A watch back cover side punching and rotary cutting die

Abstract

This utility model discloses a side-punching and rotary-cutting mold for watch back covers, including an upper mold base, an upper pad, an upper clamping plate, a stripper plate, a lower mold base, a lower pad, and a lower template. The upper pad is connected to the bottom of the upper mold base, the upper clamping plate is located below the upper pad, the stripper plate is connected to the bottom of the upper clamping plate, the lower template is installed on the top of the lower pad, and the lower pad is installed on the top of the lower mold base. The lower template and the lower pad have four vertically penetrating inner guide sleeves, which are located directly below four inner guide posts, and the four inner guide posts can be fitted vertically with the four inner guide sleeves. From left to right, the bottom of the upper template is equipped with a forming punch assembly, a vertical side punch punch, a side punch inclined pressure plate, and a rotary-cutting punch. From left to right, the bottom of the lower mold base is equipped with a forming bottom mold assembly, a vertical side punch bottom mold, a horizontal side punch punch assembly, and a rotary-cutting bottom mold. This utility model can effectively improve production efficiency and increase the product qualification rate.

Description

Technical Field

[0001] This utility model relates to stamping dies, and more particularly to a side punching and rotary cutting die for a watch back cover. Background Technology

[0002] Watch casebacks are typically round, with a rim around the outside and a notch on the side rim. This notch facilitates installation with the front cover and allows the watch's adjustment wheel to pass through. Currently, watch casebacks are usually die-stamped. After the watch cup is formed as a whole, the side notch is cut manually or repositioned and punched using a separate machine. This processing method is extremely inefficient, and the secondary positioning often results in inconsistent notch positions on the processed watch casebacks, leading to product inconsistencies, significant installation errors, and failure to meet processing requirements. Utility Model Content

[0003] This utility model provides a watch back cover side punching and rotary cutting die, the main purpose of which is to solve the problems of long disassembly time and low disassembly efficiency of existing stamping dies.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A watch back cover side punching and rotary cutting die includes an upper die base, an upper pad, an upper clamping plate, a stripper plate, a lower die base, a lower pad, and a lower template. The upper pad is connected to the bottom of the upper die base. The upper clamping plate is located below the upper pad. The stripper plate is connected to the bottom of the upper clamping plate. The bottom of the upper pad has four inner guide pillars. The bottom ends of the four inner guide pillars pass through the upper clamping plate and the stripper plate respectively and extend beyond the bottom surface of the stripper plate. The upper clamping plate and the stripper plate are movably sleeved on the four inner guide pillars. The lower template is installed on the top of the lower pad. The lower pad is installed on the top of the lower die base. The lower template and the lower pad have four vertically penetrating joints. The inner guide sleeves are located directly below the four inner guide posts, and the four inner guide posts can be fitted with the four inner guide sleeves vertically. The bottom of the upper pad 2 is equipped with a forming punch assembly, a vertical side punch, a side punch inclined pressure plate, and a rotary cutting punch in sequence from left to right. The bottom of the lower die base is equipped with a forming bottom die assembly, a vertical side punch bottom die, a horizontal side punch punch assembly, and a rotary cutting bottom die in sequence from left to right. The bottoms of the forming punch assembly, the vertical side punch, the side punch inclined pressure plate, and the rotary cutting punch can all pass through the upper clamping plate and the stripper plate in sequence and then cooperate with the corresponding forming die base assembly, the vertical side punch bottom die, the horizontal side punch punch assembly, and the rotary cutting bottom die, respectively.

[0006] The vertical side punch head is arc-shaped, and the middle part of the vertical side punch bottom die is cylindrical protrusion, with an arc-shaped groove on its front side that is adapted to the vertical side punch head.

[0007] The horizontal side punch assembly includes a transverse inclined block, a horizontal punch, a positioning bottom die, and a side punch guide die. The transverse inclined block is mounted on the lower template and can move back and forth. The bottom of the side punch inclined plate is inclined downwards and backwards. The top of the transverse inclined block is provided with a driving inclined groove that is inclined downwards and backwards. The bottom of the side punch inclined plate can abut against the driving inclined groove downwards. The bottoms of the positioning bottom die and the side punch guide die are both mounted on the lower template. The positioning bottom die is located between the transverse inclined block and the side punch guide die. There are gaps between the transverse inclined block, the side punch guide die, and the positioning bottom die. The upper part of the side punch guide die is provided with a cutting port. The rear end of the horizontal punch is connected to the front side of the transverse inclined block. The front end of the horizontal punch can penetrate the top of the positioning bottom die and enter the cutting port of the side punch guide die.

[0008] The lower middle part of the side punching inclined pressure plate protrudes downward to form a protrusion. The protrusion is inclined to the rear side downward. The middle part of the driving inclined groove is provided with a sinking inclined groove. The top of the sinking inclined groove is inclined to the rear side downward. The protrusion can abut against the sinking inclined groove.

[0009] Both the bottom of the side-punching inclined pressure plate and the bottom of the protrusion are provided with arc-shaped parts.

[0010] The lower mold base is provided with four outer guide pillars on its upper part, and the upper mold base is provided with four outer guide sleeves that correspond to the outer guide pillars.

[0011] As can be seen from the above description of the structure of this utility model, compared with the prior art, this utility model has the following advantages: This utility model can form watch back covers by setting a forming punch assembly and a forming bottom die assembly. Simultaneously, setting a vertical side punch and a vertical side punch bottom die can perform an initial side cut on the formed watch cup cover. Then, by setting a side punch inclined pressure plate and a horizontal side punch punch assembly, the side cut of the watch back cover can be completed. This allows a single continuous die to simultaneously perform forming and side cutting functions, effectively improving production efficiency and product qualification rate, and well meeting production needs. Attached Figure Description

[0012] Figure 1 This is a three-dimensional schematic diagram of the present invention after mold separation.

[0013] Figure 2 for Figure 1 A magnified view of point A in the middle.

[0014] Figure 3 This is a three-dimensional schematic diagram of the present invention after mold assembly.

[0015] Figure 4 This is a three-dimensional schematic diagram of the vertical side punch head of this utility model.

[0016] Figure 5This is a three-dimensional schematic diagram of the vertical side punch bottom mold of this utility model.

[0017] Figure 6 This is a three-dimensional schematic diagram of the side-punching inclined pressure plate of this utility model.

[0018] Figure 7 This is a three-dimensional schematic diagram of the side horizontal punch assembly of this utility model.

[0019] Figure 8 This is a three-dimensional schematic diagram of the stamping strip of this utility model. Detailed Implementation

[0020] Reference Figures 1 to 8 A watch back cover side punching and rotary cutting die includes an upper die base 1, an upper pad 2, an upper clamping plate 3, a stripper plate 4, a lower die base 5, a lower pad 6, and a lower template 7. The upper pad 2 is connected to the bottom of the upper die base 1, the upper clamping plate 3 is located below the upper pad 2, and the stripper plate 4 is connected to the bottom of the upper clamping plate 3. The bottom of the upper pad 2 has four inner guide pillars 8, the bottom ends of which pass through the upper clamping plate 3 and the stripper plate 4 respectively and extend below the bottom surface of the stripper plate 4. The upper clamping plate 3 and the stripper plate 4 are movably fitted onto the four inner guide pillars 8. The lower template 7 is installed on the top of the lower pad 6, and the lower pad 6 is installed on the top of the lower die base 5. The lower template 7 and the lower pad 6 have four vertically penetrating inner guide sleeves 9, which are located directly below the four inner guide pillars 8, and the four inner guide pillars 8 can be fitted vertically with the four inner guide sleeves 9. The bottom of the upper pad 2 is sequentially equipped with a forming punch assembly 10, a vertical side punch 11, a side punch inclined pressure plate 12, and a rotary cutting punch 13 from left to right. The bottom of the lower die base 5 is sequentially equipped with a forming bottom die assembly 14, a vertical side punch bottom die 15, a horizontal side punch punch assembly 16, and a rotary cutting bottom die 17 from left to right. The bottoms of the forming punch assembly 10, the vertical side punch 11, the side punch inclined pressure plate 12, and the rotary cutting punch 13 can all pass through the upper clamping plate 3 and the stripper plate 4 in sequence and then cooperate with the corresponding forming die base assembly, the vertical side punch bottom die 15, the horizontal side punch punch assembly 16, and the rotary cutting bottom die 17, respectively.

[0021] Reference Figures 1 to 8The upper die holder 1 and lower die holder 5 can be installed on an external hydraulic press. The upper pad 2 and lower pad 6 are used for installation and support. The upper clamping plate 3 is used to connect the stripper plate 4 for punching and stripping. The lower template 7 is used to install and fix the forming bottom die assembly 14, the vertical side punch bottom die 15, the horizontal side punch head assembly 16, and the rotary cutting bottom die 17, etc. The four inner guide pillars 8 cooperate with the inner guide sleeves 9 to provide positioning and springback. The forming punch assembly 10 includes a cutting punch, a first forming punch, a second forming punch, and a third forming punch. The forming bottom die assembly 14 includes a cutting bottom die, a first forming bottom die, a second forming bottom die, and a third forming bottom die, which can realize the punching and forming functions. The vertical side punch head 11 and the vertical side punch bottom die 15 can make the initial side opening of the strip, and the side punch inclined pressure plate 12 on the horizontal side punch head assembly 16 can make the side punch opening of the strip. The rotary cutting punch 13 and the rotary cutting die 17 ensure that the finished watch back cover is cut off from the strip and dropped into the material. At the same time, the rotary cutting ensures that the cut opening of the round watch back cover is smoother and burr-free.

[0022] Reference Figure 4 and Figure 5 The vertical side punch 11 is arc-shaped, and the vertical side punch bottom die 15 has a cylindrical protrusion in the middle, with an arc-shaped groove on its front side that matches the vertical side punch 11. This design allows for pre-punching of the side of the watch back cover material strip after the front section is formed, achieving a punching on the side of the watch back cover material strip, which is better for the next step of side punching.

[0023] Reference Figure 1 , Figure 6 and Figure 7 The horizontal side punch assembly 16 includes a transverse inclined block 161, a horizontal punch 162, a positioning bottom die 163, and a side punch guide die 164. The transverse inclined block 161 is movably mounted on the lower template 7, and the bottom of the side punch inclined pressure plate 12 is inclined downwards and to the rear. The top of the transverse inclined block 161 is provided with a driving inclined groove 18 that is inclined downwards and to the rear, and the bottom front side of the side punch inclined pressure plate 12 can abut downwards against the front side of the driving inclined groove 18. The bottoms of the positioning bottom die 163 and the side punch guide die 164 are both mounted on the lower template 7, and the positioning bottom die 163 is located between the transverse inclined block 161 and the side punch guide die 164. There is a gap between the transverse inclined block 161 and the side punching die 164 and the positioning bottom die 163. The upper part of the side punching die 164 is provided with a cutting port 19. The rear end of the horizontal punch 162 is connected and fixed to the front side of the transverse inclined block 161. The front end of the horizontal punch 162 can penetrate the top of the positioning bottom die 163 and enter the cutting port 19 of the side punching die 164.

[0024] Reference Figure 1 , Figure 6 and Figure 7 The transverse slant block 161 can drive the horizontal punch 162 to move forward and backward on the positioning bottom die 163. When the die is closed, the front side of the side punch slant plate 12 abuts against the front side of the drive slant groove 18. In this way, the side punch slant plate 12 moves down to abut against and drive the transverse slant block 161 to drive the horizontal punch 162 to move forward, so that the horizontal punch 162 punches the front side wall of the strip and enters the cutting hole 19 of the side punch die 164 to achieve a side opening. When the die is separated, the rear side of the side punch slant plate 12 can fit against the rear side of the drive slant groove 18 during the rising process, and drive the transverse slant block 161 to move backward. In this way, the horizontal punch 162 can move backward to disengage from the cutting hole 19, so that the transverse slant block 161 returns to its original position. There is a gap between the transverse inclined block 161 and the side punching die 164 and the positioning bottom die 163 so that the watch back cover in the strip can be pressed down onto the positioning bottom die 163 and will not be deformed during the side punching process. At the same time, the side punching die 164 and the cutting port 19 are set to ensure that the horizontal punch 162 can quickly punch the side of the watch back cover without deformation.

[0025] Reference Figure 1 , Figure 6 and Figure 7 The side-punch inclined plate 12 has a protrusion 20 protruding downward from the bottom center, and the bottom of the protrusion 20 is inclined downward and rearward. The transverse sliding block 161 has a downward-sloping groove 21 in the middle, and the top of the groove 21 is inclined downward and rearward. The protrusion 20 can abut against the groove 21. This arrangement ensures that the protrusion 20 of the side-punch inclined plate 12 cooperates with the groove 21, further preventing the transverse sliding block 161 from shaking during mold closing and opening, making the side-punch process more stable, the forward and backward movement smoother, and further achieving secondary positioning.

[0026] Reference Figure 1 , Figure 6 and Figure 7 The bottom of the side-punching inclined pressure plate 12 and the bottom of the protrusion 20 are both provided with arc-shaped parts, which can ensure that the contact surface between the side-punching inclined pressure plate 12 and the transverse sliding inclined block 161 is smoother.

[0027] Reference Figure 1 and Figure 2 The lower mold base 5 is provided with four outer guide pillars 22 on its upper part, and the upper mold base 1 is provided with four outer guide sleeves 23 corresponding to the outer guide pillars 22. Springs are provided on the outer guide pillars 22. This arrangement can ensure more accurate positioning when the mold is closed and achieve rapid mold separation and springback during the mold separation process.

[0028] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A side punching and rotary cutting die for a watch back cover, characterized in that: The system includes an upper mold base, an upper backing plate, an upper clamping plate, a stripper plate, a lower mold base, a lower backing plate, and a lower template. The upper backing plate is connected to the bottom of the upper mold base. The upper clamping plate is located below the upper backing plate. The stripper plate is connected to the bottom of the upper clamping plate. The bottom of the upper backing plate has four inner guide pillars. The bottom ends of the four inner guide pillars pass through the upper clamping plate and the stripper plate in sequence and extend beyond the bottom surface of the stripper plate. The upper clamping plate and the stripper plate are movably fitted onto the four inner guide pillars. The lower template is installed on the top of the lower backing plate. The lower backing plate is installed on the top of the lower mold base. The lower template and the lower backing plate have four internal guide sleeves that extend vertically through each other. Four inner guide sleeves are located directly below four inner guide posts, and the four inner guide posts can be fitted with the four inner guide sleeves vertically. From left to right, the bottom of the upper pad is equipped with a forming punch assembly, a vertical side punch, a side punch inclined pressure plate, and a rotary cutting punch. From left to right, the bottom of the lower die base is equipped with a forming bottom die assembly, a vertical side punch bottom die, a horizontal side punch punch assembly, and a rotary cutting bottom die. The bottoms of the forming punch assembly, the vertical side punch, the side punch inclined pressure plate, and the rotary cutting punch can all pass through the upper clamping plate and the stripper plate in sequence and then cooperate with the corresponding forming die base assembly, the vertical side punch bottom die, the horizontal side punch punch assembly, and the rotary cutting bottom die, respectively.

2. The watch back cover side punching and rotary cutting die as described in claim 1, characterized in that: The vertical side punch head is arc-shaped, and the middle part of the vertical side punch bottom die is cylindrical protrusion, with an arc-shaped groove on its front side that is adapted to the vertical side punch head.

3. The watch back cover side punching and rotary cutting die as described in claim 2, characterized in that: The horizontal side punch assembly includes a transverse inclined block, a horizontal punch, a positioning bottom die, and a side punch guide die. The transverse inclined block is mounted on the lower template and can move back and forth. The bottom of the side punch inclined plate is inclined downwards and backwards. The top of the transverse inclined block is provided with a driving inclined groove that is inclined downwards and backwards. The bottom of the side punch inclined plate can abut against the driving inclined groove downwards. The bottoms of the positioning bottom die and the side punch guide die are both mounted on the lower template. The positioning bottom die is located between the transverse inclined block and the side punch guide die. There are gaps between the transverse inclined block, the side punch guide die, and the positioning bottom die. The upper part of the side punch guide die is provided with a cutting port. The rear end of the horizontal punch is connected to the front side of the transverse inclined block. The front end of the horizontal punch can penetrate the top of the positioning bottom die and enter the cutting port of the side punch guide die.

4. The watch back cover side punching and rotary cutting die as described in claim 3, characterized in that: The lower middle part of the side punching inclined pressure plate protrudes downward to form a protrusion. The protrusion is inclined to the rear side downward. The middle part of the driving inclined groove is provided with a sinking inclined groove. The top of the sinking inclined groove is inclined to the rear side downward. The protrusion can abut against the sinking inclined groove.

5. The watch back cover side punching and rotary cutting die as described in claim 4, characterized in that: Both the bottom of the side-punching inclined pressure plate and the bottom of the protrusion are provided with arc-shaped parts.

6. A watch back cover side punching and rotary cutting die as described in any one of claims 1 to 5, characterized in that: The lower mold base is provided with four outer guide pillars on its upper part, and the upper mold base is provided with four outer guide sleeves that correspond to the outer guide pillars.

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