A cold-braze tube welding apparatus

Abstract

The utility model discloses a kind of cold coil pipe welding equipment, comprising: rack, welding station is arranged on the rack;Coil bracket, the coil bracket is used to place coil pipe;Traction straightening device, the traction straightening device is used to be pulled to welding station after straightening coil pipe;Rotary jaw device, the rotary jaw device is used to chuck cold tank and drive cold tank rotation, the rotary jaw device includes jaw driving mechanism and several clamping pieces, the jaw driving mechanism is connected with the clamping piece transmission;Telescopic device, the rotary jaw device is connected with the telescopic device transmission;Pipe clamping device, the pipe clamping device is used to clamp coil pipe;Welding device, the welding device includes wire pulling mechanism and high-frequency welding mechanism, the wire pulling mechanism is used to pull welding wire to the rotary jaw device, the high-frequency welding mechanism is arranged at the welding station.The utility model can improve welding quality and welding efficiency.

Description

Technical Field

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

[0002] In household water-cooling equipment such as water dispensers, ice makers, and tea bar machines, most currently employ a coil structure where a thick copper tube is wound around a cold tank. High-pressure liquefied refrigerant is introduced into the thick copper tube through a thin capillary tube. The high-pressure liquefied refrigerant rapidly expands and vaporizes within the thick copper tube, absorbing a large amount of heat to achieve a cooling effect. Therefore, the welding quality of the cold tank coil directly affects the cooling effect and the equipment's lifespan. Existing welding methods involve melting welding wire with a hot air gun and then welding the coil and cold tank together. However, this method suffers from inaccurate temperature control, unstable welding quality, and the formation of an oxide layer during the melting process, leading to reduced weld strength and affecting the long-term reliability of the equipment. Furthermore, the manual operation of the hot air gun during the melting process can easily cause hot liquid to splash, scalding operators and increasing safety hazards. To address these problems, this invention provides a cold tank coil welding device that improves welding quality and efficiency. Utility Model Content

[0003] This invention provides a cold-rolled coil welding device, which can improve welding quality and welding efficiency.

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

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

[0006] A coil support, the position of which corresponds to the position of the welding station, is used to place the coil;

[0007] A traction and straightening device is used to straighten the coil and pull it to the welding station.

[0008] A rotary gripper device is used to clamp a cold air chamber and drive it to rotate. The rotary gripper device includes a gripper drive mechanism and several clamping components. The gripper drive mechanism is pulsatorically connected to the clamping components.

[0009] A telescopic device is provided at the welding station, and the rotating gripper is connected to the telescopic device in a transmission manner.

[0010] A tube clamping device is disposed on the rotating jaw device and is used to clamp the coil.

[0011] 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 rotating jaw device, and the high-frequency welding mechanism is located at the welding station.

[0012] As a preferred embodiment of the above technical solution, the gripper driving mechanism is a three-jaw chuck, and the number of gripping members is three. The three gripping members are respectively disposed on the jaws of the three-jaw chuck. The inner side of the gripping member is provided with a gripping part, and the outer side of the gripping member is provided with a tensioning part. The three-jaw chuck is used to drive the gripping members to retract inward and expand outward.

[0013] As a preferred embodiment of the above technical solution, the gripper drive mechanism includes a rotating chassis, slide rails, a slider, a gripper drive rod, and a gripper drive cylinder. A plurality of slide rails are radially and evenly distributed on the chassis. The slider is slidably mounted on the slide rails. The clamping member is mounted on the slider. A tensioning part is provided on the outer side of the clamping member. The gripper drive rod abuts against the slider. The gripper drive cylinder is drively connected to the gripper drive rod. The gripper drive cylinder is used to drive the gripper drive rod to move, thereby causing the clamping member to expand outward.

[0014] As a preferred embodiment of the above technical solution, the end of the gripper drive rod is provided with a guide cone surface, the slider is provided with a guide wheel, and the guide cone surface abuts against the guide wheel.

[0015] As a preferred embodiment of the above technical solution, the telescopic device includes a telescopic motor and a telescopic guide rail, the telescopic motor is connected to the rotating gripper device, and the rotating gripper device is disposed on the telescopic guide rail.

[0016] As a preferred embodiment of the above technical solution, the pipe clamping device includes a pipe clamping block, and the pipe clamping block is provided with a pipe clamping groove.

[0017] 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 rotating gripper device.

[0018] 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 rotating gripper device.

[0019] As a preferred embodiment of the above technical solution, the traction straightening device includes a traction cylinder, a traction gripper, and two sets of straightening wheels. The traction cylinder is connected to the traction gripper. There is a traction space between the two sets of traction wheels and a straightening space between the two sets of straightening wheels.

[0020] As a preferred embodiment of the above technical solution, a cutting device is provided between the traction straightening device and the welding device. The cutting device includes a cutting blade and a cutting drive mechanism, and the cutting blade and the cutting drive mechanism are connected in a transmission manner.

[0021] This utility model provides a cold-lined liner coil welding device, comprising: a frame, a coil support, a traction and straightening device, a rotating gripper device, a telescopic device, a clamping device, and a welding device. The coil support is used to hold the coiled coil to be processed. The coil is straightened by the traction and straightening device and then conveyed to the welding station. During welding, the cold-lined liner is placed in the rotating gripper device for clamping, and the coil is conveyed to the surface of the cold-lined liner. The clamping device fixes the coil to the surface of the cold-lined liner. Subsequently, the rotating gripper device and the telescopic device work together to tightly adhere the coil to the surface of the cold-lined liner in a spiral shape. After the coil is wound, the wire-drawing mechanism precisely feeds the welding wire to the welding point, and the high-frequency welding mechanism is activated to achieve efficient fusion between the coil and the cold-lined liner, ensuring welding quality. After welding, the excess coil is cut off, and then the cold-lined liner coil is removed from the welding station. The entire process is highly automated, easy to operate, significantly improves welding quality and efficiency, effectively reduces labor costs, and is suitable for large-scale production needs.

[0022] 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

[0023] Figure 1 This is a three-dimensional structural diagram of a cold-coil coil welding device according to Embodiment 1 of this utility model;

[0024] Figure 2 This is a three-dimensional structural diagram of a cold-coil coil welding device according to Embodiment 1 of this utility model;

[0025] Figure 3 This is a three-dimensional structural diagram of a cold-coil coil welding device according to Embodiment 1 of this utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the clamping device of a cold-coil coil welding equipment according to Embodiment 1 of this utility model;

[0027] Figure 5 This is a three-dimensional structural diagram of a cold-coil coil welding device according to Embodiment 2 of this utility model;

[0028] Figure 6 This is a three-dimensional structural diagram of a cold-coil coil welding device according to Embodiment 2 of this utility model;

[0029] Figure 7 This is a three-dimensional structural diagram of the rotating gripper device of a cold-rolled coil welding equipment according to Embodiment 2 of this utility model;

[0030] In the diagram: 1. Frame; 2. Coil support; 3. Traction straightening device; 4. Rotary gripper device; 5. Gripper drive mechanism; 6. Telescopic device; 7. Pipe clamping device; 8. Welding device; 9. Cutting device; 101. Welding station; 301. Traction cylinder; 302. Traction gripper; 303. Straightening wheel; 401. Clamping component; 402. Clamping part; 403. Tensioning part; 501. Rotating chassis; 502. Slide rail; 503. Slider; 504. Gripper drive rod; 505. Gripper drive cylinder; 506. Guide cone surface; 507. Guide wheel; 601. Telescopic motor; 602. Telescopic guide rail; 701. Pipe clamping block; 702. Pipe clamping groove; 801. Wire pulling mechanism; 802. High-frequency welding mechanism; 803. Wire pulling drive mechanism; 804. Welding drive mechanism; 901. Cutting blade; 902. Cutting drive mechanism. Detailed Implementation

[0031] 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.

[0032] Example 1, see Figures 1 to 4 This utility model provides a cold-rolled liner welding device, characterized in that it includes:

[0033] Frame 1, wherein a welding station 101 is provided on the frame 1;

[0034] The coil support 2 is positioned corresponding to the position of the welding station 101, and is used to place the coil.

[0035] The traction and straightening device 3 is used to straighten the coil and pull it to the welding station 101.

[0036] A rotating gripper device 4 is used to clamp the cold liner and drive the cold liner to rotate. The rotating gripper device 4 includes a gripper drive mechanism 5 and a plurality of clamping members 401. The gripper drive mechanism 5 is connected to the clamping members 401 in a transmission manner.

[0037] Telescopic device 6 is provided at the welding station 101, and the rotating gripper device 4 is connected to the telescopic device 6 in a transmission manner.

[0038] The tube clamping device 7 is disposed on the rotating jaw device 4 and is used to clamp the coil.

[0039] The welding device 8 includes a wire-drawing mechanism 801 and a high-frequency welding mechanism 802. The wire-drawing mechanism 801 is used to draw the welding wire to the rotating gripper device 4, and the high-frequency welding mechanism 802 is located at the welding station 101.

[0040] This utility model provides a cold-lined liner coil welding device, including: a frame 1, a coil support 2, a traction and straightening device 3, a rotating gripper device 4, a telescopic device 6, a clamping device 7, and a welding device 8. The coil support 2 is used to hold the coiled coil to be processed. The coil is straightened by the traction and straightening device 3 and then transported to the welding station 101. During welding, the cold-lined liner is placed in the rotating gripper device 4 for clamping, and the coil is transported to the surface of the cold-lined liner. The clamping device 7 fixes the coil to the surface of the cold-lined liner. Subsequently, the rotating gripper device 4 and the telescopic device 6 work together to tightly adhere the coil to the surface of the cold-lined liner in a spiral shape. After the coil is wound, the wire-drawing mechanism 801 accurately delivers the welding wire to the welding point, and the high-frequency welding mechanism 802 is activated to achieve efficient fusion between the coil and the cold-lined liner, ensuring welding quality. After welding is completed, the excess coil is cut off, and then the cold coil is removed from welding station 101. The whole process is highly automated, easy to operate, significantly improves welding quality and efficiency, effectively reduces labor costs, and is suitable for large-scale production needs.

[0041] In a further embodiment of this invention, the gripper drive mechanism 5 is a three-jaw chuck, and the number of gripping members 401 is three. The three gripping members 401 are respectively disposed on the jaws of the three-jaw chuck. The inner side of the gripping member 401 is provided with a gripping part 402, and the outer side of the gripping member 401 is provided with a tensioning part 403. The three-jaw chuck is used to drive the gripping members 401 to retract inward and expand outward.

[0042] In this embodiment, when the cooling liner has a closed structure, during installation, the three-jaw chuck drives the clamping member 401 to retract inward, and the clamping part 402 of the clamping member 401 clamps the outer wall of the cooling liner, ensuring the stability of the cooling liner during rotation. When the cooling liner has a large opening structure, during installation, the clamping member 401 is inserted into the cooling liner through the opening, and the three-jaw chuck drives the clamping member 401 to expand outward, and the tensioning part 403 of the clamping member 401 is pressed tightly against the inner wall of the cooling liner, ensuring the stability of the cooling liner during rotation.

[0043] The three-jaw chuck is electrically driven, ensuring uniform and adjustable clamping force to adapt to the clamping needs of cold air chambers of different sizes and structures, further enhancing the flexibility and applicability of the equipment.

[0044] Both the clamping part 402 and the tensioning part 403 are designed with arc surfaces, which effectively increases the contact area, enhances clamping stability, avoids displacement or vibration of the cold tube when it rotates at high speed, ensures the accuracy of the coil winding, and thus ensures the quality of the subsequent welding process.

[0045] In a further embodiment of this invention, the telescopic device 6 includes a telescopic motor 601 and a telescopic guide rail 602. The telescopic motor 601 is connected to the rotating gripper device 4, and the rotating gripper device 4 is disposed on the telescopic guide rail 602.

[0046] In this embodiment, the rotating gripper device 4 is mounted on the telescopic guide rail 602. The rotating gripper device 4 on the telescopic guide rail 602 is driven by the telescopic motor 601 to move along the telescopic guide rail 602, thereby achieving precise positioning and uniform winding of the coil on the surface of the cold liner, ensuring welding accuracy and efficiency.

[0047] In a further embodiment of this invention, the pipe clamping device 7 includes a pipe clamping block 701, and the pipe clamping block 701 is provided with a pipe clamping groove 702.

[0048] In this embodiment, the clamping block 701 is provided with a clamping groove 702. The clamping block 701 is disposed on the rotating jaw device 4. The actual position of the clamping block 701 is adjusted according to the size of the cold liner, so that when the cold liner is clamped, the end of the coil is exactly located between the clamping groove 702 and the outer wall of the cold liner. The coil is fixed by the clamping groove 702 to ensure that the coil does not slip during the winding process, thereby improving the winding accuracy and stability and further optimizing the welding effect.

[0049] In a further embodiment of this invention, the welding device 8 further includes a wire-pulling drive mechanism 803. The wire-pulling mechanism 801 is connected to the wire-pulling drive mechanism 803 in a transmission manner. The wire-pulling drive mechanism 803 is used to drive the wire-pulling mechanism 801 to move closer to and away from the rotating gripper device 4.

[0050] In this embodiment, the wire-drawing drive mechanism 803 is a wire-drawing drive cylinder. During welding, the wire-drawing drive cylinder moves the wire-drawing mechanism 801 closer to the rotating gripper device 4, ensuring that the welding wire is accurately fed into the welding area of ​​the coil and the cold liner. 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 801 moves away from the rotating gripper device 4, facilitating quick removal of the welded part and preventing welding wire residue from affecting subsequent operations. This ensures the high efficiency and safety of the welding process, improving product quality and production efficiency.

[0051] In a further embodiment of this invention, the welding device 8 further includes a welding drive mechanism 804, the high-frequency welding mechanism 802 is connected to the welding drive mechanism 804, and the welding drive mechanism 804 is used to drive the high-frequency welding mechanism 802 to move closer to and away from the rotating gripper device 4.

[0052] In this embodiment, the welding drive mechanism 804 is a high-frequency welding drive cylinder. During welding, the welding drive cylinder drives the high-frequency welding mechanism 802 closer to the rotating gripper device 4, ensuring that the welding head is aligned with the connection between the coil and the cold liner, 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 802 moves away from the rotating gripper device 4, facilitating quick disassembly of the welded parts, ensuring high efficiency and safety in the welding process, and improving product quality and production efficiency.

[0053] In a further embodiment of this invention, the traction straightening device 3 includes a traction cylinder 301, a traction gripper 302, and two sets of straightening wheels 303. The traction cylinder 301 is tractively connected to the traction gripper 302. There is a traction space between the two sets of traction wheels, and a straightening space between the two sets of straightening wheels 303.

[0054] In this embodiment, during feeding, the coil is typically in a coiled shape. The coil is kept straight before welding through the coordinated action of two sets of traction wheels and two sets of straightening wheels 303, reducing bending deformation and improving welding accuracy. The traction gripper 302 is a pneumatic gripper that holds the coil. The traction cylinder 301 drives the traction gripper 302 to move, bringing the coil into the welding station 101. The two sets of straightening wheels 303 are located between the coil support 2 and the traction gripper 302, responsible for straightening and ensuring the coil remains straight when entering the welding area, avoiding welding defects caused by bending, and further improving welding stability and finished product quality.

[0055] In a further embodiment of this invention, a cutting device 9 is provided between the traction straightening device 3 and the welding device 8. The cutting device 9 includes a cutting blade 901 and a cutting drive mechanism 902, and the cutting blade 901 and the cutting drive mechanism 902 are connected in a transmission manner.

[0056] In this embodiment, the cutting drive mechanism 902 is a cutting drive motor, and the cutting blade 901 is connected to the cutting drive motor. After welding is completed, the cutting drive mechanism 902 drives the cutting blade 901 to quickly cut the coil, thereby facilitating the rapid removal of the welded parts and improving production efficiency.

[0057] Example 2, see Figures 5 to 7 The difference between Embodiment 2 and Embodiment 1 is that the gripper drive mechanism 5 includes a rotating base 501, a slide rail 502, a slider 503, a gripper drive rod 504, and a gripper drive cylinder 505. Several slide rails 502 are radially and evenly distributed on the base. The slider 503 is slidably disposed on the slide rail 502. The clamping member 401 is disposed on the slider 503. A tensioning part 403 is provided on the outer side of the clamping member 401. The gripper drive rod 504 abuts against the slider 503. The gripper drive cylinder 505 is connected to the gripper drive rod 504. The gripper drive cylinder 505 is used to drive the gripper drive rod 504 to move, thereby driving the clamping member 401 to expand outward.

[0058] In this embodiment, the gripper drive mechanism 5 is suitable for clamping cold liner structures with large openings. When clamping the cold liner, the clamping member 401 is inserted into the cold liner through the opening. The gripper drive cylinder 505 is activated, driving the gripper drive rod 504 to push the slider 503 along the slide rail 502, thereby causing the clamping member 401 to expand outward. The tensioning part 403 of the clamping member 401 is tightly attached to the inner wall of the cold liner, ensuring the stability of the cold liner during rotation. After welding, the gripper drive cylinder 505 reverses its direction, and the gripper drive rod 504 disengages from the slider 503. The clamping member 401 can be retracted by manual adjustment or other means to smoothly remove the welded part. The tensioning part 403 has an arc-shaped surface design, which effectively increases the contact area, enhances tension stability, and avoids displacement or vibration of the cold liner during high-speed rotation, ensuring the accuracy of coil winding and thus ensuring the quality of subsequent welding processes. Compared to the three-jaw chuck of Embodiment 1, the jaw drive mechanism 5 of this embodiment is cheaper, simpler in structure, and easier to maintain.

[0059] In a further embodiment of this invention, the end of the gripper drive rod 504 is provided with a guide cone surface 506, and the slider 503 is provided with a guide wheel 507, wherein the guide cone surface 506 abuts against the guide wheel 507.

[0060] In this embodiment, the cooperation between the guide cone surface 506 and the guide wheel 507 converts the axial force of the clamping drive rod into a radial expansion force, ensuring that the clamping member 401 expands uniformly, enhancing clamping stability, preventing the cold chamber from shifting during rotation, and further improving clamping accuracy and processing efficiency. The design of the guide wheel 507 reduces mechanical wear and extends the service life of the equipment.

[0061] 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.

[0062] 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.

[0063] 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-rolled liner coil welding device, characterized in that, include: A frame, on which welding stations are provided; A coil support, the position of which corresponds to the position of the welding station, is used to place the coil; A traction and straightening device is used to straighten the coil and pull it to the welding station. A rotary gripper device is used to clamp a cold air chamber and drive it to rotate. The rotary gripper device includes a gripper drive mechanism and several clamping components. The gripper drive mechanism is pulsatorically connected to the clamping components. A telescopic device is provided at the welding station, and the rotating gripper is connected to the telescopic device in a transmission manner. A tube clamping device is disposed on the rotating jaw device and is used to clamp the coil. 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 rotating jaw device, and the high-frequency welding mechanism is located at the welding station.

2. The cold-rolled coil welding equipment according to claim 1, characterized in that, The gripper drive mechanism is a three-jaw chuck, and the number of gripping components is three. The three gripping components are respectively disposed on the jaws of the three-jaw chuck. The inner side of the gripping component is provided with a gripping part, and the outer side of the gripping component is provided with a tensioning part. The three-jaw chuck is used to drive the gripping components to retract inward and expand outward.

3. The cold-rolled liner welding equipment according to claim 1, characterized in that, The gripper drive mechanism includes a rotating chassis, slide rails, a slider, a gripper drive rod, and a gripper drive cylinder. Several slide rails are radially and evenly distributed on the chassis. The slider is slidably mounted on the slide rails. The gripper is mounted on the slider. A tensioning part is provided on the outer side of the gripper. The gripper drive rod abuts against the slider. The gripper drive cylinder is drively connected to the gripper drive rod. The gripper drive cylinder is used to drive the gripper drive rod to move, thereby causing the gripper to expand outward.

4. The cold-rolled liner welding equipment according to claim 3, characterized in that, The end of the gripper drive rod is provided with a guide cone surface, and the slider is provided with a guide wheel, with the guide cone surface abutting against the guide wheel.

5. The cold-rolled coil welding equipment according to claim 1, characterized in that, The telescopic device includes a telescopic motor and a telescopic guide rail. The telescopic motor is connected to the rotating gripper device, which is mounted on the telescopic guide rail.

6. The cold-rolled coil welding equipment according to claim 1, characterized in that, The pipe clamping device includes a pipe clamping block, and the pipe clamping block is provided with a pipe clamping groove.

7. The cold-rolled coil 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 rotating gripper device.

8. The cold-rolled liner welding equipment according to claim 7, 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 rotating gripper device.

9. The cold-rolled liner welding equipment according to claim 1, characterized in that, The traction straightening device includes a traction cylinder, a traction gripper, and two sets of straightening wheels. The traction cylinder is connected to the traction gripper. There is a traction space between the two sets of traction wheels and a straightening space between the two sets of straightening wheels.

10. The cold-rolled liner welding equipment according to claim 1, characterized in that, A cutting device is provided between the traction straightening device and the welding device. The cutting device includes a cutting blade and a cutting drive mechanism, and the cutting blade and the cutting drive mechanism are connected in a transmission manner.

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