Shaping mechanism, shaping device and shaping system for hot pressing of large-wire-diameter compression spring

Abstract

The utility model provides a shaping mechanism, a shaping device and a shaping system for hot pressing of a large-wire-diameter compression spring, and belongs to the technical field of large-wire-diameter compression spring products.The shaping mechanism for hot pressing of the large-wire-diameter compression spring comprises a core rod; the positioning plate assembly is arranged in the axial direction of the core rod and used for clamping and fixing the two ends of the spring. The positioning plate assembly comprises a fixed part used for being matched with the bottom end of the spring and a movable part used for being matched with the top end of the spring and capable of moving in the axial direction of the core rod relative to the fixed part. The fixing piece is used for fixing the moving part on the core rod after displacement, the shaping mechanism for hot pressing of the large-wire-diameter compression spring further comprises a center sleeve arranged at the top of the core rod, and the moving part can move along the outer wall of the center sleeve; the fixed part and the movable part are matched with the bottom end and the top end of the spring respectively, so that the non-ground spring located between the fixed part and the movable part is in a vertical compression state finally, the perpendicularity requirement is met, and follow-up shaping operation is smooth.

Description

TECHNICAL FIELD

[0001] The utility model relates to big line diameter compression spring production technical field, specifically related to big line diameter compression spring hot pressing with shaping mechanism, shaping device and shaping system. BACKGROUND

[0002] Big line diameter spring is widely used in various industrial fields, such as shock absorption system, clutch, brake and other components of automobile industry, to absorb impact and vibration, such as various mechanical equipment in mechanical manufacturing industry, such as press, plate shearing machine, mine machine, to provide stable pressure and buffer, such as pressure control and buffer device of hydraulic system and pneumatic system of industrial equipment. SUMMARY

[0003] The utility model provides big line diameter compression spring hot pressing with shaping mechanism, shaping device and shaping system, and the fixed part and the moving part in the shaping mechanism cooperate with the bottom end and the top end of the spring respectively, make the ungrounded spring between the two ends be in the vertical compression state finally, to meet the requirement of perpendicularity, make the subsequent shaping operation carry out smoothly.

[0004] To solve the above technical problem, the utility model adopts the following technical scheme:

[0005] Big line diameter compression spring hot pressing with shaping mechanism, comprising:

[0006] Core rod;

[0007] Positioning plate assembly, the positioning plate assembly is arranged along the axial direction of the core rod and is used for clamping and fixing the two end portions of the spring, the positioning plate assembly comprises a fixed part matched with the bottom end of the spring and a moving part matched with the top end of the spring and capable of being displaced along the axial direction of the core rod relative to the fixed part, and

[0008] Fixed part, the fixed part is used for fixing the moving part on the core rod after displacement.

[0009] Preferably, the big line diameter compression spring hot pressing with shaping mechanism further comprises a center sleeve arranged at the top of the core rod, and the moving part can move along the outer wall of the center sleeve.

[0010] Preferably, the fixed part comprises a disc body, a convex column arranged at the top of the disc body and a bottom boss extending in a spiral along the circumferential side of the convex column.

[0011] Preferably, the fixing part is axially provided with a through hole matching the outer diameter of the mandrel.

[0012] Preferably, the bottom of the mandrel is provided with an external thread, and a fixing nut is arranged on the external thread, and the outer wall of the mandrel between the fixing part and the fixing nut is provided with a buffer spring.

[0013] Preferably, the moving part comprises a cylinder, a fixing ring arranged on the inner side of the cylinder, and a top boss extending in a spiral manner along the top of the fixing ring.

[0014] Preferably, the top of the center sleeve is provided with a through limiting hole, and the fixing part is a limiting plate matching the limiting hole.

[0015] Preferably, the limiting plate comprises a horizontal section matched with the limiting hole and a vertical section arranged at the end of the horizontal section.

[0016] The large-diameter compression spring hot-pressing shaping device comprises a rack and a press head arranged on the rack, and a shaping mechanism for large-diameter compression spring hot-pressing is arranged on the positioning tool of the rack.

[0017] The large-diameter compression spring hot-pressing shaping system comprises the large-diameter compression spring hot-pressing shaping device and further comprises:

[0018] A heating device is arranged for heating and keeping warm the fixed spring; and

[0019] A shaping device is arranged and comprises a cooling track arranged at the output end of the heating device and a plurality of fans arranged on the cooling track.

[0020] According to the above technical scheme, the present application has the following beneficial effects:

[0021] 1. In the present application, the fixing part is arranged on the radial outer wall of the mandrel, the bottom end of the spring is clamped and positioned on the top of the fixing part, then the moving part is placed on the upper end of the spring, at this time, the press head is pressed on the moving part and moved to a specified height by external force, after the moving part is moved, the position of the moving part on the mandrel is fixed by the fixing part, and the press head is loosened, so as to complete the fixing work before the spring hot-pressing shaping.

[0022] 2. In this utility model, the bottom boss on the fixed part and the top boss on the movable part are designed to cooperate with the two ends of the spring, that is, the bottom boss and the top boss are both spiral structures with a depth of one spring steel wire diameter, and the depth gradually becomes shallower along the circumferential direction until it is zero. At the same time, the spiral curves of the two are consistent with the spiral curves of the two ends of the spring, so that the spring can finally be in a vertically compressed state.

[0023] 3. In this utility model, the fixing part is sleeved on the outer wall of the mandrel, the fixing nut is threaded to the bottom end of the mandrel, and the outer wall of the mandrel between the fixing part and the fixing nut is provided with a buffer spring. When the moving part is pressed down by an external pressure head to compress the spring, the fixing part can also extend and retract, thereby realizing the flexible movement of the fixing part and the moving part and avoiding damage to the fixing part. Attached Figure Description

[0024] Figure 1 A schematic diagram of the hot pressing and shaping device for large-diameter compression springs provided by this utility model;

[0025] Figure 2 A schematic diagram of the shaping mechanism for hot pressing of large-diameter compression springs provided by this utility model;

[0026] Figure 3 for Figure 2 Exploded view;

[0027] Figure 4 A schematic diagram of the structure of the central sleeve;

[0028] Figure 5 This is a structural schematic diagram of the fixing part;

[0029] Figure 6 This is a schematic diagram of the moving part;

[0030] Figure 7 This is a schematic diagram of the mandrel structure;

[0031] Figure 8 This is a schematic diagram of the heating device.

[0032] In the diagram: 10, mandrel; 110, external thread; 120, fixing nut; 130, buffer spring; 210, fixing part; 211, disc; 212, protruding post; 213, bottom boss; 214, through hole; 220, moving part; 221, cylinder; 222, fixing ring; 223, top boss; 310, limiting plate; 311, horizontal section; 312, vertical section; 40, center sleeve; 410, limiting hole; 50, frame; 510, tooling; 60, pressure head; 70, heating device. Detailed Implementation

[0033] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0034] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions: (Refer to...) Figure 2 A hot-pressing shaping mechanism for large-diameter compression springs includes a mandrel 10, a positioning plate assembly, and a fixing member. The positioning plate assembly is arranged axially along the mandrel 10 and is used to engage and fix the two ends of the spring. Specifically, the positioning plate assembly includes a fixing part 210 and a moving part 220. The fixing part is used to match the bottom end of the spring, and the moving part is used to match the top end of the spring. The moving part can be displaced relative to the fixing part along the axial direction of the mandrel. The fixing member is used to fix the displaced moving part onto the mandrel 10. In use, the fixing part is assembled to the radial outer wall of the mandrel, the bottom end of the spring is engaged and positioned at the top of the fixing part, and then the moving part is placed on the upper end of the spring. At this time, an external pressure head presses down, pressing onto the moving part and moving it to a specified height. After the movement is completed, the fixing member fixes the position of the moving part on the mandrel, and the pressure head is released, thus completing the fixing work before hot-pressing and shaping of the spring. In this invention, the fixed part and the movable part cooperate with the bottom end and the top end of the spring, respectively, so that the non-grinding spring located between the two is ultimately in a vertically compressed state to meet the perpendicularity requirements and ensure that the subsequent shaping operation can proceed smoothly.

[0035] Reference Figure 2 , Figure 3 As a preferred technical solution in this embodiment, the shaping mechanism for hot pressing of large-diameter compression springs further includes a central sleeve 40, which is disposed on the top of the mandrel 10. Correspondingly, when the moving part is displaced along the axial direction of the mandrel, it can also move along the outer wall of the central sleeve 40, thereby ensuring the stability of the moving part's movement.

[0036] Reference Figure 5 In some embodiments, the fixing part 210 includes a disc body 211, a protrusion 212, and a bottom protrusion 213. The protrusion 212 is disposed on the top of the disc body, and the bottom protrusion 213 extends spirally along the periphery of the protrusion, that is, the bottom protrusion has a spiral structure, and its depth is one diameter of spring steel wire, gradually decreasing in depth along the circumferential direction until it reaches zero. Its spiral curve is consistent with the spiral curve of the two end faces of the spring, so that the bottom of the spring can be stably placed on the bottom protrusion and in a vertical state. It should be noted that the disc body 211, the protrusion 212, and the bottom protrusion 213 in this embodiment can be an integrally formed structure, that is, they can be formed in one step by a mold during manufacturing.

[0037] Furthermore, in order to facilitate the mounting of the fixing part onto the mandrel 10, a through hole 214 is provided axially in the fixing part 210. The through hole 214 matches the outer diameter of the mandrel 10. It should be noted that the through hole 214 is provided to pass through the disc body 211 and the protrusion 212. In use, the fixing part can be sleeved on the outer wall of the mandrel.

[0038] Furthermore, refer to Figure 7 The bottom of the mandrel 10 is provided with an external thread 110, and a fixing nut 120 is provided on the external thread. A buffer spring 130 is provided on the outer wall of the mandrel between the fixing part and the fixing nut. In use, the fixing part is first sleeved on the outer wall of the mandrel, and then the buffer spring is sleeved on the outer wall of the mandrel, so that one end of the buffer spring abuts against the bottom of the fixing part. Then the fixing nut is spirally moved to the external thread section, so that the fixing nut abuts against the other end of the buffer spring, thereby realizing the assembly of the fixing part.

[0039] It should be noted that the fixing part in this embodiment is telescopically mounted on the outer wall of the mandrel. In this way, when the moving part is pressed down by an external pressure head to compress the spring, the fixing part can also telescopically move, thereby achieving flexible movement of the fixing part and the moving part and avoiding damage to the fixing part.

[0040] Reference Figure 6 In some embodiments, the moving part 220 includes a cylinder 221, a fixing ring 222, and a top boss 223. The fixing ring 222 is disposed on the inner side wall of the cylinder, and the top boss 223 extends spirally along the top of the fixing ring. It should be noted that in this embodiment, the top boss 223 works in conjunction with the bottom boss 213. The top boss 223 also has a spiral structure, and its depth is one diameter of the spring steel wire. The depth gradually decreases along the circumferential direction until it reaches zero. Its spiral curve is consistent with the spiral curves of the two ends of the spring, so that the top of the spring can be stably placed on the top boss and in a vertical state. In this way, combined with the bottom boss, the spring can finally be in a vertically compressed state.

[0041] In some other embodiments, the top of the central sleeve 40 is provided with a through limiting hole 410, and the fixing member is a limiting plate 310 that matches the limiting hole. Further, the limiting plate 310 includes a horizontal section 311 that cooperates with the limiting hole and a vertical section 312 provided at the end of the horizontal section. In use, when the moving part is moved to below the limiting hole on the outer wall of the central sleeve by the pressure head, the limiting plate can be manipulated to place the horizontal section of the limiting plate into the limiting hole, thereby achieving the limiting and fixing of the moving part. Then the pressure head can be released, and the positioning of the spring is completed.

[0042] Reference Figure 1This embodiment also provides a hot pressing and shaping device for large-diameter compression springs, including a frame 50 and a pressure head 60 disposed on the frame. A positioning fixture 510 is provided on the frame 50, and a shaping mechanism for hot pressing large-diameter compression springs as described above is provided on the positioning fixture 510. In use, the moving part is driven by the pressure head on the frame, and the fixed part is combined with the moving part to compress and shape the spring between the two. After the moving part moves into place, the position of the moving part can be limited by the fixing member.

[0043] In addition, refer to Figure 8 This embodiment also provides a hot pressing and shaping system for large-diameter compression springs, including the hot pressing and shaping device for large-diameter compression springs as described above, as well as a heating device 70 and a shaping device. The heating device is used to heat and heat-preserve the fixed spring. The shaping device includes a cooling track set at the output end of the heating device and several fans set on the cooling track. In use, the aforementioned shaping mechanism is used to fix the spring before hot pressing and shaping. The system temperature and time are set in the heating device. The fixed spring, along with the shaping mechanism, is placed into the heating furnace. The spring is in a compressed state during the heating and heat preservation process. It should be noted that the heating furnace is a through-type crawler furnace. After the spring is heated and heat-preserved, the shaping mechanism and the spring come out of the heating furnace and slide into the cooling track. The multiple fans above the cooling track quickly cool and shape the passing spring. Then, the shaped and cooled shaping mechanism is placed in the position of the positioning fixture. The pressure head presses down to press the moving part. At this time, the fixing part is removed. Finally, the pressure head is lifted, the moving part is removed, and the spring is taken out. Thus, the hot pressing and shaping of the spring is completed.

[0044] The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A shaping mechanism for hot pressing large-diameter compression springs, characterized in that, include: Core rod (10); A positioning plate assembly; the positioning plate assembly is arranged axially along the mandrel (10) for engaging and fixing the two ends of the spring, the positioning plate assembly includes a fixing part (210) for matching the bottom end of the spring and a moving part (220) for matching the top end of the spring and capable of displacement relative to the fixing part along the mandrel axially; and The fixing member is used to fix the movable part after displacement onto the mandrel (10).

2. The shaping mechanism for hot pressing of large-diameter compression springs according to claim 1, characterized in that, The large-diameter compression spring hot pressing shaping mechanism also includes a central sleeve (40) disposed on the top of the mandrel (10), and the movable part is capable of moving along the outer wall of the central sleeve (40).

3. The shaping mechanism for hot pressing of large-diameter compression springs according to claim 1, characterized in that, The fixing part (210) includes a disc body (211), a protrusion (212) provided on the top of the disc body, and a bottom protrusion (213) extending spirally along the periphery of the protrusion.

4. The shaping mechanism for hot pressing of large-diameter compression springs according to claim 3, characterized in that, The fixing part (210) is provided with a through hole (214) in the axial direction that matches the outer diameter of the mandrel (10).

5. The shaping mechanism for hot pressing of large-diameter compression springs according to claim 4, characterized in that, The bottom of the mandrel (10) is provided with an external thread (110), and a fixing nut (120) is provided on the external thread. A buffer spring (130) is provided on the outer wall of the mandrel located between the fixing part and the fixing nut.

6. The shaping mechanism for hot pressing of large-diameter compression springs according to claim 3, characterized in that, The movable part (220) includes a cylindrical body (221), a fixing ring (222) disposed inside the cylindrical body, and a top boss (223) extending spirally along the top of the fixing ring.

7. The shaping mechanism for hot pressing of large-diameter compression springs according to claim 2, characterized in that, The top of the central sleeve (40) is provided with a through limiting hole (410), and the fixing member is a limiting plate (310) that matches the limiting hole.

8. The shaping mechanism for hot pressing of large-diameter compression springs according to claim 7, characterized in that, The limiting plate (310) includes a horizontal section (311) that mates with the limiting hole and a vertical section (312) disposed at the end of the horizontal section.

9. A hot-pressing and shaping device for large-diameter compression springs, comprising a frame (50) and a pressure head (60) disposed on the frame, characterized in that, The positioning fixture (510) of the frame (50) is provided with a shaping mechanism for hot pressing of large-diameter compression springs as described in any one of claims 1-8.

10. A hot-pressing and shaping system for large-diameter compression springs, characterized in that, The large-diameter compression spring hot-pressing shaping device as described in claim 9 further includes: Heating device (70), the heating device being used to heat and keep the spring in place after it has been fixed; and A shaping device, comprising a cooling rail disposed at the output end of a heating device and several fans disposed on the cooling rail.

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