A steel pipe precision cold-drawing machine for reducing product bending deformation
By introducing induction and stabilization devices into the cold drawing equipment, the problem of steel pipe bending and deformation caused by the skew of the moving trolley was solved, achieving stability and high-quality processing during the cold drawing process of steel pipe.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG ZHONGXING EQUIP
- Filing Date
- 2023-12-05
- Publication Date
- 2026-05-29
AI Technical Summary
In existing cold drawing equipment, the instability of the moving trolley during the cold drawing process of steel pipes causes the steel pipes to bend and deform, affecting the processing quality.
The system employs a cold drawing table, a moving device, guide bars, a sensing device, and a stabilizing device. The sensing device monitors the balance of the moving trolley in real time, and the stabilizing device corrects the trolley's skewness, maintains the trolley's balance, and reduces the bending deformation of the steel pipe.
This technology enables real-time sensing and stable balancing of the moving trolley during the cold drawing process, reducing bending deformation of the steel pipe and improving product processing quality.
Smart Images
Figure CN117505566B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of seamless steel pipe technology, specifically to a precision cold drawing machine for steel pipes that reduces product bending deformation. Background Technology
[0002] Cold drawing is a material processing technique. For metallic materials, cold drawing refers to drawing the material at room temperature to achieve a specific shape and mechanical properties. Currently, when cold-drawing steel pipes, a tractor is typically used to fix and move the pipe. To ensure the stability of the tractor, a track is usually installed to guide it. However, after prolonged use, the track wears down, causing the tractor to deviate from the track during movement, resulting in the steel pipe swaying and bending deformation.
[0003] To address this, Chinese Patent CN113263066B discloses a high-precision cold drawing device for high-gloss, corrosion-resistant stainless steel seamless pipes. During operation, multiple support plates are mounted on the cold drawing table body. These support plates detach from the top of the cold drawing table body as the moving trolley moves towards the cold drawing die, thus not affecting the trolley's movement. Simultaneously, as the moving trolley pulls the steel pipe out of the cold drawing die via a traction clamp, the device drives a moving mechanism through a transmission mechanism, sequentially moving the support plates to the bottom of the steel pipe. This effectively supports and guides the steel pipe during traction, preventing vibration of the moving trolley and subsequent bending of the pipe. Furthermore, after cold drawing, the multiple support plates stably guide the steel pipe out, further improving the efficiency of cold drawing production.
[0004] While existing cold drawing equipment supports the steel pipes through a support receiving plate, the direct contact between the support receiving plate and the steel pipe can affect the surface quality of the steel pipe. In addition, the equipment cannot guarantee the stability of the moving trolley during long-term use. Since the steel pipe is still fixed by the traction clamp on the moving trolley, once the moving trolley shakes, it will still cause the steel pipe to shake, resulting in bending and deformation of the steel pipe. Summary of the Invention
[0005] To address the aforementioned issues, a precision cold drawing machine for steel pipes is provided to reduce product bending deformation. By incorporating a cold drawing table, a moving device, a guide bar, a sensing device, and a stabilizing device, the machine solves the problem of steel pipe bending deformation caused by the inability of traditional cold drawing equipment to stably transfer the material trolley.
[0006] To address the problems of existing technologies, this invention provides a precision cold drawing machine for steel pipes that reduces bending deformation. The machine includes a cold drawing table, a moving device, guide bars, a sensing device, and a stabilizing device. The moving device includes a guide rail and a moving trolley. The guide rail is mounted on the cold drawing table. The moving trolley is slidably mounted on the guide rail. A traction clamp for gripping the steel pipe is mounted on the moving trolley. A base is provided at the bottom of the moving trolley, and a support is mounted on the base. The guide bars are elastic, and two guide bars are mounted on the cold drawing table, with the two guide bars located on opposite sides of the guide rail. The guide bars slide in cooperation with the base. The sensing device is mounted on the support and is used to sense the balance of the moving trolley. The stabilizing device is mounted on the base and is used to control the stability of the moving trolley. In operation, when the moving trolley becomes skewed, it compresses the guide bars, causing them to deform. The sensing device detects that the moving trolley is no longer horizontal and activates the stabilizing device to correct the trolley's position, returning it to a horizontal state.
[0007] Preferably, the sensing device includes a balance block and a pressure sensing component; the balance block is slidably mounted on the support; the pressure sensing component is mounted on the support and is used to sense the offset direction of the balance block; in the working state, when the moving trolley is in a balanced state, it is located in the middle position of the base; when the moving trolley deviates from the horizontal plane, the balance block slides in the offset direction of the moving trolley under the action of gravity, the pressure sensing component senses the pressure, and determines the offset direction of the moving trolley based on the pressure direction.
[0008] Preferably, the pressure sensing component includes a first pressure sensor and a first elastic element; two first pressure sensors are provided and are mounted on the support, with the two first pressure sensors located on both sides of the balance block respectively; two first elastic elements are provided, with their two ends connected to the first pressure sensor and the balance block respectively.
[0009] Preferably, the stabilizing device includes a mounting base and a second elastic element; the mounting base is mounted on a base; two stabilizing rods are slidably mounted on the mounting base; the two ends of the second elastic element are respectively connected to the mounting base and the stabilizing rods; the mounting base is also provided with a telescopic control device for controlling the extension and retraction of the stabilizing rods; in the working state, when the sensing device detects that the moving trolley deviates from the horizontal plane, the telescopic control device controls the stabilizing rod on the deviated side to extend, and the stabilizing rod is pressed against the guide bar under the elastic force of the second elastic element.
[0010] Preferably, the telescopic control device includes a locking assembly, a control assembly, and a reset assembly; the locking assembly is mounted on the support and is used to restrict the sliding of the stabilizer bar under the elastic force of the second elastic element; the control assembly is mounted on the support and is used to control the opening and closing of the locking assembly; the reset assembly is mounted on the mounting base and is used to control the reset of the stabilizer bar; in the working state, when the sensing device detects that the moving trolley deviates from the horizontal plane, the control assembly releases the locking assembly from restricting the movement of the stabilizer bar on the offset side, and the stabilizer bar slides towards the guide bar on the offset side under the elastic force of the second elastic element; after the moving trolley regains balance, the reset assembly controls the stabilizer bar to reset and restricts the movement of the stabilizer bar through the locking assembly.
[0011] Preferably, there are two locking assemblies, which are respectively located on both sides of the mounting base near the two stabilizer bars; the locking assembly includes a locking block and a third elastic element; the locking block is slidably mounted on the support; the two ends of the third elastic element are respectively connected to the locking block and the support; the stabilizer bar is provided with a locking groove that can be inserted and engaged with the locking block; in the working state, when the locking block is inserted and engaged with the locking groove on the stabilizer bar, the sliding of the stabilizer bar will be restricted.
[0012] Preferably, the control component includes two locking blocks disposed on the balance block, which are located on opposite sides of the balance block near the two locking blocks. The locking blocks have inclined grooves. In the working state, when the balance block slides toward one of the locking blocks, the locking block on the balance block near the locking block will insert into the inclined groove on the locking block and squeeze the inclined groove, pushing the locking block to move down along the locking groove.
[0013] Preferably, the stabilizer bar is provided with a protrusion; a linear driver is installed on the mounting base, the driving end of the linear driver can be detachably abutted against the protrusion, and there are two linear drivers, which are respectively located on both sides of the balance block; in the working state, when the moving trolley recovers balance from the offset state, the linear driver is activated, and the driving end of the linear driver pushes the protrusion on the stabilizer bar to control the stabilizer bar to reset.
[0014] Preferably, a connecting piece is installed on the guide bar; a second pressure sensor is installed on the cold drawing table, and the connecting piece is connected to the cold drawing table through the second pressure sensor.
[0015] Preferably, the end of the stabilizer bar furthest from the second elastic element is provided with a graphite layer to mitigate wear at the end of the stabilizer bar.
[0016] The advantages of this invention compared to the prior art are:
[0017] 1. This invention achieves the function of real-time sensing of the horizontal state of the moving trolley and stabilizing the trolley body according to the detection results through a cold drawing table, a moving device, a guide bar, a sensing device, and a stabilizing device. When the base of the moving trolley deviates from the horizontal plane, it achieves the effect of controlling the body of the moving trolley, maintaining the balance of the moving trolley, thereby reducing the bending deformation of the steel pipe during the cold drawing process, improving the product processing quality, and solving the problem of steel pipe bending deformation caused by the inability of traditional cold drawing equipment to stabilize the material transfer trolley.
[0018] 2. This invention realizes the function of sensing the balance state of the moving trolley through the balance block and pressure sensing component, and achieves the effect of determining the offset direction of the moving trolley through the pressure sensing component. Attached Figure Description
[0019] Figure 1 This is a three-dimensional schematic diagram of a precision cold drawing machine for steel pipes that reduces product bending deformation in its non-operational state.
[0020] Figure 2 This is a three-dimensional schematic diagram of a precision cold drawing machine for steel pipes that reduces product bending deformation in its working state.
[0021] Figure 3 This is a three-dimensional schematic diagram of a moving trolley in a precision cold drawing machine for steel pipes that reduces product bending deformation.
[0022] Figure 4 This is a three-dimensional exploded diagram of the base, sensing device, stabilizing device, and telescopic control device in a precision cold drawing machine for steel pipes that reduces product bending deformation.
[0023] Figure 5 This is a three-dimensional schematic diagram of the support, sensing device, and telescopic control device in a precision cold drawing machine for steel pipes that reduces product bending deformation.
[0024] Figure 6 This is a three-dimensional schematic diagram of an induction device in a precision cold drawing machine for steel pipes that reduces product bending deformation.
[0025] Figure 7 This is a three-dimensional schematic diagram of a stabilizing device and resetting assembly in a precision cold drawing machine for steel pipes designed to reduce product bending deformation.
[0026] Figure 8 This is a three-dimensional exploded diagram of the support and locking components in a precision cold drawing machine for steel pipes that reduces product bending deformation.
[0027] Figure 9 This is a three-dimensional exploded diagram of a stabilizing device and a telescopic control device in a precision cold drawing machine for steel pipes that reduces product bending deformation.
[0028] Figure 10This is a three-dimensional exploded diagram of the guide bar, connecting piece, and second pressure sensor in a precision cold drawing machine for steel pipes designed to reduce product bending deformation.
[0029] The diagram is labeled as follows: 1-Cold drawing table; 11-Steel pipe; 2-Moving device; 21-Guide rail; 22-Moving trolley; 221-Traction clamp; 222-Base; 223-Support; 3-Guide bar; 31-Connecting piece; 32-Second pressure sensor; 33-Bolt; 4-Sensing device; 41-Balance block; 42-Pressure sensing assembly; 421-First pressure sensor; 422-First elastic element; 5-Stabilizing device; 51-Mounting base; 511-Stabilizing rod; 512-Graphite layer; 52-Second elastic element; 6-Telescopic control device; 61-Locking assembly; 611-Locking block; 612-Third elastic element; 613-Locking groove; 62-Control assembly; 621-Inclined groove; 622-Card block; 63-Reset assembly; 631-Protrusion; 632-Linear actuator; 6321-Drive end. 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 A precision cold drawing machine for steel pipes to reduce bending deformation includes a cold drawing table 1, a moving device 2, guide bars 3, a sensing device 4, and a stabilizing device 5. The moving device 2 includes a guide rail 21 and a moving trolley 22. The guide rail 21 is mounted on the cold drawing table 1. The moving trolley 22 is slidably mounted on the guide rail 21. The moving trolley 22 is equipped with a traction clamp 221 for clamping the steel pipe 11. A base 222 is provided at the bottom of the moving trolley 22, and a support 223 is mounted on the base 222. The guide bars 3 are elastic, and there are two guide bars 3 mounted on the cold drawing table 1. Guide bars 3 are located on both sides of guide rail 21, and guide bars 3 slide in cooperation with base 222; sensing device 4 is set on support 223 and is used to sense the balance of the moving trolley 22; stabilizing device 5 is set on base 222 and is used to control the movement stability of the moving trolley 22; in the working state, when the moving trolley 22 tilts, it squeezes the guide bar 3, the guide bar 3 deforms, the sensing device 4 senses that the moving trolley 22 is no longer in a horizontal state, activates the stabilizing device 5, corrects the body of the moving trolley 22, and makes the moving trolley 22 return to a horizontal state.
[0032] This invention achieves the function of real-time sensing of the horizontal state of the moving trolley 22 and stabilizing the body of the moving trolley 22 based on the detection results through the cold drawing table 1, the moving device 2, the guide bar 3, the sensing device 4, and the stabilizing device 5. When the base 222 of the moving trolley 22 deviates from the horizontal plane, it achieves the effect of controlling the body of the moving trolley 22, maintaining the balance of the moving trolley 22, thereby reducing the bending deformation of the steel pipe 11 during the cold drawing process, improving the product processing quality, and solving the problem that the traditional cold drawing equipment cannot stabilize the material transfer trolley, which causes the steel pipe 11 to bend and deform. The sensing device 4 is electrically connected to the controller; a drive device for controlling the movement of the mobile trolley 22 is provided below the base 222 of the mobile trolley 22. The drive device is not shown in the figure. The drive device can be a roller and a servo motor, or a belt drive structure. The guide bar 3 is preferably a flexible steel bar. During the processing, the operator first moves one end of the steel pipe 11 to the mobile trolley 22 and fixes the end of the steel pipe 11 to the mobile trolley 22 by the traction clamp 221. Then, the drive device below the base 222 drives the mobile trolley 22 to move along the guide rail 21, thereby pulling the steel pipe 11. 1. Cold drawing process is performed; During the movement, due to wear on the bottom of the moving carriage 22 or the guide rail 21, the gap between the moving carriage 22 and the guide rail 21 increases, causing the moving carriage 22 to shake, which in turn squeezes the guide bar 3 in the corresponding direction, causing the guide bar 3 to deform slightly. At the same time, the sensing device 4 senses that the base 222 of the moving carriage 22 deviates from the horizontal plane, and then feeds back a signal to the controller, and at the same time activates the stabilizing device 5. The stabilizing device 5 quickly stabilizes the body of the moving carriage 22. After the body of the moving carriage 22 returns to a balanced state, the sensing device 4 feeds back a signal to the controller, and at the same time deactivates the stabilizing device 5.
[0033] Reference Figure 4 and Figure 5 The sensing device 4 includes a balance block 41 and a pressure sensing component 42. The balance block 41 is slidably mounted on the support 223. The pressure sensing component 42 is mounted on the support 223 and is used to sense the offset direction of the balance block 41. In the working state, when the moving trolley 22 is in a balanced state, it is located in the middle position of the base 222. When the moving trolley 22 deviates from the horizontal plane, the balance block 41 slides in the offset direction of the moving trolley 22 under the action of gravity. The pressure sensing component 42 senses the pressure and determines the offset direction of the moving trolley 22 based on the pressure direction.
[0034] This invention achieves the function of sensing the balance state of the mobile trolley 22 through the balance block 41 and the pressure sensing component 42, and also determines the offset direction of the mobile trolley 22 through the pressure sensing component 42. The pressure sensing component 42 is electrically connected to the controller. During movement, due to wear on the bottom of the mobile trolley 22 or the guide rail 21, the gap between the mobile trolley 22 and the guide rail 21 increases, causing the mobile trolley 22 to shake. This, in turn, squeezes the guide bar 3 in the corresponding direction, causing the guide bar 3 to deform slightly. At the same time, the mobile trolley 22 tilts, and the balance block 41 slides in the offset direction of the mobile trolley 22 under the action of gravity. Then, the pressure sensing component 42 senses the pressure, feeds back a signal to the controller, and simultaneously activates the stabilizing device 5. The stabilizing device 5 quickly stabilizes the body of the mobile trolley 22. After the body of the mobile trolley 22 returns to a balanced state, the sensing device 42 feeds back a signal to the controller and simultaneously deactivates the stabilizing device 5.
[0035] Reference Figure 5 and Figure 6 The pressure sensing component 42 includes a first pressure sensor 421 and a first elastic element 422; there are two first pressure sensors 421 and they are mounted on the support 223, with the two first pressure sensors 421 located on both sides of the balance block 41 respectively; there are two first elastic elements 422, with the two ends of the first elastic elements 422 connected to the first pressure sensor 421 and the balance block 41 respectively.
[0036] The present invention realizes the function of sensing the offset direction of the balance block 41 through the first pressure sensor 421 and the first elastic element 422. The first pressure sensor 421 is electrically connected to the controller. During movement, due to wear on the bottom of the moving trolley 22 or the guide rail 21, the gap between the moving trolley 22 and the guide rail 21 increases, causing the moving trolley 22 to shake. This causes the guide bar 3 in the corresponding direction to be squeezed, resulting in slight deformation of the guide bar 3. The moving trolley 22 tilts, and the balance block 41 slides in the direction of the shift of the moving trolley 22 under the action of gravity. The first elastic element 422 in the corresponding direction contracts, and the first pressure sensor 421 senses the pressure change and sends a feedback signal to the controller. Then, based on the signal fed back by the first pressure sensor 421, the controller determines the direction of the shift of the balance block 41 and activates the stabilizing device 5. The stabilizing device 5 quickly stabilizes the body of the moving trolley 22. After the body of the moving trolley 22 returns to a balanced state, the balance block 41 is once again on the horizontal surface, and the gravity it experiences no longer produces a horizontal component force. Under the elastic force of the first elastic elements 422 on both sides, the balance block 41 is once again in the middle position of the base 222, and the stabilizing device 5 is closed.
[0037] Reference Figure 3 and Figure 4The stabilizing device 5 includes a mounting base 51 and a second elastic element 52. The mounting base 51 is mounted on the base 222. Two stabilizing rods 511 are slidably mounted on the mounting base 51. The two ends of the second elastic element 52 are respectively connected to the mounting base 51 and the stabilizing rods 511. The mounting base 51 is also provided with a telescopic control device 6 for controlling the extension and retraction of the stabilizing rods 511. In the working state, when the sensing device 4 senses that the moving trolley 22 deviates from the horizontal plane, the telescopic control device 6 controls the stabilizing rod 511 on the offset side to extend, and the stabilizing rod 511 is pressed against the guide bar 3 under the elastic force of the second elastic element 52.
[0038] During movement, wear on the bottom of the trolley 22 or the guide rail 21 increases the gap between the trolley 22 and the guide rail 21, causing the trolley 22 to shake. This causes the guide rail 3 to be squeezed in the corresponding direction, resulting in slight deformation of the guide rail 3. The trolley 22 then tilts, and the balance block 41 slides in the direction of the trolley 22's offset under the influence of gravity. The first elastic element 422 in the corresponding direction contracts, and the first pressure sensor 421 senses the pressure change and sends a feedback signal to the controller. The controller then uses the feedback signal from the first pressure sensor 421 to determine the offset direction of the balance block 41. At the same time, the telescopic control device 6 controls the extension of the stabilizing rod 511 on the offset side. Under the elastic force of the second elastic element 52, the stabilizing rod 511 abuts against the guide rail 3, quickly stabilizing the body of the trolley 22 and preventing it from shifting along the gap between itself and the guide rail 21. Meanwhile, as the trolley 22 moves, the end of the stabilizing rod 511 that contacts the guide rail 3 slides along the inner side of the guide rail 3. After the body of the mobile trolley 22 returns to a balanced state, the balance block 41 is once again on a horizontal surface, and the gravity it experiences no longer generates a horizontal component force. Under the elastic force of the first elastic members 422 on both sides, the balance block 41 is once again in the middle position of the base 222. At the same time, the tension control device 6 overcomes the elastic force of the second elastic member 52 to control the stabilizing rod 511 to reset, so as to stabilize the body balance of the mobile trolley 22 when the mobile trolley 22 shifts again.
[0039] Reference Figure 4 , Figure 5 and Figure 7The telescopic control device 6 includes a locking assembly 61, a control assembly 62, and a reset assembly 63. The locking assembly 61 is mounted on the support 223 and is used to limit the sliding of the stabilizer bar 511 under the elastic force of the second elastic member 52. The control assembly 62 is mounted on the support 223 and is used to control the opening and closing of the locking assembly 61. The reset assembly 63 is mounted on the mounting base 51 and is used to control the reset of the stabilizer bar 511. In the working state, when the sensing device 4 senses that the moving trolley 22 deviates from the horizontal plane, the control assembly 62 releases the movement restriction of the stabilizer bar 511 on the offset side by the locking assembly 61, and the stabilizer bar 511 slides towards the guide bar 3 on the offset side under the elastic force of the second elastic member 52. After the moving trolley 22 returns to balance, the reset assembly 63 controls the stabilizer bar 511 to reset and limits the movement of the stabilizer bar 511 by the locking assembly 61.
[0040] This invention achieves the function of controlling the extension and retraction of the stabilizer bar 511 through locking component 61, control component 62, and reset component 63. When the moving trolley 22 tilts, the balance block 41 slides in the direction of the tilt under the action of gravity, and the first elastic element 422 in the corresponding direction contracts. The first pressure sensor 421 senses the pressure change and feeds back a signal to the controller. Then, the controller determines the direction of the tilt of the balance block 41 through the signal fed back by the first pressure sensor 421. At the same time, the control component 62 releases the movement restriction of the stabilizer bar 511 on the tilt side by the locking component 61. The stabilizer bar 511 quickly pops out under the elastic force of the second elastic element 52 and abuts against the guide bar 3, quickly stabilizing the body of the moving trolley 22. The trolley 22 will not deviate along the gap between it and the guide rail 21. After the body of the trolley 22 returns to a balanced state, the balance block 41 is on the horizontal plane again, and the gravity it is subjected to no longer generates a horizontal component force. Under the elastic force of the first elastic members 422 on both sides, the balance block 41 is once again in the middle position of the base 222. At the same time, the reset component 63 overcomes the elastic force of the second elastic member 52 to control the stabilizer 511 to reset. After the stabilizer 511 is reset, the movement of the stabilizer 511 is restricted again by the locking component 61 so as to stabilize the body of the trolley 22 again when the trolley 22 deviates.
[0041] Reference Figure 5 , Figure 8 and Figure 9The locking assembly 61 has two parts, which are respectively located on both sides of the mounting base 51 near the two stabilizer bars 511. The locking assembly 61 includes a locking block 611 and a third elastic member 612. The locking block 611 is slidably mounted on the support 223. The two ends of the third elastic member 612 are respectively connected to the locking block 611 and the support 223. The stabilizer bar 511 is provided with a locking groove 613 that can be inserted and engaged with the locking block 611. In the working state, when the locking block 611 is inserted and engaged with the locking groove 613 on the stabilizer bar 511, the sliding of the stabilizer bar 511 will be restricted.
[0042] When the trolley 22 tilts, the balance block 41 slides in the direction of the trolley 22 under the action of gravity. The first elastic element 422 in the corresponding direction contracts, the first pressure sensor 421 senses the pressure change and sends a feedback signal to the controller. Then, the controller determines the direction of the offset of the balance block 41 through the feedback signal from the first pressure sensor 421. At the same time, the control component 62 overcomes the elastic force of the third elastic element 612 and controls the locking block 611 on the offset side to move down, so that the locking block 611 separates from the locking groove 613. This releases the movement restriction of the locking component 61 on the stabilizing rod 511 on the offset side, and the stabilizing rod 511 on the offset side quickly pops out under the action of the elastic force of the second elastic element 52 and abuts against the guide bar 3, quickly stabilizing the body of the trolley 22 and preventing the trolley 22 from deviating along the gap between it and the guide rail 21.
[0043] Reference Figure 5 , Figure 6 and Figure 8 The control component 62 includes two locking blocks 622 disposed on the balance block 41, which are located on opposite sides of the balance block 41 near the two locking blocks 611. The locking blocks 611 are provided with inclined grooves 621. In the working state, when the balance block 41 slides toward one of the locking blocks 611, the locking block 622 on the balance block 41 near the locking block 611 will insert into the inclined groove 621 on the locking block 611 and squeeze the inclined groove 621, pushing the locking block 611 down along the locking groove 613.
[0044] When the trolley 22 deviates from the horizontal plane, the balance block 41 slides towards the offset side under the action of gravity. Then, the locking block 622 on the balance block 41 presses the inclined groove 621 on the locking block 611 on the offset side, pushing the locking block 611 down along the locking groove 613. After the locking block 611 separates from the locking groove 613, the locking block 611 no longer restricts the movement of the stabilizing rod 511. The stabilizing rod 511 pops out under the elastic force of the second elastic element 52 and abuts against the guide bar 3, thereby supporting the trolley 22 and stabilizing the body of the trolley 22. After the trolley 22 returns to balance, the stabilizing rod 511 is reset by the reset component 63. Through the cooperation of the sensing device 4 and the stabilizing device 5, the service life of the trolley 22 and the guide rail 21 is extended. When the parts are slightly worn, the movement trajectory of the trolley 22 can be stabilized, thereby ensuring the processing quality of the steel pipe 11.
[0045] Reference Figure 7 and Figure 9 The stabilizer bar 511 is provided with a protrusion 631; a linear driver 632 is installed on the mounting base 51, and the driving end 6321 of the linear driver 632 can be separated and abutted against the protrusion 631. There are two linear drivers 632, which are located on both sides of the balance block 41 respectively. In the working state, when the moving trolley 22 recovers balance from the offset state, the linear driver 632 is activated, and the driving end 6321 of the linear driver 632 pushes the protrusion 631 on the stabilizer bar 511 to control the stabilizer bar 511 to reset.
[0046] The linear actuator 632 is preferably a linear cylinder, and is electrically connected to the controller. When the trolley 22 deviates, the sensing device 4 senses that the trolley 22 deviates from the horizontal plane. Then, the control component 62 releases the movement restriction of the stabilizer bar 511 by the locking component 61 on the deviated side, and the stabilizer bar 511 extends. At the same time, the stabilizer bar 511 drives the protrusion 631 to move towards the driving end 6321 of the linear actuator 632. When the stabilizer bar 511 is fully extended, the protrusion 631 of the stabilizer bar 511 just abuts against the driving end 6321 of the linear actuator 632 on the corresponding side. After the trolley 22 is balanced again, the linear actuator 632 is activated. The driving end 6321 of the linear actuator 632 pushes the protrusion 631 of the stabilizer bar 511, thereby driving the stabilizer bar 511 to reset. After the stabilizer bar 511 is reset, the locking block 611 is inserted into the locking groove 613 under the elastic force of the third elastic element 612, which restricts the movement of the stabilizer bar 511 again.
[0047] Reference Figure 1 and Figure 10 A connecting piece 31 is installed on the guide bar 3; a second pressure sensor 32 is installed on the cold drawing table 1, and the connecting piece 31 is connected to the cold drawing table 1 through the second pressure sensor 32.
[0048] The connecting piece 31 is connected to the guide bar 3 by bolts 33. When the moving trolley 22 deviates, the stabilizing rod 511 on the deviated side extends. However, if the deviation of the moving trolley 22 is too large and exceeds the specified range, the stabilizing rod 511 will still be unable to stabilize the body of the moving trolley 22 after it extends. The pressure on the guide bar 3 will exceed the normal value. After the first pressure sensor 421 senses that the pressure is too large, it sends a feedback signal to the controller. The controller stops the operation of the moving trolley 22 and stops the processing, thus avoiding poor processing of the steel pipe 11 and reducing cost losses.
[0049] Reference Figure 7 The end of the stabilizer bar 511 away from the second elastic element 52 is provided with a graphite layer 512 for reducing wear at the end of the stabilizer bar 511.
[0050] When the moving trolley 22 deviates, the body of the moving trolley 22 needs to be stabilized by the contact between the stabilizer bar 511 and the guide bar 3. The moving trolley 22 will continue to move. Before the stabilizer bar 511 returns to its original position, there will be sliding friction between the stabilizer bar 511 and the guide bar 3. Therefore, in order to reduce the wear of the stabilizer bar 511 and the guide bar 3, a graphite layer 512 is provided at the end of the stabilizer bar 511 for transition. Graphite has good lubrication and wear resistance properties, thereby slowing down the wear rate of the parts and improving the operating stability of the cold drawing machine.
[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 precision cold drawing machine for steel pipes that reduces product bending deformation, characterized in that, It includes a cold drawing table (1), a moving device (2), a guide bar (3), a sensing device (4), and a stabilizing device (5). The mobile device (2) includes a guide rail (21) and a mobile trolley (22); The guide rail (21) is set on the cold drawing table (1); The mobile trolley (22) is slidably mounted on the guide rail (21); The mobile trolley (22) is equipped with a traction clamp (221) for clamping the steel pipe (11); The bottom of the mobile trolley (22) is provided with a base (222), and a support (223) is installed on the base (222); The guide bar (3) is elastic. There are two guide bars (3) and they are installed on the cold drawing table (1). The two guide bars (3) are located on both sides of the guide rail (21) and the guide bar (3) slides with the base (222). The sensing device (4) is mounted on the support (223) and is used to sense the balance of the moving trolley (22); The stabilizing device (5) is mounted on the base (222) and is used to control the movement stability of the mobile trolley (22); When the mobile trolley (22) is tilted during operation, it squeezes the guide bar (3), causing the guide bar (3) to deform. The sensing device (4) senses that the mobile trolley (22) is no longer in a horizontal state and activates the stabilizing device (5) to correct the body of the mobile trolley (22) and bring the mobile trolley (22) back to a horizontal state. The stabilizing device (5) includes a mounting base (51) and a second elastic element (52); The mounting bracket (51) is mounted on the base (222); Two stabilizer bars (511) are slidably mounted on the mounting base (51); The two ends of the second elastic element (52) are connected to the mounting base (51) and the stabilizer bar (511) respectively; The mounting base (51) is also equipped with a telescopic control device (6) for controlling the extension and retraction of the stabilizer bar (511). In the working state, when the sensing device (4) senses that the moving trolley (22) deviates from the horizontal plane, the telescopic control device (6) controls the extension of the stabilizing rod (511) on the offset side, and the stabilizing rod (511) presses against the guide bar (3) under the elastic force of the second elastic element (52). The telescopic control device (6) includes a locking assembly (61), a control assembly (62), and a reset assembly (63). The locking assembly (61) is disposed on the support (223) and is used to limit the sliding of the stabilizer bar (511) under the elastic force of the second elastic element (52); The control component (62) is mounted on the support (223) and is used to control the opening and closing of the locking component (61); The reset assembly (63) is mounted on the mounting base (51) and is used to control the reset of the stabilizer bar (511); In operation, when the sensing device (4) senses that the moving trolley (22) deviates from the horizontal plane, the control component (62) releases the locking component (61) from restricting the movement of the stabilizer bar (511) on the offset side. The stabilizer bar (511) slides toward the guide bar (3) on the offset side under the elastic force of the second elastic element (52). After the moving trolley (22) returns to balance, the reset component (63) controls the stabilizer bar (511) to reset and restricts the movement of the stabilizer bar (511) through the locking component (61).
2. The precision cold drawing machine for steel pipes to reduce product bending deformation according to claim 1, characterized in that, The sensing device (4) includes a balance block (41) and a pressure sensing component (42). The balance block (41) is slidably mounted on the support (223); The pressure sensing component (42) is mounted on the support (223) and is used to sense the offset direction of the balance block (41); When the mobile trolley (22) is in a balanced state, it is located in the middle position of the base (222). When the mobile trolley (22) deviates from the horizontal plane, the balance block (41) slides in the direction of the mobile trolley (22) under the action of gravity. The pressure sensing component (42) senses the pressure and determines the direction of the mobile trolley (22) according to the direction of the pressure.
3. A precision cold drawing machine for steel pipes to reduce product bending deformation according to claim 2, characterized in that, The pressure sensing assembly (42) includes a first pressure sensor (421) and a first elastic element (422). Two first pressure sensors (421) are provided and are mounted on the support (223). The two first pressure sensors (421) are located on both sides of the balance block (41). Two first elastic elements (422) are provided, and the two ends of the first elastic elements (422) are connected to the first pressure sensor (421) and the balance block (41) respectively.
4. A precision cold drawing machine for steel pipes to reduce product bending deformation according to claim 1, characterized in that, Two locking assemblies (61) are provided and are located on both sides of the mounting base (51) near the two stabilizer bars (511); The locking assembly (61) includes a locking block (611) and a third elastic element (612). The locking block (611) is slidably mounted on the support (223); The two ends of the third elastic element (612) are connected to the locking block (611) and the support (223) respectively; The stabilizer bar (511) has a locking groove (613) that can be inserted and engaged with the locking block (611). When the locking block (611) is engaged with the locking groove (613) on the stabilizer bar (511) in the working state, the sliding of the stabilizer bar (511) will be restricted.
5. A precision cold drawing machine for steel pipes to reduce product bending deformation according to claim 4, characterized in that, The control component (62) includes two locking blocks (622) disposed on the balance block (41), the two locking blocks (622) being located on both sides of the balance block (41) near the two locking blocks (611); A slanted groove (621) is provided on the locking block (611); In the working state, when the balance block (41) slides toward one of the locking blocks (611), the locking block (622) on the balance block (41) near the locking block (611) will insert into the inclined groove (621) on the locking block (611) and squeeze the inclined groove (621), pushing the locking block (611) to move down along the locking groove (613).
6. A precision cold drawing machine for steel pipes to reduce product bending deformation according to any one of claims 1-5, characterized in that, The stabilizer bar (511) is provided with a protrusion (631); A linear driver (632) is mounted on the mounting base (51). The driving end (6321) of the linear driver (632) can be detachably abutted against the protrusion (631). There are two linear drivers (632), which are located on both sides of the balance block (41). In the working state, when the moving trolley (22) recovers balance from the offset state, the linear driver (632) is started, and the driving end (6321) of the linear driver (632) pushes the protrusion (631) on the stabilizer bar (511) to control the stabilizer bar (511) to reset.
7. A precision cold drawing machine for steel pipes to reduce product bending deformation according to claim 1, characterized in that, A connecting piece (31) is installed on the guide strip (3); A second pressure sensor (32) is installed on the cold drawing table (1), and the connecting piece (31) is connected to the cold drawing table (1) through the second pressure sensor (32).
8. A precision cold drawing machine for steel pipes to reduce product bending deformation according to claim 1, characterized in that, The end of the stabilizer bar (511) away from the second elastic element (52) is provided with a graphite layer (512) for mitigating wear at the end of the stabilizer bar (511).