One-time forming and punching cutter die for mobile phone battery cover

Abstract

The application discloses a one-time forming and punching die for a mobile phone battery cover, which comprises a die assembly, the die assembly comprises a first die and a second die which are symmetrically arranged left and right and front and back respectively, the first die is provided with a first cutter, the second die is provided with a second cutter, position-avoiding grooves are formed in the two side edges of the first cutter, the second cutter can be cut into the position-avoiding grooves to prevent the first cutter and the second cutter from interfering with each other, an upper die fixing plate and a punching plate are sequentially arranged on the die assembly, the punching plate is fixedly connected with a first punching block and a second punching block, the upper die fixing plate is provided with a first punching groove and a second punching groove, the first punching block and the second punching block can pass through the first punching groove and the second punching groove respectively and act on the first die and the second die respectively to drive the first die and the second die to cut downwards, and thus the cutting of the waste edges around the battery cover can be completed through one-time punching.

Description

Technical Field

[0001] This invention relates to the field of mold technology, and in particular to a one-time forming punching die for a mobile phone battery cover. Background Technology

[0002] During the production of mobile phone battery covers, the battery cover needs to be punched to remove excess material around the perimeter. Traditional punching methods involve using one cutting machine to punch one side of the battery cover, then switching to another machine to cut the other two sides, making a one-time punching process impossible. Existing one-time punching equipment uses four cutting blades corresponding to the four sides of the battery cover to cut simultaneously. However, the horizontal and vertical cutting blades are prone to interference, i.e., blade collision. To avoid this interference, the length of the cutting blades is designed to be slightly shorter than the product's side length. While this prevents blade collision, it results in the inability to completely remove the waste edges of the battery cover, requiring further processing. Therefore, there is an urgent need for a punching die that can form the battery cover in one step to solve these problems. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide a one-time forming die for mobile phone battery covers, achieving one-time forming with non-interference between the transverse and longitudinal cutting blades, i.e., preventing blade collision.

[0004] To achieve the objective of this invention, the invention is implemented through the following technical solution: a one-time forming punching die for a mobile phone battery cover, comprising a die assembly, the die assembly comprising a first die arranged in a left-right mirror symmetry and a second die arranged in a front-back mirror symmetry, the first die having a first cutting blade, the second die having a second cutting blade, the first cutting blade having clearance grooves on both sides, the second cutting blade being able to cut into the clearance grooves to prevent the first cutting blade and the second cutting blade from interfering with each other;

[0005] The upper end of the die-cutting assembly is fixedly connected to an upper die fixing plate, and an upper mold is fixedly connected to the bottom center of the upper die fixing plate. The lower end of the die-cutting assembly is provided with a lower die fixing plate, and a lower mold is provided at the top center of the lower die fixing plate. The four walls of the lower mold are inclined inward, and the inclination angle is the same as the inclination angle of the first die-cutting and the second die-cutting.

[0006] The upper die fixing plate is provided with a first stamping groove in a mirror image symmetrically on the left and right, and a second stamping groove in a mirror image symmetrically on the front and back. A stamping plate is provided above the upper die fixing plate. A first stamping block in a mirror image symmetrically on the left and right and a second stamping block in a mirror image symmetrically on the front and back are fixedly connected to the bottom of the stamping plate. The first stamping block can pass through the first stamping groove and act on the top of the first die. The second stamping block can pass through the second stamping groove and act on the top of the second die. The distance between the top of the first die and the bottom of the first stamping block is smaller than the distance between the top of the second die and the bottom of the second stamping block.

[0007] The lower mold is provided with a square positioning part and positioning posts are provided around the lower mold. A fourth return spring is provided at the bottom of the positioning posts.

[0008] The first stamping block will first drive the first die to cut downwards. When the upper plane of the relief groove is flush with or lower than the lower surface of the second cutter on the second die, the second stamping block will touch the second die and drive the second die to cut downwards.

[0009] Preferably, the first die further includes a first mounting base, a first sliding connecting block, a first limiting block, a first fixed connecting block, and a first return spring. The first mounting base is provided with a first sliding groove with an inclined surface. The first sliding connecting block is slidably connected to the first sliding groove. The first sliding connecting block has a T-shaped structure. A first spring receiving groove is opened at the bottom of the first sliding groove. A first return spring is provided in the first spring receiving groove. A first cutter is fixedly connected to the lower end of the first sliding connecting block. First slide bars are provided on both sides of the upper end of the first sliding connecting block. A first fixed connecting block is fixedly connected to the upper surface of the first sliding connecting block. The first limiting block is fixedly connected to both sides of the first sliding groove and located on the upper surface of the first slide bar. A first connecting post is provided at the bottom end of the first fixed connecting block. The first connecting post is inserted into one end of the first return spring.

[0010] The second die-cutting mold further includes a second mounting base, a second sliding connecting block, a second limiting block, a second fixed connecting block, and a second return spring. The second mounting base has a second sliding groove with an inclined surface. The second sliding connecting block is slidably connected to the second sliding groove. The second sliding connecting block has a T-shaped structure. Two second spring receiving grooves are opened at the bottom of the second sliding groove. A second return spring is provided in each of the second spring receiving grooves. A second cutter is fixedly connected to the lower end of the second sliding connecting block. Second slide bars are provided on both sides of the upper end of the second sliding connecting block. A second fixed connecting block is fixedly connected to the upper surface of the second sliding connecting block. The second limiting block is fixedly connected to both sides of the second sliding groove and is located on the upper surface of the second slide bar. A second connecting post is provided at the bottom end of the second fixed connecting block. The second connecting post is inserted into one end of the second return spring.

[0011] Preferably, the bottom of the upper mold fixing plate is further provided with a first positioning block and a second positioning block, the first mounting base is provided with a first positioning groove, the second mounting base is provided with a second positioning groove, the first positioning block is adapted to the size of the first positioning groove, and the second positioning block is adapted to the size of the second positioning groove.

[0012] Preferably, the stamping plate has limit through holes at its four corners, the upper die fixing plate and the die-cutting assembly have through holes at their four corners, the lower die fixing plate has fixing holes at its four corners, a guide post is inserted into the limit through hole, the top of the guide post has a limit ring, and the bottom end of the guide post passes through the through holes at the four corners of the upper die fixing plate and the die-cutting assembly and is fixedly connected to the fixing hole. The bottom of the stamping plate also has a first countersunk hole, the upper die fixing plate has a through hole, the die-cutting assembly has a second countersunk hole, a third return spring is provided between the first countersunk hole and the second countersunk hole, the third return spring passes through the through hole in the upper die fixing plate, and the bottom of the die-cutting assembly also has a connecting bolt, the threaded end of the connecting bolt passes through the upper die fixing plate and is fixed to the bottom of the stamping plate.

[0013] Preferably, the bottom of the lower mold fixing plate is fixedly connected to an installation plate.

[0014] The beneficial effects of this invention are as follows:

[0015] The present invention provides a one-time forming punching die for a mobile phone battery cover. A clearance groove is provided on both sides of the first cutter, allowing the second cutter to cut into the clearance groove. This avoids interference and collision between the first and second cutters during a single punching operation. To further prevent interference and collision, the distance between the top of the first die and the bottom of the first stamping block is set to be less than the distance between the top of the second die and the bottom of the second stamping block. During the punching process, the first stamping block first drives the first die to cut downwards. Only when the upper plane of the clearance groove is flush with or lower than the lower surface of the second cutter on the second die will the second stamping block touch the second die and drive it to cut downwards. This allows for the removal of waste edges around the battery cover in a single punching operation, completely avoiding interference and collision between the cutters. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is an exploded view of the present invention;

[0018] Figure 3 This is a schematic diagram of the top structure of the stamping plate in this invention;

[0019] Figure 4 A schematic diagram of the bottom structure of the stamping plate in this invention;

[0020] Figure 5 This is a schematic diagram of the bottom structure of the upper mold fixing plate in this invention;

[0021] Figure 6 This is a schematic diagram of the die-cutting assembly structure in this invention;

[0022] Figure 7 This is a schematic diagram of the first die-cutting structure in this invention;

[0023] Figure 8 for Figure 7 Enlarged view of section A in the middle;

[0024] Figure 9 This is a schematic diagram of the first fixed connecting block structure in this invention;

[0025] Figure 10 This is a schematic diagram of the second die structure in this invention;

[0026] Figure 11 This is a schematic diagram of the lower mold fixing plate structure in this invention;

[0027] Figure 12 This is a schematic diagram of the positioning column structure in this invention;

[0028] Figure 13 This is a cross-sectional view of the overall structure of the present invention;

[0029] Figure 14 This is a longitudinal cross-sectional view of the overall structure of the present invention;

[0030] Figure 15 This is a schematic diagram of the structure of a mobile phone battery cover.

[0031] in:

[0032] 1. Stamping plate; 11. First stamping block; 12. Second stamping block; 13. Limiting through hole; 14. First countersunk hole;

[0033] 2. Upper mold fixing plate; 21. First stamping groove; 22. Second stamping groove; 23. First positioning block; 24. Second positioning block;

[0034] 3. Place the mold;

[0035] 4. Die-cutting mold assembly;

[0036] 41. First die-cutting mold; 411. First cutting blade; 4111. Alternating groove; 412. First mounting base; 4121. First sliding groove; 4122. First spring receiving groove; 4123. First positioning groove; 4124. Second countersunk hole; 413. First sliding connecting block; 4131. First slide bar; 414. First limiting block; 415. First fixed connecting block; 4151. First connecting post; 416. First return spring;

[0037] 42. Second die; 421. Second cutting blade; 422. Second mounting base; 4221. Second slide groove; 4222. Second spring receiving groove; 4223. Second positioning groove; 423. Second sliding connecting block; 4231. Second slide bar; 424. Second limiting block; 425. Second fixed connecting block; 4251. Second connecting post; 426. Second return spring;

[0038] 43. Connecting bolts;

[0039] 5. Lower mold fixing plate; 51. Fixing holes;

[0040] 6. Lower mold; 61. Square positioning part; 62. Positioning pin; 621. Fourth return spring;

[0041] 7. Guide post; 71. Limiting ring;

[0042] 8. Third return spring; 9. Mounting plate;

[0043] 10. Main body of mobile phone battery cover; 101. Waste edge; 102. Positioning hole; 103. Square positioning groove. Detailed Implementation

[0044] To enhance understanding of the present invention, the present invention will be further described in detail below with reference to embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0045] according to Figure 1-15 As shown, this embodiment provides a one-time forming punching die for a mobile phone battery cover, including a die assembly 4. The die assembly 4 includes a first die 41 arranged in a left-right mirror symmetry and a second die 42 arranged in a front-back mirror symmetry. The first die 41 and the second die 42 together form a hollow structure with a rectangular center. This hollow structure corresponds to the position where the upper die 3 and the lower die 6 clamp the main body 10 of the mobile phone battery cover. The first die 41 is provided with a first cutter 411, and the second die 42 is provided with a second cutter 421. The first cutter 411 has clearance grooves 4111 on both sides. The second cutter 421 can cut into the clearance grooves 4111 to prevent the first cutter 411 and the second cutter 421 from interfering with each other, i.e., colliding with each other.

[0046] The upper end of the die-cutting assembly 4 is fixedly connected to the upper die fixing plate 2, and the lower center of the upper die fixing plate 2 is fixedly connected to the upper mold 3. The lower end of the die-cutting assembly 4 is provided with the lower die fixing plate 5, and the lower mold 6 is provided at the top center of the lower mold fixing plate 5. The four walls of the lower mold 6 are inclined inward, and the inclination angle is the same as the inclination angle of the first die 41 and the second die 42 to avoid interference and collision between the cutting tool and the mold. The upper mold 3 and the lower mold 6 can clamp and fix the main body of the mobile phone battery cover 10, which is convenient for punching.

[0047] The upper die fixing plate 2 has a first stamping groove 21 that is mirror-symmetrically formed on the left and right sides, and a second stamping groove 22 that is mirror-symmetrically formed on the front and back sides. A stamping plate 1 is provided above the upper die fixing plate 2. A first stamping block 11 that is mirror-symmetrically formed on the left and right sides, and a second stamping block 12 that is mirror-symmetrically formed on the front and back sides are fixedly connected to the bottom of the stamping plate 1. The first stamping block 11 can pass through the first stamping groove 21 and act on the top of the first die 41. The second stamping block 12 can pass through the second stamping groove 22 and act on the top of the second die 42. The top of the first die 41 and the bottom of the first stamping block 11 are connected. The distance between the two blanks is less than the distance between the top of the second die 42 and the bottom of the second stamping block 12. In this way, the first stamping block 11 will drive the first die 41 to cut down first. When the upper surface of the relief groove 4111 on the first die 41 is flush with or lower than the lower surface of the second cutter 421 on the second die 42, the second stamping block 12 will touch the second die 42 and drive the second die 42 to cut down. This can achieve the removal of the waste edge 101 around the mobile phone battery cover in one punching, and completely avoid mutual interference and collision between the cutters.

[0048] The lower mold 6 is provided with a square positioning part 61, which positions the square positioning hole 103. The lower mold 6 is provided with positioning posts 62 around its perimeter. The positioning posts 62 are used to position the positioning hole 102 on the waste edge 101 to prevent the main body 10 of the mobile phone battery cover from shifting and affecting the punching effect. The bottom of the positioning post 62 is provided with a fourth return spring 621. When the first die 41 is cutting downwards, the bottom of the first cutter 411 will abut against the top of the positioning post 62. Due to the setting of the fourth return spring 621, the positioning post 62 will move downwards under the action of force to prevent the first cutter 411 from making hard contact with the positioning post 62 and causing damage to each other. When the first cutter 411 returns to its original position, the positioning post 62 will be reset under the action of the restoring force of the fourth return spring 621.

[0049] Specifically, the first die-cutting mold 41 further includes a first mounting base 412, a first sliding connecting block 413, a first limiting block 414, a first fixed connecting block 415, and a first return spring 416. The first mounting base 412 is provided with a first sliding groove 4121 with an inclined surface. The first sliding connecting block 413 is slidably connected to the first sliding groove 4121. The first sliding connecting block 413 has a T-shaped structure. A first spring receiving groove 4122 is opened at the bottom of the first sliding groove 4121. The first return spring 416 is provided in the first spring receiving groove 4122. A first cutting blade 411 is fixedly connected to the lower end of the first sliding connecting block 413. The upper end of the connecting block 413 is provided with first slide bars 4131 on both sides. The upper end surface of the first sliding connecting block 413 is fixedly connected with a first fixed connecting block 415. The first limiting block 414 is fixedly connected to both sides of the first slide groove 4121 and located on the upper surface of the first slide bar 4131 to prevent the first sliding connecting block 413 from disengaging from the first slide groove 4121. The bottom end of the first fixed connecting block 415 is provided with a first connecting post 4151. The first connecting post 4151 is inserted into one end of the first return spring 416. The first return spring 416 provides an upward restoring force to the first fixed connecting block 415 to realize the automatic return of the first cutter 411.

[0050] The second die-cutting mold 42 further includes a second mounting base 422, a second sliding connecting block 423, a second limiting block 424, a second fixed connecting block 425, and a second return spring 426. The second mounting base 422 is provided with a second sliding groove 4221 with an inclined surface. The second sliding connecting block 423 is slidably connected to the second sliding groove 4221. The second sliding connecting block 423 has a T-shaped structure. Two second spring receiving grooves 4222 are opened at the bottom of the second sliding groove 4221. A second return spring 426 is provided in each of the second spring receiving grooves 4222. The lower end of the second sliding connecting block 423 is fixedly connected to the second cutter 421. The upper end of the connecting block 423 is provided with a second slide bar 4231 on both sides. The upper end surface of the second sliding connecting block 423 is fixedly connected with a second fixed connecting block 425. The second limiting block 424 is fixedly connected to both sides of the second slide groove 4221 and is located on the upper surface of the second slide bar 4231 to prevent the second sliding connecting block 423 from disengaging from the second slide groove 4221. The bottom end of the second fixed connecting block 425 is provided with a second connecting post 4251. The second connecting post 4251 is inserted into one end of the second return spring 426. The second return spring 426 provides an upward restoring force to the second fixed connecting block 425 to realize the automatic return of the second cutter 421.

[0051] Furthermore, the bottom of the upper mold fixing plate 2 is also provided with a first positioning block 23 and a second positioning block 24. The first mounting base 412 is provided with a first positioning groove 4123, and the second mounting base 422 is provided with a second positioning groove 4223. The first positioning block 23 is adapted to the size of the first positioning groove 4123, and the second positioning block 24 is adapted to the size of the second positioning groove 4223. This can ensure that the upper mold fixing plate 2 and the die assembly 4 are stably connected. At the same time, pre-positioning can be performed during connection, making it convenient to use bolts to fix the upper mold fixing plate 2 and the die assembly 4.

[0052] Furthermore, the stamping plate 1 has limit through holes 13 at its four corners, the upper die fixing plate 2 and the die-cutting assembly 4 each have through holes at their four corners, and the lower die fixing plate 5 has fixing holes 51 at its four corners. Guide posts 7 are inserted into the limit through holes 13, each guide post 7 has a limit ring 71 at its top, and its bottom end passes through the through holes at the four corners of the upper die fixing plate 2 and the die-cutting assembly 4 and is fixedly connected to the fixing holes 51. The guide posts 7 have an anti-deviation function to ensure stamping quality. The stamping plate 1 also has a first countersunk hole 14 at its bottom. The upper die fixing plate 2 has a through hole, and the die assembly 4 has a second countersunk hole 4124. A third return spring 8 is provided between the first countersunk hole 14 and the second countersunk hole 4124. The third return spring 8 passes through the through hole on the upper die fixing plate 2. The bottom of the die assembly 4 is also provided with a connecting bolt 43. The threaded end of the connecting bolt 43 passes through the upper die fixing plate 2 and is fixed to the bottom of the stamping plate 1. When the force on the stamping plate 1 is withdrawn, the stamping plate 1 can be automatically reset under the restoring force of the third return spring 8.

[0053] Furthermore, a mounting plate 9 is fixedly connected to the bottom of the lower die fixing plate 5, and the mounting plate 9 is used to fix the lower die fixing plate 5 on the punch press.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A one-piece punching die for forming a mobile phone battery cover, characterized in that: The tooling includes a die assembly (4), which includes a first die (41) arranged in a left-right mirror symmetry and a second die (42) arranged in a front-back mirror symmetry. The first die (41) is provided with a first cutter (411), and the second die (42) is provided with a second cutter (421). The first cutter (411) has clearance grooves (4111) on both sides, and the second cutter (421) can cut into the clearance grooves (4111) to prevent the first cutter (411) and the second cutter (421) from interfering with each other. The upper end of the die-cutting assembly (4) is fixedly connected to an upper die fixing plate (2), and an upper mold (3) is fixedly connected to the bottom center of the upper die fixing plate (2). The lower end of the die-cutting assembly (4) is provided with a lower die fixing plate (5), and the top center of the lower die fixing plate (5) is provided with a lower mold (6). The four walls of the lower mold (6) are inclined inward, and the inclination angle is consistent with the inclination angle of the first die-cutting die (41) and the second die-cutting die (42). The upper mold fixing plate (2) has a first stamping groove (21) symmetrically opened on the left and right sides, and a second stamping groove (22) symmetrically opened on the front and back sides. A stamping plate (1) is provided above the upper mold fixing plate (2). A first stamping block (11) symmetrically opened on the left and right sides and a second stamping block (12) symmetrically opened on the front and back sides are fixedly connected to the bottom of the stamping plate (1). The first stamping block (11) can pass through the first stamping groove (21) and act on the top of the first die (41). The second stamping block (12) can pass through the second stamping groove (22) and act on the top of the second die (42). The distance between the top of the first die (41) and the bottom of the first stamping block (11) is smaller than the distance between the top of the second die (42) and the bottom of the second stamping block (12). The lower mold (6) is provided with a square positioning part (61), and positioning posts (62) are provided around the lower mold (6). A fourth return spring (621) is provided at the bottom of the positioning posts (62). The first stamping block (11) will first drive the first die (41) to cut downwards. When the upper plane of the relief groove (4111) is flush with or lower than the lower surface of the second cutter (421) on the second die (42), the second stamping block (12) will touch the second die (42) and drive the second die (42) to cut downwards.

2. The one-piece forming die for a mobile phone battery cover according to claim 1, characterized in that: The first die-cutting mold (41) further includes a first mounting base (412), a first sliding connecting block (413), a first limiting block (414), a first fixed connecting block (415), and a first return spring (416). The first mounting base (412) is provided with a first sliding groove (4121) with an inclined surface. The first sliding connecting block (413) is slidably connected to the first sliding groove (4121). The first sliding connecting block (413) has a T-shaped structure. A first spring receiving groove (4122) is opened at the bottom of the first sliding groove (4121). A first return spring (416) is provided in the first spring receiving groove (4122). 16) A first cutter (411) is fixedly connected to the lower end of the first sliding connecting block (413), a first slide bar (4131) is provided on both sides of the upper end of the first sliding connecting block (413), a first fixed connecting block (415) is fixedly connected to the upper end surface of the first sliding connecting block (413), a first limiting block (414) is fixedly connected to both sides of the first slide groove (4121) and located on the upper surface of the first slide bar (4131), a first connecting post (4151) is provided at the bottom end of the first fixed connecting block (415), and the first connecting post (4151) is inserted into one end of the first reset spring (416); The second die-cutting mold (42) further includes a second mounting base (422), a second sliding connecting block (423), a second limiting block (424), a second fixed connecting block (425), and a second return spring (426). The second mounting base (422) is provided with a second sliding groove (4221) with an inclined surface. The second sliding connecting block (423) is slidably connected to the second sliding groove (4221). The second sliding connecting block (423) has a T-shaped structure. Two second spring receiving grooves (4222) are opened at the bottom of the second sliding groove (4221). A second return spring is provided in each of the second spring receiving grooves (4222). (426) A second cutter (421) is fixedly connected to the lower end of the second sliding connecting block (423). A second slide bar (4231) is provided on both sides of the upper end of the second sliding connecting block (423). A second fixed connecting block (425) is fixedly connected to the upper end surface of the second sliding connecting block (423). A second limiting block (424) is fixedly connected to both sides of the second slide groove (4221) and located on the upper surface of the second slide bar (4231). A second connecting post (4251) is provided at the bottom end of the second fixed connecting block (425). The second connecting post (4251) is inserted into one end of the second reset spring (426).

3. The one-piece forming die for a mobile phone battery cover according to claim 1, characterized in that: The bottom of the upper mold fixing plate (2) is also provided with a first positioning block (23) and a second positioning block (24). The first mounting base (412) is provided with a first positioning groove (4123), and the second mounting base (422) is provided with a second positioning groove (4223). The first positioning block (23) is adapted to the size of the first positioning groove (4123), and the second positioning block (24) is adapted to the size of the second positioning groove (4223).

4. The one-piece forming die for a mobile phone battery cover according to claim 1, characterized in that: The stamping plate (1) has limit through holes (13) at its four corners. The upper mold fixing plate (2) and the die-cutting assembly (4) also have through holes at their four corners. The lower mold fixing plate (5) has fixing holes (51) at its four corners. A guide post (7) is inserted into the limit through hole (13). The top of the guide post (7) has a limit ring (71). The bottom end of the guide post (7) passes through the through holes at the four corners of the upper mold fixing plate (2) and the die-cutting assembly (4) and is fixedly connected to the fixing hole (51). The bottom of the stamping plate (1) is also provided with There is a first countersunk hole (14), and a through hole is provided on the upper mold fixing plate (2). A second countersunk hole (4124) is provided on the die assembly (4). A third return spring (8) is provided between the first countersunk hole (14) and the second countersunk hole (4124). The third return spring (8) passes through the through hole provided on the upper mold fixing plate (2). A connecting bolt (43) is also provided at the bottom of the die assembly (4). The threaded end of the connecting bolt (43) passes through the upper mold fixing plate (2) and is fixed to the bottom of the stamping plate (1).

5. The one-piece forming die for a mobile phone battery cover according to claim 1, characterized in that: The bottom of the lower mold fixing plate (5) is fixedly connected to the mounting plate (9).

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