Positioning device for machining valve body of expansion valve

Abstract

The utility model discloses a kind of positioning device for expansion valve valve body processing, to solve the angle of expansion valve cannot be adjusted after the expansion valve positioning device of existing expansion valve is fixed, there is the problem of inconvenience.Its technical scheme main point is: including base, the upper end surface of base is slidably connected with two blocks of symmetrical distribution's moving plate, the upper end surface of base is provided with the drive device for moving two sides moving plate, the side of two sides moving plate close to each other is rotatably connected with clamping plate, the side wall on one side moving plate is provided with the rotating device for driving clamping plate to rotate, the upper end surface of base is fixedly connected with cylinder, the output end of cylinder is fixedly connected with placing table.The utility model is rotated by setting rotating device and drives the expansion valve between two sides clamping plate fixed, so that the different orientation of expansion valve can be rotated towards upper, it is convenient to process operation, without repeatedly disassembling expansion valve, processing is more convenient and efficient.

Description

Technical Field

[0001] This utility model relates to the field of expansion valve positioning technology, and more specifically, it relates to a positioning device for processing expansion valve bodies. Background Technology

[0002] An electronic expansion valve uses an electrical signal generated by the regulated parameter to control the voltage or current applied to the expansion valve, thereby regulating the refrigerant supply. Stepless variable capacity refrigeration systems require a wide range of refrigerant supply adjustment and fast response, which traditional throttling devices often struggle to meet, while electronic expansion valves can effectively satisfy these requirements.

[0003] In the existing technology, the valve body needs to be positioned during valve body processing, which requires the use of a positioning device. However, the existing positioning device can only fix the valve body in one direction. When the operator changes the processing position of the valve body, the valve body needs to be disassembled and the clamping angle adjusted before reassembly. This makes the entire processing process time-consuming and labor-intensive, thus affecting the progress of valve body processing.

[0004] To address the aforementioned issues, Chinese Patent Publication No. CN221621926U discloses a positioning device for machining the body of an electronic expansion valve, relating to the field of electronic expansion valve technology. The positioning device for machining the body of an electronic expansion valve includes a machining table. An adjustable positioning structure and an auxiliary fixing structure are fixedly installed on the top of the machining table, with the auxiliary fixing structure located behind the adjustable positioning structure.

[0005] The above solution, by setting up an adjustable positioning structure and an auxiliary fixing structure, utilizes the movable end of the hydraulic cylinder inside the drive box to drive two rotating sleeves to gradually approach each other via the moving stand. This allows the two rotating sleeves to assist in clamping the end of the valve body. In addition, the positioning pin can be positioned by deflecting the gear rod angle through the lifting bar. This allows the valve body to be angled after being positioned, making the processing time and effort-saving and ensuring the progress of valve body processing.

[0006] This utility model also proposes a new solution to this problem. Utility Model Content

[0007] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a positioning device for processing expansion valve bodies. By setting a rotating device, the expansion valve fixed between the two side clamps is rotated, allowing the expansion valve to rotate upwards in different positions, facilitating processing operations and eliminating the need for repeated disassembly and assembly of the expansion valve, making processing more convenient and efficient.

[0008] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a positioning device for processing an expansion valve body, comprising a base, two symmetrically distributed movable plates slidably connected to the upper end face of the base, a driving device for moving the two movable plates on the upper end face of the base, clamping plates rotatably connected to the side of each movable plate close to each other, a rotating device for rotating the clamping plate on the side wall of one movable plate, a cylinder fixedly connected to the upper end face of the base, a placement platform fixedly connected to the output end of the cylinder, the placement platform being located between the two movable plates, two symmetrically distributed limiting plates on the side walls of each clamping plate, both limiting plates being slidably connected to the side walls of the clamping plates, and a limiting component for moving the limiting plates on the side walls of the clamping plates.

[0009] The present invention is further configured such that: the driving device includes a receiving groove disposed on the upper end face of the base and a bidirectional lead screw rotatably connected to the inner wall of the receiving groove; a nut seat is fitted on both the left-hand threaded section and the right-hand threaded section of the bidirectional lead screw; a motor for driving the bidirectional lead screw to rotate is fixedly installed on the side wall of the base; and the nut seats on both sides are fixedly connected to the bottom wall of the two side moving plates respectively.

[0010] The present invention is further configured such that: the rotating device includes a gear rotatably connected to the side wall of the moving plate; the clamping plate is fixedly connected to the axis of the gear; an electric push rod is fixedly connected to the side wall of the moving plate; and a rack is fixedly connected to the output end of the electric push rod, the rack meshing with the gear.

[0011] The present invention is further configured such that: the limiting component includes two symmetrically distributed fixing plates, both fixing plates are fixedly connected to the side wall of the clamping plate, both fixing plates are provided with threaded grooves, and a threaded rod is provided in the threaded groove for threaded sliding engagement with the threaded rod. One end of the threaded rod is rotatably connected to the limiting plate, and the other end of the threaded rod is fixedly connected to a knob.

[0012] The present invention is further configured such that: a limiting block is fixedly connected to the lower end face of the nut seat, and a limiting groove is provided on the inner wall of the receiving groove for the limiting block to be inserted and moved.

[0013] The present invention is further configured such that: grooves are provided on the side walls of both sides of the clamping plates, the grooves are offset from the fixing plate, the grooves on both sides of the clamping plates are in corresponding positions, a linkage rod is provided between the two clamping plates, the two ends of the linkage rod are detachably connected to two grooves on the same straight line of the two clamping plates, a magnetic suction element is fixedly connected to the inner wall of each groove, and a magnetic suction element is fixedly connected to both ends of the linkage rod, which attracts the magnetic suction element.

[0014] The present invention is further configured such that: the linkage rod includes a fixed rod and an extension rod; a slot is provided on the side of the fixed rod near the extension rod; one end of the extension rod is inserted into the slot and slidably connected to the inner wall of the slot; a protrusion is fixedly connected to the end of the extension rod inserted into the slot; a sliding groove is provided on the inner wall of the slot for the protrusion to be inserted and moved; and the magnetic suction element is provided at the end of the fixed rod and the extension rod away from each other.

[0015] In summary, this utility model has the following beneficial effects:

[0016] This invention uses a rotating device to rotate the expansion valve fixed between the two clamping plates, allowing the expansion valve to rotate upwards from different positions, facilitating processing and eliminating the need for repeated disassembly and reassembly of the expansion valve, making processing more convenient and efficient. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 This shows the structural features when the valve body is loosened by the two side clamps;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 This shows the structural features when the valve body is clamped by the two side plates;

[0019] Figure 3 This is a schematic diagram of the rotating device in this utility model.

[0020] In the diagram: 1. Base; 2. Movable plate; 3. Clamping plate; 4. Cylinder; 5. Placement platform; 6. Limiting plate; 7. Receiving groove; 8. Two-way lead screw; 9. Nut seat; 10. Motor; 11. Gear; 12. Electric push rod; 13. Rack; 14. Fixing plate; 15. Threaded rod; 16. Knob; 17. Limiting block; 18. Limiting groove; 19. Groove; 20. Linkage rod; 21. Fixing rod; 22. Extension rod; 23. Magnetic component one; 24. Magnetic component two; 25. Slot. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0022] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "set up / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The present invention will now be described in detail with reference to the accompanying drawings.

[0025] A positioning device for machining the body of an expansion valve, such as Figures 1-3 As shown, the device includes a base 1, with two symmetrically distributed movable plates 2 slidably connected to the upper surface of the base 1. The upper surface of the base 1 is provided with a driving device for moving the two movable plates 2. The sides of the two movable plates 2 closest to each other are rotatably connected with clamping plates 3. The side wall of one movable plate 2 is provided with a rotating device for rotating the clamping plate 3. The upper surface of the base 1 is fixedly connected with a cylinder 4. The output end of the cylinder 4 is fixedly connected with a placement platform 5, which is located between the two movable plates 2. The side walls of the clamping plates 3 are provided with two symmetrically distributed limiting plates 6, which are slidably connected to the side walls of the clamping plates 3. The side walls of the clamping plates 3 are provided with limiting components for moving the limiting plates 6.

[0026] The driving device includes a receiving groove 7 set on the upper end face of the base 1 and a bidirectional lead screw 8 rotatably connected to the inner wall of the receiving groove 7. Nut seats 9 are fitted on both the left-hand threaded section and the right-hand threaded section of the bidirectional lead screw 8. A motor 10 for driving the bidirectional lead screw 8 to rotate is fixedly installed on the side wall of the base 1. The motor 10 is a servo motor. One end of the bidirectional lead screw 8 is connected to the output shaft of the servo motor 10. The nut seats 9 on both sides are fixedly connected to the bottom wall of the two side moving plates 2 respectively.

[0027] A limiting block 17 is fixedly connected to the lower end face of the nut seat 9. A limiting groove 18 is provided on the inner wall of the receiving groove 7 for the limiting block 17 to be inserted and moved. During the process of the nut seat 9 moving with the rotation of the lead screw, the limiting block 17 will be inserted into the limiting groove 18 to move, making the nut seat 9 more stable during the movement.

[0028] The rotating device includes a gear 11 that is rotatably connected to the side wall of the movable plate 2. The clamping plate 3 is fixedly connected to the shaft of the gear 11. An electric push rod 12 is fixedly connected to the side wall of the movable plate 2. A rack 13 is fixedly connected to the output end of the electric push rod 12. The rack 13 meshes with the gear 11.

[0029] The limiting assembly includes two symmetrically distributed fixing plates 14. Both fixing plates 14 are fixedly connected to the side wall of the clamping plate 3. Both fixing plates 14 are provided with threaded grooves. A threaded rod 15 is provided in the threaded groove and is threadedly slidably engaged with it. One end of the threaded rod 15 is rotatably connected to the limiting plate 6, and the other end of the threaded rod 15 is fixedly connected to a knob 16.

[0030] Grooves 19 are provided on the side walls of both sides of the clamping plates 3. The grooves 19 are offset from the fixing plate 14. The grooves 19 on both sides of the clamping plates 3 are in corresponding positions. A linkage rod 20 is provided between the two clamping plates 3. The two ends of the linkage rod 20 are detachably connected to the two grooves 19 on the same straight line of the clamping plates 3. A magnetic suction element 23 is fixedly connected to the inner wall of each groove 19. A magnetic suction element 24 that attracts the magnetic suction element 23 is fixedly connected to both ends of the linkage rod 20.

[0031] The linkage 20 includes a fixed rod 21 and an extension rod 22. The fixed rod 21 has a slot 25 on the side near the extension rod 22. One end of the extension rod 22 is inserted into the slot 25 and slidably connected to the inner wall of the slot 25. A protrusion is fixedly connected to the end of the extension rod 22 inserted into the slot 25. A groove is provided on the inner wall of the slot 25 for the protrusion to be inserted and moved. The magnetic suction element 24 is located at the end of the fixed rod 21 and the extension rod 22 away from each other. During the movement of the extension rod 22 along the slot 25, the protrusion will always be engaged in the groove to move, preventing the extension rod 22 from falling out of the slot 25 during the movement.

[0032] Working principle: When the expansion valve body needs to be positioned, the extension cylinder 4 first moves the placement platform 5 upward, and then the valve body to be positioned is placed on the placement platform 5. The valve body can then be positioned between the clamping plates 3 on both sides. Then the drive motor 10 drives the bidirectional lead screw 8 to rotate to one side, causing the nut seats 9 on both sides to move closer to each other. The nut seats 9 on both sides can then drive the moving plates 2 and clamping plates 3 on both sides to move closer to each other until the clamping plates 3 on both sides clamp the valve body in the middle. During this process, the two ends of the linkage rod 20 will be embedded in the grooves 19 of the clamping plates 3 on both sides. The magnetic suction part 1 23 and the magnetic suction part 2 are attracted together. The linkage rod 20 is telescopically set due to the fixed rod 21 and its slidable extension rod 22. The linkage rod 20 can shorten as the clamping plates 3 on both sides move closer, so that the clamping plates 3 on both sides can be clamped smoothly.

[0033] After the clamping plates 3 on both sides clamp the valve body located in the middle, the operator can hold the knob 16 to rotate the threaded rod 15. Due to the sliding engagement with the threaded groove, the threaded rod 15 can move along the threaded groove, causing the limiting plate 6 to move closer to the valve body and limit the two ends of the valve body, making the clamping of the clamping plates 3 more stable. After the limiting plate 6 also clamps the valve body, the shortening cylinder 4 drives the placement platform 5 to move down, causing the placement platform 5 to detach from the bottom wall of the valve body. Then, the extending electric push rod 12 drives the rack 13 to move upward. The movement of the rack 13 can drive the gear 11 meshing with it to rotate, and the gear 11 can drive the clamping plate 3 connected to it to rotate. The clamping plate 3 on the other side is also clamped to the valve body and connected to the linkage rod 20, which together can drive the valve body to rotate. Rotate different parts of the valve body to face upwards. After rotating to the appropriate position, the electric push rod 12 and rack 13 can be stopped at the current position. If the linkage rod 20 is blocked on the side facing upwards, the two ends of the linkage rod 20 can be temporarily removed from the grooves 19 on both sides to separate the magnetic suction part 1 23 from the magnetic suction part 24, so as to avoid blocking the valve body and affecting the processing. When it is necessary to rotate again, the linkage rod 20 can be reconnected to the clamping plates 3 on both sides. There is no need to repeatedly disassemble and assemble the valve body, making the processing of the valve body more convenient and efficient.

[0034] After processing, the placement platform 5 is lifted again by the extension cylinder 4 so that it contacts the bottom wall of the valve body. Then, the threaded rod 15 is rotated in the opposite direction by holding the knob 16, which drives the limit plate 6 away from the valve body. Then, the bidirectional lead screw 8 is driven to rotate in the opposite direction by the motor 10, which drives the nut seats 9 on both sides and the moving plate 2 away from each other, so that the clamps 3 on both sides release the valve body, and the valve body can be removed from the placement platform 5.

[0035] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A positioning device for machining an expansion valve body, comprising a base (1), characterized in that: Two symmetrically distributed movable plates (2) are slidably connected to the upper end face of the base (1). A driving device for moving the two movable plates (2) is provided on the upper end face of the base (1). A clamping plate (3) is rotatably connected to the side of the two movable plates (2) that are close to each other. A rotating device for rotating the clamping plate (3) is provided on the side wall of one movable plate (2). A cylinder (4) is fixedly connected to the upper end face of the base (1). A placement platform (5) is fixedly connected to the output end of the cylinder (4). The placement platform (5) is located between the two movable plates (2). Two symmetrically distributed limiting plates (6) are provided on the side walls of the clamping plates (3). Both limiting plates (6) are slidably connected to the side walls of the clamping plates (3). A limiting component for moving the limiting plates (6) is provided on the side walls of the clamping plates (3).

2. The positioning device for machining an expansion valve body according to claim 1, characterized in that: The driving device includes a receiving groove (7) set on the upper end face of the base (1) and a bidirectional lead screw (8) rotatably connected to the inner wall of the receiving groove (7). Nut seats (9) are fitted on both the left-hand threaded section and the right-hand threaded section of the bidirectional lead screw (8). A motor (10) for driving the bidirectional lead screw (8) to rotate is fixedly installed on the side wall of the base (1). The nut seats (9) on both sides are fixedly connected to the bottom wall of the two side moving plates (2).

3. The positioning device for machining an expansion valve body according to claim 1, characterized in that: The rotating device includes a gear (11) rotatably connected to the side wall of the moving plate (2), the clamping plate (3) is fixedly connected to the axis of the gear (11), an electric push rod (12) is fixedly connected to the side wall of the moving plate (2), and a rack (13) is fixedly connected to the output end of the electric push rod (12), and the rack (13) meshes with the gear (11).

4. The positioning device for machining an expansion valve body according to claim 1, characterized in that: The limiting component includes two symmetrically distributed fixing plates (14). Both fixing plates (14) are fixedly connected to the side wall of the clamping plate (3). Both fixing plates (14) are provided with threaded grooves. A threaded rod (15) is provided in the threaded groove and is threadedly slidably engaged with it. One end of the threaded rod (15) is rotatably connected to the limiting plate (6), and the other end of the threaded rod (15) is fixedly connected to a knob (16).

5. A positioning device for machining an expansion valve body according to claim 2, characterized in that: The lower end face of the nut seat (9) is fixedly connected to a limiting block (17), and the inner wall of the receiving groove (7) is provided with a limiting groove (18) for the limiting block (17) to be inserted and moved.

6. A positioning device for machining an expansion valve body according to claim 4, characterized in that: Grooves (19) are provided on the side walls of both sides of the clamping plates (3). The grooves (19) are offset from the fixing plate (14). The grooves (19) on both sides of the clamping plates (3) are in corresponding positions. A linkage rod (20) is provided between the two clamping plates (3). The two ends of the linkage rod (20) are detachably connected to the two grooves (19) on the same straight line of the two clamping plates (3). A magnetic suction element (23) is fixedly connected to the inner wall of each groove (19). A magnetic suction element (24) that attracts the magnetic suction element (23) is fixedly connected to both ends of the linkage rod (20).

7. A positioning device for machining an expansion valve body according to claim 6, characterized in that: The linkage rod (20) includes a fixed rod (21) and an extension rod (22). The fixed rod (21) has a slot (25) on the side near the extension rod (22). One end of the extension rod (22) is inserted into the slot (25) and slidably connected to the inner wall of the slot (25). A protrusion is fixedly connected to the end of the extension rod (22) inserted into the slot (25). A sliding groove is provided on the inner wall of the slot (25) for the protrusion to be inserted and moved. The magnetic suction element (24) is located at the end of the fixed rod (21) and the extension rod (22) away from each other.

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