A high-precision indexing and piercing die mechanism

Abstract

The present application relates to the technical field of mould, especially to a high-precision indexing punching die mechanism, which comprises an upper die and a lower die, the lower die comprises a lower die base, an indexing mechanism arranged on the lower die base and driven by a top block of the upper die, and a profiling head rotated by the indexing mechanism, and punching holes for cooperating with punches are arranged on the profiling head, the indexing mechanism comprises a mounting seat fixed on the lower die base, a shaft rotatably arranged in the mounting seat, and an indexing rotating disc movably mounted on the mounting seat and driving the shaft to rotate, and the top block cooperates with the mounting indexing rotating disc to be mounted, the present application has the advantages that the indexing mechanism is arranged in the die, the indexing mechanism is used by cooperating with the opening and closing of the die, so that the punching efficiency of the die is improved, and the precision and quality of the punched part are ensured by cooperating with the precise limiting transmission.

Description

Technical Field

[0001] The present invention relates to the field of mold technology, and in particular to a high-precision indexing punching mold mechanism. Background Art

[0002] Molds are the various molds and tools used in industrial production to produce desired products through methods such as injection molding, blow molding, extrusion, die-casting, forging, smelting, and stamping. Simply put, a mold is a tool used to create a shaped object. This tool is composed of various parts, and different molds are made up of different parts. It primarily shapes the object by changing the physical state of the material being molded. It is often called the "mother of industry."

[0003] There is a stamping part with a truncated cone structure, which needs to be matched with holes punched around the outer wall. In order to facilitate the stamping of this structure, a dividing structure is used in conjunction with the mold for stamping. In the prior art, the application number is: 202122370802.X. The dividing device of the existing mold cannot guarantee the accuracy of rotation when used in conjunction with the mold, and this structure is relatively complex. Structures such as connecting rods are easily damaged during stamping, and the linkage is relatively poor. This mechanism cannot be used with existing stamping parts. Therefore, it is necessary to design a high-precision dividing punching mold mechanism to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-precision indexing punching die mechanism to overcome the above-mentioned deficiencies in the current prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A high-precision indexing punching die mechanism, which includes an upper die and a lower die, the upper die including an upper die base, an upper die plate arranged on the upper die base, a punch fixed in the upper die plate by a fixing member, and a top block arranged on the upper die base, the lower die including a lower die base, an indexing mechanism arranged on the lower die base and driven by the top block of the upper die, and a profiling head that rotates when the indexing mechanism rotates, and the profiling head is provided with a punching hole that cooperates with the punch punching, the indexing mechanism includes a mounting base fixed to the lower die plate, a shaft rod rotatably placed in the mounting base, and an indexing rotating disk movably mounted on the mounting base and driving the shaft rod to rotate, and the top block is installed in conjunction with the mounting indexing rotating disk.

[0007] Preferably, the rear surface of the mounting seat is provided with a dividing rotating disk groove for matching the dividing rotating disk, and rotation limit grooves are provided on both sides of the dividing rotating disk groove. The front bottom of the mounting seat is provided with an arc-shaped steep slope, and the arc-shaped steep slope is placed below the punch.

[0008] Preferably, the end of the indexing rotating disk is provided with a rotating rod for use with the top block, and the rotating rod is placed under the top block and fixedly connected to the rotating rod, the rotating rod is placed in the rotation limiting groove and is rotationally limited by the rotation limiting groove, the center of the indexing rotating disk is provided with a hook tooth groove for matching the shaft rod installation, the hook teeth of the hook tooth groove are all hooked outward, and a transmission head is provided at one end of the shaft rod, the transmission head is placed in the indexing rotating disk groove of the mounting seat, and is placed in the hook tooth groove of the indexing rotating disk for installation, the A groove is provided on the surface of the transmission head, and a rotatable limit block is installed on the groove. A spring mounting hole is provided in the side wall of the groove of the transmission head, and a limit spring is installed in the spring mounting hole. One end of the return spring is connected to the limit block, and the other end is placed in the spring mounting hole. One end of the limit block is installed on the groove of the indexing rotating disk through a pin shaft, and the limit block rotates around the pin shaft. The shape of the limit block is similar to the hook tooth groove, and the limit block is used in conjunction with the hook tooth groove.

[0009] Preferably, a plurality of limiting holes are provided on the surface of the transmission head that is in contact with the mounting seat, and the limiting holes are evenly distributed. A spring is provided inside the surface of the mounting seat that is in contact with the transmission head, and a ball is provided at the outer end of the spring, and the ball is provided on the rotation travel path of the limiting hole.

[0010] Preferably, the rotating shaft is passed through the mounting seat, and the other end of the rotating shaft is connected to a connecting shaft, and the diameter of the connecting shaft is smaller than the gap of the punches, and the connecting shaft is placed between the punches, and the outer end of the connecting shaft is also provided with a stamping part mounting head, and the stamping part mounting head is also provided with a stamping part clamping block, the profiling head is provided outside the rotating shaft and the connecting shaft, and the stamping part clamping block is exposed outside the profiling head.

[0011] Preferably, the lower die includes a lower die base, a lower template arranged on the lower die base, and an auxiliary block is installed on the lower template through a pin shaft. The auxiliary block is arranged in an N shape, and one end is installed on the lower template in cooperation with the pin shaft, and the other end is placed on the end of the shaft rod. The auxiliary block can rotate around the pin shaft to assist in limiting the stamping part. The lower die base is also provided with a lower die mounting plate groove for cooperating with the lower template.

[0012] The beneficial effects of the present invention are: this technology sets a dividing mechanism in the mold, and uses the dividing mechanism through the opening and closing of the mold, thereby improving the stamping efficiency of the mold; and each time the transmission head is driven to rotate, the ball will jump out of the original limiting hole and be stuck in the corresponding limiting hole after rotation, which plays a limiting role on the transmission head, improves the accuracy of the rotation angle of the transmission head and the rotating shaft, thereby ensuring the accuracy of the stamping position after rotation, and ensuring the accuracy and quality of the stamped parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a high-precision indexing punching die mechanism of the present invention;

[0014] Figure 2 This is a front-view disassembled diagram of a high-precision indexing punching die mechanism of the present invention;

[0015] Figure 3 This is a rear-view disassembled diagram of a high-precision indexing punching die mechanism of the present invention;

[0016] Figure 4 A diagram of the driving components of the indexing mechanism of a high-precision indexing punching die mechanism of the present invention;

[0017] Figure 5 This is a schematic diagram of the installation of the hook tooth groove and transmission head of a high-precision indexing punching die mechanism of the present invention;

[0018] Figure 6 This is a schematic diagram of the assembly of a stamping part and a profiling head of a high-precision indexing punching die mechanism of the present invention;

[0019] Figure 7 It is a schematic diagram of the stamping part of the present invention;

[0020] In the figure: 1. upper die; 2. lower die; 11. guide column; 12. guide sleeve; 13. punch; 14. ejector block; 21. lower die base; 3. indexing mechanism; 22. profiling head; 23. blanking chute; 31. mounting base; 32. shaft; 33. indexing rotating disk; 34. indexing rotating disk slot; 35. rotation limit slot; 36. arc steep slope; 331. rotating rod; 332. hook tooth slot; 321. transmission head; 322. intermediate slot; 323. limit block; 324. limit spring; 3211. limit hole; 311. spring; 312. ball; 3222. connecting shaft; 3223. stamping part mounting head; 3224. stamping part clamping block; 24. lower template; 25. pin shaft; 26. auxiliary block; 27. lower die mounting plate slot. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0023] With reference to Figures 1 to 7 A high-precision indexing punching die mechanism, comprising an upper die 1 and a lower die 2, which are arranged in a top-to-bottom corresponding manner, and a guide pillar 11 and a guide sleeve 12 are arranged around the upper die 1 and the lower die 2 to cooperate with each other for guiding, the upper die 1 comprises an upper die seat 11, an upper die plate 12 arranged on the upper die seat 11, a punch 13 fixed in the upper die plate through a fixing piece, and a top block 14 arranged on the upper die seat, the lower die 2 comprises a lower die seat 21, an indexing mechanism 3 arranged on the lower die seat 21 and driven by the top block of the upper die 1, and a profiling head 22 rotated by the indexing mechanism 3, and a punching hole for cooperating with the punch is arranged on the profiling head 22, and a blanking groove 23 is arranged on the lower die seat 21 and placed at the front end of the indexing mechanism 3 for cooperating with the punching waste recovery;

[0024] The indexing mechanism 3 comprises a mounting seat 31 fixed on the lower die plate, a shaft 32 rotatably arranged in the mounting seat 31, and an indexing rotating disc 33 movably mounted on the mounting seat 31 and driving the shaft to rotate, a indexing rotating disc groove 34 cooperating with the indexing rotating disc 33 is arranged on the rear surface of the mounting seat 31, and a rotating limiting groove 35 is arranged on both sides of the indexing rotating disc groove, an arc-shaped steep slope 36 is arranged on the front surface of the mounting seat, and the arc-shaped steep slope 36 is placed below the punch 13, the waste punched out by the punch 13 first falls on the arc-shaped steep slope 36, and then slides to the blanking groove 23 through the arc-shaped steep slope 36 for recovery;

[0025] The end of the indexing rotating disk 33 is provided with a rotating rod 331 used in conjunction with the top block, and the rotating rod 331 is placed under the top block 14 and fixedly connected to the rotating rod 331. The rotating rod 331 is placed in the rotation limiting groove 35 and is rotation-limited by the rotation limiting groove 35. A hook tooth groove 332 is provided at the center of the indexing rotating disk 33 to cooperate with the shaft rod 32 for installation. The hook teeth of the hook tooth groove 332 are all hooked outward, and the hook teeth are arranged in sequence in a circular shape. A transmission head 321 is provided at one end of the shaft rod 32. The transmission head 321 is placed in the indexing rotating disk groove 34 of the mounting seat and is placed in the hook tooth groove 332 of the indexing rotating disk 33. 32 is installed, the surface of the transmission head 321 is provided with a groove 322, a rotatable limit block 323 is installed on the groove 322, a spring mounting hole is provided in the side wall of the groove of the transmission head 321, and a limit spring 324 is installed in the spring mounting hole, and one end of the return spring 324 is connected to the limit block 323, and the other end is placed in the spring mounting hole, one end of the limit block 323 is installed on the groove 322 of the indexing rotating disk through a pin, and the limit block 323 rotates around the pin, the shape of the limit block 323 is similar to the hook tooth groove 332, and the limit block 323 cooperates with the hook tooth groove 332 When the cam 33 is in operation, the lower mold moves downward, driving the top block to move downward, thereby driving the rotating rod 331 of the indexing rotating disk 33 to move downward, thereby driving the entire indexing rotating disk 33 to rotate clockwise. While rotating, the hook tooth groove 332 inside the indexing rotating disk 33 rotates synchronously, and because the special structure of the hook teeth is hooked outward, and the limit block 323 and the hook tooth groove 332 are configured to imitate each other, when the indexing rotating disk 33 rotates, the limit block 323 is pushed outward by the elastic force of the limiting spring 324, and the limiting spring 324 is stuck in the hook tooth groove 332, thereby synchronously driving the transmission head 321, thereby driving the entire rotating shaft 32 to rotate, and the upper mold 1 can only move downward to a certain distance, and the upper mold 1 can only move downward to a certain distance. The limit spring 324 is used to press the limit block 323 inwards, thereby preventing the transmission head 321 and the rotating shaft 32 from rotating. Only the indexing rotating disk 33 is reset, and the mold is continuously opened and closed to reciprocate, each time rotating a certain angle to cooperate with stamping to achieve indexing stamping;

[0026] When the cam 321 is in the unlock state, the locking cam 321 is locked, and the locking cam 321 is locked.

[0027] The rotating shaft 32 is provided through the mounting seat 31, and the other end of the rotating shaft 32 is connected to the connecting shaft 3222, and the diameter of the connecting shaft 3222 is smaller than the gap of the punch 13, and the connecting shaft 3222 is placed between the punches 13 to avoid the punch 13 and the connecting shaft 3222 from touching during stamping, causing damage to the mold. The outer end of the connecting shaft 3222 is also provided with a stamping part mounting head 3223, and the stamping part mounting head is also provided with a stamping part block 3224. The profiling head cover is provided at The rotating shaft 32 and the connecting shaft 3222 are outside, and the stamping part block 3223 is exposed outside the profiling head 22. When the rotating shaft 32, the connecting shaft 3222, and the stamping part mounting head 3223 rotate, the profiling block 22 is driven to rotate together. The stamped brazier to be stamped is set outside the profiling head 22 and installed on the stamping part mounting head, and is fixed with the stamping part block buckle installation. The connecting shaft and the stamping part mounting head will rotate with the rotation of the rotating shaft, thereby achieving that each group rotates a certain angle before stamping.

[0028] The lower die includes a lower die base 21, a lower die plate 24 disposed on the lower die base, and an auxiliary block 26 mounted on the lower die plate 24 via a pin 25. The auxiliary block 26 cooperates with the stamping part for installation. The auxiliary block 26 is arranged in an N-shape, with one end being mounted on the lower die plate 24 in cooperation with the pin 25, and the other end being placed in front of the stamping part mounting head. The auxiliary block can rotate around the pin to assist in limiting the position of the stamping part. The lower die base 21 also has a lower die mounting plate groove 27 for cooperating with the lower die plate. The lower die plate 24 is clipped into the lower die mounting groove 27 via a fixing member, thereby facilitating disassembly and effectively cooperating with the movement of the lower die plate.

[0029] In this embodiment, when the mold is opened, the stamping part 4 is manually taken out, and the auxiliary block 26 is manually rotated to avoid obstruction during installation. The stamping part 4 is then inserted into the profiling block 22 and fixed with the stamping part clamping block 3223 of the stamping part mounting head 3223 at the end. After installation, the auxiliary block 26 is rotated again so that one end of the auxiliary block is placed on the end head of the stamping part 4 (i.e., the position of the stamping part mounting head 3223). Since the end head of the stamping part is flat, it will not cause damage when used in conjunction with the auxiliary block. In order to prevent deviation during rotation or stamping, it plays a further limiting role. The mold is closed, the lower mold 1 is pressed down, and stamping is performed, which drives the top block 14 to move downward, thereby driving the indexing rotation. The rotating rod 331 of the disk 33 moves downward, thereby driving the entire indexing rotating disk 33 to rotate clockwise. During the rotation, the hook tooth groove 332 inside the indexing rotating disk 33 rotates synchronously. Since the special structure of the hook teeth is hooked outward, and the limit block 323 and the hook tooth groove 332 are configured to imitate each other, when the indexing rotating disk 33 rotates, the limit block 323 is pushed outward by the elastic force of the limiting spring 324, and the limit spring 324 is stuck in the hook tooth groove 332, thereby synchronously driving the transmission head 321 to rotate, thereby driving the entire rotating shaft 32 to rotate, thereby driving the imitation block 22 to rotate, so that the stamping part 4 installed on the imitation block 22 rotates synchronously by a certain angle, and the upper mold 1 moves downward by a certain distance. The distance is certain, and the rotation limit groove 35 limits the rotation rod 331, so that it can only rotate to a certain angle, and then cooperates with the ball 312 to limit. Each time the ball 312 is rotated, it will jump out of the original limit hole 3211 and be stuck in the corresponding limit hole 3211 after rotation, which plays a role in limiting the transmission head 321, thereby improving the accuracy of the angular rotation of the transmission head 321 and the rotating shaft 32, thereby ensuring the accuracy of the stamping position after no rotation, and ensuring the accuracy and quality of the stamped parts. In this embodiment, the punch is rotated 30 degrees each time, and the limit holes 3211 are divided into 12 groups. At the same time, the upper die drives the punch to move downward, and the punch punches the stamped part 4, and is used in conjunction with the punching holes opened on the profiling block to bring the waste out of the punching holes. After the cam 331 is pushed down, the cam 332 is pushed back and the cam 333 is pushed down, so that the cam 333 is pushed back and the cam 333 is pushed down.

[0030] The benefits of the present invention are that this technology sets a dividing mechanism in the mold, and uses the dividing mechanism through the opening and closing of the mold, thereby improving the stamping efficiency of the mold; and each time the transmission head is driven to rotate, the ball will jump out of the original limiting hole and be stuck in the corresponding limiting hole after rotation, which plays a limiting role on the transmission head, improves the accuracy of the rotation angle of the transmission head and the rotating shaft, thereby ensuring the accuracy of the stamping position after rotation, and ensuring the accuracy and quality of the stamped parts.

[0031] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A high-precision indexing punching die mechanism, comprising an upper die and a lower die, wherein the upper die comprises an upper die base, an upper die plate disposed on the upper die base, a punch fixed to the upper die plate by a fixing member, and a top block disposed on the upper die base; the lower die comprises a lower die base, an indexing mechanism disposed on the lower die base and driven by the top block of the upper die, and a profiling head that rotates in response to the indexing mechanism, wherein the profiling head is provided with a punching hole for cooperating with the punch, and wherein: The cam is fixedly mounted on the support frame, and the cam is fixedly mounted on the support frame, wherein the cam is fixedly mounted on the support frame and drives the cam to rotate. The cam is fixedly mounted on the support frame, wherein the cam is fixedly mounted on the support frame and drives the cam to rotate. The cam is installed in cooperation with the cam. The rear surface of the cam is provided with a cam groove which is matched with the cam groove, and rotation limit grooves are provided on both sides of the cam groove. The bottom of the front side of the cam is provided with an arc-shaped steep slope, and the arc-shaped steep slope is placed below the punch. The end of the cam is provided with a rotating rod for use with the top block, and the rotating rod is placed below the top block and fixedly connected to the rotating rod. The rotating rod is placed in the rotation limit groove and is rotationally limited by the rotation limit groove. The center of the cam is provided with a There is a hook tooth groove installed in cooperation with the shaft rod, the hook teeth of the hook tooth groove are all hooked outward, one end of the shaft rod is provided with a transmission head, the transmission head is placed in the indexing rotating disk groove of the mounting seat, and is placed in the hook tooth groove of the indexing rotating disk for installation, a groove is provided on the surface of the transmission head, a rotatable limit block is installed on the groove, a spring mounting hole is provided in the side wall of the groove of the transmission head, and a limit spring is installed in the spring mounting hole, and one end of the limit spring is connected to the limit block, and the other end is placed in the spring mounting hole, one end of the limit block is installed on the groove of the indexing rotating disk through a pin shaft, and the limit block rotates around the pin shaft, the shape of the limit block is shaped like the hook tooth groove, and the limit block is used in conjunction with the hook tooth groove.

2. A high-precision indexing punching die mechanism according to claim 1, characterized in that: A plurality of limiting holes are provided on the side of the transmission head that is in contact with the mounting seat, and the limiting holes are evenly distributed. A spring is provided inside the side of the mounting seat that is in contact with the transmission head, and a ball is provided at the outer end of the spring. The ball is provided on the rotation travel path of the limiting hole.

3. A high-precision indexing punching die mechanism according to claim 1, characterized in that: The shaft rod is passed through the mounting seat, and the other end of the shaft rod is connected to a connecting shaft, and the diameter of the connecting shaft is smaller than the gap of the punches, and the connecting shaft is placed between the punches. The outer end of the connecting shaft is also provided with a stamping part mounting head, and the stamping part mounting head is also provided with a stamping part block, the profiling head is sleeved outside the shaft rod and the connecting shaft, and the stamping part block is exposed outside the profiling head.

4. A high-precision indexing punching die mechanism according to claim 1, characterized in that: The lower die includes a lower die base, a lower template arranged on the lower die base, and an auxiliary block installed on the lower template through a pin shaft. The auxiliary block is arranged in an N shape, and one end is mounted on the lower template in conjunction with the pin shaft, and the other end is placed on the end of the shaft rod. The auxiliary block can rotate around the pin shaft to assist in limiting the stamping part. A lower die mounting plate groove is also provided on the lower die base to cooperate with the lower template.

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