Pole piece conveying device and lamination system

Abstract

The utility model relates to the technical field of battery production equipment, and discloses a pole piece conveying device and a lamination system. The pole piece conveying device comprises a feeding conveying mechanism suitable for conveying pole pieces; the upside-down hanging conveying mechanism is arranged above the feeding conveying mechanism, the upside-down hanging conveying mechanism is provided with a feeding area and a discharging area, and the feeding area is located over part of the area of the feeding conveying mechanism so as to adsorb the pole pieces from the feeding conveying mechanism; and the discharging mechanism is arranged below the upside-down hanging conveying mechanism and comprises an adsorption unit, and the adsorption unit is suitable for ascending and descending in the height direction and rotating in the horizontal plane and is suitable for adsorbing the pole pieces in the discharging area. The adsorption unit can ascend to the upside-down hanging conveying mechanism to adsorb the pole pieces in the discharging area and drive the pole pieces to be separated from the upside-down hanging conveying mechanism, and meanwhile the adsorption unit can drive the pole pieces to rotate, so that the skew pole pieces are adjusted, and deviation correction of the pole pieces is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery production equipment technical field, concretely relates to pole piece conveying device and lamination system. BACKGROUND

[0002] The pole piece conveying device is used for conveying pole pieces in the lamination process, and mainly comprises a feeding conveying mechanism and a pre-positioning mechanism. For the structure of the pre-positioning mechanism in the form of hanging upside down, the feeding conveying mechanism transports the pole pieces to the lower side of the hanging conveying belt of the pre-positioning mechanism, the pre-positioning mechanism absorbs the pole pieces from the feeding conveying mechanism and transfers them to the next station for lamination by vacuum adsorption. However, the feeding conveying mechanism limits the pole pieces by vacuum adsorption during the conveying process, and there is a certain space interval between the feeding conveying mechanism and the hanging conveying belt, and the pole pieces are transferred between the two by vacuum. The following problems exist in the process of transferring the pole pieces: in the long-term use process of the belt, foreign matters such as pole pieces or moving mechanism wear block the hole position, causing vacuum abnormality, so that the pole pieces are skewed or cannot be caught; the hanging conveying belt mechanism is deviated, causing the pole pieces to be skewed; the feeding conveying mechanism does not completely break the vacuum (i.e. cancels the vacuum adsorption) of the pole pieces, so that when the pre-positioning mechanism absorbs the pole pieces and moves, the pole pieces are deviated by the suction force.

[0003] Therefore, when the pole pieces are transferred between the feeding conveying mechanism and the pre-positioning mechanism, the pole pieces are deviated, and if the pole pieces cannot be effectively corrected, the positioning is inaccurate and the pre-positioning waste is excessive, which affects the lamination effect and the lamination efficiency. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a pole piece conveying device and a lamination system to solve the problem that the pole piece conveying device cannot correct the pole pieces.

[0005] In the first aspect, the utility model provides a pole piece conveying device, which comprises a feeding conveying mechanism suitable for conveying pole pieces, a hanging conveying mechanism arranged above the feeding conveying mechanism, the hanging conveying mechanism having a feeding area and a discharging area, the feeding area being located directly above part of the area of the feeding conveying mechanism to adsorb the pole pieces from the feeding conveying mechanism, and a discharging mechanism arranged below the hanging conveying mechanism, the discharging mechanism comprising an adsorption unit, the adsorption unit being suitable for lifting along the height direction and rotating in the horizontal plane, and the adsorption unit being suitable for adsorbing the pole pieces in the discharging area.

[0006] Beneficial effects: By setting the feeding area of the inverted conveying mechanism to be located directly above the partial area of the feeding conveying mechanism, the inverted conveying mechanism can easily adsorb the pole piece conveyed from the feeding conveying mechanism, realize the pole piece transfer, and by setting the discharging mechanism below the inverted conveying mechanism and the discharging mechanism having a liftable adsorption unit, the adsorption unit can be lifted to the inverted conveying mechanism to adsorb the pole piece in the discharging area and drive the pole piece to separate from the inverted conveying mechanism, and by setting the adsorption unit to rotate in the horizontal plane, the adsorption unit can drive the pole piece to rotate in the horizontal plane, so as to adjust the position of the skewed pole piece in the transfer process from the feeding conveying mechanism to the inverted conveying mechanism, realize the pole piece deviation correction, thereby improving the utilization rate of the positive pole piece, improving the yield, and reducing the cost.

[0007] In a second aspect, the utility model also provides a laminating system, include: the pole piece conveying device, because the laminating system includes the pole piece conveying device, has same effect with the pole piece conveying device, do not repeat here. BRIEF DESCRIPTION OF DRAWINGS

[0008] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0009] Figure 1 It is the structure schematic view of the pole piece conveying device of the utility model embodiment in the discharging mechanism taking piece state;

[0010] Figure 2 It is the structure schematic view of the pole piece conveying device shown in the figure; Figure 1

[0011] Figure 3 It is the structure schematic view of the pole piece conveying device of another view; Figure 1

[0012] Figure 4 It is the local enlarged schematic view of A in the figure; Figure 3

[0013] Figure 5 It is the schematic view of the transfer platform and the discharging mechanism assembly structure of the utility model embodiment;

[0014] Figure 6 It is the local enlarged schematic view of the transfer platform and the discharging mechanism assembly structure shown in the figure; Figure 5

[0015] ​​​​Figure 7 As Figure 5 The top view of the assembly structure of the transfer platform and the discharging mechanism.

[0016] Marked for reference:

[0017] 1, feeding conveying mechanism; 101, feeding vacuum cavity; 102, feeding conveying belt; 2, inverted conveying mechanism; 201, inverted vacuum cavity; 202, inverted conveying belt; 2021, conveying belt through hole; 3, discharging mechanism; 301, base; 302, suction unit; 3021, pole piece area; 3022, tab area; 3023, first through hole; 3024, second through hole; 3025, suction part; 303, image acquisition unit; 304, lifting part; 305, rotating part; 306, second driving part; 307, sliding block; 4, transfer platform; 401, first guide rail; 402, sliding table; 403, second guide rail; 404, support frame; 405, third driving part; 406, fourth driving part; 5, support table; 100, pole piece. DETAILED DESCRIPTION

[0018] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] The embodiments of the present application will be described below with reference to Figures 1 to 7 .

[0020] According to the embodiments of the present application, on the one hand, a pole piece conveying device is provided, as shown in Figures 1 to 4 , the pole piece conveying device comprises: a feeding conveying mechanism 1, an inverted conveying mechanism 2 and a discharging mechanism 3. The feeding conveying mechanism 1 is adapted to convey a pole piece 100; the inverted conveying mechanism 2 is arranged above the feeding conveying mechanism 1, the inverted conveying mechanism 2 has a feeding area and a discharging area, the feeding area is located directly above part of the area of the feeding conveying mechanism 1 to suction the pole piece 100 from the feeding conveying mechanism 1; the discharging mechanism 3 is arranged below the inverted conveying mechanism 2, the discharging mechanism 3 comprises a suction unit 302, the suction unit 302 is adapted to be lifted along the height direction and adapted to rotate in the horizontal plane, the suction unit 302 is adapted to suction the pole piece 100 in the discharging area to drive the pole piece 100 to be lifted or rotated in the horizontal plane.

[0021] Among them, above refers to the direction of "up" indicated by the arrow in Figures 1 to 3 ; below refers to the direction of "down" indicated by the arrow inFigures 1 to 3 The direction indicated by the arrow in the middle as "down"; the height direction refers to Figures 1 to 6 The direction indicated by the arrow in the middle as "height direction", the height direction is the same as the up-down direction; the horizontal plane is a plane perpendicular to the height direction, that is Figures 1 to 3 And Figures 5 to 7 The plane formed by the first direction and the second direction indicated by the arrows in the middle.

[0022] The pole piece conveying device of the embodiment is provided with the feeding area of the inverted conveying mechanism 2 located directly above the partial area of the feeding conveying mechanism 1, which facilitates the inverted conveying mechanism 2 to adsorb the pole piece 100 conveyed by the feeding conveying mechanism 1, realizes the transfer of the pole piece 100, the unloading mechanism 3 is provided below the inverted conveying mechanism 2, and the unloading mechanism 3 has a lifting adsorption unit 302, which facilitates the adsorption unit 302 to rise to the inverted conveying mechanism 2 to adsorb the pole piece 100 in the unloading area and drive the pole piece 100 to separate from the inverted conveying mechanism 2, and the adsorption unit 302 can also rotate in the horizontal plane, so that the adsorption unit 302 can drive the pole piece 100 to rotate in the horizontal plane, so as to adjust the position of the pole piece 100 that is skewed in the transfer process from the feeding conveying mechanism 1 to the inverted conveying mechanism 2, realize the correction of the pole piece 100, and improve the utilization rate of the positive pole piece 100, improve the yield, and reduce the cost.

[0023] It should be noted that the feeding conveying mechanism 1 has a feeding vacuum cavity 101 and a feeding conveying belt 102, one side of the feeding conveying belt 102 facing upward is used to place the pole piece 100, and the feeding vacuum cavity 101 provides a vacuum adsorption force to adsorb the pole piece 100 on the feeding conveying belt 102; the inverted conveying mechanism 2 includes an inverted vacuum cavity 201 and an inverted conveying belt 202, the inverted vacuum cavity 201 provides a vacuum adsorption force, and the pole piece 100 is adsorbed on the side facing downward of the inverted conveying belt 202, thereby realizing the transfer of the pole piece 100.

[0024] In one embodiment, further in combination with Figures 1 to 3 As shown, the inverted conveying mechanism 2 extends along the first direction, the feeding area is located at the head of the inverted conveying mechanism 2, and the unloading area is located at the tail of the inverted conveying mechanism 2; the feeding conveying mechanism 1 extends along the second direction, and the tail of the feeding conveying mechanism 1 corresponds to the feeding area of the inverted conveying mechanism 2, which can save the overall footprint size of the pole piece conveying device along the first direction, wherein the first direction refers to Figures 1 to 3 The first direction indicated by the arrow in the middle, and the second direction refers to Figures 1 to 3The second direction is perpendicular to the first direction. The head refers to the starting position of the conveying direction of the inverted conveying mechanism 2, and the tail refers to the end position of the conveying direction of the inverted conveying mechanism 2. It can be understood that, as an alternative embodiment, the extension direction of the feeding conveying mechanism 1 can be the same as the extension direction of the inverted conveying mechanism 2, and both extend along the first direction.

[0025] In one embodiment, further in combination with Figures 3 to 6 As shown, the inverted conveying mechanism 2 includes an inverted vacuum cavity 201, an inverted conveying belt 202, and a backlight plate (not shown in the figure). The inverted conveying belt 202 surrounds the inverted vacuum cavity 201, and the backlight plate is located in the unloading area and is arranged between the lower side of the inverted vacuum cavity 201 and the inverted conveying belt 202. The unloading mechanism 3 further includes a base 301 and an image acquisition unit 303. The image acquisition unit 303 and the suction unit 302 are both arranged on the base 301, and the image acquisition unit 303 is arranged towards the backlight plate. The image acquisition unit 303 is adapted to acquire the image of the pole piece 100 corresponding to the backlight plate. Wherein, the lower side refers to Figure 3 and Figure 4 The side of the direction indicated by the arrow "down". By arranging the backlight plate between the inverted conveying belt 202 below the inverted vacuum cavity 201 and the inverted vacuum cavity 201, and arranging the image acquisition unit 303 on the unloading mechanism 3 towards the backlight plate, the image acquisition unit 303 is used to shoot the image of the pole piece 100 moving into the area corresponding to the backlight plate. The backlight plate is used to provide a light source to facilitate the image acquisition unit 303 to acquire a clear image. According to the image of the pole piece 100 acquired by the image acquisition unit 303, it can be clearly judged whether the pole piece 100 is skewed, and the unloading mechanism 3 is facilitated to correct the pole piece 100.

[0026] It should be noted that the lower side of the inverted vacuum cavity 201 is provided with a plurality of through holes. The part of the inverted conveying belt 202 below the inverted vacuum cavity 201 is tightly attached to the outer side of the inverted vacuum cavity 201. The inverted conveying belt 202 is provided with a plurality of conveying belt through holes 2021. The inverted vacuum cavity 201 provides vacuum suction force for the inverted conveying belt 202. The backlight plate is fixedly connected to the lower side of the inverted vacuum cavity 201. The lower side of the backlight plate is provided with a plurality of strip-shaped grooves for the negative pressure airflow formed by vacuum suction to pass through, so as to adsorb the pole piece 100 on the inverted conveying belt 202.

[0027] Specifically, the backlight plate is connected to a power supply. After the power supply is turned on, the backlight plate is turned on to provide a light source.

[0028] In one embodiment, the image acquisition unit 303 is a camera, which can clearly capture the pole piece 100. It can be understood that, as an alternative embodiment, the image acquisition unit 303 can also be a camera, which can also clearly record the position of the pole piece 100.

[0029] In one embodiment, further in combination with Figure 6 As shown, the number of image acquisition units 303 is two, and the two image acquisition units 303 are arranged along the first direction, each image acquisition unit 303 captures a half of the pole piece, and the two image acquisition units 303 realize complete recording of the whole pole piece 100. It can be understood that, as an alternative embodiment, the number of image acquisition units 303 can also be one, and the image acquisition unit 303 needs to have a wider shooting angle to ensure that the complete pole piece 100 can be captured.

[0030] Preferably, the image acquisition unit 303 is arranged along the first direction away from the adsorption unit 302, and the image acquisition unit 303 is arranged on the side of the adsorption unit 302 close to the feeding conveying mechanism 1 along the first direction. During the movement of the discharging mechanism 3 along the first direction towards the lower side of the inverted conveying mechanism 2, the image acquisition unit 303 first moves to the lower side of the inverted conveying mechanism 2 to collect the position of the pole piece 100, and then the adsorption unit 302 moves to the lower side of the inverted conveying mechanism 2 to correct the pole piece 100, so as to avoid the interference between the adsorption unit 302 and the image acquisition unit 303, and ensure the smooth collection of the position information of the pole piece 100 by the image acquisition unit 303.

[0031] In one embodiment, the pole piece conveying device further comprises a control module, and the image acquisition unit 303 and the discharging mechanism 3 are electrically connected to the control module, and the control module controls the action of the discharging mechanism 3 according to the position information of the pole piece 100 collected by the image acquisition unit 303. By setting the control module and electrically connecting the image acquisition unit 303 and the discharging mechanism 3 to the control module, the offset of the pole piece 100 is transmitted to the control module after the image acquisition unit 303 captures the offset position of the pole piece 100, and then the control module controls the action of the discharging mechanism 3 according to the received information, so as to control the adsorption unit 302 of the discharging mechanism 3 to move to the correct position of the offset pole piece 100, and then realize the correction of the pole piece 100, which has high automation degree and high correction accuracy.

[0032] In one embodiment, the control module is a PLC (Programmable Logic Controller) control module, which has flexible programming ability, high reliability and good expansibility.

[0033] Preferably, the inverted conveying belt 202 is a belt, which has high corrosion resistance and wear resistance, high flexibility and low cost.

[0034] In one embodiment, further in combination Figure 4 As shown, a plurality of conveying belt through holes 2021 are formed on the inverted conveying belt 202, and a plurality of suction holes are formed on the suction unit 302, and the diameter of the suction holes is greater than that of the conveying belt through holes 2021. Among them, the conveying belt through holes 2021 formed on the inverted conveying belt 202 are used for the passage of negative pressure airflow, so as to adsorb the pole piece 100 on the inverted conveying belt 202; the suction holes on the suction unit 302 are in communication with the inner cavity of the suction unit 302, and when the inner cavity of the suction unit 302 is in a negative pressure vacuum environment, the suction unit 302 adsorbs the pole piece 100 through the suction holes. By setting the diameter of the suction holes on the suction unit 302 to be greater than that of the conveying belt through holes 2021 on the inverted conveying belt 202, the suction unit 302 can provide greater suction force than the inverted conveying mechanism 2, which facilitates the adsorption of the pole piece 100 on the suction unit 302 and the smooth transfer of the pole piece 100 from the inverted conveying mechanism 2 to the downward mechanism 3.

[0035] In one embodiment, further in combination Figure 6 As shown, the suction unit 302 is a suction disc, the suction disc includes a pole piece area 3021 and a tab area 3022, the suction holes include first through holes 3023 located in the pole piece area 3021 and second through holes 3024 located in the tab area 3022, and the diameter of the first through holes 3023 is greater than that of the second through holes 3024. It should be noted that the pole piece 100 includes a coating area and a tab, the coating area is coated with an active material layer, and the density of the coating area is greater than that of the tab, so the coating area needs greater suction force. By setting the suction unit 302 as a suction disc, the suction disc has simple and reliable structure and good suction force, and by setting the suction disc to include the pole piece area 3021 and the tab area 3022, the pole piece area 3021 can correspond to the coating area of the pole piece 100, the tab area 3022 can correspond to the tab, and the first through holes 3023 on the pole piece area 3021 are greater than the second through holes 3024 on the tab area 3022, so the pole piece area 3021 can provide greater suction force, which on the one hand ensures that the pole piece area 3021 can provide sufficient suction force to the coating area, ensuring that the pole piece 100 can be adsorbed from the inverted conveying belt 202, and on the other hand avoids that the suction force of the tab area 3022 is too large to damage the tab which is relatively weak in structure, thereby ensuring the quality of the pole piece 100 and the product yield.

[0036] In one embodiment, further in combination Figure 6 As shown, the suction unit 302 further includes a suction part 3025, which is arranged at the edge position of the pole piece area 3021 and used for adsorbing the edge position of the coating area of the pole piece 100, thereby enhancing the adsorption effect of the pole piece 100.

[0037] In one embodiment, further in combination Figure 6As shown, the blanking mechanism 3 further comprises a rotating part 305 rotatably connected to the base 301, and a second driving part 306 arranged on the base 301 and connected to the rotating part 305, the second driving part 306 being adapted to drive the rotating part 305 to rotate relative to the base 301; a lifting part 304 and a first driving part, the lifting part 304 being liftably connected to the rotating part 305, the adsorption unit 302 being fixedly connected to a top end of the lifting part 304, and the first driving part being adapted to drive the lifting part 304 to lift. Wherein, the top end refers to an end in a direction indicated by an arrow as "up" in the figure; the lifting part 304 lifts along an "up and down" direction indicated by an arrow in the figure. Figures 1 to 6 Figures 1 to 6

[0038] The pole piece conveying device of the embodiment, by arranging the rotatable rotating part 305 on the base 301 and arranging the lifting part 304 on the rotating part 305, the second driving part 306 drives the rotating part 305 to rotate relative to the base 301, which drives the lifting part 304 and the adsorption unit 302 to rotate relative to the base 301, so as to realize the rotation of the adsorption unit 302 in the horizontal plane, and further realize the rotation of the adsorption unit 302 driving the pole piece 100, so as to realize the deviation correction of the pole piece 100. Meanwhile, by fixing the adsorption unit 302 to the top end of the lifting part 304, the first driving part drives the lifting part 304 to lift, which drives the adsorption unit 302 to lift, so as to realize the adsorption unit 302 to approach or move away from the inverted conveying belt 202, which is convenient for the adsorption unit to adsorb and take away the pole piece on the inverted conveying belt 202, and has high automation and is convenient for operation.

[0039] Optionally, the lifting part 304 is driven by a lifting screw rod, and the first driving part (not shown in the figure) is arranged on the side surface, and the lifting of the lifting part 304 is realized by the lifting screw rod transmission; the rotating part 305 is a rotating disc, and the second driving part 306 is a motor for providing power, and the power of the motor is transmitted to the rotating part 305 through a transmission structure, so as to drive the rotating part 305 to rotate, which has high reliability and good stability.

[0040] In one embodiment, the blanking mechanism 3 further comprises a first driving part and a second driving part, the first driving part being adapted to drive the lifting part 304 to lift, and the second driving part being adapted to drive the rotating part 305 to rotate relative to the base 301. Figures 1 to 3 ​​As shown, the pole piece conveying device further comprises a transfer platform 4 arranged below the inverted conveying mechanism 2 and spaced from the feeding conveying mechanism 1, the transfer platform 4 extends to below the discharging area of the inverted conveying mechanism 2 along the first direction, and the base 301 is movably connected to the transfer platform 4. The feeding conveying mechanism 1 corresponds to the head of the inverted conveying mechanism 2, and the transfer platform 4 corresponds to the tail of the inverted conveying mechanism 2. By arranging the transfer platform 4 below the inverted conveying mechanism 2 and extending to below the discharging area of the inverted conveying mechanism 2 along the first direction, the base 301 movably connected to the transfer platform 4 can move along the first direction. When the pole piece 100 on the inverted conveying belt 202 does not completely enter the coverage range of the suction unit 302 along the first direction, the suction unit 302 can suck part of the pole piece and move the suction unit 302 along the first direction through the base 301, so as to bring the pole piece 100 into the coverage range of the suction unit 302, thereby ensuring the smoothness of the pole piece 100 rectification process of the suction unit 302, ensuring the rectification effect, and realizing the movement of the base 301 between the area below the discharging area and the area outside the inverted conveying mechanism 2, so as to realize the suction of the pole piece 100 from the inverted conveying belt 202 by the suction unit 302 connected to the base 301 and the transfer of the pole piece 100 to the next station for lamination, thereby ensuring the smoothness of the pole piece 100 transfer process.

[0041] In one embodiment, further in combination Figures 5 to 7 As shown, the transfer platform 4 comprises a first guide rail 401 and a sliding table 402. The first guide rail 401 is fixed relative to the inverted vacuum cavity 201 and extends along the first direction; the sliding table 402 is in sliding cooperation with the first guide rail 401, and the base 301 is connected to the sliding table 402. By arranging the transfer platform 4 to comprise the first guide rail 401 fixed relative to the inverted vacuum cavity 201 and the sliding table 402 slidingly connected to the first guide rail 401, the first guide rail 401 is fixed relative to the body of the inverted conveying mechanism 2, and the sliding table 402 can slide along the first guide rail 401 relative to the inverted conveying mechanism 2, thereby driving the base 301 to move along the first direction, realizing the movement of the base 301 along the first direction to approach or move away from the inverted conveying mechanism 2. The guide rail and sliding table cooperation mode has simple structure and good guidance, so that the movement of the base 301 along the first direction is stable, and the reliability of the pole piece 100 transfer process is improved.

[0042] In one embodiment, further in combination Figure 5As shown, the transfer platform 4 further comprises a third driving part 405 fixed opposite to the first guide rail 401, and the third driving part 405 is suitable for driving the sliding table 402 to move relative to the first guide rail 401. The third driving part 405 provides a driving force for the movement of the sliding table 402 in the first direction, facilitating the movement of the sliding table 402, thereby ensuring the smooth movement of the adsorption unit 302 to the lower pole piece 100 of the inverted conveying mechanism 2, and improving the automation degree and reliability.

[0043] In one embodiment, the third driving part 405 is a linear motor, which is simple in structure, high in precision, fast in response speed, mature in technology, and low in cost. It can be understood that, as an alternative implementation, the third driving part 405 can also be an electric cylinder, a pneumatic cylinder, etc.

[0044] In addition, in other embodiments, the transfer platform 4 can also not be provided with the sliding table 402, but a roller structure matched with the first guide rail 401, which is connected to the base 301, can also realize the guiding effect on the base 301.

[0045] In one embodiment, further in combination with Figures 1 to 3 As shown, the pole piece conveying device further comprises a support table 5, and the feeding conveying mechanism 1, the inverted conveying mechanism 2 and the transfer platform 4 are all connected to the support table 5. Specifically, the body of the feeding conveying mechanism 1 and the body of the inverted conveying mechanism 2 are fixedly connected to the support table 5, and the first guide rail 401 of the transfer platform 4 is fixedly connected to the support table 5 through the support frame 404, thereby realizing the fixation of the first guide rail 401 relative to the body of the inverted conveying mechanism 2.

[0046] In one embodiment, further in combination with Figure 6 As shown, the sliding table 402 is provided with a second guide rail 403 extending in a second direction, and the base 301 is fixedly connected with a sliding block 307 in sliding cooperation with the second guide rail 403, wherein the second direction is perpendicular to the first direction. By providing the second guide rail 403 extending in the second direction on the sliding table 402, and the base 301 in sliding cooperation with the second guide rail 403 through the sliding block 307, the base 301 can move relative to the sliding table 402 in the second direction, thereby driving the adsorption unit 302 to move in the second direction, and further realizing the deviation correction of the adsorption unit 302 to the pole piece 100 in the second direction, increasing the deviation correction dimension and further improving the deviation correction reliability.

[0047] In one embodiment, further in combination with Figure 7As shown, the transfer platform 4 further comprises a fourth driving part 406 fixedly connected to the sliding table 402 and adapted to drive the base 301 to move along the second guide rail 403. The fourth driving part 406 provides driving force for the movement of the base 301 in the second direction, and has high automation and high reliability. The fourth driving part 406 can be a linear motor, an electric cylinder, a pneumatic cylinder, etc.

[0048] The transfer process of the pole piece 100 is as follows:

[0049] Firstly, the pole piece 100 is placed on the feeding conveying mechanism 1, the feeding vacuum cavity 101 is vacuumized, the pole piece 100 is adsorbed on the feeding conveying belt 102, the feeding conveying belt 102 conveys the pole piece 100 in the second direction to below the feeding area of the inverted conveying mechanism 2, the part of the feeding vacuum cavity 101 corresponding to the feeding area of the inverted conveying mechanism 2 is broken vacuum, the adsorption of the pole piece 100 is released, at the same time, the inverted vacuum cavity 201 of the inverted conveying mechanism 2 is vacuumized, the pole piece 100 is adsorbed on the inverted conveying belt 202; then, the pole piece 100 moves with the inverted conveying belt 202 in the first direction to the discharging area of the inverted conveying mechanism 2, the discharging mechanism 3 moves to the position corresponding to the pole piece 100 in the discharging area according to the offset information of the pole piece 100; then, the inverted vacuum cavity 201 corresponding to the discharging area is broken vacuum, the adsorption of the pole piece 100 is released, at the same time, the adsorption unit 302 of the discharging mechanism 3 is vacuumized, the pole piece 100 is adsorbed on the adsorption unit 302, then the adsorption unit 302 is corrected, the pole piece 100 is corrected, and the pole piece 100 is corrected. The deviation of the pole piece 100 is corrected; finally, the discharging mechanism 3 drives the pole piece 100 to descend in the height direction and move in the first direction away from the inverted conveying mechanism 2, and is transferred to the next station for subsequent lamination process.

[0050] The offset of the pole piece 100 includes offset in the first direction, offset in the second direction, and angular offset. After the offset position of the pole piece 100 is shot by the image acquisition unit 303, the offset amounts in the first direction, the second direction and the angle are transmitted to the control module, the control module controls the movement of the discharging mechanism 3 according to the position information transmitted by the image acquisition unit 303, the movement of the discharging mechanism 3 includes movement in the first direction and the second direction, control of the adsorption unit 302 to ascend and descend and rotate in the horizontal plane, so that the adsorption unit 302 faces the offset pole piece 100, then the adsorption unit 302 can correct the pole piece 100 after correction, and the pole piece 100 is corrected. The deviation of the pole piece 100 is corrected. It should be noted that if the offset amount is within the correction range but outside the limit correction range of the adsorption unit 302, multiple corrections are required. Specifically, in the first level correction, the adsorption unit 302 moves to the limit position and corrects the adsorption and movement of the pole piece 100, then the inverted conveying mechanism 2 adsorbs the pole piece 100 again, then the adsorption unit 302 moves twice for correction, until the pole piece 100 is no longer skewed.

[0051] Specifically, taking the center point of the pole piece 100 as the identification point, the deviation correction algorithm is as follows:

[0052] First, set the reference value of the teaching initial position of the pole piece 100 as [X1, Y1, T1], wherein X1, Y1, T1 represent the coordinates of the center point of the pole piece 100 along the X direction, the coordinates along the Y direction, and the rotation angle, respectively, the X direction is the same as the first direction, and the Y direction is the same as the second direction;

[0053] First deviation correction: set the deviation correction limit value as [X0, Y0, T0], identify the actual position of the pole piece 100 as [X, Y, T] through the image acquisition unit 303, if the actual position of the pole piece 100 satisfies [X≤X0, Y≤Y0, T≤T0], it indicates that the pole piece 100 does not exceed the deviation correction range, and the pole piece 100 is corrected, but if [X>X0, Y>Y0, T>T0], it indicates that the pole piece 100 exceeds the deviation correction range, and the pole piece 100 is not qualified for positioning, and is treated as waste; in the deviation correction process, according to the difference between the actual position of the pole piece 100 and the teaching initial position, the parameter is set to correct the compensation, specifically, the compensation parameter is [ΔX, Δ Y, Δ T], wherein, the center of the deviated pole piece 100 is corrected to the teaching initial position;

[0054] If the first deviation correction cannot reach the set [X1, Y1, T1] due to the limited stroke of the adsorption unit 302, secondary deviation correction is required, and the deviation correction principle is the same as above. First, move the pole piece 100 to the limit position through the adsorption unit 302, and then move the pole piece 100 to perform secondary deviation correction, the secondary deviation correction compensation parameter is [ΔX′, Δ Y′, Δ T′], wherein [ΔX′, ΔY′, ΔT′]=[X1-ΔX, Y1-ΔY, T1-ΔT].

[0055] It should be noted that the deviation correction limit value [X0, Y0, T0] can be set as [200mm, 200mm, 5°].

[0056] According to the embodiment of the present application, on the other hand, a lamination system is also provided, comprising: the pole piece conveying device described above. The lamination system further comprises a lamination device arranged downstream of the pole piece conveying device. The blanking mechanism 3 of the pole piece conveying device conveys the deviation-corrected pole piece along the first direction to the lamination device, and the lamination device laminates.

[0057] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope of the appended claims.

Claims

1. A pole piece conveying device, characterized by, The application relates to a polar plate conveying device. The polar plate conveying device comprises a feeding conveying mechanism (1) suitable for conveying polar plates (100), an upside-down conveying mechanism (2) arranged above the feeding conveying mechanism (1), wherein the upside-down conveying mechanism (2) has an upper feeding area and a lower feeding area, the upper feeding area is located directly above a part of the feeding conveying mechanism (1) to adsorb the polar plates (100) from the feeding conveying mechanism (1), and a lower feeding mechanism (3) arranged below the upside-down conveying mechanism (2), wherein the lower feeding mechanism (3) comprises an adsorption unit (302) suitable for lifting along the height direction and rotating in the horizontal plane, and the adsorption unit (302) is suitable for adsorbing the polar plates (100) in the lower feeding area. The upside-down conveying mechanism (2) comprises an upside-down vacuum cavity (201), an upside-down conveying belt (202) surrounding the upside-down vacuum cavity (201), and a backlight plate arranged between the downside of the upside-down vacuum cavity (201) and the upside-down conveying belt (202) in the lower feeding area. The lower feeding mechanism (3) further comprises a base (301) and an image acquisition unit (303), wherein the image acquisition unit (303) and the adsorption unit (302) are arranged on the base (301), the image acquisition unit (303) is arranged towards the backlight plate, and the image acquisition unit (303) is suitable for acquiring the image of the polar plates (100) corresponding to the backlight plate.

2. The pole piece conveyor of claim 1, wherein, The upside-down conveying belt (202) is provided with a plurality of conveying belt through holes (2021), and the adsorption unit (302) is provided with a plurality of adsorption holes, wherein the diameter of the adsorption holes is larger than that of the conveying belt through holes (2021). The adsorption unit (302) is a suction disc, the suction disc comprises a polar plate area (3021) and a tab area (3022), the adsorption holes comprise first through holes (3023) in the polar plate area (3021) and second through holes (3024) in the tab area (3022), and the diameter of the first through holes (3023) is larger than that of the second through holes (3024).

3. The pole piece conveyor of claim 2, wherein, The polar plate conveying device further comprises a control module, the image acquisition unit (303) and the lower feeding mechanism (3) are electrically connected with the control module, and the control module controls the action of the lower feeding mechanism (3) according to the position information of the polar plates (100) acquired by the image acquisition unit (303).

4. The pole piece conveyor of claim 3, wherein, The lower feeding mechanism (3) further comprises a rotating part (305) rotatably connected to the base (301) and a second driving part (306) arranged on the base (301) and connected with the rotating part (305), wherein the second driving part (306) is suitable for driving the rotating part (305) to rotate relative to the base (301).

5. The pole piece conveyor of claim 2, wherein, ​ 6. The pole piece conveyor of any one of claims 2 to 5, wherein, ​ ​ The lifting part (304) is connected to the rotating part (305) in a lifting manner, the adsorption unit (302) is fixedly connected to the top end of the lifting part (304), and the first driving part is suitable for driving the lifting part (304) to lift.

7. The pole piece conveyor of any one of claims 2 to 5, wherein, The pole piece conveying device further comprises a transfer platform (4) arranged below the inverted conveying mechanism (2) and spaced apart from the feeding conveying mechanism (1), the transfer platform (4) extends to below the discharging area of the inverted conveying mechanism (2) along a first direction, and the base (301) is movably connected to the transfer platform (4).

8. The pole piece conveyor of claim 7, wherein, The transfer platform (4) comprises: a first guide rail (401) fixed relative to the inverted vacuum cavity (201) and extending along the first direction; a sliding table (402) in sliding cooperation with the first guide rail (401), and the base (301) is connected to the sliding table (402).

9. The pole piece conveyor of claim 8, wherein, The sliding table (402) is provided with a second guide rail (403) extending along a second direction, the base (301) is fixedly connected with a sliding block (307), and the sliding block (307) is in sliding cooperation with the second guide rail (403), wherein the second direction is perpendicular to the first direction.

10. A lamination system characterized by, The pole piece conveying device according to any one of claims 1 to 9. The pole piece conveying device according to any one of claims 1 to 9.

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