PLC electrical cabinet for automobile welding production line

Abstract

The invention discloses a PLC electrical cabinet for an automobile welding production line, and relates to the technical field of PLC electrical cabinets. The PLC electrical cabinet for the automobile welding production line comprises a PLC electrical cabinet body, a rectangular groove communicated with the PLC electrical cabinet body is formed in the right side of the PLC electrical cabinet body, a heat dissipation device is arranged on the PLC electrical cabinet body, a fire extinguishing device is arranged on the PLC electrical cabinet body and comprises a protection box, the protection box is fixedly connected to the upper surface of the PLC electrical cabinet body, and the protection box is fixedly connected to the lower surface of the PLC electrical cabinet body. Two servo motors are started, the rotation directions of the two servo motors are consistent, the two servo motors drive two second threaded rods to rotate, then two second moving sleeves and two connecting blocks are driven to move downwards, then a moving pipe is driven to move downwards, and the interior of the PLC electrical cabinet body is subjected to rapid fire extinguishing treatment in cooperation with dry powder discharged by a plurality of dust outlet pipes; therefore, automatic fire extinguishing is realized, and the use safety of the PLC electrical cabinet for the automobile welding production line is improved.

Description

Technical Field

[0001] The invention relates to the technical field of PLC electrical cabinets, and in particular to a PLC electrical cabinet for an automobile welding production line. Background Art

[0002] In the electronic control system of the automobile welding production line, the PLC control cabinet is mainly used to complete equipment automation and process automation control. It has the characteristics of stable network function, good performance, scalability and strong anti-interference, and is the core of modern industry.

[0003] In the prior art, the PLC electrical cabinet for the automobile welding production line is usually installed in the distribution room, and the distribution room is only equipped with a fire extinguisher and a smoke alarm. When a fire occurs inside the electrical cabinet in the distribution room, the smoke alarm is triggered, and personnel are required to go to the distribution room and use the fire extinguisher to extinguish the burning electrical cabinet. There is a certain amount of time between the arrival of the personnel and the use of the fire extinguisher to extinguish the fire, which will cause the best time for fire extinguishing to be missed, thereby causing the fire to spread and increase losses. It may also cause the equipment on the automobile welding production line to execute wrong instructions, causing damage to the equipment or products on the production line. Summary of the invention

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a PLC electrical cabinet for an automobile welding production line, comprising: PLC electrical cabinet body; A heat dissipation device, the heat dissipation device is arranged on the PLC electrical cabinet body; A fire extinguishing device is arranged on the PLC electrical cabinet body, and comprises a protection box, which is fixedly connected to the upper surface of the PLC electrical cabinet body, and the front and rear inner walls of the protection box are fixedly connected with connecting plates, and the opposite surfaces of the two connecting plates are fixedly connected with storage boxes; The storage box is used for storing dry powder. Two feeding pipes are fixedly connected to the upper surface of the storage box. The upper ends of the two feeding pipes pass through the upper surface of the protection box. The two feeding pipes are provided with protective covers. Among them, a moving pipe that can move up and down is arranged in the PLC electrical cabinet body, the moving pipe is connected with the storage box, the moving pipe is arranged horizontally, and is used to discharge the dry powder, and the front and rear surfaces of the PLC electrical cabinet body are fixedly connected with a rectangular box; the rectangular box is used to drive the moving pipe to move up and down; Among them, the two rectangular boxes are connected to the PLC electrical cabinet body, and the upper surfaces of the two rectangular boxes are fixedly installed with servo motors; A smoke alarm is fixedly installed on the top of the PLC electrical cabinet body, and an open flame sensor is fixedly installed on the top of the PLC electrical cabinet body. When the open flame sensor detects an open flame, the fire extinguishing device is controlled to automatically extinguish the fire.

[0005] Preferably, an air pump is fixedly installed at the bottom of the protection box, an output end of the air pump is fixedly connected to an air pipe, and the air pipe is fixedly connected to the storage box; The gas supply pipe is connected to the storage box, and a plurality of connecting pipes connected to the storage box are fixedly connected to the lower surface of the storage box, and the plurality of connecting pipes all penetrate into the interior of the PLC electrical cabinet body.

[0006] Preferably, a servo motor is fixedly installed at the upper ends of the two rectangular boxes, and the output ends of the servo motors rotate and penetrate into the interior of the corresponding rectangular box respectively, and the output ends of the two servo motors are fixedly connected to the second threaded rod; The lower ends of the two second threaded rods are rotatably connected to the bottoms of the corresponding rectangular boxes respectively.

[0007] Preferably, the outer walls of the two second threaded rods are both threadedly sleeved with second moving sleeves, the opposite surfaces of the two second moving sleeves are fixedly connected with connecting blocks, and the moving tube is fixedly installed between the opposite surfaces of the two connecting blocks and the moving tube; The upper surface of the moving tube is fixedly connected with a plurality of telescopic hoses communicating therewith, and the upper ends of the plurality of telescopic hoses are respectively fixedly connected with corresponding connecting tubes.

[0008] Preferably, the plurality of telescopic hoses are respectively communicated with corresponding connecting pipes, and the right side of the movable pipe is fixedly connected with a plurality of dust outlet pipes communicated with the movable pipe.

[0009] Preferably, the heat dissipation device includes a dust cover, which is fixedly mounted on the right side of the PLC electrical cabinet body, and the front and rear surfaces of the dust cover are fixedly connected to a mounting box; Among them, motors are fixedly installed inside the two installation boxes, and the output ends of the two motors are fixedly connected to first threaded rods. The upper ends of the two first threaded rods are rotated to penetrate the upper surfaces of the corresponding installation boxes.

[0010] Preferably, the outer walls of the two first threaded rods are both threadedly sleeved with first movable sleeves, and the opposite surfaces of the two first movable sleeves are fixedly connected with concave fixing plates; Wherein, the two concave fixing plates are fixedly connected with baffles on the opposite sides away from the first movable sleeve, and the lower ends of the baffles slide and penetrate into the interior of the PLC electrical cabinet body.

[0011] Preferably, the heat dissipation device further comprises a plurality of heat sinks, a rectangular groove communicating with the PLC electrical cabinet body is provided on the right side thereof, the plurality of heat sinks are fixedly mounted on the inner wall of the rectangular groove, and a heat dissipation fan is fixedly mounted on the inner wall of the dust cover; Among them, the input end of the cooling fan is connected to the PLC electrical cabinet body, and the cooling fan is located on the right side of the baffle.

[0012] Preferably, a plurality of mounting plates are fixedly connected to the front and rear inner walls of the PLC electrical cabinet body, and the plurality of mounting plates are used for mounting electronic components; Among them, the rear surfaces of multiple mounting plates are all in contact with multiple heat sinks, a protective door is arranged on the left side of the PLC electrical cabinet body, an opening and closing button is arranged on the protective door, a display screen is arranged on the protective door, a control button for an automobile welding robot arm is arranged on the protective door, and a control button for an automobile welding parts feeding equipment is arranged on the protective door.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (0) The PLC electrical cabinet used in the automobile welding production line is equipped with a movable tube that can move up and down. When a fire occurs, the direction and height of dry powder discharge can be accurately controlled to quickly extinguish the fire inside the PLC electrical cabinet. In combination with a smoke alarm and an open flame sensor, it can also realize an automatic fire extinguishing function, thereby improving the safety of the PLC electrical cabinet used in the automobile welding production line during use.

[0014] (1) The automobile welding production line uses a PLC electrical cabinet. The motors inside the two installation boxes are started and move in the direction of rotation. The two motors drive the two first threaded rods to rotate. The two first threaded rods drive the two first moving sleeves and the two concave fixed plates to move downward. The two concave fixed plates drive the baffle to move downward, which blocks the rectangular groove, thereby making the interior of the PLC electrical cabinet a closed space to prevent the fire from spreading outward, and also increasing the speed of dry powder in extinguishing the fire.

[0015] (2) The PLC electrical cabinet used in the automobile welding production line is provided with multiple mounting plates and heat sinks. The heat sinks can quickly transfer the heat generated by the electronic components to the multiple heat sinks through the mounting plates. Together with the cooling fan, the heat can be effectively dissipated inside the PLC electrical cabinet body, thereby improving the heat dissipation efficiency of the PLC electrical cabinet body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a right schematic diagram of the present invention as a whole; Figure 3 Schematic diagram of the connection between the telescopic hose and the movable pipe of the present invention Figure 4 The internal schematic diagram of the protective box of the present invention Figure 5 Schematic diagram of the connection between the second movable sleeve and the second threaded rod of the present invention Figure 6The right side schematic diagram of the PLC electrical cabinet of the present invention Figure 7 It is a schematic diagram of the connection between the heat sink and the rectangular groove of the present invention.

[0017] Figure numerals: 1. PLC electrical cabinet body; 2. protective door; 3. protective box; 4. feed pipe; 5. concave fixing plate; 6. baffle; 7. servo motor; 8. rectangular box; 9. first movable sleeve; 10. dust cover; 11. first threaded rod; 12. mounting box; 13. connecting pipe; 14. smoke alarm; 15. mounting plate; 16. movable pipe; 17. telescopic hose; 18. open flame sensor; 19. gas pipe; 20. storage box; 21. air pump; 22. connecting plate; 23. second movable sleeve; 24. connecting block; 25. second threaded rod; 26. dust exhaust pipe; 27. cooling fan; 28. heat sink; 29. ​​rectangular groove; 30. display screen; 31. automobile welding robot arm control button; 32. automobile welding parts feeding equipment control button. DETAILED DESCRIPTION

[0018] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are 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, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] In the description of the present invention, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0021] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0022] See also Figure 1-Figure 7The present invention provides a technical solution: a PLC electrical cabinet for an automobile welding production line, comprising a PLC electrical cabinet body 1, a rectangular slot 29 communicating with the PLC electrical cabinet body 1 is provided on the right side of the PLC electrical cabinet body 1, and a heat dissipation device is arranged on the PLC electrical cabinet body 1; A fire extinguishing device is arranged on the PLC electrical cabinet body 1, and comprises a protection box 3, which is fixedly connected to the upper surface of the PLC electrical cabinet body 1, and the front and rear inner walls of the protection box 3 are fixedly connected with connecting plates 22, and the opposite surfaces of the two connecting plates 22 are fixedly connected with storage boxes 20; The storage box 20 is used for storing dry powder. Two feeding pipes 4 are fixedly connected to the upper surface of the storage box 20. The upper ends of the two feeding pipes 4 pass through the upper surface of the protection box 3. The two feeding pipes 4 are provided with protective covers. Among them, the front and rear surfaces of the PLC electrical cabinet body 1 are fixedly connected with a rectangular box 8; The two rectangular boxes 8 are both connected to the PLC electrical cabinet body 1 , and the servo motors 7 are fixedly mounted on the upper surfaces of the two rectangular boxes 8 .

[0023] Furthermore, an air pump 21 is fixedly installed at the bottom of the protection box 3, and an output end of the air pump 21 is fixedly connected to an air delivery pipe 19, and the air delivery pipe 19 is fixedly connected to the storage box 20; The gas delivery pipe 19 is in communication with the storage box 20 , and a plurality of connecting pipes 13 in communication with the storage box 20 are fixedly connected to the lower surface of the storage box 20 , and the plurality of connecting pipes 13 all penetrate into the interior of the PLC electrical cabinet body 1 .

[0024] Furthermore, the output ends of the two servo motors 7 rotate and penetrate into the corresponding rectangular box 8, and the output ends of the two servo motors 7 are fixedly connected with the second threaded rod 25; The lower ends of the two second threaded rods 25 are rotatably connected to the bottoms of the corresponding rectangular boxes 8 .

[0025] Furthermore, the outer walls of the two second threaded rods 25 are both threadedly sleeved with second moving sleeves 23, the opposite surfaces of the two second moving sleeves 23 are fixedly connected with connecting blocks 24, and the opposite surfaces of the two connecting blocks 24 are fixedly connected with moving tubes 16; The upper surface of the moving tube 16 is fixedly connected with a plurality of telescopic hoses 17 communicating therewith, and the upper ends of the plurality of telescopic hoses 17 are fixedly connected with the corresponding connecting tubes 13 , respectively.

[0026] Furthermore, a plurality of telescopic hoses 17 are respectively connected to the corresponding connecting pipes 13, and a plurality of dust outlet pipes 26 connected thereto are fixedly connected to the right side of the movable pipe 16; Among them, a smoke alarm 14 is fixedly installed on the top of the PLC electrical cabinet body 1, and an open fire sensor 18 is fixedly installed on the top of the PLC electrical cabinet body 1.

[0027] Further, the heat dissipation device includes a dust cover 10, which is fixedly mounted on the right side of the PLC electrical cabinet body 1, and the front and rear surfaces of the dust cover 10 are fixedly connected to the mounting box 12; Among them, motors are fixedly installed inside the two installation boxes 12, and the output ends of the two motors are fixedly connected to the first threaded rods 11. The upper ends of the two first threaded rods 11 rotate and penetrate the upper surfaces of the corresponding installation boxes 12 respectively.

[0028] Furthermore, the outer walls of the two first threaded rods 11 are both threadedly sleeved with first movable sleeves 9, and the opposite surfaces of the two first movable sleeves 9 are both fixedly connected with concave fixing plates 5; The two concave fixing plates 5 are fixedly connected to the opposite surfaces away from the first movable sleeve 9 with a baffle 6 , and the lower end of the baffle 6 slides through the interior of the PLC electrical cabinet body 1 .

[0029] Furthermore, the heat dissipation device further includes a plurality of heat sinks 28, and the plurality of heat sinks 28 are fixedly mounted on the inner wall of the rectangular groove 29, and a heat dissipation fan 27 is fixedly mounted on the inner wall of the dust cover 10; The input end of the cooling fan 27 is connected to the PLC electrical cabinet body 1 , and the cooling fan 27 is located on the right side of the baffle 6 .

[0030] Furthermore, a plurality of mounting plates 15 are fixedly connected to the front and rear inner walls of the PLC electrical cabinet body 1, and the plurality of mounting plates 15 are used to control the installation of electronic components of the equipment running on the automobile welding production line; Among them, the rear surfaces of multiple mounting plates 15 are all in contact with multiple heat sinks 28, a protective door 2 is arranged on the left side of the PLC electrical cabinet body 1, an opening and closing button is arranged on the protective door 2, a display screen 30 is arranged on the protective door 2, an automobile welding robot arm control button 31 is arranged on the protective door 2, and an automobile welding parts feeding equipment control button 32 is arranged on the protective door 2.

[0031] Furthermore, when a fire occurs inside the PLC electrical cabinet body 1, the open flame sensor 18 and the smoke alarm 14 will sense the open flame or smoke in the PLC electrical cabinet body 1, and send signals to the air pump 21 and the two servo motors 7 and the motors inside the two installation boxes 12; The motors inside the two installation boxes 12 are automatically started by the signal, and the rotation direction thereof moves. The two motors drive the two first threaded rods 11 to rotate, and the two first threaded rods 11 drive the two first movable sleeves 9 and the two concave fixing plates 5 to move downward, and the two concave fixing plates 5 drive the baffle 6 to move downward, thereby blocking the rectangular groove 29, thereby making the interior of the PLC electrical cabinet body 1 in a closed space, preventing the fire from spreading outward, and also increasing the speed of the dry powder in extinguishing the fire; At the same time, the air pump 21 automatically starts upon receiving the signal, and the air pump 21 inputs the generated gas into the storage box 20 through the gas pipe 19. The gas drives the dry powder in the storage box 20 to be input into the moving pipe 16 through the multiple connecting pipes 13 and the telescopic hose 17, and is discharged through the multiple dust outlet pipes 26. Among them, two servo motors 7 are started at the same time, and their rotation directions are consistent. The two servo motors 7 drive the two second threaded rods 25 to rotate, and then drive the two second moving sleeves 23 and the two connecting blocks 24 to move downward, and then drive the moving tube 16 to move downward, and cooperate with the dry powder discharged by the multiple dust outlet pipes 26 to quickly extinguish the fire inside the PLC electrical cabinet body 1, thereby realizing automatic fire extinguishing, and improving the safety of the PLC electrical cabinet used in the automobile welding production line when in use; Among them, the external power supply for the electronic components on the heat dissipation device and the fire extinguishing device in this application is a battery, which is powered separately and does not share a line with the PLC electrical cabinet body 1. When a fire occurs and the power is cut off, the battery can also power the electronic components on the heat dissipation device and the fire extinguishing device.

[0032] Furthermore, by setting up multiple mounting plates 15 and heat sinks 28, the heat sink 28 can quickly transfer the heat generated by the electronic components to the multiple heat sinks 28 through the mounting plates 15, and then cooperate with the cooling fan 27 to effectively dissipate the heat inside the PLC electrical cabinet body 1, thereby improving the heat dissipation efficiency of the PLC electrical cabinet body 1, and indirectly improving the stability of the operation of various equipment on the automobile welding production line.

[0033] Working principle: When a fire occurs inside the PLC electrical cabinet body 1, the open flame sensor 18 and the smoke alarm 14 will sense the open flame or smoke in the PLC electrical cabinet body 1, and send signals to the air pump 21 and the two servo motors 7 and the motors inside the two installation boxes 12; The motors inside the two installation boxes 12 are automatically started by the signal, and the rotation direction thereof moves. The two motors drive the two first threaded rods 11 to rotate, and the two first threaded rods 11 drive the two first movable sleeves 9 and the two concave fixing plates 5 to move downward, and the two concave fixing plates 5 drive the baffle 6 to move downward, thereby blocking the rectangular groove 29, thereby making the interior of the PLC electrical cabinet body 1 in a closed space, preventing the fire from spreading outward, and also increasing the speed of the dry powder in extinguishing the fire; At the same time, the air pump 21 automatically starts upon receiving the signal, and the air pump 21 inputs the generated gas into the storage box 20 through the gas pipe 19. The gas drives the dry powder in the storage box 20 to be input into the moving pipe 16 through the multiple connecting pipes 13 and the telescopic hose 17, and is discharged through the multiple dust outlet pipes 26. The two servo motors 7 are started at the same time, and their rotation directions are consistent. The two servo motors 7 drive the two second threaded rods 25 to rotate, thereby driving the two second moving sleeves 23 and the two connecting blocks 24 to move downward, thereby driving the moving tube 16 to move downward, and the dry powder discharged from the multiple dust outlet pipes 26 is used to quickly extinguish the fire inside the PLC electrical cabinet body 1, thereby realizing automatic fire extinguishing. Among them, the external power supply for the electronic components on the heat dissipation device and the fire extinguishing device in this application is a battery, which is powered separately and does not share a line with the PLC electrical cabinet body 1. When a fire occurs and the power is cut off, the battery can also power the electronic components on the heat dissipation device and the fire extinguishing device.

[0034] Furthermore, by setting up multiple mounting plates 15 and heat sinks 28, the heat sinks 28 can quickly transfer the heat generated by the electronic components to the multiple heat sinks 28 through the mounting plates 15, and then cooperate with the cooling fan 27 to effectively dissipate the heat inside the PLC electrical cabinet body 1.

[0035] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A PLC electrical cabinet for automobile welding production line, characterized in that: include: PLC electrical cabinet body (1); A heat dissipation device, the heat dissipation device being arranged on the PLC electrical cabinet body (1); A fire extinguishing device, the fire extinguishing device is arranged on a PLC electrical cabinet body (1), the fire extinguishing device comprises a protection box (3), the protection box (3) is fixedly connected to the upper surface of the PLC electrical cabinet body (1), the front and rear inner walls of the protection box (3) are fixedly connected to connecting plates (22), and the opposite surfaces of the two connecting plates (22) are fixedly connected to a storage box (20); The storage box (20) is used for storing dry powder. Two feeding pipes (4) communicating with the storage box (20) are fixedly connected to the upper surface of the storage box (20). The upper ends of the two feeding pipes (4) penetrate the upper surface of the protection box (3). The two feeding pipes (4) are provided with protective covers. A movable tube (16) capable of moving up and down is arranged in the PLC electrical cabinet body (1), the movable tube (16) is connected to a storage box (20), the movable tube (16) is arranged horizontally and is used to discharge dry powder, and the front and rear surfaces of the PLC electrical cabinet body (1) are fixedly connected to a rectangular box (8); the rectangular box (8) is used to drive the movable tube (16) to move up and down; A smoke alarm (14) is fixedly mounted on the top of the PLC electrical cabinet body (1), and an open flame sensor (18) is fixedly mounted on the top of the PLC electrical cabinet body (1). When the open flame sensor (18) detects an open flame, the fire extinguishing device is controlled to automatically extinguish the fire.

2. A PLC electrical cabinet for an automobile welding production line according to claim 1, characterized in that: An air pump (21) is fixedly installed at the bottom of the protection box (3); an output end of the air pump (21) is fixedly connected to an air delivery pipe (19); and the air delivery pipe (19) is fixedly connected to the storage box (20); The gas delivery pipe (19) is in communication with the storage box (20), and a plurality of connecting pipes (13) in communication with the storage box (20) are fixedly connected to the lower surface of the storage box (20), and the plurality of connecting pipes (13) all penetrate into the interior of the PLC electrical cabinet body (1).

3. The PLC electrical cabinet for automobile welding production line according to claim 1 is characterized in that: A servo motor (7) is fixedly mounted on the upper ends of the two rectangular boxes (8), and the output ends of the servo motors (7) are respectively rotated to penetrate into the interior of the corresponding rectangular box (8), and the output ends of the two servo motors (7) are fixedly connected to a second threaded rod (25); The lower ends of the two second threaded rods (25) are rotatably connected to the bottoms of the corresponding rectangular boxes (8) respectively.

4. A PLC electrical cabinet for an automobile welding production line according to claim 3, characterized in that: The outer walls of the two second threaded rods (25) are both threadedly sleeved with second moving sleeves (23), the opposite surfaces of the two second moving sleeves (23) are both fixedly connected with connecting blocks (24), and the moving tube (16) is fixedly installed between the two connecting blocks (24); The upper surface of the movable tube (16) is fixedly connected to a plurality of telescopic hoses (17) communicating therewith, and the upper ends of the plurality of telescopic hoses (17) are respectively fixedly connected to corresponding connecting tubes (13).

5. A PLC electrical cabinet for an automobile welding production line according to claim 4, characterized in that: The plurality of telescopic hoses (17) are respectively in communication with corresponding connecting pipes (13), and the right side of the movable pipe (16) is fixedly connected with a plurality of dust outlet pipes (26) in communication therewith.

6. The PLC electrical cabinet for automobile welding production line according to claim 1 is characterized in that: The heat dissipation device comprises a dust cover (10), the dust cover (10) being fixedly mounted on the right side of the PLC electrical cabinet body (1), and the front and rear surfaces of the dust cover (10) being fixedly connected to a mounting box (12); The two installation boxes (12) are both fixedly installed with motors, the output ends of the two motors are both fixedly connected to first threaded rods (11), and the upper ends of the two first threaded rods (11) are respectively rotated to penetrate the upper surface of the corresponding installation box (12).

7. A PLC electrical cabinet for an automobile welding production line according to claim 6, characterized in that: The outer walls of the two first threaded rods (11) are both threadedly sleeved with first movable sleeves (9), and the opposite surfaces of the two first movable sleeves (9) are both fixedly connected with concave fixing plates (5); The two concave fixed plates (5) are fixedly connected to the opposite surfaces away from the first movable sleeve (9) with a baffle (6), and the lower end of the baffle (6) slides through the interior of the PLC electrical cabinet body (1).

8. The PLC electrical cabinet for automobile welding production line according to claim 1 is characterized in that: The heat dissipation device further comprises a plurality of heat sinks (28); a rectangular groove (29) communicating with the PLC electrical cabinet body (1) is provided on the right side thereof; the plurality of heat sinks (28) are fixedly mounted on the inner wall of the rectangular groove (29); and a heat dissipation fan (27) is fixedly mounted on the inner wall of the dust cover (10); The input end of the cooling fan (27) is connected to the PLC electrical cabinet body (1), and the cooling fan (27) is located on the right side of the baffle (6).

9. The PLC electrical cabinet for automobile welding production line according to claim 1 is characterized in that: A plurality of mounting plates (15) are fixedly connected to the front and rear inner walls of the PLC electrical cabinet body (1), and the plurality of mounting plates (15) are all used for mounting electronic components; The rear surfaces of the plurality of mounting plates (15) are all in contact with the plurality of heat sinks (28); a protective door (2) is provided on the left side of the PLC electrical cabinet body (1); an opening and closing button is provided on the protective door (2); a display screen (30) is provided on the protective door (2); a car welding robot arm control button (31) is provided on the protective door (2); and a car welding parts feeding device control button (32) is provided on the protective door (2).

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