Pipe cold-drawing machining device

Abstract

The utility model provides a cold-drawing processing device for pipe fittings, which relates to the technical field of cold-drawing processing devices for pipe fittings and comprises a pipe fitting pulling clamp and a cold-drawing processing device, the driving device for horizontal movement comprises a sliding block, the pipe fitting pulling clamp is fixedly assembled on the sliding block, and the sliding block is used for driving the pipe fitting pulling clamp to move horizontally; the pipe fitting positioning and guiding sleeve is used for positioning and guiding the pipe fitting; the pipe end supporting piece is used for supporting the end, away from the pipe pulling clamp, of the pipe; according to the device, the driving device for horizontal movement is used for driving the pipe fitting pulling clamp to move horizontally, the pipe fitting pulling clamp is used for pulling the pipe fitting, the pulled pipe fitting is supported and positioned through the pipe fitting positioning guide sleeve and the pipe fitting end supporting piece, and the stability of the pipe fitting in the cold drawing process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe cold drawing processing devices, in particular to a pipe cold drawing processing device. Background Art

[0002] Cold drawing is a material processing technology used for metal materials. Cold drawing refers to drawing the material at room temperature in order to achieve a certain shape and certain mechanical properties. For cold drawing of pipes, one end of the pipe is fixed at room temperature, and then a pulling force is applied to the other end, so that the pipe is stretched and squeezed to achieve the required diameter.

[0003] The existing cold drawing machine does not have an auxiliary positioning function. During the cold drawing process, the steel pipe is prone to displacement or vibration due to its excessive length, which affects the processing accuracy of the steel pipe. Utility Model Content

[0004] The utility model aims to provide a pipe cold drawing processing device, which drives a pipe pulling clamp to move horizontally through a horizontal movement driving device, and uses the pipe pulling clamp to pull the pipe. The pulled pipe is supported and positioned by a pipe positioning guide sleeve and a pipe end support, thereby improving the stability of the pipe during the cold drawing process.

[0005] The utility model provides a pipe cold drawing processing device, comprising:

[0006] Pipe pulling fixture;

[0007] A driving device for horizontal movement, comprising a slider, the pipe pulling fixture is fixedly mounted on the slider, and the slider is used to drive the pipe pulling fixture to move horizontally;

[0008] A pipe positioning guide sleeve, which is used for positioning and guiding the pipe;

[0009] The pipe end support is used to support one end of the pipe away from the pipe pulling clamp.

[0010] As a further optimization solution, in order to realize the cold drawing of pipe fittings, it also includes:

[0011] A cold drawing die, which is located between the pipe positioning guide sleeve and the pipe pulling fixture;

[0012] The operating table, the driving device for horizontal movement, the pipe positioning guide sleeve and the cold drawing die are all fixedly assembled on the upper end of the operating table;

[0013] The pipe end support is fixedly assembled on an end portion of the operating platform away from the pipe pulling clamp.

[0014] As a further optimization solution, in order to smoothly drive the pipe pulling fixture to move, the horizontal movement driving device includes:

[0015] There are four mounting plates, two of which are fixedly mounted at the four corners of the upper surface of the operating table;

[0016] Long screws are rotatably mounted between the two mounting upright plates on the same side, and the slider is screwed onto the two long screws, and the bottom surface of the slider is slidably fitted with the upper surface of the operating table;

[0017] There are two drive motors distributed in the front and rear, the rotating shafts of the two drive motors are respectively fixedly connected to the ends of the long screws on the same side, and the housings of the drive motors are fixedly connected to the adjacent mounting vertical plates.

[0018] As a further optimization scheme, in order to position and guide the pipe being pulled and improve the stability of the pipe movement during the pulling process, the pipe positioning guide sleeve includes:

[0019] The sleeve body has a bottom surface which is a flat surface for easy fixation;

[0020] There are four first cylinders, which are evenly and fixedly assembled in the middle of the inner annular surface of the sleeve body, and the telescopic inner ends of the first cylinders are fixedly assembled with arc plates, and the arc plates are evenly and movably clamped with balls on one side away from the corresponding first cylinders, and the balls are in contact with the outer wall of the pipe;

[0021] A liquid lubricant supply structure is arranged between the arc plate and the sleeve body.

[0022] As a further optimization solution, in order to reduce the friction between the ball and the outer wall of the pipe, so that the pipe can be pulled more smoothly, the liquid lubricant supply structure includes:

[0023] A cavity is provided in the curved plate;

[0024] The arc-shaped plate is evenly provided with drainage holes on one side away from the first cylinder, and the drainage holes are connected to the cavity, and the drainage holes are spaced apart from the balls;

[0025] The liquid guide tube penetrates through the outer wall of the sleeve body and is fixedly connected with the cavity.

[0026] As a further optimization solution, in order to stably clamp one end of the pipe to be clamped, the pipe pulling clamp includes:

[0027] A support seat, which is fixedly assembled on the slider;

[0028] A circular plate fixedly mounted on the support seat;

[0029] A second cylinder is fixedly connected to one end surface of the circular plate, and a telescopic rod of the second cylinder penetrates the circular plate;

[0030] The clamping structure is assembled on the other side end surface of the circular plate, and the telescopic rod of the second cylinder is used in conjunction with the clamping structure.

[0031] As a further optimization solution, in order to ensure that the pipe is subjected to a stable and uniform pulling force, the clamping structure includes:

[0032] The outer ring is coaxially fixedly mounted on the end surface of the circular plate away from the second cylinder;

[0033] The front and rear side walls of the outer ring are both fixedly equipped with a third cylinder, and the telescopic rods of the third cylinders all penetrate the same side of the outer wall of the outer ring, and the ends of the telescopic rods of the third cylinders are fixedly equipped with outer clamping plates;

[0034] The inner elastic clamping plate has two inner elastic clamping plates symmetrically distributed on the upper and lower ends of the telescopic rod of the second cylinder, and the ends of the two inner elastic clamping plates away from the second cylinder are symmetrically integrally formed with inclined plates, and a conical space is formed between the upper and lower inclined plates;

[0035] The conical block is inserted into the conical space between the upper and lower inclined plates. The size of the conical block is larger than the conical space between the upper and lower inclined plates. The conical block is fixedly connected to the end of the telescopic rod of the second cylinder.

[0036] As a further optimization solution, in order to support the end of the pipe waiting for cold drawing and ensure its stability during the cold drawing movement, the pipe end support includes:

[0037] A horizontal plate, which is fixedly mounted on an end portion of the operating table away from the pipe pulling fixture;

[0038] The support plate has an arc-shaped groove on its upper end surface, and the arc-shaped groove is used to support one end of the pipe away from the pipe pulling clamp.

[0039] As a further optimization plan, in order to clean the dust on the pipe fittings before cold drawing and improve the quality of the pipe fittings after cold drawing, it also includes:

[0040] The pipe cleaning mechanism before cold drawing is fixedly mounted on the upper end of the operating table. The pipe cleaning mechanism before cold drawing is arranged close to the pipe end support. The pipe cleaning mechanism before cold drawing includes:

[0041] The first outer ring has a bottom surface which is a flat surface for easy fixation;

[0042] There are four fourth cylinders, which are evenly and circumferentially fixedly mounted on the inner ring surface of the first outer ring. The telescopic inner ends of the fourth cylinders are fixedly mounted with a brush mounting plate, on which bristles are pasted and fixed.

[0043] As a further optimization scheme, in order to facilitate the replacement of the inner core of the mold, cold drawing is performed for pipes with different outer diameters. The cold drawing mold includes:

[0044] The second outer ring has a bottom surface which is a flat surface for easy fixation;

[0045] The replaceable mold inner core is screwed into the inner ring surface of the second outer ring, and the outer wall of the replaceable mold inner core is fixedly connected with a handle rod.

[0046] The utility model provides a pipe cold drawing processing device through improvement, which has the following improvements and advantages compared with the prior art:

[0047] Firstly, the device drives the pipe pulling fixture to move horizontally through a horizontal movement driving device, and uses the pipe pulling fixture to pull the pipe. The pulled pipe is supported and positioned by the pipe positioning guide sleeve and the pipe end support, thereby improving the stability of the pipe during the cold drawing process, avoiding displacement or vibration due to excessive length of the pipe, and ensuring the processing accuracy of the steel pipe.

[0048] Secondly, liquid lubricant is supplied between the ball and the outer wall of the pipe through the liquid lubricant supply structure, and the friction between the ball and the outer wall of the pipe is reduced by the liquid lubricant, so that the pipe can be pulled more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0050] Figure 1 It is a schematic diagram of the structure of the utility model;

[0051] Figure 2 This is a schematic cross-sectional view of the pipe positioning guide sleeve structure of the utility model;

[0052] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0053] Figure 4 This is a schematic diagram of the structure of the pipe pulling clamp of the utility model;

[0054] Figure 5 It is a schematic diagram of the structure of the cleaning mechanism before cold drawing of pipe fittings of the utility model.

[0055] Description of reference numerals:

[0056] 1-operating table, 2-pipe positioning guide sleeve, 21-sleeve body, 22-first cylinder, 23-arc plate, 24-ball, 3-horizontal movement drive device, 31-mounting plate, 32-long screw, 33-drive motor, 34-slider, 4-pipe pulling fixture, 41-support seat, 42-round plate, 43-second cylinder, 44-clamping structure, 441-outer ring, 442-third cylinder, 443-outer clamp, 444-inner elastic clamping plate, 445-inclined plate, 446-conical block, 5-cold drawing die, 51-second outer ring, 52-replaceable die inner core, 6-pipe end support, 61-cross plate, 62-support plate, 7-pipe cleaning mechanism before cold drawing, 71-first outer ring, 72-fourth cylinder, 73-brush mounting plate, 8-handle rod, 9-liquid lubricant supply structure, 91-cavity, 92-drainage hole, 93-liquid guide tube. DETAILED DESCRIPTION

[0057] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0059] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0060] See also Figure 1-5 The utility model provides a technical solution: a pipe cold drawing processing device, comprising:

[0061] Pipe pulling fixture 4;

[0062] A driving device 3 for horizontal movement, comprising a slider 34, on which the pipe pulling fixture 4 is fixedly mounted, and the slider 34 is used to drive the pipe pulling fixture 4 to move horizontally;

[0063] A pipe positioning guide sleeve 2, which is used for positioning and guiding the pipe;

[0064] The pipe end support 6 is used to support one end of the pipe away from the pipe pulling clamp 4 .

[0065] The device drives the pipe pulling clamp 4 to move horizontally through the horizontal movement driving device 3, and uses the pipe pulling clamp 4 to pull the pipe. The pulled pipe is supported and positioned by the pipe positioning guide sleeve 2 and the pipe end support 6, thereby improving the stability of the pipe during the cold drawing process.

[0066] In some embodiments, cold drawing of the pipe fitting is performed, further comprising:

[0067] A cold drawing die 5, which is located between the pipe positioning guide sleeve 2 and the pipe pulling fixture 4;

[0068] The operating table 1, the horizontal movement driving device 3, the pipe positioning guide sleeve 2 and the cold drawing die 5 are all fixedly assembled on the upper end of the operating table 1;

[0069] The pipe end support 6 is fixedly assembled on one end of the operating table 1 away from the pipe pulling fixture 4; the operating table 1 is used as the main table surface for installing various components, and the pulled pipe passes through the cold drawing die 5 to be cold drawn.

[0070] In some embodiments, in order to smoothly drive the pipe pulling fixture 4 to move, the horizontal movement driving device 3 includes:

[0071] There are four mounting plates 31, two of which are fixedly mounted at the four corners of the upper surface of the operating table 1;

[0072] Long screws 32 are rotatably mounted between the two mounting upright plates 31 on the same side of the front and rear sides, and the sliders 34 are screwed on the two long screws 32, and the bottom surface of the sliders 34 is slidably fitted with the upper surface of the operating table 1;

[0073] There are two drive motors 33 distributed at the front and rear, and the rotating shafts of the two drive motors 33 are respectively fixedly connected to the ends of the long screw rods 32 on the same side, and the housings of the drive motors 33 are fixedly connected to the adjacent mounting vertical plates 31 .

[0074] The two drive motors 33 work synchronously, and the two long screws 32 are driven to rotate clockwise by the two drive motors 33, which can drive the slider 34 screwed thereon to slide rightward. The long screws 32 and the upper surface of the operating table 1 guide and support the slider 34 to ensure the smooth movement of the slider 34.

[0075] In some embodiments, in order to position and guide the pipe being pulled and improve the stability of the pipe movement during the pulling process, the pipe positioning guide sleeve 2 includes:

[0076] The sleeve body 21 has a bottom surface which is a flat surface for easy fixation;

[0077] There are four first cylinders 22, which are evenly and fixedly assembled in the middle of the inner ring surface of the sleeve body 21. The telescopic inner end of the first cylinder 22 is fixedly assembled with an arc plate 23, and the arc plate 23 is evenly and movably clamped with a ball 24 on one side away from the corresponding first cylinder 22, and the ball 24 is in contact with the outer wall of the pipe;

[0078] A liquid lubricant supply structure 9 is installed between the arc plate 23 and the sleeve body 21. The four first cylinders 22 are connected to the external air supply structure and operate synchronously. The first cylinders 22 drive the balls 24 on the arc plate 23 to fit the outer wall of the pipe.

[0079] In some embodiments, in order to reduce the friction between the ball 24 and the outer wall of the tube, so that the tube can be pulled more smoothly, the liquid lubricant supply structure 9 includes:

[0080] A cavity 91 is provided in the arc-shaped plate 23;

[0081] The side of the arc plate 23 away from the corresponding first cylinder 22 is evenly provided with drainage holes 92, and the drainage holes 92 are connected to the cavity 91, and the drainage holes 92 are spaced apart from the balls 24;

[0082] The liquid guide tube 93 passes through the outer wall of the sleeve body 21 and is fixedly connected with the cavity 91. Liquid lubricant can be injected into the cavity 91 through the liquid guide tube 93. When not in use, the end of the liquid guide tube 93 is blocked by a blocking cap. In other embodiments, a valve can also be installed on the liquid guide tube 93, and the liquid lubricant is injected between the ball 24 and the outer wall of the pipe through the drainage hole 92.

[0083] In some embodiments, in order to stably clamp one end of the pipe to be clamped, the pipe pulling clamp 4 includes:

[0084] A support seat 41, which is fixedly assembled on the slider 34;

[0085] The circular plate 42 is fixedly mounted on the support seat 41;

[0086] A second cylinder 43, which is fixedly connected to one end surface of the circular plate 42, and a telescopic rod of the second cylinder 43 passes through the circular plate 42;

[0087] The clamping structure 44 is mounted on the other side end face of the circular plate 42. The telescopic rod of the second cylinder 43 cooperates with the clamping structure 44. The second cylinder 43 is connected to the external air supply system and is used to control part of the structure in the clamping structure 44 to expand and clamp the end of the pipe.

[0088] In some embodiments, in order to ensure that the pipe is subjected to a stable and uniform pulling force, the clamping structure 44 includes:

[0089] The outer ring 441 is coaxially fixedly mounted on the end surface of the circular plate 42 away from the second cylinder 43;

[0090] The front and rear side walls of the outer ring 441 are fixedly mounted with a third cylinder 442, and the telescopic rods of the third cylinder 442 penetrate the same side of the outer wall of the outer ring 441, and the ends of the telescopic rods of the third cylinder 442 are fixedly mounted with an outer clamping plate 443;

[0091] The front and rear third cylinders 442 are connected to the external air supply system, and the two third cylinders 442 work synchronously. The third cylinders 442 extend to drive the two outer clamping plates 443 to clamp on the outer wall of the end of the pipe;

[0092] The inner elastic clamping plate 444 has two inner elastic clamping plates 444 symmetrically distributed on the telescopic rod of the second cylinder 43, and the ends of the two inner elastic clamping plates 444 away from the second cylinder 43 are symmetrically integrally formed with an inclined plate 445, and a conical space is formed between the upper and lower inclined plates 445;

[0093] The conical block 446 is inserted into the conical space between the upper and lower inclined plates 445. The size of the conical block 446 is larger than the conical space between the upper and lower inclined plates 445. The conical block 446 is fixedly connected to the end of the telescopic rod of the second cylinder 43. The retraction of the second cylinder 43 can drive the conical block 446 to move right, and the conical block 446 is used to squeeze the conical space formed between the upper and lower inclined plates 445, so that the inner elastic clamping plate 444 is deformed, and the upper and lower inclined plates 445 are opened outward, and the upper and lower inclined plates 445 are used to squeeze and expand the end of the pipe fitting.

[0094] In some embodiments, in order to support one end of the pipe waiting for cold drawing and ensure its stability during the cold drawing process, the pipe end support 6 includes:

[0095] A horizontal plate 61, which is fixedly mounted on an end portion of the operating platform 1 away from the pipe pulling fixture 4;

[0096] The upper end surface of the support plate 62 is provided with an arc-shaped groove, and the arc-shaped groove is used to support the end of the pipe away from the pipe pulling fixture 4.

[0097] In some embodiments, in order to clean dust from the tube before cold drawing and improve the quality of the tube after cold drawing, the method further includes:

[0098] The pipe cleaning mechanism 7 before cold drawing is fixedly assembled on the upper end of the operating table 1. The pipe cleaning mechanism 7 before cold drawing is arranged near the pipe end support 6. The pipe cleaning mechanism 7 before cold drawing includes:

[0099] The first outer ring 71 has a bottom surface which is a flat surface for easy fixation;

[0100] There are four fourth cylinders 72. The four fourth cylinders 72 are evenly and circumferentially fixedly assembled on the inner ring surface of the first outer ring 71. The telescopic inner end of the fourth cylinder 72 is fixedly assembled with a bristle mounting plate 73, and the bristles 74 are pasted and fixed on the bristle mounting plate 73. The fourth cylinder 72 is connected to the external air supply system, and the four fourth cylinders 72 work synchronously. The extension of the fourth cylinder 72 drives the bristles 74 on the bristle mounting plate 73 to fit the outer wall of the pipe fitting, so as to clean the dust on the outer wall of the moving pipe fitting.

[0101] In some embodiments, in order to facilitate the replacement of the inner core of the mold and to perform cold drawing on pipes with different outer diameters, the cold drawing mold 5 includes:

[0102] The second outer ring 51 has a bottom surface which is a flat surface for easy fixation, and an inner surface of the second outer ring 51 is provided with an internal thread;

[0103] The replaceable mold inner core 52 is screwed into the inner ring surface of the second outer ring 51. The outer wall of the replaceable mold inner core 52 is fixedly connected with a handle bar 8. The handle bar 8 is designed to facilitate the screw connection and replacement of the replaceable mold inner core 52. The main body of the replaceable mold inner core 52 is an external threaded ring body, and the inner diameter size of the external threaded ring body is selected according to needs.

[0104] In some embodiments, a conical hole is coaxially provided at the left end of the inner hole of the ring body, and the conical hole facilitates the insertion of the pipe fitting.

[0105] Working principle:

[0106] The right end of the pipe to be processed is passed through the pipe cold drawing cleaning mechanism 7, the pipe positioning guide sleeve 2, and the cold drawing die 5 in sequence, and finally clamped in the pipe pulling fixture 4, and the end of the pipe away from the pipe pulling fixture 4 is placed on the pipe end support 6;

[0107] First, the fourth cylinder 72 is extended to drive the bristles 74 on the brush mounting plate 73 to fit the outer wall of the pipe fitting, so as to clean the dust on the outer wall of the moving pipe fitting; then, the first cylinder 22 is driven to drive the ball bearings 24 on the arc plate 23 to fit the outer wall of the pipe fitting, so as to position and guide the pipe fitting being pulled; then, the horizontal movement driving device 3 is started, and the two long screws 32 are driven to rotate clockwise by two driving motors 33, which can drive the slider 34 screwed thereon to slide to the right. The long screws 32 and the upper surface of the operating table 1 are guided and supported to ensure the stability of the movement of the slider 34. The slider 34 drives the pipe pulling fixture 4 to pull the pipe fitting to the right, and the pipe fitting passes through the cold drawing die 5 to realize the cold drawing of the pipe fitting.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A pipe cold drawing device, characterized in that: include: Pipe pulling fixture (4); A driving device (3) for horizontal movement, comprising a slider (34), the pipe pulling fixture (4) being fixedly mounted on the slider (34), and the slider (34) being used to drive the pipe pulling fixture (4) to move horizontally; A pipe fitting positioning guide sleeve (2), which is used for positioning and guiding the pipe fitting; The pipe end support (6) is used to support one end of the pipe away from the pipe pulling clamp (4).

2. A pipe cold drawing processing device according to claim 1, characterized in that: Also includes: A cold drawing die (5), which is located between the pipe positioning guide sleeve (2) and the pipe pulling fixture (4); An operating table (1), a horizontal movement driving device (3), a pipe positioning guide sleeve (2) and a cold drawing die (5) are all fixedly assembled on the upper end of the operating table (1); The pipe end support (6) is fixedly mounted on an end of the operating platform (1) that is away from the pipe pulling clamp (4).

3. A pipe cold drawing device according to claim 2, characterized in that: The horizontal movement driving device (3) comprises: There are four mounting uprights (31), two of which are fixedly mounted at the four corners of the upper surface of the operating table (1); A long screw rod (32) is rotatably mounted between the two mounting upright plates (31) on the same side, the slider (34) is screwed onto the two long screw rods (32), and the bottom surface of the slider (34) is slidably fitted with the upper surface of the operating table (1); There are two drive motors (33) distributed in the front and rear, the rotating shafts of the two drive motors (33) are respectively fixedly connected to the ends of the long screw rods (32) on the same side, and the housings of the drive motors (33) are fixedly connected to the adjacent mounting vertical plates (31).

4. A pipe cold drawing processing device according to claim 1, characterized in that: The pipe positioning guide sleeve (2) comprises: The bottom surface of the sleeve body (21) is a flat surface for easy fixation; There are four first cylinders (22), and the four first cylinders (22) are evenly and fixedly assembled in the middle of the inner annular surface of the sleeve body (21). The telescopic inner end of the first cylinder (22) is fixedly assembled with an arc plate (23). The arc plate (23) is evenly and movably engaged with a ball (24) on one side away from the corresponding first cylinder (22), and the ball (24) is in contact with the outer wall of the pipe. A liquid lubricant supply structure (9) is installed between the arc-shaped plate (23) and the sleeve body (21).

5. A pipe cold drawing device according to claim 4, characterized in that: The liquid lubricant supply structure (9) comprises: A cavity (91) is formed in the arc-shaped plate (23); The arc plate (23) is evenly provided with drainage holes (92) on one side away from the first cylinder (22), and the drainage holes (92) are connected to the cavity (91), and the drainage holes (92) and the balls (24) are spaced apart. The liquid guide tube (93) penetrates the outer wall of the sleeve body (21) and is fixedly connected with the cavity (91).

6. A pipe cold drawing device according to claim 1, characterized in that: The pipe pulling clamp (4) comprises: A support seat (41) fixedly mounted on the slider (34); A circular plate (42) fixedly mounted on the support seat (41); A second cylinder (43) is fixedly connected to an end surface of one side of the circular plate (42), and a telescopic rod of the second cylinder (43) penetrates the circular plate (42); The clamping structure (44) is mounted on the other end surface of the circular plate (42), and the telescopic rod of the second cylinder (43) is used in conjunction with the clamping structure (44).

7. A pipe cold drawing processing device according to claim 6, characterized in that: The clamping structure (44) comprises: The outer ring (441) is coaxially fixedly mounted on the end surface of the circular plate (42) away from the second cylinder (43); The front and rear side walls of the outer ring (441) are both fixedly mounted with a third cylinder (442), and the telescopic rods of the third cylinder (442) penetrate the same side of the outer wall of the outer ring (441), and the ends of the telescopic rods of the third cylinder (442) are fixedly mounted with an outer clamping plate (443); The inner elastic clamping plates (444) are symmetrically distributed on the upper and lower ends of the telescopic rod based on the second cylinder (43); inclined plates (445) are symmetrically formed in one piece at one end of the two inner elastic clamping plates (444) away from the second cylinder (43); a conical space is formed between the upper and lower inclined plates (445); A conical block (446) is inserted into the conical space between the upper and lower inclined plates (445). The size of the conical block (446) is larger than the conical space between the upper and lower inclined plates (445). The conical block (446) is fixedly connected to the end of the telescopic rod of the second cylinder (43).

8. The pipe cold drawing device according to claim 2, characterized in that: The pipe end support (6) comprises: A horizontal plate (61) is fixedly mounted on an end portion of the operating table (1) away from the pipe pulling fixture (4); The support plate (62) has an arc-shaped groove on its upper end surface, and the arc-shaped groove is used to support an end of the pipe away from the pipe pulling clamp (4).

9. A pipe cold drawing device according to claim 2, characterized in that: Also includes: A pipe cleaning mechanism (7) before cold drawing is fixedly mounted on the upper end of an operating table (1). The pipe cleaning mechanism (7) before cold drawing is arranged close to a pipe end support (6). The pipe cleaning mechanism (7) before cold drawing comprises: A first outer ring (71) having a bottom surface which is a flat surface for easy fixation; There are four fourth cylinders (72), and the four fourth cylinders (72) are evenly circumferentially fixedly mounted on the inner ring surface of the first outer ring (71). The telescopic inner end of the fourth cylinder (72) is fixedly mounted with a bristle mounting plate (73), and bristles (74) are glued and fixed on the bristle mounting plate (73).

10. A pipe cold drawing device according to claim 2, characterized in that: The cold drawing die (5) comprises: The second outer ring (51) has a bottom surface which is a flat surface for easy fixation; The replaceable mold inner core (52) is screwed into the inner ring surface of the second outer ring (51), and the outer wall of the replaceable mold inner core (52) is fixedly connected with a handle bar (8).

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