A spring eye shaping tool

Abstract

The utility model discloses a kind of plate spring ear shaping tool, belong to plate spring ear processing technical field, including upper die plate, the top of upper die plate is fixedly provided with mould handle, and upper die plate is connected with oil press upper;Upper die holder, upper die holder is set in the bottom end of upper die plate;Lower die plate, lower die plate is below upper die holder;Lower die holder, lower die holder is set in the top of lower die plate;Two guide mechanisms, two guide mechanisms are set between upper die plate and lower die plate;Tool further includes core-pulling mechanism, core-pulling mechanism is all set on lower die plate, and core-pulling mechanism is detachably connected with lower die plate. Plate spring ear is pressed and shaped by the cooperation between upper forming die and lower forming die, and while pressing, the forming mandrel is ejected from the plate spring ear after shaping by the ejector pin in core-pulling mechanism, to integrate work flow, solve the technical problem that artificial core pulling leads to low production efficiency, realize the technical effect of improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of leaf spring coiling processing, and in particular to a leaf spring coiling shaping fixture. Background Technology

[0002] Leaf spring lugs are a key structure in automotive suspension systems, typically located at both ends of the main leaf spring. In existing technologies, leaf spring lugs are usually manufactured using a manual rolling method. However, due to the instability of manual operation, the shape and dimensional tolerances of the formed lugs often need to be corrected by pressing with a mold. Furthermore, after the leaf spring lugs are shaped, manual core pulling is required, which prolongs production time and reduces production efficiency. Utility Model Content

[0003] The purpose of this utility model is to solve the problem of low production efficiency caused by the use of multiple molds in the existing technology, and to propose a leaf spring coiling ear shaping fixture.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A leaf spring coiling ear shaping fixture includes an upper template, a mold handle is fixedly provided at the top of the upper template, and the mold handle is connected to a hydraulic press;

[0006] An upper mold base is disposed at the bottom end of the upper template. The upper mold base is detachably connected to the upper template. An upper forming mold is also fixedly disposed at the bottom end of the upper mold base.

[0007] The lower template is located below the upper mold base and is adapted to the upper template;

[0008] A lower mold base is disposed at the top of the lower template and is detachably connected to the lower template. A lower forming mold is also fixedly disposed on the lower mold base, and the lower forming mold is adapted to the upper forming mold.

[0009] Two guiding mechanisms are provided, which are disposed between the upper template and the lower template and are symmetrically located on both sides of the upper forming mold and the lower forming mold.

[0010] The tooling also includes a core-pulling mechanism, which is mounted on the lower template and is detachably connected to the lower template.

[0011] Furthermore, the bottom end of the upper forming mold is recessed inward to form an upper inclined surface, and the upper inclined surface is bent to form an upper forming groove;

[0012] The lower forming mold is provided with a lower inclined surface adapted to the upper inclined surface, and the top of the lower forming mold is provided with a lower forming groove.

[0013] When the upper forming mold abuts against the lower forming mold, the upper forming groove and the lower forming groove cooperate to form a forming cavity. The forming cavity is adapted to the shape of the leaf spring lug, and there is a gap between the upper inclined surface and the lower inclined surface.

[0014] Furthermore, the guiding mechanism includes:

[0015] A guide sleeve is disposed on the upper mold plate and located on one side of the upper forming mold;

[0016] The guide post is disposed on the lower template and located on one side of the lower forming mold, and the axis of the guide sleeve and the axis of the guide post are located on the same axis.

[0017] Furthermore, the tooling also includes a forming mandrel, which has a columnar structure.

[0018] Furthermore, the core-pulling mechanism includes:

[0019] A gasket is disposed at the bottom end of the upper template and is detachably connected to the upper template.

[0020] A ejector pin is fixedly disposed at the bottom end of the washer and is used to eject the molding mandrel from the leaf spring lug.

[0021] A core-pulling seat is provided on the lower template and is detachably connected to the lower template. The core-pulling seat is provided with a placement groove, and the bottom of the placement groove is provided with a through hole that matches the ejector pin.

[0022] A positioning block is provided on the lower template and located on one side of the placement slot opening. The positioning block is provided with an auxiliary positioning slot.

[0023] Furthermore, there are two core-pulling mechanisms, and the two core-pulling mechanisms are respectively arranged on both sides of the lower forming mold, and the ejector pins and through holes in the two core-pulling mechanisms are all set with different diameters.

[0024] The beneficial effects of this utility model are as follows:

[0025] This application uses the cooperation between the upper and lower forming molds to press and shape the leaf spring coil ear. At the same time as pressing, the forming mandrel is pushed out from the leaf spring coil ear after the previous shaping is completed by the ejector pin in the core pulling mechanism. This integrates the workflow, solves the technical problem of low production efficiency caused by manual core pulling, and achieves the technical effect of improving production efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a leaf spring coil ear shaping fixture provided in an embodiment of the present utility model;

[0027] Figure 2 This is an exploded view of a leaf spring coil ear shaping fixture provided in an embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram of the ejector pin structure provided in the embodiments of this utility model.

[0029] The markings in the diagram are as follows:

[0030] 1. Upper template; 11. Mold handle;

[0031] 2. Upper mold base; 21. Upper forming mold; 211. Upper inclined surface; 212. Upper forming groove;

[0032] 3. Download the template;

[0033] 4. Lower mold base; 41. Lower forming mold; 411. Lower inclined surface; 412. Lower forming groove;

[0034] 5. Guiding mechanism; 51. Guide sleeve; 52. Guide post;

[0035] 6. Core pulling mechanism; 61. Gasket; 62. Ejector pin; 63. Core pulling base; 631. Placement slot; 632. Through hole; 64. Positioning block; 641. Auxiliary positioning bayonet. Detailed Implementation

[0036] 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.

[0037] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0040] Reference Figures 1 to 3As shown, a leaf spring coil forming fixture is used to solve the technical problem of low production efficiency caused by manual core pulling in the production process of leaf spring coil products. It includes an upper template 1, an upper mold base 2, a lower template 3, a lower mold base 4, and two guide mechanisms 5. Specifically, the upper template is connected to a hydraulic press. A mold handle 11 is fixedly installed at the top of the upper template 1. The mold handle 11 is used for positioning the upper template 1 when it is installed on the hydraulic press. It should be understood that the hydraulic press is a stamping device that uses a hydraulic cylinder to generate compressive force. It includes components such as hydraulic connecting rods and crankshafts. The hydraulic system converts the pressure energy of hydraulic oil into mechanical energy, thereby driving the mold handle 11 connected to it to reciprocate up and down. The upper mold base 2 is located at the bottom end of the upper template 1. The upper mold base 2 is detachably connected to the upper template 1 by bolts, allowing workers to quickly replace the upper mold base 2. An upper forming mold 21 is also fixedly installed at the bottom end of the upper mold base 2. The upper forming mold 21 is used to press the leaf spring coil. The lower template 3 is located below the upper mold base 2. The lower template 3 is fixed on the hydraulic press worktable and is adapted to the upper template 1, meaning that the lower template 3 and the upper mold 1 have the same shape and size to improve fitting accuracy, ensure uniform force distribution during stamping operations, and reduce stress concentration. The lower mold base 4 is located at the top of the lower template 3 and is detachably connected to the lower template 3 by bolts, allowing workers to quickly replace the lower mold base 4 and improve work efficiency. A lower forming mold 41 is also fixedly installed on the lower mold base 4. The lower forming mold 41 is adapted to the upper forming mold 21, meaning that the upper forming mold and the lower forming mold 41 cooperate to press and shape the leaf spring coil. Two guide mechanisms 5 are disposed between the upper template 1 and the lower template 3, and are symmetrically located on both sides of the upper forming die 21 and the lower forming die 41. The guide mechanisms 5 are used to guide the relative movement between the upper template 1 and the lower template 3, thereby preventing the upper forming die 21 and the lower forming die 41 from misaligning during the stamping process and improving the processing accuracy.

[0041] In this embodiment, for ease of description, the guiding mechanism 5 is described as a single guiding mechanism 5, which includes a guide sleeve 51 and a guide post 52 adapted to the guide sleeve 51. One end of the guide sleeve 51 is fixedly disposed on the upper mold plate, located on one side of the upper forming mold 21, and one end of the guide post 52 is fixedly disposed on the lower mold plate 3, located on one side of the lower forming mold 41. The axes of the guide sleeve 51 and the guide post 52 are located on the same axis. That is, during the mold closing operation, the upper mold plate 1 moves toward the lower mold plate 3. By inserting the guide post 52 into the guide sleeve 51 and sliding it within the guide sleeve 51, a guiding function is achieved, thereby preventing the upper mold plate 1 from shifting away from the lower mold plate 3 when it moves. This ensures that the upper forming mold 21 and the lower forming mold 41 are aligned, improving the pressing and shaping accuracy of the leaf spring coil.

[0042] More specifically, since the main leaf spring is curved, to ensure that the leaf spring coil retracts evenly during compression, the bottom end of the upper forming mold 21 is recessed inward to form an upwardly inclined surface 211. The upwardly inclined surface 211, near the center of the upper forming mold 21, is curved to form an arc-shaped groove, which is the upper forming groove 212. The lower forming mold 41 has a downwardly inclined surface 411 that matches the upwardly inclined surface 211. The top end of the lower forming mold 41, corresponding to the center of the upper forming groove 212, has a recess, which is the lower forming groove 412, and the lower forming groove 412 matches the upper forming groove 212. When the leaf spring lug is being pressed, the upper forming mold 21 and the lower forming mold 41 abut against each other. At this time, the upper forming groove 212 and the lower forming groove 412 cooperate to form a forming cavity. The forming cavity is adapted to the shape designed for the leaf spring lug to shape the outer contour of the lug. Furthermore, when the upper forming mold 21 and the lower forming mold 41 abut against each other, there is a gap between the upper inclined surface 211 and the lower inclined surface 411 to accommodate the leaf spring main sheet and prevent the leaf spring main sheet from deforming under pressure.

[0043] In this embodiment, in order to fix the inner contour shape of the leaf spring lug, the tooling also includes a forming mandrel (not shown in the figure). The forming mandrel is a columnar structure that is adapted to the inner contour of the leaf spring lug. That is, when pressing the leaf spring lug, the forming mandrel is inserted into the inner contour of the leaf spring lug, and the inner contour shape of the leaf spring lug is shaped by the pressure of the lug forming cavity on the leaf spring lug and the forming mandrel.

[0044] In this embodiment, since the forming mandrel may become stuck inside the leaf spring coil after molding and is difficult to remove, it is usually necessary to use tools to remove the mandrel separately, which prolongs the product production time. To quickly remove the forming mandrel, the tooling also includes a mandrel-pulling mechanism 6. The mandrel-pulling mechanism 6 is set on the lower template 3 and is detachably connected to the lower template 3 by bolts. It is used to remove the forming mandrel from the leaf spring coil. Specifically, the mandrel-pulling mechanism 6 includes a washer 61, a push pin 62, a mandrel-pulling seat 63, and a positioning block 64. The washer 61 is set at the bottom end of the upper template 1 and is detachably connected to the upper template 1 by bolts, which facilitates quick assembly and disassembly by the operator. The push pin 62 is a columnar structure adapted to the forming mandrel. One end of the push pin 62 is fixedly set at the bottom end of the washer 61 by welding. The push pin 62 is used to push the forming mandrel out of the leaf spring coil. The core-pulling seat 63 is disposed on the lower template 3 and is detachably connected to the lower template 3. The core-pulling seat 63 is provided with a placement groove 631 for placing the leaf spring coil lug. The bottom of the placement groove 631 is provided with a through hole 632 adapted to the ejector pin 62. The through hole 632 is adapted to the forming mandrel, that is, the diameter of the through hole 632 is adapted to the diameter of the forming mandrel, so that after the ejector pin 62 fixes the forming mandrel out, the forming mandrel falls out through the through hole 632. The positioning block 64 is disposed on the lower template 3 and is located on one side of the opening of the placement groove 631. One side of the positioning block 64 protrudes towards the upper template 1, so that the top of the positioning block 64 forms a step shape. The step is an auxiliary positioning bayonet 641 used to restrict and position the leaf spring main plate. In this embodiment, after the leaf spring ear is pressed and shaped, it is placed vertically in the placement groove 631 on the core-pulling seat 63, and the leaf spring main plate is positioned by the auxiliary positioning slot 641 on the positioning block 64, thereby fixing the position of the leaf spring. At this time, the upper template 1 is driven to press down vertically by the hydraulic press tool, so that the ejector pin 62 pushes the forming mandrel in the leaf spring ear out from the through hole 632, thus removing the forming mandrel in the leaf spring ear. This allows the forming mandrel in the previous leaf spring ear to be removed while the leaf spring ear is being shaped, improving the utilization efficiency of the equipment and speeding up the production.

[0045] To accommodate leaf spring coils of different specifications, two core-pulling mechanisms 6 are provided, with each mechanism located on one side of the lower forming mold 41. The ejector pins 62 and through holes 632 in the two core-pulling mechanisms 6 are of different diameters to accommodate two different specifications of leaf spring coils and forming mandrels. This also avoids frequent disassembly of the core-pulling mechanisms 6, which would waste labor costs and improve production efficiency.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tooling for shaping leaf spring coils, characterized in that, include: Upper template (1), the upper template (1) is connected to the hydraulic press, and a mold handle (11) is fixedly provided at the top of the upper template (1). The mold handle (11) is used for positioning the upper template (1) during installation. Upper mold base (2), the upper mold base (2) is disposed at the bottom end of the upper template (1), the upper mold base (2) is detachably connected to the upper template (1), and an upper forming mold (21) is also fixedly disposed at the bottom end of the upper mold base (2); The lower template (3) is located below the upper mold base (2) and is adapted to the upper template (1); The lower mold base (4) is located at the top of the lower template (3) and is detachably connected to the lower template (3). A lower forming mold (41) is also fixedly provided on the lower mold base (4) and is adapted to the upper forming mold (21). Two guiding mechanisms (5) are provided between the upper template (1) and the lower template (3), and are symmetrically located on both sides of the upper forming mold (21) and the lower forming mold (41); The tooling also includes a core-pulling mechanism (6), which is mounted on the lower template (3) and is detachably connected to the lower template (3).

2. The leaf spring coiling ear shaping fixture according to claim 1, characterized in that, The bottom end of the upper forming mold (21) is recessed inward to form an upper inclined surface (211), and the upper inclined surface (211) is bent to form an upper forming groove (212); The lower forming mold (41) is provided with a lower inclined surface (411) that is adapted to the upper inclined surface (211), and the top of the lower forming mold (41) is provided with a lower forming groove (412). When the upper forming mold (21) abuts against the lower forming mold (41), the upper forming groove (212) and the lower forming groove (412) cooperate to form a forming cavity. The forming cavity is adapted to the shape of the leaf spring lug, and there is a gap between the upper inclined surface (211) and the lower inclined surface (411).

3. The leaf spring coiling ear shaping fixture according to claim 1, characterized in that, The guiding mechanism (5) includes: Guide sleeve (51), the guide sleeve (51) is disposed on the upper mold plate on one side of the upper forming mold (21); The guide post (52) is disposed on the lower template (3) on one side of the lower forming mold (41), and the axis of the guide sleeve (51) and the axis of the guide post (52) are on the same axis.

4. The leaf spring coiling ear shaping fixture according to claim 1, characterized in that, The tooling also includes a forming mandrel, which is a columnar structure.

5. The leaf spring coiling ear shaping fixture according to claim 1, characterized in that, The core-pulling mechanism (6) includes: A gasket (61) is provided at the bottom end of the upper template (1), and the gasket (61) is detachably connected to the upper template (1); Ejector pin (62), which is fixedly disposed at the bottom end of the gasket (61) and is used to eject the molding mandrel from the leaf spring lug; A core-pulling seat (63) is provided on the lower template (3) and is detachably connected to the lower template (3). A placement groove (631) is provided on the core-pulling seat (63), and a through hole (632) adapted to the ejector pin (62) is provided at the bottom of the placement groove (631). Positioning block (64) is disposed on the lower template (3) and located on one side of the opening of the placement slot (631). The positioning block (64) is provided with an auxiliary positioning slot (641).

6. The leaf spring coiling ear shaping fixture according to claim 1, characterized in that, There are two core-pulling mechanisms (6), and the two core-pulling mechanisms (6) are respectively arranged on both sides of the lower forming mold (41), and the ejector pins (62) and through holes (632) in the two core-pulling mechanisms (6) are all set with different diameters.

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