Metal stamping die with stamping head convenient to replace

Abstract

The utility model relates to a stamping die, belongs to the technical field of stamping dies, and particularly relates to a metal stamping die with a stamping head convenient to replace, which comprises a base, a mounting frame fixedly mounted on the base, an air cylinder fixedly mounted on the top wall surface of the mounting frame, and an air cylinder pressing shaft fixedly mounted at the output end of the air cylinder. The air cylinder pressing shaft penetrates through the upper wall face and the lower wall face of the installation frame, a lower die is arranged on the top wall face of the base, a punching head is movably installed on the lower die, and the top wall face of the punching head is movably connected with the air cylinder pressing shaft. The mounting mechanism comprises a connecting block, a clamping ring, a mounting groove, a limiting block, a limiting rod and a limiting groove, the connecting block is fixedly mounted on the top wall face of the punching head, and a circular groove consistent with the interior of the connecting block in size is formed in the bottom of the air cylinder pressing shaft; according to the stamping die, the effect of conveniently replacing the stamping head is achieved, and the problem that the stamping head of an existing stamping die is troublesome to replace is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a metal stamping die with a stamping head that is convenient to replace. Background Art

[0002] A stamping die is a special process equipment used to process materials into parts during cold stamping. It is called a cold stamping die. When an operator uses the stamping die to continuously stamp metal workpieces, the punch head in the stamping die is often easily damaged due to stamping metal workpieces after long-term use, so the punch head of the stamping die in the prior art needs to be replaced frequently.

[0003] After searching the Chinese patent with publication number CN208879491U, a metal stamping die is disclosed, including a frame, a lower die base, an upper die base, a lifting mechanism and a jacking mechanism, the upper die base is provided with a stamping terminal and a first cylinder, the lower die base is provided with a stamping groove, and the stamping groove matches the stamping terminal; the outer wall of the stamping terminal is provided with a nickel-plated wear-resistant layer; the inner wall of the stamping groove is provided with a rubber buffer layer; the jacking mechanism includes a jacking rod and a second cylinder that drives the jacking rod to move up and down.

[0004] Based on the above search and combined with the prior art, we found that:

[0005] In order to achieve a good fixing effect, the existing stamping die body and the stamping head are generally fixedly connected by a bolt structure, which requires the operator to use tools to disassemble and replace the bolts, and the operation is time-consuming, labor-intensive and very troublesome. Utility Model Content

[0006] In order to solve the above technical problems, the utility model proposes a metal stamping die with a stamping head that is easy to replace, thereby achieving the effect of facilitating the replacement of the stamping head.

[0007] The technical solution to achieve the purpose of the utility model is: a metal stamping die with a conveniently replaced stamping head, comprising a base, a mounting frame fixedly mounted on the base, a cylinder fixedly mounted on the top wall of the mounting frame, a cylinder pressure shaft fixedly mounted on the output end of the cylinder, the cylinder pressure shaft penetrates the upper and lower walls of the mounting frame, a lower die is provided on the top wall of the base, a stamping head is movably mounted on the lower die, the top wall of the stamping head is movably connected to the cylinder pressure shaft, and a mounting mechanism and a reset mechanism are provided on the cylinder pressure shaft;

[0008] The mounting mechanism includes a connecting block, a retaining ring, a mounting groove, a limit block, a limit rod and a limit groove. The connecting block is fixedly mounted on the top wall of the punching head. A circular groove consistent with the size of the inside of the connecting block is provided at the bottom of the cylinder pressure shaft. The connecting block is located inside the cylinder pressure shaft. The retaining ring is movably sleeved under the side wall of the cylinder pressure shaft. The mounting groove is arranged in a circular shape inside the cylinder pressure shaft. The limit block is movably mounted inside the mounting groove, and the outer side wall of the limit block is an inclined surface. The limit rod is fixedly mounted on the inner wall of the limit block. A spring is sleeved on the limit rod. The limit groove is arranged at a position corresponding to the limit rod on the punching head.

[0009] In some embodiments, the reset mechanism includes two reset grooves, a reset block and a reset spring. The two reset grooves are symmetrically opened on the outer wall of the cylinder pressure shaft. The two reset blocks are movably installed in the inside of the two reset grooves respectively. The retaining ring is fixedly connected to the reset block. The retaining ring is movably installed on the cylinder pressure shaft through the reset block. The reset spring is installed on the top of the reset block and connected to the inside of the cylinder pressure shaft.

[0010] In some embodiments, a second movable groove is provided on the top wall of the base at a position corresponding to the lower mold, a movable shaft is movably installed inside the second movable groove, a transmission block is movably installed on the movable shaft, the transmission block and the movable shaft are threadedly connected, the lower mold is fixedly installed on the top wall of the transmission block, and a transmission mechanism is provided on the base.

[0011] In some embodiments, the transmission mechanism includes a first movable groove, a transmission gear, a transmission belt, a connecting plate and a transmission rack. The first movable groove is opened on the side wall of the mounting frame. There are two transmission gears in total. The two transmission gears are movably mounted on the upper and lower sides of the first movable groove respectively. The transmission belt is movably sleeved between the two transmission gears. The transmission belt and the two transmission gears are meshed for transmission. The second movable groove is connected to the interior of the first movable groove. The movable shaft is fixedly connected to the lower transmission gear. The connecting plate is laterally fixedly mounted on the cylinder pressure shaft. The transmission rack is vertically fixedly mounted on the connecting plate, and the transmission rack and the upper transmission gear are meshed with each other.

[0012] Compared with the prior art, the present invention has the following significant advantages:

[0013] First, the utility model is provided with an installation mechanism and a reset mechanism. When connecting the cylinder pressure shaft and the punch head, the connecting block is first inserted into the inside of the cylinder pressure shaft, and then the clamping ring can be pushed downward. The clamping ring moves downward on the cylinder pressure shaft. The downward movement of the clamping ring will squeeze the limit block. After the inclined surface of the limit block is squeezed, it will move toward the inside of the installation groove. The limit block then drives the limit rod to move, and the movement of the limit rod will cause one end of the limit rod to move to the inside of the limit groove. At this time, the cylinder pressure shaft will be fixedly connected with the punch head, and the punch head can be fixedly installed on the cylinder pressure shaft. When you want to replace a different punch head, you only need to push the clamping ring upward. After the clamping ring moves upward, the limit rod will leave the inside of the limit groove under the action of the spring. At this time, the punch head can be removed from the cylinder pressure shaft, thereby achieving the effect of facilitating the replacement of the punch head.

[0014] Second: In the utility model, when stamping, the cylinder pressing shaft is driven by the cylinder to move downward, and the connecting plate and the transmission rack are also driven by the cylinder pressing shaft to move downward, and the transmission rack is meshed with the upper transmission gear for transmission, and the upper transmission gear is driven to rotate, and the lower transmission gear and the movable shaft can be driven to rotate through the transmission belt, and the rotation of the movable shaft will drive the transmission block and the lower mold to move, so that the lower mold moves to the bottom of the punch head for stamping. When the stamping is completed, the cylinder pressing shaft moves upward, and the transmission rack moves upward, and the transmission gear is driven to reverse, so that the lower mold can be driven to move forward, and it is convenient to take out the stamped metal product from the inside of the lower mold, so as to achieve the effect of facilitating material removal after the stamping is completed.

[0015] The problem that it is troublesome to replace the punch head of the existing punching die is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 It is a schematic diagram of the main structure provided in one embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the installation mechanism provided in one embodiment of the utility model;

[0019] Figure 3 The utility model provides in one embodiment Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 The utility model provides in one embodiment Figure 1 Enlarged view of point B in the middle.

[0021] Description of reference numerals:

[0022] 1. Base; 2. Mounting frame; 3. Cylinder; 4. Cylinder pressing shaft; 5. Lower mold; 6. Punch head; 7. Connecting block; 8. Snap ring; 9. Mounting groove; 10. Limit block; 11. Limit rod; 12. Limit groove; 13. Reset groove; 14. Reset block; 15. Reset spring; 16. First movable groove; 17. Transmission gear; 18. Transmission belt; 19. Connecting plate; 20. Transmission rack; 21. Second movable groove; 22. Movable shaft; 23. Transmission block. DETAILED DESCRIPTION

[0023] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model provides a metal stamping die with a conveniently replaced stamping head through improvement. The technical solution of the utility model is:

[0025] like Figure 1 As shown, a metal stamping die with a punch head that can be easily replaced comprises a base 1, the base 1 is a rectangular structure, a mounting frame 2 is fixedly mounted on the base 1, a cylinder 3 is fixedly mounted on the top wall of the mounting frame 2, a cylinder pressure shaft 4 is fixedly mounted on the output end of the cylinder 3, the cylinder pressure shaft 4 is a cylindrical structure, the cylinder pressure shaft 4 penetrates the upper and lower walls of the mounting frame 2, a lower die 5 is arranged on the top wall of the base 1, a punch head 6 is movably mounted on the lower die 5, and the top wall of the punch head 6 is movably connected to the cylinder pressure shaft 4;

[0026] like Figure 2 and Figure 3As shown, a mounting mechanism and a reset mechanism are provided on the cylinder pressure shaft 4, and the mounting mechanism includes a connecting block 7, a snap ring 8, a mounting groove 9, a limit block 10, a limit rod 11 and a limit groove 12. The connecting block 7 is a circular block, and the connecting block 7 is fixedly installed on the top wall of the punch head 6. A circular groove having the same size as that inside the connecting block 7 is provided at the bottom of the cylinder pressure shaft 4. The connecting block 7 is located inside the cylinder pressure shaft 4, and the snap ring 8 is a circular ring structure, and the snap ring 8 is movably sleeved under the side wall of the cylinder pressure shaft 4. There are multiple installation grooves 9, limit blocks 10, limit rods 11 and limit grooves 12. The installation grooves 9 are rectangular grooves. Multiple installation grooves 9 are annularly distributed and opened inside the cylinder pressure shaft 4. The limit block 10 is a trapezoidal block. The limit block 10 is movably installed inside the installation groove 9, and the outer wall of the limit block 10 is an inclined surface. The limit rod 11 is a cylindrical structure. The limit rod 11 is fixedly installed on the inner wall of the limit block 10. A spring is sleeved on the limit rod 11. The limit groove 12 is connected to the limit The limiting groove 12 is provided on the punch head 6 at a position corresponding to the limiting rod 11. When the cylinder pressure shaft 4 and the punch head 6 are connected, the connecting block 7 is first inserted into the cylinder pressure shaft 4, and then the clamping ring 8 can be pushed downward. The clamping ring 8 moves downward on the cylinder pressure shaft 4. The clamping ring 8 moves downward and squeezes the limiting block 10. After the inclined surface of the limiting block 10 is squeezed, it moves toward the inside of the installation groove 9. The limiting block 10 then drives the limiting rod 11 to move, and the limiting block 10 then drives the limiting rod 11 to move. When the positioning rod 11 moves, one end of the limiting rod 11 will move to the inside of the limiting groove 12. At this time, the cylinder shaft 4 will be fixedly connected with the punch head 6, and the punch head 6 can be fixedly installed on the cylinder shaft 4. When you want to replace a different punch head 6, you only need to push the retaining ring 8 upward. After the retaining ring 8 moves upward, the limiting rod 11 will leave the inside of the limiting groove 12 under the action of the spring. At this time, the punch head 6 can be removed from the cylinder shaft 4, thereby achieving the effect of facilitating the replacement of the punch head 6.

[0027] like Figure 3 As shown, in one embodiment, the reset mechanism includes two reset grooves 13, a reset block 14 and a reset spring 15. The reset groove 13 is a groove of a rectangular structure. The two reset grooves 13 are symmetrically opened on the outer wall of the cylinder pressure shaft 4. The reset block 14 is a block of a rectangular structure. The two reset blocks 14 are respectively movably installed in the inside of the two reset grooves 13, and the retaining ring 8 is fixedly connected to the reset block 14. The retaining ring 8 is movably installed on the cylinder pressure shaft 4 through the reset block 14. The reset spring 15 is installed on the top of the reset block 14 and connected to the inside of the cylinder pressure shaft 4. The retaining ring 8 is limited on the cylinder pressure shaft 4 by the reset spring 15. When the retaining ring 8 moves upward, the reset spring 15 will be squeezed by the reset block 14. When the punch head 6 is replaced and the retaining ring 8 is loosened, the retaining ring 8 will move downward under the action of the reset spring 15 to fix the punch head 6.

[0028] like Figure 1 As shown, in one embodiment, a second movable groove 21 is provided on the top wall surface of the base 1 at a position corresponding to the lower mold 5. The second movable groove 21 is a groove of a rectangular structure. A movable shaft 22 is movably installed inside the second movable groove 21. The movable shaft 22 is a cylindrical structure with threads. A transmission block 23 is movably installed on the movable shaft 22. The transmission block 23 is a block of a rectangular structure. The transmission block 23 is threadedly connected to the movable shaft 22. The lower mold 5 is fixedly installed on the top wall surface of the transmission block 23. A transmission mechanism is provided on the base 1.

[0029] like Figure 1 and Figure 4 As shown, the transmission mechanism includes a first movable groove 16, a transmission gear 17, a transmission belt 18, a connecting plate 19 and a transmission rack 20. The first movable groove 16 is a groove of a rectangular structure. The first movable groove 16 is opened on the side wall of the mounting frame 2. There are two transmission gears 17. The two transmission gears 17 are movably mounted on the upper and lower sides of the first movable groove 16 respectively. The transmission belt 18 is movably sleeved between the two transmission gears 17. The transmission belt 18 and the two transmission gears 17 are meshed for transmission. The second movable groove 21 is communicated with the interior of the first movable groove 16. The movable shaft 22 is fixedly connected to the lower transmission gear 17. The connecting plate 19 is a long rod of a rectangular structure. The connecting plate 19 is horizontally fixedly mounted on the cylinder pressure shaft 4. The transmission rack 20 is vertically fixedly mounted on the connecting plate 19, and the transmission rack 20 is relative to the upper transmission gear 17. The cylinder pressing shaft 4 is driven by the cylinder 3 to move downward during stamping. At this time, the connecting plate 19 and the transmission rack 20 are also driven by the cylinder pressing shaft 4 to move downward, and the transmission rack 20 is meshed with the upper transmission gear 17. The upper transmission gear 17 will be driven to rotate, and the transmission belt 18 can drive the lower transmission gear 17 and the movable shaft 22 to rotate. The rotation of the movable shaft 22 will drive the transmission block 23 and the lower mold 5 to move, so that the lower mold 5 moves to the bottom of the punch head 6 for stamping. When the stamping is completed, the cylinder pressing shaft 4 moves upward. At this time, the transmission rack 20 moves upward, and the transmission gear 17 will be driven to reverse, so that the lower mold 5 can be driven to move forward. At this time, it is convenient to take out the stamped metal product from the inside of the lower mold 5, so as to achieve the effect of facilitating material removal after the stamping is completed.

[0030] The specific working methods are:

[0031] By providing an installation mechanism and a reset mechanism, when connecting the cylinder shaft 4 and the punch head 6, first insert the connecting block 7 into the inside of the cylinder shaft 4, and then push the snap ring 8 downward. The snap ring 8 moves downward on the cylinder shaft 4. The downward movement of the snap ring 8 will squeeze the limit block 10. After the inclined surface of the limit block 10 is squeezed, it will move toward the inside of the installation groove 9. The limit block 10 then drives the limit rod 11 to move, and the movement of the limit rod 11 will cause one end of the limit rod 11 to move to the inside of the limit groove 12. At this time, the cylinder shaft 4 will be fixedly connected with the punch head 6, and then the punch head 6 can be fixedly installed on the cylinder shaft 4. When you want to replace a different punch head 6, you only need to push the snap ring 8 upward. After the snap ring 8 moves upward, the limit rod 11 will leave the inside of the limit groove 12 under the action of the spring. At this time, the punch head 6 can be removed from the cylinder shaft 4, thereby achieving the effect of facilitating the replacement of the punch head 6.

[0032] The technical means disclosed in the utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the utility model belong to the common knowledge of those skilled in the art.

Claims

1. A metal stamping die with a stamping head that is easy to replace, comprising a base (1), characterized in that: The base (1) is fixedly mounted with a mounting frame (2), a cylinder (3) is fixedly mounted on the top wall of the mounting frame (2), a cylinder pressure shaft (4) is fixedly mounted on the output end of the cylinder (3), the cylinder pressure shaft (4) penetrates the upper and lower walls of the mounting frame (2), a lower mold (5) is arranged on the top wall of the base (1), a punch head (6) is movably mounted on the lower mold (5), the top wall of the punch head (6) is movably connected to the cylinder pressure shaft (4), and a mounting mechanism and a reset mechanism are arranged on the cylinder pressure shaft (4); The mounting mechanism comprises a connecting block (7), a snap ring (8), a mounting groove (9), a limit block (10), a limit rod (11) and a limit groove (12); the connecting block (7) is fixedly mounted on the top wall of the punch head (6); a circular groove having the same size as the inside of the connecting block (7) is provided at the bottom of the cylinder pressure shaft (4); the connecting block (7) is located inside the cylinder pressure shaft (4); the snap ring (8) is movably sleeved below the side wall of the cylinder pressure shaft (4); the mounting groove (9) is arranged inside the cylinder pressure shaft (4) in an annular distribution; the limit block (10) is movably mounted inside the mounting groove (9); the outer side wall of the limit block (10) is an inclined surface; the limit rod (11) is fixedly mounted on the inner wall of the limit block (10); a spring is sleeved on the limit rod (11); and the limit groove (12) is arranged at a position on the punch head (6) corresponding to the limit rod (11).

2. A metal stamping die with a conveniently replaceable stamping head according to claim 1, characterized in that: The reset mechanism comprises two reset grooves (13), a reset block (14) and a reset spring (15); the two reset grooves (13) are symmetrically arranged on the outer side wall of the cylinder pressure shaft (4); and the two reset blocks (14) are movably mounted inside the two reset grooves (13) respectively.

3. A metal stamping die with a conveniently replaceable stamping head according to claim 2, characterized in that: The snap ring (8) is fixedly connected to the reset block (14); the snap ring (8) is movably mounted on the cylinder pressure shaft (4) through the reset block (14); and the reset spring (15) is mounted on the top of the reset block (14) and connected to the inside of the cylinder pressure shaft (4).

4. A metal stamping die with a conveniently replaceable stamping head according to claim 1, characterized in that: A second movable groove (21) is provided on the top wall surface of the base (1) at a position corresponding to the lower mold (5), a movable shaft (22) is movably installed inside the second movable groove (21), and a transmission block (23) is movably installed on the movable shaft (22).

5. A metal stamping die with a conveniently replaceable stamping head according to claim 4, characterized in that: The transmission block (23) is threadedly connected to the movable shaft (22), the lower mold (5) is fixedly mounted on the top wall of the transmission block (23), and a transmission mechanism is arranged on the base (1).

6. A metal stamping die with a conveniently replaceable stamping head according to claim 5, characterized in that: The transmission mechanism comprises a first movable groove (16), a transmission gear (17), a transmission belt (18), a connecting plate (19) and a transmission rack (20); the first movable groove (16) is arranged on the side wall of the mounting frame (2); there are two transmission gears (17); the two transmission gears (17) are movably mounted on the upper and lower sides of the first movable groove (16); the transmission belt (18) is movably sleeved between the two transmission gears (17); and the transmission belt (18) and the two transmission gears (17) are meshed for transmission.

7. A metal stamping die with a conveniently replaceable stamping head according to claim 6, characterized in that: The second movable groove (21) is connected to the interior of the first movable groove (16), the movable shaft (22) is fixedly connected to the lower transmission gear (17), the connecting plate (19) is fixedly installed on the cylinder pressure shaft (4) in a horizontal direction, the transmission rack (20) is fixedly installed on the connecting plate (19) in a vertical direction, and the transmission rack (20) is meshed with the upper transmission gear (17).

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