An automatic code spraying device for wind power blade pieces

Abstract

The present application relates to the technical field of glass fiber cloth forming, in particular to an automatic code spraying device for wind power blade cutting piece, comprising a unwinding unit and a cutting unit; the unwinding unit comprises a unwinding mechanism, a code spraying mechanism and a constant tension control mechanism; one end of the code spraying mechanism is arranged on the base, and the other end is arranged in the accommodating space, so that the code spraying head is arranged obliquely downward and parallel to the glass fiber cloth; the unwinding mechanism is driven by a computer-controlled servo motor, the traction speed is controlled according to the cutting unit and the constant tension control mechanism, the unwinding speed is controlled to be synchronous with the traction speed, and the unwinding tension of the glass fiber cloth is constant; by arranging the code spraying mechanism in the unwinding unit and before the constant tension control mechanism, the code spraying mechanism and the unwinding mechanism are combined into one, the path of the traction fabric is shortened, and the additional resistance of the code spraying mechanism to the traction system is effectively avoided, so that the stability of the traction force of the cutting machine is ensured, and the reliability and stability of the system are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass fiber cloth forming, and particularly relates to an automatic code spraying device for wind power blade cutting pieces. BACKGROUND

[0002] Wind power blade pre-forming is composed of many pre-forming blocks, and the pre-forming blocks are composed of different cutting pieces, which are laid flat in a certain order, at a certain interval and at a specified coordinate and are stacked layer by layer. In actual production, one wind power blade is composed of about 900 cutting pieces of different shapes and sizes. At present, the wind power blade cutting pieces are automatically cut, and the codes are manually written / sprayed. Since the automatic cutting machine has a high cutting speed and can cut 4 layers of glass fabric at a time, at least 2 code writing workers are needed for one cutting machine. Due to the existence of more than 900 codes, it is inevitable to make mistakes. Once an error occurs, it will seriously affect the subsequent production process. Therefore, the online automatic code spraying technology is imperative.

[0003] In the prior art, in order to solve the above problems, a high-efficiency glass fabric inkjet marking device is disclosed in the Chinese Utility Model Patent with the authorization announcement number CN211031738U on July 17, 2020, as shown in the drawings, which comprises a unwinding unit 1, a cutting unit 2 and a code spraying unit 3 arranged between the unwinding unit 1 and the cutting unit 2, so as to realize automatic inkjet marking of the glass fabric. Figure 1

[0004] However, in the above scheme, since the code spraying unit 3 is placed between the unwinding unit 1 and the cutting unit 2, the code spraying unit 3 is an independent device, which is a subsequent process of the unwinding unit 1 station. Each layer of fabric needs to pass through the upper and lower passive first and second guide rollers of the code spraying unit 3, which additionally increases the resistance of the cutting unit 2 cutting machine. For example, the additional resistance of the code spraying unit 3 is 2 Kg; the pulling force of each unwinding device of the unwinding unit 1 is 2 Kg, and the total pulling force of 4 unwinding devices is 8 Kg; the traction force of the new cutting unit 2 cutting machine is 11 Kg. Therefore, the traction force 11 Kg>pulling force 8 Kg+additional resistance 2 Kg, so the new cutting machine has no problem. However, in the actual production process, the cutting machine of the cutting unit 2 adopts vacuum adsorption to generate a pulling force. After a period of use, the vacuum adsorption belt hole will be blocked by fiber powder, and the vacuum adsorption traction force will decrease. Assuming that the traction force decreases from 11 Kg to 9.5 Kg, the cutting machine of the cutting unit will not be able to pull the fabric of the constant tension unwinding device after a period of production, resulting in equipment downtime and affecting the stability of the subsequent process. This problem is particularly prominent in long-term operation and needs to be improved and optimized.

[0005] ​The information disclosed in this Background section is only for the purpose of enhancing the understanding of the general background of the application and does not necessarily constitute an acknowledgement or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art. SUMMARY

[0006] The present application provides an automatic code spraying device for wind power blade cutting piece, thereby effectively solving the problems pointed out in the background.

[0007] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is:

[0008] An automatic code spraying device for wind power blade cutting piece, comprising: a plurality of unwinding units and a cutting unit arranged in sequence;

[0009] The cutting unit is used for cutting the multi-layer glass fiber cloth.

[0010] Each unwinding unit comprises an unwinding mechanism, a code spraying mechanism and a constant tension control mechanism, the unwinding mechanism is used for unwinding the glass fiber cloth, and the code spraying mechanism is used for code spraying identification on the glass fiber cloth.

[0011] The unwinding mechanism comprises a base and an unwinding shaft arranged on the base, and a plurality of directional wheels, the plurality of directional wheels guide the glass fiber cloth to surround a containing space, one end of the code spraying mechanism is arranged on the base, and the other end is arranged in the containing space, the code spraying mechanism is provided with a code spraying head, so that the code spraying head is inclined downward and arranged parallel to the glass fiber cloth on the end surface of the code spraying head.

[0012] The constant tension control mechanism is arranged on the base and is used for controlling the constant tension of the glass fiber cloth during unwinding, and the code spraying mechanism is arranged before the constant tension control mechanism along the path direction of the glass fiber cloth unwinding.

[0013] The unwinding mechanism is driven by a computer-controlled servo motor, the traction speed is controlled according to the cutting unit and the constant tension control mechanism, the cloth unwinding speed is controlled to be synchronized with the traction speed, and the cloth unwinding tension is constant.

[0014] Further, the unwinding mechanism further comprises a first directional wheel, a second directional wheel, a third directional wheel and a fourth directional wheel arranged in sequence along the unwinding direction of the glass fiber cloth; the unwinding shaft, the first directional wheel, the second directional wheel and the third directional wheel surround the containing space, and the code spraying mechanism is arranged in the containing space; the end surface of the code spraying head is parallel to the glass fiber cloth between the second directional wheel and the third directional wheel, and the fourth directional wheel guides the glass fiber cloth to the cutting machine.

[0015] Further, the inclination angle of the code spraying head is 46° to 50°.

[0016] Furthermore, the coding mechanism further includes a bracket and an inkjet assembly;

[0017] One end of the bracket is arranged on the base, and the other end is provided with the inkjet assembly;

[0018] The inkjet assembly includes a frame, a first baffle, an ink cartridge and a driving member; the frame is arranged on the bracket, the first baffle is arranged in the frame and is slidably connected to the frame, a plurality of through slots are sequentially provided on the first baffle, a plurality of ink cartridges are arranged on the first baffle, and the ink jet terminals of the ink cartridges pass through the through slots, and the driving member drives the first baffle to reciprocate along the width direction of the glass fiber cloth.

[0019] Furthermore, the coding mechanism further includes a second baffle, which is arranged parallel to the first baffle, and the first baffle and the second baffle are respectively arranged on both sides of the fiberglass cloth.

[0020] Furthermore, a gap between the first baffle and the second baffle is 3 mm to 6 mm.

[0021] Furthermore, the inkjet coding mechanism also includes an adjusting foot, a fixed shaft is provided on the back of the second baffle, the two adjusting feet are in a V-shaped structure, one end is hinged to the bracket, and the other end is connected to the fixed shaft, and a tension spring is provided between the adjusting foot and the bracket, and a limit member is provided on the bracket, which drives the second baffle away from or close to the first baffle by pulling the adjusting foot.

[0022] Furthermore, a baffle is provided on the side wall of the spray terminal, and the baffle is set 1mm to 2mm higher than the end surface of the spray terminal.

[0023] Furthermore, the constant tension control mechanism includes a constant tension cylinder, a tension control balance wheel, a tension rod, an angle sensor, a first limiter and a second limiter;

[0024] The two tension rods are arranged on both sides of the base and are hinged to the base. The angle sensor is arranged at the hinge to detect the angle of the tension rod; one end of the constant tension cylinder is hinged to the base, and the other end is hinged to one end of the tension rod. The tension control balance wheel is arranged at the other end of the tension rod, and the tension control balance wheel is arranged between the third directional wheel and the fourth directional wheel; the first limit member and the second limit member are arranged on the base on both sides of the tension rod to limit the maximum angle and the minimum angle of the tension rod. The angle sensor is linked to the computer-controlled servo motor of the unwinding mechanism.

[0025] Furthermore, it also includes a frame and a correction mechanism, wherein the correction mechanism includes a correction photoelectric sensor, a correction motor and a correction guide rail;

[0026] The deviation correcting guide rail is arranged on the frame along the width direction of the glass fiber cloth, the base is slidably arranged on the deviation correcting guide rail, the deviation correcting photoelectric sensor is arranged on the frame and located outside the fiber cloth, and is used for correcting the position in the width direction of the fiber cloth, and the deviation correcting motor is used for driving the base to move on the deviation correcting guide rail.

[0027] The technical scheme can realize the following technical effects:

[0028] By arranging the code spraying mechanism into the unwinding unit and arranging the code spraying mechanism before the constant tension control mechanism, the code spraying mechanism and the unwinding mechanism are combined, the path of the traction fabric is shortened, the additional resistance of the code spraying mechanism to the traction system is effectively avoided, the stability of the traction force of the cutting machine is ensured, the risk of production interruption or equipment downtime is effectively reduced, and the reliability and stability of the system are improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 Structure schematic view of high-efficiency glass fiber cloth inkjet marking device;

[0031] Figure 2 Structure schematic view of automatic code spraying device for wind power blade cutting piece;

[0032] Figure 3 Structure schematic view of unwinding unit;

[0033] Figure 4 Structure schematic view of code spraying mechanism (without second baffle);

[0034] Figure 5 Structure schematic view of code spraying mechanism from another angle (without second baffle);

[0035] Figure 6 Structure schematic view of code spraying mechanism (including second baffle);

[0036] Figure 7 Position schematic view of first baffle, second baffle and glass fiber cloth;

[0037] Figure 8 Position schematic view of code spraying head, baffle, second baffle and glass fiber cloth;

[0038] Figure 9 Fig. 1 is a schematic view of the position of the glass fiber cloth and the deviation correction mechanism;

[0039] Figure 10 Fig. 2 is a schematic view of the transverse code spraying.

[0040] Fig. 1 is a schematic view of the position of the glass fiber cloth and the deviation correction mechanism;

[0041] 01, glass fiber cloth. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the following terms are defined as follows:

[0044] As shown in Fig. 1, an automatic code spraying device for wind power blade cutting piece includes a plurality of unwinding units 1 and a cutting unit 2 arranged in sequence. Figures 2 to 10

[0045] The cutting unit 2 is used to cut the multi-layer glass fiber cloth 01.

[0046] Referring to Fig. 1, each unwinding unit 1 includes an unwinding mechanism 11, a code spraying mechanism 12, and a constant tension control mechanism 13. Figure 3 The unwinding mechanism 11 is used to unwind the glass fiber cloth 01, and the code spraying mechanism 12 is used to spray code identification on the glass fiber cloth 01.

[0047] ​The unwinding mechanism 11 comprises a base 111, an unwinding shaft 112 arranged on the base 111, and a plurality of guide wheels for guiding the glass fiber cloth 01 to surround a containing space 113. The inkjet mechanism 12 is arranged on one end of the base 111 and the other end in the containing space 113. The inkjet mechanism 12 is provided with an inkjet head 124a, which is arranged obliquely downward and parallel to the end surface of the glass fiber cloth 01.

[0048] The constant tension control mechanism 13 is arranged on the base 111 to control the constant tension of the glass fiber cloth 01 during unwinding. The inkjet mechanism 12 is arranged before the constant tension control mechanism 13 along the path direction of the unwinding of the glass fiber cloth 01.

[0049] The unwinding mechanism 11 is driven by a computer-controlled servo motor. The cutting unit 2 and the constant tension control mechanism 13 control the traction speed to control the unwinding speed and the traction speed to be synchronized, and to keep the unwinding tension of the glass fiber cloth 01 constant.

[0050] By arranging the inkjet mechanism 12 in the unwinding unit 1 and before the constant tension control mechanism 13, the inkjet mechanism 12 and the unwinding mechanism 11 are combined into one, the path of the traction fabric is shortened, and the additional resistance of the inkjet mechanism 12 to the traction system is effectively avoided, thereby ensuring the stability of the cutting machine traction force, effectively reducing the risk of production interruption or equipment downtime, and improving the reliability and stability of the system.

[0051] The inkjet mechanism 12 is arranged obliquely downward and parallel to the end of the glass fiber cloth 01, thereby ensuring that the inkjet can be accurately printed on the surface of the glass fiber cloth 01, and ensuring the continuity and stability of the inkjet process. In addition, the obliquely downward inkjet head 124a has the following advantages compared with the obliquely upward inkjet head 124a in the prior art:

[0052] Reducing the clogging of the nozzle, the obliquely downward inkjet head 124a utilizes the action of gravity to make the ink powder and impurities flow naturally downward, avoiding the accumulation of ink powder or other impurities in the nozzle. On the contrary, the obliquely upward or transversely arranged inkjet head 124a in the prior art easily causes the ink powder and impurities to accumulate in the direction of the nozzle, increasing the risk of nozzle clogging. Through this design, the nozzle of the inkjet head 124a is cleaner, reducing the problems of uneven inkjet or downtime caused by clogging, thereby improving the stability and production efficiency of the inkjet equipment.

[0053] The inclined downward design ensures that the toner inside the inkjet head 124a can flow more smoothly under the action of gravity, avoiding the accumulation of toner inside the inkjet head, which not only reduces toner residue but also ensures more complete use of toner during each inkjet, avoiding waste. By optimizing the flowability of toner, the inkjet head 124a can maintain high inkjet efficiency, ensuring that toner is fully utilized during the inkjet process, further improving inkjet quality and economy.

[0054] The computer control achieves synchronization of the unwinding speed and the pulling speed, avoiding the problems of cloth slipping or uneven pulling caused by speed mismatch, improving production efficiency, and ensuring accurate synchronization of the cutting and inkjet processes. The computer control servo motor and constant tension control system achieve automation in the entire unwinding, inkjet, and cutting processes. Automation control reduces the possibility of human intervention and operational errors, improves the automation level of the production line, reduces human errors during production, and improves production efficiency and product quality consistency.

[0055] As a preferred embodiment of the above embodiment, the unwinding mechanism 11 further includes a first directional wheel 114, a second directional wheel 115, a third directional wheel 116, and a fourth directional wheel 117 arranged in sequence along the unwinding direction of the fiberglass cloth 01; the unwinding shaft 112, the first directional wheel 114, the second directional wheel 115, and the third directional wheel 116 surround a containing space 113, and the inkjet mechanism 12 is arranged in the containing space 113; the end face of the inkjet head 124a is parallel to the fiberglass cloth 01 between the second directional wheel 115 and the third directional wheel 116, and the fourth directional wheel 117 guides the fiberglass cloth 01 to the cutting machine. Specifically, through the reasonable arrangement of the directional wheels, the unwinding path of the fiberglass cloth 01 is accurately controlled to ensure consistent pulling force and speed during inkjet and cutting processes. The end face of the inkjet head 124a is parallel to the fiberglass cloth 01 between the second directional wheel 115 and the third directional wheel 116, which can ensure accurate and consistent inkjet and avoid inkjet deviation caused by cloth deviation, improving inkjet quality and precision. The arrangement of multiple directional wheels and the integrated design of the inkjet mechanism 12 simplify the structure of the equipment, reduce the complexity of mechanical components, improve the space utilization of the equipment, reduce the floor area of the equipment, and also reduce the difficulty of maintenance and adjustment. The equipment is more convenient to operate, and it is more efficient to repair and replace parts.

[0056] In the embodiment, the inclination angle of the code spraying head 124a is 46° to 50°, specifically, the end surface of the code spraying head 124a is parallel to the fiberglass cloth 01 between the second directional wheel 115 and the third directional wheel 116, that is, the angle of the fiberglass cloth 01 between the second directional wheel 115 and the third directional wheel 116 is 46° to 50°, preferably 48°. For example, if the angle is too small, the distance between the second directional wheel 115 and the third directional wheel 116 increases, resulting in an increase in the length of each unwinding unit 1, which increases the space occupied by the equipment, and in turn increases the length of the traction fabric. If the angle is too large, the accommodation space 113 surrounded by the unwinding shaft 112, the first directional wheel 114, the second directional wheel 115 and the third directional wheel 116 is too small, which may limit the smooth guidance of the fiberglass cloth 01, thereby affecting the normal operation of the equipment. By reasonably selecting the inclination angle of the code spraying head 124a, the accommodation space 113 can be optimized, which not only avoids the increase in the length of the traction fabric caused by the small angle, but also prevents the problem of too small space caused by the large angle, ensuring that the fiberglass cloth 01 can smoothly pass through the entire unwinding unit 1, and improving the stability and continuity of the equipment operation.

[0057] As a preferred embodiment of the above embodiment, as shown in Figure 4 、 Figure 5 , the code spraying mechanism 12 further comprises a bracket 121 and an inkjet assembly;

[0058] One end of the bracket 121 is arranged on the base 111, and the other end is provided with the inkjet assembly;

[0059] The inkjet assembly comprises a frame 122, a first baffle 123, ink cartridges 124 and a driving member 125; the frame 122 is arranged on the bracket 121, the first baffle 123 is arranged in the frame 122 and is in sliding connection with the frame 122, a plurality of through slots 123a are sequentially arranged on the first baffle 123, a plurality of ink cartridges 124 are arranged on the first baffle 123, and the code spraying head 124a of the ink cartridge 124 penetrates through the through slot 123a, and the driving member 125 drives the first baffle 123 to reciprocate along the width direction of the fiberglass cloth 01. Specifically, the number of ink cartridges 124 is determined according to the width of the fiberglass cloth 01. In the embodiment, as shown in Figure 10 , the width of the fiberglass cloth of the wind power blade is 50 inches, i.e. 1270 mm, which is divided into 4 parts, each part is about 300 mm wide, so at most 4 codes can be sprayed at a time, so the number of ink cartridges 124 is 4, and other numbers of ink cartridges 124 are also within the protection scope of the present application.

[0060] The principle of code spraying: the servo motor controls the synchronous left and right movement of the four inkjet heads along the surface of the glass fiber cloth 01, and the computer calculates the advance amount of code spraying according to the CAD strip code position and controls the code spraying; when the ink cartridge 124 moves to the right, the computer controls the inkjet of some points and the non-inkjet of some points according to the moving distance, forming a string of codes. Since the fabric moves in the direction shown in the figure, the sprayed code is also inclined.

[0061] In this embodiment, the code spraying height of a single ink cartridge 124 is 12.5 mm, and the width can be set by itself. The font size is temporarily set to 25 mm*8 mm; each ink cartridge 124 is responsible for code spraying in a 300 mm interval, and only 4 ink cartridges 124 are needed for each layer to cover; each ink cartridge 124 is responsible for a 300 mm interval, and the single font width is 8 mm, which can spray up to 30 fonts, that is, the piece number cannot exceed 30.

[0062] In this embodiment, the computer controls the servo motor to drive the ink cartridge 124 to move and spray ink, and the driving part 125 drives the first baffle 123 to make reciprocating motion along the width direction of the glass fiber cloth 01, thereby driving the multiple ink cartridges 124 to work synchronously. This design enables the multiple ink cartridges 124 to perform synchronous / asynchronous inkjet operations, covers a larger area of the glass fiber cloth 01, and improves the inkjet efficiency. Through synchronous movement, large-area code spraying can be efficiently performed, time waste in the production process is reduced, and the overall production line efficiency is improved.

[0063] In this embodiment, as shown in Figure 6 , Figure 7 The code spraying mechanism 12 further includes a second baffle 126, which is arranged in parallel with the first baffle 123, and the first baffle 123 and the second baffle 126 are arranged on both sides of the glass fiber cloth 01. Specifically, since the glass fiber cloth 01 is always moving during unwinding, the movement causes the glass fiber cloth 01 to vibrate, which affects the accuracy and stability of inkjet. By arranging the first baffle 123 and the second baffle 126 on both sides of the glass fiber cloth 01, the unstable factors caused by cloth vibration can be effectively offset or reduced, thereby maintaining the relative position stability between the inkjet head and the glass fiber cloth 01, and ensuring the accuracy and consistency of the code spraying quality.

[0064] The gap between the first baffle 123 and the second baffle 126 is 3-6 mm, and preferably 4 mm. By controlling the gap of the baffles, the stability of the cloth during inkjet is guaranteed, the accuracy of the inkjet head and the quality of the inkjet are improved, which helps to reduce the unclear or deviation of the code spraying caused by unstable cloth or inkjet head error, thereby improving the production efficiency and product quality.

[0065] Since the distance between the first baffle 123 and the second baffle 126 is only 3-6 mm, which is relatively small, it increases the difficulty of installing the glass fiber cloth 01 on site, so the second baffle 126 is further optimized to facilitate the installation of the glass fiber cloth 01, as follows:

[0066] As a preferred embodiment of the above-mentioned embodiment, with reference to Figure 6 , the code spraying mechanism 12 further comprises an adjusting foot 127, the back of the second baffle 126 is provided with a fixed shaft 126a, and the two adjusting feet 127 are in V-shaped structure, one end is hingedly arranged with the support 121, and the other end is connected with the fixed shaft 126a, and a tension spring 128 is arranged between the adjusting foot 127 and the support 121, and a limiting piece is arranged on the support 121. By pulling the adjusting foot 127 to drive the second baffle 126 away from or close to the first baffle 123, the distance between the first baffle 123 and the second baffle 126 is changed, thereby increasing the space for installing the glass fiber cloth 01, reducing the manual intervention and installation difficulty, and improving the production efficiency; the design of the adjusting foot 127 and the tension spring 128 enables the operator to easily adjust the position of the second baffle 126, the tension spring 128 provides necessary elastic support, and the limiting piece ensures that the movement of the baffle will not exceed the set range, avoiding damage to the equipment structure.

[0067] In this embodiment, with reference to Figure 8 , the side wall of the code spraying head 124a is provided with a baffle 124b, which is 1-2 mm higher than the end face of the code spraying head 124a, so as to ensure the distance between the code spraying head 124a and the glass fiber cloth 01. Through the action of the baffle 124b, it can be ensured that the code spraying head 124a maintains a predetermined distance from the surface of the glass fiber cloth 01 during the inkjet process, thereby avoiding unstable inkjet quality caused by too small or too large distance, for example, too small distance may cause the inkjet head to contact the surface of the glass fiber cloth 01, affecting the inkjet precision; while too large distance may cause uneven inkjet or blurred code, by setting the height of the baffle 124b, the distance during the inkjet process can be accurately controlled, ensuring the accuracy and consistency of the inkjet effect.

[0068] As a preferred embodiment of the above-mentioned embodiment, with reference to Figure 3 , the constant tension control mechanism 13 comprises a constant tension cylinder 131, a tension control balance wheel 132, a tension rod 133, an angle sensor 134, a first limiting piece 135 and a second limiting piece 136;

[0069] Two tension rods 133 are arranged on both sides of the base 111 and are hingedly arranged with the base 111, an angle sensor 134 is arranged at the hinge for detecting the angle of the tension rod 133; one end of the constant tension cylinder 131 is hingedly arranged with the base 111, the other end is hingedly arranged with one end of the tension rod 133, the tension control balance wheel 132 is arranged at the other end of the tension rod 133, and the tension control balance wheel 132 is arranged between the third directional wheel 116 and the fourth directional wheel 117; the first limiting piece 135 and the second limiting piece 136 are arranged on the base 111 on both sides of the tension rod 133 for limiting the maximum angle and the minimum angle of the tension rod 133, and the angle sensor 134 is linked with the computer-controlled servo motor of the unwinding mechanism 11.

[0070] Specifically, the constant tension cylinder 131 keeps the tension consistent during the extension and contraction of the cylinder, and when not working, the tension control balance wheel 132 stops at the minimum A position; when unwinding, the tension control balance wheel 132 is set at the middle B position, and B is set as the reference position, and the angle sensor 134 records the angle B°.

[0071] When unwinding, if the cloth tension is too large, the tension control balance wheel 132 deviates to the C position, and the angle sensor 134 detects the deviation reference angle +B°, and the angle deviation is sent to the computer-controlled motor of the unwinding mechanism 11 to speed up the unwinding; if the cloth tension is too small, the tension control balance wheel 132 deviates to the A position, and the angle sensor 134 detects the deviation reference angle -B°, and the angle deviation is sent to the computer-controlled motor of the unwinding mechanism 11 to slow down the unwinding; according to the position of the tension control balance wheel 132, from a micro perspective, the computer always controls the motor to speed up / slow down the unwinding, causing the tension control balance wheel 132 to be in a dynamic balance position B; from a macro perspective, the tension control balance wheel 132 swings left and right as the unwinding tension changes; if the PID control is well adjusted, the tension control balance wheel 132 only swings slightly, at which time the unwinding tension is also balanced at the set value, and changing the tension of the constant tension cylinder 131 can conveniently change the unwinding tension.

[0072] The angle sensor 134 is linked with the computer-controlled servo motor of the unwinding mechanism 11, which detects the angle change of the tension rod 133 in real time, and the computer-controlled servo motor of the unwinding mechanism 11 automatically adjusts the unwinding speed according to the tension change, when the glass fiber cloth 01 tension is too large, the computer-controlled motor speeds up the unwinding; when the tension is too small, the motor slows down the unwinding, the whole process does not need manual intervention, greatly improves the production efficiency, and reduces the possibility of manual operation error, ensures the automation and accuracy of the production line.

[0073] During the dynamic unwinding process, the cloth will drift forward and backward in the figure, which will directly affect the accuracy of the code position, therefore, the cloth unwinding must be corrected, therefore, the following improvements are made:

[0074] In the present embodiment, reference is made to Figure 3 、 Figure 9 , also comprising a rack 5 and a deviation rectifying mechanism 4, the deviation rectifying mechanism 4 comprising a deviation rectifying photoelectric sensor 41, a deviation rectifying motor and a deviation rectifying guide rail 42;

[0075] The deviation rectifying guide rail 42 is arranged on the rack 5 along the width direction of the fiberglass cloth 01, and the base 111 is slidably arranged on the deviation rectifying guide rail 42; the deviation rectifying photoelectric sensor 41 is arranged on the rack 5 and located outside the fiberglass cloth, for rectifying the position of the fiberglass cloth in the width direction; the deviation rectifying motor is used to drive the base 111 to move on the deviation rectifying guide rail 42.

[0076] The deviation rectifying sensor detects the edge of the cloth without contact with the ground as the reference (the rack 5 is fixed on the ground), and the whole unwinding device is installed on the rack 5, which can move forward and backward on the guide rail of the rack 5, when the deviation rectifying sensor finds that the cloth edge moves to the "inside" of the drawing, the sensor sends a command to the deviation rectifying motor, and the motor makes the whole cloth unwinding device move to the "outside" of the drawing until the cloth edge returns to the reference position of the deviation rectifying sensor, which ensures that the cloth edge is always stable to facilitate accurate code spraying.

[0077] The deviation rectifying photoelectric sensor 41 detects the position of the cloth edge without contact, and adjusts the position of the fiberglass cloth 01 in real time according to the detection result, to ensure that the cloth is always in the correct position in the width direction during unwinding, and through the real-time adjustment of the deviation rectifying mechanism 4, the inkjet head can always accurately spray to the correct position, avoiding the deviation or unclearness of the code spraying caused by the deviation of the cloth during the inkjet process, and significantly improving the code spraying accuracy.

[0078] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An automatic coding device for cutting wind turbine blades, characterized in that: It includes a plurality of unwinding units and a cutting unit arranged in sequence; The cutting unit is used to cut multiple layers of glass fiber cloth; Each of the unwinding units includes an unwinding mechanism, a coding mechanism, and a constant tension control mechanism. The unwinding mechanism is used to unwind the fiberglass cloth, and the coding mechanism is used to perform coding marking on the fiberglass cloth. The unwinding mechanism includes a base and an unwinding shaft provided on the base, and a plurality of directional wheels, wherein the plurality of directional wheels guide the fiberglass cloth to form a receiving space. One end of the coding mechanism is provided on the base, and the other end is provided in the receiving space. The coding mechanism is provided with a spraying terminal, so that the spraying terminal is provided downwardly inclined and parallel to the fiberglass cloth on the end surface of the spraying terminal. The constant tension control mechanism is provided on the base, and is used to control the constant tension of the glass fiber cloth when it is unrolled, and the coding mechanism is provided in front of the constant tension control mechanism along the path of the glass fiber cloth unrolling; The unwinding mechanism is driven by a servo motor controlled by a computer, and controls the traction speed according to the cutting unit and the constant tension control mechanism, so as to control the cloth-releasing speed to be synchronized with the traction speed and make the cloth-releasing tension of the glass fiber cloth constant.

2. The automatic coding device for cutting wind turbine blades according to claim 1 is characterized in that: The unwinding mechanism also includes a first directional wheel, a second directional wheel, a third directional wheel, and a fourth directional wheel arranged in sequence along the unwinding direction of the fiberglass cloth; the unwinding shaft, the first directional wheel, the second directional wheel, and the third directional wheel are arranged to form the accommodating space, and the coding mechanism is arranged in the accommodating space; the end surface of the coding terminal is parallel to the fiberglass cloth between the second directional wheel and the third directional wheel, and the fourth directional wheel guides the fiberglass cloth to the cutting machine.

3. The automatic coding device for cutting wind turbine blades according to claim 2 is characterized in that: The inclination angle of the spray dock is 46° to 50°.

4. The automatic coding device for cutting wind turbine blades according to claim 1 is characterized in that: The coding mechanism also includes a bracket and an inkjet assembly; One end of the bracket is arranged on the base, and the other end is provided with the inkjet assembly; The inkjet assembly includes a frame, a first baffle, an ink cartridge and a driving member; the frame is arranged on the bracket, the first baffle is arranged in the frame and is slidably connected to the frame, a plurality of through slots are sequentially provided on the first baffle, a plurality of ink cartridges are arranged on the first baffle, and the ink jet terminals of the ink cartridges pass through the through slots, and the driving member drives the first baffle to reciprocate along the width direction of the glass fiber cloth.

5. The automatic coding device for cutting wind turbine blades according to claim 4 is characterized in that: The coding mechanism further includes a second baffle, which is arranged parallel to the first baffle, and the first baffle and the second baffle are respectively arranged on both sides of the glass fiber cloth.

6. The automatic coding device for cutting wind turbine blades according to claim 5 is characterized in that: A gap between the first baffle and the second baffle is 3 mm to 6 mm.

7. The automatic coding device for cutting wind turbine blades according to claim 5 is characterized in that: The inkjet coding mechanism also includes an adjusting foot. A fixed shaft is provided on the back of the second baffle. The two adjusting feet are in a V-shaped structure, one end of which is hinged to the bracket and the other end is connected to the fixed shaft. A tension spring is provided between the adjusting foot and the bracket, and a limit piece is provided on the bracket. The second baffle is driven away from or close to the first baffle by pulling the adjusting foot.

8. The automatic coding device for cutting wind turbine blades according to claim 1 is characterized in that: The side wall of the spray terminal is provided with a baffle, and the baffle is set 1mm to 2mm higher than the end surface of the spray terminal.

9. The automatic coding device for cutting wind turbine blades according to claim 2, characterized in that: The constant tension control mechanism includes a constant tension cylinder, a tension control balance wheel, a tension rod, an angle sensor, a first limiter and a second limiter; The two tension rods are arranged on both sides of the base and are hinged to the base. The angle sensor is arranged at the hinge to detect the angle of the tension rod; one end of the constant tension cylinder is hinged to the base, and the other end is hinged to one end of the tension rod. The tension control balance wheel is arranged at the other end of the tension rod, and the tension control balance wheel is arranged between the third directional wheel and the fourth directional wheel; the first limit member and the second limit member are arranged on the base on both sides of the tension rod to limit the maximum angle and the minimum angle of the tension rod. The angle sensor is linked to the computer-controlled servo motor of the unwinding mechanism.

10. The automatic coding device for cutting wind turbine blades according to claim 1, characterized in that: It also includes a frame and a correction mechanism, wherein the correction mechanism includes a correction photoelectric sensor, a correction motor and a correction guide rail; The correction guide rail is arranged on the frame along the width direction of the fiberglass cloth, and the base is slidably arranged on the correction guide rail; the correction photoelectric sensor is arranged on the frame and located on the outside of the fiber cloth, and is used to correct the position of the fiber cloth in the width direction; the correction motor is used to drive the base to move on the correction guide rail.

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