A die with a punch head that is easily replaced

Abstract

This utility model belongs to the field of stamping die technology, and particularly relates to a die for easy replacement of the stamping head, including an upper die base, a locking assembly, and a lower die base; the upper die base includes a top plate, a connecting plate, and an upper template; the connecting plate is located below the top plate, and the upper template is located below the connecting plate; the connecting plate is provided with a stamping head, and a snap-fit ​​structure is provided between the connecting plate and the stamping head to initially fix the stamping head; the locking assembly is located between the connecting plate and the upper template for secondary fixing of the stamping head; the lower die base is located below the upper template, and a protective assembly for protecting the stamping head is provided between the lower die base and the lower template.

Description

Technical Field

[0001] This utility model belongs to the field of stamping die technology, and in particular relates to a die that facilitates the replacement of the stamping head. Background Technology

[0002] In the field of metal processing, stamping has become an indispensable key processing method for many manufacturing industries due to its advantages of high efficiency, precision, and the ability to mass-produce complex-shaped parts. The stamping process mainly uses a press to apply pressure to sheet metal placed in a die. Through the specific shape and structure of the die, the sheet metal undergoes plastic deformation, thereby obtaining a part shape that meets the design requirements.

[0003] In the existing stamping die operation process, the press usually pushes the stamping head at the bottom of the upper die to move downward. The stamping head applies pressure to the material plate placed on the lower die. Under the action of the stamping holes in the lower die, the material plate gradually deforms into the required part shape, thus completing the stamping process.

[0004] However, in actual production, to meet diverse market demands, companies often need to produce parts of different shapes and sizes. This means that when stamping different parts, it is necessary to frequently change the stamping heads on the stamping dies to adapt to different processing requirements. However, most existing stamping heads on dies are fixed with bolts. This fixing method requires the use of external tools such as wrenches to loosen and tighten the bolts when changing the stamping heads. The operation is cumbersome, not only consuming a lot of time and manpower, but also having low replacement efficiency, which seriously affects the continuity of production and overall production efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a mold that facilitates the replacement of the stamping head, in order to solve the technical problem that most stamping heads in the prior art are fixed with bolts, and the replacement process is cumbersome and the replacement efficiency is low.

[0006] To achieve the above objectives, this utility model provides a mold for easy replacement of a stamping head, comprising an upper mold base, a locking assembly, and a lower mold base; the upper mold base includes a top plate, a connecting plate, and an upper template; the connecting plate is located below the top plate, and the upper template is located below the connecting plate; a stamping head is provided on the connecting plate, and a snap-fit ​​structure for initially fixing the stamping head is provided between the connecting plate and the stamping head; the locking assembly is located between the connecting plate and the upper template for secondary fixing of the stamping head; the lower mold base is located below the upper template, and a protective assembly for protecting the stamping head is provided between the lower mold base and the upper template.

[0007] As further explained, the buckle structure includes two sets of buckle blocks and two sets of buckle slots; the two sets of buckle blocks are symmetrically arranged on the stamping head; The upper template is provided with mounting holes corresponding to the punch head. Two sets of slots are provided on the side walls of the mounting holes. An inlet is provided between the mounting holes and the slots. The inlet is located below the mounting holes and is connected to the mounting holes. The slots on the punch head enter the slots on both sides of the mounting holes through the inlet and rotate the punch head to initially fix the punch head.

[0008] As further explained, the locking assembly includes two sets of locking claws and a push plate; the two sets of locking claws are slidably connected within the connecting plate and symmetrically distributed above the stamping head, and the locking claws can engage or disengage from the locking blocks on the stamping head; a locking spring is provided between the locking claws and the connecting plate; the push plate is slidably connected within the connecting plate and located between the two sets of locking claws, used to control the relative distance or proximity of the two sets of locking claws.

[0009] As further explained, the locking claw has a "J" shaped structure, and a limiting part is provided at one end of the locking claw near the locking block. The limiting part can engage or disengage from the locking block on the stamping head; a first triangular part is provided at the other end of the locking claw.

[0010] As further explained, one end of the push plate is provided with a second triangular portion, both sides of which abut against one side of the first triangular portion of the two sets of locking claws; the other end of the push plate extends to the outside of the connecting plate, and the other end of the push plate is provided with a vertically arranged pulling portion.

[0011] As further explained, a positioning block is provided between the upper template and the pulling part; the positioning block is slidably connected to the upper template and a sliding groove is provided between the positioning block and the upper template; a positioning groove is provided at one end of the positioning block near the pulling part, and a stepped structure is formed between the positioning block and the positioning groove; a first magnet is provided in the other end of the positioning groove, and a second magnet is provided on the upper template and magnetically connected to the first magnet, and the second magnet is located between the sliding groove and the pulling part.

[0012] As further explained, four sets of guide posts are provided between the upper mold base and the lower mold base; the protection assembly includes a protection plate and four sets of circumferentially distributed protection springs; the protection plate is located below the upper mold plate, and the four corners of the protection plate are sleeved on the guide posts through guide sleeves; the protection plate has through holes for the punch head to slide, and a protective pad is provided below the protection plate; the four sets of protection springs are located between the protection plate and the upper mold plate.

[0013] As further explained, the lower mold base is provided with a support platform for placing the strip; the support platform includes two sets of limiting blocks and a support plate; the two sets of limiting blocks are provided on the lower mold base, the support plate is provided on the bottom of the same side of the two sets of limiting blocks, and the two ends of the support plate are respectively fixedly connected to the limiting blocks; a fixing component for positioning the strip is provided on the other side of the limiting blocks.

[0014] As further explained, the fixing component includes a first fixing block and two sets of second fixing blocks; one end of the first fixing block is fixedly connected to the upper template, and the other end of the first fixing block extends to the outside of the material strip and abuts against that side of the material strip; a clamping part for clamping the material strip is provided between the first fixing block and the lower mold base. Two sets of second fixing blocks are fixedly connected at one end to the upper template, and the two sets of second fixing blocks are located on both sides of the first fixing block; the other end of the second fixing block extends to the outside of the material strip and abuts against that side of the material strip.

[0015] The above-mentioned technical solutions of one or more of the molds for easy replacement of stamping heads provided in this utility model embodiment have at least one of the following technical effects: By setting up a snap-fit ​​structure and a locking assembly, when replacing the stamping head, first press the push plate in the locking assembly toward the inside of the mold, so that it releases the two sets of locking claws in the locking assembly from fixing the top of the stamping head, thus releasing the initial fixation. Then, rotate the stamping head so that the snap-fit ​​block of the snap-fit ​​structure disengages from the snap-fit ​​structure's slot, thus releasing the secondary fixation, and the stamping head can be easily removed. When installing a new stamping head, the operation sequence is reversed to complete the fixing of the stamping head. The entire replacement process is simple and quick, saving operation time and manpower, improving the convenience of replacement operations, thereby reducing equipment downtime, enabling production to proceed more continuously, and effectively improving overall production efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a mold for easy replacement of the stamping head, provided in an embodiment of the present invention.

[0018] Figure 2 An exploded view of the upper mold base provided in an embodiment of this utility model.

[0019] Figure 3 This is a schematic diagram of the locking assembly provided in an embodiment of the present utility model.

[0020] Figure 4 This is a schematic diagram of the internal structure of the upper template provided in an embodiment of the present utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the fixing block provided in an embodiment of the present utility model.

[0022] Figure 6 This is a schematic diagram of the structure of the lower mold base provided in an embodiment of the present utility model.

[0023] Figure 7 This is a schematic diagram of the structure of the support platform provided in an embodiment of the present utility model.

[0024] The following are the labeling elements in the figure: 10. Upper mold base; 11. Top plate; 12. Connecting plate; 13. Upper template; 131. Mounting hole; 132. Inlet; 133. Slide groove; 14. Punch head; 15. Positioning block; 151. Positioning groove; 16. Guide post; 20. Snap-fit ​​structure; 21. Snap block; 22. Snap slot; 30. Locking assembly; 31. Locking claw; 311. Limiting part; 312. First triangular part; 32. Push plate; 321. Second triangular part; 322. Pulling part; 40. Protective components; 41. Protective plate; 42. Protective spring; 43. Guide sleeve; 50. Lower mold base; 51. Support platform; 511. Limiting block; 512. Support plate; 52. Fixing component; 521. First fixing block; 522. Second fixing block; 523. Pressing part; 53. Material strip. Detailed Implementation

[0025] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0029] In one embodiment of this utility model, such as Figures 1-7 As shown, a mold for easy replacement of the stamping head is provided, including an upper mold base 10, a locking assembly 30, and a lower mold base 50. The upper mold base 10 includes a top plate 11, a connecting plate 12, and an upper template 13. The connecting plate 12 is located below the top plate 11, and the upper template 13 is located below the connecting plate 12. A stamping head 14 is provided on the connecting plate 12, and a snap-fit ​​structure 20 for initially fixing the stamping head 14 is provided between the connecting plate 12 and the stamping head 14. The locking assembly 30 is located between the connecting plate 12 and the upper template 13 for secondary fixing of the stamping head 14. The lower mold base 50 is located below the upper template 13, and a protective assembly 40 for protecting the stamping head 14 is provided between the lower mold base 50 and the upper template.

[0030] By setting up the snap-fit ​​structure 20 and the locking assembly 30, when replacing the stamping head 14, first press the push plate 32 inside the locking assembly 30 towards the inside of the mold, so that it releases the two sets of locking claws 31 inside the locking assembly 30 from fixing the top of the stamping head 14, thus releasing the initial fixation. Then rotate the stamping head 14 so that the snap-fit ​​block 21 of the snap-fit ​​structure 20 disengages from the snap-fit ​​groove 22 of the snap-fit ​​structure 20, thus releasing the secondary fixation, and the stamping head 14 can be easily removed. When installing a new stamping head 14, the operation sequence is reversed to complete the fixing of the stamping head 14. The entire replacement process is simple and quick, saving operation time and manpower, improving the convenience of replacement operation, thereby reducing equipment downtime, enabling production to proceed more continuously, and effectively improving overall production efficiency.

[0031] Preferably, the snap-fit ​​structure 20 includes two sets of snap-fit ​​blocks 21 and two sets of snap-fit ​​grooves 22. The two sets of snap-fit ​​blocks 21 are symmetrically arranged on the stamping head 14. The upper template 13 is provided with mounting holes 131 corresponding to the stamping head 14. The two sets of snap-fit ​​grooves 22 are provided on the two side walls of the mounting holes 131, and an inlet 132 is provided between the mounting holes 131 and the snap-fit ​​blocks 21. The inlet 132 is located below the mounting holes 131 and communicates with the mounting holes 131. The snap-fit ​​blocks 21 on the stamping head 14 enter the snap-fit ​​grooves 22 on both sides of the mounting holes 131 through the inlet 132, and the stamping head 14 is rotated to initially fix the stamping head 14. The design of mounting hole 131, locking block 21 and locking groove 22 makes the initial fixing operation of the punch head 14 simple and does not require external tools. Compared with the existing bolt fixing method, it avoids the time and effort spent on finding and using tools, further improves the efficiency of replacing the punch head 14, reduces production interruptions caused by complicated replacement operations, and is conducive to continuous production.

[0032] Furthermore, the locking assembly 30 includes two sets of locking claws 31 and a push plate 32. The two sets of locking claws 31 are slidably connected within the connecting plate 12 and symmetrically distributed above the stamping head 14. The locking claws 31 can engage or disengage from the locking blocks 21 on the stamping head 14. A locking spring (not shown) is provided between the locking claws 31 and the connecting plate 12. The push plate 32 is slidably connected within the connecting plate 12 and located between the two sets of locking claws 31, used to control the relative distance or proximity of the two sets of locking claws 31. By setting the locking claws 31 and the push plate 32, when the punch head 14 is fixed for the second time, the push plate 32 is pulled outward relative to the punch head 14. Under the action of the locking spring, the two sets of locking claws 31 move inward relative to each other and fix the locking block 21 on the punch head 14 through the ends of the two sets of locking claws 31, thus realizing the second fixation of the punch head 14. Conversely, by reversing the operation sequence, the punch head 14 can be released. This design makes the operation of second fixation and release more flexible and convenient. The locking claws 31 can be engaged or disengaged from the locking block 21 by a simple push plate 32 action. Compared with the existing bolt fixing method, there is no need to repeatedly tighten the bolts, which greatly simplifies the operation process, saves replacement time, and improves production efficiency. At the same time, the setting of the locking spring also ensures the stability and reliability of the locking.

[0033] Furthermore, the locking claw 31 has a "J"-shaped structure. A limiting part 311 is provided at one end of the locking claw 31 near the locking block 21. It should be noted that the limiting part 311 is located on the claw portion of the "J"-shaped structure, and can engage or disengage from the locking block 21 on the stamping head 14. A first triangular part 312 is provided at the other end of the locking claw 31. By setting the locking claw 31 to a "J"-shaped structure, and with the limiting part 311 and the first triangular part 312, this structure allows the locking claw 31 to more precisely engage with the locking block 21, achieving stable engagement and disengagement. The design of the limiting part 311 enhances the fixation's firmness, preventing the stamping head 14 from loosening during operation. Compared to existing bolt fixing methods, this avoids the problem of the stamping head 14 being loosely fixed due to loose bolts, improving the stability of the mold operation and product quality, reducing defective and scrap products caused by the loose stamping head 14, and lowering production costs.

[0034] Furthermore, one end of the push plate 32 is provided with a second triangular portion 321, both sides of which abut against one side of the first triangular portion 312 of the two sets of locking claws 31. The other end of the push plate 32 extends to the outside of the connecting plate 12, and the other end of the push plate 32 is provided with a vertically arranged pulling portion 322. By providing the second triangular portion 321 and the pulling portion 322, the push plate 32 can control the locking claws 31 by simply pulling or pushing the pulling portion 322, utilizing the abutting action between the first triangular portion 312 and the second triangular portion 321, making the operation more labor-saving and convenient. Compared with the existing method of using wrenches and other tools to tighten bolts, this reduces the labor intensity of operators, increases the speed of changing the stamping head 14, and further improves production efficiency.

[0035] Furthermore, a positioning block 15 is provided between the upper template 13 and the pulling part 322. The positioning block 15 is slidably connected to the upper template 13, and a groove 133 is provided between the positioning block 15 and the upper template 13. A positioning groove 151 is provided at one end of the positioning block 15 near the pulling part 322, and a stepped structure is formed between the positioning block 15 and the positioning groove 151. A first magnet (not shown in the figure) is provided in the other end of the positioning groove 151, and a second magnet (not shown in the figure) is provided on the upper template 13 and magnetically connected to the first magnet, and the second magnet is located between the groove 133 and the pulling part 322. By setting the positioning block 15, it can position and fix the pulling part 322, preventing the pulling part 322 from being displaced due to vibration or other reasons during the mold operation, and ensuring the stability of the locking assembly 30. Meanwhile, through the magnetic attraction connection of the first magnet and the second magnet, the positioning block 15 can be stably fixed on the upper template 13 after being positioned by the push plate 32, preventing the pulling part 322 from being displaced due to vibration or other reasons during the mold operation, and further ensuring the stability of the locking assembly 30.

[0036] Preferably, four sets of guide posts 16 are provided between the upper mold base 10 and the lower mold base 50. The protective assembly 40 includes a protective plate 41 and four sets of circumferentially distributed protective springs 42. The protective plate 41 is located below the upper mold plate 13, and the four corners of the protective plate are sleeved onto the guide posts 16 via guide sleeves 43. The protective plate 41 has through holes for the punch head 14 to slide, and a protective pad (not shown in the figure) is provided below the protective plate 41. The four sets of protective springs 42 are located between the protective plate 41 and the upper mold plate 13. The guide posts 16 ensure precise alignment of the upper mold base 10 and the lower mold base 50 during the mold closing process, improving the working accuracy of the mold.

[0037] By setting up a protective plate 41, a protective spring 42, and a protective pad, the protective plate 41, the protective pad, and the protective spring 42 can play a buffering and protective role during the operation of the stamping head 14, reduce the impact force between the stamping head 14 and the lower die holder 50, extend the service life of the stamping head 14, thereby reducing the frequency of replacing the stamping head 14 and reducing production costs. At the same time, by sleeve the protective plate 41 on the outside of the guide post 16, the movement stability of the protective plate 41 is ensured, and the stamping stability and reliability of the stamping head 14 are improved.

[0038] Preferably, the lower die base 50 is provided with a support platform 51 for placing the strip 53. The support platform 51 includes two sets of limiting blocks 511 and a support plate 512. The two sets of limiting blocks 511 are disposed on the lower die base 50, and the support plate 512 is disposed on the bottom of the same side of the two sets of limiting blocks 511, with both ends of the support plate 512 fixedly connected to the limiting blocks 511 respectively. A fixing component 52 for positioning the strip 53 is provided on the other side of the limiting blocks 511. By setting the limiting blocks 511 and the support plate 512, the limiting blocks 511 and the support plate 512 can restrict the position of the strip 53, prevent the strip 53 from shifting during operation, and make the placement and positioning of the strip 53 more accurate and convenient, thereby ensuring the stamping accuracy and quality and improving the product qualification rate. At the same time, by setting the fixing component 52, the position of one side of the strip 53 is limited, so that the strip 53 can be better positioned, making the placement and positioning of the strip 53 more accurate and convenient.

[0039] Furthermore, the fixing component 52 includes a first fixing block 521 and two sets of second fixing blocks 522. One end of the first fixing block 521 is fixedly connected to the upper template 13, and the other end of the first fixing block 521 extends to the outside of the material strip 53 and abuts against that side of the material strip 53. A clamping part 523 for clamping the material strip 53 is provided between the first fixing block 521 and the lower mold base 50.

[0040] Two sets of second fixing blocks 522 are fixedly connected to the upper template 13 at one end, and the two sets of second fixing blocks 522 are located on both sides of the first fixing block 521. The other end of the second fixing block 522 extends to the outside of the material strip 53 and abuts against that side of the material strip 53.

[0041] By setting a first fixing block 521 and two sets of second fixing blocks 522, the material strip 53 can be fixed from multiple directions through the first fixing block 521 and the second fixing block 522, which enhances the firmness of the fixation. At the same time, the top of the material strip 53 is pressed by the pressing part 523 to prevent the material strip 53 from shaking during the operation, so as to ensure the stability of the stamping process and improve product quality.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mold for easy replacement of the stamping head, characterized in that, include: The upper mold base includes a top plate, a connecting plate, and an upper template; the connecting plate is located below the top plate, and the upper template is located below the connecting plate; the connecting plate is provided with a punch head, and a snap-fit ​​structure is provided between the connecting plate and the punch head to initially fix the punch head; A locking assembly is provided between the connecting plate and the upper template for secondary fixation of the punch head; A lower die holder is provided below the upper die holder, and a protective component for protecting the stamping head is provided between the lower die holder and the upper die holder.

2. The die for easy replacement of the stamping head according to claim 1, characterized in that: The buckle structure includes two sets of buckle blocks and two sets of buckle slots; the two sets of buckle blocks are symmetrically arranged on the stamping head. The upper template is provided with mounting holes corresponding to the punch head. Two sets of slots are provided on the side walls of the mounting holes. An inlet is provided between the mounting holes and the slots. The inlet is located below the mounting holes and is connected to the mounting holes. The slots on the punch head enter the slots on both sides of the mounting holes through the inlet and rotate the punch head to initially fix the punch head.

3. The die for easy replacement of the stamping head according to claim 2, characterized in that: The locking assembly includes two sets of locking claws and a push plate; the two sets of locking claws are slidably connected to the connecting plate and symmetrically distributed above the stamping head; the locking claws can engage or disengage from the locking blocks on the stamping head. A locking spring is provided between the locking claw and the connecting plate; the push plate is slidably connected to the connecting plate and is located between the two sets of locking claws, used to control the two sets of locking claws to move away from or closer to each other.

4. The die for easy replacement of the stamping head according to claim 3, characterized in that: The locking claw has a "J" shaped structure. One end of the locking claw near the locking block is provided with a limiting part, which can engage or disengage from the locking block on the stamping head. The other end of the locking claw is provided with a first triangular part.

5. The die for easy replacement of the stamping head according to claim 4, characterized in that: One end of the push plate is provided with a second triangular portion, and both sides of the second triangular portion abut against one side of the first triangular portion of the two sets of locking claws; the other end of the push plate extends to the outside of the connecting plate, and the other end of the push plate is provided with a vertically arranged pulling portion.

6. The die for easy replacement of the stamping head according to claim 5, characterized in that: A positioning block is provided between the upper template and the pulling part; the positioning block is slidably connected to the upper template and a sliding groove is provided between the positioning block and the upper template; a positioning groove is provided at one end of the positioning block near the pulling part, and a stepped structure is formed between the positioning block and the positioning groove; a first magnet is provided in the other end of the positioning groove, and a second magnet is provided on the upper template and magnetically connected to the first magnet, and the second magnet is located between the sliding groove and the pulling part.

7. The die for easy replacement of the stamping head according to claim 1, characterized in that: Four sets of guide pillars are provided between the upper mold base and the lower mold base; The protective assembly includes a protective plate and four sets of circumferentially distributed protective springs; the protective plate is located below the upper template, and the four corners of the protective plate are sleeved onto the guide post through guide sleeves; the protective plate has through holes for the punch head to slide, and a protective pad is located below the protective plate; the four sets of protective springs are located between the protective plate and the upper template.

8. The die for easy replacement of the stamping head according to claim 1, characterized in that: The lower mold base is provided with a support platform for placing the material strip; the support platform includes two sets of limiting blocks and a support plate; the two sets of limiting blocks are provided on the lower mold base, the support plate is provided on the bottom of the same side of the two sets of limiting blocks, and the two ends of the support plate are respectively fixedly connected to the limiting blocks; a fixing component for positioning the material strip is provided on the other side of the limiting blocks.

9. The die for easy replacement of the stamping head according to claim 8, characterized in that: The fixing component includes a first fixing block and two sets of second fixing blocks; one end of the first fixing block is fixedly connected to the upper template, and the other end of the first fixing block extends to the outside of the material strip and abuts against that side of the material strip; a clamping part for clamping the material strip is provided between the first fixing block and the lower mold base. Two sets of second fixing blocks are fixedly connected at one end to the upper template, and the two sets of second fixing blocks are located on both sides of the first fixing block; the other end of the second fixing block extends to the outside of the material strip and abuts against that side of the material strip.

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