Self-clamping and locking small-pipe-diameter flat end necking cold forming machine

Abstract

The invention discloses a self-clamping-locking small-pipe-diameter flat-end necking cold forming machine which comprises a workbench, a fixing rod is fixedly installed on the left side of the upper end of the workbench, and a small-pipe-diameter body is movably connected into the fixing rod; the self-clamping locking structure is fixedly arranged on the middle side of the interior of the fixing rod and used for fixing the small-pipe-diameter body. The flat end closing-in cold forming structure is fixedly installed on the right side of the upper end of the workbench and used for conducting cold forming on the right end of the small-pipe-diameter body; and the adjusting structure is movably installed in the flat-end closing-in cold forming structure and used for polishing small-pipe-diameter bodies of different sizes. According to the self-clamping and locking small-pipe-diameter flat-end closing-in cold forming machine, self-clamping and locking can be conveniently carried out on small pipe diameters, flat-end closing-in can be conveniently carried out on the small pipe diameters of different sizes, and the cold forming effect on the flat-end closing-in of the small pipe diameters is good.

Description

Technical Field

[0001] The invention relates to the technical field of small-diameter pipes, in particular to a self-clamping and locking small-diameter flat-end cold forming machine. Background Art

[0002] Flat end cold forming machine refers to a device that processes materials at room temperature to form a flat end shape. It is neither a primary forming nor a secondary forming, but an emerging and promising processing equipment. Small diameter pipes refer to pipes with a smaller inner diameter. Specifically, small diameter pipes generally refer to pipes with a smaller inner diameter, and refer to pipes with an outer diameter of ≤5mm. Flat end cold forming machine is needed in the processing of small diameter pipes. Self-clamping locking structure is needed in the use of small diameter flat end cold forming machine, so as to improve the use effect of small diameter flat end cold forming machine.

[0003] Patent announcement number CN219152105U discloses a cold forming mechanism for closing the small-diameter flat end of a lubricating oil pipe, comprising a workbench, a fixed frame welded on the top of the workbench, a cylinder connected to the top of the fixed frame, an output end of the cylinder passing through the fixed frame and then connected to an arc-shaped top plate, one side of the fixed frame is connected to a lubricating oil pipe body, and one end of the lubricating oil pipe body passes through the other side of the fixed frame; the present invention further uses a spring to drive the round rod and the pulling block to move, so that the arc-shaped clamping plate fixes the side of the lubricating oil pipe body, and when the lubricating oil pipe body is processed, the lubricating oil pipe body is fixed more firmly; the grinding sheet at the other end of the double-headed motor will grind the surface of the lubricating oil pipe body after cutting, so that the burrs at the cut part of the lubricating oil pipe body are removed, and the cut part of the lubricating oil pipe body is in a neat state, and thus the lubricating oil pipe body does not need to be heated for cutting, and the cold forming mechanism is more convenient to use.

[0004] However, most of the existing technical solutions have the following defects: 1. When clamping and locking a small pipe diameter, the limit block is pulled outward and the small pipe diameter is placed inside, so that the spring drives the limit block to clamp and lock the small pipe diameter. In actual use, the clamping and locking steps of the small pipe diameter are relatively cumbersome by pulling the limit block; 2. Ordinary flat end cold forming machines have poor cold forming effects on the flat end of pipe diameters, thus affecting the use of pipe diameters; 3. It is not convenient to close the flat ends of small-diameter pipes of different sizes. Therefore, the present invention provides a self-clamping and locking cold forming machine for closing the flat ends of small-diameter pipes to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a self-clamping and locking small-diameter flat-end cold forming machine to solve the problem proposed in the above-mentioned background technology that when clamping and locking a small-diameter tube, the limit block is pulled outward and the small-diameter tube is placed on the inside, so that the spring drives the limit block to clamp and lock the small-diameter tube. In actual use, the small-diameter tube is clamped and locked by pulling the limit block, and the clamping and locking steps for the small-diameter tube are relatively cumbersome. Ordinary flat-end cold forming machines have poor cold forming effects on the flat-end closing of the tube, which affects the use effect of the tube and is not convenient enough for the flat-end closing of small-diameter tubes of different sizes.

[0006] To achieve the above object, the present invention provides the following technical solution: a self-clamping and locking small-diameter flat-end cold forming machine, comprising a workbench, a fixing rod is fixedly installed on the left side of the upper end of the workbench, and a small-diameter body is movably connected inside the fixing rod; Also includes: A self-clamping locking structure, which is fixedly arranged on the inner middle side of the fixing rod and is used to fix the small-diameter pipe body; A flat end closing cold forming structure, which is fixedly installed on the upper right side of the workbench and is used for cold forming the right end of the small diameter pipe body; The adjusting structure is movably installed inside the flat end closing cold forming structure, and is used for grinding small diameter pipe bodies of different sizes.

[0007] Preferably, the self-clamping locking structure includes a connecting block, which is fixedly installed on the inner lower side of the fixed rod, and a second spring is fixedly installed on the inner middle side of the fixed rod, and a first movable block is fixedly installed on the inner side of the second spring, and a clamping plate is fixedly installed on the inner side of the first movable block, and a first spring is fixedly installed on the inner upper side of the fixed rod, and a limiting block is fixedly installed on the inner side of the first spring.

[0008] Preferably, the limit block is connected to the fixing rod in a sliding manner, and the vertical cross-section of the limit block is an "L"-shaped structure, and the inner side of the upper end of the limit block is inclined.

[0009] Preferably, the clamping plate is connected to the small-diameter body in a fitting manner, and the clamping plate is symmetrically distributed front to back about the center line of the small-diameter body.

[0010] Preferably, the flat-end closing cold forming structure includes a first cylinder, which is fixedly arranged on the inner right side of the workbench, and a movable plate is fixedly installed on the left side of the first cylinder, and a first motor is fixedly arranged on the front end of the movable plate, and a mounting rod is fixedly connected to the rear end of the first motor, and the outer side of the mounting rod is movably connected to the mounting plate, and a second movable block is fixedly installed on the outer side of the mounting plate, and a second cylinder is fixedly arranged on the inner front side of the mounting plate, and a mounting block is fixedly installed on the rear side of the second cylinder, the left end of the mounting block is movably connected to a connecting wheel, and a connecting plate is fixedly installed on the lower side of the connecting wheel, and a fixed block is movably connected to the outer side of the upper end of the connecting plate, and the fixed block is fixedly connected to the mounting plate, and the second motor is fixedly arranged on the inner lower side of the connecting plate, and a cutting knife and a movable disk are respectively fixedly installed on the outer side of the second motor.

[0011] Preferably, the mounting block is connected to the mounting plate in a sliding manner, and the mounting block is connected to the connecting wheel in a meshing manner.

[0012] Preferably, the adjustment structure includes a connecting rod, which is movably installed on the inner upper side of the movable disk, and a connecting rod is movably installed on the inner lower side of the movable disk, and the outer side of the connecting rod is movably connected to a second connecting block, and the right side of the second connecting block is fixedly connected to an outer grinding block, and the outer side of the connecting rod is movably connected to a first connecting block, and an inner grinding block is fixedly installed on the right side of the lower end of the first connecting block.

[0013] Preferably, the vertical cross-section of the first connecting block is an "L"-shaped structure.

[0014] Preferably, the connecting rod is connected to the movable disk in a rotational manner, and the connecting rod is connected to the second connecting block in a threaded manner.

[0015] Preferably, the fixing block is connected to the connecting plate in a rotational manner, and the fixing block is symmetrically distributed front to back about the center line of the mounting plate.

[0016] Compared with the prior art, the invention has the following beneficial effects: the self-clamping and locking small-diameter flat-end cold-forming machine is convenient for self-clamping and locking small-diameter pipes, convenient for flat-end cold-forming of small-diameter pipes of different sizes, and has good cold-forming effect on the flat-end cold-forming of small-diameter pipes; 1. By placing the small-diameter tube body inside the fixed rod, the small-diameter tube body pushes the limit block to slide outward on the upper side of the inside of the fixed rod, so that the limit block drives the first spring to compress, and then the small-diameter tube body moves to the upper side of the clamping plate, so that the small-diameter tube body pushes the clamping plate to slide outward, so that the clamping plate drives the first moving block to slide outward on the inner middle side of the fixed rod, and then the first moving block drives the second spring to compress, so that the small-diameter tube body moves to contact the connecting block, so that the first spring drives the limit block to slide inward, and then the limit block limits the small-diameter tube body, so that the second spring drives the first moving block to slide inward, so that the first moving block drives the clamping plate to slide inward to clamp the small-diameter tube body, which is convenient for self-clamping and locking of the small-diameter tube body; 2. By rotating the connecting rod, the connecting rod is rotated on the upper inner side of the movable disk, so that the first connecting block threadedly connected to the connecting rod moves up and down on the upper inner side of the movable disk, and then the first connecting block drives the inner grinding block to move up and down on the right inner side of the movable disk, and then the connecting rod is rotated to rotate on the lower inner side of the movable disk, so that the second connecting block threadedly connected to the connecting rod slides up and down on the lower inner side of the movable disk, and then the second connecting block drives the outer grinding block to slide up and down, so that the outer grinding block and the inner grinding block grind and remove burrs on the inner and outer sides of the small-diameter body, which is convenient for flat-end closing of small-diameter bodies of different sizes; 3. Start the second motor so that the second motor drives the cutting knife to rotate on the lower left side of the connecting plate, start the first motor so that the first motor drives the mounting rod to rotate on the left side inside the moving plate, so that the mounting plate threadedly connected to the mounting rod drives the second moving block to slide to the rear side inside the moving plate, and then the mounting plate drives the connecting plate to slide to the rear side on the lower side of the moving plate, so that the connecting plate drives the cutting knife to slide to the rear side to cut the small-diameter pipe body, start the first cylinder so that the first cylinder drives the moving plate to slide to the right side on the upper right side of the workbench, start the second cylinder so that the second cylinder drives the mounting block to slide to the front side on the rear side inside the mounting plate, so that the connecting wheel meshed with the mounting block rotates inside the mounting plate. 180°, and then the connecting wheel drives the connecting plate to rotate on the inner side of the fixed block, and the connecting wheel drives the connecting plate to rotate, so that the movable disk rotates to the right side of the small-diameter tube body, and the first motor is started, so that the connecting plate drives the movable disk to slide forward, and the first cylinder is started, so that the first cylinder drives the movable plate to slide from the right side of the upper end of the workbench to the left side, so that the movable plate drives the inner grinding block and the outer grinding block to move to the inner and outer sides of the small-diameter tube body, and the second motor is started, so that the second motor drives the movable disk to rotate, so that the movable disk drives the inner grinding block and the outer grinding block to rotate respectively to grind the inner and outer sides of the small-diameter tube body, which is convenient for grinding and deburring the small-diameter tube body, thereby ensuring that the flat end cold forming effect of the small-diameter tube body is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the connection between the workbench and the fixing rod of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional structure of the connection between the fixing rod and the small-diameter pipe body of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 This is a schematic diagram of the overall cross-sectional structure of the connection between the movable plate and the workbench of the present invention; Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle; Figure 6 It is a schematic diagram of the overall cross-sectional structure of the connection between the connecting plate and the cutting knife of the present invention; Figure 7 For the present invention Figure 6 The enlarged structural diagram at C in the middle; Figure 8 It is a schematic diagram of the overall cross-sectional structure of the connection between the movable plate and the mounting rod of the present invention; Fig. 9 For the present invention Figure 8 The enlarged structural diagram at D in the middle; Fig.10 This is a schematic diagram of the explosion structure of the mounting block and the connecting wheel of the present invention; Fig.11 It is a schematic diagram of the explosion structure of the movable disk and the connecting rod connected to each other in the present invention.

[0018] In the figure: 1. workbench; 2. fixing rod; 3. small diameter pipe body; 4. first spring; 5. limit block; 6. moving plate; 7. mounting rod; 8. first motor; 9. mounting plate; 10. cutting knife; 11. second spring; 12. connecting block; 13. first moving block; 14. clamping plate; 15. connecting plate; 16. second moving block; 17. mounting block; 18. connecting wheel; 19. second motor; 20. movable disk; 21. connecting rod; 22. first connecting block; 23. inner grinding block; 24. connecting rod; 25. second connecting block; 26. outer grinding block; 27. first cylinder; 28. second cylinder; 29. ​​fixing block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-11 The present invention provides a technical solution: a self-clamping and locking small-diameter flat-end cold forming machine, comprising: a fixed rod 2 is fixedly installed on the left side of the upper end of a workbench 1, and a small-diameter body 3 is movably connected inside the fixed rod 2, and a self-clamping and locking structure is fixedly arranged on the inner middle side of the fixed rod 2, which is used for fixing the small-diameter body 3. The small-diameter body 3 is placed inside the fixed rod 2, so that the small-diameter body 3 pushes the self-clamping and locking structure to slide outward inside the fixed rod 2, so that the self-clamping and locking structure clamps the small-diameter body 3, which is convenient for self-clamping and locking the small-diameter body 3; The flat end closing cold forming structure is fixedly installed on the upper right side of the workbench 1, and is used for cold forming the right end of the small diameter tube body 3. The flat end closing cold forming structure is started to cut and grind the small diameter tube body 3; The adjustment structure is movably installed inside the flat end closing cold forming structure, and is used for grinding small diameter pipe bodies 3 of different sizes. The adjustment structure is rotated to facilitate flat end closing of small diameter pipe bodies 3 of different sizes.

[0021] When using the self-clamping and locking small diameter flat end cold forming machine, the specific Figure 1, Figure 2 and Figure 3 In the invention, the self-clamping locking structure includes a connecting block 12, which is fixedly installed on the inner lower side of the fixed rod 2, and a second spring 11 is fixedly arranged on the inner middle side of the fixed rod 2, and a first moving block 13 is fixedly arranged on the inner side of the second spring 11, and a clamping plate 14 is fixedly arranged on the inner side of the first moving block 13, a first spring 4 is fixedly arranged on the inner upper side of the fixed rod 2, and a limiting block 5 is fixedly arranged on the inner side of the first spring 4, the limiting block 5 and the fixed rod 2 are connected in a sliding manner, and the vertical cross-section of the limiting block 5 is an "L"-shaped structure, and the inner side of the upper end of the limiting block 5 is inclined, the clamping plate 14 and the small-diameter body 3 are connected in a fitting manner, and the clamping plate 14 is symmetrically distributed front and back about the center line of the small-diameter body 3, and the small-diameter body 3 is placed inside the fixed rod 2 so that the small-diameter body The limiting block 5 is pushed to slide outward on the inner upper side of the fixed rod 2, so that the limiting block 5 drives the first spring 4 to be compressed, and then the small-diameter body 3 moves to the upper side of the clamping plate 14, so that the small-diameter body 3 pushes the clamping plate 14 to slide outward, so that the clamping plate 14 drives the first moving block 13 to slide outward on the inner middle side of the fixed rod 2, and then the first moving block 13 drives the second spring 11 to be compressed, so that the small-diameter body 3 moves to contact the connecting block 12, so that the first spring 4 drives the limiting block 5 to slide inward, and then the limiting block 5 limits the small-diameter body 3, so that the second spring 11 drives the first moving block 13 to slide inward, so that the first moving block 13 drives the clamping plate 14 to slide inward to clamp the small-diameter body 3, so as to facilitate the self-clamping and locking of the small-diameter body 3; Specific as Figure 6 , Figure 7 and Fig.11In the embodiment, the adjustment structure includes a connecting rod 21, which is movably mounted on the inner upper side of the movable disk 20, and a connecting rod 24 is movably mounted on the inner lower side of the movable disk 20, and a second connecting block 25 is movably connected to the outer side of the connecting rod 24, and an outer grinding block 26 is fixedly connected to the right side of the second connecting block 25, and a first connecting block 22 is movably connected to the outer side of the connecting rod 21, and an inner grinding block 23 is fixedly mounted on the right side of the lower end of the first connecting block 22, and the vertical cross-section of the first connecting block 22 is an "L"-shaped structure, the connecting rod 24 is connected to the movable disk 20 in a rotating manner, and the connecting rod 24 is connected to the second connecting block 25 in a threaded manner, and the connecting rod 21 is rotated to make the connecting rod 21 The movable disk 20 is rotated on the inner upper side, so that the first connecting block 22 threadedly connected to the connecting rod 21 moves up and down on the inner upper side of the movable disk 20, and then the first connecting block 22 drives the inner grinding block 23 to move up and down on the inner right side of the movable disk 20, and then the connecting rod 24 is rotated to make the connecting rod 24 rotate on the inner lower side of the movable disk 20, so that the second connecting block 25 threadedly connected to the connecting rod 24 slides up and down on the inner lower side of the movable disk 20, and then the second connecting block 25 drives the outer grinding block 26 to slide up and down, so that the outer grinding block 26 and the inner grinding block 23 grind and remove burrs on the inner and outer sides of the small-diameter body 3, which is convenient for flat-end closing of small-diameter bodies 3 of different sizes; Specific as Figure 6 , Figure 8 and Fig. 9In the embodiment, the flat end closing cold forming structure includes a first cylinder 27, which is fixedly arranged on the inner right side of the workbench 1, and a movable plate 6 is fixedly installed on the left side of the first cylinder 27, and a first motor 8 is fixedly arranged on the front end of the movable plate 6, and a mounting rod 7 is fixedly connected to the rear end of the first motor 8, and a mounting plate 9 is movably connected to the outer side of the mounting rod 7, and a second movable block 16 is fixedly installed on the outer side of the mounting plate 9, and a second cylinder 28 is fixedly arranged on the inner front side of the mounting plate 9, and a mounting block 17 is fixedly installed on the rear side of the second cylinder 28, and a connecting wheel 18 is movably connected to the left end of the mounting block 17, and a connecting plate 15 is fixedly installed on the lower side of the connecting wheel 18, and a fixed block 29 is movably connected to the outer side of the upper end of the connecting plate 15, and the fixed block 29 is fixedly connected to the mounting plate 9, and the inner lower side of the connecting plate 15 A second motor 19 is fixedly provided, and a cutting knife 10 and a movable disk 20 are fixedly installed on the outer side of the second motor 19, respectively. The start time and interval of the first cylinder 27 and the first motor 8 are set in the controller arranged at the rear side of the front end of the movable plate 6. The second motor 19 is started, so that the second motor 19 drives the cutting knife 10 to rotate at the lower side of the left end of the connecting plate 15. The first motor 8 is started, so that the first motor 8 drives the mounting rod 7 to rotate at the left side inside the movable plate 6, so that the mounting plate 9 threadedly connected to the mounting rod 7 drives the second moving block 16 to slide backward inside the movable plate 6, and then the mounting plate 9 drives the connecting plate 15 to slide backward on the lower side of the movable plate 6, so that the connecting plate 15 drives the cutting knife 10 to slide backward to cut the small-diameter body 3, so that the connecting plate 15 moves to the rear side inside the movable plate 6; Specific as Figure 4 , Figure 5 , Fig. 9 and Fig.10In the embodiment, the mounting block 17 is connected to the mounting plate 9 in a sliding manner, and the mounting block 17 is connected to the connecting wheel 18 in a meshing manner. The first cylinder 27 is started, so that the first cylinder 27 drives the movable plate 6 to slide to the right on the upper right side of the workbench 1, and the second cylinder 28 is started, so that the second cylinder 28 drives the mounting block 17 to slide to the front side on the inner rear side of the mounting plate 9, so that the connecting wheel 18 meshing with the mounting block 17 rotates 180° inside the mounting plate 9, and the fixing block 29 is connected to the connecting plate 15 in a rotating manner, and the fixing block 29 is symmetrically distributed front and back about the center line of the mounting plate 9, so that the connecting wheel 18 drives the connecting plate 1 5 is rotated on the inner side of the fixed block 29, so that the connecting wheel 18 drives the connecting plate 15 to rotate, so that the movable disk 20 rotates to the right side of the small-diameter body 3, and the first motor 8 is started, so that the first motor 8 drives the mounting rod 7 to rotate on the left side inside the movable plate 6, so that the mounting plate 9 threadedly connected with the mounting rod 7 drives the second movable block 16 to slide forward inside the movable plate 6, and then the mounting plate 9 drives the connecting plate 15 to slide forward on the lower side of the movable plate 6, so that the connecting plate 15 drives the movable disk 20 to slide forward, and the first cylinder 27 is started, so that the first cylinder 27 drives the movable plate 6 to slide from the right side of the upper end of the workbench 1 to the left side, so that the movable plate 20 The plate 6 drives the inner grinding block 23 and the outer grinding block 26 to move to the inner and outer sides of the small-diameter body 3, and the second motor 19 is started, so that the second motor 19 drives the movable disk 20 to rotate, so that the movable disk 20 drives the inner grinding block 23 and the outer grinding block 26 to rotate to grind the inner and outer sides of the small-diameter body 3, and the first cylinder 27 is started again, so that the first cylinder 27 drives the movable plate 6 to slide to the right side on the upper right side of the workbench 1, and the first motor 8 is started, so that the first motor 8 drives the mounting rod 7 to rotate on the left side inside the movable plate 6, so that the mounting plate 9 threadedly connected to the mounting rod 7 drives the second movable block 16 to slide forward inside the movable plate 6, thereby making the mounting plate 9 threadedly connected to the mounting rod 7 drive ... rotate forward inside the movable plate 6, thereby making the mounting plate 9 threadedly connected to the mounting rod 7 drive the second movable block 16 to rotate forward inside the movable plate 6, thereby making the mounting plate 9 threadedly connected to the mounting rod 7 drive the second movable block 16 to rotate forward inside the movable plate 6, thereby making the mounting plate 9 The mounting plate 9 drives the connecting plate 15 to slide forward on the lower side of the movable plate 6, so that the connecting plate 15 drives the movable disk 20 to slide forward, and the first cylinder 27 is started, so that the first cylinder 27 drives the movable plate 6 to slide from the upper right side of the workbench 1 to the left side, so that the movable plate 6 drives the inner grinding block 23 and the outer grinding block 26 to move to the inner and outer sides of the small-diameter body 3, and the second motor 19 is started, so that the second motor 19 drives the movable disk 20 to rotate, so that the movable disk 20 drives the inner grinding block 23 and the outer grinding block 26 to rotate respectively to grind the inner and outer sides of the small-diameter body 3, and the above operation is repeated until the small-diameter body 3 inside the fixed rod 2 is completely polished. It is convenient to grind and deburr the small-diameter body 3, thereby ensuring that the flat end of the small-diameter body 3 is cold-formed with good effect.

[0022] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0023] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-clamping and locking small-diameter flat-end cold forming machine, comprising a workbench (1), a fixing rod (2) being fixedly mounted on the left side of the upper end of the workbench, and a small-diameter tube body (3) being movably connected inside the fixing rod (2); It is characterized in that Also includes: A self-clamping locking structure, the self-clamping locking structure being fixedly arranged on the inner middle side of the fixing rod (2) and being used to fix the small-diameter pipe body (3); A flat end closing cold forming structure, the flat end closing cold forming structure is fixedly mounted on the upper right side of the workbench (1), and is used for cold forming the right end of the small diameter pipe body (3); The adjusting structure is movably mounted inside the flat end closing cold forming structure and is used for grinding small diameter pipe bodies (3) of different sizes.

2. A self-clamping and locking small-diameter flat-end cold forming machine according to claim 1, characterized in that: The self-clamping locking structure comprises a connecting block (12), the connecting block (12) being fixedly mounted on the inner lower side of the fixing rod (2), a second spring (11) being fixedly mounted on the inner middle side of the fixing rod (2), a first moving block (13) being fixedly mounted on the inner side of the second spring (11), a clamping plate (14) being fixedly mounted on the inner side of the first moving block (13), a first spring (4) being fixedly mounted on the inner upper side of the fixing rod (2), and a limiting block (5) being fixedly mounted on the inner side of the first spring (4).

3. A self-clamping and locking small-diameter flat-end cold forming machine according to claim 2, characterized in that: The limit block (5) is connected to the fixed rod (2) in a sliding manner, and the vertical cross-section of the limit block (5) is an "L"-shaped structure, and the inner side of the upper end of the limit block (5) is inclined.

4. A self-clamping and locking small-diameter flat-end cold forming machine according to claim 2, characterized in that: The clamping plate (14) and the small-diameter body (3) are connected in a fitting manner, and the clamping plate (14) is symmetrically distributed frontward and rearward about the center line of the small-diameter body (3).

5. The self-clamping and locking small-diameter flat-end cold forming machine according to claim 1, characterized in that: The flat end closing cold forming structure comprises a first cylinder (27), the first cylinder (27) being fixedly arranged on the right side of the inside of the workbench (1), and a moving plate (6) being fixedly installed on the left side of the first cylinder (27), and a first motor (8) being fixedly arranged on the front end of the moving plate (6), and a mounting rod (7) being fixedly connected to the rear end of the first motor (8), and a mounting plate (9) being movably connected to the outer side of the mounting rod (7), and a second moving block (16) being fixedly installed on the outer side of the mounting plate (9), and a second cylinder being fixedly arranged on the inner front side of the mounting plate (9) (28), and a mounting block (17) is fixedly installed on the rear side of the second cylinder (28), the left end of the mounting block (17) is movably connected to a connecting wheel (18), and a connecting plate (15) is fixedly installed on the lower side of the connecting wheel (18), and a fixing block (29) is movably connected to the outer side of the upper end of the connecting plate (15), and the fixing block (29) is fixedly connected to the mounting plate (9), and a second motor (19) is fixedly arranged on the lower side of the inner side of the connecting plate (15), and a cutting knife (10) and a movable disk (20) are respectively fixedly installed on the outer side of the second motor (19).

6. A self-clamping and locking small-diameter flat-end cold forming machine according to claim 5, characterized in that: The mounting block (17) and the mounting plate (9) are connected in a sliding manner, and the mounting block (17) and the connecting wheel (18) are connected in a meshing manner.

7. The self-clamping and locking small-diameter flat-end cold forming machine according to claim 1, characterized in that: The adjustment structure comprises a connecting rod (21), the connecting rod (21) being movably mounted on the inner upper side of the movable disk (20), and a connecting rod (24) being movably mounted on the inner lower side of the movable disk (20), and a second connecting block (25) being movably connected to the outer side of the connecting rod (24), and an outer grinding block (26) being fixedly connected to the right side of the second connecting block (25), and a first connecting block (22) being movably mounted to the outer side of the connecting rod (21), and an inner grinding block (23) being fixedly mounted to the right side of the lower end of the first connecting block (22).

8. The self-clamping and locking small-diameter flat-end cold forming machine according to claim 7, characterized in that: The vertical cross-section of the first connecting block (22) is an "L"-shaped structure.

9. The self-clamping and locking small-diameter flat-end cold forming machine according to claim 7, characterized in that: The connecting rod (24) and the movable disk (20) are connected in a rotational manner, and the connecting rod (24) and the second connecting block (25) are connected in a threaded manner.

10. The self-clamping and locking small-diameter flat-end cold forming machine according to claim 5, characterized in that: The fixing block (29) is connected to the connecting plate (15) in a rotational manner, and the fixing block (29) is symmetrically distributed frontward and rearward about the center line of the mounting plate (9).

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