Automatic calibration device for optimizing wafer alignment and belt alignment of series welding machine

Abstract

The utility model relates to the technical field of photovoltaic module production, and discloses an automatic calibration device for optimizing wafer alignment and belt alignment of a series welding machine, the automatic calibration device comprises a support frame, an x-axis moving unit, a y-axis moving unit, a z-axis moving unit and a grabbing unit, the x-axis moving unit is fixed on the support frame, the z-axis moving unit is assembled on the x-axis moving unit, and the x-axis moving unit is fixed on the y-axis moving unit. The y-axis moving unit is assembled on the z-axis moving unit, and the grabbing unit is assembled on the y-axis moving unit. The series welding machine solves the problem that the welding quality of a battery piece is low due to deviation of a welding strip in an existing series welding machine.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic module production, and in particular to an automatic calibration device for optimizing the alignment of panels and strips in a string welding machine. Background Art

[0002] Currently, after the stringer straightens the cells, they are placed on the stacking table. The ribbon transporter removes and then releases the ribbon. Due to abnormal cell straightness and improper ribbon transporter positioning, ribbon deviation often occurs on the front side. Ribbon deviation can occur in two ways: single ribbon deviation and overall ribbon deviation. These types of deviation are difficult to debug, and when multiple ribbons are offset, string collisions are very likely to occur at the exit point. Furthermore, ribbon deviation on the front side can cause infrared defects such as broken grids in the finished module, impacting product quality. Utility Model Content

[0003] The purpose of this application is to provide an automatic calibration device for optimizing the alignment of cells and ribbons in a stringer, so as to solve the problem of poor cell welding quality caused by ribbon deviation in existing stringers.

[0004] In order to achieve the above purpose, the technical solutions adopted are as follows:

[0005] An automatic calibration device for optimizing sheet and tape alignment of a string welding machine comprises a support frame, an x-axis moving unit, a y-axis moving unit, a z-axis moving unit and a gripping unit, wherein the x-axis moving unit is fixed on the support frame, the z-axis moving unit is assembled on the x-axis moving unit, the y-axis moving unit is assembled on the z-axis moving unit, and the gripping unit is assembled on the y-axis moving unit.

[0006] Preferably, in the above-mentioned automatic calibration device for optimizing the pairing of sheets and tapes of the string welding machine, the x-axis moving unit includes a first telescopic cylinder, a slide, a slider, a slide rail and a slide seat; wherein, the first telescopic cylinder is connected to the slide plate, the slide plate is fixedly arranged at the upper end of the slider, the slider is movably assembled on the slide rail, the slide rail is arranged on the slide seat, and the z-axis moving unit is assembled on the slide plate.

[0007] Preferably, in the above-mentioned automatic calibration device for optimizing the alignment of sheets and strips of the string welding machine, the slide rail and the slider are provided in two, the two slide rails are parallel, a slider is movably assembled on each slide rail, and the slider is fixed to the upper ends of the two sliders.

[0008] Preferably, in the above-mentioned automatic calibration device for optimizing sheet-to-tape alignment of a stringer, the z-axis moving unit is a second telescopic cylinder, and the telescopic end of the second telescopic cylinder is connected to the y-axis moving unit.

[0009] Preferably, in the above-mentioned automatic calibration device for optimizing the alignment of sheets and tapes of the string welding machine, the y-axis moving unit includes a fixed plate and a linear motor, the fixed plate is fixed to the telescopic end of the second telescopic cylinder, the linear motor is installed on the fixed plate, and the grabbing unit is assembled on the linear motor.

[0010] Preferably, in the above-mentioned automatic calibration device for optimizing sheet-to-tape alignment of a string welding machine, the grabbing units and the linear motor are both provided in plurality, and one grabbing unit is assembled on one linear motor.

[0011] Preferably, in the above-mentioned automatic calibration device for optimizing sheet-to-tape alignment of a string welding machine, the support frame includes a first pillar, a second pillar and a cross brace, and the first pillar is connected to the second pillar through the cross brace.

[0012] Preferably, in the above-mentioned automatic calibration device for optimizing sheet-to-tape alignment of a string welding machine, the first pillar and the second pillar are respectively connected to the slide seat via a diagonal support rod.

[0013] Preferably, in the above-mentioned automatic calibration device for optimizing sheet-to-tape alignment of a string welding machine, the gripping unit is a pneumatic suction cup.

[0014] Preferably, in the above-mentioned automatic calibration device for optimizing the alignment of sheets and tapes in a string welding machine, the gripping unit is a robot.

[0015] The beneficial effects of this application are:

[0016] The present application sets an x-axis moving unit, a y-axis moving unit and a z-axis moving unit. When the grabbing unit grabs the welding ribbon, the grabbing unit can realize movement in three directions of xyz under the action of the x-axis moving unit, the y-axis moving unit and the z-axis moving unit, so that the position of the welding ribbon can be corrected to avoid welding ribbon offset and broken grid problems caused by skewed battery cells, which can greatly reduce the difficulty of machine adjustment and debugging time, and improve production efficiency and yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A front view of an automatic calibration device for optimizing sheet-to-tape alignment of a stringer according to an embodiment of the present application is shown.

[0018] Figure 2 A partial stereoscopic diagram of an automatic calibration device for optimizing sheet-to-tape alignment of a stringer according to an embodiment of the present application is shown.

[0019] Figure 3 A left view of an automatic calibration device for optimizing sheet-to-tape alignment of a stringer according to an embodiment of the present application is shown.

[0020] Figure 4A structural diagram of a y-axis moving unit in an automatic calibration device for optimizing wafer-to-tape alignment of a stringer according to an embodiment of the present application is shown.

[0021] Reference numerals:

[0022] 1. Support frame; 11. First pillar; 12. Second pillar; 13. Horizontal brace; 14. Diagonal brace;

[0023] 2. X-axis moving unit; 21. First telescopic cylinder; 22. Slide plate; 23. Slider; 24. Slide rail; 25. Slide seat;

[0024] 3. Y-axis moving unit; 31. Fixed plate; 32. Linear motor;

[0025] 4. Z-axis moving unit;

[0026] 5. Grasping unit; 51. Pneumatic suction cup; 511. Gas channel; 52. Robotic arm. DETAILED DESCRIPTION

[0027] The following describes the embodiments of the present application through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other unless they conflict.

[0028] The specific implementation of the present application is further described in detail below with reference to the accompanying drawings and examples.

[0029] The embodiment of the present application provides an automatic calibration device for optimizing the alignment of sheets and strips in a string welding machine, such as Figures 1 to 3 As shown in the figure, the x-direction, y-direction and z-direction described in the present application are shown. The automatic calibration device for optimizing the pairing of sheets and strips of the string welding machine includes a support frame 1, an x-axis moving unit 2, a y-axis moving unit 3, a z-axis moving unit 4 and a grabbing unit 5. The x-axis moving unit 2 is fixed on the support frame 1, the z-axis moving unit 4 is assembled on the x-axis moving unit 3, the y-axis moving unit 3 is assembled on the z-axis moving unit 4, and the grabbing unit 5 is assembled on the y-axis moving unit 3.

[0030] In this embodiment, the automatic calibration device of the string welding machine for optimizing the pairing of sheets and strips is mainly used for adjusting the welding strips. When there is a deviation of the welding strip, the offset welding strip is grasped by the grabbing unit 5, and the welding strip is corrected by the coordinated action of the x-axis moving unit 2, the y-axis moving unit 3, and the z-axis moving unit 4. Specifically, the welding strip is generally arranged on an xy plane (welding work plane), that is, the welding strip is not adjusted in the z direction (that is, the height direction of the welding strip). Therefore, the z-axis moving unit 4 is mainly used to adjust the height of the grabbing unit 5, that is, when the welding strip is not corrected, the y-axis moving unit 3 is driven to rise by the action of the z-axis moving unit 4, so that the grabbing unit 5 located on the y-axis moving unit 3 has a certain height relative to the welding strip (or welding work plane) and is in a retracted state. At this time, the entire automatic calibration device does not interfere with the operation of the string welding machine. In the case of a solder strip offset, first determine the position of the offset solder strip. Under the action of the x-axis moving unit 2 and the y-axis moving unit 3, the grabbing unit 5 is moved to the top of the offset solder strip. At this time, the grabbing unit 5 is driven by the z-axis moving unit 4 to descend and contact the offset solder strip and grab the offset solder strip. Then, the offset solder strip is adjusted according to the offset direction of the offset solder strip. For example, if the offset solder strip is offset in the x-direction, the grabbing unit 5 is adjusted to move in the x-direction by the x-axis moving unit 2 to correct the offset solder strip. If the offset solder strip is offset in the y-direction, the grabbing unit 5 is adjusted to move in the x-direction by the y-axis moving unit 3 to correct the offset solder strip. If the offset solder strip is offset in both the x- and y-directions, the x-axis moving unit 2 and the y-axis moving unit 3 can be adjusted simultaneously or sequentially to correct the offset solder strip. Finally, after correcting the offset solder strip, the grabbing unit 5 releases the solder strip, completing the correction of the offset solder strip. If there is no other adjustment required to offset the welding strip, the grabbing unit 5 is reset under the action of the x-axis moving unit 2 , the y-axis moving unit 3 , and the z-axis moving unit 4 .

[0031] In some embodiments, a specific structure of the x-axis moving unit is provided. Figure 2 As shown, the x-axis moving unit 2 includes a first telescopic cylinder 21, a slide 22, a slider 23, a slide rail 24 and a slide seat 25; wherein, the first telescopic cylinder 21 is connected to the slide 22, the slide 22 is fixedly arranged on the upper end of the slider 23, the slider 23 is movably assembled on the slide rail 24, the slide rail 24 is arranged on the slide seat 25, and the z-axis moving unit 4 is assembled on the slide 24.

[0032] In this embodiment, the first telescopic cylinder 21 serves as the power mechanism for the x-axis moving unit 2. Under the action of the first telescopic cylinder 21, the slide plate 22, via the slider 23, moves horizontally along the x-direction on the slide rail 24. The slide rail 24 is oriented parallel to the direction of the first telescopic cylinder 21, serving as a guide. Because the z-axis moving unit 4 is mounted on the slide plate 24, it moves in the x-direction accordingly. Simultaneously, the y-axis moving unit 3, which houses the gripping unit 5, is mounted on the z-axis moving unit 4. Therefore, the gripping unit 5 moves in the x-direction under the action of the first telescopic cylinder 21.

[0033] In some embodiments, as Figure 2 As shown, the slide rails 24 and the sliders 23 are provided in two numbers, the two slide rails 24 are parallel, one slider 23 is movably mounted on each slide rail 24 , and the slide plate 22 is fixed to the upper ends of the two sliders 23 .

[0034] In this embodiment, two slide rails 24 are used to make the guidance more stable. At the same time, the hollowing of the slide seat 25 between the two slide rails 24 can provide assembly space for the z-axis moving unit 4, making the structural layout of this application more compact.

[0035] In some embodiments, the z-axis moving unit 4 is a second telescopic cylinder, and the telescopic end of the second telescopic cylinder 4 is connected to the y-axis moving unit 3 .

[0036] In some embodiments, as Figure 3 As shown, the y-axis moving unit 3 includes a fixed plate 31 and a linear motor 32 . The fixed plate 31 is fixed to the telescopic end of the second telescopic cylinder. The linear motor 32 is installed on the fixed plate 31 . The grabbing unit 5 is assembled on the linear motor 32 .

[0037] In this embodiment, the grabbing unit 5 can move horizontally along the y direction under the action of the linear motor 32.

[0038] In some embodiments, as Figure 4 As shown, the grabbing unit 5 and the linear motor 32 are both provided in plurality, and one grabbing unit 5 is assembled on one linear motor 32 .

[0039] In this embodiment, considering that most of the current offset solder strips are concentrated in the y-direction, a plurality of grabbing units 5 with adjustable spacing in the y-direction are provided for this situation, so that the device can grab a plurality of offset solder strips at a time, and the movement stroke in the y-direction of each grabbing unit 5 is independently adjustable. In this way, when there are multiple solder strips offset in the y-direction, this embodiment can make adjustments at one time, with higher correction efficiency.

[0040] In some embodiments, the support frame 1 includes a first pillar 11, a second pillar 12 and a cross brace 13. The first pillar 11 is connected to the second pillar 12 through the cross brace 13. The first pillar 11 and the second pillar 12 are respectively connected to the slide 25 through a diagonal brace rod 14.

[0041] In this embodiment, considering that the gripping unit 5 is assembled on the y-axis moving unit 3, which is in turn assembled on the z-axis moving unit 4, which is in turn assembled on the x-axis moving unit 2, the stability of the entire x-axis moving unit 2 is fundamental to the stability of the entire device. Therefore, in this embodiment, by providing a first support 11 and a second support 12, the first support 11 and the second support 12 are utilized to stably mount the first telescopic cylinder 21. The first support 11 and the second support 12 are connected to the slide 25 via a diagonal brace 14, thereby ensuring the overall stability of the x-axis moving unit 2, thereby making the entire device structure relatively stable.

[0042] In some embodiments, the gripping unit 5 may be a pneumatic suction cup 51 or a manipulator 52. The structure of the pneumatic suction cup 51 is as follows: Figure 4 As shown, the pneumatic suction cup 51 is connected to the air pump through the gas channel 511 provided thereon to generate negative pressure, thereby adsorbing the welding strip. The structure of the manipulator 52 can be referred to Figure 3 As shown, the robot arm 52 grabs the welding strip in a grabbing manner.

[0043] The above implementation modes are only used to illustrate the present application and are not intended to limit the present application. Ordinary technicians in the relevant technical field may make various changes and modifications without departing from the spirit and scope of the present application. Therefore, all equivalent technical solutions also fall within the scope of the present application, and the scope of patent protection of the present application shall be defined by the claims.

Claims

1. An automatic calibration device for optimizing the alignment of sheets and strips on a string welding machine, characterized in that: The invention comprises a support frame, an x-axis moving unit, a y-axis moving unit, a z-axis moving unit and a grasping unit, wherein the x-axis moving unit is fixed on the support frame, the z-axis moving unit is assembled on the x-axis moving unit, the y-axis moving unit is assembled on the z-axis moving unit, and the grasping unit is assembled on the y-axis moving unit.

2. The automatic calibration device for optimizing the alignment of sheets and tapes for a stringer according to claim 1, characterized in that: The x-axis moving unit includes a first telescopic cylinder, a slide, a slider, a slide rail and a slide seat; wherein, the first telescopic cylinder is connected to the slide, the slide is fixedly arranged on the upper end of the slider, the slider is movably assembled on the slide rail, the slide rail is arranged on the slide seat, and the z-axis moving unit is assembled on the slide.

3. The automatic calibration device for optimizing the alignment of sheets and tapes for a stringer according to claim 2, characterized in that: The slide rail and the slider are provided in two numbers, the two slide rails are parallel, one slider is movably assembled on each slide rail, and the slider is fixed to the upper ends of the two sliders.

4. The automatic calibration device for optimizing the alignment of sheets and tapes for a stringer according to claim 3, characterized in that: The z-axis moving unit is a second telescopic cylinder, and the telescopic end of the second telescopic cylinder is connected to the y-axis moving unit.

5. The automatic calibration device for optimizing the alignment of sheets and tapes for a stringer according to claim 4, characterized in that: The y-axis moving unit includes a fixed plate and a linear motor. The fixed plate is fixed to the telescopic end of the second telescopic cylinder. The linear motor is installed on the fixed plate. The grabbing unit is assembled on the linear motor.

6. The automatic calibration device for optimizing the alignment of sheets and tapes for a stringer according to claim 5, characterized in that: The grabbing units and the linear motor are both provided in plurality, and one grabbing unit is assembled on one linear motor.

7. The automatic calibration device for optimizing the alignment of sheets and tapes for a stringer according to claim 2, characterized in that: The support frame includes a first pillar, a second pillar and a cross brace, and the first pillar is connected to the second pillar through the cross brace.

8. The automatic calibration device for optimizing the alignment of sheets and tapes for a stringer according to claim 7, characterized in that: The first support column and the second support column are respectively connected to the slide seat through an oblique support rod.

9. The automatic calibration device for optimizing sheet-to-tape alignment of a stringer according to any one of claims 1 to 8, characterized in that: The grabbing unit is a pneumatic suction cup.

10. The automatic calibration device for optimizing sheet-to-tape alignment of a stringer according to any one of claims 1 to 8, characterized in that: The grasping unit is a robot arm.

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