Tool clamp of automobile air conditioner expansion valve

Abstract

The utility model discloses a work fixture for an expansion valve of an automobile air conditioner, which belongs to the technical field of machining and comprises an equipment main body, and a positioning and clamping component and a dust removal component are mounted on the equipment main body. The positioning and clamping assembly comprises a clamping assembly and an upper pressing assembly, the clamping assembly and the upper pressing assembly are both connected with the equipment body, and the clamping assembly is connected with the upper pressing assembly. By means of the mode, before the expansion valve is placed, the dust removal assembly cleans waste on the machining position, the purpose of cleaning foreign matter on the surface of the machining position is achieved, the foreign matter on the surface of the machining position is prevented from crushing the expansion valve, then the expansion valve is placed on the equipment body, and the clamping assembly positions and clamps the side face of the expansion valve; the upper pressing assembly presses and fixes the upper end of the expansion valve, the three-face pressing function is achieved, and then the expansion valve is machined after being fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to a fixture for an automotive air-conditioning expansion valve. Background Art

[0002] The expansion valve is one of the main components and four major components of the refrigeration system. It is installed between the condenser and the evaporator, with its outlet connected to the inlet of the evaporator and the temperature sensing bulb closely attached to the end of the evaporator. It is the boundary between high pressure and low pressure in the refrigeration system. However, when machining it, the traditional fixture cannot clamp and fix the upper end of the workpiece, and cannot clean the working position before machining, and the machining sequence is numerous and complicated.

[0003] For example, Chinese Patent CN213616202U discloses a fixing fixture for an electromagnetic expansion valve, including a fixture positioning chassis, a fixed installation base, an installation groove, a positioning installation groove, a positioning secondary groove, a positioning primary groove, a flow channel, a cutting fluid outlet, and an electromagnetic expansion valve fixing component. A positioning secondary groove is arranged inside the positioning installation groove, and a positioning primary groove is arranged inside the positioning secondary groove; a flow channel is arranged inside the fixture positioning chassis, and the flow channel is connected to the cutting fluid outlet; the electromagnetic expansion valve fixing component is installed on both sides above the top of the fixture positioning chassis.

[0004] However, its technology has the following problems: it cannot fix and clamp the three sides of the expansion valve, and cannot clean the surface of the machining position before the expansion valve is placed.

[0005] Based on this, the utility model designs a fixture for an automotive air-conditioning expansion valve to solve the above problems. Summary of the Utility Model

[0006] In view of the above-mentioned drawbacks of the prior art, the utility model provides a fixture for an automotive air-conditioning expansion valve.

[0007] To achieve the above objectives, the utility model is realized through the following technical solutions:

[0008] A fixture for an automotive air-conditioning expansion valve, including an equipment main body, on which a positioning and clamping component and a dust removal component are installed;

[0009] The positioning and clamping component includes a clamping component and an upper pressing component, and both the clamping component and the upper pressing component are connected to the equipment main body.

[0010] Further, the device body includes a clamping workbench, L-shaped plates, a fixture base, and fixing blocks. There are two L-shaped plates. The left and right sides of the clamping workbench are respectively fixedly connected to the L-shaped plates. The two L-shaped plates are respectively in contact connection with the left and right sides of the fixture base. There are two fixing blocks, which are respectively fixedly installed on the left and right sides of the upper end of the fixture base. Two through holes are formed in the fixture base.

[0011] Further, the fixture base is connected to a clamping assembly, an upper pressing assembly, and a dust removal assembly.

[0012] Further, the clamping assembly includes positioning pins, pressing blocks, pull rods, shaft pins, piston rods, and fixing seats. The fixing seats are fixedly installed on the upper ends of the fixture base. A piston sleeve is fixedly connected to the bottom of the fixing seat at the position of the through hole. The piston sleeve is slidably connected to the piston rod. There are two positioning pins, which are both fixedly installed on the upper ends of the fixing seats. There are two pressing blocks and two pull rods. The lower ends of the two pressing blocks are respectively fixedly connected to the upper ends of the two pull rods. The side walls of the two pull rods are both slidably connected to the fixing seats. The lower ends of the two pull rods are rotatably connected to both ends of the shaft pin. The middle of the shaft pin is rotatably connected to the piston rod.

[0013] Further, the positioning pins, pressing blocks, pull rods, shaft pins, piston rods, and fixing seats are all provided in two groups and symmetrically installed on the left and right sides of the fixture base.

[0014] Further, the upper pressing assembly includes telescopic blocks, pressure sensors, upper pressing rods, and mounting blocks. There are two mounting blocks, which are respectively fixedly installed on the left and right sides of the fixture base. The upper pressing rods are rotatably connected to the upper ends of the fixing blocks. The pressure sensors are fixedly installed on the side walls of the mounting blocks. The telescopic blocks are slidably connected to the mounting blocks. The telescopic blocks and the sensing ends of the pressure sensors are both in contact connection with the upper pressing rods.

[0015] Further, the telescopic blocks, pressure sensors, and upper pressing rods are all provided in two groups and are respectively located on the left and right sides of the fixture base.

[0016] Further, the dust removal assembly is a water outlet pipe.

[0017] Further, there are eight water outlet pipes, which are respectively fixedly installed around the two fixing seats.

[0018] The utility model has the following technical effects:

[0019] When the present utility model is in use, before placing the expansion valve, the dust removal component cleans up the waste on the processing position, achieving the purpose of cleaning foreign objects on the surface of the processing position, preventing foreign objects on the surface of the processing position from causing indentation to the expansion valve. Then, the expansion valve is placed on the equipment main body, the clamping component positions and clamps the side surface of the expansion valve, and the upper pressing component presses and fixes the upper end of the expansion valve, realizing the function of three-sided pressing. Then, after the expansion valve is fixed, processing is carried out. Brief Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is a three-dimensional view of a fixture for an automotive air-conditioning expansion valve of the present utility model Figure 1 ;

[0022] Figure 2 is a front view of a fixture for an automotive air-conditioning expansion valve of the present utility model;

[0023] Figure 3 is a three-dimensional view of a fixture for an automotive air-conditioning expansion valve of the present utility model Figure 2 ;

[0024] Figure 4 is a three-dimensional view of a fixture for an automotive air-conditioning expansion valve of the present utility model Figure 3 ;

[0025] Figure 5 is a structural schematic diagram of the clamping component of the present utility model.

[0026] The reference numerals in the drawings respectively represent:

[0027] 1. Equipment main body; 11. Clamping workbench; 12. L-shaped plate; 13. Fixture base; 14. Fixed block; 15. Through hole; 2. Positioning and clamping component; 21. Clamping component; 211. Positioning pin; 212. Pressing block; 213. Pull rod; 214. Axle pin; 215. Piston rod; 216. Fixed seat; 22. Upper pressing component; 221. Telescopic block; 222. Pressure sensor; 223. Upper pressing rod; 224. Mounting block; 3. Dust removal component. Detailed Embodiment

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] The present utility model will be further described below with reference to the embodiments.

[0030] In the following description, "left", "right", "front", "rear", "upper", and "lower" mentioned are oriented in the perspective direction of the front view.

[0031] Embodiment 1

[0032] Please refer to the attached specification Figures 1 - 5 , a tooling fixture for an automotive air-conditioning expansion valve, comprising an equipment main body 1, on which a positioning and clamping assembly 2 and a dust removal assembly 3 are installed;

[0033] The positioning and clamping assembly 2 includes a clamping assembly 21 and an upper pressing assembly 22, and both the clamping assembly 21 and the upper pressing assembly 22 are connected to the equipment main body 1.

[0034] When the present utility model is in use, before placing the expansion valve, the dust removal assembly 3 cleans the waste on the processing position, achieving the purpose of cleaning foreign matters on the surface of the processing position and preventing the foreign matters on the surface of the processing position from causing indentation to the expansion valve. Then, the expansion valve is placed on the equipment main body 1. The clamping assembly 21 positions and clamps the side surface of the expansion valve, and the upper pressing assembly 22 presses and fixes the upper end of the expansion valve, realizing the function of three-sided pressing. Then, the expansion valve is processed after being fixed.

[0035] Embodiment 2

[0036] As Figures 1 - 5 shown, as a preferred embodiment of the present utility model, the equipment main body 1 includes a clamping workbench 11, an L-shaped plate 12, a fixture base 13 and a fixing block 14. There are two L-shaped plates 12. The left and right sides of the clamping workbench 11 are respectively fixedly connected to the L-shaped plates 12. The two L-shaped plates 12 are respectively in contact connection with the left and right sides of the fixture base 13. There are two fixing blocks 14 and they are respectively fixedly installed on the left and right sides of the upper end of the fixture base 13. Two through holes 15 are formed on the fixture base 13.

[0037] The fixture base 13 is connected to the clamping assembly 21, the upper pressing assembly 22 and the dust removal assembly 3.

[0038] The clamping assembly 21 includes a positioning pin 211, a pressing block 212, a pull rod 213, a shaft pin 214, a piston rod 215 and a fixed seat 216; the fixed seat 216 is fixedly installed at the upper end of the fixture base 13, and a piston sleeve is fixedly connected to the bottom of the fixed seat 216 at the position of the through hole 15, and the piston sleeve is slidably connected to the piston rod 215. Two positioning pins 211 are provided and are both fixedly installed at the upper end of the fixed seat 216. Two pressing blocks 212 and two pull rods 213 are provided. The lower ends of the two pressing blocks 212 are respectively fixedly connected to the upper ends of the two pull rods 213. The side walls of the two pull rods 213 are both slidably connected to the fixed seat 216. The lower ends of the two pull rods 213 are rotatably connected to both ends of the shaft pin 214, and the middle of the shaft pin 214 is rotatably connected to the piston rod 215.

[0039] Two groups of the positioning pins 211, the pressing blocks 212, the pull rods 213, the shaft pins 214, the piston rods 215 and the fixed seats 216 are provided and are symmetrically installed on the left and right sides of the fixture base 13.

[0040] The upper pressing assembly 22 includes a telescopic block 221, a pressure sensor 222, an upper pressing rod 223 and a mounting block 224; two mounting blocks 224 are provided and are respectively fixedly installed on the left and right sides of the fixture base 13. The upper pressing rod 223 is rotatably connected to the upper end of the fixed block 14. The pressure sensor 222 is fixedly installed on the side wall of the mounting block 224. The telescopic block 221 is slidably connected to the mounting block 224. The sensing ends of the telescopic block 221 and the pressure sensor 222 are both in contact connection with the upper pressing rod 223. The pressure sensor 222 detects the position of the upper pressing rod 223 according to the magnitude of the pressure, and the telescopic block 221 plays a role in buffering the rebound of the upper pressing rod 223.

[0041] Two groups of the telescopic blocks 221, the pressure sensors 222 and the upper pressing rods 223 are provided and are respectively located on the left and right sides of the fixture base 13.

[0042] When the present utility model is in use, the expansion valve is placed on the positioning pin 211, and the positioning pin 211 positions it. The piston rod 215 starts to move downward. The movement of the piston rod 215 drives the two pull rods 213 to move towards each other. The pull rods 213 drive the two pressing blocks 212 to move towards each other to tightly press the side surface of the expansion valve. Then, the upper pressing rod 223 is rotated to the upper part of the expansion valve to tightly press the upper part of the expansion valve, realizing the function of clamping the expansion valve on three sides; the double stations can clamp and work simultaneously, effectively improving the processing efficiency of the expansion valve.

[0043] Embodiment 3

[0044] As Figures 1 - 5 shown, as a preferred embodiment of the present utility model, the dust removal assembly 3 is a water outlet pipe.

[0045] There are eight water outlet pipes, which are respectively and fixedly installed around the two fixing seats 216.

[0046] When the present utility model is in use, four spraying devices are adopted. Before the product is placed, through the water circulation instruction, the water outlet pipes spray water on the positioning surface of the processing position to achieve the purpose of cleaning surface foreign matters, and prevent the expansion valve from being damaged by surface foreign matters during processing.

[0047] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A fixture for an automobile air-conditioning expansion valve, comprising a device body (1), characterized in that: The equipment body (1) is provided with a positioning and clamping assembly (2) and a dust removal assembly (3); The positioning clamping assembly (2) comprises a clamping assembly (21) and an upper pressing assembly (22); the clamping assembly (21) and the upper pressing assembly (22) are both connected to the device body (1).

2. The fixture for the expansion valve of an automobile air conditioner according to claim 1, characterized in that: The device body (1) comprises a clamping workbench (11), an L-shaped plate (12), a clamp base (13) and a fixed block (14); two L-shaped plates (12) are provided, the left and right sides of the clamping workbench (11) are respectively fixedly connected to the L-shaped plates (12); the two L-shaped plates (12) are respectively in contact with the left and right sides of the clamp base (13); two fixed blocks (14) are provided and are respectively fixedly installed on the left and right sides of the upper end of the clamp base (13); and two through holes (15) are provided on the clamp base (13).

3. The fixture for the expansion valve of the automobile air conditioner according to claim 2, characterized in that: The clamp base (13) is connected to the clamping assembly (21), the upper pressing assembly (22), and the dust removal assembly (3).

4. The fixture for the expansion valve of the automobile air conditioner according to claim 3, characterized in that: The clamping assembly (21) comprises a positioning pin (211), a clamping block (212), a pull rod (213), an axle pin (214), a piston rod (215) and a fixing seat (216); the fixing seat (216) is fixedly mounted on the upper end of the clamp base (13); a piston sleeve is fixedly connected to the bottom of the fixing seat (216) at the position of the through hole (15); the piston sleeve is slidably connected to the piston rod (215); the positioning pin (211) is provided with two and Both are fixedly installed on the upper end of the fixed seat (216), and two clamping blocks (212) and two pull rods (213) are provided, and the lower ends of the two clamping blocks (212) are respectively fixedly connected to the upper ends of the two pull rods (213), the side walls of the two pull rods (213) are slidably connected to the fixed seat (216), the lower ends of the two pull rods (213) are rotatably connected to the two ends of the shaft pin (214), and the middle part of the shaft pin (214) is rotatably connected to the piston rod (215).

5. The fixture for the expansion valve of the automobile air conditioner according to claim 4, characterized in that: The positioning pin (211), the pressing block (212), the pull rod (213), the shaft pin (214), the piston rod (215), and the fixing seat (216) are each provided in two groups and are symmetrically installed on the left and right sides of the clamp base (13).

6. The fixture for the expansion valve of the automobile air conditioner according to claim 5, characterized in that: The upper pressure assembly (22) comprises a telescopic block (221), a pressure sensor (222), an upper pressure rod (223) and a mounting block (224); the mounting block (224) is provided with two and is respectively fixedly mounted on the left and right sides of the clamp base (13); the upper pressure rod (223) is rotatably connected to the upper end of the fixed block (14); the pressure sensor (222) is fixedly mounted on the side wall of the mounting block (224); the telescopic block (221) is slidably connected to the mounting block (224); the sensing ends of the telescopic block (221) and the pressure sensor (222) are both in contact with the upper pressure rod (223).

7. The fixture for the expansion valve of the automobile air conditioner according to claim 6, characterized in that: The telescopic block (221), the pressure sensor (222), and the upper pressure rod (223) are each provided with two and are respectively located on the left and right sides of the clamp base (13).

8. The fixture for the expansion valve of the automobile air conditioner according to claim 7, characterized in that: The dust removal component (3) is a water outlet pipe.

9. The fixture for the expansion valve of the automobile air conditioner according to claim 8, characterized in that: The water outlet pipes are provided in eight numbers and are respectively fixedly installed around the two fixing seats (216).

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