CN215511715U - Diesel engine sand section mould drilling equipment - Google Patents

Abstract

The utility model discloses a diesel engine sand mold drilling equipment, which comprises a support seat, a drill body, a sleeve and a fixture; the support seat includes a support leg and a support table; the fixture is fixed on the lower surface of the support table; the sleeve penetrates through the support Table; drill body includes telescopic cylinder, drill rod, drill bit, pressing plate; fixture includes clamping jaw and ball screw; clamping jaw includes connecting plate, hinge shaft, hinge arm, claw plate and torsion spring; inner cylinder and outer cylinder are threaded Adjust the height of the telescopic cylinder to adjust the drilling depth. A scale line is provided on the outside of the inner cylinder, so that the depth of the drilling can be precisely controlled; the setting of the ball screw can be applied to sand molds of different sizes in the left and right directions; the clamping jaws include The torsion spring and the claw plate can be reset to the vertical state under the action of the torsion spring after the claw plate swings outward, which improves the limiting speed of multiple sand molds when drilling, thereby improving the drilling efficiency.

Description

Diesel engine sand section mould drilling equipment

Technical Field

The utility model relates to the technical field of diesel engine manufacturing equipment, in particular to drilling equipment for a sand mould of a diesel engine.

Background

Diesel engine's casing often adopts the cast mode of sand mould to produce, the sand mould need drill out the bleeder vent on the molding sand after the molding sand is filled and tamps, present drilling mode all is artifical inserts the bleeder vent with the taper rod, however, diesel engine's shell is big, the molding sand is thick, the drilling depth is difficult to be held in artifical drilling, the gas escape in the die cavity when the venthole bores shallowly to be unfavorable for the casting, bore dark destroying the die cavity easily, and diesel engine's shell is big, the venthole is dark, difficult hand of exempting from during artifical drilling is trembled and is leaded to the molding sand not hard up, cause the die cavity to sink easily.

SUMMERY OF THE UTILITY MODEL

The utility model mainly solves the technical problems that: the drilling equipment for the sand mould of the diesel engine is provided, and the problems in the background art can be solved.

In order to solve the main technical problems, the following technical scheme is adopted:

a drilling device for a sand mould of a diesel engine comprises a supporting seat, a drill body, a sleeve and a clamp; the supporting seat comprises supporting legs and a supporting platform; the clamp is fixed on the lower surface of the support platform; the sleeve penetrates through the support table, and the top surface of the sleeve is flush with the upper surface of the support table; the drill body comprises a telescopic cylinder, a drill rod, a drill bit and a pressing plate; the top of the drill rod is connected with the pressing plate, and the bottom of the drill rod is connected with the drill bit; the drill bit is inserted into the sleeve and can extend out of the sleeve under the action of external force; the telescopic cylinder is sleeved outside the drill rod and positioned between the pressing plate and the supporting platform; the clamp comprises clamping jaws and a ball screw; the rotating directions of the two ends of the ball screw are opposite, and the two ends are rotatably connected to the lower surface of the supporting platform; the clamping jaws comprise two bilaterally symmetrical moving blocks which are respectively fixed on two ends of the ball screw; the clamping jaw comprises a connecting plate, a hinge shaft, a hinge arm, a jaw plate and a torsion spring; the connecting plate is fixed on a moving block of the ball screw, and the articulated shaft is fixed at the front end and the rear end of the connecting plate; one end of the articulated arm is rotatably connected with the articulated shaft, and the other end of the articulated arm is fixedly connected with the claw plate; one end of the torsion spring is fixedly connected with the connecting plate, and the other end of the torsion spring is fixedly connected with the hinged arm; when the claw plate is opened outwards, the torsion spring can drive the claw plate to return.

Preferably, the telescopic cylinder comprises an inner cylinder and an outer cylinder which are connected through threads; the outer peripheral surface of the inner cylinder is provided with scale marks; the inner cylinder is fixed on the upper surface of the support table; the drill rod penetrates through the inner cylinder and can move back and forth along the inner cylinder; the size of the pressing plate is larger than the outer diameter of the outer barrel.

Preferably, a return spring sleeved on the periphery of the drill rod is arranged between the top surface of the inner cylinder and the bottom surface of the pressing plate.

Preferably, the outer surface of the outer cylinder is provided with three extension arms surrounding the outer cylinder.

Preferably, one end of the ball screw extends to the outer side of the support table, and the end of the ball screw is connected with a hand wheel.

Preferably, the connecting plate is further provided with a top baffle extending towards the inside of the clamping jaw.

Preferably, the number of the supporting legs is four, and the supporting legs are respectively fixed at four corners of the supporting platform; the supporting legs comprise an inner rod and an outer rod which are sleeved together; a row of first positioning holes are distributed on the inner rod along the axial direction of the inner rod; a spring bolt and a second positioning hole are arranged on the outer side of the outer rod; the spring bolt passes through the first positioning hole and the second positioning hole so as to fix the inner rod and the outer rod together.

Compared with the prior art, the sand section mould applied to the diesel engine has the following advantages:

(1) the height of the telescopic cylinder is adjusted by the inner cylinder and the outer cylinder through threads, so that the distance between the top surface of the outer cylinder and the pressing plate is adjusted, the pressing plate can only descend to the top surface of the outer cylinder during drilling, and the bottom surface of the drill bit is flush with the lower end surface of the sleeve, so that the height change of the telescopic cylinder is the change of the drilling depth; the inner tube outside is provided with the scale mark to make the degree of depth of drilling can accurate control.

(2) The clamp is arranged and comprises clamping jaws and a ball screw, and the ball screw can be arranged in a sand mold die which is suitable for different sizes in the left and right directions; the clamping jaw comprises a torsion spring and a jaw plate, the jaw plate can reset to a vertical state under the action of the torsion spring after swinging outwards, the limiting speed of a plurality of sand mould dies during drilling is improved, and therefore the drilling efficiency is improved.

(3) The supporting legs can be stretched and retracted, so that the sand mold is suitable for sand mold molds with different heights; the supporting legs and the ball screw are matched for use, so that the size range of the sand mold die applicable to the utility model is wider.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some examples of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

Fig. 1 is a schematic overall structure diagram of a first embodiment of the present invention;

FIG. 2 is an enlarged schematic view of a clamping jaw according to a first embodiment of the present invention;

FIG. 3 is a side view of a jaw according to a first embodiment of the present invention;

fig. 4 is a schematic overall structure diagram of a second embodiment of the present invention.

In the figure: 1 is a supporting seat, 11 is a supporting table;

12 is a supporting leg, 121 is an inner rod, 122 is an outer rod, and 123 is a spring bolt;

2 is a sleeve;

3 is a clamp, 31 is a ball screw;

32 is a clamping jaw, 321 is a connecting plate, 322 is a hinged shaft, 323 is a hinged arm, 324 is a jaw plate, 325 is a torsion spring, and 326 is a top baffle;

33 is a hand wheel;

4 is a drill body;

41 is a telescopic cylinder, 411 is an inner cylinder, 412 is an outer cylinder, and 413 is an extension arm;

42 is a drill rod, 43 is a drill bit, 44 is a pressing plate, and 45 is a return spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to specific implementation conditions.

The first embodiment,

Referring to fig. 1-3, a diesel engine sand pattern mold drilling device includes a support base 1, a drill body 4, a sleeve 2 and a clamp 3; the supporting seat 1 comprises supporting legs 12 and a supporting platform 11, wherein the four supporting legs 12 are positioned at four corners of the supporting platform 11; the clamp 3 is fixed on the lower surface of the support platform 11; the sleeve 2 runs through a supporting table 11 and the top surface is flush with the upper surface of the supporting table 11, the upper end surface of the sleeve 2 is flush with the upper surface of the supporting table 11, and the lower end surface of the sleeve extends out of the supporting table 11.

The drill body 4 comprises a telescopic cylinder 41, a drill rod 42, a drill bit 43 and a pressing plate 44; the top of the drill rod 42 is connected with the pressing plate 44, and the bottom is connected with the drill bit 43; the axes of the drill bit 43 and the drill rod 42 are overlapped after being translated up and down; the structural section formed by the drill rod 42, the pressing plate 44 and the drill bit 43 is T-shaped; the drill rod 42 and the drill bit 43 penetrate through the telescopic cylinder 41, the drill bit 43 is positioned in the sleeve 2, and the bottom surface of the drill bit 43 is flush with the edge of the sleeve 2; when the pressing plate 44 is pressed by an external force, the drill 43 can extend out of the lower end surface of the sleeve 2; the telescopic cylinder 41 comprises an inner cylinder 411 and an outer cylinder 412 which are connected through threads; the inner cylinder 411 and the outer cylinder 412 are sleeved together, and the outer cylinder 412 can change the axial length of the telescopic cylinder 41 through rotation; the outer peripheral surface of the inner cylinder 411 is provided with scale marks extending along the axial length thereof; the inner cylinder 411 is fixed on the upper surface of the support platform 11; the drill rod 42 passes through the inner cylinder 411 and can move back and forth along the inner cylinder 411; the plane size of the pressing plate 44 is larger than the outer diameter of the outer cylinder 412, the distance between the top surface of the telescopic cylinder 41 and the pressing plate 44 is the distance that the pressing plate 44 can descend, and the distance is the distance that the drill 43 extends out of the sleeve 2, namely the drilling depth; the drilling depth can be changed by changing the relative distance between the inner cylinder 411 and the outer cylinder 412; in order to facilitate the rotation of the outer cylinder 412, three extension arms 413 are fixed on the outer surface of the outer cylinder 412 through welding; the three extension arms 413 are evenly distributed on the outer circumferential surface of the outer cylinder 412 and surround the outer circumferential surface.

In order to facilitate the automatic return after the pressing plate 44 is pressed, a return spring 45 is arranged between the top surface of the inner cylinder 411 and the lower surface of the pressing plate 44, and the return spring 45 is sleeved on the periphery of the drill rod 42; in the initial state of the return spring 45, the bottom surface of the bit 43 is flush with the edge of the sleeve 2; when the pressing plate 44 is pressed downwards, the return spring 45 is in a compressed state, and the drill 43 extends out of the sleeve 2; when the downward external force on the pressing plate 44 is removed, the return spring 45 automatically returns, and the drill 43 is completely retracted into the sleeve 2.

The clamp 3 is mainly used for fixing a sand mould die so as to avoid the position unfixed of the sand mould when drilling; the clamp 3 comprises a clamping jaw 32 and a ball screw 31; the turning directions of the two ends of the ball screw 31 are opposite, the two ends are fixed on the lower surface of the support platform 11 through bearings and bearing seats, and the ball screw 31 and the sleeve 2 are arranged in a front-back staggered manner; moving blocks are arranged at two ends of the ball screw 31, and the structures of the moving blocks are set according to the prior art; the clamping jaws 32 comprise two bilaterally symmetrical moving blocks which are respectively fixed at two ends of the ball screw 31; after the ball screw 31 rotates, the two clamping jaws 32 are driven to approach or move away from each other; one end of the ball screw 31 extends to the outer side of the supporting table 11, the end portion extending to the outer side of the supporting table 11 is connected with a hand wheel 33, and the hand wheel 33 is rotated positively or reversely to drive the two clamping jaws 32 to be close to each other to clamp or to be away from each other to loosen.

The clamping jaw 32 comprises a connecting plate 321, a hinge shaft 322, a hinge arm (323), a jaw plate 324 and a torsion spring 325; the connecting plate 321 is fixed on the moving block of the ball screw 31, and the hinge shaft 322 is fixed at the front end and the rear end of the connecting plate 321; the connecting plate 321 is a flat plate with a concave structure; one end of the hinge arm 323 is rotatably connected with the hinge shaft 322, and the other end is fixedly connected with the claw plate 324; the jaw plate 324 is a flat plate, and is mainly used for clamping a sand mold die; the two claw plates 324 approach each other to limit the sand mold die; one end of the torsion spring 325 is fixedly connected with the connecting plate 321, and the other end is fixedly connected with the hinge arm 323; the hinge arms 323 are typically two and are located on either side of the claw plate 324; when the claw plate 324 is opened outward, the torsion spring 325 can drive the claw plate 324 to return, and the claw plate 324 is vertical in the initial position state; according to the size on the left and right sides of the sand mould, the hand wheel 33 is rotated to move the clamping jaws 32, then one of the clamping jaws 32 is pulled open towards the outer side, the sand mould is placed in the clamping jaws 32, then the clamping jaws 32 are loosened to realize clamping, the whole operation is simpler, and the hand wheel 33 does not need to be frequently rotated when the same batch of sand section mould is drilled, so that the drilling efficiency is improved.

In order to further ensure the position accuracy of the sand mold in the drilling process and to ensure that the position of the sand mold is more stable, the connecting plate 321 is further provided with a top baffle 326 extending towards the inner side of the clamping jaw 32, the top baffle 326 is horizontal, and the top baffle 326 can limit the sand mold in the up-and-down direction.

Example II,

Referring to fig. 2-4, the difference between the second embodiment and the first embodiment is that on the basis of the first embodiment, the leg 12 includes an inner rod 121 and an outer rod 122 sleeved together; a row of first positioning holes are distributed on the inner rod 121 along the axial direction; a spring bolt 123 and a second positioning hole are arranged on the outer side of the outer rod 122; the spring bolt 123 passes through the first positioning hole and the second positioning hole so as to fix the inner rod 121 and the outer rod 122 together; the inner rod 121 is of a solid structure, the outer rod 122 is of a cylindrical structure, the inner rod 121 is sleeved on the inner side of the outer rod 122 and can slide up and down, and the support table 11 can be adjusted in height by stretching of the support legs 12, so that the sand mold is suitable for sand mold molds with different heights.

The working process of the utility model is as follows: in the first embodiment, the supporting legs 12 are placed on a plane, and the hand wheels 33 are rotated according to the distance between the left side and the right side of the sand mold die, so that the distance between the inner sides of the two claw plates 324 is matched with the distance between the left side and the right side of the sand mold die; rotating the outer cylinder 412 in the horizontal direction to adjust the distance from the top surface of the outer cylinder 412 to the lower surface of the pressing plate 44; one of the jaw plates 324 is pulled outwards, one side of the sand mould die is pressed against the inner side of the other jaw plate 324, then the jaw plate 324 is loosened, and the jaw plate 324 automatically resets and presses against the other side of the sand mould die under the action of a torsion spring 325; the pressing plate 44 is pressed downwards by means of external force, at the moment, the drill bit 43 extends out of the sleeve 2, drilling is carried out on the surface of the sand mould, and after drilling, the pressing plate 44 automatically resets under the action of the reset spring 45;

in the second embodiment, on the basis of the first embodiment, when sand mold molds with different heights need to be applied, the spring bolt 123 is pulled outwards, the spring bolt 123 is far away from the second positioning hole and one of the first positioning holes, the inner rod 121 is moved upwards or downwards, after the inner rod is moved to a required position, the spring bolt 123 is loosened, the spring bolt 123 is inserted into the second positioning hole and the other first positioning hole, the height adjustment of one supporting leg 12 is completed, and then the heights of the four supporting legs 12 are sequentially adjusted.

It should be noted that the terms "upper, lower, left, right, inner and outer" in the present invention are defined based on the relative positions of the components in the drawings, and are only used for clarity and convenience of the technical solution, and it should be understood that the application of the terms of orientation does not limit the scope of the present application.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims (7)

1. The utility model provides a diesel engine sand section mould drilling equipment which characterized in that: comprises a supporting seat (1), a drill body (4), a sleeve (2) and a clamp (3); the supporting seat (1) comprises supporting legs (12) and a supporting platform (11); the clamp (3) is fixed on the lower surface of the support table (11); the sleeve (2) penetrates through the support table (11) and the top surface of the sleeve is flush with the upper surface of the support table (11);

wherein the drill body (4) comprises a telescopic cylinder (41), a drill rod (42), a drill bit (43) and a pressing plate (44); the top of the drill rod (42) is connected with the pressing plate (44), and the bottom of the drill rod is connected with the drill bit (43); the drill bit (43) is inserted into the sleeve (2) and can extend out of the sleeve (2) under the action of external force; the telescopic cylinder (41) is sleeved on the outer side of the drill rod (42) and is positioned between the pressing plate (44) and the supporting platform (11);

the clamp (3) comprises a clamping jaw (32) and a ball screw (31); the rotating directions of two ends of the ball screw (31) are opposite, and the two ends are rotatably connected to the lower surface of the support platform (11); the clamping jaws (32) comprise two clamping jaws which are bilaterally symmetrical and are respectively fixed on the moving blocks at the two ends of the ball screw (31); the clamping jaw (32) comprises a connecting plate (321), a hinge shaft (322), a hinge arm (323), a jaw plate (324) and a torsion spring (325); the connecting plate (321) is fixed on a moving block of the ball screw (31), and the hinge shaft (322) is fixed at the front end and the rear end of the connecting plate (321); one end of the hinge arm (323) is rotatably connected with the hinge shaft (322), and the other end of the hinge arm is fixedly connected with the claw plate (324); one end of the torsion spring (325) is fixedly connected with the connecting plate (321), and the other end of the torsion spring is fixedly connected with the hinged arm (323); when the claw plate (324) is opened outward, the torsion spring (325) can drive the claw plate (324) to return.

2. The diesel engine sand mold drilling apparatus as set forth in claim 1, wherein: the telescopic cylinder (41) comprises an inner cylinder (411) and an outer cylinder (412) which are connected in a threaded manner; the outer peripheral surface of the inner cylinder (411) is provided with scale marks; the inner cylinder (411) is fixed on the upper surface of the support table (11); the drill rod (42) penetrates through the inner cylinder (411) and can move back and forth along the inner cylinder (411); the size of the pressing plate (44) is larger than the outer diameter of the outer cylinder (412).

3. The diesel engine sand mold drilling apparatus as set forth in claim 2, wherein: and a return spring (45) sleeved on the periphery of the drill rod (42) is arranged between the top surface of the inner cylinder (411) and the bottom surface of the pressing plate (44).

4. The diesel engine sand mold drilling apparatus as set forth in claim 2, wherein: the outer surface of the outer cylinder (412) is provided with three extension arms (413) which encircle the outer cylinder.

5. The diesel engine sand mold drilling apparatus as set forth in claim 1, wherein: one end of the ball screw (31) extends to the outer side of the support table (11) and the end of the ball screw is connected with a hand wheel (33).

6. The diesel engine sand mold drilling apparatus as set forth in claim 1, wherein: the connecting plate (321) is also provided with a top baffle (326) extending towards the inner side of the clamping jaw (32).

7. The diesel engine sand mold drilling apparatus as set forth in claim 1, wherein: four supporting legs (12) are arranged and are respectively fixed at four corners of the supporting platform (11); the supporting legs (12) comprise an inner rod (121) and an outer rod (122) which are sleeved together; a row of first positioning holes are distributed on the inner rod (121) along the axial direction; a spring bolt (123) and a second positioning hole are arranged on the outer side of the outer rod (122); the spring bolt (123) passes through the first positioning hole and the second positioning hole so as to fix the inner rod (121) and the outer rod (122) together.

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