A metal tube stamping die with a precise guiding structure

Abstract

This invention discloses a metal tube stamping die with a precise guiding structure, relating to the field of metal tube stamping die technology. The cylinder has an upper die groove at its bottom, and an mounting plate is located on the outer side of the upper die plate. A top block is located at the bottom of the mounting plate. Two sets of side die mechanisms are located on the top of the worktable. Each side die mechanism includes a rotating shaft, with a side die groove connected to its top. A connecting damper is located at the bottom of the side die groove, and a side die plate is mounted on the outer side of the side die groove. A lower die plate is located on the top of the worktable, and a buffer damper is located inside the worktable. An ejector rod is located on the top of the buffer damper, passing through the lower die plate. Through the side die mechanism, when the cylinder drives the upper die plate and the top block to descend, the top block presses down on the side die groove, causing the side die groove to reset around the rotating shaft. This ensures that the tube is always accurately positioned in the center of the lower die plate during stamping, preventing misalignment caused by tube tilting.

Description

Technical Field

[0001] This invention relates to the field of metal tube stamping die technology, specifically a metal tube stamping die with an accurate guiding structure. Background Technology

[0002] Metal tube stamping dies are specialized tools used for stamping metal tubes. They apply external force through a press, causing the metal tube to undergo plastic deformation within the die, thereby obtaining parts of the desired shape and size. Metal tube stamping dies can be classified into various types depending on the processing technology. However, existing metal tube stamping dies have some shortcomings, such as:

[0003] Application No.: CN202310658076.2 describes an aluminum alloy stamping die that facilitates waste removal. This equipment solves the problem that traditional stamping dies for punching aluminum alloy square tubes are prone to loosening under stress when the lower die base is fixed by tightening bolts, thus reducing the stability of the lower die base during use. However, in actual use, this equipment has difficulty in accurately positioning the tube being processed, which may lead to the failure of tube stamping without external interference.

[0004] Application No.: CN202021328595.0 describes a multi-station automatic stamping forming die for metal pipes. This equipment can accurately position multiple pipes together for forming, resulting in good forming quality and high processing efficiency, making it suitable for mass production. However, in actual use, this equipment also has difficulty in accurately positioning the pipes during processing, which may lead to problems such as difficulty in positioning the pipes during the stamping process, resulting in stamping failure.

[0005] Therefore, we propose a metal tube stamping die with an accurate guiding structure to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a metal tube stamping die with an accurate guiding structure, so as to solve the problem mentioned in the background art that current metal tube stamping dies on the market are unable to accurately position the tubes being processed, resulting in tube stamping failure.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a metal tube stamping die with an accurate guiding structure, comprising a worktable and a top plate disposed on the top of the worktable, wherein a cylinder is disposed on the top of the top plate and an upper template is installed at the bottom of the cylinder;

[0008] The cylinder has an upper mold groove at the bottom, which is fixedly engaged with the upper template. The upper template has an installation plate on the outside, and the installation plate has a top block at the bottom. The worktable has two sets of side mold mechanisms on the top, and the side mold mechanism includes a rotating shaft. The rotating shaft is rotatably connected to the top of the worktable, and the top of the rotating shaft is connected to a side mold groove. The bottom of the side mold groove is provided with a connecting damper, and a side template is installed on the outside of the side mold groove.

[0009] The workbench is equipped with a lower template at the top and a buffer damper inside the workbench. The buffer damper is equipped with an ejector rod at the top, which passes through the lower template. Two sets of side mold mechanisms are located on the outside of the lower template.

[0010] By setting up the side mold mechanism, when the side mold mechanism is not closed to stamp the pipe fitting, the side mold groove and the side platen are connected and damped and lifted, thus tilting around the rotation axis. When the pipe fitting enters the side mold mechanism, it is supported by the side platen and the bottom ejector rod for precise positioning. When the cylinder drives the upper platen and the ejector block to descend, the ejector block will press down on the side mold groove, thus causing the side mold groove to reset around the rotation axis. This ensures that the pipe fitting is always positioned in the middle of the lower platen during the stamping process, making the equipment more stable when positioning the pipe fitting and avoiding the problem of misalignment caused by the pipe fitting tilting.

[0011] As a preferred embodiment of the present invention, the top of the workbench is provided with a fixed frame, and the workbench is fixedly connected to the top plate through the fixed frame. The top of the workbench is provided with a sliding shaft, which is slidably connected to the mounting plate.

[0012] The above technical solution enables the worktable and top plate to form a stable integral structure through the fixing frame, avoiding relative displacement due to force during the stamping process and providing a solid foundation for the stamping operation. At the same time, the sliding connection between the sliding shaft and the mounting plate can accurately guide the movement trajectory of the mounting plate and the upper template, ensuring that the upper template always rises and falls vertically under the drive of the cylinder.

[0013] As a preferred embodiment of the present invention, the top of the side mold groove is provided with a fitting pad, and the top of the fitting pad can fit with the top block. The side mold groove is provided with a fixing groove on the outside, and the side mold groove is fixedly connected to the side template through the fixing groove.

[0014] The above technical solution enables the bonding pad at the top of the side mold groove to fit tightly with the top block, increasing the contact area while reducing wear, ensuring that the force exerted by the top block on the side mold groove is evenly transmitted, and preventing the side mold groove from deforming due to uneven force. In addition, the side mold groove is fixedly connected to the side template through the fixing groove. This connection method not only ensures a firm installation but also prevents the side template from loosening and falling off during the stamping process.

[0015] As a preferred embodiment of the present invention, the bottom of the side mold groove is rotatably connected to the connecting damper via a hinge, and the bottom of the connecting damper is rotatably connected to the worktable via a hinge. The side template can fit against the outer side of the lower template, the lower template is arc-shaped, and the top surface of the ejector rod is arc-shaped.

[0016] The above technical solution enables the side mold groove to rotate flexibly with the help of hinges and connecting dampers. The connecting dampers are connected to the worktable through the hinges, forming an adjustable rotation structure. When the metal tube is placed on the lower template, the side mold groove can adaptively adjust its angle under the action of the connecting dampers, so that the side template can fit tightly against the outer side of the lower template and the surface of the metal tube, thereby forming a stable lateral clamping force on the metal tube.

[0017] As a preferred technical solution of the present invention, a limiting mechanism is provided at the left end of the side mold groove, and the limiting mechanism includes a lower limiting groove, and a damper is provided at the top of the lower limiting groove. The top of the damper is connected to an upper limiting groove, and both the lower limiting groove and the upper limiting groove are provided with circular slots. The height of the lower limiting groove is horizontal with the height of the lower template.

[0018] The above technical solution enables the limiting mechanism to accurately position the metal tube axially. The lower limiting groove is level with the lower template, supporting the bottom of the metal tube. The upper limiting groove, under the action of the damper, can be adjusted in height according to the diameter of the metal tube, thus forming a clamping action between the upper and lower limiting grooves.

[0019] As a preferred technical solution of the present invention, the lower template is fixedly connected to the workbench, a device shell is installed on the left end of the workbench, and a drive mechanism is connected inside the device shell. The drive mechanism includes a drive motor, a chain assembly is installed on the drive end of the drive motor, and a first drive shaft and a second drive shaft are connected to the right end of the chain assembly.

[0020] The above technical solution enables the drive motor to simultaneously drive the first drive shaft and the second drive shaft to rotate via the chain assembly, thus realizing the synchronous drive of multiple components by a single power source.

[0021] As a preferred embodiment of the present invention, a transmission mechanism is connected to the outer side of the first drive shaft and the second drive shaft, and the transmission mechanism includes a first bevel gear set, and a transmission roller is provided on the top of the first bevel gear set. The gears connected to the outer side of the first drive shaft and the first bevel gear set on the outer side of the second drive shaft face opposite directions.

[0022] The above technical solution enables the first bevel gear set on the outer side of the first drive shaft and the second drive shaft to rotate in opposite directions, thus driving the two sets of transmission rollers to rotate in opposite directions. These opposing rotation of the transmission rollers can form a stable clamping and conveying force on the metal tube, ensuring that the metal tube maintains linear motion during transmission and avoiding deviation or skewing.

[0023] As a preferred technical solution of the present invention, a second bevel gear set is provided on the outer side of the first drive shaft and the second drive shaft, and a fan blade is provided on the top of the second bevel gear set. A fan housing is installed on the outer side of the fan blade, and the fan housing is fixedly connected to the inside of the workbench.

[0024] The above technical solution can blow away the residue remaining on the top of the stamped equipment, thereby preventing the residue from affecting the next stamping of pipe fittings and increasing the dust removal efficiency of the equipment during operation.

[0025] As a preferred technical solution of the present invention, the inside of the fan housing is rotatably connected to the fan blades via a rotating shaft, and the top of the workbench is provided with an air outlet groove, which is fixedly connected to the fan housing.

[0026] The above technical solution enables the airflow from the fan blades to be blown towards the top of the workbench through the air outlet, thereby improving the cleaning efficiency of the equipment during operation.

[0027] As a preferred technical solution of the present invention, the air outlet groove is located at the bottom of the lower template, and the top of the lower template is perpendicular to the upper template. A blade assembly is installed at the right end of the upper template groove, and two sets of grinding rollers are connected to the left end of the worktable. The grinding rollers have their own motors inside, and the grinding rollers are located at the left end of the transmission rollers.

[0028] The above technical solution enables the pipe fittings to be cut by the lifting and lowering of the blade assembly after stamping, thereby increasing the convenience of the equipment in processing pipe fittings, realizing integrated processing of stamping and cutting, and reducing the number of processes and turnaround time in metal pipe processing.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting the side mold mechanism, when the side mold mechanism is not closed to stamp the pipe, the side mold groove and the side template are connected and damped and lifted, so that they tilt around the rotation axis as the center. When the pipe enters the side mold mechanism, it is supported by the side template and the bottom ejector rod for three points to achieve accurate positioning. When the cylinder drives the upper template and the top block to descend, the top block will press down on the side mold groove, so that the side mold groove resets around the rotation axis as the center. This ensures that the pipe is always positioned in the middle of the lower template during the stamping process, making the equipment more stable when positioning the pipe and avoiding the problem of the pipe tilting and stamping misalignment.

[0030] Furthermore, the sliding rod design allows the worktable and top plate to form a stable integrated structure via a fixed frame, preventing relative displacement due to force during stamping and providing a solid foundation for the stamping operation. Simultaneously, the sliding connection between the sliding shaft and the mounting plate precisely guides the movement trajectory of the mounting plate and the upper template, ensuring that the upper template always rises and falls vertically under cylinder drive.

[0031] Furthermore, the limiting mechanism enables precise axial positioning of the metal tube. The lower limiting groove is level with the lower template, supporting the bottom of the metal tube. The upper limiting groove, under the action of the damper, can be adjusted in height according to the diameter of the metal tube, forming a clamping effect on the metal tube with the lower limiting groove. Attached Figure Description

[0032] Figure 1 This is a frontal elevation view of the present invention.

[0033] Figure 2 This is a side view of the structural structure of the present invention;

[0034] Figure 3 This is a three-dimensional structural schematic diagram of the side cross-section of the present invention;

[0035] Figure 4 For the present invention Figure 3 A magnified three-dimensional structural diagram at point A;

[0036] Figure 5 This is a three-dimensional structural schematic diagram of the present invention in frontal cross-section;

[0037] Figure 6 For the present invention Figure 5 Enlarged 3D structural diagram at point B;

[0038] Figure 7 This is a three-dimensional structural diagram of the top cover of the present invention;

[0039] Figure 8 This is a three-dimensional structural diagram of the upper mold of the present invention;

[0040] Figure 9 This is a cross-sectional three-dimensional structural diagram of the worktable of the present invention;

[0041] Figure 10 This is a three-dimensional structural diagram of the disassembled side template of the present invention;

[0042] Figure 11 This is a three-dimensional structural diagram of the driving mechanism of the present invention;

[0043] Figure 12 This is a three-dimensional structural diagram of the exhaust fan blade of the present invention.

[0044] In the diagram: 1. Workbench; 2. Top plate; 3. Cylinder; 4. Upper mold groove; 5. Upper template; 6. Mounting plate; 7. Top block; 8. Sliding shaft; 9. Side mold groove; 10. Rotating shaft; 11. Connecting damper; 12. Fitting pad; 13. Fixing groove; 14. Side template; 15. Lower template; 16. Buffer damper; 17. Ejector rod; 18. Lower limit groove; 19. Damper; 20. Upper limit groove; 21. Drive motor; 22. Chain assembly; 23. First drive shaft; 24. Second drive shaft; 25. First bevel gear assembly; 26. Transmission roller; 27. Second bevel gear assembly; 28. Exhaust fan blade; 29. ​​Fan housing; 30. Exhaust duct; 31. Blade assembly; 32. Fixing frame; 33. Device housing; 34. Grinding roller. Detailed Implementation

[0045] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0046] To address the problem of stamping failures in existing metal tube stamping dies due to the difficulty in accurately positioning the tubes during processing, the following solution is disclosed. Please refer to [link / reference]. Figures 1-12 The present invention provides a technical solution: a metal tube stamping forming mold with an accurate guiding structure, including a workbench 1 and a top plate 2 provided on the top of the workbench 1, wherein a cylinder 3 is provided on the top of the top plate 2 and an upper template 5 is installed at the bottom of the cylinder 3;

[0047] The cylinder 3 has an upper mold groove 4 at the bottom, and the upper mold groove 4 is snapped and fixed to the upper template 5. The upper template 5 has an installation plate 6 on the outside, and the bottom of the installation plate 6 has a top block 7. The top of the workbench 1 has two sets of side mold mechanisms, and the side mold mechanism includes a rotating shaft 10. The rotating shaft 10 is rotatably connected to the top of the workbench 1, and the top of the rotating shaft 10 is connected to a side mold groove 9. The bottom of the side mold groove 9 is provided with a connecting damper 11, and a side template 14 is installed on the outside of the side mold groove 9.

[0048] The workbench 1 has a lower template 15 on top, and a buffer damper 16 inside the workbench 1. The buffer damper 16 has an ejector rod 17 on top, which passes through the lower template 15. Two sets of side mold mechanisms are located on the outside of the lower template 15.

[0049] The transmission mechanism is activated to transfer the pipe fitting to the top of the lower template 15, thereby allowing the ejector rod 17 to support the bottom of the pipe fitting. Due to the connecting damper 11 in the side mold mechanism, the side mold groove 9 tilts around the rotation axis 10, causing the side mold groove 9 to tilt the side template 14, which in turn supports both sides of the pipe fitting. This ensures the pipe fitting is accurately positioned on the top of the lower template 15. Subsequently, the cylinder 3 lowers the upper mold groove 4 and the upper template 5. Simultaneously, the upper mold groove 4 lowers the mounting plate 6 and the top block 7, causing the top block 7 to press down against the top of the side mold groove 9. This causes the connecting damper 11 to contract, and the side mold groove 9 will again tilt around the rotation axis 10. 0 is the center point that drives the side template 14 to reset, so that the side template 14 and the lower template 15 form the lower mold cavity, while the upper template 5 is also pressed down, so that the buffer damper 16 contracts and the ejector rod 17 descends, so that the upper template 5 cooperates with the lower mold cavity to stamp the already positioned pipe. When the cylinder 3 drives the upper mold groove 4 and the upper template 5 to rise, the connecting damper 11 and the buffer damper 16 will extend again, so that the connecting damper 11 drives the side mold groove 9 to tilt again, so that the side template 14 tilts. At the same time, the buffer damper 16 will also drive the ejector rod 17 to rise, so that the ejector rod 17 cooperates with the side template 14 to eject the already stamped pipe to complete the stamping work.

[0050] The top of the workbench 1 is provided with a fixed frame 32, and the workbench 1 is fixedly connected to the top plate 2 through the fixed frame 32. The top of the workbench 1 is provided with a sliding shaft 8, which is slidably connected to the mounting plate 6.

[0051] The side mold groove 9 is provided with a fitting pad 12 at the top, and the top of the fitting pad 12 can fit with the top block 7. The side mold groove 9 is provided with a fixing groove 13 on the outside. The side mold groove 9 is fixedly connected to the side template 14 through the fixing groove 13. The bottom of the side mold groove 9 is rotatably connected to the connecting damper 11 through a hinge. The bottom of the connecting damper 11 is rotatably connected to the worktable 1 through a hinge. The side template 14 can fit with the outside of the lower template 15. The lower template 15 is arc-shaped, and the top surface of the ejector rod 17 is arc-shaped.

[0052] The left end of the side mold groove 9 is provided with a limiting mechanism, and the limiting mechanism includes a lower limiting groove 18, and a damper 19 is provided at the top of the lower limiting groove 18. The top of the damper 19 is connected to an upper limiting groove 20, and both the lower limiting groove 18 and the upper limiting groove 20 are provided with circular slots. The height of the lower limiting groove 18 is horizontal with the height of the lower template 15.

[0053] The lower template 15 is fixedly connected to the workbench 1. A device shell 33 is installed on the left end of the workbench 1, and a drive mechanism is connected inside the device shell 33. The drive mechanism includes a drive motor 21. A chain group 22 is installed on the drive end of the drive motor 21, and a first drive shaft 23 and a second drive shaft 24 are connected to the right end of the chain group 22.

[0054] A transmission mechanism is connected to the outside of the first drive shaft 23 and the second drive shaft 24. The transmission mechanism includes a first bevel gear set 25, and a transmission roller 26 is provided on the top of the first bevel gear set 25. The gears connected to the outside of the first drive shaft 23 and the outside of the second drive shaft 24 are facing opposite directions.

[0055] A second bevel gear set 27 is provided on the outer side of the first drive shaft 23 and the second drive shaft 24, and a fan blade 28 is provided on the top of the second bevel gear set 27. A fan housing 29 is installed on the outer side of the fan blade 28, and the fan housing 29 is fixedly connected to the inside of the workbench 1.

[0056] The fan housing 29 is rotatably connected to the fan blades 28 via a rotating shaft. The top of the workbench 1 is provided with an air outlet 30, which is fixedly connected to the fan housing 29. The air outlet 30 is located at the bottom of the lower template 15, and the top of the lower template 15 is perpendicular to the upper template 5. A blade assembly 31 is installed on the right end of the upper mold groove 4. Two sets of grinding rollers 34 are connected to the left end of the workbench 1. The grinding rollers 34 have their own motors and are located on the left end of the transmission roller 26.

[0057] Working Principle: When using this metal tube stamping die with a precise guiding structure, first connect the equipment to the power supply and the grid. Then, transfer the tube to the top of the lower die plate 15, allowing the ejector rod 17 to support the lower part of the tube. Due to the damping mechanism 11 in the side die mechanism, the side die groove 9 tilts around the rotation axis 10, causing the side die groove 9 to tilt the side die plate 14, which in turn supports both sides of the tube. This allows the tube to be accurately positioned on the top of the lower die plate 15. Subsequently, the cylinder 3 lowers the upper die groove 4 and the upper die plate 5. Simultaneously, the upper die groove 4 lowers the mounting plate 6 and the top block 7, causing the top block 7 to press down against the top of the side die groove 9. This causes the damping mechanism 11 to contract, and the side die groove 9 will rotate again. Shaft 10 drives the side template 14 to reset, so that the side template 14 and the lower template 15 form the lower mold cavity, while the upper template 5 is also pressed down, so that the buffer damper 16 contracts and the ejector rod 17 descends, so that the upper template 5 cooperates with the lower mold cavity to stamp the positioned pipe. When the cylinder 3 drives the upper mold groove 4 and the upper template 5 to rise, the connecting damper 11 and the buffer damper 16 will extend again, so that the connecting damper 11 drives the side mold groove 9 to tilt again, thereby driving the side template 14 to tilt. At the same time, the buffer damper 16 will also drive the ejector rod 17 to rise, so that the ejector rod 17 cooperates with the side template 14 to eject the stamped pipe. At the same time, the next set of pipes will also eject the stamped pipes to the top of the lower template 15 to carry out the stamping work of the next set of pipes.

[0058] When cylinder 3 is activated, its output end pushes the upper mold groove 4 and the upper template 5 to descend vertically. At the same time, it drives the outer mounting plate 6 to move down synchronously along the sliding shaft 8, so that the sliding shaft 8 ensures that the mounting plate 6 moves only in the vertical direction, eliminating horizontal sway. When the top block 7 at the bottom of the mounting plate 6 contacts the fitting pad 12 at the top of the side mold groove 9, the top block 7 applies downward pressure, forcing the side mold groove 9 to rotate inward with the rotation shaft 10 as the fulcrum. The connecting damper 11 then contracts and stores energy. At this time, the side mold groove 9 drives the side template 14 to gradually fit against the outer wall of the metal tube, and finally tightly connects with the outer side of the lower template 15 to form a closed stamping cavity. Under the combined action of the lateral clamping force of the side template 14, the bottom support force of the ejector rod 17, and the vertical pressure of the upper template 5, the metal tube is completely fixed in the preset stamping position, realizing the synchronous process of dynamic clamping to precise forming. When the key is transferred in the process, the grinding roller 34 will grind its surface, so that the debris on the surface of the tube is ground off by the grinding roller 34.

[0059] After stamping, cylinder 3 drives the upper die groove 4 and upper template 5 to rise, and the pressure of the top block 7 on the side die groove 9 is released. The connecting damper 11 releases its stored energy, pushing the side die groove 9 to rotate outward and reset, and the side template 14 separates from the metal tube; at the same time, the buffer damper 16 extends, and the ejector rod 17 pushes upward, lifting the formed metal tube from the lower template 15. At this time, the transmission mechanism is activated, and a new metal tube to be processed is transported to the lower template 15. The forming part is ejected to the unloading area by the thrust, completing one processing cycle.

[0060] When the device moves the pipe fittings, the drive mechanism inside the housing 33 drives the transmission rollers 26 to rotate in opposite directions. This means the drive motor 21 drives the chain assembly 22 to rotate, which in turn drives the first drive shaft 23 and the second drive shaft 24 to rotate. Consequently, the first drive shaft 23 and the second drive shaft 24 simultaneously drive the first bevel gear set 25 to rotate. Since the orientation of the first bevel gear set 25 on the outer side of the first drive shaft 23 is opposite to that on the outer side of the second drive shaft 24, the two sets of first bevel gear sets 25 drive the transmission rollers 26 in opposite directions. The rotation causes the transmission roller 26 to carry the pipe to the top of the lower template 15. At the same time, the first drive shaft 23 and the second drive shaft 24 will also drive the second bevel gear set 27 to rotate synchronously. This causes the second bevel gear set 27 to drive the fan blades 28 to rotate inside the fan housing 29, so that the air force is transmitted to the top of the worktable 1 through the air outlet 30, thereby blowing away the debris caused by the stamping on the top of the worktable 1. If the metal pipe needs to be cut to length, the blade set 31 at the right end of the upper mold groove 4 can descend synchronously during the stamping process, and work with the lower template 15 to complete the cutting operation, reducing the process flow time.

[0061] This completes a series of tasks. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0062] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A metal tube stamping die with an accurate guiding structure, comprising a workbench (1) and a top plate (2) provided on the top of the workbench (1), wherein a cylinder (3) is provided on the top of the top plate (2) and an upper template (5) is installed at the bottom of the cylinder (3); Its features are: The cylinder (3) has an upper mold groove (4) at the bottom, and the upper mold groove (4) is fixedly engaged with the upper template (5). The upper template (5) has an installation plate (6) on the outside. The installation plate (6) has a top block (7) at the bottom. The workbench (1) has two sets of side mold mechanisms at the top. The side mold mechanism includes a rotating shaft (10). The rotating shaft (10) is rotatably connected to the top of the workbench (1). The rotating shaft (10) is connected to a side mold groove (9) at the top. The side mold groove (9) has a connecting damper (11) at the bottom. The side template (14) is installed on the outside of the side mold groove (9). The workbench (1) is provided with a lower template (15) at the top, and a buffer damper (16) is provided inside the workbench (1), and an ejector rod (17) is provided at the top of the buffer damper (16). The ejector rod (17) passes through the lower template (15), and two sets of side mold mechanisms are located outside the lower template (15). The left end of the side mold groove (9) is provided with a limiting mechanism, and the limiting mechanism includes a lower limiting groove (18), and a damper (19) is provided at the top of the lower limiting groove (18). The top of the damper (19) is connected to an upper limiting groove (20), and both the lower limiting groove (18) and the upper limiting groove (20) are provided with circular slots. The height of the lower limiting groove (18) is horizontal to the height of the lower template (15). The lower template (15) is fixedly connected to the workbench (1). The workbench (1) has a device shell (33) installed on its left end, and a drive mechanism is connected inside the device shell (33). The drive mechanism includes a drive motor (21). A chain assembly (22) is installed on the drive end of the drive motor (21), and a first drive shaft (23) and a second drive shaft (24) are connected to the right end of the chain assembly (22). A transmission mechanism is connected to the outside of the first drive shaft (23) and the second drive shaft (24), and the transmission mechanism includes a first bevel gear set (25), and a transmission roller (26) is provided on the top of the first bevel gear set (25). The gears of the first drive shaft (23) connected to the outside of the first bevel gear set (25) and the second drive shaft (24) connected to the outside of the first bevel gear set (25) face opposite directions. The first drive shaft (23) and the second drive shaft (24) are provided with a second bevel gear set (27), and the top of the second bevel gear set (27) is provided with a fan blade (28), and a fan housing (29) is installed on the outside of the fan blade (28). The fan housing (29) is fixedly connected to the inside of the workbench (1). The fan housing (29) is rotatably connected to the fan blades (28) via a rotating shaft, and the top of the workbench (1) is provided with an air outlet groove (30), and the air outlet groove (30) is fixedly connected to the fan housing (29); The air outlet groove (30) is located at the bottom of the lower template (15), and the top of the lower template (15) is perpendicular to the upper template (5). A blade assembly (31) is installed at the right end of the upper mold groove (4). Two sets of grinding rollers (34) are connected to the left end of the workbench (1). The grinding rollers (34) have their own motors inside, and the grinding rollers (34) are located at the left end of the transmission rollers (26).

2. The metal tube stamping die with accurate guiding structure according to claim 1, characterized in that, The workbench (1) is provided with a fixed frame (32) on the top, and the workbench (1) is fixedly connected to the top plate (2) through the fixed frame (32). The workbench (1) is provided with a sliding shaft (8) on the top, and the sliding shaft (8) is slidably connected to the mounting plate (6).

3. The metal tube stamping die with accurate guiding structure according to claim 2, characterized in that, The side mold groove (9) is provided with a fitting pad (12) at the top, and the top of the fitting pad (12) can fit with the top block (7). The side mold groove (9) is provided with a fixing groove (13) on the outside. The side mold groove (9) is fixedly connected to the side template (14) through the fixing groove (13).

4. The metal tube stamping die with accurate guiding structure according to claim 3, characterized in that, The bottom of the side mold groove (9) is rotatably connected to the connecting damper (11) via a hinge, and the bottom of the connecting damper (11) is rotatably connected to the worktable (1) via a hinge. The side template (14) can fit against the outside of the lower template (15). The lower template (15) is arc-shaped, and the top surface of the ejector rod (17) is arc-shaped.

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