Pipe fitting punch forming device with protective structure and forming process

Abstract

The invention provides a pipe fitting punch forming device with a protection structure and a forming process, and belongs to the technical field of pipe fitting machining.The pipe fitting punch forming device with the protection structure comprises a supporting plate, a supporting seat is fixedly arranged on the supporting plate, a shell is installed on the supporting seat, a support is welded to the shell, and a protective cover is arranged on the supporting seat; a first electric push rod is installed on the support, a connecting block is connected to the bottom of the first electric push rod, a fixing plate is fixedly arranged on the connecting block, a rotating ring is rotationally connected to the rear side of the fixing plate, a fixing ring is fixedly installed in the fixing plate, a driving assembly is installed on the fixing ring, and a pressing plate is fixedly connected to the rotating ring. The pipe fitting stamping device solves the problems that an existing pipe fitting stamping device cannot support a round pipe while stamping the round pipe into a square pipe, cannot adjust the size of the pipe after stamping forming and cannot detect the size, and does not have a protection function during stamping.

Description

Technical Field

[0001] The invention relates to the technical field of pipe fitting processing, and in particular to a pipe fitting stamping forming device with a protective structure and a forming process. Background Art

[0002] Pipe stamping technology is an advanced forming process commonly used in metal pipe processing, and is widely used in aerospace, automobile manufacturing, pipeline engineering and other fields. As industrial production continues to increase the requirements for pipe precision, strength and appearance, traditional processing methods such as welding, casting and cutting can no longer meet the needs of high efficiency, high precision and complex structures. As an efficient metal forming technology, stamping uses external force to cause plastic deformation of the metal in the mold to produce pipes with specific shapes and sizes. Existing pipe stamping devices still have some defects.

[0003] The invention patent with publication number CN117680534B discloses a wheelchair manufacturing pipe fitting assembly stamping and forming device, including a base with a cavity inside, a placement area fixedly installed on the front end surface of the base, a loading and unloading slide rail fixedly installed on the placement area and the upper end surface of the base through a support rod, and a stamping mechanism for integrated stamping and forming of multiple metal pipe fittings is arranged on the loading and unloading slide rail. It can automatically position, stamp and unload multiple metal pipe fittings at the same time, so as to quickly complete the integrated stamping and forming of multiple metal pipe fittings, so as to achieve the purpose of improving production efficiency, and can avoid the rebound deformation of wheelchair armrest pipe fittings during transportation, increase the accuracy and consistency of wheelchair armrest pipe fittings after stamping and forming, and avoid direct manual participation in the stamping and forming process, reduce manual errors, and reduce potential safety risks. Although the above-mentioned device can perform synchronous processing, it cannot transform a round tube into a square tube of a specific width when in use, and cannot support the round tube while stamping it into a square tube, cannot adjust the size of the square tube after stamping and perform size detection, and does not have a protective function during stamping. Summary of the invention

[0004] In view of the problems existing in the existing pipe punching and forming devices, the present invention is proposed.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a pipe stamping forming device with a protective structure, comprising a support plate, a support seat is fixedly arranged on the support plate, a shell is installed on the support seat, a bracket is welded on the shell, a first electric push rod is installed on the bracket, a connecting block is connected to the bottom of the first electric push rod, a fixing plate is fixedly arranged on the connecting block, a swivel is rotatably connected to the rear side of the fixing plate, a fixing ring is fixedly installed in the fixing plate, a driving assembly is installed on the fixing ring, a pressure plate is fixedly connected to the swivel, a hydraulic rod is fixedly connected to the shell, and the A pressure block is connected to the bottom of the hydraulic rod, and a protective component is installed on the pressure block. The second electric push rod and the third electric push rod are fixedly connected to the two sides of the shell respectively, the second electric push rod is fixedly connected to the first limit plate, the bottom of the first limit plate is fixedly provided with a second limit plate, and the third electric push rod is fixedly connected to the third limit plate, a guide assembly is provided inside the fixing ring, sliding rods are slidably installed around the fixing ring, a first spring is fixedly connected between the fixing ring and the sliding rod, a screw is installed on the inner thread of the sliding rod, a connecting rod is fixedly connected to the screw, and a rotating block is rotatably installed on the connecting rod.

[0006] As a preferred solution of the present invention, the support plate, the support seat, the outer shell and the bracket are fixedly connected to form an integral structure, and the length and width of the outer shell are both greater than the length and width of the pressing block.

[0007] As a preferred solution of the present invention, the first limiting plate and the second limiting plate are perpendicular to each other, and the upper surface of the second limiting plate and the lower surface of the third limiting plate are in contact with each other.

[0008] As a preferred solution of the present invention, the guide assembly includes a fourth slide fixedly connected to the rotating block, and the fourth slide is slidably installed with a first connecting frame, a first slide, a second connecting frame, a second slide, a third connecting frame, a third slide and a fourth connecting frame in sequence in a counterclockwise direction, and movable grooves are provided in the first connecting frame, the second connecting frame, the third connecting frame and the fourth connecting frame.

[0009] As a preferred solution of the present invention, the first connecting frame, the first slide plate, the second connecting frame, the second slide plate, the third connecting frame, the third slide plate, the fourth connecting frame and the fourth slide plate are all slidingly connected to each other, and the first connecting frame, the second connecting frame, the third connecting frame and the fourth connecting frame are all L-shaped structures.

[0010] As a preferred solution of the present invention, the first slide plate, the second slide plate, the third slide plate and the fourth slide plate are all rotationally connected to the rotating blocks at corresponding positions, and the rotating blocks are rotationally connected to the connecting rod.

[0011] As a preferred solution of the present invention, the driving assembly includes a lap plate fixedly connected to the fixed plate, a motor is mounted on the lap plate, a transmission wheel is fixedly connected to the output shaft of the motor, and a connecting plate is fixedly provided on the rotating ring.

[0012] As a preferred solution of the present invention, the surfaces of the transmission wheel and the connecting plate are both provided with transverse convex patterns, the transmission wheel is made of rubber, and the transmission wheel and the connecting plate are in contact with each other.

[0013] As a preferred solution of the present invention, the protective assembly includes a movable plate installed in the pressure block, a connecting frame is fixedly provided on the movable plate, a guide rod is penetrated through the connecting frame, a rubber plate is fixedly connected to the bottom of the guide rod, a second spring is sleeved on the outer side of the guide rod, and the upper and lower sides of the second spring are respectively connected to the connecting frame and the rubber plate.

[0014] A punching and forming process for a pipe fitting with a protective structure comprises the following steps: S1: The housing is supported by a support plate and a support seat, and the position of the guide assembly on the fixed plate is adjusted by a first electric push rod on the bracket to facilitate subsequent detection of the stamping effect; S2: The pressing block is moved downward by extending the hydraulic rod to press the round tube into the square cavity formed by the first limiting plate, the second limiting plate and the third limiting plate. The second electric push rod and the third electric push rod are used to adjust the width of the formed square tube. S3: When the pressing block moves downward, it will drive the protective component to move downward synchronously. The protective component can move downward in advance to block the processing area to achieve the protective function. After the square tube is formed, the square tube is pushed into the guide component, and the size of the square tube is detected by the guide component. S4: According to the width and height of the processed square tube, the overall size of the guide assembly is adjusted, and the rotating ring is driven to rotate on the fixed plate through the driving assembly, so that the screw rod is pressed down by the pressure plate to drive the connecting rod and the sliding rod to move in the direction close to the central axis of the fixed ring. The first spring is compressed, and the rotating block pushes the four sides of the guide assembly at the same time to adjust the detection size of the guide assembly.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting the second electric push rod, the first limit plate, the second limit plate, the third electric push rod and the third limit plate, the second electric push rod is used to adjust the initial position of the first limit plate, and the third electric push rod is used to adjust the initial position of the third limit plate, so that the device can change the length of the cavity formed by the three limit plates, so as to subsequently punch the round tube into square tubes of different widths, which solves the problem that the existing stamping device cannot be converted from a round tube to a square tube. The device has the advantage of stronger adaptability, and the first limit plate and the third limit plate on both sides of the device can support both sides of the round tube, thereby ensuring the processing quality of the square tube.

[0016] 2. Through the guide assembly and drive assembly on the device, the device can detect the size of the square tube after forming. During the detection, the transmission wheel is driven to rotate by the motor on the drive assembly, driving the connecting plate and the rotating ring to rotate on the fixed plate. The pressure plate on the rotating ring can press down the screw rod, so that the screw rod drives the sliding rod to slide. The screw rod can adjust its own initial position in the sliding rod to facilitate the subsequent precise adjustment of the size of the guide assembly. The sliding rod can drive the connecting rod and the movable block to move, thereby pressing down the guide assembly from all sides of the guide assembly, so that the overall size of the guide assembly is reduced. The initial position of the guide assembly is adjusted by extending or shortening the first electric push rod, so that the guide assembly can keep corresponding to the position of the formed square tube. At this time, the square tube can be moved to observe whether the square tube can pass through the inside of the guide assembly or be sleeved on the outside of the guide assembly. The function of adjusting the size of the square tube after stamping and performing size detection is realized, thereby enhancing the processing accuracy of the device.

[0017] 3. Through the setting of the protective component, the device has a protective function during stamping. When the staff places the round tube in the processing area, the hydraulic rod on the shell presses down the pressing block. The protective component on the pressing block can first press down the movable plate and the rubber plate. The rubber plate can push the hand away from the device before stamping, and the second spring on the rubber plate makes the rubber plate elastic to avoid injury, thereby realizing the protective function. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in combination with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them: Figure 1 It is a schematic diagram of the overall structure of a pipe punching and forming device with a protective structure of the present invention; Figure 2 It is a schematic diagram of the connection structure of the hydraulic rod and the pressing block of the present invention; Figure 3 yes Figure 2 A magnified schematic diagram of the structure at center A; Figure 4 yes Figure 2 A magnified schematic diagram of the structure at B in the middle; Figure 5 It is a schematic diagram of the connection structure between the slide rod and the first spring of the present invention; Figure 6 This is a schematic diagram of the split structure of the connecting rod and the rotating block of the present invention; Figure 7 It is a schematic diagram of the split structure of the connecting plate and the rotating ring of the present invention; Figure 8 It is a schematic diagram of the connection structure between the movable plate and the rubber plate of the present invention; Fig. 9 yes Figure 8 A magnified schematic diagram of the structure at center C.

[0019] Figure numerals: 1, support plate; 2, support seat; 3, housing; 4, bracket; 5, first electric push rod; 6, hydraulic rod; 7, pressure block; 8, second electric push rod; 9, first limit plate; 10, second limit plate; 11, third electric push rod; 12, third limit plate; 13, guide assembly; 1301, first connecting frame; 1302, first slide plate; 1303, second connecting frame; 1304, second slide plate; 1305, third connecting frame; 1306, third slide plate; 1307, fourth connecting frame; 1308, fourth Slide plate; 1309, moving groove; 14, connecting block; 15, fixed plate; 16, swivel; 17, fixed ring; 18, driving assembly; 1801, lap plate; 1802, motor; 1803, transmission wheel; 1804, connecting plate; 19, connecting rod; 20, sliding rod; 21, first spring; 22, screw rod; 23, pressure plate; 24, protection assembly; 2401, movable plate; 2402, connecting frame; 2403, guide rod; 2404, rubber plate; 2405, second spring; 25, through hole; 26, rotating block. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0023] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] like Figure 1-Figure 9As shown, a pipe stamping forming device with a protective structure includes a support plate 1, a support seat 2 is fixedly arranged on the support plate 1, a shell 3 is installed on the support seat 2, a bracket 4 is welded on the shell 3, a first electric push rod 5 is installed on the bracket 4, a connecting block 14 is connected to the bottom of the first electric push rod 5, a fixing plate 15 is fixedly arranged on the connecting block 14, a swivel 16 is rotatably connected to the rear side of the fixing plate 15, a fixing ring 17 is fixedly installed in the fixing plate 15, a driving component 18 is installed on the fixing ring 17, a pressing plate 23 is fixedly connected to the swivel 16, a hydraulic rod 6 is fixedly connected to the shell 3, a pressing block 7 is connected to the bottom of the hydraulic rod 6, a protective component 24 is installed on the pressing block 7, and the protective component 24 can be when the hydraulic rod 6 is extended, The protective component 24 moves downward synchronously with the pressure block 7, and can push away the user's hand after moving downward, thereby realizing the protective function. The second electric push rod 8 and the third electric push rod 11 are fixedly connected on both sides of the shell 3, the second electric push rod 8 is fixedly connected to the first limit plate 9, the bottom of the first limit plate 9 is fixedly provided with a second limit plate 10, and the third electric push rod 11 is fixedly connected to the third limit plate 12. A guide component 13 is provided inside the fixed ring 17, and sliding rods 20 are slidably installed around the fixed ring 17. A first spring 21 is fixedly connected between the fixed ring 17 and the sliding rod 20. A screw rod 22 is installed on the inner thread of the sliding rod 20, a connecting rod 19 is fixedly connected to the screw 22, and a rotating block 26 is rotatably installed on the connecting rod 19. The driving assembly 18 is used to drive the swivel 16 to rotate. When the swivel 16 rotates on the fixed plate 15, the screw 22 will be pressed down through the pressure plate 23. The screw 22 will drive the sliding rod 20 and the connecting rod 19 to slide. The connecting rod 19 can push the surrounding of the guide assembly 13 through the rotating block 26, so that the size of the guide assembly 13 itself can be adjusted, so as to realize the size detection function of the formed square tube later.

[0025] In this embodiment, the support plate 1, the support seat 2, the shell 3 and the bracket 4 are fixedly connected as an integral structure. The length and width of the shell 3 are greater than the length and width of the pressing block 7, ensuring the overall stability of the device. The pressing block 7 can move up and down stably in the shell 3, thereby realizing the stamping function.

[0026] In this embodiment, the first limit plate 9 and the second limit plate 10 are perpendicular to each other, the upper surface of the second limit plate 10 and the lower surface of the third limit plate 12 are fitted together, and the square tube processing groove formed by the first limit plate 9, the second limit plate 10 and the third limit plate 12 cooperate to form a groove, and the width of the groove can be adjusted to facilitate the subsequent adjustment of the size of the formed steel pipe.

[0027] In this embodiment, the guide assembly 13 includes a fourth slide 1308 fixedly connected to the rotating block 26, and the fourth slide 1308 is slidably installed with the first connecting frame 1301, the first slide 1302, the second connecting frame 1303, the second slide 1304, the third connecting frame 1305, the third slide 1306 and the fourth connecting frame 1307 in sequence in the counterclockwise direction. The first connecting frame 1301, the second connecting frame 1303, the third connecting frame 1305 and the fourth connecting frame 1307 are all provided with movable grooves 1309. The movable grooves 1309 in the first connecting frame 1301, the second connecting frame 1303, the third connecting frame 1305 and the fourth connecting frame 1307 can allow the first slide 1302, the second slide 1304, the third slide 1306 and the fourth slide 1308 to move smoothly, so as to subsequently adjust the overall size of the guide assembly 13.

[0028] In this embodiment, the first connecting frame 1301, the first slide 1302, the second connecting frame 1303, the second slide 1304, the third connecting frame 1305, the third slide 1306, the fourth connecting frame 1307 and the fourth slide 1308 are all slidingly connected to each other, and the first connecting frame 1301, the second connecting frame 1303, the third connecting frame 1305 and the fourth connecting frame 1307 are all L-shaped structures. The first connecting frame 1301, the second connecting frame 1303, the third connecting frame 1305 and the fourth connecting frame 1307 of the L-shaped structure, each connecting frame can allow two slides to be extended and retracted, so as to facilitate subsequent synchronous adjustment when adjusting the size.

[0029] In this embodiment, the first slide 1302, the second slide 1304, the third slide 1306 and the fourth slide 1308 are all rotatably connected to the rotating blocks 26 at the corresponding positions, and the rotating blocks 26 are rotatably connected to the connecting rod 19. The rotating blocks 26 can push the slides at four positions at the same time. When the four rotating blocks 26 move synchronously, the first slide 1302, the second slide 1304, the third slide 1306 and the fourth slide 1308 will move synchronously to facilitate subsequent width detection of formed square tubes of different sizes.

[0030] In this embodiment, the driving assembly 18 includes a lap plate 1801 fixedly connected to the fixed plate 15, a motor 1802 is installed on the lap plate 1801, a transmission wheel 1803 is fixedly connected to the output shaft of the motor 1802, a connecting plate 1804 is fixedly arranged on the rotating ring 16, and a through hole 25 for placing the first spring 21 is opened on the fixed plate 15. The motor 1802 is used to drive the transmission wheel 1803 to rotate, and the transmission wheel 1803 can drive the connecting plate 1804 to rotate, thereby driving the rotating ring 16 to rotate on the fixed plate 15, so as to facilitate the subsequent adjustment of the size detection range of the device.

[0031] In this embodiment, the surfaces of the transmission wheel 1803 and the connecting plate 1804 are both provided with transverse convex patterns. The transmission wheel 1803 is made of rubber. The transmission wheel 1803 and the connecting plate 1804 abut against each other to ensure that the friction between the transmission wheel 1803 and the connecting plate 1804 is large enough, thereby driving the connecting plate 1804 to rotate and ensuring the stability of the device when working.

[0032] In this embodiment, the protective component 24 includes a movable plate 2401 installed in the pressure block 7, a connecting frame 2402 is fixedly provided on the movable plate 2401, a guide rod 2403 is penetrated in the connecting frame 2402, a rubber plate 2404 is fixedly connected to the bottom of the guide rod 2403, a second spring 2405 is sleeved on the outer side of the guide rod 2403, and the upper and lower sides of the second spring 2405 are respectively connected to the connecting frame 2402 and the rubber plate 2404. When the pressure block 7 moves downward, it will drive the movable plate 2401 to move downward. The downward movement of the movable plate 2401 will push the hand away from the processing area of ​​the device through the rubber plate 2404, and then the processing will be carried out. The second spring 2405 on the outer side of the guide rod 2403 enables the rubber plate 2404 to be retracted and retracted up and down, thereby realizing the protective function and ensuring the safety of the device when in use.

[0033] It should be noted that the present invention is a pipe stamping forming device and forming process with a protective structure. First, Figure 1 , Figure 8 and Fig. 9 As shown, the housing 3 is supported by the support plate 1 and the support seat 2, and the height position of the guide assembly 13 on the fixed plate 15 is adjusted by the first electric push rod 5 on the bracket 4, so that the lower surface of the guide assembly 13 is flush with the lower surface of the subsequent formed square tube, so as to detect the stamping effect later. The pressing block 7 is moved downward by extending the hydraulic rod 6, and the round tube is pressed into the square cavity formed by the first limit plate 9, the second limit plate 10 and the third limit plate 12. The second electric push rod 8 and the third electric push rod 11 are used to adjust the width of the formed square tube. During the downward movement of the pressing block 7, the protective assembly 24 will be driven to move downward synchronously. The protective assembly 24 can move downward in advance, thereby blocking the processing area to realize the protective function. Before pressing the round tube, when the pressing block 7 moves downward, it will drive the movable plate 2401 to move downward. The movable plate 2401 moves downward and pushes the hand away from the processing area of ​​the device through the rubber plate 2404, and then the processing is carried out. The second spring 2405 outside the guide rod 2403 enables the rubber plate 2404 to stretch up and down, thereby realizing the protective function.

[0034] like Figure 1-Figure 7As shown, according to the width and height of the processed square tube, the overall size of the guide assembly 13 is adjusted, and the transmission wheel 1803 is driven to rotate by the motor 1802 on the driving assembly 18. The transmission wheel 1803 can abut against the connecting plate 1804 and drive the connecting plate 1804 to rotate, which is convenient for the subsequent adjustment of the size detection range of the device. The transmission wheel 1803 and the connecting plate 1804 abut against each other to ensure that the friction between the transmission wheel 1803 and the connecting plate 1804 is large enough to drive the connecting plate 1804 to rotate. The connecting plate 1804 will drive the rotating ring 16 to rotate on the fixed plate 15, so that the screw rod 22 is pressed down by the pressing plate 23, and the connecting rod 19 and the sliding rod 20 are driven to move in the direction close to the central axis of the fixed ring 17. The first spring 21 is compressed, and the rotating block 26 pushes the surrounding of the guide assembly 13 at the same time to adjust the detection size of the guide assembly 13. The rotating block 26 can push the surrounding of the guide assembly 13. The first slide 1302, the second slide 1304, the third slide 1306 and the fourth slide 1308 can slide in the movable groove 1309 in the first connecting frame 1301, the second connecting frame 1303, the third connecting frame 1305 and the fourth connecting frame 1307 of the L-shaped structure, and drive the four connecting frames to shrink synchronously. After the square tube is formed, the square tube is pushed into the guide component 13 or the square tube is sleeved on the outside of the guide component 13, and the size of the square tube is detected by the guide component 13.

[0035] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pipe stamping and forming device with a protective structure, comprising a support plate (1), characterized in that: The support plate (1) is fixedly provided with a support seat (2), the support seat (2) is mounted with a housing (3), the housing (3) is welded with a bracket (4), the bracket (4) is mounted with a first electric push rod (5), the bottom of the first electric push rod (5) is connected with a connecting block (14), the connecting block (14) is fixedly provided with a fixing plate (15), the rear side of the fixing plate (15) is rotatably connected with a swivel (16), a fixing ring (17) is fixedly mounted inside the fixing plate (15), a driving component (18) is mounted on the fixing ring (17), a pressing plate (23) is fixedly connected to the swivel (16), a hydraulic rod (6) is fixedly connected to the housing (3), a pressing block (7) is connected to the bottom of the hydraulic rod (6), and a protective component is mounted on the pressing block (7) (24), a second electric push rod (8) and a third electric push rod (11) are fixedly connected to the inner sides of the housing (3), a first limit plate (9) is fixedly connected to the second electric push rod (8), a second limit plate (10) is fixedly arranged at the bottom of the first limit plate (9), a third limit plate (12) is fixedly connected to the third electric push rod (11), a guide assembly (13) is arranged inside the fixing ring (17), a slide rod (20) is slidably mounted around the fixing ring (17), a first spring (21) is fixedly connected between the fixing ring (17) and the slide rod (20), a screw rod (22) is installed on the inner thread of the slide rod (20), a connecting rod (19) is fixedly connected to the screw rod (22), and a rotating block (26) is rotatably mounted on the connecting rod (19).

2. The pipe punching and forming device with a protective structure according to claim 1, characterized in that: The support plate (1), the support seat (2), the outer shell (3) and the bracket (4) are fixedly connected to form an integral structure, and the length and width of the outer shell (3) are both greater than the length and width of the pressing block (7).

3. The pipe punching and forming device with a protective structure according to claim 1, characterized in that: The first limiting plate (9) and the second limiting plate (10) are perpendicular to each other, and the upper surface of the second limiting plate (10) and the lower surface of the third limiting plate (12) are in contact with each other.

4. The pipe punching and forming device with a protective structure according to claim 1, characterized in that: The guide assembly (13) comprises a fourth slide plate (1308) fixedly connected to the rotating block (26); the fourth slide plate (1308) is slidably mounted with a first connection frame (1301), a first slide plate (1302), a second connection frame (1303), a second slide plate (1304), a third connection frame (1305), a third slide plate (1306) and a fourth connection frame (1307) in sequence in a counterclockwise direction; and a movable groove (1309) is provided in each of the first connection frame (1301), the second connection frame (1303), the third connection frame (1305) and the fourth connection frame (1307).

5. The pipe punching and forming device with a protective structure according to claim 4, characterized in that: The first connection frame (1301), the first slide plate (1302), the second connection frame (1303), the second slide plate (1304), the third connection frame (1305), the third slide plate (1306), the fourth connection frame (1307) and the fourth slide plate (1308) are all slidably connected to each other, and the first connection frame (1301), the second connection frame (1303), the third connection frame (1305) and the fourth connection frame (1307) are all L-shaped structures.

6. The pipe punching and forming device with a protective structure according to claim 5, characterized in that: The first slide plate (1302), the second slide plate (1304), the third slide plate (1306) and the fourth slide plate (1308) are all rotatably connected to the rotating blocks (26) at corresponding positions, and the rotating blocks (26) are rotatably connected to the connecting rod (19).

7. The pipe punching and forming device with a protective structure according to claim 1, characterized in that: The driving assembly (18) comprises a lap plate (1801) fixedly connected to a fixed plate (15); a motor (1802) is mounted on the lap plate (1801); a transmission wheel (1803) is fixedly connected to an output shaft of the motor (1802); and a connecting plate (1804) is fixedly provided on the rotating ring (16).

8. The pipe punching and forming device with a protective structure according to claim 7, characterized in that: The surfaces of the transmission wheel (1803) and the connection plate (1804) are both provided with transverse convex patterns. The transmission wheel (1803) is made of rubber material. The transmission wheel (1803) and the connection plate (1804) are in contact with each other.

9. The pipe punching and forming device with a protective structure according to claim 1, characterized in that: The protection component (24) comprises a movable plate (2401) installed in the pressure block (7), a connecting frame (2402) is fixedly arranged on the movable plate (2401), a guide rod (2403) is arranged through the connecting frame (2402), a rubber plate (2404) is fixedly connected to the bottom of the guide rod (2403), a second spring (2405) is sleeved on the outer side of the guide rod (2403), and the upper and lower sides of the second spring (2405) are respectively connected to the connecting frame (2402) and the rubber plate (2404).

10. A punching and forming process for a pipe with a protective structure, using the punching and forming device for a pipe with a protective structure as claimed in claim 1, characterized in that: The following steps are involved: S1: The housing (3) is supported by the support plate (1) and the support seat (2), and the position of the guide assembly (13) on the fixed plate (15) is adjusted by the first electric push rod (5) on the bracket (4) to facilitate subsequent detection of the stamping effect; S2: the pressing block (7) is moved downward by extending the hydraulic rod (6) to press the round tube into the square cavity formed by the first limiting plate (9), the second limiting plate (10) and the third limiting plate (12); the second electric push rod (8) and the third electric push rod (11) are used to adjust the width of the formed square tube; S3: When the pressing block (7) moves downward, it drives the protection component (24) to move downward synchronously. The protection component (24) can move downward in advance, thereby blocking the processing area to achieve a protection function. After the square tube is formed, the square tube is pushed into the guide component (13), and the size of the square tube is detected by the guide component (13); S4: According to the width and height of the processed square tube, the overall size of the guide assembly (13) is adjusted, and the rotating ring (16) is driven to rotate on the fixed plate (15) by the driving assembly (18), so that the screw rod (22) is pressed down by the pressing plate (23), driving the connecting rod (19) and the sliding rod (20) to move in a direction close to the central axis of the fixed ring (17), the first spring (21) is compressed, and the rotating block (26) simultaneously pushes the four sides of the guide assembly (13) to adjust the detection size of the guide assembly (13).

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