CN216729071U

CN216729071U - Punching die for cylinder barrel of air cylinder

Info

Publication number: CN216729071U
Application number: CN202123451298.2U
Authority: CN
Inventors: 温玉勇; 李永健
Original assignee: Guangzhou Zhenggao Precision Machinery Co ltd
Current assignee: Guangzhou Zhenggao Precision Machinery Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-06-14
Anticipated expiration: 2031-12-31

Abstract

The utility model provides a punching die for a cylinder barrel of an air cylinder, which comprises a die main body and a punching device, wherein the die main body is of a hollow structure and is positioned at the inner side of the cylinder barrel of the air cylinder, n cover plates are arranged on the die main body, each cover plate is provided with m cutter holes, n and m are positive integers, the upper end of the punching device extends into an inner cavity of the die main body, the bottom end of the punching device is provided with a power mechanism, the upper end of the power mechanism is connected with a mandrel, the lower end of the mandrel is provided with a connecting end and is connected with the power mechanism, the upper end of the mandrel is a working end, the working end is provided with a working face, a punching cutter is arranged on the working face, the bottom end of the punching cutter is provided with a cutter holder, the punching cutter is in sliding connection with the working face of the mandrel through the cutter holder, the front end of the punching cutter is provided with cutter heads aligned with the cutter holes, one or more cutter holes are arranged at different heights and different directions of one or more cover plates, and then the corresponding punching cutter is matched with the corresponding punching cutter, realize the punching processing of many specifications part, diversified hole site.

Description

Punching die for cylinder barrel of air cylinder

Technical Field

The utility model relates to the field of punching dies, in particular to a punching die for a cylinder barrel of a cylinder.

Background

The stamping die is a special process device for processing metal materials or non-metal materials into parts or semi-finished products in cold stamping processing, and is also called as a cold stamping die. Punching is a press working method in which a material is pressed at room temperature by a die mounted on a press to be separated or plastically deformed to obtain a desired part, and a punching die is a method of press working to perform work by shearing.

The cylinder barrel of the air cylinder comprises an air suction hole and mounting holes, at least three mounting holes are generally required to be formed, in the machining process, in order to avoid accumulated errors, the three mounting holes are formed one by taking the air suction hole as a reference, however, the machining method is low in efficiency and poor in fault tolerance, and a part is unqualified when one mounting hole is unqualified; therefore, the research on the die capable of synchronously completing punching is of great significance; in the prior art, as in an automobile accessory four-side punching die, the automobile accessory four-side punching die comprises a die base, a punching die, an extrusion die and a driving cylinder, wherein the punching die is fixed at the central position of the die base through a screw, the periphery of the punching die is circular, the extrusion die is sleeved on the die base at the outer side of the punching die, extrusion block mounting grooves are formed in the four equal parts of the inner wall surface of the extrusion die, extrusion blocks are mounted in the extrusion block mounting grooves, one ends of the extrusion blocks gradually tilt towards the punching die to form tilting ends, a square fixing groove is formed in the middle of the punching die, a square fixing block is mounted in the square fixing groove, a workpiece-shaped groove is formed in the center of the square fixing block, through holes communicated with the grooves are formed in four wall surfaces of the square fixing block, the extrusion die can be driven to rotate by the driving cylinder, then the extrusion block extrudes the punching block to simultaneously punch the workpieces in different directions in the square fixing block; the synchronous punching of multiple hole sites is realized, but the technology can only realize parts of one specification, and the hole sites which are required to be arranged in equal intervals are arranged.

SUMMERY OF THE UTILITY MODEL

The utility model provides the punching die for the cylinder barrel of the air cylinder, which can realize punching of parts with multiple specifications and multiple hole positions in order to overcome the defects in the prior art.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

the utility model provides an air cylinder tube punching die for set up the mounting hole of air cylinder tube, includes mould main part and punching device, the mould main part is hollow structure, is located the inboard of air cylinder tube, installs n apron in the mould main part, has seted up m cutter holes on every apron, and n and m are positive integer, punching device's upper end is stretched into in the inner chamber of mould main part, punching device bottom is power unit, and the power unit upper end is connected with the dabber, and the dabber lower extreme is the link, is connected with power unit, and the dabber upper end is the work end, has the working face on the work end, installs the cutter that punches a hole on the working face, there is the blade holder bottom of cutter that punches a hole, and the cutter that punches a hole through blade holder and dabber's working face sliding connection, the front end of cutter that punches a hole has the tool bit with the cutter hole aligns.

Preferably, the working surface is an inclined surface inclined towards the center of the mandrel, a trapezoidal groove inclined towards the center of the mandrel is formed in the inclined surface, a trapezoidal block is arranged at the bottom end of the tool apron and is slidably mounted in the trapezoidal groove.

Preferably, the cover plate is mounted on the die main body through a bolt, the cover plate is provided with an inner groove on the back of the tool hole, the die main body is provided with a through hole communicated with the inner groove at a corresponding position, the front end of the tool apron is provided with a matching block inserted into a cavity formed by the inner groove and the through hole, and the tool bit is arranged on the matching block at the front end of the tool apron.

Preferably, the die main body and/or the cover plate are/is provided with a positioning hole for positioning an air suction hole of a cylinder barrel.

Preferably, every working face from the bottom up of dabber working end has cutter to dash hole site, cutter initial position and cutter to get in proper order and puts the position, the distance of cutter towards hole site and cutter initial position apart from the dabber central line is the stroke of punching a hole of tool bit.

Preferably, the power mechanism is a hydraulic mechanism oil cylinder, and the connecting end of the mandrel is connected with a piston rod of the hydraulic oil cylinder; the bottom end of the die main body is provided with a mounting seat, and the mounting seat is fixedly mounted on the workbench through bolts.

Preferably, a step structure for supporting the cylinder barrel is formed between the mounting seat and the die body.

Preferably, n is 3, m is 1, and the knife holes of the 3 cover plates are at the same level.

Preferably, the die main body and the cover plate integrally form a hollow cylinder structure, and the outer diameter of a cylinder formed by the die main body and the cover plate is 0.5-2 mm smaller than the inner diameter of a cylinder barrel of the cylinder to be punched.

Preferably, the upper end of the die body is an inner conical chamfer, and the top end of the die body is provided with a dustproof top cover through a bolt.

Compared with the prior art, the technical scheme of the utility model has the beneficial effects that: the utility model provides a punching die for a cylinder barrel of an air cylinder, which comprises a die main body and a punching device, wherein the die main body is of a hollow structure and is positioned at the inner side of the cylinder barrel of the air cylinder, n cover plates are arranged on the die main body, each cover plate is provided with m cutter holes, n and m are positive integers, the upper end of the punching device extends into an inner cavity of the die main body, the bottom end of the punching device is provided with a power mechanism, the upper end of the power mechanism is connected with a mandrel, the lower end of the mandrel is a connecting end and is connected with the power mechanism, the upper end of the mandrel is a working end, the working end is provided with a working face, a punching cutter is arranged on the working face, the bottom end of the punching cutter is provided with a cutter holder, the punching cutter is in sliding connection with the working face of the mandrel through the cutter holder, the front end of the punching cutter is provided with a cutter head aligned with the cutter holes, and one or more cutter holes are arranged at different heights and different directions of one or more cover plates, and a corresponding punching tool is matched, the power mechanism pushes the mandrel to stretch and retract so as to realize the stretching of the punching tool in the cover plate tool hole, thereby realizing the punching processing of parts with multiple specifications and multiple azimuth hole positions.

Drawings

Fig. 1 is a schematic structural view of a cylinder bore punching die in embodiment 1.

FIG. 2 is a schematic structural view of the mandrel of the cylinder tube punching die in example 1.

Fig. 3 is a schematic top view of the cylinder bore hole punching in embodiment 1.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is a schematic structural view of a cylinder tube punching die in embodiment 2.

Fig. 6 is a schematic structural view of a cylinder tube punching die in embodiment 4.

Wherein: 1. a mold body; 101. a cover plate; 102. a knife hole; 103. a mounting seat; 104. positioning holes; 2. a mandrel; 201. a working surface; 202. a trapezoidal groove; 203. and (5) punching cutters.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent;

for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.

Example 1

As shown in fig. 1, the embodiment provides a cylinder barrel punching die, which is used for forming a mounting hole of a cylinder barrel of a specification, and includes a die main body 1 and a punching device, where the die main body 1 is of a hollow structure and is located inside the cylinder barrel, n cover plates 101 are installed on the die main body 1, m cutter holes 102 are formed in each cover plate 101, n and m are positive integers, an upper end of the punching device extends into an inner cavity of the die main body 1, a power mechanism is installed at a bottom end of the punching device, a mandrel 2 is connected to an upper end of the power mechanism, as shown in fig. 2, a lower end of the mandrel 2 is a connecting end and is connected to the power mechanism, an upper end of the mandrel 2 is a working end, a working surface 201 is arranged on the working end, a punching cutter 203 is installed on the working surface 201, a bottom end of the punching cutter 203 is provided with a cutter holder, the punching cutter 203 is slidably connected to the working surface 201 of the mandrel 2 through the cutter holder, the front end of the punching tool 203 has a tool tip aligned with the tool hole 102.

As shown in fig. 3 to 4, the working surface 201 is an inclined surface inclined toward the center of the mandrel 2, the inclined surface is provided with a trapezoidal groove 202 inclined toward the center of the mandrel 2, the bottom end of the tool apron is a trapezoidal block, and the trapezoidal block is slidably mounted in the trapezoidal groove 202.

The cover plate 101 is installed on the die body 1 through bolts, the cover plate 101 is provided with an inner groove on the back of the tool hole 102, the die body 1 is provided with a through hole communicated with the inner groove at a corresponding position, the front end of the tool apron is provided with a matching block to be inserted into a cavity formed by the inner groove and the through hole, and the tool bit is arranged on the matching block at the front end of the tool apron.

It should be noted that, the cover plate 101 is installed on the die body 1 through bolts, and in the using process, for the cylinder barrels of different specifications, the cover plate 101 arranged at different positions through replacing the tool hole 102 can be adjusted to the corresponding position by adjusting the punching tool 203, so as to realize punching of the cylinder barrels of different specifications.

It should be noted that the matching block can match with the cavity formed by the inner groove and the through hole, and the tool hole 102 on the cover plate 101 can match with the tool bit to guide and protect the tool bit of the punching tool 203.

The die body 1 and/or the cover plate 101 are/is provided with a positioning hole 104 for positioning a suction hole of a cylinder barrel.

It should be noted that, the hole site design of the cylinder mounting hole is based on the air suction hole, so when the tool hole 102 of the punching die is opened, the positioning hole 104 of the air suction hole is opened based on the positioning hole 104, and in the preparation stage of the punching operation, the air suction hole 104 of the cylinder is first positioned by the positioning hole 104 and then fixed by the positioning rod.

Every working face 201 of 2 work ends of dabber from the bottom up has cutter to dash hole site, cutter initial position and cutter to get in proper order and puts the position, the distance of cutter punching hole site and cutter initial position apart from 2 central lines of dabber is the stroke of punching a hole of tool bit.

In the punching position of the cutter, the matching block at the front end of the punching cutter 203 is inserted into a cavity formed by the inner groove and the through hole, and the cutter head penetrates through the cutter hole 102 on the mold main body 1 and the cylinder barrel on the outer side of the mold main body 1; at the initial position of the cutter, the matching block at the front end of the punching cutter 203 is inserted into a cavity formed by the inner groove and the through hole, and the cutter head is inserted into the cutter hole 102 but does not penetrate through the cutter hole; at the tool pick-and-place position, the mating block at the front end of the punching tool 203 is separated from the cavity formed by the inner groove and the through hole, and the tool bit is separated from the tool hole 102.

The power mechanism is a hydraulic mechanism oil cylinder, and the connecting end of the mandrel 2 is connected with a piston rod of the hydraulic oil cylinder; the bottom end of the die main body 1 is provided with a mounting seat 103, and the mounting seat 103 is fixedly mounted on a workbench through bolts.

A step structure for supporting the cylinder tube is formed between the mounting seat 103 and the die main body 1.

The hydraulic oil cylinder is controlled by a controller, the controller presets a first height, a second height and a third height of the telescopic oil cylinder, the first height corresponds to a cutter punching position, the second height corresponds to a cutter initial position, and the third height corresponds to a cutter taking and placing position.

n is 3, m is 1, and 3 cutter holes 102 of the cover plates 101 are at the same level.

The die body 1 and the cover plate 101 integrally form a hollow cylinder structure, and the outer diameter of a cylinder formed by the die body 1 and the cover plate 101 is 0.5-2 mm smaller than the inner diameter of a cylinder barrel of an air cylinder to be punched.

The upper end of the die main body 1 is an inner conical chamfer, and the dustproof top cover is arranged at the top end of the die main body 1 through a bolt.

In the inner cavity of the die body 1, a movable cavity for the mandrel 2 to extend and retract is formed between the dustproof top cover and the mandrel 2.

When in use, the relative position of the mandrel 2 and the main body die is firstly adjusted, so that the punching cutter 203 is positioned at the initial cutter position; sleeving a cylinder barrel of the cylinder to be punched on the die main body 1 and supporting the cylinder barrel by the mounting seat 103, rotating the cylinder barrel of the cylinder to align with the positioning hole 104, and fixing the cylinder barrel of the cylinder by using the positioning rod; after the preparation, a controller is started, a piston rod of a hydraulic oil cylinder extends out, a mandrel 2 extends out under the pushing of the piston rod, a punching cutter 203 punches out a cutter hole 102 under the pushing of a trapezoidal groove 202 of a working face 201 and the action of a matching block, when the cutter punching position of the working face 201 moves to the position of the punching cutter 203, the hydraulic oil cylinder stops extending out, the punching cutter 203 penetrates through a cylinder barrel of the air cylinder to complete hole opening, the hydraulic oil cylinder starts retracting, the piston rod drives the mandrel 2 to move downwards, the punching cutter 203 retracts under the action of the trapezoidal groove 202 of the working face 201, when the cutter initial position of the working face 201 moves downwards to the position of the punching cutter 203, the oil cylinder stops, and the punching operation is finished.

Example 2

As shown in fig. 5, the present embodiment provides a cylinder barrel punching die, which is used for forming mounting holes of two specifications of cylinder barrels, and includes a die main body 1 and a punching device, where the die main body 1 is of a hollow structure and is located inside the cylinder barrel, 3 cover plates 101 are installed on the die

main body

1, 2 tool holes 102 are formed in two heights of each cover plate 101 in the same direction, the punching device is arranged in an inner cavity of the punching die, the bottom end of the punching device is a power mechanism, the upper end of the power mechanism is connected with a mandrel 2, the lower end of the mandrel 2 is connected with the power mechanism for a connection end, the upper end of the mandrel 2 is a working end, a working face 201 is arranged on the working end, a punching tool 203 is installed on the working face 201, the bottom end of the punching tool 203 is connected to the working face 201 of the mandrel 2 in a tool holder matching manner, and a tool bit is aligned with the tool hole 102 at the front end of the punching tool 203.

The height of the first cutter hole 102 of the cover plate 101 is 50mm, the height of the second cutter hole 102 is 75mm, and a group of cutter holes 102 with the same height respectively correspond to the cylinder barrel of the first specification cylinder and the cylinder barrel of the second specification cylinder.

The cover plate 101 is further provided with two auxiliary holes, and the auxiliary holes are partially overlapped with an inner groove at the back of the knife hole 102.

The difference between the embodiment and the cylinder tube punching die in embodiment 1 is that in embodiment 2, the installation holes of two different specifications of cylinder tubes can be formed by selecting the tool holes 102 with different heights and adjusting the positions of the tools.

When the punching tool is used, the punching operation process is the same as that in embodiment 1, when a hole needs to be formed in a cylinder barrel of a cylinder with another height specification, the controller controls the cylinder to contract, the piston rod drives the mandrel 2 to move downwards, the working face 201 continues to move downwards at the initial position of the tool, the operation is stopped when the working face moves to the tool taking and placing position, the matching block at the front end of the punching tool 203 is separated from a cavity formed by the inner groove and the through hole at the moment, the cylinder stops moving downwards, the hydraulic cylinder is started to extend out after the matching block and the cavity are kept separated through the auxiliary hole, the mandrel 2 ascends, the tool ascends along with the mandrel 2 to the height of the second tool hole 102, and the matching block at the front end of the punching tool 203 is guided into the cavity formed by the inner groove and the through hole behind the second tool hole 102 through the auxiliary hole, so that the position of the punching tool 203 is changed.

Example 3

The embodiment provides a many position cut-out press of part, a spare part for seting up the hole site height difference, including mould main part 1 and punching device, mould main part 1 is hollow structure, be located the inboard of cylinder barrel, install 3 apron 101 on the mould main part 1, every apron 101 has seted up a knife hole 102 on the co-altitude, punching device sets up in the inner chamber of cut-out press, the punching device bottom is power unit, the power unit upper end is connected with

dabber

2, 2 lower extremes of dabber are connected with power unit for the link, 2 upper ends of dabber are the work end, there is working face 201 on the work end, install punching tool 203 on the working face 201, there is the blade holder cooperation to connect on the working face 201 of dabber 2 bottom of punching tool 203, there is the tool bit and aligns with knife hole 102 in the front end of punching tool 203.

The height of the knife hole 102 of the first cover plate 101 is 50mm, the height of the knife hole 102 of the second cover plate 101 is 60mm, and the height of the third cover plate 101 is 70 mm.

The working surface 201 is an inclined surface inclined towards the center of the mandrel 2, a trapezoidal groove 202 inclined towards the center of the mandrel 2 is formed in the inclined surface, a trapezoidal block is arranged at the bottom end of the tool apron and can be slidably mounted in the trapezoidal groove 202.

The working end of the mandrel 2 is provided with a first tool punching hole position, a first tool initial position and a first tool picking and placing position corresponding to a first working surface 201 of the first cover plate 101, a second tool punching hole position, a second tool initial position and a second tool picking and placing position corresponding to a second working surface 201 of the second cover plate 101, and a third tool punching hole position, a third tool initial position and a third tool picking and placing position corresponding to a third working surface 201 of the third cover plate 101.

The distance between the punching position of the cutter and the initial position of the cutter and the central line of the mandrel 2 is the punching stroke of the cutter head.

The punching strokes of the three groups of cutters are the same, the width of the matching block on the back surface of the first cover plate 101 is smaller than that of the matching block on the back surface of the second cover plate 101, and the width of the matching block on the back surface of the second cover plate 101 is smaller than that of the matching block on the back surface of the third cover plate 101.

The specific difference between this embodiment and embodiment 1 is that this embodiment realizes synchronous tapping on parts with different hole site heights by selecting cutters with different specifications.

When the punching machine is used, under the action of the matching blocks, the first cutter is located at the first cutter initial position, the second cutter is located at the second cutter initial position, the third cutter is located at the third cutter initial position, and the punching operation process is the same as that in the embodiment 1.

In addition to the above, this function can be achieved by adjusting the inclination angle of the trapezoidal groove 202 on the working surface 201.

Example 4

As shown in fig. 6, the present embodiment provides a square part punching die, which is used for forming holes on a square part, and comprises a die main body 1 and a punching device, wherein the outer side of the die main body 1 is of a cubic structure, the middle of the die main body is of a hollow cylindrical structure, the die main body is located on the inner side of the part to be formed, 4 cover plates 101 are installed on the die main body 1, 1 knife hole 102 is formed on each cover plate 101, the punching device is arranged in a hollow inner cavity of the punching die, the bottom of the punching device is a power mechanism, the upper end of the power mechanism is connected with a mandrel 2, the lower end of the mandrel 2 is connected with the power mechanism for connecting, the upper end of the mandrel 2 is a working end, the working end is provided with a working surface 201, a punching tool 203 is installed on the working surface 201, the bottom end of the punching tool 203 is connected with the working surface 201 of the mandrel 2 in a matched mode through a tool apron, and the front end of the punching tool 203 is provided with a tool bit aligned with the tool hole 102.

The difference between this embodiment and the cylinder tube cut-out press in embodiment 1 lies in, this embodiment realizes punching a hole to different shape spare part for the square structure of adaptation processing spare part through adjusting 1 structure of mould main part, also can be suitable for the corresponding adjustment in embodiment 2 and embodiment 3 simultaneously, realizes the synchronous of many specifications, diversified hole site and offers.

The same or similar reference numerals correspond to the same or similar parts;

the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent;

it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A punching die for an air cylinder barrel is used for forming an installation hole of the air cylinder barrel and is characterized by comprising a die main body (1) and a punching device, wherein the die main body (1) is of a hollow structure and is positioned on the inner side of the air cylinder barrel, n cover plates (101) are arranged on the die main body (1), m cutter holes (102) are formed in each cover plate (101), n and m are positive integers, the upper end of the punching device extends into an inner cavity of the die main body (1), a power mechanism is arranged at the bottom end of the punching device, a mandrel (2) is connected to the upper end of the power mechanism, the lower end of the mandrel (2) is a connecting end and is connected with the power mechanism, a working end is arranged at the upper end of the mandrel (2), a working face (201) is arranged on the working end, a punching cutter (203) is arranged on the working face (201), a cutter holder is arranged at the bottom end of the punching cutter (203), and the punching cutter (203) is in sliding connection with the working face (201) of the mandrel (2) through the cutter holder, the front end of the punching cutter (203) is provided with a cutter head which is aligned with the cutter hole (102).

2. The cylinder barrel punching die according to claim 1, wherein the working surface (201) is an inclined surface inclined towards the center of the mandrel (2), a trapezoidal groove (202) inclined towards the center of the mandrel (2) is formed in the inclined surface, the bottom end of the tool apron is a trapezoidal block, and the trapezoidal block is slidably mounted in the trapezoidal groove (202).

3. The cylinder tube punching die of claim 2, wherein the cover plate (101) is mounted on the die body (1) through bolts, the cover plate (101) is provided with an inner groove on the back of the tool hole (102), the die body (1) is provided with a through hole communicated with the inner groove at a corresponding position, the front end of the tool apron is provided with a matching block inserted into a cavity formed by the inner groove and the through hole, and the tool bit is arranged on the matching block at the front end of the tool apron.

4. The cylinder tube punching die according to claim 3, wherein the die main body (1) and/or the cover plate (101) are/is provided with positioning holes (104) for positioning suction holes of the cylinder tube.

5. The cylinder barrel punching die according to claim 3, wherein each working face (201) of the working end of the mandrel (2) is provided with a cutter punching position, a cutter initial position and a cutter picking and placing position from bottom to top in sequence, and the distance between the cutter punching position and the cutter initial position and the central line of the mandrel (2) is the punching stroke of the cutter head.

6. The punching die for the cylinder barrel of the air cylinder as claimed in claim 5, wherein the power mechanism is a hydraulic oil cylinder, and the connecting end of the mandrel (2) is connected with a piston rod of the hydraulic oil cylinder; the bottom end of the die main body (1) is provided with a mounting seat (103), and the mounting seat (103) is fixedly mounted on the workbench through bolts.

7. The cylinder bore punching die according to claim 6, characterized in that a step structure for supporting the cylinder bore is formed between the mounting seat (103) and the die body (1).

8. The cylinder bore punching die according to any one of claims 1 to 7, wherein n is 3, m is 1, and the tool holes (102) of the 3 cover plates (101) are at the same level.

9. The cylinder barrel punching die according to any one of claims 1 to 7, wherein the die main body (1) and the cover plate (101) integrally form a hollow cylinder structure, and the outer diameter of a cylinder formed by the die main body (1) and the cover plate (101) is 0.5 to 2mm smaller than the inner diameter of a cylinder barrel to be punched.

10. The cylinder tube punching die of claim 9, wherein the upper end of the die main body (1) is an inner tapered chamfer, and a dustproof top cover is mounted at the top end of the die main body (1) through a bolt.