Automatic copper pipe welding device for water heater assembly

Abstract

The utility model discloses a copper pipe automatic welding device for water heater assembly belongs to water heater production and processing equipment technical field, and this device includes bottom plate, support mechanism, the limiting mechanism for quick compression copper pipe and the positioning mechanism for accurate alignment, and the positioning mechanism includes the support rod fixed on the support mechanism, the clamping rod of sliding setting, the threaded rod and the connecting rod, and the guide slot is set up on the clamping rod, and the both ends of connecting rod slide in the guide slot. Through the threaded rod of rotation and support rod screw thread cooperation, drive connecting rod generates linear motion to drive the clamping rod close or open, realize accurate alignment and clamping to another copper pipe. The utility model discloses through the cooperative effect of limiting mechanism and positioning mechanism, with pure mechanical structure, the low alignment accuracy of copper pipe in the prior art, the problem that clamping is not stable and is complicated to operate is solved, has the beneficial effect of accurate alignment, clamping firm, simple structure, convenient operation, can improve the welding one -time pass rate and production efficiency significantly.

Description

Technical Field

[0001] This utility model relates to the technical field of water heater manufacturing and processing equipment, and in particular to an automatic copper pipe welding device for water heater assembly. Background Technology

[0002] In the manufacturing process of water heaters, copper pipes are widely used to connect water systems due to their excellent thermal conductivity and corrosion resistance. To ensure the water system's sealing and structural integrity, multiple sections of copper pipe are usually connected by welding.

[0003] Welding quality is one of the key factors determining the reliability of water heater products. High-quality welded joints require that the ends of the two copper pipes to be welded be precisely aligned and fitted before welding to ensure a uniform and strong weld and avoid defects such as incomplete welds or missed welds.

[0004] In current production practices, copper tube alignment typically relies on simple general-purpose clamps or manual positioning by workers. However, these methods have significant shortcomings. On the one hand, manual positioning is not only labor-intensive, but the alignment accuracy also depends entirely on the operator's experience and stability, making it difficult to guarantee consistency between batches of products. On the other hand, while existing general-purpose clamps can provide a certain clamping force, they often lack precise fine-tuning capabilities. Once a slight misalignment is detected after clamping, the operator must loosen the clamp and readjust, a cumbersome process that is difficult to achieve in one step, severely impacting production efficiency and final welding quality.

[0005] Therefore, this utility model proposes an automatic copper pipe welding device for water heater assembly to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides an automatic copper pipe welding device for water heater assembly, which aims to improve the problems of low alignment accuracy of the two copper pipes to be welded, cumbersome operation and unstable clamping leading to poor welding quality in the prior art.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: an automatic copper pipe welding device for water heater assembly, comprising: a base plate, a support mechanism, a limiting mechanism, and a positioning mechanism. The support mechanism includes a support frame fixedly connected to the base plate. The positioning mechanism is supported on the base plate by the support mechanism. The positioning mechanism includes a support rod, a clamping rod, a threaded rod, and a connecting rod. The support rod is fixedly connected to the support frame. The clamping rod is slidably engaged with the support rod, and a guide groove is provided on the clamping rod. The threaded rod passes through the support rod and is threadedly connected to it. The connecting rod abuts against the end of the threaded rod, and both ends of the connecting rod are slidably connected to the guide groove of the clamping rod. The rotation of the threaded rod, through its threaded engagement with the support rod, drives itself to generate axial displacement. The axial displacement drives the connecting rod to move, thereby causing the clamping rod to close or open.

[0008] Preferably, the limiting mechanism further includes a base and a support fixed on the base, the limiting groove of the limiting mechanism is formed on the base, and the limiting mechanism further includes a crossbar rotatably connected at one end to the top of the support, the crossbar being used to press the copper tube located in the limiting groove.

[0009] Preferably, the limiting mechanism further includes a locking block and a pressure rod, the bottom of the locking block being rotatably connected to the middle of the crossbar, the bottom of the pressure rod being rotatably connected to the support, and the middle of the pressure rod being rotatably connected to the top of the locking block.

[0010] Preferably, a disc screw is threaded onto the clamping rod, and the end of the disc screw is used to abut against the outer wall of the copper tube.

[0011] Preferably, a first spring is fitted onto the outer wall of the disc screw.

[0012] Preferably, the connecting rod is also threaded with a disc screw.

[0013] Preferably, a clamping block is movably connected to the support rod, and the inner wall of the clamping block is threaded for engaging or disengaging with the threaded rod at a specific position.

[0014] Preferably, the positioning mechanism further includes a second spring connected between the clamping blocks for applying a reset tension to the clamping blocks.

[0015] Preferably, the guide groove is a groove that is inclined along the length direction of the clamping rod.

[0016] Preferably, it also includes a high-frequency welder, which is disposed on the base plate.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the problem of poor welding quality caused by low alignment accuracy of copper tube ends and unstable clamping in the prior art by setting a positioning mechanism driven by a threaded rod for fine adjustment. It achieves the effects of accurate alignment, firm clamping, and significantly improved first-pass yield of welding.

[0018] 2. This utility model solves the problems of cumbersome positioning and clamping steps, reliance on manual experience, and low overall efficiency in the prior art by combining a limiting mechanism for rapid clamping and a positioning mechanism for precise fine adjustment. It achieves the effect of step-by-step operation, clear process, and significantly shortened welding auxiliary time. Attached Figure Description

[0019] Figure 1 A perspective view of an automatic copper pipe welding device for water heater assembly proposed in this utility model; Figure 2 This is a schematic diagram of the support frame structure of an automatic copper pipe welding device for water heater assembly proposed in this utility model; Figure 3 This is a schematic diagram of the internal structure of the support rod of an automatic copper pipe welding device for water heater assembly proposed in this utility model. Figure 4 The exploded view of the pressure rod of the automatic copper pipe welding device for water heater assembly proposed in this utility model.

[0020] Legend: 1. Base plate; 2. High-frequency welder; 3. Support mechanism; 301. Support frame; 4. Positioning mechanism; 401. Support rod; 402. Clamping rod; 403. Disc screw; 404. First spring; 405. Guide groove; 406. Connecting rod; 407. Threaded rod; 408. Clamping block; 409. Second spring; 5. Limiting mechanism; 501. Base; 502. Limiting groove; 503. Support; 504. Crossbar; 505. Locking block; 506. Pressure rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1-4An embodiment of this utility model is provided: an automatic copper pipe welding device for water heater assembly, including a base plate 1, a limiting mechanism 5, a support mechanism 3 and a high-frequency welder 2 are fixedly connected on the base plate 1; the limiting mechanism 5 is used to initially clamp and fix one copper pipe; the support mechanism 3 is used to support the positioning mechanism 4, and the positioning mechanism 4 is used to precisely clamp and align another copper pipe. Specifically, the support mechanism 3 includes a support frame 301 fixedly connected to the base plate 1; The positioning mechanism 4 includes a support rod 401, which is fixedly connected to the support frame 301 and provides an installation reference for other components of the positioning mechanism 4; the positioning mechanism 4 also includes a clamping rod 402, which is slidably fitted onto the support rod 401 and has a guide groove 405. The positioning mechanism 4 further includes a threaded rod 407 and a connecting rod 406; the threaded rod 407 passes through the support rod 401 and is threadedly connected to the support rod 401; the connecting rod 406 abuts against the end of the threaded rod 407, and at the same time, the two ends of the connecting rod 406 are slidably connected to the guide grooves 405 of the two clamping rods 402 respectively. When the threaded rod 407 is rotated, the threaded engagement structure between the threaded rod 407 and the support rod 401 converts the rotational motion of the threaded rod 407 into axial displacement. This axial displacement then drives the connecting rod 406, which abuts against it, to move in a direction parallel to the axis of the threaded rod 407. Since the two ends of the connecting rod 406 are constrained to slide in the guide groove 405, the linear motion of the connecting rod 406 will drive the two clamping rods 402 to approach or separate from each other, thereby achieving the clamping and fine-tuning of the position of the copper tube. The base 501 is fixedly connected to the base plate 1. A limiting groove 502 is opened on the upper surface of the base 501. The shape and size of the limiting groove 502 are used to accommodate and initially position the copper tube to be welded. The support 503 is fixed on the base 501 to provide support for the lever system of the limiting mechanism 5. One end of the crossbar 504 is rotatably connected to the top of the support 503. The crossbar 504 is used to directly or indirectly press the copper tube located in the limiting groove 502, thereby applying the main limiting force. To drive the crossbar 504 to perform a pressing action, the limiting mechanism 5 also includes a linkage structure consisting of a locking block 505 and a pressure rod 506. Specifically, the bottom of the locking block 505 is rotatably connected to the middle of the crossbar 504; the bottom of the pressure rod 506 is rotatably connected to the support 503, while the middle of the pressure rod 506 is rotatably connected to the top of the locking block 505. Through this multi-link rotational connection, when the free end of the pressure rod 506 is lifted upward, the pressure rod 506 rotates around the connection point with the support 503, and then drives the crossbar 504 to move downward through the locking block 505, thereby achieving rapid pressing and locking of the copper tube. To achieve final locking and precise positioning of the copper tube's outer wall, a disc screw 403 is threaded onto the clamping rod 402. The end of the disc screw 403 extends beyond the inner side of the clamping rod 402. After the clamping rod 402 initially clamps the copper tube, rotating the disc screw 403 causes its end to abut against and press against the outer wall of the copper tube. To improve the adjustment accuracy and feel of the disc screw 403, a first spring 404 is fitted onto its outer wall. One end of the first spring 404 abuts against the head of the disc screw 403, and the other end abuts against the outer surface of the clamping rod 402. The first spring 404 provides preload during adjustment, making the threaded adjustment smoother and more stable. To enhance the multi-point positioning capability of the copper tube in both the axial and radial directions, a disc screw 403 is also threaded onto the connecting rod 406. This disc screw 403 provides auxiliary positioning and locking of the copper tube from another direction. To achieve rapid lifting of the threaded rod 407... The adjustment mechanism includes a clamping block 408 movably connected to the support rod 401. The inner wall of the clamping block 408 is threaded, which is used to engage or disengage with the threaded rod 407 at a specific position. When the clamping block 408 is engaged, the clamping block 408 disengages from the threaded rod 407, allowing the threaded rod 407 to be moved up and down quickly for coarse adjustment. As a supplement to the clamping block 408 structure, the positioning mechanism 4 also includes a second spring 409 connected between the two clamping blocks 408, which is used to apply a reset tension to the clamping blocks 408. When the clamping blocks 408 are released, the elastic force of the second spring 409 can automatically reset the clamping blocks 408, allowing the internal thread of the clamping block 408 to re-engage with the external thread of the threaded rod 407. To achieve efficient opening and closing of the clamping rod 402, the guide groove 405 is designed as a groove inclined along the length of the clamping rod 402. Through this inclination angle, the vertical displacement of the connecting rod 406 can be effectively converted into the horizontal displacement of the clamping rod 402.

[0023] Working principle: When performing copper pipe welding, the first copper pipe is placed in the limiting groove 502 of the limiting mechanism 5. The operator lifts the pressure rod 506 upwards, and the pressure rod 506 rotates around its connection point with the support 503. Through the connection between its middle part and the locking block 505, the locking block 505 is pushed to move. Since the bottom of the locking block 505 is rotatably connected to the crossbar 504, the movement of the locking block 505 will drive the crossbar 504 to press downwards, thereby firmly fixing the first copper pipe in the limiting groove 502.

[0024] Next, the second copper tube to be welded is placed between the two clamping rods 402 of the positioning mechanism 4. At this time, the clamping block 408 can be squeezed to disengage the internal thread of the clamping block 408 from the external thread of the threaded rod 407. Then, the threaded rod 407 can be moved up and down directly. Through the cooperation of the connecting rod 406 and the guide groove 405, the clamping rod 402 can be quickly opened and closed and coarsely adjusted. After the clamping block 408 is released, under the action of the second spring 409, the clamping block 408 automatically resets and re-engages with the threaded rod 407. After coarse adjustment, by rotating the threaded rod 407, a slight axial displacement is generated in the threaded rod 407 through the threaded transmission between the threaded rod 407 and the support rod 401. This displacement causes the connecting rod 406 to move slowly, sliding within the inclined guide groove 405, thereby precisely controlling the distance between the two clamping rods 402 until the end of the second copper tube is precisely aligned with the end of the first copper tube. After alignment, the disc screws 403 on the clamping rod 402 and the connecting rod 406 can be rotated respectively, so that the end of the disc screw 403 abuts against the outer wall of the copper tube, completing the final locking. Finally, after the two copper tubes are stably and precisely aligned and clamped by the limiting mechanism 5 and the positioning mechanism 4, the high-frequency welder 2 set on the base plate 1 is activated to weld the joint of the copper tubes, thus completing the entire welding process.

Claims

1. An automatic copper pipe welding device for water heater assembly, comprising: The base plate (1) and the support mechanism (3) include: a support frame (301) which is fixedly connected to the base plate (1). The limiting mechanism (5) is fixedly connected to the base plate (1). The limiting mechanism (5) includes a limiting groove (502) for accommodating the copper tube. Its characteristic is that it further includes: The positioning mechanism (4) includes: a support rod (401), a clamping rod (402), a threaded rod (407), and a connecting rod (406). The support rod (401) is fixedly connected to the support frame (301). The clamping rod (402) is slidably fitted onto the support rod (401), and a guide groove (405) is provided on the clamping rod (402). The threaded rod (407) passes through the support rod (401) and is threadedly connected to it. The connecting rod (406) abuts against the end of the threaded rod (407), and both ends of the connecting rod (406) are slidably connected to the guide groove (405) of the clamping rod (402). The rotation of the threaded rod (407) drives itself to generate axial displacement through its threaded engagement with the support rod (401). The axial displacement drives the connecting rod (406) to move, thereby causing the clamping rod (402) to close or open.

2. The automatic copper pipe welding device for water heater assembly according to claim 1, characterized in that: The limiting mechanism (5) further includes a base (501) and a support (503) fixed on the base (501). The limiting groove (502) is opened on the base (501). The limiting mechanism (5) further includes a crossbar (504) with one end rotatably connected to the top of the support (503). The crossbar (504) is used to press the copper tube located in the limiting groove (502).

3. The automatic copper pipe welding device for water heater assembly according to claim 2, characterized in that: The limiting mechanism (5) further includes a locking block (505) and a pressure rod (506). The bottom of the locking block (505) is rotatably connected to the middle of the crossbar (504), the bottom of the pressure rod (506) is rotatably connected to the bottom of the support (503), and the middle of the pressure rod (506) is rotatably connected to the top of the locking block (505).

4. The automatic copper pipe welding device for water heater assembly according to claim 1, characterized in that: The clamping rod (402) and the connecting rod (406) are threaded together with a disc screw (403), the end of which is used to abut against the outer wall of the copper tube.

5. The automatic copper pipe welding device for water heater assembly according to claim 4, characterized in that: A first spring (404) is fitted on the outer wall of the disc screw (403).

6. The automatic copper pipe welding device for water heater assembly according to claim 1, characterized in that: A clamping block (408) is movably connected to the support rod (401). The inner wall of the clamping block (408) is threaded, which is used to engage or disengage with the threaded rod (407) at a specific position.

7. The automatic copper pipe welding device for water heater assembly according to claim 6, characterized in that: The positioning mechanism (4) further includes a second spring (409), which is connected between the clamping block (408) and the support rod (401) and is used to apply a reset tension to the clamping block (408).

8. The automatic copper pipe welding device for water heater assembly according to claim 1, characterized in that: The guide groove (405) is a groove that is inclined along the length direction of the clamp (402), and also includes a high-frequency welder (2), which is disposed on the base plate (1).

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