Bending equipment for civil air defense door machining

Abstract

The utility model relates to the technical field of machinery, and discloses a bending device for civil air defense door processing, which comprises a base, the left side of the top of the base is fixedly connected with a workbench, the front side and the rear side of the top of the workbench are fixedly connected with a fixing frame, and the inner wall of the front side of the fixing frame is fixedly connected with a bending mechanism. The top of the workbench is fixedly connected with an anti-warping mechanism, the top of the base is fixedly connected with a discharging mechanism, the right side of the workbench is fixedly connected with a material guiding plate, the right side of the top of the base is fixedly connected with a collecting box, and the bending mechanism comprises a first motor. According to the civil air defense door, bending of the steel pipe is achieved, the two ends of the steel pipe are prevented from being tilted upwards easily when the steel pipe is bent, then parts can be tightly attached to the connecting points, connection firmness can be guaranteed no matter welding or other connecting modes are adopted, and therefore the stability of the overall structure of the civil air defense door is enhanced, and the service life of the civil air defense door is prolonged. And therefore, the sealing structure is more reliable when bearing impact and pressure.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical technical field especially relates to a kind of bending equipment for civil air defence door processing. BACKGROUND

[0002] Bending equipment is a kind of mechanical equipment for bending deformation of various sheet materials, pipe materials and other materials according to specific angle and shape, which is widely used in civil air defence door processing and many other industries. The embedded plate in the door frame of civil air defence door is an important part of the seal between the door leaf and the door frame of steel structure civil air defence door. The embedded plate needs to be bent by bending equipment during processing and production, and is usually welded to the surface of the inner panel of the door leaf after forming.

[0003] After searching, Chinese patent document publication number CN217831391U discloses a civil air defence door steel pipe shell bending processing equipment, which comprises a fixed side plate, a pressure applying motor is fixedly connected to one side of the fixed side plate, a threaded rotating rod is fixedly connected to the output shaft of the pressure applying motor through a shaft coupling, a threaded sleeve is threadedly connected to one end of the threaded rotating rod, an active rotating rod is movably connected to one side of the threaded sleeve, an active top block is movably connected to one end of the active rotating rod, a connecting clamping rod is fixedly connected to one side of the active top block, a limiting clamping rod is fixedly connected to one side of the active top block, and a positioning slide rail is fixedly connected to one side of the fixed side plate. The civil air defence door steel pipe shell bending processing equipment can achieve high work efficiency, reduce labor consumption, shorten processing operation time and reduce economic consumption, thereby improving the practicality of the civil air defence door steel pipe shell bending processing equipment.

[0004] The above-mentioned patent mentions the beneficial effect: "by setting the fixed side plate, pressure applying motor, threaded rotating rod, threaded sleeve, active rotating rod, active top block, connecting clamping rod, limiting clamping rod, positioning slide rail and buffer spring, the civil air defence door steel pipe shell bending processing equipment can achieve high work efficiency, solve the problem of low work efficiency of general civil air defence door steel pipe shell bending processing equipment, reduce labor consumption, shorten processing operation time and reduce economic consumption during use, thereby improving the practicality of the civil air defence door steel pipe shell bending processing equipment", although the above-mentioned patent can reduce the problem of low work efficiency, but in the prior art, part of the bending equipment is easy to cause the two ends to be upwardly tilted when bending the steel pipe, thereby reducing the bending precision. The size deviation caused by tilting and the weakening of the connecting point will affect the structural strength of the entire civil air defence door, reduce its carrying capacity when bearing impact, pressure and other external forces. Therefore, a bending equipment for civil air defence door processing is proposed to solve the above-mentioned problems. SUMMARY

[0005] In order to make up for the above shortcomings, the utility model provides a kind of bending equipment for civil air defence door processing, to improve the bending equipment in prior art when using, it is prone to cause the problem that two ends are prone to be upturned when bending steel pipe.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] A kind of bending equipment for civil air defence door processing, including base, the top left side of the base is fixedly connected with workbench, the top front and back of the workbench is fixedly connected with fixed frame, the front side inner wall of the fixed frame is fixedly connected with bending mechanism, the top of the workbench is fixedly connected with anti-upturn mechanism, the top of the base is fixedly connected with blanking mechanism, the right side of the workbench is fixedly connected with guide plate, the top right side of the base is fixedly connected with collection box;

[0008] The bending mechanism includes motor one, the front side of the motor one is fixedly connected in the workbench, the driving end of the motor one is fixedly connected with bidirectional screw rod, the outside front and back of the bidirectional screw rod are all screw-connected with sleeve block, the bottom of the sleeve block is rotatably connected with rotating rod, the bottom of two rotating rods is rotatably connected with bending head, the far side of two sleeve blocks is fixedly connected with connecting plate;

[0009] The anti-upturn mechanism includes two connecting frames, the bottom of two connecting frames is fixedly connected on the top front and back of the workbench, the inside of the connecting frame is slidably connected with sliding block, the outside of the sliding block is fixedly connected with limit plate, the bottom of the limit plate is fixedly connected with spring, the inner wall of the connecting frame is fixedly connected with positioning plate;

[0010] Further, base support equipment, guarantee stable operation of each component.Workbench carries material to be processed, fixed frame is stably installed for bending mechanism, helps its accurate bending.In the bending mechanism, motor one drives bidirectional screw rod, makes sleeve block slide, drives bending head to complete accurate bending, while sleeve block is linked anti-upturn mechanism through connecting plate.The connecting frame of anti-upturn mechanism provides track for sliding block, prevents material from upturning when bending by the aid of spring pressure, improves processing quality, blanking mechanism is powered by motor two, drives rotating disc, rotating shaft and rotating plate, accurately controls square slide, drives blanking to grab material, support plate and limit block cooperate to ensure that blanking is stable.Guide plate introduces material pushed out by blanking mechanism into collection box.Each part cooperates, efficiently completes bending, anti-upturn, blanking and collection process of civil air defence door processing.

[0011] As further description of the above technical scheme:

[0012] The blanking mechanism comprises two support plates, the front side of the rear support plate is fixedly connected with a motor two, the driving end of the motor two is fixedly connected with a rotating disc, the front side of the rotating disc is fixedly connected with a rotating shaft, the top of the base is rotationally connected with a rotating plate, the inside of the rotating plate is provided with an inner cavity, the proximal side of the two support plates is slidably connected with a sliding frame, the inside of the front and rear sides of the sliding frame is provided with a square opening, the inner wall of the two square openings is slidably connected with a square slide plate, and the top of the front and rear sides of the sliding frame is fixedly connected with a blanking grab.

[0013] Further, in the blanking mechanism, the support plates are fixed at the bottom of the workbench to provide support for the entire mechanism, the motor two on the rear support plate is the power source, the motor two drives the rotating disc, and then the rotating shaft and the rotating plate rotate, the rotating plate controls the movement of the square slide plate in the sliding frame through the inner cavity, the square slide plate drives the blanking grab on the top of the sliding frame to push the processed steel pipe off the workbench to complete the blanking, and the long slot of the support plate cooperates with the limiting block of the sliding frame to ensure the stability of the blanking process.

[0014] As a further description of the above technical solutions:

[0015] The rear side of the motor one is rotationally connected to the inner wall of the rear side of the fixed frame, and the top of the two sleeve blocks is slidably connected to the inside of the top end of the fixed frame.

[0016] Further, the rear side of the motor one is rotationally connected to the inner wall of the rear side of the fixed frame, which not only ensures the stability of the motor, but also enables it to flexibly drive the bidirectional threaded rod to rotate. The top of the sleeve block slides in the inside of the top end of the fixed frame to provide accurate guidance for the sleeve block, ensuring that the sleeve block slides stably under the drive of the bidirectional threaded rod, and then enabling the bending head to move accurately, ensuring the stability and accuracy of the bending operation, and assisting the civil defense door material to complete the bending processing according to requirements.

[0017] As a further description of the above technical solutions:

[0018] The outside of the sliding block is slidably connected to the inside of the positioning plate, and the bottom of the spring is fixedly connected to the top of the positioning plate.

[0019] Further, the positioning plate provides an accurate sliding track for the sliding block, ensuring that the sliding block moves stably and linearly when subjected to force. When the sliding block is pressed down by external force, the spring is compressed to store energy, and then releases the energy to provide continuous and stable pressing force for the sliding block, effectively preventing the material from being raised at both ends during bending, and ensuring the processing accuracy.

[0020] As a further description of the above technical solutions:

[0021] The bottom of the connecting plate is slidably connected to the top of the connecting frame, and the bottom of the connecting plate is in contact with the top of the sliding block;

[0022] Further, the connecting plate slides on the top of the connecting frame, smoothly transmits the movement from the bending mechanism, the bottom of the connecting plate is in contact with the top of the sliding block, and the sliding block is driven to slide downward during bending, triggering the anti-warping mechanism to work, timely pressing the material to be processed, preventing the material from being warped at both ends during bending, and ensuring the accuracy of the processing of the civil air defense door.

[0023] As a further description of the above technical solutions:

[0024] The inside of the supporting plate is provided with a long slot, the front and rear sides of the sliding frame are fixedly connected with limiting blocks, and the limiting blocks are slidably connected to the inner wall of the long slot;

[0025] Further, the long slot on the supporting plate is tightly matched with the limiting blocks on the two sides of the sliding frame, the limiting blocks slide in the long slot, accurately limit the moving direction of the sliding frame, ensure that the sliding frame can only smoothly slide along a specific track, avoid deviation when pushing the material to be processed, ensure that the blanking action is accurate, and make the whole blanking process stable and orderly.

[0026] As a further description of the above technical solutions:

[0027] The top of the two supporting plates is fixedly connected to the bottom of the workbench on the front and rear sides, and the top of the sliding frame is slidably connected to the bottom of the workbench.

[0028] Further, the two supporting plates are stably connected to the bottom of the workbench, providing firm support for the whole blanking mechanism, and ensuring that the blanking mechanism works cooperatively with the workbench.

[0029] As a further description of the above technical solutions:

[0030] The outer part of the rotating shaft is in contact with the inner wall of the inner cavity, and the far sides of the two blanking claws are slidably connected to the close sides of the two connecting frames.

[0031] Further, the rotating shaft is in contact with the inner wall of the inner cavity, ensuring that the rotating plate can accurately drive the components in the inner cavity to move when the rotating plate rotates, and providing stable power transmission for the blanking action.

[0032] The utility model has the advantages of the following beneficial effects:

[0033] 1. In this utility model, the starting motor slides a sliding block, which drives the limiting plate to move. The limiting plate then compresses the spring. After the sliding block contacts the steel pipe, it achieves bending of the steel pipe and prevents the two ends of the steel pipe from easily curling upwards when bending. This allows the components to fit tightly at the connection point. Whether welding or other connection methods are used, the connection can be guaranteed to be firm, thereby enhancing the stability of the overall structure of the air defense door and making it more reliable when subjected to impact and pressure.

[0034] 2. In this utility model, starting motor two drives the rotating disk to rotate, which in turn drives the rotating shaft to move. The rotating shaft then drives the rotating plate to rotate, which in turn drives the square sliding plate to move. The square sliding plate then drives the unloading grab, thus unloading the steel pipe. This facilitates workers' handling, loading, unloading, and processing operations, reduces the physical exertion of workers during handling, lowers labor intensity, and improves work safety. Attached Figure Description

[0035] Figure 1 This is a three-dimensional schematic diagram of a bending device for processing air-raid shelter doors proposed in this utility model;

[0036] Figure 2 This is a schematic diagram of the connecting plate structure of a bending device for processing air-raid shelter doors proposed in this utility model;

[0037] Figure 3 This is a schematic diagram of the structure of a sleeve bending device for processing air defense doors proposed in this utility model;

[0038] Figure 4 This is a schematic diagram of the material feeding mechanism of a bending device for processing air defense doors proposed in this utility model.

[0039] Legend:

[0040] 1. Base; 2. Workbench; 3. Fixing frame; 4. Bending mechanism; 401. Motor 1; 402. Bidirectional threaded rod; 403. Sleeve block; 404. Rotating rod; 405. Bending head; 406. Connecting plate; 5. Anti-warping mechanism; 501. Connecting frame; 502. Sliding block; 503. Limiting plate; 504. Spring; 505. Positioning plate; 6. Unloading mechanism; 601. Support plate; 602. Motor 2; 603. Rotating disk; 604. Rotating shaft; 605. Rotating plate; 606. Inner cavity; 607. Sliding frame; 608. Square opening; 609. Square sliding plate; 610. Unloading gripper; 7. Guide plate; 8. Collection box. Detailed Implementation

[0041] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0042] With reference to Figure 1 The utility model provides an embodiment: a kind of bending equipment for air defence door processing, including base 1, the top left side of base 1 is fixedly connected with workbench 2, the top front and back sides of workbench 2 are fixedly connected with fixed frame 3, the front side inner wall of fixed frame 3 is fixedly connected with bending mechanism 4, the top of workbench 2 is fixedly connected with prevent warping mechanism 5, the top of base 1 is fixedly connected with blanking mechanism 6, the right side of workbench 2 is fixedly connected with guide plate 7, the top right side of base 1 is fixedly connected with collection box 8;

[0043] Specifically, base 1 provides stable support for the whole equipment, workbench 2 is used to place material to be processed, and the front and back fixed frames 3 are installed with bending mechanism 4 and ensure the stable movement of sleeve block 403, and bending mechanism 4 realizes material bending;Prevent warping mechanism 5 prevents the two ends of the material from warping when bending;Blanking mechanism 6 completes the blanking operation of the material after processing;Guide plate 7 guides the material after blanking to slide to collection box 8, and collection box 8 is used to store the processed parts, and the structures work cooperatively to realize the efficient work of the bending equipment for air defence door processing.

[0044] With reference to Figure 2 And Figure 3 Bending mechanism 4 includes motor one 401, the front side of motor one 401 is fixedly connected to workbench 2, the driving end of motor one 401 is fixedly connected with bidirectional screw rod 402, the outer front and back sides of bidirectional screw rod 402 are both screw-connected with sleeve block 403, the bottom of sleeve block 403 is rotatably connected with rotating rod 404, the bottom of two rotating rods 404 is rotatably connected with bending head 405, bending head 405 is driven to rotate by motor one 401, the sleeve block 403 screw-connected on the outer front and back sides thereof will slide along the axial direction due to the rotation of screw rod, so as to realize the adjustment of the position of bending head 405, the far side of two sleeve blocks 403 is fixedly connected with connecting plate 406, the rear side of motor one 401 is rotatably connected to the rear side inner wall of fixed frame 3, the top of two sleeve blocks 403 is slidably connected to the top end inner part of fixed frame 3 and slides under the driving of bidirectional screw rod 402, the rotating rod 404 rotatably connected at the bottom will change the angle along with the movement of sleeve block 403, and then drive bending head 405 to move to different positions for bending operation. Meanwhile, sleeve block 403 is also associated with prevent warping mechanism 5 through connecting plate 406;

[0045] With reference to Figure 3Specifically, the motor 401 is fixed on the front side of the workbench 2 as the power core of the bending mechanism 4, and the driving end drives the bidirectional threaded rod 402 to rotate, so that the sleeve blocks 403 connected with the threaded rod 402 slide along the axial direction, the top of the sleeve blocks 403 slide inside the top of the fixed frame 3 to ensure stability, the rotating rods 404 connected with the bottom of the sleeve blocks 403 move with the sleeve blocks 403 to change the angle, and then drive the bending head 405 to move to different positions to bend the material, and the sleeve blocks 403 are connected with the anti-warping mechanism 5 through the connecting plates 406 fixed on the opposite sides to ensure the accuracy and efficiency of the whole bending process.

[0046] Referring to Figure 3 The anti-warping mechanism 5 includes two connecting frames 501 fixedly connected on the top of the workbench 2 on the front and rear sides, and the sliding blocks 502 are slidably connected inside the connecting frames 501, and the sliding blocks 502 slide inside the connecting frames 501, and are driven to slide when the connecting plates 406 move by contacting the bottom of the connecting plates 406. When the sliding blocks 502 contact the steel pipe to be processed, the downward pressure can be applied to the steel pipe to prevent the two ends of the steel pipe from being warped upward during bending. The limiting plates 503 are fixedly connected outside the sliding blocks 502, and the springs 504 are fixedly connected on the bottom of the limiting plates 503 and between the limiting plates 503 and the positioning plates 505 on the inner wall of the connecting frames 501. When the sliding blocks 502 move downward, the springs 504 are compressed to store elastic potential energy. During the bending of the steel pipe, the springs 504 release the elastic potential energy to continuously provide the downward pressure for the sliding blocks 502 to ensure the anti-warping effect. The positioning plates 505 are fixedly connected on the inner wall of the connecting frames 501, and the sliding blocks 502 are slidably connected inside the positioning plates 505. The bottom of the springs 504 is fixedly connected on the top of the positioning plates 505. The bottom of the connecting plates 406 is slidably connected on the top of the connecting frames 501, and the bottom of the connecting plates 406 contacts the top of the sliding blocks 502.

[0047] Referring to Figure 4 Specifically, in the anti-warping mechanism 5, the two connecting frames 501 are fixed on the top of the workbench 2 on the front and rear sides to form a basic frame. The sliding blocks 502 inside the connecting frames 501 are driven to slide downward when the connecting plates 406 move with the sleeve blocks 403 of the bending mechanism 4 by contacting the bottom of the connecting plates 406. When the sliding blocks 502 contact the steel pipe to be processed, the downward pressure is applied. The limiting plates 503 fixed outside the sliding blocks 502 are connected with the springs 504 on the bottom, and the other end of the springs 504 is fixed on the positioning plates 505 on the inner wall of the connecting frames 501. With the downward pressure of the sliding blocks 502, the springs 504 are compressed to store energy. During the whole bending of the steel pipe, the springs 504 continuously release the elastic potential energy to provide the stable downward pressure for the sliding blocks 502 to ensure that the two ends of the steel pipe are not warped upward during bending, and to ensure the accuracy and quality of the material processing of the security door.

[0048] Referring to Figure 4 The blanking mechanism 6 comprises two support plates 601, a motor two 602 is fixedly connected to the front side of the rear support plate 601, a rotating disc 603 is fixedly connected to the driving end of the motor two 602, a rotating shaft 604 is fixedly connected to the front side of the rotating disc 603, a rotating plate 605 is rotatably connected to the top of the base 1, the rotating disc 603 is driven to rotate by the motor two 602, the front-fixed rotating shaft 604 rotates along with the rotating disc 603 to drive the rotating plate 605 to rotate, an inner cavity 606 is formed in the interior of the rotating plate 605, a sliding frame 607 is slidably connected to the side close to the two support plates 601, square openings 608 are formed in the interior of the front and rear sides of the sliding frame 607, square sliding plates 609 are slidably connected to the inner walls of the two square openings 608, the inner cavity 606 formed in the interior of the rotating plate 605 is used for the movement of the square sliding plates 609, the rotating plate 605 is driven to rotate by the rotating shaft 604, the movement direction and position of the square sliding plates 609 are controlled, blanking claws 610 are fixedly connected to the top of the front and rear sides of the sliding frame 607, the blanking claws 610 are driven to move by the square sliding plates 609, directly act on the steel pipe, push the finished steel pipe off the workbench, complete the blanking process, a long slot is formed in the interior of the support plate 601, limiting blocks are fixedly connected to the front and rear sides of the sliding frame 607, the limiting blocks are slidably connected to the inner walls of the long slot, the top of the two support plates 601 is fixedly connected to the bottom of the workbench 2, the top of the sliding frame 607 is slidably connected to the bottom of the workbench 2.

[0049] Specifically, in the blanking mechanism 6, the top of the two support plates 601 is fixed to the bottom of the workbench 2, the front side of the rear support plate 601 is fixedly connected to the motor two 602 as a power source, the driving end of the motor two 602 drives the rotating disc 603 to rotate, the rotating shaft 604 on the front side of the rotating disc 603 rotates along with the rotating disc 603 to drive the rotating plate 605 rotatably connected to the top of the base 1 to rotate. The inner cavity 606 in the interior of the rotating plate 605 is used for the movement of the square sliding plates 609, the movement direction and position of the square sliding plates 609 are controlled by rotating. The square sliding plates 609 slide in the square openings 608 in the interior of the front and rear sides of the sliding frame 607, the blanking claws 610 on the top of the sliding frame 607 are driven to move by the square sliding plates 609, directly push the finished steel pipe off the workbench, complete the blanking. At the same time, the long slot in the interior of the support plate 601 cooperates with the limiting blocks fixedly connected to the front and rear sides of the sliding frame 607 to limit the sliding direction of the sliding frame 607, ensure the stability and accuracy of the blanking process.

[0050] Working principle: when the need to bend, first start the motor 401, realized that the motor 401 driven by the two-way threaded rod 402 rotation, reached the two-way threaded rod 402 driven by the sleeve block 403 sliding, through the sleeve block 403 driven by the rotating rod 404 rotation, reached the rotating rod 404 driven by the elbow 405 to move, through the sleeve block 403 driven by the connecting plate 406 movement, elbow 405 to the designated location, through the connecting plate 406 driven by the sliding block 502 sliding, realized the sliding block 502 driven by the limit plate 503 movement, reached the limit plate 503 driven by the spring 504 compression, through the sliding block 502 and steel pipe contact, realized the bending of the steel pipe and prevent the steel pipe bending when two ends are easy to rise, in turn can make the components in the connection point closely, whether it is welded or using other connection mode, can guarantee the firmness of the connection, thereby enhancing the stability of the overall structure of the civil air defense door, make it more reliable when bearing impact and pressure.

[0051] By starting the motor 602, realized that the motor 602 driven by the rotating disc 603 rotation, reached the rotating disc 603 driven by the rotating shaft 604 movement, through the rotating shaft 604 driven by the rotating plate 605 rotation, realized the rotating plate 605 driven by the square slide 609 movement, reach the square slide 609 driven by the unloading grab 610, unloading grab 610 push steel pipe movement, realized the unloading of the steel pipe, in turn facilitate the worker to carry, loading and unloading and processing operation, reduce the physical exertion of workers in the process of carrying, reduce labor intensity, improve the safety of work.

[0052] Finally, it should be noted that: the above described only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application, for the person skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of protection of the present application.

Claims

1. A bending device for processing air-raid shelter doors, comprising a base (1), characterized in that: A workbench (2) is fixedly connected to the top left side of the base (1). A fixed frame (3) is fixedly connected to the front and rear sides of the top of the workbench (2). A bending mechanism (4) is fixedly connected to the inner front wall of the fixed frame (3). An anti-tilting mechanism (5) is fixedly connected to the top of the workbench (2). A feeding mechanism (6) is fixedly connected to the top of the base (1). A guide plate (7) is fixedly connected to the right side of the workbench (2). A collection box (8) is fixedly connected to the top right side of the base (1). The bending mechanism (4) includes a motor (401), the front side of which is fixedly connected to the workbench (2). The driving end of the motor (401) is fixedly connected to a bidirectional threaded rod (402). Both the front and rear sides of the bidirectional threaded rod (402) are threadedly connected to sleeve blocks (403). The bottom of the sleeve block (403) is rotatably connected to a rotating rod (404). The bottom of the two rotating rods (404) is rotatably connected to a bending head (405). The opposite sides of the two sleeve blocks (403) are fixedly connected to a connecting plate (406). The anti-tilting mechanism (5) includes two connecting frames (501). The bottoms of the two connecting frames (501) are fixedly connected to the front and rear sides of the top of the workbench (2). A sliding block (502) is slidably connected inside the connecting frame (501). A limiting plate (503) is fixedly connected to the outside of the sliding block (502). A spring (504) is fixedly connected to the bottom of the limiting plate (503). A positioning plate (505) is fixedly connected to the inner wall of the connecting frame (501).

2. The bending equipment for processing air-raid shelter doors according to claim 1, characterized in that: The feeding mechanism (6) includes two support plates (601). A motor (602) is fixedly connected to the front side of the rear support plate (601). A rotating disk (603) is fixedly connected to the drive end of the motor (602). A rotating shaft (604) is fixedly connected to the front side of the rotating disk (603). A rotating plate (605) is rotatably connected to the top of the base (1). An inner cavity (606) is opened inside the rotating plate (605). A sliding frame (607) is slidably connected to the adjacent side of the two support plates (601). A square opening (608) is opened on both the front and rear sides of the sliding frame (607). A square sliding plate (609) is slidably connected to the inner wall of the two square openings (608). A feeding grab (610) is fixedly connected to the front and rear sides of the top of the sliding frame (607).

3. The bending equipment for processing air-raid shelter doors according to claim 1, characterized in that: The rear side of the motor (401) is rotatably connected to the rear inner wall of the fixed frame (3), and the tops of the two sleeves (403) are slidably connected to the top of the fixed frame (3).

4. The bending equipment for processing air-raid shelter doors according to claim 1, characterized in that: The outer side of the sliding block (502) is slidably connected to the inside of the positioning plate (505), and the bottom of the spring (504) is fixedly connected to the top of the positioning plate (505).

5. A bending device for processing air-raid shelter doors according to claim 1, characterized in that: The bottom of the connecting plate (406) is slidably connected to the top of the connecting frame (501), and the bottom of the connecting plate (406) is in contact with the top of the sliding block (502).

6. A bending device for processing air-raid shelter doors according to claim 2, characterized in that: The support plate (601) has an elongated opening inside, and the sliding frame (607) has a limit block fixedly connected to both the front and rear sides. The limit block is slidably connected to the inner wall of the elongated opening.

7. A bending device for processing air-raid shelter doors according to claim 2, characterized in that: The tops of the two support plates (601) are fixedly connected to the front and rear sides of the bottom of the workbench (2), and the top of the sliding frame (607) is slidably connected to the bottom of the workbench (2).

8. A bending device for processing air-raid shelter doors according to claim 2, characterized in that: The outside of the rotating shaft (604) is in contact with the inner wall of the inner cavity (606), and the two far sides of the feeding grips (610) are slidably connected to the near sides of the two connecting frames (501).

Images