Burr punching die
By designing a burr punching mold containing a spring and a fixed seat, the problem of the workpiece being stuck on the lower die after being punched and cut is solved, and the automatic mold release of the workpiece and the improvement of working efficiency is achieved.
Patent Information
- Application Number
- CN202421425849.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The existing burr punching dies are prone to stuck on the lower die after the workpiece is punched and cut, resulting in inconvenient demolding and affecting the working efficiency of the mold.
A burr punching die is designed, including a base, support block, lower die, upper die, upper die, upper punch and lower punch. Through the cooperation of the spring and the fixing seat, the automatic mold release of the workpiece is achieved.
Through the automatic mold release mechanism, the working efficiency of the mold is improved and the auxiliary mold release requirement of manual or mechanical equipment is reduced.
Smart Images
Figure CN222817738U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of burr punching and cutting dies, in particular to a burr punching and cutting die. Background Art
[0002] The workpiece is placed in the die and the punch inside the die is used to punch and cut the workpiece. The workpiece can be processed and formed, or the burrs on the surface of the workpiece can be punched and removed. The punching die is a metal forming processing equipment.
[0003] Existing burr punching dies, such as the punching die proposed in patent application number "CN202121839615.5", improve the punching stability of the punching die through structures such as an upper die, a lower die, a pressure die, and a buffer block.
[0004] However, the workpiece is easily stuck on the lower die after punching, which makes it inconvenient to demould the workpiece. Manual or mechanical equipment is required to assist in demoulding to facilitate the removal of the workpiece, which affects the working efficiency of the mold. Therefore, a burr punching die is proposed. Utility Model Content
[0005] The utility model aims to provide a burr punching die to solve the problems raised in the above background technology.
[0006] The purpose of the utility model can be achieved through the following technical solutions:
[0007] A burr punching die, comprising a base, wherein two groups of support blocks are symmetrically fixedly connected to the upper end of the base, a lower die is fixedly connected to the upper ends of the two groups of support blocks, a punching opening is opened through the middle of the lower die, an upper die is plugged into the upper end of the lower die, and an upper punch is fixedly connected to the middle of the lower end of the upper die;
[0008] The upper end of the base is fixedly connected to multiple groups of springs, which are all located between the two groups of support blocks, and the upper ends of the multiple groups of springs are commonly fixedly connected to a fixed seat, which is slidably connected between the two groups of support blocks. The upper end of the fixed seat is fixedly connected to a lower punch, which is located in the punching opening, and the upper punch cooperates with the lower punch. Multiple groups of ejectors are plugged into the base, and the multiple groups of ejectors all penetrate the fixed seat and the lower punch.
[0009] Preferably, the lower punch is provided with a plurality of through openings, the plurality of through openings all penetrate the fixing seat, and the upper ends of the plurality of ejector pins are respectively inserted into the plurality of through openings.
[0010] Preferably, a cavity is opened in the middle of the lower end of the base, and the lower ends of the plurality of groups of ejector pins are fixedly connected to limit blocks, and the plurality of groups of limit blocks are clamped in the cavity.
[0011] Preferably, the upper punch has multiple groups of plug interfaces at one end close to the lower punch, the multiple groups of plug interfaces correspond to the multiple groups of through holes respectively, the multiple groups of ejector pins are respectively plugged into and matched with the multiple groups of plug interfaces, the upper punch has multiple groups of discharge holes inside, the multiple groups of discharge holes are respectively connected with the multiple groups of plug interfaces, and the multiple groups of discharge holes all pass through the upper die.
[0012] Preferably, a plurality of guide cylinders are fixedly connected to the lower die, a plurality of guide posts are fixedly connected to the lower end of the upper die, and the plurality of guide posts are respectively plug-fitted with the plurality of guide cylinders.
[0013] Preferably, the upper punch side wall and the lower punch side wall are both provided with a slide groove, the punching cut side wall is fixedly connected with a guide rail, and the guide rail is slidably connected to the slide groove.
[0014] Beneficial effects of the utility model:
[0015] The utility model drives the upper punch through the upper die to punch the lower punch in the lower die, so that the workpiece located between the upper die and the lower die is punched and cut, the fixed seat slides downward to squeeze the spring, and the ejector pin penetrates the fixed seat and the lower punch. When the upper die is lifted with the upper punch, the spring squeezes the fixed seat and the lower punch to demould the workpiece, thereby improving the working efficiency of the die. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the guide tube of the utility model;
[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the punching cutout of the utility model;
[0020] Figure 4 This is a schematic diagram of the structure of the lower punch of the utility model;
[0021] The reference numerals in the figures are as follows:
[0022] 2. Upper die; 3. Upper punch; 4. Discharge hole; 5. Insertion port; 6. Punch cutout; 7. Guide column; 8. Guide cylinder; 9. Lower die; 10. Support block; 11. Base; 12. Cavity; 13. Fixed seat; 14. Ejector pin; 15. Limit block; 16. Spring; 17. Lower punch; 18. Through-hole; 19. Slide groove; 20. Guide rail. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. 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] A burr punching die, such as Figure 1-Figure 4 As shown, it includes a base 11, and two groups of support blocks 10 are symmetrically fixedly connected to the upper end of the base 11, and the upper ends of the two groups of support blocks 10 are commonly fixedly connected to a lower mold 9, a punching opening 6 is opened through the middle of the lower mold 9, an upper mold 2 is inserted into the upper end of the lower mold 9, and an upper punch 3 is fixedly connected to the middle of the lower end of the upper mold 2. The base 11 is fixed, and the upper mold 2 is driven to rise and fall by mechanical equipment.
[0025] The upper end of the base 11 is fixedly connected to multiple groups of springs 16, which are all located between the two groups of support blocks 10, and the upper ends of the multiple groups of springs 16 are commonly fixedly connected to a fixed seat 13, which is slidably connected between the two groups of support blocks 10, and the upper end of the fixed seat 13 is fixedly connected to a lower punch 17, which is located in the punching cut 6, and the upper punch 3 cooperates with the lower punch 17. Multiple groups of ejectors 14 are inserted into the base 11, and the multiple groups of ejectors 14 all penetrate the fixed seat 13 and the lower punch 17.
[0026] The workpiece is placed on the punching opening 6, and the upper die 2 drives the upper punch 3 to punch the lower punch 17 in the lower die 9, so that the workpiece between the upper die 2 and the lower die 9 is punched. During punching, the lower punch 17 and the fixed seat 13 slide downward to squeeze the spring 16. The spring 16 has a certain degree of buffering effect on the punching force. The ejector 14 penetrates the fixed seat 13, the lower punch 17 and the workpiece. The workpiece is located in the punching opening 6. The ejector 14 can punch and remove burrs from the inner hole of the workpiece, and when the upper die 2 is lifted with the upper punch 3, the spring 16 squeezes the fixed seat 13 and the lower punch 17 to lift, so that the workpiece and the ejector 14 slide upward relative to each other and separate, and the workpiece separates from the punching opening 6, thereby demoulding, thereby improving the working efficiency of the mold.
[0027] The lower punch 17 is provided with a plurality of through openings 18 , which all penetrate the fixing seat 13 , and the upper ends of the plurality of ejector pins 14 are respectively inserted into the plurality of through openings 18 .
[0028] like Figure 3 As shown, the through hole 18 facilitates the ejector pin 14 to penetrate the fixing seat 13 and the lower punch 17 .
[0029] The base 11 has a cavity 12 in the middle of the lower end thereof. The lower ends of the plurality of ejector pins 14 are fixedly connected to limit blocks 15 , and the plurality of limit blocks 15 are clamped in the cavity 12 .
[0030] like Figure 3 As shown, the ejector pin 14 is installed upwards for easy assembly and disassembly, and the limit block 15 prevents the ejector pin 14 from being separated from the lower die 9.
[0031] The upper punch 3 has a plurality of plug-in ports 5 at one end close to the lower punch 17, and the plurality of plug-in ports 5 correspond to the plurality of through ports 18 respectively. The plurality of ejector pins 14 are respectively plugged with the plurality of plug-in ports 5. The upper punch 3 has a plurality of discharge holes 4 inside, and the plurality of discharge holes 4 are respectively connected with the plurality of plug-in ports 5, and the plurality of discharge holes 4 all penetrate the upper die 2.
[0032] like Figure 3 As shown, during punching, the ejector pin 14 penetrates the lower punch 17 and the workpiece enters the insertion port 5 to prevent the ejector pin 14 from being broken during the punching process. The ejector pin 14 punches and removes the burrs inside the workpiece and discharges the burrs from the discharge hole 4.
[0033] The lower die 9 is fixedly connected with a plurality of guide cylinders 8 , and the lower end of the upper die 2 is fixedly connected with a plurality of guide posts 7 , which are respectively plugged and matched with the plurality of guide cylinders 8 .
[0034] like Figure 2 As shown, the guide cylinder 8 and the guide column 7 define the punching path between the upper die 2 and the lower die 9 to prevent the paths from being offset.
[0035] The side walls of the upper punch 3 and the lower punch 17 are both provided with a slide groove 19 , and the side wall of the punching cutout 6 is fixedly connected with a guide rail 20 , which is slidably connected with the slide groove 19 .
[0036] like Figure 1 , Figure 4 As shown, the slide groove 19 and the guide rail 20 limit the punching paths of the upper punch 3 and the lower punch 17 to be straight, thereby preventing the positions of the two from being offset and improving the punching accuracy.
[0037] The working principle of a burr punching die provided by the utility model is as follows:
[0038] During operation, the workpiece is placed on the punching opening 6, and the upper die 2 drives the upper punch 3 to punch the lower punch 17 in the lower die 9, so that the workpiece between the upper die 2 and the lower die 9 is punched. During punching, the lower punch 17 and the fixed seat 13 slide downward to squeeze the spring 16, and the ejector 14 penetrates the fixed seat 13, the lower punch 17 and the workpiece. The workpiece is located in the punching opening 6. When the upper die 2 is lifted with the upper punch 3, the spring 16 squeezes the fixed seat 13 and the lower punch 17 to lift, and the workpiece and the ejector 14 slide upward relative to each other to separate, and the workpiece is separated from the punching opening 6 and demolded, thereby improving the working efficiency of the mold.
[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
Claims
1. A burr punching die, comprising a base (11), characterized in that: The upper end of the base (11) is symmetrically fixed with two groups of support blocks (10), the upper ends of the two groups of support blocks (10) are commonly fixed with a lower die (9), a punching notch (6) is provided through the middle of the lower die (9), an upper die (2) is inserted into the upper end of the lower die (9), and an upper punch (3) is fixed to the middle of the lower end of the upper die (2); The upper end of the base (11) is fixedly connected to a plurality of groups of springs (16), the plurality of groups of springs (16) are all located between the two groups of support blocks (10), and the upper ends of the plurality of groups of springs (16) are commonly fixedly connected to a fixed seat (13), the fixed seat (13) is slidably connected between the two groups of support blocks (10), the upper end of the fixed seat (13) is fixedly connected to a lower punch (17), the lower punch (17) is located in the punching cutout (6), the upper punch (3) cooperates with the lower punch (17), and the base (11) is plugged with a plurality of groups of ejector pins (14), the plurality of groups of ejector pins (14) all penetrate the fixed seat (13) and the lower punch (17).
2. A burr punching die according to claim 1, characterized in that: The lower punch (17) is provided with a plurality of through openings (18), the plurality of through openings (18) all penetrate the fixing seat (13), and the upper ends of the plurality of ejector pins (14) are respectively inserted into the plurality of through openings (18).
3. A burr punching die according to claim 1, characterized in that: A cavity (12) is provided in the middle of the lower end of the base (11), and the lower ends of the plurality of groups of ejector pins (14) are fixedly connected to limit blocks (15), and the plurality of groups of limit blocks (15) are clamped in the cavity (12).
4. A burr punching die according to claim 2, characterized in that: The upper punch (3) has a plurality of plug-in ports (5) at one end close to the lower punch (17), the plurality of plug-in ports (5) respectively corresponding to the plurality of through-holes (18), the plurality of ejector pins (14) respectively plugging with the plurality of plug-in ports (5), the upper punch (3) has a plurality of discharge holes (4) inside, the plurality of discharge holes (4) are respectively connected to the plurality of plug-in ports (5), and the plurality of discharge holes (4) all penetrate the upper die (2).
5. The burr punching die according to claim 1, characterized in that: The lower mold (9) is fixedly connected to a plurality of guide cylinders (8), and the lower end of the upper mold (2) is fixedly connected to a plurality of guide columns (7), and the plurality of guide columns (7) are respectively plugged and matched with the plurality of guide cylinders (8).
6. The burr punching die according to claim 1, characterized in that: The side walls of the upper punch (3) and the lower punch (17) are both provided with a slide groove (19), the side wall of the punching cutout (6) is fixedly connected with a guide rail (20), and the guide rail (20) is slidably connected to the slide groove (19).