Automatic glue scraping device on impregnation system of fiber winding machine and working method of automatic glue scraping device

Abstract

The invention provides an automatic glue scraping device on a fiber winding machine impregnation system and a working method thereof.The device comprises a glue scraping knife, a driving mechanism, a control system, a dial indicator support, a digital display dial indicator, a glue impregnation tank, a glue impregnation roller and fibers, and the glue scraping knife comprises a glue scraping knife shaft, a glue scraping knife supporting plate and a glue scraping knife blade; the two ends of the glue scraping cutter shaft are rotationally connected to the two side walls of the glue dipping tank, and the glue scraping cutter blade is mounted on the glue scraping cutter shaft through a glue scraping cutter supporting plate; the driving mechanism is mounted on the outer side of one side wall of the gum dipping tank, and the output end is connected with one end of the gum scraping cutter shaft; the digital display dial indicator is fixedly connected with the other end of the glue scraping cutter shaft and comprises a dial indicator measuring head, and the dial indicator measuring head is in contact with the outer surface of the glue dipping roller or the coaxial extension surface of the outer surface; the driving mechanism and the digital display dial indicator are connected with the control system. The control precision of the glue scraping gap is high, the real-time regulation and control of the glue scraping gap can be realized, the operation is more convenient, the measurement precision is higher, and the response speed is higher.

Description

Technical Field

[0001] The invention relates to the technical field of glue removal, and in particular to an automatic glue scraping device on a fiber winding machine impregnation system and a working method thereof. Background Art

[0002] The fiber winding machine is an important equipment for producing Type IV gas cylinders, among which the impregnation device is the key equipment of the wet winding process. In the wet winding process, the fiber is impregnated with glue in real time in the impregnation device, and is directly wound on the core mold after having a certain resin content. The working process of the fiber impregnation device is divided into two parts. One is that the rubber roller rotates along with the fiber moving in the resin container, and a resin film is formed on the surface of the rubber roller. The fiber is guided to the rubber roller and absorbs the resin from the resin film. The second is to use a scraping mechanism composed of parts such as a rubber roller, a scraper, and a dial indicator to ensure that the fiber is fully impregnated and the excess resin is stripped off. The existing scraping mechanism uses bolts to manually adjust the distance between the cylindrical surface of the impregnation roller and the tip of the scraper (referred to as the scraping gap). It is impossible to control and monitor the gap between the rubber roller in real time, and it cannot meet the needs of joint regulation with other process parameters. It has low accuracy and large errors, and is in urgent need of transformation. Summary of the invention

[0003] According to the technical problem raised above, an automatic glue scraping device and a working method thereof are provided for the impregnation system of a fiber winding machine. The present invention mainly adopts an automatically controlled glue scraping device to replace the original mechanical control device, and has a data collection and monitoring function, and can adjust the glue scraping gap according to the required fiber glue content, thereby controlling the fiber glue content.

[0004] The technical means adopted by the present invention are as follows:

[0005] An automatic glue scraping device on a fiber winding machine impregnation system comprises: a glue scraping knife, a driving mechanism, a control system, a dial indicator bracket, a digital dial indicator, a glue dipping tank, a glue dipping roller and fibers, wherein the glue dipping roller is installed on both side walls of the glue dipping tank, and the fibers are wound on the outer surface of the glue dipping roller;

[0006] The scraper is spaced apart from the dipping roller and comprises a scraper shaft, a scraper support plate and a scraper blade. The two ends of the scraper shaft are rotatably connected to the two side walls of the dipping tank, and the scraper blade is mounted on the scraper shaft through the scraper support plate.

[0007] The driving mechanism is installed on the outer side of one side wall of the dipping tank, and the output end of the driving mechanism is connected to one end of the scraper shaft to drive the scraper to rotate and adjust the scraping gap;

[0008] The digital dial gauge is fixedly connected to the other end of the scraper shaft and is located outside the other side wall of the dipping tank; the digital dial gauge has a data output function and includes a dial gauge measuring head, and the dial gauge measuring head is in contact with the outer surface of the dipping roller or the coaxial extension surface of the outer surface;

[0009] The driving mechanism and the digital dial indicator are both connected to the control system. The driving mechanism drives the scraper blade to rotate. The digital dial indicator rotates synchronously with the scraper blade. The scraper gap data measured by the digital dial indicator is transmitted to the control system.

[0010] Furthermore, the driving mechanism includes a coupling, a stepper motor and a motor bracket, the stepper motor is installed on the motor bracket, the motor bracket is installed on the outside of a side wall of the dipping tank, and the output shaft of the stepper motor is connected to one end of the scraper shaft through the coupling.

[0011] Furthermore, the control system includes a motor driver, a PLC controller and a signal line, the digital dial indicator is connected to the PLC controller via the signal line, the PLC controller is connected to the motor driver, and the motor driver is connected to the stepper motor of the drive mechanism; the motor driver is used to control the rotation of the stepper motor, and the control signal of the motor driver is provided by the PLC controller; the PLC controller is used to receive the data value measured by the digital dial indicator and calculate the scraping gap; the PLC controller is set with a preset value of the scraping gap and a preset value of the error.

[0012] Furthermore, when adjusting the gap between the rubber rollers, the stepper motor rotates forward / reverse to drive the scraper to rotate, so that the scraper blade approaches / moves away from the dipping roller; before the impregnation device works, the stepper motor rotates to the required scraper gap and then stops rotating; when the impregnation device is working, when the measured error of the scraper gap is greater than the preset error, a signal is sent to the motor driver, the stepper motor is started, and the scraper gap is adjusted until the actual error is less than or equal to the preset error setting value, and the stepper motor is controlled to stop, thereby realizing the control of the fiber glue content.

[0013] Furthermore, it also includes a concentric plate, which is fixedly mounted on the side wall of the dipping tank on the same side as the digital dial indicator. The concentric plate is an arc-shaped plate, and the outer surface of the concentric plate is coaxial with the cylindrical surface of the dipping roller, wherein the center and radius of the outer surface of the concentric plate are the same as those of the dipping roller; when adjusting the scraping gap, the dial indicator measuring head is always in contact with the outer surface of the concentric plate.

[0014] Furthermore, it also includes a dial indicator bracket, which is "L"-shaped, and the digital dial indicator is installed on the dial indicator bracket. The dial indicator bracket is fixedly connected to the other end of the scraper shaft by bolts.

[0015] Furthermore, the digital dial indicator also includes a main body structure, a dial indicator measuring rod with a telescopic function and a dial indicator earring, the dial indicator measuring rod is installed on the main body structure, the dial indicator measuring head is installed at the head end of the dial indicator measuring rod, the axis of the dial indicator measuring rod and the upper surface of the scraper blade are in the same plane, and the scraper gap value is calculated by the telescopic value of the dial indicator measuring rod; the dial indicator earring is arranged on the back of the main body structure and is fixedly connected to the dial indicator bracket by bolts.

[0016] The present invention also provides a working method of an automatic scraping device on an impregnation system of a filament winding machine, comprising the following steps:

[0017] Step 1, start the stepper motor, make the tip of the scraper contact with the cylindrical surface of the dipping roller, at this time the dial gauge measuring head contacts with the concentric plate, the dial gauge measuring rod is in a compressed state, and the output value is set to l1;

[0018] Step 2: The stepper motor rotates to drive the scraper, the digital dial indicator and the dial indicator bracket to rotate together. When the stepper motor stops rotating, the dial indicator measuring head contacts the concentric plate, and the dial indicator measuring rod is in a compressed state. Assume that the output value is l2; then the measurement value of the digital dial indicator can be obtained at this time l=l1-l2;

[0019] Step 3: The digital display dial indicator continuously outputs the value l during the fiber winding process to calculate the scraping gap value x. When the error between the scraping gap value and the preset value is greater than the preset error, the PLC controller sends a command to control the stepper motor to rotate forward / reverse to adjust the scraping gap until the scraping gap value is within the preset error range of the preset value.

[0020] Furthermore, the scraping gap value x is calculated from the dial gauge measurement value l, satisfying the following formula:

[0021]

[0022] In the formula, s 1 is the line segment connecting the center of the dipping roller and the center of the scraper shaft, s 2 is the line segment connecting the center of the scraper blade axis and the tip of the scraper blade, and a is the line segment s 1 and line segment s 2 b is the angle between the line segment x of the scraping gap value and the line segment l of the dial gauge measurement value, and c is the angle between the line segment s 2 The angle between the upper surface of the scraper blade, angle a, angle b and line segment length x are unknown quantities, and the line segment length s 1 、s 2 , R, l, angle c are known quantities; among them, s 1 、s 2, R, c are constants; l is measured by the digital dial indicator and changes with the position of the scraper during the adjustment of the gap between the rubber rollers; when b=0°, it is a critical state, at which time x=l, that is, the scraper gap value is the value measured by the digital dial indicator.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. The present invention has high control accuracy for the scraping gap and can realize real-time regulation of the scraping gap. Compared with the existing manual regulation method, the automatic control method of the present invention is more convenient to operate, has higher measurement accuracy and faster response speed.

[0025] 2. The present invention can automatically adjust and measure the scraping gap according to requirements, and can adjust and control the scraping gap value according to different production needs during the operation of the impregnation device. Compared with the existing manual control method, there is no need to stop the machine for operation.

[0026] 3. The present invention can monitor the scraping gap in real time according to production requirements. The returned scraping gap measurement value is stored in the PLC and used to calculate the error between the scraping gap measurement value and the preset value. When the error is greater than the preset error, the PLC issues an instruction to adjust the scraping gap.

[0027] Based on the above reasons, the present invention can be widely promoted in the fields of fiber winding machines and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 It is a schematic structural diagram of the automatic glue scraping device on the impregnation system of the fiber winding machine of the present invention.

[0030] Figure 2 It is a schematic diagram of the structure of the scraper blade of the present invention.

[0031] Figure 3 It is a structural schematic diagram of the digital display dial indicator of the present invention.

[0032] Figure 4 It is a schematic diagram of calculating the scraping gap value when the scraper blade of the present invention is in different positions.

[0033] Figure 5 This is a partial enlarged diagram of the calculation schematic diagram of the scraping gap value of the present invention.

[0034] Figure 6This is a partial enlarged diagram of another calculation schematic diagram of the scraping gap value of the present invention.

[0035] In the figure: 1. Coupling; 2. Stepper motor; 3. Motor bracket; 4. Motor driver; 5. PLC controller; 6. Signal line; 7. Glue scraper; 8. Dial indicator bracket; 9. Digital dial indicator; 10. Concentric plate; 11. Glue dipping tank; 12. Glue dipping roller; 13. Fiber; 701. Glue scraper shaft; 702. Glue scraper support plate; 703. Glue scraper blade; 901. Dial indicator measuring head; 902. Dial indicator measuring rod; 903. Dial indicator earring. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0039] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0040] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0041] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0042] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0043] Example 1

[0044] The present invention provides an automatic glue scraping device on the impregnation system of a fiber winding machine, such as Figure 1 As shown, it includes a stepper motor 2, a motor bracket 3, a motor driver 4, a coupling 1, a PLC controller 5, a signal line 6, a scraper 7, a dial indicator bracket 8, a digital dial indicator 9, a concentric plate 10, a dipping tank 11, a dipping roller 12, and a fiber 13. The scraper device is provided with a stepper motor 2 and a motor driver 4 at one end of the scraper 7, and a digital dial indicator 9 with a data output function is provided at the other end, and the scraping gap is automatically controlled by the PLC controller 5. The scraper device has the function of real-time monitoring and adjustment of the scraping gap, and does not need to stop the machine for operation. Compared with the existing manual control method, the automatic control method of the present invention is more convenient to operate, has higher measurement accuracy, and faster response speed.

[0045] Glue scraper 7 Figure 2 As shown, it includes a scraper shaft 701, a scraper support plate 702 and a scraper blade 703.

[0046] Digital dial indicator 9 Figure 3 As shown, it includes a dial indicator measuring head 901, a dial indicator measuring rod 902 and a dial indicator earring 903.

[0047] The stepper motor 2 and its motor bracket 3 are installed on the outer side of a side wall of the dipping tank 11, and are connected to one end of the scraper shaft 701 through a coupling 1, driving the scraper 7 to rotate and adjust the scraping gap. The motor driver 4 controls the stepper motor 2 to rotate through a certain angle, and the control signal of the motor driver 4 is provided by the PLC controller 5; when adjusting the gap between the rubber rollers, the stepper motor 2 rotates forward / reverse to drive the scraper 7 to rotate, so that the scraper blade 703 is close to / away from the dipping roller 12; before the dipping device works, the stepper motor 2 rotates to the required scraping gap and then stops rotating. When the dipping device is working, when the scraping gap measurement error is greater than the preset error, the stepper motor 2 starts and adjusts the scraping gap to the set value.

[0048] The digital dial indicator 9 and its dial indicator bracket 8 are installed on the outside of the other side wall of the dipping tank 11, and are fixedly connected to the other end of the scraper shaft 701 by bolts; the dial indicator bracket 8 is "L"-shaped; there is an earring 903 on the back of the digital dial indicator 9, which is fixedly connected to the dial indicator bracket 8 by bolts; the axis of the dial indicator measuring rod 902 is in the same plane as the upper surface of the scraper blade 703; when the scraper 7 rotates, the digital dial indicator 9 and its dial indicator bracket 8 rotate together with the scraper 7; the data measured by the digital dial indicator 9 is transmitted to the PLC controller 5 through the signal line 6, and the model of the PLC controller 5 is S7-1200.

[0049] The concentric plate 10 is fixedly mounted on the side wall of the dipping tank 11 on the same side as the digital dial indicator 9. The concentric plate 10 is an arc-shaped plate, and the center and radius of the outer surface of the concentric plate 10 are the same as those of the dipping roller 12. When adjusting the scraping gap, the dial indicator measuring head 901 is always in contact with the outer surface of the concentric plate 10.

[0050] The PLC controller 5 receives the data value measured by the digital display dial indicator 9 and calculates the scraping gap; the preset value of the scraping gap and the preset value of the error are set in the PLC controller 5. When the actual error is greater than the preset error, a signal is sent to the motor driver 4 to control the stepper motor 2 to rotate and adjust the scraping gap until the actual error is less than the preset error, and the stepper motor 2 is controlled to stop, thereby realizing the control of the glue content of the fiber 13.

[0051] During assembly, the present invention needs to pay attention to the coaxiality between the outer surface of the concentric plate 10 and the cylindrical surface of the dipping roller 12, in order to ensure that in terms of geometric structure, the outer surface of the concentric plate 10 can equivalently replace the cylindrical surface of the dipping roller 12 outside the dipping tank 11; the axis of the dial indicator measuring rod 902 and the upper surface of the scraper blade 703 are located in the same plane, in order to ensure that the dial indicator measuring head 901 can equivalently replace the tip of the scraper blade 7; the present invention can calculate the scraping gap value by the telescopic value of the dial indicator measuring rod 902.

[0052] Example 2

[0053] The present invention also provides a working method of an automatic scraping device on an impregnation system of a filament winding machine, and the specific working process is as follows:

[0054] Step 1, start the stepper motor 2, so that the tip of the scraper 7 contacts the cylindrical surface of the dipping roller 12, at this time, the dial gauge measuring head 901 contacts the concentric plate 10, the dial gauge measuring rod 902 is in a compressed state, and the output value is set to l1;

[0055] Step 2, the stepper motor 2 rotates to drive the scraper 7, the digital dial indicator 9 and the dial indicator bracket 8 to rotate together. When the stepper motor 2 stops rotating, the dial indicator measuring head 901 contacts the concentric plate 10, and the dial indicator measuring rod 902 is in a compressed state. Assuming the output value is l2; then the dial indicator measurement value l=l1-l2 can be obtained at this time;

[0056] Step 3, the digital display dial indicator 9 continuously outputs the l value during the fiber winding process, and calculates the scraping gap value through the program (existing program). When the error between the value and the preset value is greater than the preset error, the PLC controller 5 sends an instruction to control the stepper motor 2 to rotate forward / reverse, and adjust the scraping gap until the scraping gap measurement value is within the preset error range of the preset value.

[0057] After receiving the signal from the digital dial indicator 9, the PLC controller 5 in the present invention calculates the scraping gap value, such as Figures 4 to 6As shown, O1 is the center of the scraper 7, and the line segments AD1, BD2, and CD3 represent different positions of the upper surface of the scraper blade 703 during the process of adjusting the scraping gap. Among them, when the upper surface of the scraper blade 703 is at AD1, the scraper 7 is in contact with the surface of the dipping roller 12, and the scraping gap is 0 mm. O2 is the center of the dipping roller 12. A, B', and C' represent the contact points between the dial indicator measuring head 901 and the surface of the dipping roller 12 during the process of adjusting the scraping gap. The data measured by the digital dial indicator 9 is actually the length of the line segment BB' / CC'. Connect the center O2 of the dipping roller 12 with the positions B and C of the tip of the scraper 7 to obtain the intersection points B", C" with the surface of the dipping roller 12. The length of the line segment BB" / CC" is the required scraping gap. Assume that the scraping gap value (the length of line segment BB" / CC") is x, the dial indicator measurement value (the length of line segment BB' / CC') is l, the angle between line segment BB" / CC" and line segment BB' / CC' is b, the radius of the dipping roller 12 is R, and the distance from the center O2 of the dipping roller 12 to the center O1 of the scraping blade shaft 701 (the length of line segment O1O2) is s 1 The distance from the center O1 of the scraper blade shaft 701 to the tip B of the scraper blade 7 is s. 2 , the angle between line segment O1O2 and line segment O1B is a, and the angle between line segment O1B and line segment BD2 is c. Therefore, the scraping gap value x can be calculated from the dial indicator measurement value l:

[0058]

[0059] In the formula, angle a, angle b and line segment length x are unknown quantities, and line segment length s 1 、s 2 , R, l, and angle c are known quantities. 1 、s 2 , R, c are determined by the mechanical structure of the scraper device and are constants. l is measured by a dial indicator and changes with the position of the scraper blade during the process of adjusting the gap between the rubber rollers. When b = 0°, it is a critical state, at which x = l, that is, the scraper gap value is the value measured by the digital dial indicator.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic glue scraping device on the impregnation system of a filament winding machine, characterized in that: include: A glue scraper (7), a driving mechanism, a control system, a dial indicator bracket (8), a digital dial indicator (9), a glue dipping tank (11), a glue dipping roller (12) and a fiber (13), wherein the glue dipping roller (12) is mounted on two side walls of the glue dipping tank (11), and the fiber (13) is wound around the outer surface of the glue dipping roller (12); The scraper (7) is spaced apart from the dipping roller (12), and comprises a scraper shaft (701), a scraper support plate (702) and a scraper blade (703); the two ends of the scraper shaft (701) are rotatably connected to the two side walls of the dipping tank (11); the scraper blade (703) is mounted on the scraper shaft (701) via the scraper support plate (702); The driving mechanism is installed on the outer side of a side wall of the dipping tank (11), and the output end of the driving mechanism is connected to one end of the scraper shaft (701) to drive the scraper (7) to rotate and adjust the scraping gap; The digital dial gauge (9) is fixedly connected to the other end of the scraper shaft (701) and is located outside the other side wall of the dipping tank (11); the digital dial gauge (9) has a data output function and comprises a dial gauge measuring head (901), and the dial gauge measuring head (901) is in contact with the outer surface of the dipping roller (12) or the coaxial extension surface of the outer surface; The driving mechanism and the digital dial indicator (9) are both connected to a control system. The driving mechanism drives the scraper blade (7) to rotate. The digital dial indicator (9) rotates synchronously with the scraper blade (7). The scraper gap data measured by the digital dial indicator (9) is transmitted to the control system.

2. The automatic glue scraping device on the impregnation system of the filament winding machine according to claim 1 is characterized in that: The driving mechanism comprises a coupling (1), a stepper motor (2) and a motor bracket (3); the stepper motor (2) is mounted on the motor bracket (3); the motor bracket (3) is mounted on the outside of a side wall of the glue dipping tank (11); and the output shaft of the stepper motor (2) is connected to one end of a glue scraper shaft (701) via the coupling (1).

3. The automatic glue scraping device on the impregnation system of the filament winding machine according to claim 1 is characterized in that: The control system comprises a motor driver (4), a PLC controller (5) and a signal line (6); the digital dial gauge (9) is connected to the PLC controller (5) via the signal line (6); the PLC controller (5) is connected to the motor driver (4); the motor driver (4) is connected to the stepping motor (2) of the driving mechanism; the motor driver (4) is used to control the rotation of the stepping motor (2); the control signal of the motor driver (4) is provided by the PLC controller (5); the PLC controller (5) is used to receive the data value measured by the digital dial gauge (9) and calculate the scraping gap; the PLC controller (5) is set with a preset value of the scraping gap and a preset value of the error.

4. The automatic glue scraping device on the impregnation system of the filament winding machine according to claim 3 is characterized in that: When adjusting the gap between the rubber rollers, the stepper motor (2) rotates forward / reverse to drive the scraper (7) to rotate, so that the scraper blade (703) approaches / moves away from the dipping roller (12); before the dipping device works, the stepper motor (2) rotates to the required scraper gap and then stops rotating; when the dipping device works, when the scraper gap measurement error is greater than a preset error, a signal is sent to the motor driver (4), the stepper motor (2) is started, and the scraper gap is adjusted until the actual error is less than or equal to the preset error setting value, and the stepper motor (2) is controlled to stop rotating, thereby realizing the control of the glue content of the fiber (13).

5. The automatic glue scraping device on the impregnation system of the filament winding machine according to claim 1 is characterized in that: It also includes a concentric plate (10), which is fixedly mounted on the side wall of the dipping tank (11) on the same side as the digital dial indicator (9), and is an arc-shaped plate. The outer surface of the concentric plate (10) is coaxial with the cylindrical surface of the dipping roller (12), wherein the center and radius of the outer surface of the concentric plate (10) are the same as those of the dipping roller (12); when adjusting the scraping gap, the dial indicator measuring head (901) is always in contact with the outer surface of the concentric plate (10).

6. The automatic glue scraping device on the impregnation system of the filament winding machine according to claim 1, characterized in that: It also includes a dial indicator bracket (8), the dial indicator bracket (8) is "L"-shaped, the digital dial indicator (9) is mounted on the dial indicator bracket (8), and the dial indicator bracket (8) is fixedly connected to the other end of the scraper shaft (701) by bolts.

7. The automatic glue scraping device on the impregnation system of the filament winding machine according to claim 6, characterized in that: The digital display dial gauge (9) further comprises a main body structure, a dial gauge measuring rod (902) with a telescopic function, and a dial gauge earring (903); the dial gauge measuring rod (902) is mounted on the main body structure; the dial gauge measuring head (901) is mounted on the head end of the dial gauge measuring rod (902); the axis of the dial gauge measuring rod (902) and the upper surface of the scraper blade (703) are in the same plane; the scraper gap value is calculated by the telescopic value of the dial gauge measuring rod (902); and the dial gauge earring (903) is arranged on the back of the main body structure and is fixedly connected to the dial gauge bracket (8) by bolts.

8. A method for operating the automatic scraping device on the impregnation system of a filament winding machine according to any one of claims 1 to 7, characterized in that: The steps include: Step 1, start the stepper motor (2), so that the tip of the scraper (7) contacts the cylindrical surface of the dipping roller (12), at which time the dial gauge measuring head (901) contacts the concentric plate (10), the dial gauge measuring rod (902) is in a compressed state, and the output value is set to l1; Step 2, the stepper motor (2) rotates to drive the scraper (7), the digital dial indicator (9) and the dial indicator bracket (8) to rotate together. When the stepper motor (2) stops rotating, the dial indicator measuring head (901) contacts the concentric plate (10), and the dial indicator measuring rod (902) is in a compressed state. Assuming the output value is l2, the measured value l of the digital dial indicator (9) can be obtained at this time as l=l1-l2; Step 3, the digital display dial indicator (9) continuously outputs the value l during the fiber winding process to calculate the scraping gap value x. When the error between the scraping gap value and the preset value is greater than the preset error, the PLC controller (5) sends a command to control the stepper motor (2) to rotate forward / reverse to adjust the scraping gap until the scraping gap value is within the preset error range of the preset value.

9. The working method of the automatic glue scraping device on the impregnation system of the filament winding machine according to claim 8, characterized in that: The scraping gap value x is calculated from the dial indicator measurement value l and satisfies the following formula: Wherein, s1 is the line segment connecting the center of the glue dipping roller and the center of the glue scraper shaft, s2 is the line segment connecting the center of the glue scraper shaft and the tip of the glue scraper, a is the angle between line segment s1 and line segment s2, b is the angle between line segment x of the glue scraping gap value and line segment l of the dial indicator measurement value, c is the angle between line segment s2 and the upper surface of the glue scraping blade, angle a, angle b and line segment length x are unknown quantities, line segment length s1, s2, R, l, angle c are known quantities; among them, s1, s2, R, c are constants; l is measured by the digital dial indicator, and changes with the position of the glue scraper during the process of adjusting the gap between the rubber rollers; when b = 0°, it is a critical state, at which time x = l, that is, the glue scraping gap value is the value measured by the digital dial indicator.

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