Sheet picking device

Abstract

The utility model relates to a sheet picking device, which comprises a sheet suction mechanism and a sheet separation mechanism, the sheet suction mechanism is positioned above a sheet placing area and used for sucking sheets, the sheet separation mechanism is positioned beside the sheet suction mechanism and comprises a brush wheel and a power source for driving the brush wheel to rotate, and the brush wheel comprises a roller body and a plurality of first bristle bundles. The roller body is provided with a plurality of first bristle bundles which are sequentially distributed on the circumferential surface of the roller body in the circumferential direction and the axial direction of the roller body, and is characterized in that the heights of the plurality of first bristle bundles are gradually increased in the direction opposite to the rotating direction of the brush wheel, so that after the roller body is unfolded, the end parts of the plurality of first bristle bundles jointly form a first inclined surface; and the lowest first bristle bundle is at least just contacted with the edge of the sucked sheet. After the structure is adopted, the brush wheel can simulate the finger of a person and brush and press the edge of a sucked sheet in a light-to-heavy manner, so that the phenomenon that the sheet is scratched is effectively avoided, and meanwhile, the gradually increased brushing pressure is utilized to facilitate the separation of the adhered sheet.

Description

Technical Field

[0001] The utility model relates to the technical field of a material picking device, in particular to a thin slice picking device which is mainly used for picking up thin slices. Background Art

[0002] Thin sheets are widely used in many products, such as optical films used in control panels, pole pieces in lithium batteries, and protective films on the surface of shells. After being cut, they are stacked into a pile. When used later, they are separated piece by piece by a picking device and transported to the corresponding workstation or transferred to a conveyor belt. In the production process, since the above-mentioned thin sheets will generate static electricity, and vacuum may also be formed between adjacent thin sheets during the stacking process of the thin sheets, the adjacent thin sheets after stacking become difficult to separate, that is, adhesion occurs, resulting in the picking of the top thin sheet, and the thin sheets below or even several thin sheets below will be picked up together. Therefore, in addition to the sheet suction mechanism, the current picking device is often equipped with a sheet separation mechanism, wherein the sheet suction mechanism often includes a movable seat, a suction cup fixed on the lower surface of the movable seat, and a driving member that drives the movable seat to move as needed. The sheet separation mechanism includes a brush wheel and a power source for driving the brush wheel to rotate. For example, such a rotating brush wheel is disclosed in the document with Chinese patent authorization announcement number CN219807443U. At the same time, the document is also auxiliaryly configured with an air blowing head. The sheets are separated under the joint action of the rotating brush wheel and the air blowing head, so that the adhered sheets can be removed in time.

[0003] However, it is found in actual use that the rotating brush sometimes scratches the thin slices during rotation, and the separation effect is not very ideal for the thin slices with severe adhesion. Therefore, the existing picking device needs to be further improved. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a thin slice picking device in view of the current status of the prior art, so that the picking work can be carried out smoothly and the surface of the thin slice can be avoided from being damaged.

[0005] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a thin film picking device, including a film suction mechanism located above the film placement area for sucking and holding the thin films and a film separation mechanism located next to the film suction mechanism, the film suction mechanism includes a movable seat, a suction cup fixed on the lower surface of the movable seat and a driving member for driving the movable seat to move, the film separation mechanism includes a brush wheel and a power source for driving the brush wheel to rotate, the brush wheel includes a roller body and a plurality of first brush bundles, the plurality of first brush bundles are sequentially distributed on the circumferential surface of the roller body along the circumferential direction and axial direction of the roller body, and is characterized in that: against the rotation direction of the brush wheel, the heights of the plurality of first brush bundles gradually increase, and after the roller body is unfolded, the ends of the plurality of first brush bundles jointly form a first inclined surface, and the lowest first brush bundle must at least just contact the edge of the sucked thin film.

[0006] In the above scheme, preferably, the lengths of the plurality of first bristle bundles are designed to be the same, and the cross section of the roller body is designed to be a cam structure with a gradually increasing radius; or, the lengths of the plurality of first bristle bundles are gradually increased along the opposite rotation direction of the roller body, and the cross section of the roller body is designed to be a circular structure. With such a structure, the same purpose can be achieved.

[0007] In the above schemes, further improvements can be made by including an upright brush for brushing the edge of the sucked sheet on the same side as the brush wheel, the brush being mounted on a vibrating seat driven by a vibrator, that is, the up and down shaking of the brush assists the brush wheel in further separating the adhered sheets.

[0008] A further improvement is that the brush comprises an upright plate body and a plurality of second bristle bundles arranged on the surface of the plate body and facing the sucked sheet, the lengths of the plurality of second bristle bundles gradually increase from bottom to top so that the ends of the plurality of second bristle bundles jointly form a second inclined surface. The second bristle bundles can also brush and press the edge of the sucked sheet in a light and heavy manner to further achieve the purpose of complete separation.

[0009] In the above-mentioned improved scheme, the vibration seat may include a horizontally placed lever and an upright guide rail, the middle part of the lever is placed on a support, the scrub brush can be slidably restrained on the guide rail, and the back of the scrub brush passes through the guide hole extending up and down on the guide rail and is hinged to one end of the lever, the other end of the lever is connected to the vibrator through a connecting rod, and a spring is connected to the lever between one end of the lever and the support to make one end of the lever always have a downward rotation tendency. By utilizing the restraint of the lever and the guide rail and the return of the spring, the amplitude of the scrub brush shaking up and down can be increased to meet the separation needs of some thin sheets.

[0010] Furthermore, a long hole extending along the length of the lever is formed on the other end of the lever, and the upper end of the connecting rod can move in the long hole and be positioned by a fastener. The long hole can be used to allow the connecting rod to move along the length of the lever to change the force arm, thereby adjusting the vibration amplitude of the scrub brush.

[0011] In order to facilitate the above adjustment, it is better that a pressure wheel is installed at the lower end of the connecting rod to abut against the upper end surface of the vibrator, the pressure wheel is constrained in a limit frame and can move along the length direction of the lever, and the limit frame is fixed on the vibrator.

[0012] A further improvement is that a fan can be included on the same side as the brush wheel, with the air outlet of the fan facing the sheet and corresponding to the bottom of the sucked sheet. In this case, the air outlet of the fan can be connected to an air guide cover, and the air outlet of the air guide cover is designed as a narrow and long opening, which corresponds to the middle area of ​​the side of the sheet under the sucked sheet.

[0013] Compared with the prior art, since the brush wheel in the utility model is designed with a first bristle bundle whose height gradually increases along the circumferential direction, therefore, under the drive of the driving member, during the rotation of the brush wheel, the shortest first bristle bundle among the plurality of first bristle bundles first contacts the edge of the sucked thin sheet, and then the longer first bristle bundles successively brush and press the corresponding edges of the thin sheets, that is, the brush wheel can simulate human fingers and brush and press the edges of the sucked thin sheets in a light to heavy manner, which effectively avoids scratching the thin sheets and at the same time utilizes the gradually increasing brush pressure to facilitate the separation of the adhered thin sheets. The trial production proves that the utility model can overcome the defects in the prior art and ensure that the surface of the thin sheet is not scratched while the sheet picking work is carried out smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model;

[0015] Figure 2 for Figure 1 An enlarged schematic diagram of part I in FIG.

[0016] Figure 3 for Figure 2 Schematic diagram of another direction;

[0017] Figure 4 for Figure 1 Schematic diagram of the middle plate brush, vibrator and vibration seat (after removing the spring);

[0018] Figure 5 for Figure 1 Schematic diagram of the structure of the middle brush wheel;

[0019] Figure 6 for Figure 5Schematic diagram of the brush wheel after it is unfolded. DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] like Figures 1 to 6 As shown, the sheet picking device is used to pick up the optical film (i.e., the sheet 100 described below) used in the control panel. The sheet 100 is cut into a square shape and placed on a sheet placement area. The sheet placement area is designed on a movable table 300. The movable table 300 is driven by a lifting mechanism (such as a screw nut pair driven by a motor) and can be lifted and lowered as needed. In order to ensure that the sheet 100 is reliably placed on the sheet placement area, a plurality of limit columns 400 are erected on the workbench 200. Each limit column 400 is sequentially arranged around the movable table 300 (sheet placement area) and abuts against the edge of the sheet on the sheet placement area. In order to match the position limit of sheets of different sizes, a magnet is arranged at the bottom of the limit column 400, which is adsorbed on any position of the workbench 200 by the magnet, so that sheets 100 of various sizes can be conveniently limited.

[0022] The above-mentioned sheet picking device includes a sheet suction mechanism 10 located above the sheet placement area for sucking and holding the sheet 100 and a sheet separation mechanism 20 located next to the sheet suction mechanism, wherein the sheet suction mechanism 10 includes a movable seat 101, a suction cup 102 fixed on the lower surface of the movable seat 101 and a driving member (not shown in the figure) for driving the movable seat to move. Figure 1 In the embodiment, there are four suction cups 102, which are sequentially arranged at the four corners of the lower surface of the movable seat 101. Each suction cup 102 is connected to the air source through an air delivery pipe, and a control valve is arranged on the delivery pipe. Since the above-mentioned film suction mechanism 10 is a prior art, it will not be described in detail here.

[0023] In this embodiment, the thin film separation mechanism 20 is mainly improved. The thin film separation mechanism 20 includes a brush wheel 1 and a power source 2 for driving the brush wheel 1 to rotate, wherein the brush wheel 1 includes a roller body 11 and a plurality of first bristle bundles 12, and the plurality of first bristle bundles 12 are sequentially distributed on the surface of the roller body along the circumferential direction and axial direction of the roller body 11, and the heights of the plurality of first bristle bundles 12 gradually increase against the rotation direction of the brush wheel, and the lowest first bristle bundle must at least just contact the edge of the sucked thin film 100. With such a design, after the roller body 11 is unfolded, the ends of the plurality of first bristle bundles 12 jointly form a first inclined surface, see Figure 6, the angle α between the first inclined plane and the horizontal plane is 10°-15°. In the above requirements, there are many ways to realize that the height of the multiple first bristle bundles 12 on the surface of the drum body 11 is gradually increased, such as the cross-section of the drum body 11 is designed to be a circular structure, that is, the drum body is a straight cylinder structure, and the lengths of the multiple first bristle bundles are gradually increased in the direction opposite to the rotation direction of the drum body. However, considering the management of the first bristle bundles after processing and the convenience of production, in this embodiment, the lengths of the multiple first bristle bundles 12 are designed to be the same, and the cross-section of the drum body 11 is designed to be a cam structure with a gradually increasing radius, such as Figure 5 shown.

[0024] The power source 2 in the above-mentioned sheet separation mechanism 20 is a motor, and the motor can be connected to the rotating shaft of the roller body 11 through a reduction mechanism (a gear set can be used). In this way, when the motor rotates, the reduction mechanism drives the roller body to rotate, thereby driving the first bristle bundles 12 on the roller body to rotate, so that the lowest first bristle bundle among the first bristle bundles first contacts the edge of the sucked sheet 100, see Figure 2 Then, the longer first bristle bundles brush the edges of the corresponding thin sheets 100 in turn. That is, by utilizing the first inclined surface, the brush wheel 1 can simulate the movement of human fingers when rotating, and continuously brush the edges of the sucked thin sheets in a light to heavy manner. This can effectively avoid scratching the surface of the thin sheets, and at the same time, the gradually increasing brush pressure is conducive to the separation of the adhered thin sheets.

[0025] In this embodiment, in order to further improve the separation effect, an upright plate brush 3 is also included, which is distributed on the same side as the brush wheel. The plate brush 3 can be set on a vibration seat 5 driven by a vibrator 4. The vibrator 4 is an existing technology. The vibrator 4 is used to make the vibration seat 5 or a part of the vibration seat vibrate up and down, thereby driving the plate brush 3 to shake up and down, so that each second bristle bundle 32 on the plate brush 3 brushes the edge of the sucked thin sheet 100 up and down to assist the brush wheel 1, so that two or more thin sheets with serious adhesion can be separated in time. In addition, in this embodiment, the above-mentioned second bristle bundle 32 is further improved, that is, the plate brush 3 includes an upright plate body 31 and a plurality of second bristle bundles 32 arranged on the surface of the plate body 31 and facing the thin sheet. The length of each second bristle bundle 32 gradually increases from bottom to top, so that the ends of the plurality of second bristle bundles 32 together form a second inclined surface. In this way, during the shaking process of the scrub brush 3, the second bristle bundle 32 also brushes and presses the edge of the sucked thin sheet 100 in a light-to-heavy manner, and the same principle is used to achieve the purpose of avoiding scratching the thin sheet and improving the separation rate.

[0026] After many tests, it was found that the separation effect was best when the angle between the second inclined surface and the vertical surface was also 10°-15°.

[0027] And considering the different sizes of the slices 100, a plurality of brushes can be provided, each brush being detachably connected to the vibration seat, so that the brush 3 can be conveniently moved according to the slices 100 of different specifications to reach the best position for brushing pressure.

[0028] In actual production, for different sheets, it is sometimes necessary to increase the up and down shaking amplitude of the brush 3, and the vibrator cannot meet this requirement. In this embodiment, further improvements are made. Specifically, the vibration seat 5 is designed as follows. It includes a horizontally placed lever 51 and an upright guide rail 52. The middle part of the lever 51 is placed on a support 53. The brush 3 can be slid up and down on the guide rail 52, and the back of the brush 3 passes through the guide hole 521 extending up and down on the guide rail 52 and is hinged to one end of the lever 51. The other end of the lever 51 is provided with a groove along the guide rail 52. The long hole 511 extending in the length direction of the lever, the upper end of the connecting rod 54 can move in the long hole 511 and be positioned by a fastener. Specifically, the upper end of the connecting rod 54 can be designed as a screw, which is connected to a butterfly nut 55 after passing through the long hole. The lower end of the connecting rod 54 is equipped with a pressure wheel 56 that abuts against the upper end surface of the vibrator 4. The pressure wheel 56 is also constrained in a limit frame 57 and can move in the limit frame 57 along the length direction of the lever 51. The limit frame 57 is fixed on the upper end surface of the vibrator 4, so that the other end of the lever 51 is connected to the vibrator 4 through the connecting rod 54. At the same time, a spring 58 is connected to the lever between one end of the lever 51 and the support 53. In the figure, the guide rail 52 and the support 53 are connected through a bottom plate 59. The upper end of the spring 58 is connected to the lever 51, and the lower end is connected to the bottom plate 59, so that one end of the lever 51 always has a tendency to rotate downward. The top of the support 53 may be designed with a roller, which can be in rolling contact with the lever 51. When the vibrator 4 is started to vibrate up and down, the other end of the lever 51 is shaken up and down through the pressure wheel 56 and the connecting rod 54, and at the same time, one end of the lever is shaken accordingly, and the scrub brush 3 is also shaken up and down under the action of the spring 58 and the guidance of the guide rail 52. And the force arm can be changed by moving the connecting rod 54 in the long hole 511, and then the shaking amplitude of the scrub brush 3 can be further adjusted, and the adjustment is also very convenient.

[0029] In this embodiment, a blower 6 is also included, which is distributed on the same side as the brush wheel. The blowing port of the blower 6 faces the thin sheet and corresponds to the bottom of the top thin sheet. In order to concentrate the blowing, the blowing port of the blower is connected to a wind guide cover 7. The air outlet of the wind guide cover 7 is designed to be a narrow and long opening, which corresponds to the middle area of ​​the side of the thin sheet under the top thin sheet. The blower 6 can be an ion blower. By using the guide cover 7, a negative pressure can be formed under the sucked thin sheet. By using the negative pressure, the thin sheet adhered to the lower surface of the top thin sheet can be sucked to move downward, so as to be more conducive to the separation of the adhered thin sheet.

[0030] The base plate 59, fan 6 and motor can be installed on their respective sliders 8 as needed. The sliders can slide on the slide rails 9. Therefore, when necessary, the position of each slider 8 can be adjusted at any time to change the position of the brush wheel 1, the plate brush 3 and the air guide cover 7.

[0031] When in use, the driving part is used to move the movable seat up and down, front and back, left and right as needed. When the suction cup is located above the thin sheet, the suction cup sucks the topmost thin sheet. At the same time, the motor, vibrator and fan are started to rotate the brush wheel. The first bristle bundle brushes and presses the edge of the sucked thin sheet in a light-to-heavy manner. At the same time, the second bristle bundle of the plate brush shakes up and down, also brushing and pressing the edge of the sucked thin sheet in a light-to-heavy manner. The wind blown out by the fan is used to form a negative pressure under the sucked thin sheet through the wind guide cover, sucking the thin sheet adhered to the lower surface of the topmost thin sheet to move downward. Such combined cooperation allows the adhered thin sheets to be quickly separated, and then the topmost thin sheet sucked by the suction cup is transported to the conveyor belt through the driving mechanism to be smoothly delivered to the workstation of the next process.

Claims

1. A sheet picking device, comprising a sheet suction mechanism (10) located above a sheet placement area for sucking and holding sheets, and a sheet separation mechanism (20) located next to the sheet suction mechanism, the sheet suction mechanism (10) comprising a movable seat (101), a suction cup (102) fixed on the lower surface of the movable seat, and a driving member for driving the movable seat to move, the sheet separation mechanism (20) comprising a brush wheel (1) and a power source (2) for driving the brush wheel to rotate, the brush wheel (1) comprising a roller body (11) and a plurality of first bristle bundles (12), the plurality of first bristle bundles (12) being sequentially distributed on the circumferential surface of the roller body (11) along the circumferential direction and axial direction of the roller body (11), characterized in that: The heights of the plurality of first bristle bundles (12) gradually increase in a direction opposite to the rotation direction of the brush wheel, so that after the roller body (11) is unfolded, the ends of the plurality of first bristle bundles (12) jointly form a first inclined surface, and the lowest first bristle bundle (12) at least just contacts the edge of the sucked sheet (100).

2. The sheet picking device according to claim 1, characterized in that: The lengths of the plurality of first bristle bundles (12) are designed to be the same, and the cross section of the roller body (11) is designed to be a cam structure with a gradually increasing radius; Alternatively, the lengths of the plurality of first bristle bundles (12) gradually increase along a direction opposite to the rotation direction of the roller body (11), and the cross section of the roller body (11) is designed to be a circular structure.

3. The sheet picking device according to claim 1 or 2, characterized in that: It also includes an upright plate brush (3) distributed on the same side as the brush wheel (1) for brushing the edge of the sucked sheet. The plate brush (3) is installed on a vibration seat (5) driven by a vibrator (4).

4. The sheet picking device according to claim 3, characterized in that: The scrub brush (3) comprises an upright plate body (31) and a plurality of second bristle bundles (32) arranged on the surface of the plate body (31) and facing the sucked sheet, wherein the lengths of the plurality of second bristle bundles (32) gradually increase from bottom to top so that the ends of the plurality of second bristle bundles (32) jointly form a second inclined surface.

5. The sheet picking device according to claim 4, characterized in that: The vibration seat (5) includes a horizontally placed lever (51) and an upright guide rail (52). The middle part of the lever (51) is placed on a support (53). The brush (3) can be slidably restrained on the guide rail (52) up and down, and the back of the brush (3) passes through the guide hole (521) extending up and down on the guide rail (52) and is hinged to one end of the lever (51). The other end of the lever (51) is connected to the vibrator (4) through a connecting rod (54). At the same time, a spring (58) is connected to the lever (51) between one end of the lever (51) and the support (53) to allow one end of the lever (51) to always have a downward rotation tendency.

6. The sheet picking device according to claim 5, characterized in that: The other end of the lever (51) is provided with a long hole (511) extending along the length direction of the lever (51), and the upper end of the connecting rod (54) can move in the long hole and be positioned by a fastener.

7. The sheet picking device according to claim 6, characterized in that: The lower end of the connecting rod is provided with a pressure wheel (56) which abuts against the upper end surface of the vibrator (4). The pressure wheel (56) is constrained in a limiting frame (57) and can move along the length direction of the lever (51). The limiting frame (57) is fixed on the vibrator.

8. The sheet picking device according to claim 1 or 2, characterized in that: It also includes a fan (6) distributed on the same side as the brush wheel, with the air outlet of the fan (6) facing the sheet and corresponding to the bottom of the sucked sheet.

9. The sheet picking device according to claim 8, characterized in that: The air outlet of the fan is connected to an air guide cover (7), and the air outlet of the air guide cover (7) is designed as a long and narrow opening, which corresponds to the middle area of ​​the side edge of the sheet under the sucked sheet.

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