Spring forming die

Abstract

The utility model discloses a spring forming die. The device is fixed on processing equipment and comprises a fixed part and a displacement part, the fixed part is fixed on processing equipment, and under the driving of a displacement device of the processing equipment, the displacement part ascends and descends and is repeatedly closed with the fixed part; and the fixed part and the displacement part are respectively provided with positioning holes and positioning columns among the five stations. The fixing part comprises a lower die base and a lower die plate stacked on the top of the lower die base. The displacement part comprises an upper die base, and a plurality of layers of upper die plates and demolding plates which are sequentially stacked on the top of the upper die base. According to the spring forming die provided by the scheme, full-process automation of positioning hole machining, elastic sheet stamping, crease forming, waste material cutting, right-angle bending and separation blanking is achieved through five-station collaborative operation, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This solution relates to the field of spring manufacturing technology, and in particular to a spring forming mold. Background Technology

[0002] Double cantilever beam springs, a type of spring with a unique configuration, have a rectangular main body with bent sides, each bent section housing a spring clip. This special structure gives double cantilever beam springs the potential for wide application in many fields such as electronic equipment and precision instruments. In electronic equipment, double cantilever beam springs undertake key functions such as connection, buffering, and signal transmission; in the field of precision instruments, their precise elastic deformation characteristics provide important support for the high-precision operation of instruments.

[0003] However, in existing technologies, the molding process of double cantilever beam springs mainly relies on traditional molds. These traditional molds have revealed a series of problems in practical applications. From a structural design perspective, their design approach is relatively traditional and does not adequately consider the complex molding requirements of springs. This results in the spring molding accuracy failing to reach ideal levels during actual production, making it difficult to guarantee the strict symmetry and precise dimensional accuracy required by double cantilever beams. This not only affects the spring's fit and compatibility in the product but may also adversely impact the overall performance of the product. Furthermore, in the critical stage of spring molding, traditional molds lack sufficient control over material flowability and cannot provide an optimized molding environment, leading to defects in the spring's molding quality, such as poor surface flatness and uneven internal stress distribution, severely affecting the spring's quality and performance.

[0004] Therefore, a spring forming mold is needed that has the ability to perform multi-station continuous processing, precise positioning and automated production, so as to ensure the production quality of springs and improve the production efficiency of springs. Summary of the Invention

[0005] To address the aforementioned issues, this solution provides a spring forming mold that, through a positioning system and multi-station collaborative operation, enables high-precision, automated, and continuous production of double cantilever beam springs, thus resolving the problems of poor positioning accuracy and low production efficiency associated with traditional molds.

[0006] To achieve the above objectives, the technical solution adopted in this invention is as follows: a spring forming mold, fixed on a processing equipment, comprising a fixing part and a displacement part; the fixing part is fixed on the processing equipment, and under the drive of the displacement device of the processing equipment, the displacement part rises and falls and repeatedly closes with the fixing part; the fixing part and the displacement part are respectively provided with positioning holes and positioning posts between five stations. The fixing part includes a lower mold base and a lower template stacked on top of the lower mold base; the displacement part includes an upper mold base and multiple layers of upper templates and a release template stacked sequentially on top of the upper mold base.

[0007] Furthermore, the upper template includes a cutter head limiting port and an elastic element limiting port; the ejector template includes a second limiting post symmetrical to the first limiting hole and a second limiting hole corresponding to the first limiting post.

[0008] Furthermore, the lower template includes several first limiting holes, which correspond to the first mounting holes on the lower mold base; the lower template is connected to two rows of symmetrical first limiting posts near the middle station by threads, and the bottom of the first limiting posts is connected to the second mounting holes of the lower mold base by threads.

[0009] Furthermore, the lower mold plate is provided with a punching groove, and the lower mold base is provided with a first blanking hole aligned with the punching groove; the upper mold base is fixed with a first cutter head, and the upper mold plate is provided with a first cutter head limiting port.

[0010] Furthermore, the lower mold plate is provided with a first protrusion at the corresponding position of the first work station, the first protrusion is provided with a first slot in the middle, and the lower mold base is provided with a second blanking hole aligned with the first slot; the upper mold base is fixed with a second cutter head, and the upper mold plate is provided with a second cutter head limiting port.

[0011] Furthermore, the lower template is provided with a second protrusion connecting the first protrusion at the corresponding position of the second work station, and four second slots are symmetrically provided in the middle of the second protrusion; the upper mold base is fixed with a first pressing member, and the upper template is provided with a limiting port for the first pressing member.

[0012] Furthermore, the lower mold plate is provided with a third protrusion connecting the second protrusion at the corresponding position of the third station, and the top of the third protrusion is provided with a third slot and a symmetrically distributed fourth slot; the lower mold base is provided with a third blanking hole and a fourth blanking hole aligned with the third slot and the fourth slot; the upper mold base is fixed with a third cutter head and a fourth cutter head, and the upper mold plate is provided with a third cutter head limiting port and a fourth cutter head limiting port.

[0013] Furthermore, the lower template is provided with a fourth protrusion at the corresponding position of the fourth station, which connects to the third protrusion, and rectangular fifth slots are provided on both sides of the fourth protrusion; the upper mold base is fixed with a second pressing component, and the upper template is provided with a limiting port for the second pressing component.

[0014] Furthermore, the lower mold plate is provided with a discharge port at the corresponding position of the fifth station, and a sixth slot is provided between the discharge port and the fourth protrusion. The discharge port is a ramp. The lower mold base is provided with a fifth dropping hole aligned with the sixth slot. The upper mold base is fixed with a fifth cutting head, and the upper mold plate is provided with a fifth cutting head limiting port.

[0015] Furthermore, the template has through holes at corresponding positions that are identical to the cutter head limiting hole and the pressing part limiting hole corresponding to the upper template.

[0016] In summary, this solution has the following advantages:

[0017] The spring forming mold provided in this solution achieves full automation of the process, including positioning hole processing, spring stamping, crease forming, waste material removal, right-angle bending, and separation blanking, through five-station collaborative operation, which greatly improves production efficiency.

[0018] The spring forming mold provided in this solution, through the cooperation of positioning pins and positioning holes, combined with a servo feeding system, ensures consistent processing accuracy at each station. Attached Figure Description

[0019] Figure 1 This is the main view of the spring forming mold;

[0020] Figure 2 This is a top view of a spring forming mold;

[0021] Figure 3 This is a top view of the lower mold base;

[0022] Figure 4 This is the top view of the lower template;

[0023] Figure 5 This is a top view of the upper mold base;

[0024] Figure 6 This is a top view of the template.

[0025] Figure 7 This is a top view without the template.

[0026] in:

[0027] 001. Material drilling point; 002. First station; 003. Second station; 004. Third station; 005. Fourth station; 006. Fifth station;

[0028] 100. Fixing part; 110. Lower mold base; 111. First mounting hole; 112. Second mounting hole; 113. First blanking hole; 114. Second blanking hole; 115. Third blanking hole; 116. Fourth blanking hole; 117. Fifth blanking hole; 120. Lower template; 121. First limiting hole; 122. First limiting post; 123. Drilling groove; 124. Positioning hole; 125. First protrusion; 1251. First slot; 126. Second protrusion; 1261. Second slot; 127. Third protrusion; 1271. Third slot; 1272. Fourth slot; 128. Fourth protrusion; 1281. Fifth slot; 129. Discharge port; 1291. Sixth slot;

[0029] 200. Displacement section; 210. Upper mold base; 211. Elastic element; 212. First cutter head; 213. Second cutter head; 214. First pressing element; 215. Third cutter head; 216. Fourth cutter head; 217. Second pressing element; 218. Fifth cutter head; 220. Upper template; 221. Elastic element limiting port; 222. First cutter head limiting port; 223. Second cutter head limiting port; 224. First pressing element limiting port; 225. Third cutter head limiting port; 226. 227. Fourth cutter head limiting port; 228. Second pressing element limiting port; 230. Fifth cutter head limiting port; 231. Demolding template; 232. Second limiting post; 233. Second limiting hole; 234. Positioning post; 235. First cutter head limiting port; 236. First pressing element limiting port; 237. Third cutter head limiting port; 238. Fourth cutter head limiting port; 239. Second pressing element limiting port; 240. Fifth cutter head limiting port. Detailed Implementation

[0030] The present solution will be further described below with reference to the accompanying drawings and embodiments:

[0031] Example 1:

[0032] A spring forming mold, fixed on a processing device, as shown in the figure, includes a fixing part 100 and a displacement part 200. The fixing part 100 is fixed on the processing device, and the displacement part 200 moves up and down and repeatedly closes with the fixing part 100 under the drive of the displacement device of the processing device.

[0033] The fixing part 100 has a lower mold plate 120 stacked on top of the lower mold base 110. The lower mold base 110 is used to limit and discharge the waste material after stamping, and the lower mold plate 120 is used to limit the material.

[0034] The lower template 120 includes a plurality of first limiting holes 121, the first limiting holes 121 corresponding to the first mounting holes 111 on the lower mold base 110, the first mounting holes 111 being used to limit the fixing part 100 to be mounted on the processing equipment; the lower template 120 near the middle station is connected by two rows of symmetrical first limiting posts 122 by threads, the bottom of the first limiting posts 122 being threaded to the second mounting holes 112 of the lower mold base 110.

[0035] The displacement part 200 includes multiple layers of upper templates 220 and a release template 230 stacked sequentially on the top of the upper mold base 210. The upper mold base 210 is used to limit and fix the elastic element 211 and the cutting head. The upper template 220 includes a cutting head limiting port and an elastic element limiting port 221. After the release template 230 is closed with the fixing part 100, it fits against the lower template 120. At the same time, the release template 230 limits the top of the elastic element 211. When it fits against the lower template 120, it squeezes the elastic element 211 and the punching port exposes the cutting head.

[0036] The template 230 includes a second limiting post 231 symmetrical to the first limiting hole 121 and a second limiting hole 232 corresponding to the first limiting post 122. The first limiting hole 121 and the second limiting post 231 are used to position the fixed part 100 and the displacement part 200, ensuring that the work of each station can proceed smoothly when they are closed. The distance between the first limiting post 122 and the second limiting hole 232 is sufficient for the material to pass through in the floating support state. The first limiting post 122 and the second limiting hole 232 are used to ensure that the material moves at the station position and avoids positional deviation caused by stamping.

[0037] This solution uses a mold-forming spring method, including the following steps:

[0038] S1, stamped positioning hole

[0039] Five workstations are formed between the fixing part 100 and the displacement part 200, which respectively perform spring stamping, short-side crease forming, long-side waste removal, right-angle bending forming, and separation blanking on the material. The fixing part 100 and the displacement part 200, located between the five workstations, include positioning holes 124 and positioning posts 233. When the material enters the mold through the servo feeding system, the material is first punched. The lower template 120 is provided with punching grooves 123. When the displacement part 200 is pressed down and closed with the fixing part 100, the first cutter head 212 in the displacement part 200 protrudes and punches two symmetrical limiting holes on the material. The first blanking hole 113 of the lower mold base 110 is provided with and aligned with the punching grooves 123.

[0040] The bottom of the first cutter head 212 is fixed on the upper mold base 210. When the moving part 200 and the fixed part 100 are open, the elastic member 211 is in the initial position, and the first cutter head limiting port 222 of the upper mold plate 220 is limited around the first cutter head 212. When the moving part 200 and the fixed part 100 are closed, the elastic member 211 is squeezed, and the first cutter head 212 is exposed from the first cutter head limiting port 222 and a limiting hole is punched in the material.

[0041] The fixing part 100 is symmetrically and evenly provided with two rows of positioning holes 124 in the middle. The template 230 is provided with a positioning post 233 corresponding to the positioning holes 124 in the middle. When the fixing part 100 and the displacement part 200 are open, the material is suspended in the middle of the mold and moves to the discharge port 129 through the servo feeding system. Every time the displacement part 200 opens and closes, the limiting hole will move forward and be limited on the lower positioning post 233 to reach the next station. Through the cooperation of the positioning pin and the positioning hole 124, combined with the servo feeding system, the consistency of processing accuracy of each station is ensured.

[0042] S2, spring sheet stamping

[0043] At the corresponding position of the first workstation, the lower template 120 is provided with a first protrusion 125, and a first slot 1251 corresponding to the shape of the spring clip cut is opened in the middle, which is L-shaped or has a preset spring clip cut outline. The displacement part 200 is provided with a second cutter head 213. When pressed down, the second cutter head 213 punches the initial cut of the spring clip on both sides of the material, and the cut shape is completely matched with the first slot 1251.

[0044] The second blanking hole 114 of the lower mold base 110 is provided and aligned with the first slot 1251.

[0045] The bottom of the second cutter head 213 is fixed on the upper mold base 210. When the moving part 200 and the fixed part 100 are open, the elastic member 211 is in the initial position, and the second cutter head limiting port 223 of the upper mold plate 220 limits the second cutter head 213 around it. When the moving part 200 and the fixed part 100 are closed, the elastic member 211 is squeezed, and the second cutter head 213 is exposed from the second cutter head limiting port 223 and punches out the spring sheet cut on the material.

[0046] S3, Short side crease forming

[0047] At the corresponding position of the second work station, the lower template 120 is provided with a second protrusion 126 connecting the first protrusion 125, and four second slots 1261 are symmetrically arranged in the middle. The displacement part 200 is provided with a first pressing member 214 corresponding to the second slot 1261. When the first pressing member 214 is pressed down, it is embedded into the second slot 1261, forming a pre-fold at the root of the spring piece.

[0048] The bottom of the first pressing member 214 is fixed on the upper mold base 210. When the moving part 200 and the fixed part 100 are open, the elastic member 211 is in the initial position. The first pressing member limiting port 224 of the upper mold plate 220 limits the first pressing member 214 around. When the moving part 200 and the fixed part 100 are closed, the elastic member 211 is squeezed, the first pressing member 214 is exposed from the first pressing member limiting port 224 and presses the spring piece into the second slot 1261, forming a crease at the root of the spring piece.

[0049] S4, Long side waste removal

[0050] At the corresponding position of the third workstation, the lower template 120 is provided with a third protrusion 127 connecting the second protrusion 126, and a third slot 1271 and symmetrically distributed fourth slots 1272 are opened on the top. The dimensions of the third slot 1271 and the fourth slot 1272 match the long side waste. The displacement part 200 is provided with a third cutter head 215 and a fourth cutter head 216. The third cutter head 215 and the fourth cutter head 216 simultaneously cut off the long side waste on both sides of the spring body, and the remaining main body part is still connected to the raw material.

[0051] The third discharge hole 115 and the fourth discharge hole 116 of the lower mold base 110 are provided and aligned with the third slot 1271 and the fourth slot 1272.

[0052] The bottom of the third cutter head 215 and the fourth cutter head 216 are fixed on the upper mold base 210. When the moving part 200 and the fixed part 100 are open, the elastic member 211 is in the initial position. The third cutter head limiting port 225 and the fourth cutter head limiting port 226 of the upper mold plate 220 are respectively limited around the third cutter head 215 and the fourth cutter head 216. When the moving part 200 and the fixed part 100 are closed, the elastic member 211 is squeezed, and the third cutter head 215 and the fourth cutter head 216 are exposed from the third cutter head limiting port 225 and the fourth cutter head limiting port 226 respectively and cut off the waste material on both sides of the long side of the spring body.

[0053] S5, Right-angle bend forming

[0054] At the corresponding position of the fourth work station, the lower template 120 is provided with a fourth protrusion 128 connecting the third protrusion 127, and rectangular fifth slots 1281 are formed on both sides of the fourth protrusion 128. When the displacement part 200 is pressed down, the second pressing member 217 presses the spring piece into the fifth slot 1281 along the side of the fourth protrusion 128, forming a precise 90° bend.

[0055] The bottom of the second pressing member 217 is fixed on the upper mold base 210. When the moving part 200 and the fixed part 100 are open, the elastic member 211 is in the initial position. The second pressing member limiting port 227 of the upper mold plate 220 limits the second pressing member 217 around it. When the moving part 200 and the fixed part 100 are closed, the elastic member 211 is squeezed, and the second pressing member 217 is exposed from the second pressing member limiting port 227 and presses the spring piece into the fifth slot 1281 along the side of the fourth protrusion 128, forming a precise 90° bend.

[0056] S6, Separation and Discharge

[0057] At the corresponding position of the fifth workstation, the lower template 120 is provided with a discharge port 129. A sixth slot 1291 is provided between the discharge port 129 and the fourth protrusion 128. The discharge port 129 is a ramp. When the displacement part 200 presses down, the fifth cutter head 218 cuts the connection between the spring and the raw material, and the finished spring flows into the storage structure through the discharge port 129.

[0058] The fifth discharge hole 117 of the lower mold base 110 is provided and aligned with the sixth slot 1291. The first discharge hole 113, the second discharge hole 114, the third discharge hole 115, the fourth discharge hole 116 and the fifth discharge hole 117 are all used to discharge the falling waste material.

[0059] The bottom of the fifth cutter head 218 is fixed on the upper mold base 210. When the moving part 200 and the fixed part 100 are open, the elastic element 211 is in the initial position, and the fifth cutter head limiting port 228 of the upper mold plate 220 limits the fifth cutter head 218 around it. When the moving part 200 and the fixed part 100 are closed, the elastic element 211 is squeezed, the fifth cutter head 218 is exposed from the fifth cutter head limiting port 228 and cuts off the connection between the spring and the raw material. The finished spring flows into the storage structure through the discharge port 129.

[0060] In the structural configuration of this solution, the stripping template 230 has through holes at corresponding positions that are the same as the cutter head limiting hole and the pressing component limiting hole corresponding to the upper template 220, namely the first cutter head limiting port '234', the second cutter head limiting port '235', the first pressing component limiting port '236', the third cutter head limiting port '237', the fourth cutter head limiting port '238', the second pressing component limiting port '239', and the fifth cutter head limiting port '240'.

[0061] In summary, the spring forming mold provided in this application achieves full automation of the entire process, including positioning hole processing, spring stamping, crease forming, waste material removal, right-angle bending, and separation blanking, through five-station collaborative operation, which greatly improves production efficiency.

[0062] The spring forming mold provided in this application ensures consistent processing accuracy at each station through the cooperation of positioning pins and positioning holes, combined with a servo feeding system.

[0063] The above embodiments are only for illustrating the technical concept and features of this solution, and are intended to enable those skilled in the art to understand the content of this solution and implement it accordingly. They should not be used to limit the scope of protection of this solution. All equivalent transformations or modifications made in accordance with the spirit and essence of this solution should be included within the scope of protection of this solution.

[0064] In the description of this solution, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly. For example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; and they can be internal connections between two components.

[0065] Those skilled in the art can understand the specific meaning of the above terms in this solution based on the specific circumstances.

[0066] It should be understood that the above-described embodiments are merely exemplary and not restrictive. Any obvious or equivalent modifications or substitutions made by those skilled in the art regarding the above details without departing from the basic principles of this solution will be included within the scope of protection of this solution.

Claims

1. A spring forming die, fixed to a machining device, characterized by: It includes a fixing part (100) and a displacement part (200); the fixing part (100) is fixed on the processing equipment, and the displacement part (200) is driven by the displacement device of the processing equipment to move up and down and repeatedly close with the fixing part (100); The fixing part (100) and the displacement part (200) are respectively provided with positioning holes (124) and positioning posts (233) between the five work stations; The fixing part (100) includes a lower mold base (110) and a lower template (120) stacked on top of the lower mold base (110); The displacement part (200) includes an upper mold base (210) and multiple upper templates (220) and a release template (230) stacked on top of the upper mold base (210).

2. The spring forming die of claim 1, wherein: The upper template (220) includes a cutter head limiting port and an elastic element limiting port (221); the stripping template (230) includes a second limiting post (231) symmetrical to the first limiting hole (121) and a second limiting hole (232) corresponding to the first limiting post (122).

3. The spring forming die of claim 1, wherein: The lower template (120) includes several first limiting holes (121), which correspond to the first mounting holes (111) on the lower mold base (110). The lower template (120) is connected to two rows of symmetrical first limiting posts (122) near the middle station by threads. The bottom of the first limiting posts (122) is threaded to the second mounting holes (112) of the lower mold base (110).

4. The spring forming die of claim 3, wherein: The lower template (120) is provided with a punching groove (123), and the lower mold base (110) is provided with a first blanking hole (113) aligned with the punching groove (123); The upper mold base (210) is fixed with a first cutter head (212), and the upper template (220) is provided with a first cutter head limiting port (222).

5. The spring forming die of claim 4, wherein: The lower template (120) is provided with a first protrusion (125) at the corresponding position of the first work station, and a first slot (1251) is provided in the middle of the first protrusion (125). The lower mold base (110) is provided with a second blanking hole (114) aligned with the first slot (1251). The upper mold base (210) is fixed with a second cutter head (213), and the upper template (220) is provided with a second cutter head limiting port (223).

6. The spring forming die of claim 5, wherein: The lower template (120) is provided with a second protrusion (126) connecting the first protrusion (125) at the corresponding position of the second work station. The second protrusion (126) is provided with four second slots (1261) symmetrically arranged in the middle. The upper mold base (210) is fixed with a first pressing member (214), and the upper template (220) is provided with a first pressing member limiting port (224).

7. The spring forming die of claim 6, wherein: The lower template (120) is provided with a third protrusion (127) connecting the second protrusion (126) at the corresponding position of the third station. The top of the third protrusion (127) is provided with a third slot (1271) and a symmetrically distributed fourth slot (1272). The lower mold base (110) is provided with a third blanking hole (115) and a fourth blanking hole (116) aligned with the third slot (1271) and the fourth slot (1272). The upper mold base (210) is fixed with a third cutter head (215) and a fourth cutter head (216), and the upper template (220) is provided with a third cutter head limiting port (225) and a fourth cutter head limiting port (226).

8. The spring forming die of claim 7, wherein: The lower template (120) is provided with a fourth protrusion (128) at the corresponding position of the fourth work station, which connects to the third protrusion (127). The fourth protrusion (128) is provided with a rectangular fifth slot (1281) on both sides. The upper mold base (210) is fixed with a second pressing member (217), and the upper template (220) is provided with a second pressing member limiting port (227).

9. The spring forming die of claim 8, wherein: The lower template (120) is provided with a discharge port (129) at the corresponding position of the fifth station. A sixth slot (1291) is provided between the discharge port (129) and the fourth protrusion (128). The discharge port (129) is a ramp. The lower mold base (110) is provided with a fifth dropping hole (117) aligned with the sixth slot (1291). The upper mold base (210) is fixed with a fifth cutter head (218), and the upper template (220) is provided with a fifth cutter head limiting port (228).

10. The spring forming die of claim 2, wherein: The template (230) has through holes at corresponding positions that are the same as the cutter head limiting hole and the pressing part limiting hole corresponding to the upper template (220).

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