Valve body expansion apparatus

Abstract

The application discloses a valve body expansion sleeve equipment and belongs to the field of valve body production.The valve body expansion sleeve equipment comprises a workbench, the top surface of the workbench is fixed with two sliding rails arranged in parallel with each other, the two sliding rails are slidably provided with a moving seat for placing a valve body, the top surface of the moving seat is fixed with a pneumatic clamp jaw one, the top surface of the workbench is fixed with mounting plates on both sides, the sides of the two mounting plates away from each other are fixed with electric cylinders, the opposite sides of the two mounting plates are provided with through holes, the piston rods of the electric cylinders pass through the through holes, the end of the piston rod of the electric cylinder is fixed with a mounting seat, and the side of the mounting seat away from the electric cylinder is provided with an expansion sleeve assembly.The application has the effect that the workpiece can be positioned and clamped from the inner wall of the existing inner hole or inner cavity of the valve body, and damage to the precise surface of the valve body caused by external clamping can be effectively avoided.

Description

Technical Field

[0001] This invention relates to the technical field of valve body manufacturing, and in particular to a valve body expansion sleeve device. Background Technology

[0002] As a core component of fluid control systems, the valve body is widely used in automotive steering systems, hydraulic control systems, fuel injection systems, and various industrial valves. Its internal structure typically includes multiple precision-fitted structures such as channels, conical surfaces, and sealing surfaces, requiring extremely high machining accuracy. During the turning and grinding processes of the valve body, ensuring reliable clamping and maintaining machining precision is a crucial aspect of the manufacturing process.

[0003] When processing the valve body, clamps are usually set on both sides of the valve body to clamp the sides of the valve body. As the valve body design becomes lighter and thinner, clamping and fixing the sides of the valve body by the clamps on both sides can easily lead to damage and deformation of the valve body surface. Summary of the Invention

[0004] In order to address the problem that as valve bodies become increasingly lightweight and thin-walled, clamping and fixing the sides of the valve body with fixtures on both sides can easily lead to damage and deformation of the valve body surface, this application provides a valve body expansion sleeve device.

[0005] The valve body expansion sleeve device provided in this application adopts the following technical solution: A valve body expansion sleeve device includes a worktable. Two parallel slide rails are fixed to the top surface of the worktable. A movable seat for placing a valve body is slidably mounted on the two slide rails. A pneumatic gripper is fixed to the top surface of the movable seat. Mounting plates are fixed to both sides of the top surface of the worktable. Electric cylinders are fixed to the opposite sides of the two mounting plates. Through holes are opened on the opposite sides of the two mounting plates. The piston rod of the electric cylinder passes through the through holes. A mounting seat is fixed to the end of the piston rod of the electric cylinder. An expansion sleeve assembly is provided on the side of the mounting seat away from the electric cylinder.

[0006] By adopting the above technical solution, the robot grasps the valve body and places it on the moving seat. Then, two electric cylinders are activated, causing the piston rods of the two electric cylinders to move the expansion sleeve assembly toward the valve body, so that the expansion sleeve assembly is inserted into the valve body and pressed against the inner wall of the valve body. This allows the workpiece to be positioned and clamped from the inner wall of the valve body's existing inner hole or cavity. This effectively avoids damage and deformation to the precision surface of the valve body caused by external clamping methods, while achieving high-precision centering of the workpiece's rotation center.

[0007] Preferably, each end of the two slide rails is slidably provided with a sliding seat, the top of the sliding seat is fixed with a fixing plate, and the end face of the electric cylinder piston rod is fixed to the side of the fixing plate.

[0008] By adopting the above technical solution, when the electric cylinder is started, the piston rod of the electric cylinder drives the fixed plate to move, and the fixed plate drives the sliding seat to move, thereby reducing the possibility of displacement when the expansion sleeve assembly moves.

[0009] Preferably, the expansion sleeve assembly includes an expansion sleeve rod fixed to the side of the fixing plate away from the electric cylinder, and the outer peripheral surface of the expansion sleeve rod away from the fixing rod is a tapered surface.

[0010] By adopting the above technical solution, when the electric cylinder is started, the piston rod of the electric cylinder pushes the fixed plate to move, and the fixed plate drives the expansion sleeve rod to move, so that the expansion sleeve rod is inserted into the valve body, and the outer circumferential surface of the expansion sleeve rod abuts against the inner wall of the valve body, thereby completing the fixation of the valve body.

[0011] Preferably, a positioning block is fixed to the side of the movable seat, and a pneumatic gripper is fixed to the middle of one side of the top surface of the workbench, the pneumatic gripper being able to hold the positioning block.

[0012] By adopting the above technical solution, the pneumatic gripper two is activated, and the pneumatic gripper two grips the positioning block, thereby making it easier to position the moving seat in the middle of the worktable.

[0013] Preferably, two connecting posts are fixed between the two mounting plates, and two connecting plates are sleeved on the outer periphery of the two connecting posts. The pneumatic gripper is located between the two connecting plates, and round holes are opened on the mutually distant sides of the two connecting plates, through which the expansion rod can pass.

[0014] By adopting the above technical solution, when the electric cylinder is started, the piston rod of the electric cylinder drives the expansion sleeve rod to move towards the electric cylinder. When the expansion sleeve rod is tightly inserted into the valve body, the expansion sleeve rod drives the valve body to move, so that the valve body abuts against the connecting plate, thereby facilitating the removal of the expansion sleeve rod from the valve body.

[0015] Preferably, the expansion sleeve assembly includes a movable plate disposed on the side of the fixed plate away from the electric cylinder, a connector is provided between the movable plate and the fixed plate, a mounting post is fixed on the side of the movable plate away from the fixed plate, a plurality of tensioning blocks are provided on the periphery of the mounting post, a connecting block is hinged to both ends of the bottom surface of the tensioning block, the bottom end of the connecting block is hinged to the outer periphery of the mounting post, and the connector can drive the tensioning block to move.

[0016] By adopting the above technical solution, when the electric cylinder is started, the piston rod of the electric cylinder drives the fixed plate to move towards the valve body. The fixed plate drives the moving plate to move through the connecting piece. The moving plate drives the mounting column to move, so that the mounting column is inserted into the valve body. The side of the moving plate abuts against the side of the valve body. The piston rod of the electric cylinder continues to push the fixed plate to move, so that the fixed plate pushes the connecting piece to move. The connecting piece pushes the tensioning block to rotate, so that the outer circumferential surface of the tensioning block abuts against the inner wall of the valve body, thereby tensioning the valve body.

[0017] Preferably, the connector includes a plurality of sleeves fixed to the side of the movable plate near the fixed plate, the plurality of sleeves corresponding to a plurality of tensioning blocks, a movable rod passing through the sleeve, one end of the movable rod being fixed to the side of the fixed plate near the movable plate, the other end of the movable rod passing through the movable plate, the movable rod being slidably connected to the movable plate, a driving block being fixed to the bottom surface of the tensioning block near the movable plate, and the end of the movable rod away from the fixed plate abutting against the driving block.

[0018] By adopting the above technical solution, the piston rod of the electric cylinder drives the fixed plate to move towards the valve body. The fixed plate pushes the moving rod to move, which in turn pushes the drive block to move. This causes the drive block to rotate the tension block, thereby pressing the tension block against the inner wall of the valve body.

[0019] Preferably, a spring is fitted around the periphery of the sleeve, one end of the spring is fixedly connected to the side of the fixed plate, and the other end of the spring is fixedly connected to the side of the movable plate.

[0020] By adopting the above technical solution, when the electric cylinder is activated and the mounting column is moved out of the valve body, the moving plate moves away from the fixed plate under the elastic force of the spring, so that the moving rod is reset and the moving rod can drive the driving block to move next time.

[0021] Preferably, a tension spring is provided between the tensioning block and the mounting column, one end of the tension spring is fixedly connected to the connecting block, and the other end of the tension spring is fixedly connected to the outer peripheral surface of the mounting column.

[0022] By adopting the above technical solution, when the electric cylinder is started and the mounting column is moved out of the valve body, the connecting block rotates under the elastic force of the tension spring, causing the tension block to rotate. The top surface of the tension block separates from the inner wall of the valve body, thus facilitating the removal of the mounting column from the valve body.

[0023] Preferably, a rubber block is fixed to the top surface of the tensioning block.

[0024] By adopting the above technical solution, a rubber block is fixed on the top surface of the tensioning block. When the tensioning block presses against the inner wall of the valve body, the rubber block protects the inner wall of the valve body, thereby reducing the possibility of deformation of the inner wall of the valve body when the tensioning block presses against the valve body.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The robot picks up the valve body and places it on the moving seat. Then, two electric cylinders are activated, causing the piston rods of the two electric cylinders to move the expansion sleeve assembly toward the valve body. The expansion sleeve assembly is inserted into the valve body and pressed against the inner wall of the valve body. This allows the workpiece to be positioned and clamped from the inner wall of the valve body's existing inner hole or cavity. This effectively avoids damage and deformation to the precision surface of the valve body caused by external clamping methods, while achieving high-precision centering of the workpiece's rotation center. 2. When the electric cylinder is started, the piston rod of the electric cylinder pushes the fixed plate to move, and the fixed plate drives the expansion sleeve rod to move, so that the expansion sleeve rod is inserted into the valve body, and the outer circumferential surface of the expansion sleeve rod abuts against the inner wall of the valve body, thereby completing the fixation of the valve body; 3. When the electric cylinder is activated, the piston rod of the electric cylinder drives the fixed plate to move towards the valve body. The fixed plate moves the moving plate through the connecting piece, which in turn moves the mounting column, allowing the mounting column to be inserted into the valve body. The side of the moving plate abuts against the side of the valve body. The piston rod of the electric cylinder continues to push the fixed plate, which in turn pushes the connecting piece to move. The connecting piece then pushes the tensioning block to rotate, causing the outer circumference of the tensioning block to abut against the inner wall of the valve body, thereby tensioning the valve body. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the valve body expansion sleeve device in Embodiment 1 of this application.

[0027] Figure 2 This is a schematic diagram of the structure of the electric cylinder in Embodiment 1 of this application.

[0028] Figure 3 This is a schematic diagram of the expansion sleeve rod in Embodiment 1 of this application.

[0029] Figure 4 This is a schematic diagram of the structure of the movable plate in Embodiment 2 of this application.

[0030] Figure 5 This is a schematic diagram of the sleeve structure in Embodiment 2 of this application.

[0031] Reference numerals: 1. Workbench; 11. Slide rail; 12. Moving seat; 13. Pneumatic gripper one; 14. Positioning block; 15. Pneumatic gripper two; 2. Mounting plate; 21. Electric cylinder; 22. Through hole; 23. Mounting seat; 24. Sliding seat; 25. Fixed plate; 26. Tensioning rod; 27. Conical surface; 3. Connecting column; 31. Connecting plate; 32. Round hole; 4. Moving plate; 41. Sleeve; 42. Tensioning block; 43. Connecting block; 44. Moving rod; 45. Spring; 46. Tension spring; 47. Mounting column; 48. Rubber block. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0033] This application discloses a valve body expansion sleeve device. Example

[0034] Reference Figure 1 and Figure 2 A valve body expansion sleeve device includes a workbench 1. Two parallel slide rails 11 are fixed to the top surface of the workbench 1. A movable seat 12 for placing the valve body is slidably mounted on the two slide rails 11. A pneumatic gripper 13 for clamping the valve body is fixed to the top surface of the movable seat 12. A positioning block 14 is fixed to the side of the movable seat 12. A second pneumatic gripper 15 is fixed to the middle of one side of the top surface of the workbench 1, and the second pneumatic gripper 15 can clamp the positioning block 14.

[0035] Reference Figure 1 , Figure 2 and Figure 3 Mounting plates 2 are fixed to both sides of the top surface of the workbench 1. Electric cylinders 21 are fixed to the sides of the two mounting plates 2 that are far apart from each other. Through holes 22 are opened on the opposite sides of the two mounting plates 2. The piston rod of the electric cylinder 21 passes through the through holes 22. The end of the piston rod of the electric cylinder 21 is fixed to a mounting seat 23. Sliding seats 24 are slidably arranged at both ends of the two slide rails 11. A fixing plate 25 is fixed to the top of the sliding seat 24. The end face of the mounting seat 23 away from the electric cylinder 21 is fixed to the side of the fixing plate 25. An expansion sleeve 26 is fixed to the side of the fixing plate 25 away from the electric cylinder 21 by bolts. The outer circumference of the expansion sleeve 26 away from the fixing plate 25 is a tapered surface 27.

[0036] Reference Figure 2 and Figure 3 Two connecting posts 3 are fixed between the two mounting plates 2. Two connecting plates 31 are sleeved on the outer periphery of the two connecting posts 3. The pneumatic gripper 13 is located between the two connecting plates 31. The two connecting plates 31 are provided with round holes 32 on their mutually distant sides. The expansion sleeve rod 26 can pass through the round holes 32.

[0037] The implementation principle of Example 1 is as follows: The robot grasps the valve body and places it on the movable seat 12. Then, the pneumatic gripper 13 is activated, clamping the valve body onto the movable seat 12. Next, the pneumatic gripper 25 is activated, clamping the positioning block 14, positioning the movable seat 12 in the middle of the workpiece stage. Then, the pneumatic gripper 13 is activated again, releasing the valve body. Simultaneously, two electric cylinders 21 are activated. The piston rods of the electric cylinders 21 drive the fixed plate 25 to move, which in turn drives the expansion sleeve rods 26 to move. The two expansion sleeve rods 26 are inserted into the flow channels on both sides of the valve body, with their outer circumferential surfaces abutting against the inner wall of the valve body. This allows for positioning and clamping of the workpiece from the inner wall of the valve body's existing inner hole or cavity, effectively avoiding damage to the valve body's precision surfaces caused by external clamping methods, while simultaneously achieving high-precision centering of the workpiece's rotation center. Example

[0038] Reference Figure 2 and Figure 4 The difference between this application and Embodiment 1 is that: a movable plate 4 is provided on the side of the fixed plate 25 away from the electric cylinder 21; a mounting post 47 is fixed on the side of the movable plate 4 away from the fixed plate 25; a plurality of tensioning blocks 42 are provided around the mounting post 47; a rubber block 48 is fixed on the top surface of the tensioning block 42; connecting blocks 43 are hinged to both ends of the bottom surface of the tensioning block 42; the bottom end of the connecting block 43 is hinged to the outer peripheral surface of the mounting post 47; a driving block 49 is fixed to the bottom end of the tensioning block 42 near the movable plate 4; a tension spring 46 is provided between the tensioning block 42 and the mounting post 47; one end of the tension spring 46 is fixedly connected to the connecting block 43; and the other end of the tension spring 46 is fixedly connected to the outer peripheral surface of the mounting post 47.

[0039] Reference Figure 4 and Figure 5 Multiple sleeves 41 are fixed to the side of the movable plate 4 near the fixed plate 25. Each sleeve 41 corresponds to a multiple tensioning block 42. A movable rod 44 passes through the sleeve 41. One end of the movable rod 44 is fixed to the side of the fixed plate 25 near the movable plate 4, and the other end passes through the movable plate 4. The movable rod 44 is slidably connected to the movable plate 4, and its interior abuts against the drive block 49. A spring 45 is fitted around the periphery of the sleeve 41. One end of the spring 45 is fixedly connected to the side of the fixed plate 25, and the other end is fixedly connected to the side of the movable plate 4.

[0040] The implementation principle of Example 2 is as follows: When the electric cylinder 21 is started, the piston rod of the electric cylinder 21 drives the fixed plate 25 to move towards the valve body. The fixed plate 25 drives the mounting column 47 to move, so that the mounting column 47 is inserted into the flow channel of the valve body. The moving plate 4 abuts against the side of the valve body. The fixed plate 25 continues to move, so that the fixed plate 25 pushes the moving rod 44 to move. The moving rod 44 pushes the drive block 49 to move, so that the drive block 49 drives the tension block 42 to rotate, so that the rubber block 48 on the tension block 42 abuts against the inner wall of the valve body. Thus, the workpiece is positioned and clamped from the inner wall of the valve body with an existing inner hole or inner cavity. Since the tension block 42 can rotate, it is convenient to tighten and fix valve bodies of different sizes.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A valve body expansion sleeve device, characterized in that: The workbench (1) includes two parallel slide rails (11) fixed on its top surface. A movable seat (12) for placing a valve body is slidably mounted on the two slide rails (11). A pneumatic gripper (13) is fixed on the top surface of the movable seat (12). Mounting plates (2) are fixed on both sides of the top surface of the workbench (1). An electric cylinder (21) is fixed on the side of the two mounting plates (2) that are far apart from each other. A through hole (22) is opened on the opposite side of the two mounting plates (2). The piston rod of the electric cylinder (21) passes through the through hole (22). A mounting seat (23) is fixed at the end of the piston rod of the electric cylinder (21). An expansion sleeve assembly is provided on the side of the mounting seat (23) that is far away from the electric cylinder (21).

2. The valve body expansion sleeve device according to claim 1, characterized in that: Both ends of the two slide rails (11) are slidably provided with slide seats (24), and the top of the slide seat (24) is fixed with a fixing plate (25). The end face of the piston rod of the electric cylinder (21) is fixed to the side of the fixing plate (25).

3. The valve body expansion sleeve device according to claim 2, characterized in that: The expansion sleeve assembly includes an expansion sleeve rod (26) fixed to the side of the fixing plate (25) away from the electric cylinder (21), and the outer peripheral surface of the expansion sleeve rod (26) away from the fixing rod is a tapered surface (27).

4. The valve body expansion sleeve device according to claim 1, characterized in that: A positioning block (14) is fixed to the side of the movable seat (12), and a pneumatic gripper (15) is fixed to one side of the top surface of the workbench (1). The pneumatic gripper (15) can hold the positioning block (14).

5. A valve body expansion sleeve device according to claim 3, characterized in that: Two connecting posts (3) are fixed between the two mounting plates (2). Two connecting plates (31) are sleeved on the outer periphery of the two connecting posts (3). The pneumatic gripper (13) is located between the two connecting plates (31). The two connecting plates (31) are provided with round holes (32) on their mutually distant sides. The expansion rod (26) can pass through the round holes (32).

6. A valve body expansion sleeve device according to claim 3, characterized in that: The expansion sleeve assembly includes a movable plate (4) disposed on the side of the fixed plate (25) away from the electric cylinder (21). A connector is provided between the movable plate (4) and the fixed plate (25). A mounting post (47) is fixed on the side of the movable plate (4) away from the fixed plate (25). A plurality of tensioning blocks (42) are provided on the periphery of the mounting post (47). A connecting block (43) is hinged to both ends of the bottom surface of the tensioning block (42). The bottom end of the connecting block (43) is hinged to the outer periphery of the mounting post (47). The connector can drive the tensioning block (42) to move.

7. A valve body expansion sleeve device according to claim 6, characterized in that: The connector includes a plurality of sleeves (41) fixed to the side of the movable plate (4) near the fixed plate (25). The plurality of sleeves (41) correspond to a plurality of tensioning blocks (42). A movable rod (44) is inserted inside the sleeve (41). One end of the movable rod (44) is fixed to the side of the fixed plate (25) near the movable plate (4). The other end of the movable rod (44) passes through the movable plate (4). The movable rod (44) is slidably connected to the movable plate (4). A driving block (49) is fixed to the bottom surface of the tensioning block (42) near the movable plate (4). The end of the movable rod (44) away from the fixed plate (25) abuts against the driving block (49).

8. A valve body expansion sleeve device according to claim 7, characterized in that: A spring (45) is fitted around the sleeve (41). One end of the spring (45) is fixedly connected to the side of the fixed plate (25), and the other end of the spring (45) is fixedly connected to the side of the movable plate (4).

9. A valve body expansion sleeve device according to claim 6, characterized in that: A tension spring (46) is provided between the tension block (42) and the mounting post (47). One end of the tension spring (46) is fixedly connected to the connecting block (43), and the other end of the tension spring (46) is fixedly connected to the outer circumferential surface of the mounting post (47).

10. A valve body expansion sleeve device according to claim 6, characterized in that: A rubber block (48) is fixed to the top surface of the tensioning block (42).

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