Semi-automatic stitch welding machine

Abstract

The invention discloses a semi-automatic stitch welding machine, and relates to the technical field of photovoltaic cell production, the semi-automatic stitch welding machine comprises a rack, a conveyor belt for conveying a glass plate and a welding assembly for welding a bus bar and a string material, the rack is provided with a shell, the shell is provided with a control panel, and the conveyor belt and the welding assembly are both installed on the rack. The welding assembly stretches across the conveying belt, a glass plate is placed on the conveying belt through external equipment or manual work, a bus bar and a string material are sequentially placed on the glass plate, and the welding assembly conducts electromagnetic welding on the bus bar and the string material through the electromagnetic welding technology. Compared with a mode of manually welding the bus bar and the stringing material, the mode of welding the bus bar and the stringing material by adopting the welding assembly is more time-saving and labor-saving, and automation and high efficiency are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic cell production, in particular to a semi-automatic stack welding machine. Background Art

[0002] As photovoltaic technology develops towards high efficiency and scale, cells have become an indispensable part of solar cell modules. In the production and manufacturing process of cells, the welding of busbars and cell strings is one of the core processes. Traditional manual welding and current automated equipment have certain limitations.

[0003] Manual operation requires manual cutting of solder strips, positioning of battery strings, arrangement of insulating pads, and point-by-point welding. The process is cumbersome, time-consuming, and the quality is unstable. During the welding process, cold solder joints, solder point offsets, or solder strips fall off are prone to occur, resulting in increased component resistance or failure. Although automated equipment has high production efficiency, it occupies a large space, is costly, and is complex to maintain. Summary of the invention

[0004] The object of the present invention is to provide a semi-automatic stitch welding machine to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a semi-automatic stitch welding machine, comprising a shell, a control panel installed on the shell, a frame, a conveyor belt for conveying glass plates, and a welding assembly for welding busbars and string materials, the shell is installed on the frame, the conveyor belt and the welding assembly are both installed on the frame, the welding assembly spans the conveyor belt, and the welding assembly welds the busbars and string materials on the glass plate. The glass plate is placed on the conveyor belt by external equipment or manually, and the busbars and string materials are placed on the glass plate in turn, and the welding assembly uses electromagnetic welding technology to electromagnetically weld the busbars and string materials. Compared with the method of manually welding the busbars and string materials, the method of welding the busbars and string materials by using welding assemblies is more time-saving and labor-saving, as well as automated and efficient.

[0006] The conveyor belt includes a narrow conveyor belt and a wide conveyor belt, and the narrow conveyor belt is used alone or in combination with the wide conveyor belt to convey the glass plate. According to production conditions, glass plates of different specifications and sizes are used. When a narrow glass plate is used, the narrow conveyor belt conveys the narrow glass plate, and when a wide glass plate is used, the narrow conveyor belt and the wide conveyor belt cooperate to convey the wide glass plate.

[0007] Two positioning cylinders are symmetrically arranged on the inner side of one end of the narrow conveyor belt. The positioning cylinder blocks the glass plate by means of a short shaft installed at the end of the cylinder rod. A limit switch is arranged on the inner side of the narrow conveyor belt near the positioning cylinder. The limit switch detects the position of the glass plate. When the glass plate is detected, the control system drives the positioning cylinder to work. The positioning cylinder blocks the glass plate by means of the short shaft, so that the glass plate stays on the narrow conveyor belt or the narrow conveyor belt and the wide conveyor belt. After waiting for the welding to be completed, the positioning cylinder retracts the cylinder rod, so that the short shaft moves away from the front of the glass plate and is lower than the height of the glass plate, so that the glass plate can leave the semi-automatic welding machine with the battery cells formed by welding.

[0008] The outer side of the narrow conveyor belt is provided with an "L"-shaped support and a side support with adjustable position. The "L"-shaped support corresponds to the position of the side support and is respectively distributed on both sides of the narrow conveyor belt. A correction cylinder is installed on the side support. A base is installed on the cylinder rod of the correction cylinder. Removable correction wheels are installed on the upper end of the base and the "L"-shaped support. The side support is used to support the installation of the correction cylinder. The correction cylinder is a cylinder. When the glass plate moves on the conveyor belt, in order to prevent the position of the glass plate from being offset, the correction wheel on the correction cylinder cooperates with the correction wheel on the "L"-shaped support to correct the position of the glass plate. When a narrow conveyor belt is used, the correction wheels on both sides of the narrow conveyor belt are used; when a narrow conveyor belt and a wide conveyor belt are used, the correction wheels on the correction cylinder on the narrow conveyor belt need to be removed, and the "L"-shaped support on the narrow conveyor belt and the correction cylinder on the wide conveyor belt are used in cooperation with each other to correct the glass plate through the correction wheels. The side support and correction cylinder on the wide conveyor belt are not drawn in the figure.

[0009] The structural setting of the wide conveyor belt is the same as that of the narrow conveyor belt. The difference between the structural setting of the wide conveyor belt and the narrow conveyor belt is that the overall width of the wide conveyor belt is greater than that of the narrow conveyor belt, and no "L"-shaped support is provided on the wide conveyor belt. When there are multiple wide conveyor belts, except for the correction wheels on the correction cylinders on the wide conveyor belts at the edge positions, the correction wheels on the wide conveyor belts at other positions need to be removed, in order to prevent the correction wheels from blocking the conveyance of the glass sheet.

[0010] The narrow conveyor belt is installed on the frame through an "L"-shaped bracket. A plurality of adjustment rails are installed on the frame. A plurality of sliders are slidably installed on the adjustment rails. The wide conveyor belt is installed on the adjustment rails through sliders. When the position of the wide conveyor belt is adjusted according to production requirements, the position of the slider on the adjustment rail is adjusted to achieve the adjustment of the position of the wide conveyor belt.

[0011] The welding assembly includes a synchronous belt and a slide rail symmetrically installed at both ends of the frame. The slide rail is located on one side of the synchronous belt. The slide rail is connected to a support frame through a slider. The support frame is connected to a section of the synchronous belt through a sheet metal. A vertical module is installed on the support frame. The two vertical modules cooperate with each other to install a mounting frame through a slide. A plurality of welding parts are installed on the mounting frame. The welding parts weld the busbar and the string material through the principle of electromagnetic induction welding. The synchronous belt drives the vertical module to move in one direction through the support frame. The slide rail and the slider provide support for the smooth sliding of the support frame. The vertical module drives the welding parts to move up and down through the mounting frame, so that the welding parts are close to the busbar and the string material to achieve welding or away from the busbar and the string material after welding. The synchronous belt and the vertical module cooperate with each other to weld the busbar and the string material at different positions on the glass plate.

[0012] The mounting frame is provided with a plurality of bottom plates, on which a pin is slidably mounted through a pad, a buffer spring is sleeved on the pin, one end of the pin is connected with a buffer plate, the buffer spring is located between the buffer plate and the pad, and the welded part is connected with the buffer plate. When the vertical module drives the welded part to descend through the mounting frame, the buffer plate buffers the contact between the welded part and the busbar and the string material through the buffer spring, so as to prevent the welded part from having a hard contact with the busbar and the string material.

[0013] A hand valve is installed on the bottom plate, and the hand valve connects the external cooling system and the weldment in series through a pipeline. The hand valve allows the cooling gas to flow between the cooling system and the weldment. When the weldment is welding the busbar and the string material, heat is generated. The cooling gas introduced by the external cooling system is used to cool the weldment. When one or several weldments are not in use, the hand valve needs to be manually closed to cut off the flow path of the cooling gas.

[0014] The bottom of the frame is equipped with universal wheels and lifting feet. When the lifting feet are folded, the universal wheels are in contact with the ground. The lifting feet are lifted and lowered by threaded connection between a screw rod and a nut. After the semi-automatic stitch welding machine is moved into position by the universal wheels, the screw rod is screwed to gradually lower the lifting feet until the semi-automatic stitch welding machine is lifted up and the universal wheels are off the ground.

[0015] Compared with the prior art, the invention has the following beneficial effects: according to production requirements and factory conditions, external equipment or manual labor can be flexibly selected to place the busbar and the string material on the glass plate in sequence. In addition, the welding assembly in the semi-automatic stitch welding machine uses electromagnetic welding technology to electromagnetically weld the busbar and the string material. Compared with the method of manually welding the busbar and the string material, the method of using the welding assembly to weld the busbar and the string material is more time-saving, labor-saving, automated and efficient.

[0016] The semi-automatic stitch welding machine achieves a balance between efficiency and economy through human-machine collaboration or collaboration with external equipment, and is suitable for production lines of various sizes.

[0017] Narrow conveyor belts and wide conveyor belts are provided. When using glass plates of different specifications and sizes, the narrow conveyor belt or / and wide conveyor belt can be flexibly selected according to the production situation. When using narrow glass plates, the narrow conveyor belt conveys the narrow glass plates, and when using wide glass plates, the narrow conveyor belt and the wide conveyor belt cooperate to convey the wide glass plates. By setting the narrow conveyor belt and the wide conveyor belt, the adaptability to the change of glass plate size and the applicability of the semi-automatic stitch welding machine are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 A three-dimensional image without the outer shell and glass panel;

[0020] Figure 3 It is a partial stereoscopic view of the connection between the narrow conveyor belt and the frame of the present invention;

[0021] Figure 4 For the present invention Figure 3 A partial enlarged view of the middle A area;

[0022] Figure 5 It is a partial stereoscopic view of the connection between the wide conveyor belt and the frame of the present invention;

[0023] Figure 6 A three-dimensional diagram of the mounting frame of the present invention connecting the welded parts and the vertical mold assembly;

[0024] Figure 7 This is a three-dimensional diagram of the connection between the welding piece and the mounting frame of the present invention.

[0025] In the figure: 1. Frame; 2. Shell; 3. Glass plate; 4. Vertical module; 5. Welding parts; 6. Narrow conveyor belt; 7. Wide conveyor belt; 8. Synchronous belt; 9. Mounting frame; 10. Adjustment rail; 11. Slide rail; 12. Side bracket; 13. Correction cylinder; 14. Correction wheel; 15. In-position cylinder; 16. Limit switch; 17. Hand valve; 18. Bottom plate; 19. Buffer plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example: Figure 1 - Figure 7As shown, the present invention provides a technical solution, a semi-automatic stitch welding machine, comprising a frame 1, a shell 2, a conveyor belt for conveying a glass plate 3, and a welding assembly for welding a busbar and a string material, the shell 2 is mounted on the frame 1, a control panel is mounted on the shell 2, a universal wheel and a lifting foot are mounted at the bottom of the frame 1, and when the lifting foot is retracted, the universal wheel is in contact with the ground. The lifting foot is lifted and lowered by a threaded connection between a screw and a nut. After the semi-automatic stitch welding machine is moved into position by the universal wheel, the screw is turned to gradually lower the lifting foot until the semi-automatic stitch welding machine is lifted up and the universal wheel is off the ground.

[0028] The conveyor belt and the welding assembly are both installed on the frame 1 . The welding assembly spans across the conveyor belt, and the welding assembly welds the busbars and the string material on the glass plate 3 .

[0029] The conveyor belt includes a narrow conveyor belt 6 and a wide conveyor belt 7. The narrow conveyor belt 6 is used alone or in combination with the wide conveyor belt 7 to convey the glass plate 3. According to production conditions, glass plates 3 of different specifications and sizes are used. When a narrow glass plate is used, the narrow conveyor belt 6 conveys the narrow glass plate. When a wide glass plate is used, the narrow conveyor belt 6 and the wide conveyor belt 7 cooperate to convey the wide glass plate.

[0030] Two in-position cylinders 15 are symmetrically arranged on the inner side of one end of the narrow conveyor belt 6. The in-position cylinders 15 use the short shaft installed at the end of the cylinder rod to block the glass plate 3. A limit switch 16 is arranged on the inner side of the narrow conveyor belt 6 near the in-position cylinder 15. The limit switch 16 detects the position of the glass plate 3. When the limit switch 16 detects the position of the glass plate 3, the control system drives the in-position cylinder 15 to work. The in-position cylinder 15 blocks the glass plate 3 through the short shaft, so that the glass plate 3 stays on the narrow conveyor belt 6 or the narrow conveyor belt 6 and the wide conveyor belt 7. After waiting for the welding to be completed, the in-position cylinder 15 retracts the cylinder rod so that the short shaft moves away from the front of the glass plate 3 and is lower than the height of the glass plate 3, so that the glass plate 3 can leave the semi-automatic welding machine with the battery cells formed by welding.

[0031] An "L"-shaped support and a side support 12 with adjustable positions are arranged on the outside of the narrow conveyor belt 6. The "L"-shaped support corresponds to the side support 12 and is respectively distributed on both sides of the narrow conveyor belt 6. A correction cylinder 13 is installed on the side support 12. A base is installed on the cylinder rod of the correction cylinder 13. A detachable correction wheel 14 is installed on the upper end of the base and the "L"-shaped support. The side support 12 is used to support the installation of the correction cylinder 13. The correction cylinder 13 is a pneumatic cylinder. When the glass plate 3 moves on the conveyor belt, in order to prevent the position of the glass plate 3 from being offset, the correction wheel 14 on the correction cylinder 13 cooperates with the correction wheel 14 on the "L"-shaped support to correct the position of the glass plate 3. When a narrow conveyor belt 6 is used, the correction wheels 14 on both sides of the narrow conveyor belt 6 are used; when a narrow conveyor belt 6 and a wide conveyor belt 7 are used, the correction wheels 14 on the correction cylinder 13 on the narrow conveyor belt 6 need to be removed, and the "L"-shaped support on the narrow conveyor belt 6 and the correction cylinder 13 on the wide conveyor belt 7 are used in conjunction with each other to correct the glass plate 3 through the correction wheels 14.

[0032] The narrow conveyor belt 6 is installed on the frame 1 through an "L"-shaped bracket. A plurality of adjustment rails 10 are installed on the frame 1. A plurality of sliders are slidably installed on the adjustment rails 10. The wide conveyor belt 7 is installed on the adjustment rails 10 through sliders.

[0033] The structural setting of the wide conveyor belt 7 is the same as that of the narrow conveyor belt 6. The structural setting of the wide conveyor belt 7 and the narrow conveyor belt 6 are different in that the overall width of the wide conveyor belt 7 is greater than the overall width of the narrow conveyor belt 6, and no "L"-shaped support is provided on the wide conveyor belt 7. When there are multiple wide conveyor belts 7, except for the correction wheels 14 on the correction cylinders 13 on the wide conveyor belts 7 at the edge positions, the correction wheels 14 on the wide conveyor belts 7 at other positions need to be removed, in order to prevent the correction wheels 14 from blocking the conveyance of the glass plate 3.

[0034] The wide conveyor belt 7 is slidably installed on the adjustment rail 10 through a slider. When the position of the wide conveyor belt 7 is adjusted according to production requirements, the position of the slider on the adjustment rail 10 is adjusted to achieve the adjustment of the position of the wide conveyor belt 7.

[0035] The welding assembly includes a synchronous belt 8 and a slide rail 11 symmetrically installed at both ends of the frame 1. The slide rail 11 is located on one side of the synchronous belt 8. The slide rail 11 is connected to a support frame through a slider. The support frame is connected to a section of the synchronous belt 8 through a sheet metal. A vertical mold group 4 is installed on the support frame. Two vertical mold groups 4 cooperate with each other to install a mounting frame 9 through a slide. A plurality of welding parts 5 are installed on the mounting frame 9. The welding parts 5 weld the busbar and the string material through the principle of electromagnetic induction welding. The synchronous belt 8 drives the vertical mold group 4 to move in one direction through the support frame. The slide rail 11 and the slider provide support for the smooth sliding of the support frame. The vertical mold group 4 drives the welding parts 5 to move up and down through the mounting frame 9, so that the welding parts 5 are close to the busbar and the string material to achieve welding or away from the busbar and the string material after welding. The synchronous belt 8 and the vertical mold group 4 cooperate with each other to weld the busbar and the string material at different positions on the glass plate 3.

[0036] A plurality of bottom plates 18 are mounted on the mounting frame 9, and a pin is slidably mounted on the bottom plate 18 through a pad, a buffer spring is sleeved on the pin, and a buffer plate 19 is connected to one end of the pin, and the buffer spring is located between the buffer plate 19 and the pad, and the weldment 5 is connected to the buffer plate 19. When the vertical module 4 drives the weldment 5 to descend through the mounting frame 9, the buffer plate 19 buffers the contact between the weldment 5 and the busbar and the string material through the buffer spring, so as to prevent the weldment 5 from having a hard contact with the busbar and the string material.

[0037] A hand valve 17 is installed on the bottom plate 18. The hand valve 17 connects the external cooling system with the weldment 5 in series through a pipeline. The hand valve 17 allows the cooling gas to flow between the cooling system and the weldment 5. When the weldment 5 is welding the busbar and the material, heat is generated. The cooling gas introduced by the external cooling system is used to cool the weldment 5. When one or more weldments 5 are not in use, the hand valve 17 needs to be manually closed to cut off the flow path of the cooling gas.

[0038] The working principle of the present invention is as follows: glass plates 3 of different specifications and sizes are used according to production conditions. When narrow glass plates are used, the narrow conveyor belt 6 conveys the narrow glass plates. When wide glass plates are used, the narrow conveyor belt 6 and the wide conveyor belt 7 cooperate to convey the wide glass plates.

[0039] The glass plate 3 is placed on the conveyor belt, and the string material and the convergence belt are placed on the glass plate 3 in sequence manually or by an external production line or a robot. The conveyor belt transports the glass plate 3. During the transportation process, when the limit switch 16 detects the glass plate 3, the control system drives the in-position cylinder 15 to work, and the in-position cylinder 15 extends the cylinder rod. The in-position cylinder 15 blocks the glass plate 3 through the short axis, so that the glass plate 3 stays on the narrow conveyor belt 6 or the narrow conveyor belt 6 and the wide conveyor belt 7.

[0040] After that, the control system drives the synchronous belt 8 to drive the vertical mold group 4 to move. The vertical mold group 4 moves the welding piece 5 to the top of the welding point of the busbar and the string material through the mounting frame 9. Then the vertical mold group 4 drives the mounting frame 9 to move downward, so that the welding piece 5 is pressed on the welding point of the busbar and the string material. The welding piece 5 works under the control of the control system and realizes electromagnetic induction welding of the busbar and the string material through the electromagnetic induction welding principle. After welding is completed, the vertical mold group 4 drives the welding piece 5 to reset through the mounting frame 9, and the synchronous belt 8 mobilizes the vertical mold group 4 to reset.

[0041] After welding is completed, the in-position cylinder 15 retracts the cylinder rod to move the short axis away from the front of the glass plate 3 and below the height of the glass plate 3, so that the glass plate 3 and the battery cell formed by welding can leave the semi-automatic welding machine conveniently.

[0042] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A semi-automatic stitch welding machine, comprising a housing (2), a control panel being mounted on the housing (2), characterized in that: It also includes a frame (1), a conveyor belt for conveying a glass plate (3), and a welding assembly for welding a busbar and a string of materials. The housing (2) is mounted on the frame (1), the conveyor belt and the welding assembly are both mounted on the frame (1), the welding assembly spans the conveyor belt, and the welding assembly welds the busbar and the string of materials on the glass plate (3).

2. The semi-automatic stitch welding machine according to claim 1, characterized in that: The conveyor belt comprises a narrow conveyor belt (6) and a wide conveyor belt (7); the narrow conveyor belt (6) is used alone or in combination with the wide conveyor belt (7) to convey the glass plate (3).

3. The semi-automatic stitch welding machine according to claim 2, characterized in that: Two in-position cylinders (15) are symmetrically arranged on the inner side of one end of the narrow conveyor belt (6), and the in-position cylinders (15) use short shafts installed at the ends of cylinder rods to block the glass plate (3). A limit switch (16) is arranged on the inner side of the narrow conveyor belt (6) at a position close to the in-position cylinders (15), and the limit switch (16) detects the position of the glass plate (3).

4. The semi-automatic stitch welding machine according to claim 2, characterized in that: An L-shaped support and a side support (12) with adjustable positions are arranged on the outside of the narrow conveyor belt (6); the L-shaped support and the side support (12) correspond in position and are respectively distributed on both sides of the narrow conveyor belt (6); a correction cylinder (13) is installed on the side support (12); a base is installed on the cylinder rod of the correction cylinder (13); and a detachable correction wheel (14) is installed on the upper end of the base and the L-shaped support.

5. The semi-automatic stitch welding machine according to any one of claims 2 to 4, characterized in that: The structural setting of the wide conveyor belt (7) is the same as that of the narrow conveyor belt (6), except that the overall width of the wide conveyor belt (7) is greater than the overall width of the narrow conveyor belt (6), and no "L"-shaped support is provided on the wide conveyor belt (7).

6. The semi-automatic stitch welding machine according to claim 5, characterized in that: The narrow conveyor belt (6) is mounted on a frame (1) via an L-shaped bracket, a plurality of adjustment rails (10) are mounted on the frame (1), a plurality of sliders are slidably mounted on the adjustment rails (10), and the wide conveyor belt (7) is mounted on the adjustment rails (10) via sliders.

7. The semi-automatic stitch welding machine according to claim 1, characterized in that: The welding assembly comprises a synchronous belt (8) and a slide rail (11) symmetrically mounted at both ends of a frame (1); the slide rail (11) is located on one side of the synchronous belt (8); the slide rail (11) is connected to a support frame via a slider; the support frame is connected to a section of the synchronous belt (8) via a sheet metal; a vertical mold group (4) is mounted on the support frame; two vertical mold groups (4) cooperate with each other to be mounted with a mounting frame (9) via a slide plate; a plurality of welding parts (5) are mounted on the mounting frame (9); the welding parts (5) weld the busbar and the string material using the principle of electromagnetic induction welding.

8. The semi-automatic stitch welding machine according to claim 7, characterized in that: A plurality of base plates (18) are mounted on the mounting frame (9), a pin is slidably mounted on the base plate (18) via a cushion block, a buffer spring is sleeved on the pin, one end of the pin is connected to a buffer plate (19), the buffer spring is located between the buffer plate (19) and the cushion block, and the welded part (5) is connected to the buffer plate (19).

9. The semi-automatic stitch welding machine according to claim 8, characterized in that: A hand valve (17) is installed on the bottom plate (18), and the hand valve (17) connects the external cooling system and the weldment (5) in series through a pipeline. The hand valve (17) allows cooling gas to flow between the cooling system and the weldment (5).

10. The semi-automatic stitch welding machine according to claim 1, characterized in that: Universal wheels and lifting feet are installed at the bottom of the frame (1); when the lifting feet are folded up, the universal wheels are in contact with the ground.

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