A high temperature superconducting magnet winding machine
Patent Information
- Application Number
- CN202522219194.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-21
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-10-21
AI Technical Summary
[0003]常规高温超导绕线机多为单绕线盘设计，无法满足超导带材的特殊并绕需求，部分场景需将超导带材与绝缘材料、铜带、钢带等异电导率带材并绕，或同种超导带材多根并绕，以提升线圈匝间电阻率或整体强度
[0016]本实用新型的高温超导磁体绕线机的有益效果：在实际工作过程中，根据高温超导线圈的绕制工艺，将超导带材盘固定到第一放线盘上，然后通过人工走带将超导带材通过升降导向轮并且材绕制在固定于收线盘上的线圈骨架中得到超导磁体线圈。通过旋转控制盒输入相关参数等，启动设备，伺服电机带动第一放线盘和收线盘旋转，开始饼式线圈的绕制。当有并绕需求时，可将其他带材卷盘固定到第二放线盘上，通过人工走带将带材通过升降导向轮与超导带材共同绕制。当有螺线管线圈的绕制需求时，可通过旋转控制盒选择绕线模式，此时收线盘下方的驱动机构可带动收线盘上下移动，从而实现螺线管线圈的绕制。由此，该高温超导磁体绕线机通过设置独立设置的第一放线盘、第二放线盘以及能够在驱动机构下升降的收线盘，既能够满足饼式与螺线管两类超导线圈的绕制，实现一机两用无需切换多台设备，节约成本和操作空间，还能够实现超导带材与其他带材的并绕功能。
Smart Images
Figure CN224803745U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of high-temperature superconducting winding equipment, and in particular to a high-temperature superconducting magnet winding machine. Background Technology
[0002] High-temperature superconductors can achieve a superconducting state in the liquid nitrogen temperature range. This characteristic significantly reduces the cooling costs and technical difficulties of their applications, laying the foundation for their large-scale application and highlighting their enormous potential. Among the applications of high-temperature superconductors, high-temperature superconducting magnets are one of the core and important application directions. As the core functional component of high-temperature superconducting magnets, the fabrication of high-temperature superconducting coils requires superconducting tape as the basic raw material, which must be precisely wound into shape using specific processes. This crucial step has strict requirements for winding accuracy and tension control; therefore, high-temperature superconducting winding machines have become indispensable core equipment for achieving large-scale, high-quality production of high-temperature superconducting coils.
[0003] Conventional high-temperature superconducting winding machines are mostly single-winding-coil designs, which cannot meet the special parallel winding requirements of superconducting tapes. In some scenarios, it is necessary to parallel wind superconducting tapes with tapes of different conductivity, such as insulating materials, copper tapes, and steel tapes, or to parallel wind multiple tapes of the same type of superconducting tape to improve the inter-turn resistivity or overall strength of the coil. Such winding machines require manual pre-winding of the parallel material before winding it onto the frame, which is time-consuming, inefficient, and lacks precision, making it difficult to efficiently and accurately produce parallel-wound coils. In addition, current high-temperature superconducting winding machines on the market have significant shortcomings in superconducting coil winding functions. They cannot effectively clean the high-temperature superconducting tapes before winding, resulting in a decrease in the winding quality of the superconducting coil. More importantly, they cannot handle both disc-type and solenoid-type superconducting coil winding, and can only perform winding operations for one type, failing to meet the diverse winding needs of high-temperature superconducting coils. Utility Model Content
[0004] The purpose of this invention is to provide a high-temperature superconducting magnet winding machine that can wind both disc-type and solenoid-type superconducting coils, achieving dual functionality without switching between multiple devices, saving costs and operating space. It can also achieve the function of winding superconducting tapes with other tapes.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] This utility model discloses a high-temperature superconducting magnet winding machine, comprising: a frame; a first pay-off reel, which is mounted on the frame and used to output a first strip; a second pay-off reel, which is mounted on the frame and used to output a second strip; a rotation control box, which is rotatably mounted on the frame and located downstream of the first and second pay-off reels; a lifting guide wheel, which is vertically mounted on the frame and used to guide the output first and / or second strips; a take-up reel, which is located downstream of the lifting guide wheel and used to wind the first and / or second strips; and a drive mechanism connected to the take-up reel to drive the take-up reel to lift and rotate.
[0007] In some embodiments, the high-temperature superconducting magnet winding machine further includes a support frame, which is rotatably mounted on the frame, and the rotation control box is mounted on one end of the support frame.
[0008] In some embodiments, the high-temperature superconducting magnet winding machine further includes a telescopic arm, which is adjustablely mounted on the frame via a guide rail. One end of the telescopic arm is provided with a threaded hole, in which a stud is installed. The lifting guide wheel is rotatably mounted on the top of the stud.
[0009] In some embodiments, the high-temperature superconducting magnet winding machine further includes a first tension gauge wheel, which is mounted on the frame and located between the first pay-off reel and the lifting guide wheel. The first strip is output from the first pay-off reel, passes through the first tension gauge wheel, and enters the lifting guide wheel.
[0010] In some specific embodiments, the high-temperature superconducting magnet winding machine further includes a plurality of first guide wheels, which are mounted on the frame and spaced apart between the first tension gauge wheel and the first pay-off reel, and are used to guide the first strip.
[0011] In some more specific embodiments, the high-temperature superconducting magnet winding machine further includes a first cleaning device, which is mounted on the frame and located between the first guide wheel and the first tension gauge wheel. The first cleaning device is used to clean the first strip.
[0012] In some embodiments, the high-temperature superconducting magnet winding machine further includes a second tension gauge wheel, which is mounted on the frame and located between the second pay-off reel and the lifting guide wheel. The second strip is output from the second pay-off reel, passes through the second tension gauge wheel, and enters the lifting guide wheel.
[0013] In some specific embodiments, the high-temperature superconducting magnet winding machine further includes a plurality of second guide wheels, which are mounted on the frame and spaced apart between the second tension gauge wheel and the second pay-off reel, and are used to guide the second strip.
[0014] In some specific embodiments, the high-temperature superconducting magnet winding machine further includes a second cleaning device, which is installed on the frame and located between the second guide wheel and the second tension gauge wheel. The second cleaning device is used to clean the second strip.
[0015] In some embodiments, the high-temperature superconducting magnet winding machine further includes a measuring wheel, which is mounted on the frame and located between the first pay-off reel, the second pay-off reel, and the lifting guide wheel. The measuring wheel is capable of measuring the length of the first strip and / or the second strip.
[0016] The beneficial effects of this high-temperature superconducting magnet winding machine are as follows: In actual operation, according to the winding process of high-temperature superconducting coils, the superconducting tape reel is fixed to the first pay-off reel. Then, the superconducting tape is manually guided through lifting guide wheels and wound into a coil frame fixed to the take-up reel to obtain a superconducting magnet coil. By inputting relevant parameters through the rotary control box, the equipment is started, and the servo motor drives the first pay-off reel and take-up reel to rotate, beginning the winding of the pancake coil. When parallel winding is required, other tape reels can be fixed to the second pay-off reel, and the tape is manually guided through lifting guide wheels to wind together with the superconducting tape. When solenoid coil winding is required, the winding mode can be selected through the rotary control box. At this time, the drive mechanism below the take-up reel can drive the take-up reel to move up and down, thereby realizing the winding of the solenoid coil. Therefore, this high-temperature superconducting magnet winding machine, by setting up an independently configured first and second pay-off reel and a take-up reel that can be raised and lowered under the drive mechanism, can not only meet the winding needs of both disc-type and solenoid-type superconducting coils, but also achieve dual-purpose operation without switching between multiple devices, saving costs and operating space. It can also realize the function of winding superconducting tapes with other tapes.
[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of a high-temperature superconducting magnet winding machine according to an embodiment of this utility model;
[0019] Figure 2 This is a schematic diagram of the high-temperature superconducting magnet winding machine from another direction according to an embodiment of this utility model.
[0020] Figure label:
[0021] 1. First tension gauge wheel; 2. First cleaning device; 3. First guide wheel; 4. First pay-off reel; 5. Second tension gauge wheel; 6. Second cleaning device; 7. Second guide wheel; 8. Second pay-off reel; 9. Meter wheel; 10. Rotation control box; 11. Telescopic arm; 12. Lifting guide wheel; 13. Take-up reel; 14. Frame; 15. Support frame; 16. Guide rail. Detailed Implementation
[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0023] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] In the description of this embodiment, the terms "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0025] This utility model discloses a high-temperature superconducting magnet winding machine, referenced... Figures 1-2As shown, the high-temperature superconducting magnet winding machine includes a frame 14, a first pay-off reel 4, a second pay-off reel 8, a rotation control box 10, a lifting guide wheel 12, a take-up reel 13, and a drive mechanism. The first pay-off reel 4 is mounted on the frame 14 and is used to output a first strip. The second pay-off reel 8 is mounted on the frame 14 and is used to output a second strip. Both the first pay-off reel 4 and the second pay-off reel 8 include a servo motor and a pay-off reel body. In actual operation, the servo motor can drive the pay-off reel body to rotate to achieve the output of the first and second strips. The rotation control box 10 is rotatably mounted on the frame 14 and is located downstream of the first pay-off reel 4 and the second pay-off reel 8. The lifting guide wheel 12 is vertically mounted on the frame 14 and is used to guide the output first and / or second strips. The take-up reel 13 is located downstream of the lifting guide wheel 12 and is used to wind the first and / or second strips. The drive mechanism is connected to the take-up reel 13 to drive the take-up reel 13 to lift and rotate.
[0026] It should be noted that, in the actual winding process, the first and second strips can be selected according to the actual winding needs. The first strip can be a superconducting strip or a strip with different electrical conductivities, such as insulating material, copper strip, or steel strip. The second strip can also be a superconducting strip or a strip with different electrical conductivities, such as insulating material, copper strip, or steel strip. The following description uses a superconducting strip as the first strip and an insulating material, copper strip, or steel strip as the second strip as an example to illustrate the high-temperature superconducting magnet winding machine of this embodiment.
[0027] Understandably, in actual operation, according to the winding process of high-temperature superconducting coils, the superconducting tape reel is fixed to the first pay-off reel 4. Then, the superconducting tape is manually wound onto the coil frame fixed to the take-up reel 13 via the lifting guide wheel 12 to obtain the superconducting magnet coil. By inputting relevant parameters through the rotary control box 10, the equipment is started, and the servo motor drives the first pay-off reel 4 and the take-up reel 13 to rotate, beginning the winding of the pancake coil. When parallel winding is required, other tape reels can be fixed to the second pay-off reel 8, and the tape is manually wound together with the superconducting tape via the lifting guide wheel 12. When solenoid coil winding is required, the winding mode can be selected through the rotary control box 10. At this time, the drive mechanism below the take-up reel 13 can drive the take-up reel 13 to move up and down, thereby realizing the winding of the solenoid coil. In summary, the high-temperature superconducting magnet winding machine of this embodiment, by setting up an independently configured first pay-off reel 4, a second pay-off reel 8, and a take-up reel 13 that can be raised and lowered under the drive mechanism, can not only meet the winding needs of both disc-type and solenoid-type superconducting coils, but also achieve dual-purpose operation without switching multiple devices, saving costs and operating space. It can also realize the function of winding superconducting tapes with other tapes.
[0028] It should be noted that the rotary control box 10 can be electrically connected to the servo motors and drive mechanisms of the first pay-off reel 4 and the second pay-off reel 8. The rotary control box 10 can also be equipped with a control touch screen, through which operators can set winding parameters.
[0029] It should be further explained that the drive mechanism consists of a servo motor and a mechanical transmission structure installed inside the frame 14. During actual operation, after the servo motor starts, it drives the rotation and lifting of the take-up reel 13 through the transmission of the mechanical transmission structure. Of course, in other embodiments of this utility model, the drive mechanism can be a separate lifting drive mechanism and a rotation drive mechanism. The lifting drive mechanism is used to drive the rotation drive mechanism to lift and lower, while the rotation drive mechanism drives the take-up reel 13 to rotate.
[0030] Optionally, the frame 14 is made of high-strength aluminum profile.
[0031] Optionally, the bottom of the frame 14 is equipped with fixed casters. The overall structure and principle are simple but feature-rich, easy and convenient to operate, and aesthetically pleasing and lightweight.
[0032] refer to Figures 1-2 As shown, the high-temperature superconducting magnet winding machine also includes a support frame 15, which is rotatably mounted on the frame 14. A rotation control box 10 is mounted on one end of the support frame 15. Understandably, during actual operation, the drive structure inside the frame 14 can drive the support frame 15 to rotate, thereby adjusting the position of the rotation control box 10 and adjusting the position of the lifting guide wheel 12 to meet different winding processes. The drive structure of the support frame 15 consists of a servo motor and a mechanical transmission structure installed inside the frame 14. During actual operation, after the servo motor starts, it drives the rotation of the support frame 15 through the transmission of the mechanical transmission structure.
[0033] refer to Figures 1-2 As shown, the high-temperature superconducting magnet winding machine also includes a telescopic arm 11. The telescopic arm 11 is adjustablely mounted on the frame 14 via a guide rail 16, and one end of the telescopic arm 11 has a threaded hole in which a stud is installed. A lifting guide wheel 12 is rotatably mounted on the top of the stud. It is understood that in actual operation, the position of the lifting guide wheel 12 is adjusted by adjusting the length of the telescopic arm 11 and its position relative to the frame 14 to meet different winding processes. In embodiments of this invention, the telescopic arm 11 can be selected from pneumatic, electric, or hydraulic telescopic structures, or a telescopic rod, which can be manually adjusted during the actual process.
[0034] refer to Figures 1-2As shown, the high-temperature superconducting magnet winding machine also includes a first tension gauge wheel 1. The first tension gauge wheel 1 is installed on the frame 14 and located between the first pay-off reel 4 and the lifting guide wheel 12. The first strip is output from the first pay-off reel 4, passes through the first tension gauge wheel 1, and enters the lifting guide wheel 12. It can be understood that the tension gauge wheel is the core component of the tension measurement device. It directly contacts the material being measured and measures the tension by sensing the force exerted by the material on the guide wheel. In this embodiment, the addition of a first tension gauge wheel 1 between the first pay-off reel 4 and the lifting guide wheel 12 enables the measurement of the tension experienced by the first strip during the winding process. The rotation control box 10 can adjust the rotation speed between the first pay-off reel 4 and the take-up reel 13 based on the detection result of the first tension gauge wheel 1, thereby achieving controllable winding tension during the winding process and improving winding uniformity and accuracy.
[0035] Optional, see reference Figures 1-2 As shown, the high-temperature superconducting magnet winding machine also includes multiple first guide wheels 3. The first guide wheels 3 are mounted on the frame 14, and are spaced apart between the first tension gauge wheel 1 and the first pay-off reel 4, serving to guide the first strip. It can be understood that after the first pay-off reel 4 outputs the first strip, the first strip passes through the first tension gauge wheel 1 and is then guided by the multiple first guide wheels 3, ensuring stable feeding of the first strip and improving winding uniformity and accuracy. Optionally, the number of first guide wheels 3 is three. Of course, in other embodiments of this invention, the number of first guide wheels 3 can be two, four, or more.
[0036] Further optional, see reference Figures 1-2 As shown, the high-temperature superconducting magnet winding machine also includes a first cleaning device 2. The first cleaning device 2 is installed on the frame 14 and located between the first guide wheel 3 and the first tension gauge wheel 1. The first cleaning device 2 is used to clean the first strip. It can be understood that the first strip output from the first pay-off reel 4 passes through the first tension gauge wheel 1 and enters the first cleaning device 2. The first cleaning device 2 can clean the first strip, removing stains and dust particles from the surface of the first strip, ensuring the winding quality of the superconducting magnet coil.
[0037] refer to Figures 1-2As shown, the high-temperature superconducting magnet winding machine also includes a second tension gauge wheel 5. The second tension gauge wheel 5 is mounted on the frame 14 and located between the second pay-off reel 8 and the lifting guide wheel 12. The second strip is output from the second pay-off reel 8, passes through the second tension gauge wheel 5, and enters the lifting guide wheel 12. It is understood that the tension gauge wheel is the core component of the tension measurement device; it directly contacts the material being measured and measures the tension by sensing the force exerted by the material on the guide wheel. In this embodiment, the addition of a second tension gauge wheel 5 between the second pay-off reel 8 and the lifting guide wheel 12 enables the measurement of the tension experienced by the second strip during the winding process. The rotation control box 10 can adjust the rotational speed between the second pay-off reel 8 and the take-up reel 13 based on the detection results of the second tension gauge wheel 5, achieving controllable winding tension during the winding process and improving winding uniformity and accuracy.
[0038] Optional, see reference Figures 1-2 As shown, the high-temperature superconducting magnet winding machine also includes multiple second guide wheels 7. The second guide wheels 7 are mounted on the frame 14, and are spaced apart between the second tension gauge wheel 5 and the second pay-off reel 8, serving to guide the second strip. It can be understood that after the second pay-off reel 8 outputs the second strip, the second strip passes through the second tension gauge wheel 5 and is guided by the multiple second guide wheels 7, ensuring stable delivery of the second strip and improving winding uniformity and accuracy. Optionally, the number of second guide wheels 7 is three. Of course, in other embodiments of this invention, the number of second guide wheels 7 can be two, four, or more.
[0039] Further optional, see reference Figures 1-2 As shown, the high-temperature superconducting magnet winding machine also includes a second cleaning device 6. The second cleaning device 6 is installed on the frame 14 and located between the second guide wheel 7 and the second tension gauge wheel 5. The second cleaning device 6 is used to clean the second strip. It can be understood that the second strip output from the second pay-off reel 8 passes through the second tension gauge wheel 5 and enters the second cleaning device 6. The second cleaning device 6 can clean the second strip, removing stains and dust particles from its surface, ensuring the winding quality of the superconducting magnet coil.
[0040] refer to Figures 1-2As shown, the high-temperature superconducting magnet winding machine also includes a measuring wheel 9, which is mounted on the frame 14 and located between the first pay-off reel 4, the second pay-off reel 8, and the lifting guide wheel 12. The measuring wheel 9 can measure the length of the first strip and / or the second strip. It is understood that by adding a measuring wheel 9 between the first pay-off reel 4, the second pay-off reel 8, and the lifting guide wheel 12, the winding length of the first strip can be measured when winding it alone, the winding length of the second strip can be measured when winding it alone, and the winding length can be measured when the first and second strips are wound simultaneously. This allows for precise control of the winding length of the superconducting coil in the high-temperature superconducting magnet winding machine, improving the product winding yield.
[0041] The advantages of the high-temperature superconducting magnet winding machine in this embodiment are as follows:
[0042] First, it can meet the winding process of strips of different widths, realize the function of winding superconducting strips with other strips, and the winding tension is controllable, the winding is uniform, the precision is guaranteed, and the efficiency is high.
[0043] Second, the first and second strips are cleaned by the first cleaning device 2 and the second cleaning device 6 to remove stains and dust particles from the surface of the first and second strips, so as to ensure the winding quality of the superconducting magnet coil.
[0044] Third, it can meet the winding requirements of both disc-type and solenoid-type superconducting coils, achieving dual-purpose operation without the need to switch between multiple devices, thus saving costs and operating space.
[0045] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0046] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A high-temperature superconducting magnet winding machine, characterized in that, include: Rack (14); The first pay-off reel (4) is mounted on the frame (14) and is used to output the first strip; The second pay-off reel (8) is mounted on the frame (14) and is used to output the second strip; A rotary control box (10) is rotatably mounted on the frame (14) and located downstream of the first pay-off reel (4) and the second pay-off reel (8); A lifting guide wheel (12) is mounted on the frame (14) in a lifting manner and is used to guide the first strip and / or the second strip output. A take-up reel (13) is located downstream of the lifting guide wheel (12) and is used to wind the first strip and / or the second strip. A drive mechanism is connected to the take-up reel (13) to drive the take-up reel (13) to lift, lower and rotate.
2. The high-temperature superconducting magnet winding machine according to claim 1, characterized in that, It also includes a support frame (15) which is rotatably mounted on the frame (14), and the rotation control box (10) is mounted on one end of the support frame (15).
3. The high-temperature superconducting magnet winding machine according to claim 1, characterized in that, It also includes a telescopic arm (11), which is adjustablely mounted on the frame (14) via a guide rail (16), and one end of the telescopic arm (11) is provided with a threaded hole, in which a stud is installed, and the lifting guide wheel (12) is rotatably mounted on the top of the stud.
4. The high-temperature superconducting magnet winding machine according to claim 1, characterized in that, It also includes a first tension gauge wheel (1), which is installed on the frame (14) and located between the first pay-off reel (4) and the lifting guide wheel (12). The first strip is output from the first pay-off reel (4) and passes through the first tension gauge wheel (1) before entering the lifting guide wheel (12).
5. The high-temperature superconducting magnet winding machine according to claim 4, characterized in that, It also includes a plurality of first guide wheels (3), which are mounted on the frame (14) and are spaced apart between the first tension gauge wheel (1) and the first wire feeding reel (4) for guiding the first strip.
6. The high-temperature superconducting magnet winding machine according to claim 5, characterized in that, It also includes a first cleaning device (2), which is mounted on the frame (14) and located between the first guide wheel (3) and the first tension gauge wheel (1). The first cleaning device (2) is used to clean the first strip.
7. The high-temperature superconducting magnet winding machine according to claim 1, characterized in that, It also includes a second tension gauge wheel (5), which is installed on the frame (14) and located between the second pay-off reel (8) and the lifting guide wheel (12). The second strip is output from the second pay-off reel (8) and passes through the second tension gauge wheel (5) before entering the lifting guide wheel (12).
8. The high-temperature superconducting magnet winding machine according to claim 7, characterized in that, It also includes a plurality of second guide wheels (7), which are mounted on the frame (14) and are spaced apart between the second tension gauge wheel (5) and the second feed reel (8) for guiding the second strip.
9. The high-temperature superconducting magnet winding machine according to claim 8, characterized in that, It also includes a second cleaning device (6), which is mounted on the frame (14) and located between the second guide wheel (7) and the second tension gauge wheel (5). The second cleaning device (6) is used to clean the second strip.
10. The high-temperature superconducting magnet winding machine according to any one of claims 1-9, characterized in that, It also includes a measuring wheel (9), which is mounted on the frame (14). The measuring wheel (9) is located between the first wire feeding reel (4), the second wire feeding reel (8) and the lifting guide wheel (12). The measuring wheel (9) can measure the length of the first strip and / or the second strip.