CN118204384A - A stainless steel pipe cold drawing machine - Google Patents

Abstract

The invention belongs to the technical field of cold drawing machines, in particular to a stainless steel tube cold drawing machine, which comprises a base; the top surface of the base is provided with a mounting groove; a chain is arranged in the mounting groove and driven by an external engine; the top surface of the base is fixedly connected with a pair of supporting frames; a drawing die is arranged between the two supporting frames; the top surface of the base is connected with a tractor in a sliding way on one side of the drawing die; a connecting component is arranged between the tractor and the chain; the top surface of the tractor is provided with a clamp seat; the top surface of the clamp seat is connected with a symmetrically arranged clamping plate in a sliding manner, the clamping plate is controlled by a hydraulic system, and the stainless steel pipe is drawn for multiple times through the clamping plate and the tractor, so that the stainless steel pipe with different lengths is subjected to cold drawing, the length of the embodiment of the invention is not required to be lengthened, and the application range of the embodiment of the invention is further improved.

Description

A stainless steel pipe cold drawing machine

Technical Field

The invention belongs to the technical field of cold drawing machines, in particular to a stainless steel pipe cold drawing machine.

Background technique

Cold drawing is a material processing technology. For metal materials, cold drawing refers to drawing the material at room temperature in order to achieve a certain shape and certain mechanical properties. Cold-drawn products have the advantages of high dimensional accuracy and good surface finish compared to hot-formed products.

The prior art also proposes some solutions. For example, a patent application with publication number CN217798132U discloses a stainless steel tube cold drawing machine, including a cold drawing machine body, on which a mounting seat is fixedly installed by bolts, and at the same time, a driving motor is installed inside the mounting seat through machine seat massage, and a mounting box is movably installed on the surface of the mounting seat, and a bidirectional motor is installed inside the mounting box through the machine seat. In the stainless steel tube cold drawing machine, the upper clamping plate and the lower clamping plate are each arranged in two groups. At this time, the switch of the bidirectional motor is started, and the output shaft of the bidirectional motor drives the two groups of screw rods to rotate, so that the lower fixed block and the upper fixed block move toward each other synchronously, and the upper clamping plate and the lower clamping plate move toward each other, so as to clamp the stainless steel tube structure, which can meet the cold drawing needs of more caliber steel tubes.

In the above scheme, the stainless steel pipe to be stretched is clamped by the upper clamp and the lower clamp, and then the hydraulic cylinder drives the clamping assembly to move the stainless steel pipe. However, the stroke of the hydraulic cylinder is limited and some stainless steel pipes with longer lengths cannot be cold drawn.

To this end, the present invention provides a stainless steel pipe cold drawing machine.

Summary of the invention

In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

The technical solution adopted by the present invention to solve its technical problems is: a stainless steel pipe cold drawing machine described in the present invention comprises a base; a mounting groove is provided on the top surface of the base; a chain is installed in the mounting groove, and the chain is driven by an external engine; a pair of support frames are fixedly connected to the top surface of the base; a drawing die is installed between the two support frames; a tractor is slidably connected to the top surface of the base on one side of the drawing die; a connecting assembly is installed between the tractor and the chain; the connecting assembly is used to connect the chain and the tractor; a clamp seat is installed on the top surface of the tractor; a pair of symmetrically arranged clamping plates are slidably connected to the top surface of the clamp seat, and the clamping plates are controlled by a hydraulic system; during operation, when cold drawing a long stainless steel pipe, the user needs to pass the stainless steel pipe through the drawing die between the support frames, and then the tractor moves to the end of the stainless steel pipe passing through the drawing die, and then the hydraulic system is started to drive the two clamping plates to move toward each other. , thereby clamping the end of the stainless steel pipe, and then the external generator drives the chain to rotate, and then the chain drives the tractor to move in the direction away from the drawing die through the connecting assembly, and pulls the stainless steel pipe away from the drawing die. When the tractor moves to the end of the base, the hydraulic system drives the two clamping plates away from each other and stops clamping the stainless steel pipe. Then the chain drives the tractor to move in the direction of the drawing die. When the tractor moves to the end of the drawing die with the clamping plate, the hydraulic system controls the clamping plate to clamp the stainless steel pipe again. Then the chain drives the tractor away from the drawing die again through the connecting assembly, and then completes the re-drawing of the remaining part of the stainless steel pipe. The stainless steel pipe is drawn multiple times by the clamping plate and the tractor to realize segmented cold drawing of the stainless steel pipe, thereby realizing cold drawing of stainless steel pipes of different lengths without increasing the length of the embodiment of the present invention, thereby improving the scope of application of the embodiment of the present invention.

Preferably, a support seat is fixedly connected to one end of the top surface of the base close to the tractor; an electric push rod is fixedly connected to the top surface of the support seat; a rotating roller is rotatably arranged on the top surface of the electric push rod; during operation, before the stainless steel pipe is pulled, the user needs to start the electric push rod to drive the rotating roller to rise, and then when the tractor drives the stainless steel pipe to move to the electric push rod, the stainless steel pipe between the clamping plates can be placed on the top surface of the rotating roller, thereby providing support for the stainless steel pipe, thereby reducing the phenomenon of the stainless steel pipe bending due to its own weight.

Preferably, the top surface of the support seat is fixedly connected to an electric motor on one side of the electric push rod; the end of the rotating roller close to the motor is fixedly connected to a transmission rod; a telescopic rod is arranged between the transmission rod and the motor; the bottom of the telescopic rod is rotatably connected to the support seat, and the telescopic rod is vertically arranged; a pair of bevel gears are installed at both ends of the telescopic rod to connect with the transmission rod and the output shaft of the motor, and the bevel gear at the end of the transmission rod is lower than the bevel gear at the top of the telescopic rod; during operation, when the electric push rod drives the rotating roller to move, the rotating rod at the end of the rotating roller will also drive the telescopic rod to extend and retract through the bevel gear. At this time, the motor can still drive the telescopic rod and the rotating rod to rotate through the bevel gear, and finally drive the rotating roller to rotate, and the rotating rotating roller will drive the stainless steel pipe in contact with it to move in a direction away from the drawing die, thereby moving the cold-drawn stainless steel pipe out of the top surface of the base to facilitate the cold drawing of the next stainless steel pipe.

Preferably, one end of the base close to the electric push rod is rotatably connected to a receiving frame, and the top surface of the receiving frame is inclined; a guide plate is fixedly connected to one side of the receiving frame; during operation, when the rotating roller moves the cold-drawn stainless steel out of the top surface of the base, the stainless steel tube will fall on the top surface of the receiving frame. Since the top surface of the receiving frame is inclined, the stainless steel tube falling on the top surface of the receiving frame will slide along the surface of the receiving frame toward the guide plate, and then the guide plate will guide the stainless steel tube to one side, so as to facilitate the user to collect the processed stainless steel tube.

Preferably, the top surface of the base is slidably connected to a feeding trolley, and the feeding trolley is located on the side of the drawing die away from the tractor; the top surface of the feeding trolley is slidably connected to a pair of symmetrically arranged feeding plates, and the feeding plates are controlled by a hydraulic system; the feeding trolley is also connected to the chain through a connecting assembly; the connecting assembly includes a connecting block and two pairs of baffles; the pairs of baffles are slidably connected to the two ends of the feeding trolley and the tractor respectively, and the baffles are controlled by servo electricity; the connecting block is connected to the top surface of the chain; during operation, when the user needs to perform the feeding operation of the stainless steel pipe, the user needs to first insert one end of the stainless steel pipe between the two feeding plates, and then the feeding plates are driven by the hydraulic system to clamp the stainless steel, and then the tractor and The baffle on the feeding trolley is raised by the drive of the servo motor, so that the connecting block can be moved to the bottom of the feeding trolley under the drive of the chain, and then the baffle of the feeding trolley close to the tractor is lowered. At this time, the chain can squeeze the baffle of the feeding trolley close to the tractor through the connecting block, thereby driving the feeding trolley to move toward the drawing die, thereby pushing the stainless steel pipe toward the drawing die, and completing the feeding operation of the stainless steel pipe. Then the baffle at the feeding trolley is lifted, and the connecting block moves to the bottom of the tractor. At this time, the connecting block can squeeze the baffle at the end of the tractor, thereby driving the tractor to move and completing the cold drawing operation of the stainless steel pipe. Therefore, only one driving source is required to complete the cold drawing and feeding operations of the stainless steel pipe, thereby simplifying the driving system.

Preferably, grooves are provided on the surfaces of the opposite sides of the pair of clamping plates and the loading plate; a threaded rod is threadedly connected to the bottom of the groove; an extrusion plate is rotatably connected to the end of the threaded rod away from the bottom of the groove, and the extrusion plate is made of flexible material; during operation, when clamping stainless steel pipes of different sizes, the user can rotate the threaded rod at the groove to move the threaded rod with the extrusion plate, so that the extrusion plate fits the surface of the stainless steel pipe, thereby expanding the contact area between the extrusion plate and the stainless steel pipe, thereby reducing the pressure on the surface of the stainless steel plate, thereby reducing the probability of deformation of the stainless steel pipe.

Preferably, a pair of support plates are fixedly connected to one end of the loading vehicle and the tractor near the baffle; a limit plate is fixedly connected between the paired support plates; during operation, when the connecting block pushes the baffle to move, the limit plate on the surface of the support plate will abut against the surface of the baffle, thereby providing support for the baffle, preventing the baffle from flipping over when the connecting block pushes the baffle to move, thereby causing damage to the connection between the baffle and the tractor or the baffle and the loading vehicle.

Preferably, an electromagnet block is embedded on the top surface of the clamp seat between the two clamping plates; a support block is arranged on the top surface of the electromagnet block; a guide plate is installed on the bottom of the support block; the guide plate is made of a magnetizable metal material; during operation, after the stainless steel pipe passes through the drawing die, the user needs to put the support block on the top surface of the clamp seat into the stainless steel pipe, at which time the support block can support the stainless steel pipe from the inside to avoid excessive clamping force of the clamping plate on the stainless steel pipe, which causes deformation of the stainless steel pipe. At the same time, after the tractor moves to the electric push rod and needs to move back from the electric push rod to the drawing die, the electromagnet block on the top surface of the clamp seat is started, and the support block is driven to move with the movement of the tractor through the attraction of the electromagnet block to the guide plate, thereby ensuring that the support block can always be between the clamping plates to ensure that the clamping plates will not squeeze and deform the stainless steel pipe.

Preferably, a through groove is provided on one side of the support block; pressure plates are slidably connected to both ends of the through groove; an elastic band is fixedly connected between the pressure plates; an ejection groove is provided on the bottom surface of the support block, and the ejection groove is connected to the through groove; the guide plate is slidably connected to the ejection groove; a spring is fixedly connected between the guide plate and the bottom of the ejection groove; during operation, when the electromagnet block is not started, the spring in the ejection groove will pull the guide plate to the bottom of the through groove, during which the guide plate will squeeze the pressure plate in the through groove, so that the pressure plate is pressed out of the through groove, and the elastic band is stretched at the same time, The pressure plate is pressed against the inner wall of the stainless steel tube to cooperate with the clamping plate to clamp the stainless steel tube to prevent the stainless steel tube from being squeezed and deformed by the clamping plate. When the electromagnet block is started, the electromagnet block will attract the guide plate, and the guide plate will move toward the notch away from the ejection groove and no longer squeeze the pressure plate. The elastic band in the stretched state recovers and pulls the pressure plate toward the through groove, so that the pressure plate no longer squeezes the inner wall of the stainless steel tube, thereby allowing the support block to move more smoothly inside the stainless steel tube and avoiding friction between the pressure plate and the stainless steel tube, which causes wear of the pressure plate.

Preferably, the bottom surface of the support block is slidably connected to a pair of support columns on both sides of the guide plate; the bottom surface of the support column is rotatably provided with a roller; a partition is fixedly connected between the support columns; during operation, when the electromagnet block is started, the guide plate will be sucked toward the electromagnet block, but will be blocked by the partition, so that the guide plate will not be directly squeezed to the inner wall of the stainless steel pipe. At this time, the tractor moves with the electromagnet block, and the guide plate will move together with the support block, the support column and the roller under the attraction of the electromagnet block. At this time, the rolling of the roller can reduce the friction force on the support block when it moves, so that the support block moves more smoothly.

The beneficial effects of the present invention are as follows:

1. The stainless steel tube cold drawing machine described in the present invention realizes segmented cold drawing of the stainless steel tube by repeatedly drawing the stainless steel tube through a clamping plate and a tractor, thereby realizing cold drawing of stainless steel tubes of different lengths without increasing the length of the embodiment of the present invention, thereby improving the scope of application of the embodiment of the present invention.

2. The stainless steel tube cold drawing machine described in the present invention drives the stainless steel tube in contact with the rotating roller to move in a direction away from the drawing die, thereby moving the cold-drawn stainless steel tube out of the top surface of the base to facilitate the cold drawing of the next stainless steel tube.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a perspective view of the present invention;

FIG2 is a schematic structural diagram of a rotating roller in the present invention;

FIG3 is a schematic structural diagram of a drawing die in the present invention;

FIG4 is a schematic diagram of the structure of the electromagnet block in the present invention;

FIG5 is a schematic structural diagram of a tractor in the present invention;

FIG6 is a cross-sectional view of a support block in the present invention;

In the figure: 1. base; 2. mounting groove; 3. chain; 4. support frame; 5. drawing die; 6. tractor; 7. fixture seat; 8. clamping plate; 9. support seat; 10. electric push rod; 11. rotating roller; 12. motor; 13. transmission rod; 14. telescopic rod; 15. bevel gear; 16. receiving frame; 17. guide plate; 18. feeding car; 19. feeding plate; 20. connecting block; 21. baffle plate; 22. groove; 23. threaded rod; 24. extrusion plate; 25. support plate; 26. limit plate; 27. electromagnet block; 28. support block; 29. guide plate; 30. through groove; 31. pressure plate; 32. elastic belt; 33. ejection groove; 34. spring; 35. support column; 36. roller; 37. partition.

Detailed ways

In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

As shown in Figures 1, 3 and 4, a stainless steel pipe cold drawing machine according to an embodiment of the present invention comprises a base 1; a mounting groove 2 is provided on the top surface of the base 1; a chain 3 is installed in the mounting groove 2, and the chain 3 is driven by an external engine; a pair of support frames 4 are fixedly connected to the top surface of the base 1; a drawing die 5 is installed between the two support frames 4; a tractor 6 is slidably connected to the top surface of the base 1 on one side of the drawing die 5; a connecting assembly is installed between the tractor 6 and the chain 3; the connecting assembly is used to connect the chain 3 and the tractor 6; a clamp seat 7 is installed on the top surface of the tractor 6; a pair of symmetrically arranged clamping plates 8 are slidably connected to the top surface of the clamp seat 7, and the clamping plates 8 are controlled by a hydraulic system; during operation, when cold drawing a long stainless steel pipe, the user needs to pass the stainless steel pipe through the drawing die 5 between the support frames 4, and then the tractor 6 moves to the end of the stainless steel pipe passing through the drawing die 5, and then the hydraulic system is started to drive the two clamping plates 8 to move toward each other The chain 3 is driven by the external generator to rotate, and then the chain 3 drives the tractor 6 to move in the direction away from the drawing die 5 through the connecting assembly, and the stainless steel pipe is pulled away from the drawing die 5. When the tractor 6 moves to the end of the base 1, the hydraulic system drives the two clamping plates 8 to move away from each other and stops clamping the stainless steel pipe. Then the chain 3 drives the tractor 6 to move in the direction of the drawing die 5. When the tractor 6 moves to the end of the drawing die 5 with the clamping plate 8, the hydraulic system controls the clamping plate 8 to clamp the stainless steel pipe again. Then the chain 3 drives the tractor 6 away from the drawing die 5 again through the connecting assembly, and then the remaining part of the stainless steel pipe is drawn again. The stainless steel pipe is drawn multiple times by the clamping plate 8 and the tractor 6 to realize segmented cold drawing of the stainless steel pipe, thereby realizing cold drawing of stainless steel pipes of different lengths without increasing the length of the embodiment of the present invention, thereby improving the scope of application of the embodiment of the present invention.

As shown in Figures 1 and 2, a support seat 9 is fixedly connected to one end of the top surface of the base 1 close to the tractor 6; an electric push rod 10 is fixedly connected to the top surface of the support seat 9; a rotating roller 11 is rotatably arranged on the top surface of the electric push rod 10; during operation, before the stainless steel pipe is pulled, the user needs to start the electric push rod 10 to drive the rotating roller 11 to rise, and then when the tractor 6 drives the stainless steel pipe to move to the electric push rod 10, the stainless steel pipe between the clamping plates 8 can be placed on the top surface of the rotating roller 11, thereby providing support for the stainless steel pipe, thereby reducing the phenomenon of the stainless steel pipe bending due to its own weight.

As shown in FIG2 , the top surface of the support seat 9 is fixedly connected to a motor 12 on one side of the electric push rod 10; the end of the rotating roller 11 close to the motor 12 is fixedly connected to a transmission rod 13; a telescopic rod 14 is arranged between the transmission rod 13 and the motor 12; the bottom of the telescopic rod 14 is rotatably connected to the support seat 9, and the telescopic rod 14 is arranged vertically; a pair of bevel gears 15 are installed between the two ends of the telescopic rod 14 and the output shaft of the transmission rod 13 and the motor 12, and the bevel gear 15 at the end of the transmission rod 13 is lower than the telescopic rod 14. The bevel gear 15 at the top; when working, when the electric push rod 10 drives the rotating roller 11 to move, the rotating rod at the end of the rotating roller 11 will also drive the telescopic rod 14 to extend and retract through the bevel gear 15. At this time, the motor 12 can still drive the telescopic rod 14 and the rotating rod to rotate through the bevel gear 15, and then finally drive the rotating roller 11 to rotate. The rotating rotating roller 11 will drive the stainless steel pipe in contact with it to move in the direction away from the drawing die 5, so as to move the stainless steel pipe that has completed the cold drawing out of the top surface of the base 1, so as to facilitate the cold drawing of the next stainless steel pipe.

As shown in Figure 1, one end of the base 1 close to the electric push rod 10 is rotatably connected to a receiving frame 16, and the top surface of the receiving frame 16 is inclined; one side of the receiving frame 16 is fixedly connected to a guide plate 17; during operation, when the rotating roller 11 moves the cold-drawn stainless steel out of the top surface of the base 1, the stainless steel pipe will fall on the top surface of the receiving frame 16. Since the top surface of the receiving frame 16 is inclined, the stainless steel pipe falling on the top surface of the receiving frame 16 will slide along the surface of the receiving frame 16 toward the guide plate 17, and then the guide plate 17 will guide the stainless steel pipe to one side to facilitate the user to collect the processed stainless steel pipe.

As shown in Figures 1, 3, 4 and 5, a feeding trolley 18 is slidably connected to the top surface of the base 1, and the feeding trolley 18 is located on the side of the drawing die 5 away from the tractor 6; a pair of symmetrically arranged feeding plates 19 are slidably connected to the top surface of the feeding trolley 18, and the feeding plates 19 are controlled by a hydraulic system; the feeding trolley 18 is also connected to the chain 3 through a connecting assembly; the connecting assembly includes a connecting block 20 and two pairs of baffles 21; the pairs of baffles 21 are slidably connected to the two ends of the feeding trolley 18 and the tractor 6, respectively, and the baffles 21 are controlled by servo electricity; the connecting block 20 is connected to the top surface of the chain 3; during operation, when the user needs to perform the feeding operation of the stainless steel pipe, the user needs to first insert one end of the stainless steel pipe between the two feeding plates 19, and then the feeding plates 19 are driven by the hydraulic system to clamp the stainless steel, and then pull The baffles 21 on the car 6 and the feeding car 18 are raised under the drive of the servo motor, so that the connecting block 20 can be moved to the bottom of the feeding car 18 under the drive of the chain 3, and then the baffle 21 of the feeding car 18 close to the end of the tractor 6 is lowered. At this time, the chain 3 can squeeze the baffle 21 of the feeding car 18 close to the end of the tractor 6 through the connecting block 20, thereby driving the feeding car 18 to move toward the drawing die 5, thereby pushing the stainless steel pipe toward the drawing die 5, and completing the feeding operation of the stainless steel pipe. Then the baffle 21 at the feeding car 18 is lifted, and the connecting block 20 moves to the bottom of the tractor 6. At this time, the connecting block 20 can squeeze the baffle 21 at the end of the tractor 6, thereby driving the tractor 6 to move and complete the cold drawing operation of the stainless steel pipe. Therefore, only one driving source is required to complete the cold drawing and feeding operations of the stainless steel pipe, thereby simplifying the driving system.

As shown in Figures 3 to 5, the surfaces of the opposite sides of the clamping plate 8 and the loading plate 19 in a pair are both provided with grooves 22; the bottom of the groove 22 is threadedly connected with a threaded rod 23; the end of the threaded rod 23 away from the bottom of the groove 22 is rotatably connected with an extrusion plate 24, and the extrusion plate 24 is made of flexible material; during operation, when clamping stainless steel pipes of different sizes, the user can rotate the threaded rod 23 at the groove 22 to move the threaded rod 23 with the extrusion plate 24, so that the extrusion plate 24 fits the surface of the stainless steel pipe, thereby expanding the contact area between the extrusion plate 24 and the stainless steel pipe, thereby reducing the pressure on the surface of the stainless steel plate, thereby reducing the probability of deformation of the stainless steel pipe.

As shown in Figures 3 to 5, a pair of support plates 25 are fixedly connected to one end of the loading cart 18 and the tractor 6 near the baffle 21; a limit plate 26 is fixedly connected between the pair of support plates 25; during operation, when the connecting block 20 pushes the baffle 21 to move, the limit plate 26 on the surface of the support plate 25 will abut against the surface of the baffle 21, thereby providing support for the baffle 21 to prevent the baffle 21 from flipping over when the connecting block 20 pushes the baffle 21 to move, thereby causing damage to the connection between the baffle 21 and the tractor 6 or the baffle 21 and the loading cart 18.

As shown in Figures 3 to 6, an electromagnet block 27 is embedded on the top surface of the clamp seat 7 between the two clamping plates 8; a support block 28 is provided on the top surface of the electromagnet block 27; a guide plate 29 is installed at the bottom of the support block 28; the guide plate 29 is made of a magnetizable metal material; during operation, after the stainless steel pipe passes through the drawing die 5, the user needs to put the support block 28 on the top surface of the clamp seat 7 into the stainless steel pipe, at which time the support block 28 can support the stainless steel pipe from the inside to avoid excessive clamping force of the clamping plate 8 on the stainless steel pipe, which causes the stainless steel pipe to deform. At the same time, when the tractor 6 moves to the electric push rod 10 and needs to move from the electric push rod 10 to the drawing die 5, the electromagnet block 27 on the top surface of the clamp seat 7 is started, and the attraction of the electromagnet block 27 to the guide plate 29 drives the support block 28 to move with the movement of the tractor 6, thereby ensuring that the support block 28 can always be between the clamping plates 8 to ensure that the clamping plates 8 will not squeeze and deform the stainless steel pipe.

As shown in FIG6 , a through groove 30 is provided on one side of the support block 28; a pressure plate 31 is slidably connected to both ends of the through groove 30; an elastic band 32 is fixedly connected between the pressure plates 31; an ejection groove 33 is provided on the bottom surface of the support block 28, and the ejection groove 33 is connected to the through groove 30; the guide plate 29 is slidably connected to the ejection groove 33; a spring 34 is fixedly connected between the guide plate 29 and the bottom of the ejection groove 33; during operation, when the electromagnet block 27 is not started, the spring 34 in the ejection groove 33 will pull the guide plate 29 to the bottom of the through groove 30, during which the guide plate 29 will squeeze the pressure plate 31 in the through groove 30, so that the pressure plate 31 is pressed out of the through groove 3 0, stretch the elastic band 32 at the same time, and let the pressure plate 31 press on the inner wall of the stainless steel tube, so as to cooperate with the clamping plate 8 to clamp the stainless steel tube to prevent the stainless steel tube from being squeezed and deformed by the clamping plate 8, and when the electromagnet block 27 is started, the electromagnet block 27 will attract the guide plate 29, and the guide plate 29 will move toward the notch away from the ejection groove 33 and no longer squeeze the pressure plate 31, and the elastic band 32 in the stretched state recovers and pulls the pressure plate 31 toward the through groove 30, so that the pressure plate 31 no longer squeezes the inner wall of the stainless steel tube, thereby enabling the support block 28 to move more smoothly inside the stainless steel tube, and avoiding friction between the pressure plate 31 and the stainless steel tube, which causes wear of the pressure plate 31.

As shown in Figures 5 and 6, the bottom surface of the support block 28 is slidably connected to a pair of support columns 35 on both sides of the guide plate 29; the bottom surface of the support column 35 is rotatably provided with a roller 36; a partition 37 is fixedly connected between the support columns 35; during operation, when the electromagnet block 27 is started, the guide plate 29 will be sucked toward the electromagnet block 27, but will be blocked by the partition 37, so that the guide plate 29 will not be directly squeezed to the inner wall of the stainless steel pipe. At this time, the tractor 6 moves with the electromagnet block 27, and the guide plate 29 will move together with the support block 28, the support column 35 and the roller 36 under the attraction of the electromagnet block 27. At this time, the rolling of the roller 36 can reduce the friction force on the support block 28 when it moves, so that the support block 28 moves more smoothly.

During operation, when cold drawing a long stainless steel pipe, the user needs to pass the stainless steel pipe through the drawing die 5 between the support frames 4, and then the tractor 6 moves to the end of the stainless steel pipe passing through the drawing die 5, and then the hydraulic system is started to drive the two clamping plates 8 to move toward each other, thereby clamping the end of the stainless steel pipe, and then the external generator drives the chain 3 to rotate, and then the chain 3 drives the tractor 6 to move away from the drawing die 5 through the connecting assembly, and pulls the stainless steel pipe away from the drawing die 5. When the tractor 6 moves to the end of the base 1, the hydraulic system drives the two clamping plates 8 to move away from each other, and stops clamping the stainless steel pipe. , and then the chain 3 drives the tractor 6 to move in the direction of the drawing die 5. When the tractor 6 moves to the end of the drawing die 5 with the clamping plate 8, the hydraulic system controls the clamping plate 8 to clamp the stainless steel pipe again. Then the chain 3 drives the tractor 6 away from the drawing die 5 through the connecting assembly again, and then the remaining part of the stainless steel pipe is drawn again. The stainless steel pipe is drawn multiple times by the clamping plate 8 and the tractor 6 to realize segmented cold drawing of the stainless steel pipe, thereby realizing cold drawing of stainless steel pipes of different lengths without increasing the length of the embodiment of the present invention, thereby improving the scope of application of the embodiment of the present invention.

Before pulling the stainless steel pipe, the user needs to start the electric push rod 10 to drive the rotating roller 11 to rise. Then, when the tractor 6 drives the stainless steel pipe to move to the electric push rod 10, the stainless steel pipe between the clamping plates 8 can be placed on the top surface of the rotating roller 11, thereby providing support for the stainless steel pipe, thereby reducing the bending of the stainless steel pipe due to its own weight.

When the electric push rod 10 drives the rotating roller 11 to move, the rotating rod at the end of the rotating roller 11 will also drive the telescopic rod 14 to extend and retract through the bevel gear 15. At this time, the motor 12 can still drive the telescopic rod 14 and the rotating rod to rotate through the bevel gear 15, and finally drive the rotating roller 11 to rotate. The rotating rotating roller 11 will drive the stainless steel pipe in contact with it to move in the direction away from the drawing die 5, so as to move the stainless steel pipe that has completed cold drawing out of the top surface of the base 1, so as to facilitate the cold drawing of the next stainless steel pipe.

When the rotating roller 11 moves the cold-drawn stainless steel out of the top surface of the base 1, the stainless steel pipe will fall on the top surface of the receiving frame 16. Since the top surface of the receiving frame 16 is inclined, the stainless steel pipe falling on the top surface of the receiving frame 16 will slide along the surface of the receiving frame 16 toward the guide plate 17, and then the guide plate 17 will guide the stainless steel pipe to one side to facilitate the user to collect the processed stainless steel pipe.

When the user needs to load the stainless steel pipe, the user needs to first insert one end of the stainless steel pipe between the two loading plates 19, and then the loading plate 19 clamps the stainless steel under the drive of the hydraulic system, and then the baffles 21 on the tractor 6 and the loading trolley 18 are raised under the drive of the servo motor, so that the connecting block 20 can be driven by the chain 3 and moved to the bottom of the loading trolley 18, and then the baffle 21 of the loading trolley 18 close to the tractor 6 is lowered, and at this time the chain 3 can squeeze the loading trolley 18 through the connecting block 20. The baffle 21 near one end of the tractor 6 drives the loading trolley 18 to move toward the drawing die 5, thereby pushing the stainless steel tube toward the drawing die 5, and completing the loading operation of the stainless steel tube. Subsequently, the baffle 21 at the loading trolley 18 is lifted, and the connecting block 20 moves to the bottom of the tractor 6. At this time, the connecting block 20 can squeeze the baffle 21 at the end of the tractor 6, thereby driving the tractor 6 to move and completing the cold drawing operation of the stainless steel tube. Therefore, only one driving source is required to complete the cold drawing and loading operations of the stainless steel tube, thereby simplifying the driving system.

When clamping stainless steel pipes of different sizes, the user can rotate the threaded rod 23 at the groove 22 to move the threaded rod 23 with the extrusion plate 24, so that the extrusion plate 24 fits the surface of the stainless steel pipe, thereby expanding the contact area between the extrusion plate 24 and the stainless steel pipe, thereby reducing the pressure on the surface of the stainless steel plate, thereby reducing the probability of deformation of the stainless steel pipe.

When the connecting block 20 pushes the baffle 21 to move, the limit plate 26 on the surface of the support plate 25 will abut against the surface of the baffle 21, thereby providing support for the baffle 21 and preventing the baffle 21 from flipping over when the connecting block 20 pushes the baffle 21 to move, thereby causing damage to the connection between the baffle 21 and the tractor 6 or the baffle 21 and the loading vehicle 18.

After the stainless steel pipe passes through the drawing die 5, the user needs to put the support block 28 on the top surface of the clamp seat 7 into the stainless steel pipe. At this time, the support block 28 can support the stainless steel pipe from the inside to avoid the clamping force of the clamping plate 8 on the stainless steel pipe being too large, which may cause the stainless steel pipe to deform. At the same time, after the tractor 6 moves to the electric push rod 10, it needs to move from the electric push rod 10 to the drawing die 5 again. The electromagnet block 27 on the top surface of the clamp seat 7 is started, and the support block 28 is driven to move with the movement of the tractor 6 through the attraction of the electromagnet block 27 to the guide plate 29, thereby ensuring that the support block 28 can always be between the clamping plates 8 to ensure that the clamping plates 8 will not squeeze and deform the stainless steel pipe.

When the electromagnet block 27 is not started, the spring 34 in the ejection groove 33 will pull the guide plate 29 to the bottom of the through groove 30. During this period, the guide plate 29 will squeeze the pressure plate 31 in the through groove 30, so that the pressure plate 31 is pressed out of the through groove 30, and the elastic band 32 is stretched at the same time, and the pressure plate 31 is pressed on the inner wall of the stainless steel pipe to cooperate with the clamping plate 8 to clamp the stainless steel pipe to prevent the stainless steel pipe from being squeezed and deformed by the clamping plate 8. When the electromagnet block 27 is started, the electromagnet block 27 will attract the guide plate 29, and the guide plate 29 will move toward the notch away from the ejection groove 33 and no longer squeeze the pressure plate 31. The elastic band 32 in the stretched state recovers and pulls the pressure plate 31 to the through groove 30, so that the pressure plate 31 no longer squeezes the inner wall of the stainless steel pipe, thereby allowing the support block 28 to move more smoothly inside the stainless steel pipe, and avoiding friction between the pressure plate 31 and the stainless steel pipe, which causes wear of the pressure plate 31.

When the electromagnet block 27 is started, the guide plate 29 will be sucked toward the electromagnet block 27, but will be blocked by the partition 37, so that the guide plate 29 will not be directly squeezed to the inner wall of the stainless steel tube. At this time, the tractor 6 moves with the electromagnet block 27, and the guide plate 29 will move with the support block 28, the support column 35 and the roller 36 under the attraction of the electromagnet block 27. At this time, the rolling of the roller 36 can reduce the friction force on the support block 28 when it moves, so that the support block 28 moves more smoothly.

The basic principles, main features and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims (10)

1. A stainless steel tube cold drawing machine, which is characterized in that: comprises a base (1); the top surface of the base (1) is provided with a mounting groove (2); a chain (3) is arranged in the mounting groove (2), and the chain (3) is driven by an external engine; the top surface of the base (1) is fixedly connected with a pair of supporting frames (4); a drawing die (5) is arranged between the two supporting frames (4); the top surface of the base (1) is connected with a tractor (6) on one side of the drawing die (5) in a sliding manner; a connecting component is arranged between the tractor (6) and the chain (3); the connecting component is used for connecting the chain (3) and the tractor (6); the top surface of the tractor (6) is provided with a clamp seat (7); the top surface of the clamp seat (7) is connected with a pair of symmetrically arranged clamping plates (8) in a sliding manner, and the clamping plates (8) are controlled by a hydraulic system.

2. A stainless steel tube cold drawing machine according to claim 1, wherein: one end of the top surface of the base (1) close to the tractor (6) is fixedly connected with a supporting seat (9); the top surface of the supporting seat (9) is fixedly connected with an electric push rod (10); the top surface of the electric push rod (10) is rotated with a rotating roller (11).

3. A stainless steel tube cold drawing machine according to claim 2, wherein: the top surface of the supporting seat (9) is fixedly connected with a motor (12) at one side of the electric push rod (10); one end of the rotating roller (11) close to the motor (12) is fixedly connected with a transmission rod (13); a telescopic rod (14) is arranged between the transmission rod (13) and the motor (12); the bottom of the telescopic rod (14) is rotationally connected with the supporting seat (9), and the telescopic rod (14) is vertically arranged; a pair of bevel gears (15) are arranged between the two ends of the telescopic rod (14) and the output shafts of the transmission rod (13) and the motor (12), and the bevel gears (15) at the end part of the transmission rod (13) are lower than the bevel gears (15) at the top end of the telescopic rod (14).

4. A stainless steel tube cold drawing machine according to claim 3, wherein: one end of the base (1) close to the electric push rod (10) is rotatably connected with a bearing frame (16); one side of the bearing frame (16) is fixedly connected with a guide plate (17).

5. A stainless steel tube cold drawing machine according to claim 1, wherein: the top surface of the base (1) is connected with a feeding car (18) in a sliding manner, and the feeding car (18) is positioned at one side of the drawing die (5) far away from the tractor (6); the top surface of the feeding vehicle (18) is connected with a symmetrically arranged feeding plate (19) in a sliding manner, and the feeding plate (19) is controlled by a hydraulic system; the feeding vehicle (18) is also connected with the chain (3) through a connecting component; the connecting assembly comprises a connecting block (20) and two pairs of baffles (21); the pair of baffles (21) are respectively connected with the two ends of the loading trolley (18) and the tractor (6) in a sliding way, and the baffles (21) are controlled by servo electricity; the connecting block (20) is connected with the top surface of the chain (3).

6. A stainless steel tube cold drawing machine according to claim 5, wherein: grooves (22) are formed in the surfaces of one side, opposite to the clamping plates (8) and the feeding plates (19), of the clamping plates; the bottom of the groove (22) is connected with a threaded rod (23) in a threaded manner; one end of the threaded rod (23) far away from the bottom of the groove (22) is rotatably connected with a squeeze plate (24), and the squeeze plate (24) is made of flexible materials.

7. A stainless steel tube cold drawing machine according to claim 5, wherein: a pair of support plates (25) are fixedly connected to one end, close to the baffle plate (21), of the feeding vehicle (18) and the tractor (6); limiting plates (26) are fixedly connected between the pair of supporting plates (25).

8. A stainless steel tube cold drawing machine according to claim 7, wherein: an electromagnet block (27) is embedded between the two clamping plates (8) on the top surface of the clamp seat (7); the top surface of the electromagnet block (27) is provided with a supporting block (28); a guide plate (29) is arranged at the bottom of the supporting block (28); the guide plate (29) is made of a magnetizable metallic material.

9. A stainless steel tube cold drawing machine according to claim 8, wherein: a through groove (30) is formed in one side of the supporting block (28); two ends of the through groove (30) are connected with pressing plates (31) in a sliding manner; an elastic belt (32) is fixedly connected between the pressing plates (31); an ejection groove (33) is formed in the bottom surface of the supporting block (28), and the ejection groove (33) is communicated with the through groove (30); the guide plate (29) is in sliding connection with the ejection groove (33); a spring (34) is fixedly connected between the guide plate (29) and the bottom of the ejection groove (33).

10. A stainless steel tube cold drawing machine according to claim 9, wherein: a pair of support columns (35) are slidably connected to the bottom surface of the support block (28) on both sides of the guide plate (29); the bottom surface of the supporting column (35) is rotated with a roller (36); and a partition plate (37) is fixedly connected between the support columns (35).