-speed flexible transmission of the bar. The present invention has the technical advantages of optimized dynamic parameters, simple structure, and better soft transmission characteristics, and can be used in various occasions such as single-rail single-row output and multi-rail input single-row output, and is more suitable for high-efficiency and flexible realization in high-speed motion. The transfer and delivery place of vulnerable rods, such as continuous high-speed delivery of tobacco rods into the filter tipping process after being rolled and shaped.

Description

A bar material axial-radial high-speed flexible transmission device and transmission method

technical field

The invention relates to the field of processing equipment, in particular to a transmission device that converts a bar from a high-speed axial motion state to a high-speed radial motion and provides the bar with axial braking and radial acceleration that meet the requirements of flexible transmission. Specifically, it is used to efficiently and flexibly realize the handover and transmission of fragile rods during high-speed motion, such as continuous high-speed transmission of tobacco rods into the filter tipping process after rolling and forming.

Background technique

The processing of bar products generally has two types of axial and radial processing techniques, so the production machine is usually composed of an upstream machine that can transmit the bar axially and a downstream machine that can transmit the bar radially, and the two are "L". shape arrangement. The bar conveying device is a transition mechanism connecting the upstream and downstream machines. Its function is to convert the bar from the high-speed axial movement state to the high-speed radial movement state. The key technology is to provide the bar axial braking and radial braking that meet the process requirements. Accelerates performance for soft delivery. Especially for bar products wrapped by similar granular materials, it is very easy to cause damage such as end particles falling off or breaking due to sharp speed changes and handover collisions. For example, in high-speed cigarette rolling from the rolling process to the tipping High-speed and soft conveying devices and technologies are required for process conversion.

The basic condition for realizing high-speed and soft transfer is to ensure that the gripper of the transfer device is synchronized with the axial movement of the bar, the receiver of the transfer device is synchronized with the radial movement of the bar, and the bar will not be damaged due to dynamic factors. Existing typical technologies include double cam dial-catching drum mechanism and spider hand-receiving drum mechanism. The double cam wheel-catching drum mechanism is the transmission device first used in the PASSIM series coiler of MOLINS company in the United Kingdom. In this type of mechanism, the bar is fed into the rotating catching wheel with the axial and radial speed obtained by the double-convex dial, and the negative pressure hole in the groove provides braking adsorption force to gradually stop the bar. Axial movement and transmission to the receiving drum. When the cam of the double-convex dial-catching drum mechanism transfers the bar material to the material receiving groove of the material catching wheel, it is inevitable that "throwing material" will occur, which reduces its working reliability and is difficult to be used for the transmission of multi-track bar material. On the other hand, this type of mechanism uses the adsorption force provided by the negative pressure hole in the material receiving tank to realize the axial braking of the bar. If the braking distance is short, the deceleration will be too fast, causing the material particles in the bar to rush forward and appear " "Short head" and other quality problems, the long braking distance will directly lead to the oversize of the mechanism, and there are problems such as the difficulty of accurately controlling the braking stop position of the bar, and the braking friction between the material receiving groove and the bar often leads to product failure. Cosmetic damage. The spider hand is a transmission device based on the planetary gear train technology that was first used by the German Hauni (HAUNI) PROTOS series coiler. The suction claw of the spider hand always moves along the elliptical trajectory. The tangential velocity at the position of the short semi-axis of the trajectory is the same as the axial velocity of the bar, and the tangential velocity at the position of the long semi-axis is the same as that of the receiving drum. The tangential speed of the groove is consistent, so as to realize the axial-radial transmission of the bar. In order to meet the requirements of high-speed transmission, the spider hand mechanism generally needs to have multiple suction claws, which is a complex multi-planetary compound mechanism, which is difficult to design and high in manufacturing costs. Poor adaptability. On the other hand, since the spider hand mechanism must complete the conversion of the bar from high-speed axial movement to high-speed radial movement within the time of the suction claw rotating a quarter of the elliptical arc, the bar must bear a sharp acceleration load, which is likely to cause product failure. Quality issues such as shorts and breaks occur.

Contents of the invention

In view of the fact that the existing technology is difficult to meet the high-speed flexible transfer problem proposed by the processing of bar products, especially those wrapped by similar granular materials, it is very easy to cause the end particles to fall off or break due to sharp speed changes and transfer collisions. For example, in high-speed cigarette rolling, high-speed transmission devices are needed when converting from rolling process to tipping process. The existing technology often leads to quality problems such as obvious short ends and appearance damage. The invention discloses a novel axial-radial high-speed flexible transmission device and a PCFT (Poke-Catch-Flex-Transmit) transmission method for rods. The new method completes the Poke and Catch of the rod in sequence The series of transmission steps of , Flex, and Transmit enable the bar material to bear the action of lower-intensity dynamic parameters while completing the high-speed transmission action, so that the PCFT device designed according to the PCFT method has outstanding flexible transmission performance and simple structure , low cost, suitable for single-rail single-row output and multi-rail input single-row output, and more suitable for high-speed and soft transmission of fragile bars.

In order to achieve the above purpose, the technical solution adopted by the present invention is: a bar material axial-radial high-speed flexible transmission device, including an upstream machine capable of axially transporting bar material and a downstream machine capable of radially transmitting bar material. The structural feature is that the upstream machine and the downstream machine are arranged in an "L" shape, and at least one set of conversion mechanisms for converting the bar from axial movement to radial movement is arranged between the upstream machine and the downstream machine; The group conversion mechanism includes a double-convex dial, an offset drum placed on one side of the double-convex dial, a tapered drum that rotates opposite to the offset drum, and a transition drum that rotates opposite to the tapered drum; When the mechanism is one group, the transition drum directly rotates opposite to a transmission drum; when there are multiple sets of conversion mechanisms, multiple transition drums rotate opposite to a merging drum, and the merging drum and the transfer drum Rotate in opposite directions.

Further, the double-convex dial is composed of a pair of cylindrical cams arranged forward and backward; the rotation axis of the offset drum forms an angle θ with the direction of the axial movement of the bar, and the offset drum is provided with at least A suction claw, the tapered drum is provided with at least one suction groove that cooperates with the suction claw on the offset drum to transfer the bar; the transition drum is provided with at least one suction groove that cooperates with the upper suction groove of the tapered drum Suction groove for conveying bar material; when the conversion mechanism is a group, the transmission drum is provided with at least one suction groove that cooperates with the suction groove on the transition drum to convey the bar material; when the conversion mechanism is multiple groups, the The merging drum is provided with a plurality of suction claws that cooperate with the suction grooves on the transition drum to transfer the bar. The suction claws are set on a rocker and can slide along the axial direction of the rocker. The merging drum has Cylindrical cam or end cam with groove, the suction claw of the combined drum is embedded in the groove of the cylindrical cam or end cam and can move along the groove; the conveying drum is provided with at least one and The suction claws on the merging drum match the suction grooves of the transfer bar; The suction grooves communicate with the negative pressure adsorption device respectively.

The negative pressure adsorption device of the present invention is existing equipment, and its main function is to use air pressure to realize the actions of the suction claw or the suction groove to grab and put the bar.

As a specific way of position adjustment, the suction claws of the offset drum are installed on a rotatable position adjustment device. When the offset drum rotates, the position adjustment device rotates the suction claws and the bar to the The axis is parallel to the axis of rotation of the offset drum.

Furthermore, the present invention also provides a method for flexible bar material transmission using the above-mentioned bar material axial-radial high-speed flexible transmission device, which is characterized in that it includes the following steps:

1) Dial: The double-convex dial is composed of a pair of high-speed rotating cylindrical cams arranged in front and back. The adsorption force generated by the negative pressure adsorption device is used to accept the bar moving along the conveying rail, and the alignment is completed through the cam groove of the rotating cylindrical cam. The dialing action of the bar makes the bar obtain the radial speed required by the offset drum to accept the bar while maintaining the axial movement speed when it is located in the upstream machine;

2) Catching: the rotation axis of the offset drum is offset by an angle with the direction of the axial movement of the bar, and when rotating, the _K1 suction claws on the offset drum have the same force as the moving bar when they are handed over to the bar. The same axial movement and radial movement of the material, when the relative speed of the offset drum and the bar material is zero, the adsorption force generated by the negative pressure adsorption device is used to complete the action of catching the bar material, and the bar material is in the double convex dial. A gentle transition between the wheel (2) and the offset drum;

3) Rotation: the suction claw of the offset drum is installed on a rotatable position adjustment device. When the offset drum rotates, the position adjustment device makes the axis of the suction claw of the offset drum and the bar rotate to the same The axis of rotation of the offset drum is parallel to complete the action of turning the bar;

4) Pass: The conical drum with K ₂ suction slots and the offset drum rotate in opposite directions so that the suction slots and the suction claws of the offset drum move to the tangent at the same instantaneous speed, and the suction is absorbed by negative pressure. The opening and closing of the adsorption force generated by the device completes the transfer action of the bar between the offset drum and the tapered drum;

The transition drum with K ₃ suction grooves and the conical drum rotate in opposite directions so that the instantaneous speed of the transition drum suction groove and the conical drum suction groove moving to the tangent point is equal, and the adsorption force generated by the negative pressure adsorption device The opening and closing of the bar completes the handover action of the bar between the conical drum and the transition drum, and the bar is conveyed and output by a radial single row;

For the case of a group of high-speed axially moving bars on a single track, the transfer drum with K ₅ suction grooves and the transition drum rotate in opposite directions so that the suction grooves of the transfer drum and the transition drum move to a tangent position The instantaneous speed is equal, the opening and closing of the adsorption force generated by the negative pressure adsorption device completes the handover action of the bar between the transition drum and the transfer drum, and the bar is conveyed and output to the diameter of the transfer drum by radial single row On the moving track, complete the single-track radial single-row transmission and output of a group of high-speed axially moving bars;

For the case of multi-track multi-group high-speed axially moving bars, the combined drum with K ₄ suction claws rotates oppositely with multiple transition drums, and the suction claws on the combined drum that can move in the axial direction are connected to the two transition drums respectively. The suction groove on the drum rotates to the same instantaneous speed at the tangent point, and the opening and closing of the adsorption force generated by the negative pressure adsorption device completes the transfer of the bar and the bar between the two transition drums and the merging drum. Action; the suction claws on the merging drum rotate with the merging drum and at the same time move towards each other under the action of the cylindrical cam or the end face cam and the rocker to the tangent position between the merging drum and the conveying drum, then the bar can be Transfer to the radial movement track of the transfer drum with K ₅ suction slots to complete the radial single-row transfer and output of multi-track multi-group high-speed axially moving bars;

The K ₁ , K ₂ , K ₃ , K ₄ and K ₅ are all positive integers.

The soft transfer of the bar between the double-convex dial and the offset drum in the present invention means that there is no rigid collision of the bar during the transfer between the double-convex dial and the offset drum.

Further, when the bar is dialed into the cam groove of the double-convex dial, the radial movement law of the bar is:

Among them, V is the axial velocity of the bar before it enters the double-convex dial, s is the radial displacement of the bar, v _x the radial velocity of the bar, a is the acceleration of the bar, ω _c is the rotational speed of the cylindrical cam, and Φ _s is the cylindrical cam The near repose angle, Φ _l is the thrust angle of the cylindrical cam, h is the stroke of the cylindrical cam, is the phase difference of the cylindrical cam, r _c is the radius of the cylindrical cam.

In the above step 2), the radial motion law of the bar is:

$\left\{\begin{array}{c}\mathrm{<span\; class="notranslate">\; V</span>}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; 2</span>}\mathrm{<span\; class="notranslate">\; \&pi;</span>}}{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}<span\; class="notranslate">\; \&Center\; Dot;</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&theta;</span>}\\ \frac{\mathrm{<span\; class="notranslate">\; h</span>}{\mathrm{<span\; class="notranslate">\; \&omega;</span>}}_{\mathrm{<span\; class="notranslate">\; c</span>}}}{{\mathrm{<span\; class="notranslate">\; \&Phi;</span>}}_{\mathrm{<span\; class="notranslate">\; l</span>}}}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; 2</span>}\mathrm{<span\; class="notranslate">\; \&pi;</span>}}{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}<span\; class="notranslate">\; \&Center\; Dot;</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}\mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; \&theta;</span>}\end{array}\right.<span\; class="notranslate">\; .</span>$

Among them, V is the axial velocity of the bar before entering the double-convex dial, ω _c is the rotational speed of the cylindrical cam, Φ _l is the thrust angle of the cylindrical cam, h is the stroke of the cylindrical cam, and K ₁ is the suction claw of the offset drum The number, r ₁ is the radius of the offset drum, θ is the offset angle of the offset drum.

Further, the relationship between the tapered drum and the offset drum is:

$\left\{\begin{array}{c}\frac{{\mathrm{<span\; class="notranslate">\; d</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; D.</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; 4</span>}{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; \&Center\; Dot;</span><span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}\\ {<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; D.</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; d</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{{\mathrm{<span\; class="notranslate">\; h</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; L</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}\end{array}\right.<span\; class="notranslate">\; .</span>$

Among them, d ₂ , D ₂ , H ₂ , and K ₂ are the upper bottom diameter, lower bottom diameter, height, and number of suction slots of the conical drum, respectively; L is the length of the bar; K ₁ , r ₁ , and θ are respectively The number, radius and offset angle of the suction claws of the offset drum.

Further, the relationship between the transition drum and the offset drum is:

$\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 3</span>}}}{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 3</span>}}}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}<span\; class="notranslate">\; .</span>$

Where r ₃ and K ₃ are the radius of the transition drum and the number of suction claws respectively, and K ₁ and r ₁ are the number and radius of the suction claws of the offset drum respectively.

Further, in the above step 4), the relationship between the merging drum, the transfer drum and the offset drum is:

$\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 5</span>}}}{{\mathrm{<span\; class="notranslate">\; k</span>}}_{\mathrm{<span\; class="notranslate">\; 5</span>}}}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 4</span>}}}{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 4</span>}}}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}<span\; class="notranslate">\; .</span>$

Among them, r ₅ and K ₅ are the radius of the merged drum and the number of suction claws respectively, r ₄ and K ₄ are the radius of the transmission drum and the number of suction claws respectively, K ₁ and r ₁ are the suction of the offset drum respectively Number of claws, radius.

The present invention is further described below.

In the present invention, a group of single-track PCFT devices completes single-track single-row transmission and output, or is combined to form multi-track multi-group PCFT devices to realize multi-track input and single-row transmission and output. Whether it is a single-track or multi-track use form, each track includes a PCFT main mechanism composed of double-convex dials, offset drums, conical drums, and transition drums to complete the soft delivery of bars, and multi-track multi-group PCFT devices It also includes auxiliary mechanisms such as merging drums and transfer drums to complete the function of multi-track input and single-row transfer and output.

The PCFT high-speed flexible transmission method and device are used for the conversion and transmission of workpieces between the upstream machine for axially transmitting bar material and the downstream machine for radially transmitting bar material arranged in an "L" shape, and the Poke of bar material is completed in sequence , Catch, Flex, and Transmit series of transmission steps make the bar material change from the high-speed axial movement state to the high-speed radial movement state, and provide axial braking and radial movement of the bar material that meet the requirements of flexible transmission. to accelerate performance.

The PCFT high-speed transmission method and device include the principle and method of continuously completing the series of transmission steps of Poke, Catch, Flex, and Transmit, as well as a special mechanism for completing these transmission movements at high speed. Detailed description will be given below.

The Poke process of the PCFT high-speed transmission method and device is to enable the bar to obtain the required radial speed while maintaining the original axial movement speed to complete the subsequent action of catching the bar. The principle is On the premise of not affecting the original axial movement of the bar, the bar is given an action of advancing radially through a special mechanism. According to the present invention, a double-convex dial mechanism is provided, which is formed by a pair of high-speed rotating cams whose working surface is an arc-shaped groove on the cylindrical surface. Under the joint action of two arc-shaped working grooves, it is smoothly moved. The double-cam mechanism makes the axially moving bar material obtain radial speed and then be sent out, so there is no return movement. Considering the high-speed movement and soft transmission requirements of the bar, the radial movement of the bar can be controlled by the following formula:

Among them, V is the original axial velocity of the bar, ω _c is the rotational speed of the cylindrical cam, Φ _s is the near repose angle, Φ _l is the thrust angle, h is the stroke, is the phase difference, r _c is the radius.

The PCFT high-speed transmission method and device catch (Catch) process completes the offset drum mechanism to gently receive the bar material from the double-convex dial mechanism, and prepares for the subsequent bar material rotation (Flex) action, the method is in the offset drum At the moment when the relative speed between the wheel suction claw and the bar is zero, the negative pressure adsorption force is used to complete the action of catching the bar. In the offset drum mechanism provided by the present invention, its rotating shaft is offset by an angle from the axial direction of the bar, and several suction claws with negative pressure holes are evenly installed on it, and the material is grasped through the opening and closing of the negative pressure airflow , Unloading action. The suction claw is installed on the rotating support, which can be used for intermittent swing to adjust the position and posture of the bar. The process of catching (Catch) is: the fragile bar moving in the high-speed axial direction first moves forward and radially under the action of the double cam, and then is picked up by the suction claw of the offset drum. The relative speed is zero, which ensures the softness of handover. The bar makes a compound motion under the action of the rotation of the offset drum and the swing of the suction claw, and the relationship between its kinematic parameters is as follows

$\left\{\begin{array}{c}\mathrm{<span\; class="notranslate">\; V</span>}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; 2</span>}\mathrm{<span\; class="notranslate">\; \&pi;</span>}}{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}<span\; class="notranslate">\; \&CenterDot;</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}\mathrm{<span\; class="notranslate">\; sin</span>}\mathrm{<span\; class="notranslate">\; \&theta;</span>}\\ \frac{\mathrm{<span\; class="notranslate">\; h</span>}{\mathrm{<span\; class="notranslate">\; \&omega;</span>}}_{\mathrm{<span\; class="notranslate">\; c</span>}}}{{\mathrm{<span\; class="notranslate">\; \&Phi;</span>}}_{\mathrm{<span\; class="notranslate">\; l</span>}}}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; 2</span>}\mathrm{<span\; class="notranslate">\; \&pi;</span>}}{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}<span\; class="notranslate">\; \&CenterDot;</span>{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}\mathrm{<span\; class="notranslate">\; cos</span>}\mathrm{<span\; class="notranslate">\; \&theta;</span>}\end{array}\right.<span\; class="notranslate">\; .</span>$

Where K ₁ , r ₁ , and θ are the number, radius, and offset angle of the suction claws of the offset drum, respectively.

The flex action of the PCFT high-speed transmission method and device occurs during the rotation of the bar with the offset drum and the transfer with the tapered drum. The purpose is to adjust the spatial position of the bar and create a soft transition for the next step. condition. The suction claw of the offset drum mechanism provided by the present invention is installed on a rotatable position adjustment device, and the rotation is controlled by negative pressure. When it is transferred to the catch station or the feed station, it is blocked by a marble to ensure its stability. . The process of flexing is: after the suction claw catches the bar material, the positioning device makes the suction claw rotate from the material catching station to the feeding station, thereby driving the bar material to rotate to be parallel to the rotation axis of the offset drum , and sent to the conical drum to complete the action of turning (Flex) on the bar. After the bar is conveyed from the offset drum, the positioning device makes the suction claw rotate from the feeding station to the catch station, ready for the next catch.

For a set of single-track PCFT high-speed transmission methods and devices, the process of transmission includes the handover action of transmission between the offset drum and the conical drum, and between the conical drum and the transition drum. The principle is as follows: : The front drum and the rear drum rotate in opposite directions, when the suction claws (or suction grooves) of the previous drum and the suction claws (or suction grooves) of the rear drum move to the handover position, the tangent between the two The instantaneous speed is equal, through the opening and closing of the negative pressure adsorption force, the suction claw of the previous drum releases the bar, and the suction claw of the next drum catches the bar, and the bar is completed between the drums. The transmission (Transmit) handover action, and finally transmit the output in the form of a radial single row, the technical parameters of the conical drum can be obtained by the following formula

$\left\{\begin{array}{c}\frac{{\mathrm{<span\; class="notranslate">\; d</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; D.</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; 4</span>}{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; \&Center\; Dot;</span><span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}\\ {<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; D.</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; -</span>{\mathrm{<span\; class="notranslate">\; d</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{{\mathrm{<span\; class="notranslate">\; h</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; L</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}\end{array}\right.<span\; class="notranslate">\; .</span>$

Among them, d ₂ , D ₂ , H ₂ , and K ₂ are respectively the upper bottom diameter, lower bottom diameter, height, and number of suction slots of the conical drum, and L is the length of the bar. The transition drum provided by the invention plays a transition role, and its technical parameters are calculated by the following formula

$\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 3</span>}}}{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 3</span>}}}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}<span\; class="notranslate">\; .</span>$

Where r ₃ and K ₃ are the radius of the transition drum and the number of suction claws respectively.

For the multi-track multi-group PCFT high-speed transmission method and device, the Transmit process is completed by a pair of transition drums and a merging drum. The process is that a pair of transition drums and a merged drum rotate in opposite directions, the suction groove on the transition drum moves to the handover position with the suction claw on the merged drum, the instantaneous speed at the tangent of the two is equal, and the negative pressure The opening and closing of the air flow makes the transition wheel suction groove release the bar material, and the merging drum suction groove catches the bar material, and completes the transfer action of the bar material between the transition drum and the merging drum. After the adjacent suction claws on the combined drum receive a bar one by one, the two suction claws installed on the sliding seat rotate with the drum and at the same time, under the action of the cylindrical cam (or end face cam) and the rocker Move toward each other to align with each other. At this time, the suction groove of the transfer drum that rotates opposite to the merging drum then absorbs the bars from the merging drum in turn, and transfers the bars to the radial conveying track, and finally completes the multi-track multi-group high-speed axial movement of the bars The radial single-row transmission output. The technical parameters of combined drum and transfer drum meet the following relationship

$\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 5</span>}}}{{\mathrm{<span\; class="notranslate">\; k</span>}}_{\mathrm{<span\; class="notranslate">\; 5</span>}}}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 4</span>}}}{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 4</span>}}}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}}<span\; class="notranslate">\; .</span>$

Among them, r ₅ and K ₅ are the radius of the combined drum and the number of suction claws respectively, and r ₄ and K ₄ are the radius of the transfer drum and the number of suction claws respectively.

Compared with the prior art, the beneficial effect of the present invention is that: the PCFT (Poke-Catch-Flex-Transmit) method and device for the axial-radial high-speed flexible transmission of the bar material is designed to sequentially complete the dialing of the bar material ( New principles and methods of Poke, Catch, Flex, and Transmit series transmission steps and special mechanisms that can complete these transmission actions at high speed, with optimized dynamic parameters, simple structure, and better softness Transmission characteristics, suitable for single-rail single-row output and multi-rail input single-row output and other technical advantages, more suitable for high-efficiency and flexible transfer and transfer of vulnerable bars in high-speed motion, such as tobacco rod rolling After forming, it is continuously conveyed at high speed into the filter tipping process, etc.

Description of drawings

Fig. 1 is the overall layout schematic diagram of an embodiment of the present invention (two groups of double tracks);

Fig. 2 is a partial schematic diagram of A direction in Fig. 1;

Fig. 3 is a partial schematic view of direction B of Fig. 1;

Fig. 4 is the schematic diagram of double-convex dial wheel of the present invention; Wherein figure (a) is the schematic diagram before the rod material; Figure (a) is the schematic diagram when the rod material is driven;

Fig. 5 is the schematic diagram of catching, turning and passing bar material by the offset drum of the present invention;

Fig. 6 is a schematic structural view of the offset drum shown in Fig. 5 .

Detailed ways

In order to describe the bar more clearly, in this embodiment, the bar is located at different positions and given different labels. During the axial transmission process before entering the conveying device, the label of the bar is 1, and the bar entering the conveying device The numbers are 13,14.

A bar material axial-radial high-speed flexible transmission device, as shown in Figures 1 to 6, is composed of two monorails and a set of PCFT devices. The layout of the two is determined according to the size parameters and motion parameters of the bar material 1. , Each track includes a double-convex dial 2, an offset drum 4, a tapered drum 7, a transition drum 9, a merge drum 11, and a transfer drum 12.

As shown in Figure 4, 2 is composed of high-speed rotating cam 21 and cam 25, and there is a phase difference between the two, so as to ensure that the bar 1 is in the groove 22 of the cylindrical cam 21 and the groove 24 of the cylindrical cam 25 at the same time. Enter push. There is a negative pressure suction hole 23 on the groove 22 of the cam 21, which is used to absorb the bar 1 and drive it to accelerate translation.

5 and 6 show the offset drum 4 . _K1 suction claws 3 are installed on the offset drum 4, and each suction claw also includes a positioning device 5, so that the suction claws can be switched between the catch station and the feed station, and the suction claws can be switched by marbles 27 and 28 or other The positioning method blocks the suction claw to keep the suction claw stable. The catching station is parallel to the axial movement direction of the bar 1, and the feeding station is parallel to the rotation axis of the offset drum. There is a negative pressure hole 26 on the suction claw, and the action of catching and discharging material is realized through the opening and closing of the negative pressure adsorption force. During installation, the rotation axis of the offset drum 4 is offset by an angle θ with the axial movement direction of the bar 1 . When working at the material catching position, the suction claw is adjusted to the material catching station, and the negative pressure hole 26 is opened to generate negative pressure adsorption force, and the bar material 1 is caught from the double-convex dial 2 . When the offset drum 4 rotates, the positioning device 5 rotates the axis of the suction claw 3 and the bar to the feeding station, closes the negative pressure adsorption airflow of the negative pressure hole 26 at the feeding position, and loosens the bars 13,14.

The conical drum 7 shown in Fig. 1 has K ₂ suction grooves 6, and the suction grooves realize the action of catching and discharging materials through the opening and closing of negative pressure adsorption airflow. The mounting position of the tapered drum 7 ensures that it is tangent to the offset drum 4 at the handover position. When working, the rotation direction of the conical drum 7 is opposite to the rotation direction of the offset drum 4, the suction groove 6 and the suction claw 3 are transferred to the transfer position synchronously, and the suction claw 3 stops the negative pressure adsorption airflow to release the bar 13, 14. The suction groove 6 opens the negative pressure adsorption airflow to catch the bars 13, 14, and completes the transfer of the bars 13, 14. When the suction groove 6 is forwarded to the feeding position, the negative pressure adsorption air flow is closed, and the bar stock 13,14 is loosened.

The transition drum 9 in Fig. 1 has _K3 suction grooves 8, and the suction grooves realize the action of catching and discharging materials through the opening and closing of negative pressure adsorption force. The installation position of the transition drum 9 ensures that it is tangent to the conical drum 7 at the handover position. When working, the rotation direction of the offset drum 4 is opposite to the rotation direction of the tapered drum 7. When the suction groove 8 and the suction groove 6 are transferred to the handover position synchronously, the suction groove 8 closes the negative pressure adsorption airflow to loosen the bar 13 , 14, the suction groove 6 opens the negative pressure adsorption airflow to catch the bars 13,14, and completes the transfer action of the bars 13,14. When the suction groove 6 is forwarded to the feeding position, the negative pressure adsorption air flow is closed, and the bar stock 13,14 is loosened. For a group of single-track PCFT devices, the transition drum 9 can directly complete the radial single-row transmission and output of the bars 13,14.

As shown in Figures 1 and 2, the merging drum 11 is composed of a rocker 19, K ₄ suction claws 15, K ₄ suction claws 16, a cylindrical cam or an end cam 18. Suction claws 15 and 16 realize the actions of catching and discharging materials through the opening and closing of negative pressure adsorption force. Cylindrical cam or end face cam 18 is fixed, and rocking bar 19 is rotatable, and suction claw 15 and suction claw 16 are enclosed within on the rocking bar and can slide. The suction claws 15 and 16 are respectively embedded in a pair of grooves of the cylindrical cam or the end face cam 18 and can move therein. Suction pawl 15, suction pawl 16 do the movement that draws close to the middle and separates to both sides regularly under the joint action of rocking bar 19 and cylinder cam or end face cam 18. The transfer drum 12 has K+ ₅ suction grooves 20, and the action of catching and discharging materials is realized through the opening and closing of the negative pressure adsorption force. During work, the merging drum 11 and the transition drums 17, 9 rotate oppositely. The suction claws 15 and 16 catch the rods 13 and 14 from the suction grooves of the transition drums 17 and 9 respectively at the handover position. Along with the rotation of merging drum 11, suction claw 15, suction claw 16 draw near to the middle under the effect of rocking bar 19 and cylindrical cam or end face cam 18. The suction claw 15 first moves to the feeding position, is in the middle position of the merging drum 11, loosens the bars 13, 14, and transfers them to the suction groove 20 of the delivery drum 12. The suction jaw 16 then moves to the feeding position, which is also in the middle of the merging drum 11, loosens the bars 13, 14, and transfers them to a suction groove 20 behind the transfer drum 12, so that the double-track bars 13, 14 Aligned in a row, the radial single-row transmission output of two sets of high-speed axially moving bars 13 and 14 of the double-track is completed.

The implementation manner of the multi-track multi-group PCFT transmission device is similar to the above, and will not be repeated here.

The above-mentioned embodiments should be understood that these embodiments are only used to illustrate the present invention more clearly, and are not intended to limit the scope of the present invention. After reading the present invention, those skilled in the art will understand the various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

Claims (9)

1. a bar axis-radial high-speed flexible conveyer, comprise the upstream machine that axially can transmit bar (1) and can the downstream machine of radial transfer bar (1), it is characterized in that, described upstream machine and the L-shaped layout of downstream machine, be provided with bar (1) is converted to radial motion by least one group switching mechanism by axial motion between described upstream machine and downstream machine; Often organize switching mechanism and comprise biconvex thumb wheel (2), be placed in the biased drum (4) of biconvex thumb wheel (2) side, the tapered drum (7) rotated in opposite directions with biased drum (4), the transition drum (9) rotated in opposite directions with tapered drum (7);

When switching mechanism is one group, described transition drum (9) is directly transmitted drum (12) with one and is rotated in opposite directions;

When switching mechanism for organizing more, multiple transition drum (9,17) and merges drum (11) and rotates in opposite directions, and this merging drum (11) and this transmission drum (12) rotate in opposite directions.

2. bar axis-radial high-speed flexible conveyer according to claim 1, is characterized in that, described biconvex thumb wheel (2) is made up of the cylindrical cam arranged before and after a pair; The rotation axis of described biased drum (4) and the direction of bar (1) axial motion are an angle θ, this biased drum (4) is provided with at least one and inhales pawl (3), described tapered drum (7) is provided with at least one and biased drum (4) is inhaled pawl (3) and coordinate the bothrium (6) transmitting bar (1); Described transition drum (9) is provided with at least one and coordinates with the upper bothrium (6) of tapered drum (7) bothrium (8) transmitting bar (1);

When switching mechanism is one group, described transmission drum (12) is provided with at least one and coordinates with the upper bothrium (8) of transition drum (9) bothrium (20) transmitting bar (1);

When switching mechanism for organizing more, described merging drum (11) is provided with multiple with transition drum (9, 17) upper bothrium (8) coordinates the suction pawl (15 transmitting bar (1), 16), described suction pawl (15, 16) be sleeved on a rocking bar (19) above also to slide along the axis of rocking bar (19), described merging drum (11) has cylindrical cam or the edge type strainer (18) of band groove, the suction pawl (15 of described merging drum (11), 16) can move along groove in the groove being embedded in described cylindrical cam or edge type strainer (18), described transmission drum (12) is provided with at least one with merging and drum (11) inhale pawl (15,16) coordinates the bothrium (20) transmitting bar (1),

The bothrium (8) of the suction pawl (3) of described biased drum (4), the bothrium (6) of tapered drum (7), transition drum (9), the suction pawl (15,16) of merging drum (11) are communicated with negative pressure adsorption equipment respectively with the bothrium (20) transmitting drum (12).

3. bar axis-radial high-speed flexible conveyer according to claim 1 and 2, it is characterized in that, the suction pawl (3) of described biased drum (4) is arranged on rotating rackwork (5), and when described biased drum (4) is rotated, this rackwork (5) makes suction pawl (3) and bar (1) turn to the axis of bar (1) and the rotation axis parallel of described biased drum (4).

4. utilize one of claim 1 ~ 3 described bar axis-radial high-speed flexible conveyer to carry out a method for bar flexibility transmission, it is characterized in that, comprise the steps:

1) dial: described biconvex thumb wheel (2) is formed by arranging before and after the cylindrical cam of a pair high speed rotating, the adsorption affinity utilizing negative pressure adsorption equipment to produce accepts the bar moved along conveyor track, complete the action of dialling to bar by the cam path of the cylindrical cam rotated, while making the axial motion speed of bar when remaining in upstream machine, the biased drum (4) of acquisition accepts the radial velocity needed for bar;

2) catch: the biased angle of the rotation axis of described biased drum (4) and the direction of bar (1) axial motion, makes the K on biased drum (4) during rotation ₁individual suction pawl (3) has the axial motion identical with motion bar and radial motion when joining with bar, the adsorption affinity utilizing negative pressure adsorption equipment to produce in the moment that biased drum (4) and bar relative velocity are zero completes the action of catching to bar, completes the soft handing-over of bar between biconvex thumb wheel (2) and biased drum (4);

3) turn: the suction pawl (3) of described biased drum (4) is arranged on rotating rackwork (5), while biased drum (4) rotates, rackwork (5) makes the suction pawl (3) of biased drum (4) and the axis of bar turn to the rotation axis parallel with biased drum (4), completes the action turned to bar;

4) pass: there is K ₂the tapered drum (7) of individual bothrium (6) makes bothrium (6) equal with the momentary velocity that the suction pawl (3) of this biased drum (4) moves to tangent place with described biased drum (4) opposite direction rotating, and the keying of the adsorption affinity produced by negative pressure adsorption equipment completes the transfer operation of the biography of bar between biased drum (4) and tapered drum (7);

There is K ₃transition drum (9) and tapered drum (7) opposite direction rotating of individual bothrium make the bothrium of transition drum (9) (8) equal with the momentary velocity that tapered drum (7) bothrium (6) moves to tangent place, the keying of the adsorption affinity produced by negative pressure adsorption equipment completes the transfer operation of the biography of bar between tapered drum (7) and transition drum (9), and bar is exported by the single transmission of radial direction;

For single track one group of high speed shaft to the situation of motion bar, there is K ₅the transmission drum (12) of individual bothrium (20) makes the bothrium of transmission drum (12) (20) equal with the momentary velocity that the bothrium (8) of transition drum (9) moves to tangent place with described transition drum (9) opposite direction rotating, the keying of the adsorption affinity produced by negative pressure adsorption equipment completes bar in transition drum (9) and the transfer operation transmitting the biography between drum (12), bar is exported on the track of transmission drum (12) radial motion by the single transmission of radial direction, complete the radial direction single action that transmit the biography that export of single track one group of high speed shaft to motion bar,

For many rail many groups high speed shafts to the situation of motion bar, there is K ₄merging drum (11) and multiple transition drum (17,9) of individual suction pawl rotate in opposite directions, merge the suction pawl (15,16) that drum (11) can move vertically equal with the momentary velocity that the bothrium (8) on two transition drums (17,9) turns to tangent place respectively, the keying of the adsorption affinity produced by negative pressure adsorption equipment completes the transfer operation of bar (13) and the biography of bar (14) between two transition drums (17,9) and merging drum (11); Suction pawl (15 on described merging drum (11), 16) to merging drum (11) and transmission drum (12) tangency location place with merging while drum (11) rotates move toward one another under the effect of cylindrical cam or edge type strainer (18) and rocking bar (19), bar (1) can be sent to and there is K ₅on the track of the radial motion of the transmission drum (12) of individual bothrium, complete the radial direction single action that transmit the biography that export of many rail many groups high speed shafts to motion bar;

Described K ₁, K ₂, K ₃, K ₄, K ₅be positive integer.

5. the method for bar flexibility according to claim 4 transmission, it is characterized in that, when described bar is dialled in the cam path of biconvex thumb wheel (2), the radial motion rule of bar is:

Wherein V is that bar enters the front axial velocity of biconvex thumb wheel (2), and s is bar radial displacement, v _xbar radial velocity, a is bar acceleration/accel, ω _cfor cylindrical cam rotating speed, Φ _sfor near angle of repose, the Φ of cylindrical cam _lfor the rise angle of cylindrical cam, h is the stroke of cylindrical cam, for the phase difference of cylindrical cam, r _cfor the radius of cylindrical cam.

6. the method for bar flexibility according to claim 4 transmission, is characterized in that, step 2) in, the radial motion rule of bar is:

$\left\{\begin{array}{c}V=\frac{2\mathrm{\&pi;}}{K_1}\&CenterDot;r_1\sin \mathrm{\&theta;}\\ \frac{h{\mathrm{\&omega;}}_c}{{\mathrm{\&Phi;}}_l}=\frac{2\mathrm{\&pi;}}{K_1}\&CenterDot;r_1\cos \mathrm{\&theta;}\end{array}\right.;$

Wherein V is that bar enters the front axial velocity of biconvex thumb wheel (2), ω _cfor cylindrical cam rotating speed, Φ _lfor the rise angle of cylindrical cam, h is the stroke of cylindrical cam, K ₁for the suction pawl number of biased drum (4), r ₁for the radius of biased drum (4), θ is the angle of eccentricity of biased drum (4).

7. the method for bar flexibility according to claim 4 transmission, is characterized in that, step 4) in, described tapered drum (7) with the pass of biased drum (4) is:

$\left\{\begin{array}{c}\frac{d_2+D_2}{4K_2}\&CenterDot;=\frac{r_1}{K_1}\\ {\left(\frac{D_2-d_2}{2}\right)}^2+{H_2}^2=L^2\end{array}\right.;$

Wherein, d ₂, D ₂, H ₂, K ₂be respectively the upper base diameter of tapered drum (7), diameter of going to the bottom, highly, bothrium number, L is bar length, K ₁, r ₁, θ is respectively biased drum and inhales pawl number, radius, angle of eccentricity.

8. the method for bar flexibility according to claim 4 transmission, is characterized in that, step 4) in, the pass between described transition drum (9) and biased drum (4) is:

$\frac{r_3}{K_3}=\frac{r_1}{K_1};$

Wherein r ₃, K ₃be respectively the radius of transition drum (9), inhale pawl number, K ₁, r ₁be respectively suction pawl number, the radius of biased drum (4).

9. the method for bar flexibility according to claim 4 transmission, is characterized in that, step 4) in, described merging drum (11) and the pass of transmitting between drum (12), biased drum (4) are:

$\frac{r_5}{k_5}=\frac{r_4}{K_4}=\frac{r_1}{K_1};$

Wherein r ₅, K ₅be respectively the radius, the suction pawl number that merge drum (11), r ₄, K ₄be respectively the radius, the suction pawl number that transmit drum (12), K ₁, r ₁be respectively suction pawl number, the radius of biased drum (4).