Disclosure of Invention
The invention aims to provide a carrying mechanism which can carry out on-line weighing on solar cells without manual operation and is suitable for a solar cell on-line weighing system.
In order to achieve the purpose, the invention adopts the technical scheme that: the carrying mechanism is suitable for an online solar cell weighing system and comprises a weighing machine, the weighing machine comprises a rack and a weighing module arranged on the rack, the carrying mechanism comprises a supporting device used for supporting a solar cell and a bracket used for placing the supported solar cell, the bracket can move up and down relative to the rack and can move back and forth or left and right relative to the rack in the horizontal plane,
the carrying mechanism also comprises a first driving device for driving the bracket to move up and down relative to the rack and a second driving device for driving the bracket to move back and forth or left and right relative to the rack, the first driving device comprises a first fixed part and a first movable part which is arranged on the first fixed part in a vertically sliding manner, the second driving device comprises a second fixed part and a second movable part which is arranged on the second fixed part in a manner of sliding back and forth or left and right, the first fixed part is fixedly arranged on the machine frame, the second fixed part is fixedly arranged on the first movable part, the bracket is fixedly arranged on the second movable part, or the second fixed part is fixedly arranged on the rack, the first fixed part is fixedly arranged on the second movable part, and the bracket is fixedly arranged on the first movable part.
Preferably, the on-line weighing system comprises a conveying belt for carrying and conveying the solar cell, and the carrying mechanism is used for carrying the solar cell onto the weighing module from the conveying belt or carrying the solar cell onto the conveying belt from the weighing module.
Further, the supporting device is arranged below the conveying belt.
Further, the moving direction of the bracket in the horizontal plane is perpendicular to the conveying direction of the conveying belt.
Preferably, the on-line weighing system further comprises a controller, and the first driving device and the second driving device are respectively electrically connected with the controller.
Further, the lifting device comprises a top plate air cylinder fixedly arranged below the transmission belt, and the top plate air cylinder is electrically connected with the controller.
Further, the weighing machine further comprises a detection element for monitoring the solar cell, and the detection element is electrically connected with the controller.
Preferably, the first driving device is a lifting cylinder, the first fixing member is a first cylinder body, and the first movable member is a pull rod which can be slidably disposed in the first cylinder body up and down.
Preferably, the second driving device is a carrying electric cylinder, the second fixed member is a second cylinder, and the second movable member is a slider capable of sliding back and forth or left and right relative to the second cylinder.
Preferably, the bracket comprises a fixed seat and a supporting plate for placing the solar cell, the fixed seat is fixedly connected with the first moving part or the second moving part, one end of the supporting plate is fixedly connected to the fixed seat, the number of the supporting plates is two, and a space for the weighing module to pass through is arranged between the two supporting plates.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the carrying mechanism suitable for the solar cell piece online weighing system can automatically carry the solar cell piece from the conveying belt to the weighing module or carry the solar cell piece from the weighing module to the conveying belt, so that the solar cell piece is weighed online without manual operation. The weighing machines are respectively arranged in the front and the back of the screen printer, the dry weight is weighed before printing, the wet weight is weighed after printing, the weight of the printing paste can be calculated through the controller, and then the printing quality and the printing stability can be evaluated through the weight of the printing paste.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
Referring to fig. 1 to 3, the full-automatic on-line weighing system for solar cells includes weighing machines and a controller respectively disposed on one side of a transmission belt 100 before and after printing, and output ends of the two weighing machines are respectively electrically connected to the controller.
Each weighing machine comprises a frame 1, a weighing module 2 arranged on the frame 1, and a carrying mechanism for carrying the solar cell sheet 200 from the conveying belt 100 to the weighing module 2 or carrying the solar cell sheet 200 from the weighing module 2 to the conveying belt 100.
The carrying mechanism comprises a supporting device 3 and a bracket 4, the supporting device 3 is used for supporting the solar cell pieces 200 on the conveying belt 100 before and after printing respectively, the bracket 4 is used for placing the supported solar cell pieces 200, the supporting device 3 is arranged below the conveying belt 100 before and after printing respectively, the bracket 4 can move up and down relative to the rack 1, and the bracket 4 can move back and forth or left and right relative to the rack 1 in the horizontal plane, so that the solar cell pieces 200 are carried to the weighing module 2 through the bracket 4 after being supported by the supporting device 3.
Specifically, the bracket 4 comprises a fixed seat 41 and two support plates 42 for placing the jacked solar cell 200, a certain interval is arranged between the two support plates 42, and the weighing module 2 can penetrate through the interval.
In this embodiment, the lifting device 3 is a top sheet cylinder disposed below the transfer belt 100 before and after printing, and the top sheet cylinder is electrically connected to and controlled by a controller. The top plate cylinder comprises a third cylinder body and a push rod capable of moving up and down in the third cylinder body, when the push rod moves upwards, the solar cell sheet 200 is jacked to be higher than the transmission belt 100, a gap is formed between the upper surface of the transmission belt 100 and the lower surface of the solar cell sheet 200, the support plate 42 is partially positioned in the gap after the bracket 4 moves back and forth or left and right, then the push rod of the top plate cylinder moves downwards, the solar cell sheet 200 falls on the bracket 4, the bracket 4 is moved, and the solar cell sheet 200 can be removed from the upper part of the transmission belt 100.
The carrying mechanism further comprises a first driving device 5 for driving the bracket 4 to move up and down and a second driving device 6 for driving the bracket 4 to move back and forth or left and right in the horizontal plane, the first driving device 5 and the second driving device 6 are respectively electrically connected with the controller, and the controller is used for controlling the actions of the first driving device 5 and the second driving device 6. Specifically, the first driving device comprises a first fixed part and a first movable part which is arranged on the first fixed part in a vertically sliding manner. The second driving device comprises a second fixed piece and a second movable piece which is arranged on the second fixed piece in a manner of sliding back and forth or left and right. The first fixed part is fixedly arranged on the frame 1, the second fixed part is fixedly arranged on the first movable part, and the fixed seat 41 of the bracket 4 is fixedly arranged on the second movable part; or, the second fixed element is fixedly arranged on the frame 1, the first fixed element is fixedly arranged on the second movable element, the fixed seat 41 of the bracket 4 is fixedly arranged on the first movable element, when the first movable element slides up and down relative to the first fixed element, the bracket 4 is driven to move up and down relative to the frame 1, and when the second movable element slides back and forth or left and right relative to the second fixed element, the bracket 4 is driven to move back and forth or left and right relative to the frame 1.
In a specific embodiment, the first driving device 5 is a lifting cylinder, the first fixed member is a first cylinder body of the lifting cylinder, and the first movable member is a pull rod slidably disposed in the first cylinder body up and down; the second driving device 6 is an electric transporting cylinder, the second fixed part is a second cylinder body of the electric transporting cylinder, and the second movable part is a slide block capable of sliding back and forth or left and right relative to the second cylinder body. In this embodiment, the second cylinder of the electric transporting cylinder is fixedly disposed on the frame 1, the first cylinder of the lifting cylinder is fixedly disposed on the slider of the electric transporting cylinder, and the fixing seat 41 of the bracket 4 is fixedly disposed on the pull rod of the lifting cylinder.
In this embodiment, the transfer belts 100 before and after printing are arranged in parallel, and the movement direction of the carriage 4 relative to the frame 1 in the horizontal plane is perpendicular to the transfer direction of the transfer belts 100, so that the length of the entire system can be reduced, and the structure of the entire system is more compact. Specifically, in the present embodiment, the transfer belt 100 is conveyed in the front-rear direction, and the carriage 4 slides left and right with respect to the frame 1.
The weighing machine further comprises a detection element 7 for monitoring the specific position of the solar cell sheet 200 on the transmission belt 100, and the detection element 7 is electrically connected with the controller. In the present embodiment, the detection element 7 is provided on the electric conveyance cylinder.
The full-automatic online weighing system for the solar cell comprises the following working procedures:
before printing, the solar cell sheet 200 is conveyed on the conveying belt 100 in the front-back direction, when the solar cell sheet 200 is conveyed into the working range of a weighing machine before printing, the specific position of the solar cell sheet 200 on the conveying belt 100 is detected by the detection element 7, the detection element 7 sends a signal to the controller, the conveying of the conveying belt 100 is controlled by the controller, and the solar cell sheet 200 is stopped at a required position, namely the solar cell sheet 200 is stopped above the top plate cylinder; then the controller controls the action of the top plate cylinder to enable the push rod of the top plate cylinder to move upwards, so that the solar cell piece 200 is jacked up and is higher than the transmission belt 100, and a gap is formed between the lower surface of the solar cell piece 200 and the upper surface of the transmission belt 100; at the moment, the controller controls the movement of the carrying electric cylinder to enable the sliding block to slide left and right relative to the second cylinder body, and the sliding block drives the lifting air cylinder and the bracket 4 to synchronously slide along the left and right directions relative to the rack 1 until the bracket 4 is conveyed to enable the supporting plate 42 of the bracket 4 to be positioned in the gap between the lower surface of the solar cell 200 and the upper surface of the conveying belt 100; the controller controls the top plate cylinder to act again, so that the push rod of the top plate cylinder moves downwards, and the solar cell piece 200 falls on the supporting plate 42 of the bracket 4; then the controller controls the lifting cylinder to act, so that the pull rod rises, and the pull rod drives the bracket 4 and the solar cell piece 200 to synchronously rise for a certain height; the controller controls the carrying electric cylinder to act again, so that the sliding block slides in the reverse direction relative to the second cylinder body when just sliding and gradually approaches the weighing module 2 until the bracket 4 and the solar cell 200 are conveyed above the weighing module 2, and at the moment, the supporting plates 42 are respectively positioned at two sides of the weighing module 2; then the controller controls the lifting cylinder to act again to enable the pull rod to descend to drive the bracket 4 to descend together, so that the solar cell sheet 200 is separated from the bracket 4, and the solar cell sheet 200 falls on the weighing module 2; then, the weight of the solar cell sheet 200 before printing, namely the dry weight, is obtained by the weighing module 2, and the dry weight value is sent to the controller;
the carrying mechanism is operated reversely according to the steps, the solar cell piece 200 is carried back to the transmission belt 100 before printing from the weighing module 2, then the transmission belt 100 transmits the solar cell piece 200 to the printing station, and after printing is finished, the solar cell piece 200 is transmitted out from the printed transmission belt 100 through the printing station;
when the solar cell sheet 200 is conveyed to the working range of the weighing machine after printing, the weighing machine works, the working process of the weighing machine is the same as that of the weighing machine before printing, and details are not repeated herein, and in the process, the weight of the solar cell sheet 200 after printing, namely the wet weight, can be obtained by the weighing module 2, and the wet weight value is sent to the controller;
finally, the weight of the printed paste (silver paste or aluminum paste) is calculated by the controller and displayed on a display on the printing machine in real time, wherein the weight is wet weight-dry weight, and the quality and stability of the printing can be further evaluated through the weight of the printed paste.
The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.