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CN-224222473-U - Stamping die for punching bent pipe

CN224222473UCN 224222473 UCN224222473 UCN 224222473UCN-224222473-U

Abstract

The utility model relates to the field of stamping, in particular to a stamping die for punching an elbow, which comprises a bottom plate and a top plate, wherein the top plate is positioned right above the bottom plate and can move up and down, a positioning assembly and a stamping assembly are arranged on the bottom plate, the positioning assembly comprises a positioning table and two positioning baffles which are arranged at intervals, an arc groove is arranged on the positioning table, the distance between the positioning table and the positioning baffles is smaller than the length of the elbow, the stamping assembly comprises two limiting blocks which can be mutually close to or far away from each other, a limiting semicircular groove is arranged on one end surface of each of the two limiting blocks, a plurality of extrusion rods are fixedly arranged in each limiting semicircular groove, and the extrusion rods are horizontal. According to the utility model, the transverse stamping of the bent pipe is realized by arranging the bottom plate, the top plate, the pressing block, the extrusion rod, the limiting block, the first inclined plane and the second inclined plane, so that the position and the coaxiality of holes processed on two sides are good.

Inventors

  • Zhang Lianggen
  • WEI FENG

Assignees

  • 浙江弘旭智能科技有限公司

Dates

Publication Date
20260512
Application Date
20250613

Claims (8)

  1. 1. A stamping die for punching bent pipes is characterized by comprising a bottom plate (10) and a top plate (20), wherein the top plate (20) is positioned right above the bottom plate (10), the top plate (20) can move up and down, a positioning assembly (30) and a stamping assembly (40) are arranged on the bottom plate (10), the positioning assembly (30) comprises a positioning table (301) and two positioning baffles (302) which are arranged at intervals, an arc groove (301 a) is formed in the positioning table (301), the distance between the positioning table (301) and the positioning baffles (302) is smaller than the length of each bent pipe, the stamping assembly (40) comprises two limiting blocks (401) which can be mutually close to or far away from each other, a limiting semicircular groove (401 a) is formed in one end face of each limiting block (401) which is mutually close to each other, a plurality of extrusion rods (402) are further arranged in the limiting semicircular groove (401 a), and the extrusion rods (402) are horizontal.
  2. 2. A stamping die for punching bent pipes as set forth in claim 1, wherein the extrusion rod (402) comprises a rod body (402 a) and a tip (402 b), one end of the rod body (402 a) is an arc surface, the tip (402 b) is fixedly arranged on the end, the rod body (402 a) and the tip (402 b) are coaxially arranged, and the diameter of the tip (402 b) is smaller than that of the rod body (402 a).
  3. 3. A stamping die for bent pipe punching according to claim 2, characterized in that two pressing blocks (201) are arranged on the top plate (20) at intervals, a first inclined surface (201 a) is arranged on the pressing blocks (201), a second inclined surface (403 a) is arranged on the stamping assembly (40), and the first inclined surface (201 a) is matched with the second inclined surface (403 a).
  4. 4. A stamping die for punching bent pipes according to claim 3, wherein the stamping assembly (40) further comprises a sliding block (403), the sliding block (403) is slidably connected with the bottom plate (10), the side surface of the sliding block (403) is connected with the limiting block (401), the second inclined surface (403 a) is arranged on the sliding block (403), the extruding rod (402) is fixedly arranged on one side, close to the limiting block (401), of the sliding block (403), and the extruding rod (402) penetrates through the limiting block (401) and then extends out of the limiting semicircular groove (401 a).
  5. 5. The stamping die for bent pipe punching according to claim 4, further comprising a pull-back assembly (50), wherein the pull-back assembly (50) comprises a fixed block (501), an abutting block (502) and a plurality of pull rods (503), the fixed block (501) is arranged on one side of the bottom plate (10), the abutting block (502) is fixedly arranged on the bottom plate (10), one end of each pull rod (503) penetrates through the abutting block (502) and then is fixedly connected with the corresponding sliding block (403), a first mounting hole (501 a) is formed in the side face of the fixed block (501), the other end of each pull rod (503) is located in the corresponding first mounting hole (501 a), a first spring (504) is further arranged in the corresponding first mounting hole (501 a), and one end of each first spring (504) is in contact with the corresponding pull rod (503), and the other end of each first spring is in contact with the corresponding abutting block (502).
  6. 6. A stamping die for elbow punching as described in claim 4, wherein a plurality of guide rods (404) are further arranged on one side surface of the sliding block (403) close to the limiting block (401), a guide hole (401 b) is arranged on the limiting block (401), and the guide rods (404) extend into the guide hole (401 b).
  7. 7. A stamping die for punching bent pipes as set forth in claim 4, wherein a plurality of second mounting holes (403 b) are further formed in a side surface, close to the limiting block (401), of the sliding block (403), a second spring (405) is arranged in each second mounting hole (403 b), one end of each second spring (405) is in contact with the corresponding second mounting hole (403 b), and the other end of each second spring is in contact with the corresponding limiting block (401).
  8. 8. A stamping die for bent pipe punching as claimed in claim 4, wherein a sliding rail (101) is arranged on the bottom plate (10), and the sliding rail (101) is connected with the sliding block (403) in a matching manner.

Description

Stamping die for punching bent pipe Technical Field The utility model relates to the field of stamping, in particular to a stamping die for punching an elbow. Background The existing part needs to bend the pipe-shaped part before punching the bent pipe. For the parts, the existing processing method is to bend by a pipe bending machine, and then drill holes by a drilling machine or mill holes by a milling machine. However, the holes obtained by drilling or milling the holes can generate burrs on the inner side of the tubular part, the deburring operation is required, the drilling or milling cannot directly obtain inward flanging, the additional punching is required, and the bent pipe needs to be turned over for secondary processing, so that the position degree of the processed holes is not good enough. Therefore, there is a need for an improvement in such a structure to overcome the above-mentioned drawbacks. Disclosure of utility model The utility model aims to overcome the defects of the prior art, and provides a stamping die for punching an elbow, which is realized by the following technical scheme: A stamping die for return bend punches a hole, includes bottom plate and roof, the roof is located directly over the bottom plate, just the roof can reciprocate, be provided with locating component and punching press subassembly on the bottom plate, locating component includes locating bench and two locating baffles that the interval set up, be provided with the circular arc groove on the locating bench, just locating bench with interval between the locating baffles is less than the length of return bend, punching press subassembly includes two stoppers that can be close to each other or keep away from, two be provided with spacing semicircle groove on the terminal surface that the stopper is close to each other, still be provided with a plurality of squeeze bars in the spacing semicircle groove, the squeeze bar is the level. The technical scheme includes that the bottom plate is used for arranging the positioning assembly and the stamping assembly, the top plate is used for being connected with the stamping main shaft and driving the stamping assembly to stamp, the positioning table is used for arranging the arc groove which is used for positioning the end part of the bent pipe, the two positioning baffles which are arranged at intervals are used for positioning the bent part of the bent pipe, the limiting block is used for clamping the bent pipe in the middle after the bent pipe is close to the limiting block to achieve limiting, and the extrusion rod is used for stamping the bent pipe to achieve punching and flanging one-step forming. The extrusion rod is further arranged in such a way that the extrusion rod comprises a rod body and a tip, one end of the rod body is an arc surface, the tip is fixedly arranged on the end, the rod body and the tip are coaxially arranged, and the diameter of the tip is smaller than that of the rod body. According to the technical scheme, the rod body and the end head are arranged, so that when the extrusion rod is contacted with the bent pipe, the end head is contacted with the bent pipe firstly, and therefore larger pressure is applied through smaller contact area, small holes are punched, then the end part of the rod body is contacted with the bent pipe, the small holes are reamed through arcs, and flanging is punched. The utility model is further characterized in that two pressing blocks are arranged on the top plate at intervals, a first inclined plane is arranged on the pressing blocks, a second inclined plane is arranged on the punching component, and the first inclined plane is matched with the second inclined plane. According to the technical scheme, the pressing block is used for being in contact with the stamping assembly, so that the first inclined surface is in contact with the second inclined surface, and vertical movement of the pressing block is converted into horizontal movement of the sliding block of the stamping assembly. The stamping assembly is further provided with a sliding block, the sliding block is connected with the bottom plate in a sliding mode, the side face of the sliding block is connected with the limiting block, the second inclined face is arranged on the sliding block, the extrusion rod is fixedly arranged on one side, close to the limiting block, of the sliding block, and the extrusion rod penetrates through the limiting block and then extends out of the limiting semicircular groove. According to the technical scheme, the sliding block is used for transmitting power, the power from the pressing block is converted into horizontal movement and transmitted to the limiting block, so that the extrusion rod is in contact with the bent pipe, and stamping is achieved. The utility model further provides a pull-back assembly, which comprises a fixed block, an abutting block and a plurality of pull rods, wherein the fixed block is arranged on one side