Drawing device for seamless internal thread copper pipe machining

Abstract

The invention relates to the technical field of copper pipe machining and drawing, in particular to a drawing device for seamless internal thread copper pipe machining, which comprises a bottom plate, a fixing plate is fixedly connected to one side of the top end of the bottom plate, a drawing mold is fixedly connected to the fixing plate, and a lubricating mechanism and a cooling mechanism are arranged on the fixing plate. Vertical side plates are fixedly connected to the two sides, corresponding to the fixing plate, of the top end of the bottom plate, drawing mechanisms are arranged on the two vertical side plates, and buffering discharging mechanisms are arranged on the inner sides, corresponding to the vertical side plates and the fixing plate, of the top end of the bottom plate. The lubricating mechanism comprises a rotating ring, an annular groove is formed in the outer wall of the rotating ring, and a plurality of circular holes are formed in the annular groove in a penetrating mode; according to the invention, the friction force in the drawing process can be reduced, the abrasion to the drawing die and the seamless internal-thread copper pipe is reduced, the drawing force is uniformly distributed on the outer surface of the seamless internal-thread copper pipe, and the drawing efficiency and the drawing quality of the seamless internal-thread copper pipe are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of copper tube processing and drawing, in particular to a drawing device for processing seamless internally threaded copper tubes. Background Art

[0002] The drawing device for processing seamless internally threaded copper tubes is a plastic forming device that pulls the metal blank through the die hole by pulling force to obtain a product with the same size and shape as the die hole. It is mainly used for the drawing and forming of seamless internally threaded copper tubes. By changing the shape and size of the die, internally threaded copper tubes of different specifications can be drawn.

[0003] At present, in the prior art, lubricating liquid is sprayed on the surface of the seamless internally threaded copper tube during the drawing process, and a nozzle is used for spraying during spraying, and the nozzle is generally fixedly installed, which results in that during spraying, there are multiple outer surfaces on the outer wall of the seamless internally threaded copper tube between the nozzles, where the lubricating liquid is not sprayed, or the lubricating liquid sprayed is less, resulting in greater friction at the gap during drawing, which not only increases the energy consumption during the drawing process, but also may accelerate the wear of the drawing die and the copper tube. Similarly, due to the uneven distribution of the lubricating liquid , the drawing force will also be unevenly distributed on the surface of the copper tube. This uneven drawing force may cause the copper tube to deform, twist or even rupture during the drawing process, thereby affecting the drawing efficiency and drawing quality of the steel tube; in the drawing process, if the lubricating fluid supply is interrupted, it will have an adverse effect on the subsequent drawing quality. At the same time, during the drawing operation, the steel tube and the drawing die will come into contact, so a lot of heat will be generated, resulting in a significant temperature increase, and this excessively high temperature will destroy the lubricating fluid, causing it to lose its lubricating efficiency;

[0004] In addition, when the drawing of a seamless internal threaded copper tube is completed, the seamless internal threaded copper tube will fall directly onto the placement rack. When the seamless internal threaded copper tube falls on the placement rack, it collides with the placement rack, causing dents, deformations and scratches on the outer surface of the seamless internal threaded copper tube, affecting subsequent use. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a drawing device for processing seamless internal thread copper tubes.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a drawing device for processing seamless internal thread copper tubes, comprising a bottom plate, a fixed plate is fixedly connected to one side of the top of the bottom plate, a drawing die is fixedly connected to the fixed plate, a lubrication mechanism and a cooling mechanism are arranged on the fixed plate, both sides of the top of the bottom plate corresponding to the fixed plate are fixedly connected to vertical side plates, the two vertical side plates are provided with a drawing mechanism, and a buffer discharge mechanism is arranged on the inner side of the vertical side plate and the fixed plate corresponding to the top of the bottom plate;

[0007] The lubrication mechanism comprises a rotating ring, an annular groove is formed on the outer wall of the rotating ring, a plurality of circular holes are formed on the annular groove, an annular wiping sponge is fixedly connected to the inner wall of the rotating ring, the annular wiping sponge is in contact with the plurality of circular holes, the plurality of circular holes are used for the circulation of lubricating liquid and the infiltration of the lubricating liquid into the annular wiping sponge, and the annular wiping sponge is used for evenly applying the lubricating liquid on the outer wall of the seamless internally threaded copper tube;

[0008] The cooling mechanism includes a cooling cavity provided between the fixed plate and the drawing die. The lubricating liquid in the cooling cavity is used to cool the drawing die to prevent the temperature of the drawing die from being too high during the drawing process. A liquid outlet pipe is fixedly passed through the fixed plate. A hose is fixedly connected to the other end of the liquid outlet pipe. The hose is fixedly connected to the vertical side plate. The cooling mechanism also includes a roller. The roller rolls and squeezes the lubricating liquid in the hose and keeps the lubricating liquid in the cooling cavity in a flowing state.

[0009] Preferably, the lubrication mechanism also includes a fixed ring rotatably connected to the inner wall of the annular groove, L-shaped plates are fixedly connected on both sides of the outer wall of the fixed ring, two L-shaped plates are fixedly connected to the fixed plates, a second motor is fixedly connected to one of the L-shaped plates, a gear is fixedly connected to the driving end of the second motor through a driving shaft, an outer diameter of the gear is meshed with an external gear ring, and the external gear ring is fixedly connected to the rotating ring.

[0010] Preferably, the lubrication mechanism also includes a connecting pipe fixedly connected to the top of the vertical side plate on one side, the connecting pipe and the hose are fixedly connected, the connecting pipe and the fixed ring are fixedly connected, the diameter of the connecting pipe gradually decreases in the direction close to the fixed ring, so that the flow rate of the lubricating fluid is accelerated, and a liquid inlet pipe is fixedly penetrated on the other side of the cooling cavity, and a collection box is fixedly connected to the bottom of the rotating ring corresponding to the top of the bottom plate.

[0011] Preferably, the pulling mechanism comprises a slide groove provided at one end of the vertical side plates close to each other, the inner walls of the two slide grooves are slidably connected with a first slider and a second slider respectively, and a stretching device is fixedly connected between the first slider and the second slider.

[0012] Preferably, the cooling mechanism also includes a movable groove opened at the top of the first sliding block, the inner wall of the movable groove is slidably connected with a movable block, the movable block and the roller are rotatably connected through a rotating shaft, one end of the movable groove is connected to a circular groove, one end of the circular groove is fixedly connected with an electric push rod, and the telescopic end of the electric push rod is fixedly connected to the movable block.

[0013] Preferably, the pulling mechanism also includes a first motor fixedly connected to one end of the vertical side plate on one side, the driving end of the first motor is fixedly connected to a threaded rod, the other end of the threaded rod is rotatably connected to a slide groove on one side, the threaded rod is threadedly connected to a second slider, and a guide column is fixedly connected to the inner wall of the slide groove on the other side, and the guide column and the first slider are slidably connected.

[0014] Preferably, the buffer discharge mechanism includes a U-shaped plate and a straight plate, four connecting columns are fixedly connected between the U-shaped plate and the straight plate, the four connecting columns are arranged in two groups and are symmetrical about the center line of the straight plate, and limiting rods are fixedly connected obliquely below the corresponding connecting columns between the U-shaped plate and the straight plate.

[0015] Preferably, the outer walls of the four connecting columns are rotatably connected with support rods, and fixing grooves are provided on the outer sides of the connecting columns at both ends of the four support rods, and coil springs are fixedly connected between the four groups of fixing grooves and the connecting columns.

[0016] Preferably, a square hole is penetrated through the top of the base plate, hydraulic rods are fixedly passed through both sides of the square hole corresponding to the top of the base plate, the two telescopic ends of the hydraulic rods are fixedly connected to the two U-shaped plates respectively, and vertical poles are fixedly connected below the support rods corresponding to the top of the base plate.

[0017] Preferably, the buffer discharge mechanism also includes a placement plate fixedly connected to one side of the square hole corresponding to the bottom end of the bottom plate, a plurality of stoppers are fixedly connected to the other end of the placement plate, and a connecting plate is symmetrically fixedly connected between the placement plate and the bottom plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The lubrication mechanism can be set to rotate the annular wiping sponge and evenly apply the lubricating liquid to the outer surface of the seamless internally threaded copper tube, avoiding gaps with small spraying amounts. Therefore, the friction during the drawing process can be reduced, and the wear on the drawing die and the seamless internally threaded copper tube can be reduced. The drawing force can be evenly distributed on the outer surface of the seamless internally threaded copper tube, ensuring the drawing efficiency and drawing quality of the seamless internally threaded copper tube. In addition, during the application process, the lubricating liquid can be continuously provided through the connecting pipe. As the diameter of the connecting pipe gradually decreases, the flow rate of the lubricating liquid will increase, so that the lubricating liquid can be provided in time to avoid the situation of lubricating liquid supply interruption, thereby preventing the subsequent drawing quality from being affected.

[0020] 2. Through the cooling mechanism, the drawing die can be cooled during the drawing process to avoid the temperature of the drawing die from rising during the drawing process, thereby avoiding damage to the lubricating fluid, so that the lubricating fluid always maintains a lubricating effect, preventing the increase of adhesion between the seamless internal thread copper tube and the drawing die, reducing the drawing stress, and thus preventing the seamless internal thread copper tube from breaking. Therefore, the seamless internal thread copper tube can be protected and the service life of the drawing die can be increased;

[0021] 3. Through the buffer discharge mechanism, the seamless internal threaded copper tube can be placed on the support rod after the drawing is completed. Due to the existence of the coil spring, the seamless internal threaded copper tube can be buffered when placed to avoid dents, deformation and scratches on the outer surface of the seamless internal threaded copper tube, and the seamless internal threaded copper tube can be moved downward. When the support rod contacts the vertical rod, the support rod will tilt until the seamless internal threaded copper tube can slide off the support rod and fall on the placement plate through the square hole. Therefore, the seamless internal threaded copper tube can be protected and convenient for subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of a drawing device for processing a seamless internally threaded copper tube according to the present invention;

[0023] Figure 2 It is a top view from another angle of a drawing device for processing a seamless internally threaded copper tube according to the present invention;

[0024] Figure 3 A drawing device for processing a seamless internally threaded copper tube according to the present invention Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 A side view of a drawing device for processing a seamless internally threaded copper tube according to the present invention;

[0026] Figure 5 This is a cross-sectional view of a first slider of a drawing device for processing a seamless internally threaded copper tube according to the present invention;

[0027] Figure 6 It is a cross-sectional view of a fixing plate of a drawing device for processing a seamless internally threaded copper tube according to the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of a rotating ring of a drawing device for processing a seamless internally threaded copper tube according to the present invention;

[0029] Figure 8 It is a structural diagram of the bottom plate of a drawing device for processing seamless internally threaded copper tubes according to the present invention;

[0030] Fig. 9 This is a straight plate cutting diagram of a drawing device for processing seamless internally threaded copper tubes according to the present invention;

[0031] Fig.10 A drawing device for processing a seamless internally threaded copper tube according to the present invention Fig. 9 Enlarged view of point B in the middle.

[0032] In the figure: 1. bottom plate; 2. vertical side plate; 3. slide groove; 4. hose; 5. first slider; 6. roller; 7. connecting pipe; 8. stretching device; 9. liquid inlet pipe; 10. fixed plate; 11. drawing die; 12. stopper; 13. placement plate; 14. vertical pole; 15. first motor; 16. U-shaped plate; 17. collection box; 18. second slider; 19. threaded rod; 20. gear; 21. second motor; 22. fixed ring; 23. rotating ring; 24. L-shaped plate; 25. outer gear ring; 26. moving groove; 27. moving block; 28. circular groove; 29. ​​electric push rod; 30. cooling chamber; 31. liquid outlet pipe; 32. annular wiping sponge; 33. annular groove; 34. circular hole; 35. support rod; 36. straight plate; 37. fixed groove; 38. limit rod; 39. coil spring; 40. connecting column. DETAILED DESCRIPTION

[0033] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0034] like Figure 1-Figure 10 A drawing device for processing seamless internally threaded copper tubes shown in the figure comprises a base plate 1, a fixed plate 10 is fixedly connected to one side of the top end of the base plate 1, a drawing die 11 is fixedly connected to the fixed plate 10, a lubrication mechanism and a cooling mechanism are arranged on the fixed plate 10, vertical side plates 2 are fixedly connected to both sides of the top end of the base plate 1 corresponding to the fixed plate 10, a drawing mechanism is arranged on the two vertical side plates 2, a buffer discharge mechanism is arranged on the top end of the base plate 1 corresponding to the vertical side plates 2 and the inner side of the fixed plate 10, the outer surface of the seamless internally threaded copper tube can be continuously lubricated by the provided lubrication mechanism to ensure the drawing quality of the seamless internally threaded copper tube, the drawing die 11 can be cooled by the provided cooling mechanism to avoid affecting the lubrication effect of the lubricating liquid and prolonging the use effect of the drawing die 11, the seamless internally threaded copper tube can be drawn by the provided drawing mechanism, and the buffer discharge mechanism can be used to buffer when placing the seamless internally threaded copper tube to avoid depression, deformation and scratches on the seamless internally threaded copper tube;

[0035] like Figure 3 , Figure 7As shown, the lubrication mechanism includes a rotating ring 23, an annular groove 33 is formed on the outer wall of the rotating ring 23, a plurality of circular holes 34 are formed on the annular groove 33, an annular wiping sponge 32 is fixedly connected to the inner wall of the rotating ring 23, the annular wiping sponge 32 is in contact with the plurality of circular holes 34, the plurality of circular holes 34 are used for the circulation of lubricating liquid and the penetration into the annular wiping sponge 32, and the annular wiping sponge 32 is used to evenly apply the lubricating liquid on the outer wall of the seamless internally threaded copper tube;

[0036] like Figure 1 , Figure 6 As shown, the cooling mechanism includes a cooling chamber 30 opened between the fixed plate 10 and the drawing die 11. The lubricating liquid in the cooling chamber 30 is used to cool the drawing die 11 to prevent the temperature of the drawing die 11 from being too high during the drawing process. The fixed plate 10 is fixedly penetrated with a liquid outlet pipe 31, and the other end of the liquid outlet pipe 31 is fixedly connected to a hose 4. The hose 4 and the vertical side plate 2 are fixedly connected. The cooling mechanism also includes a roller 6, and the roller 6 rolls and squeezes the lubricating liquid in the hose 4 to keep the lubricating liquid in the cooling chamber 30 in a flowing state.

[0037] like Figure 3 , Figure 7 As shown, the lubrication mechanism also includes a fixed ring 22 rotatably connected to the inner wall of the annular groove 33, and L-shaped plates 24 are fixedly connected to both sides of the outer wall of the fixed ring 22, and the two L-shaped plates 24 are fixedly connected to the fixed plate 10. A second motor 21 is fixedly connected to one L-shaped plate 24, and the driving end of the second motor 21 is fixedly connected to the gear 20 through the driving shaft, and the outer diameter of the gear 20 is meshed and connected to the outer gear ring 25, and the outer gear ring 25 is fixedly connected to the rotating ring 23. The fixed ring 22 can be limited and fixed by the L-shaped plate 24, so that it is fixedly installed on the fixed plate 10, and the gear 20 can be rotated by the second motor 21, so that the outer gear ring 25 and the rotating ring 23 can be rotated, and the speed of the second motor 21 is at a low speed, so that the lubricating liquid can be evenly applied to the outer surface of the seamless internally threaded copper tube, ensuring the subsequent drawing quality and drawing efficiency.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 6As shown, the lubrication mechanism also includes a connecting pipe 7 fixedly connected to the top of the side vertical side plate 2, the connecting pipe 7 is fixedly connected to the hose 4, the connecting pipe 7 is fixedly connected to the fixed ring 22, and the diameter of the connecting pipe 7 gradually decreases in the direction of the connecting pipe 7 approaching the fixed ring 22, so that the flow rate of the lubricating liquid is accelerated, and a liquid inlet pipe 9 is fixedly penetrated on the other side of the cooling cavity 30, and a collecting box 17 is fixedly connected below the rotating ring 23 corresponding to the top of the bottom plate 1. The lubricating liquid can be kept in a flowing state through the hose 4 during the drawing process, and the lubricating liquid is provided to the annular wiping sponge 32, and the flow rate of the lubricating liquid increases when passing through the connecting pipe 7 with a gradually smaller diameter, and this principle is based on the conservation of flow, so during the drawing process, the lubricating liquid can be stably provided to prevent the interruption of the lubricating liquid supply and ensure the subsequent drawing effect.

[0039] like Figure 1 , Figure 2 As shown, the drawing mechanism includes a slide groove 3 opened at one end of the vertical side plate 2 close to each other, and the inner walls of the two slide grooves 3 are respectively slidably connected with a first slider 5 and a second slider 18, and a stretching device 8 is fixedly connected between the first slider 5 and the second slider 18. The stretching device 8 is similar to a stretching trolley in a precision cold-drawn tube production equipment with application number CN201620250384.7, and the internal structure is the same, so it is not described here. The first slider 5 and the second slider 18 can be limited by the slide groove 3, so that the stretching device 8 can be limited.

[0040] like Figure 1 , Figure 5 As shown, the cooling mechanism also includes a moving groove 26 opened at the top of the first slider 5, and a moving block 27 is slidably connected to the inner wall of the moving groove 26, and the moving block 27 and the roller 6 are rotatably connected through a rotating shaft. One end of the moving groove 26 is connected to a circular groove 28, and one end of the circular groove 28 is fixedly connected to an electric push rod 29, and the telescopic end of the electric push rod 29 is fixedly connected to the moving block 27. The moving block 27 can be limited by the moving groove 26, and the roller 6 on the moving block 27 can just squeeze the hose 4, so that the liquid in the hose 4 flows, and the electric push rod 29 can provide moving power for the moving block 27, and the circular groove 28 is arranged inside the first slider 5.

[0041] like Figure 1 , Figure 2 As shown, the pulling mechanism also includes a first motor 15 fixedly connected to one end of the side plate 2, a threaded rod 19 fixedly connected to the driving end of the first motor 15, the other end of the threaded rod 19 is rotatably connected to the slide 3 on one side, the threaded rod 19 is threadedly connected to the second slider 18, and a guide column is fixedly connected to the inner wall of the slide 3 on the other side, and the guide column is slidably connected to the first slider 5. The first motor 15 rotates the threaded rod 19, and the second slider 18 can be moved by the thread effect of the threaded rod 19, and the guide column can limit the first slider 5.

[0042] like Figure 1 , Figure 8 , Fig. 9 , Fig.10 As shown, the buffer discharge mechanism includes a U-shaped plate 16 and a straight plate 36, four connecting columns 40 are fixedly connected between the U-shaped plate 16 and the straight plate 36, and the four connecting columns 40 are arranged in two groups and are symmetrical about the center line of the straight plate 36. The U-shaped plate 16 and the straight plate 36 are fixedly connected to the lower side of the corresponding connecting columns 40. The U-shaped plate 16 and the straight plate 36 form a frame, and the positions of the connecting columns 40 are staggered in pairs, which is convenient for the subsequent support. The support rod 35 can be limited by the limiting rod 38 and the support rod 35 is in a horizontal state.

[0043] like Fig. 9 , Fig.10 As shown, the outer walls of the four connecting columns 40 are rotatably connected with the support rods 35, and the four ends of the four support rods 35 are provided with fixing grooves 37 on the outer sides corresponding to the connecting columns 40, and the four groups of fixing grooves 37 and the connecting columns 40 are fixedly connected with coil springs 39. The elasticity of the coil springs 39 can make the support rods 35 elastic, so when the seamless internally threaded copper tube falls on the support rods 35, it can be buffered, thereby reducing the concave deformation and scratches of the seamless internally threaded copper tube, and ensuring the quality of the seamless internally threaded copper tube.

[0044] like Figure 4 , Figure 8 As shown, a square hole is formed at the top of the bottom plate 1, and hydraulic rods are fixedly penetrated on both sides of the square hole corresponding to the top of the bottom plate 1, and the two telescopic ends of the two hydraulic rods are fixedly connected to the two U-shaped plates 16 respectively, and the bottom of the top of the bottom plate 1 corresponding to the support rod 35 is fixedly connected with a vertical rod 14, and the buffer discharge mechanism also includes a placement plate 13 fixedly connected to one side of the square hole corresponding to the bottom of the bottom plate 1, and the other end of the placement plate 13 is fixedly connected to a plurality of stoppers 12, and a connecting plate is symmetrically fixedly connected between the placement plate 13 and the bottom plate 1. The seamless internal thread copper tube can pass through the square hole and fall on the placement plate 13 below, and the hydraulic rod is controlled by the synchronous controller to move downward with the U-shaped plate 16, and the support rod 35 will rotate and tilt when it contacts the vertical rod 14, and when the U-shaped plate 16 contacts the bottom plate 1, the support rod 35 is in a completely open state, so that the seamless internal thread copper tube can fall into the square hole, and because the placement plate 13 has an arc, the seamless internal thread copper tube can be slowly slid down, thereby protecting the seamless internal thread copper tube again.

[0045] Working principle: First, a part of the seamless internally threaded copper tube is passed through the drawing die 11, and the seamless internally threaded copper tube is clamped and fixed by the stretching device 8. At this time, the electric push rod 29 is started to move the moving block 27, so that the roller 6 squeezes the hose 4. Then, the first motor 15 is started to rotate the threaded rod 19, and the second slider 18 can be moved through the thread effect of the threaded rod 19, so that the stretching device 8 and the first slider 5 can be moved. Since the roller 6 can rotate, the hose 4 will be continuously squeezed when the first slider 5 moves, and the lubricating fluid in the hose 4 will be in a flowing state, so that the lubricating fluid in the cooling chamber 30 will be in a flowing state, so that the new lubricating fluid can be continuously replaced, and the drawing die 11 is cooled to prevent the temperature of the drawing die 11 from being too high during the drawing process, thereby preventing the lubricating effect of the lubricating fluid from being affected, and then preventing the drawing effect of the seamless internally threaded copper tube from being affected;

[0046] Furthermore, the lubricating liquid in the hose 4 flows into the connecting tube 7. Since the diameter of one end of the connecting tube 7 gradually decreases, the flow rate of the lubricating liquid can be increased, and the cavity between the fixing ring 22 and the annular groove 33 can be quickly filled, and the lubricating liquid can penetrate into the annular wiping sponge 32 through the circular hole 34. The outer surface of the seamless internally threaded copper tube is coated with the annular wiping sponge 32. Since the flow rate of the lubricating liquid increases, the lubricating liquid can be continuously provided to avoid the situation of supply interruption, thereby ensuring the lubrication effect. At the same time, the second motor 21 is started to rotate the gear 20, and the gear 20 rotates the outer gear ring 25, so that the rotating ring 23 and the annular wiping sponge 32 can be rotated, so that the lubricating liquid can be evenly coated on the outer surface of the seamless internally threaded copper tube, thereby improving the drawing quality and drawing efficiency.

[0047] Furthermore, after the drawing of the seamless internally threaded copper tube is completed, the clamping of the seamless internally threaded copper tube is released, and the seamless internally threaded copper tube falls on the support rod 35. Due to the presence of the coil spring 39, the seamless internally threaded copper tube can be buffered. At this time, the hydraulic rod is started to move the U-shaped plates 16 on both sides downward, and when the support rod 35 contacts the vertical rod 14, it begins to tilt, and when the U-shaped plate 16 contacts the bottom plate 1, the support rod 35 is in a fully open state. At this time, the seamless internally threaded copper tube passes through the square hole and falls on the placement plate 13, and will contact the arc segment on the placement plate 13 when falling, so that the seamless internally threaded copper tube can roll down, avoiding concave deformation and scratches on the seamless internally threaded copper tube.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A drawing device for processing seamless internally threaded copper tubes, comprising a base plate (1), characterized in that: A fixed plate (10) is fixedly connected to one side of the top of the bottom plate (1), a drawing die (11) is fixedly connected to the fixed plate (10), a lubrication mechanism and a cooling mechanism are provided on the fixed plate (10), both sides of the top of the bottom plate (1) corresponding to the fixed plate (10) are fixedly connected to vertical side plates (2), the two vertical side plates (2) are provided with a drawing mechanism, and a buffer discharge mechanism is provided on the inner side of the top of the bottom plate (1) corresponding to the vertical side plates (2) and the fixed plate (10); The lubrication mechanism comprises a rotating ring (23), an annular groove (33) is formed on the outer wall of the rotating ring (23), a plurality of circular holes (34) are formed on the annular groove (33), an annular wiping sponge (32) is fixedly connected to the inner wall of the rotating ring (23), the annular wiping sponge (32) is in contact with the plurality of circular holes (34), the plurality of circular holes (34) are used for the circulation of lubricating liquid and the penetration into the annular wiping sponge (32), and the annular wiping sponge (32) is used for evenly applying the lubricating liquid to the outer wall of the seamless internally threaded copper tube; The cooling mechanism comprises a cooling chamber (30) provided between the fixed plate (10) and the drawing die (11); the lubricating liquid in the cooling chamber (30) is used to cool the drawing die (11) to prevent the drawing die (11) from being overheated during the drawing process; a liquid outlet pipe (31) is fixedly passed through the fixed plate (10); a hose (4) is fixedly connected to the other end of the liquid outlet pipe (31); the hose (4) is fixedly connected to the vertical side plate (2); the cooling mechanism further comprises a roller (6); the roller (6) rolls and squeezes the lubricating liquid in the hose (4) and keeps the lubricating liquid in the cooling chamber (30) in a flowing state.

2. A drawing device for processing seamless internally threaded copper tubes according to claim 1, characterized in that: The lubrication mechanism further comprises a fixed ring (22) rotatably connected to the inner wall of the annular groove (33), L-shaped plates (24) are fixedly connected to both sides of the outer wall of the fixed ring (22), both L-shaped plates (24) are fixedly connected to the fixed plate (10), a second motor (21) is fixedly connected to one of the L-shaped plates (24), a gear (20) is fixedly connected to the driving end of the second motor (21) via a driving shaft, an outer gear ring (25) is meshingly connected to the outer diameter of the gear (20), and the outer gear ring (25) is fixedly connected to the rotating ring (23).

3. A drawing device for processing seamless internally threaded copper tube according to claim 2, characterized in that: The lubrication mechanism further comprises a connecting pipe (7) fixedly connected to the top end of the vertical side plate (2) on one side, the connecting pipe (7) and the hose (4) are fixedly connected, the connecting pipe (7) and the fixing ring (22) are fixedly connected, the diameter of the connecting pipe (7) gradually decreases in the direction where the connecting pipe (7) approaches the fixing ring (22), so that the flow rate of the lubricating liquid is accelerated, a liquid inlet pipe (9) is fixedly penetrated through the other side of the cooling cavity (30), and a collecting box (17) is fixedly connected to the top end of the bottom plate (1) corresponding to the lower side of the rotating ring (23).

4. A drawing device for processing seamless internally threaded copper tube according to claim 1, characterized in that: The pulling mechanism comprises a slide groove (3) provided at one end of the vertical side plate (2) close to each other, the inner walls of the two slide grooves (3) are respectively slidably connected with a first slider (5) and a second slider (18), and a stretching device (8) is fixedly connected between the first slider (5) and the second slider (18).

5. A drawing device for processing seamless internally threaded copper tube according to claim 4, characterized in that: The cooling mechanism further comprises a movable groove (26) formed at the top end of the first sliding block (5); a movable block (27) is slidably connected to the inner wall of the movable groove (26); the movable block (27) and the roller (6) are rotatably connected via a rotating shaft; one end of the movable groove (26) is connected to a circular groove (28); one end of the circular groove (28) is fixedly connected to an electric push rod (29); and a telescopic end of the electric push rod (29) is fixedly connected to the movable block (27).

6. A drawing device for processing seamless internally threaded copper tube according to claim 4, characterized in that: The pulling mechanism further comprises a first motor (15) fixedly connected to one end of the vertical side plate (2) on one side, a threaded rod (19) fixedly connected to a driving end of the first motor (15), the other end of the threaded rod (19) being rotatably connected to a slide groove (3) on one side, the threaded rod (19) being threadedly connected to a second slider (18), a guide column fixedly connected to an inner wall of the slide groove (3) on the other side, and the guide column being slidably connected to the first slider (5).

7. A drawing device for processing seamless internally threaded copper tube according to claim 1, characterized in that: The buffer discharge mechanism comprises a U-shaped plate (16) and a straight plate (36), four connecting columns (40) are fixedly connected between the U-shaped plate (16) and the straight plate (36), the four connecting columns (40) are arranged in two groups and are symmetrical about the center line of the straight plate (36), and the oblique lower parts of the corresponding connecting columns (40) between the U-shaped plate (16) and the straight plate (36) are fixedly connected to limit rods (38).

8. A drawing device for processing seamless internally threaded copper tube according to claim 7, characterized in that: The outer walls of the four connecting columns (40) are rotatably connected to support rods (35), and fixing grooves (37) are provided at both ends of the four support rods (35) on the outer sides corresponding to the connecting columns (40), and coil springs (39) are fixedly connected between the four groups of fixing grooves (37) and the connecting columns (40).

9. A drawing device for processing seamless internally threaded copper tube according to claim 8, characterized in that: A square hole is formed at the top of the bottom plate (1), and hydraulic rods are fixedly inserted through both sides of the top of the bottom plate (1) corresponding to the square hole. The telescopic ends of the two hydraulic rods are respectively fixedly connected to the two U-shaped plates (16), and the top of the bottom plate (1) corresponding to the support rod (35) is fixedly connected to a vertical rod (14).

10. A drawing device for processing seamless internally threaded copper tube according to claim 9, characterized in that: The buffer discharge mechanism further comprises a placement plate (13) fixedly connected to one side of the bottom end of the bottom plate (1) corresponding to the square hole, the other end of the placement plate (13) being fixedly connected to a plurality of stoppers (12), and a connecting plate being symmetrically fixedly connected between the placement plate (13) and the bottom plate (1).

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