Welding process for steel door production

Abstract

The invention relates to the technical field of steel door production, in particular to a welding process for steel door production, which comprises a base, a door frame and a cover plate, the door frame is placed above the base, the cover plate is placed above the door frame, a rail is fixedly mounted at the top of the base through screws, a first moving frame is slidably mounted above the rail, and a second moving frame is slidably mounted above the first moving frame. And the side wall of the track is provided with a tooth surface. In the welding process, the cover plate is extruded towards the door frame through the first disc and the second disc, so that the cover plate and the door frame are attached to each other at the welding position, it is guaranteed that no gap exists between the cover plate and the door frame at the welding position, and in the welding process, the cover plate is fixed through adsorption of the suction cups; and meanwhile, the phenomenon that when the first disc and the second disc extrude the cover plate, the welding position is staggered is avoided, through cooperation between the first movable frame and the second movable frame, after one edge is welded, repositioning is not needed, the welding work of the next edge can be directly conducted, and the welding work efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel door production, and in particular to a welding process for steel door production. Background Art

[0002] In modern industrial production, welding technology is an important means of connecting metal materials, especially in the production of steel doors. The quality of welding technology is directly related to the quality and service life of the product. Steel doors are usually used in clean rooms, laboratories and other places with extremely high environmental requirements, so the requirements for welding technology are more stringent. With the development of industrial automation and intelligence, welding robots and automated welding systems are more and more widely used in the production of steel doors. These systems can improve production efficiency and reduce labor costs, but there are also some disadvantages. For example, during the welding process, the door frame of the steel door is placed on the top of the door frame after the core material is filled. However, the existing welding robots and automatic welding systems directly use welding guns to weld the welding points between the cover plate and the door frame. However, after the core material is filled, the internal height of the door frame increases. After the cover plate is placed on the door frame, the cover plate and the door frame at the welding point are not in contact, which makes welding impossible. In addition, the welding point between the cover plate and the door frame is not fixed during welding, which causes the cover plate and the door frame to be misaligned during welding, resulting in the product being scrapped. In addition, when welding the cover plate and the door frame, the welding gun needs to be repositioned and the door frame needs to be rotated each time after welding one edge, and then welding is performed again. There are many steps, which affects efficiency. Summary of the invention

[0003] In order to solve the problems in the background technology, the present invention proposes a welding process for producing steel doors.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A welding process for producing steel doors comprises the following steps:

[0006] S1. Manually fill the interior of the door frame with core material, cut the cover plate so that the size of the cover plate is consistent with the size of the door frame, place the cover plate on the door frame filled with core material, place the door frame on top of the welding device for steel door production; and start the welding device for steel door production;

[0007] S2, starting the welding device for steel door production, so that the welding device for steel door production performs welding along the gap between the cover plate and the door frame;

[0008] S3. After the welding is completed, the welding device for steel door production is closed, the welded steel door is taken out manually, and the hinges, sealing strips, door handles and other related parts of the steel door side wall are installed;

[0009] The welding device for producing steel doors comprises a base, a cover plate and a door frame, the door frame is placed above the base, the cover plate is placed above the door frame, a track is fixedly installed on the top of the base by screws, a movable frame 1 is slidably installed above the track, a side wall of the track is provided with a tooth surface, two gear 1s are rotatably installed on the top of the movable frame 1, both of the two gear 1s are meshed with the tooth surface, a motor 1 is fixedly installed inside the movable frame 1, the output shaft of the motor 1 is fixedly connected with a gear 2, and the two gear 1s are meshed with the gear 2, a slide groove is integrally formed at the bottom of the track, a universal wheel is rotatably installed at the bottom of the movable frame 1, the universal wheel is movably installed inside the slide groove, a rack 1 and a slide rod 1 are integrally formed at the bottom of the movable frame 1, a movable block 1 is slidably installed on the outer peripheral wall of the slide rod 1, a motor 2 is fixedly installed inside the movable block 1, the output shaft of the motor 2 is fixedly connected with a gear 3, and the gear 3 is meshed with the rack 1.

[0010] In the above-mentioned welding process for producing steel doors, a moving frame 2 is slidably installed on the side wall of the moving block 1, and a sliding rod 2 is integrally formed on the side wall of the moving frame 2. The sliding rod 2 penetrates the moving block 1, and a screw is integrally formed on the side wall of the moving block 1. A gear screw sleeve is rotatably installed on the top of the moving frame 2, and the gear screw sleeve is rotatably installed on the outside of the screw.

[0011] In the above-mentioned welding process for producing steel doors, a motor three is fixedly installed on the bottom of the movable frame two, and a gear four is fixedly connected to the output shaft of the motor three. The gear four is meshed with the gear screw sleeve, and a welding gun rack is movably installed on the side wall of the movable frame two, and a spring one is provided between the welding gun rack and the side wall of the movable frame two, a welding gun one is slidably installed on the side wall of the welding gun rack, and a spring two is provided between the side wall of the welding gun one and the bottom of the welding gun rack.

[0012] In the above-mentioned welding process for producing steel doors, a first disc and a second disc are rotatably mounted on the bottom of the movable frame 2, the first disc and the second disc are located on both sides of the movable frame 2, and rolling frames are movably mounted inside the first disc and the second disc, a ball bearing is rotatably mounted on the bottom of the rolling frame, and a plurality of connecting seats 1 are integrally formed on the top of the rolling frame, and a connecting rod 1 is rotatably mounted on the side wall of each connecting seat 1.

[0013] In the above-mentioned welding process for producing steel doors, a plurality of connecting seats 2 are integrally formed inside the first disc and the second disc, and the connecting seats 2 are located at the top of the inner cavities of the first disc and the second disc, and the connecting seats 2 and the connecting seats correspond one to one. A connecting rod 2 is rotatably installed on the side wall of the connecting seat 2, and the connecting rod 2 and the connecting rod 1 are rotatably connected. A plurality of evenly distributed grinding blocks 1 and 2 are slidably installed on the bottom of the first disc and the second disc, respectively, and each of the connecting rods 2 is located above the grinding blocks 1 and 2. A spring 3 is provided between the grinding block 1 and the top of the inner cavity of the first disc, and the same spring 3 is also provided between the top of the grinding block 2 and the top of the inner cavity of the second disc.

[0014] In the above-mentioned welding process for producing steel doors, cylinders are rotatably installed on the side walls of the first disc and the second disc, and each of the cylinders is located on the side walls of the door frame. Pulley groove one and pulley groove three are respectively opened on the side walls of the first disc and the second disc, and belt two is arranged between the pulley groove one and the pulley groove three. Motor four is fixedly installed on the bottom of the movable frame two, and the output shaft of the motor four is fixedly connected to pulley one. Pulley groove two is opened on the side walls of the first disc, and belt one is arranged between the pulley groove one and the pulley groove two.

[0015] In the above-mentioned welding process for producing steel doors, a suction cup bin is fixedly installed on the side wall of the movable frame 2 by screws, and two rollers 1 and one roller 2 are rotatably installed inside the suction cup bin. The two rollers 1 are respectively located at the two ends of the suction cup bin, and the roller 2 is located between the two rollers 1 and close to one of the rollers 1. The outer movable sleeves of the rollers 1 and 2 are provided with suction cup conveyor belts.

[0016] In the above-mentioned welding process for producing steel doors, a plurality of evenly distributed suction cup racks are rotatably installed on the side wall of the suction cup conveyor belt, a suction cup 1 is slidably installed inside each of the suction cup racks, a leaf spring is provided between the top of each suction cup 1 and the suction cup rack, a scraper is rotatably installed on the side wall of the movable rack 2, the scraper is located above the cover plate and close to the side wall of the suction cup bin, and a torsion spring is provided at the connection between the scraper and the movable rack 2.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] 1. The present invention cooperates between the first disc, the second disc and the welding gun. During the welding process, the welding gun is located between the first disc and the second disc, and the first disc and the second disc rotate, and press the cover plate toward the door frame through the ball bearing, so that the cover plate and the door frame fit each other at the welding point. After the cover plate and the door frame fit together, the second grinding block deburrs the welding point to prevent the welding gun from jumping during the welding process. After the welding is completed, the first grinding block grinds the weld scar to ensure the overall sealing. At the same time, the welding gun is located between the first disc and the second disc, which can ensure that the cover plate and the door frame are always in contact at the position where the welding gun is welded, and no gap will appear, thereby avoiding the problem that the cover plate and the door frame at the welding point are not in contact, resulting in the inability to weld.

[0019] 2. The present invention cooperates with the first disc, the second disc and the suction cup. During the welding process, several suction cups continuously adsorb and lift the position close to the welding position of the cover plate. When the suction cups lift the cover plate, the first disc and the second disc squeeze the cover plate, so that the cover plate and the door frame fit each other at the welding position. At the same time, the welding position between the cover plate and the door frame will not be misaligned. The cover plate is fixed by the adsorption of the suction cups, and at the same time, the misalignment of the welding position when the first disc and the second disc squeeze the cover plate is avoided.

[0020] 3. The present invention cooperates between the movable frame 1 and the movable frame 2. When one edge is welded, the movable frame 1 continues to move. Through the rotation angle of the track and the cooperation of the two gears 1, the movable frame 1 drives the movable frame 2 to turn. During the turning process of the movable frame 2, the second disc fits the next welding edge, and the first disc continues to fit the original welding edge. At this time, the welding gun is located at the intersection of the two welding edges for welding. After welding one edge, there is no need to re-position and the welding work of the next edge can be carried out directly, thereby improving the welding work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of a welding device for steel door production according to the present invention;

[0022] Figure 2 It is a schematic diagram of the installation structure of the mobile frame 1, the mobile frame 2 and the mobile block 1 in the present invention;

[0023] Figure 3 It is a schematic diagram of the disassembled structure of the mobile frame 1 in the present invention;

[0024] Figure 4 It is a structural cross-sectional view of the movable frame 2 and the movable block 1 in the present invention;

[0025] Figure 5 It is a structural cross-sectional view of the suction cup bin in the present invention;

[0026] Figure 6It is a structural schematic diagram of a welding gun 1 and a welding gun stand in the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the first disc and the second disc in the present invention;

[0028] Figure 8 A structural cross-sectional view of the first disc and the second disc in the present invention;

[0029] Fig. 9 It is a structural schematic diagram of the rolling frame and the second connecting rod in the present invention;

[0030] Fig.10 It is a schematic diagram of the structure of the rolling frame in the present invention;

[0031] Fig.11 It is a structural schematic diagram of the grinding block 2 in the present invention;

[0032] Fig.12 It is a schematic structural diagram of grinding block 1 in the present invention.

[0033] In the figure: 1, base; 11, track; 111, tooth surface; 112, slide; 121, cover plate; 122, door frame; 21, gear 1; 22, gear 2; 221, motor 1; 23, moving frame 1; 231, slide bar 1; 232, rack 1; 233, universal wheel; 24, moving block 1; 241, screw; 242, gear 3; 243, motor 2; 31, moving frame 2; 311, scraper; 312, slide bar 2; 313, gear screw sleeve; 314, gear 4; 315, motor 3; 32, suction cup bin; 321, suction cup frame; 322, suction cup 1; 323, leaf spring; 3 24. Roller 1; 325. Suction cup conveyor belt; 326. Roller 2; 33. Welding gun 1; 331. Welding gun stand; 332. Spring 1; 333. Spring 2; 41. First disc; 411. Grinding block 1; 412. Pulley groove 1; 413. Pulley groove 2; 42. Second disc; 421. Grinding block 2; 422. Pulley groove 3; 43. Motor 4; 431. Pulley 1; 432. Belt 1; 433. Belt 2; 44. Rolling stand; 441. Connecting rod 1; 442. Connecting seat 1; 443. Connecting rod 2; 444. Ball bearing; 445. Connecting seat 2; 45. Cylinder; 451. Spring 3. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] Reference Figure 1 - Fig.12 As shown, a welding process for steel door production includes the following steps:

[0037] S1. After the door frame 122 is placed and fixed on the top of the base 1, the cover plate 121 is placed on the top of the door frame 122; after the placement is completed, the motor 243 and the motor 43 are started, the motor 243 drives the gear 3 242 to rotate, the gear 3 242 and the rack 1 232 are meshed, the moving block 1 24 drives the moving frame 2 31 to move along the slide bar 1 231 toward the cover plate 121, the motor 43 drives the pulley 1 431 to rotate, the pulley 1 431 drives the first disc 41 to rotate through the belt 1 432 and the pulley groove 1 412, the first disc 41 drives the second disc 42 to rotate through the belt 2 433 and the pulley groove 3 422, and when the bottoms of the first disc 41 and the second disc 42 contact the cover plate 121, the motor 2 243 is turned off;

[0038] S2. When the motor 243 is turned off, the motor 315 is started, and the motor 315 drives the gear 4 314 to rotate. The gear 4 314 is meshed with the gear screw sleeve 313, and the gear screw sleeve 313 rotates on the outer peripheral wall of the screw rod 241, so that the movable frame 2 31 moves along the slide rod 2 312 toward the door frame 122. When the cylinder 45 contacts the side wall of the door frame 122, the motor 315 is turned off, the motor 243 is started, and the movable frame 2 31 drives the first cylinder 45 to move toward the door frame 122. The disc 41, the second disc 42 and the suction cup bin 32 move downward, and when the top protrusions of the grinding block 1 411 and the grinding block 2 421 contact the bottom of the first disc 41 and the second disc 42, the motor 2 243 is turned off, and the suction cup frame 321 at the roller 2 326 squeezes the suction cup 1 322 through the leaf spring 323, so that the suction cup 1 322 at the roller 2 326 is adsorbed on the top of the cover plate 121, and the welding gun 1 33 contacts the gap between the cover plate 121 and the door frame 122;

[0039] S3. When the motor 243 is turned off again, the motor 121 is started, the welding gun 133 is started, the motor 121 drives the gear 22 to rotate, the gear 22 is meshed with the gear 121, the gear 121 is meshed with the tooth surface 111, so that the moving frame 123 follows the universal wheel 233 to move along the slide groove 112, and the moving frame 131 follows the moving frame 123 to move through the moving block 124. During the movement of the moving frame 123, the second disc 42 drives the grinding block 21 to rotate, so that the grinding block 21 grinds the gap between the cover plate 121 and the door frame 122 to remove burrs and prevent the welding gun 133 from jumping. The first disc 41 drives the grinding block 1411 to rotate, so that the grinding block 1411 grinds the weld scar after welding with the welding gun 133 to remove surface burrs;

[0040] The door frame 122 is placed above the base 1, and a cover plate 121 is placed above the door frame 122. The top of the base 1 is fixedly installed with a track 11 by screws, and a moving frame 23 is slidably installed above the track 11. The side wall of the track 11 is provided with a tooth surface 111. The top of the moving frame 23 is rotatably installed with two gears 21, and the two gears 21 are both meshed with the tooth surface 111. The inside of the moving frame 23 is fixedly installed with a motor 221, and the output shaft of the motor 221 is fixedly connected with a gear 22, and the two gears 21 are both meshed with the gear surface 111. The gear 22 is meshed with each other, the bottom of the track 11 is integrally formed with a slide groove 112, the bottom of the mobile frame 23 is rotatably installed with a universal wheel 233, the universal wheel 233 is movably installed inside the slide groove 112, the bottom of the mobile frame 23 is integrally formed with a rack 232 and a slide rod 231, the outer peripheral wall of the slide rod 231 is slidably installed with a moving block 24, the inside of the moving block 24 is fixedly installed with a motor 243, the output shaft of the motor 243 is fixedly connected with a gear 3 242, and the gear 3 242 and the rack 1 232 are meshed with each other.

[0041] Among them, the track 11 is located above the cover plate 121, and its length and width are greater than the door frame 122. When the motor 243 is started, the gear 3 242 and the rack 1 232 are meshed with each other, and the moving block 24 moves toward the cover plate 121 along the slide rod 1 231. When the motor 221 is started, the gear 22 drives the two gears 1 21 to rotate, and the two gears 1 21 are meshed with the tooth surface 111, and the moving frame 1 23 drives the universal wheel 233 to move along the slide groove 112.

[0042] like Figure 2 and Figure 4As shown, a moving frame 2 31 is slidably installed on the side wall of the moving block 1 24, a sliding rod 2 312 is integrally formed on the side wall of the moving frame 2 31, the sliding rod 2 312 penetrates the moving block 1 24, a screw 241 is integrally formed on the side wall of the moving block 1 24, a gear screw sleeve 313 is rotatably installed on the top of the moving frame 2 31, the gear screw sleeve 313 is rotatably installed on the outside of the screw 241, a motor 315 is fixedly installed on the bottom of the moving frame 2 31, and the output shaft of the motor 315 is fixedly connected to a gear 4 314, and the gear 4 314 and the gear screw sleeve 313 are meshed.

[0043] Among them, the working principle of the movable frame 2 31 is: when the motor 315 is started, the gear 4 314 and the gear screw sleeve 313 are meshed with each other, and the gear screw sleeve 313 rotates on the outside of the screw rod 241, and through the threaded cooperation, the movable frame 2 31 moves along the slide rod 2 312 toward the cover plate 121.

[0044] like Figure 2 , Figure 4 ,and Figure 7-10 As shown, a welding gun rack 331 is movably mounted on the side wall of the movable frame 31, a spring 332 is provided between the welding gun rack 331 and the side wall of the movable frame 31, a welding gun 33 is slidably mounted on the side wall of the welding gun rack 331, a spring 333 is provided between the side circumferential wall of the welding gun 33 and the bottom of the welding gun rack 331, a first disc 41 and a second disc 42 are rotatably mounted on the bottom of the movable frame 31, the first disc 41 and the second disc 42 are located on both sides of the movable frame 31, a rolling rack 44 is movably mounted inside the first disc 41 and the second disc 42, a ball bearing 444 is rotatably mounted on the bottom of the rolling rack 44, a plurality of connecting seats 442 are integrally formed on the top of the rolling rack 44, and a connecting rod 441 is rotatably mounted on the side wall of each connecting seat 442.

[0045] Among them, the welding gun 33 is located between the first disc 41 and the second disc 42. In the initial state, the two rolling frames 44 respectively penetrate the bottom of the first disc 41 and the second disc 42 and extend to the outside. When the first disc 41 and the second disc 42 enter the working state, the ball 444 contacts the cover plate 121, so that the rolling frame 44 shrinks toward the inside of the first disc 41 and the second disc 42, and drives the connecting rod 441 to move upward through the connecting seat 442.

[0046] like Figure 8 , Fig. 9 , Fig.11 and Fig.12As shown, a plurality of connecting seats 445 are integrally formed inside the first disk 41 and the second disk 42, and the connecting seat 445 is located at the top of the inner cavity of the first disk 41 and the second disk 42, and the connecting seat 445 and the connecting seat 1 442 correspond one to one, and a connecting rod 443 is rotatably installed on the side wall of the connecting seat 445, and the connecting rod 443 and the connecting rod 1 441 are rotatably connected, and a plurality of evenly distributed grinding blocks 1 411 and grinding blocks 2 421 are slidably installed on the bottom of the first disk 41 and the second disk 42, respectively, and each connecting rod 2 443 is located above the grinding blocks 1 411 and 421, and a spring 3 451 is provided between the grinding block 1 411 and the top of the inner cavity of the first disk 41, and the same spring 3 451 is also provided between the top of the grinding block 2 421 and the top of the inner cavity of the second disk 42.

[0047] Among them, the working principle of grinding block 1 411 and grinding block 2 421 is: when the rolling frame 44 drives the connecting rod 1 441 to move upward, the connecting rod 1 441 drives the connecting rod 2 443 to rotate around the connecting seat 2 445, so that several connecting rods 2 443 respectively contact the grinding block 1 411 and the grinding block 2 421, and the grinding block 1 411 and the grinding block 2 421 slide toward the outside of the first disc 41 and the second disc 42 respectively, and contact the welding point between the cover plate 121 and the door frame 122.

[0048] like Figure 4 , Figure 7 and Figure 8 As shown, cylinders 45 are rotatably mounted on the side walls of the first disk 41 and the second disk 42, and each cylinder 45 is located on the side wall of the door frame 122. Pulley groove 1 412 and pulley groove 3 422 are respectively provided on the side walls of the first disk 41 and the second disk 42, and a belt 2 433 is provided between the pulley groove 1 412 and the pulley groove 3 422. A motor 43 is fixedly mounted on the bottom of the movable frame 2 31, and the output shaft of the motor 43 is fixedly connected to a pulley 1 431. A pulley groove 2 413 is provided on the side wall of the first disk 41, and a belt 1 432 is provided between the pulley 1 431 and the pulley groove 2 413.

[0049] Among them, the working principle of the first disc 41 and the second disc 42 is: when the motor four 43 is started, the pulley one 431 drives the first disc 41 to rotate through the belt one 432, and the first disc 41 drives the second disc 42 to rotate through the belt two 433. During the rotation of the first disc 41 and the second disc 42, the cylinder 45 is tightly attached to the outside of the door frame 122, and the cylinder 45 is driven by the movement of the moving frame one 23. When the moving frame one 23 moves, the cylinder 45 rolls on the outside of the door frame 122.

[0050] like Figure 2 , Figure 4 and Figure 5As shown, a suction cup bin 32 is fixedly installed on the side wall of the movable frame 2 31 by screws, and two rollers 1 324 and a roller 2 326 are rotatably installed inside the suction cup bin 32, the two rollers 1 324 are respectively located at the two ends of the suction cup bin 32, and the roller 2 326 is located between the two rollers 1 324 and close to one of the rollers 1 324, and a suction cup conveyor belt 325 is movably sleeved on the outer sides of the rollers 1 324 and 2 326, and a plurality of evenly distributed suction cup racks 321 are rotatably installed on the side wall of the suction cup conveyor belt 325, and a suction cup 1 322 is slidably installed inside each suction cup rack 321, and a leaf spring 323 is provided between the top of each suction cup 1 322 and the suction cup rack 321, and a scraper 311 is rotatably installed on the side wall of the movable frame 2 31, and the scraper 311 is located above the cover plate 121 and close to the side wall of the suction cup bin 32, and a torsion spring is provided at the connection between the scraper 311 and the movable frame 2 31.

[0051] The working principle of the suction cup 1 322 is as follows: the suction cup bin 32 moves with the moving frame 2 31. When the moving frame 2 31 moves to the working position, the suction cup frame 321 under the roller 2 326 squeezes the leaf spring 323 so that the suction cup 1 322 adsorbs the cover plate 121. When the moving frame 1 23 moves along the slide groove 112, the moving frame 1 23 drives the moving frame 2 31 to move through the moving block 1 24, and the suction cup bin 32 moves. When the suction cup bin 32 moves, the suction cup 1 322 adsorbed on the cover plate 121 passes through the suction cup bin 32. The suction cup conveyor belt 325 is pulled by the suction cup frame 321, so that the suction cup conveyor belt 325 moves around the roller 1 324 and the roller 2 326. When the suction cup 1 322 is away from the bottom of the roller 2 326, the suction cup frame 321 moves upward and pulls the suction cup 1 322 through the leaf spring 323, so that the suction cup 1 322 pulls the cover 121 upward. When the suction cup 1 322 moves to the side wall of the scraper 311, the scraper 311 contacts the suction cup 1 322, so that the suction cup 1 322 is tilted and follows the movement of the suction cup frame 321 to separate from the cover 121.

[0052] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A welding process for steel door production, characterized in that: The following steps are involved: S1, manually filling the interior of the door frame (122) with core material, cutting the cover plate (121) so that the size of the cover plate (121) is consistent with the size of the door frame (122), placing the cover plate (121) on the door frame (122) filled with the core material, placing the door frame (122) above the welding device for steel door production; and starting the welding device for steel door production; S2, starting the welding device for steel door production so that the welding device for steel door production performs welding along the gap between the cover plate (121) and the door frame (122); S3. After the welding is completed, the welding device for steel door production is closed, the welded steel door is taken out manually, and the hinges, sealing strips, door handles and other related parts of the steel door side wall are installed; A welding device for producing steel doors comprises a base (1), a cover plate (121) and a door frame (122), wherein the door frame (122) is placed above the base (1), and the cover plate (121) is placed above the door frame (122); a track (11) is fixedly mounted on the top of the base (1) by screws, a movable frame (23) is slidably mounted on the top of the track (11), a side wall of the track (11) is provided with a tooth surface (111), two gears (21) are rotatably mounted on the top of the movable frame (23), and the two gears (21) are meshed with the tooth surface (111); a motor (221) is fixedly mounted inside the movable frame (23), and the output shaft of the motor (221) is fixedly connected to a gear. Wheel 2 (22), the two gears 1 (21) are meshed with gear 2 (22), the bottom of the track (11) is integrally formed with a slide groove (112), the bottom of the mobile frame 1 (23) is rotatably mounted with a universal wheel (233), the universal wheel (233) is movably mounted inside the slide groove (112), the bottom of the mobile frame 1 (23) is integrally formed with a rack 1 (232) and a slide bar 1 (231), the outer peripheral wall of the slide bar 1 (231) is slidably mounted with a moving block 1 (24), the inside of the moving block 1 (24) is fixedly mounted with a motor 2 (243), the output shaft of the motor 2 (243) is fixedly connected with a gear 3 (242), and the gear 3 (242) and the rack 1 (232) are meshed.

2. A welding process for producing steel doors according to claim 1, characterized in that: The side wall of the moving block 1 (24) is slidably mounted with a moving frame 2 (31), the side wall of the moving frame 2 (31) is integrally formed with a sliding rod 2 (312), the sliding rod 2 (312) penetrates the moving block 1 (24), the side wall of the moving block 1 (24) is integrally formed with a screw rod (241), the top of the moving frame 2 (31) is rotatably mounted with a gear screw sleeve (313), and the gear screw sleeve (313) is rotatably mounted on the outer side of the screw rod (241).

3. A welding process for producing steel doors according to claim 2, characterized in that: A motor three (315) is fixedly mounted on the bottom of the second moving frame (31), and a gear four (314) is fixedly connected to the output shaft of the motor three (315), and the gear four (314) is meshed with the gear screw sleeve (313). A welding gun rack (331) is movably mounted on the side wall of the second moving frame (31), and a spring one (332) is arranged between the welding gun rack (331) and the side wall of the second moving frame (31). A welding gun one (33) is slidably mounted on the side wall of the welding gun rack (331), and a spring two (333) is arranged between the side peripheral wall of the welding gun one (33) and the bottom of the welding gun rack (331).

4. A welding process for producing steel doors according to claim 2, characterized in that: A first disc (41) and a second disc (42) are rotatably mounted on the bottom of the second moving frame (31); the first disc (41) and the second disc (42) are located on both sides of the second moving frame (31); a rolling frame (44) is movably mounted inside the first disc (41) and the second disc (42); a ball bearing (444) is rotatably mounted on the bottom of the rolling frame (44); a plurality of connecting seats (442) are integrally formed on the top of the rolling frame (44); and a connecting rod (441) is rotatably mounted on the side wall of each connecting seat (442).

5. A welding process for producing steel doors according to claim 4, characterized in that: A plurality of second connecting seats (445) are integrally formed inside the first disk (41) and the second disk (42). The second connecting seat (445) is located at the top of the inner cavity of the first disk (41) and the second disk (42). The second connecting seat (445) corresponds to the first connecting seat (442) one by one. A second connecting rod (443) is rotatably mounted on the side wall of the second connecting seat (445). The second connecting rod (443) is rotatably connected to the first connecting rod (441). The first disk (4 1) A plurality of evenly distributed grinding blocks 1 (411) and 2 (421) are slidably mounted on the bottom of the second disc (42), each of the connecting rods 2 (443) is located above the grinding blocks 1 (411) and 2 (421), a spring 3 (451) is arranged between the grinding block 1 (411) and the top of the inner cavity of the first disc (41), and a similar spring 3 (451) is also arranged between the top of the grinding block 2 (421) and the top of the inner cavity of the second disc (42).

6. A welding process for producing steel doors according to claim 4, characterized in that: The side walls of the first disk (41) and the second disk (42) are both rotatably mounted with cylinders (45), and each of the cylinders (45) is located on the side wall of the door frame (122). The side walls of the first disk (41) and the second disk (42) are respectively provided with a pulley groove 1 (412) and a pulley groove 3 (422), and a belt 2 (433) is provided between the pulley groove 1 (412) and the pulley groove 3 (422). The bottom of the movable frame 2 (31) is fixedly mounted with a motor 4 (43), and the output shaft of the motor 4 (43) is fixedly connected with a pulley 1 (431). The side walls of the first disk (41) are provided with a pulley groove 2 (413), and a belt 1 (432) is provided between the pulley 1 (431) and the pulley groove 2 (413).

7. A welding process for producing steel doors according to claim 2, characterized in that: A suction cup bin (32) is fixedly mounted on the side wall of the movable frame 2 (31) by screws, and two rollers 1 (324) and one roller 2 (326) are rotatably mounted inside the suction cup bin (32), the two rollers 1 (324) are respectively located at two ends of the suction cup bin (32), the roller 2 (326) is located between the two rollers 1 (324) and close to one of the rollers 1 (324), and a suction cup conveyor belt (325) is movably sleeved on the outer sides of the rollers 1 (324) and 2 (326).

8. A welding process for producing steel doors according to claim 7, characterized in that: A plurality of evenly distributed suction cup racks (321) are rotatably mounted on the side wall of the suction cup conveyor belt (325), a suction cup 1 (322) is slidably mounted inside each suction cup rack (321), a leaf spring (323) is provided between the top of each suction cup 1 (322) and the suction cup rack (321), a scraper (311) is rotatably mounted on the side wall of the movable rack (31), the scraper (311) is located above the cover plate (121) and close to the side wall of the suction cup bin (32), and a torsion spring is provided at the connection between the scraper (311) and the movable rack (31).

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