A pipe material discharge tensioning device for a chemical liquid supply system

Abstract

The present invention relates to a pipe unloading and tensioning device for a chemical liquid supply system. The pipe unloading and tensioning device comprises a unloading mechanism, a feeding mechanism, and an unloading auxiliary mechanism. The unloading mechanism includes a unloading tray for winding the pipe. The feeding mechanism is used to transport the pipe to a subsequent station for straightening the pipe. The unloading auxiliary mechanism is spaced apart between the unloading mechanism and the feeding mechanism and comprises a housing extending vertically, a support portion for limiting and supporting the pipe, and a position sensor for detecting the current height of the pipe. The support portion is configured to reciprocate vertically with the pipe to adjust the tension of the pipe. The pipe unloading and tensioning device is configured to reduce or stop the unloading mechanism's unloading speed when the position sensor detects that the pipe's current height is below a first preset height; and to increase the unloading mechanism's unloading speed when the position sensor detects that the pipe's current height is above a second preset height.

Description

Technical Field

[0001] The invention relates to the technical field of pipe straightening, and in particular to a pipe unloading and tensioning device for a chemical liquid supply system. Background Art

[0002] Chemical liquid supply systems typically use PFA hoses to transport chemical liquids. However, during the manufacturing process, the PFA hose material may bend, twist, or deform due to material and process reasons. These deformations can affect the normal use and connection of the pipes, and may even cause the pipes to rupture. At the same time, for the delivery pipes of the chemical liquid supply system, straight pipes are often used to facilitate the transportation of chemical liquids and reduce transportation resistance. Therefore, the pipes need to be straightened and cut to eliminate internal and external stresses and ensure that their shape and size meet the requirements. After forming, the pipes are generally wound on the discharge tray of the discharge mechanism. Before the straightening and cutting process, the pipes need to be transported through the discharge mechanism in conjunction with the feeding mechanism. The discharge speed and feeding speed must be consistent to ensure that the pipe maintains a certain range of tension.

[0003] However, the two motors driving the unloading and feeding mechanisms have weak anti-interference capabilities and are prone to step loss after long-term use. This reduces the coordination between the two motors, resulting in an inconsistency between the unloading and feeding speeds. When the unloading speed is faster than the feeding speed for an extended period, the pipes will fall and accumulate. The pipe tension will be too low, making the pipes more likely to loosen and twist, affecting the subsequent heating and straightening results. Furthermore, the continued falling of the pipes will eventually contact the ground, causing friction and damage. When the unloading speed is slower than the feeding speed for an extended period, the pipes will be overstretched and deformed, resulting in excessive pipe tension. This will cause the pipes to become thinner during the subsequent heating and straightening process, failing to meet standard requirements. Summary of the Invention

[0004] The purpose of the present invention is to provide a pipe material discharge tensioning device for a chemical liquid supply system, which can automatically adjust the discharge speed of the discharge mechanism according to the current height of the pipe material to maintain the consistency of the discharge speed and the feeding speed, and ensure that the pipe material tensioning force is moderate.

[0005] To achieve the above object, according to a first aspect of the present invention, a pipe material discharge tensioning device for a chemical liquid supply system is provided, comprising:

[0006] A discharge mechanism, comprising a discharge tray for winding the tube material and a discharge motor;

[0007] A feeding mechanism, provided with a feeding motor, for conveying the pipe material to a subsequent station for straightening the pipe material;

[0008] a material discharge auxiliary mechanism, spaced apart and disposed between the material discharge mechanism and the material feeding mechanism, the material discharge auxiliary mechanism comprising a housing extending in a vertical direction, a support portion for limiting and supporting the pipe material, and a position sensor for detecting the height of the current position of the pipe material, the support portion being configured to reciprocate along the vertical direction with the pipe material to adjust the tension state of the pipe material;

[0009] The pipe material discharge tensioning device is configured to reduce or stop the discharge speed of the discharge mechanism when the position sensor detects that the current position of the pipe material is lower than a first preset height; and to increase the discharge speed of the discharge mechanism when the position sensor detects that the current position of the pipe material is higher than a second preset height.

[0010] Optionally, the pipe material unloading and tensioning device for the chemical liquid supply system further includes a control system, and the control system includes:

[0011] a deviation calculation module, connected to the unloading motor and the feeding motor, for obtaining the actual speeds of the unloading motor and the feeding motor and calculating the actual speed difference between the unloading motor and the feeding motor to obtain the motor speed deviation;

[0012] A control module is connected to the deviation calculation module, the position sensor and the unloading motor, and is used to automatically adjust the speed feedforward gain parameter of the unloading motor according to the motor speed deviation to improve the response speed of the unloading motor, and generate a control adjustment signal according to the detection information of the position sensor and transmit it to the unloading motor.

[0013] Optionally, the speed feedforward gain parameter K of the unwinding motor P is the ratio of the motor speed deviation Δv to the cycle time T1 output by the current loop integrator of the unwinding motor, and is obtained by the following formula:

[0014]

[0015] Optionally, the discharge mechanism further includes:

[0016] An anti-loosening pressure roller is used to press the pipe material wound on the discharge tray;

[0017] A radial adjustment component is arranged in the discharge tray and is used to radially expand or contract the diameter of the discharge tray to adapt to the pipes of different diameters and tighten them. The radial adjustment component includes a supporting main board, an adjusting screw, an adjusting nut, an adjusting sleeve sleeved on the adjusting screw, an expansion part with a limiting wheel and a movable connecting rod arranged between the expansion part and the adjusting sleeve. The expansion part is configured to push the adjusting sleeve to move axially along the adjusting screw through the adjusting nut to push the expansion part to expand or contract radially.

[0018] Optionally, the support portion includes:

[0019] A support column is disposed in the housing;

[0020] a floating plate, sleeved on the support column, with an end portion thereof passing through the shell and extending horizontally outward;

[0021] The floating roller is arranged at the end of the floating plate and is used for limiting and supporting the pipe material.

[0022] Optionally, the position sensor includes:

[0023] a first position sensor, disposed at a first preset height within the housing, wherein the first preset height is located at a lower position of the housing;

[0024] a second position sensor, disposed at a second preset height within the housing, the second preset height being located at an upper position of the housing;

[0025] a third position sensor disposed at a third preset height within the housing, the third preset height being close to the second preset height and below the second preset height;

[0026] A fourth position sensor is disposed at a fourth preset height within the housing, where the fourth preset height is close to the first preset height and is below the first preset height.

[0027] Optionally, the feeding mechanism includes:

[0028] Feeding mechanism body;

[0029] The auxiliary straightening component is arranged between the material discharging auxiliary mechanism and the material feeding mechanism main body, and is used for performing preliminary straightening on the pipe material.

[0030] According to a second aspect of the present invention, a method for controlling a pipe material discharge tensioning device for a chemical liquid supply system is provided, comprising the following steps:

[0031] When the first position sensor of the material discharging auxiliary mechanism detects that the current position height of the pipe material is lower than the first preset height, the material discharging mechanism is controlled to reduce the material discharging speed or stop discharging;

[0032] When the second position sensor of the material discharging auxiliary mechanism detects that the current position of the pipe material is higher than a second preset height, the material discharging mechanism is controlled to increase the material discharging speed.

[0033] Optionally, the control method for the pipe material discharge tensioning device for the chemical liquid supply system further includes the following steps:

[0034] When the third position sensor of the material discharging auxiliary mechanism detects that the current position height of the pipe material is at a third preset height, the material discharging mechanism is controlled to maintain the current material discharging speed or start discharging;

[0035] When the fourth position sensor of the material discharging auxiliary mechanism detects that the height of the current position of the pipe material is lower than a fourth preset height, the material discharging mechanism is controlled to stop discharging the material.

[0036] Optionally, the control method for the pipe material discharge tensioning device for the chemical liquid supply system further includes the following steps:

[0037] Obtaining the actual speeds of the unloading motor and the feeding motor, and obtaining the motor speed deviation by calculating the actual speed difference between the unloading motor and the feeding motor;

[0038] The motor speed deviation is received, the speed feedforward gain parameter of the unloading motor is automatically adjusted to improve the response speed of the unloading motor, and a control adjustment signal is generated according to the detection information of the position sensor and transmitted to the unloading motor.

[0039] The beneficial effect of the present invention is that the position sensor of the discharge auxiliary mechanism cooperates with the support part to detect the current height of the pipe material, and automatically adjusts the discharge speed of the discharge mechanism according to the current height of the pipe material to maintain the consistency of the discharge speed and the feeding speed, thereby ensuring that the tension of the pipe material is moderate.

[0040] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a first schematic structural diagram of a pipe material discharge tensioning device for a chemical liquid supply system according to an embodiment of the present invention;

[0042] Figure 2This is a second schematic structural diagram of a pipe material discharge tensioning device for a chemical liquid supply system according to an embodiment of the present invention;

[0043] Figure 3 This is a schematic structural diagram of a material discharge auxiliary component of a pipe material discharge tensioning device for a chemical liquid supply system according to one embodiment of the present invention;

[0044] Figure 4 A schematic cross-sectional view of a discharge assembly of a pipe discharge tensioning device for a chemical liquid supply system according to one embodiment of the present invention;

[0045] Figure 5 This is a schematic structural diagram of a feeding assembly of a pipe material discharge and tensioning device for a chemical liquid supply system according to one embodiment of the present invention;

[0046] Figure 6 This is a schematic flow chart of a control method for a pipe material discharge tensioning device for a chemical liquid supply system according to an embodiment of the present invention;

[0047] In the figure: 1-discharging mechanism, 11-discharging tray, 12-discharging motor, 13-anti-loosening pressure roller, 14-radial adjustment component, 141-support main board, 142-adjusting screw, 143-adjusting sleeve, 144-sleeve limit block, 145-adjusting nut, 146-movable connecting rod, 147-expansion part, 1471-movable support plate, 1472-limiting wheel, 1473-discharging support plate, 2-feeding mechanism, 21-feeding motor, 22-feeding mechanism body, 221-feeding box, 222-feeding hole, 223-fixed belt conveyor assembly, 224-adjustable belt conveyor assembly, 23-auxiliary straightening assembly, 231-lateral limiting roller, 232-longitudinal limiting roller, 3-discharging auxiliary mechanism, 31-shell, 32-support part, 321-support column, 322-floating plate, 323-floating roller, 33-position sensor, 331-first position sensor, 332-second position sensor, 333-third position sensor, 334-fourth position sensor. DETAILED DESCRIPTION

[0048] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0049] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0051] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0052] See Figure 1 and Figure 2 A preferred embodiment of the present application shows a pipe material discharge and tensioning device for a chemical liquid supply system, comprising a discharge mechanism 1, a feed mechanism 2, and a discharge auxiliary mechanism 3. The discharge mechanism 1 comprises a discharge tray 11 for winding the pipe material and a discharge motor 12. The feed mechanism 2 is provided with a feed motor 21 for conveying the pipe material to a subsequent station for straightening the pipe material. The discharge auxiliary mechanism 3 is spaced apart and disposed between the discharge mechanism 1 and the feed mechanism 2. The discharge auxiliary mechanism 3 comprises a housing 31 extending in the vertical direction, a support portion 32 for limiting and supporting the pipe material, and a position sensor 33 for detecting the current height of the pipe material. The support portion 32 is configured to reciprocate in the vertical direction with the pipe material to adjust the tension state of the pipe material.

[0053] The pipe material discharge tensioning device is configured to reduce or stop the discharge speed of the discharge mechanism 1 when the position sensor 33 detects that the current position height of the pipe material is lower than a first preset height; and to increase the discharge speed of the discharge mechanism 1 when the position sensor 33 detects that the current position height of the pipe material is higher than a second preset height.

[0054] According to the solution of an embodiment of the present invention, when pipe material is conveyed between the unloading mechanism 1 and the feeding mechanism 2, the pipe material is limited and supported by the support portion 32 of the unloading auxiliary mechanism 3. When the unloading speed exceeds the feeding speed, the pipe material discharged by the unloading mechanism 1 gradually accumulates at the unloading auxiliary mechanism 3, driving the support portion 32 vertically downward, reducing the tension. When the unloading speed is slower than the feeding speed, the feeding mechanism 2 pulls the pipe material at the unloading auxiliary mechanism 3, driving the support portion 32 vertically upward, increasing the tension. Therefore, to ensure that the tension of the pipe material is maintained within a certain moderate range and to prevent the pipe material from falling and accumulating on the ground due to insufficient tension or from excessive tension and excessive stretching due to excessive tension, a first preset height is set near the bottom of the housing 31 of the unloading auxiliary mechanism 3. When the pipe material reaches the first preset height, it will reach the accumulation limit. A second preset height is set near the top of the housing 31. When the pipe material reaches the second preset height, it will straighten. Position sensors 33 are respectively set at the first preset height and the second preset height to detect the current height of the pipe material. When the current height of the pipe material exceeds the preset range between the first preset height and the second preset height, the position sensor 33 will detect the pipe material. At this time, the discharge mechanism 1 will automatically adjust the discharge speed according to the different current heights of the pipe material to maintain the consistency of the discharge speed and the feeding speed, ensuring that the tension of the pipe material is moderate.

[0055] The following is a detailed description with specific embodiments:

[0056] The pipe material discharge tensioning device also includes a control system, which includes a control module. The control module is connected to the position sensor 33 and the discharge motor 12, and is used to generate a control adjustment signal based on the detection information of the position sensor 33 and transmit it to the discharge motor 12 to control the discharge motor 12 to adjust the discharge speed to ensure that the discharge speed and the feeding speed are unified.

[0057] While using the control module to adjust the unwinding speed, the inventors discovered that when the pipe material reaches the second preset height and is about to straighten, the control module receives detection information from the position sensor 33, generates a control signal, and transmits it to the unwinding motor 12 to increase the unwinding speed. However, due to the unwinding motor 12's slow response speed, it is unable to increase the unwinding speed in time to match the feed rate, potentially causing the pipe material to be overstretched and deformed. Similarly, when the pipe material reaches the first preset height and is about to reach the stacking limit, the unwinding motor 12 may be unable to reduce or stop the unwinding speed in time, causing the pipe material to continue to fall and potentially touch the ground.

[0058] To improve the response speed of the unloading motor 12 and adjust the unloading speed in a timely manner, the control system also includes a deviation calculation module. This deviation calculation module is connected to the unloading motor 12, the feeding motor 21, and the control module. It is used to obtain the actual speeds of the unloading motor 12 and the feeding motor 21 and calculate the actual speed difference between the unloading motor 12 and the feeding motor 21 to obtain the motor speed deviation. The control module automatically adjusts the speed feedforward gain parameter of the unloading motor 12 based on the motor speed deviation to improve the response speed of the unloading motor 12.

[0059] The speed feedforward gain parameter K of the unwinding motor 12 P It is the ratio of the motor speed deviation Δv to the cycle time T1 output by the current loop integrator of the unloading motor 12, and is obtained by the following formula:

[0060]

[0061] Traditional motors use their own encoders to detect motor speed and calculate their own motor speed deviation. Based on this motor speed deviation, the speed feedforward gain parameter is adjusted to regulate the motor's response speed. However, in the embodiments of the present invention, two motors, the unwinding motor 12 and the feeding motor 21, are configured to have the same preset speed, but their respective speed deviations are different. The unwinding speed is regulated based on the actual feeding speed of the feeding mechanism 2. Therefore, calculating the motor speed deviation based on the preset speed of the unwinding motor 12 and then adjusting the speed feedforward gain parameter of the unwinding motor 12 is inaccurate and cannot accurately adjust the unwinding motor 12's response speed based on the actual tension of the pipe material. Therefore, by obtaining the actual speeds of the unwinding motor 12 and the feeding motor 21 and calculating the actual speed difference between the unwinding motor 12 and the feeding motor 21 to obtain the motor speed deviation, the response speed of the unwinding motor 12 can be more accurately and adaptively adjusted, allowing the unwinding motor 12 to adjust its unwinding speed in a timely manner, ensuring that the unwinding mechanism 1 and the feeding mechanism 2 can resume coordinated operation in a timely manner.

[0062] See Figure 3 The support portion 32 includes a support column 321, a floating plate 322, and a floating roller 323. The support column 321 is disposed within the housing 31. The floating plate 322 is sleeved onto the support column 321, with its end extending horizontally outward through the housing 31. The floating roller 323 is located at the end of the floating plate 322 and provides positional support for the pipe. There are two floating rollers 323, and the pipe passes between them for positional support.

[0063] The position sensor 33 corresponds to the floating plate 322 that drives the floating roller 323 to move reciprocally in the longitudinal direction. The position sensor 33 determines the current height of the pipe by detecting the floating plate 322. The position sensor 33 includes a first position sensor 331, a second position sensor 332, a third position sensor 333, and a fourth position sensor 334. The first position sensor 331 is positioned at a first preset height within the housing 31, which is located at the bottom of the housing 31. The second position sensor 332 is positioned at a second preset height within the housing 31, which is located at the top of the housing 31. The third position sensor 333 is positioned at a third preset height within the housing 31, which is approximately below and close to the second preset height. The fourth position sensor 334 is positioned at a fourth preset height within the housing 31, which is approximately below and close to the first preset height.

[0064] When the pipe at the unloading auxiliary mechanism 3 reaches the third preset height, the tension in the pipe remains moderate, and the unloading and feeding process is relatively stable. The third position sensor 333 detects the floating plate 322 carrying the pipe, and the control module controls the unloading motor 12 to maintain the current unloading speed. When the pipe at the unloading auxiliary mechanism 3 reaches the fourth preset height, the pipe is about to touch the ground, and unloading must be stopped immediately to prevent friction damage. At this point, the fourth position sensor 334 detects the floating plate 322 carrying the pipe, and the control module controls the unloading motor 12 to stop unloading.

[0065] During the initial discharge of the unloading mechanism 1, the feeding mechanism 2 is initially inactive. When the discharged pipe material drives the floating roller 323 and the floating plate 322 to a first preset height, the unloading mechanism 1 stops. The feeding motor 21 is then activated. As the pipe material is conveyed by the feeding mechanism 2, the floating roller 323 and the floating plate 322 reach a third preset height, and the unloading mechanism 1 is restarted to begin unloading. Thereafter, the feeding mechanism 2 continues feeding, adjusting the unloading speed of the unloading mechanism 1 to align with the feeding speed.

[0066] See Figure 1 and Figure 4To ensure that the pipe material wound on the unwinding tray 11 remains taut and prevents unwinding during unwinding, the unwinding mechanism 1 also includes a pressure roller 13, a radial adjustment assembly 14, and a support frame. The pressure roller 13 is mounted on the support frame to compress the pipe material wound on the unwinding tray 11. The radial adjustment assembly 14 is located within the unwinding tray 11, which is mounted on the support frame. It is used to radially expand or contract the diameter of the unwinding tray 11 to accommodate and tension pipes of varying sizes. The radial adjustment assembly 14 includes a support main plate 141, an adjustment screw 142, an adjustment sleeve 143, a sleeve stop 144, an adjustment nut 145, a movable connecting rod 146, and an expansion portion 147. The support main plate 141 is mounted on the motor shaft of the unwinding motor 12, which is located on the support frame. The adjustment screw 142 is positioned at the center of the support main plate 141 and perpendicular to it. The adjustment sleeve is mounted on the adjustment screw 142 via an adjustment bushing disposed within the support main plate 141. The sleeve stopper is provided on the adjusting screw 142 and is used to limit the adjusting sleeve in the axial direction of the adjusting screw 142, preventing it from moving circumferentially along the adjusting screw 142. The expansion portion 147 is radially movable on the support main plate 141. There are multiple expansion portions 147, and the expansion portions 147 are evenly distributed along the circumference of the support main plate 141. The movable connecting rod 146 is provided between the expansion portion 147 and the adjusting sleeve, and two movable connecting rods 146 are provided between each expansion portion 147 and the adjusting sleeve. The adjusting nut 145 is sleeved on the end of the adjusting screw 142 and is used to push the adjusting sleeve to move axially along the adjusting screw 142, thereby pushing the expansion portion 147 to expand or contract radially along the support main plate 141.

[0067] Specifically, the expansion portion 147 includes a movable support plate 1471, limiting wheels 1472, and a material unloading support plate 1473. A set of limiting wheels 1472 is disposed between the movable support plate 1471 and the main support plate 141. The limiting wheels 1472 consist of two rows of limiting wheels 1472, each row consisting of two limiting wheels 1472. The two rows of limiting wheels 1472 are positioned on either side of the movable support plate 1471, with the two limiting wheels 1472 in the same row positioned on either side of the main support plate 141. The four limiting wheels 1472 in the same set are used to limit the movable support plate 1471 so that it can only move radially along the main support plate 141. The movable connecting rod 146 is disposed between the movable support plate 1471 and the adjustment sleeve. The material unloading support plate 1473 is disposed on and perpendicular to the movable support plate 1471, allowing the pipe to be wound thereon. A limiting plate is provided at the end of the material discharging support plate 1473 away from the supporting main plate 141 , which is used to limit the tube material wound on the material discharging support plate 1473 so that it will not slide off the material discharging support plate 1473 .

[0068] To maintain the tension on the discharge tray 11 for pipes of varying diameters, the diameter of the discharge tray 11 must be adjusted beforehand. First, rotate the adjustment nut 145 to push the adjustment sleeve along the axial direction of the adjustment screw 142. This movement of the adjustment sleeve drives one end of the movable connecting rod 146 to move synchronously. Because the limiting wheel 1472 is blocked by the support mainboard 141, the other end of the movable connecting rod 146 can only move the movable support plate 1471 and the discharge support plate 1473 radially along the support mainboard 141, expanding or contracting to adjust the diameter of the discharge tray 11. This allows for adaptability to pipes of varying diameters. For smaller pipes, the diameter of the discharge tray 11 can be reduced accordingly; for larger pipes, the diameter can be increased accordingly. After the pipe is evenly and tightly wound on the unwinding tray 11, the adjusting nut 145 is rotated again to push the adjusting sleeve along the axial direction of the adjusting screw 142 toward the support main plate 141, thereby pushing the expansion portion 147 to expand radially along the support main plate 141, further tightening the pipe to ensure the tension of the pipe. Finally, the anti-loosening pressure roller 13 is used to press on the coiled material to prevent it from loosening during the unwinding process.

[0069] See Figure 1 and Figure 5 The feeding mechanism 2 includes a feeding mechanism body 22. To feed pipes of varying diameters without causing deformation or compressing the pipes, which could affect subsequent heating and straightening, the feeding mechanism body 22 includes a feeding box 221, an inlet 222, a fixed belt conveyor assembly 223, and an adjustable belt conveyor assembly 224. The belt of the fixed belt conveyor assembly 223 contacts the bottom of the pipe that enters the feeding box 221 through the inlet 222. The feeding motor 21 is mounted on the fixed belt conveyor assembly 223. The adjustable belt conveyor assembly 224 is adjustable in height along the longitudinal direction.

[0070] For pipes of varying diameters, the pipe is first passed through feed hole 222 and placed on the belt of fixed belt conveyor assembly 223. The end of the pipe is then passed through feed box 221. The adjustment handle is then rotated to move the adjustable belt conveyor assembly 224 downward in the longitudinal direction, allowing the belt of adjustable belt conveyor assembly 224 to contact the upper portion of the pipe, completing the pipe feed installation. This installation process ensures smooth delivery of the pipe to the subsequent straightening station while preventing compression and deformation during the feeding process.

[0071] Because the pipe material is wound around the discharge tray 11, it will exhibit a certain degree of bending deformation after being discharged through the discharge mechanism 1 and the auxiliary discharge mechanism 3. To improve the straightening effect of the pipe material in the subsequent heating and straightening process, it is necessary to perform preliminary straightening before the pipe material is fed. Therefore, the feed mechanism 2 also includes an auxiliary straightening assembly 23. This auxiliary straightening assembly 23 is arranged in front of the feed mechanism body 22 and is used to receive the pipe material discharged from the auxiliary discharge mechanism 3 and perform preliminary straightening on the pipe material. The auxiliary straightening assembly 23 has two sets, each set of which includes a set of laterally adjustable lateral limit rollers 231 and a set of longitudinally adjustable longitudinal limit rollers 232. One set of lateral limit rollers 231 includes two lateral limit rollers 231, and the relative position between the two lateral limit rollers 231 is adjustable. The other set of longitudinal limit rollers 232 includes two longitudinal limit rollers 232, and the relative position between the two longitudinal limit rollers 232 is adjustable.

[0072] When installing pipes of different diameters, first pass the pipe through the gaps between the two transverse limiting rollers 231 and the two longitudinal limiting rollers 232 of the auxiliary straightening assembly 23. Then, manually adjust the relative positions of the two transverse limiting rollers 231 and the longitudinal limiting rollers 232 within the same group to clamp the pipe. Turn the adjustment handle to adjust the positions of each set of transverse limiting rollers 231 and longitudinal limiting rollers 232, respectively, so that the gaps between the transverse limiting rollers 231 and longitudinal limiting rollers 232 of the two sets of auxiliary straightening assemblies 23 are aligned horizontally and aligned with the feed hole 222. These adjustment steps provide preliminary straightening of the pipe and align the pipe with the feed hole 222, facilitating its entry into the feeding mechanism body 22 for transport.

[0073] See Figure 6 The embodiment of the present invention further provides a method for controlling a pipe material discharge tensioning device for a chemical liquid supply system, comprising the following steps:

[0074] S10: When the first position sensor 331 of the material discharging auxiliary mechanism 3 detects that the current position of the pipe material is lower than the first preset height, the material discharging mechanism 1 is controlled to reduce the material discharging speed or stop discharging;

[0075] S20: When the second position sensor 332 of the material discharging auxiliary mechanism 3 detects that the current position of the pipe material is higher than the second preset height, the material discharging mechanism 1 is controlled to increase the material discharging speed.

[0076] S30: When the third position sensor 333 of the material discharging auxiliary mechanism 3 detects that the current position of the pipe material is at a third preset height, the material discharging mechanism 1 is controlled to maintain the current material discharging speed or start discharging;

[0077] S40: When the fourth position sensor 334 of the material discharging auxiliary mechanism 3 detects that the current position of the pipe material is lower than the fourth preset height, the material discharging mechanism 1 is controlled to stop discharging the material.

[0078] The control method of the pipe material unwinding and tensioning device further comprises the following steps:

[0079] Obtain the actual speeds of the unloading motor 12 and the feeding motor 21, and calculate the motor speed deviation by calculating the actual speed difference between the unloading motor 12 and the feeding motor 21;

[0080] Receive the motor speed deviation, automatically adjust the speed feedforward gain parameter of the unloading motor 12 to improve the response speed of the unloading motor 12, and generate a control adjustment signal based on the detection information of the position sensor 33 and transmit it to the unloading motor 12.

[0081] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A pipe material discharge tensioning device for a chemical liquid supply system, characterized in that: include: A discharge mechanism, comprising a discharge tray for winding the tube material and a discharge motor; A feeding mechanism, provided with a feeding motor, for conveying the pipe material to a subsequent station for straightening the pipe material; a material discharge auxiliary mechanism, spaced apart and disposed between the material discharge mechanism and the material feeding mechanism, the material discharge auxiliary mechanism comprising a housing extending in a vertical direction, a support portion for limiting and supporting the pipe material, and a position sensor for detecting the height of the current position of the pipe material, the support portion being configured to reciprocate along the vertical direction with the pipe material to adjust the tension state of the pipe material; The pipe material unloading tensioning device is configured to reduce or stop the unloading speed of the unloading mechanism when the position sensor detects that the current height of the pipe material is lower than a first preset height; and increasing the discharging speed of the discharging mechanism when detecting that the current height of the pipe material is higher than a second preset height; The position sensor comprises: a first position sensor, disposed at a first preset height within the housing, wherein the first preset height is located at a lower position of the housing; a second position sensor, disposed at a second preset height within the housing, the second preset height being located at an upper position of the housing; a third position sensor disposed at a third preset height within the housing, the third preset height being close to the second preset height and below the second preset height; a fourth position sensor disposed at a fourth preset height within the housing, the fourth preset height being close to the first preset height and below the first preset height; The control method of the pipe material discharge tensioning device for the chemical liquid supply system comprises the following steps: When the first position sensor of the material discharging auxiliary mechanism detects that the current position height of the pipe material is lower than the first preset height, the material discharging mechanism is controlled to reduce the material discharging speed or stop discharging; When the second position sensor of the material discharging auxiliary mechanism detects that the current position of the pipe material is higher than a second preset height, the material discharging mechanism is controlled to increase the material discharging speed; When the third position sensor of the material discharging auxiliary mechanism detects that the current position height of the pipe material is at a third preset height, the material discharging mechanism is controlled to maintain the current material discharging speed or start discharging; When the fourth position sensor of the material discharging auxiliary mechanism detects that the current position of the pipe material is lower than a fourth preset height, the material discharging mechanism is controlled to stop discharging; Obtaining the actual speeds of the unloading motor and the feeding motor, and obtaining the motor speed deviation by calculating the actual speed difference between the unloading motor and the feeding motor; The motor speed deviation is received, the speed feedforward gain parameter of the unloading motor is automatically adjusted to improve the response speed of the unloading motor, and a control adjustment signal is generated according to the detection information of the position sensor and transmitted to the unloading motor.

2. The pipe material discharge tensioning device for a chemical liquid supply system according to claim 1, characterized in that: Also included is a control system, the control system comprising: a deviation calculation module, connected to the unloading motor and the feeding motor, for obtaining the actual speeds of the unloading motor and the feeding motor and calculating the actual speed difference between the unloading motor and the feeding motor to obtain the motor speed deviation; A control module is connected to the deviation calculation module, the position sensor and the unloading motor, and is used to automatically adjust the speed feedforward gain parameter of the unloading motor according to the motor speed deviation to improve the response speed of the unloading motor, and generate a control adjustment signal according to the detection information of the position sensor and transmit it to the unloading motor.

3. The pipe material discharge tensioning device for a chemical liquid supply system according to claim 2, characterized in that: The speed feedforward gain parameter K of the unwinding motor P is the ratio of the motor speed deviation Δv to the cycle time T1 output by the current loop integrator of the unwinding motor, and is obtained by the following formula:

4. The pipe material discharge tensioning device for a chemical liquid supply system according to claim 1, characterized in that: The discharging mechanism further comprises: An anti-loosening pressure roller is used to press the pipe material wound on the discharge tray; A radial adjustment component is arranged in the discharge tray and is used to radially expand or contract the diameter of the discharge tray to adapt to the pipes of different diameters and tighten them. The radial adjustment component includes a supporting main board, an adjusting screw, an adjusting nut, an adjusting sleeve sleeved on the adjusting screw, an expansion part with a limiting wheel and a movable connecting rod arranged between the expansion part and the adjusting sleeve. The expansion part is configured to push the adjusting sleeve to move axially along the adjusting screw through the adjusting nut to push the expansion part to expand or contract radially.

5. The pipe material discharge tensioning device for a chemical liquid supply system according to claim 1, characterized in that: The support portion includes: A support column is disposed in the housing; a floating plate, sleeved on the support column, with an end portion thereof passing through the shell and extending horizontally outward; The floating roller is arranged at the end of the floating plate and is used for limiting and supporting the pipe material.

6. The pipe material discharge tensioning device for a chemical liquid supply system according to claim 1, characterized in that: The feeding mechanism comprises: Feeding mechanism body; The auxiliary straightening component is arranged between the material discharging auxiliary mechanism and the main body of the material feeding mechanism, and is used for performing preliminary straightening on the pipe material.

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