A continuous stamping die and an insert processing method

Abstract

The present invention provides a continuous stamping die and a method for processing inserts. Among them, the continuous stamping die is provided with the following according to the product processing stations: a first trimming mechanism for forming a first trimming opening and a first workpiece; a first cold extrusion forming mechanism for extruding the first workpiece to deform and form a first bump and a second bump; a first punching mechanism for punching a first punching hole, and the first punching hole corresponds to the first trimming opening; a second punching mechanism for punching a second punching hole, and an insert body is formed between the two second punching holes; a chamfering mechanism for punching a chamfer, and the chamfer is located on the side of the insert body away from the first workpiece; a blanking mechanism for forming the insert. To achieve the direct processing of products with the first bump and the second bump on the upper and lower surfaces, instead of pre-processing the strip into a strip with the first bump and the second bump on the upper and lower surfaces and then forming the insert through manual intervention, reducing labor costs and improving the production efficiency of products.

Description

Technical Field

[0001] The present invention relates to the technical field of metal processing techniques, and particularly to a continuous stamping die and a method for processing inserts.

Background Art

[0002] As is well known, the inserts used for inserting into sockets on products such as plugs and chargers are generally flat, and bumps are formed on the upper and lower surfaces of some inserts, as Figure 16 shown. Currently, inserts with bumps on the upper and lower surfaces are generally formed by a multi-step cold heading and punching process. However, in this way, after the bumps on the upper and lower surfaces are formed, punching is performed, so that during the processing of the inserts with bumps on the upper and lower surfaces, operators need to transfer the semi-finished products to the punching equipment, increasing labor costs and affecting the production efficiency of the products.

[0003] Therefore, the prior art needs to be improved and developed.

Summary of the Invention

[0004] The purpose of the present invention is to provide a method for processing inserts and a stamping die, which are used to solve the problems of increased labor costs caused by manual intervention during the processing of inserts with bumps on the upper and lower surfaces and affecting production efficiency.

[0005] The technical solution of the present invention is as follows:

[0006] On the one hand, the present invention provides a continuous stamping die for processing a strip into inserts, characterized in that the continuous stamping die includes an upper die device and a lower die device, and the upper die device and the lower die device are sequentially provided according to the product processing sequence with:

[0007] A first trimming mechanism for stamping the strip to form a first trimming opening on the strip, and a first workpiece is formed between the two first trimming openings;

[0008] A first cold extrusion forming mechanism for extruding the first workpiece to form a first bump and a second bump on the upper and lower surfaces of the strip, and the first bump and the second bump are located at one end of the first workpiece;

[0009] A first flattening mechanism for flattening the upper and lower surfaces of the first workpiece;

[0010] A second trimming mechanism for stamping the first workpiece to form a second workpiece with a second trimming opening on the strip;

[0011] A first punching mechanism for punching the strip with the second workpiece to form a first punching hole on the strip, the first punching hole is located on one side of the second workpiece, and the position of the first punching hole corresponds to the position of the first trimming opening;

[0012] A second punching mechanism for punching a strip with a first punch to form a second punch on the strip, the second punch being located on a side of the first punch away from the second workpiece, an insert body being formed between the two second punches, and the width of the second punch being greater than the width of the insert body;

[0013] A chamfering mechanism for punching a strip with a second punch to form a chamfer on the strip, the chamfer being located on a side of the insert body away from the second workpiece;

[0014] A blanking mechanism for punching the four ends of the insert body to process the strip with a chamfer to obtain an insert.

[0015] Further, the continuous stamping die further includes: a second cold extrusion forming mechanism and a second flattening mechanism disposed on a side of the first flattening mechanism away from the first cold extrusion forming mechanism, the second flattening mechanism being located on a side of the second trimming mechanism away from the second cold extrusion forming mechanism, the second cold extrusion forming mechanism having the same structure as the first cold extrusion forming mechanism, and the second flattening mechanism having the same structure as the first flattening mechanism.

[0016] Further, the upper die device includes: an upper die base, an upper cushion block, an upper clamping plate, a stop plate, and a stripper plate sequentially arranged from top to bottom; the lower die device includes: a lower die plate, a lower cushion block, and a lower die base sequentially arranged from top to bottom; the first cold extrusion forming mechanism includes: a first punching rod disposed on an upper cushion plate, a first punching head movably disposed on the lower die plate, a first limiting block and a second limiting block disposed on the stripper plate, and a third limiting block and a fourth limiting block disposed on the lower die plate; the first limiting block is located on a side of the second limiting block away from the first punching rod, the third limiting block is disposed corresponding to the position of the first limiting block, and the second limiting block is disposed corresponding to the position of the fourth limiting block;

[0017] A material channel for accommodating the strip is formed between the stripper plate and the lower die plate. The first limiting block is provided with a first convex block accommodating groove communicating with the material channel on a side close to the second limiting block, the third limiting block is provided with a second convex block accommodating groove communicating with the material channel on a side close to the fourth limiting block, and the second limiting block and the fourth limiting block cooperate to form a limiting cavity for accommodating the insert; the first punching head is provided with a first extrusion rod on a side away from the first punching rod; during stamping, the first punching rod moves downward and pushes the first punching head to move close to the material channel, and the first extrusion rod partially extends into the limiting cavity to extrude the first workpiece.

[0018] Further, a first inclined surface is provided on a side of the first punching rod close to the first punching head, and a second inclined surface is formed on the first punching head and is fitted with the first inclined surface.

[0019] Further, the first cold extrusion forming mechanism further includes a first reset mechanism disposed on the lower template, and the first reset mechanism is used to pull the first punching head backward.

[0020] Further, the first reset mechanism includes a first screw rod and a first elastic member. The lower template is provided with a first accommodating groove at the rear side of the first punching head and a limiting wall between the first accommodating groove and the first punching head. The nut on the first screw rod is placed in the first accommodating groove, and the other end passes through the limiting wall and is connected to the first punching head. The first elastic member is located between the nut of the first screw rod and the limiting wall.

[0021] Further, both the first flattening mechanism and the second flattening mechanism include: a second punching rod disposed on the upper cushion block, a fifth limiting block disposed on the stripping plate, and a sixth limiting block disposed on the lower template; the fifth limiting block and the sixth limiting block are arranged corresponding to the position of the first workpiece, a through hole is formed on the fifth limiting block, and a part of the second punching rod is placed in the through hole.

[0022] A first limiting opening is formed at the bottom of the second punching rod, and the first limiting opening and the fifth limiting block cooperate to form a first shaping opening; a second shaping opening is formed on the sixth limiting block.

[0023] In one aspect, the present invention further provides a method for processing inserts, which is applicable to the continuous stamping die described above. The method for processing inserts includes, according to the product processing sequence:

[0024] Stamping the strip by the first trimming mechanism to form a first trimming opening on the strip, and a first workpiece is formed between the two first trimming openings;

[0025] Stamping the first workpiece by the first cold extrusion forming mechanism to form a first convex block and a second convex block on the upper and lower surfaces of the strip, and the first convex block and the second convex block are located at one end of the first workpiece;

[0026] Flattening the upper and lower surfaces of the first workpiece by the first flattening mechanism;

[0027] Stamping the first workpiece by the second trimming mechanism to form a second workpiece with a second trimming opening on the strip;

[0028] Stamping the strip with the second workpiece by the first punching mechanism to form a first punching hole on the strip. The first punching hole is located on one side of the second workpiece, and the position of the first punching hole corresponds to the position of the first trimming opening;

[0029] The strip with the first punching is punched by a second punching mechanism to form a second punching on the strip. The second punching is located on the side of the first punching away from the second workpiece. An insert body is formed between the two second punchings, and the width of the second punching is greater than the width of the insert body;

[0030] The strip with the second punching is punched by a chamfering mechanism to form a chamfer on the strip. The chamfer is located on the side of the insert body away from the second workpiece;

[0031] The four ends of the insert body are punched by a blanking mechanism to process the strip with the chamfer to obtain an insert.

[0032] Further, after punching by the first flattening mechanism, the insert processing method further includes: deforming the first workpiece by punching with a second cold extrusion forming mechanism;

[0033] After punching by the second edge trimming mechanism, the insert processing method further includes: further shaping the surface of the second workpiece by a second flattening mechanism.

[0034] Further, after punching by the first cold extrusion forming mechanism, the insert processing method further includes: moving the first punch head located on the lower template away from the strip in a direction away from the strip by a first reset mechanism.

[0035] The beneficial effect of the present invention is that: compared with the prior art, by configuring a first cold extrusion forming mechanism in the continuous stamping die, and processing through the continuous stamping die, products with first bumps and second bumps on the upper and lower surfaces can be processed respectively, without pre-processing the strip into a strip with first bumps and second bumps on the upper and lower surfaces, and then transferring the strip to the equipment of the continuous stamping die for processing through manual intervention. Furthermore, labor costs can be reduced, and the production efficiency of products can be effectively improved.

Description of the Drawings

[0036] Figure 1 It is a three-dimensional view of the continuous stamping die of the present invention;

[0037] Figure 2 It is a schematic diagram of the internal mechanism of the continuous stamping die of the present invention;

[0038] Figure 3 It is a three-dimensional view of the first cold extrusion forming mechanism of the present invention;

[0039] Figure 4 It is an exploded view of the first cold extrusion forming mechanism of the present invention;

[0040] Figure 5 It is an exploded view of the first punch head of the present invention;

[0041] Figure 6Schematic diagram of the installation of the first cold extrusion forming mechanism in the continuous stamping die of the present invention;

[0042] Figure 7 Stereogram of the first flattening mechanism of the present invention;

[0043] Figure 8 Exploded view of the first flattening mechanism of the present invention;

[0044] Figure 9 Structural diagram of the first shaping mechanism of the present invention;

[0045] Figure 10 Flow chart of the method for processing the insert piece of the present invention;

[0046] Figure 11 Schematic diagram of the strip according to the processing sequence of the continuous stamping die of the present invention;

[0047] Figure 12 is Figure 11 Enlarged view of area A in;

[0048] Figure 13 is Figure 11 Enlarged view of area B in;

[0049] Figure 14 is Figure 11 Enlarged view of area C in;

[0050] Figure 15 is Figure 11 Enlarged view of area D in;

[0051] Figure 16 Stereogram of the insert piece.

Detailed implementation manners

[0052] The present invention will be further described below in conjunction with the drawings and the implementation manners.

[0053] Please refer to the attached Figures 1-9 , A continuous stamping die in an embodiment of the present invention is used to process a strip 100 into an insert piece 200.

[0054] The continuous stamping die includes an upper die device 30 and a lower die device 390. The upper die device 30 and the lower die device 390 are sequentially provided according to the product processing sequence with:

[0055] A first trimming mechanism 3, which is used to punch the strip 100 so that a first trimming opening 103 is formed on the strip 100, and a first workpiece 104 is formed between the two first trimming openings 103;

[0056] The first cold extrusion forming mechanism 4 is used to extrude the first workpiece 104 to form a first bump 105 and a second bump 106 on the upper and lower surfaces of the strip 100. The first bump 105 and the second bump 106 are located at one end of the first workpiece 104;

[0057] The first flattening mechanism 5 is used to flatten the upper and lower surfaces of the first workpiece 104;

[0058] The second trimming mechanism 7 is used to punch the first workpiece 104 to form a second workpiece 108 with a second trimming opening on the strip 100;

[0059] The first punching mechanism 12 is used to punch the strip 100 with the second workpiece 108 to form a first punching 110 on the strip 100. The first punching 110 is located on one side of the second workpiece 108, and the position of the first punching 110 corresponds to the position of the first trimming opening 103;

[0060] The second punching mechanism 14 is used to punch the strip 100 with the first punching 110 to form a second punching 109 on the strip 100. The second punching 109 is located on the side of the first punching 110 away from the second workpiece 108. An insert body 113 is formed between the two second punchings 109, and the width of the second punching 109 is greater than the width of the insert body 113;

[0061] The chamfering mechanism 15 is used to punch the strip 100 with the second punching 109 to form a chamfer 114 on the strip 100. The chamfer 114 is located on the side of the insert body 113 away from the second workpiece 108;

[0062] The blanking mechanism 19 is used to punch the positions of the four end feet of the insert body 113 to form an insert 200.

[0063] In the present invention, by configuring the first cold extrusion forming mechanism 4 in the continuous stamping die, through the processing of the continuous stamping die, it is possible to process a product with a first bump 105 and a second bump 106 on the upper and lower surfaces respectively, without pre-processing the strip 100 to have the first bump 105 and the second bump 106 on the upper and lower surfaces, and then manually transferring the strip 100 to the equipment of the continuous stamping die for processing. Furthermore, the labor cost can be reduced, and the production efficiency of the product can be effectively improved. In addition, through the first flattening mechanism 5, the deformed upper and lower surfaces of the first workpiece 104 after the first cold extrusion forming mechanism 4 forms the first bump 105 and the second bump 106 can be flattened, improving the accuracy of the first workpiece 104.

[0064] In one embodiment, the continuous stamping die further includes: a third trimming mechanism 1 and a third punching mechanism 2 disposed on a side of the first trimming mechanism 3 away from the first cold extrusion forming mechanism 4, and the third punching mechanism 2 is located on a side of the third trimming mechanism 1 away from the first trimming mechanism 3.

[0065] Among them, when the third trimming mechanism 1 performs stamping, the edges in the strip 100 are trimmed to form a third trimming opening 101, so as to keep the depth of the first trimming opening 103 obtained after the first trimming mechanism 3 performs stamping consistent later, that is, to ensure that the length of each first workpiece 104 is the same, so that the first bumps 105 and the second bumps 106 obtained by each stamping of the subsequent first cold extrusion forming mechanism 4 all have the same height, and the error between the produced products is reduced.

[0066] When the third punching mechanism 2 performs stamping, a third punching 102 is formed in the strip 100, so that when the upper die device 30 and the lower die device 390 are closed to clamp the strip 100, a positioning function can be provided for the subsequent strip 100 and it is convenient for subsequent processing of the first punching 110.

[0067] Specifically, the upper die device 30 includes: an upper die base 310, an upper cushion block 320, an upper clamping plate 330, a stop plate 340 and a stripper plate 350 which are arranged in sequence from top to bottom. The lower die device 390 includes: a lower template 360, a lower cushion block 370 and a lower die base 380 which are arranged in sequence from top to bottom. This is a well-known technology in the public and will not be elaborated here one by one.

[0068] The continuous stamping die further includes: a second cold extrusion forming mechanism 5 and a second flattening mechanism 8 disposed on a side of the first flattening mechanism 5 away from the first cold extrusion forming mechanism 4, and the second flattening mechanism 8 is located on a side of the second trimming mechanism 7 away from the second cold extrusion forming mechanism 5. The second cold extrusion forming mechanism 5 has the same structure as the first cold extrusion forming mechanism 4, and the second flattening mechanism 8 has the same structure as the first flattening mechanism 5.

[0069] Among them, since the first flattening mechanism 5 is used to flatten the first workpiece 104 on one side of the first bump 105, certain deformation will occur to the first bump 105, the second bump 106 and the first workpiece 104. The second cold extrusion forming mechanism 5 is used to further shape the first bump 105 and the second bump 106. Then, the second trimming mechanism 7 is used for trimming to form a second workpiece 108, and the second flattening mechanism 8 is used to further shape the second workpiece 108 to improve the product precision.

[0070] In one embodiment, the continuous stamping die further includes: a third cold extrusion forming mechanism 9 and a first shaping mechanism 10 disposed between the second flattening mechanism 8 and the second trimming mechanism 7. The first shaping mechanism 10 is disposed close to the second trimming mechanism 7, and the third cold extrusion forming mechanism 9 has the same structure as the first cold extrusion forming mechanism 4. The third cold extrusion forming mechanism 9 and the first shaping mechanism 10 shape the second workpiece 108, the first bump 105, and the second bump 106 to further improve the product accuracy.

[0071] In one embodiment, the continuous stamping die further includes a fourth punching mechanism 11 located on the side of the second punching 109 away from the blanking mechanism 19. When the fourth punching mechanism 11 punches, a fourth punching 107 is formed in the strip 100, so as to facilitate positioning of the strip 100 by the positioning rod 20 after the first punching 110 is formed subsequently, for subsequent punching, blanking, etc.

[0072] In one embodiment, the continuous stamping die further includes a fourth trimming mechanism 13 located between the first shaping mechanism 10 and the chamfering mechanism 15. The fourth trimming mechanism 13 punches the second workpiece 108 to form a base 202 having a fourth trimming opening 111.

[0073] In one embodiment, the continuous stamping die further includes a fifth punching mechanism 17 located between the blanking mechanism 19 and the chamfering mechanism 15. The fifth punching mechanism 17 punches at a position corresponding to the first punching 110 to form a fifth punching 112, so as to reduce the connection between the bases 202 for subsequent blanking.

[0074] In one embodiment, the continuous stamping die further includes: a plurality of positioning rods 20 disposed on the upper die device 30. The plurality of positioning rods 20 are spaced apart on the upper die device 30 and are used to position the overall strip 100 in the continuous stamping die when the upper die device 30 and the lower die device 390 clamp the strip 100, so as to facilitate the processing of each mechanism and improve the product accuracy.

[0075] In one embodiment, the continuous stamping die further includes a first burnishing mechanism 16 and a second burnishing mechanism 18. The first burnishing mechanism 16 is located between the fifth punching mechanism 17 and the fourth trimming mechanism 13, and the second burnishing mechanism 18 is located between the fifth punching mechanism 17 and the blanking mechanism 19. The first burnishing mechanism 16 is used to punch the peripheral side wall of the base 202 to obtain a smooth side wall. The second burnishing mechanism 18 is used to punch the side wall of the fifth punching 112 to remove burrs and obtain a smooth side wall.

[0076] Specifically, refer to the attached Figure 3 and the attached Figure 4, the first cold extrusion forming mechanism 4 includes: a first punching rod 43 disposed on the upper cushion block 320, a first punching head 46 movably disposed on the lower template 360, a first limiting block 41 and a second limiting block 42 disposed on the stripping plate 350, and a third limiting block 44 and a fourth limiting block 45 disposed on the lower template 360. The first limiting block 41 is located on the side of the second limiting block 42 away from the first punching rod 43, the third limiting block 44 is disposed corresponding to the position of the first limiting block 41, and the second limiting block 42 is disposed corresponding to the position of the fourth limiting block 45.

[0077] A material channel (not shown in the figure) for accommodating the strip 100 is formed between the stripping plate 350 and the lower template 360. The first limiting block 41 is provided with a first convex block accommodating groove 411 communicating with the material channel on the side close to the second limiting block 42. The third limiting block 44 is provided with a second convex block accommodating groove 441 communicating with the material channel on the side close to the fourth limiting block 45. The second limiting block 42 and the fourth limiting block 45 cooperate to form a limiting cavity 48 for accommodating the insert piece 200.

[0078] The first punching head 46 is provided with a first extrusion rod 460 on the side away from the first punching rod 43. During punching, the first punching rod 43 moves downward and pushes the first punching head 46 to move close to the material channel, and at least part of the first extrusion rod 460 is placed in the limiting cavity 48 to extrude the strip 100 to deform.

[0079] During punching, the upper die device 30 moves downward as a whole, cooperates with the lower template 360 to pre-press the strip 100 in advance, and enables the limiting cavity 48 formed by the cooperation of the second limiting block 42 and the fourth limiting block 45 to limit the first workpiece 104. Then the upper die base 310, the upper cushion block 320, and the upper clamping plate 330 continue to move downward, that is, drive the first punching rod 43 to move downward, and push the first punching head 46 to move close to the strip 100, so that the first extrusion rod 460 is placed in the limiting cavity 48 and moves along the limiting cavity 48 to extrude the first workpiece 104. Cooperating with the first convex block accommodating groove 411 and the second convex block accommodating groove 441, the first workpiece 104 can be extruded and shortened by the first extrusion rod 460, and the redundant material after shortening is extruded into the first convex block accommodating groove 411 and the second convex block accommodating groove 441, thereby extruding and forming the second convex block 106 and the first convex block 105. And the sizes of the first convex block accommodating groove 411 and the second convex block accommodating groove 441 are substantially the same as the material of the first workpiece 104 that is extruded and shortened, so as to better form the first convex block 105 and the second convex block 106.

[0080] Refer to the appendix Figure 6, in one embodiment, when the first stamping rod 43 moves downward, it can push the first stamping head 46 to move closer to the strip 100. On the side of the first stamping rod 43 close to the first stamping head 46 is a first inclined surface 431, and a second inclined surface 461 that fits the first inclined surface 431 is formed on the first stamping head 46.

[0081] In one embodiment, the first cold extrusion forming mechanism 4 further includes a first reset mechanism 49 disposed on the lower template 360. The first reset mechanism 49 is used to pull the first stamping head 46 to move backward.

[0082] Specifically, in one embodiment, the first reset mechanism 49 includes a first screw rod 492 and a first elastic member 491. The lower template 360 is provided with a first accommodation groove (not shown in the figure) at the rear side of the first stamping head 46 and a limiting wall 47 between the first accommodation groove and the first stamping head 46. The nut on the first screw rod 492 is placed in the first accommodation groove, and the other end passes through the limiting wall 47 and is connected to the first stamping head 46. The first elastic member 491 is located between the nut of the first screw rod 492 and the limiting wall 47. By using the limiting wall 47, when the first stamping head 46 is not affected by the acting force of the first stamping rod 43, it can automatically move in the direction of the limiting wall 47, realizing the reset of the first stamping head 46 to the position in the unprocessed state.

[0083] Refer to the appendix Figure 5 , in one embodiment, the first stamping head 46 includes a first pushing block 462, a seventh limiting block 465 detachably disposed on the first pushing block 462, and a first extrusion rod 460 detachably disposed on the seventh limiting block 465.

[0084] Specifically, a first limiting groove 464 is formed on the first pushing block 462. A first sliding groove 463 is formed at the end of the first limiting groove 464. A first sliding block 466 is formed at the end of the seventh limiting block 465. The first limiting block 41 is installed on the first pushing block 462 by placing the first sliding block 466 in the first sliding groove 463. The first extrusion rod 460 passes through a first limiting through hole 4651. A first limiting convex block 467 is provided at the position of the first extrusion rod 460 close to the first pushing block 462. By inserting the first extrusion rod 460 into the first limiting through hole 4651 and using the first limiting convex block 467 for limiting, the first extrusion rod 460 can be installed on the seventh limiting block 465. The first extrusion rod 460 includes an extrusion end 469 and a limiting portion 468 connected to the extrusion end 469. The thickness of the extrusion end 469 is less than the thickness of the limiting portion 468. The size of the limiting portion 468 fits the size of the first limiting through hole 4651 and is connected to the first limiting convex block 467. In this way, it is convenient to replace the first extrusion rod 460; and different thickness or length first extrusion rods 460 can be replaced according to the thickness of different strips 100 or according to the heights of different first convex blocks 105 and second convex blocks 106, etc.

[0085] Refer to the attached Figure 7 and the attached Figure 8 In one embodiment, both the first flattening mechanism 5 and the second flattening mechanism 8 include: a second stamping rod 51 disposed on the upper cushion block 320, a fifth limiting block 52 disposed on the stripper plate 350, and a sixth limiting block 53 disposed on the lower template 360. The fifth limiting block 52 and the sixth limiting block 53 are arranged corresponding to the position of the first workpiece 104. A through hole 521 is formed in the fifth limiting block 52, and a part of the second stamping rod 51 is placed in the through hole 521. Therefore, during stamping, the fifth limiting block 52 and the sixth limiting block 53 can act on the first workpiece 104 simultaneously to flatten the upper and lower surfaces of the first workpiece 104 into a plane.

[0086] In one embodiment, for these processing station mechanisms such as the third trimming mechanism 1, the third punching mechanism 2, the first trimming mechanism 3, the second trimming mechanism 7, the fourth punching mechanism 11, the fourth trimming mechanism 13, the first punching mechanism 12, the second punching mechanism 14, the first burnishing mechanism 16, the second burnishing mechanism 18, the chamfering mechanism 15, and the blanking mechanism 19, respective stamping rods are provided on the upper cushion block 320, sixth limiting blocks 53 for accommodating and limiting the up and down movement of the stamping rods are provided on the stripper plate 350, and limiting blocks for cooperating with the stamping rods are provided on the lower template 360 to realize the work of each station. These trimming, punching, blanking, and chamfering mechanisms 15 are all prior arts, and manufacturers can set them according to the shape of the product, which will not be elaborated here one by one.

[0087] Refer to the attached Figure 9 In one embodiment, the first shaping mechanism 10 includes a first stamping block 1001 disposed on the upper cushion block 320 and a second stamping block 1002 disposed on the lower template 360; a first shaping groove for shaping the first convex block 105 is formed in the first stamping block 1001, and a second shaping groove 1003 for shaping the second convex block 106 is formed in the second stamping block 1002. During stamping, the shaping of the first convex block 105 and the second convex block 106 can be realized.

[0088] Refer to the attached Figures 10-16 Based on the above continuous stamping die, the present invention also provides a method for processing the insert piece 200, which includes the following processing steps according to the product processing sequence:

[0089] S1. The third trimming mechanism 1 punches the strip 100 to form a third trimming opening 101 on the strip 100, removing the excess edge material, so as to keep the depth of the first trimming opening 103 obtained when the first trimming mechanism 3 punches the strip 100 consistent, that is, to ensure that the length of each first workpiece 104 is the same, and to keep the first bumps 105 and the second bumps 106 obtained by each punch of the subsequent first cold extrusion forming mechanism 4 at the same height, reducing the error between the produced products.

[0090] S2. The third punching mechanism 2 punches the strip 100 to form a third punching 102 on the strip 100, so as to position the strip 100 through the limiting rod subsequently, and to facilitate the processing of the first punching 110 subsequently. Among them, the processing sequence of step S1 and step S2 can be changed, which is not limited here.

[0091] S3. The first trimming mechanism 3 punches the strip 100 with the third trimming opening 101 to form a first trimming opening 103 on the strip 100, removing the excess edge material. Among them, a first workpiece 104 is formed between the two first trimming openings 103, so as to facilitate subsequent extrusion deformation to form the first bump 105 and the second bump 106.

[0092] S4. The first cold extrusion forming mechanism 4 punches the first workpiece 104 to form a first bump 105 and a second bump 106 on the upper and lower surfaces of the strip 100. The first bump 105 and the second bump 106 are located at one end of the first workpiece 104;

[0093] S5. The first flattening mechanism 5 punches the upper and lower surfaces of the first workpiece 104, making the upper and lower surfaces of the first workpiece 104 flat, so as to flatten the deformed surfaces generated in the previous step and improve the product accuracy.

[0094] S6. The second cold extrusion forming mechanism 5 punches the first workpiece 104 to cause deformation, further shaping the first bump 105 and the second bump 106.

[0095] S7. The second trimming mechanism 7 punches the first workpiece 104 to form a second workpiece 108 with a second trimming opening on the strip 100.

[0096] S8. The second flattening mechanism 8 further shapes the surface of the second workpiece 108 to improve the product accuracy.

[0097] S9. The third cold extrusion forming mechanism 9 punches the second workpiece 108 to further shape the first bump 105 and the second bump 106.

[0098] S10. The first shaping mechanism 10 punches to further shape the first bump 105 and the second bump 106.

[0099] S11. Punch the strip 100 through the fourth punching mechanism 11 to form a fourth punching 107 on the strip 100, so that after the first punching 110 is formed subsequently, the positioning rod 20 can be used to position the strip 100, facilitating subsequent punching and blanking, etc.

[0100] S12. Punch the strip 100 with the second workpiece 108 through the first punching mechanism 12 to form a first punching 110 on the strip 100. The first punching 110 is located on one side of the second workpiece 108, and the position of the first punching 110 corresponds to the position of the first trimming edge 103.

[0101] S13. Punch the strip 100 with the first punching 110 through the second punching mechanism 14 to form a second punching 109 on the strip 100. The second punching 109 is located on the side of the first punching 110 away from the second workpiece 108. An insert body 113 is formed between the two second punchings 109, and the width of the second punching 109 is greater than the width of the insert body 113.

[0102] S14. Punch the second workpiece 108 through the fourth trimming mechanism 13 to form a base 202 with a fourth trimming edge 111.

[0103] S15. Punch the strip 100 with the second punching 109 through the chamfering mechanism 15 to form a chamfer 114 on the strip 100. The chamfer 114 is located on the side of the insert body 113 away from the base 202.

[0104] S17. Punch at the position corresponding to the first punching 110 through the fifth punching mechanism 17 to form a fifth punching 112, so as to reduce the connection between the bases 202 for subsequent blanking.

[0105] S18. Punch the side wall of the fifth punching 112 through the second burnishing mechanism 18 to achieve the effect of deburring and obtain a smooth side wall.

[0106] S19. Punch the four ends of the insert body 113 through the blanking mechanism 19 to process the strip 100 with the chamfer 114 to obtain the insert 200.

[0107] S19. Punch the four ends of the insert body 113 through the blanking mechanism 19 to process the strip 100 with the chamfer 114 to obtain the insert 200.

[0108] In this way, the strip 100 can be conveyed into the continuous stamping die of the present invention for processing, directly forming the insert piece 200 having the first bump 105 and the second bump 106 on the upper and lower surfaces respectively, without pre-processing the strip 100 into a strip having the first bump 105 and the second bump 106 on the upper and lower surfaces, and then transferring the strip 100 to the equipment of the continuous stamping die through manual intervention for processing. Therefore, the labor cost can be saved, and the production efficiency of the product can be effectively improved.

[0109] The above are only the embodiments of the present invention. It should be noted here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these all belong to the protection scope of the present invention.

Claims

1. A continuous stamping die for processing a strip into inserts, characterized in that, The continuous stamping die includes an upper die device and a lower die device. The upper die device and the lower die device are successively provided according to the product processing sequence with: A first trimming mechanism for stamping a strip to form a first trimming opening on the strip, and a first workpiece is formed between the two first trimming openings; A first cold extrusion forming mechanism for extruding the first workpiece to form a first bump and a second bump on the upper and lower surfaces of the strip. The first bump and the second bump are located at one end of the first workpiece; A first flattening mechanism for flattening the upper and lower surfaces of the first workpiece, including a second stamping rod, a fifth limiting block, and a sixth limiting block. The fifth limiting block and the sixth limiting block are arranged corresponding to the position of the first workpiece. A through hole is formed on the fifth limiting block, and a part of the second stamping rod is placed in the through hole; a first limiting opening is formed at the bottom of the second stamping rod, and the first limiting opening and the fifth limiting block cooperate to form a first shaping opening. A second shaping opening is formed on the sixth limiting block; A second trimming mechanism for stamping the first workpiece to form a second workpiece with a second trimming opening; A first punching mechanism for punching the strip with the second workpiece to form a first punching hole on the strip. The first punching hole is located on one side of the second workpiece, and the position of the first punching hole corresponds to the position of the first trimming opening; A second punching mechanism for punching the strip with the first punching hole to form a second punching hole on the strip. The second punching hole is located on the side of the first punching hole away from the second workpiece, and an insert body is formed between the two second punching holes. The width of the second punching hole is greater than the width of the insert body; A chamfering mechanism for punching the strip with the second punching hole to form a chamfer on the strip. The chamfer is located on the side of the insert body away from the second workpiece; A blanking mechanism for punching the four ends of the insert body to process the strip with the chamfer to obtain an insert.

2. The continuous stamping die according to claim 1, wherein The continuous stamping die further includes: a second cold extrusion forming mechanism and a second flattening mechanism arranged on the side of the first flattening mechanism away from the first cold extrusion forming mechanism. The second flattening mechanism is located on the side of the second trimming mechanism away from the second cold extrusion forming mechanism. The second cold extrusion forming mechanism has the same structure as the first cold extrusion forming mechanism, and the second flattening mechanism has the same structure as the first flattening mechanism.

3. The continuous stamping die according to claim 2, characterized in that, The upper die device includes: an upper die base, an upper cushion block, an upper clamping plate, a stop plate, and a stripper plate arranged successively from top to bottom; the lower die device includes: a lower template, a lower cushion block, and a lower die base arranged successively from top to bottom; the first cold extrusion forming mechanism includes: a first stamping rod arranged on the upper cushion plate, a first stamping head movably arranged on the lower template, a first limiting block and a second limiting block arranged on the stripper plate, and a third limiting block and a fourth limiting block arranged on the lower template; the first limiting block is located on the side of the second limiting block away from the first stamping rod, the third limiting block is arranged corresponding to the position of the first limiting block, and the second limiting block is arranged corresponding to the position of the fourth limiting block; A material stripping plate and a lower template form a material path for accommodating a strip. On one side of the first limiting block close to the second limiting block, a first convex block accommodating groove communicating with the material path is provided. On one side of the third limiting block close to the fourth limiting block, a second convex block accommodating groove communicating with the material path is provided. The second limiting block and the fourth limiting block cooperate to form a limiting cavity for accommodating an insert piece. On one side of the first punching head far from the first punching rod, a first extrusion rod is provided. During punching, the first punching rod moves downward and pushes the first punching head to move close to the material path, and a part of the first extrusion rod extends into the limiting cavity to extrude a first workpiece.

4. The continuous stamping die according to claim 3, characterized in that, On one side of the first punching rod close to the first punching head is a first inclined surface, and a second inclined surface matching the first inclined surface is formed on the first punching head.

5. The continuous stamping die according to claim 4, characterized in that, The first cold extrusion forming mechanism further includes a first reset mechanism arranged on the lower template, and the first reset mechanism is used to pull the first punching head to move backward.

6. The continuous stamping die according to claim 5, wherein, The first reset mechanism includes a first screw rod and a first elastic member. The lower template is provided with a first accommodating groove at the rear side of the first punching head and a limiting wall between the first accommodating groove and the first punching head. The nut on the first screw rod is placed in the first accommodating groove, and the other end passes through the limiting wall and is connected to the first punching head. The first elastic member is located between the nut of the first screw rod and the limiting wall.

7. A method for processing an insert piece, characterized in that, Applicable to the continuous punching die according to any one of claims 1-6, the insert piece processing method includes according to the product processing sequence: Stamping the strip by a first trimming mechanism to form a first trimming opening on the strip, and a first workpiece is formed between the two first trimming openings; Stamping the first workpiece by a first cold extrusion forming mechanism to form a first convex block and a second convex block on the upper and lower surfaces of the strip, and the first convex block and the second convex block are located at one end of the first workpiece; Flattening the upper and lower surfaces of the first workpiece by a first flattening mechanism; Stamping the first workpiece by a second trimming mechanism to form a second workpiece with a second trimming opening on the strip; Stamping the strip with the second workpiece by a first punching mechanism to form a first punching hole on the strip, the first punching hole is located on one side of the second workpiece, and the position of the first punching hole corresponds to the position of the first trimming opening; Stamping the strip with the first punching hole by a second punching mechanism to form a second punching hole on the strip, the second punching hole is located on the side of the first punching hole far from the second workpiece, an insert piece body is formed between the two second punching holes, and the width of the second punching hole is greater than the width of the insert piece body; Stamping the strip with the second punching hole by a chamfering mechanism to form a chamfer on the strip, and the chamfer is located on the side of the insert piece body far from the second workpiece; Stamping the four ends of the insert piece body by a blanking mechanism to process the strip with the chamfer to obtain an insert piece.

8. The method for processing the insert according to claim 7, wherein, After stamping by the first flattening mechanism, the insert piece processing method further includes: stamping the first workpiece by a second cold extrusion forming mechanism to cause deformation; After stamping by the second trimming mechanism, the insert piece processing method further includes: further shaping the surface of the second workpiece by a second flattening mechanism.

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