Feeding tensioning device of series welding machine

Abstract

The utility model provides a feeding tension device of a series welding machine, which comprises a rack, a plurality of adjusting units, a first sensing piece and a second sensing piece, the plurality of adjusting units are sequentially and vertically arranged on the rack, and the first sensing piece and the second sensing piece are arranged at the upper end and the lower end of the rack; the adjusting unit comprises a guide rail, a first limiting piece, a second limiting piece, a sliding piece and a rotating wheel, the first limiting piece and the second limiting piece are arranged at the upper end and the lower end of the guide rail respectively and connected with the rack, the rotating wheel is arranged on the sliding piece and can rotate relative to the sliding piece, the sliding piece is arranged on the guide rail, and the welding wire is arranged on the rotating wheel. The sliding piece ascends and descends along the guide rail and adjusts the tension of the bonding wire through the gravity of the sliding piece; the rotating wheel in each adjusting unit moves up and down in the process of stretching and conveying the bonding wires, the tension of the bonding wires is adjusted through the gravity of the sliding piece and the height of the sliding piece on the guide rail according to the curling degree of each bonding wire, and therefore it is guaranteed that the tension and flatness of the multiple bonding wires are consistent.

Description

Technical Field

[0001] This utility model relates to the field of automatic string bonding technology for solar cells, and in particular to a feeding and tensioning device for a string bonding machine. Background Technology

[0002] Solar cells are photovoltaic semiconductors that generate electricity directly from sunlight, and their applications are becoming increasingly widespread. During the automated string bonding process of solar cells, the bonding wires are typically placed in rolls, and are initially curled and mostly uneven. To ensure welding quality, the bonding wires need to be stretched and straightened during the feeding process to ensure straight segments during cutting. Currently, conventional bonding wires are conveyed via multiple fixed rollers during the onboarding process. Because the degree of curling varies among each bonding wire, the stretching effect of the fixed rollers is inconsistent. How to simultaneously convey and stretch multiple bonding wires on the same production line to achieve the same stretching effect without cross-entanglement is a technical problem that needs to be solved. Utility Model Content

[0003] The main purpose of this utility model is to overcome the above-mentioned shortcomings and deficiencies of the prior art and to provide a feeding and tensioning device for a string welding machine.

[0004] A feeding and tensioning device for a string welding machine is installed on the wire feeding module of the string welding machine for adjusting the tension of the welding wire during feeding. It includes a frame, several adjustment units, a first sensor, and a second sensor. The adjustment units are vertically mounted sequentially on the frame. The first sensor is mounted on the upper end of the frame, and the second sensor is mounted on the lower end of the frame. Each adjustment unit includes a guide rail, a first limiting member, a second limiting member, a sliding member, and a rotating wheel. The first and second limiting members are respectively mounted on the upper and lower ends of the guide rail and connected to the frame. The rotating wheel is mounted on the sliding member and can rotate relative to the sliding member. The sliding member is mounted on the guide rail, and the welding wire is placed on the rotating wheel. The sliding member moves up and down along the guide rail, and the tension of the welding wire is adjusted by the gravity of the sliding member.

[0005] In one embodiment, the frame is provided with a fixed plate, and the first sensor is mounted on the fixed plate and can move relative to the fixed plate.

[0006] In one embodiment, the fixing plate has an elongated mounting hole, and the first sensor is installed in the mounting hole and can move up and down along the mounting hole.

[0007] In one embodiment, the number of the first sensors is two, and the two first sensors are respectively disposed on both sides of the frame.

[0008] In one embodiment, the frame includes an upper mounting plate, a lower mounting plate, and two side columns, the two side columns being located between the upper mounting plate and the lower mounting plate. Both the upper mounting plate and the lower mounting plate are provided with positioning grooves, the guide rail is inserted into the positioning grooves, the first limiting member is mounted on the upper mounting plate, and the second limiting member is mounted on the lower mounting plate.

[0009] In one embodiment, an L-shaped clamping plate is mounted on the lower mounting plate, and a plurality of second sensors are mounted at the end of the clamping plate. The height of the second sensors is higher than the height of the lower mounting plate. A locking device is provided at the end of the sliding member. Each sliding member is provided with a second sensor. When the sliding member moves up and down on the guide rail, the locking device abuts against or moves away from the second sensor.

[0010] In one embodiment, the card plate is provided with a plurality of card holders, the card holders are provided with guide grooves above them, the second sensor is provided below the card holders, and the card holders pass through the guide grooves when moving up and down.

[0011] In one embodiment, the sliding member is provided with a limiting post, which is located between the rotating wheel and the guide rail.

[0012] The beneficial effects of the feeding and tensioning device of this utility model string welding machine are as follows: by setting up multiple parallel adjustment units, the roller in each adjustment unit moves up and down during the stretching and conveying of the welding wire. The tension of the welding wire is adjusted according to the curvature of each welding wire by the gravity of the sliding part and the height of the sliding part on the guide rail, thereby ensuring that the tension and flatness of multiple welding wires are consistent. The adjustment units are modularly set and installed in parallel to avoid multiple welding wires from crossing and tangling. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the feeding and tensioning device of the string welding machine of this utility model.

[0014] Figure 2 This is a schematic diagram of the feeding and tensioning device of the string welding machine of this utility model;

[0015] Figure 3 for Figure 2 An exploded structural diagram of the feeding and tensioning device of the string welding machine of this utility model;

[0016] Figure 4 for Figure 2 A schematic diagram of the adjusting unit in the feeding and tensioning device of the string welding machine of this utility model;

[0017] Figure 5 for Figure 2 A cross-sectional view of the feeding and tensioning device of the string welding machine of this utility model. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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 according to the specific circumstances.

[0022] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] This utility model discloses a feeding and tensioning device for a string welding machine, installed on the wire feeding module of the string welding machine, used for tension adjustment of the welding wire during feeding. It includes a frame, several adjustment units, a first sensor, and a second sensor. The adjustment units are vertically mounted sequentially on the frame. The first sensor is mounted on the upper end of the frame, and the second sensor is mounted on the lower end of the frame. Each adjustment unit includes a guide rail, a first limiting member, a second limiting member, a sliding member, and a rotating wheel. The first and second limiting members are respectively mounted on the upper and lower ends of the guide rail and connected to the frame. The rotating wheel is mounted on the sliding member and can rotate relative to the sliding member. The sliding member is mounted on the guide rail, and the welding wire is placed on the rotating wheel. The sliding member moves up and down along the guide rail, and the tension of the welding wire is adjusted by the gravity of the sliding member.

[0024] The feeding and tensioning device of this utility model string welding machine is equipped with multiple parallel adjustment units. The roller in each adjustment unit moves up and down during the stretching and conveying of the welding wire. The tension of the welding wire is adjusted according to the curvature of each welding wire by the gravity of the sliding part and the height of the sliding part on the guide rail, thereby ensuring that the tension and flatness of multiple welding wires are consistent. The adjustment units are modularly arranged and installed in parallel to avoid the cross-entanglement of multiple welding wires.

[0025] Example

[0026] Please see Figure 1 This utility model provides a feeding and tensioning device 100 for a string welding machine, which is set on a section before the wire feeding module 200 in the string welding machine, and is used to adjust the tension of the wire 300 and achieve the same flatness during feeding.

[0027] Please see Figures 2 to 5The feeding and tensioning device 100 of the string welding machine includes a frame 1, several adjustment units 2, a first sensor 3 and a second sensor 4. Several adjustment units 2 are vertically mounted on the frame 1 in sequence. The first sensor 3 is mounted on the upper end of the frame 1 and the second sensor 4 is mounted on the lower end of the frame 1. The adjustment unit 2 includes a guide rail 21, a first limiting member 22, a second limiting member 23, a sliding member 24 and a rotating wheel 25. The first limiting member 22 and the second limiting member 23 are respectively mounted on the upper and lower ends of the guide rail 21 and connected to the frame 1. The rotating wheel 25 is mounted on the sliding member 24 and can rotate relative to the sliding member 24. The sliding member 24 is mounted on the guide rail 21 and the welding wire 300 is located on the rotating wheel 25. The sliding member 24 moves up and down along the guide rail 21 and the tension of the welding wire 300 is adjusted by the gravity of the sliding member 24. The first sensor 3 and the second sensor 4 are used to detect the maximum vertical movement range of the sliding member 25 and feed the data back to the control module of the string welding machine for control and adjustment.

[0028] This invention employs multiple parallel adjustment units 2. In each adjustment unit 2, the rotating wheel 25 moves up and down during the stretching and conveying of the welding wire 300. The tension of each welding wire 300 is adjusted based on the gravity of the sliding member 24 and its height on the guide rail 21, according to the degree of curling of each wire, thereby ensuring consistent tension and flatness across multiple welding wires 300. The modular arrangement and parallel installation of the adjustment units 2 prevent the welding wires 300 from crossing and tangling.

[0029] For more details, please refer to Figure 2 and Figure 3 A fixed plate 5 is provided on the frame 1, and the first sensor 3 is mounted on the fixed plate 5 and can move relative to the fixed plate 5. Preferably, the fixed plate 5 has an elongated mounting hole 51, and the first sensor 3 is installed in the mounting hole 51 and can move up and down along the mounting hole 51. The position adjustment of the first sensor 3 can meet the tension monitoring and feedback adjustment of different bonding wires 300. More preferably, there are two first sensors 3, and the two first sensors 3 are respectively provided on both sides of the frame 1. The first sensor 3 is preferably an infrared sensor, but it can also be other sensors, such as a vision sensor.

[0030] For more details, please refer to Figure 3 and Figure 5 The frame 1 includes an upper mounting plate 11, a lower mounting plate 12, and two side columns 13. The two side columns 13 are located between the upper mounting plate 11 and the lower mounting plate 12. The upper mounting plate 11 and the lower mounting plate 12 are both provided with positioning grooves 14. The guide rail 21 is inserted into the positioning groove 14 to facilitate the installation and positioning of the guide rail. The first limiting member 22 is installed on the upper mounting plate 11, and the second limiting member 23 is installed on the lower mounting plate 12.

[0031] For more details, please refer to Figures 2 to 5An L-shaped clamping plate 15 is mounted on the lower mounting plate 12. Several second sensors 4 are mounted at the ends of the clamping plate 15. The height of the second sensors 4 is higher than the height of the lower mounting plate 12. A locking member 241 is provided at the end of each sliding member 24. Each sliding member 24 corresponds to one second sensor 4. When the sliding member 24 moves up and down on the guide rail 21, the locking member 241 abuts against or moves away from the second sensor 4. Preferably, there is one second sensor 4, which is an infrared sensor or a vision sensor, or other sensors. Preferably, the second sensor 4 is an infrared sensor. More preferably, the clamping plate 15 is provided with several holding members 151. A guide groove 152 is provided above the holding members 151, and the second sensors 4 are located below the holding members 151. The locking member 241 passes through the guide groove 152 when moving up and down, facilitating positioning of the locking member 241 during its movement.

[0032] For more details, please refer to Figure 4 and Figure 5 The sliding member 24 is provided with a limiting post 242, which is located between the rotating wheel 25 and the guide rail 21 to prevent the welding wire 300 from getting tangled with the end face of the guide rail 21 or the sliding member 24 during the feeding process.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A feeding and tensioning device for a string welding machine, installed on the wire feeding module of the string welding machine, used for tension adjustment of the welding wire during feeding, characterized in that, The device includes a frame, several adjustment units, a first sensor, and a second sensor. The adjustment units are vertically mounted sequentially on the frame. The first sensor is mounted on the upper end of the frame, and the second sensor is mounted on the lower end of the frame. Each adjustment unit includes a guide rail, a first limiting member, a second limiting member, a sliding member, and a rotating wheel. The first limiting member and the second limiting member are respectively mounted on the upper and lower ends of the guide rail and connected to the frame. The rotating wheel is mounted on the sliding member and can rotate relative to the sliding member. The sliding member is mounted on the guide rail, and the welding wire is located on the rotating wheel. The sliding member moves up and down along the guide rail, and the tension of the welding wire is adjusted by the gravity of the sliding member.

2. The feeding and tensioning device of the string welding machine according to claim 1, characterized in that: The frame is provided with a fixed plate, and the first sensor is mounted on the fixed plate and can move relative to the fixed plate.

3. The feeding and tensioning device of the string welding machine according to claim 2, characterized in that: The fixing plate has an elongated mounting hole, and the first sensor is installed in the mounting hole and can move up and down along the mounting hole.

4. The feeding and tensioning device of the string welding machine according to claim 2, characterized in that: The number of the first sensing elements is two, and the two first sensing elements are respectively located on both sides of the frame.

5. The feeding and tensioning device for the string welding machine according to claim 1, characterized in that: The frame includes an upper mounting plate, a lower mounting plate, and two side columns. The two side columns are located between the upper mounting plate and the lower mounting plate. Both the upper mounting plate and the lower mounting plate are provided with positioning grooves. The guide rail is inserted into the positioning grooves. The first limiting member is installed on the upper mounting plate, and the second limiting member is installed on the lower mounting plate.

6. The feeding and tensioning device of the string welding machine according to claim 5, characterized in that: The lower mounting plate is equipped with an L-shaped card plate, and a plurality of second sensors are installed at the end of the card plate. The height of the second sensors is higher than the height of the lower mounting plate. The end of the sliding member is provided with a locking member. Each sliding member is provided with a second sensor. When the sliding member moves up and down on the guide rail, the locking member abuts against or moves away from the second sensor.

7. The feeding and tensioning device for the string welding machine according to claim 6, characterized in that: The card plate is provided with a plurality of card holders, and a guide groove is provided above the card holders. The second sensor is located below the card holders, and the card holders pass through the guide grooves when moving up and down.

8. The feeding and tensioning device for the string welding machine according to claim 1, characterized in that: The sliding member is provided with a limiting post, which is located between the rotating wheel and the guide rail.

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