Photovoltaic solder strip on-line thickness detection device

Abstract

The utility model relates to photovoltaic welding band production technical field, concretely relates to a kind of photovoltaic welding band online thickness detection device, especially applicable to photovoltaic welding band calender integrated machine equipment.The utility model provides a kind of photovoltaic welding band online thickness detection device;The thickness detection device includes bottom plate, drive mechanism is arranged on the bottom plate, detection assembly is connected on the drive mechanism, the drive mechanism is used to control detection assembly to swing left and right along its width direction in the two outer sides of copper band;The detection assembly includes test block and the connecting piece fixedly connected with it, the connecting piece is connected with drive mechanism, the passageway for copper band to be conveyed to take-up mechanism is set on the test block, detector is arranged on the two sides along passageway on the test block.The utility model measurement result is accurate, easy to realize, solves the problem that the prior art measurement is not intuitive enough, and there is error in the measurement thickness.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic welding strip production technology, specifically to an online thickness detection device for photovoltaic welding strip, which is particularly suitable for photovoltaic welding strip calendering integrated equipment. Background Technology

[0002] Photovoltaic solder ribbon, also known as tin-plated copper ribbon or tin-coated copper ribbon, comes in two forms: busbars and interconnects. It is used to connect the cells of photovoltaic modules, playing a crucial role in conductivity and current collection. Solder ribbon is a vital raw material in the photovoltaic module welding process; its quality directly affects the current collection efficiency of the photovoltaic module, significantly impacting its power output.

[0003] Integrated strip rolling machines for the solar photovoltaic industry primarily produce copper strip before tin coating for photovoltaic strips. During the copper strip rolling process, the thickness measurement of the copper strip is crucial, directly affecting the finished size of the photovoltaic strip. Existing methods for measuring copper strip thickness mainly include the following two:

[0004] (1) Indirect detection of copper strip thickness by width detection: mainly using the cross-sectional area and width of the copper strip, the thickness of the copper strip is calculated.

[0005] (2) Thickness measurement is carried out directly by installing a fixed thickness measuring instrument.

[0006] However, both of the above methods have the following drawbacks:

[0007] 1. The main disadvantage of indirectly detecting copper strip thickness through width measurement:

[0008] (1) The measurement is not intuitive enough and the thickness of the copper strip cannot be obtained directly;

[0009] (2) The copper strip thickness calculated by the cross-sectional area and width is affected by the tension before and after the rolling unit and the ductility of the copper material itself. The calculated copper strip thickness may be too large or too small, which seriously affects the copper strip size and thus the finished size of the photovoltaic welding strip.

[0010] 2. The main disadvantages of directly measuring thickness by installing a fixed thickness gauge:

[0011] In the online production of copper strips with a large width / thickness ratio (width / thickness ≥ 5) or a thin copper strip (thickness 0.05~0.40mm), the production measurement of the copper strip is in a dynamic process. During the rolling and conveying of the copper strip, there is an irregular tilt, which makes it impossible to ensure that the copper strip is perpendicular to the light source of the thickness measuring instrument during the dynamic conveying process. Therefore, the data fed back from the thickness measuring instrument is often greater than the actual thickness of the copper strip.

[0012] In view of the above, this utility model is hereby proposed. Utility Model Content

[0013] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a solution.

[0014] The objective of this utility model is achieved through the following technical solution:

[0015] This utility model provides an online thickness detection device for photovoltaic welding strips. The thickness detection device is installed on a photovoltaic welding strip calendering equipment. The photovoltaic welding strip calendering equipment includes a wire feeding mechanism, a calendering mechanism, and a wire take-up mechanism arranged in sequence. The thickness detection device is located between the calendering mechanism and the take-up mechanism.

[0016] The thickness detection device includes a base plate, on which a driving mechanism is provided. A detection component is connected to the driving mechanism. The driving mechanism is used to control the detection component to swing left and right along the width direction on both sides of the copper strip. The detection component includes a test block and a connector fixedly connected to it. The connector is connected to the driving mechanism. The test block has a channel for conveying the copper strip to the take-up mechanism. Detectors are provided on both sides of the channel on the test block.

[0017] Furthermore, the detector includes a laser emitter and a laser receiver, with the laser emitter disposed on one side of the test block and the laser receiver disposed on the corresponding other side, and the copper strip being transported between the laser emitter and the laser receiver.

[0018] Furthermore, the drive mechanism includes a motor mounting bracket and a support base connected to the base plate, and a shaft is rotatably connected between the motor mounting bracket and the support base. One end of the shaft is connected to the output shaft of a servo motor, the servo motor is connected to the motor mounting bracket, and the connecting piece is connected to the shaft.

[0019] Furthermore, the connector is a ring-shaped structure, which is fixedly connected to the outer circumference of the shaft.

[0020] Furthermore, the upper part of the support base has a first circular hole, and the shaft is installed in the first circular hole through a bearing.

[0021] Furthermore, the test block oscillates periodically under the control of a servo motor, with the oscillation angle ranging from -5° to +5° with the copper strip as the origin.

[0022] Furthermore, the upper part of the motor mounting bracket has a second circular hole parallel to the first circular hole, and the shaft passes through the second circular hole via a coupling and is connected to the output shaft of the servo motor.

[0023] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0024] This invention relates to a thickness detection device applicable to photovoltaic strip rolling integrated machines. During operation, the equipment conveys the copper strip forward via a feeding mechanism, a rolling mechanism, and a take-up mechanism. As the copper strip passes through the thickness detection device, the test block, laser emitter, and laser receiver within the thickness detection unit periodically oscillate under servo motor control (oscillating around the copper strip as the origin, with an angle of -5° to +5°). Based on the width of laser beam obstruction displayed by the laser emitter and receiver, the two minimum values ​​within one cycle are taken as the measured copper strip thickness. The measurement results are accurate and easy to implement, solving the problems of insufficient intuitiveness and measurement errors in existing technologies. Attached Figure Description

[0025] The accompanying drawings are incorporated in and form part of this specification, and together with the description, serve to explain the principles of this invention.

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the thickness detection device of this utility model installed on a photovoltaic ribbon rolling equipment;

[0028] Figure 2 for Figure 1 The main view;

[0029] Figure 3 This is a schematic diagram of the thickness detection device of this utility model when it is swinging.

[0030] Wherein: 1 is the thickness detection device; 2 is the rolling mechanism; 3 is the take-up mechanism; 4 is the pay-off mechanism; 11 is the base plate; 12 is the drive mechanism; 13 is the detection component; 131 is the test block; 132 is the connector; 133 is the detector; 121 is the motor mounting bracket; 122 is the support base; 123 is the shaft; 124 is the servo motor; 1331 is the laser emitter; 1332 is the laser receiver; A is the copper strip. Detailed Implementation

[0031] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses consistent with some aspects of this invention as detailed in the appended claims.

[0032] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0033] See Figures 1-3 This utility model provides an online thickness detection device for photovoltaic welding strips. The thickness detection device 1 is installed on a photovoltaic welding strip rolling equipment. The photovoltaic welding strip rolling equipment includes a wire feeding mechanism 4, a rolling mechanism 2, and a wire taking-up mechanism 3 arranged sequentially from left to right. The thickness detection device 1 is located between the rolling mechanism 2 and the wire taking-up mechanism 3.

[0034] The thickness detection device 1 includes a base plate 11, which is fixed on a photovoltaic ribbon rolling equipment. A driving mechanism 12 is provided on the base plate 11, and a detection component 13 is connected to the driving mechanism 12. The driving mechanism 12 is used to control the detection component 13 to swing left and right along the width direction on both sides of the copper strip A. The detection component 13 includes a test block 131 and a connector 132 connected to it. The connector 132 is connected to the driving mechanism 12. The top of the test block 131 has a channel for conveying the copper strip A to the take-up mechanism 3. Detectors 133 are provided on the test block 131 along both sides of the channel.

[0035] The test block 131 and the connector 132 can be fixed by welding or by integral molding; the fixing method is not limited here.

[0036] Furthermore, the detector 133 includes a laser emitter 1331 and a laser receiver 1332. The laser emitter 1331 is fixed to one side of the test block 131, and the laser receiver 1332 is fixed to the corresponding other side. The copper strip A is transported between the laser emitter 1331 and the laser receiver 1332. Specifically, the installation height and correspondence of the laser receiver 1332 and the laser emitter 1331 can be set according to the requirements of laser measurement dimensions.

[0037] Furthermore, the drive mechanism 12 includes a motor mounting bracket 121 and a support base 122 bolted to the base plate 11. An optical shaft 123 is rotatably connected between the motor mounting bracket 121 and the support base 122. One end of the optical shaft 123 is connected to the output shaft of a servo motor 124. The servo motor 124 is connected to the motor mounting bracket 121. The connector 132 is connected to the optical shaft 123.

[0038] Furthermore, the connector 132 is a ring-shaped structure, which is fixedly connected to the outer periphery of the optical axis 123, and the two are connected by a key.

[0039] Furthermore, the upper part of the support base 122 has a first circular hole, and the optical axis 123 is installed in the first circular hole through a bearing.

[0040] Furthermore, the upper part of the motor mounting bracket 121 has a second circular hole parallel to the first circular hole, and the optical shaft 123 is connected to the output shaft of the servo motor 124 through the second circular hole via a coupling.

[0041] Specifically, such as Figure 1 , 2 As shown, the motor mounting bracket 121 includes an integrally formed horizontal plate and a vertical plate. The horizontal plate is connected to the base plate 11 by bolts. A frame for placing the servo motor 124 is fixedly connected to the outer side of the vertical plate, and the frame is fixedly connected to the vertical plate by bolts. A second circular hole is formed in the upper part of the vertical plate, through which the optical shaft 123 passes and is connected to the output shaft of the servo motor 124 via a coupling. This mounting bracket 121 has the same horizontal and vertical plates as the motor mounting bracket 121, and its horizontal plate is connected to the base plate 11 in the same way. A first circular hole parallel to the second circular hole is formed in the upper part of the vertical plate to ensure that the optical shaft 123 is parallel after installation. The optical shaft 123 is mounted in the first circular hole via a bearing.

[0042] like Figure 3 As shown, the test block 131 oscillates periodically under the control of the servo motor 124, with the oscillation angle range of -5° to +5° with copper strip A as the origin.

[0043] The usage process of this utility model is as follows:

[0044] When the photovoltaic strip welding and rolling integrated machine is working, the copper strip A is conveyed forward through the operation of the feeding mechanism 4, the rolling mechanism 2, and the take-up mechanism 3. When the copper strip A passes through the thickness detection device 1, the servo motor 124 performs forward and reverse rotation under the PCL control of the photovoltaic strip welding and rolling integrated machine. Furthermore, the servo motor 124 drives the connector 132 and the test block 131 to oscillate periodically left and right around the copper strip A as the origin. The oscillation angle is set to -5° to +5°, and the oscillation frequency is 10 to 100 times / min. During the oscillation, based on the width of the laser blocked as displayed by the laser emitter 1331 and the laser receiver 1332, the two minimum values ​​within one cycle are taken. This minimum value is the measured thickness of the copper strip A.

[0045] It should be noted that one cycle is 0°, -5°, 5°, 0°, or 0°, 5°, -5°, 0°. Within one cycle, copper strip A is continuously conveyed forward, thus allowing for the measurement of thickness values ​​at two different locations. Because copper strip A is always conveyed forward, existing technologies struggle to achieve balance with the light source, leading to measurement errors. This invention utilizes a thickness detection device that oscillates periodically. During this oscillation, the light source and copper strip A are balanced at least once. If they are not balanced, the measured thickness value is larger than the actual thickness of copper strip A. Therefore, the minimum value is taken as the actual thickness of copper strip A, ensuring accurate measurement results.

[0046] It should be added that the laser emitter 1331 and laser receiver 1332 are connected to the PLC controller of the photovoltaic strip rolling integrated machine. When the laser emitter 1331 and laser receiver 1332 are performing online real-time detection, they can feed back the detection data to the display screen of the PLC controller in real time. In addition, the operator sets the tolerance range according to the thickness requirements of the copper strip A being produced. Specifically, in this embodiment, the tolerance range is -0.002 to 0.002 mm. If the measured thickness exceeds the tolerance range, the pressing amount of the rolling mechanism 2 is adjusted, thereby realizing online real-time adjustment of the thickness value of the rolled copper strip A, ensuring the thickness dimensional requirements of the copper strip A.

[0047] In the above embodiments, the size range of copper strip A is width / thickness ≥ 5 or thickness 0.05~0.40mm.

[0048] The above description is merely a specific embodiment of this utility model, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this utility model.

[0049] It should be understood that this utility model is not limited to the content already described above, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. An online thickness detection device for photovoltaic welding strips, characterized in that, The thickness detection device (1) is installed on the photovoltaic ribbon rolling equipment. The photovoltaic ribbon rolling equipment includes a wire feeding mechanism (4), a rolling mechanism (2) and a wire taking-up mechanism (3) arranged in sequence. The thickness detection device (1) is located between the rolling mechanism (2) and the wire taking-up mechanism (3). The thickness detection device (1) includes a base plate (11), a drive mechanism (12) is provided on the base plate (11), and a detection component (13) is connected to the drive mechanism (12). The drive mechanism (12) is used to control the detection component (13) to swing left and right along the width direction on both sides of the copper strip (A). The detection component (13) includes a test block (131) and a connector (132) fixedly connected to it. The connector (132) is connected to the drive mechanism (12). The test block (131) has a channel for conveying the copper strip (A) to the take-up mechanism (3). Detectors (133) are provided on the test block (131) along both sides of the channel.

2. The photovoltaic ribbon online thickness detection device according to claim 1, characterized in that, The detector (133) includes a laser emitter (1331) and a laser receiver (1332). The laser emitter (1331) is disposed on one side of the test block (131), and the laser receiver (1332) is disposed on the corresponding other side. The copper strip (A) is transported between the laser emitter (1331) and the laser receiver (1332).

3. The photovoltaic ribbon online thickness detection device according to claim 1, characterized in that, The drive mechanism (12) includes a motor mounting bracket (121) and a support base (122) connected to the base plate (11). A shaft (123) is rotatably connected between the motor mounting bracket (121) and the support base (122). One end of the shaft (123) is connected to the output shaft of a servo motor (124). The servo motor (124) is connected to the motor mounting bracket (121). The connector (132) is connected to the shaft (123).

4. The photovoltaic ribbon online thickness detection device according to claim 3, characterized in that, The connector (132) is a ring-shaped structure and is fixedly connected to the outer periphery of the shaft (123).

5. The photovoltaic ribbon online thickness detection device according to claim 3, characterized in that, The upper part of the support base (122) has a first circular hole, and the shaft (123) is installed in the first circular hole through a bearing.

6. The photovoltaic ribbon online thickness detection device according to claim 3, characterized in that, The test block (131) oscillates periodically under the control of the servo motor (124), with the oscillation angle range of -5° to +5° with the copper strip (A) as the origin.

7. The photovoltaic ribbon online thickness detection device according to claim 3, characterized in that, The upper part of the motor mounting bracket (121) has a second circular hole parallel to the first circular hole, and the shaft (123) passes through the second circular hole through a coupling and is connected to the output shaft of the servo motor (124).

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