Transfer device

Abstract

The utility model relates to the technical field of photovoltaic cell string production, in particular to a transfer device which comprises a cross beam, a driving mechanism and a mechanical gripper, the driving mechanism and the mechanical gripper are arranged on the cross beam, and the driving mechanism is in driving connection with the mechanical gripper to drive the mechanical gripper to move horizontally and vertically. The mechanical gripper comprises a flat plate, a film adsorption part, pressing tool adsorption parts and a fan, the film adsorption part, the pressing tool adsorption parts and the fan are arranged at the bottom of the flat plate, the orthographic projection of the fan is located in the orthographic projection of the film adsorption part, the two pressing tool adsorption parts are arranged at the two ends of the film adsorption part respectively, air outlets of the fan face upwards, and ventilation holes opposite to the air outlets are formed in the flat plate. When the mechanical gripper grabs the membrane and the pressing tool moves upwards, the fan blows air upwards, air within a certain range above the membrane can be extracted, airflow acting on the upper surface of the membrane through the light hole of the pressing tool is weakened or eliminated, and then it is guaranteed that the membrane cannot fall off from the mechanical gripper in the transferring process.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cell string production, in particular to a transfer device. Background Art

[0002] When producing film-coated battery strings, battery string production equipment uses a transfer device to simultaneously lay down a film sheet and a press on top of the battery cells and solder ribbons to improve production efficiency. The transfer device uses a suction cup to grab the film sheet. Before the transfer device grabs the film sheet and press, the press is stacked on the film sheet. After the transfer device grabs the stacked press and film sheet, it must first lift the press and film sheet and transfer them. Because the press sheet itself has a light-transmitting hole, the film sheet moves upward relative to the air during the lifting process. The airflow will act on the upper surface of the film sheet through the light-transmitting hole, and there is a risk that the film sheet will fall off the suction cup. Utility Model Content

[0003] In order to solve the above technical problems, the present invention provides the following solutions:

[0004] A transfer device includes a crossbeam and a driving mechanism and a mechanical gripper arranged on the crossbeam. The driving mechanism is connected to the mechanical gripper to drive its horizontal and vertical movements. The mechanical gripper includes a flat plate and a membrane adsorbent, a pressure adsorbent and a fan arranged at the bottom of the flat plate. The orthographic projection of the fan is located within the orthographic projection of the membrane adsorbent. Two pressure adsorbents are provided and are respectively arranged at both ends of the membrane adsorbent. The air outlet of the fan is upward, and the flat plate is provided with ventilation holes opposite to the air outlet.

[0005] Furthermore, the membrane adsorption parts include a first mounting seat and a second mounting seat connected to the flat plate, and a first suction cup and a second suction cup respectively arranged at the bottom of the first mounting seat and the second mounting seat, the first suction cup and the second suction cup correspond to the two long sides of the adsorption membrane, and the fan is located between the first mounting seat and the second mounting seat.

[0006] Furthermore, the first mounting seat, the second mounting seat and the presser adsorption component are all connected to the flat plate via springs.

[0007] Furthermore, a lifting drive component is provided on the flat plate, and the lifting drive component is drivingly connected to the first mounting seat to drive the first suction cup to move up and down.

[0008] Furthermore, a cell adsorbent is provided at the bottom of the flat plate, the cell adsorbent is located on one side of the membrane adsorbent, and the cell adsorbent includes a third mounting base connected to the flat plate and a third suction cup provided at the bottom of the third mounting base.

[0009] Furthermore, the flat plate includes a first flat plate and a second flat plate, the press adsorption component and the fan are arranged on the first flat plate, the battery cell adsorption component is arranged on the second flat plate, the first flat plate and the second flat plate are slidingly connected, and a horizontal driving component is provided on one of the first flat plate and the second flat plate, and the horizontal driving component is drivingly connected to the other of the first flat plate and the second flat plate to drive its horizontal movement, so that the first flat plate and the second flat plate are relatively close to or away from each other.

[0010] Furthermore, a proximity switch is provided on one side of each of the press adsorption components.

[0011] Furthermore, the driving mechanism and the mechanical gripper are matched with two sets.

[0012] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0013] The transfer device has a mechanical gripper, which includes a membrane adsorption part, a press adsorption part and a fan, wherein the membrane adsorption part is used to grab the membrane, and the press adsorption part is used to grab the press from both ends of the membrane. After the mechanical gripper grabs the membrane and the press, the membrane is located below the press and the fan is located above the press. When the mechanical gripper moves up, the fan blows upward, which can extract air within a certain range above the membrane, weaken or eliminate the airflow acting on the upper surface of the membrane through the light-transmitting hole of the press, thereby ensuring that the membrane will not fall off the mechanical gripper during the transfer process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the transfer device of the utility model from one angle;

[0015] Figure 2 This is a perspective view of the first embodiment of the mechanical gripper of the present utility model;

[0016] Figure 3 This is a top view of the first embodiment of the mechanical gripper of the present utility model;

[0017] Figure 4 This is a bottom view of the first embodiment of the mechanical gripper of the present utility model;

[0018] Figure 5 This is a perspective view of a second embodiment of the mechanical gripper of the present invention;

[0019] Figure 6 It is a top view of the second embodiment of the mechanical gripper in the present utility model.

[0020] Among them: 100, beam; 200, drive mechanism; 300, mechanical gripper; 310, flat plate; 311, first flat plate; 312, second flat plate; 313, ventilation hole; 314, lifting drive member; 315, horizontal drive member; 316, adapter plate; 320, membrane adsorption member; 321, first mounting seat; 322, second mounting seat; 323, first suction cup; 324, second suction cup; 330, press adsorption member; 331, proximity switch; 340, fan; 350, battery cell adsorption member; 351, third mounting seat; 352, third suction cup. DETAILED DESCRIPTION

[0021] The technical solution and technical effects of the present invention are further described in detail below in conjunction with the accompanying drawings of the present invention.

[0022] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0023] In the description of this embodiment, the terms "upper", "lower", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings and are only for the convenience of description and simplification of operation, and are not intended to indicate

[0024] It should also be noted that in this document, relational terms such as "first" and "second" are used only to distinguish a first feature from a second feature, and do not necessarily require or imply any actual relationship or order between these features.

[0025] The utility model provides a transfer device for simultaneously picking up and laying the membrane sheets and presses required for the film-coated battery string, and the membrane sheets will not fall off during the process of lifting the membrane sheets and presses. Figures 1-4As shown, in one embodiment of the present invention, the transfer device includes a crossbeam 100, a drive mechanism 200 and a mechanical gripper 300 disposed on the crossbeam 100. The drive mechanism 200 is connected to the mechanical gripper 300 to drive its horizontal and vertical movement. The mechanical gripper 300 includes a flat plate 310 and a membrane adsorbent 320, a press adsorbent 330, and a fan 340 disposed at the bottom of the flat plate 310. The orthographic projection of the fan 340 is located within the orthographic projection of the membrane adsorbent 320. Two press adsorbents 330 are provided and are respectively disposed at both ends of the membrane adsorbent 320. The air outlet of the fan 340 is upward, and the flat plate 310 is provided with ventilation holes 313 opposite to the air outlet. The drive mechanism 200 can be a pneumatic or electric transmission mechanism, preferably two electric cylinders, one of which is mounted on the crossbeam 100 and drives the other electric cylinder to move horizontally, and the other electric cylinder is slidably connected to the crossbeam 100 and is used to drive the mechanical gripper 300 to move up and down. The film adsorption member 320 is used to adsorb and grasp the film, and the press adsorption member 330 is used to adsorb and grasp the press.

[0026] It should be noted that the press has a light-transmitting hole and an avoidance hole. When producing a film-coated battery string, the role of the light-transmitting hole is that infrared light can pass through the light-transmitting hole to heat the diaphragm of the press to make it sticky, so as to adhere to the surface of the battery cell to fix the welding strip. The diaphragm is a hot-melt adhesive film; the role of the avoidance hole is that the adsorption end of the membrane adsorption part 320 can pass through the avoidance hole to the diaphragm under the adsorption press, so that the mechanical gripper 300 can simultaneously grab the stacked press and diaphragm.

[0027] After the mechanical gripper 300 grabs the diaphragm and the press, the diaphragm is located below the press, and the fan is located above the press. The mechanical gripper 300 grabs the diaphragm and the press and is in a stationary state. The fan 340 runs to blow air in the direction of the ventilation hole 313. The air between the fan 340 and the diaphragm is extracted. Since the light-transmitting hole of the press conducts the gas above and below it, the atmospheric pressure above the diaphragm becomes smaller, and the diaphragm tends to float upward. Under the action of the driving mechanism 200, the mechanical gripper 300 can lift the diaphragm and the press. During this process, the diaphragm moves upward relative to the air, and the airflow acts downward through the light-transmitting hole of the press on the upper surface of the diaphragm. After the fan 340 is running, it can weaken or eliminate the airflow acting on the upper surface of the diaphragm, thereby ensuring that the diaphragm will not fall off from the mechanical gripper 300 during the transportation process.

[0028] In order to improve the efficiency of the transfer device in transferring diaphragms and presses, two groups of drive mechanisms 200 and mechanical grippers 300 are provided. The two mechanical grippers 300 grab the diaphragms and presses at the same grabbing position and lay the battery cells at the same laying position. The two mechanical grippers 300 intersect at different heights to avoid each other, so that the two mechanical grippers 300 can transfer the diaphragms and presses in a circular and alternating manner.

[0029] In this embodiment, the membrane adsorbent 320 includes a first mounting base 321 and a second mounting base 322 connected to the flat panel 310, as well as a first suction cup 323 and a second suction cup 324 disposed at the bottom of each mounting base 321 and 322. The first suction cup 323 and the second suction cup 324 adhere to the two long sides of the membrane, and the fan 340 is located between the first mounting base 321 and the second mounting base 322. The first suction cup 323 and the second suction cup 324 adhere to the membrane through a clearance hole in the press. The membrane is rectangular, and the number of fans 340 is determined by need; preferably, two fans 340 are provided.

[0030] In this embodiment, the first mounting seat 321, the second mounting seat 322, and the presser adsorbent 330 are all connected to the flat plate 310 via springs to prevent damage to the mechanical gripper 300 when in contact with the diaphragm and the presser. Specifically, a guide post is fixed to each of the first mounting seat 321 and the second mounting seat 322. The guide post is connected to the flat plate 310 for vertical sliding movement. The top of the guide post is engaged with the upper surface of the flat plate 310. A spring is mounted on the guide post, with one end of the spring contacting the flat plate 310 and the other end contacting the first mounting seat 321 or the second mounting seat 322. The presser adsorbent 330 can be a suction cup or an electromagnet.

[0031] Furthermore, a lifting drive 314 is provided on the flat plate 310, which is drivably connected to the first mounting base 321 to drive the lifting movement of the first suction cup 323. The membrane suction member 320 and the presser suction member 330 are configured so that after the membrane and presser are lifted, the membrane and presser are not in contact. That is, when the mechanical gripper grasps the membrane and presser, the first suction cup 323 and the second suction cup 324 first contact the membrane, the spring is compressed, and the presser suction member 330 then contacts the presser. When laying the membrane and press onto the cell, the lift driver 314 drives the first mounting base 321 upward, lifting one side of the membrane to clear the clamp holding the end of the solder ribbon, thereby improving the accuracy of the solder ribbon placement. The other side of the membrane then contacts the cell and the solder ribbon. After the clamp releases the end of the solder ribbon, the lift driver 314 moves downward to restore the membrane to a flat surface. The press suction member 330 then moves downward, releasing the press after the press contacts the membrane. The lift driver 314 can be a pneumatic cylinder or an electric push rod.

[0032] In this embodiment, a proximity switch 331 is provided on one side of each pressing tool adsorbing member 330 for detecting whether there is a pressing tool at the grabbing station.

[0033] like Figure 5 and Figure 6As shown, in another embodiment of the present invention, a cell adsorbent 350 is further provided at the bottom of the flat plate 310. The cell adsorbent 350 is located on one side of the membrane adsorbent 320. The cell adsorbent 350 includes a third mounting seat 351 connected to the flat plate 310, and a third suction cup 352 arranged at the bottom of the third mounting seat 351. The third suction cup 352 uses an accordion-type suction cup and has a buffering function. The cell adsorbent 350 is used to adsorb the cell, so that the transfer device can simultaneously adsorb the membrane, cell and press, thereby improving the production efficiency of the battery string. It should be noted that when the lifting drive 314 is provided on the flat plate 310, the cell adsorbent 350 and the first mounting seat 321 are respectively provided on both sides of the second mounting seat 322.

[0034] In this embodiment, the flat plate 310 includes a first flat plate 311 and a second flat plate 312. A presser adsorbent 330 and a fan 340 are disposed on the first flat plate 311, and a cell adsorbent 350 is disposed on the second flat plate 312. The first and second flat plates 311 and 312 are slidably connected. A horizontal drive 315 is disposed on one of the first and second flat plates 311 and 312. The horizontal drive 315 is drivably connected to the other of the first and second flat plates 311 and 312 to drive its horizontal movement, thereby causing the first and second flat plates 311 and 312 to move relatively closer or further apart, thereby causing the membrane adsorbent 320 and cell adsorbent 350 to move relatively closer or further apart. In battery string production equipment, the spacing between the membrane and cell gripping stations is generally greater than the spacing between two adjacent cell cells in the battery string to facilitate the layout of the various components of the equipment. By adjusting the spacing between the membrane adsorbent 320 and cell adsorbent 350, the distance between the membrane and cell can be reduced during transport by the transfer device, meeting the laying requirements of the film-coated battery string. Preferably, the horizontal driving member 315 is provided on the second flat plate 312 , and the horizontal driving member 315 can be selected from a cylinder, a synchronous belt transmission mechanism or a rack and pinion transmission mechanism.

[0035] The above disclosure is only a preferred embodiment of the present invention, and it is certainly not intended to limit the scope of the rights of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A transfer device, characterized in that: The invention comprises a crossbeam (100), a driving mechanism (200) and a mechanical gripper (300) arranged on the crossbeam (100), wherein the driving mechanism (200) is connected to the mechanical gripper (300) to drive the horizontal and vertical movements thereof, and the mechanical gripper (300) comprises a flat plate (310), a membrane adsorption member (320), a pressing member adsorption member (330) and a fan (340) arranged at the bottom of the flat plate (310), wherein the orthographic projection of the fan (340) is located within the orthographic projection of the membrane adsorption member (320), two pressing member adsorption members (330) are provided and are respectively arranged at two ends of the membrane adsorption member (320), the air outlet of the fan (340) is upward, and the flat plate (310) is provided with a ventilation hole (313) opposite to the air outlet.

2. The transfer device according to claim 1, characterized in that: The membrane adsorption member (320) includes a first mounting seat (321) and a second mounting seat (322) connected to the flat plate (310), and a first suction cup (323) and a second suction cup (324) respectively arranged at the bottom of the first mounting seat (321) and the second mounting seat (322), wherein the first suction cup (323) and the second suction cup (324) correspond to the two long sides of the adsorption membrane, and the fan (340) is located between the first mounting seat (321) and the second mounting seat (322).

3. The transfer device according to claim 2, characterized in that: The first mounting seat (321), the second mounting seat (322) and the pressing tool adsorption member (330) are all connected to the flat plate (310) via springs.

4. The transfer device according to claim 3, characterized in that: A lifting drive member (314) is provided on the flat plate (310), and the lifting drive member (314) is drivingly connected to the first mounting seat (321) to drive the first suction cup (323) to move upward and downward.

5. The transfer device according to claim 1, characterized in that: A cell adsorption member (350) is further provided at the bottom of the flat plate (310), and the cell adsorption member (350) is located on one side of the membrane adsorption member (320). The cell adsorption member (350) includes a third mounting seat (351) connected to the flat plate (310), and a third suction cup (352) provided at the bottom of the third mounting seat (351).

6. The transfer device according to claim 5, characterized in that: The flat plate (310) includes a first flat plate (311) and a second flat plate (312); the presser adsorption member (330) and the fan (340) are arranged on the first flat plate (311); the battery cell adsorption member (350) is arranged on the second flat plate (312); the first flat plate (311) and the second flat plate (312) are slidably connected; a horizontal driving member (315) is provided on one of the first flat plate (311) and the second flat plate (312); the horizontal driving member (315) is drivingly connected to the other of the first flat plate (311) and the second flat plate (312) to drive the horizontal movement thereof, so that the first flat plate (311) and the second flat plate (312) are relatively close to or away from each other.

7. The transfer device according to claim 1, characterized in that: A proximity switch (331) is provided on one side of each of the pressing tool adsorption components (330).

8. The transfer device according to any one of claims 1 to 7, characterized in that: The driving mechanism (200) and the mechanical gripper (300) are matched with each other in two sets.

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