Fixing device for combined welding of iron art frame
By automatically positioning and synchronously welding components such as the upper and lower fixed frames, the problem of multiple adjustments during the welding process of wrought iron frames is solved, achieving an efficient and stable welding process and reducing labor costs and production cycle.
Patent Information
- Application Number
- CN202511959597.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-24
- Publication Date
- 2026-02-24
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing wrought iron frame welding process requires multiple adjustments to the orientation, resulting in long welding time and unstable welding quality. Furthermore, the support frame needs to be manually separated and fixed after welding, which increases waiting time.
The system employs components such as an upper fixed frame, a lower fixed frame, a lower conveyor belt, and a rear lifting support to achieve automatic positioning and synchronous welding of the elliptical ring steel pipe and the central steel pipe. The cooperation between the upper positioning frame and the upper positioning frame ensures that the steel pipes are in the same position, avoiding vibration deformation. Continuous welding is achieved using an automatic welding machine, reducing manual operation.
It shortens positioning and adjustment time, improves welding efficiency, ensures welding quality, reduces manual operation, lowers production costs, and enhances process continuity and production cycle.
Smart Images
Figure CN121551965A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of welding fixture technology, and in particular to a fixing device for welding wrought iron frames. Background Technology
[0002] Wrought iron frames are frame structures made of materials such as low-carbon steel through processes such as cutting, bending, and welding. Wrought iron frames combine functionality and decoration and are widely used in household products such as wrought iron shelves, flower stands, and coat racks.
[0003] The existing wrought iron frame welding process requires first positioning the elliptical ring, then splicing the central steel pipes and welding them, and then flipping the elliptical ring over to splice and weld the steel pipes on the other side. This requires manual adjustment of the position multiple times, making the process cumbersome and prone to deviations due to secondary positioning, which require correction. The overall processing time is long, and after welding, personnel need to manually separate the finished wrought iron frame from the welding support, further increasing the waiting time during the welding process. Summary of the Invention
[0004] This invention provides a fixing device for welding wrought iron frames. An upper fixing frame and an upper positioning frame allow two elliptical ring steel pipe frames to be placed alternately, while an upper positioning frame and a lower positioning frame place the middle steel pipe. This allows the elliptical ring steel pipe and the middle steel pipe to be directly combined into a three-dimensional structure of the finished product, shortening the preparation time for positioning, adjusting, and fixing components. The upper fixing frame rotates around the connection point between the upper fixing frame and the rear lifting support. The upper fixing frame and the elliptical ring steel pipe are lifted synchronously, moving the elliptical ring steel pipe away from the lower conveyor belt, enabling welding work on the contact area between the elliptical ring steel pipe and the lower conveyor belt. This ensures sequential welding completion, eliminating the need for manual handling, flipping, adjustment, and waiting.
[0005] This invention provides a fixing device for welding wrought iron frames, specifically including an upper fixing frame, a lower fixing frame, a lower conveyor belt, and a rear lifting bracket. The lower fixing frame is located below the upper fixing frame, and the lower conveyor belt is located below the lower fixing frame. The rear lifting bracket is rotatably connected to the rear side of the upper fixing frame. An upper limit boss protrudes from the top of the upper fixing frame. The top of the upper fixing frame fits against the upper part of an elliptical ring-shaped steel pipe frame. The upper limit boss restricts the horizontal position of the upper part of the elliptical ring-shaped steel pipe frame. The upper fixing frame and the upper connecting slide rod are slidably connected horizontally. Upper positioning frames are slidably connected at intervals on both sides of the upper connecting slide rod and positioned by tightening screws. The upper positioning frames are used to place the connecting steel pipes between the steel pipe frames. The number and position of the upper positioning frames are adjusted according to the number and spacing of the steel pipes. An upper telescopic cylinder is fixedly connected to the middle of the upper fixing frame. An upper limit frame is fixedly connected to the front side of the upper connecting slide rod. Two elliptical ring-shaped steel pipe frames are placed at intervals on the top of the upper fixing frame and the upper limit frame.
[0006] Furthermore, a lower connecting slide is fixedly connected to the middle of the lower fixed frame. The lower part of the lower connecting slide has an L-shaped structure to limit the lower side of the elliptical ring steel pipe frame. Lower positioning frames are slidably connected to both sides of the lower connecting slide and positioned by tightening screws. The number and position of the lower positioning frames are adjusted according to the number and spacing of the steel pipes. A rear connecting slide is slidably connected to the rear side of the lower connecting slide in the horizontal direction. A middle connecting rod is rotatably connected to the middle connecting slide with a pin shaft. The upper end of the middle connecting rod and the lower end of the middle threaded rod are threadedly connected.
[0007] Furthermore, the telescopic rod of the upper telescopic cylinder is fixedly connected to the upper connecting slide rod, the lower fixed frame and the upper limit frame are slidably connected in the vertical direction, and the rear connecting slide and the upper fixed frame are slidably connected in the vertical direction.
[0008] Furthermore, the upper end of the threaded rod is threadedly connected to another connecting rod. The connecting rod at the upper end of the threaded rod and the upper connecting slide are rotatably connected by a pin. When the upper limit frame moves horizontally close to the upper fixed frame, the upper limit frame pulls the connecting rod and the threaded rod to tilt and flip in the vertical direction. The connecting rod and the threaded rod pull the lower fixed frame and the lower connecting slide downward to the elliptical annular steel pipe frame at the top of the lower conveyor belt.
[0009] Furthermore, the lower conveyor belt and the side support are connected and tightened by a rotating shaft. The lower part of the side support is fixedly connected to a lower connecting slide, and the middle part of the lower connecting slide is rotatably connected to an electric screw. The drive motor at the tail end of the electric screw is fixedly connected to the lower connecting slide.
[0010] Furthermore, the middle pin of the rear lifting bracket is rotatably connected to an upper tilting telescopic cylinder, and the lower part of the rear lifting bracket is slidably connected to a lower horizontal slide in the vertical direction, with a lower lifting telescopic cylinder fixedly connected to the middle of the lower horizontal slide.
[0011] Furthermore, the telescopic rod of the upper tilting telescopic cylinder and the upper fixed frame are rotatably connected. When the upper tilting telescopic cylinder retracts, it causes the upper fixed frame to tilt around the rotatable connection between the upper fixed frame and the rear lifting bracket. The upper fixed frame simultaneously drives the elliptical ring steel pipe frame to lift. The telescopic rod of the lower lifting telescopic cylinder is fixedly connected to the rear lifting bracket. When the upper limit frame moves horizontally away from the upper fixed frame, the upper limit frame pulls the middle connecting rotating rod and the middle threaded rod to tilt and tilt in the vertical direction. The middle connecting rotating rod and the middle threaded rod work together to pull the lower fixed frame and the lower connecting slide to move upward and approach the upper limit frame.
[0012] Furthermore, the lower horizontal slide and the lower connecting slide are horizontally slidably connected, and the middle part of the lower horizontal slide is threadedly connected to the electric screw. Then, the electric screw drives the lower horizontal slide to move horizontally, and the upper fixed frame and the lower fixed frame move horizontally away from the finished ironwork frame in sync. The upper fixed frame and the lower fixed frame are no longer inside the finished ironwork frame.
[0013] This invention provides a fixing device for welding wrought iron frames, which has the following advantages: The upper fixed frame and the upper positioning frame allow two elliptical ring steel pipe frames to be placed alternately, while the upper positioning frame and the lower positioning frame place the middle steel pipe. This allows the elliptical ring steel pipe and the middle steel pipe to be directly combined into a three-dimensional structure of the finished product, shortening the preparation time for positioning, adjustment, and fixing of components. It also eliminates the need for multiple adjustments to the orientation and sequential combination of steel pipes during welding, thus improving welding efficiency.
[0014] The upper telescopic cylinder pulls the upper limit frame towards the upper fixed frame. The upper limit frame and the upper fixed frame clamp the elliptical ring steel pipe frame and steel pipe in the middle, ensuring that the elliptical ring steel pipe frame and steel pipe are in the same position. This avoids the elliptical ring steel pipe frame from being easily displaced due to vibration and high temperature deformation during welding, which would lead to poor welding quality and ensure consistent welding quality.
[0015] The upper fixed frame rotates around the connection between the upper fixed frame and the rear lifting support. The upper fixed frame and the elliptical ring steel pipe are lifted synchronously, and the elliptical ring steel pipe moves away from the lower conveyor belt, so as to realize the welding work of the part where the elliptical ring steel pipe and the lower conveyor belt are in contact. This ensures that the welding is completed in sequence, eliminating the need for manual handling, flipping and adjustment, shortening the welding waiting time, improving the continuity of the process, and further shortening the production cycle.
[0016] After the wrought iron frame is welded, the upper limit frame moves away from the upper fixed frame, while the lower fixed frame moves up and closer to the upper fixed frame. The upper and lower fixed frames move down and horizontally away from the finished wrought iron frame along with the rear lifting bracket. The lower conveyor belt realizes the transportation of the finished wrought iron frame, eliminating the need for personnel to handle the finished wrought iron frame and reducing labor costs. Attached Figure Description
[0017] To more clearly illustrate the technical solution of the present invention, the accompanying drawings will be briefly described below.
[0018] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.
[0019] In the attached diagram: Figure 1 A structural schematic diagram of the iron coat hanger in the fixed state of this application is shown; Figure 2 A schematic diagram of the overall structure of this application is shown; Figure 3 A schematic diagram of the structure of the rear lifting bracket of this application is shown; Figure 4 A schematic diagram of the upper limit frame of this application is shown; Figure 5 A schematic diagram of the lower connecting carriage of this application is shown; Figure 6 A schematic diagram of the lower fixing frame of this application is shown; Figure 7 A schematic diagram of the upper fixing frame of this application is shown; Figure 8 A schematic diagram of the structure of the present application in its separated state is shown, comprising the upper fixed frame, the lower fixed frame, the lower conveyor belt, and the rear lifting support.
[0020] Figure label: 1. Upper fixed frame; 101. Upper limit boss; 102. Upper connecting slide rod; 103. Upper positioning frame; 104. Upper telescopic cylinder; 105. Upper limit frame; 2. Lower fixed frame; 201. Lower connecting slide; 202. Lower positioning frame; 203. Rear connecting slide; 204. Middle connecting rotating rod; 205. Middle threaded rod; 3. Lower conveyor belt; 301. Side support; 302. Lower connecting slide; 303. Electric screw; 4. Rear lifting support; 401. Upper tilting telescopic cylinder; 402. Lower horizontal slide; 403. Lower lifting telescopic cylinder. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0022] Example 1: Please refer to... Figures 1 to 8 : This invention proposes a fixing device for welding wrought iron frames, including an upper fixing frame 1, a lower fixing frame 2, a lower conveyor belt 3, and a rear lifting support 4. The upper fixing frame 1 has a protruding upper limit boss 101 on its top. The top of the upper fixing frame 1 is attached to the upper part of an elliptical ring-shaped steel pipe frame. The upper limit boss 101 restricts the horizontal position of the upper part of the elliptical ring-shaped steel pipe frame. The upper fixing frame 1 and the upper connecting slide rod 102 are slidably connected horizontally. Upper positioning frames 103 are slidably connected at intervals on both sides of the upper connecting slide rod 102 and positioned by tightening screws. The upper positioning frames 103 are used to arrange the connecting steel pipes between the steel pipe frames. 03. Adjust the quantity and position according to the number and spacing of the steel pipes. An upper telescopic cylinder 104 is fixedly connected to the middle of the upper fixed frame 1. An upper limit frame 105 is fixedly connected to the front side of the upper connecting slide rod 102. The upper fixed frame 1 and the upper limit frame 105 are arranged with two elliptical ring-shaped steel pipe frames spaced apart at their tops. A lower fixed frame 2 is set below the upper fixed frame 1. A lower connecting slide 201 is fixedly connected to the middle of the lower fixed frame 2. The lower connecting slide 201 has an L-shaped structure at its lower part to limit the lower side of the elliptical ring-shaped steel pipe frame. Lower positioning frames 202 are slidably connected to both sides of the lower connecting slide 201 and positioned by tightening screws. The number and position of the frame 202 are adjusted according to the number and spacing of the steel pipes. A rear connecting slide 203 is horizontally slidably connected to the rear side of the lower connecting slide 201. A central connecting rod 204 is rotatably connected to the middle pin of the lower connecting slide 201. The upper end of the central connecting rod 204 is threadedly connected to the lower end of the central threaded rod 205. The telescopic rod of the upper telescopic cylinder 104 is fixedly connected to the upper connecting slide 102. The lower fixed frame 2 and the upper limit frame 105 are vertically slidably connected. The rear connecting slide 203 and the upper fixed frame 1 are vertically slidably connected. The lower fixed frame 2 moves horizontally synchronously with the upper limit frame 105. A [further details about the lower fixed frame 2 are missing]. A lower conveyor belt 3 is provided, and the lower conveyor belt 3 and the side support 301 are connected and tightened by a rotating shaft. The lower part of the side support 301 is fixedly connected to a lower connecting slide 302, and the middle part of the lower connecting slide 302 is rotatably connected to an electric screw 303. The drive motor at the tail end of the electric screw 303 is fixedly connected to the lower connecting slide 302. The rear side of the upper fixed frame 1 is rotatably connected to a rear lifting support 4, and the middle part of the rear lifting support 4 is rotatably connected to an upper tilting telescopic cylinder 401 with a pin. The lower part of the rear lifting support 4 is vertically slidably connected to a lower horizontal slide 402, and the middle part of the lower horizontal slide 402 is fixedly connected to a lower lifting telescopic cylinder 403.
[0023] In this embodiment, the upper end of the threaded rod 205 is threadedly connected to another connecting rod 204. The connecting rod 204 and the upper connecting slide rod 102 are rotatably connected by a pin. When the upper limit frame 105 moves horizontally closer to the upper fixed frame 1, the upper limit frame 105 pulls the connecting rod 204 and the threaded rod 205 to tilt and flip in the vertical direction. The connecting rod 204 and the threaded rod 205 pull the lower fixed frame 2 and the lower connecting slide 201 downwards closer to the elliptical ring steel pipe frame at the top of the lower conveyor belt 3, thereby fixing the elliptical ring steel pipe frame to the lower fixed frame 2. This ensures that the splicing position of the elliptical ring and the middle steel pipe is completely aligned and combined to form a three-dimensional structure of the finished iron clothes hanger. This eliminates the need for multiple adjustments to the orientation and sequential placement of steel pipes during welding. The automatic welding machine enables continuous welding of the splicing position, shortening the total welding time and eliminating the need for multiple manual adjustments to the orientation, which are time-consuming.
[0024] In this embodiment, the telescopic rod of the upper tilting telescopic cylinder 401 and the upper fixed frame 1 are rotatably connected by a pin. When the upper tilting telescopic cylinder 401 retracts, it causes the upper fixed frame 1 to tilt around the rotatable connection between the upper fixed frame 1 and the rear lifting bracket 4. The upper fixed frame 1 simultaneously drives the elliptical annular steel pipe frame to lift. The telescopic rod of the lower lifting telescopic cylinder 403 is fixedly connected to the rear lifting bracket 4. When the upper limit frame 105 moves horizontally away from the upper fixed frame 1, the upper limit frame 105 pulls the connecting rotating rod 204 and the threaded rod 205 to tilt and tilt in the vertical direction. The middle connecting rod 204 and the middle threaded rod 205 work together to pull the lower fixed frame 2 and the lower connecting slide 201 upward away from the upper limit frame 105. The lower fixed frame 2 and the lower positioning frame 202 move upward away from the wrought iron frame below. The rear lifting bracket 4 moves downward through the lower lifting telescopic cylinder 403. The upper fixed frame 1 moves downward synchronously with the rear lifting bracket 4 away from the wrought iron frame. Then the electric screw 303 drives the lower horizontal slide 402 to move horizontally. The upper fixed frame 1 and the lower fixed frame 2 move horizontally synchronously away from the finished wrought iron frame. The lower conveyor belt 3 performs automatic unloading.
[0025] In this embodiment, the lower horizontal slide 402 and the lower connecting slide 302 are horizontally slidably connected. The middle part of the lower horizontal slide 402 is threadedly connected to the electric screw 303. Then, the electric screw 303 drives the lower horizontal slide 402 to move horizontally. The upper fixed frame 1 and the lower fixed frame 2 move horizontally away from the finished ironwork frame at the same time. The upper fixed frame 1 and the lower fixed frame 2 are no longer inside the finished ironwork frame and will not hinder the movement of the finished ironwork frame with the lower conveyor belt 3. The lower conveyor belt 3 transports the finished ironwork frame to the next process, realizing automatic unloading and reducing the burden of unloading and handling by personnel.
[0026] In this second embodiment, based on the first embodiment, the rear lifting bracket 4 is directly and fixedly connected to the side bracket 301. The lower horizontal slide 402, the lower lifting telescopic cylinder 403, the lower connecting slide 302 and the electric screw 303 are not installed. This is suitable for production lines where personnel manually load and unload materials, while also reducing the production cost of the device.
[0027] The working principle of this invention is as follows: The upper fixed frame 1 and the upper positioning frame 105 place two elliptical ring steel pipe frames, with the lower side of the elliptical ring steel pipe frames and the top of the lower conveyor belt 3 in contact. The upper positioning frame 103 and the lower positioning frame 202 are arranged in an array at a preset interval. The upper positioning frame 103 and the lower positioning frame 202 quickly position and place the upper and lower steel pipes on both sides between the two elliptical ring steel pipe frames, ensuring that the splicing position of the elliptical ring and the middle steel pipe is completely aligned. The three components are combined to form a three-dimensional structure of the finished iron clothes hanger. This eliminates the need for multiple adjustments to the orientation and sequential placement of steel pipes during welding. It can be used with an automatic welding machine to achieve continuous welding of the splicing position, shorten the total welding time, improve the efficiency of mass production, adapt to the needs of large-scale production, and solve the problem that existing welding requires elliptical ring positioning first, then splicing of the middle steel pipe, step-by-step combination and positioning, and multiple manual adjustments to the orientation, which is time-consuming. The upper telescopic cylinder 104 drives the upper limit frame 105 to move towards the upper fixed frame 1. The upper limit frame 105 and the upper fixed frame 1 form a horizontal clamping force. The lower fixed frame 2 moves horizontally synchronously with the upper limit frame 105, ensuring that the lower fixed frame 2 and the upper limit frame 105 move synchronously to ensure the synchronous vertical displacement of the elliptical ring steel pipe frame. While the lower fixed frame 2 moves horizontally, it presses down on the elliptical ring steel pipe frame. The lower connecting slide 201 and the lower positioning frame 202 press down on the steel pipe at the lower middle position of the two elliptical ring steel pipe frames while the lower fixed frame 2 moves horizontally. The two elliptical ring steel pipe frames are clamped and fixed with the steel pipe in the middle, reducing vibration during welding and reducing the possibility of misalignment or incomplete welding of the elliptical ring and steel pipe due to welding vibration and high temperature deformation. This ensures welding quality, ensures that the welding parameters of all iron frames in a single batch are completely consistent, avoids re-welding and rework due to displacement, and significantly reduces rework losses. After the elliptical ring and the central steel pipe are welded together as a whole and can be moved as a whole, the upper flip telescopic cylinder 401 retracts, causing the upper fixed frame 1 to flip around the rotating connection between the upper fixed frame 1 and the rear lifting bracket 4. The upper fixed frame 1 simultaneously drives the elliptical ring steel pipe frame to lift, so that it is completely separated from the lower conveyor belt 3, exposing the welding surface of the mating part. Welding of all splicing positions can be achieved without manual disassembly, flipping, and repositioning, completely solving the problems of difficult flipping and incomplete coverage. The upper fixed frame 1 and the upper limit frame 105 clamp the elliptical ring steel pipe frame and the central steel pipe, ensuring that the weld gap is maintained and the structure is fixed even away from the lower conveyor belt 3. This avoids the situation where the gap between the elliptical ring steel pipe frame and the central steel pipe loosens during flipping, ensuring that the lower part can be welded immediately after the upper part is welded, without the need for cooling and waiting, shortening the welding waiting time of a single set, improving the continuity of the process, and further shortening the production cycle of a single set. After the wrought iron frame is welded, the upper limit bracket 105 moves in the opposite direction away from the upper fixed bracket 1 to loosen the clamping of the wrought iron frame. While the upper limit bracket 105 moves horizontally, it pulls the lower fixed bracket 2 and the lower connecting slide 201 upward through the cooperation of the middle connecting rotating rod 204 and the middle threaded rod 205. The lower fixed bracket 2 and the lower positioning bracket 202 move upward away from the wrought iron frame below. The rear lifting bracket 4 moves downward through the lower lifting telescopic cylinder 403. The upper fixed bracket 1 moves downward synchronously with the rear lifting bracket 4 away from the wrought iron frame. Then, the electric screw 303 drives the lower horizontal slide 402 to move horizontally. The upper fixed bracket 1 and the lower fixed bracket 2 move horizontally synchronously away from the finished wrought iron frame. The lower conveyor belt 3 transports the finished wrought iron frame to the next process. The entire unloading process does not require manual intervention, realizing automatic unloading. The continuous operation rate of the equipment is improved, the number of handling workers on the production line is reduced, and labor costs are reduced.
[0028] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only involve structures relevant to the embodiments disclosed herein; other structures may refer to general designs.
[0029] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.
[0030] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.
Claims
1. A fixing device for welding assemblies of wrought iron frames, comprising: The upper fixed frame (1), the lower fixed frame (2), the lower conveyor belt (3) and the rear lifting bracket (4) are characterized in that the lower fixed frame (2) is provided below the upper fixed frame (1), the lower conveyor belt (3) is provided below the lower fixed frame (2), the rear lifting bracket (4) is rotatably connected to the rear side of the upper fixed frame (1), the upper fixed frame (1) is provided with an upper limit boss (101) protruding from the top, the upper fixed frame (1) and the upper connecting slide rod (102) are slidably connected, the upper positioning frame (103) is slidably connected to the two sides of the upper connecting slide rod (102) at intervals, the upper telescopic cylinder (104) is fixedly connected to the middle of the upper fixed frame (1), and the upper limit frame (105) is fixedly connected to the front side of the upper connecting slide rod (102).
2. The fixing device for welding wrought iron frames according to claim 1, characterized in that, The lower fixed frame (2) is fixedly connected to the middle of the lower connecting slide (201), and the lower positioning frame (202) is slidably connected to both sides of the lower connecting slide (201). The rear connecting slide (203) is slidably connected to the rear side of the lower connecting slide (201). The middle connecting rod (204) is rotatably connected to the middle of the lower connecting slide (201). The upper end of the middle connecting rod (204) and the lower end of the middle threaded rod (205) are threadedly connected.
3. A fixing device for welding wrought iron frames according to claim 2, characterized in that, The telescopic rod of the upper telescopic cylinder (104) is fixedly connected to the upper connecting slide rod (102), the lower fixed frame (2) is slidably connected to the upper limit frame (105), and the rear connecting slide (203) is slidably connected to the upper fixed frame (1).
4. A fixing device for welding wrought iron frames according to claim 3, characterized in that, The upper end of the threaded rod (205) is threadedly connected to another connecting rod (204), and the connecting rod (204) at the upper end of the threaded rod (205) and the upper connecting slide rod (102) are rotatably connected.
5. A fixing device for welding wrought iron frames according to claim 1, characterized in that, The lower conveyor belt (3) and the side support (301) are connected by a rotating shaft for support and rotation. The lower part of the side support (301) is fixedly connected to a lower connecting slide (302), and the middle part of the lower connecting slide (302) is rotatably connected to an electric screw (303).
6. A fixing device for welding wrought iron frames according to claim 5, characterized in that, The upper tilting telescopic cylinder (401) is rotatably connected to the middle part of the rear lifting bracket (4), and the lower horizontal slide (402) is slidably connected to the lower part of the rear lifting bracket (4). The lower lifting telescopic cylinder (403) is fixedly connected to the middle part of the lower horizontal slide (402).
7. A fixing device for welding wrought iron frames according to claim 6, characterized in that, The telescopic rod of the upper tilting telescopic cylinder (401) is rotatably connected to the upper fixed frame (1), and the telescopic rod of the lower lifting telescopic cylinder (403) is fixedly connected to the rear lifting bracket (4).
8. A fixing device for welding wrought iron frames according to claim 7, characterized in that, The lower horizontal slide (402) and the lower connecting slide (302) are horizontally slidably connected, and the middle part of the lower horizontal slide (402) is threadedly connected to the electric screw (303).