An electronic expansion valve welding device

Abstract

This invention relates to an electronic expansion valve welding device, comprising a base, a flipping device, and feet. The base includes columns and a base, with one end of the column respectively positioned on the left and right sides of the base, and the other end of the column having a first circular hole. The flipping mechanism is disposed between the two columns and includes a first positioning mechanism, a second positioning mechanism, a third positioning mechanism, a rotating seat, and a power mechanism. The electronic expansion valve welding device of this invention uses a power push rod for 90° flipping, achieving automatic flipping without manual operation, improving work efficiency and reducing labor costs.

Description

Technical Field

[0001] This invention relates to the field of expansion valve welding fixture technology, specifically to an electronic expansion valve welding device. Background Technology

[0002] Electronic expansion valves, as a new type of control element, have become an important component in the intelligentization of refrigeration systems. Primarily located at the evaporator outlet, they collect superheat signals using temperature and pressure sensors at the evaporator outlet and employ feedback regulation to control the valve's opening. They are typically connected to the evaporator via copper tubing.

[0003] Previously, when welding electronic expansion valves and copper pipes, the welding could only be carried out manually, resulting in low work efficiency, high labor intensity, and poor weld precision. Furthermore, copper pipe welding is generally done vertically, where gravity allows the welding flux to fill the weld joint, making the weld more secure. Due to the characteristics of the expansion valve itself—generally, the two ends are arranged at 90°—manual operation is required to rotate the electronic expansion valve and copper pipe to achieve vertical welding while ensuring welding quality, further reducing work efficiency and increasing labor intensity. Summary of the Invention

[0004] The purpose of this invention is to provide an electronic expansion valve welding device to improve the welding quality of electronic expansion valves, increase work efficiency, and reduce labor intensity.

[0005] To achieve the above objectives, the present invention provides an electronic expansion valve welding device, including a base, a flipping device, and feet. The base includes a column and a base. One end of the column is respectively disposed on the left and right sides of the base, and the other end of the column is provided with a first circular hole. The flipping mechanism is disposed between the two columns and includes a first positioning mechanism, a second positioning mechanism, a third positioning mechanism, a rotating seat, and a power mechanism.

[0006] The first positioning mechanism includes a first vertical tube, a first horizontal tube, and a second horizontal tube. The first vertical tube has a first elongated slot that penetrates the surface of the first vertical tube. There are two first vertical tubes. The first horizontal tube is located at the upper end of the first vertical tubes and between the two first vertical tubes. The first horizontal tube has a second elongated slot that penetrates the front and rear sides and the top of the first horizontal tube. The second horizontal tube is located in front of the first horizontal tube and is located on the left and right sides of the second elongated slot. The first horizontal tube has a lever, a first pin, and a quick-release bolt. The first pin and the quick-release bolt are located on the left and right sides of the second elongated slot. One end of the lever is sleeved with the first pin, and the other end of the lever has an arc-shaped groove that is movably connected to the quick-release bolt.

[0007] The second positioning mechanism includes a third horizontal tube and a second vertical tube. The third horizontal tube is located in front of the first vertical tube and is slidably connected to the first elongated slot. The second vertical tube is located above the third horizontal tube and has a third elongated slot that penetrates both sides and the top of the second vertical tube. A door panel button is located on the second horizontal tube. One end of the door panel button is threaded to the second horizontal tube, and the other end of the door panel button is equipped with a wrench. The upper end of the second vertical tube is provided with a second pin, a second round hole, and a fourth elongated slot. The second round hole is located above the third elongated slot and penetrates both sides of the second vertical tube. The fourth elongated slot is located behind the second vertical tube and intersects with the second round hole. The second pin passes through the second round hole and is sleeved with the second round hole. One end of the second pin is provided with a limit shaft, which is located on one side of the fourth elongated slot. The two ends of the third horizontal tube are respectively provided with a first bolt and a first wing nut. The first bolt passes through the first elongated slot and the third horizontal tube in sequence, and the first wing nut is threadedly connected to the first bolt.

[0008] The third positioning mechanism includes a fourth horizontal tube and a positioning pin. The fourth horizontal tube is located behind the first vertical tube and is slidably connected to the first elongated slot. The positioning pin is located on the fourth horizontal tube. One side of the rotating seat is provided with a rotating shaft, which is inserted into and sleeved with the first round hole. The other side of the rotating seat is located on the left side of the first vertical tube. The two ends of the fourth horizontal tube are respectively provided with a second bolt and a second wing nut. The second bolt passes through the first elongated slot and the fourth horizontal tube in sequence, and the second wing nut is threadedly connected to the second bolt.

[0009] The power mechanism includes a support base, a bullseye, a power push rod, and a mounting base. One side of the support base is provided with a support shaft, and the other side of the support base is provided at the lower end of the first vertical tube and is respectively provided on the left and right sides of the first vertical tube with the rotating seat. One end of the bullseye is sleeved with the support shaft, and the other end of the bullseye is threadedly connected to one end of the power push rod. The other end of the power push rod is sleeved with the mounting base. The mounting base is provided on the base, and the foot is provided below the base.

[0010] Furthermore, multiple second horizontal tubes, second long slots, second vertical tubes, and positioning pins are provided, and are symmetrically and evenly arranged on the first horizontal tube, third horizontal tube, and fourth horizontal tube, respectively.

[0011] Based on the above technical solution, the advantages of the present invention are:

[0012] The electronic expansion valve welding device of the present invention uses a power push rod to rotate 90°, realizing automatic rotation without manual operation, improving work efficiency and reducing labor costs. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0014] Figure 1 This is a schematic diagram of the welding device for an electronic expansion valve.

[0015] Figure 2 Front view schematic diagram of the electronic expansion valve welding device

[0016] Figure 3 Right view schematic diagram of the electronic expansion valve welding device;

[0017] Figure 4 A schematic diagram of an electronic expansion valve welding device rotated 90°.

[0018] Figure 5 This is a schematic diagram of the flipping mechanism;

[0019] Figure 6 This is a schematic diagram of the first positioning mechanism.

[0020] Figure 7 A magnified view of the position B of the first positioning mechanism;

[0021] Figure 8 A magnified view of a portion of position A of the first positioning mechanism;

[0022] Figure 9 This is a schematic diagram of the second positioning mechanism.

[0023] Figure 10 A magnified view of the position C of the second positioning mechanism;

[0024] Figure 11 This is a schematic diagram of the third positioning mechanism.

[0025] Figure 12 This is a schematic diagram of the power mechanism structure;

[0026] Figure 13 This is a schematic diagram of the welding operation.

[0027] Figure 14 This is a schematic diagram of the welding operation state with the welding machine rotated 90°. Detailed Implementation

[0028] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] This invention provides an electronic expansion valve welding device, such as... Figures 1-12 As shown, a preferred embodiment of the present invention is illustrated.

[0030] It should be noted that the terms "front", "rear", "left", "right", "up" and "down" used in this invention are based on the perspective shown in the accompanying drawings. In other words, the terms "front", "rear", "left", "right", "up" and "down" used in this invention refer to "front", "rear", "left", "right", "up" and "down" from the perspective shown in the accompanying drawings.

[0031] Specifically, such as Figures 1-4 As shown, the electronic expansion valve welding device includes a base 1, a flipping device 2, and feet 3. The base 1 includes columns 4 and a base 5. One end of the column 4 is respectively set on the left and right sides of the base 5, and the other end of the column 4 is provided with a first circular hole 6. The flipping mechanism 2 is set between the two columns 4. Feet are provided under the base to ensure the stability of the welding device and improve the welding quality.

[0032] like Figure 5 As shown, the flipping mechanism 2 includes a first positioning mechanism 7, a second positioning mechanism 8, a third positioning mechanism 9, a rotating seat 10, and a power mechanism 11.

[0033] like Figures 5-8 As shown, the first positioning mechanism 7 includes a first vertical tube 12, a first horizontal tube 13, and a second horizontal tube 14. The first vertical tube 12 is provided with a first elongated slot 15, which penetrates the surface of the first vertical tube 12. There are two first vertical tubes 12. The first horizontal tube 13 is located at the upper end of the first vertical tube 12 and between the two first vertical tubes 12. The first horizontal tube 13 is provided with a second elongated slot 16, which penetrates the front and rear sides and the top of the first horizontal tube 13. The second horizontal tube 14 is located in front of the first horizontal tube 13 and is located on the left and right sides of the second elongated slot 16. The first horizontal tube 13 is provided with a lever 28, a first pin 29, and a quick-release bolt 30. The first pin 29 and the quick-release bolt 30 are located on the left and right sides of the second elongated slot 16, respectively. One end of the lever 28 is sleeved with the first pin 29.

[0034] like Figure 7 As shown, the other end of the lever 28 is provided with an arc-shaped groove 31, which is movably connected to the quick-release bolt 30.

[0035] like Figure 5 , Figure 9 , Figure 10 As shown, the second positioning mechanism 8 includes a third horizontal tube 17 and a second vertical tube 18. The third horizontal tube 17 is disposed in front of the first vertical tube 12 and is slidably connected to the first elongated slot 15. The second vertical tube 18 is disposed on the third horizontal tube 17. The second vertical tube 18 is provided with a third elongated slot 19, which penetrates the left and right sides and the top of the second vertical tube 18.

[0036] A door panel knob 32 is provided on the second horizontal tube 14, and one end of the door panel knob 32 is threadedly connected to the second horizontal tube 14. For example... Figure 8 As shown, a wrench 33 is provided at the other end of the door panel button 32.

[0037] like Figure 10 As shown, the upper end of the second vertical tube 18 is provided with a second pin 34, a second round hole 35 and a fourth elongated slot 36. The second round hole 35 is located above the third elongated slot 19 and passes through both the front and rear sides of the second vertical tube 18. The fourth elongated slot 36 is located behind the second vertical tube 18 and intersects with the second round hole 35. The second pin 34 passes through the second round hole 35 and is sleeved with the second round hole 35. One end of the second pin 34 is provided with a limiting shaft 37. The limiting shaft 37 is located on one side of the fourth elongated slot 36. The two ends of the third horizontal tube 17 are respectively provided with a first bolt 38 and a first wing nut 39. The first bolt 38 passes through the first elongated slot 15 and the third horizontal tube 17 in sequence. The first wing nut 39 is threadedly connected to the first bolt 38.

[0038] like Figure 11 As shown, the third positioning mechanism 9 includes a fourth horizontal tube 20 and a positioning pin 21. The fourth horizontal tube 20 is located behind the first vertical tube 12 and is slidably connected to the first elongated slot 15. The positioning pin 21 is located on the fourth horizontal tube 20. One side of the rotating seat 10 is provided with a rotating shaft 22, which is inserted into the first round hole 6 and sleeved with the first round hole 6. The other side of the rotating seat 10 is located on the left side of the first vertical tube 12. The two ends of the fourth horizontal tube 20 are respectively provided with a second bolt 40 and a second wing nut 41. The second bolt 40 passes through the first elongated slot 15 and the fourth horizontal tube 20 in sequence, and the second wing nut 41 is threadedly connected to the second bolt 40.

[0039] like Figure 12 As shown, the power mechanism 11 includes a support base 23, a bullseye 24, a power push rod 25, and a mounting base 26. One side of the support base 23 is provided with a support shaft 27, and the other side of the support base 23 is provided at the lower end of the first vertical tube 12 and is respectively provided on the left and right sides of the first vertical tube 12 with the rotating seat 10. One end of the bullseye 24 is sleeved with the support shaft 27, and the other end of the bullseye 24 is threadedly connected to one end of the power push rod 25. The other end of the power push rod 25 is sleeved with the mounting base 26. The mounting base 26 is provided on the base 5, and the foot 3 is provided below the base 5.

[0040] Furthermore, multiple second horizontal tubes 14, second long slots 16, second vertical tubes 18, and positioning pins 21 are provided and are symmetrically and evenly arranged on the first horizontal tube 13, the third horizontal tube 17, and the fourth horizontal tube 20, respectively. This allows for the simultaneous welding of multiple sets of electronic expansion valves and copper tubes, and enables the welding of symmetrical components, further improving work efficiency.

[0041] This invention features a first elongated slot on the first vertical tube, allowing the second and third tooling fixtures to move up and down along this slot, accommodating copper tubes of varying heights. This expands the welding device's range of applications and improves work efficiency. The inclusion of a lever and a second pin further ensures the accuracy of vertical welding of the copper tubes. The design of the second and third elongated slots and the positioning pin allows for precise positioning of the electronic expansion valve and the copper tube, enhancing welding quality and work efficiency.

[0042] To further illustrate the structure and function of the electronic expansion valve welding device of the present invention, the working process of the electronic expansion valve welding device is described below with examples:

[0043] For ease of description, in this embodiment, one end of the electronic expansion valve is referred to as end A, the other end of the electronic expansion valve is referred to as end B, and the copper pipe connected to end A and end B of the electronic expansion valve is referred to as the first copper pipe and the second copper pipe.

[0044] Place the welding device at the welding station and adjust the foot 3 according to the terrain to ensure the stability of the welding device. Place the electronic expansion valve wrapped in a damp cloth on the second horizontal tube 14 from top to bottom. The A end of the electronic expansion valve passes through the second long slot 16, and the B end of the electronic expansion valve is vertically downward. Insert one end of the first copper tube into the positioning pin 21 and connect the other end of the first copper tube to the A end. Pass one end of the second copper tube through the third long slot 19 and connect the other end of the second copper tube to the B end. Loosen the first wing nut 39 and the second wing nut 41 respectively, so that the second positioning mechanism 8 and the third positioning mechanism 9 move up and down along the first long slot 15 on the first vertical tube 12. After the distance between the first copper tube and the second copper tube and the welding port of the electronic expansion valve reaches the required distance, tighten the first wing nut 39 and the second wing nut 41.

[0045] Move the lever 28 to rotate clockwise around the first pin 29, so that the arc groove 31 contacts the quick-release bolt 30. Tighten the quick-release bolt 30 to press the lever 28. Rotate the wrench 33 to press the door panel button 32 against the electronic expansion valve. Rotate the second pin 34 to make the limiting shaft 37 pass through the fourth long slot 36. Rotate the second pin 34 again to make the limiting shaft 37 perpendicular to the fourth long slot 36. Vertically weld end B.

[0046] After a period of time, activate the power push rod 25 to rotate the first positioning mechanism 7, the second positioning mechanism 8, and the third positioning mechanism 9 90° clockwise along the first circular hole 6; vertically weld end A; after the welded position cools down, the power push rod 25 resets, causing the first positioning mechanism 7, the second positioning mechanism 8, and the third positioning mechanism 9 to rotate 90° counterclockwise along the first circular hole 6; loosen the quick-release bolt 30, and the paddle 28 rotates counterclockwise around the first pin 29 away from the third long slot 19; rotate the second pin 34 so that the limiting shaft 37 passes through the fourth long slot 36; vertically pull out the welded parts of the electronic expansion valve and the copper tube.

[0047] Multiple second horizontal tubes 14, second long slots 16, second vertical tubes 18, and positioning pins 21 are provided and are symmetrically and evenly arranged on the first horizontal tube 13, the third horizontal tube 17, and the fourth horizontal tube 20, respectively. This allows for the simultaneous welding of multiple sets of electronic expansion valves and copper tubes, and also enables the welding of symmetrical components, further improving work efficiency.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. An electronic expansion valve welding device, characterized in that: The device includes a base (1), a flipping device (2), and feet (3). The base (1) includes a column (4) and a base (5). One end of the column (4) is respectively set on the left and right sides of the base (5), and the other end of the column (4) is provided with a first round hole (6). The flipping device (2) is set between the two columns (4). The flipping device (2) includes a first positioning mechanism (7), a second positioning mechanism (8), a third positioning mechanism (9), a rotating seat (10), and a power mechanism (11). The first positioning mechanism (7) includes a first vertical tube (12), a first horizontal tube (13), and a second horizontal tube (14). The first vertical tube (12) has a first elongated slot (15) that penetrates the surface of the first vertical tube (12). There are two first vertical tubes (12). The first horizontal tube (13) is located at the upper end of the first vertical tube (12) and between the two first vertical tubes (12). The first horizontal tube (13) has a second elongated slot (16) that penetrates the front and rear surfaces and the top surface of the first horizontal tube (13). The second horizontal tube (14) is located in front of the first horizontal tube (13). The second horizontal tube (14) is located on the left and right sides of the second long slot (16). The first horizontal tube (13) is provided with a paddle (28), a first pin (29) and a quick-release bolt (30). The first pin (29) and the quick-release bolt (30) are located on the left and right sides of the second long slot (16). One end of the paddle (28) is sleeved with the first pin (29). The other end of the paddle (28) is provided with an arc groove (31). The arc groove (31) is movably connected with the quick-release bolt (30). The second positioning mechanism (8) includes a third horizontal tube (17) and a second vertical tube (18). The third horizontal tube (17) is located in front of the first vertical tube (12) and is slidably connected to the first elongated slot (15). The second vertical tube (18) is located on the third horizontal tube (17). The second vertical tube (18) is provided with a third elongated slot (19), which penetrates the left and right sides and the top of the second vertical tube (18). A door panel button (32) is provided on the second horizontal tube (14). One end of the door panel button (32) is threadedly connected to the second horizontal tube (14), and the other end of the door panel button (32) is provided with a wrench (33). The upper end of the second vertical tube (18) is provided with a second pin (34), a second round hole (35), and a fourth elongated slot (15). 36), the second round hole (35) is set above the third long slot (19) and passes through the front and rear sides of the second vertical tube (18), the fourth long slot (36) is set behind the second vertical tube (18) and intersects with the second round hole (35), the second pin (34) passes through the second round hole (35) and is sleeved with the second round hole (35), one end of the second pin (34) is provided with a limiting shaft (37), the limiting shaft (37) is set on one side of the fourth long slot (36), the two ends of the third horizontal tube (17) are respectively provided with a first bolt (38) and a first wing nut (39), the first bolt (38) passes through the first long slot (15) and the third horizontal tube (17) in sequence, and the first wing nut (39) is threadedly connected to the first bolt (38); The third positioning mechanism (9) includes a fourth horizontal tube (20) and a positioning pin (21). The fourth horizontal tube (20) is located behind the first vertical tube (12) and is slidably connected to the first long slot (15). The positioning pin (21) is located on the fourth horizontal tube (20). One side of the rotating seat (10) is provided with a rotating shaft (22). The rotating shaft (22) is inserted into the first round hole (6) and sleeved with the first round hole (6). The other side of the rotating seat (10) is located on the left side of the first vertical tube (12). The two ends of the fourth horizontal tube (20) are respectively provided with a second bolt (40) and a second wing nut (41). The second bolt (40) passes through the first long slot (15) and the fourth horizontal tube (20) in sequence. The second wing nut (41) is threadedly connected to the second bolt (40). The power mechanism (11) includes a support base (23), a bullseye (24), a power push rod (25), and a mounting base (26). One side of the support base (23) is provided with a support shaft (27), and the other side of the support base (23) is provided at the lower end of the first vertical tube (12) and is respectively provided on the left and right sides of the first vertical tube (12) with the rotating seat (10). One end of the bullseye (24) is sleeved with the support shaft (27), and the other end of the bullseye (24) is threadedly connected to one end of the power push rod (25). The other end of the power push rod (25) is sleeved with the mounting base (26). The mounting base (26) is provided on the base (5), and the foot (3) is provided below the base (5).

2. The electronic expansion valve welding device according to claim 1, characterized in that: The second horizontal tube (14), the second long slot (16), the second vertical tube (18) and the positioning pin (21) are provided in multiples, and are symmetrically and evenly arranged on the first horizontal tube (13), the third horizontal tube (17) and the fourth horizontal tube (20).

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