Anti-theft door welding machine capable of achieving uniform heating

Abstract

The invention provides an anti-theft door welding machine capable of achieving uniform heating, and relates to the technical field of welding devices, heating plates can be combined to heat the two sides of an anti-theft door at the same time, the follow-up welding efficiency is improved, bases of the heating plates serve as rotating base points, the heating plate on one side is rotated to be in a horizontal state and then supported by a supporting plate at the bottom, and the welding efficiency is improved. The heating plate at the upper end is opened to be in a vertical state, the top surface of the anti-theft door corresponds to the welding device on the portal frame, one side face of the anti-theft door is welded, then the two heating plates are turned over to replace the positions, the surface of the other side of the anti-theft door faces upwards, and the welding device conducts welding machining on the surface of the other side of the anti-theft door; before machining, the two faces of the anti-theft door are heated at the same time, then the heating plate on one side serves as a supporting base, the anti-theft door is flatly placed and then welded, the two faces of the anti-theft door can be continuously welded after being heated, the machining efficiency is improved, and it is guaranteed that heating is uniform.

Description

Technical Field

[0001] The invention relates to the technical field of welding devices, in particular to a welding machine for anti-theft doors which can realize uniform heating. Background Art

[0002] During the processing, the security door is composed of multiple parts. The welding machine can perform welding processing on the security door. During the welding process, the temperature of the security door or its parts is close to the ambient temperature, and the welding process requires a large amount of heat. As a result, the welding machine needs a longer time to melt the welding part and weld the parts to the security door. If the processing is carried out in winter, the temperature of the security door is lower, so it takes more time to weld, and the work efficiency is low.

[0003] Before welding the security door, the prior art usually requires heating the welding surface. A common method is to place the security door on a heating table, heat one side and then weld it. When both sides of the security door need to be processed, the security door needs to be manually turned over, and the other side of the security door needs to be heated and then connected to the corresponding welding device. The manual operation in this process is relatively inconvenient, and it cannot completely guarantee that the security door can be heated evenly. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an anti-theft door welding machine that can achieve uniform heating to solve the problems raised in the above-mentioned background technology. The present invention has a novel structure. The heating plates can be combined to heat both sides of the anti-theft door at the same time to improve the efficiency of subsequent welding. The base of the heating plate is used as the rotation base point. After the heating plate on one side is rotated to a horizontal state, it is supported by the support plate at the bottom. The heating plate on the upper end is opened to a vertical state. The top surface of the anti-theft door is aligned with the welding device on the gantry, and one side of the anti-theft door is welded. Then the two heating plates are flipped and replaced, and the surface of the other side of the anti-theft door is facing upward. The welding device performs welding processing on the other side surface of the anti-theft door. Before processing, both sides of the anti-theft door are heated at the same time. Then, the anti-theft door is placed flat with the heating plate on one side as the support base for welding processing. The two sides of the anti-theft door can be continuously heated and welded, thereby improving the processing efficiency and ensuring uniform heating.

[0005] In order to achieve the above-mentioned purpose, the present invention is realized by the following technical scheme: a burglar-proof door welding machine capable of achieving uniform heating, comprising a base, a top frame being provided on the top of the base, and sliding frames being slidably installed on both sides of the top frame, a welding device being slidably installed inside the sliding frame, a clamping assembly being provided on the middle surface of the base, the clamping assembly comprising a bottom frame, two heating plates being slidably installed inside the bottom frame, a door panel being clamped between the two heating plates, heating rods being equidistantly fixed inside the heating plates, a support plate being provided on the inner bottom surface of the heating plates, and two corner frames being symmetrically provided on the inner top surface of the heating plates, and the door panel being placed between the corner frames and the support plates, a mounting frame being fixed at a position of the base corresponding to the bottom frame, and both ends of the base being rotatably installed on the mounting frame through bearings, a flip motor being fixed at the outer end of the mounting frame on one side of the base, and an output end of the flip motor being fixedly connected to the bottom frame, a support assembly being provided on both sides of the mounting frame of the base, the support assembly comprising two groups of support plates, a connecting rod being rotatably installed at the bottom of the support plate through a rotating shaft, and the connecting rod sliding along the surface of the base.

[0006] Furthermore, cylinders are fixed at the four corners of the base, and the extended ends of the cylinders are fixedly connected to the four corners of the top frame. A first screw rod is rotatably installed at the middle position of the top frame through a bearing, and the top thread of the sliding frame is sleeved on the surface of the first screw rod.

[0007] Furthermore, a second screw rod is rotatably mounted inside the sliding frame via a bearing, the welding device is slidably mounted inside the sliding frame via a mounting seat, and the mounting seat of the welding device is threadedly sleeved on the surface of the second screw rod.

[0008] Furthermore, the clamping assembly also includes a first bidirectional screw, which is rotatably installed inside the bottom frame through a bearing, and a slide plate is threadedly sleeved on the two end surfaces of the first bidirectional screw. The slide plate is rotatably connected to the heating plate through a rotating shaft and a torsion spring, and the slide plate slides along the inside of the bottom frame.

[0009] Furthermore, a movable groove is opened on the surface of the support plate, and a second bidirectional screw is rotatably installed inside the movable groove of the support plate through a bearing, and both ends of the second bidirectional screw are threadedly sleeved with vertical plates, and a sleeve frame is fixed on the side of the corner frame facing the vertical plate, and the sleeve frame is slidably sleeved on the surface of the vertical plate.

[0010] Furthermore, the first screw rod, the second screw rod, the first bidirectional screw rod and the second bidirectional screw rod are all controlled to rotate by a driving motor.

[0011] Furthermore, a locking bolt is threadedly inserted into the outer surface of the sleeve frame, and the locking bolt is in compression contact with the vertical plate, and the vertical plate and the supporting plate on the same side of the two heating plates are fixedly connected with a telescopic rod.

[0012] Furthermore, electric push rods are fixed to both ends of the support plate close to the outer side, and connecting plates are fixed to the positions of the heating plate corresponding to the electric push rods. A socket is provided on the connecting plate, and the extended end of the electric push rod can be inserted into the socket.

[0013] Furthermore, two sets of winding seats are symmetrically installed on both sides of the bottom frame, and a pull rope is wound on the winding shaft of the winding seat, one end of the pull rope is fixedly connected to the outer surface of the heating plate, and the two winding seats on the same side of the bottom frame are driven by a shaft and a motor.

[0014] Furthermore, the support assembly also includes a slide rail, the bottom of the base corresponding to the support plate is fixed with a slide rail, and two sliders are slidably connected inside the slide rail, and the bottom of the connecting rod is rotatably connected to the slider via a rotating shaft.

[0015] Beneficial effects of the present invention:

[0016] 1. The present invention utilizes a connecting rod to adjust the height of the support plate, thereby supporting the bottom of the flat heating plate and maintaining the stability of the welding process. At the same time, the bottom position of the heating plate is different when it is laid flat for anti-theft doors of different thicknesses, and the support plate maintains contact with the bottom of the flat heating plate by adjusting the height.

[0017] 2. In the present invention, when the two heating plates are in a vertical state, the extended ends of the electric push rods at both ends of the support plate are inserted into the jacks of the connecting plate, and the heating plate and the support plate are vertically limited. At this time, the anti-theft door can be inserted between the two heating plates, and the bottom of the door panel is supported by the two support plates, and the door panel is clamped and fixed with the help of the corner frames, thereby ensuring the uniformity and stability of the heating process.

[0018] 3. In the present invention, when it is necessary to perform welding processing on one surface of a door panel, the base drives the heating plate to flip to the corresponding direction. At this time, the two heating plates and the door panel are laid flat, and the heating plate on the upper end of the door panel is retracted and separated from the connecting plate by the extended end of the electric push rod. At this time, the support plate is separated from the heating plate, and the uppermost heating plate is rotated to a vertical state along the position of the slide plate by using the winding seat and the pull rope to expose the welding surface of the door panel. At the same time, when it is necessary to weld the other side of the door panel, the two heating plates and the door panel are flipped to the other side, and then the upper heating plate is rotated to a vertical state alone, and the upward side of the door panel is welded. In this process, structures such as the support plate and the clamping frame connected to the heating plates can be separated from the heating plates that need to be flipped open separately, and remain connected to the flat heating plates, thereby maintaining a limiting effect on the welded door panels.

[0019] 4. Before the door panel is placed between the two heating plates, the present invention first drives the motor to control the rotation of the first bidirectional screw, and the two slides slide along the bottom frame to adjust the distance between the two heating plates. Although the door panel is inserted from the gap between the two heating plates, the bottom contacts with the two support plates, and the bottom of the door panel is supported by the support plates. The second bidirectional screw inside the support plate is rotated to drive the vertical plate to move closer to the side of the door panel, and the sleeve frame slides along the vertical plate to match the position of the corner frame to the two corner positions at the top of the door panel, and the corner frame is positioned by the locking bolts, so that the corner frame and the support plate limit and clamp the door panel to maintain its stability during flipping and welding and the uniformity of the heating process. The vertical plate and the support plate on the inner side of the two heating plates are connected by telescopic rods, and can be expanded or contracted in coordination with the movement of the heating plates.

[0020] 5. Compared with the prior art, the present invention is capable of combining the heating plates to heat both sides of the security door at the same time, thereby improving the efficiency of subsequent welding. With the base of the heating plate as the rotation base point, one side of the heating plate is rotated to a horizontal state, and then supported by the support plate at the bottom. The upper heating plate is opened to a vertical state, and the top surface of the security door is aligned with the welding device on the gantry to weld one side of the security door. Subsequently, the two heating plates are flipped and replaced, and the surface of the other side of the security door is facing upward. The welding device performs welding processing on the other side of the security door. Before processing, both sides of the security door are heated at the same time. Then, the security door is laid flat with one side of the heating plate as the support base for welding. The two sides of the security door can be continuously heated and welded, thereby improving processing efficiency and ensuring uniform heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a burglary-proof door welding machine capable of achieving uniform heating according to the present invention;

[0022] Figure 2 This is a schematic diagram of the installation structure of a welding device of a burglary-proof door welding machine capable of achieving uniform heating according to the present invention;

[0023] Figure 3 This is a schematic structural diagram of a support assembly of a burglary-proof door welding machine capable of achieving uniform heating according to the present invention;

[0024] Figure 4 This is a schematic diagram of the connection between a heating plate and a pull rope of a burglary-proof door welding machine capable of achieving uniform heating according to the present invention;

[0025] Figure 5 This is a schematic diagram of the connection between a heating plate and a bottom frame of a burglary-proof door welding machine capable of achieving uniform heating according to the present invention;

[0026] Figure 6 This is a schematic diagram of the connection between the corner frame and the heating plate of a burglary-proof door welding machine capable of achieving uniform heating according to the present invention;

[0027] Figure 7 The present invention is a schematic diagram of the connection between a support plate and a heating plate of a burglary-proof door welding machine capable of achieving uniform heating.

[0028] In the figure: 1. base; 11. cylinder; 12. top frame; 13. first screw rod; 14. slide frame; 15. welding device; 16. mounting frame; 17. flip motor; 18. second screw rod; 2. clamping assembly; 21. heating plate; 22. heating rod; 23. bottom frame; 24. winding seat; 25. pull rope; 26. first bidirectional screw rod; 27. slide plate; 28. vertical plate; 29. ​​telescopic rod; 210. corner frame; 211. sleeve frame; 212. locking bolt; 213. support plate; 214. electric push rod; 215. connecting plate; 216. second bidirectional screw rod; 3. door panel; 4. support assembly; 41. slide rail; 42. slider; 43. connecting rod; 44. support plate. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0030] See also Figures 1 to 7The present invention provides a technical solution: a burglar-proof door welding machine capable of achieving uniform heating, comprising a base 1, a top frame 12 is provided on the top of the base 1, and sliding frames 14 are slidably installed on both sides of the top frame 12, a welding device 15 is slidably installed inside the sliding frame 14, a clamping assembly 2 is provided on the middle surface of the base 1, the clamping assembly 2 comprises a bottom frame 23, two heating plates 21 are slidably installed in the bottom frame 23, a door panel 3 is clamped between the two heating plates 21, heating rods 22 are equidistantly fixed inside the heating plates 21, a supporting plate 213 is provided on the inner bottom surface of the heating plate 21, and two corner frames 210 are symmetrically provided on the inner top surface of the heating plate 21, and the door panel 3 is placed between the corner frame 210 and the supporting plate 213, a mounting frame 16 is fixed on the position of the base 1 corresponding to the bottom frame 23, and two ends of the base 1 are rotatably installed on the mounting frame 16 through bearings, a flip motor 17 is fixed on the outer end of the mounting frame 16 on one side of the base 1, and the flip motor 17 is fixed on the outer end of the mounting frame 16 on one side of the base 1 The output end of the machine 17 is fixedly connected to the bottom frame 23. The base 1 is provided with support components 4 on both sides of the mounting frame 16. The support components 4 include two groups of support plates 44. The bottom of the support plate 44 is rotatably mounted with a connecting rod 43 through a rotating shaft, and the connecting rod 43 slides along the surface of the base 1. When using the device, the two heating plates 21 are adjusted to a vertical state, the distance between the two heating rods 22 is adjusted according to the thickness of the processed door panel 3, and the door panel 3 is inserted from the gap of the heating plate 21, and the support plate 213 and the The corner frame 210 clamps and limits the door panel 3, and the heating rod 22 inside the heating plate 21 is turned on to heat the surfaces of both sides of the door panel 3 at the same time. Then the flipping motor 17 drives the bottom frame 23 to rotate along the mounting frame 16, and the door panel 3 is rotated and laid flat. The heating plate 21 at the upper end of the door panel 3 is rotated to a vertical state, and the welding device 15 moves along the top frame 12 to the upper end of the door panel 3 for welding. Then the heating plate 21 and the door panel 3 are flipped to the other side, and the welding device 15 processes the other side surface of the door panel 3.

[0031] In this embodiment, cylinders 11 are fixed at the four corners of the base 1, and the extended ends of the cylinders 11 are fixedly connected to the four corners of the top frame 12. A first screw rod 13 is rotatably installed at the middle position of the top frame 12 through a bearing, and the top of the sliding frame 14 is threadedly sleeved on the surface of the first screw rod 13. A second screw rod 18 is rotatably installed inside the sliding frame 14 through a bearing. The welding device 15 is slidably installed inside the sliding frame 14 through a mounting seat, and the mounting seat of the welding device 15 is threadedly sleeved on the surface of the second screw rod 18. The top frame 12 is driven to rise or fall by the cylinder 11. When the position of the welding device 15 needs to be adjusted, the top frame 12 is raised to the highest position, the first screw rod 13 is rotated, and the sliding frame 14 cooperates with the first screw rod 13 to move the welding device 15 to the top of the welding surface of the door panel 3, and the welding device 15 is moved to the corresponding point of the door panel 3 by the second screw rod 18 inside the sliding frame 14, and then the welding device 15 is driven by the cylinder 11 to fall close to the surface of the door panel 3 for welding.

[0032] In this embodiment, the clamping assembly 2 also includes a first bidirectional screw 26, the first bidirectional screw 26 is rotatably mounted inside the bottom frame 23 through a bearing, and slide plates 27 are threadedly sleeved on the surfaces of both ends of the first bidirectional screw 26, the slide plate 27 is rotatably connected to the heating plate 21 through a rotating shaft and a torsion spring, and the slide plate 27 slides along the inside of the bottom frame 23, a moving groove is opened on the surface of the support plate 213, and a second bidirectional screw 216 is rotatably mounted inside the moving groove of the support plate 213 through a bearing, The two ends of the second bidirectional screw 216 are threadedly sleeved with the vertical plate 28, and the corner frame 210 is fixed with a sleeve frame 211 on the side facing the vertical plate 28, and the sleeve frame 211 is slidably sleeved on the surface of the vertical plate 28. The first screw 13, the second screw 18, the first bidirectional screw 26 and the second bidirectional screw 216 are all controlled to rotate by the driving motor, and the outer surface of the sleeve frame 211 is threadedly inserted with a locking bolt 212, and the locking bolt 212 is in compression contact with the vertical plate 28. The two heating plates 21 are simultaneously The vertical plate 28 and the support plate 213 on one side are fixedly connected with the telescopic rod 29. Before the door panel 3 is placed between the two heating plates 21, the motor is first driven to control the first bidirectional screw 26 to rotate, and the two slide plates 27 slide along the bottom frame 23 to adjust the distance between the two heating plates 21. Although the door panel 3 is inserted from the gap between the two heating plates 21, the bottom contacts the two support plates 213, and the support plates 213 support the bottom of the door panel 3. The second bidirectional screw 216 inside the support plate 213 is rotated to drive the vertical plate 28 Move closer to the side of the door panel 3, and the sleeve frame 211 slides along the vertical plate 28, so that the position of the corner frame 210 corresponds to the two corner positions at the top of the door panel 3, and the corner frame 210 is positioned by the locking bolt 212, so that the corner frame 210 and the support plate 213 limit and clamp the door panel 3 to maintain its stability during the flipping and welding process and the uniformity of the heating process. The vertical plates 28 and the support plates 213 on the inner sides of the two heating plates 21 are connected by the telescopic rod 29, and can be expanded or contracted in coordination with the movement of the heating plates 21.

[0033] In this embodiment, electric push rods 214 are fixed at both ends of the support plate 213 near the outer side, and a connecting plate 215 is fixed at the position of the heating plate 21 corresponding to the electric push rod 214. A plug hole is opened on the connecting plate 215, and the extended end of the electric push rod 214 can be inserted into the plug hole. Two groups of winding seats 24 are symmetrically installed on both sides of the bottom frame 23, and a pull rope 25 is wound on the winding shaft of the winding seat 24, and one end of the pull rope 25 is fixedly connected to the outer surface of the heating plate 21. The two winding seats 24 on the same side of the bottom frame 23 are driven by a shaft and a motor. When the two heating plates 21 are in a vertical state, the extended ends of the electric push rods 214 at both ends of the support plate 213 are inserted into the plug hole of the connecting plate 215, and the heating plate 21 and the support plate 213 are vertically limited. At this time, the anti-theft door can be inserted between the two heating plates 21, and the bottom support of the door panel 3 is supported by the two support plates 213, and the door panel 3 is clamped and fixed by the corner frame 210 to ensure heating. The uniformity and stability of the process, when it is necessary to weld one side of the door panel 3, the base 1 drives the heating plate 21 to flip to the corresponding direction. At this time, the two heating plates 21 and the door panel 3 are placed flat, and the heating plate 21 at the upper end of the door panel 3 is retracted and separated from the connecting plate 215 after the extended end of the electric push rod 214 is retracted. At this time, the supporting plate 213 is separated from the heating plate 21, and the winding seat 24 and the pull rope 25 are used to rotate the uppermost heating plate 21 along the position of the slide plate 27 to a vertical state, exposing the welding surface of the door panel 3. At the same time, when it is necessary to weld the other side of the door panel 3, the two heating plates 21 and the door panel 3 are flipped to the other side, and then the upper heating plate 21 is rotated to a vertical state alone, and the upward side of the door panel 3 is welded. In this process, the supporting plate 213 and the clamping frame connected to the heating plate 21 can be separated from the heating plate 21 that needs to be flipped open separately, and remain connected to the flat heating plate 21, so as to maintain a limiting effect on the welded door panel 3.

[0034] In this embodiment, the support assembly 4 also includes a slide rail 41. The bottom of the support plate 44 of the base 1 is fixed with a slide rail 41, and two sliders 42 are slidably connected inside the slide rail 41. The bottom of the connecting rod 43 is rotatably connected to the slider 42 through a rotating shaft. A two-way electric push rod is installed between the two sliders 42 inside the slide rail 41 to push the two sliders 42 to move in opposite directions at the same time. The height of the support plate 44 is adjusted by the connecting rod 43 to support the bottom of the flat heating plate 21 to maintain the stability of the welding process. At the same time, the position of the bottom of the heating plate 21 when it is laid flat is different for anti-theft doors of different thicknesses. The support plate 44 maintains contact with the bottom of the flat heating plate 21 by adjusting the height.

[0035] When using the device, the two heating plates 21 are adjusted to a vertical state. Before the door panel 3 is placed between the two heating plates 21, the motor is first driven to control the first bidirectional screw 26 to rotate, and the two slide plates 27 slide along the bottom frame 23 to adjust the distance between the two heating plates 21. Although the door panel 3 is inserted from the gap between the two heating plates 21, the bottom contacts the two support plates 213, and the support plates 213 support the bottom of the door panel 3. The second bidirectional screw 216 inside the support plate 213 is rotated to drive the vertical plate 28 to move closer to the side of the door panel 3, and the sleeve frame 211 slides along the vertical plate 28. The position of the corner frame 210 corresponds to the two corner positions at the top of the door panel 3, and the corner frame 210 is positioned by the locking bolt 212, so that the corner frame 210 and the support plate 213 limit and clamp the door panel 3 to maintain its stability during the flipping and welding process and the uniformity of the heating process. The heating rod 22 inside the heating plate 21 is turned on to heat the surfaces of both sides of the door panel 3 at the same time. When it is necessary to weld one side of the door panel 3, the base 1 drives the heating plate 21 to flip to the corresponding direction. At this time, the two heating plates 21 and the door panel 3 are placed flat, and the heating plate 21 at the upper end of the door panel 3, After the extended end of the electric push rod 214 is retracted and separated from the connecting plate 215, the support plate 213 is separated from the heating plate 21, and the winding seat 24 and the pull rope 25 are used to rotate the uppermost heating plate 21 along the position of the slide plate 27 to a vertical state, exposing the welding surface of the door panel 3. At the same time, when it is necessary to weld the other side of the door panel 3, the two heating plates 21 and the door panel 3 are turned to the other side, and then the upper heating plate 21 is rotated to a vertical state alone, and the upward side of the door panel 3 is welded. In this process, the support plate 213 and the clamping frame connecting the heating plate 21 can be used together with the single The heating plate 21 that is flipped open is separated and kept connected to the flat heating plate 21 to maintain a limiting effect on the welded door panel 3. A two-way electric push rod is installed between the two sliders 42 inside the slide rail 41 to push the two sliders 42 to move in opposite directions at the same time. The height of the support plate 44 is adjusted by the connecting rod 43 to support the bottom of the flat heating plate 21 to maintain the stability of the welding process. At the same time, the position of the bottom of the heating plate 21 when it is laid flat is different for anti-theft doors of different thicknesses. The support plate 44 maintains contact with the bottom of the flat heating plate 21 by adjusting the height.

[0036] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A burglary-proof door welding machine capable of achieving uniform heating, comprising a base (1), characterized in that: A top frame (12) is provided on the top of the base (1), and sliding frames (14) are slidably installed on both sides of the top frame (12), and a welding device (15) is slidably installed inside the sliding frame (14). A clamping assembly (2) is provided on the middle surface of the base (1), and the clamping assembly (2) includes a bottom frame (23), and two heating plates (21) are slidably installed inside the bottom frame (23), and a door panel (3) is clamped between the two heating plates (21). Heating rods (22) are equidistantly fixed inside the heating plates (21), and a supporting plate (213) is provided on the inner bottom surface of the heating plate (21), and two corner frames (210) are symmetrically provided on the inner top surface of the heating plate (21). The door panel (3) is placed between the corner frame (210) and the support plate (213); a mounting frame (16) is fixed at a position of the base (1) corresponding to the bottom frame (23); and both ends of the base (1) are rotatably mounted on the mounting frame (16) through bearings; a flip motor (17) is fixed to the outer end of the mounting frame (16) on one side of the base (1); and the output end of the flip motor (17) is fixedly connected to the bottom frame (23); and support assemblies (4) are provided on both sides of the mounting frame (16) of the base (1); the support assemblies (4) include two groups of support plates (44); a connecting rod (43) is rotatably mounted on the bottom of the support plate (44) through a rotating shaft, and the connecting rod (43) slides along the surface of the base (1).

2. The anti-theft door welding machine capable of achieving uniform heating according to claim 1, characterized in that: Cylinders (11) are fixed at the four corners of the base (1), and the extended ends of the cylinders (11) are fixedly connected to the four corners of the top frame (12). A first screw rod (13) is rotatably mounted at the middle position of the top frame (12) via a bearing, and the top of the sliding frame (14) is threadedly sleeved on the surface of the first screw rod (13).

3. The anti-theft door welding machine capable of achieving uniform heating according to claim 2, characterized in that: A second screw rod (18) is rotatably mounted inside the slide frame (14) via a bearing, and the welding device (15) is slidably mounted inside the slide frame (14) via a mounting seat, and the mounting seat of the welding device (15) is threadedly sleeved on the surface of the second screw rod (18).

4. The anti-theft door welding machine capable of achieving uniform heating according to claim 3, characterized in that: The clamping assembly (2) also includes a first bidirectional screw (26), the first bidirectional screw (26) is rotatably mounted inside the bottom frame (23) via a bearing, and slide plates (27) are threadedly sleeved on both end surfaces of the first bidirectional screw (26), the slide plate (27) is rotatably connected to the heating plate (21) via a rotating shaft and a torsion spring, and the slide plate (27) slides along the inside of the bottom frame (23).

5. The anti-theft door welding machine capable of achieving uniform heating according to claim 4, characterized in that: A movable groove is provided on the surface of the support plate (213), and a second bidirectional screw rod (216) is rotatably mounted inside the movable groove of the support plate (213) via a bearing, and both ends of the second bidirectional screw rod (216) are threadedly sleeved with a vertical plate (28), and a sleeve frame (211) is fixed on a side of the corner frame (210) facing the vertical plate (28), and the sleeve frame (211) is slidably sleeved on the surface of the vertical plate (28).

6. The anti-theft door welding machine capable of achieving uniform heating according to claim 5, characterized in that: The first screw rod (13), the second screw rod (18), the first bidirectional screw rod (26) and the second bidirectional screw rod (216) are all controlled to rotate by a driving motor.

7. The anti-theft door welding machine capable of achieving uniform heating according to claim 5, characterized in that: The outer surface of the sleeve frame (211) is threadedly plugged with a locking bolt (212), and the locking bolt (212) is in compression contact with the vertical plate (28), and the vertical plate (28) and the support plate (213) on the same side of the two heating plates (21) are fixedly connected with a telescopic rod (29).

8. The anti-theft door welding machine capable of achieving uniform heating according to claim 7, characterized in that: Electric push rods (214) are fixed at both ends of the support plate (213) close to the outside, and a connecting plate (215) is fixed at a position of the heating plate (21) corresponding to the electric push rod (214). A plug hole is provided on the connecting plate (215), and the extended end of the electric push rod (214) can be inserted into the plug hole.

9. The anti-theft door welding machine capable of achieving uniform heating according to claim 8, characterized in that: Two groups of winding seats (24) are symmetrically installed on both sides of the bottom frame (23), and a pull rope (25) is wound on the winding shaft of the winding seat (24), one end of the pull rope (25) is fixedly connected to the outer surface of the heating plate (21), and the two winding seats (24) on the same side of the bottom frame (23) are driven by a shaft and a motor.

10. The anti-theft door welding machine capable of achieving uniform heating according to claim 1, characterized in that: The support assembly (4) further comprises a slide rail (41), the bottom of the base (1) corresponding to the support plate (44) is fixed with the slide rail (41), and two sliders (42) are slidably connected inside the slide rail (41), and the bottom of the connecting rod (43) is rotatably connected to the slider (42) via a rotating shaft.

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