Three-wire cold drawing machine for simultaneously processing a plurality of steel pipes

Abstract

The present application relates to the field of steel pipe processing, in particular to a three-wire cold-drawing machine for simultaneously processing multiple steel pipes, comprising a base and a cold-drawing device; the cold-drawing machine further comprises a cutting device and a waste discharge device; the cutting device is arranged at the input port of the cold-drawing device, and the cutting device cuts off the steel pipe at the input port of the cold-drawing device after the cold-drawing device completes cold-drawing; the waste discharge device is arranged inside the cold-drawing device, and the waste discharge device guides and discharges the waste separated by the cutting device inside the cold-drawing device. The present application subsequently discharges and collects the deformed steel pipe inside the cold-drawing device through the waste discharge device, so that the steel pipe unloaded from the cold-drawing machine does not need secondary processing, thereby improving work efficiency.

Description

Technical Field

[0001] This invention relates to the field of steel pipe processing, specifically to a three-line cold drawing machine that can process multiple steel pipes simultaneously. Background Technology

[0002] Cold drawing of steel pipes is a relatively mature processing technology. However, most existing cold drawing machines for steel pipes are single-line processing machines, meaning they can only cold draw one steel pipe at a time, resulting in low working efficiency and failing to meet the needs of modern production.

[0003] Chinese patent CN106180227B discloses a three-wire cold drawing machine, including a frame, a trolley track, a cold drawing trolley mounted on the track, and a trolley travel power device connected to drive the trolley; a die holder located upstream of the trolley track, on which an outer die corresponding to the jaws of the cold drawing trolley is mounted; a mandrel bed located upstream of the die holder's feed, on which a mandrel is mounted, and upstream of the mandrel bed is a mandrel pushing device; the mandrel pushing device, the die holder, and the cold drawing trolley are also included. The three components are located on the same straight line. The core rod bed is height-adjustable. The receiving trough is located above the trolley track. The upstream end of the receiving trough is equipped with a feeding trolley that intermittently feeds the blank steel pipes in the receiving trough. The receiving trough and the raised core rod bed are on the same straight line. The receiving trough has three parallel V-shaped grooves, and the corresponding core rod bed has three core rods. The drawing die seat and the cold drawing trolley are also arranged corresponding to the three core rods. The feeding device is used to feed the blank steel pipes into the receiving trough. The receiving device is used to automatically receive the processed finished pipes.

[0004] While the above-mentioned method can cold-draw multiple steel pipes, most of these pipes are quite long and lack support during cold drawing, which can easily lead to bending. Furthermore, during cold drawing, the cold drawing carriage clamps one end of the pipe, causing deformation at that end. In existing technology, the cold drawing carriage discharges the pipe after drawing, but the deformed end requires secondary cutting, necessitating additional loading and unloading, increasing workload and reducing efficiency. Summary of the Invention

[0005] To address the aforementioned issues, a three-line cold drawing machine is provided that can process multiple steel pipes simultaneously. In a traditional cold drawing machine, one end of the steel pipe is clamped during the cold drawing process, causing deformation. This deformed section within the cold drawing machine requires secondary cutting, necessitating two loading and unloading operations, thus impacting work efficiency. However, by incorporating a cutting device and a waste discharge device, the cutting device severs the steel pipe at the input port of the cold drawing machine after the cold drawing process is complete, separating the deformed pipe from the formed, intact pipe. The waste discharge device then collects and discharges the deformed pipe from the cold drawing machine. This eliminates the need for secondary processing of the steel pipes removed from the cold drawing machine, improving work efficiency. Furthermore, a support device provides support for the processed steel pipes, preventing bending due to excessive length.

[0006] To address the problems of existing technologies, the present invention provides a three-wire cold drawing machine for simultaneously processing multiple steel pipes, including a base and a cold drawing device; the cold drawing machine also includes a cutting device and a waste discharge device; the cutting device is located at the input port of the cold drawing device, and cuts the steel pipe at the input port of the cold drawing device after the cold drawing device completes the cold drawing; the waste discharge device is located inside the cold drawing device, and guides the waste material that has been cut apart by the cutting device inside the cold drawing device to be discharged.

[0007] Preferably, the waste discharge device includes a material picking device and a collection device; the material picking device is arranged inside the cold drawing device along the length of the base, with the picking end of the material picking device facing the input end of the cold drawing device; the collection device is arranged below the material picking device and is located inside the cold drawing device, and the material picking device guides the cut steel pipe waste inside the cold drawing device to the collection device for collection.

[0008] Preferably, the material handling device includes a second linear actuator and an electromagnet; the second linear actuator is disposed inside the cold drawing device along the length of the base, and the output end of the second linear actuator points to the input end of the cold drawing device; the electromagnet is fixedly disposed on the output end of the second linear actuator, and the electromagnet has an adsorption force on the steel pipe scrap located inside the cold drawing device after being energized.

[0009] Preferably, the collection device includes a discharge trough, an inclined plate, and a collection box; the discharge trough is opened inside the cold drawing device along the width direction of the base and extends out from the side wall of the cold drawing device; the inclined plate is inclinedly arranged on the discharge trough along the width direction of the base; the collection box is arranged below the opening of the discharge trough on the side wall of the cold drawing device, and the collection box collects steel pipe waste.

[0010] Preferably, the cold drawing machine also includes a dust collection device, which is located on one side of the cutting device. When the cutting device cuts the steel pipe, the dust collection device sucks away the cut-off debris.

[0011] Preferably, the cutting device includes a cutting machine and a lifting device; the lifting device is located above the input end of the cold drawing device; the cutting machine is located below the lifting device, the lifting device drives the cutting machine to move along the height direction of the base, and the lifting device drives the cutting machine to descend to cut the steel pipe.

[0012] Preferably, the cold drawing machine further includes a support device, which is mounted on a base and provides support for the steel pipe after it has been cold-drawn by the cold drawing device.

[0013] Preferably, the support device includes a support plate and a rotary driver; the support plate is horizontally disposed on one side of the base, and the support plate has a first state and a second state. In the first state, the length direction of the support plate is parallel to the length direction of the base, and in the second state, the length direction of the support plate is parallel to the width direction of the base. At this time, the support plate supports the steel pipe; the rotary driver is vertically disposed at the lower part of the support plate, and the rotary driver drives the support plate to switch between the first state and the second state.

[0014] Preferably, the support device further includes a positioning device, which is located on one side of the rotary driver. The cold drawing device is equipped with a controller. The positioning device identifies the passing cold drawing device and controls the rotary driver to start after the cold drawing device is identified.

[0015] Preferably, the support device further includes an extension device, which is disposed on the support plate along the length direction of the support plate. The extension device is used to guide the processed steel pipe to be unloaded along the width direction of the base.

[0016] The advantages of this invention compared to the prior art are:

[0017] This invention addresses the issue of cold-drawing devices. When a cold-drawing device clamps one end of a steel pipe, causing deformation, the deformed section requires secondary cutting and loading / unloading, impacting efficiency. However, with the cutting and waste discharge devices, the cutting device severs the pipe at the input port after cold drawing, separating the deformed section from the formed pipe. The waste discharge device then collects and discharges the deformed section, eliminating the need for secondary processing and improving efficiency. Furthermore, a support device provides support for the processed pipe, preventing bending due to excessive length. Attached Figure Description

[0018] Figure 1A three-dimensional diagram of a three-wire cold drawing machine that processes multiple steel pipes simultaneously. Figure 1 .

[0019] Figure 2 It is a three-wire cold drawing machine that processes multiple steel pipes simultaneously. Figure 1 A magnified view of a portion of point A in the middle.

[0020] Figure 3 A three-dimensional diagram of a three-wire cold drawing machine that processes multiple steel pipes simultaneously. Figure 2 .

[0021] Figure 4 This is a three-dimensional schematic diagram of a three-line cold drawing machine that processes multiple steel pipes simultaneously, with a feeding point.

[0022] Figure 5 This is a three-dimensional schematic diagram of a three-line cold drawing machine that processes multiple steel pipes simultaneously, after the base has been removed.

[0023] Figure 6 A three-wire cold drawing machine that processes multiple steel pipes simultaneously; a cross-sectional perspective view of the cold drawing device equipped with a waste discharge device and a cutting device. Figure 1 .

[0024] Figure 7 It is a three-wire cold drawing machine that processes multiple steel pipes simultaneously. Figure 6 A magnified view of a portion of point B in the middle.

[0025] Figure 8 It is a three-wire cold drawing machine that processes multiple steel pipes simultaneously. Figure 6 A magnified view of a portion of point C.

[0026] Figure 9 It is a three-wire cold drawing machine that processes multiple steel pipes simultaneously. Figure 6 A magnified view of a portion of point D.

[0027] Figure 10 A three-wire cold drawing machine that processes multiple steel pipes simultaneously; a cross-sectional perspective view of the cold drawing device equipped with a waste discharge device and a cutting device. Figure 2 .

[0028] The numbers on the map are:

[0029] 1. Base; 2. Cold drawing device; 21. Cold drawing seat; 22. Insertion slot; 23. Clamping block; 24. Pulling mold seat; 25. Limiting device; 251. Limiting plate; 252. First linear actuator; 3. Cutting device; 31. Cutting machine; 32. Lifting device; 321. Mounting bracket; 322. Third linear actuator; 323. Lifting plate; 4. Waste discharge device; 41. Material picking device; 411. Second linear actuator; 412. Electromagnet; 42. Collection device; 421. Discharge 422. Slotted plate; 423. Collection box; 424. Vibrator; 5. Dust collection device; 51. Dust collector; 6. Support device; 61. Support plate; 62. Rotary driver; 63. Push-out device; 631. Fourth linear driver; 632. Push-out plate; 64. Positioning device; 641. Photoelectric sensor; 642. First reflector; 643. Second reflector; 65. Extension device; 651. Fifth linear driver; 652. Extension plate; 7. Steel pipe; 8. Unloading point. Detailed Implementation

[0030] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figures 1-4 and Figure 7 A three-wire cold drawing machine for processing multiple steel pipes simultaneously includes a base 1 and a cold drawing device 2; the cold drawing machine also includes a cutting device 3 and a waste discharge device 4; the cutting device 3 is located at the input port of the cold drawing device 2, and the cutting device 3 cuts the steel pipe 7 at the input port of the cold drawing device 2 after the cold drawing device 2 has completed the cold drawing; the waste discharge device 4 is located inside the cold drawing device 2, and the waste discharge device 4 guides the waste material that has been cut apart by the cutting device 3 inside the cold drawing device 2 to be discharged.

[0032] The cold drawing device 2 includes a cold drawing seat 21, an insertion slot 22, clamping blocks 23, a drawing die seat 24, and a limiting device 25. The cold drawing seat 21 is slidably disposed on the upper part of the base 1 along the length direction of the base 1. The drawing die seat 24 is fixedly disposed at one end of the base 1. The drawing die seat 24 and the cold drawing seat 21 are arranged along the length direction of the base 1. The insertion slot 22 is opened on the side of the cold drawing seat 21 near the drawing die seat 24 along the length direction of the base 1. Two clamping blocks 23 are arranged in each insertion slot 22 along the vertical direction of the base 1. The two clamping blocks 23 clamp the steel pipe 7 passing through the insertion slot 22. The clamping blocks 23 are driven by a hydraulic system. The hydraulic system driving the two clamping blocks 23 for clamping is existing technology and will not be described further here. A limiting device 25 is located at one end of the insertion slot 22 inside the cold-drawing base 21. The limiting device 25 blocks the end of the insertion slot 22 inside the cold-drawing base 21. The limiting device 25 includes a limiting plate 251 and a first linear actuator 252. The first linear actuator 252 is vertically arranged inside the cold-drawing base 21, with its output end pointing vertically downwards. The limiting plate 251 is fixedly mounted on the first linear actuator 251. At the output end of 2, the first linear actuator 252 is preferably a linear cylinder. During processing, the steel pipe 7 is inserted into the drawing die 24 from the side away from the cold drawing seat 21. After the end of the steel pipe 7 passes through the drawing die 24, it extends into the insertion groove 22 of the cold drawing seat 21. At this time, the output end of the first linear actuator 252 is in an extended state. The limiting plate 251 blocks the end of the insertion groove 22 located inside the cold drawing seat 21. The end of the steel pipe 7 entering the insertion groove 22 is eventually restricted by the limiting plate 251. Then, the clamping block 23 set in the insertion groove 22 is hydraulically driven. The steel pipe 7 located in the insertion groove 22 is clamped. Since the clamped steel pipe 7 needs to be pulled, the clamped section of the steel pipe 7 will deform when the two clamping blocks 23 clamp the steel pipe 7 in the insertion groove 22. This is because only by applying sufficient force can it be ensured that the clamping blocks 23 will not slide relative to the steel pipe 7 when the cold drawing seat 21 moves along the length direction of the base 1 after clamping the steel pipe 7. This ensures that when the cold drawing seat 21 slides along the length direction of the base 1, the cold drawing seat 21 can drive the steel pipe 7 to pass through the drawing seat stably and achieve the pulling.After the clamping block 23 clamps the end of the steel pipe 7, the cold drawing seat 21 slides along the length of the base 1. The cold drawing seat 21 drives the steel pipe 7 through the drawing die seat 24 for drawing. When the steel pipe 7 has completely passed through the drawing die seat 24, the cutting device 3 is activated. The cutting device 3 cuts the steel pipe 7 at the input port of the cold drawing device 2. Here, the input port of the cold drawing device 2 refers to the side of the cold drawing seat 21 with the insertion groove 22. The steel pipe 7 enters the insertion groove 22 from the above side, hence it is named the input port of the cold drawing device 2. The cutting device 3 cuts the steel pipe at the input port of the cold drawing device 2. 7. After the cutting is completed, the waste discharge device 4 is activated. At this time, the output end of the first linear driver 252 retracts, and the limiting plate 251 moves away from the end of the insertion slot 22 under the drive of the first linear driver 252. At the same time, the clamping block 23 will also release the steel pipe 7 waste located in the insertion slot 22. In this way, the waste discharge device 4 can remove the steel pipe 7 waste in the insertion slot 22. The steel pipe 7 located outside the cold drawing seat 21 after being cut is in a complete state. After the processed steel pipe 7 is unloaded, no secondary processing is required, which improves work efficiency and reduces workload.

[0033] Reference Figure 3 and Figure 6 The waste discharge device 4 includes a material taking device 41 and a collection device 42. The material taking device 41 is arranged inside the cold drawing device 2 along the length of the base 1, and the material taking end of the material taking device 41 faces the input end of the cold drawing device 2. The collection device 42 is arranged below the material taking device 41 and is located inside the cold drawing device 2. The material taking device 41 guides the cut steel pipe 7 waste inside the cold drawing device 2 to the collection device 42 for collection.

[0034] The material taking device 41 is located on the end side of the insertion slot 22 inside the cold drawing seat 21. After the cutting device 3 completes the cutting, the first linear driver 252 drives the limiting plate 251 to release the end of the insertion slot 22. Then the material taking device 41 is started. The material taking device 41 takes out the steel pipe 7 waste material located in the insertion slot 22 from the insertion slot 22. The collecting device 42 is located below the material taking device 41. The material taking device 41 puts the taken out steel pipe 7 waste material into the collecting device 42. The collecting device 42 collects the steel pipe 7 waste material.

[0035] Reference Figure 6 and Figure 9 The material handling device 41 includes a second linear actuator 411 and an electromagnet 412. The second linear actuator 411 is arranged inside the cold drawing device 2 along the length of the base 1, and the output end of the second linear actuator 411 points to the input end of the cold drawing device 2. The electromagnet 412 is fixedly arranged on the output end of the second linear actuator 411. After the electromagnet 412 is energized, it has an adsorption force on the steel pipe 7 waste material located in the cold drawing device 2.

[0036] The second linear actuator 411 is preferably a linear cylinder. When the first linear actuator 252 drives the limit plate 251 to retract and stop running, the second linear actuator 411 starts. The second linear actuator 411 drives the electromagnet 412 to extend. Under the drive of the second linear actuator 411, the electromagnet 412 moves closer to the insertion slot 22. At the same time, the electromagnet 412 is energized. At this time, the clamping block 23 in the insertion slot 22 disengages from the steel pipe 7 scrap. After the electromagnet 412 is energized, it generates magnetism and attracts the steel pipe 7 scrap located in the insertion slot 22. The steel pipe 7 scrap is attracted to the electromagnet 412. Then the second linear actuator 411 starts. The output end of the second linear actuator 411 drives the electromagnet 412 to retract. In this way, the electromagnet 412 can remove the steel pipe 7 scrap located in the insertion slot 22.

[0037] Reference Figure 6 and Figure 10 The collection device 42 includes a discharge trough 421, an inclined plate 422, and a collection box 423. The discharge trough 421 is opened inside the cold drawing device 2 along the width direction of the base 1 and extends out from the side wall of the cold drawing device 2. The inclined plate 422 is inclinedly arranged on the discharge trough 421 along the width direction of the base 1. The collection box 423 is located below the opening of the discharge trough 421 on the side wall of the cold drawing device 2, and the collection box 423 collects the waste steel pipe 7.

[0038] The end of the inclined plate 422 near the opening of the discharge groove 421 is lower than the end of the inclined plate 422 away from the opening of the discharge groove 421. A vibrator 424 is provided at the lower part of the inclined plate 422. After the electromagnet 412 removes the steel pipe 7 waste from the insertion groove 22, the steel pipe 7 waste attracted on the electromagnet 412 is located in the discharge groove 421. At this time, the electromagnet 412 is de-energized, and the steel pipe 7 waste falls onto the inclined plate 422. Guided by the inclined plate 422, it slides into the collection box 423. Since the steel pipe 7 waste is deformed after being squeezed by the clamping block 23, some steel pipe 7 waste will not be able to slide smoothly from the inclined plate 422 into the collection box 423. Therefore, a vibrator 424 is provided at the lower part of the inclined plate 422. Through the vibration of the vibrator 424, the steel pipe 7 waste located on the inclined plate 422 slides smoothly into the collection box 423.

[0039] Reference Figure 5 and Figure 8 The cold drawing machine also includes a dust collection device 5, which is located on one side of the cutting device 3. When the cutting device 3 cuts the steel pipe 7, the dust collection device 5 sucks away the cut debris.

[0040] The dust collection device 5 includes a dust collector 51, which is located on one side of the cutting device 3. The cutting device 3 includes a cutting machine 31 and a lifting device 32. When the lifting device 32 drives the cutting machine 31 to rise and fall along the height direction of the base 1, the dust collector 51 rises and falls synchronously with the cutting machine 31. The dust collector 51 can collect dust at the junction of the cutting machine 31 and the steel pipe 7. In this way, when the cutting machine 31 cuts on the steel pipe 7, the dust collector 51 can quickly suck away the debris, ensuring that there will not be too much debris around the cold drawing seat 21.

[0041] Reference Figure 2 , Figure 5 and Figure 8 The cutting device 3 includes a cutting machine 31 and a lifting device 32. The lifting device 32 is located above the input end of the cold drawing device 2. The cutting machine 31 is located below the lifting device 32. The lifting device 32 drives the cutting machine 31 to move along the height direction of the base 1. When the lifting device 32 drives the cutting machine 31 to descend, it cuts the steel pipe 7.

[0042] The lifting device 32 includes a mounting frame 321, a third linear actuator 322, and a lifting plate 323. The mounting frame 321 is located on the upper part of the side of the cold drawing seat 21 where the insertion slot 22 is provided. The third linear actuator 322 is vertically fixed on the mounting frame 321. The lifting plate 323 is fixed on the output end of the third linear actuator 322. The cutting machine 31 is located at the bottom of the lifting plate 323. The third linear actuator 322 is preferably a linear cylinder. When cutting is required, the third linear actuator 322 drives the lifting plate 323 to descend. The cutting machine 31 located at the bottom of the lifting plate 323 descends synchronously with the lifting plate 323. In this way, after the cutting machine 31 comes into contact with the steel pipe 7, the cutting machine 31 can cut the steel pipe 7.

[0043] Reference Figure 1 and Figure 3 The cold drawing machine also includes a support device 6, which is mounted on the base 1 and provides support for the steel pipe 7 after it has been cold-drawn by the cold drawing device 2.

[0044] Multiple support devices 6 are provided and are evenly arranged along the length of the base 1. After the cold drawing device 2 passes through the support device 6, the support device 6 will be activated and provide support for the steel pipe 7.

[0045] Reference Figures 1-5The support device 6 includes a support plate 61 and a rotary actuator 62. The support plate 61 is horizontally disposed on one side of the base 1. The support plate 61 has a first state and a second state. In the first state, the length direction of the support plate 61 is parallel to the length direction of the base 1. In the second state, the length direction of the support plate 61 is parallel to the width direction of the base 1. At this time, the support plate 61 supports the steel pipe 7. The rotary actuator 62 is vertically disposed at the lower part of the support plate 61. The rotary actuator 62 drives the support plate 61 to switch between the first state and the second state.

[0046] The rotary driver 62 is preferably a servo motor. After the cold-drawn seat 21 slides along the length direction of the base 1, the cold-drawn seat 21 passes through the arranged support devices 6 in sequence over time. Each time the cold-drawn seat 21 passes through the support device 6, the support device 6 will be activated. The rotary driver 62 inside the support device 6 drives the support plate 61 to rotate, so that the support plate 61 switches from the first state to the second state. In the first state, the length direction of the support plate 61 is parallel to the length direction of the base 1. At this time, the support plate 61 does not provide support for the steel pipe 7. When the support plate 61 is in the second state, the length direction of the support plate 61 is parallel to the width direction of the base 1. At this time, the support plate 61 passes under the steel pipe 7 and provides support for the steel pipe 7.

[0047] Reference Figure 2 and Figure 5 The support device 6 also includes a positioning device 64, which is located on one side of the rotary driver 62. The cold drawing device 2 is equipped with a controller. The positioning device 64 identifies the passing cold drawing device 2 and controls the rotary driver 62 to start after the cold drawing device 2 is identified.

[0048] The positioning device 64 includes a photoelectric sensor 641, a first reflector 642, and a second reflector 643. The first reflector 642 and the second reflector 643 are arranged on the side wall of the cold-drawn base 21 along the length direction of the base 1. The photoelectric sensor 641 is set on one side of the support plate 61 along the width direction of the base 1. When the cold-drawn base 21 slides along the length direction of the base 1, the cold-drawn base 21 will drive the first reflector 642 and the second reflector 643 to move along the length direction of the base 1. The first reflector 642 will pass the photoelectric sensor 641 first. At this time, the photoelectric sensor 641 can detect the first signal. The rotary driver 62 is energized. As the cold-drawn base 21 moves, the second reflector 643 will pass the photoelectric sensor 641. The photoelectric sensor 641 can detect the second signal. At this time, it means that the cold-drawn base 21 has completely passed the support device 6. When the rotary driver 62 drives the support plate 61 to rotate, and the support plate 61 switches from the first state to the second state, the support plate 61 will not collide with the cold-drawn base 21.

[0049] Reference Figure 4 and Figure 5 The support device 6 also includes an extension device 65, which is arranged on the support plate 61 along the length direction of the support plate 61. The extension device 65 is used to guide the processed steel pipe 7 to be unloaded along the width direction of the base 1.

[0050] The extension device 65 includes a fifth linear actuator 651 and an extension plate 652. The fifth linear actuator 651 is disposed on the support plate 61 along the length direction of the support plate 61, and the extension plate 652 is disposed on the support plate 61 along the length direction of the support plate 61. One end of the support plate 61 is fixedly connected to the output end of the fifth linear actuator 651. A feeding point 8 is provided on one side of the base 1, which is disposed along the length direction of the base 1. There is a gap between the feeding point 8 and the base 1. If the steel pipe 7 located on the support plate 61 is directly pushed out of the feeding point 61 by the pushing device 63, the steel pipe 7 is likely to fall into the gap, and thus the steel pipe 7 will fall outside the feeding point 8. However, after the extension device 65 is provided, the extension device 65 can ensure the length of the support plate 61. The direction can be extended. When the length direction of the support plate 61 is parallel to the width direction of the base 1, the fifth linear actuator 651 is activated and the extension plate 652 is pushed out. The purpose of setting the extension device 65 instead of setting the length of the support plate 61 to be too long is that if the length of the support plate 61 is set too long, the support plate 61 needs to support the steel pipe 7. After long-term use, the longer support plate 61 is prone to bending. Thus, when the steel pipe 7 needs to be supported, the shorter support plate 61 can provide stable support for the steel pipe 7. At the same time, when unloading, the extension device 65 can make up for the length of the support plate 61, so that the gap between the base 1 and the unloading point 8 can be blocked by the extension device 65, preventing the steel pipe 7 from falling out of the gap when unloading.

[0051] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A three-wire cold drawing machine for processing multiple steel pipes simultaneously, comprising a base (1) and a cold drawing device (2). Its features are, The cold drawing machine also includes a cutting device (3) and a waste discharge device (4). The cutting device (3) is set at the input port of the cold drawing device (2). After the cold drawing device (2) completes the cold drawing, the cutting device (3) cuts the steel pipe (7) at the input port of the cold drawing device (2). The waste discharge device (4) is installed inside the cold drawing device (2). The waste discharge device (4) guides the waste material that has been cut apart by the cutting device (3) inside the cold drawing device (2) to be discharged. The cold drawing device (2) includes a cold drawing seat (21), an insertion slot (22), a clamping block (23), a drawing die seat (24), and a limiting device (25). The cold drawing seat (21) is slidably disposed on the upper part of the base (1) along the length direction of the base (1). The drawing die seat (24) is fixedly disposed at one end of the base (1). The drawing die seat (24) and the cold drawing seat (21) are arranged along the length direction of the base (1). The insertion slot (22) is opened along the length direction of the base (1) on the side of the cold drawing seat (21) near the drawing die seat (24). Two clamping blocks (23) are arranged vertically in each insertion slot (22). A limiting device (25) is set on one end of the insertion slot (22) inside the cold drawing seat (21). The limiting device (25) includes a limiting plate (251) and a first linear driver (252). The first linear driver (252) is vertically set in the cold drawing seat (21). The output end of the first linear driver (252) is vertically downward. The limiting plate (251) is fixedly set on the output end of the first linear driver (252). The waste discharge device (4) includes a material handling device (41) and a collection device (42). The material taking device (41) is arranged inside the cold drawing device (2) along the length direction of the base (1), and the material taking end of the material taking device (41) faces the input end of the cold drawing device (2); The collecting device (42) is located below the material taking device (41). The collecting device (42) is located inside the cold drawing device (2). The material taking device (41) guides the steel pipe (7) waste material cut inside the cold drawing device (2) to the collecting device (42) for collection.

2. The three-line cold drawing machine for simultaneously processing multiple steel pipes according to claim 1, characterized in that, The material handling device (41) includes a second linear drive (411) and an electromagnet (412). The second linear actuator (411) is disposed inside the cold drawing device (2) along the length direction of the base (1), and the output end of the second linear actuator (411) points to the input end of the cold drawing device (2); An electromagnet (412) is fixedly mounted on the output end of the second linear actuator (411). When the electromagnet (412) is energized, it has an adsorption force on the steel pipe (7) scrap located in the cold drawing device (2).

3. A three-line cold drawing machine for simultaneously processing multiple steel pipes according to claim 1, characterized in that, The collection device (42) includes a discharge trough (421), an inclined plate (422), and a collection box (423); The discharge groove (421) is opened inside the cold drawing device (2) along the width direction of the base (1) and extends out from the side wall of the cold drawing device (2); The inclined plate (422) is inclined on the discharge groove (421) along the width direction of the base (1); The collection box (423) is located below the opening on the side wall of the discharge trough (421) of the cold drawing device (2), and the collection box (423) collects the waste material of the steel pipe (7).

4. A three-line cold drawing machine for simultaneously processing multiple steel pipes according to claim 1, characterized in that, The cold drawing machine also includes a dust collection device (5), which is located on one side of the cutting device (3). When the cutting device (3) cuts the steel pipe (7), the dust collection device (5) sucks away the cut debris.

5. A three-line cold drawing machine for simultaneously processing multiple steel pipes according to claim 1, characterized in that, The cutting device (3) includes a cutting machine (31) and a lifting device (32); The lifting device (32) is located above the input end of the cold drawing device (2); The cutting machine (31) is located at the lower part of the lifting device (32). The lifting device (32) drives the cutting machine (31) to move along the height direction of the base (1). When the lifting device (32) drives the cutting machine (31) to descend, it cuts the steel pipe (7).

6. A three-line cold drawing machine for simultaneously processing multiple steel pipes according to claim 1, characterized in that, The cold drawing machine also includes a support device (6), which is set on the base (1) and provides support for the steel pipe (7) after it has been cold drawn by the cold drawing device (2).

7. A three-line cold drawing machine for simultaneously processing multiple steel pipes according to claim 6, characterized in that, The support device (6) includes a support plate (61) and a rotary drive (62). The support plate (61) is horizontally set on one side of the base (1). The support plate (61) has a first state and a second state. In the first state, the length direction of the support plate (61) is parallel to the length direction of the base (1). In the second state, the length direction of the support plate (61) is parallel to the width direction of the base (1). At this time, the support plate (61) supports the steel pipe (7). The rotary driver (62) is vertically arranged at the lower part of the support plate (61), and the rotary driver (62) drives the support plate (61) to switch between the first state and the second state.

8. A three-line cold drawing machine for simultaneously processing multiple steel pipes according to claim 7, characterized in that, The support device (6) also includes a positioning device (64), which is located on one side of the rotary driver (62). A controller is provided on the cold drawing device (2). The positioning device (64) identifies the passing cold drawing device (2) and controls the rotary driver (62) to start after identifying the passing cold drawing device (2).

9. A three-line cold drawing machine for simultaneously processing multiple steel pipes according to claim 7, characterized in that, The support device (6) also includes an extension device (65), which is arranged on the support plate (61) along the length direction of the support plate (61). The extension device (65) is used to guide the processed steel pipe (7) to unload along the width direction of the base (1).

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