Stamping die for bent pipe punching

Abstract

The utility model relates to the field of stamping, in particular to a stamping die for bent pipe punching, which comprises a bottom plate and a top plate, the top plate is positioned right above the bottom plate and can move up and down, a positioning component and a stamping component are arranged on the bottom plate, and the positioning component comprises a positioning table and two positioning baffles arranged at intervals. An arc groove is formed in the positioning table, the distance between the positioning table and the positioning baffle is smaller than the length of the bent pipe, the stamping assembly comprises two limiting blocks which can be close to or away from each other, limiting semicircular grooves are formed in the end faces, close to each other, of the two limiting blocks, and a plurality of horizontal extrusion rods are further fixedly arranged in the limiting semicircular grooves. Through the arrangement of the bottom plate, the top plate, the pressing block, the extrusion rod, the limiting block, the first inclined plane and the second inclined plane, transverse punching of the bent pipe is achieved, and therefore the position degree and the coaxiality of holes machined in the two sides are good.

Description

Technical Field

[0001] This utility model relates to the field of stamping, and in particular to a stamping die for punching holes in bent pipes. Background Technology

[0002] There is a type of part that requires bending a tubular component first, followed by drilling holes in the bent tube. Current processing methods for this part involve first bending the tube with a tube bending machine, then drilling or milling the hole. However, these methods produce burrs on the inside of the tubular component, requiring additional deburring. Furthermore, drilling or milling cannot directly produce an inward flange, necessitating additional stamping. Additionally, drilling or milling requires flipping the tube for secondary processing, resulting in inconsistent hole positioning.

[0003] Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a stamping die for punching holes in bent pipes. This utility model is achieved through the following technical solution:

[0005] A stamping die for punching holes in bent pipes includes a base plate and a top plate. The top plate is located directly above the base plate and is movable up and down. The base plate is provided with a positioning component and a stamping component. The positioning component includes a positioning platform and two spaced positioning baffles. The positioning platform is provided with an arc groove, and the distance between the positioning platform and the positioning baffles is less than the length of the bent pipe. The stamping component includes two limiting blocks that can move closer or further apart from each other. A limiting semicircular groove is provided on the end face of the two limiting blocks that are close to each other. A plurality of extrusion rods are also provided in the limiting semicircular grooves, and the extrusion rods are horizontal.

[0006] In the above technical solution: the base plate is used to set the positioning component and the stamping component; the top plate is used to connect with the stamping spindle and drive the stamping component to achieve stamping; the positioning table is used to set the arc groove, which is used to position the end of the bent tube; two spaced positioning baffles are used to position the bent part of the bent tube; the limiting block is used to clamp the bent tube in the middle after approaching to achieve limiting; the extrusion rod is used to stamp the bent tube, thereby realizing punching and flanging in one step.

[0007] A further feature of this invention is that the extrusion rod includes a rod body and an end, one end of the rod body is an arc surface, the end is fixedly disposed on this end, the rod body and the end are coaxially arranged, and the diameter of the end is smaller than the diameter of the rod body.

[0008] In the above technical solution: the setting of the rod body and the end head makes it so that when the extrusion rod and the bent tube come into contact, the end head contacts the bent tube first, thereby applying greater pressure through a smaller contact area, thus punching out a small hole. Subsequently, the end of the rod body contacts the bent tube, and the arc surface expands the small hole and punches out a flange.

[0009] A further feature of this invention is that two pressure blocks are spaced apart on the top plate, each pressure block has a first inclined surface, and the stamping assembly has a second inclined surface, with the first inclined surface cooperating with the second inclined surface.

[0010] In the above technical solution: the pressure block is used to contact the stamping component, so that the first inclined surface and the second inclined surface contact each other, thereby converting the vertical movement of the pressure block into the horizontal movement of the sliding block of the stamping component.

[0011] A further feature of this invention is that the stamping assembly includes a sliding block, which is slidably connected to the base plate. The side of the sliding block is connected to the limiting block, and the second inclined surface is disposed on the sliding block. The extrusion rod is fixedly disposed on the side of the sliding block near the limiting block, and the extrusion rod extends out from the limiting semicircular groove after passing through the limiting block.

[0012] In the above technical solution: the sliding block is used to transmit power, converting the power from the pressure block into horizontal movement and transmitting it to the limiting block, thereby causing the extrusion rod to contact the bent tube and realize stamping.

[0013] A further feature of this invention is that it includes a pull-back assembly, which comprises a fixing block, an abutment block, and a plurality of pull rods. The fixing block is disposed on one side of the base plate, the abutment block is fixedly disposed on the base plate, one end of the pull rod passes through the abutment block and is fixedly connected to a sliding block, a first mounting hole is provided on the side of the fixing block, the other end of the pull rod is located in the first mounting hole, a first spring is also provided in the first mounting hole, one end of the first spring contacts the pull rod, and the other end contacts the abutment block.

[0014] In the above technical solution: the pull-back component is used to pull back the sliding block and the limiting block after stamping, so as to facilitate the removal of the processed bent pipe; the fixing block is used to set the first mounting hole; the first mounting hole is used to set the first spring; the abutment block is used to contact the first spring; the first spring is used to store elastic potential energy when the sliding block drives the pull rod to move, and release the elastic potential energy when the sliding block is not enough to push the pressure block, so as to pull the sliding block back to the initial position.

[0015] A further feature of this invention is that a plurality of guide rods are provided on the side of the sliding block near the limiting block, and a guide hole is provided on the limiting block, with the guide rods extending into the guide hole.

[0016] In the above technical solution: the guide rod is used to cooperate with the guide hole to realize the relative movement between the limiting block and the sliding block, and to limit the movement direction of the limiting block.

[0017] A further feature of this invention is that a plurality of second mounting holes are provided on the side of the sliding block near the limiting block, and a second spring is provided in the second mounting hole. One end of the second spring contacts the second mounting hole, and the other end keeps in contact with the limiting block.

[0018] In the above technical solution: the second mounting hole is used to install the second spring; the second spring is used to provide buffering and to make the limiting block contact the bent tube before the extrusion rod.

[0019] A further feature of this invention is that a slide rail is provided on the base plate, and the slide rail is connected to the sliding block.

[0020] In the above technical solution: the slide rail is used to limit the movement direction of the sliding block.

[0021] This utility model discloses a stamping die for punching holes in bent pipes, which, compared with the prior art:

[0022] This utility model achieves lateral punching of the bent pipe by setting a bottom plate, a top plate, a pressure block, an extrusion rod, a limiting block, and a first inclined surface and a second inclined surface, thereby making the positional accuracy and coaxiality of the holes processed on both sides good.

[0023] This invention, through the design of the extrusion rod body and end, enables the hole and flange to be formed in one step without burrs. Attached Figure Description

[0024] Figure 1 This is a side view of the present invention;

[0025] Figure 2 This is a top view of the base plate of this utility model;

[0026] Figure 3 This is a schematic diagram of the base plate and the bent pipe of this utility model.

[0027] Figure 4 This is a schematic diagram of the extrusion rod of this utility model.

[0028] The numbers and letters in the diagram represent the following component names: 10-Base plate; 101-Slide rail; 20-Top plate; 201-Pressure block; 201a-First inclined surface; 30-Positioning assembly; 301-Positioning platform; 302-Positioning baffle; 40-Pressing assembly; 401-Limiting block; 401a-Limiting semi-circular groove; 401b-Guide hole; 402-Extrusion rod; 402a-Rod body; 402b-End; 403-Sliding block; 403a-Second inclined surface; 403b-Second mounting hole; 404-Guide rod; 405-Second spring; 50-Pull-back assembly; 501-Fixing block; 501a-First mounting hole; 502-Abutment block; 503-Pull rod; 504-First spring. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0030] like Figure 1-4 As shown, the present invention proposes a stamping die for punching holes in bent pipes, including a base plate 10 and a top plate 20. The top plate 20 is located directly above the base plate 10 and can move up and down. The base plate 10 is provided with a positioning component 30 and a stamping component 40. The positioning component 30 includes a positioning platform 301 and two positioning baffles 302 spaced apart. The positioning platform 301 is provided with an arc groove 301a, and the distance between the positioning platform 301 and the positioning baffles 302 is less than the length of the bent pipe. The stamping component 40 includes two limiting blocks 401 that can move closer or further apart from each other. A limiting semicircular groove 401a is provided on the end face of the two limiting blocks 401 that are close to each other. A plurality of extrusion rods 402 are also provided in the limiting semicircular groove 401a, and the extrusion rods 402 are horizontal. Two positioning baffles 302 are fixedly mounted on a pad, and the distance between the two positioning baffles 302 is consistent with the diameter of the bend to prevent the bend from rotating. The height of the top surface of the pad corresponds to the lowest point of the arc groove so that the part of the bend that needs to be stamped remains horizontal. Several limiting posts may also be provided on the bottom plate 10 to limit the maximum distance of the descent of the top plate 20.

[0031] like Figure 1-4 As shown, the present invention proposes a stamping die for punching holes in bent pipes. The extrusion rod 402 includes a rod body 402a and an end 402b. One end of the rod body 402a is an arc surface, and the end 402b is fixedly disposed on this end. The rod body 402a and the end 402b are coaxially arranged, and the diameter of the end 402b is smaller than the diameter of the rod body 402a.

[0032] like Figure 1-4 As shown, this utility model proposes a stamping die for punching holes in bent pipes. Two pressure blocks 201 are spaced apart on the top plate 20. Each pressure block 201 has a first inclined surface 201a, and the stamping assembly 40 has a second inclined surface 403a. The first inclined surface 201a and the second inclined surface 403a cooperate with each other. The two pressure blocks 201 are symmetrically arranged; preferably, the inclination angle of the first inclined surface 201a is 45 degrees.

[0033] like Figure 1-4 As shown, this utility model proposes a stamping die for punching holes in bent pipes. The stamping assembly 40 further includes a sliding block 403, which is slidably connected to the base plate 10. The side of the sliding block 403 is connected to the limiting block 401, and a second inclined surface 403a is disposed on the sliding block 403. An extrusion rod 402 is fixedly disposed on the side of the sliding block 403 near the limiting block 401, and the extrusion rod 402 extends out from the limiting semicircular groove 401a after passing through the limiting block 401. Preferably, the inclination angle of the second inclined surface 403a is 45 degrees; there are two sliding blocks 403, each corresponding to one of the two limiting blocks 401, and the two sliding blocks 403 are symmetrical; each sliding block 403 is provided with four extrusion rods 402, and the four extrusion rods 402 are evenly distributed.

[0034] like Figure 1-4 As shown, the present invention discloses a stamping die for punching holes in bent pipes, which further includes a pull-back assembly 50. The pull-back assembly 50 includes a fixing block 501, an abutment block 502, and several pull rods 503. The fixing block 501 is disposed on one side of the base plate 10, and the abutment block 502 is fixedly disposed on the base plate 10. One end of the pull rod 503 passes through the abutment block 502 and is fixedly connected to a sliding block 403. A first mounting hole 501a is provided on the side of the fixing block 501, and the other end of the pull rod 503 is located in the first mounting hole 501a. A first spring 504 is also disposed in the first mounting hole 501a. One end of the first spring 504 contacts the pull rod 503, and the other end contacts the abutment block 502. Preferably, there are two pull-back assemblies 50, each corresponding to one of the two sliding blocks 403; each pull-back assembly 50 includes two pull rods 503.

[0035] like Figure 1-4As shown, this utility model proposes a stamping die for punching holes in bent pipes. The sliding block 403 has several guide rods 404 on its side near the limiting block 401. The limiting block 401 has guide holes 401b, and the guide rods 404 extend into the guide holes 401b. Each sliding block 403 has two guide rods 404; each limiting block 401 has two guide holes 401b.

[0036] like Figure 1-4 As shown, this utility model proposes a stamping die for punching holes in bent pipes. The sliding block 403 has several second mounting holes 403b on its side near the limiting block 401. A second spring 405 is installed within each second mounting hole 403b, with one end of the spring 405 contacting the second mounting hole 403b and the other end maintaining contact with the limiting block 401. The number of second mounting holes 403b is three.

[0037] like Figure 1-4 As shown, the present invention proposes a stamping die for punching holes in bent pipes, wherein a slide rail 101 is provided on the base plate 10, and the slide rail 101 is connected to the sliding block 403.

[0038] The working principle of this utility model is as follows:

[0039] Place one end of the bent pipe on the positioning platform, and position the bent part between the two positioning baffles to achieve positioning;

[0040] The main shaft descends, causing the top plate to descend as well;

[0041] The pressure block then descends and contacts the sliding block, the first inclined surface, and the second inclined surface, causing the sliding block to move;

[0042] The two sliding blocks move closer to each other, pulling the lever and compressing the first spring.

[0043] When the two limiting blocks come together, the limiting semicircular groove covers the bent pipe and achieves the limiting function.

[0044] The sliding block continues to move closer, and the extrusion rod contacts the bend in the tube;

[0045] The end first contacts the bend to punch out the bottom hole, and then the end of the rod contacts the bend to enlarge the bottom hole and punch out the flange.

[0046] As the main shaft rises, the pressure block does not apply pressure to the sliding block;

[0047] Under the action of the first spring, the pull rod pulls the sliding block back to its initial position;

[0048] Remove the stamped bend.

[0049] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A stamping die for punching holes in bent pipes, characterized in that: The device includes a base plate (10) and a top plate (20). The top plate (20) is located directly above the base plate (10) and can move up and down. The base plate (10) is provided with a positioning component (30) and a stamping component (40). The positioning component (30) includes a positioning platform (301) and two positioning baffles (302) spaced apart. The positioning platform (301) is provided with an arc groove (301a), and the distance between the positioning platform (301) and the positioning baffles (302) is less than the length of the bent pipe. The stamping component (40) includes two limiting blocks (401) that can move closer or further apart from each other. A limiting semicircular groove (401a) is provided on one end face of the two limiting blocks (401) that are close to each other. A plurality of extrusion rods (402) are also provided in the limiting semicircular groove (401a). The extrusion rods (402) are horizontal.

2. The stamping die for punching holes in a pipe according to claim 1, characterized in that: The extrusion rod (402) includes a rod body (402a) and an end (402b). One end of the rod body (402a) is an arc surface, and the end (402b) is fixedly disposed on this end. The rod body (402a) and the end (402b) are coaxially disposed, and the diameter of the end (402b) is smaller than the diameter of the rod body (402a).

3. A stamping die for punching holes in a pipe according to claim 2, characterized in that: Two pressure blocks (201) are spaced apart on the top plate (20). The pressure block (201) has a first inclined surface (201a) and the stamping assembly (40) has a second inclined surface (403a). The first inclined surface (201a) and the second inclined surface (403a) cooperate with each other.

4. A stamping die for punching holes in a pipe according to claim 3, characterized in that: The stamping assembly (40) further includes a sliding block (403), which is slidably connected to the base plate (10). The side of the sliding block (403) is connected to the limiting block (401), and the second inclined surface (403a) is disposed on the sliding block (403). The extrusion rod (402) is fixedly disposed on the side of the sliding block (403) near the limiting block (401), and the extrusion rod (402) extends out from the limiting semicircular groove (401a) after passing through the limiting block (401).

5. A stamping die for punching holes in a pipe according to claim 4, characterized in that: It also includes a pull-back assembly (50), which includes a fixing block (501), an abutment block (502) and several pull rods (503). The fixing block (501) is disposed on one side of the base plate (10), the abutment block (502) is fixedly disposed on the base plate (10), one end of the pull rod (503) passes through the abutment block (502) and is fixedly connected to the sliding block (403). The fixing block (501) has a first mounting hole (501a) on its side, and the other end of the pull rod (503) is located in the first mounting hole (501a). A first spring (504) is also disposed in the first mounting hole (501a). One end of the first spring (504) contacts the pull rod (503), and the other end contacts the abutment block (502).

6. A stamping die for punching holes in pipes according to claim 4, characterized in that: The sliding block (403) is provided with a plurality of guide rods (404) on one side near the limiting block (401). The limiting block (401) is provided with a guide hole (401b), and the guide rods (404) extend into the guide hole (401b).

7. A stamping die for punching holes in a pipe according to claim 4, characterized in that: The sliding block (403) is provided with a plurality of second mounting holes (403b) on one side near the limiting block (401). A second spring (405) is provided in the second mounting hole (403b). One end of the second spring (405) is in contact with the second mounting hole (403b), and the other end is in contact with the limiting block (401).

8. A stamping die for punching holes in a pipe according to claim 4, characterized in that: The base plate (10) is provided with a slide rail (101), which is connected to the sliding block (403).

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