Elastic sheet forming die and process

Abstract

The invention discloses an elastic piece forming mold and process, and is applied to the technical field of elastic piece forming molds. The elastic piece forming mold comprises a shell assembly, the shell assembly comprises an outer shell, a top cover is arranged at the top of the outer shell, and an inner shell is arranged in the outer shell. Through the arrangement of the rotating gear and the rack, the upper mold piece can do reciprocating motion, deformation force is gradually applied to the sheet, the action can distinguish rebound resilience brought by one-time bending, rebound stress can be effectively reduced through repeated bending, and when the deformation force is applied to the sheet every time, the deformation force can be effectively reduced. When the upper die piece is bent, a rebound space capable of releasing stress is reserved for the upper die piece, then deformation force continues to be applied, the operation is repeated till the upper die piece makes contact with the lower die piece, and at the moment, bending of the sheet is completed, and the elastic piece is formed. Through the arrangement, the efficient forming effect of the elastic pieces is achieved, the uniformity of the forming quality of the elastic pieces in batches in a workshop is improved, and the forming quality of the elastic pieces is effectively improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of shrapnel forming dies, and particularly relates to a shrapnel forming die and process. Background Art

[0002] With the rapid development of 3C electronics, the characteristics of being thinner and lighter are becoming increasingly prominent, which requires components made of ultra-hard shrapnel in 3C electronics. After the shrapnel is formed and bent, due to a large springback rate, such as a 50% springback. In such a case, if you want to bend the shrapnel to a certain angle, multiple bending deformations are often required, and it is difficult to achieve the desired result in one step of bending; when the same shrapnel has multiple consecutive bends, even more multiple bending deformations are needed, but this method will result in low forming efficiency of ultra-thin shrapnel. Or preset the springback range of the shrapnel and increase the bending arc so that the shrapnel has the required bending angle after springback. However, this method is likely to result in insufficient batch forming consistency of the shrapnel. Summary of the Invention

[0003] The purpose of the present invention is to provide a shrapnel forming die and process, the advantage of which is to distinguish the springback caused by one-time bending, achieve an efficient forming effect on the shrapnel, increase the uniformity of the forming quality of the shrapnel in the workshop batches, effectively improve the forming quality of the shrapnel; and the operation is simple, and the reciprocating movement speed can be determined by the driving speed of the external cylinder, making it flexible to use.

[0004] The above technical purpose of the present invention is achieved through the following technical solutions: a shrapnel forming die and process, including a housing assembly, the housing assembly includes an outer shell, a top cover is provided on the top of the outer shell, an inner shell is provided inside the outer shell, a linkage assembly is provided inside the outer shell, the linkage assembly includes a rack, the rack is fixedly connected to the rear side inside the outer shell, a rotating gear penetrating through the front side and the rear side of the inner shell is provided on the inner side of the inner shell, a moving assembly is provided at the bottom of the inner shell, and a lower die assembly is provided at the bottom of the outer shell.

[0005] With the above technical solution, when using the shrapnel forming die and process, the operator first connects and fastens the required parts of the housing assembly to the external cylinder, and then places the sheet to be formed on the lower die assembly, where the lower die assembly has the effect of limiting the sheet. During use, the operation of the external cylinder will drive the housing assembly, linkage assembly, and moving assembly to move uniformly. Among them, the housing assembly first contacts the lower die assembly and stays in place due to limiting extrusion. At this time, the linkage assembly and the moving assembly will continue to move downward. The linkage assembly will realize its own driving operation by moving inside the housing assembly and drive the moving assembly to realize its reciprocating movement. During the reciprocating movement brought by the moving assembly, a deforming force will be gradually applied to the sheet. This behavior will be different from the resilience caused by a one-time bending. Its repeated bending can effectively reduce the appearance of rebound stress. When the deforming force is applied to the sheet each time, a rebound space for stress release will be left for it, and then the deforming force will be applied continuously until the moving assembly contacts the lower die assembly. At this time, the bending of the sheet will be completed and a shrapnel will be formed. Through this setting, the efficient forming effect of the shrapnel can be achieved, the uniformity of the shrapnel forming quality in the workshop batches can be increased, the forming quality of the shrapnel can be effectively improved, and the structure is simple to operate. The reciprocating movement speed can be determined by the driving speed of the external cylinder, which is flexible to use. At the same time, it is also different from the situation in some current workshops where the sheet is bent multiple times or excessively bent to ensure the bending angle of the shrapnel. This situation further ensures the yield rate of the formed shrapnel.

[0006] The present invention is further configured as follows: mounting plates one are fixedly installed at the tops of both sides of the outer shell and the bottoms of both sides of the top cover, and adjacent two of the mounting plates one are bolted to each other. A mounting plate two is fixedly installed at the top of the inner shell. Sliders one are fixedly installed on both sides of the inner shell. A chute one for sliding cooperation with the slider one is opened inside the outer shell.

[0007] With the above technical solution, the mounting plate one will facilitate the installation and disassembly between the outer shell and the top cover, and the mounting plate two will be used for the fastening installation with the output end of the external cylinder. The chute one and the chute one will realize the movement guidance of the inner shell inside the outer shell.

[0008] The present invention is further configured as follows: guide rods one are fixedly installed on both sides of the top of the inner shell and penetrate through the top of the top cover. The guide rods one are slidably connected to the top cover. A spring one is sleeved on the surface of the guide rods one. The two ends of the spring one are fixedly connected to the inner shell and the top cover respectively. A limit block is fixedly installed at the top of the guide rods one.

[0009] With the above technical solution, during the movement of the inner shell, the change between the inner shell and the outer shell will be guided through the first guide rod. Among them, the first spring will contract in coordination with the movement of the inner shell. In its initial state, the first spring is also the initial state of the external relationship between the inner shell and the outer shell. The limit block is used to prevent the first guide rod from slipping out of the inner part of the outer shell.

[0010] The present invention is further configured as: an outer ratchet ring is fixedly sleeved inside the rotating gear, an inner ratchet ring is engaged inside the outer ratchet ring, and a first rod body rotatably connected to the inside of the inner shell is fixedly sleeved inside the inner ratchet ring.

[0011] With the above technical solution, in the one-way engagement between the outer ratchet ring and the inner ratchet ring, the rotation of the rotating gear will only be able to drive the first rod body to rotate synchronously in the counterclockwise direction, while in the clockwise rotation of the rotating gear, it will not be able to drive the first rod body to rotate.

[0012] The present invention is further configured as: a first bevel gear is fixedly installed at one end of the first rod body, a second bevel gear is meshed on the surface of the first bevel gear, a second rod body penetrating to the bottom of the inner shell is fixedly sleeved inside the second bevel gear, and the second rod body is rotatably connected to the inner shell.

[0013] With the above technical solution, the rotation of the first rod body will drive the first bevel gear to rotate, and the rotation of the first bevel gear will drive the second bevel gear and the second rod body to rotate.

[0014] The present invention is further configured as: the moving assembly includes a first rotating rod and a second rotating rod. The first rotating rod is fixedly connected to the bottom of the second rod body, the second rotating rod is fixedly connected to the bottom of the inner shell. A moving plate is sleeved on the surfaces of the first rotating rod and the second rotating rod. A top die part penetrating to the bottom of the outer shell is fixedly installed at the bottom of the moving plate. A sleeve ring is sleeved on the surface of the first rotating rod. A clamping part is fixedly installed inside the sleeve ring. Vertical grooves and inclined grooves communicating with each other are formed on the surface of the first rotating rod. Both the vertical grooves and the inclined grooves are used for clamping and sliding in cooperation with the clamping part.

[0015] With the above technical solution, the rotation of the second rod body will drive the first rotating rod to rotate synchronously. The rotation of the first rotating rod will realize the longitudinal change of the clamping part through the design of the vertical grooves and the inclined grooves. Among them, the clamping part, the sleeve ring and the moving plate will move synchronously, and the second rotating rod will guide the movement of the moving plate and the top die part.

[0016] The present invention is further configured such that: support rings are sleeved on the surfaces of the first rotating rod and the second rotating rod. The support ring on the surface of the first rotating rod is rotatably connected to the first rotating rod through a bearing, and the support ring on the surface of the second rotating rod is fixedly connected to the second rotating rod. Ear plates are fixedly installed on both sides of the support ring. A second guide rod fixedly connected to the top of the moving plate is slidably connected inside the ear plate. A second spring is sleeved on the surface of the second guide rod, and the two ends of the second spring are fixedly connected to the moving plate and the ear plate respectively.

[0017] With the above technical solution, when the moving plate moves on the surfaces of the first rotating rod and the second rotating rod, the arrangement of the support ring will cause the second spring to contract, and the second guide rod supports the second spring.

[0018] The present invention is further configured such that: the lower die assembly includes a base. At both ends inside the base, lower die members are respectively provided. The two lower die members are symmetrically designed. A convex block is integrally formed on one side of the bottom of the lower die member. An inner rod rotatably connected to the base is fixedly sleeved inside the convex block. A first fixing member is fixedly installed on the front side of the lower die member, and two first fixing members are fixedly installed at both ends of the front side of the base. A tension spring is sleeved between the first fixing member and the second fixing member.

[0019] With the above technical solution, the lower die member will rotate and adjust inside the base through the inner rod and the convex block. During the rotation of the lower die member, the first fixing member will be driven to move, causing the tension spring to contract or extend. The tension spring facilitates the lower die member to return to the initial position.

[0020] The present invention is further configured such that: a first baffle is fixedly installed on one side of the top of the lower die member, a second baffle is fixedly installed on the rear side of the top of the base, two first side plates are fixedly installed at both ends of the top of the base, a second side plate is fixedly installed on the top of the first side plate, two second sliders are fixedly installed on both sides of the outer shell, and a second sliding groove for the second slider to slide is formed on one side of the second side plate.

[0021] With the above technical solution, the first baffle and the second baffle will limit the sheet material on the top of the lower die member. The sliding connection between the second slider and the second sliding groove facilitates the movement guiding of the outer shell between the second side plates.

[0022] In summary, the present invention has the following beneficial effects:

[0023] 1. When using the shrapnel forming die and process, the reciprocating movement of the upper die part can be achieved through the setting of the rotating gear and rack, and a deforming force is gradually applied to the sheet material. This behavior is different from the resilience caused by a one-time bending. The repeated bending can effectively reduce the occurrence of rebound stress. When the deforming force is applied to the sheet material each time, a rebound space for stress release is left for it, and then the deforming force is applied continuously. This is repeated until the upper die part contacts the lower die part. At this time, the bending of the sheet material is completed and the shrapnel is formed. Through this setting, an efficient forming effect of the shrapnel can be achieved, increasing the uniformity of the shrapnel forming quality in the workshop batches and effectively improving the forming quality of the shrapnel;

[0024] 2. When using the shrapnel forming die and process, the structure is simple in operation. The reciprocating movement speed can be determined by the driving speed of the external cylinder, making it flexible to use. At the same time, it is different from the situation in some current workshops where the sheet material is bent multiple times or excessively bent to ensure the bending angle of the shrapnel. This situation further ensures the yield rate of the formed shrapnel. Brief Description of the Drawings

[0025] Figure 1 is the three-dimensional structure schematic diagram of the present invention;

[0026] Figure 2 is the enlarged schematic diagram of the housing assembly of the present invention;

[0027] Figure 3 is the enlarged cross-sectional view of the outer shell of the present invention;

[0028] Figure 4 is the enlarged exploded cross-sectional view of the outer shell and the top cover of the present invention;

[0029] Figure 5 is the enlarged schematic diagram of the housing assembly, linkage assembly and moving assembly of the present invention;

[0030] Figure 6 is the enlarged schematic diagram of the linkage assembly and moving assembly of the present invention;

[0031] Figure 7 is the enlarged exploded schematic diagram of the housing assembly and moving assembly of the present invention;

[0032] Figure 8 is the enlarged exploded schematic diagram of the linkage assembly and moving assembly of the present invention;

[0033] Figure 9 is the enlarged side view schematic diagram of the inner ratchet ring and outer ratchet ring of the present invention;

[0034] Figure 10 is the enlarged exploded schematic diagram of the moving assembly of the present invention;

[0035] Figure 11It is an enlarged schematic diagram of the first rotating rod and the collar of the present invention;

[0036] Figure 12 It is an enlarged exploded schematic diagram of the first rotating rod and the collar of the present invention;

[0037] Figure 13 It is a schematic diagram of the lower die assembly of the present invention;

[0038] Figure 14 It is an enlarged exploded schematic diagram of the lower die assembly of the present invention;

[0039] Figure 15 It is an enlarged schematic diagram of the upper die part and the lower die part cooperating with the sheet material for bending use of the present invention.

[0040] Reference numerals:

[0041] 1. Housing assembly; 101. Outer shell; 102. Top cover; 103. First mounting plate; 104. Inner shell; 105. Second mounting plate; 106. First slider; 107. First chute; 108. First guide rod; 109. First spring; 1010. Limiting block;

[0042] 2. Linkage assembly; 201. Rack; 202. Rotating gear; 203. First rod body; 204. Inner ratchet ring; 205. Outer ratchet ring; 206. First bevel gear; 207. Second bevel gear; 208. Second rod body;

[0043] 3. Moving assembly; 301. First rotating rod; 302. Second rotating rod; 303. Vertical groove; 304. Inclined groove; 305. Collar; 306. Clamping part; 307. Support ring; 308. Ear plate; 309. Second guide rod; 3010. Second spring; 3011. Moving plate; 3012. Upper die part;

[0044] 4. Lower die assembly; 401. Base; 402. Lower die part; 403. Protrusion; 404. Inner rod; 405. First fixing part; 406. Second fixing part; 407. Tensile spring; 408. First baffle; 409. First side plate; 4010. Second side plate; 4011. Second chute; 4012. Second slider; 4013. Second baffle. Detailed implementation manner

[0045] The present invention will be further described in detail below with reference to the accompanying drawings.

[0046] Embodiment: Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 ,Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 , A shrapnel forming die and process, including a housing assembly 1. The housing assembly 1 includes an outer shell 101. A top cover 102 is provided at the top of the outer shell 101. An inner shell 104 is provided inside the outer shell 101. A linkage assembly 2 is provided inside the outer shell 101. The linkage assembly 2 includes a rack 201. The rack 201 is fixedly connected to the rear side inside the outer shell 101. A rotating gear 202 penetrating through the front and rear sides of the inner shell 104 is provided on the inner side of the inner shell 104. A moving assembly 3 is provided at the bottom of the inner shell 104. A lower die assembly 4 is provided at the bottom of the outer shell 101. When using the shrapnel forming die and process, the operator first connects and fastens the required parts of the housing assembly 1 to an external cylinder, and then places the sheet to be formed on the lower die assembly 4. The lower die assembly 4 has the effect of limiting the sheet. During use, the operation of the external cylinder will drive the housing assembly 1, the linkage assembly 2, and the moving assembly 3 to move uniformly. Among them, the housing assembly 1 first contacts the lower die assembly 4 and stays in place due to being limited and squeezed. At this time, the linkage assembly 2 and the moving assembly 3 will continue to move downward. The linkage assembly 2 will realize its own driving operation through moving inside the housing assembly 1 and drive the moving assembly 3 to realize its reciprocating movement. During the reciprocating movement brought by the moving assembly 3, a deforming force will be gradually applied to the sheet. This behavior will be different from the resilience brought by a one-time bending. Its repeated bending can effectively reduce the appearance of rebound stress. When the deforming force is applied to the sheet each time, a rebound space for releasing stress will be left for it, and then the deforming force will be applied continuously until the moving assembly 3 contacts the lower die assembly 4. At this time, the bending of the sheet will be completed and a shrapnel will be formed. Through this setting, an efficient forming effect of the shrapnel can be achieved, increasing the uniformity of the shrapnel forming quality in the workshop batches, effectively improving the forming quality of the shrapnel, and the structure is simple to operate. The reciprocating movement speed can be determined by the driving speed of the external cylinder, which is flexible to use. At the same time, it is also different from the situation in some current workshops where the sheet is bent multiple times or excessively bent to ensure the bending angle of the shrapnel. This situation further ensures the yield rate of the formed shrapnel.

[0047] Reference Figure 1 , Figure 2 , Figure 3, mounting plates one 103 are fixedly installed at the tops on both sides of the outer shell 101 and at the bottoms on both sides of the top cover 102. Adjacent two mounting plates one 103 are bolted to each other. A mounting plate two 105 is fixedly installed at the top of the inner shell 104. Sliders one 106 are fixedly installed on both sides of the inner shell 104. A chute one 107 for the slider one 106 to slide is opened inside the outer shell 101. The mounting plate one 103 facilitates the installation and disassembly between the outer shell 101 and the top cover 102. The mounting plate two 105 is used for the fastening installation with the output end of an external cylinder. The chute one 107 and the chute one 107 realize the movement guiding of the inner shell 104 inside the outer shell 101.

[0048] Reference Figure 2 , Figure 3 , Figure 4 , guide rods one 108 penetrating through to the top of the top cover 102 are fixedly installed on both sides at the top of the inner shell 104. The guide rods one 108 are slidably connected with the top cover 102. A spring one 109 is sleeved on the surface of the guide rod one 108. Two ends of the spring one 109 are respectively fixedly connected with the inner shell 104 and the top cover 102. A limit block 1010 is fixedly installed at the top of the guide rod one 108. During the movement of the inner shell 104, the change guiding between the inner shell 104 and the outer shell 101 is realized through the guide rod one 108. The spring one 109 contracts in cooperation with the movement of the inner shell 104. In its initial state, the spring one 109 is also the initial state of the external relationship between the inner shell 104 and the outer shell 101. The limit block 1010 is used to prevent the guide rod one 108 from slipping out of the inner part of the outer shell 101.

[0049] Reference Figure 6 , Figure 7 , Figure 8 , an external ratchet ring 205 is fixedly sleeved inside the rotating gear 202. An internal ratchet ring 204 is engaged inside the external ratchet ring 205. A rod body one 203 rotatably connected inside the inner shell 104 is fixedly sleeved inside the internal ratchet ring 204. In the one-way engagement between the external ratchet ring 205 and the internal ratchet ring 204, the rotation of the rotating gear 202 can only drive the rod body one 203 to rotate synchronously in the counterclockwise direction, while in the clockwise rotation of the rotating gear 202, the rod body one 203 cannot be driven to rotate.

[0050] Reference Figure 5 , Figure 6 , Figure 8, one end of the rod body 203 is fixedly installed with a first bevel gear 206, the surface of the first bevel gear 206 is engaged with a second bevel gear 207, the inside of the second bevel gear 207 is fixedly sleeved with a rod body 208 that penetrates to the bottom of the inner shell 104, and the rod body 208 and the inner shell 104 are rotatably connected to each other. The rotation of the rod body 203 will drive the first bevel gear 206 to rotate. Among them, the rotation of the first bevel gear 206 will drive the second bevel gear 207 and the rod body 208 to rotate.

[0051] Reference Figure 6 , Figure 7 , Figure 8 , the moving component 3 includes a first rotating rod 301 and a second rotating rod 302. The first rotating rod 301 is fixedly connected to the bottom of the rod body 208, and the second rotating rod 302 is fixedly connected to the bottom of the inner shell 104. A moving plate 3011 is sleeved on the surfaces of the first rotating rod 301 and the second rotating rod 302. The bottom of the moving plate 3011 is fixedly installed with an upper die part 3012 that penetrates to the bottom of the outer shell 101. A collar 305 is sleeved on the surface of the first rotating rod 301, and a clamping part 306 is fixedly installed inside the collar 305. Vertical grooves 303 and inclined grooves 304 that communicate with each other are formed on the surface of the first rotating rod 301. Both the vertical groove 303 and the inclined groove 304 are used for clamping and sliding in cooperation with the clamping part 306. The rotation of the rod body 208 will drive the first rotating rod 301 to rotate synchronously. The rotation of the first rotating rod 301 will realize the longitudinal change of the clamping part 306 through the design of the vertical groove 303 and the inclined groove 304. Among them, the clamping part 306, the collar 305 and the moving plate 3011 move synchronously, and the second rotating rod 302 will guide the movement of the moving plate 3011 and the upper die part 3012.

[0052] Reference Figure 6 , Figure 11 , Figure 12 , support rings 307 are sleeved on the surfaces of the first rotating rod 301 and the second rotating rod 302. The support ring 307 on the surface of the first rotating rod 301 is rotatably connected to the first rotating rod 301 through a bearing, and the support ring 307 on the surface of the second rotating rod 302 is fixedly connected to the second rotating rod 302. Earmuffs 308 are fixedly installed on both sides of the support ring 307. A second guide rod 309 fixedly connected to the top of the moving plate 3011 is slidably connected inside the earmuff 308. A second spring 3010 is sleeved on the surface of the second guide rod 309. The two ends of the second spring 3010 are fixedly connected to the moving plate 3011 and the earmuff 308 respectively. When the moving plate 3011 moves on the surfaces of the first rotating rod 301 and the second rotating rod 302, through the setting of the support ring 307, the second spring 3010 will be contracted, and the second guide rod 309 supports the second spring 3010.

[0053] Reference Figure 1 , Figure 13 , Figure 14, the lower die assembly 4 includes a base 401. At both ends inside the base 401, lower die parts 402 are respectively provided. The two lower die parts 402 are symmetrically designed. On one side of the bottom of the lower die part 402, a convex block 403 is integrally formed. Inside the convex block 403, an inner rod 404 rotatably connected to the base 401 is fixedly sleeved. On the front side of the lower die part 402, a first fixing part 405 is fixedly installed. At both ends of the front side of the base 401, second fixing parts 406 are fixedly installed. A tension spring 407 is mutually sleeved between the first fixing part 405 and the second fixing part 406. The lower die part 402 will realize rotational adjustment inside the base 401 through the inner rod 404 and the convex block 403. During the rotation of the lower die part 402, the first fixing part 405 will be driven to move, causing the contraction or extension of the tension spring 407. The tension spring 407 facilitates the lower die part 402 to return to the initial position.

[0054] Reference Figure 13 , Figure 14 , Figure 15 , on one side of the top of the lower die part 402, a first baffle 408 is fixedly installed. On the rear side of the top of the base 401, a second baffle 4013 is fixedly installed. At both ends of the top of the base 401, first side plates 409 are fixedly installed. On the top of the first side plates 409, second side plates 4010 are fixedly installed. On both sides of the outer shell 101, second sliders 4012 are fixedly installed. On one side of the second side plates 4010, a second chute 4011 for the second slider 4012 to slide is provided. The first baffle 408 and the second baffle 4013 will realize the limitation of the sheet material on the top of the lower die part 402. Among them, the sliding connection between the second slider 4012 and the second chute 4011 facilitates the movement guiding of the outer shell 101 between the second side plates 4010.

[0055] Brief description of the usage process: When using the shrapnel forming die and process, the operator first disassembles the mounting plate 103, inserts the mounting structure of the external cylinder into the top cover 102 and tightly installs it with the mounting plate 105. Then, place the sheet to be formed on the lower die part 402, where the first baffle 408 and the second baffle 4013 have the effect of limiting the sheet. During use, the operation of the external cylinder will drive the outer shell 101 and the inner shell 104 to move uniformly. Among them, the outer shell 101 first contacts the first side plate 409 and stays in place due to the limiting extrusion. At this time, the inner shell 104 will continue to move downward inside the outer shell 101, and with the continuous drive of the external cylinder, the inner shell 104, the moving plate 3011 and the upper die part 3012 will continue to move downward. At this time, the rotating gear 202 will engage with the rack 201 and realize its rotation. In the one-way engagement of the outer ratchet ring 205 and the inner ratchet ring 204, the rotation of the rotating gear 202 can only drive the first rod 203 to rotate synchronously in the counterclockwise direction, while in the clockwise rotation of the rotating gear 202, it cannot drive the first rod 203 to rotate. Subsequently, the rotation of the first rod 203 will drive the first bevel gear 206 to rotate. Among them, the rotation of the first bevel gear 206 will drive the second bevel gear 207 and the second rod 208 to rotate. The rotation of the second rod 208 will drive the first rotating rod 301 to rotate synchronously. The rotation of the first rotating rod 301 will realize the longitudinal change of the clamping part 306 through the design of the vertical groove 303 and the inclined groove 304. Among them, the clamping part 306, the collar 305 and the moving plate 3011 move synchronously. The second rotating rod 302 will guide the movement of the moving plate 3011 and the upper die part 3012, and the movement of the moving plate 3011 and the upper template is a reciprocating motion. At the same time, when the moving plate 3011 moves on the surfaces of the first rotating rod 301 and the second rotating rod 302, through the setting of the support ring 307, the second spring 3010 will be contracted, and the guide rod 309 supports the second spring 3010. The upper die part 3012 will gradually bend the sheet. Until it contacts the lower die part 402, the lower die part 402 will realize the rotational adjustment inside the base 401 through the inner rod 404 and the convex block 403. Among them, during the rotation of the lower die part 402, it will drive the first fixing part 405 to move, causing the contraction or extension of the tension spring 407. The tension spring 407 facilitates the lower die part 402 to return to the initial position. Through this setting, the reciprocating motion of the upper die part 3012 can gradually apply a deforming force to the sheet. This behavior is different from the resilience brought by a one-time bend. Its repeated bending can effectively reduce the appearance of springback stress. When the sheet is applied with a deforming force each time, a springback space for releasing stress will be left for it, and then a deforming force will be applied again. This is repeated until the upper die part 3012 contacts the lower die part 402. At this time, the bending of the sheet will be completed and a shrapnel will be formed.Through this setting, an efficient forming effect of the shrapnel will be achieved, the uniformity of the forming quality of the shrapnel in the workshop batches will be increased, the forming quality of the shrapnel will be effectively improved, and the structure is simple to operate. Its reciprocating movement speed can be determined by the driving speed of the external cylinder, making it flexible to use. At the same time, it also differentiates from the situation in some current workshops where the shrapnel is bent multiple times or excessively bent to ensure the bending angle of the shrapnel. This situation further ensures the yield rate of the formed shrapnel.

[0056] This specific embodiment is only an explanation of the present invention and is not a limitation thereof. Those skilled in the art can make modifications to this embodiment without creative contributions according to their needs after reading this specification, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A shrapnel forming die, comprising a housing assembly (1), characterized in that: The housing assembly (1) includes a housing (101), a top cover (102) is provided at the top of the housing (101), an inner housing (104) is provided inside the housing (101), a linkage assembly (2) is provided inside the housing (101), the linkage assembly (2) includes a rack (201), the rack (201) is fixedly connected to the rear side inside the housing (101), a rotating gear (202) penetrating through the front and rear sides of the inner housing (104) is provided on the inner side of the inner housing (104), a moving assembly (3) is provided at the bottom of the inner housing (104), and a lower die assembly (4) is provided at the bottom of the housing (101).

2. The shrapnel forming die according to claim 1, characterized in that: Mounting plates one (103) are fixedly installed at the top of both sides of the housing (101) and the bottom of both sides of the top cover (102), adjacent two of the mounting plates one (103) are bolted to each other, a mounting plate two (105) is fixedly installed at the top of the inner housing (104), slider one (106) is fixedly installed on both sides of the inner housing (104), and a chute one (107) for sliding cooperation with the slider one (106) is provided inside the housing (101).

3. The shrapnel forming die according to claim 2, wherein: Guide rods one (108) penetrating through the top of the top cover (102) are fixedly installed on both sides of the top of the inner housing (104), the guide rods one (108) are slidably connected to the top cover (102), a spring one (109) is sleeved on the surface of the guide rods one (108), both ends of the spring one (109) are fixedly connected to the inner housing (104) and the top cover (102) respectively, and a limiting block (1010) is fixedly installed at the top of the guide rods one (108).

4. A shrapnel forming die according to claim 1, characterized in that: An outer ratchet ring (205) is fixedly sleeved inside the rotating gear (202), an inner ratchet ring (204) is engaged inside the outer ratchet ring (205), and a rod one (203) rotatably connected to the inside of the inner housing (104) is fixedly sleeved inside the inner ratchet ring (204).

5. The shrapnel forming die according to claim 4, wherein: A bevel gear one (206) is fixedly installed at one end of the rod one (203), a bevel gear two (207) is engaged on the surface of the bevel gear one (206), a rod two (208) penetrating through the bottom of the inner housing (104) is fixedly sleeved inside the bevel gear two (207), and the rod two (208) is rotatably connected to the inner housing (104).

6. The shrapnel forming die according to claim 5, wherein: The moving component (3) includes a first rotating rod (301) and a second rotating rod (302). The first rotating rod (301) is fixedly connected to the bottom of the second rod body (208). The second rotating rod (302) is fixedly connected to the bottom of the inner shell (104). A moving plate (3011) is sleeved on the surfaces of the first rotating rod (301) and the second rotating rod (302). A top die member (3012) penetrating through the bottom of the outer shell (101) is fixedly installed at the bottom of the moving plate (3011). A collar (305) is sleeved on the surface of the first rotating rod (301). A clamping member (306) is fixedly installed inside the collar (305). Vertical grooves (303) and inclined grooves (304) communicating with each other are formed on the surface of the first rotating rod (301). Both the vertical grooves (303) and the inclined grooves (304) are used for clamping and sliding in cooperation with the clamping member (306).

7. A shrapnel forming die according to claim 7, characterized in that: Support rings (307) are sleeved on the surfaces of both the first rotating rod (301) and the second rotating rod (302). The support ring (307) on the surface of the first rotating rod (301) is rotatably connected to the first rotating rod (301) through a bearing. The support ring (307) on the surface of the second rotating rod (302) is fixedly connected to the second rotating rod (302). Ear plates (308) are fixedly installed on both sides of the support ring (307). A second guide rod (309) fixedly connected to the top of the moving plate (3011) is slidably connected inside the ear plate (308). A second spring (3010) is sleeved on the surface of the second guide rod (309). Both ends of the second spring (3010) are fixedly connected between the moving plate (3011) and the ear plate (308).

8. A shrapnel forming die according to claim 1, characterized in that: The lower die component (4) includes a base (401). Lower die members (402) are respectively arranged at both ends inside the base (401). The two lower die members (402) are symmetrically designed. A convex block (403) is integrally formed on one side of the bottom of the lower die member (402). An inner rod (404) rotatably connected to the base (401) is fixedly sleeved inside the convex block (403). A first fixing member (405) is fixedly installed on the front side of the lower die member (402). First fixing members (406) are fixedly installed at both ends of the front side of the base (401). A tension spring (407) is sleeved between the first fixing member (405) and the first fixing members (406).

9. A shrapnel forming die according to claim 8, characterized in that: A first baffle (408) is fixedly installed on one side of the top of the lower die member (402). A second baffle (4013) is fixedly installed on the rear side of the top of the base (401). First side plates (409) are fixedly installed at both ends of the top of the base (401). Second side plates (4010) are fixedly installed on the tops of the first side plates (409). Second sliders (4012) are fixedly installed on both sides of the outer shell (101). A second chute (4011) for sliding in cooperation with the second slider (4012) is formed on one side of the second side plate (4010).

10. According to the elastomeric sheet forming die and process described in claim 1, 1. The operator first connects and fastens the required parts of the housing assembly (1) to the external cylinder, and then places the sheet to be formed on the lower die assembly (4). During use, the operation of the external cylinder will drive the housing assembly (1), the linkage assembly (2), and the moving assembly (3) to move uniformly.

2. During operation, the housing assembly (1) first contacts the lower die assembly (4) and is subjected to limiting extrusion. At this time, the linkage assembly (2) and the moving assembly (3) will continue to move downward, while the housing assembly (1) will remain in place. The linkage assembly (2) will achieve its own driving operation by moving inside the housing assembly (1) and drive the moving assembly (3) to move to achieve its reciprocating movement.

3. During the reciprocating movement brought by the moving assembly (3), a deforming force will be gradually applied to the sheet. Each time the sheet is subjected to the deforming force, a springback space for stress release will be left for it, and then the deforming force will be applied again. This process will be repeated until the moving assembly (3) contacts the lower die assembly (4), at which time the bending of the sheet will be completed and a spring piece will be formed.

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