Bending device for blasting protection pipe

Abstract

The utility model discloses a kind of blasting protection pipe fittings bending processing device, it is related to metal pipe fittings bending processing equipment technical field.The device includes bottom plate, frame support assembly, compaction driving mechanism, lifting driving mechanism, pipe fittings limiting mechanism, lateral bending mechanism, elastic support mechanism and end concave forming mechanism;One end of U-shaped protection pipe is arranged in pipe fittings limiting mechanism and extends to the place of end concave forming mechanism, and the other end is inserted in lateral bending mechanism, and compaction driving mechanism is located above U-shaped protection pipe.The utility model realizes accurate positioning, smooth thrust and elastic buffer in the bending process of pipe fittings by the cooperation of each mechanism, effectively solve the problem that pipe fittings is easy to deviate when bending, end concave irregular and workpiece is easy to damage, with the advantages of high bending precision, stable processing quality, strong adaptability.

Description

Technical Field

[0001] This utility model relates to the technical field of metal pipe processing equipment, specifically a device for bending and processing blast protection pipe fittings. Background Technology

[0002] In the manufacturing process of blast protection systems, pipe fittings require specific bending processes to meet structural design requirements. Existing bending equipment has the following main problems when handling such pipe fittings: First, inaccurate positioning leads to pipe fittings easily shifting or slipping during bending, resulting in bending angle deviations; second, irregular end-face concave forming lacks an effective reverse support structure, causing uneven stress on the pipe openings and resulting in wrinkles or deformation; third, uneven lateral bending thrust easily leads to pipe fitting jamming or trajectory deviation; fourth, the pressing mechanism is mostly rigid contact, lacking a buffer structure, easily causing hard damage to the pipe fitting surface; and fifth, the equipment lacks height adjustment capability, making it difficult to adapt to the processing needs of pipe fittings of different specifications. Utility Model Content

[0003] The purpose of this utility model is to provide a bending processing device for blast protection pipe fittings, which has the advantages of accurate positioning, regular end concave forming, stable bending thrust, elastic buffer protection and good adaptability, and solves the problems in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A device for bending and processing blast protection pipe fittings includes a U-shaped protective pipe to be processed, a base plate, a frame support assembly fixed to the upper surface of the base plate, a pressing drive mechanism disposed on the side of the frame support assembly, a lifting drive mechanism fixed to the top of the frame support assembly, a pipe fitting limiting mechanism fixed to the side of the frame support assembly, a lateral bending mechanism disposed at the moving end of the lifting drive mechanism, an elastic support mechanism disposed at the upper end of the lateral bending mechanism, and an end concave forming mechanism fixed to the upper surface of the base plate; one end of the U-shaped protective pipe to be processed passes through the pipe fitting limiting mechanism and extends to the end concave forming mechanism, the other end of the U-shaped protective pipe is inserted into the lateral bending mechanism, and the pressing drive mechanism is located directly above the U-shaped protective pipe.

[0005] Preferably, the frame support assembly includes a first support block fixed to one side of the upper surface of the base plate, a second support block fixed to the other side of the upper surface of the base plate, a connecting plate fixed to the top of both the first and second support blocks, a fixing column fixed to the upper part between the first and second support blocks, and a first connecting block fixed to the lower part between the first and second support blocks; the axial direction of the fixing column is parallel to the upper surface of the base plate, and the length direction of the first connecting block is parallel to the axial direction of the fixing column.

[0006] It is worth noting that the bottom support frame is formed by the first support block and the second support block, and together with the connecting plate, a stable gantry structure is formed. The horizontally set fixed column provides a smooth slide rail foundation for the lateral movement of the pressing drive mechanism. The vertically distributed structural layout ensures the overall force balance and operational stability of the device.

[0007] Preferably, the pressing drive mechanism includes a vertical plate fixed to the outer wall of the second support block, a first electric cylinder fixed to the outer wall of the vertical plate, a sliding sleeve sleeved on the outer peripheral wall of the fixed column, a moving block fixed to the outer peripheral wall of the sliding sleeve, a first fixed plate fixed to the side wall of the moving block, and a first cylinder fixed to the side wall of the first fixed plate; the lower end face of the moving block is in contact with the upper end face of the first connecting block, the output shaft end of the first electric cylinder is fixed to the side wall of the moving block, and the output shaft of the first cylinder is vertically downward.

[0008] It is worth noting that by driving the moving block to move laterally along the fixed column through the first electric cylinder, the first cylinder and the pressing component can be moved as a whole, so that the pressing drive mechanism can accurately align the pipes at different positions; the cylinder output shaft is set vertically downward to ensure that the downward pressure is applied vertically along the direction of force when the pipe is bent, and to avoid the generation of horizontal component force that causes the pipe to slip.

[0009] Preferably, the lifting drive mechanism includes a second electric cylinder fixed to the side wall of the connecting plate, a first fixed block fixed to the lower end of the output shaft of the second electric cylinder, a lifting plate fixed to the lower end face of the first fixed block, two guide rods fixed to the upper end face of the base plate, and two guide cylinders respectively sleeved on the outer peripheral walls of the corresponding guide rods; the two guide rods are symmetrically arranged on both sides below the lifting plate, the outer peripheral walls of the two guide cylinders are fixed to the lifting plate, and the inner walls of the guide cylinders slide against the outer peripheral walls of the guide rods.

[0010] It is worth noting that the second electric cylinder drives the lifting plate to adjust its height through the first fixed block. In conjunction with the sliding guide structure of the guide rod and the guide cylinder, it can effectively bear the thrust and torque generated when the lateral bending mechanism is working, while ensuring the accuracy of the vertical translation of the lifting plate, thus ensuring the smooth operation of the lifting plate.

[0011] Preferably, the pipe fitting limiting mechanism includes a second fixing plate fixed to the side wall of the connecting plate, a second connecting block fixed to the outer side wall of the second fixing plate, a limiting cylinder fixed to the side wall of the second connecting block, and a first limiting post fixed to the outer side wall of the second fixing plate; a first through hole is provided through the lifting plate, the inner cavity of the limiting cylinder is vertically aligned with the first through hole, the first limiting post is located on the outer side of the limiting cylinder, and the axial direction of the first limiting post is perpendicular to the axial direction of the limiting cylinder.

[0012] It is worth noting that the limiting cylinder and the first through hole on the lifting plate are set vertically opposite each other. Together with the first limiting post, they form a multi-directional limiting constraint when the U-shaped protective tube passes through: the limiting cylinder provides axial guidance, the first limiting post provides lateral blocking, and the alignment of the inner cavity and the through hole effectively limits the rotation and displacement of the pipe during the stress process, providing a precise positioning reference for subsequent precise bending.

[0013] Preferably, the lateral bending mechanism includes a second fixed block fixed to the upper surface of the lifting plate, a second through hole opened through the side wall of the second fixed block, a slide rod slidably disposed on the inner wall of the second through hole, a bending cylinder fixed to one end of the slide rod near the U-shaped protective tube, a crossbar fixed to the outer peripheral wall of the bending cylinder, a third fixed block fixed to one end of the crossbar away from the bending cylinder, a fixed cylinder fixed to the outer wall of the second fixed block, and a second cylinder fixed to the inner wall of the fixed cylinder; the output shaft end of the second cylinder is fixedly connected to the third fixed block, and the axial direction of the slide rod is perpendicular to the axial direction of the bending cylinder.

[0014] It is worth noting that the second cylinder drives the bending cylinder through the third fixed block and the crossbar, and the slide bar slides smoothly in the second through hole, ensuring the linear thrust of the bending cylinder in the horizontal direction and avoiding the deviation of the pipe bending trajectory caused by uneven thrust. The layout of the slide bar and the bending cylinder being perpendicular to the axis effectively converts the linear thrust output by the cylinder into the radial displacement required for pipe bending, making the bending action smooth and controllable.

[0015] Preferably, the elastic support mechanism includes a spring fixed to the upper end face of the second fixed block and a fixing head fixed to the upper end of the spring; the upper end face of the fixing head is directly opposite the lower end face of the U-shaped protective tube, and the axial direction of the spring is perpendicular to the upper end face of the base plate.

[0016] It is worth noting that when the clamping drive mechanism presses down on the pipe fitting, the lower end face of the pipe fitting contacts the fixed head, the spring is compressed and generates a reverse elastic force. This elastic force can not only absorb the rigid impact at the moment of clamping and protect the surface of the pipe fitting, but also assist the pipe fitting in resetting after the pressing and bending are completed, preventing the pipe fitting from getting stuck due to inertia.

[0017] Preferably, the end-pressing forming mechanism includes a second limiting post fixed to the upper surface of the base plate, a bearing plate fixed to the lower part of the outer peripheral wall of the second limiting post, a mounting ring movably placed on the upper surface of the bearing plate, and a plurality of second pressing blocks fixed to the upper surface of the mounting ring; the inner wall of the mounting ring is in contact with the outer peripheral wall of the second limiting post, and the plurality of second pressing blocks are evenly arranged along the circumference of the mounting ring.

[0018] It is worth noting that the second limiting post guides and supports the inner wall of the pipe fitting, and the bearing plate and the mounting ring cooperate to form a detachable crimping module. The inner wall of the mounting ring fits against the outer peripheral wall of the second limiting post to ensure circumferential positioning accuracy. Multiple second pressure blocks arranged evenly in the circumferential direction can evenly distribute the downward pressure of the pressing drive mechanism to the end face of the pipe fitting, realize reverse crimping and forming, and avoid pipe end deformation caused by excessive local stress.

[0019] Preferably, a first pressure block is fixedly connected to the lower end of the output shaft of the first cylinder, and a limit plate is fixedly connected to both ends of the first pressure block; the side walls of the two limit plates that are close to each other are in contact with the outer peripheral wall of the U-shaped protective tube, and the lower end face of the first pressure block and the upper end face of the U-shaped protective tube are directly opposite each other.

[0020] It is worth noting that the limiting plate fits against the outer circumferential wall of the pipe fitting, further clamping and limiting the pipe fitting. Together with the second limiting post and the first limiting post of the end concave forming mechanism, the two ends and the middle of the pipe fitting are completely constrained before bending, ensuring that the pipe fitting always maintains a precise spatial posture under the combined stress conditions of lateral bending and end concave forming.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model achieves precise multi-point positioning of the pipe fitting by setting up a pipe fitting limiting mechanism, a lateral bending mechanism and an end concave forming mechanism in synergy, effectively preventing slippage and offset during the bending process and improving bending accuracy; 2. This utility model ensures that the pipe end is regularly and flatly dented by setting a second limiting post and a second pressure block evenly arranged around the circumference on the base plate, and by using the inner wall of the pipe end to fit and position it and the outer pressure block to press it down evenly. 3. This utility model provides a sliding fit structure between the slide rod and the second through hole on the lifting plate, and the second cylinder provides a stable linear thrust, which avoids jamming and trajectory deviation caused by uneven thrust during bending. 4. This utility model provides an elastic support mechanism above the lateral bending mechanism, which uses the elastic compression of the spring to absorb the downward impact, effectively preventing hard damage to the surface of the pipe and assisting in the pipe's reset. 5. By setting up a lifting drive mechanism, the position of the bending mechanism can be flexibly adjusted according to the height requirements of pipe fittings of different specifications, which significantly improves the adaptability and versatility of the device. Attached Figure Description

[0022] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model; Figure 2 The diagram shown is a three-dimensional structural schematic of the frame support assembly and lifting drive mechanism of this utility model. Figure 3The diagram shown is a three-dimensional structural schematic of the lateral bending mechanism and the elastic support mechanism of this utility model. Figure 4 The diagram shown is a three-dimensional structural schematic of the pipe fitting limiting mechanism of this utility model. Figure 5 The diagram shown is a three-dimensional structural schematic of the end-concave forming mechanism of this utility model. Figure 6 The diagram shown is a three-dimensional structural schematic of the clamping drive mechanism of this utility model. Figure 7 The diagram shown illustrates the bending process of this utility model.

[0023] Reference numerals: 1. Base plate; 2. First support block; 3. Second support block; 4. Connecting plate; 5. Fixed column; 6. First connecting block; 7. Vertical plate; 8. First electric cylinder; 9. Sliding sleeve; 10. Moving block; 11. First fixed plate; 12. First cylinder; 13. Second electric cylinder; 14. First fixed block; 15. Lifting plate; 1501. Guide rod; 1502. Guide cylinder; 16. Second fixed plate; 17. Second connecting block; 8. Limiting cylinder; 19. First limiting post; 20. First through hole; 21. Second fixing block; 22. Second through hole; 23. Sliding rod; 24. Bending cylinder; 25. Crossbar; 26. Third fixing block; 27. Fixing cylinder; 28. Second cylinder; 29. ​​First pressure block; 30. Limiting plate; 31. Spring; 32. Fixing head; 33. Second limiting post; 34. Bearing plate; 35. Mounting ring; 36. Second pressure block; 37. U-shaped protective tube. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] To address the problems of easy misalignment during pipe bending, irregular end indentation, uneven thrust, and poor adaptability in existing technologies, the following technical solution is proposed. Please refer to [link / reference]. Figures 1 to 7 .

[0026] A device for bending and processing blast protection pipe fittings includes a U-shaped protective pipe 37 to be processed, a base plate 1, a frame support assembly fixed to the upper end face of the base plate 1, a pressing drive mechanism disposed on the side of the frame support assembly, a lifting drive mechanism fixed to the top of the frame support assembly, a pipe fitting limiting mechanism fixed to the side of the frame support assembly, a lateral bending mechanism disposed at the moving end of the lifting drive mechanism, an elastic support mechanism disposed at the upper end of the lateral bending mechanism, and an end concave forming mechanism fixed to the upper end face of the base plate 1.

[0027] In this embodiment, specifically, the frame support assembly includes a first support block 2 fixed to one side of the upper surface of the base plate 1, a second support block 3 fixed to the other side of the upper surface of the base plate 1, a connecting plate 4 fixed to the top of both the first support block 2 and the second support block 3, a fixing post 5 fixed to the upper part between the first support block 2 and the second support block 3, and a first connecting block 6 fixed to the lower part between the first support block 2 and the second support block 3. The axial direction of the fixing post 5 is parallel to the upper surface of the base plate 1, and the length direction of the first connecting block 6 is parallel to the axial direction of the fixing post 5.

[0028] In this embodiment, specifically, the pressing drive mechanism includes a vertical plate 7 fixed to the outer wall of the second support block 3, a first electric cylinder 8 fixed to the outer wall of the vertical plate 7, a sliding sleeve 9 sleeved on the outer peripheral wall of the fixed column 5, a moving block 10 fixed to the outer peripheral wall of the sliding sleeve 9, a first fixed plate 11 fixed to the side wall of the moving block 10, and a first cylinder 12 fixed to the side wall of the first fixed plate 11. The lower end face of the moving block 10 is in contact with the upper end face of the first connecting block 6, the output shaft end of the first electric cylinder 8 is fixed to the side wall of the moving block 10, and the output shaft of the first cylinder 12 is vertically downward.

[0029] In this embodiment, specifically, the lifting drive mechanism includes a second electric cylinder 13 fixed to the side wall of the connecting plate 4, a first fixing block 14 fixed to the lower end of the output shaft of the second electric cylinder 13, a lifting plate 15 fixed to the lower end face of the first fixing block 14, two guide rods 1501 fixed to the upper end face of the base plate 1, and two guide cylinders 1502 respectively sleeved on the outer peripheral walls of the corresponding guide rods 1501. The two guide rods 1501 are symmetrically arranged on both sides below the lifting plate 15, and the outer peripheral walls of the two guide cylinders 1502 are fixed to the lifting plate 15. The inner walls of the guide cylinders 1502 are slidably attached to the outer peripheral walls of the guide rods 1501.

[0030] In this embodiment, specifically, the pipe fitting limiting mechanism includes a second fixing plate 16 fixed to the side wall of the connecting plate 4, a second connecting block 17 fixed to the outer side wall of the second fixing plate 16, a limiting cylinder 18 fixed to the side wall of the second connecting block 17, and a first limiting post 19 fixed to the outer side wall of the second fixing plate 16. A first through hole 20 is provided through the lifting plate 15. The inner cavity of the limiting cylinder 18 is vertically aligned with the first through hole 20. The first limiting post 19 is located outside the limiting cylinder 18, and the axial direction of the first limiting post 19 is perpendicular to the axial direction of the limiting cylinder 18.

[0031] In this embodiment, specifically, the lateral bending mechanism includes a second fixing block 21 fixed to the upper end face of the lifting plate 15, a second through hole 22 penetrating through the side wall of the second fixing block 21, a slide rod 23 slidably disposed on the inner wall of the second through hole 22, a bending cylinder 24 fixed to one end of the slide rod 23 near the U-shaped protective tube 37, a crossbar 25 fixed to the outer peripheral wall of the bending cylinder 24, a third fixing block 26 fixed to one end of the crossbar 25 away from the bending cylinder 24, a fixing cylinder 27 fixed to the outer wall of the second fixing block 21, and a second cylinder 28 fixed to the inner wall of the fixing cylinder 27. The output shaft end of the second cylinder 28 is fixedly connected to the third fixing block 26, and the axial direction of the slide rod 23 is perpendicular to the axial direction of the bending cylinder 24.

[0032] In this embodiment, specifically, the elastic support mechanism includes a spring 31 fixed to the upper end face of the second fixed block 21 and a fixing head 32 fixed to the upper end of the spring 31. The upper end face of the fixing head 32 is directly opposite to the lower end face of the U-shaped protective tube 37, and the axial direction of the spring 31 is perpendicular to the upper end face of the base plate 1.

[0033] In this embodiment, specifically, the end-pressing forming mechanism includes a second limiting post 33 fixed to the upper end face of the base plate 1, a bearing plate 34 fixed to the lower part of the outer peripheral wall of the second limiting post 33, a mounting ring 35 movably placed on the upper end face of the bearing plate 34, and a plurality of second pressing blocks 36 fixed to the upper end face of the mounting ring 35. The inner wall of the mounting ring 35 is in contact with the outer peripheral wall of the second limiting post 33, and the plurality of second pressing blocks 36 are evenly arranged along the circumference of the mounting ring 35.

[0034] In this embodiment, specifically, a first pressure block 29 is fixedly connected to the lower end of the output shaft of the first cylinder 12, and a limit plate 30 is fixedly connected to both ends of the first pressure block 29. The side walls of the two limit plates 30 that are close to each other are in contact with the outer peripheral wall of the U-shaped protective tube 37, and the lower end face of the first pressure block 29 and the upper end face of the U-shaped protective tube 37 are directly opposite each other.

[0035] Working principle: During operation, one end of the U-shaped protective tube 37 is inserted into the inner wall of the limiting cylinder 18 and passes through the first through hole 20 on the lifting plate 15, so that the inner wall of the tube end is fitted onto the outer peripheral wall of the second limiting post 33, and the lower end face of the U-shaped protective tube 37 abuts against the upper end face of the second pressure block 36; the other end of the U-shaped protective tube 37 is inserted into the inner wall of the bending cylinder 24. Start the first cylinder 12, drive the first pressure block 29 and the limiting plate 30 to press down on the upper end face of the U-shaped protective tube 37, and at the same time the lower end face of the tube contacts the fixing head 32, so that the spring 31 is in a compressed state to provide elastic buffer. Then, the second cylinder 28 is activated, driving the third fixing block 26 to move the bending cylinder 24 horizontally along the axis of the slide rod 23 via the crossbar 25, simultaneously driving the U-shaped protective tube 37 inserted in the bending cylinder 24 to move and bend laterally; during this process, the first limiting post 19 laterally blocks and limits the middle part of the pipe fitting, and the second pressing block 36 reverses the end of the pipe fitting to form a concave shape, realizing the synchronous and precise processing of lateral bending and end concave; When different specifications of pipe fittings need to be processed, the lifting plate 15 can be driven by the second electric cylinder 13 to move up and down along the guide rod 1501 to adjust the working height of the lateral bending mechanism to adapt to different specifications of pipe fittings. After bending is completed, first control the second cylinder 28 to reset, so that the bending cylinder 24 returns to its original position. Then control the first cylinder 12 to lift the first pressure block 29, and the spring 31 releases its elastic force to push the pipe out for easy removal.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A device for bending and processing blast protection pipe fittings, characterized in that, Includes a U-shaped protective tube (37) to be processed, a base plate (1), a frame support assembly fixed to the upper end face of the base plate (1), a pressing drive mechanism set on the side of the frame support assembly, a lifting drive mechanism fixed to the top of the frame support assembly, a pipe fitting limiting mechanism fixed to the side of the frame support assembly, a lateral bending mechanism set on the moving end of the lifting drive mechanism, an elastic support mechanism set on the upper end of the lateral bending mechanism, and an end concave forming mechanism fixed to the upper end face of the base plate (1); One end of the U-shaped protective tube (37) to be processed is inserted into the fitting limiting mechanism and extends to the end concave forming mechanism. The other end of the U-shaped protective tube (37) is inserted into the lateral bending mechanism. The pressing drive mechanism is located directly above the U-shaped protective tube (37).

2. The blast protection pipe bending processing device according to claim 1, characterized in that, The frame support assembly includes a first support block (2) fixed to one side of the upper end face of the base plate (1), a second support block (3) fixed to the other side of the upper end face of the base plate (1), a connecting plate (4) fixed to the top of the first support block (2) and the second support block (3), a fixing column (5) fixed to the upper part between the first support block (2) and the second support block (3), and a first connecting block (6) fixed to the lower part between the first support block (2) and the second support block (3). The axial direction of the fixed column (5) is parallel to the upper end face of the base plate (1), and the length direction of the first connecting block (6) is parallel to the axial direction of the fixed column (5).

3. The blast protection pipe bending processing device according to claim 2, characterized in that, The pressing drive mechanism includes a vertical plate (7) fixed to the outer wall of the second support block (3), a first electric cylinder (8) fixed to the outer wall of the vertical plate (7), a sliding sleeve (9) sleeved on the outer peripheral wall of the fixed column (5), a moving block (10) fixed to the outer peripheral wall of the sliding sleeve (9), a first fixed plate (11) fixed to the side wall of the moving block (10), and a first cylinder (12) fixed to the side wall of the first fixed plate (11). The lower end face of the moving block (10) is in contact with the upper end face of the first connecting block (6), the output shaft end of the first electric cylinder (8) is fixed to the side wall of the moving block (10), and the output shaft of the first cylinder (12) is set vertically downward.

4. The blast protection pipe bending processing device according to claim 2, characterized in that, The lifting drive mechanism includes a second electric cylinder (13) fixed to the side wall of the connecting plate (4), a first fixed block (14) fixed to the lower end of the output shaft of the second electric cylinder (13), a lifting plate (15) fixed to the lower end face of the first fixed block (14), two guide rods (1501) fixed to the upper end face of the base plate (1) and two guide cylinders (1502) respectively sleeved on the outer peripheral wall of the corresponding guide rods (1501). Two guide rods (1501) are symmetrically arranged on both sides below the lifting plate (15). The outer walls of the two guide cylinders (1502) are fixed to the lifting plate (15), and the inner wall of the guide cylinder (1502) slides against the outer wall of the guide rod (1501).

5. The blast protection pipe bending processing device according to claim 4, characterized in that, The pipe fitting limiting mechanism includes a second fixing plate (16) fixed to the side wall of the connecting plate (4), a second connecting block (17) fixed to the outer side wall of the second fixing plate (16), a limiting cylinder (18) fixed to the side wall of the second connecting block (17), and a first limiting post (19) fixed to the outer side wall of the second fixing plate (16). The lifting plate (15) has a first through hole (20) through it. The inner cavity of the limiting cylinder (18) is directly opposite the first through hole (20). The first limiting post (19) is located outside the limiting cylinder (18). The axial direction of the first limiting post (19) is perpendicular to the axial direction of the limiting cylinder (18).

6. The blast protection pipe bending processing device according to claim 4, characterized in that, The lateral bending mechanism includes a second fixed block (21) fixed to the upper end face of the lifting plate (15), a second through hole (22) through the side wall of the second fixed block (21), a slide rod (23) slidably disposed on the inner wall of the second through hole (22), a bending cylinder (24) fixed to one end of the slide rod (23) near the U-shaped protective tube (37), a crossbar (25) fixed to the outer peripheral wall of the bending cylinder (24), a third fixed block (26) fixed to one end of the crossbar (25) away from the bending cylinder (24), a fixed cylinder (27) fixed to the outer wall of the second fixed block (21), and a second cylinder (28) fixed to the inner wall of the fixed cylinder (27). The output shaft end of the second cylinder (28) is fixedly connected to the third fixed block (26), and the axial direction of the slide rod (23) is perpendicular to the axial direction of the bending cylinder (24).

7. The blast protection pipe bending processing device according to claim 6, characterized in that, The elastic support mechanism includes a spring (31) fixed to the upper end face of the second fixed block (21) and a fixed head (32) fixed to the upper end of the spring (31). The upper end face of the fixing head (32) is directly opposite the lower end face of the U-shaped protective tube (37), and the axial direction of the spring (31) is perpendicular to the upper end face of the base plate (1).

8. The blast protection pipe bending processing device according to claim 1, characterized in that, The end-pressing forming mechanism includes a second limiting post (33) fixed to the upper end face of the base plate (1), a bearing plate (34) fixed to the lower part of the outer peripheral wall of the second limiting post (33), a mounting ring (35) movably placed on the upper end face of the bearing plate (34), and several second pressing blocks (36) fixed to the upper end face of the mounting ring (35). The inner wall of the mounting ring (35) is in contact with the outer peripheral wall of the second limiting post (33), and several second pressure blocks (36) are evenly arranged along the circumference of the mounting ring (35).

9. The blast protection pipe bending processing device according to claim 3, characterized in that, The lower end of the output shaft of the first cylinder (12) is fixedly connected to the first pressure block (29), and the two ends of the first pressure block (29) are fixedly connected to the limit plate (30). The side walls of the two limiting plates (30) that are close to each other are in contact with the outer peripheral wall of the U-shaped protective tube (37), and the lower end face of the first pressure block (29) is directly opposite the upper end face of the U-shaped protective tube (37).

10. A bending and processing device for blast protection pipe fittings according to claim 5, characterized in that, The inner wall of the end of the U-shaped protective tube (37) passing through the first through hole (20) is in contact with the outer peripheral wall of the second limiting post (33), and the lower end face of the end is directly opposite the upper end face of the second pressure block (36); the side of the tube body of the U-shaped protective tube (37) is directly in contact with the outer peripheral wall of the first limiting post (19).

Images