Welding device for security door

Abstract

The welding device comprises a base, stroke grooves which are symmetrically distributed are formed in the upper surface of the base, a servo motor is fixedly installed on the inner bottom wall of the base, a worm is fixedly installed on an output shaft of the servo motor through a coupler, and two-way lead screws are installed on the inner walls of the two sides of the base through bearings. The outer surface of the bidirectional lead screw is in threaded connection with threaded blocks which are symmetrically distributed, and one end of each threaded block penetrates through the stroke groove and extends to the upper surface of the base. By means of the clamping and overturning mechanism, an anti-theft door can be automatically and rapidly clamped and limited, the anti-theft door can be driven to be positioned and overturned, the overturning track is reduced, and the overturning efficiency is improved. Therefore, the space requirement is lowered, full-process automatic operation is achieved, and the welding efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a welding device for anti-theft doors. Background Art

[0002] The full name of anti-theft door is anti-theft safety door, it has both anti-theft and safety performance, and the locks used on anti-theft doors must be special anti-theft door locks with anti-drilling function that have passed the inspection of the Testing Center of the Ministry of Public Security. Anti-theft doors can be made of different materials, but only those that have passed the standard inspection and obtained the production permit for security products can be called anti-theft doors. Due to the increasing maturity of welding technology, anti-theft doors are mostly connected by welding at the metal connection parts. Although the welding head can be moved more flexibly, the trolley is generally not convenient to move. The anti-theft door is large in size. After welding one side of the anti-theft door, it is necessary to manually flip the anti-theft door and then weld the other side. This process is somewhat dangerous.

[0003] For example, a welding device for anti-theft doors disclosed in a Chinese patent document (publication number: CN212761817U) uses the output shaft of the motor to drive the motor gear to rotate, and the motor gear also drives the reduction gear and wheel gear meshing with it to rotate, the reduction gear drives the drive shaft to rotate, the drive shaft drives the drive gear to rotate, the drive gear drives the toothed arm to rotate, the toothed arm drives the main rotating column and the plug block to rotate, the main rotating column drives the main frame and the right-angle frame on the main frame to rotate around the main rotating column, and the plug block drives the auxiliary rotating column, the auxiliary frame, and the right-angle frame on the auxiliary frame to rotate around The main rotating column rotates, and the anti-theft door flips with it. However, this method has a large flipping trajectory, high requirements on welding space, and the welding position needs to be changed after flipping. In addition, when installing the anti-theft door, it is necessary to repeatedly pull out the pin connecting the toothed arm and the plug block, pull out the plug block, and take out the sub-frame, sub-rotating column and the right-angle frame on the sub-frame together. The anti-theft door is installed on the main frame, and one side of the anti-theft door is fixed by the right-angle frame on the main frame, and the plug block, sub-frame and sub-rotating column that have just been removed are reinstalled. The operation is cumbersome and greatly reduces the problem of welding efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a welding device for anti-theft doors to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a welding device for anti-theft doors, comprising a base, the upper surface of the base is provided with symmetrically distributed travel grooves, a servo motor is fixedly installed on the inner bottom wall of the base, a worm is fixedly installed on the output shaft of the servo motor through a coupling, two-way screws are installed on the inner walls of both sides of the base through bearings, the outer surface of the two-way screw is threadedly connected with symmetrically distributed thread blocks, one end of the thread block passes through the travel groove and extends to the upper surface of the base;

[0006] The outer surface of the bidirectional screw rod is provided with a clamping and flipping mechanism, and the clamping and flipping mechanism comprises a worm wheel, and the inner wall of the worm wheel is fixedly sleeved with the outer surface of the bidirectional screw rod.

[0007] Preferably, the tooth surface of the worm wheel meshes with the outer surface of the worm, and the upper surface of the threaded block is fixedly connected to a mounting plate.

[0008] Preferably, a connecting rod is installed on the inner wall of the mounting plate via a bearing, a gear is fixedly sleeved on the outer surface of one end of the connecting rod, and a first servo electric cylinder is fixedly installed on one side surface of the mounting plate.

[0009] Preferably, one end of the piston rod of the first servo electric cylinder is fixedly connected to a rack, the tooth surface of the rack is meshed with the tooth surface of the gear, and the other end of the connecting rod is fixedly connected to a mounting block.

[0010] Preferably, the opposing surfaces of the two mounting blocks are fixedly connected with right-angle brackets that are symmetrically distributed, and the upper surface of the base is fixedly connected with guide rods that are distributed in a rectangular array.

[0011] Preferably, the outer surfaces of the plurality of guide rods are movably sleeved with a welding platform, and the upper surface of the base is fixedly mounted with a second servo electric cylinder.

[0012] Preferably, one end of the piston rod of the second servo electric cylinder is fixedly connected to the lower surface of the welding table.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the clamping and flipping mechanism can realize the automatic and rapid clamping and limiting of the anti-theft door, and can drive the anti-theft door to be positioned and flipped, thereby shortening the flipping trajectory and reducing space requirements, and the whole process is automated, which greatly improves the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 A three-dimensional diagram of the welding table structure of a welding device for anti-theft doors proposed by the utility model;

[0016] Figure 3 A three-dimensional diagram of the base structure of a welding device for anti-theft doors proposed by the utility model;

[0017] Figure 4 This is a three-dimensional diagram of the mounting plate structure of a welding device for anti-theft doors proposed by the utility model.

[0018] In the figure: 1. base; 2. travel groove; 3. servo motor; 4. worm; 5. bidirectional lead screw; 6. threaded block; 7. worm wheel; 71. mounting plate; 72. connecting rod; 73. gear; 74. first servo electric cylinder; 75. rack; 76. mounting block; 77. right angle bracket; 78. guide rod; 79. welding table; 710. second servo electric cylinder. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 4 The utility model provides a technical solution: a welding device for anti-theft doors, comprising a base 1, the upper surface of the base 1 is provided with symmetrically distributed travel grooves 2, a servo motor 3 is fixedly installed on the inner bottom wall of the base 1, a worm 4 is fixedly installed on the output shaft of the servo motor 3 through a coupling, two-way screw rods 5 are installed on the inner walls of both sides of the base 1 through bearings, and the outer surface of the two-way screw rod 5 is threadedly connected with symmetrically distributed thread blocks 6, one end of the thread block 6 passes through the travel groove 2 and extends to the upper surface of the base 1;

[0021] The outer surface of the bidirectional screw rod 5 is provided with a clamping and flipping mechanism, which includes a worm wheel 7 , and the inner wall of the worm wheel 7 is fixedly sleeved with the outer surface of the bidirectional screw rod 5 .

[0022] Furthermore, the tooth surface of the worm wheel 7 meshes with the outer surface of the worm 4, and the upper surface of the threaded block 6 is fixedly connected to a mounting plate 71. The servo motor 3 drives the worm 4 to rotate clockwise and counterclockwise. The rotation of the worm 4 drives the bidirectional lead screw 5 to rotate through the worm wheel 7, and the self-locking characteristics of the worm 4 and the worm wheel 7 improve the stability of the bidirectional lead screw 5 after it stops rotating.

[0023] Furthermore, a connecting rod 72 is installed on the inner wall of the mounting plate 71 through a bearing, a gear 73 is fixedly sleeved on the outer surface of one end of the connecting rod 72, and a first servo electric cylinder 74 is fixedly installed on the one side surface of the mounting plate 71. The rotation of the gear 73 is coordinated with the bearing to position and rotate the connecting rod 72.

[0024] Furthermore, one end of the piston rod of the first servo electric cylinder 74 is fixedly connected to a rack 75, the tooth surface of the rack 75 meshes with the tooth surface of the gear 73, and the other end of the connecting rod 72 is fixedly connected to a mounting block 76. The telescopic movement of the piston rod of the first servo electric cylinder 74 drives the rack 75 to move, and the movement of the rack 75 drives the meshing gear 73 to rotate.

[0025] Furthermore, the opposite surfaces of the two mounting blocks 76 are fixedly connected with symmetrically distributed right-angle brackets 77, and the upper surface of the base 1 is fixedly connected with guide rods 78 distributed in a rectangular array. The right-angle brackets 77 serve to limit the four right angles of the anti-theft door.

[0026] Furthermore, the outer surfaces of the plurality of guide rods 78 are movably sleeved with welding tables 79 , and the upper surface of the base 1 is fixedly mounted with a second servo electric cylinder 710 , so that the guide rods 78 cooperate with the welding table 79 to stably lift and lower the movement.

[0027] Furthermore, one end of the piston rod of the second servo electric cylinder 710 is fixedly connected to the lower surface of the welding table 79, and the telescopic movement of the piston rod of the second servo electric cylinder 710 drives the welding table 79 to move up and down.

[0028] Through the clamping and flipping mechanism, the anti-theft door can be clamped and limited automatically and quickly, and the anti-theft door can be driven to be positioned and flipped, which shortens the flipping trajectory and reduces the space requirement. The whole process is automated, which greatly improves the welding efficiency.

[0029] Working principle: Step 1, place the anti-theft door to be welded at the center above the welding table 79, and start the servo motor 3 to drive the worm 4 to rotate clockwise, the rotation of the worm 4 drives the bidirectional screw 5 to rotate through the meshing worm wheel 7, the rotation of the bidirectional screw 5 drives the two mounting plates 71 to move relative to each other through the cooperation of the threaded block 6 and the stroke groove 2, thereby driving the right-angle frame 77 to move and insert into the right angle of the anti-theft door for limiting, at this time, one of the surfaces of the anti-theft door is welded;

[0030] Step 2. When one of the surfaces is welded, start the piston rod of the second servo electric cylinder 710 to retract, thereby causing the welding table 79 to move downward through the cooperation of the guide rod 78. At this time, start the piston rod of the first servo electric cylinder 74 to extend, and drive the meshing gear 73 to rotate through the movement of the rack 75. The rotation of the gear 73 drives the mounting plate 71 to rotate, and the rotation of the mounting plate 71 drives the limited anti-theft door to position and flip through the right-angle frame 77. When the piston rod of the first servo electric cylinder 74 is fully extended, the mounting plate 71 drives the anti-theft door to flip 180 degrees through the right-angle frame 77. Finally, start the piston rod of the second servo electric cylinder 710 to extend, thereby driving the welding table 79 to rise and move to the bottom of the anti-theft door, and then start welding on the other side of the anti-theft door.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for an anti-theft door, comprising a base (1), characterized in that: The upper surface of the base (1) is provided with symmetrically distributed travel grooves (2); a servo motor (3) is fixedly mounted on the inner bottom wall of the base (1); a worm (4) is fixedly mounted on the output shaft of the servo motor (3) via a coupling; bidirectional screw rods (5) are mounted on the inner walls of both sides of the base (1) via bearings; the outer surface of the bidirectional screw rod (5) is threadedly connected with symmetrically distributed thread blocks (6); one end of the thread block (6) passes through the travel groove (2) and extends to the upper surface of the base (1); The outer surface of the bidirectional screw rod (5) is provided with a clamping and flipping mechanism, the clamping and flipping mechanism comprising a worm wheel (7), the inner wall of the worm wheel (7) being fixedly sleeved with the outer surface of the bidirectional screw rod (5).

2. A welding device for anti-theft doors according to claim 1, characterized in that: The tooth surface of the worm wheel (7) meshes with the outer surface of the worm (4), and the upper surface of the threaded block (6) is fixedly connected to a mounting plate (71).

3. A welding device for anti-theft doors according to claim 2, characterized in that: A connecting rod (72) is mounted on the inner wall of the mounting plate (71) via a bearing, a gear (73) is fixedly sleeved on the outer surface of one end of the connecting rod (72), and a first servo electric cylinder (74) is fixedly mounted on a side surface of the mounting plate (71).

4. A welding device for anti-theft doors according to claim 3, characterized in that: One end of the piston rod of the first servo electric cylinder (74) is fixedly connected to a rack (75), the tooth surface of the rack (75) meshes with the tooth surface of the gear (73), and the other end of the connecting rod (72) is fixedly connected to a mounting block (76).

5. A welding device for anti-theft doors according to claim 4, characterized in that: The opposing surfaces of the two mounting blocks (76) are fixedly connected with right-angle brackets (77) that are symmetrically distributed, and the upper surface of the base (1) is fixedly connected with guide rods (78) that are distributed in a rectangular array.

6. A welding device for anti-theft doors according to claim 5, characterized in that: The outer surfaces of the plurality of guide rods (78) are all movably sleeved with a welding platform (79), and the upper surface of the base (1) is fixedly mounted with a second servo electric cylinder (710).

7. A welding device for anti-theft doors according to claim 6, characterized in that: One end of the piston rod of the second servo electric cylinder (710) is fixedly connected to the lower surface of the welding table (79).

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