Valve seat pressing machine

Abstract

The utility model discloses a valve seat press-fitting machine which comprises a working table, the top and the bottom of the working table are both fixedly connected with installation frames, a pressure cylinder and a servo electric cylinder are installed on the two installation frames respectively, an upper press-fitting head is installed at the telescopic end of the pressure cylinder, and a lower press-fitting head is installed at the telescopic end of the servo electric cylinder. A plurality of first fixing blocks used for fixing a valve seat are arranged on the workbench, a plurality of second fixing blocks used for fixing a valve body are further arranged on the workbench, the number of the second fixing blocks is the same as that of the first fixing blocks, and moving assemblies used for controlling the first fixing blocks and the second fixing blocks to move are arranged on the workbench. According to the valve seat press-fitting machine, in the press-fitting operation, a valve body and a valve seat can be rapidly positioned and always kept coaxial in the press-fitting process, repeated manual fine adjustment is not needed, and the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve seat assembly, in particular to a valve seat press-fitting machine. Background Art

[0002] A valve is a mechanical device used to control the flow of fluid. Its internal structure can vary depending on the application, type and manufacturer. It is mainly composed of components such as the valve body, valve cover, valve disc, valve seat and valve stem. When combining these components, a press machine is required to press the valve seat, retaining ring, etc. onto the valve body.

[0003] After searching, the ABS valve seat press machine of CN212683051U includes a processing table, an ABS valve seat body is placed on the top of the processing table, an L-shaped mounting rod is welded to the top outer wall of the processing table, and a pressing mechanism is provided at the bottom of the L-shaped mounting rod, the pressing mechanism includes a hydraulic cylinder welded to the bottom outer wall of the L-shaped mounting rod, and a connecting block is welded to the output end of the hydraulic cylinder, and a pressing head is welded to the bottom outer wall of the connecting block, and clamping mechanisms are provided on both sides of the connecting block, and the two clamping mechanisms include connecting rods hinged on the connecting block, and the end of the connecting rod away from the connecting block is hinged with a vertical rod. In this scheme, when the connecting block moves downward, the two connecting rods rotate, and the rotation of the two connecting rods drives the pulleys at the bottom of the two vertical rods to roll in the slide rail, and the two pressing blocks approach each other to clamp and fix the surface of the ABS valve seat body, so that the clamping effect is stable, and there is no need to manually adjust the position of the valve seat. However, the above technical scheme still has the following shortcomings when it is actually used:

[0004] This prior art can move two pressing blocks to achieve the fixing operation of the valve seat. However, in the process of pressing the retaining ring into the valve seat or pressing the valve seat into the valve body, the valve seat, the valve body and the pressing head are required to be on the same axis, and the prior art only achieves the fixing of the two sides of the valve seat. The position of the valve seat still needs to be precisely adjusted by the staff, which increases the cumbersomeness of the operation and reduces the efficiency of assembly. Secondly, since the contact area between the pressing block and the valve seat is small and the force is only located on both sides of the valve seat, during the assembly process, the vibration of the machine may cause the valve seat to shift, thereby affecting the quality of the processing.

[0005] Therefore, it is necessary to design a valve seat press to solve the above problems. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes a valve seat press machine.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A valve seat press machine comprises a workbench, the top and bottom of the workbench are fixedly connected to mounting frames, a booster cylinder and a servo electric cylinder are respectively mounted on the two mounting frames, an upper pressing head is mounted on the telescopic end of the booster cylinder, and a lower pressing head is mounted on the telescopic end of the servo electric cylinder, a plurality of fixed blocks 1 for fixing the valve seat are provided on the workbench, a plurality of fixed blocks 2 for fixing the valve body are also provided on the workbench, and the number of fixed blocks 2 is the same as that of fixed blocks 1, and a moving component for controlling the movement of fixed blocks 1 and 2 is provided on the workbench.

[0009] As a preferred technical solution of the utility model, the moving component includes a cavity arranged in the workbench, a plurality of connecting parts are arranged in the cavity, the fixed block one and the fixed block two correspond to the connecting parts, the connecting part includes a sliding opening opened on the workbench, the sliding opening is communicated with the cavity, a sliding rod is fixed inside the sliding opening, the fixed block one and the fixed block two are slidably mounted on the sliding rod, springs are fixed on the side walls opposite to the fixed block one and the fixed block two, the two springs are respectively fixed to the two inner sides of the sliding opening, and the moving component also includes a driving part, which is used to drive the movement of the fixed block one and the fixed block two.

[0010] As a preferred technical solution of the utility model, the driving member includes a guide rod fixedly connected in the cavity, a truncated cone-shaped extrusion block is slidably sleeved on the guide rod, an extrusion ring is slidably connected in the cavity, an inclined surface is provided on the inner side of the extrusion ring, airbags 1 are fixed to the bottom of the extrusion block and the extrusion ring, and the airbags 1 are fixed to the inner bottom surface of the cavity, a control cavity is provided inside the workbench, a sliding plug is slidably connected in the control cavity, an electric telescopic rod is installed on the workbench, the telescopic end of the electric telescopic rod extends to the inside of the cavity, and the telescopic end of the electric telescopic rod is fixed to the upper surface of the sliding plug, a control tube is connected in the control cavity, and the control tube is respectively connected to the two airbags 1.

[0011] As a preferred technical solution of the utility model, a lubrication assembly is also provided on the workbench, and the lubrication assembly includes a plurality of grooves respectively arranged on the opposite side walls of the fixed block one and the fixed block two, and balls are arranged inside the grooves. An airbag two is fixed to the inner bottom surface of the control cavity, and lubricating liquid is arranged inside the airbag two. A liquid inlet pipe is connected to the airbag two, and all the grooves are connected to the liquid inlet pipe.

[0012] As a preferred technical solution of the utility model, the top ends of the fixing block 1 and the fixing block 2 are both provided with inclined surfaces, and the bottom ends of the fixing block 1 and the fixing block 2 are both provided with arc surfaces.

[0013] As a preferred technical solution of the utility model, all the sliding openings are arranged at equal intervals in the circumferential direction.

[0014] The utility model has the following beneficial effects:

[0015] 1. Improve work efficiency: By setting the upper pressing head and the lower pressing head, the upper pressing head and the lower pressing head can work synchronously and apply pressure to the valve body and the valve seat at the same time, thereby speeding up the assembly speed of the valve body and the valve seat and improving production efficiency;

[0016] 2. Ensure assembly quality: Fixed block 1 and fixed block 2 can make the valve body and valve seat coaxial, and the force applied by the device to the valve body and valve seat can be evenly distributed, which ensures the correct positioning and fixation of the valve body and valve seat, without the need for manual fine adjustment multiple times, ensuring the quality and consistency of assembly;

[0017] 3. Flexibility and practicality: The equipment uses replaceable or maintainable upper and lower pressure heads, and can adapt to valve bodies and valve seats of different diameters, which increases the flexibility and practicality of the equipment, making it suitable for a variety of production needs and saving production costs;

[0018] 4. Optimization of the lubrication system: By setting up the lubrication assembly, the friction between the device and the valve body and valve seat is reduced, which reduces the pressure load of the device and improves the assembly accuracy and stability. For the valve body and valve seat of the same size in the same batch, the staff does not need to start the electric telescopic rod during each pressure installation process, which simplifies the operation steps and improves the overall operation efficiency, which is particularly suitable for mass production operations;

[0019] 5. Environmental protection concept: By setting up a booster cylinder and a servo electric cylinder, the traditional hydraulic press-fitting process is replaced, which can save energy and reduce the impact on the environment. It meets the requirements of modern industry for energy conservation and environmental protection, and does not require additional lubrication and maintenance work such as hydraulic oil, thereby reducing the operating cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a valve seat press machine proposed by the utility model;

[0021] Figure 2 for Figure 1 A partial structural enlargement of the

[0022] Figure 3 for Figure 2 A magnified view of the structure at A;

[0023] Figure 4 It is a schematic diagram of the structure in the control cavity;

[0024] Figure 5 It is a schematic diagram of the structure of fixed block one and fixed block two.

[0025] In the figure: 1 workbench, 2 mounting frame, 3 booster cylinder, 4 upper pressing head, 5 lower pressing head, 6 fixed block 1, 7 fixed block 2, 8 cavity, 9 sliding opening, 10 sliding rod, 11 spring, 12 extrusion block, 13 extrusion ring, 14 guide rod, 15 airbag 1, 16 control cavity, 17 electric telescopic rod, 18 sliding plug, 19 control tube, 20 slot, 21 ball, 22 airbag 2, 23 liquid inlet pipe, 24 servo electric cylinder. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Embodiment 1

[0028] Reference Figure 1-5 A valve seat press machine includes a workbench 1, the top and bottom of the workbench 1 are fixedly connected to a mounting frame 2, a booster cylinder 3 and a servo electric cylinder 24 are respectively mounted on the two mounting frames 2, an upper press head 4 is mounted on the telescopic end of the booster cylinder 3, and a lower press head 5 is mounted on the telescopic end of the servo electric cylinder 24. The upper press head 4 and the lower press head 5 are both fixed to the device by bolts and can be replaced or maintained to ensure the practicality of the device. A plurality of openings are opened on the workbench 1, and the openings are used for the press rods on the lower press head 5 to pass through. When working, the upper press head 4 can squeeze the valve body downward, and the lower press head 5 can press upward Push the valve seat. Such synchronous operation can improve the assembly efficiency of the valve body, the valve seat and the retaining ring. The workbench 1 is provided with a plurality of fixed blocks 6 for fixing the valve seat. The workbench 1 is also provided with a plurality of fixed blocks 2 7 for fixing the valve body. The upper pressing head 4 and the lower pressing head 5 are coaxial. The fixed blocks 1 6 and the fixed blocks 2 7 are arranged at equal intervals in the circumferential direction. The center of the circle around the fixed block 1 6 and the center of the circle around the fixed block 2 7 are coaxial with the upper pressing head 4. The fixed block 2 7 surrounds the fixed block 1 6, and the number of the fixed blocks 2 7 and the fixed block 1 6 is the same. The workbench 1 is provided with a moving component for controlling the movement of the fixed blocks 1 6 and the fixed blocks 2 7;

[0029] The moving assembly includes a cavity 8 arranged in the workbench 1, and a plurality of connecting pieces are arranged in the cavity 8. The fixed block 1 6 and the fixed block 2 7 correspond to the connecting pieces. The connecting pieces include a sliding port 9 opened on the workbench 1. All the sliding ports 9 are arranged at equal intervals in the circumferential direction. Each sliding port 9 has a fixed block 1 6 and a fixed block 2 7. The axially equidistant arrangement increases the contact area between the device and the valve body and the valve seat, and there is a force in the axial direction to ensure the uniformity of the force. The sliding port 9 is connected to the cavity 8, and a sliding port 9 is fixed inside. Rod 10, fixed block 16 and fixed block 27 are all slidably sleeved on the slide rod 10, and the slide rod 10 guides the movement of fixed block 16 and fixed block 27. The side walls of fixed block 16 and fixed block 27 are both in contact with the inner side of the sliding opening 9 to ensure the stability of the movement of fixed block 16 and fixed block 27. Springs 11 are fixed on the side walls opposite to the fixed block 16 and fixed block 27. The two springs 11 are respectively fixed to the two inner sides of the sliding opening 9. The moving assembly also includes a driving member, which is used to drive the movement of fixed block 16 and fixed block 27;

[0030] The driving member includes a guide rod 14 fixedly connected to the cavity 8, a truncated cone-shaped extrusion block 12 is slidably sleeved on the guide rod 14, and when the extrusion block 12 moves upward, it can push the fixed block 6 to move in the horizontal direction. An extrusion ring 13 is slidably connected to the cavity 8, and an inclined surface is provided on the inner side of the extrusion ring 13. Under the action of the inclined surface, the movement of the extrusion ring 13 can drive the fixed block 7 to move in the horizontal direction. The bottom of the extrusion block 12 and the extrusion ring 13 are fixed with an air bag 15, and the air bag 15 is fixed to the inner bottom surface of the cavity 8. A control cavity 16 is provided inside the workbench 1, and a sliding plug is slidably connected in the control cavity 16. 18. An electric telescopic rod 17 is installed on the workbench 1. The telescopic end of the electric telescopic rod 17 extends to the inside of the cavity 8, and the telescopic end of the electric telescopic rod 17 is fixed to the upper surface of the slide plug 18. A control tube 19 is connected to the control cavity 16. The control tube 19 is respectively connected to the two air bags 15. Under the action of the air bags 15, the extrusion block 12 and the extrusion ring 13 can move in the vertical direction, so that each fixed block 16 moves the same distance. Similarly, the moving distance of each fixed block 2 7 is also the same, ensuring that the force of each fixed block 1 6 and the fixed block 2 7 on the valve seat and the valve body is the same.

[0031] Optionally, the top ends of the fixed block 1 6 and the fixed block 2 7 are both provided with an inclined surface, which can increase the contact range between the valve body or valve seat and the device, and realize rapid positioning of the valve body and the valve seat. The bottom ends of the fixed block 1 6 and the fixed block 2 7 are both provided with an arc surface, which can reduce the contact area between the fixed block 1 6 and the extrusion block 12, and between the fixed block 2 7 and the extrusion ring 13, thereby reducing friction and extending the service life of the device.

[0032] Working principle: When performing the press-fitting operation, the staff first puts the valve seat sleeve on all the fixed blocks 6, then places the valve body on the valve seat, and starts the electric telescopic rod 17. The telescopic end of the electric telescopic rod 17 moves downward to press down the slide plug 18, so that the air at the bottom of the slide plug 18 enters the two air bags 15 through the control tube 19. The air bag 15 at the bottom of the extrusion block 12 expands and pushes up the extrusion block 12. Under the action of the inclined surface of the extrusion block 12, all the fixed blocks 6 will move away from the center of the extrusion block 12, and the moving distance is The same, in this way, the fixing block 16 can be against the inner side of the valve seat to fix the valve seat, and the force applied by the fixing block 16 to the valve seat is the same, ensuring the stability of the device to fix the valve seat. At the same time, the air bag 15 located at the bottom of the extrusion ring 13 will also expand and push up the extrusion ring 13. Under the action of the inclined surface on the extrusion ring 13, the fixing block 27 will move in the direction close to the valve body, and the moving distance is the same. In this way, the fixing block 27 can fix the outer side of the valve body. When the fixing block 16 and the fixing block 27 move to the limit position, the electric telescopic rod 17 The telescopic end stops moving, and the booster cylinder 3 and the servo electric cylinder 24 are started at the same time, so that the upper pressure head 4 and the lower pressure head 5 can move toward each other, the upper pressure head 4 squeezes the valve body downward, and the lower pressure head 5 can push the valve seat, which can speed up the assembly of the valve body and the valve seat and improve work efficiency. After the assembly is completed, the telescopic end of the electric telescopic rod 17 moves upward so that the air in the airbag 15 is sucked into the control chamber 16, thereby driving the extrusion block 12 and the extrusion ring 13 to move down and reset. Under the action of the spring 11, the fixed block 16 and the fixed block 27 can be reset, thereby loosening the valve body. In this scheme, the fixing block 1 6 and the fixing block 2 7 can always keep the valve body, the valve seat and the upper pressing head 4 coaxial during the pressing process, without the need for manual adjustment by the staff, thereby ensuring the quality of the pressing. Secondly, the forces applied by the fixing block 1 6 and the fixing block 2 7 are the same and evenly distributed, which can ensure the stability of the parts fixation and thus ensure the precision of the processing. It is worth mentioning that the adjustable positions of the fixing block 1 6 and the fixing block 2 7 enable the device to adapt to valve bodies and valve seats of different diameters, which improves the practicability and flexibility of the device and saves production costs.

[0033] Embodiment 2

[0034] Embodiment 2 includes the contents of Embodiment 1, and the technical features disclosed in Embodiment 1 are also applicable to this embodiment. The technical features disclosed in Embodiment 1 will not be described repeatedly. The implementation method of the valve seat press will be further described in detail below in conjunction with the accompanying drawings.

[0035] Reference Figure 3 and Figure 4A lubrication assembly is also provided on the workbench 1, and the lubrication assembly includes a plurality of slots 20 respectively arranged on the opposite side walls of the fixed block 1 6 and the fixed block 2 7, and a ball 21 is provided inside the slot 20. The shape of the slot 20 is adapted to that of the ball 21, and the center of the ball 21 is located inside the slot 20 to prevent the ball 21 from separating from the slot 20, thereby ensuring the stability of the overall structure of the device. An airbag 2 22 is fixed to the inner bottom surface of the control chamber 16, and a lubricating liquid is provided inside the airbag 22. A liquid inlet pipe 23 is connected to the airbag 22, and all the slots 20 are connected to the liquid inlet pipe 23.

[0036] Working principle: Same as the first embodiment, the telescopic end of the electric telescopic rod 17 moves downward to drive the movement of the fixed block 1 6 and the fixed block 2 7, thereby fixing and guiding the valve body and the valve seat. The telescopic end of the electric telescopic rod 17 drives the sliding plug 18 to move downward while squeezing the airbag 2 22, so that the lubricating fluid in the airbag 22 enters the slot 20 and the gap between the slot 20 and the ball 21 through the liquid inlet pipe 23. When the upper pressing head 4 and the lower pressing head 5 move toward each other and squeeze the valve body and the valve seat respectively, the movement of the valve body and the valve seat will drive the ball 21 to rotate. The setting of the ball 21 reduces the contact area between the parts and the device, and under the action of the lubricating fluid, the lubricating fluid in the airbag 22 enters the slot 20 and the gap between the slot 20 and the ball 21. , the friction between the device and the valve body and the valve seat is further reduced, thereby reducing the load of the device pressing the valve body and the valve seat, improving the precision of assembly, and because the friction between the fixed block 1 6, the fixed block 2 7 and the assembled parts is small at this time, the staff does not need to start the electric telescopic rod 17 to move the fixed block 1 6 and the fixed block 2 7, but can directly move the parts up and take them out. Similarly, when loading again, there is no need to adjust the position of the fixed block 1 6 and the fixed block 2 7, and the parts to be assembled can be directly placed. In this way, when assembling the same batch of parts with the same size, the operation steps are reduced, which improves the overall operation efficiency for mass production operations.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A valve seat press machine, comprising a workbench (1), characterized in that: The top and bottom of the workbench (1) are fixedly connected to mounting frames (2), and a booster cylinder (3) and a servo electric cylinder (24) are respectively mounted on the two mounting frames (2). An upper pressing head (4) is mounted on the telescopic end of the booster cylinder (3), and a lower pressing head (5) is mounted on the telescopic end of the servo electric cylinder (24). The workbench (1) is provided with a plurality of fixed blocks (6) for fixing the valve seat, and the workbench (1) is also provided with a plurality of fixed blocks (7) for fixing the valve body, and the number of fixed blocks (7) is the same as that of fixed blocks (6). The workbench (1) is provided with a moving component for controlling the movement of fixed blocks (6) and fixed blocks (7).

2. A valve seat press machine according to claim 1, characterized in that: The moving assembly comprises a cavity (8) arranged in the workbench (1), wherein a plurality of connecting parts are arranged in the cavity (8), wherein the fixed block 1 (6) and the fixed block 2 (7) correspond to the connecting parts, wherein the connecting parts comprise a sliding opening (9) opened on the workbench (1), wherein the sliding opening (9) is communicated with the cavity (8), wherein a sliding rod (10) is fixed inside the sliding opening (9), wherein the fixed block 1 (6) and the fixed block 2 (7) are slidably sleeved on the sliding rod (10), wherein springs (11) are fixed on the side walls opposite to the fixed block 1 (6) and the fixed block 2 (7), wherein the two springs (11) are respectively fixed to the two inner sides of the sliding opening (9), and wherein the moving assembly further comprises a driving part, wherein the driving part is used to drive the movement of the fixed block 1 (6) and the fixed block 2 (7).

3. A valve seat press machine according to claim 2, characterized in that: The driving member comprises a guide rod (14) fixedly connected in the cavity (8), a truncated cone-shaped extrusion block (12) is slidably sleeved on the guide rod (14), an extrusion ring (13) is slidably connected in the cavity (8), an inner side of the extrusion ring (13) is provided with an inclined surface, the bottoms of the extrusion block (12) and the extrusion ring (13) are both fixed with air bags (15), the air bags (15) are fixed to the inner bottom surface of the cavity (8), and the inner surface of the workbench (1) is provided with an air bag (15). A control chamber (16) is provided in the part, a sliding plug (18) is slidably connected in the control chamber (16), an electric telescopic rod (17) is installed on the workbench (1), the telescopic end of the electric telescopic rod (17) extends into the interior of the cavity (8), and the telescopic end of the electric telescopic rod (17) is fixed to the upper surface of the sliding plug (18), a control tube (19) is connected in the control chamber (16), and the control tube (19) is respectively connected to the two airbags (15).

4. A valve seat press machine according to claim 3, characterized in that: The workbench (1) is also provided with a lubrication assembly, which includes a plurality of slots (20) respectively arranged on the opposite side walls of the fixed block 1 (6) and the fixed block 2 (7), wherein a ball (21) is arranged inside the slot (20), an airbag 2 (22) is fixed on the inner bottom surface of the control chamber (16), wherein lubricating liquid is arranged inside the airbag 2 (22), and a liquid inlet pipe (23) is connected to the airbag 2 (22), and all the slots (20) are connected to the liquid inlet pipe (23).

5. The valve seat press machine according to claim 1, characterized in that: The top ends of the fixing block 1 (6) and the fixing block 2 (7) are both provided with inclined surfaces, and the bottom ends of the fixing block 1 (6) and the fixing block 2 (7) are both provided with arc surfaces.

6. The valve seat press machine according to claim 2, characterized in that: All the sliding openings (9) are arranged at equal intervals in the circumferential direction.

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