A copper pipe welding fixture for an air conditioning liquid receiver

Abstract

This invention relates to the field of welding fixture technology, and more particularly to a welding fixture for copper pipes in an air conditioning liquid receiver. The fixture includes a base, a rotating plate, mounting boxes, and clamping blocks. The rotating plate is rotatably connected to the top of the base, and six mounting boxes are evenly spaced around the top of the rotating plate. Clamping blocks for holding the liquid receiver are slidably connected to the front, rear, left, and right sides of the top of each mounting box. This invention uses clamping blocks to hold the liquid receiver and pneumatic clamps to hold the copper pipes, ensuring the stability of both the liquid receiver and the copper pipes. The telescopic rod of an electric push rod can move the pneumatic clamps up and down, adjusting their height. A universal coupling allows all the bidirectional lead screws to rotate synchronously, adjusting the distance between the two pneumatic clamps. The height of the pneumatic clamps is automatically adjusted, and the distance between the two pneumatic clamps is adjusted synchronously, reducing manual operation and thus improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of welding fixture technology, and in particular to a welding fixture for copper pipes of an air conditioning liquid receiver. Background Technology

[0002] The liquid receiver and copper pipes of an air conditioner are two key components in the refrigeration system, playing an important role in the normal operation of the air conditioner. The welding quality of the liquid receiver and copper pipes directly affects the operating performance and service life of the air conditioner. Therefore, special fixtures are needed to accurately position and reliably clamp the liquid receiver and copper pipes during the welding process to ensure welding accuracy and stability.

[0003] The welding of liquid receivers and copper pipes usually adopts a multi-station independent adjustment mode. For the clamping of liquid receivers, it mostly relies on manual operation. As for the clamping of copper pipes, since the bending and width of copper pipes used by different models and specifications of air conditioners vary greatly, the clamps at each station need to be adjusted one by one. The lifting and lowering height, clamping direction and width of the clamps need to be adjusted separately to adapt to the shape requirements of different copper pipes. This adjustment method is cumbersome and time-consuming, which seriously affects production efficiency. Summary of the Invention

[0004] In view of this, the present invention provides a copper pipe welding fixture for air conditioning liquid receivers, which can overcome the disadvantage that each fixture at each workstation needs to be adjusted individually, and the parameters such as the lifting and lowering height, clamping direction and width of the fixture need to be adjusted separately to adapt to the shape requirements of different copper pipes. This adjustment method has the disadvantages of being cumbersome and time-consuming, which seriously affects production efficiency.

[0005] The technical implementation scheme of the present invention is as follows: A welding fixture for copper pipes of an air conditioner liquid receiver includes a base, a rotating plate, mounting boxes, clamping blocks, sliding shafts, a first motor, a turntable, a hexagonal box, an annular plate, a slider, a sliding rod, fastening screws, a pneumatic clamp, a lifting mechanism, an adjusting mechanism, a telescopic mechanism, and a rotating mechanism. A rotating plate is rotatably connected to the top of the base. Six mounting boxes are evenly spaced around the top of the rotating plate. Clamping blocks for holding the liquid receiver are slidably connected to the front and rear sides and left and right sides of the top of the mounting boxes. Sliding shafts are connected to the bottom of each clamping block. Six first motors are evenly spaced around the bottom of the rotating plate. The output shafts of the first motors are rotatably connected to the bottom of the mounting boxes. Each of the first motor's output shafts is connected to a turntable. The turntable has four openings evenly spaced circumferentially. The sliding shaft is located inside the openings. A ring plate is connected to the top of the hexagonal box. Six sets of sliders are evenly spaced circumferentially slidably connected to the bottom of the ring plate. Each set has two sliders. Each slider has a sliding rod slidably connected inside. Each slider has a fastening screw for fixing the sliding rod by thread. Each sliding rod is equipped with a pneumatic clamp for clamping the copper tube. The lifting mechanism is used to adjust the height of the pneumatic clamp, the adjusting mechanism is used to adjust the position of the pneumatic clamp, the telescopic mechanism is used to control the extension of the pneumatic clamp to bring it closer to the copper tube, and the rotating mechanism is used to drive the turntable to rotate.

[0006] More preferably, the lifting mechanism includes a mounting frame and an electric push rod. The mounting frame is connected inside the base, and the electric push rod is mounted on the mounting frame. The electric push rod is rotatably connected to the rotating plate, and the telescopic rod of the electric push rod is rotatably connected to the hexagonal box.

[0007] More preferably, the adjustment mechanism includes mounting blocks, a two-way lead screw, and a universal coupling. Six mounting blocks are evenly spaced around the bottom of the annular plate. A two-way lead screw is rotatably connected inside each mounting block. Two sliders in the same group are threaded to the two-way lead screw, and two adjacent two-way lead screws are connected by a universal coupling.

[0008] More preferably, the telescopic mechanism includes slide rails, slide plates, guide rails, springs, contact shafts, a second motor, a rotating block, and push plates. Six slide rails are evenly spaced around the bottom of the hexagonal housing, each slide plate is slidably connected to one of the slide rails, and each of the six slide plates is connected to a guide rail. A slide rod is located inside the guide rail, and the slide rod and guide rail slide together. A spring is connected to each slide rod, and the spring is connected to the slide block. A contact shaft is connected to the top of each slide plate. A second motor is installed on the top of the hexagonal housing, and a rotating block is connected to the output shaft of the second motor. Six push plates are evenly spaced around the rotating block. The push plates push the contact shafts, causing the six contact shafts to move away from each other. The contact shafts drive the pneumatic clamps to move away from each other, extending the pneumatic clamps and bringing them closer to the copper tube.

[0009] More preferably, the rotating mechanism includes a gear ring, a mounting plate, a third motor, and gears. The gear ring is mounted on the bottom of the rotating plate, the mounting plate is connected inside the base, the mounting plate is connected to the mounting bracket, the third motor is mounted on the top of the mounting plate, and a gear is connected to the output shaft of the third motor, the gear meshing with the gear ring.

[0010] More preferably, it also includes a photoelectric sensor and a controller. The photoelectric sensor is installed on the top of the mounting box, and the controller is installed on the base. The first motor and the photoelectric sensor are both electrically connected to the controller.

[0011] More preferably, it also includes a guide rod, with the top of the rotating plate connected to a guide rod for guiding the hexagonal box, the guide rod sliding through the hexagonal box and the annular plate.

[0012] More preferably, it also includes hexagonal blocks, with hexagonal blocks connected to the center of each universal coupling.

[0013] The present invention has the following advantages:

[0014] 1. This invention uses clamping blocks to hold the liquid reservoir and pneumatic clamps to hold the copper pipe, ensuring the stability of the liquid reservoir and copper pipe. The telescopic rod of the electric push rod can drive the pneumatic clamps to move up and down, adjusting the height of the pneumatic clamps. The universal coupling can make all the bidirectional lead screws rotate synchronously, adjusting the distance between the two pneumatic clamps. The height of the pneumatic clamps is automatically adjusted, and the distance between the two pneumatic clamps is adjusted synchronously, which can reduce manual operation and thus improve production efficiency.

[0015] 2. The photoelectric sensor can detect the liquid reservoir and send a signal to the controller. After receiving the signal, the controller controls the first motor of the loading station to work, driving the four clamping blocks to move closer to each other and clamp the liquid reservoir. At the same time, the controller will control the first motor of the unloading station to work, driving the four clamping blocks to move further apart and release the welded liquid reservoir. The automatic control of the clamping and releasing of the clamping blocks can reduce manual operation and thus improve work efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a cross-sectional view of the mounting box of the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the hexagonal box, slider, slide rod, fastening screw and pneumatic clamp of the present invention.

[0019] Figure 4 This is a three-dimensional structural diagram of the lifting mechanism of the present invention.

[0020] Figure 5 This is a three-dimensional structural diagram of the adjustment mechanism of the present invention.

[0021] Figure 6 This is a three-dimensional structural diagram of the telescopic mechanism of the present invention.

[0022] Figure 7 This is a three-dimensional structural diagram of the second motor, rotating block, and push plate of the present invention.

[0023] Figure 8 This is a three-dimensional structural diagram of the rotating mechanism of the present invention.

[0024] The components in the attached diagram are labeled as follows: 1. Base, 2. Turning plate, 3. Mounting box, 4. Clamping block, 5. Sliding shaft, 6. First motor, 7. Turntable, 8. Opening, 9. Hexagonal box, 10. Ring plate, 11. Slider, 12. Sliding rod, 13. Fastening screw, 14. Pneumatic clamp, 151. Mounting bracket, 152. Electric push rod, 161. Mounting block, 162. Two-way lead screw, 163. Universal coupling, 171. Slide rail, 172. Slide plate, 173. Guide rail, 174. Spring, 175. Contact shaft, 176. Second motor, 177. Rotating block, 178. Push plate, 181. Gear ring, 182. Mounting plate, 183. Third motor, 184. Gear, 191. Photoelectric sensor, 192. Controller, 20. Guide rod, 21. Hexagonal block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0026] refer to Figures 1-8A welding fixture for copper pipes of an air conditioning liquid receiver includes a base 1, a rotating plate 2, mounting boxes 3, clamping blocks 4, sliding shafts 5, a first motor 6, a turntable 7, a hexagonal box 9, an annular plate 10, a slider 11, a sliding rod 12, fastening screws 13, a pneumatic clamp 14, a lifting mechanism, an adjusting mechanism, a telescopic mechanism, and a rotating mechanism. The rotating plate 2 is rotatably connected to the top of the base 1. Six mounting boxes 3 are evenly spaced around the top of the rotating plate 2 by bolts. Clamping blocks 4 are slidably connected to the front, rear, left, and right sides of the top of the mounting boxes 3. Sliding shafts 5 are connected to the bottom of each clamping block 4. Six first motors 6 are evenly spaced around the bottom of the rotating plate 2 by bolts. The output shaft of the first motor 6 is rotatably connected to the bottom of the mounting box 3. Each output shaft is connected to a turntable 7, and the turntable 7 has four openings 8 evenly spaced circumferentially. The sliding shaft 5 is located inside the openings 8. The top of the hexagonal box 9 is connected to an annular plate 10 by bolts. The bottom of the annular plate 10 is slidably connected to six sets of sliders 11 evenly spaced circumferentially. Each set has two sliders 11. Each slider 11 is slidably connected to a sliding rod 12. Each slider 11 is connected to a fastening screw 13 by thread. A pneumatic clamp 14 is installed at the end of the sliding rod 12 away from the hexagonal box 9. The lifting mechanism is used to adjust the height of the pneumatic clamp 14, the adjusting mechanism is used to adjust the position of the pneumatic clamp 14, the telescopic mechanism is used to control the extension of the pneumatic clamp 14 so that the pneumatic clamp 14 is close to the copper tube, and the rotating mechanism is used to drive the turntable 2 to rotate.

[0027] refer to Figure 4 The lifting mechanism includes a mounting frame 151 and an electric push rod 152. The mounting frame 151 is bolted to the middle of the base 1. The electric push rod 152 is bolted to the middle of the mounting frame 151. The electric push rod 152 is rotatably connected to the rotating plate 2. The telescopic rod of the electric push rod 152 is rotatably connected to the bottom middle of the hexagonal box 9.

[0028] refer to Figure 5 The adjusting mechanism includes mounting blocks 161, double-acting lead screws 162, and universal couplings 163. Six mounting blocks 161 are evenly spaced around the bottom of the annular plate 10 by bolts. The mounting blocks 161 are located between two sliders 11 in the same group. Double-acting lead screws 162 are rotatably connected inside each mounting block 161. The two sliders 11 in the same group are threaded to the double-acting lead screws 162. The threads on the two sliders 11 in the same group are in opposite directions, so the double-acting lead screws 162 can drive the two sliders 11 in the same group to move in opposite directions. Adjacent double-acting lead screws 162 are connected by universal couplings 163.

[0029] refer to Figure 1 , Figure 6 and Figure 7The telescopic mechanism includes slide rails 171, slide plates 172, guide rails 173, springs 174, contact shafts 175, a second motor 176, a rotating block 177, and a push plate 178. Six slide rails 171 are evenly spaced around the bottom of the hexagonal housing 9 and connected by bolts. Slide plates 172 are slidably connected to each slide rail 171. Guide rails 173 are bolted to the sides of the six slide plates 172 that are furthest from each other. A sliding rod 12 is located within the guide rails 173, and the sliding rod 12 and the guide rails 174... 73 Sliding fit, each slide rod 12 is fitted with a spring 174, the two ends of the spring 174 are connected to the slide rod 12 and the slider 11 respectively. The spring 174 is fitted on the slide rod 12 to prevent the spring 174 from bending. The top of each slide plate 172 is connected to a contact shaft 175. The top center of the hexagonal box 9 is bolted to a second motor 176. The output shaft of the second motor 176 is connected to a rotating block 177. The rotating block 177 is circumferentially evenly spaced with six push plates 178.

[0030] refer to Figure 8 The rotating mechanism includes a gear ring 181, a mounting plate 182, a third motor 183, and a gear 184. The gear ring 181 is installed in the middle of the bottom of the rotating plate 2. The mounting plate 182 is bolted to the middle of the right side of the base 1. The bottom of the mounting plate 182 and the top of the mounting bracket 151 are bolted together. The third motor 183 is bolted to the top of the mounting plate 182. The gear 184 is connected to the output shaft of the third motor 183 by a key. The gear 184 meshes with the gear ring 181.

[0031] refer to Figure 1 and Figure 2 It also includes a photoelectric sensor 191 and a controller 192. The photoelectric sensor 191 is installed in the middle of the top of the mounting box 3 by bolts, and the controller 192 is installed in the middle of the front side of the base 1 by bolts. The first motor 6 and the photoelectric sensor 191 are both electrically connected to the controller 192.

[0032] The loading station is directly above the controller 192, where workers operate the equipment. The unloading station is to the left of the loading station. Welding equipment is located on the right or rear side of the base 1. Workers place the liquid reservoir onto the mounting box 3 at the loading station. The photoelectric sensor 191 detects the liquid reservoir and sends a signal to the controller 192. Upon receiving the signal, the controller 192 controls the first motor 6 at the loading station. The output shaft of the first motor 6 drives the turntable 7 to rotate. The turntable 7 drives the four sliding shafts 5 to move closer together. The sliding shafts 5 drive the four clamping blocks 4 to move closer together, clamping the liquid reservoir. Then, the fastening screws 13 are loosened to release the sliding rod 12. The output shaft of the second motor 176 is then controlled to rotate, driving the rotating block... 177 and push plate 178 rotate, push plate 178 pushes contact shaft 175, causing the six contact shafts 175 to move away from each other. Contact shaft 175 drives six sliding plates 172 to move away from each other. Sliding plates 172 drive six guide rails 173 to move away from each other. Guide rails 173 drive slide rod 12 and pneumatic clamp 14 to move away from each other, extending pneumatic clamp 14 and bringing it close to the copper tube. Pneumatic clamp 14 clamps the copper tube, compresses spring 174, and then tightens fastening screw 13 to fix slide rod 12. Then, the output shaft of the third motor 183 is controlled to rotate, driving gear 184 to rotate. Gear 184 drives gear ring 181 to rotate, gear ring 181 drives rotating plate 2 to rotate, thereby driving the liquid reservoir to rotate. The liquid reservoir is rotated to the welding equipment position for welding. The rotating plate 2 rotates only 60 degrees at a time, so the mounting box 3 at the unloading station rotates to the loading station. The welded liquid reservoir rotates to the unloading station, and then the worker places it back onto the mounting box 3 at the loading station. The photoelectric sensor 191 detects the liquid reservoir and sends a signal to the controller 192. Upon receiving the signal, the controller 192 controls the first motor 6 at the loading station to operate, causing the four clamping blocks 4 to move closer together, clamping the liquid reservoir. Simultaneously, the controller 192 controls the first motor 6 at the unloading station to operate, causing the output shaft of the first motor 6 to drive the turntable 7 to rotate in the opposite direction. The turntable 7 then drives the four sliding shafts 5 to move further apart. The sliding shaft 5 drives the four clamping blocks 4 to move away from each other, releasing the welded liquid reservoir. Automatic control of the clamping and releasing of the clamping blocks 4 reduces manual operation and improves work efficiency. Then, the pneumatic clamp 14 releases the welded copper pipe, allowing the welded liquid reservoir to be removed for unloading. This process is repeated continuously, enabling continuous welding of liquid reservoirs and copper pipes, resulting in higher work efficiency. In actual production, the height, curvature, and width of the copper pipes vary, so the pneumatic clamp 14 needs to be adjusted accordingly. The telescopic rod of the electric push rod 152 can move the hexagonal box 9 up and down, which in turn moves the pneumatic clamp 14 up and down. The height of the pneumatic clamp 14 can be adjusted according to the height of the copper pipe.Loosen the fastening screw 13 to release the slide rod 12. Then rotate the pneumatic clamp 14 and adjust its angle. The angle of the pneumatic clamp 14 can be adjusted according to the curvature of the copper pipe. After adjusting the angle of the pneumatic clamp 14, tighten the fastening screw 13 to fix the slide rod 12. Rotate one of the universal couplings 163 to drive the double-acting screw 162 to rotate. The universal coupling 163 drives the remaining double-acting screw 162 to rotate. The double-acting screw 162 drives the two sliders 11 to move closer to or further away from each other, thereby driving the two pneumatic clamps 14 to move closer to or further away from each other. Adjust the distance between the two pneumatic clamps 14 according to the width of the copper pipe. The height of the pneumatic clamps 14 is automatically adjusted, and the distance between the two pneumatic clamps 14 is adjusted synchronously, which can reduce manual operation and thus improve production efficiency.

[0033] refer to Figure 1 It also includes guide rods 20. Four guide rods 20 are evenly spaced on the top of the rotating plate 2. The guide rods 20 slide through the hexagonal box 9 and the annular plate 10. The guide rods 20 can guide the hexagonal box 9 and improve the stability of the hexagonal box 9.

[0034] refer to Figure 5 It also includes a hexagonal block 21. The universal coupling 163 is connected to the middle of the hexagonal block 21, which can be used to rotate the universal coupling 163, making it more convenient.

[0035] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. All equivalent substitutions made within the principles of the present invention should be included within the scope of protection of the present invention. Contents not described in detail in this invention are existing technologies known to those skilled in the art.

Claims

1. A copper pipe welding fixture for an air conditioning liquid receiver, comprising a base (1) and a rotating plate (2), wherein the rotating plate (2) is rotatably connected to the top of the base (1), characterized in that: Also include the installation box (3), clamp block (4), sliding shaft (5), the first motor (6), rotating disc (7), hexagonal box (9), ring plate (10), sliding block (11), slide rod (12), fastening screw (13), pneumatic clamp (14), lifting mechanism, adjusting mechanism, telescopic mechanism and rotating mechanism, the top of the rotating plate (2) is evenly spaced and connected with six installation boxes (3), the top of the installation box (3) is slidably connected with the clamp block (4) for clamping the liquid accumulator, the bottom of the clamp block (4) is connected with the sliding shaft (5), the bottom of the rotating plate (2) is evenly spaced and installed with six first motors (6), the output shaft of the first motor (6) is rotatably connected with the bottom of the installation box (3), the output shaft of the first motor (6) is connected with the rotating disc (7), the rotating disc (7) is evenly spaced and opened with four openings (8), the sliding shaft (5) is located in the opening (8), the top of the hexagonal box (9) is connected with the ring plate (10), the bottom of the ring plate (10) is slidably connected with six groups of sliding blocks (11), each group has two sliding blocks (11), the sliding block (11) is slidably connected with the slide rod (12), the sliding block (11) is connected with the fastening screw (13) for fixing the slide rod (12), the slide rod (12) is installed with the pneumatic clamp (14) for clamping the copper pipe, the lifting mechanism is used for adjusting the height of the pneumatic clamp (14), the adjusting mechanism is used for adjusting the position of the pneumatic clamp (14), the telescopic mechanism is used for controlling the pneumatic clamp (14) to extend, the pneumatic clamp (14) is close to the copper pipe, the rotating mechanism is used for driving the rotating plate (2) to rotate.

2. The brazing fixture for copper tubes of an air conditioner accumulator according to claim 1, wherein: The lifting mechanism includes a mounting bracket (151) and an electric push rod (152), the base (1) is connected with the mounting bracket (151), the mounting bracket (151) is installed with the electric push rod (152), the electric push rod (152) is rotatably connected with the rotating plate (2), the telescopic rod of the electric push rod (152) is rotatably connected with the hexagonal box (9).

3. The copper tube welding fixture for an air conditioner accumulator according to claim 2, wherein: The adjusting mechanism includes a mounting block (161), a bidirectional screw rod (162) and a universal coupling (163), the bottom of the ring plate (10) is evenly spaced and connected with six mounting blocks (161), the mounting block (161) is rotatably connected with the bidirectional screw rod (162), the two sliding blocks (11) in the same group are connected with the bidirectional screw rod (162) through threads, the two bidirectional screw rods (162) are connected through the universal coupling (163).

4. The brazing fixture for a copper tube of an air conditioner accumulator according to claim 3, wherein: The telescopic mechanism comprises slide rails (171), slide plates (172), guide rails (173), springs (174), contact shafts (175), a second motor (176), rotating blocks (177) and push plates (178), six slide rails (171) are connected in the bottom of the hexagonal box (9) in a circumferential uniform interval, the slide rails (171) are slidably connected with the slide plates (172), the six slide plates (172) are connected with the guide rails (173), the slide rods (12) are located in the guide rails (173), the slide rods (12) and the guide rails (173) are in sliding fit, the slide rods (12) are connected with the springs (174), the springs (174) are connected with the slide blocks (11), the slide plates (172) are connected with the contact shafts (175) at the top, the second motor (176) is installed at the top of the hexagonal box (9), the rotating blocks (177) are connected with the output shaft of the second motor (176), the rotating blocks (177) are connected with the six push plates (178) in a circumferential uniform interval, the push plates (178) are used for pushing the contact shafts (175), the six contact shafts (175) are moved in the direction away from each other, the contact shafts (175) drive the pneumatic clamps (14) to move in the direction away from each other, the pneumatic clamps (14) are extended, and the pneumatic clamps (14) are close to the copper pipes.

5. The brazing fixture for a copper tube of an air conditioner accumulator according to claim 4, wherein: The rotating mechanism comprises a gear ring (181), a mounting plate (182), a third motor (183) and a gear (184), the gear ring (181) is installed at the bottom of the rotating plate (2), the mounting plate (182) is connected in the base (1), the mounting plate (182) is connected with the mounting frame (151), the third motor (183) is installed at the top of the mounting plate (182), the gear (184) is connected with the output shaft of the third motor (183), and the gear (184) is engaged with the gear ring (181).

6. A copper pipe welding fixture for an air conditioning liquid receiver according to claim 1, characterized in that: The photoelectric sensor (191) and the controller (192) are further included, the photoelectric sensors (191) are installed at the top of the mounting box (3), the controller (192) is installed on the base (1), and the first motor (6) and the photoelectric sensor (191) are electrically connected with the controller (192).

7. A copper pipe welding fixture for an air conditioning liquid receiver according to claim 1, characterized in that: The guide rod (20) is further included, the guide rod (20) for guiding the hexagonal box (9) is connected at the top of the rotating plate (2), and the guide rod (20) slidably penetrates through the hexagonal box (9) and the annular plate (10).

8. The copper tube welding fixture for an air conditioner accumulator of claim 3, wherein: The six rhombic blocks (21) are further included, and the six rhombic blocks (21) are connected in the middle of the universal joint (163).

Images