A riveting tool for electromagnetic valve bushing

Abstract

The utility model provides a kind of riveting tool of electromagnetic valve bushing, the tool includes, lower mould plate, two or more guide pillars being arranged on the lower mould plate, the floating pressing plate being slidably arranged on the guide pillar, the upper die plate being arranged in the lower side of the floating pressing plate, the floating pressing plate is connected with the upper die plate by multiple pre-pressing springs, the pressure head is installed in the lower die plate, the positioning member corresponding with the pressure head is installed in the lower die plate, the reset spring is sleeved on the guide pillar, the upper end of the reset spring acts on the floating pressing plate, and the lower end of the reset spring acts on the lower die plate. The tool structure of the application, riveting force is transmitted by pre-pressing spring, so that the force of the pressure head acting on the workpiece is gradually changed and stable, effectively avoiding rigid impact and preventing workpiece damage.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve processing technology, and more specifically, to a riveting fixture for electromagnetic valve bushings. Background Technology

[0002] The description in this section provides only background information related to the disclosure of this utility model and does not constitute prior art.

[0003] As a commonly used fluid control component, the quality of the bushing of a solenoid valve is crucial to its stability. In existing technologies, when riveting the bushing of a solenoid valve, the force exerted by the pressure head on the bushing is applied instantaneously and rigidly, lacking buffering and adaptive adjustment. This "rigid impact" easily leads to bushing deformation. Therefore, there is an urgent need for a riveting device that can overcome these shortcomings, converting the impactful rigid force into a smooth, flexible force, thus reducing workpiece damage.

[0004] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this utility model and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this utility model. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a riveting fixture for a solenoid valve bushing.

[0006] To solve the above-mentioned technical problems, this utility model provides a riveting fixture for a solenoid valve bushing. The fixture includes a lower template, two or more guide posts disposed on the lower template, a floating pressure plate disposed on the guide posts that can slide up and down, and an upper template disposed below the floating pressure plate. The floating pressure plate and the upper template are connected by multiple preload springs. A pressure head is installed under the upper template, and a positioning component corresponding to the pressure head is installed on the lower template. A return spring is sleeved on the guide posts. The upper end of the return spring acts on the floating pressure plate, and the lower end of the return spring acts on the lower template.

[0007] Preferably, the lower surface of the floating pressure plate is further equipped with multiple guide rods, the preload spring is sleeved on the guide rods, and the upper template is fixedly equipped with multiple linear bearings. The lower end of the guide rod passes through the linear bearing and can slide up and down relative to the linear bearing. This guide rod ensures that the upper template can only move vertically up and down, preventing swaying in the front-back and left-right directions. This structure can improve the accuracy of the riveting position.

[0008] Preferably, the lower end of the guide rod is a limiting end, which is located below the linear bearing to prevent the guide rod from coming off the linear bearing. The upper end of the preload spring acts on the floating pressure plate, and the lower end of the preload spring acts on the upper template.

[0009] Preferably, the pressure head is equipped with a pressure sensor to detect the pressure applied to the pressure head during the riveting process. The tooling also includes a displacement sensor to detect the total descent distance of the upper template during riveting. During riveting, if the displacement measured by the displacement sensor is within a preset range and the pressure measured by the pressure sensor is within a preset range, the product is judged to be good; otherwise, it is judged to be defective. This solution provides data standards for workpiece quality through displacement-pressure curves, thereby diagnosing process abnormalities and product defects.

[0010] Preferably, the floating pressure plate is fixedly installed with a sliding sleeve, the upper end of the guide post passes through the sliding sleeve, and the floating pressure plate moves up and down along the guide post through the sliding sleeve.

[0011] Preferably, the positioning element includes a connecting seat fixed to the upper surface of the lower template and a connecting column installed on the connecting seat. A mounting column is provided on the connecting column, and the mounting column is coaxially arranged with the connecting column, and the radius of the mounting column is smaller than the radius of the connecting column.

[0012] Preferably, the bushing includes a sleeve and a plunger, the plunger is mounted on the mounting post, the lower end of the bushing is sleeved on the plunger, and the pressure head presses down on the sleeve to rivet the sleeve to the plunger.

[0013] Based on the above technical solution, the beneficial effects of this utility model are as follows:

[0014] This utility model discloses a riveting fixture for a solenoid valve bushing. Its working process is as follows: A floating pressure plate is driven downwards, first bringing the upper template into contact with the workpiece; then, the floating pressure plate continues to press down, compressing the preload spring. This preload spring pushes the upper template and its lower pressure head to apply pressure to the bushing, completing the riveting process. During this process, the riveting force is transmitted through the preload spring, ensuring that the force exerted by the pressure head on the workpiece is gradual and stable, effectively avoiding rigid impact and preventing workpiece damage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the riveting fixture for a solenoid valve bushing according to the present invention.

[0016] Figure 2This is a schematic diagram of the riveting fixture for a solenoid valve bushing according to the present invention.

[0017] Figure 3 This is a partial structural diagram of the tooling of this utility model.

[0018] Figure 4 This is an exploded view of part of the tooling structure of this utility model.

[0019] Figure 5 This is a structural schematic diagram of the positioning component of this utility model.

[0020] Figure 6 This is a schematic diagram of the structure of the solenoid valve bushing.

[0021] The components are: 1. Floating pressure plate; 2. Upper template; 3. Lower template; 4. Guide post; 5. Guide rod; 6. Preload spring; 7. Linear bearing; 8. Limiting end; 9. Sliding sleeve; 10. Pressure head; 11. Positioning component; 111. Connecting seat; 112. Connecting post; 113. Mounting post; 101. Sleeve; 102. Plunger. Detailed Implementation

[0022] 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.

[0023] It should be noted that in the description of this utility model, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] like Figure 1 and 2As shown, this utility model provides a riveting fixture for a solenoid valve bushing. The fixture includes a lower template 3, two or more guide posts 4 disposed on the lower template 3, a floating pressure plate 1 slidably disposed on the guide posts 4, and an upper template 2 disposed below the floating pressure plate 1. The floating pressure plate 1 and the upper template 2 are connected by multiple preload springs 6. A pressure head 10 is installed under the upper template 2. A positioning element 11 corresponding to the pressure head 10 is installed on the lower template 3. A return spring is sleeved on the guide post 4. The upper end of the return spring acts on the floating pressure plate 1, and the lower end of the return spring acts on the lower template 3. A sliding sleeve 9 is fixedly installed on the floating pressure plate 1. The upper end of the guide post 4 passes through the sliding sleeve 9, and the floating pressure plate 1 moves up and down along the guide post 4 through the sliding sleeve 9.

[0025] like Figure 2 and 3 As shown, the lower surface of the floating pressure plate 1 is also equipped with multiple guide rods 5. The preload spring 6 is sleeved on the guide rod 5. The upper template 2 is fixedly equipped with multiple linear bearings 7. The lower end of the guide rod 5 passes through the linear bearing 7 and can slide up and down relative to the linear bearing 7. The guide rod 5 ensures that the upper template 2 can only move vertically up and down, preventing swaying in the front-back and left-right directions. This structure can improve the accuracy of the riveting position. The lower end of the guide rod 5 is a limiting end 8, which is located below the linear bearing 7 to prevent the guide rod 5 from dislodging from the linear bearing 7. The upper end of the preload spring 6 acts on the floating pressure plate 1, and the lower end of the preload spring 6 acts on the upper template 2.

[0026] In a preferred embodiment, a pressure sensor is installed inside the pressure head 10 to detect the pressure applied to the pressure head 10 during the riveting process. The tooling also includes a displacement sensor to detect the total descent distance of the upper template 2 during the riveting process. During riveting, if the displacement measured by the displacement sensor is within a preset range and the pressure measured by the pressure sensor is within a preset range, the product is judged to be good; otherwise, it is judged to be defective. This solution provides data standards for workpiece quality through displacement-pressure curves, thereby diagnosing process abnormalities and product defects.

[0027] like Figure 5 As shown, the positioning component 11 includes a connecting seat 111 fixed to the upper surface of the lower template 3, and a connecting post 112 mounted on the connecting seat 111. A mounting post 113 is provided on the connecting post 112, and the mounting post 113 is coaxially arranged with the connecting post 112, with the radius of the mounting post 113 being smaller than the radius of the connecting post 112. Figure 6 As shown, the bushing includes a sleeve 101 and a plunger 102. The plunger 102 is mounted on the mounting post 113. The lower end of the bushing is fitted onto the plunger 102. The pressure head 10 presses down on the sleeve 101 to rivet the sleeve 101 and the plunger 102.

[0028] The working process of this tooling is as follows: The floating pressure plate 1 is driven downwards, first bringing the upper template 2 into contact with the workpiece; then the floating pressure plate 1 continues to press down, compressing the preload spring 6. The preload spring 6 pushes the upper template 2 and its lower pressure head 10 to apply pressure to the bushing, completing the riveting process. During this process, the riveting force is transmitted through the preload spring 6, ensuring that the force exerted by the pressure head 10 on the workpiece is gradual and stable, effectively avoiding rigid impact and preventing workpiece damage.

[0029] The above-described embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A riveting fixture for a solenoid valve bushing, characterized in that, The tooling includes a lower template, two or more guide pillars disposed on the lower template, a floating pressure plate disposed on the guide pillars that can slide up and down, and an upper template disposed below the floating pressure plate. The floating pressure plate is connected to the upper template by multiple pre-compression springs. A pressure head is installed under the upper template, and a positioning component corresponding to the pressure head is installed on the lower template. A return spring is sleeved on the guide post. The upper end of the return spring acts on the floating pressure plate, and the lower end of the return spring acts on the lower template.

2. The tooling according to claim 1, characterized in that, The lower surface of the floating pressure plate is also equipped with multiple guide rods, the preload spring is sleeved on the guide rods, the upper template is fixedly equipped with multiple linear bearings, the lower end of the guide rod passes through the linear bearings and can slide up and down relative to the linear bearings.

3. The tooling according to claim 2, characterized in that, The lower end of the guide rod is a limiting end, which is located below the linear bearing to prevent the guide rod from coming off the linear bearing. The upper end of the preload spring acts on the floating pressure plate, and the lower end of the preload spring acts on the upper template.

4. The tooling according to claim 3, characterized in that, The press head is equipped with a pressure sensor, which is used to detect the pressure on the press head during the riveting process. The tooling also includes a displacement sensor, which is used to detect the total descent distance of the upper template during the riveting process. During the riveting process, when the displacement measured by the displacement sensor is within a preset range and the pressure measured by the pressure sensor is within a preset range, it is judged as a good product; otherwise, it is a defective product.

5. The tooling according to claim 4, characterized in that, The floating pressure plate is fixedly installed with a sliding sleeve, the upper end of the guide post passes through the sliding sleeve, and the floating pressure plate moves up and down along the guide post through the sliding sleeve.

6. The tooling according to claim 5, characterized in that, The positioning component includes a connecting seat fixed to the upper surface of the lower template and a connecting column mounted on the connecting seat. A mounting column is provided on the connecting column, and the mounting column is coaxially arranged with the connecting column, and the radius of the mounting column is smaller than the radius of the connecting column.

7. The tooling according to claim 6, characterized in that, The bushing includes a sleeve and a plunger. The plunger is mounted on the mounting post. The lower end of the bushing is fitted onto the plunger. The pressure head presses down on the sleeve to rivet the sleeve to the plunger.

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