A heating sheet lead wire welding device

Abstract

The application discloses a heating sheet lead welding device, and relates to the technical field of heating sheet lead welding, which comprises an operation table, a positioning plate, positioning racks symmetrically fixed on the side of the upper surface of the operation table, a lead conveying mechanism for guiding the lead, a welding mechanism fixed on the upper surface of the positioning plate, a first lead pipe, two parallel holes arranged in the inner cavity of the positioning plate, a second lead pipe fixed on the end of the first lead pipe, a fixed box fixed on the upper surface of the positioning plate, and a heating head fixed on the inner wall of the fixed pipe. The heating sheet lead welding device can weld the lead and the heating sheet and perform quality inspection.

Description

Technical Field

[0001] This invention relates to the field of heating element lead wire welding technology, specifically a heating element lead wire welding device. Background Technology

[0002] Heating elements are the core heating components in electric heating products such as electric blankets, hand warmers, and car seat heaters. Their performance and reliability directly depend on the quality of the lead wire soldering. During the production of heating elements, two power leads need to be soldered to both ends of the heating element or specific connection points to ensure current conduction. Traditional soldering methods rely heavily on manual operation. Operators manually cut a certain length of lead wire, strip the insulation from the wire ends, and then use a soldering iron with solder wire to solder the lead wire to the pads on the heating element. Some semi-automated equipment uses single-station soldering machines, which can achieve auxiliary positioning and heating, but the feeding, cutting, and positioning of the lead wires still require manual intervention, making it a labor-intensive process.

[0003] However, existing heating element lead wire welding processes and equipment have significant shortcomings in practical applications. Firstly, manual operation makes it difficult to precisely control the lead wire extension length and the relative position between two leads, resulting in inconsistent lead wire lengths and spacing after welding, affecting subsequent assembly and product consistency. Secondly, manual wire feeding and welding are inefficient, requiring operators to frequently change lead wire rolls and manually trim wire ends, leading to high labor intensity and a high risk of fatigue causing incomplete welds, missed welds, or burns to the heating element. Traditional semi-automatic welding equipment lacks automatic lead wire feeding and cutting functions; lead wire feeding relies on manual pulling, making quantitative feeding difficult, and a separate wire trimming process is required after welding, increasing turnaround time and labor costs. Summary of the Invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a heating element lead wire welding device, comprising an operating table and a positioning plate, and a positioning frame symmetrically fixed on the upper surface side of the operating table, and further comprising; A lead wire conveying mechanism is used to guide the lead wire, and the lead wire conveying mechanism is disposed on the upper surface of the positioning plate; A welding mechanism, which is fixed to the upper surface of the positioning plate; The lead wire conveying mechanism includes a first lead wire tube, and two parallel holes are provided in the inner cavity of the positioning plate. The first lead wire tube is fixed in the hole provided in the inner cavity of the positioning plate, and a second lead wire tube is fixed at the end of the first lead wire tube. The welding mechanism includes a fixed box and a fixed tube. The fixed box is fixed on the upper surface of the positioning plate. A heating head is fixed on the inner wall of the fixed tube. A resistance wire is sleeved on the outer surface of the heating head. The end of the resistance wire is connected to a transformer through a wire. The transformer is fixed on the upper surface of the positioning plate.

[0005] Preferably, the positioning plate is triangular in shape, with the base of the triangular shape of the positioning plate rotatably connected to the upper surface of the operating table via a hinge, and an anti-slip sheet fixed to the lower surface of the positioning plate, and a handle fixed to the upper surface of the positioning plate on the side away from the hinge.

[0006] Preferably, a limiting frame is fixed at the end of the second lead tube away from the first lead tube, and a feed tube is fixed at the end of the limiting frame away from the second lead tube. A rotating cylinder is rotatably connected to the inner cavity of the limiting frame, and there are two rotating cylinders, which are distributed vertically.

[0007] Preferably, an anti-slip ring is fixedly provided on the outer surface of the rotating cylinder, a gear is fixedly provided on the outer surface of the rotating cylinder, and the gears provided on the outer surfaces of the two rotating cylinders mesh with each other. A fixing frame is fixedly provided on the outer surface of the limiting frame, and a stepper motor is fixedly provided on the inner wall of the fixing frame. The output end of the stepper motor is connected to the end of the rotating cylinder located at the top through a coupling.

[0008] Preferably, a cutting mechanism is provided at the end of the rotating cylinder at the bottom. The cutting mechanism includes a one-way bearing, the inner ring of which is fixed to the end of the rotating cylinder, and a support frame is fixed to the outer ring of which. The one-way bearing only allows the support frame to rotate when the rotating cylinder is feeding in the reverse direction. A cutting blade is fixed to the end of the support frame away from the one-way bearing. A slot is provided on the lower surface of the second lead tube. When the support frame rotates to the top, the cutting blade moves to the slot.

[0009] Preferably, a first fixing plate is fixed to the outer surface of the one-way bearing, a spring is fixed to the upper surface of the first fixing plate, a second fixing plate is fixed to the top of the spring, and the second fixing plate is fixed to the outer surface of the limiting frame.

[0010] Preferably, a track frame is fixed to the outer surface of the fixed box, a sliding frame is slidably connected to the inner cavity of the track frame, a hydraulic cylinder is fixed to the inner wall of the fixed box, a bent rod is fixed to the movable end of the hydraulic cylinder, the end of the bent rod away from the hydraulic cylinder is fixed to the lower surface of the sliding frame, the sliding frame is fixed to the outer surface of the fixed tube, and there are two fixed tubes and two heating heads.

[0011] Preferably, the welding mechanism further includes a clamping frame, which is fixed to the inner wall of the positioning plate. The clamping frame is aligned with the end of the first lead tube, and a first washer is fixed to the inner surface of the clamping frame.

[0012] Preferably, a positioning frame is fixed on the outer surface of the clamping frame, which is located directly below the heating head. A second washer is fixed on the lower surface of the positioning frame. An inlet hole is opened on the side of the positioning frame away from the clamping frame. A solder wire guide tube is fixed on the lower surface of the positioning plate, and the solder wire guide tube is aligned with the inlet hole.

[0013] This invention provides a heating element lead wire welding device. It has the following beneficial effects: 1. The heating element lead wire welding device is equipped with a lead wire conveying mechanism to accurately transport the lead wire to be welded to the welding position. Then, during the welding of the heating element lead wire, the two lead wires are moved to the designated welding point. After the lead wire welding is completed, the lead wire is automatically pulled to the designated length and then disconnected. The welding work of each heating element is completed by using the lead wire coil.

[0014] II. The heating element lead wire welding device, by setting up a welding mechanism, works by heating and welding the connection point of the lead wire and the heating element using resistance heating. During operation, the heating element and the lead wire are squeezed and positioned at the welding point, and the connection point is welded using solder wire.

[0015] Third, this heating element lead wire welding device, by setting the positioning plate as a near-triangular shape, enables it to clamp the heating element when rotating around the hinge. The front end is suspended above the heating element, facilitating the positioning of the welding points on the heating element by the welding mechanism. By setting the hinge, the bottom edge of the positioning plate is rotatably connected to the operating table, allowing the positioning plate to be flipped upwards for easy placement and removal of the heating element.

[0016] IV. This heating element lead wire welding device uses two meshing gears to cause the upper and lower rotating cylinders to rotate synchronously in opposite directions, thus clamping and pushing the lead wire. A stepper motor is fixed to the outside of the limiting frame by a fixing bracket. The stepper motor drives the top rotating cylinder to rotate, which in turn drives the bottom rotating cylinder to rotate synchronously, achieving quantitative and controllable feeding of the lead wire. After the lead wire welding is completed, the reverse rotation straightens the lead wire.

[0017] V. This heating element lead wire welding device features a one-way bearing. The inner ring of the bearing is fixed to the rotating cylinder, and the outer ring is fixed to the support frame. The one-way bearing only drives the support frame to rotate when the rotating cylinder rotates in the opposite direction; the support frame does not rotate during lead wire feeding. The support frame houses a cutting blade, which rotates with the outer ring of the one-way bearing to cut the lead wire. When the support frame rotates to the top, the cutting blade passes through the slot on the lower surface of the second lead wire tube, cutting the lead wire and facilitating the removal of the welded heating element and lead wire. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of a heating element lead wire welding device according to the present invention; Figure 2 This is a schematic diagram of the unfolded structure of a heating element lead wire welding device according to the present invention; Figure 3 This is a partial structural schematic diagram of a heating element lead wire welding device according to the present invention; Figure 4 This is a schematic diagram of the lead wire conveying mechanism of the present invention; Figure 5 This is a partial structural diagram of the lead wire conveying mechanism of the present invention; Figure 6 This is a front view of the two rotating cylinder distribution structure of the present invention; Figure 7 This is a schematic diagram of the cutting mechanism structure of the present invention; Figure 8 This is a schematic diagram of the welding mechanism structure of the present invention; Figure 9 This is a schematic cross-sectional view of the welding mechanism of the present invention; Figure 10 This is a schematic diagram of the clamping frame and positioning frame structure of the present invention; Figure 11 This is a schematic diagram of the bottom structure of the clamping frame and positioning frame of the present invention.

[0019] In the diagram: 1. Operating table; 2. Positioning frame; 3. Hinge; 4. Positioning plate; 5. Handle; 6. Anti-slip plate; 7. Solder wire guide tube; 8. Lead wire conveying mechanism; 81. First lead wire tube; 82. Second lead wire tube; 83. Groove; 84. Limiting frame; 85. Feed tube; 86. Rotating cylinder; 87. Anti-slip ring; 88. Gear; 89. Cutting mechanism; 891. One-way bearing; 892. Support frame; 893. Cutting blade; 894. 895. First fixed plate; 896. Spring; 897. Second fixed plate; 810. Fixing frame; 811. Stepper motor; 91. Welding mechanism; 92. Fixing box; 93. Hydraulic cylinder; 94. Track frame; 95. Bending rod; 96. Sliding frame; 97. Fixing tube; 98. Heating head; 99. Resistance wire; 90. Pressing frame; 911. Positioning frame; 912. First washer; 913. Second washer; 914. Transformer; 10. Hole. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0021] like Figures 1-3 As shown, the present invention provides a technical solution: a heating element lead wire welding device, including an operating table 1 and a positioning plate 4, and positioning frames 2 symmetrically fixed on the sides of the upper surface of the operating table 1. The operating table 1 provides a stable working platform for the entire welding device and serves as the mounting base for the positioning frames 2 and the positioning plate 4. The positioning frame 2 is used to position the heating element to be welded, ensuring that the heating element is in the correct position during lead wire welding, facilitating the welding process. The positioning plate 4 is used to press and position the positioned heating element, and also includes... The positioning plate 4 is triangular in shape. The base of the triangular shape is rotatably connected to the upper surface of the operating table 1 via a hinge 3. An anti-slip plate 6 is fixed to the lower surface of the positioning plate 4, and a handle 5 is fixed to the upper surface of the positioning plate 4 away from the hinge 3. By designing the positioning plate 4 as a triangular shape, it can clamp the heating element when rotating around the hinge 3, with the front end suspended above the heating element, facilitating the positioning of the welding points of the heating element by the welding mechanism 9. The hinge 3 rotatably connects the base of the positioning plate 4 to the operating table 1, allowing the positioning plate 4 to flip upwards for easy placement and removal of the heating element. The anti-slip plate 6, fixed to the lower surface of the positioning plate 4, contacts the surface of the heating element when the positioning plate 4 is lowered, preventing the heating element from sliding. The handle 5 allows the operator to grip and flip the positioning plate 4 for easy loading and unloading.

[0022] like Figures 4-7 As shown, the lead wire conveying mechanism 8 is used to guide the lead wires and is disposed on the upper surface of the positioning plate 4. By setting the lead wire conveying mechanism 8, the lead wires to be welded are accurately transported to the welding position, so that when the heating element lead wires are welded, the two lead wires are moved to the designated welding point. At the same time, after the lead wire welding is completed, the lead wires are automatically pulled to the designated length and broken, thereby completing the welding work of each heating element using the lead wire coil. The lead wire conveying mechanism 8 includes a first lead wire tube 81. Two parallel holes 10 are provided in the inner cavity of the positioning plate 4. The first lead wire tube 81 is fixed in the holes 10 in the inner cavity of the positioning plate 4, and a second lead wire tube 82 is fixed to the end of the first lead wire tube 81. The first lead wire tube 81, fixed within the holes 10 of the positioning plate 4, serves as a guide channel for the lead wire. The second lead wire tube 82, connected to the first lead wire tube 81, further constrains the direction of the lead wire. A limiting frame 84 is fixed to the end of the second lead tube 82 away from the first lead tube 81, and a feed tube 85 is fixed to the end of the limiting frame 84 away from the second lead tube 82. Two rotating cylinders 86 are rotatably connected to the inner cavity of the limiting frame 84, and the two rotating cylinders 86 are arranged vertically. By setting the limiting frame 84 and fixing it to the end of the second lead tube 82, it can simultaneously limit the two rotating cylinders 86, and the two rotating cylinders 86 are symmetrically distributed vertically after installation. The feed tube 85 is used to guide the lead wire into the space between the two rotating cylinders 86. In use, the segments of the two rolls of lead wire are passed through the two holes of the feed tube 85, through the two rotating cylinders 86, and finally into the inner cavities of the second lead tube 82 and the first lead tube 81. By setting two rotating cylinders 86 distributed vertically, which are rotatably connected to the inner cavity of the limiting frame 84, they are used to clamp and transport the lead wire when rotating forward, and at the same time, when flipping over, they straighten the lead wire after welding, thereby playing the role of checking the welding status.

[0023] An anti-slip ring 87 is fixed to the outer surface of the rotating cylinder 86, and a gear 88 is fixed to the outer surface of the rotating cylinder 86. The gears 88 on the outer surfaces of the two rotating cylinders 86 mesh with each other. A fixing frame 810 is fixed to the outer surface of the limiting frame 84, and a stepper motor 811 is fixed to the inner wall of the fixing frame 810. The output end of the stepper motor 811 is connected to the end of the rotating cylinder 86 located at the top via a coupling. The anti-slip ring 87 increases the friction between the rotating cylinder 86 and the lead wire, thereby preventing the lead wire from slipping during movement and straightening. The two meshing gears 88 enable the upper and lower rotating cylinders 86 to rotate synchronously in opposite directions, achieving clamping and pushing of the lead wire. The fixing frame 810 fixes the stepper motor 811 to the outside of the limiting frame 84. The stepper motor 811 drives the top rotating cylinder 86 to rotate, thereby driving the bottom rotating cylinder 86 to rotate synchronously, achieving quantitative and controllable feeding of the lead wire. After the lead wire welding is completed, the reverse rotation straightens the lead wire.

[0024] A cutting mechanism 89 is provided at the end of the rotating cylinder 86 located at the bottom. The cutting mechanism 89 includes a one-way bearing 891. The inner ring of the one-way bearing 891 is fixed to the end of the rotating cylinder 86, and the outer ring of the one-way bearing 891 is fixed to a support frame 892. The one-way bearing 891 only allows the support frame 892 to rotate when the rotating cylinder 86 is feeding in the reverse direction. A cutting blade 893 is fixed at the end of the support frame 892 away from the one-way bearing 891. A slot 83 is formed on the lower surface of the second lead tube 82. When the support frame 892 rotates to the top, the cutting blade 893 moves to the slot 83. By setting the one-way bearing 891, with its inner ring fixed to the rotating cylinder 86 and its outer ring fixed to the support frame 892, the one-way bearing 891 will only drive the support frame 892 to rotate when the rotating cylinder 86 rotates in the reverse direction, i.e., when the feeding direction is reversed. When feeding the lead wire, the support frame 892 will not rotate. By setting up a support frame 892 for mounting a cutting blade 893, the cutting blade 893 can rotate together with the outer ring of the one-way bearing 891 to complete the cutting of the lead wire. By setting up the cutting blade 893, when the support frame 892 rotates to the top, the cutting blade 893 passes through the hole groove 83 on the lower surface of the second lead tube 82 to cut the lead wire, thereby facilitating the removal of the soldered heating element and lead wire.

[0025] A first fixing plate 894 is fixed to the outer surface of the one-way bearing 891. A spring 895 is fixed to the upper surface of the first fixing plate 894. A second fixing plate 896 is fixed to the top of the spring 895 and is fixed to the outer surface of the limiting frame 84. By setting the first fixing plate 894, it is fixed to the outer surface of the one-way bearing 891, rotates together with the support frame 892, and is used to connect the spring 895. The function of the spring 895 is to provide a return force for the support frame 892. When the rotating drum 86 feeds material in the forward direction, the one-way bearing 891 does not drive the support frame 892 to rotate, and the spring 895 keeps the support frame 892 in the initial position. When the rotating drum 86 feeds material in the reverse direction, the support frame 892 rotates and compresses the spring 895. After cutting, the spring 895 pushes the support frame 892 to reset, which is convenient for the next cutting operation.

[0026] like Figures 8-11 As shown, welding mechanism 9 is fixed on the upper surface of positioning plate 4. The principle of welding mechanism 9 is to use resistance heating to heat and weld the connection point of lead wire and heating element. During operation, the heating element and lead wire are squeezed and positioned at the welding point, and the connection point is welded using solder wire. The welding mechanism 9 includes a fixed box 91 and a fixed tube 96. The fixed box 91 is fixed to the upper surface of the positioning plate 4. A heating head 97 is fixed to the inner wall of the fixed tube 96. A resistance wire 98 is sleeved on the outer surface of the heating head 97. The end of the resistance wire 98 is connected to a transformer 913 via a wire. The transformer 913 is fixed to the upper surface of the positioning plate 4. By setting up the fixed tube 96 and fixing the heating head 97 on the inner wall, heat is transferred to the welding point. By setting up the heating head 97 and sleeved the outer surface of the resistance wire 98, high temperature is generated when energized. By setting up the resistance wire 98 and connecting it to the transformer 913, electrical energy is converted into heat energy. By setting up the transformer 913, the heating power of the resistance wire 98 is adjusted to control the welding temperature.

[0027] A track frame 93 is fixed to the outer surface of the fixed box 91. A sliding frame 95 is slidably connected to the inner cavity of the track frame 93. A hydraulic cylinder 92 is fixed to the inner wall of the fixed box 91. A bent rod 94 is fixed to the movable end of the hydraulic cylinder 92. The end of the bent rod 94 away from the hydraulic cylinder 92 is fixed to the lower surface of the sliding frame 95. The sliding frame 95 is fixed to the outer surface of the fixed tube 96. There are two fixed tubes 96 and two heating heads 97. The track frame 93 provides vertical sliding guidance for the sliding frame 95. The sliding frame 95 can slide up and down along the track frame 93, driving the fixed tube 96 and the heating head 97 to rise and fall, thereby realizing the welding work at the welding point during the rising and falling process. The hydraulic cylinder 92 drives the bent rod 94 to extend and retract, ultimately enabling the sliding frame 95 to drive the fixed tube 96 and the heating head 97 to move vertically up and down. The bent rod 94 connects the hydraulic cylinder 92 and the sliding frame 95, transmitting the linear motion of the hydraulic cylinder 92 to the sliding frame 95. By setting two fixed tubes 96 and two heating heads 97, corresponding to the welding positions of the two leads respectively, the two leads can be welded simultaneously, improving efficiency.

[0028] The welding mechanism 9 also includes a clamping frame 99, which is fixed to the inner wall of the positioning plate 4. The clamping frame 99 is aligned with the end of the first lead tube 81, and a first washer 911 is fixed to the inner surface of the clamping frame 99. By setting the clamping frame 99, which is located at the end of the first lead tube 81, it is used to clamp the two leads required for welding during welding, preventing them from moving. By setting the first washer 911, it is fixed to the inner surface of the clamping frame 99 and makes flexible contact with the surface of the lead tube, avoiding damage to the lead tube while increasing friction.

[0029] A positioning frame 910 is fixed to the outer surface of the clamping frame 99, located directly below the heating head 97. A second washer 912 is fixed to the lower surface of the positioning frame 910. A feed hole is provided on the side of the positioning frame 910 away from the clamping frame 99. A solder wire guide tube 7 is fixed to the lower surface of the positioning plate 4, aligned with the feed hole. The positioning frame 910, located directly below the heating head 97, positions the lead wire for welding the heating element, preventing wrinkles from forming on the heating element and lead wire during welding. The second washer 912 cushions the impact when the heating head 97 presses down, preventing damage from the positioning frame 910 pressing on the heating element. The feed hole guides the solder wire into the welding area. The solder wire guide tube 7 accurately delivers the solder wire to the welding point, ensuring timely replenishment of the solder wire needed for welding.

[0030] Working principle: Place the heating element on the operating table 1, and position it initially using the positioning frames 2 on both sides. Hold the handle 5 and flip the positioning plate 4 downwards around the hinge 3, so that the anti-slip plate 6 on the lower surface of the positioning plate 4 presses the heating element firmly. Two coils of lead wire pass through the two holes in the feed tube 85 and enter between two rotating drums 86 positioned vertically. The stepper motor 811 is started, driving the top rotating drum 86 to rotate. This, in turn, drives the bottom rotating drum 86 to rotate synchronously in opposite directions via meshing gears 88. The friction of the anti-slip ring 87 propels the lead wire forward. The lead wire passes sequentially through the second lead tube 82 and the first lead tube 81, exiting through the channel between the clamping frame 99 and the positioning frame 910, reaching the soldering position. Simultaneously, solder wire is fed to the soldering point through the solder wire guide tube 7 and the feed hole. Afterwards, transformer 913 is energized, and heating head 97 of resistance wire 98 heats up. Hydraulic cylinder 92 pushes bent rod 94 and sliding frame 95 downward along track frame 93, and two fixed tubes 96 and heating head 97 descend synchronously. Heating head 97 presses the connection point of lead wire and heating element together, while melting solder wire to form solder joint. Second washer 912 under positioning frame 910 buffers the downward impact and ensures uniform welding pressure. After welding is completed, hydraulic cylinder 92 retracts and heating head 97 lifts. Stepper motor 811 rotates in reverse (i.e., reverse feeding), at which point one-way bearing 891 locks, driving support frame 892 to rotate. Cutting blade 893 passes through slot 83 on the lower surface of second lead tube 82 to cut the lead wire; simultaneously, first fixing plate 894 rotates with support frame 892 and compresses spring 895. After cutting, spring 895 pushes support frame 892 back to its original position. Reverse rotation also straightens the welded lead wire, facilitating inspection of welding quality. Subsequently, stepper motor 811 feeds in the forward direction again, delivering the next section of lead wire to the welding position. After all welding is completed, flip the positioning plate 4 upwards, remove the heating element with the soldered leads, and you can proceed with the processing of the next workpiece.

[0031] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A heating element lead wire welding device, comprising an operating table (1) and a positioning plate (4), and positioning frames (2) symmetrically fixed on the sides of the upper surface of the operating table (1), characterized in that, Also includes: A lead wire conveying mechanism (8) is used to guide the lead wire, and the lead wire conveying mechanism (8) is disposed on the upper surface of the positioning plate (4); Welding mechanism (9), which is fixed on the upper surface of positioning plate (4); The lead wire conveying mechanism (8) includes a first lead wire tube (81), and two parallel holes (10) are provided in the inner cavity of the positioning plate (4). The first lead wire tube (81) is fixed in the hole (10) provided in the inner cavity of the positioning plate (4), and a second lead wire tube (82) is fixed at the end of the first lead wire tube (81). The welding mechanism (9) includes a fixed box (91) and a fixed tube (96). The fixed box (91) is fixed on the upper surface of the positioning plate (4). A heating head (97) is fixed on the inner wall of the fixed tube (96). A resistance wire (98) is sleeved on the outer surface of the heating head (97). The end of the resistance wire (98) is connected to a transformer (913) through a wire. The transformer (913) is fixed on the upper surface of the positioning plate (4).

2. The heating element lead wire welding device according to claim 1, characterized in that: The positioning plate (4) is a triangular shape. The base of the triangular shape of the positioning plate (4) is rotatably connected to the upper surface of the operating table (1) through the hinge (3). The lower surface of the positioning plate (4) is fixed with an anti-slip plate (6). The upper surface of the positioning plate (4) away from the hinge (3) is fixed with a handle (5).

3. The heating element lead wire welding device according to claim 1, characterized in that: A limiting frame (84) is fixed at one end of the second lead tube (82) away from the first lead tube (81). A feed tube (85) is fixed at one end of the limiting frame (84) away from the second lead tube (82). A rotating cylinder (86) is rotatably connected to the inner cavity of the limiting frame (84). There are two rotating cylinders (86), and the two rotating cylinders (86) are distributed vertically.

4. The heating element lead wire welding device according to claim 3, characterized in that: The outer surface of the rotating cylinder (86) is fixed with an anti-slip ring (87), and the outer surface of the rotating cylinder (86) is fixed with a gear (88), and the gears (88) on the outer surfaces of the two rotating cylinders (86) mesh with each other. The outer surface of the limiting frame (84) is fixed with a fixing frame (810), and the inner wall of the fixing frame (810) is fixed with a stepper motor (811). The output end of the stepper motor (811) is connected to the end of the rotating cylinder (86) located at the top through a coupling.

5. The heating element lead wire welding device according to claim 4, characterized in that: A cutting mechanism (89) is provided at the end of the rotating cylinder (86) at the bottom. The cutting mechanism (89) includes a one-way bearing (891). The inner ring of the one-way bearing (891) is fixed at the end of the rotating cylinder (86). The outer ring of the one-way bearing (891) is fixed with a support frame (892). The one-way bearing (891) only allows the support frame (892) to rotate when the rotating cylinder (86) is fed in the reverse direction. A cutting blade (893) is fixed at the end of the support frame (892) away from the one-way bearing (891). A slot (83) is opened on the lower surface of the second lead tube (82). When the support frame (892) rotates to the top, the cutting blade (893) moves to the slot (83).

6. The heating element lead welding device according to claim 5, characterized in that: The outer surface of the one-way bearing (891) is fixed with a first fixing plate (894), the upper surface of the first fixing plate (894) is fixed with a spring (895), the top end of the spring (895) is fixed with a second fixing plate (896), and the second fixing plate (896) is fixed on the outer surface of the limit frame (84).

7. The heating element lead wire welding device according to claim 1, characterized in that: The outer surface of the fixed box (91) is fixed with a track frame (93), and a sliding frame (95) is slidably connected to the inner cavity of the track frame (93). A hydraulic cylinder (92) is fixed to the inner wall of the fixed box (91), and a bent rod (94) is fixed to the movable end of the hydraulic cylinder (92). The end of the bent rod (94) away from the hydraulic cylinder (92) is fixed to the lower surface of the sliding frame (95). The sliding frame (95) is fixed to the outer surface of the fixed tube (96), and there are two fixed tubes (96) and two heating heads (97).

8. The heating element lead wire welding device according to claim 7, characterized in that: The welding mechanism (9) also includes a clamping frame (99), which is fixed on the inner wall of the positioning plate (4). The clamping frame (99) is aligned with the end of the first lead tube (81), and a first washer (911) is fixed on the inner surface of the clamping frame (99).

9. A heating element lead wire welding device according to claim 8, characterized in that: A positioning frame (910) is fixed on the outer surface of the clamping frame (99). The positioning frame (910) is located directly below the heating head (97). A second washer (912) is fixed on the lower surface of the positioning frame (910). A feed hole is opened on the side of the positioning frame (910) away from the clamping frame (99). A solder wire guide tube (7) is fixed on the lower surface of the positioning plate (4). The solder wire guide tube (7) is aligned with the feed hole.

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