Blanking progressive die for brake spring of brake caster
Patent Information
- Application Number
- CN202522227610.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-22
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-10-22
AI Technical Summary
[0003]在进行制动脚轮刹车弹簧片模压制备时，现有的步进模具采用逐步模切的方式，分别进行正向冲孔、切舌、冲长孔、冲导正孔和成型落料工序，其虽然能够保证实现连续的生产落料，但是由于制动脚轮刹车弹簧片其中一端的两侧具有外凸的片状结构，现有的步进模具在实现连续冲压制备的过程中，为了保障外凸片状结构成型的稳定，会冲压切割的结构设置上会增大工件所需的制备空间，这样就致使条料需要浪费整个外凸片状结构占用的水平纵向材料，这样就使得条料浪费；鉴于此，本方案提出一种制动脚轮刹车弹簧片的落料步进模具，用以解决上述问题
[0018]本实用新型进行了切料机构的设置，通过上模圆孔冲针、上模导正孔冲针、上模长孔凸模和上模切舌凸模的对向交错设计，使得保障制动脚轮刹车弹簧片其中一端片状结构模压成型的同时，充分利用了另一端的条料区域，减小了条料连续生产时材料的浪费；且本方案还利用浮升销和上模导向针结构形成条料施工时的定位，确保了正反方向错落排样施工的稳定。
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Figure CN224779091U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of molds, and in particular to a blanking stepping mold for brake spring sheets of brake casters. Background Technology
[0002] Blanking stepping dies are dies used for stamping metal sheets. They are used to gradually stamp and cut parts of the required shape from the metal sheet. In the production of brake spring pads for brake casters, blanking stepping dies are required to achieve continuous production.
[0003] In the molding process of brake spring sheets for casters, existing stepping dies employ a step-by-step die-cutting method, performing forward punching, tongue cutting, elongated hole punching, guide hole punching, and blanking processes separately. While this ensures continuous blanking, the brake spring sheet has convex sheet-like structures on both sides of one end. To ensure the stability of the convex sheet-like structure during continuous stamping, the existing stepping dies require more workpiece preparation space due to the increased horizontal and vertical material occupied by the convex sheet-like structure. This results in wasted material. Therefore, this solution proposes a blanking stepping die for brake spring sheets for casters to address the aforementioned problems. Utility Model Content
[0004] The purpose of this utility model is to provide a blanking stepping mold for brake spring sheets of brake casters, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a blanking stepping die for a brake spring sheet of a brake caster, comprising a lower die plate and an upper die plate, wherein an upper die pad is provided at the bottom end of the upper die plate, a lower die insert is inserted through the middle of the lower die plate, and an upper die clamping plate is provided at the bottom end of the upper die pad, and further comprising:
[0006] A cutting mechanism, one end of which is inserted and connected to the middle of the upper die clamping plate, wherein the cutting mechanism punches holes, cuts tongues, punches elongated holes and punches guide holes in alternating directions;
[0007] The blanking mechanism is located at the bottom of the upper die clamping plate, and the top of the blanking mechanism is inserted and connected to the upper die clamping plate. The blanking mechanism uses the lower die cavity insert for extrusion molding and blanking.
[0008] Preferably, a lower mold pad is provided at the bottom end of the lower mold template, a lower mold base plate is provided at the bottom end of the lower mold pad, and a plurality of lower mold bridge plates are fixedly connected to the bottom end of the lower mold base plate, and the plurality of lower mold bridge plates are symmetrically arranged along the horizontal center of the lower mold base plate.
[0009] Preferably, multiple floating pins are interspersed on both sides of the lower template, the floating pins are used to lift the strip material entering the mold, guide sleeves are interspersed at the four corners of the lower template, and a lower die cutter is sleeved on one end of the lower template.
[0010] Preferably, the feeding mechanism includes:
[0011] The upper mold ejection pad is located below the upper mold clamping plate. Multiple compression springs are provided at the top of the upper mold ejection pad. The compression springs are connected to the sides of the upper mold clamping plate and the upper mold pad away from each other. The ends of the compression springs are fixedly connected to the bottom end of the upper mold tooling plate.
[0012] The upper mold ejection plate is located at the bottom end of the upper mold ejection pad, and the cutting mechanism is vertically connected between the upper mold ejection plate, the upper mold ejection pad, and the upper mold clamping plate.
[0013] Preferably, the upper mold ejector plate, the upper mold ejector pad, and the upper mold clamping plate are vertically connected to a plurality of guide posts, and the bottom of the plurality of guide posts extends through to the bottom of the upper mold ejector plate. A plurality of equal-height sleeves are interlaced between the upper mold ejector plate, the upper mold ejector pad, and the upper mold clamping plate.
[0014] Preferably, a plurality of upper die guide pins are interspersed in the middle of the upper die ejector plate, and a plurality of upper die blanking punches are arranged in the middle of the upper die ejector plate, the upper die ejector pad plate and the upper die clamping plate and between the plurality of upper die guide pins. When the upper die blanking punches move down, they cooperate with the lower die inserts for workpiece forming blanking extrusion.
[0015] Preferably, one end of the upper mold clamping plate is fixedly connected to an upper mold cutter, which is used for cutting the tail material of the strip.
[0016] Preferably, the cutting mechanism includes an upper die round hole punch, an upper die guide hole punch, an upper die elongated hole punch, and an upper die cutting tongue punch. Multiple sets of the upper die round hole punches, multiple sets of upper die guide hole punches, multiple sets of upper die elongated hole punches, and multiple sets of upper die cutting tongue punches are interleaved and connected in the middle of the upper die ejector plate, the upper die ejector pad, and the upper die clamping plate. The cross-section of the upper die cutting tongue punch is "V" shaped, and the opening directions of the multiple sets of upper die cutting tongue punches are staggered and horizontally arranged.
[0017] The technical effects and advantages of this utility model are as follows:
[0018] This utility model incorporates a cutting mechanism. Through the opposing and staggered design of the upper die round hole punch, upper die guide hole punch, upper die elongated hole punch, and upper die cutting tongue punch, it ensures that while one end of the brake spring sheet of the brake caster is molded, the strip material area at the other end is fully utilized, reducing material waste during continuous strip production. Furthermore, this solution utilizes the floating pin and upper die guide pin structure to position the strip material during construction, ensuring the stability of staggered arrangement construction in both directions. Attached Figure Description
[0019] Figure 1 This is an exploded view of the overall structure of this utility model.
[0020] Figure 2 This is a front sectional view showing the structural connection of the upper mold die plate, the cutting mechanism, and the blanking mechanism of this utility model.
[0021] Figure 3 This is a schematic diagram of the structural connection of the lower template part of this utility model.
[0022] Figure 4 This is a side sectional view showing the structural connection of the upper mold die plate, the cutting mechanism, and the blanking mechanism of this utility model.
[0023] Figure 5 This is a side sectional view of the structural connection of the lower template part of this utility model.
[0024] Figure 6 This is a schematic diagram of the die-cutting process of the strip material at the top of the lower die insert.
[0025] In the diagram: 1. Lower die bridge plate; 2. Lower die base plate; 3. Lower die pad plate; 4. Lower die template; 5. Lower die concave insert; 6. Lower die cutter; 7. Floating pin; 8. Guide sleeve; 9. Guide post; 10. Upper die ejector plate; 11. Upper die ejector pad plate; 12. Compression spring; 13. Upper die guide pin; 14. Equal height sleeve; 15. Upper die clamping plate; 16. Upper die cutter; 17. Upper die round hole punch; 18. Upper die guide hole punch; 19. Upper die elongated hole punch; 20. Upper die cutting tongue punch; 21. Upper die blanking punch; 22. Upper die pad plate; 23. Upper die tool plate. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] refer to Figure 1 - Figure 5 ;
[0028] In embodiment one, this utility model provides a blanking stepping mold for brake spring pads of brake casters, including a lower template 4 and an upper mold tooling plate 23. An upper mold pad 22 is provided at the bottom end of the upper mold tooling plate 23, a lower mold pad 3 is provided at the bottom end of the lower template 4, and a lower mold base plate 2 is provided at the bottom end of the lower mold pad 3. A plurality of lower mold bridge plates 1 are fixedly connected to the bottom end of the lower mold base plate 2, and the plurality of lower mold bridge plates 1 are symmetrically arranged along the horizontal center of the lower mold base plate 2.
[0029] It should be noted that holes are provided vertically on the walls of the lower die base plate 2 and the lower die pad plate 3, which are adapted to the shapes of punching holes, cutting tongues, punching elongated holes, punching guide holes and brake spring plates of brake casters. This is to facilitate the provision of cutting space for pressing down and cutting materials, and also to facilitate material unloading. An open hole is provided in the middle of the lower die plate 4.
[0030] Specifically, multiple floating pins 7 are interspersed on both sides of the lower template 4. The floating pins 7 are used to lift the strip material entering the mold. Guide sleeves 8 are interspersed on the four corners of the lower template 4. A lower die cutter 6 is sleeved on one end of the lower template 4.
[0031] The lower mold plate 4 is connected to the middle of the lower mold cavity insert 5, and the bottom of the upper mold pad 22 is provided with an upper mold clamping plate 15.
[0032] It should be noted that the lower die insert 5 is fitted into the open hole of the lower template 4, and an installation port is opened at one end of the lower template 4 (the end of the entire mold). The lower die cutter 6 is installed in the installation port. When the strip moves after being molded, it is supported by the floating pin 7 when it slides.
[0033] In Embodiment 2, this utility model provides a blanking mechanism, which is applied to a blanking stepping mold for a brake spring sheet of a brake caster in Embodiment 1. The blanking mechanism is located at the bottom end of the upper mold clamping plate 15, and the top of the blanking mechanism is inserted and connected to the upper mold clamping plate 15. The lower mold cavity insert 5 of the blanking mechanism is extruded and formed for blanking.
[0034] Specifically, the material feeding mechanism includes:
[0035] The upper mold ejection pad 11 is located below the upper mold clamping plate 15. Multiple compression springs 12 are provided at the top of the upper mold ejection pad 11. The compression springs 12 are connected to the sides of the upper mold clamping plate 15 and the upper mold pad 22 away from each other. The ends of the compression springs 12 are fixedly connected to the bottom end of the upper mold tooling plate 23.
[0036] The upper mold ejection plate 10 is located at the bottom end of the upper mold ejection pad 11.
[0037] It should be noted that the compression spring 12 is used to provide a space for movement between the upper mold ejection pad 11 and the upper mold clamping plate 15, so that after the molding is completed, the compression spring 12 can be used to push and reset, and to store and protect the structure that was cut.
[0038] Furthermore, multiple guide posts 9 are vertically connected to the end corners of the upper mold ejector plate 10, the upper mold ejector pad 11, and the upper mold clamping plate 15, and the bottom of the multiple guide posts 9 extends through to the bottom of the upper mold ejector plate 10. Multiple equal-height sleeves 14 are interlaced between the end corners of the upper mold ejector plate 10, the upper mold ejector pad 11, and the upper mold clamping plate 15.
[0039] Multiple upper die guide pins 13 are interspersed in the middle of the upper die ejector plate 10. Multiple upper die blanking punches 21 are arranged in the middle of the upper die ejector plate 10, the upper die ejector pad 11 and the upper die clamping plate 15 and between the multiple upper die guide pins 13. When the upper die blanking punches 21 move down, they cooperate with the lower die cavity insert 5 for workpiece forming blanking extrusion. One end of the upper die clamping plate 15 is fixedly connected to an upper die cutter 16, which is used for cutting the tail of the strip material.
[0040] It should be noted that a connection port is opened at one end of the upper mold clamping plate 15 (the end of the entire mold). This connection port is located at the same vertical center as the mounting port of the lower mold plate 4. The upper mold cutter 16 is installed in this connection port. When the strip material is transferred to this location, the upper mold cutter 16 and the lower mold cutter 6 work together to cut off the tail material.
[0041] In embodiment three, this utility model provides a cutting mechanism, which is applied to the blanking stepping mold of the brake spring sheet of the brake caster in embodiment one and the blanking mechanism in embodiment two. One end of the cutting mechanism is inserted and connected to the middle of the upper mold clamping plate 15. The cutting mechanism punches holes, cuts tongues, punches long holes and punches guide holes in opposite directions. The cutting mechanism is inserted and connected vertically between the upper mold ejector plate 10, the upper mold ejector pad 11 and the upper mold clamping plate 15.
[0042] Specifically, the cutting mechanism includes an upper die round hole punch 17, an upper die guide hole punch 18, an upper die elongated hole punch 19, and an upper die cutting tongue punch 20. Multiple sets of upper die round hole punches 17, multiple sets of upper die guide hole punches 18, multiple sets of upper die elongated hole punches 19, and multiple sets of upper die cutting tongue punches 20 are interspersed and connected in the middle of the upper die ejector plate 10, the upper die ejector pad plate 11, and the upper die clamping plate 15. The cross-section of the upper die cutting tongue punch 20 is "V" shaped, and the opening directions of the multiple sets of upper die cutting tongue punches 20 are staggered and horizontally arranged.
[0043] It should be noted that the upper die round hole punch 17, the upper die guide hole punch 18, the upper die elongated hole punch 19, and the upper die tongue cutting punch 20 respectively realize punching, punching guide holes, punching elongated holes, and cutting tongues, while the final forming is achieved by the upper die blanking punch 21 in conjunction with the groove wall structure at the top of the lower die concave insert 5.
[0044] refer to Figure 6 As shown, during the operation of this mold, the mold is set with nine stations. The first station completes the workpiece forward punching, tongue cutting, long hole punching and guide hole punching processes. The second station completes the workpiece reverse punching, tongue cutting, long hole punching and guide hole punching processes. The third station completes the workpiece blanking (forward) process. The fourth station completes the workpiece blanking (reverse) process. The fifth station is empty. The sixth station is empty. The seventh station completes the workpiece blanking (reverse) process. The eighth station completes the workpiece blanking (forward) process. The ninth station completes the strip cutting process.
[0045] During operation, the strip material is fed into the mold from the left, lifted and guided by the floating pin 7 to enter the first station. The entire upper mold structure descends. When the upper mold ejector plate 10 gradually approaches the lower mold plate 4, the guide post 9 and the guide sleeve 8 slide and interlock. After the upper mold ejector plate 10 is pressed upward, the upper mold round hole punch 17, the upper mold guide hole punch 18, the upper mold long hole punch 19, and the upper mold cutting tongue punch 20 are exposed. The upper mold round hole punch 17, the upper mold guide hole punch 18, the upper mold long hole punch 19, and the upper mold cutting tongue punch 20 work together with the hole at the top of the lower mold cavity insert 5 to punch and complete the first station process.
[0046] The strip is fed forward (to the right) and positioned by the upper die guide pin 13 and the guide holes on both sides of the workpiece. It then enters the second station. At this time, another set of upper die round hole punches 17, upper die guide hole punches 18, upper die long hole punches 19 and upper die cutting tongue punches 20 work together with the groove wall structure at another position of the lower die insert 5 to complete the second station process.
[0047] The strip continues to be fed forward (to the right) and enters the third station. The upper die blanking punch 21 cooperates with the lower die die insert 5 to complete the blanking (forward) process with the hole that matches the shape of the workpiece. The workpiece falls out from under the lower die bridge plate 1.
[0048] The strip is fed forward (to the right) into the fourth station. Another set of upper die blanking punches 21 cooperate with the lower die die inserts 5 at the opposite position of the workpiece shape hole in the third station to complete the blanking (reverse) process. The workpiece falls out from under the lower die bridge plate 1.
[0049] The strip continues to be fed forward (to the right) into the fifth empty station; the strip continues to be fed forward (to the right) into the sixth empty station.
[0050] The strip continues to be fed forward (to the right) into the seventh station, where the blanking (reverse) process is completed by the upper die blanking punch 21 and the lower die die insert 5, and the workpiece falls out from below the lower die bridge plate 1;
[0051] The strip is fed forward (to the right) into the eighth station, where the blanking (forward) process is completed by the upper die blanking punch 21 and the lower die die insert 5. The workpiece falls out from below the lower die bridge plate 1.
[0052] The strip continues to be fed forward (to the right) into the ninth station, where the upper die cutter 16 and the lower die cutter 6 complete the strip tail cutting process.
[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 blanking stepping die for a brake spring sheet of a brake caster, comprising a lower die plate (4) and an upper die plate (23), wherein an upper die pad (22) is provided at the bottom end of the upper die plate (23), characterized in that, The lower mold plate (4) is connected to the middle of the lower mold cavity insert (5), and the bottom end of the upper mold pad (22) is provided with an upper mold clamping plate (15). It also includes: The material cutting mechanism has one end inserted into the middle of the upper die clamping plate (15), and the material cutting mechanism punches holes, cuts tongues, punches long holes and punches guide holes in alternating directions; The blanking mechanism is located at the bottom of the upper die clamping plate (15), and the top of the blanking mechanism is inserted and connected to the upper die clamping plate (15). The lower die cavity insert (5) of the blanking mechanism is extruded and blanked.
2. The blanking stepping die for a brake spring sheet of a brake caster according to claim 1, characterized in that, The bottom end of the lower template (4) is provided with a lower mold pad (3), the bottom end of the lower mold pad (3) is provided with a lower mold base plate (2), and the bottom end of the lower mold base plate (2) is fixedly connected with multiple lower mold bridge plates (1). The multiple lower mold bridge plates (1) are arranged symmetrically along the horizontal center of the lower mold base plate (2).
3. The blanking stepping die for a brake spring sheet of a brake caster according to claim 2, characterized in that, Multiple floating pins (7) are inserted and connected on both sides of the lower template (4). The floating pins (7) are used to lift the strip material entering the mold. Guide sleeves (8) are inserted and connected at the four corners of the lower template (4). A lower mold cutter (6) is sleeved on one end of the lower template (4).
4. The blanking stepping die for a brake spring sheet of a brake caster according to claim 1, characterized in that, The material feeding mechanism includes: The upper mold ejection pad (11) is located below the upper mold clamping plate (15). The top of the upper mold ejection pad (11) is provided with multiple sets of compression springs (12). The compression springs (12) are connected to the sides of the upper mold clamping plate (15) and the upper mold pad (22) away from each other. The ends of the compression springs (12) are fixedly connected to the bottom end of the upper mold tooling plate (23). The upper mold ejection plate (10) is located at the bottom end of the upper mold ejection pad (11), and the cutting mechanism is vertically connected between the upper mold ejection plate (10), the upper mold ejection pad (11), and the upper mold clamping plate (15).
5. The blanking stepping die for a brake spring sheet of a brake caster according to claim 4, characterized in that, The upper mold ejector plate (10), the upper mold ejector pad (11) and the upper mold clamping plate (15) are vertically connected by multiple guide posts (9), and the bottom of the multiple guide posts (9) extends through to the bottom of the upper mold ejector plate (10). Multiple equal-height sleeves (14) are interlaced between the upper mold ejector plate (10), the upper mold ejector pad (11) and the upper mold clamping plate (15).
6. The blanking stepping die for a brake spring sheet of a brake caster according to claim 5, characterized in that, Multiple upper die guide pins (13) are interspersed in the middle of the upper die ejector plate (10). Multiple upper die blanking punches (21) are arranged in the middle of the upper die ejector plate (10), the upper die ejector pad (11) and the upper die clamping plate (15) and between the multiple upper die guide pins (13). When the upper die blanking punches (21) move down, they cooperate with the lower die insert (5) for workpiece forming blanking extrusion.
7. The blanking stepping die for a brake spring sheet of a brake caster according to claim 6, characterized in that, One end of the upper mold clamping plate (15) is fixedly connected to an upper mold cutter (16), which is used to cut off the tail material of the strip.
8. The blanking stepping die for a brake spring sheet of a brake caster according to claim 4, characterized in that, The cutting mechanism includes an upper die round hole punch (17), an upper die guide hole punch (18), an upper die elongated hole punch (19), and an upper die cutting tongue punch (20). Multiple sets of the upper die round hole punch (17), multiple sets of upper die guide hole punch (18), multiple sets of upper die elongated hole punch (19), and multiple sets of upper die cutting tongue punch (20) are interspersed in the middle of the upper die ejector plate (10), the upper die ejector pad plate (11), and the upper die clamping plate (15). The cross-section of the upper die cutting tongue punch (20) is "V" shaped, and the opening directions of the multiple sets of upper die cutting tongue punches (20) are staggered and horizontally arranged.