A servo direct drive mechanism for a wire drawing machine

Abstract

This utility model discloses a servo direct drive mechanism for a wire drawing machine, belonging to the technical field of drive mechanisms. It includes a servo motor, a mounting plate, and a square cylinder. The servo motor is fixedly mounted on one side of the mounting plate via a bracket. One end of the square cylinder is disc-shaped and rotates through a bearing to the other side of the mounting plate. The drive end of the servo motor is fixedly connected to the square cylinder. In use, this improved servo direct drive mechanism for a wire drawing machine directly drives the drum to rotate, winding the material onto the drum. During this process, an adjustment mechanism drives the drum to reciprocate through the square cylinder, ensuring the material is evenly wound onto the drum. This allows for gradual adjustment of the servo motor's rotation speed based on the number of rotations of the drum. It eliminates the need for expensive components such as PLCs and encoders, resulting in a simple structure and low production and maintenance costs.

Description

Technical Field

[0001] This utility model relates to the technical field of drive mechanisms, and in particular to a servo direct drive mechanism for a wire drawing machine. Background Technology

[0002] A wire drawing machine is a metal plastic processing equipment. Its core purpose is to forcibly draw thick metal rods, wires, or bars through a die into thinner, longer, and higher-performance wires, wires, or bars. The servo direct drive mechanism of the wire drawing machine uses a high-torque, low-speed servo motor that is directly connected to the drum or roller of the wire drawing machine without any reduction gear, thereby precisely controlling the wire stretching and winding process.

[0003] Existing servo direct drive mechanisms for wire drawing machines typically drive the main shaft of the winding drum directly through a servo motor, ensuring that the motor's rotation is completely synchronized with the drum. In this process, the PLC needs to calculate the initial rotational speed and torque required by the drum based on the target linear speed and wire diameter, and the encoder monitors the actual rotational speed and position of the drum in real time. The system calculates the equivalent diameter of the drum in real time based on the thickness of the accumulated wire layer on the drum. The device has a complex structure and high production and maintenance costs. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to provide a servo direct drive mechanism for a wire drawing machine, which only requires adjusting the rotation speed of the servo motor driving the drum according to the number of rotations of the drum. The device has a simple structure and low production and maintenance costs.

[0005] To solve the above problems, this utility model provides a servo direct drive mechanism for a wire drawing machine, including: a servo motor, a mounting plate and a square tube. The servo motor is fixedly mounted on one side of the mounting plate by a bracket. One end of the square tube is set in a disc shape and is rotated through the other side of the mounting plate by a bearing. The drive end of the servo motor is fixedly connected to the square tube. A square tube is slidably sleeved on the outer periphery of a square tube, and the side of the square tube near the mounting plate is set in a circular plate shape and inserted into the mounting plate. A limiting mechanism is provided inside the square tube to constrain the sliding distance of the square tube on the square tube. The adjustment mechanism, located on the outer periphery of the servo motor, is used to drive the square tube to slide back and forth.

[0006] Preferably, the adjustment mechanism includes two piston cylinders symmetrically arranged on the outer periphery of the servo motor, with one end of the piston cylinder fixedly connected to the mounting plate, and a piston rod slidably installed inside the piston cylinder, with the driving end of the piston rod connected to the square cylinder through a connector.

[0007] Preferably, the connector includes an annular groove, which is formed on the side of the square tube near the baffle, and the cross-sectional shape of the annular groove is T-shaped. The driving end of the piston rod is rotatably fitted with a roller, and the outer peripheral wall of the roller is in contact with the inner wall of the annular groove.

[0008] Preferably, a storage cylinder is fixedly installed on the bottom side of the other end of the piston cylinder, and the interior of the storage cylinder is connected to the interior of the corresponding piston cylinder through a connecting hole. A piston plate is slidably installed inside the storage cylinder, and a pressure sensor is fixedly installed on the bottom side of the piston plate, and the bottom end of the pressure sensor is fixedly connected to the inner wall of the corresponding storage cylinder.

[0009] Preferably, the limiting mechanism includes a plurality of rectangular holes symmetrically opened on the outer wall of the square tube and the square tube, and two limiting blocks are symmetrically fixed on the outer wall of the square tube, and each limiting block is in contact with the inner wall of the corresponding rectangular hole.

[0010] Preferably, the square tube is provided with a limiting strip, and the two ends of the limiting strip are in contact with the inner walls of several rectangular holes. A threaded rod is threaded through the limiting strip, and both ends of the threaded rod are rotatably connected to the square tube. The other end of the square tube is fixedly equipped with a driver, and the driving end of the driver is fixedly connected to the threaded rod.

[0011] This utility model has the following beneficial effects: When this improved wire drawing machine servo direct drive mechanism is in use, the servo motor directly drives the drum to rotate, winding the material onto the drum. During this process, the adjustment mechanism drives the drum to move back and forth through the square tube, so that the material is evenly wound on the drum. Thus, the rotation speed of the servo motor-driven drum can be gradually adjusted according to the number of rotations of the drum. It does not require the use of expensive components such as PLC and encoder. The device has a simple structure and low production and maintenance costs. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a perspective view of the overall structure of this utility model; Figure 2 This utility model Figure 1 A 3D view of the square tube and square cylinder after rotating 180 degrees clockwise; Figure 3 This is a left view of the internal structure of part of the square tube and part of the square tube of this utility model; Figure 4This utility model Figure 3 Enlarged view of the structure at point A in the middle; Figure 5 This is a left view of the internal structure of part of the piston cylinder of this utility model.

[0014] In the diagram: 1. Servo motor; 2. Mounting plate; 3. Square cylinder; 4. Square tube; 5. Drive mechanism; 51. Piston cylinder; 52. Piston rod; 53. Connector; 531. Annular groove; 532. Roller; 54. Storage cylinder; 55. Piston plate; 56. Pressure sensor; 6. Limiting mechanism; 61. Rectangular hole; 62. Limiting block; 63. Limiting strip; 64. Threaded rod; 65. Driver. Detailed Implementation

[0015] To make the technical solution and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Example:

[0016] Reference Figure 1 and Figure 2 The present invention discloses a servo direct drive mechanism for a wire drawing machine, comprising: a servo motor 1, a mounting plate 2, and a square tube 3. The servo motor 1 is fixedly mounted on one side of the mounting plate 2 by a bracket. One end of the square tube 3 is disc-shaped and is mounted on the other side of the mounting plate 2 through a bearing. The drive end of the servo motor 1 is fixedly connected to the square tube 3. Square tube 4 is slidably sleeved on the outer periphery of square tube 3, and the side of square tube 4 near mounting plate 2 is set in the shape of a circular plate and inserted into mounting plate 2. A limiting mechanism 6 is provided inside square tube 4 to constrain the sliding distance of square tube 4 on square tube 3. The adjustment mechanism 5 is located on the outer periphery of the servo motor 1 and is used to drive the square tube 4 to slide back and forth.

[0017] In this embodiment, when the improved wire drawing machine servo direct drive mechanism 5 is used, due to the mutual contact between the inner wall of the square tube 3 and the inner wall of the square tube 4 and the mutual contact between the square tube 4 and the inner wall of the roll, the servo motor 1 can directly drive the roll to rotate, and wind the material onto the roll. During this process, the adjustment mechanism drives the roll to move back and forth through the square tube 3, so that the material is evenly wound on the roll. Thus, the rotation speed of the servo motor 1 driving the roll can be gradually adjusted according to the number of rotations of the roll. It does not require the use of expensive components such as PLC and encoder. The device has a simple structure and low production and maintenance costs. Specifically: Please refer to Figure 1 and Figure 2As shown, (the mounting plate 2 has threaded holes at all four corners, and the mounting plate 2 is fixed to the outer frame bracket of the wire drawing machine by bolts). When disassembling the drum, the operator unscrews the bolts on the square tube 4 to release the installation and fixation between the drum and the square tube 4. At this time, the drum can be directly pulled off the square tube 4 to complete the disassembly of the drum. When installing the drum, put the drum on the square tube 4, and then screw the bolts into the square tube 4. At this time, due to the mutual contact between the two ends of the drum and the bolts and the round plate end of the square tube 4, the drum is stably constrained to the outer periphery of the square tube 4, and the installation of the drum is completed. When the material is wound onto the drum, the servo motor 1 starts. At this time, due to the mutual contact between the inner walls of the square tube 3 and the square tube 4, and the mutual contact between the square tube 4 and the inner wall of the drum, the servo motor 1 directly drives the drum to rotate, so as to wind the material into the groove of the drum. At the same time, the adjustment mechanism is activated to drive the square tube 4 to slide back and forth on the square tube 3, thereby adjusting the winding position of the material on the drum groove by adjusting the position of the drum, so that the material is evenly distributed and wound onto the drum groove. When the material is wound on the drum, the servo motor 1 drives the drum to rotate one more layer for each rotation, so that the servo motor 1 can gradually adjust the rotation speed of the drum according to the number of rotations of the drum, and determine the amount of material wound on the drum according to the number of rotations of the drum. It should be noted that when installing the drum, the sliding distance of the square tube 4 on the square tube 3 should be adjusted by the limiting mechanism 6 according to the width of the drum groove, so that the device can adapt to the use of drums with different groove widths.

[0018] In a further preferred embodiment of this utility model, such as Figure 1 , Figure 3 and Figure 5 As shown, the adjustment mechanism 5 includes two piston cylinders 51, which are symmetrically arranged on the outer periphery of the servo motor 1. One end of the piston cylinder 51 is fixedly connected to the mounting plate 2. A piston rod 52 is slidably installed inside the piston cylinder 51, and the driving end of the piston rod 52 is connected to the square cylinder 3 through the connector 53. In this embodiment, please refer to Figure 1 , Figure 3 and Figure 5 As shown, the position of the square tube 4 and the drum is adjusted by the telescopic sliding of the piston rod 52 within the piston cylinder 51, so that the material is evenly distributed layer by layer in the groove of the drum. Specifically: (Please refer to...) Figure 1 and Figure 5As shown, the interface of piston cylinder 51 is connected to an external hydraulic oil injection and extraction device through a pipe. During the material winding process of the drum, the hydraulic oil injection and extraction device injects hydraulic oil into piston cylinder 51 or extracts hydraulic oil from piston cylinder 51 to drive piston rod 52 to slide within piston cylinder 51, thereby driving square tube 4 to slide back and forth on square tube 3.

[0019] In a further preferred embodiment of this utility model, such as Figure 3 and Figure 4 As shown, the connector 53 includes an annular groove 531, which is opened on the side of the square tube 4 near the baffle. The cross-sectional shape of the annular groove 531 is T-shaped. The driving end of the piston rod 52 is rotatably fitted with a roller 532, and the outer peripheral wall of the roller 532 is in contact with the inner wall of the annular groove 531. In this embodiment, please refer to Figure 2 , Figure 3 and Figure 4 As shown, during the process of the servo motor 1 driving the square tube 4 to rotate, the rolling of the roller 532 in the annular groove 531 and the mutual contact between the roller 532 and the inner wall of the annular groove 531 ensure that the driving end of the piston rod 52 is stably connected to the square tube 4 without affecting the rotation of the square tube 4. Specifically, during the rotation of the square tube 4 driven by the servo motor 1, the roller 532 rolls within the annular groove 531, and during the extension and retraction of the piston rod 52 within the piston cylinder 51, the square tube 4 moves together with the piston rod 52 through the mutual contact between the roller 532 and the inner wall of the annular groove 531.

[0020] In a further preferred embodiment of this utility model, such as Figure 3 and Figure 5 As shown, a storage cylinder 54 is fixedly installed on the bottom side of the other end of the piston cylinder 51, and the interior of the storage cylinder 54 is connected to the interior of the corresponding piston cylinder 51 through a connecting hole. A piston plate 55 is slidably installed inside the storage cylinder 54, and a pressure sensor 56 is fixedly installed on the bottom side of the piston plate 55, and the bottom end of the pressure sensor 56 is fixedly connected to the inner wall of the corresponding storage cylinder 54. In this embodiment, please refer to Figure 3 and Figure 5 As shown, when hydraulic oil is injected into the piston cylinder 51 or when hydraulic oil is drawn out of the piston cylinder 51, if the sliding distance of the square tube 4 on the square cylinder 3 reaches the limit, a force in a different direction can be applied to the piston plate 55 through the hydraulic oil, so that the pressure monitored by the pressure sensor 56 increases or decreases rapidly (the overall operation of the device is controlled by an external control host). At this time, the control host controls the square tube 4 to switch the sliding direction. Specifically, when hydraulic oil is injected into the piston cylinder 51, the square tube 4 is not constrained at first. Due to the push of the piston rod 52 by the hydraulic oil, the square tube 4 slides forward on the square cylinder 3. When the forward sliding distance of the square tube 4 reaches the threshold, due to the constraint of the limiting mechanism 6, the square tube 4 cannot continue to slide. At this time, part of the hydraulic oil in the piston cylinder 51 flows into the storage cylinder 54. As the piston plate 55 moves down, the pressure monitored by the pressure sensor 56 increases rapidly. When the hydraulic oil in the piston cylinder 51 is extracted, the piston rod 52 is first pulled back into the piston cylinder 51 to drive the square tube 4 to slide in the opposite direction. When the distance of the square tube 4 sliding in the opposite direction reaches the threshold, the piston rod 52 cannot continue to retract into the piston cylinder 51 due to the mutual contact between the piston rod 52 and the inner wall of the piston cylinder 51. At this time, some of the hydraulic oil in the storage cylinder 54 is sucked into the piston cylinder 51. As the piston plate 55 moves upward, the pressure monitored by the pressure sensor 56 decreases rapidly.

[0021] In a further preferred embodiment of this utility model, such as Figure 2 and Figure 3 As shown, the limiting mechanism 6 includes several rectangular holes 61, which are symmetrically opened on the outer walls of the square tube 3 and the square tube 4. Two limiting blocks 62 are symmetrically fixed on the outer wall of the square tube 3, and each limiting block 62 is in contact with the inner wall of the corresponding rectangular hole 61. In this embodiment, please refer to Figure 2 and Figure 3 As shown, the maximum distance that the square tube 4 reciprocates on the square tube 3 is constrained by the mutual contact between the limiting block 62 and the inner wall of the rectangular hole 61, thereby preventing the square tube 4 from sliding down the square tube 3.

[0022] In a further preferred embodiment of this utility model, such as Figure 2 and Figure 3 As shown, a limiting strip 63 is provided inside the square tube 3, and the two ends of the limiting strip 63 are in contact with the inner wall of several rectangular holes 61. A threaded rod 64 is threaded through the limiting strip 63, and both ends of the threaded rod 64 are rotatably connected to the square tube 3. A driver 65 is fixedly installed at the other end of the square tube 3, and the driving end of the driver 65 is fixedly connected to the threaded rod 64. In this embodiment, please refer to Figure 2 and Figure 3 As shown, the sliding length of the limiting block within the rectangular hole can be adjusted by adjusting the position of the limiting strip within the rectangular hole; Specifically, after the installation of the drum is completed, the driver 65 drives the threaded rod 64 to rotate in the forward or reverse direction (the driver 65 is composed of a housing, a motor and a gear transmission structure). Due to the mutual contact between the limiting strip 63 and the inner wall of the rectangular hole 61, the rotating threaded rod 64 drives the limiting strip 63 to move back and forth within the rectangular hole 61, thereby adjusting the distance between the limiting strip 63 and the limiting block 62. Through the mutual contact between the limiting block 62 and the limiting strip 63, the maximum distance of the square tube 4 sliding back and forth on the square tube 3 is adjusted.

[0023] Working principle: When using the improved wire drawing machine servo direct drive mechanism 5, the drum is placed on the square tube 4, and then the bolt is screwed into the square tube 4. At this time, due to the mutual contact between the two ends of the drum and the bolt and the round plate end of the square tube 4, the drum is stably constrained to the outer periphery of the square tube 4. Then, according to the width of the drum groove, the distance between the limit strip 63 and the limit block 62 is adjusted by the driver 65 and the threaded rod 64 to adjust the maximum distance of the square tube 3 sliding on the square tube 4. The installation of the drum is completed. When the material is wound onto the drum, the servo motor 1 starts and drives the drum to rotate through the square tube 3 and square tube 4, winding the material into the groove of the drum. At the same time, the reciprocating sliding of the piston rod 52 in the piston cylinder 51 drives the drum to move back and forth, so that the material is arranged layer by layer in the groove of the drum. Thus, the servo motor 1 can gradually adjust the rotation speed of the drum according to the number of rotations of the drum, and determine the amount of material wound on the drum according to the number of rotations of the drum. When disassembling the roll, the operator unscrews the bolts on the square tube 4 to release the installation and fixation between the roll and the square tube 4. At this time, the roll can be directly pulled off the square tube 4 to complete the disassembly of the roll, thereby completing the unloading operation of the wound material.

[0024] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A servo direct drive mechanism for a wire drawing machine, characterized in that, include: Servo motor (1), mounting plate (2) and square tube (3). The servo motor (1) is fixedly mounted on one side of the mounting plate (2) by a bracket. One end of the square tube (3) is set in a disc shape and is mounted on the other side of the mounting plate (2) through a bearing. The drive end of the servo motor (1) is fixedly connected to the square tube (3). A square tube (4) is slidably sleeved on the outer periphery of a square tube (3), and the side of the square tube (4) near the mounting plate (2) is set in a circular plate shape and inserted into the mounting plate (2). A limiting mechanism (6) is provided inside the square tube (4) to constrain the sliding distance of the square tube (4) on the square tube (3). The adjustment mechanism (5) is located on the outer periphery of the servo motor (1) and is used to drive the square tube (4) to slide back and forth.

2. The servo direct drive mechanism for a wire drawing machine according to claim 1, characterized in that: The adjustment mechanism (5) includes two piston cylinders (51), which are symmetrically arranged on the outer periphery of the servo motor (1). One end of the piston cylinder (51) is fixedly connected to the mounting plate (2). A piston rod (52) is slidably installed inside the piston cylinder (51), and the driving end of the piston rod (52) is connected to the square cylinder (3) through the connector (53).

3. The servo direct drive mechanism for a wire drawing machine according to claim 2, characterized in that: The connector (53) includes an annular groove (531) which is opened on the side of the square tube (4) near the baffle, and the cross-section of the annular groove (531) is T-shaped. The driving end of the piston rod (52) is rotatably fitted with a roller (532), and the outer peripheral wall of the roller (532) is in contact with the inner wall of the annular groove (531).

4. The servo direct drive mechanism for a wire drawing machine according to claim 3, characterized in that: A storage cylinder (54) is fixedly installed on the bottom side of the other end of the piston cylinder (51), and the interior of the storage cylinder (54) is connected to the interior of the corresponding piston cylinder (51) through a connecting hole. A piston plate (55) is slidably installed inside the storage cylinder (54), and a pressure sensor (56) is provided on the bottom side of the piston plate (55), and the bottom end of the pressure sensor (56) is fixedly connected to the inner wall of the corresponding storage cylinder (54).

5. The servo direct drive mechanism for a wire drawing machine according to claim 4, characterized in that: The limiting mechanism (6) includes several rectangular holes (61) which are symmetrically opened on the outer walls of the square tube (3) and the square tube (4). Two limiting blocks (62) are symmetrically fixed on the outer wall of the square tube (3), and each limiting block (62) is in contact with the inner wall of the corresponding rectangular hole (61).

6. The servo direct drive mechanism for a wire drawing machine according to claim 5, characterized in that: The square tube (3) is provided with a limiting strip (63), and the two ends of the limiting strip (63) are in contact with the inner wall of several rectangular holes (61). A threaded rod (64) is threaded through the limiting strip (63), and both ends of the threaded rod (64) are rotatably connected to the square tube (3). The other end of the square tube (3) is fixedly provided with a driver (65), and the driving end of the driver (65) is fixedly connected to the threaded rod (64).

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