A punching and flanging device

Abstract

This application provides a punching and bending device, relating to the field of punching and bending technology. It includes a lower die base and an upper die base for connection with a punching head. The lower die base is equipped with a punch and an outer demolding assembly, while the upper die base is equipped with an inner demolding assembly and several punching posts. The inner demolding assembly cooperates with the punch to apply pressure and bend the workpiece placed on the punch. The outer demolding assembly cooperates with the punching posts to punch the bent workpiece. This invention integrates the inner demolding assembly and punching posts in the upper die base and the punch and outer demolding assembly in the lower die base, completing bending and punching sequentially in one punching stroke. Compared with existing technologies, this reduces the clamping and transfer of sheet metal, reduces process turnaround time, improves production efficiency, and simultaneously reduces the number of sheet metal processing positioning steps, thus improving processing accuracy.

Description

Technical Field

[0001] This application relates to the field of punching and folding technology, and more specifically, to a punching and folding device. Background Technology

[0002] In the field of sheet metal processing, punching and bending are common key processing steps, widely used in industries such as electronic device housing manufacturing, automotive parts production, and building decorative component processing. Currently, in traditional sheet metal processing, punching and bending are mostly completed using separate equipment. For example, during punching, a separate punch press is used to form the required holes in the sheet metal using a die; while for bending, the punched sheet metal needs to be transferred to a bending machine, repositioned, and then bent.

[0003] However, this separate processing method has many drawbacks. Not only are the procedures cumbersome, requiring multiple clamping and transfer of the sheet metal, resulting in low production efficiency, but multiple positioning can also lead to cumulative errors, seriously affecting processing accuracy and making it difficult to meet the production needs of high-precision products. Summary of the Invention

[0004] The purpose of this application is to provide a punching and folding device that can solve the technical problems raised in the background art.

[0005] This application provides a punching and bending device, including a lower die base and an upper die base for connecting to a punching head. The lower die base is provided with a punch and an outer demolding assembly, and the upper die base is provided with an inner demolding assembly and a plurality of punching posts. The inner demolding assembly cooperates with the punch to apply pressure to the workpiece placed on the punch and bend it, and the outer demolding assembly cooperates with the punching posts to punch the bent workpiece.

[0006] Furthermore, the outer ejector assembly includes a lower clamping plate, an outer ejector plate, and multiple lower springs. The lower clamping plate is fixed to the top of the lower die base, and the punch head is fixed to the top of the lower clamping plate. The outer ejector plate is provided with a first clearance through hole adapted to the punch head, and the punch head is located in the first clearance through hole. The lower die base is provided with multiple first spring grooves around the punch head. The lower clamping plate is provided with second clearance through holes corresponding to the first spring grooves one by one. The lower springs correspond to the first spring grooves one by one and are located in the first spring grooves. The lower end of the lower spring is connected to the inner bottom of the first spring groove, and the upper end of the lower spring passes through the second clearance through hole and is connected to the bottom of the outer ejector plate.

[0007] Furthermore, a first guide post is fixedly provided at each of the four corners of the top of the lower clamping plate, and a first guide hole corresponding to each of the first guide posts is provided on the outer release plate. A first guide sleeve is fixedly provided in the first guide hole, and the first guide sleeve is movably sleeved on the first guide post.

[0008] Furthermore, the inner ejection assembly includes an upper clamping plate, an inner ejection plate, an upper template, and multiple upper springs. The upper clamping plate is fixed to the bottom of the upper mold base, and the upper template is fixed to the bottom of the upper clamping plate. The upper template has a third clearance through hole adapted to the inner ejection plate. The inner ejection plate is movably disposed within the third clearance through hole. The upper mold base has multiple second spring grooves, and the upper clamping plate has fourth clearance through holes corresponding to the second spring grooves one by one. The upper springs correspond to the second spring grooves one by one. The upper end of the upper spring groove is connected to the inner top of the second spring groove, and the lower end of the upper spring passes through the fourth clearance through hole and connects to the top of the inner ejection plate. The bottom of the inner ejection plate has a mold cavity adapted to the top contour of the punch.

[0009] Furthermore, a plurality of second guide posts are uniformly fixed on the top of the inner ejector plate, and the upper clamping plate is provided with second guide holes adapted to the second guide posts. The bottom of the upper mold base is provided with guide grooves corresponding to the second guide holes one by one. The upper end of the second guide post can movably pass through the second guide hole and extend into the guide groove.

[0010] Furthermore, the top of the punch is higher than the top of the outer ejector plate, and the bottom of the inner ejector plate is lower than the bottom of the upper template.

[0011] Furthermore, the upper end of the punching post is fixed to the bottom of the upper clamping plate, the inner ejector plate is provided with a fifth clearance through hole adapted to the punching post, the punching post can movably pass through the fifth clearance through hole, the outer ejector plate is provided with a material leakage hole corresponding to the punching post, the material leakage hole passes through the outer ejector plate, the lower clamping plate and the lower die base.

[0012] Furthermore, multiple pads are fixed at equal intervals at the bottom of the lower mold base.

[0013] The beneficial effects of this utility model are: This invention integrates an inner demolding component and a punching post in the upper mold base, and a punch and an outer demolding component in the lower mold base. It completes the folding and punching in one stamping stroke. Compared with the prior art, it reduces the clamping and transfer of sheet metal, reduces process turnaround time, improves production efficiency, and reduces the number of sheet metal processing and positioning steps, thereby improving processing accuracy. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 These are schematic diagrams of structures in some embodiments of this application; Figure 2 This is a cross-sectional view of the compressed state in some embodiments of this application; Figure 3 This is a structural breakdown diagram of some embodiments of this application; The reference numerals in the attached figures are as follows: 1. Lower mold base; 11. First spring groove; 2. Upper mold base; 21. Second spring groove; 3. Punch; 4. Outer demolding assembly; 41. Lower clamping plate; 411. Second clearance through hole; 412. First guide post; 42. Outer demolding plate; 421. First clearance through hole; 422. First guide hole; 423. Material leakage hole; 43. Lower spring; 5. Inner demolding assembly; 51. Upper clamping plate; 511. Fourth clearance through hole; 512. Second guide hole; 52. Inner demolding plate; 521. Mold cavity; 522. Second guide post; 523. Fifth clearance through hole; 53. Upper template; 531. Third clearance through hole; 54. Upper spring; 6. Punching post; 7. First guide sleeve; 8. Spacer block. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0019] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0020] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0021] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Specific Implementation

[0022] like Figure 1-3 As shown, this application provides a punching and bending device, including a lower die base 1 and an upper die base 2 for connection with a punching head. The lower die base 1 is provided with a punch 3 and an outer demolding assembly 4, and the upper die base 2 is provided with an inner demolding assembly 5 and a plurality of punching pins 6. The inner demolding assembly 5 cooperates with the punch 3 to apply pressure to the workpiece placed on the punch 3 for bending, and the outer demolding assembly 4 cooperates with the punching pins 6 to punch the bent workpiece. The lower die base 1 provides a supporting base for the workpiece, and the upper die base 2 carries the inner demolding assembly 5 and the punching pins 6 to perform the punching and punching actions. By integrating the inner demolding assembly 5 and the punching pins 6 in the upper die base 2 and integrating the punch 3 and the outer demolding assembly 4 in the lower die base 1, bending and punching are completed sequentially in one punching stroke. Compared with the prior art, this reduces the clamping and transfer of sheet metal, reduces process turnaround time, improves production efficiency, and reduces the number of sheet metal processing positioning times, thereby improving processing accuracy.

[0023] like Figure 2-3As shown, the outer ejector assembly 4 includes a lower clamping plate 41, an outer ejector plate 42, and multiple lower springs 43. The lower clamping plate 41 is fixed to the top of the lower mold base 1, and the punch head is fixed to the top of the lower clamping plate 41. The outer ejector plate 42 is provided with a first clearance through hole 421 adapted to the punch head, and the punch head is located in the first clearance through hole 421. Multiple first spring grooves 11 are provided around the punch head on the lower mold base 1, and the lower clamping plate 41 is provided with first spring grooves 11 corresponding to the first spring grooves 11 one by one. The second clearance through hole 411 has a lower spring 43 corresponding to the first spring groove 11. The lower spring 43 is located inside the first spring groove 11, and the lower end of the lower spring 43 is connected to the inner bottom of the first spring groove 11. The upper end of the lower spring 43 passes through the second clearance through hole 411 and is connected to the bottom of the outer ejector plate 42. The buffering effect of the lower spring 43 allows the outer ejector plate 42 to slowly lift the workpiece during demolding, rather than impacting it hard, thus avoiding workpiece deformation or surface scratches caused by traditional rigid demolding.

[0024] like Figure 3 As shown, a first guide post 412 is fixed at each of the four corners of the top of the lower clamping plate 41. The outer release plate 42 is provided with a first guide hole 422 corresponding to the first guide post 412. A first guide sleeve 7 is fixed in the first guide hole 422 and is movably sleeved on the first guide post 412. The arrangement of the first guide post 412, the first guide hole 422 and the first guide sleeve 7 makes the lower clamping plate 41 more stable when moving up and down, avoiding processing errors caused by the shaking of the outer release plate 42 and increasing the risk of scrapping the metal sheet to be processed.

[0025] like Figure 2-3 As shown, the inner demolding assembly 5 includes an upper clamping plate 51, an inner demolding plate 52, an upper template 53, and multiple upper springs 54. The upper clamping plate 51 is fixed to the bottom of the upper mold base 2, and the upper template 53 is fixed to the bottom of the upper clamping plate 51. The upper template 53 has a third clearance through hole 531 that matches the inner demolding plate 52. The inner demolding plate 52 is movably disposed within the third clearance through hole 531. The upper mold base 2 has multiple second spring grooves 21, and the upper clamping plate 51 has fourth clearance through holes 511 that correspond one-to-one with the second spring grooves 21. The upper springs 54 correspond one-to-one with the second spring grooves 21. The upper end is connected to the inner top of the second spring groove 21, and the lower end of the upper spring 54 passes through the fourth clearance through hole 511 and is connected to the top of the inner ejector plate 52. The bottom of the inner ejector plate 52 is provided with a mold cavity 521 that matches the top contour of the punch 3. Specifically, the upper mold base 2 drives the upper clamping plate 51 and the upper template 53 to move downward as a whole. The inner ejector plate 52 first contacts the surface of the workpiece and presses the workpiece onto the punch 3 through the mold cavity 521 to form a pre-positioning constraint. The upper mold base 2 continues to move downward, the upper spring 54 is compressed, and the inner ejector plate 52 moves downward relative to the upper template 53. The mold cavity 521 and the punch 3 cooperate to complete the folding and forming.

[0026] like Figure 3As shown, a plurality of second guide posts 522 are uniformly fixed on the top of the inner ejector plate 52. The upper clamping plate 51 is provided with second guide holes 512 that are adapted to the second guide posts 522. The bottom of the upper mold base 2 is provided with guide grooves (not shown in the figure) that correspond one-to-one with the second guide holes 512. The upper end of the second guide post 522 can move through the second guide hole 512 and extend into the guide groove. The arrangement of the second guide post 522, the second guide hole 512 and the guide groove makes the inner ejector plate 52 move up and down stably.

[0027] like Figure 2 As shown, the top of the punch 3 is higher than the top of the outer stripper plate 42, and the bottom of the inner stripper plate 52 is lower than the bottom of the upper die plate 53. During the downward movement of the upper die base 2, the inner stripper plate 52 contacts the workpiece in advance to form a pre-position, ensuring the stamping stability of the metal sheet to be processed.

[0028] like Figure 2-3 As shown, the upper end of the punching post 6 is fixed to the bottom of the upper clamping plate 51. The inner ejector plate 52 is provided with a fifth clearance through hole 523 that is adapted to the punching post 6. The punching post 6 can move through the fifth clearance through hole 523. The outer ejector plate 42 is provided with a material leakage hole 423 that corresponds to the punching post 6. The material leakage hole 423 passes through the outer ejector plate 42, the lower clamping plate 41 and the lower die base 1 to form a vertical through channel. The waste material falls directly by gravity. The diameter of the material leakage hole 423 is larger than that of the punching post 6 to avoid the waste material getting stuck.

[0029] like Figure 1-3 As shown, multiple pads 8 are fixed at equal intervals at the bottom of the lower mold base 1. The material leakage hole 423 is staggered with the pad 8. Specifically, there are three pads 8. The material leakage hole 423 is located between two adjacent pads 8. By placing the receiving frame between two adjacent pads 8, the waste material falling from the material leakage hole 423 can be collected, thus avoiding the waste material from affecting the environmental hygiene of the work area.

[0030] Working principle: In use, the lower die base 1 is fixed on the worktable of the stamping equipment, and the upper die base 2 is connected to the stamping head of the stamping equipment. The stamping head drives the upper die base 2 to move up and down. Initially, the upper die base 2 is in the standby position (not pressed down) along with the stamping head. The metal sheet to be processed is placed on the punch 3 of the lower die base 1. The upper die base 2 moves down connected to the stamping head. The inner ejector plate 52 of the inner ejector assembly 5 first contacts and presses the metal sheet through the bottom mold cavity 521 to form a pre-position. As the upper die base 2 continues to move down, the upper spring 54 is compressed, and the inner ejector plate 52 moves relative to the upper template 53. The mold cavity 521 and the punch 3 cooperate to complete the folding. After folding, the upper die base 2 continues to move down, and the punching post 6 passes through the fifth clearance through hole 523 of the inner ejector plate 52 and cooperates with the outer ejector assembly 4. Under the stamping pressure, the outer ejector plate 42 compresses the lower spring 43 and moves downward to make way for the punching post 6 and provide support, thus completing the punching of the metal sheet to be processed. During this process, the first guide post 412 at the top of the lower clamping plate 41 cooperates with the first guide sleeve 7 of the outer ejector plate 42, and the second guide post 522 at the top of the inner ejector plate 52 cooperates with the guide groove of the upper clamping plate 51 to ensure that the outer ejector plate 42 and the inner ejector plate 52 move vertically and stably. The waste generated by punching falls down by gravity through the discharge hole 423 of the lower clamping plate 41 and the lower die base 1. The discharge hole 423 is misaligned with the bottom pad 8 of the lower die base 1 to facilitate waste collection. After the stamping is completed, the upper die base 2 moves upward, the upper spring 54 pushes the inner ejector plate 52 to demold, and the lower spring 43 pushes the outer ejector plate 42 to push the workpiece out of the punch 3, thus completing the entire processing flow.

[0031] In order to better showcase the details, Figure 3 Only one of the middle and lower springs 43 and the upper spring 54 is shown.

[0032] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A punching and folding device, characterized in that: It includes a lower die base and an upper die base for connecting to a punch head. The lower die base is provided with a punch and an outer demolding assembly. The upper die base is provided with an inner demolding assembly and a plurality of punching pins. The inner demolding assembly cooperates with the punch to apply pressure and fold the workpiece placed on the punch head. The outer demolding assembly cooperates with the punching pins to punch the folded workpiece.

2. The punching and folding device according to claim 1, characterized in that: The outer ejector assembly includes a lower clamping plate, an outer ejector plate, and multiple lower springs. The lower clamping plate is fixed to the top of the lower die base, and the punch head is fixed to the top of the lower clamping plate. The outer ejector plate has a first clearance through hole adapted to the punch head, and the punch head is located in the first clearance through hole. The lower die base has multiple first spring grooves arranged around the punch head. The lower clamping plate has second clearance through holes corresponding to the first spring grooves one by one. The lower springs correspond to the first spring grooves one by one and are located in the first spring grooves. The lower ends of the lower springs are connected to the inner bottom of the first spring grooves, and the upper ends of the lower springs pass through the second clearance through holes and are connected to the bottom of the outer ejector plate.

3. The punching and folding device according to claim 2, characterized in that: The lower clamping plate is fixedly provided with a first guide post at each of the four corners of the top. The outer release plate is provided with a first guide hole corresponding to the first guide post. A first guide sleeve is fixedly provided in the first guide hole and is movably sleeved on the first guide post.

4. The punching and folding device according to claim 3, characterized in that: The inner ejection assembly includes an upper clamping plate, an inner ejection plate, an upper template, and multiple upper springs. The upper clamping plate is fixed to the bottom of the upper mold base, and the upper template is fixed to the bottom of the upper clamping plate. The upper template has a third clearance through hole adapted to the inner ejection plate. The inner ejection plate is movably disposed in the third clearance through hole. The upper mold base has multiple second spring grooves, and the upper clamping plate has a fourth clearance through hole corresponding to each of the second spring grooves. The upper springs correspond to the second spring grooves one by one. The upper end of the upper spring groove is connected to the inner top of the second spring groove, and the lower end of the upper spring passes through the fourth clearance through hole and is connected to the top of the inner ejection plate. The bottom of the inner ejection plate has a mold cavity adapted to the top contour of the punch.

5. A punching and folding device according to claim 4, characterized in that: The top of the inner ejector plate is uniformly fixed with a plurality of second guide posts, the upper clamping plate is provided with second guide holes adapted to the second guide posts, the bottom of the upper mold base is provided with guide grooves corresponding to the second guide posts one by one, and the upper end of the second guide post can movably pass through the second guide hole and extend into the guide groove.

6. A punching and folding device according to claim 5, characterized in that: The top of the punch is higher than the top of the outer ejector plate, and the bottom of the inner ejector plate is lower than the bottom of the upper template.

7. A punching and folding device according to claim 6, characterized in that: The upper end of the punching post is fixed to the bottom of the upper clamping plate. The inner ejector plate is provided with a fifth clearance through hole adapted to the punching post. The punching post can movably pass through the fifth clearance through hole. The outer ejector plate is provided with material leakage holes corresponding to the punching post. The material leakage holes pass through the outer ejector plate, the lower clamping plate, and the lower die base.

8. A punching and folding device according to claim 7, characterized in that: Multiple pads are fixed at equal intervals at the bottom of the lower mold base.

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