A riveting device for electromagnetic valve bushing

Abstract

The utility model provides a kind of riveting device of electromagnetic valve sleeve, including frame, riveting machine and hand press machine being installed on frame, the hand press machine includes, machine table, be located on the guiding sleeve of machine table, the lower pressing column of being slidable through the guiding sleeve along up-down direction, the hand press machine further includes first rotating member, second rotating member, handle, mounting portion and connecting shaft, the lower end of the second rotating member is rotatably connected with the upper end of the lower pressing column by first rotating shaft, the upper end of the second rotating member and first rotating member are rotatably connected by second rotating shaft, the first rotating member is rotatably mounted on the mounting portion by third rotating shaft, the handle is fixedly connected with the first rotating member by the connecting shaft, when pressing down the handle, the junction of the first rotating member and second rotating member moves downward, the lower end of the second rotating member presses down the lower pressing column.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve processing technology, and more specifically, to a riveting device 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 fluid control element, a solenoid valve typically incorporates a bushing structure, comprising a sleeve and a plunger, which requires press-fitting during manufacturing. This press-fitting process demands strict control over the magnitude and direction of the applied pressure. In existing technologies, some riveting devices utilize automated hydraulic equipment. While these devices offer precise pressure control, they are costly, complex to debug, and lack flexibility and versatility. Therefore, there is an urgent need in this field for a riveting device that is simple in structure, low in cost, and capable of preventing overpressure.

[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 device for a solenoid valve bushing.

[0006] To solve the above-mentioned technical problems, this utility model provides a riveting device for a solenoid valve bushing, including a frame, a riveting machine mounted on the frame, and a hand press. The hand press includes a machine base, a guide sleeve mounted on the machine base, and a lower pressing column that slides through the guide sleeve in a vertical direction. The hand press also includes a first rotating component, a second rotating component, a handle, a mounting part, and a connecting shaft. The lower end of the second rotating component is rotatably connected to the upper end of the lower pressing column via a first rotating shaft. The upper end of the second rotating component and the first rotating component are rotatably connected via a second rotating shaft. The first rotating component is rotatably mounted on the mounting part via a third rotating shaft. The handle is fixedly connected to the first rotating component via the connecting shaft. When the handle is pressed down, the connection between the first and second rotating components moves downward, and the lower end of the second rotating component presses down on the lower pressing column, causing the lower pressing column to slide downward along the guide sleeve. The riveting machine is mounted on the mounting platform, and the lower end of the lower pressing column is used to press down on the upper surface of the riveting machine.

[0007] Preferably, the riveting machine includes a lower template, two or more guide pillars disposed on the lower template, a floating pressure plate slidably disposed on the guide pillars, 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 mounted on the lower part of the upper template, and a lower positioning post corresponding to the pressure head is mounted on the lower template. A return spring is sleeved on the guide pillar. 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. The lower end of the lower positioning post is used to press down on the upper surface of the floating pressure plate. The working process of the riveting machine is as follows: The hand press drives the floating pressure plate downward, first making the upper template contact the workpiece; then, the floating pressure plate continues to be pressed down, compressing the preload springs. The preload springs push the upper template and the pressure head below it to apply pressure to the bushing, completing the riveting. During this process, the riveting force is transmitted through the preload springs, so that the force of the pressure head acting on the workpiece is gradual and stable, effectively avoiding rigid impact and preventing workpiece damage.

[0008] Preferably, the lower surface of the floating pressure plate is further provided with a limiting post. When the lower end of the limiting post abuts against the upper surface of the lower template, the floating pressure plate reaches its downward movement limit position.

[0009] 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 ends of the guide rods pass through the linear bearings and can slide up and down relative to the linear bearings. The upper ends of the preload springs act on the floating pressure plate, and the lower ends of the preload springs act on the upper template. This guide rod design ensures that the upper template can only move vertically up and down, preventing swaying in the front-back, left-right, and right-backward directions. This structure improves the accuracy of the riveting position.

[0010] Preferably, a pressure sensor is provided inside the pressure head.

[0011] Preferably, the upper template is provided with a displacement rod, and the riveting device further includes a displacement sensor. The displacement sensor is used to detect the total descent distance of the displacement rod during the riveting process. The total descent distance is the displacement from the moment the displacement sensor detects the displacement rod until the riveting is completed.

[0012] Preferably, 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, 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.

[0013] Preferably, the riveting device further includes a waste collection box, which includes a box body and a channel installed on the box body. The defective product enters the box body through the upper opening of the channel. A defective product detection sensor is installed in the channel. When a product is judged to be defective, the defective product detection sensor is used to detect whether an object passes through. When an object passes through, the riveting device can continue to operate; otherwise, the riveting device stops operating.

[0014] Preferably, the bushing includes a sleeve and a plunger, the plunger is mounted on the lower positioning 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.

[0015] Based on the above technical solution, the beneficial effects of this utility model are as follows:

[0016] The riveting device for the solenoid valve bushing of this utility model utilizes a lever-linked structure consisting of a first rotating component, a second rotating component, and a handle. This structure converts the downward pressing action of the handle into the vertical pressure of the pressing column, amplifying the force using the lever principle, allowing the operator to drive the pressing column with relatively little hand force. Furthermore, the structure of this hand press prevents excessive pressure caused by excessive force applied by the operator. When the axes of the first rotating component, the second rotating component, and the pressing column are close to or reach a straight line, the pressing column cannot continue to move downwards, thus limiting the maximum stroke of the pressing column and preventing overpressure. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the riveting device of this utility model.

[0018] Figure 2 This is a structural schematic diagram of the riveting machine and hand press of this utility model.

[0019] Figure 3 This is a structural schematic diagram of the riveting machine of this utility model.

[0020] Figure 4 This is a structural schematic diagram of the riveting machine of this utility model.

[0021] Figure 5 This is a structural schematic diagram of the waste collection box of this utility model.

[0022] Figure 6 This is a schematic diagram of the bushing structure of this application.

[0023] Figure 7 This is a schematic diagram of the hand press of this application.

[0024] Figure 8 This is a partial structural diagram of the hand press of this application.

[0025] Among them, 100, frame; 200, hand press; 300, riveting press; 400, displacement sensor; 500, waste collection box; 1, floating pressure plate; 2, upper template; 3, lower template; 4, guide post; 5, limiting post; 6, mold handle; 7, preload spring; 8, guide rod; 9, pressure head; 10, lower positioning post; 11, sliding sleeve; 12, displacement rod; 13, linear bearing; 51, housing; 52, channel; 53, opening; 601, sleeve; 602, plunger; 21, handle; 22, machine base; 23, mounting platform; 24, lower pressure post; 25, guide sleeve; 26, connecting shaft; 27, first rotating component; 28, second rotating component; 29, first rotating shaft; 210, mounting part. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] like Figure 1 As shown, this utility model provides a riveting device for a solenoid valve bushing, including a frame 100, a riveting machine 300 mounted on the frame 100, and a hand-operated riveting machine 200. Figure 7 and 8As shown, the hand press 200 includes a machine base 22, a guide sleeve 25 disposed on the machine base 22, and a lower pressing column 24 slidably passing through the guide sleeve 25 in a vertical direction. The hand press 200 also includes a first rotating component 27, a second rotating component 28, a handle 21, a mounting part 210, and a connecting shaft 26. The lower end of the second rotating component 28 is rotatably connected to the upper end of the lower pressing column 24 via a first rotating shaft 29. The upper end of the second rotating component 28 and the first rotating component 27 are rotatably connected via a second rotating shaft. The first rotating component 27 is connected via a third rotating shaft 26. The rotating shaft is rotatably mounted on the mounting part 210. The handle 21 is fixedly connected to the first rotating member 27 via the connecting shaft 26. When the handle 21 is pressed down, the connection between the first rotating member 27 and the second rotating member 28 moves downward. The lower end of the second rotating member 28 presses down on the pressing column 24, causing the pressing column 24 to slide downward along the guide sleeve 25. The riveting machine 300 is mounted on the mounting platform 23. The lower end of the pressing column 24 is used to press down on the upper surface of the riveting machine 300.

[0029] like Figure 2-4As shown, the riveting machine 300 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 7. A pressure head 9 is installed on the lower part of the upper template 2. A lower positioning post 10 corresponding to the pressure head 9 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. The lower end of the lower pressure post 24 is used to press down on the upper surface of the floating pressure plate 1. The working process of the riveting machine 300 is as follows: The hand press 200 drives the floating pressure plate 1 downward, first making the upper template 2 contact the workpiece; then it continues to press down on the floating pressure plate 1, compressing the preload springs 7. The preload springs 7 push the upper template 2 and the pressure head 9 on its lower side to apply pressure to the bushing, completing the riveting. During this process, the riveting pressure is transmitted through the preload spring 7, making the force exerted by the pressure head 9 on the workpiece gradual and stable, effectively avoiding rigid impact and preventing workpiece damage. The lower surface of the floating pressure plate 1 is also provided with a limit post 5. When the lower end of the limit post 5 abuts against the upper surface of the lower template 3, the floating pressure plate 1 reaches its downward movement limit position. Multiple guide rods 8 are also installed on the lower surface of the floating pressure plate 1. The preload spring 7 is sleeved on the guide rod 8. Multiple linear bearings 13 are fixedly installed on the upper template 2. The lower end of the guide rod 8 passes through the linear bearing 13 and can slide up and down relative to the linear bearing 13. The upper end of the preload spring 7 acts on the floating pressure plate 1, and the lower end of the preload spring 7 acts on the upper template 2. The guide rod 8 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 improves the accuracy of the riveting position.

[0030] In a preferred embodiment, a pressure sensor is provided inside the pressure head 9. A displacement rod 12 is provided on the upper template 2, and the riveting device further includes a displacement sensor 400. The displacement sensor 400 is used to detect the total descent distance of the displacement rod 12 during the riveting process. The total descent distance is the displacement from the moment the displacement sensor 400 detects the displacement rod 12 until the riveting is completed. During the riveting process, when the displacement measured by the displacement sensor 400 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 a displacement-pressure curve, thereby diagnosing process abnormalities and product defects.

[0031] like Figure 5As shown, the riveting device also includes a waste collection box 500, which includes a box body 51 and a channel 52 installed on the box body 51. Defective products enter the box body 51 through the upper opening 53 of the channel 52. A defective product detection sensor is installed in the channel 52. When a product is judged to be defective, the defective product detection sensor detects whether an object is passing through. If an object passes through, the riveting device can continue to operate; otherwise, the riveting device stops operating. Figure 6 As shown, the bushing includes a sleeve 601 and a plunger 602. The plunger 602 is mounted on the lower positioning post 10. The lower end of the bushing is sleeved on the plunger 602. The pressure head 9 presses down on the sleeve 601 to rivet the sleeve 601 and the plunger 602.

[0032] The riveting device for the solenoid valve bushing of this utility model utilizes a lever linkage structure composed of a first rotating component 27, a second rotating component 28, and a handle 21. This structure converts the downward pressing action of the handle 21 into the vertical pressure of the pressing column 24, amplifying the force using the lever principle, allowing the operator to drive the pressing column 24 with relatively little hand force. Furthermore, the structure of this hand press 200 prevents excessive pressure caused by excessive force applied by the operator. When the axes of the first rotating component 27, the second rotating component 28, and the pressing column 24 are close to or reach a straight line, the pressing column 24 cannot continue to move downwards, thus limiting the maximum stroke of the pressing column 24 and preventing overpressure.

[0033] 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 device for a solenoid valve bushing, characterized in that, The system includes a frame, a riveting machine mounted on the frame, and a hand-operated riveting machine. The hand-operated riveting machine includes a machine base, a guide sleeve mounted on the machine base, and a downward pressing column that slides through the guide sleeve in a vertical direction. The hand press also includes a first rotating component, a second rotating component, a handle, a mounting part, and a connecting shaft. The lower end of the second rotating component is rotatably connected to the upper end of the lower pressure column via a first rotating shaft. The upper end of the second rotating component and the first rotating component are rotatably connected via a second rotating shaft. The first rotating component is rotatably mounted on the mounting part via a third rotating shaft. The handle is fixedly connected to the first rotating component via a connecting shaft. When the handle is pressed down, the connection between the first rotating member and the second rotating member moves downward, and the lower end of the second rotating member presses down on the pressing column, causing the pressing column to slide downward along the guide sleeve. The riveting machine is mounted on the installation platform, and the lower end of the pressing column is used to press down on the upper surface of the riveting machine.

2. The riveting device according to claim 1, characterized in that, The riveting machine includes a lower template, two or more guide pillars disposed on the lower template, a floating pressure plate disposed on the guide pillars and slidably 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 on the lower part of the upper template. A lower positioning post corresponding to the pressure head is installed on the lower template. A return spring is sleeved on the guide pillar. 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. The lower end of the lower pressure post is used to press down on the upper surface of the floating pressure plate.

3. The riveting device according to claim 2, characterized in that, The lower surface of the floating pressure plate is also provided with a limiting post. When the lower end of the limiting post abuts against the upper surface of the lower template, the floating pressure plate reaches its downward movement limit position.

4. The riveting device according to claim 3, 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, 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.

5. The riveting device according to claim 4, characterized in that, A pressure sensor is installed inside the pressure head.

6. The riveting device according to claim 5, characterized in that, The upper template is provided with a displacement rod, and the riveting device also includes a displacement sensor. The displacement sensor is used to detect the total descent distance of the displacement rod during the riveting process. The total descent distance is the displacement from the moment the displacement sensor detects the displacement rod until the riveting is completed.

7. The riveting device according to claim 6, characterized in that, During the riveting process, 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.

8. The riveting device according to claim 7, characterized in that, The riveting device further includes a waste collection box, which comprises a box body and a channel installed on the box body. The defective products enter the box body through the upper opening of the channel. The channel is equipped with a defective product detection sensor. When a product is judged to be defective, the defective product detection sensor is used to detect whether an object is passing through. When an object passes through, the riveting device can continue to operate; otherwise, the riveting device stops operating.

9. The riveting device according to claim 8, characterized in that, The bushing includes a sleeve and a plunger. The plunger is mounted on the lower positioning post. The lower end of the bushing is sleeved on the plunger. The pressure head presses down on the sleeve to rivet the sleeve to the plunger.

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