A sectional gas collecting pipe magnetic positioning and welding device

Abstract

The present application relates to air energy equipment manufacturing technical field, and disclose a kind of segmented gas collector magnetic attraction positioning welding device, including chassis, height adjusting mechanism, rotating load-bearing frame, bearing connecting rod, workpiece clamping system, angle positioning system and magnetic attraction positioning mechanism, the bottom of the chassis is provided with multiple universal wheels;The height adjusting mechanism is fixedly installed on the chassis;The rotating load-bearing frame is supported on the chassis by the height adjusting mechanism;The bearing connecting rod is connected with the rotating load-bearing frame by bearing.This application can make each welding point of gas collector assembly be rotated to the best position for welding by the bearing connecting rod structure and magnetic attraction positioning mechanism of device core, change the operation mode of traditional manual horizontal welding, overcome the influence of gravity on solder flow, thereby significantly reduce the defects such as false welding, lack of welding, make the weld forming more beautiful, firm, greatly improve the welding quality and connection strength of product.

Description

Technical Field

[0001] This invention relates to the field of air source heat pump manufacturing technology, specifically to a segmented gas collection pipe magnetic positioning welding device. Background Technology

[0002] In the production and manufacturing of refrigeration and heating equipment such as air source heat pump units, the gas collection pipe assembly, as a key fluid channel connecting the compressor and heat exchanger, directly affects the performance, energy efficiency and reliability of the whole machine. A typical gas collection pipe assembly is composed of a main gas collection pipe and various irregularly shaped pipe fittings such as straight pipes, branch pipes, Z-shaped pipes and L-shaped pipes welded to it. In order to ensure non-destructive docking with the precisely distributed flared openings on components such as evaporators and to ensure the strength of the system, the L-shaped pipes and other fittings on both sides of the assembly must be precisely vertically aligned and welded to obtain high-quality welds with beautiful shape, smooth internal flow channels and no false welds or missing welds.

[0003] In existing technologies, the welding and assembly of gas collection pipe assemblies generally rely on two methods: one is manual welding by skilled workers using handheld pipes or simple fixtures, and the other is the use of specialized welding fixtures customized for specific single products. Both of these mainstream methods have significant shortcomings. First, in manual or simple fixture welding, workers need to constantly move their positions or manually rotate the workpiece to find the appropriate welding angle, making it difficult to ensure that all weld points are always in the optimal vertical welding position of the welding torch. This easily leads to defects such as misalignment, incomplete welding, and uneven solder filling due to angle deviation and hand shaking. Second, for segmented gas collection pipes, the number of weld points is large and the spatial angles are complex. Existing rigid specialized fixtures can only provide single-dimensional fixation and cannot simultaneously meet the multi-dimensional precise positioning requirements of the workpiece in the axial and radial directions. This results in many welding dead angles, poor quality stability, and ultimately, the entire assembly cannot be precisely assembled with the fixed-spaced holes on the evaporator, causing product scrap or a decrease in overall machine performance. Summary of the Invention

[0004] In view of the shortcomings of the existing welding process mentioned in the background art, the present invention provides a segmented gas collection pipe magnetic positioning welding device, which has the advantages of precise positioning and significantly improved welding efficiency, and solves the technical problems mentioned in the background art.

[0005] This invention provides the following technical solution: It includes a chassis, a height adjustment mechanism, a rotating support frame, a bearing connecting rod, a workpiece clamping system, an angle positioning system, and a magnetic positioning mechanism. The height adjustment mechanism is fixedly installed above the chassis. The rotating support frame is supported above the chassis by the height adjustment mechanism. The bearing connecting rod is connected to the rotating support frame via a bearing, allowing the bearing connecting rod to rotate axially relative to the rotating support frame. The workpiece clamping system is mounted on the bearing connecting rod and is used to clamp the main gas collecting pipe. The angle positioning system is mounted on the bearing connecting rod and is used to perform radial angle positioning on the branch gas collecting pipe. The magnetic positioning mechanism includes a strong magnet fixed to the rotating support frame and a magnetic positioning frame mounted on the angle positioning system. The magnetic positioning frame can be attracted and fixed to the strong magnet to lock the radial angle of the angle positioning system. The rotating load-bearing frame is connected to the bearing connecting rod via the bearing and the fixed shaft, so that the bearing connecting rod can drive the workpiece clamping system and the angle positioning system to rotate axially together. The workpiece clamping system includes a limiting shell, an adjusting rod, a trapezoidal support, a slider, a first spring, and a clamping block. The limiting shell is fixed to the bearing connecting rod. The adjusting rod is movably mounted on the limiting shell. The trapezoidal support is located inside the limiting shell and connected to the lower end of the adjusting rod, so that pressing down or lifting the adjusting rod can drive the trapezoidal support to move up and down. The trapezoidal support has a protruding limiting portion. Two sliders are provided and slidably mounted on both sides inside the limiting shell. The sliders engage with the inclined surfaces of the limiting portions of the trapezoidal support. The first spring is located inside the limiting shell and presses the two sliders to both sides. The clamping block is fixed to the slider and is used to contact the main gas collecting pipe. The angle positioning system includes a support column, a hinge, and a positioning plate. The support column is fixed to the bearing connecting rod. The hinge is bolted to the support column. The positioning plate is installed on the hinge, so that the positioning plate can be flipped up or down relative to the support column. When the positioning plate is flipped down, it is used to precisely limit the straight pipe of the gas collection pipe.

[0006] Preferably, the height adjustment mechanism includes a support rod, a telescopic locking device protective shell, a bearing protective sleeve, a second spring, and a circular steel sheet. The support rod is fixed to the chassis; the telescopic locking device protective shell is sleeved on the outside of the support rod; the circular steel sheet is sleeved on the support rod and can slide on the support rod; the second spring provides an elastic force that causes the circular steel sheet to pop out radially; and the bearing protective sleeve is connected to the rotating load-bearing frame.

[0007] Preferably, the support rod has multiple positioning holes. When the circular steel sheet is inserted into any of the positioning holes under the action of the second spring, the circular steel sheet, the support rod, and the bearing protective sleeve are fixedly connected by inserting bolts, thereby realizing the height adjustment and locking of the rotating load-bearing frame.

[0008] Preferably, when the adjusting rod is pressed down, the trapezoidal support moves upward and pushes the two sliders to separate to both sides through its limiting part, thereby causing the clamping block to open; when the adjusting rod is lifted, the trapezoidal support moves downward, and the first spring pushes the two sliders and the clamping block to close towards the center, thereby clamping the main gas collecting pipe.

[0009] Preferably, the positioning plate is a detachable structure that can be replaced according to the hole spacing of different models of gas collection pipe assemblies.

[0010] Preferably, the magnetic positioning frame is connected to the support column or the bearing connecting rod via the fixed shaft, so that the angle positioning system can rotate radially clockwise or counterclockwise around the fixed shaft, and the angle is fixed by the attraction between the magnetic positioning frame and the strong magnet.

[0011] Preferably, the bottom of the chassis is provided with multiple casters.

[0012] The present invention has the following beneficial effects: 1. This invention, through the core bearing connecting rod structure and magnetic positioning mechanism, enables each welding point of the gas collection pipe assembly to be rotated to the optimal position for welding. This changes the traditional manual horizontal welding operation method, effectively overcomes the influence of gravity on the flow of solder, and thus significantly reduces defects such as incomplete welding and missing welding, making the weld formation more beautiful, uniform and firm, and greatly improving the welding quality and connection strength of the product.

[0013] 2. This invention, through its height-adjustable support rod, quick-change positioning plate, and adaptive pipe diameter spring clamping system, enables a single tooling to flexibly adapt to a full range of models from 1P to 120P. Facing the challenges of rapid iteration of air source heat pump products and diverse models of air collection pipe components, it can achieve rapid switching between different models, greatly reducing tooling investment costs and production line adjustment time, and meeting the efficiency and compatibility requirements of large-scale industrial production.

[0014] 3. By enabling the workpiece to rotate freely 360 degrees and be magnetically fixed, this invention allows the welding process to achieve a parallel operation mode of welding and assembly simultaneously. This eliminates the waiting time caused by waiting for the workpiece to be flipped and repositioned in traditional welding, transforming the originally serial and discontinuous processes into a parallel and continuous production flow. This significantly shortens the process time of a single product, reduces manpower input, and greatly improves overall production efficiency and equipment utilization. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the height adjustment mechanism of the present invention; Figure 2 This is a schematic diagram of the rotating mechanism structure of the present invention; Figure 3 This is a schematic diagram of the workpiece clamping mechanism of the present invention; Figure 4 This is a schematic diagram of the angle positioning mechanism of the present invention; Figure 5 This is a schematic diagram of the magnetic positioning mechanism of the present invention.

[0016] In the diagram: 1. Chassis; 2. Telescopic locking device protective shell; 3. Load-bearing frame; 4. Bearing connecting rod; 5. Adjusting rod; 6. First spring; 7. Sliding block; 8. Trapezoidal support; 9. Clamping block; 10. Hinge; 11. Support column; 12. Positioning plate; 13. Magnetic positioning frame; 14. Fixed shaft; 15. Bearing; 16. Limiting shell; 17. Strong magnet; 18. Universal wheel; 19. Bearing protective sleeve; 20. Circular steel sheet; 21. Second spring. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1A segmented gas collection pipe magnetic positioning welding device includes a chassis 1 with multiple casters 18 at its bottom, facilitating the movement of the entire device. A height adjustment mechanism is fixedly installed above the chassis 1. A rotating support frame 3 is supported above the chassis 1 via the height adjustment mechanism. The height adjustment mechanism includes a support rod, a telescopic locking device protective shell 2, a bearing protective sleeve 19, a second spring 21, and a circular steel plate 20. The support rod is fixed to the chassis 1. The telescopic locking device protective shell 2 is fitted over the support rod. The circular steel plate 20 is fitted onto the support rod and can slide on it. The second spring 21 provides an elastic force that causes the circular steel sheet 20 to eject radially. The bearing protective sleeve 19 is connected to the rotating load-bearing frame 3. The support rod has multiple positioning holes. When the circular steel sheet 20 is inserted into any positioning hole under the action of the second spring 21, the circular steel sheet 20, the support rod, and the bearing protective sleeve 19 are fixedly connected by inserting bolts, thereby realizing the height adjustment and locking of the rotating load-bearing frame 3. When the support rod is lifted, the circular steel sheet 20 can slide along the rod. When it reaches the preset positioning hole, the second spring 21 ejects and locks the circular steel sheet 20, and then inserts bolts to fix it to the bearing protective sleeve 19, thereby easily realizing the height adjustment.

[0019] Please see Figure 2 The bearing connecting rod 4 is connected to the rotating support frame 3 via the bearing 15, allowing the bearing connecting rod 4 to rotate axially relative to the rotating support frame 3. The rotating support frame 3 is connected to the bearing connecting rod 4 via the bearing 15 and the fixed shaft 14, enabling the bearing connecting rod 4 to drive the workpiece clamping system and the angle positioning system to rotate 360 ​​degrees axially. The connection between the bearing 15 and the support frame 3 via the bearing connecting rod 4 allows the upper component to rotate 360 ​​degrees axially. The cross magnetic positioning frame 13 is connected to the support frame via the fixed shaft 14, allowing for radial clockwise or counterclockwise rotation. After rotating to the desired angle, the magnetic positioning frame 13 can be attached to the strong magnet 17 for fixation, which is simple and efficient.

[0020] Please see Figure 3The workpiece clamping system is mounted on the bearing connecting rod 4 and is used to clamp the main gas collecting pipe. The workpiece clamping system includes a limiting shell 16, an adjusting rod 5, a trapezoidal support 8, a slider 7, a first spring 6, and a clamping block 9. The limiting shell 16 is fixed to the bearing connecting rod 4. The adjusting rod 5 is movably mounted on the limiting shell 16. The trapezoidal support 8 is located inside the limiting shell 16 and is connected to the lower end of the adjusting rod 5, so that pressing down or lifting the adjusting rod 5 can drive the trapezoidal support 8 to move up and down. The trapezoidal support 8 is provided with a protruding limiting part. Two sliders 7 are provided and are slidably mounted on the limiting shell 16. Inside, on both sides, the slider 7 engages with the inclined surface of the limiting part of the trapezoidal support 8; the first spring 6 is set inside the limiting shell 16 and presses the two sliders 7 to both sides; the clamping block 9 is fixed on the slider 7 and is used to contact the main gas collecting pipe. Pressing down the adjusting rod 5 pushes the trapezoidal support 8 upward, and the protrusion on the trapezoidal support 8 limits the movement of the sliders 7 on both sides outward within the limiting shell 16, compressing the first spring 6 and causing the clamping block 9 to separate. After the main gas collecting pipe is inserted, lifting the adjusting rod 5 causes the trapezoidal support 8 to move downward, the first spring 6 returns to its original deformation, and pushes the sliders 7 and the clamping block 9 inward, automatically clamping the pipe. By selecting a suitable spring, damage to the workpiece can be avoided.

[0021] Please see Figure 4 An angle positioning system is mounted on the bearing connecting rod 4 and is used for radial angle positioning of the gas collecting pipe branch pipe. The angle positioning system includes a support column 11, a hinge 10, and a positioning plate 12. The support column 11 is fixed on the bearing connecting rod 4 to control the distance between the positioning plate and the workpiece. The hinge 10 is bolted to the support column 11. The positioning plate 12 is mounted on the hinge 10, allowing the positioning plate 12 to be flipped up or down relative to the support column 11. When the positioning plate 12 is flipped down, it is used to precisely limit the straight pipe of the gas collecting pipe. The positioning plate 12 is a detachable structure and can be replaced according to the hole spacing of different models of gas collecting pipe components. The positioning plate 12 is connected by the hinge 10 and can be flipped down to precisely limit the straight pipe of the gas collecting pipe. The positioning plate 12 can be adjusted, replaced, and disassembled according to the hole spacing of different evaporators, thus achieving compatibility and adaptation for all models from 1P to 120P.

[0022] Please see Figure 5 The magnetic positioning mechanism includes a strong magnet 17 fixed on the rotating load-bearing frame 3 and a magnetic positioning frame 13 set on the angle positioning system. The magnetic positioning frame 13 can be attracted and fixed with the strong magnet 17 to lock the radial angle of the angle positioning system. The magnetic positioning frame 13 is connected to the support column 11 or the bearing connecting rod 4 through the fixed shaft 14, so that the angle positioning system can rotate radially clockwise or counterclockwise around the fixed shaft 14, and the angle is fixed by the attraction between the magnetic positioning frame 13 and the strong magnet 17.

[0023] The working principle of the method of using this invention is as follows: In use, first move the device to the welding station using the casters 18. Then, adjust the height according to the operator's height or welding habits: lift the rotating support frame 3 and all its components, and the circular steel plate 20 on the support rod will retract under the pressure of the second spring 21 and slide along the support rod; when it slides to the appropriate positioning port, the circular steel plate 20 will pop out and lock into the positioning port under the elastic force of the second spring 21. At this time, insert bolts to secure the circular steel plate 20, the support rod and the bearing protective sleeve 19, thus completing the height locking of the device.

[0024] Next, the main gas collecting pipe is clamped. The adjusting rod 5 of the workpiece clamping system is pressed down, causing it to push the trapezoidal support 8 upward within the limiting shell 16. The protruding limiting part on the trapezoidal support 8 then pushes the sliders 7 on both sides, causing the sliders to overcome the elastic force of the first spring 6 and slide towards both sides of the limiting shell 16, thereby causing the clamping blocks 9 fixed on the sliders to separate and open. The main gas collecting pipe is placed between the open clamping blocks 9 and, after contacting the upper surface of the trapezoidal support 8, the adjusting rod 5 is slowly raised. At this time, the trapezoidal support 8 moves downward, and the sliders 7 on both sides move towards the center under the push of the first spring 6 restoring its deformation, until the clamping blocks 9 firmly clamp the main gas collecting pipe without deforming it.

[0025] Next, position the gas collecting pipe branch pipes. Based on the required gas collecting pipe assembly model, select and install the corresponding positioning plate 12 onto the hinge 10. Place the gas collecting pipe straight pipe, branch pipe, Z-shaped pipe, or L-shaped pipe segments sequentially onto the clamped gas collecting pipe main. Flip down the positioning plate 12 of the angle positioning system to precisely position the gas collecting pipe straight pipe, ensuring its hole spacing matches that of the evaporator's long U-shaped pipe.

[0026] When starting welding, begin by welding the vertically aligned straight section of the gas collecting pipe. When welding at other angles, manually rotate the bearing connecting rod 4 to rotate the entire workpiece clamping system, the main gas collecting pipe fixed to it, and the angle positioning system axially. For example, rotate it 90 degrees to position the weld point between the main gas collecting pipe and the L-shaped pipe vertically downwards. At this point, operate the angle positioning system to rotate radially via the fixed shaft 14 for fine-tuning. After adjusting to the target angle, attach the magnetic positioning frame 13 to the strong magnet 17 to securely lock the welding angle.

[0027] During the welding process, the rotational characteristics of the device can be used to achieve assembly line operation: while an operator is welding a weld point that is currently in a vertical position on one side, another operator can assemble the already welded part on the other side of the device, or prepare the positioning for the next segment to be welded, thereby realizing parallel operation of welding and assembly and significantly improving overall efficiency.

[0028] Repeat the above steps of rotation, magnetic locking, and welding to complete the vertical welding of all weld points on the gas collection pipe assembly. After all welding work is completed, press down the adjusting rod 5 again to open the clamping block 9, and the formed integrated gas collection pipe assembly can be removed from the device.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A segmented gas collecting pipe magnetic positioning welding device, characterized in that: The system includes a chassis (1), a height adjustment mechanism, a rotating support frame (3), a bearing connecting rod (4), a workpiece clamping system, an angle positioning system, and a magnetic positioning mechanism. The height adjustment mechanism is fixedly installed above the chassis (1). The rotating support frame (3) is supported above the chassis (1) by the height adjustment mechanism. The bearing connecting rod (4) is connected to the rotating support frame (3) by a bearing (15), so that the bearing connecting rod (4) can rotate axially relative to the rotating support frame (3). The workpiece clamping system is set on the bearing connecting rod (4) and is used to clamp the main gas collecting pipe. The angle positioning system is set on the bearing connecting rod (4) and is used to perform radial angle positioning on the branch pipe of the gas collecting pipe. The magnetic positioning mechanism includes a strong magnet (17) fixed on the rotating support frame (3) and a magnetic positioning frame (13) set on the angle positioning system. The magnetic positioning frame (13) can be attracted and fixed with the strong magnet (17) to lock the radial angle of the angle positioning system. The rotating load-bearing frame (3) is connected to the bearing connecting rod (4) through the bearing (15) and the fixed shaft (14), so that the bearing connecting rod (4) can drive the workpiece clamping system and the angle positioning system to rotate 360 ​​degrees axially together. The workpiece clamping system includes a limiting shell (16), an adjusting rod (5), a trapezoidal support (8), a slider (7), a first spring (6), and a clamping block (9). The limiting shell (16) is fixed to the bearing connecting rod (4). The adjusting rod (5) is movably mounted on the limiting shell (16). The trapezoidal support (8) is located inside the limiting shell (16) and connected to the lower end of the adjusting rod (5), so that pressing down or lifting the adjusting rod (5) can drive it. The trapezoidal support (8) moves up and down, and a protruding limiting part is provided on the trapezoidal support (8); two sliders (7) are provided and are slidably disposed on both sides inside the limiting shell (16), and the sliders (7) cooperate with the inclined surface of the limiting part of the trapezoidal support (8); the first spring (6) is disposed inside the limiting shell (16) and presses the two sliders (7) to both sides; the clamping block (9) is fixed on the slider (7) and is used to contact the main gas collecting pipe. The angle positioning system includes a support column (11), a hinge (10), and a positioning plate (12). The support column (11) is fixed to the bearing connecting rod (4). The hinge (10) is bolted to the support column (11). The positioning plate (12) is installed on the hinge (10), so that the positioning plate (12) can be flipped up or down relative to the support column (11). When the positioning plate (12) is flipped down, it is used to precisely limit the straight pipe of the gas collection pipe.

2. The segmented gas collecting pipe magnetic positioning welding device according to claim 1, characterized in that: The height adjustment mechanism includes a support rod, a telescopic locking device protective shell (2), a bearing protective sleeve (19), a second spring (21), and a circular steel plate (20). The support rod is fixed to the chassis (1). The telescopic locking device protective shell (2) is sleeved on the outside of the support rod. The circular steel plate (20) is sleeved on the support rod and can slide on the support rod. The second spring (21) provides an elastic force that causes the circular steel plate (20) to pop out radially. The bearing protective sleeve (19) is connected to the rotating load-bearing frame (3).

3. The segmented gas collecting pipe magnetic positioning welding device according to claim 2, characterized in that: The support rod has multiple positioning holes. When the circular steel sheet (20) is inserted into any of the positioning holes under the action of the second spring (21), the circular steel sheet (20), the support rod and the bearing protective sleeve (19) are fixedly connected by inserting bolts, thereby realizing the height adjustment and locking of the rotating load-bearing frame (3).

4. The segmented gas collecting pipe magnetic positioning welding device according to claim 1, characterized in that: When the adjusting rod (5) is pressed down, the trapezoidal support (8) moves upward and pushes the two sliders (7) to overcome the elastic force of the first spring (6) and separate to both sides, thereby causing the clamping block (9) to open; when the adjusting rod (5) is lifted up, the trapezoidal support (8) moves downward and the first spring (6) pushes the two sliders (7) and the clamping block (9) to close towards the center, thereby clamping the main gas collection pipe.

5. The segmented gas collecting pipe magnetic positioning welding device according to claim 1, characterized in that: The positioning plate (12) is a detachable structure and can be replaced according to the hole spacing of different models of gas collection pipe assemblies.

6. The segmented gas collecting pipe magnetic positioning welding device according to claim 1, characterized in that: The magnetic positioning frame (13) is connected to the support column (11) or the bearing connecting rod (4) via the fixed shaft (14), so that the angle positioning system can rotate radially clockwise or counterclockwise around the fixed shaft (14) and achieve angle fixation by the attraction of the magnetic positioning frame (13) and the strong magnet (17).

7. A segmented gas collecting pipe magnetic positioning welding device according to any one of claims 1-6, characterized in that: The bottom of the chassis (1) is provided with multiple casters (18).

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