Flat spring mold

Abstract

The utility model discloses a flat plate spring mould, including bottom plate, fixing frame and punch -press mechanism, bottom plate's bottom is fixedly connected with the bottom of fixed frame inner wall, the punch -press mechanism includes hydraulic cylinder, hydraulic cylinder fixed mounting is at the top of fixed frame, the piston end of hydraulic cylinder is fixedly connected with the mounting panel, the bottom fixed mounting of mounting panel has the upper die, the top of bottom plate is provided with lower mould. The utility model discloses through setting the locating block, the installation slot, the first spring, the triangular plate and the locating slot, when moving down from the top of triangular plate to lower mould, can make the triangular plate move to the inside of installation slot and carry out extrusion to the first spring when lower mould contacts with triangular plate and continues to move down, when installation slot is connected with the locating slot, the first spring restores and pushes the triangular plate to enter the inside of locating slot, can play the positioning effect to lower mould.

Description

Technical Field

[0001] This utility model relates to the field of spring mold technology, specifically a flat spring mold. Background Technology

[0002] Springs are important energy storage mechanical components, possessing multiple functions such as controlling the movement of machine parts, mitigating impact vibrations, storing energy, and measuring force values. In the field of precision elastic element manufacturing, flat springs are widely used as key basic components in electronic equipment, automotive parts, medical devices, and aerospace equipment. When it is necessary to process flat springs into arc shapes, molds are used to carry out stamping operations. Through precise force application, the spring is shaped according to the preset arc, thereby meeting the specific requirements for spring shape and performance in different scenarios and ensuring the stable operation and functional realization of related equipment.

[0003] For example, patent announcement number CN 218873391 U discloses a spring bending die. The key technical points are: by placing the lower die on the base plate, starting the motor, and driving the reverse screw to rotate, the reverse screw drives two spiral tubes to move inward, causing the sliding rod and clamping plate to move. The clamping plate holds the side plate, and screws connect and fix the side plate and clamping plate, facilitating the installation and disassembly of the lower die. By pulling the pull rod, the movable rod and clamping plate move, inserting the connecting plate into the bottom of the mounting plate. Releasing the pull rod causes the clamping plate to spring back, resetting and inserting into the connecting plate, fixing the position of the connecting plate, thus completing the installation and fixing of the upper die. The hydraulic cylinder's idle hydraulic rod moves downward, thereby moving the upper die downward, allowing the upper die to fit against the lower die. A limiting block is inserted into the limiting groove for limiting, facilitating template docking and improving the working efficiency of the hydraulic die.

[0004] Based on the search of patent numbers and the shortcomings of existing technologies, the following was found:

[0005] Although this type of spring bending die facilitates the installation and disassembly of the upper and lower dies, during use, the positioning of the lower die relies on the bidirectional lead screw driving the clamping plate to move to the top of the side plates. Subsequently, it needs to be precisely fixed by bolts passing through the corresponding screw holes on the top of the side plates and the clamping plate. This process requires high operational precision. Improper adjustment can easily lead to two problems: either the lower die is deformed due to excessive pressure on the clamping plate, or the screw holes on the clamping plate and the side plates are difficult to align due to deviation in the thread hole position. Therefore, it can easily affect the reliability of the equipment and the processing accuracy. Utility Model Content

[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide a flat spring mold that facilitates the positioning and disassembly of the lower mold. This solves the problem that the lower mold positioning relies on a bidirectional lead screw driving the clamping plate to move to the top of the side plates, followed by precise fixing via bolts through corresponding screw holes on the side plates and clamping plate. This process requires high operational precision, and improper adjustment can easily lead to two problems: excessive clamping pressure causing deformation of the lower mold, or misalignment of the screw holes between the clamping plate and side plates, thus affecting the reliability and processing accuracy of the equipment.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a flat spring mold, comprising a base plate, a fixing frame, and a stamping mechanism, wherein the bottom of the base plate is fixedly connected to the bottom of the inner wall of the fixing frame, the stamping mechanism comprises a hydraulic cylinder, the hydraulic cylinder is fixedly installed on the top of the fixing frame, an mounting plate is fixedly connected to the piston end of the hydraulic cylinder, an upper mold is fixedly installed on the bottom of the mounting plate, and a lower mold is provided on the top of the base plate;

[0008] Positioning blocks are provided on both sides of the top of the base plate. The inner side of the positioning block is in close contact with the two sides of the lower mold. An installation groove is provided on the inner side of the positioning block. A first spring is fixedly connected to the outer side of the inner wall of the installation groove. A triangular plate is fixedly connected to the other end of the first spring. Positioning grooves are provided on both sides of the lower mold. The triangular plate is inserted into the inside of the positioning groove.

[0009] As a preferred embodiment of this utility model, an L-shaped plate is fixedly connected to the bottom of the triangular plate, and the other end of the L-shaped plate passes through the positioning block and extends to the bottom of the lower mold. A through groove is provided inside the positioning block, and the surface of the L-shaped plate is slidably connected to the inner wall of the through groove. The through groove is connected to the mounting groove, and extrusion plates are slidably connected to both sides of the top of the base plate via slide rails.

[0010] In a preferred embodiment of this invention, a support frame is fixedly connected to the top of the base plate, the top of the support frame is in contact with the bottom of the lower mold, and a shaft is rotatably connected to the top of the inner wall of the support frame via a bearing, with arc plates symmetrically installed on the surface of the shaft.

[0011] As a preferred embodiment of this utility model, a fixing plate is fixedly connected to both sides of the top of the base plate, and four second springs are fixedly connected to the inner side of the fixing plate, with the other end of the second springs fixedly connected to the outer side of the positioning block.

[0012] In a preferred embodiment of this invention, a sliding rod is fixedly connected to the outer side of both the triangular plate and the lower mold, and the other end of the sliding rod passes through the positioning block and the fixing plate respectively and is fixedly connected to a limit ring.

[0013] As a preferred embodiment of this utility model, the bottom of the positioning block is fixedly connected to two sliding plates, and the top of the base plate is provided with four sliding grooves, with the surface of the sliding plates slidably connected to the inner wall of the sliding grooves.

[0014] As a preferred embodiment of this invention, a guide plate is fixedly connected to the top of the positioning block, and the inner side of the guide plate is perpendicularly aligned with the inner side of the positioning block.

[0015] As a preferred embodiment of this utility model, a servo motor is fixedly installed inside the base plate, and the output end of the servo motor is fixedly connected to the end of the shaft away from the lower mold.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model, by setting a positioning block, a mounting groove, a first spring, a triangular plate and a positioning groove, allows the lower mold to move downward from the top of the triangular plate, making the lower mold contact the triangular plate and continue to move downward, so that the triangular plate can move into the mounting groove and squeeze the first spring. When the mounting groove and the positioning groove are connected, the first spring returns to its original state and pushes the triangular plate into the interior of the positioning groove, thus achieving the positioning effect of the lower mold.

[0018] 2. This utility model, by setting an L-shaped plate, a through groove and an extrusion plate, allows the L-shaped plate to move outward inside the through groove by sliding the extrusion plate outward. This causes the L-shaped plate to move the triangular plate into the mounting groove, at which point the user can disassemble the lower mold.

[0019] 3. By setting up a support frame, a shaft, and an arc plate, the support frame can stably support the lower mold. By rotating the shaft, the two arc plates can be driven to rotate. When the arc plates contact the extrusion plate and continue to rotate, they can push the L-shaped plate, thereby improving the convenience of disassembling the lower mold. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a three-dimensional exploded view of the lower mold and positioning block of this utility model;

[0022] Figure 3 This is a three-dimensional sectional view of the support frame of this utility model;

[0023] Figure 4 This is a three-dimensional cross-sectional view of the positioning block of this utility model.

[0024] In the diagram: 1. Base plate; 2. Fixing frame; 3. Stamping mechanism; 31. Hydraulic cylinder; 32. Mounting plate; 33. Upper die; 34. Lower die; 4. Positioning block; 5. Mounting groove; 6. First spring; 7. Triangular plate; 8. Positioning groove; 9. L-shaped plate; 10. Through groove; 11. Extrusion plate; 12. Support frame; 13. Shaft; 14. Arc plate; 15. Fixing plate; 16. Second spring; 17. Slide rod; 18. Limiting ring; 19. Slide plate; 20. Slide groove; 21. Guide plate; 22. Servo motor. Detailed Implementation

[0025] 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.

[0026] like Figures 1 to 4 As shown, the present invention provides a flat spring mold, including a base plate 1, a fixing frame 2 and a stamping mechanism 3. The bottom of the base plate 1 is fixedly connected to the bottom of the inner wall of the fixing frame 2. The stamping mechanism 3 includes a hydraulic cylinder 31, which is fixedly installed on the top of the fixing frame 2. The piston end of the hydraulic cylinder 31 is fixedly connected to a mounting plate 32. An upper mold 33 is fixedly installed on the bottom of the mounting plate 32. A lower mold 34 is provided on the top of the base plate 1.

[0027] Positioning blocks 4 are provided on both sides of the top of the base plate 1. The inner side of the positioning block 4 is closely fitted with the two sides of the lower mold 34. The inner side of the positioning block 4 is provided with an installation groove 5. The outer side of the inner wall of the installation groove 5 is fixedly connected to a first spring 6. The other end of the first spring 6 is fixedly connected to a triangular plate 7. Positioning grooves 8 are provided on both sides of the lower mold 34. The triangular plate 7 is inserted into the inside of the positioning groove 8.

[0028] A guide plate 21 is fixedly connected to the top of the positioning block 4, and the inner side of the guide plate 21 is vertically aligned with the inner side of the positioning block 4.

[0029] The bottom of the positioning block 4 is fixedly connected to two sliding plates 19, and the top of the base plate 1 is provided with four sliding grooves 20. The surface of the sliding plate 19 is slidably connected to the inner wall of the sliding groove 20.

[0030] Fixing plates 15 are fixedly connected to both sides of the top of the base plate 1. Four second springs 16 are fixedly connected to the inner side of the fixing plates 15. The other end of the second springs 16 is fixedly connected to the outer side of the positioning block 4.

[0031] When the lower mold 34 is large, it can squeeze the guide plate 21 when it moves into the inner side of the positioning block 4, causing the guide plate 21 to drive the positioning block 4 to move outward, so that the positioning block 4 squeezes the second spring 16. At this time, the sliding plate 19 and the slide groove 20 can improve the stability of the movement of the positioning block 4, thus facilitating the positioning of lower molds 34 of different sizes and specifications.

[0032] In addition, a support frame 12 is fixedly connected to the top of the base plate 1. The top of the support frame 12 fits against the bottom of the lower mold 34. The top of the inner wall of the support frame 12 is rotatably connected to a shaft 13 through a bearing. Arc plates 14 are symmetrically installed on the surface of the shaft 13.

[0033] A servo motor 22 is fixedly installed inside the base plate 1, and the output end of the servo motor 22 is fixedly connected to the end of the shaft 13 away from the lower mold 34.

[0034] An L-shaped plate 9 is fixedly connected to the bottom of the triangular plate 7. The other end of the L-shaped plate 9 passes through the positioning block 4 and extends to the bottom of the lower mold 34. A through groove 10 is opened inside the positioning block 4. The surface of the L-shaped plate 9 is slidably connected to the inner wall of the through groove 10. The through groove 10 is connected to the mounting groove 5. Both sides of the top of the base plate 1 are slidably connected to the extrusion plate 11 through the slide rail.

[0035] Starting the servo motor 22 enables the output end of the servo motor 22 to drive the shaft 13 and the arc plate 14 to rotate, causing the arc plate 14 to push the extrusion plate 11 outward, which in turn causes the extrusion plate 11 to push the L-shaped plate 9 and the triangular plate 7, causing the triangular plate 7 to disengage from the positioning groove 8 and release the positioning effect on the lower mold 34.

[0036] Furthermore, both the triangular plate 7 and the lower mold 34 are fixedly connected to the outer side of a sliding rod 17. The other end of the sliding rod 17 passes through the positioning block 4 and the fixing plate 15 respectively and is fixedly connected to a limit ring 18. When the triangular plate 7 moves into the mounting groove 5 or the positioning block 4 moves outward, the sliding rod 17 can improve the stability of the movement of the triangular plate 7 and the positioning block 4, and can prevent the first spring 6 and the second spring 16 from twisting. The limit ring 18 can prevent the sliding rod 17 from separating from the positioning block 4 or the fixing plate 15.

[0037] The working principle and usage process of this utility model are as follows: When in use, by starting the hydraulic cylinder 31, the piston end of the hydraulic cylinder 31 can drive the mounting plate 32 and the upper mold 33 to move downward. When the upper mold 33 is connected with the lower mold 34, the flat spring inside the lower mold 34 can be stamped. When the lower mold 34 needs to be disassembled, the servo motor 22 is started first, so that the output end of the servo motor 22 drives the shaft 13 and the arc plate 14 to rotate. When the arc plate 14 contacts the extrusion plate 11 and continues to rotate, it can push the L-shaped plate 9 to move outward inside the through groove 10. At the same time, the movement of the L-shaped plate 9 can drive the triangular plate 7 to move completely into the interior of the mounting groove 5. At this time, the triangular plate 7 moves out of the positioning groove 8 and releases the positioning effect on the lower mold 34. The user can take the lower mold 34 out from the top of the support frame 12. At this time, the second spring 16 pushes the positioning block 4 to move inward.

[0038] When installing the lower mold 34, it can be moved to the inside of the guide plate 21 and lowered. When the bottom of the lower mold 34 contacts the inside of the guide plate 21 and continues to move, it can squeeze the guide plate 21 and the positioning block 4 outward, so that the positioning block 4 squeezes the second spring 16. At this time, the lower mold 34 can move along the inner inclined surface of the guide plate 21 to the inside of the positioning block 4. When the lower mold 34 contacts the triangular plate 7 and continues to move downward, it can move the triangular plate 7 into the mounting groove 5 and squeeze the first spring 6. When the mounting groove 5 is connected to the positioning groove 8, the first spring 6 returns to its original position and pushes the triangular plate 7 into the interior of the positioning groove 8. At this time, the positioning block 4 and the triangular plate 7 can be used to position the lower mold 34.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flat spring die comprising a base plate (1), a fixed frame (2) and a stamping mechanism (3), characterized in that: The bottom of the base plate (1) is fixedly connected to the bottom of the inner wall of the fixed frame (2). The stamping mechanism (3) includes a hydraulic cylinder (31). The hydraulic cylinder (31) is fixedly installed on the top of the fixed frame (2). The piston end of the hydraulic cylinder (31) is fixedly connected to an mounting plate (32). An upper mold (33) is fixedly installed on the bottom of the mounting plate (32). A lower mold (34) is provided on the top of the base plate (1). Positioning blocks (4) are provided on both sides of the top of the base plate (1). The inner side of the positioning block (4) is closely fitted with both sides of the lower mold (34). An installation groove (5) is provided on the inner side of the positioning block (4). A first spring (6) is fixedly connected to the outer side of the inner wall of the installation groove (5). A triangular plate (7) is fixedly connected to the other end of the first spring (6). Positioning grooves (8) are provided on both sides of the lower mold (34). The triangular plate (7) is inserted into the inside of the positioning groove (8).

2. A flat spring die according to claim 1, characterized in that: The bottom of the triangular plate (7) is fixedly connected to an L-shaped plate (9). The other end of the L-shaped plate (9) passes through the positioning block (4) and extends to the bottom of the lower mold (34). The positioning block (4) has a through groove (10) inside. The surface of the L-shaped plate (9) is slidably connected to the inner wall of the through groove (10). The through groove (10) is connected to the mounting groove (5). Both sides of the top of the base plate (1) are slidably connected to extrusion plates (11) via slide rails.

3. A flat spring die according to claim 1, characterized in that: The top of the base plate (1) is fixedly connected to a support frame (12), the top of the support frame (12) is in contact with the bottom of the lower mold (34), and the top of the inner wall of the support frame (12) is rotatably connected to a shaft (13) through a bearing. The surface of the shaft (13) is symmetrically equipped with arc plates (14).

4. A flat spring die according to claim 1, characterized in that: The bottom plate (1) has fixed plates (15) fixedly connected to both sides of the top. The inner side of the fixed plate (15) is fixedly connected to four second springs (16), and the other end of the second springs (16) is fixedly connected to the outer side of the positioning block (4).

5. A flat spring die according to claim 4, characterized in that: The outer sides of the triangular plate (7) and the lower mold (34) are both fixedly connected with sliding rods (17). The other end of the sliding rods (17) passes through the positioning block (4) and the fixing plate (15) respectively and is fixedly connected with a limit ring (18).

6. A flat spring die according to claim 1, characterized in that: The bottom of the positioning block (4) is fixedly connected to two sliding plates (19), and the top of the base plate (1) is provided with four sliding grooves (20). The surface of the sliding plate (19) is slidably connected to the inner wall of the sliding groove (20).

7. A flat spring die according to claim 1, characterized in that: The top of the positioning block (4) is fixedly connected to a guide plate (21), and the inner side of the guide plate (21) is vertically aligned with the inner side of the positioning block (4).

8. A flat spring mold according to claim 3, characterized in that: A servo motor (22) is fixedly installed inside the base plate (1), and the output end of the servo motor (22) is fixedly connected to the end of the shaft (13) away from the lower mold (34).

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