Positioning tool for machining lifting hook of automobile silencer

Abstract

The utility model discloses a positioning tool for processing a lifting hook of an automobile silencer, which comprises a working table, a driving table, a base plate and a mould block, the bottom of the driving table is fixedly connected with the top of the working table, the bottom of the base plate is fixedly connected with the top of the driving table, and the bottom of the mould block is movably connected with two sides of the top of the base plate. By arranging the pressing plate, when raw materials need to be machined into the lifting hook, the lifting hook raw materials are placed on the base plate, then the pressing plate is driven to press the two ends of the top of the raw materials through the lifting mechanism, then the driving table can be started to drive the mold blocks to symmetrically move inwards, and the raw materials are stably pressed into the lifting hook; the problems that when the two die blocks symmetrically move inwards and the raw material of the lifting hook is bent, the top of the raw material is not positioned, and one side of the raw material tilts, so that the machining shape and size of the lifting hook do not meet the requirements, the product quality is affected, and the rejection rate is increased are solved, and the effect of auxiliary positioning is achieved.

Description

Technical Field

[0001] This utility model relates to the field of hook manufacturing technology, specifically a positioning tooling for processing automotive muffler hooks. Background Technology

[0002] Automotive mufflers are primarily used to reduce the noise generated by a motor vehicle's engine. Their principle is based on the fact that a car's exhaust pipe consists of two pipes of different lengths. These two pipes separate and then converge. Since the length difference between these two pipes is equal to half the wavelength of the sound waves emitted by the car, the two sound waves interfere and cancel each other out when they overlap, thus reducing the sound intensity and decreasing the transmitted sound, thereby achieving a muffler effect. With the development of the modern automotive industry and its requirements, modern cars must be equipped with automotive mufflers. When using automotive mufflers, hooks need to be mounted on the side surface for easy installation. In the current manufacturing process of automotive muffler hooks, a positioning device is needed to position the hook body, facilitating the cold-pressing process of the hook.

[0003] For example, application number CN202321107372.5 discloses a positioning device for hook production, which relates to the field of hook manufacturing technology. The device includes a positioning device body, a drive assembly, and an auxiliary assembly. The drive assembly is located at the top of the positioning device body, and the auxiliary assembly is located at the bottom of the positioning device body. The drive assembly is positioned above the auxiliary assembly. The positioning device body includes a first base plate, a second base plate, a support frame, guide rods, and sliding blocks. The first base plate is located at the top of the positioning device body, and the second base plate is fixedly installed on the top of the first base plate. The support frame is fixedly installed on the top of the second base plate. Two sets of slots are provided on the top of the support frame, and a set of guide rods is fixedly installed in each of the two sets of slots. Two sets of sliding blocks are sleeved on the outer walls of the two sets of guide rods. The gap between the devices can be adjusted according to the size of the prefabricated hook to achieve the purpose of adjusting the device size, improving the flexibility of the device and optimizing the user experience.

[0004] Based on the search of the aforementioned patents and the findings of existing equipment, while the aforementioned equipment can solve the problems of manual selection of the positioning mold size according to the pre-produced hook size when positioning the hook, which is time-consuming and labor-intensive and increases the workload of workers, and the inability of the device to automatically adjust the size of the positioning mold, thus limiting its use, during use, the two mold blocks move symmetrically inward. When bending the hook raw material, the top of the raw material is not positioned, and one side of the raw material may warp up. Therefore, the processed shape and size of the hook may not meet the requirements, affecting product quality and increasing the scrap rate. Summary of the Invention

[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide a positioning fixture for processing automotive muffler hooks. This fixture has the advantage of auxiliary positioning and solves the problem that when the two mold blocks move inward symmetrically and bend the hook raw material, the top of the raw material is not positioned, and one side of the raw material may warp up. This would cause the processed shape and size of the hook to not meet the requirements, affecting product quality and increasing the scrap rate.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a positioning fixture for processing automotive muffler hooks, comprising a worktable, a drive table, a pad, and a mold block. The bottom of the drive table is fixedly connected to the top of the worktable, the bottom of the pad is fixedly connected to the top of the drive table, the bottom of the mold block is movably connected to both sides of the top of the pad, the outer side of the mold block is fixedly connected to the output end of the drive table, pressure plates are provided on both sides of the top of the pad, and a lifting mechanism is fixedly connected to the rear side of the top of the worktable.

[0007] In a preferred embodiment of this utility model, the lifting mechanism includes an L-shaped base frame. The rear side of the bottom of the L-shaped base frame is fixedly connected to the rear side of the top of the worktable. A through groove is provided on the front side of the top of the L-shaped base frame. A toothed plate is slidably connected to the inner wall of the through groove. A gear is meshed with the front side of the toothed plate. A support block is fixedly connected to the left side of the front side of the top of the L-shaped base frame. The left side of the gear is movably connected to the right side of the support block through a pin. A U-shaped frame is fixedly connected to the bottom of the toothed plate. The top of the pressure plate is fixedly connected to both sides of the bottom of the U-shaped frame.

[0008] As a preferred embodiment of this utility model, a spring is fixedly connected to the top of the L-shaped frame, and the other end of the spring is fixedly connected to the front side of the bottom of the L-shaped base frame.

[0009] As a preferred embodiment of this invention, supplementary grooves are provided on both the front and rear sides of the top of the mold block.

[0010] As a preferred embodiment of this utility model, limit rods are fixedly connected to both sides of the toothed plate, and limit grooves are formed on both sides of the inner wall of the through groove. The surface of the limit rod is slidably connected to the inner wall of the limit groove.

[0011] As a preferred embodiment of this invention, an L-shaped assist handle is fixedly connected to the right side of the gear.

[0012] As a preferred embodiment of this utility model, a slot is provided on the rear side of the toothed plate, and an insert block is slidably connected to the inner wall of the slot. The rear side of the bottom of the insert block contacts the top of the L-shaped base frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model, by setting a pressure plate, allows the raw material to be placed on a pad when it needs to be processed into a hook. Then, through a lifting mechanism, the pressure plate is driven to press down on both ends of the top of the raw material. After that, the drive table can be started to drive the mold blocks to move symmetrically inward, stably pressing the raw material into a hook. This solves the problem that when the two mold blocks move symmetrically inward to bend the raw material, the top of the raw material is not positioned, and one side of the raw material may warp up. As a result, the processed shape and size of the hook will not meet the requirements, affecting product quality and increasing the scrap rate. This invention achieves the effect of auxiliary positioning.

[0015] 2. This utility model, by setting up a lifting mechanism, when it is necessary to place the raw material of the hook onto the pad, first rotates the gear in the forward direction, driving the toothed plate that meshes with it to rise along the track of the through groove, so that the U-shaped frame rises, pulling the pressure plate to the top of the mold block, thereby providing enough space for the raw material to be placed on the pad. After the placement is completed, the gear in the reverse direction can be used to drive the toothed plate to return to its original position and descend along the track until the pressure plate presses down on both ends of the top of the raw material of the hook, thereby enabling the user to freely control the lifting and lowering of the pressure plate, limit the position of the raw material of the hook, and stabilize the bending process of the raw material.

[0016] 3. This utility model incorporates a spring. When the user drives the gear to rotate forward, causing the meshing toothed plate to rise along the track of the through groove, the U-shaped frame pulls the pressure plate to the top of the mold block. As the U-shaped frame rises, the spring between the U-shaped frame and the L-shaped base frame is compressed, deforms, and generates a rebound force. When the gear is released, the spring's rebound force automatically pushes the U-shaped frame down, allowing the gear and toothed plate to automatically reset. Ultimately, the pressure plate can quickly and automatically press onto the raw material for subsequent operations, thereby improving the user's ease of operation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is an exploded view of the parts of the workbench of this utility model;

[0019] Figure 3 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0020] In the diagram: 1. Workbench; 2. Drive table; 3. Pad plate; 4. Mold block; 5. Pressure plate; 6. Lifting mechanism; 61. L-shaped base frame; 62. Through slot; 63. Toothed plate; 64. Gear; 65. Support block; 66. U-shaped frame; 7. Spring; 8. Supplementary groove; 9. Limiting rod; 10. Limiting groove; 11. L-shaped power handle; 12. Slot; 13. Insert block. Detailed Implementation

[0021] 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.

[0022] like Figures 1 to 3 As shown, the present invention provides a positioning fixture for processing automotive muffler hooks, including a worktable 1, a drive table 2, a pad 3, and a mold block 4. The bottom of the drive table 2 is fixedly connected to the top of the worktable 1, the bottom of the pad 3 is fixedly connected to the top of the drive table 2, the bottom of the mold block 4 is movably connected to both sides of the top of the pad 3, the outer side of the mold block 4 is fixedly connected to the output end of the drive table 2, pressure plates 5 are provided on both sides of the top of the pad 3, and a lifting mechanism 6 is fixedly connected to the rear side of the top of the worktable 1.

[0023] refer to Figure 1 and Figure 2 The lifting mechanism 6 includes an L-shaped base frame 61. The rear side of the bottom of the L-shaped base frame 61 is fixedly connected to the rear side of the top of the worktable 1. A through groove 62 is provided on the front side of the top of the L-shaped base frame 61. A toothed plate 63 is slidably connected to the inner wall of the through groove 62. A gear 64 is meshed with the front of the toothed plate 63. A support block 65 is fixedly connected to the left side of the front side of the top of the L-shaped base frame 61. The left side of the gear 64 is movably connected to the right side of the support block 65 through a shaft pin. A U-shaped frame 66 is fixedly connected to the bottom of the toothed plate 63. The top of the pressure plate 5 is fixedly connected to both sides of the bottom of the U-shaped frame 66.

[0024] As a technical optimization of this utility model, by setting up a lifting mechanism 6, when it is necessary to place the raw material of the hook onto the pad 3, the forward gear 64 is first rotated to drive the toothed plate 63 that meshes with it to rise along the trajectory of the through groove 62, so that the U-shaped frame 66 rises and pulls the pressure plate 5 to the top of the mold block 4, thereby providing enough space for the raw material to be placed on the pad 3. After the placement is completed, the reverse gear 64 can be used to drive the toothed plate 63 to return to its original position and descend along the trajectory until the pressure plate 5 presses down on both ends of the top of the raw material of the hook, thereby enabling the user to freely control the lifting and lowering of the pressure plate 5, limit the position of the raw material of the hook, and stabilize the bending process of the raw material.

[0025] refer to Figure 1 A spring 7 is fixedly connected to the top of the L-shaped frame 66, and the other end of the spring 7 is fixedly connected to the front side of the bottom of the L-shaped base frame 61.

[0026] As a technical optimization of this utility model, by setting a spring 7, when the user drives the toothed plate 63, which meshes with the forward rotating gear 64, to rise along the trajectory of the through groove 62, causing the U-shaped frame 66 to pull the pressure plate 5 to the top of the mold block 4, as the U-shaped frame 66 rises, the spring 7 between the U-shaped frame 66 and the L-shaped base frame 61 will be compressed and deformed to generate a rebound force. Then, when the limit on the gear 64 is released, the rebound force of the spring 7 will automatically push the U-shaped frame 66 down and allow the gear 64 and the toothed plate 63 to automatically reset. Finally, the pressure plate 5 can quickly and automatically press on the raw material for subsequent operations, thereby improving the user's ease of operation.

[0027] refer to Figure 2 Supplementary grooves 8 are provided on both the front and rear sides of the top of the mold block 4.

[0028] As a technical optimization of this utility model, by setting an additional groove 8, when a small-diameter hook material is placed on the pad 3 and is lower than the height of the mold block 4, and the pressure plate 5 needs to be able to press down on the material, the additional groove 8 allows the pressure plate 5 to be inserted into the mold block 4 during the pressing process, and smoothly press down on the small-diameter hook material that is lower than the mold block 4, thereby improving the practicality of the pressure plate 5.

[0029] refer to Figure 3 Limiting rods 9 are fixedly connected to both sides of the toothed plate 63, and limiting grooves 10 are opened on both sides of the inner wall of the through groove 62. The surface of the limiting rod 9 is slidably connected to the inner wall of the limiting groove 10.

[0030] As a technical optimization of this utility model, by setting a limiting rod 9 and a limiting groove 10, during the process of the toothed plate 63 moving up and down along the trajectory of the through groove 62, the limiting rod 9 moves along the trajectory of the limiting groove 10 together with the toothed plate 63. Subsequently, through the cooperation of the limiting rod 9 and the limiting groove 10, a stable trajectory is provided for the raising and lowering of the toothed plate 63, so that the stability when the pressure plate 5 is inserted into the supplementary groove 8 by the rebound force of the spring 7 is improved, thereby improving the user's work efficiency.

[0031] refer to Figure 1 An L-shaped assist handle 11 is fixedly connected to the right side of gear 64.

[0032] As a technical optimization of this utility model, by setting an L-shaped assist handle 11, when the user needs to drive the toothed plate 63 to rise along the trajectory of the through groove 62 by rotating the gear 64, the torque provided by the L-shaped assist handle 11 can be used to pull down the L-shaped assist handle 11 to start the gear 64 to rotate, drive the toothed plate 63 to rise, and allow the spring 7 to easily deform and generate a rebound force, thereby reducing the difficulty of operation for the user.

[0033] refer to Figure 3A slot 12 is provided on the rear side of the toothed plate 63. A plug 13 is slidably connected to the inner wall of the slot 12. The rear side of the bottom of the plug 13 is in contact with the top of the L-shaped base frame 61.

[0034] As a technical optimization of this utility model, by setting the slot 12 and the insert 13, when the user needs the pressure plate 5 to be fixed at a certain height so that the pressure plate 5 will not interfere with the cleaning of the pad 3 and the maintenance of the mold block 4, the forward rotation of the gear 64 drives the toothed plate 63 to rise to a certain height, so that the slot 12 on the back of the toothed plate 63 passes through the through groove 62 and is located at the top of the L-shaped base frame 61. Then the insert 13 is inserted into the slot 12, thereby limiting the toothed plate 63 and preventing the spring 7 from releasing to push the pressure plate 5 to move. Thus, the pressure plate 5 is fixed at a certain height so that the pad 3 and the mold block 4 can be cleaned and maintained.

[0035] The working principle and usage process of this utility model are as follows: When it is necessary to compress raw materials into hooks, pull the L-shaped assist handle 11 to make the gear 64 rotate forward, and drive the toothed plate 63 that meshes with it to rise along the trajectory of the through groove 62. This causes the U-shaped frame 66 to pull the pressure plate 5 out of the supplementary groove 8 and rise to the top of the mold block 4. During this process, the spring 7 between the U-shaped frame 66 and the L-shaped base frame 61 is compressed, causing it to deform and generate a rebound force. This provides sufficient space for the top of the pad 3. Then, the hook raw material can be placed on the pad 3 and positioned between the two mold blocks 4. After that, the L-shaped handle can be released, so that the gear 64 is no longer restricted by external force. Subsequently, the rebound force of the spring 7 will quickly push the U-shaped frame. As the frame 66 descends, the gear 64, toothed plate 63, and L-shaped assist handle 11 are quickly reset. Subsequently, when the diameter of the raw material is too small and the height is less than that of the mold block 4, the pressure plate 5 will re-insert into the supplementary groove 8, so that the pressure plate 5 can smoothly press the two ends of the top of the raw material. Finally, the user pushes the L-shaped assist handle 11 to reverse the gear 64, driving the toothed plate 63 to press down. Through the indirect transmission of the U-shaped frame 66, the pressure plate 5 can stably press the two ends of the top of the hook raw material. At this time, the drive table 2 can be started to push the two mold blocks 4 to move inward symmetrically to squeeze the raw material, thus processing the hook. This prevents one side of the raw material from lifting up when bending the hook raw material, thus having the advantage of auxiliary positioning.

[0036] In summary, this positioning fixture for processing automotive muffler hooks, by setting up a pressure plate 5, allows the raw material to be placed on the pad 3 when it needs to be processed into a hook. Then, the lifting mechanism 6 drives the pressure plate 5 to press down on both ends of the top of the raw material. After that, the drive table 2 can be activated to drive the mold block 4 to move symmetrically inward, stably pressing the raw material into a hook. This solves the problem that when the two mold blocks move symmetrically inward and bend the raw material, the top of the raw material is not positioned, and one side of the raw material may warp up, which would cause the processed shape and size of the hook to not meet the requirements, affecting product quality and increasing the scrap rate.

[0037] 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.

[0038] 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 positioning tool for processing of a hanger of a vehicle muffler, comprising a workbench (1), a driving bench (2), a backing plate (3) and a die block (4), characterized in that: The bottom of the driving table (2) is fixedly connected with the top of the workbench (1), the bottom of the backing plate (3) is fixedly connected with the top of the driving table (2), the bottom of the mold block (4) is movably connected with the two sides of the top of the backing plate (3), the outer side of the mold block (4) is fixedly connected with the output end of the driving table (2), the two sides of the top of the backing plate (3) are provided with the pressing plate (5), and the rear side of the top of the workbench (1) is fixedly connected with the lifting mechanism (6).

2. The positioning tool for processing the hanger of the automobile muffler according to claim 1, characterized in that: The lifting mechanism (6) comprises an L-shaped base frame (61), the rear side of the bottom of the L-shaped base frame (61) is fixedly connected with the rear side of the top of the workbench (1), a through groove (62) is formed in the front side of the top of the L-shaped base frame (61), a toothed plate (63) is slidably connected with the inner wall of the through groove (62), a gear (64) is engagedly connected with the front side of the toothed plate (63), a supporting block (65) is fixedly connected with the left side of the front side of the top of the L-shaped base frame (61), the left side of the gear (64) is movably connected with the right side of the supporting block (65) through an axle pin, and a U-shaped frame (66) is fixedly connected with the bottom of the toothed plate (63).

3. The positioning tool for processing the hanger of the automobile muffler according to claim 2, characterized in that: The top of the U-shaped frame (66) is fixedly connected with a spring (7), and the other end of the spring (7) is fixedly connected with the front side of the bottom of the L-shaped base frame (61).

4. The positioning tool for processing the hanger of the automobile silencer according to claim 1, characterized in that: Supplementary grooves (8) are formed in the front side and the rear side of the top of the mold block (4).

5. The positioning tool for processing the hanger of the automobile silencer according to claim 2, characterized in that: Limiting rods (9) are fixedly connected with the two sides of the toothed plate (63), limiting grooves (10) are formed in the two sides of the inner wall of the through groove (62), and the surface of the limiting rod (9) is slidably connected with the inner wall of the limiting groove (10).

6. The positioning tool for processing the hanger of the automobile silencer according to claim 2, characterized in that: An L-shaped power handle (11) is fixedly connected with the right side of the gear (64).

7. The positioning tool for processing the hanger of the automobile silencer according to claim 2, characterized in that: A plug groove (12) is formed in the rear side of the toothed plate (63), a plug block (13) is slidably connected with the inner wall of the plug groove (12), and the rear side of the bottom of the plug block (13) is in contact with the top of the L-shaped base frame (61).

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