Semi-automatic electric arc welding device for machining bedstead

Abstract

The invention discloses a semi-automatic electric arc welding device for bedstead machining, and relates to the technical field of electric arc welding, the semi-automatic electric arc welding device comprises a cushion block and a control module, a support is fixedly connected to the upper side of the cushion block, and a supporting plate is fixedly connected to the upper side of the support; limiting strips are fixedly connected to the front side of the upper surface of the supporting plate and the rear side of the upper surface of the supporting plate, a power output module is arranged on the upper side of the support, a moving module is arranged on the power output module, a transverse moving module is arranged in the middle of the moving module, and a lifting module is arranged on the front side of the transverse moving module; by arranging a positioning mechanism composed of a first motor, a second motor, a two-way screw, a sliding block and a clamping rod, the positioning mechanism can automatically move to the position below a skeleton and drive the clamping rod to clamp the skeleton from the two sides, and therefore the positioning mechanism can automatically move to the position below the skeleton; the practicability is high; and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of arc welding technology, specifically to a semi-automatic arc welding device for bed frame processing. Background Technology

[0002] As the core furniture component supporting the mattress, the structural strength and durability of the bed frame directly affect the product's lifespan and user experience. In the manufacturing of metal bed frames, welding is a crucial process, determining the quality of the connections between main beams and between the main beams and the supporting frame. Currently, the industry generally uses the following production methods for welding rectangular frame bed frames: Manual welding: Operators hold welding guns and rely on experience and visual inspection to weld each connection point of the bed frame in turn. This method is labor-intensive and inefficient. Semi-automatic welding with simple tooling: Some companies use welding platforms with simple positioning blocks. Workers place the main beam of the bed frame on the platform, fix it initially with a few clamps, and then weld it with a robotic arm or semi-automatic welding machine. This method still has the following defects: Insufficient positioning accuracy: The simple positioning blocks can only roughly limit the main beam and cannot effectively resist the deformation and displacement of the workpiece caused by thermal stress during the welding process, resulting in welding size deviation and affecting the squareness of the product. The positioning of the frame depends on manual labor: When welding the frame, the position and angle correction are entirely done manually. Workers need to repeatedly measure and adjust to ensure that the frame is perpendicular to the main beam. This process is tedious and time-consuming, and is very easy to cause positioning errors due to visual fatigue or operational negligence, resulting in defective products. Lack of dynamic pressure compensation: Existing tooling and fixtures are mostly statically fixed, unable to apply dynamic lateral pressure during the critical stage of weld pool formation. Without this pressure, the molten metal may not be evenly distributed on the joint surface, easily leading to defects such as incomplete welds and undercut, affecting the fatigue strength of the joint; Therefore, there is an urgent need in this field for a method that can quickly and reliably clamp the main beam of the bed frame, accurately and efficiently automate the positioning of multiple rows of frames, and provide necessary stability assurance and quality enhancement measures during the welding process, thereby significantly improving production efficiency and providing good operational flexibility while ensuring welding quality and consistency. Summary of the Invention

[0003] The purpose of this invention is to provide a semi-automatic arc welding device for bed frame processing, so as to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a semi-automatic arc welding device for bed frame processing, comprising a pad and a control module, wherein a bracket is fixedly connected to the upper side of the pad, a support plate is fixedly connected to the upper side of the bracket, and limit strips are fixedly connected to the front side of the upper surface and the rear side of the upper surface of the support plate, a power output module is provided on the upper side of the bracket, a moving module is provided on the power output module, a transverse moving module is provided in the middle of the moving module, a lifting module is provided in front of the transverse moving module, a deflection module is provided in front of the lifting module, and a welding module is provided below the deflection module; The side wall of the bracket is also provided with a pressing mechanism, and the lower side of the support plate is provided with a positioning mechanism. The extrusion mechanism includes a connecting assembly and a pressure bar on the connecting assembly, the lower end of which is used to extrude and fix the bed frame. The positioning mechanism includes a transmission assembly and a movable clamping rod on the transmission assembly, the clamping rod being used to clamp and position the slatted frame.

[0005] According to the above technical solution, the power output module is electrically connected to the control module, and the power output module is used to drive the moving module to slide back and forth. The moving module is electrically connected to the control module, and the moving module is used to drive the lateral moving module to slide left and right. The lifting module is electrically connected to the control module, and the lifting module is used to drive the deflection module to rise and fall relative to the lateral moving module. The deflection module and the welding module are both electrically connected to the control module, and the deflection module can drive the welding module to rotate.

[0006] According to the above technical solution, the upper side of the bracket is provided with several support plates, which do not contact each other, and there is a gap between adjacent support plates that runs vertically through each other. The two limiting strips on the upper side of the support plates are parallel to each other.

[0007] According to the above technical solution, the connecting component includes a fixing block, the outer wall of the fixing block is fixedly connected to the side wall of the bracket, a movable frame is slidably connected to the upper side of the fixing block, the movable frame is an inverted L-shaped structure, a threaded hole is opened on the upper side of the movable frame, the inner wall of the threaded hole is threadedly connected to the middle of the outer wall of the pressure rod, and a two-way ratchet wrench is provided at the upper end of the pressure rod.

[0008] According to the above technical solution, several sets of compression mechanisms are symmetrically arranged on the left and right sides of the side wall of the bracket, and the upper ends of several movable frames extend to the upper side of the support plate, and a rubber pad is provided on the lower side of the pressure rod.

[0009] According to the above technical solution, a mounting frame is fixedly connected to the outer side wall of the bracket, a hydraulic telescopic rod is fixedly connected to the upper side of the mounting frame, a support rod is fixedly connected to the output end of the hydraulic telescopic rod, and the other end of the support rod is fixedly connected to the outer wall of the movable frame.

[0010] According to the above technical solution, the hydraulic telescopic rod is electrically connected to the control module, and the hydraulic telescopic rod is used to apply pressure to the side of the moving frame away from the middle of the support.

[0011] According to the above technical solution, the transmission assembly includes two first motors. The outer wall of the first motor is fixedly connected to the lower side of the outer wall of the bracket. A threaded rod is fixedly connected to the output end of the first motor. A synchronization plate is threadedly connected to the outer wall of the threaded rod. A second motor is fixedly connected to the upper side of the synchronization plate. A bidirectional screw is fixedly connected to the output end of the second motor. Two sliders are provided on the outer wall of the bidirectional screw. The two sliders are threadedly connected to the front and rear sides of the outer wall of the bidirectional screw, respectively. The lower side of each slider is slidably connected to the upper side of the outer wall of the synchronization plate. A clamping rod is hinged to the upper side of each slider by a torsion spring. The clamping rod is located in the gap between the support plates. A stop bar is fixedly connected to the upper surface of the synchronization plate on the side of the clamping rod away from the other clamping rod.

[0012] According to the above technical solution, there are two first motors. The first motors are electrically connected to the control module and are used to drive the synchronous plate to move back and forth. The output ends of the two first motors are provided with threaded rods. The lower left and lower right parts of the synchronous plate are respectively threaded to the outer walls of the two threaded rods. The threaded structure of the outer wall of the bidirectional screw is symmetrically arranged. The second motor is electrically connected to the control module and is used to drive the two sliders to move in opposite directions.

[0013] According to the above technical solution, each of the two sliders is provided with a protruding structure for supporting the clamping rod on the side away from each other. The stop bar is located in the middle of the clamping rod and is located on the moving path of the clamping rod. The stop bar is used to squeeze the clamping rod to deflect it during the movement of the clamping rod.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention, through the extrusion mechanism consisting of a movable frame, a pressure bar, and a two-way ratchet wrench, allows the operator to quickly position the main beam and then manually rotate the wrench to move the pressure bar down to press the workpiece. This achieves the goal of automatically completing the entire welding process with simple manual assistance, significantly reducing manual intervention and improving production efficiency.

[0015] By incorporating the hydraulic telescopic rod and the connected movable frame and pressure rod, the control module can activate the hydraulic rod in the latter half of welding a single weld point, pushing the pressure rods on both sides of the weld point to apply lateral extrusion force to the workpiece. This achieves a more uniform distribution of the weld pool under pressure, effectively improving the weld quality and structural strength.

[0016] By setting up a positioning mechanism consisting of a first motor, a second motor, a bidirectional screw, a slider, and a clamping rod, the mechanism can automatically move to the bottom of the frame and drive the clamping rod to clamp it from both sides, thereby achieving automatic correction and ensuring that the frame is vertically positioned with the main beam, completely avoiding product size errors caused by manual placement errors or skewing.

[0017] By incorporating the lateral pressure provided by the extrusion mechanism and the clamping force provided by the positioning mechanism, these two mechanisms can work individually or in combination during the arc welding process to provide stable constraints on the welding area. This effectively resists the minute displacement of the workpiece caused by the contact of the welding torch or thermal stress, ensuring the high stability of the entire welding process and the forming quality of the final product. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the lower structure of the present invention; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the support structure of the present invention; Figure 5 This is a schematic diagram of the extrusion mechanism of the present invention; Figure 6 This is a schematic diagram of the positioning mechanism structure of the present invention; Figure 7 This is an enlarged structural schematic diagram of the positioning mechanism of the present invention; In the diagram: 1. Pad; 2. Bracket; 3. Support plate; 4. Limiting strip; 5. Power output module; 6. Moving module; 7. Lateral movement module; 8. Lifting module; 9. Deflection module; 10. Welding module; 11. Extrusion mechanism; 12. Positioning mechanism; 101. Fixing block; 102. Moving frame; 103. Pressure rod; 104. Two-way ratchet wrench; 105. Mounting bracket; 106. Hydraulic telescopic rod; 107. Support rod; 201. First motor; 202. Threaded rod; 203. Synchronizing plate; 204. Second motor; 205. Two-way screw; 206. Slider; 207. Clamping rod; 208. Stop bar. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figure 1-4 The present invention provides a technical solution: a semi-automatic arc welding device for bed frame processing, including a pad 1 and a control module. A bracket 2 is fixedly connected to the upper side of the pad 1, and a support plate 3 is fixedly connected to the upper side of the bracket 2. Limiting strips 4 are fixedly connected to the front side and the rear side of the upper surface of the support plate 3. A power output module 5 is provided on the upper side of the bracket 2. A moving module 6 is provided on the power output module 5. A transverse moving module 7 is provided in the middle of the moving module 6. A lifting module 8 is provided in front of the transverse moving module 7. A deflection module 9 is provided in front of the lifting module 8. A welding module 10 is provided below the deflection module 9. The side wall of the bracket 2 is also provided with a pressing mechanism 11, and the lower side of the support plate 3 is provided with a positioning mechanism 12. The power output module 5 is electrically connected to the control module. The power output module 5 is used to drive the moving module 6 to slide back and forth. The moving module 6 is electrically connected to the control module. The moving module 6 is used to drive the transverse module 7 to slide left and right. The lifting module 8 is electrically connected to the control module. The lifting module 8 is used to drive the deflection module 9 to rise and fall relative to the transverse module 7. The deflection module 9 and the welding module 10 are both electrically connected to the control module. The deflection module 9 can drive the welding module 10 to rotate. Several support plates 3 are provided on the upper side of the bracket 2. The support plates 3 do not contact each other, and there is a gap between two adjacent support plates 3 that runs vertically through each other. The two limit strips 4 on the upper side of the support plate 3 are parallel to each other. In the implementation of this welding device, firstly, the operator places two main beams, which serve as the outer frame, parallel to each other on the left side of several independent support plates 3. The front and rear main beams are then pressed tightly against the two parallel limiting strips 4 fixed to the support plates 3, thus initially forming a regular rectangular frame. Next, the inverted L-shaped movable frame 102 is manually moved to a suitable position above the main beams, and the pressure rod 103 is rotated using a two-way ratchet wrench 104, pressing the rubber pad at its lower end firmly onto the main beams, thus quickly fixing the frame. Subsequently, the frame slats are placed one by one... Once the pre-arranged positions between the left and right main beams are ready, the system is started. The control module will coordinate the operation of the power output module 5, the movement module 6, the lateral movement module 7, the lifting module 8, and the deflection module 9 according to the preset program, driving the welding gun of the welding module 10 to move to each connection point between the main beams and the connection point between the main beam and the frame for automatic welding. The core effect of this embodiment is that after simple manual feeding and clamping, the welding process is completely completed automatically by the device, which greatly reduces manual intervention and improves production efficiency and standardization.

[0021] Example 2: Please refer to Figure 1-5 Based on Embodiment 1, the present invention provides a technical solution: the extrusion mechanism 11 includes a connecting assembly and a pressure rod 103 on the connecting assembly. The lower end of the pressure rod 103 is used to extrude and fix the bed frame. The connecting assembly includes a fixing block 101. The outer wall of the fixing block 101 is fixedly connected to the side wall of the support 2. A movable frame 102 is slidably connected to the upper side of the fixing block 101. The movable frame 102 has an inverted L-shaped structure. A threaded hole is opened on the upper side of the movable frame 102. The inner wall of the threaded hole is threadedly connected to the middle of the outer wall of the pressure rod 103. A two-way ratchet wrench 104 is provided at the upper end of the pressure rod 103. The side wall of the support 2... Several sets of extrusion mechanisms 11 are symmetrically arranged on the left and right sides, and the upper ends of several movable frames 102 extend to the upper side of the support plate 3. A rubber pad is provided on the lower side of the pressure rod 103. A mounting frame 105 is fixedly connected to the outer wall of the bracket 2. A hydraulic telescopic rod 106 is fixedly connected to the upper side of the mounting frame 105. A support rod 107 is fixedly connected to the output end of the hydraulic telescopic rod 106. The other end of the support rod 107 is fixedly connected to the outer wall of the movable frame 102. The hydraulic telescopic rod 106 is electrically connected to the control module. The hydraulic telescopic rod 106 is used to apply pressure to the side of the movable frame 102 away from the middle of the bracket 2. This embodiment focuses on how to improve welding quality by applying lateral pressure during the welding process. When the welding module 10 welds a certain weld point, especially in the latter half of the welding process, the control module will activate the hydraulic telescopic rod 106 at a specific position. The hydraulic telescopic rod 106 pushes the moving frame 102 on both sides of the weld point through the support rod 107. The moving frame 102 then applies an inward squeezing force to the bed frame component at the weld joint. This dynamic pressure can make the components to be welded more closely contacted, which helps to make the liquid metal more evenly distributed under pressure after the arc generates a molten pool, thereby effectively reducing welding defects, making the weld point fuller and stronger, and significantly improving the consistency and quality of the weld joint.

[0022] Example 3: Please refer to Figure 1-7 Based on Embodiments 1 and 2, the present invention provides the following technical solution: The positioning mechanism 12 includes a transmission assembly and a movable clamping rod 207 on the transmission assembly. The clamping rod 207 is used to clamp and position the slatted frame. The transmission assembly includes two first motors 201. The outer wall of the first motor 201 is fixedly connected to the lower side of the outer wall of the bracket 2. A threaded rod 202 is fixedly connected to the output end of the first motor 201. A synchronization plate 203 is threadedly connected to the outer wall of the threaded rod 202. A second motor 204 is fixedly connected to the upper side of the synchronization plate 203. A bidirectional screw 205 is fixedly connected to the output end of the second motor 204. Two sliders 206 are provided on the outer wall of the bidirectional screw 205. The two sliders 206 are threadedly connected to the front and rear sides of the outer wall of the bidirectional screw 205, respectively. The lower sides of the two sliders 206 are slidably connected to the upper side of the outer wall of the synchronization plate 203. The upper sides of the two sliders 206 are hinged to the clamping rod 207 by a torsion spring. The clamping rod 207 is located in the space between the support plates 3. In the gap, and the upper surface of the synchronization plate 203 is fixedly connected to the stop bar 208 on the side of the clamping rod 207 away from the other clamping rod 207. There are two first motors 201. The first motors 201 are electrically connected to the control module. The first motors 201 are used to drive the synchronization plate 203 to move back and forth. The output ends of the two first motors 201 are provided with threaded rods 202. The lower left and lower right parts of the synchronization plate 203 are respectively threaded to the outer walls of the two threaded rods 202. The threaded structure of the outer wall of the bidirectional screw 205 is symmetrically arranged. The second motor 204 is electrically connected to the control module. The second motor 204 is used to drive the two sliders 206 to move in opposite directions. The two sliders 206 are provided with a protruding structure for supporting the clamping rod 207 on the side away from each other. The stop bar 208 is located in the middle of the clamping rod 207 and is located on the moving path of the clamping rod 207. The stop bar 208 is used to squeeze the clamping rod 207 to deflect it during the movement of the clamping rod 207. Before welding the next frame after welding one frame, to ensure that each frame is perpendicular to the main beam and in the correct preset position, the device activates the positioning mechanism 12. First, the control module instructs two first motors 201 to rotate synchronously, driving two threaded rods 202, so that the entire synchronous plate 203, carrying the mechanism on it, moves to the bottom of the target frame. Then, the second motor 204 starts, driving the bidirectional screw 205 to rotate, so that the two sliders 206 move closer to each other. When the clamping rod 207 on the slider 206 is hinged to the torsion spring and moves towards the middle, it remains upright due to the support of the slider 206 on the outside, thus clamping the frame from both sides and correcting it to a position that is strictly perpendicular to the main beam. This automatic positioning process eliminates product size errors and quality problems caused by manual misplacement or skew.

[0023] Example 4: Please refer to Figure 1 Based on Embodiments 1, 2, and 3, this invention provides the following technical solution: During arc welding, the welding torch is extremely close to the bed frame structure, sometimes even in slight contact. Any minute displacement can affect the welding quality. This device addresses this problem through two mechanisms. First, as in Embodiment 2, a stable pressure can be applied to both sides of the welding area via the extrusion mechanism 11 during welding to resist deformation that may be caused by welding thermal stress. Second, when welding the slat frame, the clamping function of the positioning mechanism 12 can be utilized, that is, the two clamping rods are maintained throughout the entire process of driving the welding module 10 to weld the slat frame. 207 is in a clamped state, thus firmly fixing the slat frame and the main beam together to form a rigid whole, effectively preventing any slight movement under the action of the welding gun. After welding is completed, the second motor 204 reverses, driving the two sliders 206 and the clamping rod 207 to move away from each other. On the path of the clamping rod 207 retraction, it will contact the fixed stop bar 208. Under the obstruction of the stop bar 208, the clamping rod 207 overcomes the torsion spring force and deflects downward, retracting into the gap below the support plate 3, making room for welding the next station. This design perfectly balances stable positioning during welding and smooth switching between processes.

[0024] This application provides a semi-automatic arc welding device for bed frame processing, including a pad 1, a control module, and a support plate 3 and a limiting strip 4 mounted on a bracket 2. The device uses a pressing mechanism 11, composed of a moving frame 102, a pressure rod 103, and a two-way ratchet wrench 104, to press the main beam of the bed frame from above. A positioning mechanism 12, composed of a first motor 201, a synchronization plate 203, a second motor 204, a two-way screw 205, a slider 206, and a clamping rod 207, clamps and corrects the slatted frame from both sides to ensure that it is perpendicular to the main beam. During welding, the control module, in coordination with the power output module 5, the moving module 6, the lateral movement module 7, the lifting module 8, and the deflection module 9, drives the welding module 10 to move precisely to each welding point. During the process, the hydraulic telescopic rod 106 can push the pressing mechanism 11 to apply lateral pressure to the welding point, making the molten pool evenly distributed. This invention realizes the integrated operation of rapid workpiece fixing, automatic positioning, and high-quality welding during bed frame welding, significantly improving production efficiency and product consistency.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A semi-automatic arc welding device for bed frame processing, comprising a pad (1) and a control module, characterized in that: A bracket (2) is fixedly connected to the upper side of the pad (1), and a support plate (3) is fixedly connected to the upper side of the bracket (2). Limiting strips (4) are fixedly connected to the front side of the upper surface and the rear side of the upper surface of the support plate (3). A power output module (5) is provided on the upper side of the bracket (2). A moving module (6) is provided on the power output module (5). A transverse moving module (7) is provided in the middle of the moving module (6). A lifting module (8) is provided in front of the transverse moving module (7). A deflection module (9) is provided in front of the lifting module (8). A welding module (10) is provided on the lower side of the deflection module (9). The side wall of the bracket (2) is also provided with a pressing mechanism (11), and the lower side of the support plate (3) is provided with a positioning mechanism (12). The extrusion mechanism (11) includes a connecting assembly and a pressure rod (103) on the connecting assembly, the lower end of which is used to extrude and fix the bed frame; The positioning mechanism (12) includes a transmission assembly and a movable clamping rod (207) on the transmission assembly, the clamping rod (207) being used to clamp and position the slatted frame.

2. The semi-automatic arc welding device for bed frame processing according to claim 1, characterized in that: The power output module (5) is electrically connected to the control module. The power output module (5) is used to drive the moving module (6) to slide back and forth. The moving module (6) is electrically connected to the control module. The moving module (6) is used to drive the lateral module (7) to slide left and right. The lifting module (8) is electrically connected to the control module. The lifting module (8) is used to drive the deflection module (9) to rise and fall relative to the lateral module (7). The deflection module (9) and the welding module (10) are both electrically connected to the control module. The deflection module (9) can drive the welding module (10) to rotate.

3. The semi-automatic arc welding device for bed frame processing according to claim 2, characterized in that: The bracket (2) is provided with several support plates (3) on its upper side. The support plates (3) do not contact each other, and there is a gap between two adjacent support plates (3) that runs vertically through each other. The two limiting strips (4) on the upper side of the support plate (3) are parallel to each other.

4. The semi-automatic arc welding device for bed frame processing according to claim 3, characterized in that: The connecting assembly includes a fixing block (101), the outer wall of which is fixedly connected to the side wall of the bracket (2), and a movable frame (102) is slidably connected to the upper side of the fixing block (101). The movable frame (102) has an inverted L-shaped structure, and a threaded hole is provided on the upper side of the movable frame (102). The inner wall of the threaded hole is threadedly connected to the middle of the outer wall of the pressure rod (103). A two-way ratchet wrench (104) is provided at the upper end of the pressure rod (103).

5. The semi-automatic arc welding device for bed frame processing according to claim 4, characterized in that: The support (2) has several sets of compression mechanisms (11) symmetrically arranged on the left and right sides of its sidewalls, and the upper ends of several movable frames (102) extend to the upper side of the support plate (3). The lower side of the pressure rod (103) is provided with a rubber pad.

6. The semi-automatic arc welding device for bed frame processing according to claim 5, characterized in that: A mounting bracket (105) is fixedly connected to the outer wall of the bracket (2), and a hydraulic telescopic rod (106) is fixedly connected to the upper side of the mounting bracket (105). A support rod (107) is fixedly connected to the output end of the hydraulic telescopic rod (106), and the other end of the support rod (107) is fixedly connected to the outer wall of the movable frame (102).

7. A semi-automatic arc welding device for bed frame processing according to claim 6, characterized in that: The hydraulic telescopic rod (106) is electrically connected to the control module and is used to apply pressure to the side of the moving frame (102) away from the middle of the support (2).

8. A semi-automatic arc welding device for bed frame processing according to claim 7, characterized in that: The transmission assembly includes two first motors (201). The outer wall of the first motor (201) is fixedly connected to the lower side of the outer wall of the bracket (2). A threaded rod (202) is fixedly connected to the output end of the first motor (201). A synchronization plate (203) is threadedly connected to the outer wall of the threaded rod (202). A second motor (204) is fixedly connected to the upper side of the synchronization plate (203). A bidirectional screw (205) is fixedly connected to the output end of the second motor (204). The outer wall of the bidirectional screw (205) is provided with... Two sliders (206) are threaded to the front and rear sides of the outer wall of the bidirectional screw (205) respectively. The lower side of each slider (206) is slidably connected to the upper side of the outer wall of the synchronization plate (203). The upper side of each slider (206) is hinged with a clamping rod (207) by a torsion spring. The clamping rod (207) is located in the gap between the support plates (3). The upper surface of the synchronization plate (203) is fixedly connected with a stop bar (208) on the side of the clamping rod (207) away from the other clamping rod (207).

9. A semi-automatic arc welding device for bed frame processing according to claim 8, characterized in that: There are two first motors (201). The first motor (201) is electrically connected to the control module. The first motor (201) is used to drive the synchronous plate (203) to move back and forth. The output ends of the two first motors (201) are provided with threaded rods (202). The lower left side and the lower right side of the synchronous plate (203) are respectively threaded to the outer wall of the two threaded rods (202). The threaded structure of the outer wall of the bidirectional screw (205) is symmetrically arranged front and back. The second motor (204) is electrically connected to the control module. The second motor (204) is used to drive the two sliders (206) to move in opposite directions.

10. A semi-automatic arc welding device for bed frame processing according to claim 9, characterized in that: Both sliders (206) have protruding structures on the sides away from each other to support the clamping rod (207). The stop bar (208) is located in the middle of the clamping rod (207) and is located on the moving path of the clamping rod (207). The stop bar (208) is used to squeeze the clamping rod (207) to deflect it during the movement of the clamping rod (207).

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