Automatic welding device for heat insulation middle plate of automobile central control display screen

Abstract

The invention discloses an automatic welding device for a heat insulation middle plate of an automobile central control display screen, and relates to the technical field of welding, the automatic welding device comprises an electric drive sliding rail, a moving part of the electric drive sliding rail is slidably connected with welding machines symmetrically distributed along the electric drive sliding rail, and a fixed part of the electric drive sliding rail is fixedly connected with discharging frames symmetrically distributed along the electric drive sliding rail; the discharging frames are used for stacking and placing iron bars, the conveying belt is located between the symmetrically-distributed discharging frames and used for conveying heat insulation middle plates at intervals, the discharging frames are fixedly connected with electric push rods symmetrically distributed along the discharging frames, and pull frames are fixedly connected between the adjacent electric push rods. The length of a single welding seam is reduced through segmented welding, the cracking risk caused by stress concentration is reduced, meanwhile, the position of each welding point can be more accurately controlled, welding failure caused by conveying deviation is reduced, and the stability of the whole structure is improved through multi-point welding, and the attaching effect is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and in particular to an automatic welding device for a heat-insulating middle plate of a central control display screen of an automobile. Background Art

[0002] The thermal insulation plate for a car's central control display is a component installed between the central control display and the rear housing. It is primarily used to block and disperse heat generated by the engine compartment or other heat sources, preventing heat from being transferred to the display, thereby protecting the display from high temperatures, ensuring its normal operation and extending its service life. The thermal insulation plate for a car's central control display can be made from sheet metal with good thermal conductivity through rolling and stamping processes. This design effectively conducts and disperses heat, preventing heat from concentrating in a single point, thereby protecting the display from high temperatures, ensuring its normal operation and extending its service life. During the manufacturing process, to ensure that the metal plate is thin and light while also having sufficient strength, two welded iron bars are usually added to the metal plate to ensure a tight fit.

[0003] When welding the insulation plate and iron bar of a car's central control display, a single long iron bar is often used to simplify the process. However, this approach can easily cause cracking at the fracture joint during the subsequent integrated die-cutting process, leading to bonding failure. Furthermore, the insulation plate and iron bar may shift slightly during transport, further increasing the risk of weld failure. Summary of the Invention

[0004] In order to overcome the shortcoming that long iron bars are prone to cracking when welded, the present invention provides an automatic welding device for a heat-insulating middle plate of a central control display screen of an automobile.

[0005] The lifting mechanism is a bottom plate, and the lifting mechanism is a bottom plate, and the lifting mechanism is a bottom plate, and a lifting mechanism is installed in the lifting mechanism, and a lifting mechanism is installed in the lifting mechanism, and a lifting mechanism is installed in the lifting mechanism, and a lifting mechanism is installed in the lifting mechanism.

[0006] In addition, it is particularly preferred that it also includes a slide corresponding to the discharge frame, the slide is slidably connected to the corresponding discharge frame, a second spring is fixed between the slide and the corresponding discharge frame, and the slide is slidably connected to a positioning pressure frame for pressing and limiting the iron bars during welding.

[0007] In addition, it is particularly preferred that it also includes a round rod corresponding to the slide, the round rod is fixedly connected to the corresponding slide, the round rod is slidably connected to an L-shaped slide rod for pushing the adjacent positioning press frame to move upward, the discharge frame is slidably connected to a support rod along the up and down directions, the support rod is slidably connected to the adjacent L-shaped slide rod, the moving part of the electric drive slide rail is fixedly connected to a bracket symmetrically distributed along the electric drive slide rail, and the bracket is used to push the support rod on the same side to move upward.

[0008] Furthermore, it is particularly preferred that the L-shaped slide bar contacts the adjacent positioning press frame.

[0009] Furthermore, it is particularly preferred that a side of the bracket close to the adjacent bracket rod is provided as a wedge-shaped surface, and the wedge-shaped surface of the bracket moves horizontally to contact the adjacent bracket rod.

[0010] In addition, it is particularly preferred that a contact block corresponding to the round rod is also included, the contact block is slidingly connected to the corresponding round rod, the contact block contacts the adjacent L-shaped sliding rod, an induction switch is fixed to the top of the round rod, the contact block moves upward and contacts the adjacent induction switch, and the induction switch is electrically connected to the electric push rod through the control module.

[0011] In addition, it is particularly preferred that there is also a baffle corresponding to the discharge frame, which is slidingly connected to the corresponding discharge frame. The baffle is used to adjust the outlet size of the discharge frame according to the thickness of the iron bar. The discharge frame is fixed with a fixed plate, and the fixed plate is threadedly connected with a screw, which is rotatably connected to the adjacent baffle.

[0012] In addition, it is particularly preferred that it also includes a guide frame corresponding to the base plate, the guide frame is fixed to the side of the corresponding base plate away from the welding machine, the guide frame is slidably connected to the guide frame, the guide frame is slidably connected to the adjacent positioning pressure frame through a slide groove, and is used to drive the positioning pressure frame to deflect relative to the slide frame, the pull frame is rotatably connected to the push plate, a first torsion spring is fixed between the pull frame and the push plate, the slide plate is rotatably connected to the base plate, and a second torsion spring is fixed between the slide plate and the base plate.

[0013] In addition, it is particularly preferred that it also includes limit blocks symmetrically distributed along the slide, the limit blocks are fixedly connected to the adjacent slides, the limit blocks are used to limit the push plate, the push plate contacts the adjacent limit blocks, the push plate is fixed with push blocks symmetrically distributed along the push plate, the side of the limit block close to the adjacent push block is set to an arc surface, and the push block contacts the adjacent arc surface.

[0014] Beneficial effects: The present invention reduces the length of a single weld through segmented welding, reduces the risk of cracking due to stress concentration, and can more accurately control the position of each welding point, reducing welding failures caused by transmission offset. In addition, multi-point welding improves the stability of the overall structure and enhances the fitting effect.

[0015] The present invention can assist the iron bars in being pushed out smoothly by setting a bottom plate, and can also offset the influence of the thickness of the insulating middle plate itself, so that the iron bars can be pushed flat onto the insulating middle plate. Moreover, through the elastic setting of the first spring, the front and rear bottom plates can adapt to fit the insulating middle plate of any width.

[0016] During welding, the present invention uses the positioning pressure frame to assist in achieving compression and limiting, thereby avoiding displacement of the iron bar during welding and improving welding stability. After local welding and fixation, the positioning pressure frame and other components are automatically reset, so that the welding machine can weld the remaining parts along the iron bar without obstruction.

[0017] The present invention adjusts the up and down movement of the retaining frame by rotating the screw rod, so that the distance between the discharge frame and the bottom of the retaining frame is roughly the thickness of an iron bar, thereby adaptively adjusting according to the thickness of the iron bar to avoid the push plate pushing out too many iron bars.

[0018] The present invention arranges components such as a guide frame and a guide frame so that the iron bar can be adjusted along with the deflected heat insulating middle plate when being pushed out, thereby avoiding misaligned welding between the iron bar and the heat insulating middle plate with a small deflection.

[0019] The present invention limits the push plate by a limit block in the early stage and releases the limit in the later stage, so that the push plate cannot rotate in the early stage, so that force can be applied smoothly, and then the iron bar can be smoothly pushed out. When deflection is required, the restriction is released so that the push plate can rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the electric drive slide rail and the welding machine of the present invention.

[0022] Figure 3 This is a three-dimensional structural separation diagram of the electric push rod, pull frame, push plate and other components of the present invention.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the push plate, fixing rod and slide plate of the present invention.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the skateboard and the base plate of the present invention.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the sliding frame, round rod and other components of the present invention.

[0026] Figure 7 This is a schematic diagram of the three-dimensional structure of the positioning press frame, contact block, induction switch and other components of the present invention.

[0027] Figure 8 It is a schematic diagram of the three-dimensional structure of the retaining frame, fixing plate, screw and other components of the present invention.

[0028] Figure 9 It is a schematic diagram of the three-dimensional structure of the base plate, guide frame, guide frame and other components of the present invention.

[0029] Figure 10 It is a schematic diagram of the three-dimensional structure of the push plate, the first torsion spring, the second torsion spring and other components of the present invention.

[0030] Figure 11 It is a three-dimensional structural diagram of the components such as the pulling frame, the limiting block and the pushing block of the present invention.

[0031] In the figure: 1. Electric drive slide rail, 101. Conveyor belt, 102. Insulating middle plate, 103. Iron bar, 2. Welding machine, 3. Discharge frame, 4. Electric push rod, 5. Pull frame, 6. Push plate, 7. Fixed rod, 8. Slide plate, 9. Bottom plate, 10. First spring, 11. Slide, 12. Second spring, 13. Round rod, 14. L-shaped slide, 15. Support rod, 16. Bracket, 17. Positioning pressure frame, 18. Contact block, 19. Induction switch, 20. Stop frame, 21. Fixed plate, 22. Screw, 23. Guide frame, 24. Guide frame, 25. First torsion spring, 26. Second torsion spring, 27. Limit block, 28. Push block, 281. Arc surface. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Example 1: An automatic welding device for the heat-insulating middle plate of a central control display screen of an automobile, referring to the attached Figure 1 To the attached Figure 5, including an electric drive slide 1, the moving part of the electric drive slide 1 slides along the left and right direction and is connected to a welding machine 2 symmetrically distributed along the electric drive slide 1, the fixed part of the electric drive slide 1 is fixed with a discharge frame 3 symmetrically distributed along the electric drive slide 1, the discharge frame 3 is used to stack iron bars 103, the conveyor belt 101 is used to transmit the insulation middle plate 102 at intervals, the conveyor belt 101 passes between the front and rear discharge frames 3, the lower part of the discharge frame 3 is fixed with an electric push rod 4 symmetrically distributed along the discharge frame 3, and a pull rack 5 is fixed between adjacent electric push rods 4. 5 is provided with a push plate 6 in the middle, and the push plate 6 is used to push out the bottom iron bar 103 in the discharge frame 3. The lower part of the discharge frame 3 is fixed with fixed rods 7 symmetrically distributed along the left and right sides of the discharge frame 3. Slide plates 8 are connected with each other in a sliding manner along the front and rear directions between adjacent fixed rods 7. A bottom plate 9 is provided in the middle of the slide plate 8. The thickness of the bottom plate 9 is the same as that of the insulation middle plate 102. The tops of the slide plate 8 and the bottom plate 9 are in contact with the bottom of the push plate 6. The iron bar 103 at the bottom of the discharge frame 3 is in contact with the top of the bottom plate 9. A first spring 10 is fixed between the fixed rod 7 and the adjacent slide plate 8.

[0034] After the first spring 10 is released, the slide plate 8 is pulled to the side where the first spring 10 is compressed, so that the bottom plate 9 moves to the bottom of the discharge frame 3, and then the segmented iron bars 103 are stacked in the discharge frame 3, and the bottom iron bar 103 falls on the bottom plate 9. Then the conveyor belt 101 is controlled to transfer the heat insulating middle plate 102 to the welding position, and the electric push rod 4 is started. The electric push rod 4 pushes the push plate 6 to the side close to the heat insulating middle plate 102 through the pull frame 5, thereby pushing the bottom iron bar 103 to the side close to the heat insulating middle plate 102. During the pushing process, the slide plate 8 is gradually released, so that the first spring 10 in the compressed state is gradually reset, so that the slide plate 8 and the bottom plate 9 move together with the pushed push plate 6 to the side close to the heat insulating middle plate 102. When the bottom plates 9 on the front and rear sides contact the heat insulating middle plate 102 of any width, the slide plate 8 is completely released. In this way, the bottom plate 9 can assist the iron bar 103 to be pushed out smoothly, and can also offset the heat insulating middle plate 102 itself. Due to the influence of thickness, the iron bar 103 can be pushed flat onto the insulating middle plate 102, and through the elastic setting of the first spring 10, the front and rear bottom plates 9 can adapt to fit the insulating middle plate 102 of any width. Afterwards, the electric push rod 4 is controlled to pull the pull frame 5 and the push plate 6 back to their positions, and then the welding machine 2 is started and the electric drive slide 1 is driven to the right. The moving part of the electric drive slide 1 drives the welding machine 2 to move to the iron bar 103 to be welded, and the welding machine 2 welds along the four sides of the iron bar 103. After welding is completed, the welding machine 2 is turned off and the moving part of the electric drive slide 1 is controlled to move to the left and reset. In this way, each iron bar 103 is welded to the insulating middle plate 102 in sections. The segmented welding reduces the length of a single weld and reduces the risk of cracking due to stress concentration. At the same time, the position of each welding point can be controlled more accurately, reducing welding failure caused by transmission offset. In addition, multi-point welding improves the stability of the overall structure and enhances the fitting effect.

[0035] Example 2: Based on Example 1, Figure 6 and attached Figure 7, also includes a slide 11 corresponding to the discharge frame 3, the slide 11 is slidably connected to the corresponding discharge frame 3, a second spring 12 is fixed between the slide 11 and the corresponding discharge frame 3, a round rod 13 is fixed to the top of the slide 11, the round rod 13 is slidably connected to the L-shaped slide bar 14 along the up and down directions, the upper middle of the discharge frame 3 is slidably connected to the support rod 15 along the up and down directions, the support rod 15 is slidably connected to the adjacent L-shaped slide bar 14, the moving part of the electric drive slide rail 1 is fixed with a bracket 16 symmetrically distributed along the front and back of the electric drive slide rail 1, a wedge-shaped surface is provided on the lower right side of the bracket 16, the wedge-shaped surface of the bracket 16 moves to the right to contact the adjacent support rod 15, which is used to squeeze the support rod 15 to slide upward, and the slide 11 is slidably connected with a positioning pressure frame 17, which is used to press and limit the iron bar 103 during the welding process. The L-shaped slide bar 14 contacts the top of the adjacent positioning pressure frame 17. When the support rod 15 drives the L-shaped slide bar 14 to move upward, the L-shaped slide bar 14 will drive the positioning pressure frame 17 to move upward. The round rod 13 is slidably connected with a contact block 18 in the up and down directions. The contact block 18 contacts the adjacent L-shaped slide bar 14. An induction switch 19 is fixed to the top of the round rod 13. When the L-shaped slide bar 14 moves upward, it will drive the contact block 18 to move upward and contact the adjacent induction switch 19. At this time, the induction switch 19 is turned on, and the induction switch 19 is electrically connected to the electric push rod 4 through the control module.

[0036] When the iron bar 103 is pushed out, it contacts the lower part of the positioning pressure frame 17, and the positioning pressure frame 17 limits the top and side of the iron bar 103. At the same time, the iron bar 103 pushes the positioning pressure frame 17 to move toward the side close to the insulating middle plate 102. The positioning pressure frame 17 drives the slide 11, the round rod 13, the L-shaped slide bar 14, the contact block 18 and the induction switch 19 to move synchronously. The second spring 12 is compressed. After that, the welding machine 2 is started and the electric drive slide rail 1 is started. The moving part of the electric drive slide rail 1 drives the welding machine 2 and the bracket 16 to move to the right, so that the welding machine 2 welds the iron bar 103 to the insulating middle plate 102. In this way, during welding, the positioning pressure frame 17 is used to assist in achieving compression and limiting, thereby avoiding displacement of the iron bar 103 during welding and improving the stability of welding.

[0037] When the welding machine 2 has finished welding a part along the iron bar 103 to the right, the moving part of the electric drive slide rail 1 drives the bracket 16 to move just to contact the support rod 15, and squeezes the support rod 15 to move upward, thereby driving the L-shaped slide bar 14 to move upward, and then driving the positioning pressure frame 17 to slide upward until it is separated from the iron bar 103. At this time, the second spring 12 resets and drives the slide 11 to slide in the opposite direction and reset. At the same time, the L-shaped slide bar 14 drives the contact block 18 to move upward until it contacts the sensor switch 19. At this time, the sensor switch 19 controls the electric push rod 4 to automatically reset through the control module. After that, the welding machine 2 can weld the remaining parts along the iron bar 103 without hindrance.

[0038] Example 3: Based on Example 2, refer to the attached Figure 8 , and also includes a baffle 20 corresponding to the discharge frame 3, the baffle 20 is slidably connected to the corresponding discharge frame 3, the baffle 20 is used to adjust the outlet size of the discharge frame 3 according to the thickness of the iron bar 103, and the upper part of the discharge frame 3 is fixed with a fixed plate 21, the fixed plate 21 is threadedly connected with a screw 22, and the screw 22 is rotatably connected to the adjacent baffle 20.

[0039] In order to ensure that the push plate 6 only pushes out one iron bar 103 each time, the retaining frame 20 is adjusted to move up and down by rotating the screw 22, so that the distance between the discharge frame 3 and the bottom of the retaining frame 20 is roughly the thickness of an iron bar 103. In this way, adaptive adjustment can be made according to the thickness of the iron bar 103 to avoid the push plate 6 pushing out too many iron bars 103.

[0040] Example 4: Based on Example 3, refer to the attached Figure 9 and attached Figure 10 , and also includes a guide frame 23 corresponding to the base plate 9. The guide frame 23 is fixed to the right side of the corresponding base plate 9. The right side of the guide frame 23 is slidably connected to the guide frame 24 in the front-to-back direction. The left side of the guide frame 24 is slidably connected to the adjacent positioning pressure frame 17 through a slide groove. The guide frame 24 is used to drive the positioning pressure frame 17 to deflect relative to the slide 11. The pulling frame 5 is rotatably connected to the push plate 6. A first torsion spring 25 is fixed between the pulling frame 5 and the push plate 6. The slide plate 8 is rotatably connected to the base plate 9. A second torsion spring 26 is fixed between the slide plate 8 and the base plate 9.

[0041] The heat-insulating middle plate 102 on the conveyor belt 101 may deflect slightly when being transferred to the welding position. If the iron bar 103 is still pushed out in the original direction, it will cause misaligned welding. Therefore, the following operation is performed to allow the iron bar 103 to adjust along with the deflected heat-insulating middle plate 102 when being pushed out. The specific operation is as follows: in the process of moving toward the side close to the heat-insulating middle plate 102, the bottom plate 9 will be squeezed by the deflected heat-insulating middle plate 102, and adaptively deflect until it is in full contact with the heat-insulating middle plate 102. The second torsion spring 26 is deformed, and the deflection of the bottom plate 9 drives the guide frame 23 to deflect synchronously. , thereby driving the guide frame 24 to deflect synchronously, and then driving the positioning pressure frame 17 to deflect synchronously, so that the bottom plate 9, the positioning pressure frame 17 and the insulating middle plate 102 are parallel. In this way, when the push plate 6 continues to push the iron bar 103, the iron bar 103 will be squeezed by the deflected positioning pressure frame 17 and adaptively deflected to be parallel to the insulating middle plate 102. In this process, the push plate 6 also deflects synchronously with the iron bar 103, and the first torsion spring 25 is deformed. During the return process of the push plate 6, the slide plate 8, the bottom plate 9, the guide frame 23 and the guide frame 24, the first torsion spring 25 and the second torsion spring 26 are reset.

[0042] Refer to the attached Figure 11, and also includes limit blocks 27 symmetrically distributed along the slide 8. The limit blocks 27 are fixedly connected to the adjacent slide 8, and the push plate 6 contacts the adjacent limit blocks 27. The limit blocks 27 are used to limit the adjacent push plates 6. The side of the push plate 6 close to the limit block 27 is fixed with a push block 28 symmetrically distributed along the push plate 6. The side of the limit block 27 close to the adjacent push block 28 is set to an arc surface 281, and the push block 28 contacts the adjacent arc surface 281.

[0043] Since the push plate 6 can rotate on the pull frame 5, it is difficult for the push plate 6 to apply force smoothly in the early stage, and thus it is difficult to smoothly translate and push out the iron bar 103. Therefore, in order to limit the push plate 6 from rotating in the early stage, the restriction is released when deflection is required so that the push plate 6 can rotate. The specific operation is as follows: In the early stage, the push plate 6 is limited by the limit block 27, so that the push plate 6 can only move horizontally. In the later stage, when the bottom plate 9 begins to deflect, the push plate 6 has moved out of the arc surface 281, and the limit block 27 no longer limits the push plate 6, so that the push plate 6 can deflect, and when the push plate 6 is reset, the push plate 6 can drive the slide plate 8 to slide automatically relative to the fixed rod 7 by pushing the limit block 27, so that the first spring 10 is automatically compressed, and there is no need to manually pull the slide plate 8.

[0044] The above description is merely an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention are intended to be included within the scope of protection of the present invention. Any content not elaborated in detail herein is already known to those skilled in the art.

Claims

1. An automatic welding device for a heat-insulating middle plate of a central control display screen of an automobile, comprising an electric drive slide rail (1), a moving portion of the electric drive slide rail (1) being slidably connected to welding machines (2) symmetrically distributed along the electric drive slide rail (1), characterized in that: A discharge frame (3) symmetrically distributed along the electric drive slide rail (1) is fixedly connected to the fixed portion of the electric drive slide rail (1), the discharge frame (3) is used to stack and place iron bars (103), a conveyor belt (101) is located between the symmetrically distributed discharge frames (3), the conveyor belt (101) is used to transmit the heat insulation middle plate (102) at intervals, the discharge frame (3) is fixedly connected to electric push rods (4) symmetrically distributed along the discharge frame (3), and a pull frame (5) is fixedly connected between adjacent electric push rods (4), and the pull frame (5) is provided with a function for pushing out the bottom iron bar (103) in the discharge frame (3). ) of the push plate (6), the discharge frame (3) is fixed with fixed rods (7) symmetrically distributed along the discharge frame (3), and a slide plate (8) is slidably connected between adjacent fixed rods (7). The slide plate (8) is provided with a bottom plate (9), and the thickness of the bottom plate (9) is the same as the thickness of the heat-insulating middle plate (102). The tops of the slide plate (8) and the bottom plate (9) are in contact with the bottom of the push plate (6), and the iron bar (103) at the bottom of the discharge frame (3) is in contact with the top of the bottom plate (9). A first spring (10) is fixed between the fixed rod (7) and the adjacent slide plate (8).

2. The automatic welding device for the heat-insulating middle plate of a central control display screen of an automobile according to claim 1, characterized in that: The invention also includes a slide (11) corresponding to the discharge frame (3), the slide (11) is slidably connected to the corresponding discharge frame (3), a second spring (12) is fixed between the slide (11) and the corresponding discharge frame (3), and the slide (11) is slidably connected to a positioning pressing frame (17) for pressing and limiting the iron bar (103) during the welding process.

3. The automatic welding device for the heat-insulating middle plate of a central control display screen of an automobile according to claim 2, characterized in that: The invention also includes a round rod (13) corresponding to the slide (11), the round rod (13) is fixedly connected to the corresponding slide (11), the round rod (13) is slidably connected to an L-shaped slide rod (14) for pushing the adjacent positioning press frame (17) to move upward, the discharge frame (3) is slidably connected to a support rod (15) in the up and down directions, the support rod (15) is slidably connected to the adjacent L-shaped slide rod (14), the moving part of the electric drive slide rail (1) is fixedly connected to a bracket (16) symmetrically distributed along the electric drive slide rail (1), and the bracket (16) is used to push the support rod (15) on the same side to move upward.

4. The automatic welding device for the heat-insulating middle plate of a central control display screen of an automobile according to claim 3, characterized in that: The L-shaped slide bar (14) contacts the adjacent positioning press frame (17).

5. The automatic welding device for the heat-insulating middle plate of a central control display screen of an automobile according to claim 4, characterized in that: A side of the bracket (16) close to the adjacent support rod (15) is provided as a wedge-shaped surface, and the wedge-shaped surface of the bracket (16) moves horizontally to contact the adjacent support rod (15).

6. The automatic welding device for the heat-insulating middle plate of a central control display screen of an automobile according to claim 5, characterized in that: The invention also includes a contact block (18) corresponding to the round rod (13), the contact block (18) is slidably connected to the corresponding round rod (13), the contact block (18) contacts the adjacent L-shaped sliding rod (14), the top of the round rod (13) is fixed with an induction switch (19), the contact block (18) moves upward to contact the adjacent induction switch (19), and the induction switch (19) is electrically connected to the electric push rod (4) through the control module.

7. The automatic welding device for the heat-insulating middle plate of a central control display screen of an automobile according to claim 6, characterized in that: The invention also includes a retaining frame (20) corresponding to the discharge frame (3), the retaining frame (20) is slidably connected to the corresponding discharge frame (3), the retaining frame (20) is used to adjust the outlet size of the discharge frame (3) according to the thickness of the iron bar (103), the discharge frame (3) is fixed with a fixed plate (21), the fixed plate (21) is threadedly connected with a screw (22), and the screw (22) is rotatably connected to the adjacent retaining frame (20).

8. The automatic welding device for the heat-insulating middle plate of a central control display screen of an automobile according to claim 7, characterized in that: The invention also includes a guide frame (23) corresponding to the base plate (9), the guide frame (23) is fixed to the side of the corresponding base plate (9) away from the welding machine (2), the guide frame (23) is slidably connected to the guide frame (24), the guide frame (24) is slidably connected to the adjacent positioning pressure frame (17) through a slide groove, and is used to drive the positioning pressure frame (17) to deflect relative to the slide frame (11), the pull frame (5) is rotatably connected to the push plate (6), a first torsion spring (25) is fixed between the pull frame (5) and the push plate (6), the slide plate (8) is rotatably connected to the base plate (9), and a second torsion spring (26) is fixed between the slide plate (8) and the base plate (9).

9. The automatic welding device for the heat-insulating middle plate of a central control display screen of an automobile according to claim 8, characterized in that: The invention also includes a limit block (27) symmetrically distributed along the slide plate (8), the limit block (27) is fixedly connected to the adjacent slide plate (8), the limit block (27) is used to limit the push plate (6), the push plate (6) contacts the adjacent limit block (27), the push plate (6) is fixedly connected to a push block (28) symmetrically distributed along the push plate (6), and a side of the limit block (27) close to the adjacent push block (28) is set as an arc surface (281), and the push block (28) contacts the adjacent arc surface (281).

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