A cold soldering capillary welding apparatus

Abstract

The utility model discloses a kind of cold gallbladder capillary tube welding equipment, comprising: rack, and welding station is arranged on the rack;Traction straightening device, for drawing capillary to welding station;Clamping jaw device, the clamping jaw device includes clamping jaw mechanism and clamping jaw clamping drive mechanism, the clamping jaw mechanism includes at least two clamping jaw deformation parts, two The deformation space is obtained between the clamping jaw deformation part, the clamping jaw clamping drive mechanism is used to drive the clamping jaw deformation part moves so that the deformation space expands and reduces;Clamping device, the clamping device is arranged at the welding station, and the clamping device is used to clamp the coil of cold gallbladder;Welding device, the welding device includes wire drawing mechanism and high-frequency welding mechanism, the wire drawing mechanism is used to draw welding wire to clamping device, and the high-frequency welding mechanism is arranged at the welding station.The utility model can improve production quality and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a cold-tube capillary welding device. Background Technology

[0002] In refrigeration equipment, most systems currently employ a coil structure where a thick copper tube is wound around a cooling tank. High-pressure liquefied refrigerant is then introduced into the thick copper tube through a thin capillary tube. The refrigerant rapidly expands and vaporizes within the tube, absorbing a large amount of heat to achieve the cooling effect. Therefore, the welding quality at the connection between the thick copper tube and the capillary tube is crucial, directly affecting refrigeration efficiency and equipment lifespan. However, due to the significant diameter difference between the thick copper tube and the capillary tube, and the difficulty in fixing the tubular structure, automated welding is challenging. Existing technologies largely rely on manual operation, resulting in low efficiency and inconsistent quality, failing to meet the demands of large-scale production. To address this issue, this invention designs a capillary welding device for cooling tanks. Through a precise mechanical structure and automated control system, it ensures the welding accuracy and stability of the thick copper tube and capillary tube, significantly improving production efficiency. Utility Model Content

[0003] This invention provides a cold-tube capillary welding device that can improve production quality and efficiency.

[0004] To solve the above-mentioned technical problems, this utility model provides a cold capillary welding device, characterized in that it includes:

[0005] A frame, on which welding stations are provided;

[0006] A traction and straightening device is used to pull the capillary tube to the welding station.

[0007] A gripper device, comprising a gripper mechanism and a gripper clamping drive mechanism, wherein the gripper mechanism comprises at least two gripper deformation parts, and a deformation space exists between the two gripper deformation parts; the gripper clamping drive mechanism is used to drive the gripper deformation parts to move so that the deformation space expands and contracts.

[0008] A clamping device is provided at the welding station and is used to clamp the coil of the cold tank.

[0009] The welding device includes a wire-drawing mechanism and a high-frequency welding mechanism. The wire-drawing mechanism is used to draw the welding wire to the clamping device, and the high-frequency welding mechanism is located at the welding station.

[0010] As a preferred embodiment of the above technical solution, the gripper device further includes a gripper movement drive mechanism, and the gripper clamping drive mechanism is connected to the gripper movement drive mechanism in a transmission manner.

[0011] As a preferred embodiment of the above technical solution, the gripper mechanism includes a first gripper arm and a second gripper arm. The first end of the first gripper arm is provided with a first gripper deformation part, and the second end of the first gripper arm is drivenly connected to the gripper clamping drive mechanism. The first end of the second gripper arm is provided with a second gripper deformation part, and the second end of the second gripper arm is drivenly connected to the gripper clamping drive mechanism.

[0012] As a preferred embodiment of the above technical solution, the first gripper arm is provided with a first hinge portion, and the second gripper arm is provided with a second hinge portion. The first hinge portion and the second hinge portion are hinged together to make the first gripper arm and the second gripper arm hinged together. The distance between the first gripper deformation portion and the first hinge portion is less than the distance from the first hinge portion to the second end of the first gripper arm, and the distance between the second gripper deformation portion and the second hinge portion is less than the distance from the second hinge portion to the second end of the second gripper arm.

[0013] As a preferred embodiment of the above technical solution, the clamping device includes a fixed clamping block, a movable clamping block, and a clamping drive mechanism. There is a clamping space between the fixed clamping block and the movable clamping block. The movable clamping block is connected to the clamping drive mechanism, and the clamping drive mechanism is used to drive the movable clamping block to move closer to and away from the fixed clamping block.

[0014] As a preferred embodiment of the above technical solution, the fixed clamping block is provided with a first clamping groove, and the movable clamping block is provided with a second clamping groove, wherein the first clamping groove and the second clamping groove cooperate to form the clamping space.

[0015] As a preferred embodiment of the above technical solution, both the first clamping groove and the second clamping groove are "V" shaped grooves.

[0016] As a preferred embodiment of the above technical solution, the welding device further includes a wire-drawing drive mechanism, which is connected to the wire-drawing drive mechanism in a transmission manner. The wire-drawing drive mechanism is used to drive the wire-drawing mechanism to move closer to and away from the clamping device.

[0017] As a preferred embodiment of the above technical solution, the welding device further includes a welding drive mechanism, wherein the high-frequency welding mechanism is connected to the welding drive mechanism in a transmission manner, and the welding drive mechanism is used to drive the high-frequency welding mechanism to move closer to and away from the clamping device.

[0018] As a preferred embodiment of the above technical solution, the traction straightening device includes two sets of traction wheels and two sets of straightening wheels, with a traction space between the two sets of traction wheels and a straightening space between the two sets of straightening wheels, and a cutting device is provided between the traction straightening device and the welding device.

[0019] This utility model provides a cold-tube capillary welding device, including: a frame, a traction and straightening device, a gripper device, a clamping device, and a welding device. During welding, the cold-tube with the coil wound around it is first placed on the welding station. One end of the coil is clamped by the clamping device for positioning. The traction and straightening device straightens the capillary and pulls it to the welding station, inserting the end of the capillary into the end of the coil. At this time, the connection between the coil and the capillary is located in the deformation space between the deformation parts of the two grippers. The gripper clamping drive mechanism is activated, causing the deformation parts of the grippers to retract inward, clamping the connection between the coil and the capillary, and finally deforming the wall of the coil to ensure a tight fit between the capillary and the coil. Then, the wire pulling mechanism and the high-frequency welding mechanism are activated. The wire pulling mechanism feeds the welding wire to the connection between the coil and the capillary, and the high-frequency welding mechanism heats the coil for welding, completing the firm connection between the capillary and the coil. By setting the gripper device, the end of the coil is flattened before welding, so that the capillary tube and the coil are tightly fitted and pre-fixed. This ensures that the relative position of the capillary tube and the coil is stable during welding, avoids welding deviation, and improves welding quality. In addition, it reduces the gap at the connection between the coil and the capillary tube, thereby reducing the difficulty of welding, improving welding efficiency, shortening the production cycle, reducing labor costs, realizing an automated welding process, and ensuring the consistency and stability of product quality.

[0020] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a cold-tube capillary welding device according to an embodiment of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of a cold-tube capillary welding device according to an embodiment of the present invention;

[0023] Figure 3 This is a three-dimensional structural diagram of the gripper device and welding device of a cold-tube capillary welding equipment according to an embodiment of the present utility model.

[0024] Figure 4 This is a three-dimensional structural diagram of the clamping device and welding device of a cold-tube capillary welding equipment according to an embodiment of the present invention;

[0025] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle;

[0026] In the diagram: 1. Frame; 2. Traction and straightening device; 3. Gripper device; 4. Gripper mechanism; 5. Clamping device; 6. Welding device; 7. Cutting device; 101. Welding station; 201. Traction wheel; 202. Straightening wheel; 301. Gripper clamping drive mechanism; 302. Gripper movement drive mechanism; 401. First gripper arm; 402. Second gripper arm; 403. First gripper deformation part; 404. Second gripper deformation part; 405. First hinge part; 406. Second hinge part; 501. Fixed clamping block; 502. Movable clamping block; 503. Clamping drive mechanism; 504. First clamping groove; 505. Second clamping groove; 601. Wire pulling mechanism; 602. High-frequency welding mechanism; 603. Wire pulling drive mechanism; 604. Welding drive mechanism; 701. Cutting blade; 702. Cutting drive mechanism. Detailed Implementation

[0027] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] See Figures 1 to 5 This utility model provides a cold-tube capillary welding device, characterized in that it includes:

[0029] Frame 1, wherein a welding station 101 is provided on the frame 1;

[0030] The traction and straightening device 2 is used to pull the capillary tube to the welding station 101.

[0031] The gripper device 3 includes a gripper mechanism 4 and a gripper clamping drive mechanism 301. The gripper mechanism 4 includes at least two gripper deformation parts, and there is a deformation space between the two gripper deformation parts. The gripper clamping drive mechanism 301 is used to drive the gripper deformation parts to move so that the deformation space expands and shrinks.

[0032] Clamping device 5, which is disposed at the welding station 101, is used to clamp the coil of the cold tank.

[0033] The welding device 6 includes a wire-drawing mechanism 601 and a high-frequency welding mechanism 602. The wire-drawing mechanism 601 is used to draw the welding wire to the clamping device 5, and the high-frequency welding mechanism 602 is located at the welding station 101.

[0034] This utility model embodiment provides a cold-liner capillary welding device 6, including: a frame 1, a traction and straightening device 2, a gripper device 3, a clamping device 5, and a welding device 6. During welding, the cold-liner with the coil wound around it is first placed on the welding station 101. One end of the coil is clamped by the clamping device 5 for positioning. The traction and straightening device 2 straightens the capillary and pulls it to the welding station 101, inserting the end of the capillary into the end of the coil. At this time, the connection between the coil and the capillary is located between the two components described above. Within the deformation space between the deformable parts of the grippers, the gripper clamping drive mechanism 301 is activated, causing the deformable parts of the grippers to contract inward, clamping the connection between the coil and the capillary tube, and ultimately deforming the wall of the coil to ensure a tight fit between the capillary tube and the coil. Subsequently, the wire-drawing mechanism 601 and the high-frequency welding mechanism 602 are activated. The wire-drawing mechanism 601 feeds the welding wire to the connection between the coil and the capillary tube, and the high-frequency welding mechanism 602 heats the coil for welding, completing a firm connection between the capillary tube and the coil. By setting the gripper device 3, the end of the coil is flattened before welding, pre-fixing the capillary tube and the coil to ensure a stable relative position during welding, avoiding welding deviations, and improving welding quality. Furthermore, it reduces the gap at the connection between the coil and the capillary tube, thereby reducing welding difficulty, increasing welding efficiency, shortening the production cycle, reducing labor costs, realizing an automated welding process, and ensuring the consistency and stability of product quality.

[0035] In a further embodiment of this invention, the gripper device 3 further includes a gripper movement drive mechanism 302, and the gripper clamping drive mechanism 301 is connected to the gripper movement drive mechanism 302 in a transmission connection.

[0036] In this embodiment, the gripper movement drive mechanism 302 is a gripper movement drive cylinder. The extension and retraction of the cylinder controls the gripper clamping drive mechanism 301 and the gripper deformation part to move closer to and away from the clamping device 5. In use, the gripper movement drive cylinder drives the gripper deformation part closer to the clamping device 5 to a predetermined position, ensuring that the gripper deformation part is accurately aligned with the connection between the coil and the capillary tube. After the two gripper deformation parts flatten and pre-fix the end of the coil, the gripper movement drive cylinder drives the gripper deformation part away from the clamping device 5, ensuring sufficient welding space and avoiding damage to the grippers during welding, further improving the stability and safety of welding.

[0037] In a further embodiment of this invention, the gripper mechanism 4 includes a first gripper arm 401 and a second gripper arm 402. The first end of the first gripper arm 401 is provided with a first gripper deformation part 403, and the second end of the first gripper arm 401 is drivenly connected to the gripper clamping drive mechanism 301. The first end of the second gripper arm 402 is provided with a second gripper deformation part 404, and the second end of the second gripper arm 402 is drivenly connected to the gripper clamping drive mechanism 301.

[0038] In this embodiment, the two jaw deformation parts are the first jaw deformation part 403 and the second jaw deformation part 404, respectively. The jaw clamping drive mechanism 301 is a jaw cylinder. The opening and closing of the jaw cylinder controls the movement of the first jaw arm 401 and the second jaw arm 402, so that the first jaw deformation part 403 and the second jaw deformation part 404 clamp or release synchronously, ensuring that the connection between the coil and the capillary tube is uniformly stressed, further improving the accuracy and stability of the pre-fixation, thereby ensuring the welding quality.

[0039] In a further embodiment of this invention, the first gripper arm 401 is provided with a first hinge portion 405, and the second gripper arm 402 is provided with a second hinge portion 406. The first hinge portion 405 and the second hinge portion 406 are hinged together, such that the first gripper arm 401 and the second gripper arm 402 are hinged together. The distance between the first gripper deformation portion 403 and the first hinge portion 405 is less than the distance from the first hinge portion 405 to the second end of the first gripper arm 401. The distance between the second gripper deformation portion 404 and the second hinge portion 406 is less than the distance from the second hinge portion 406 to the second end of the second gripper arm 402.

[0040] In this embodiment, the gripper clamping drive cylinder is connected to the second end of the first gripper arm 401. The distance between the first gripper deformation part 403 and the first hinge part 405 is less than the distance from the first hinge part 405 to the second end of the first gripper arm 401. When pre-fixing the coil end by flattening, the lever arm length from the gripper clamping drive cylinder to the first hinge part 405 is increased. Under the condition that the driving force of the gripper clamping drive cylinder is consistent, the clamping torque is improved, ensuring that the first gripper deformation part 403 provides sufficient clamping force during the pre-fixing process. Only a relatively small driving force is needed to achieve the pre-fixing of the coil end by flattening, and the energy consumption of the cylinder is effectively reduced, thereby improving the overall working efficiency of the equipment. Similarly, the distance design between the second gripper deformation part 404 and the second hinge part 406 is also the same, ensuring that the second gripper arm 402 provides sufficient clamping force during pre-fixing, while reducing the driving energy consumption of the second gripper arm 402 and improving the overall working efficiency of the equipment.

[0041] In a further embodiment of this invention, the clamping device 5 includes a fixed clamping block 501, a movable clamping block 502, and a clamping drive mechanism 503. There is a clamping space between the fixed clamping block 501 and the movable clamping block 502. The movable clamping block 502 is connected to the clamping drive mechanism 503. The clamping drive mechanism 503 is used to drive the movable clamping block 502 to move closer to and away from the fixed clamping block 501.

[0042] In this embodiment, the clamping drive mechanism 503 is a clamping drive cylinder. When the clamping drive cylinder drives the movable clamping block 502 to move closer to the fixed clamping block 501, the clamping space gradually decreases, achieving tight fixation of the coil. Since the weight of the cooling liner is usually small, it is only necessary to fix and position the end of the coil to complete the fixation and positioning of the cooling liner and the coil, thereby ensuring that the capillary tube can be accurately inserted into the coil. After welding is completed, the clamping drive cylinder drives the movable clamping block 502 to reset, the clamping space is restored, and it is convenient to quickly remove the cooling liner, the coil and the capillary tube from the welding area, simplifying the operation process and further improving production efficiency and welding quality.

[0043] In a further embodiment of this invention, the fixed clamping block 501 is provided with a first clamping groove 504, and the movable clamping block 502 is provided with a second clamping groove 505. The first clamping groove 504 and the second clamping groove 505 cooperate to form the clamping space.

[0044] In this embodiment, the first clamping groove 504 and the second clamping groove 505 cooperate to form a clamping space for accommodating the end of the coil, ensuring that the end of the coil is stable and does not easily slip during the clamping process, further improving the clamping accuracy and reliability, thereby optimizing the stability and efficiency of the entire welding process.

[0045] In a further embodiment of this example, both the first clamping groove 504 and the second clamping groove 505 are "V" shaped grooves.

[0046] In this embodiment, both the first clamping groove 504 and the second clamping groove 505 are "V" shaped grooves. The "V" shaped groove design has an automatic alignment function during clamping, which can ensure that the end of the coil is automatically centered during clamping, avoiding errors caused by manual feeding, further improving the stability and accuracy of clamping, and optimizing the welding effect.

[0047] In a further embodiment of this invention, the welding device 6 further includes a wire-pulling drive mechanism 603. The wire-pulling mechanism 601 is connected to the wire-pulling drive mechanism 603 in a transmission manner. The wire-pulling drive mechanism 603 is used to drive the wire-pulling mechanism 601 to move closer to and away from the clamping device 5.

[0048] In this embodiment, the wire-drawing drive mechanism 603 is a wire-drawing drive cylinder. During welding, the wire-drawing drive cylinder moves the wire-drawing mechanism 601 closer to the clamping device 5, ensuring that the welding wire is accurately fed into the welding area of ​​the coil and capillary tube. This avoids welding defects caused by excessively long or short exposed welding wire, improves welding accuracy and reliability, and further optimizes the overall welding process. After welding is completed, the wire-drawing drive cylinder resets, and the wire-drawing mechanism 601 moves away from the clamping device 5, facilitating quick removal of the welded part and preventing welding wire residue from affecting subsequent operations. This ensures the efficiency and safety of the welding process, improving product quality and production efficiency.

[0049] In a further embodiment of this invention, the welding device 6 further includes a welding drive mechanism 604, the high-frequency welding mechanism 602 is connected to the welding drive mechanism 604, and the welding drive mechanism 604 is used to drive the high-frequency welding mechanism 602 to move closer to and away from the clamping device 5.

[0050] In this embodiment, the welding drive mechanism 604 is a high-frequency welding drive cylinder. During welding, the welding drive cylinder drives the high-frequency welding mechanism 602 closer to the clamping device 5, ensuring that the welding head is aligned with the connection between the coil and the capillary tube, precisely controlling the welding position and force, avoiding welding deviation, and improving welding quality. After welding is completed, the welding drive cylinder resets, and the high-frequency welding mechanism 602 moves away from the clamping device 5, facilitating quick disassembly of the welded parts, ensuring the efficiency and safety of the welding process, and improving product quality and production efficiency.

[0051] In a further embodiment of this invention, the traction straightening device 2 includes two sets of traction wheels 201 and two sets of straightening wheels 202. There is a traction space between the two sets of traction wheels 201 and a straightening space between the two sets of straightening wheels 202. A cutting device 7 is provided between the traction straightening device 2 and the welding device 6.

[0052] In this embodiment, during feeding, the capillary is typically coiled. Through the coordinated action of two sets of traction wheels 201 and two sets of straightening wheels 202, the capillary is ensured to remain straight before welding, reducing bending deformation and improving welding accuracy. The two sets of traction wheels 201 provide traction, while the two sets of straightening wheels 202 are responsible for straightening, ensuring the capillary remains straight when entering the welding area, avoiding welding defects caused by bending, and further improving welding stability and finished product quality.

[0053] A cutting device 7 is provided between the traction straightening device 2 and the welding device 6. The cutting device 7 includes a cutting blade 701 and a cutting drive mechanism 702. The cutting blade 701 and the cutting drive mechanism 702 are connected in a transmission manner. After welding is completed, the cutting drive mechanism 702 drives the cutting blade 701 to quickly cut the capillary, thereby facilitating the rapid removal of the welded parts and improving production efficiency.

[0054] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Furthermore, the described specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A cold-tube capillary welding device, characterized in that, include: A frame, on which welding stations are provided; A traction and straightening device is used to pull the capillary tube to the welding station. A gripper device, comprising a gripper mechanism and a gripper clamping drive mechanism, wherein the gripper mechanism comprises at least two gripper deformation parts, and a deformation space exists between the two gripper deformation parts; the gripper clamping drive mechanism is used to drive the gripper deformation parts to move so that the deformation space expands and contracts. A clamping device is provided at the welding station and is used to clamp the coil of the cold tank. The welding device includes a wire-drawing mechanism and a high-frequency welding mechanism. The wire-drawing mechanism is used to draw the welding wire to the clamping device, and the high-frequency welding mechanism is located at the welding station.

2. The cold-tube capillary welding equipment according to claim 1, characterized in that, The gripper device further includes a gripper movement drive mechanism, and the gripper clamping drive mechanism is connected to the gripper movement drive mechanism in a transmission manner.

3. The cold-tube capillary welding equipment according to claim 2, characterized in that, The gripper mechanism includes a first gripper arm and a second gripper arm. The first end of the first gripper arm is provided with a first gripper deformation part, and the second end of the first gripper arm is drivenly connected to the gripper clamping drive mechanism. The first end of the second gripper arm is provided with a second gripper deformation part, and the second end of the second gripper arm is drivenly connected to the gripper clamping drive mechanism.

4. The cold-tube capillary welding equipment according to claim 3, characterized in that, The first gripper arm is provided with a first hinge portion, and the second gripper arm is provided with a second hinge portion. The first hinge portion and the second hinge portion are hinged together to make the first gripper arm and the second gripper arm hinged. The distance between the first gripper deformation portion and the first hinge portion is less than the distance from the first hinge portion to the second end of the first gripper arm, and the distance between the second gripper deformation portion and the second hinge portion is less than the distance from the second hinge portion to the second end of the second gripper arm.

5. The cold-tube capillary welding equipment according to claim 1, characterized in that, The clamping device includes a fixed clamping block, a movable clamping block, and a clamping drive mechanism. There is a clamping space between the fixed clamping block and the movable clamping block. The movable clamping block is connected to the clamping drive mechanism. The clamping drive mechanism is used to drive the movable clamping block to move closer to and away from the fixed clamping block.

6. The cold-tube capillary welding equipment according to claim 5, characterized in that, The fixed clamping block is provided with a first clamping groove, and the movable clamping block is provided with a second clamping groove. The first clamping groove and the second clamping groove cooperate to form the clamping space.

7. The cold-tube capillary welding equipment according to claim 6, characterized in that, Both the first clamping groove and the second clamping groove are "V" shaped grooves.

8. The cold-tube capillary welding equipment according to claim 1, characterized in that, The welding device further includes a wire-drawing drive mechanism, which is connected to the wire-drawing drive mechanism in a transmission manner. The wire-drawing drive mechanism is used to drive the wire-drawing mechanism to move closer to and away from the clamping device.

9. The cold-tube capillary welding equipment according to claim 8, characterized in that, The welding device further includes a welding drive mechanism, and the high-frequency welding mechanism is connected to the welding drive mechanism in a transmission manner. The welding drive mechanism is used to drive the high-frequency welding mechanism to move closer to and away from the clamping device.

10. The cold-tube capillary welding equipment according to claim 1, characterized in that, The traction and straightening device includes two sets of traction wheels and two sets of straightening wheels. There is a traction space between the two sets of traction wheels and a straightening space between the two sets of straightening wheels. A cutting device is provided between the traction and straightening device and the welding device.

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