Punching structure

Abstract

The utility model relates to the technical field of stamping dies, and discloses a punching structure which is characterized in that a shaping step is added at the rear part of a forming station, a hole site is shaped from the lower part by utilizing a shaping support pillar after the hole site forming is finished, the process is coherent, and after the shaping step, the bottom size of a hole is basically consistent with the upper size of the hole. In order to prevent the reshaping support pillar from hindering the displacement action of the workpiece, the reshaping support pillar is arranged in a retraction type structure, the reshaping support pillar and the driving sliding pillar are installed in a meshed mode through a transmission gear, and in the mold opening state, the driving sliding pillar is pushed by a reset spring to move upwards so that the reshaping support pillar can be in the retraction state. During mold closing machining, the driving sliding column is pressed downwards by the driving pressing column to move downwards, the shaping jacking column moves upwards for jacking through meshing transmission of the transmission gear, shaping machining of a hole in the upper portion of a workpiece is completed in cooperation with pressing limiting of the limiting pressing plate, and the shaping jacking column can achieve automatic jacking and retracting actions in the machining process.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping processing dies, in particular to a punching structure. Background Art

[0002] Stamping dies are commonly used processing devices for metal workpieces. When processing metal parts, in order to facilitate the assembly and installation of metal parts, it is often necessary to punch holes in the side plate structure of the metal parts. Processing and forming the installation holes through die stamping is one of the important processes in the processing of metal parts.

[0003] The normal stamping process is: convex bulge → punching → forming. For products formed by normal stamping, the lower size of the circular hole of the product will be smaller (shrinking inward) due to the upper stamping. The processed hole will be larger at the top and smaller at the bottom. When assembling, the customer uses a torque wrench to tighten the self-tapping bolt. During installation, the self-tapping bolt enters from the top of the hole. Since the bottom of the hole is small, the torque for tightening the self-tapping screw will exceed the customer's allowable value, and the assembly will eventually fail. For this reason, a punching structure is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a punching structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a punching structure, comprising a punching mechanism and a shaping mechanism, the punching mechanism is used for punching a workpiece, the punching mechanism comprises a convex assembly, a punching assembly and a forming assembly, the convex assembly, the punching assembly and the forming assembly are arranged in parallel, and the punching mechanism and the shaping mechanism are arranged in parallel;

[0006] The shaping mechanism is arranged at the rear part of the workstation of the punching mechanism, and is used for shaping processing of the upper opening of the workpiece. The shaping mechanism includes a shaping upper die seat, a shaping lower die seat, a driving slide column, a shaping top column and a transmission gear. The transmission gear is fixedly rotatably installed inside the shaping lower die seat, and the driving slide column and the shaping top column are respectively meshed and installed on both sides of the transmission gear. A driving pressure column and a limiting pressure plate are arranged at the lower part of the shaping upper die seat, and the driving pressure column is located directly above the driving slide column, and a return spring is arranged at the lower part of the driving slide column.

[0007] Preferably, the above-mentioned bulge assembly is used for the bulge processing of the workpiece, and the bulge assembly includes a bulge processing seat and a bulge processing column, and the bulge processing seat and the bulge processing column are respectively installed on the upper and lower sides of the mold, and the bulge processing column is installed in alignment with the bulge processing groove set on the upper part of the bulge processing seat.

[0008] Preferably, the punching assembly is used for punching processing of a workpiece, and the punching assembly comprises a punching processing seat and a punching processing column, the punching processing seat and the punching processing column are respectively installed on the upper and lower sides of the mold, and the punching processing column is installed in alignment with the punching processing groove arranged on the upper part of the punching processing seat.

[0009] Preferably, the above-mentioned molding component is used for the molding process of opening a hole on the upper part of the workpiece, and the molding component includes a molding processing seat and a molding processing column, and the molding processing seat and the molding processing column are respectively installed on the upper and lower sides of the mold, and the molding processing column is installed in alignment with the molding processing groove set on the upper part of the molding processing seat.

[0010] Preferably, the above-mentioned shaping upper die seat and shaping lower die seat are respectively installed on the upper and lower sides of the mold, and a slide column mounting hole and a top column mounting hole are penetrated through the middle of the shaping lower die seat. The driving slide column and the shaping top column are respectively slidably fitted on the inner sides of the slide column mounting hole and the top column mounting hole, and the return spring is installed in contact with the lower part of the driving slide column.

[0011] Preferably, a gear mounting groove is provided in the middle of the above-mentioned shaping lower die seat, a supporting shaft column is installed on the side of the gear mounting groove, the transmission gear is rotatably installed on the upper part of the supporting shaft column, and driving scale seats are provided on the sides of the driving slide column and the shaping top column. The driving slide column and the shaping top column are respectively meshed and installed on both sides of the transmission gear in an up and down staggered manner through the driving scale seats, and a closed plug block is installed in the gear mounting groove, and a shaft column socket is provided at the end of the closed plug block, and the end of the supporting shaft column is plug-supported and installed on the inner side of the shaft column socket.

[0012] Preferably, the driving pressure column is fixedly installed at the lower part of the shaping upper die seat. When the die is closed, the bottom end of the driving pressure column is in contact with the upper end of the driving sliding column. The four upper corners of the limiting pressure plate are fixedly installed with mounting guide columns. The mounting guide columns are movably installed through the inner side of the sliding hole set in the middle part of the shaping upper die seat. The lower part of the mounting guide column is provided with a thrust spring. The thrust spring is in contact with and installed between the shaping upper die seat and the limiting pressure plate. The upper part of the mounting guide column is provided with a limiting nut.

[0013] Compared with the prior art, the utility model adopts the above technical solution and has the following technical effects:

[0014] This punching structure adds a sizing step at the rear of the forming station, and a sizing mechanism is arranged at the rear of the forming processing seat. The sizing mechanism is installed side by side at the rear of the punching mechanism. After the hole forming processing is completed, the sizing ejector pin is used to perform sizing processing on the hole from the lower part. The process is coherent. After the sizing step, the bottom size of the opening is basically the same as the upper size, ensuring the accuracy and dimensional stability of the size, and avoiding assembly failures caused by aperture deviations. The sizing ejector pin is installed at the lower part of the mold. In order to prevent the sizing ejector pin from interfering with the workpiece shifting action, the sizing ejector pin is arranged in a retractable structure. The sizing ejector pin and the driving slide column are installed through the meshing of transmission gears. When the mold is in the open state, the driving slide column is pushed by the return spring to move upward, making the sizing ejector pin in the retracted state and not hindering the workpiece shifting. When the mold is closed for processing, the driving slide column is pressed downward by the driving pressure column and moves downward. Through the meshing transmission of the transmission gears, the sizing ejector pin moves upward for jacking, and the sizing processing of the upper hole of the workpiece is completed in cooperation with the downward limit of the limit pressing plate. During the processing, the sizing ejector pin can realize automatic jacking and retraction actions, with a simple structure and no additional driving structure. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the overall process distribution structure of the present utility model;

[0017] Figure 2 It is a schematic diagram of the overall upper side structure of the sizing mechanism of the present utility model;

[0018] Figure 3 It is a schematic diagram of the overall lower side structure of the sizing mechanism of the present utility model;

[0019] Figure 4 It is a schematic diagram of the middle cross-sectional structure of the sizing lower mold base of the present utility model;

[0020] Figure 5 It is a schematic diagram of the installation structure of the driving slide column and the sizing ejector pin of the present utility model;

[0021] Figure 6 It is a three-dimensional structure schematic diagram of the closed insert block of the present utility model;

[0022] Figure 7 It is a schematic diagram of the side cross-section of the workpiece processing of the present utility model.

[0023] Explanation of the reference numerals in the accompanying drawings: 1. convex hump processing seat; 2. convex hump processing column; 3. punching processing seat; 4. punching processing column; 5. forming processing seat; 6. forming processing column; 7. shaping upper die seat; 8. shaping lower die seat; 9. driving slide column; 10. shaping top column; 11. transmission gear; 12. driving pressure column; 13. limiting pressure plate; 14. driving ruler seat; 15. reset spring; 16. mounting guide column; 17. closing plug block; 18. shaft column socket. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0026] Example

[0027] See also Figure 1-7 The utility model provides a technical solution: a punching structure, including a punching mechanism and a shaping mechanism, the punching mechanism is used for punching processing of a workpiece, the punching mechanism includes a convex hull component, a punching component and a forming component, and the convex hull component, the punching component and the forming component are arranged in sequence in a side-by-side manner.

[0028] As attached Figure 1 As shown, the bulge assembly is arranged at the frontmost workstation, and the bulge assembly is used for the bulge processing of the workpiece. The bulge assembly includes a bulge processing seat 1 and a bulge processing column 2. The bulge processing seat 1 and the bulge processing column 2 are respectively installed on the upper and lower sides of the mold. The bulge processing column 2 is installed in alignment with the bulge processing groove set on the upper part of the bulge processing seat 1, and the stamping and forming processing of the bulge on the upper part of the workpiece is completed by closed mold stamping.

[0029] As attached Figure 1As shown, the punching assembly is arranged at the rear station of the convex assembly, and the punching assembly is used for the punching process of the workpiece. The punching assembly includes a punching processing seat 3 and a punching processing column 4. The punching processing seat 3 and the punching processing column 4 are respectively installed on the upper and lower sides of the mold. The punching processing column 4 is installed in alignment with the punching processing groove arranged on the upper part of the punching processing seat 3, and the punching processing at the upper convex part of the workpiece is completed by closed mold stamping.

[0030] As attached Figure 1 As shown, the forming component is arranged at the rear station of the punching component. The forming component is used for the forming process of the upper opening of the workpiece. The forming component includes a forming processing seat 5 and a forming processing column 6. The forming processing seat 5 and the forming processing column 6 are respectively installed on the upper and lower sides of the mold. The forming processing column 6 is installed in alignment with the forming processing groove arranged on the upper part of the forming processing seat 5, and the hole expansion forming process at the upper opening of the workpiece is completed by closed mold stamping.

[0031] As attached Figure 1 As shown, the shaping mechanism is arranged at the rear of the punching mechanism, the punching mechanism and the shaping mechanism are arranged side by side, and the shaping mechanism is installed side by side at the rear of the punching mechanism. After the hole forming process is completed, the shaping top column 10 is used to shape the hole from the bottom, and the process is continuous. The shaping mechanism is used for shaping the upper hole of the workpiece. The shaping mechanism includes a shaping upper die seat 7, a shaping lower die seat 8, a driving slide column 9, a shaping top column 10 and a transmission gear 11, as shown in the attached Figure 4 As shown, the shaping upper die seat 7 and the shaping lower die seat 8 are respectively installed on the upper and lower sides of the mold. In order to facilitate the connection and installation of the driving slide column 9 and the shaping top column 10, a slide column mounting hole and a top column mounting hole are penetrated in the middle of the shaping lower die seat 8. The driving slide column 9 and the shaping top column 10 are respectively slidably fitted on the inner sides of the slide column mounting hole and the top column mounting hole. In order to provide a reset driving force for the driving slide column 9, a reset spring 15 is arranged at the lower part of the driving slide column 9. The reset spring 15 is a steel spring with a high elastic driving force. The reset spring 15 is installed in contact with the lower part of the driving slide column 9, and can provide sufficient elastic driving force for the reset of the driving slide column 9.

[0032] In order to facilitate the connection and installation of the transmission gear 11, as shown in the attached Figure 4 As shown, a gear installation groove cavity is provided in the middle of the shaping lower die seat 8. In order to facilitate the rotational installation support of the transmission gear 11, a support shaft column is installed on the side of the gear installation groove cavity. The transmission gear 11 is rotatably installed on the upper part of the support shaft column. In order to connect and transmit with the transmission gear 11, as shown in the attached Figure 5As shown in the figure, driving scale seats 14 are arranged on the sides of the driving slide pillar 9 and the shaping top pillar 10. The driving slide pillar 9 and the shaping top pillar 10 are respectively meshed and installed on both sides of the transmission gear 11 in a vertically staggered manner through the driving scale seats 14. The shaping top pillar 10 and the driving slide pillar 9 are meshed and installed through the transmission gear 11. In the open mold state, driven by the return spring 15, the driving slide pillar 9 moves upward, causing the shaping top pillar 10 to be in a retracted state, which will not hinder the displacement of the workpiece. During the closed mold processing, the driving slide pillar 9 is pressed downward by the driving pressure pillar 12 and moves downward. Through the meshing transmission of the transmission gear 11, the shaping top pillar 10 moves upward for jacking, and in cooperation with the downward pressing and limiting of the limiting pressing plate 13, the shaping processing of the upper hole of the workpiece is completed. During the processing, the shaping top pillar 10 can realize automatic jacking and retracting actions. In order to perform a closed installation on the gear installation cavity, a closed insert block 17 is fitted and inserted inside the gear installation cavity, as shown in the appendix Figure 6 As shown in the figure, in order to stably support the support shaft column, a shaft column insertion hole 18 is provided at the end of the closed insert block 17. The end of the support shaft column is inserted and supported inside the shaft column insertion hole 18.

[0033] In order to drive the upward movement of the shaping top pillar 10 and provide support for the workpiece, as shown in the appendix Figure 2 As shown in the figure, a driving pressure pillar 12 and a limiting pressing plate 13 are arranged at the lower part of the shaping upper die base 7. The driving pressure pillar 12 is fixedly installed at the lower part of the shaping upper die base 7. The driving pressure pillar 12 is located directly above the driving slide pillar 9. When the mold is closed, the bottom end of the driving pressure pillar 12 abuts and fits with the upper end of the driving slide pillar 9. By pressing down the driving pressure pillar 12, a driving force can be provided for the upward movement of the shaping top pillar 10. Through the upward movement of the shaping top pillar 10 to expand the hole, the shaping processing of the lower part of the opening is completed, as shown in the appendix Figure 7 As shown in the figure, after the shaping process step, the bottom size of the opening is basically the same as the upper size, ensuring the accuracy of the size and the size stability, and avoiding assembly failure caused by aperture deviation.

[0034] The limiting pressing plate 13 is used for downward pressing and limiting of the upper part of the workpiece. In order to facilitate the sliding and guiding of the limiting pressing plate 13, as shown in the appendix Figure 4 As shown in the figure, mounting guide columns 16 are fixedly installed at the four corners of the upper part of the limiting pressing plate 13. The mounting guide columns 16 are movably inserted through the inside of the sliding holes provided in the middle of the shaping upper die base 7. In order to apply an elastic pushing force to the limiting pressing plate 13, a thrust spring is sleeved on the lower part of the mounting guide column 16. The thrust spring abuts and is installed between the shaping upper die base 7 and the limiting pressing plate 13. In order to provide a pressing support for the limiting pressing plate 13 when it is closed, a circular support is provided at the upper part of the limiting pressing plate 13. In order to resist and limit the sliding of the mounting guide column 16, a limiting nut is installed at the upper part of the mounting guide column 16.

[0035] Working principle or structural principle, during processing, the workpiece is positioned and placed on the upper part of the stamping processing table of the device. When initially placed, the workpiece is on the upper part of the convex processing seat 1, and then the mold is driven by the press to perform overall stamping, and the convex processing column 2 and the punching processing seat 3 cooperate to complete the convex processing of the workpiece, and then the mold moves up to move the workpiece forward one station, and then the mold is closed through the punching processing seat 3 and the punching processing column 4 to complete the punching processing at the convex, and at the same time, the convex processing column 2 and the punching processing seat 3 cooperate to complete the convex processing of the rear part of the workpiece, so that the convexing, punching and forming of the workpiece are completed reciprocatingly, and the workpiece is moved back one station after the forming process, and when the mold is closed, the shaping upper die seat 7 is driven by the press to move downward, and during the downward movement, the limit pressure at the bottom of the shaping upper die seat 7 The plate 13 first contacts the workpiece to press down and limit the upper part of the hole of the workpiece, and then the mold continues to move downward, and the driving pressure column 12 contacts and presses down on the upper part of the driving slide column 9. Under the downward pressure, the slide column 9 moves downward, and at the same time, the driving ruler seat 14 drives the transmission gear 11 to rotate on a fixed axis. Driven by the transmission gear 11, the shaping top column 10 moves upward, and the shaping processing of the workpiece hole is completed by the lifting and expansion of the shaping head on the upper part of the shaping top column 10. Then the mold moves upward, and the driving slide column 9 loses the resistance of the driving pressure column 12. Move up and reset under the push of the reset spring 15, and the shaping top column 10 moves down and retracts and resets under the upward drive of the driving pressure column 12. After moving downward, the shaping top column 10 retracts and is hidden inside the shaping lower die seat 8, and will not hinder the shifting operation of the workpiece. Then the workpiece is shifted and the next round of stamping processing is carried out.

[0036] In summary, the punching structure adds a shaping step at the rear of the forming station, and a shaping mechanism is set at the rear of the forming processing seat 5. The shaping mechanism is installed in a side-by-side manner at the rear of the punching mechanism. After the hole forming process is completed, the shaping top column 10 is used to shape the hole from the bottom. The process is continuous. After the shaping step, the bottom size of the opening is basically consistent with the upper size, ensuring the accuracy and stability of the size, and avoiding assembly failure caused by aperture deviation. The shaping top column 10 is installed at the bottom of the mold. In order to avoid the shaping top column 10 hindering the displacement of the workpiece, the shaping top column 10 is retracted. According to the structural setting, the shaping top column 10 and the driving slide column 9 are meshed and installed through the transmission gear 11. When the mold is in the open state, the driving slide column 9 is pushed upward by the reset spring 15 to make the shaping top column 10 in the retracted state, which will not hinder the displacement of the workpiece. During the closed mold processing, the driving slide column 9 is pressed down by the driving pressure column 12, and the shaping top column 10 is moved up and lifted through the meshing transmission of the transmission gear 11, and the shaping processing of the upper hole of the workpiece is completed by the downward pressure and limit of the limit pressure plate 13. During the processing, the shaping top column 10 can realize automatic lifting and retraction actions. The structure is simple and no additional driving structure is required.

[0037] Those skilled in the art can understand that the features recited in the various embodiments and / or claims of the present utility model can be combined or / and combined in various ways, even if such combinations or combinations are not explicitly recited in the present utility model. In particular, without departing from the spirit and teachings of the present utility model, the features recited in the various embodiments and / or claims of the present utility model can be combined and / and combined in various ways. All such combinations and / and combinations fall within the scope of the present utility model.

Claims

1. A punching structure, comprising a punching mechanism and a shaping mechanism, characterized in that: The punching mechanism is used for punching of workpieces, and comprises a convex assembly, a punching assembly and a forming assembly, wherein the convex assembly, the punching assembly and the forming assembly are arranged in parallel, and the punching mechanism and the shaping mechanism are arranged in parallel; The shaping mechanism is arranged at the rear part of the workstation of the punching mechanism, and is used for shaping processing of the upper opening of the workpiece. The shaping mechanism comprises a shaping upper die seat (7), a shaping lower die seat (8), a driving slide column (9), a shaping top column (10) and a transmission gear (11). The transmission gear (11) is fixedly rotatably installed inside the shaping lower die seat (8). The driving slide column (9) and the shaping top column (10) are respectively meshed and installed on both sides of the transmission gear (11). A driving pressure column (12) and a limiting pressure plate (13) are arranged at the lower part of the shaping upper die seat (7). The driving pressure column (12) is located directly above the driving slide column (9), and a return spring (15) is arranged at the lower part of the driving slide column (9).

2. A punching structure according to claim 1, characterized in that: The convex assembly is used for convex processing of a workpiece, and comprises a convex processing seat (1) and a convex processing column (2). The convex processing seat (1) and the convex processing column (2) are respectively installed on the upper and lower sides of the mold, and the convex processing column (2) is installed in alignment with the convex processing groove provided on the upper part of the convex processing seat (1).

3. A punching structure according to claim 2, characterized in that: The punching assembly is used for punching processing of a workpiece, and comprises a punching processing seat (3) and a punching processing column (4). The punching processing seat (3) and the punching processing column (4) are respectively installed on the upper and lower sides of the mold, and the punching processing column (4) is installed in alignment with the punching processing groove arranged on the upper part of the punching processing seat (3).

4. A punching structure according to claim 3, characterized in that: The molding assembly is used for the molding process of opening a hole on the upper part of a workpiece, and comprises a molding processing seat (5) and a molding processing column (6). The molding processing seat (5) and the molding processing column (6) are respectively installed on the upper and lower sides of the mold, and the molding processing column (6) is installed in alignment with the molding processing groove arranged on the upper part of the molding processing seat (5).

5. A punching structure according to claim 1, characterized in that: The shaping upper die seat (7) and the shaping lower die seat (8) are respectively installed on the upper and lower sides of the mold, and a slide column mounting hole and a top column mounting hole are provided through the middle of the shaping lower die seat (8). The driving slide column (9) and the shaping top column (10) are respectively slidably fitted on the inner sides of the slide column mounting hole and the top column mounting hole, and the return spring (15) is installed in contact with the lower part of the driving slide column (9).

6. A punching structure according to claim 5, characterized in that: A gear mounting groove cavity is provided in the middle of the shaping lower die seat (8), a supporting shaft column is installed on the side of the gear mounting groove cavity, the transmission gear (11) is rotatably installed on the upper part of the supporting shaft column, the sides of the driving slide column (9) and the shaping top column (10) are provided with driving ruler seats (14), the driving slide column (9) and the shaping top column (10) are respectively meshed and installed on both sides of the transmission gear (11) in an up and down staggered manner through the driving ruler seats (14), the inside of the gear mounting groove cavity is embedded and plugged with a closed plug block (17), the end of the closed plug block (17) is provided with a shaft column socket (18), and the end of the supporting shaft column is plug-supported and installed on the inner side of the shaft column socket (18).

7. A punching structure according to claim 6, characterized in that: The driving pressure column (12) is fixedly installed on the lower part of the shaping upper die seat (7). When the die is closed, the bottom end of the driving pressure column (12) is in contact with the upper end of the driving sliding column (9). The upper four corners of the limiting pressure plate (13) are fixedly installed with mounting guide columns (16). The mounting guide column (16) is movably installed through the inner side of the sliding hole set in the middle part of the shaping upper die seat (7). The lower part of the mounting guide column (16) is provided with a thrust spring. The thrust spring is installed in contact between the shaping upper die seat (7) and the limiting pressure plate (13). The upper part of the mounting guide column (16) is installed with a limiting nut.

Images