Bending mechanism and grabbing device

Abstract

The utility model relates to the technical field of solar cell string production, in particular to a bending mechanism and a grabbing device. The bending mechanism comprises a driving assembly, a first main body, and a first suction cup group, a pressing plate and a second suction cup group which are arranged in sequence, the driving assembly is used for driving the first main body to lift and translate, and the first suction cup group and the second suction cup group are used for adsorbing battery pieces; the first suction cup set and the pressing plate are fixed to the bottom of the first body, the first body is provided with a first driving piece, and the first driving piece is used for driving the second suction cup set to move upwards so as to bend the battery piece. The grabbing device can grab the battery piece and the pressing tool at the same time and comprises a second main body, a second driving part, a lifting connecting rod, an adsorption part and a bending mechanism, the second main body is fixedly connected with the first main body, the second driving part is arranged on the second main body, and the driving end of the second driving part is in driving connection with the lifting connecting rod to drive the lifting connecting rod to move up and down; the adsorption pieces are located at the two ends of the first suction cup set and arranged on the lifting connecting rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to solar cell string production technical field, concretely relates to a kind of bending mechanism and grabbing device. BACKGROUND

[0002] A kind of back contact type film-coated cell string manufacturing process is as follows: according to cell string structure, first lay adhesive film, then lay solder strip and cell piece on adhesive film, finally heat to make adhesive film and cell piece adhere and solder strip is fixed on cell piece surface. To improve the laying precision of solder strip, cell piece is bent to form curved portion and flat portion, the curved portion of cell piece is raised upward to avoid the clamp that holds the first end of solder strip, the flat portion of cell piece is then pressed to the solder strip portion below it to make the flat portion and the corresponding adhesive film portion, solder strip portion relatively fixed, the clamp releases solder strip, and the curved portion of cell piece restores flat. To bend cell piece, a bending mechanism is needed. SUMMARY

[0003] To achieve the above object, the utility model provides the following scheme:

[0004] A kind of bending mechanism, including drive assembly, first body and first suction cup group, pressing plate and second suction cup group that are sequentially arranged, the drive assembly is used to drive the first body to make lifting and translational motion, the first suction cup group and the second suction cup group are used to adsorb cell piece;The first suction cup group and the pressing plate are fixed to the bottom of the first body, first driving part is provided on the first body, and the first driving part is used to drive the second suction cup group to move upward to bend the cell piece.

[0005] Further, the bottom surface of the pressing plate is curved upward near the second suction cup group.

[0006] Further, the bottom of the pressing plate is attached with a buffer pad.

[0007] Further, the bending mechanism further includes a first driving part, a connecting rod assembly, a movable shaft and a mounting seat, the first driving part is provided on the first body, the connecting rod assembly includes a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is fixed on the first body, two ends of the second connecting rod are respectively pivoted to the other end of the first connecting rod and one end of the third connecting rod, the other end of the third connecting rod is rotatably connected with the movable shaft, the mounting seat is fixedly connected with the third connecting rod, the second suction cup group is arranged at the bottom of the mounting seat, a waist hole is provided on the first connecting rod, the movable shaft is limitingly matched with the waist hole, and the first driving part is drivingly connected with the movable shaft to make the movable shaft move in the waist hole.

[0008] Further, the connecting rod assembly is provided with two groups, and the driving end of the first driving member is drivingly connected to the part of the movable shaft between the two groups of connecting rod assemblies.

[0009] Further, the waist hole is an arc-shaped waist hole, the first driving member is a cylinder, the cylinder barrel of the cylinder is rotationally connected to the first body, and the piston rod of the cylinder is rotationally connected to the movable shaft.

[0010] The bending mechanism provided by the utility model, the first suction disc group and the second suction disc group are used for adsorbing battery pieces, the pressing plate is located between the first suction disc group and the second suction disc group, after the first suction disc group and the second suction disc group adsorb battery pieces, the first driving member drives the second suction disc group to move upward, under the support of the pressing plate, one end of the battery piece adsorbed by the second suction disc group is bent, and when the second suction disc group returns to the initial position, the battery piece returns to be flat.

[0011] The utility model also provides a kind of grabbing device, including second body, second driving member, lifting connecting rod, suction accessory and bending mechanism, the second body is fixedly connected with the first body, the second driving member is set on the second body, the driving end of the second driving member is drivingly connected with the lifting connecting rod to drive the lifting connecting rod to move up and down, and the suction accessory is located at the two ends of the first suction disc group and is set on the lifting connecting rod.

[0012] The grabbing device provided by the utility model, wherein the first suction disc group passes through the battery piece from the avoiding hole on the pressing tool, and the suction accessory grabs the pressing tool, so that the pressing tool is located above the battery piece, when the battery piece returns to be flat, the second driving member can drive the suction accessory to move downwards so that the pressing tool presses the battery piece, and the grabbing device integrates the battery piece and the pressing tool into one, and is practical. ACCURACY OF DRAWINGS

[0013] Figure 1 It is the perspective view of the first state of the bending mechanism of the utility model;

[0014] Figure 2 It is the perspective view of the second state of the bending mechanism of the utility model Figure 1 It is the enlarged view of area A in the utility model;

[0015] Figure 3 It is the perspective view of the second state of the bending mechanism of the utility model;

[0016] Figure 4 It is the side view of suction disc battery piece in the first state of the bending mechanism of the utility model;

[0017] Figure 5 It is the side view of suction disc battery piece in the second state of the bending mechanism of the utility model;

[0018] Figure 6is the perspective view of the grabbing device when the bending mechanism of the utility model is in the second state.

[0019] Wherein: 100, first main body;110, first suction cup group;120, pressing plate;130, second suction cup group;140, first driving part;150, connecting rod assembly;151, first connecting rod;1511, waist hole;152, second connecting rod;153, third connecting rod;160, movable shaft;170, mounting seat;200, battery piece;300, second main body;310, second driving part;320, lifting connecting rod;330, suction accessory. DETAILED DESCRIPTION

[0020] The technical scheme and technical effects of the utility model are further described in detail below in combination with the drawings of the utility model.

[0021] It should be noted that in the description of the utility model, the terms "upper", "lower", "left side", "right side" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated;It can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] As Figures 1-5 As shown in the utility model provides a kind of bending mechanism, for bending battery piece 200, it includes: driving assembly (not shown in drawing), first main body 100 and sequentially arranged first suction cup group 110, pressing plate 120 and second suction cup group 130, driving assembly is used to drive first main body 100 to make lifting and moving action, first suction cup group 110 and second suction cup group 130 are used to adsorb battery piece 200;First suction cup group 110 and pressing plate 120 are fixed to the bottom of first main body 100, first main body 100 is equipped with first driving part 140, and first driving part 140 is used to drive second suction cup group 130 to move upward to bend battery piece 200.

[0023] Among them, the first suction cup group 110 and the second suction cup group 130 each include multiple suction cups, and the first suction cup group 110 and the second suction cup group 130 are used to adsorb the battery cell 200. When the second suction cup group 130 is in the initial position, the adsorption surfaces of the first suction cup group 110 and the second suction cup group 130 are at the same height. After contacting the battery cell 200, the second suction cup group 130 moves upward under the drive of the first driving member 140, and the pressing plate 120 supports the middle area of ​​the battery cell 200. The portion of the battery cell 200 on the right side of the pressing plate 120 bends upward under the drive of the second suction cup group 130, while the portion of the battery cell 200 on the left side of the pressing plate 120 remains flat. Driven by the drive assembly, the bending mechanism grabs the battery cell 200 at the feeding station and then transports it to the laying station. When continuously laying a back-contact film-coated battery string, the cell 200 is first bent. The right side of the cell 200 tilts upward to avoid the clamp holding the end of the solder ribbon. The flat left side of the cell 200 presses against the solder ribbon. After the clamp releases the end of the solder ribbon, the second suction cup assembly 130 moves back to its initial position, restoring the cell to a flat position. The cell 200 is then laid on the solder ribbon. During the laying process, the cell 200 presses against the solder ribbon, keeping it in a controlled state and improving the laying accuracy of the solder ribbon.

[0024] It should be noted that the battery cell 200 can undergo elastic deformation within a certain range, and is particularly suitable for producing busbar-less battery cells for back-contact film-coated battery strings. Busbar-less battery cells are thinner and easier to bend.

[0025] In the present invention, the bottom surface of the pressure plate 120, near the second suction cup assembly 130, is curved upward. The curved surface of the pressure plate 120 increases the contact area between the pressure plate 120 and the battery cell 200, reducing the force applied to the battery cell 200 per unit area during the bending process, thereby preventing the battery cell 200 from breaking. Furthermore, a cushioning pad is attached to the bottom of the pressure plate 120. The cushioning pad is made of a flexible material, such as rubber or sponge, and can reduce the instantaneous force applied to the battery cell 200 when in contact with the pressure plate 120, further preventing the battery cell 200 from breaking.

[0026] In one embodiment of the utility model, the bending mechanism further comprises a linkage assembly 150, a movable shaft 160 and a mounting base 170, the linkage assembly 150 comprises a first linkage 151, a second linkage 152 and a third linkage 153, one end of the first linkage 151 is fixed on the first main body 100, two ends of the second linkage 152 are respectively pivotally connected with the other end of the first linkage 151 and one end of the third linkage 153, the other end of the third linkage 153 is rotationally connected with the movable shaft 160, the mounting base 170 is fixedly connected with the third linkage 153, the second suction cup group 130 is arranged at the bottom of the mounting base 170, a waist hole 1511 is arranged on the first linkage 151, the movable shaft 160 is limitingly matched with the waist hole 1511, the first driving part 140 is drivingly connected with the movable shaft 160 so that the movable shaft 160 moves in the waist hole 1511. The first main body 100 and the mounting base 170 are respectively provided with air chambers which are communicated with the first suction cup group 110 and the second suction cup group 130, so as to provide suction force for the first suction cup group 110 and the second suction cup group 130. When the first driving part 140 drives the movable shaft 160 to move in the waist hole 1511, the mounting base 170 can drive the second suction cup group 130 to move around the pressing plate 120. When the movable shaft 160 moves to the right end of the waist hole 1511, the second suction cup group 130 is in the initial position, that is, at the same height as the first suction cup group 110; when the movable shaft 160 moves to the left end of the waist hole 1511, the second suction cup group 130 is in the high position, which is higher than the initial position and closer to the pressing plate 120 in the horizontal direction.

[0027] In the embodiment, the linkage assembly 150 is provided with two groups, the driving end of the first driving part 140 is drivingly connected with the part of the movable shaft 160 between the two groups of linkage assemblies 150, so as to improve the stability of the second suction cup group 130 during movement.

[0028] Preferably, the waist hole 1511 is an arc-shaped waist hole, and the first driving part 140 is a pneumatic cylinder, the cylinder barrel of the pneumatic cylinder is rotationally connected with the first main body 100, and the piston rod of the pneumatic cylinder is rotationally connected with the movable shaft 160. The waist hole 1511 is designed as an arc shape, so as to optimize the moving path of the suction end of the second suction cup group 130, make the suction end of the second suction cup group 130 rotate around the pressing plate 120, ensure that the suction end of the second suction cup group 130 is perpendicular or substantially perpendicular to the battery piece 200 during the bending process of the battery piece 200, and avoid separation of the second suction cup group 130 from the battery piece 200 or damage to the surface of the battery piece 200 during movement.

[0029] In another embodiment of the utility model, the bending mechanism further comprises a mounting seat 170, the second suction cup group 130 is arranged at the bottom of the mounting seat 170, the two ends of the mounting seat 170 are fixed with connecting rods, the connecting rods are rotationally connected with the pressing plate 120, so that the mounting seat 170 can rotate around the pressing plate 120, wherein the included angle between the connecting rod and the second suction cup group is an acute angle. The first driving member 140 can be a cylinder, the cylinder barrel of the cylinder is rotationally connected with the first main body 100, and the piston rod of the cylinder is rotationally connected with the mounting seat 170, so that the first driving member 140 can directly drive the mounting seat 170 to rotate, when the piston rod of the cylinder extends to the limit position, the suction surfaces of the first suction cup group 110 and the second suction cup group 130 are at the same height.

[0030] As shown in Figure 6 The utility model also provides a kind of grabbing device for laying battery piece 200 and pressing tool, it includes: second main body 300, second driving member 310, lifting connecting rod 320, suction accessory 330 and bending mechanism, second main body 300 is fixedly connected with first main body 100, second driving member 310 is arranged on second main body 300, the driving end of second driving member 310 is drivingly connected with lifting connecting rod 320 to drive lifting connecting rod 320 to move up and down, and suction accessory 330 is located at the two ends of first suction cup group 110 and is arranged on lifting connecting rod 320. Wherein, bending mechanism grabs battery piece 200, and suction accessory 330 grabs pressing tool, and suction accessory 330 is adsorbed to the two ends of pressing tool, and pressing tool is used to fix battery piece 200. Pressing tool is provided with avoiding hole, for first suction cup group 110 to pass through. When working, second driving member 310 drives lifting connecting rod 320 to move down, so that suction accessory 330 is adsorbed to pressing tool in the position lower than bending mechanism, second driving member 310 drives lifting connecting rod 320 to move up, so that pressing tool is higher than the adsorbed end of first suction cup group 110, first suction cup group 110 and second suction cup group 130 are adsorbed to battery piece 200 again and bend it, while suction accessory 330 moves down to make pressing tool press battery piece 200 left side flat part, and second suction cup group 130 restores to initial position.

[0031] In the utility model, suction accessory 330 is electromagnet, and corresponding pressing tool is made of magnetic metal material. In other embodiments of the utility model, suction accessory 330 is suction cup.

[0032] The above-mentioned is only the preferred embodiment of the utility model, and of course cannot limit the right scope of the utility model, and the person skilled in the art can understand that the whole or part of the above-mentioned embodiment is realized, and equivalent change is made according to the utility model claim, which still belongs to the range covered by the utility model.

Claims

1. A bending mechanism, characterized by: The bending mechanism comprises a driving assembly, a first body (100), a first suction disc group (110), a pressing plate (120) and a second suction disc group (130) arranged in sequence, the driving assembly is used for driving the first body (100) to perform lifting and horizontal movement, and the first suction disc group (110) and the second suction disc group (130) are used for adsorbing a battery piece (200); the first suction disc group (110) and the pressing plate (120) are fixed to the bottom of the first body (100), and a first driving member (140) is arranged on the first body (100) and used for driving the second suction disc group (130) to move upward so as to bend the battery piece (200).

2. The bending mechanism according to claim 1, characterized in that: The bottom surface of the pressing plate (120) is curved upward near the second suction disc group (130).

3. The bending mechanism of claim 1, wherein: A buffer pad is attached to the bottom of the pressing plate (120).

4. The bending mechanism of claim 2, wherein: The bending mechanism further comprises a connecting rod assembly (150), a movable shaft (160) and a mounting seat (170), the connecting rod assembly (150) comprises a first connecting rod (151), a second connecting rod (152) and a third connecting rod (153), one end of the first connecting rod (151) is fixed to the first body (100), two ends of the second connecting rod (152) are respectively pivotally connected to the other end of the first connecting rod (151) and one end of the third connecting rod (153), the other end of the third connecting rod (153) is rotationally connected to the movable shaft (160), the mounting seat (170) is fixedly connected to the third connecting rod (153), the second suction disc group (130) is arranged at the bottom of the mounting seat (170), a waist hole (1511) is arranged on the first connecting rod (151), the movable shaft (160) is limitingly matched with the waist hole (1511), and the first driving member (140) is drivingly connected to the movable shaft (160) so that the movable shaft (160) moves in the waist hole (1511).

5. The bending mechanism of claim 4, wherein: The connecting rod assembly (150) is provided in two groups, and the driving end of the first driving member (140) is drivingly connected to the part of the movable shaft (160) between the two groups of connecting rod assemblies (150).

6. The bending mechanism of claim 4, wherein: The waist hole (1511) is an arc-shaped waist hole, the first driving member (140) is a pneumatic cylinder, the cylinder barrel of the pneumatic cylinder is rotationally connected to the first body (100), and the piston rod of the pneumatic cylinder is rotationally connected to the movable shaft (160).

7. A gripping device, characterized in that: The bending mechanism comprises a second body (300), a second driving member (310), a lifting connecting rod (320), a suction accessory (330) and the bending mechanism according to any one of claims 1-6, the second body (300) is fixedly connected to the first body (100), the second driving member (310) is arranged on the second body (300), the driving end of the second driving member (310) is drivingly connected to the lifting connecting rod (320) so as to drive the lifting connecting rod (320) to move up and down, and the suction accessory (330) is located at both ends of the first suction disc group (110) and arranged on the lifting connecting rod (320).

8. The gripping device according to claim 7, characterized in that: The adsorption member (330) is an electromagnet.

9. The gripping device of claim 7, wherein: The adsorption member (330) is a suction cup.

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