Welding tool for pressure switch of air source heat pump

Abstract

The utility model discloses a welding tool for a pressure switch of an air source heat pump, which relates to the technical field of air source heat pump welding and comprises a base and positioning pieces arranged at two ends of the top of the base, a guide rod is fixedly mounted at the top of the base, and a limiting piece is fixedly mounted at the top end of the guide rod. A threaded screw rod is rotationally arranged between the limiting piece and the base, the guide rod is slidably sleeved with a sliding plate, and a threaded hole matched with the threaded screw rod is formed in the sliding plate; by rotating the handle, the handle can drive the threaded screw rod to rotate, and in the process, the sliding plate moves downwards along the arrangement direction of the guide rod until the clamping groove is sleeved on the pressure switch main body, so that the pressure switch main body can be positioned, and the stability of the pressure switch main body on a copper pipe is ensured; and the problem of shaking when the pressure switch main body and the copper pipe are welded is avoided, so that the welding quality can be improved.

Description

Technical Field

[0001] This utility model relates to the field of air source heat pump welding technology, specifically to a welding fixture for an air source heat pump pressure switch. Background Technology

[0002] In an air source heat pump system, copper pipes are like blood vessels in the human body, through which refrigerant is transported. The quality of the welding of the copper pipes and their accessories affects the stability of the unit's operation. Pressure switches are usually welded to the hole in the copper pipe. Therefore, welding fixtures for air source heat pump pressure switches are typically used during processing.

[0003] However, the existing welding methods have many shortcomings: Specifically, on the one hand, some workers place the pressure switch roughly, resulting in an skewed angle, which makes it easy for the welding to be loose or for there to be a false weld or a missing weld. This can lead to refrigerant leakage from the weld point during use, reducing the system pressure. In addition, inaccurate welding position can also cause misalignment or gaps at the connection between the pressure switch and the copper pipe, making it impossible to accurately detect changes in system pressure.

[0004] To address this issue, we designed a welding fixture for an air source heat pump pressure switch. Utility Model Content

[0005] The purpose of this invention is to provide a welding fixture for an air source heat pump pressure switch to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a welding fixture for an air source heat pump pressure switch, including a base and positioning components at both ends of the top of the base. A guide rod is fixedly installed on the top of the base, and a limiting component is fixedly installed on the top of the guide rod. A threaded screw is rotatably connected between the limiting component and the base. A sliding plate is slidably sleeved on the guide rod. A threaded hole adapted to the threaded screw is opened in the sliding plate. The sliding plate is threaded onto the threaded screw through the threaded hole. A handle is rotatably installed on the top of the limiting component. The top of the threaded screw rotatably passes through the limiting component and is connected to the handle. Two locking grooves are opened at the bottom of the sliding plate. A copper tube is locked onto the positioning component. Two pressure switch bodies are placed on the top of the copper tube. The tops of the pressure switch bodies are slidably inserted into the locking grooves.

[0007] Furthermore, there are two guide rods, and the two guide rods are symmetrically fixedly installed between the limiting member and the base.

[0008] Furthermore, an airbag ring is fixedly installed in the slot, an air pump is fixedly installed on the top of the slide plate, a three-way pipe is fixedly connected to the air outlet of the air pump, and the other two ends of the three-way pipe pass through the slide plate and are connected to the airbag ring.

[0009] Furthermore, the positioning component includes a column, which is fixedly installed vertically on the top of the base. A fixed block is fixedly installed at the top of the column, and two limiting rods are provided on the fixed block. An installation component is provided at the top of the limiting rod, and a spring is provided at the bottom of the installation component. A movable block is provided at the other end of the spring. A bolt is threaded into the top of the installation component, and the end of the bolt rotates through the installation component and abuts against the top of the movable block. Positioning grooves are provided on the opposite side of the fixed block and the movable block, and the copper tube is clamped in the two positioning grooves.

[0010] Furthermore, each of the mounting components has two bottom springs, and the two springs are symmetrically arranged at the bottom of the mounting component, with the springs movably sleeved on the limiting rod.

[0011] Furthermore, an elastic pad is provided on each of the two positioning grooves on opposite sides, and the elastic pad is made of rubber.

[0012] Furthermore, a cylinder is provided on the top of the base, and a support is provided on the driving end of the cylinder. A groove is provided on the top of the support, and the groove abuts against the outer surface of the copper tube.

[0013] Furthermore, the number of cylinders is two, and the two cylinders are symmetrically fixedly installed on the top of the base, and the number of support members corresponds to the number of cylinders.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: by rotating the handle, the handle can drive the threaded screw to rotate. During this process, the slide will move downward along the direction set by the guide rod until the locking groove is fitted onto the pressure switch body, thus positioning the pressure switch body and ensuring the stability of the pressure switch body on the copper tube. This avoids the problem of shaking when welding the pressure switch body to the copper tube, thereby helping to improve the welding quality.

[0015] Compared with the prior art, the beneficial effects of this utility model are: by placing the copper tube horizontally in the positioning grooves on the two fixed blocks, and then rotating the bolt, the end of the bolt can rotate and move downward while pushing the moving fixed block to stretch the spring, and slide downward along the direction set by the limit rod until the two positioning grooves wrap around and position the copper tube, which can conveniently and stably position the copper tube.

[0016] Compared with the prior art, the beneficial effects of this utility model are: by turning on the air pump, the air pump can inject external air into the airbag ring through the three-way pipe, which can inflate the airbag ring and make it convenient to wrap and position the pressure switch body of different diameters, thus improving the scope of application.

[0017] Compared with the prior art, the beneficial effects of this utility model are: by opening the cylinder, the driving end of the cylinder can be extended to drive the cylinder to move upward until the support groove abuts against the copper tube, which can support the copper tube and avoid the problem of copper tube deformation due to excessive pressure from the sliding plate. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the front exterior of this utility model;

[0019] Figure 2 This is a three-dimensional structural diagram of the present invention viewed from below.

[0020] Figure 3 This is a three-dimensional structural diagram of the external structure of the fixing block of this utility model;

[0021] Figure 4 This utility model Figure 2 Enlarged view of point A in the middle.

[0022] In the diagram: 1. Base; 2. Guide rod; 3. Limiting component; 4. Threaded screw; 5. Slide plate; 6. Handle; 7. Locking slot; 8. Copper pipe; 9. Pressure switch body; 10. Airbag ring; 11. Air pump; 12. T-pipe; 13. Column; 14. Fixing block; 15. Limiting rod; 16. Mounting component; 17. Spring; 18. Bolt; 19. Positioning slot; 20. Elastic pad; 21. Cylinder; 22. Support component. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4This utility model provides a technical solution: a welding fixture for an air source heat pump pressure switch, including a base 1 and positioning parts set at both ends of the top of the base 1. A guide rod 2 is fixedly installed on the top of the base 1, and a limiting part 3 is fixedly installed on the top of the guide rod 2. A threaded screw 4 is rotatably set between the limiting part 3 and the base 1. A sliding plate 5 is slidably sleeved on the guide rod 2. A threaded hole adapted to the threaded screw 4 is opened in the sliding plate 5. The sliding plate 5 is threadedly sleeved on the threaded screw 4 through the threaded hole. A handle 6 is rotatably set on the top of the limiting part 3. The top of the threaded screw 4 rotatably passes through the limiting part 3 and is connected to the handle 6. Two locking grooves 7 are opened at the bottom of the sliding plate 5. A copper tube 8 is locked on the positioning part. Two pressure switch bodies 9 are placed on the top of the copper tube 8. The top of the pressure switch bodies 9 are slidably inserted into the locking grooves 7.

[0025] In practice, by rotating the handle 6, the threaded screw 4 can be rotated. During this process, the slide plate 5 will move downward along the direction set by the guide rod 2 until the locking groove 7 is fitted onto the pressure switch body 9, thus positioning the pressure switch body 9 and ensuring the stability of the pressure switch body 9 on the copper tube 8. This avoids the problem of shaking when welding the pressure switch body 9 to the copper tube 8, thereby helping to improve the welding quality.

[0026] See Figures 1-4 There are two guide rods 2, and the two guide rods 2 are symmetrically fixed between the limiting member 3 and the base 1. The setting of two guide rods 2 can ensure that the two ends of the slide plate 5 are balanced, and avoid the problem of the slide plate 5 tilting during movement.

[0027] See Figures 1-4 An airbag ring 10 is fixedly installed in the slot 7, and an air pump 11 is fixedly installed on the top of the slide plate 5. The air outlet of the air pump 11 is fixedly connected to a three-way pipe 12, and the other two ends of the three-way pipe 12 pass through the slide plate 5 and are connected to the airbag ring 10.

[0028] In specific implementation, based on the above implementation, by turning on the air pump 11, the air pump 11 can inject external air into the airbag ring 10 through the three-way pipe 12, which can inflate the airbag ring 10, making it convenient to wrap and position the pressure switch body 9 of different diameters, thus improving the applicability.

[0029] See Figures 1-4The positioning component includes a column 13, which is fixedly installed on the top of the base 1 in a vertical direction. A fixed block 14 is fixedly installed on the top of the column 13. Two limit rods 15 are provided on the fixed block 14. An installation part 16 is provided on the top of the limit rod 15. A spring 17 is provided at the bottom of the installation part 16. A movable fixed block is provided at the other end of the spring 17. A bolt 18 is threaded into the top of the installation part 16. The end of the bolt 18 rotates through the installation part 16 and abuts against the top of the movable fixed block. Positioning grooves 19 are opened on the side of the fixed block 14 opposite to the movable positioning block. The copper tube 8 is snapped into the two positioning grooves 19.

[0030] In specific implementation, based on the above implementation, by placing the copper tube 8 horizontally in the positioning grooves 19 on the two fixed blocks 14, and then rotating the bolt 18, the end of the bolt 18 can rotate and move downward, pushing the moving fixed block to stretch the spring 17, and sliding downward along the direction set by the limit rod 15, until the two positioning grooves 19 wrap around and position the copper tube 8, which can easily and stably position the copper tube 8.

[0031] Each mounting component 16 has two bottom springs 17, which are symmetrically arranged at the bottom of the mounting component 16. The springs 17 are movably sleeved on the limiting rod 15. The arrangement of the two springs 17 ensures stable sliding at both ends of the moving and fixed blocks.

[0032] See Figures 1-4 Each of the two positioning grooves 19 has an elastic pad 20 on one side opposite to the others. The elastic pad 20 is made of rubber. Because rubber has a certain degree of elasticity and high friction, it can protect the copper tube 8 while preventing slippage.

[0033] See Figures 1-4 The top of the base 1 is also provided with a cylinder 21. The driving end of the cylinder 21 is provided with a support 22. The top of the support 22 is provided with a groove, which abuts against the outer surface of the copper tube 8. There are two cylinders 21, and the two cylinders 21 are symmetrically fixedly installed on the top of the base 1. The number of support 22 corresponds to the number of cylinders 21.

[0034] In specific implementation, based on the above implementation, by opening the cylinder 21, the driving end of the cylinder 21 can be extended to drive the cylinder 21 to move upward until the bracket abuts against the copper tube 8, which can support the copper tube 8 and avoid the problem of deformation of the copper tube 8 due to excessive downward pressure from the slide plate 5.

[0035] Working principle: Before use, all electrical components involved in the welding fixture of the air source heat pump pressure switch need to be externally powered, or a battery pack needs to be installed in an area outside the base 1 that does not obstruct other components. Then, the battery pack is connected to the electrical components through wiring. It is also necessary to avoid the wiring from getting tangled due to the movement of the components. Wiring needs to be buried and planned and organized to provide power to the electrical components, thereby ensuring the normal operation and switching of the electrical components. Since external power supply or battery pack power supply for electrical components are existing technologies and are not problems that need to be solved in the background technology of this manual, they will not be explained in detail.

[0036] In use, place the copper tube 8 horizontally in the positioning grooves 19 on the two fixed blocks 14, then rotate the bolt 18. The end of the bolt 18 will rotate and move downward, pushing the tension spring 17 of the moving fixed block and sliding downward along the direction set by the limit rod 15 until the two positioning grooves 19 wrap around and position the copper tube 8. This makes it easy to stably position the copper tube 8. Then rotate the handle 6, which will drive the threaded screw 4 to rotate. During this process, the slide plate 5 will move downward along the direction set by the guide rod 2 until the locking groove 7 is fitted onto the pressure switch body 9. This will position the pressure switch body 9, ensuring the stability of the pressure switch body 9 on the copper tube 8 and avoiding the problem of shaking when welding the pressure switch body 9 and the copper tube 8, thereby helping to improve the welding quality.

[0037] By turning on the air pump 11, external air can be injected into the airbag ring 10 through the three-way pipe 12, which can inflate the airbag ring 10. This allows for easy wrapping and positioning of pressure switch bodies 9 of different diameters, thus improving the applicability. By turning on the cylinder 21, the drive end of the cylinder 21 can be extended, causing the cylinder 21 to move upward until the support groove abuts against the copper tube 8. This supports the copper tube 8 and prevents deformation of the copper tube 8 due to excessive downward pressure from the sliding plate 5.

Claims

1. A welding fixture for an air source heat pump pressure switch, comprising a base (1) and positioning components disposed at both ends of the top of the base (1), characterized in that, A guide rod (2) is fixedly installed on the top of the base (1). A limiting member (3) is fixedly installed on the top of the guide rod (2). A threaded screw (4) is rotatably provided between the limiting member (3) and the base (1). A sliding plate (5) is slidably sleeved on the guide rod (2). A threaded hole adapted to the threaded screw (4) is opened in the sliding plate (5). The sliding plate (5) is threadedly sleeved on the threaded screw (4) through the threaded hole. The top of the limiting member (3) is rotatably provided with a handle (6), the top of the threaded screw (4) rotatably passes through the limiting member (3) and is connected to the handle (6) in a transmission manner, the bottom of the slide plate (5) has two slots (7), the positioning member is fitted with a copper tube (8), the top of the copper tube (8) is placed with two pressure switch bodies (9), and the top of the pressure switch bodies (9) is slidably inserted into the slots (7).

2. The welding fixture for an air source heat pump pressure switch as described in claim 1, characterized in that: The number of guide rods (2) is two, and the two guide rods (2) are symmetrically fixed between the limiting member (3) and the base (1).

3. The welding fixture for an air source heat pump pressure switch as described in claim 1, characterized in that: An airbag ring (10) is fixedly installed in the slot (7), and an air pump (11) is fixedly installed on the top of the slide plate (5). A three-way pipe (12) is fixedly connected to the air outlet of the air pump (11). The other two ends of the three-way pipe (12) pass through the slide plate (5) and are connected to the airbag ring (10).

4. The welding fixture for an air source heat pump pressure switch as described in claim 1, characterized in that: The positioning component includes a column (13), which is fixedly installed on the top of the base (1) in a vertical direction. A fixed block (14) is fixedly installed on the top of the column (13). Two limiting rods (15) are provided on the fixed block (14). An installation part (16) is provided on the top of the limiting rod (15). A spring (17) is provided at the bottom of the installation part (16). A movable fixing block is provided at the other end of the spring (17). A bolt (18) is threaded into the top of the installation part (16). The end of the bolt (18) rotates through the installation part (16) and abuts against the top of the movable fixing block. A positioning groove (19) is provided on the side of the fixed block (14) opposite to the movable positioning block. The copper tube (8) is snapped into the two positioning grooves (19).

5. The welding fixture for an air source heat pump pressure switch as described in claim 4, characterized in that: Each of the mounting components (16) has two bottom springs (17), and the two springs (17) are symmetrically arranged at the bottom of the mounting component (16). The springs (17) are movably sleeved on the limiting rod (15).

6. The welding fixture for an air source heat pump pressure switch as described in claim 4, characterized in that: An elastic pad (20) is provided on one side of each of the two positioning grooves (19), and the elastic pad (20) is made of rubber.

7. The welding fixture for an air source heat pump pressure switch as described in claim 1, characterized in that: The base (1) is also provided with a cylinder (21) at the top. The driving end of the cylinder (21) is provided with a support (22). The top of the support (22) is provided with a groove, which abuts against the outer surface of the copper tube (8).

8. The welding fixture for an air source heat pump pressure switch as described in claim 7, characterized in that: The number of cylinders (21) is two, and the two cylinders (21) are symmetrically fixed on the top of the base (1). The number of support members (22) corresponds to the number of cylinders (21).

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