Feeding jig and feeding method for sheet-shaped workpieces

Abstract

The application discloses a kind of sheet workpiece's feeding jig, feeding method, feeding jig includes: angle rotary drive, fixed seat and vacuum suction nozzle, fixed seat is connected with the output end of angle rotary drive, angle rotary drive drives fixed seat to rotate around the axis of output end of angle rotary drive, vacuum suction nozzle is installed on fixed seat, vacuum suction nozzle can rotate synchronously with fixed seat, when vacuum suction nozzle is passed through rotation and makes suction direction present horizontal state, for suction sheet workpiece present vertical state, when vacuum suction nozzle is passed through rotation and makes suction direction present vertical state, sheet workpiece is converted from vertical state to required state for operation.By structural improvement, feeding jig can realize automatic turnover function, sheet workpiece is changed from vertical state to the state required for next process, facilitate the operation of subsequent process.

Description

Technical Field

[0001] This invention relates to the field of workpiece loading technology, specifically to a loading fixture and loading method for sheet-like workpieces. Background Technology

[0002] For loading sheet-like workpieces, they are neatly arranged horizontally in a pallet. However, horizontal placement results in a limited number of workpieces per pallet, affecting loading efficiency. Therefore, users have changed the arrangement to vertical placement, increasing the pallet's capacity several times over. However, since the workpieces are currently vertical, and the next process requires them to be horizontal or tilted, the current practice is to manually flip them from vertical to the required position. This is not only inefficient but also causes secondary contamination of the workpieces when handled manually. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0004] Therefore, the present invention provides a feeding fixture and feeding method for sheet-like workpieces, which can not only improve the feeding efficiency, but also prevent the sheet-like workpieces from being contaminated secondary.

[0005] A feeding fixture for sheet-like workpieces according to an embodiment of the present invention includes:

[0006] Angle rotation drive, and

[0007] A fixed base is connected to the output end of the angle rotation drive, and the angle rotation drive drives the fixed base to rotate around the axis of the output end of the angle rotation drive.

[0008] A vacuum nozzle is mounted on the fixed base and can rotate synchronously with the fixed base. When the vacuum nozzle rotates to make the suction direction horizontal, it is used to suck up sheet-like workpieces that are in a vertical position. When the vacuum nozzle rotates to make the suction direction vertical, the sheet-like workpiece changes from a vertical position to the position required for operation.

[0009] The beneficial effect of this invention is that by rotating the fixed base by 90° using the angle rotation drive, the vacuum nozzle changes from a vertical to a horizontal state, making it easier to pick up vertical sheet-like workpieces. The angle rotation drive then resets the fixed base, converting the vertical sheet-like workpiece into the state required for the next operation. Thus, through structural improvements, the feeding fixture can achieve an automatic flipping function, changing the sheet-like workpiece from a vertical state to the state required for the next process, facilitating subsequent operations.

[0010] According to one embodiment of the present invention, the feeding fixture further includes:

[0011] A workpiece support is provided, which is installed at the output end of the angle rotation drive and has a workpiece support position for supporting the sheet-like workpiece.

[0012] A first driving member connects the workpiece carrier and the fixed base, and drives the fixed base and the vacuum nozzle to move simultaneously relative to the workpiece carrier.

[0013] The workpiece bearing position is provided with a through hole corresponding to the vacuum nozzle, and the vacuum nozzle can pass through the through hole under the drive of the first driving member.

[0014] When the suction end of the vacuum nozzle protrudes beyond the workpiece bearing position, the sheet-like workpiece is in an adsorption state; when the suction end of the vacuum nozzle is recessed into the workpiece bearing position, the sheet-like workpiece is in a non-adsorption state and is supported on the workpiece bearing position.

[0015] According to one embodiment of the present invention, the workpiece bearing position is provided with a positioning groove corresponding to the shape of the sheet-like workpiece, and the workpiece bearing seat is provided with a second driving member, and the output end of the second driving member is equipped with a positioning push block for pushing the sheet-like workpiece into the positioning groove.

[0016] According to one embodiment of the present invention, the workpiece support includes: a first connecting plate, a second connecting plate and a third connecting plate, the first connecting plate being connected to the output end of the angle rotation drive, the second connecting plate and the third connecting plate being connected to the first connecting plate, the fixed end of the first drive being mounted on the third connecting plate, and the workpiece support being disposed on the second connecting plate.

[0017] According to one embodiment of the present invention, the workpiece support includes: a first connecting plate, a second connecting plate and a third connecting plate, the first connecting plate being connected to the output end of the angle rotation drive, the third connecting plate being connected to the first connecting plate, the second connecting plate being connected to the third connecting plate, the fixed end of the first drive being mounted on the third connecting plate, and the workpiece support being disposed on the second connecting plate.

[0018] According to one embodiment of the present invention, a first sensor is installed on the angle rotation drive, and a first baffle is provided at the output end of the angle rotation drive. The first baffle can rotate with the output end of the angle rotation drive. When the first baffle is inserted into the first sensor, the suction direction of the vacuum nozzle is vertical.

[0019] According to one embodiment of the present invention, a first limiting member is provided on one side of the angle rotation drive member, and when the workpiece carrier abuts against the first limiting member, the suction direction of the vacuum nozzle is vertical.

[0020] According to one embodiment of the present invention, a second limiting member is provided below the angle rotation drive member, and when the workpiece support abuts against the second limiting member, the suction direction of the vacuum nozzle is horizontal.

[0021] According to one embodiment of the present invention, the fixed end of the first driving member is mounted on the third connecting plate, the movable end of the first driving member is connected to the fixed seat, the fixed seat is located on the side of the second connecting plate close to the third connecting plate, and the moving direction of the movable end of the first driving member is parallel to the axis of the vacuum nozzle.

[0022] According to one embodiment of the present invention, the fixed base is connected to the movable end of the first driving member via a connecting block.

[0023] The present invention also provides a method for feeding sheet-like workpieces, comprising the following steps:

[0024] S1. The conveyor track moves the loading fixture to the loading area. At this time, the suction direction of the vacuum nozzle is vertical.

[0025] S2. Drive the vacuum nozzle to rotate 90° by the angle rotation drive to make the suction direction of the vacuum nozzle horizontal.

[0026] S3. After the vacuum nozzle picks up the sheet workpiece from the sheet workpiece feeder, the angle rotation drive drives the vacuum nozzle to rotate 90° in the opposite direction so that the suction direction of the vacuum nozzle returns to the vertical state.

[0027] S4. The conveyor track moves the loading fixture to the unloading area.

[0028] According to one embodiment of the present invention, in the sheet workpiece feeding machine, a robot arm is used to grip a vertically positioned sheet workpiece and move the sheet workpiece to a position close to the feeding area. When the vacuum nozzle sucks up the sheet workpiece and the negative pressure value reaches or exceeds a set value, the robot arm releases the sheet workpiece.

[0029] According to one embodiment of the present invention, the feeding method further includes:

[0030] When the loading fixture reaches the loading area, the first driving component drives the vacuum nozzle to move upward through the through hole of the workpiece bearing position, so that the suction end of the vacuum nozzle protrudes from the workpiece bearing position.

[0031] After the vacuum nozzle picks up the sheet-like workpiece and returns to a vertical position, the first driving member drives the vacuum nozzle to move downward, so that the suction end of the vacuum nozzle is recessed into the workpiece bearing position and the sheet-like workpiece is in the workpiece bearing position.

[0032] According to one embodiment of the present invention, when the sheet-like workpiece is located on the workpiece bearing position, the second driving member drives the positioning push block to extend and position the sheet-like workpiece.

[0033] According to one embodiment of the present invention, when the sheet-like workpiece is located within the workpiece bearing position, the second driving member drives the push block to extend and abut against one corner of the sheet-like workpiece.

[0034] According to one embodiment of the present invention, when the vacuum nozzle picks up the sheet-like workpiece and the negative pressure value reaches or exceeds a set value, the robot arm in the sheet-like workpiece loading machine releases the sheet-like workpiece. Attached Figure Description

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0036] Figure 1 This is a schematic diagram of the feeding fixture (vacuum nozzle in a vertical position) according to Embodiment 1 of the present invention.

[0037] Figure 2 This is a schematic diagram of the feeding fixture of Embodiment 1 of the present invention from another perspective.

[0038] Figure 3 This is a schematic diagram of the contact area A of the second limiting member in Embodiment 1 of the present invention.

[0039] Figure 4 This is a front view of the feeding fixture according to Embodiment 1 of the present invention.

[0040] Figure 5 This is a top view of the workpiece support base according to Embodiment 1 of the present invention.

[0041] Figure 6 This is a three-dimensional schematic diagram of the workpiece support base according to Embodiment 1 of the present invention.

[0042] Figure 7 This is a side view of the feeding fixture according to Embodiment 1 of the present invention.

[0043] Figure 8 This is a schematic diagram of the feeding fixture (vacuum nozzle is in a horizontal state) according to Embodiment 1 of the present invention.

[0044] Figure 9 This is a schematic diagram of the feeding fixture according to Embodiment 3 of the present invention.

[0045] Figure 10 This is a schematic diagram of the feeding fixture in Embodiment 5 of the present invention.

[0046] Figure 11 This is a side view of the feeding fixture of Embodiment 5 of the present invention.

[0047] In the figure: 1. Angle rotation drive; 2. Workpiece support; 3. First drive; 4. Vacuum nozzle; 20. Workpiece support position; 21. First connecting plate; 22. Second connecting plate; 23. Third connecting plate; 24. Through hole; 201. First stop bar; 202. Second stop bar; 203. Third stop bar; 5. Second drive; 51. Positioning push block; 6. First limiting component; 7. Second limiting component; 101. First sensing component; 102. First baffle; 511. Right angle push part; 8. Fixed base; 9. Second sensing component; 11. Base; 12. Second baffle; 13. Connecting block. Detailed Implementation

[0048] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0049] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0050] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0051] Example 1

[0052] like Figures 1 to 8As shown, the sheet workpiece loading fixture of this embodiment includes: an angle rotation drive 1, a fixed base 8, and a vacuum nozzle 4. The angle rotation drive 1 is mounted on the conveying track via a base 11. The fixed base 8 is connected to the output end of the angle rotation drive 1. The angle rotation drive 1 drives the fixed base 8 to rotate around the axis of the output end of the angle rotation drive 1. The vacuum nozzle 4 is mounted on the fixed base 8 and can rotate synchronously with the fixed base 8. When the vacuum nozzle 4 rotates to make the suction direction horizontal, it is used to pick up sheet workpieces in a vertical state. When the vacuum nozzle 4 rotates to make the suction direction vertical, the sheet workpiece changes from a vertical state to the state required for operation.

[0053] After the robotic arm of the sheet workpiece loading machine picks up a vertically positioned sheet workpiece from the tray and moves it to the designated location, the conveyor track moves the loading fixture to the loading area. Initially, the vacuum nozzle 4 is vertical, with its suction direction pointing directly upwards. Once the loading fixture reaches the loading area, the angle rotation drive 1 rotates the fixed base 8 by 90°, changing the suction direction of the vacuum nozzle 4 to a horizontal position. After the vacuum nozzle 4 picks up the sheet workpiece, the angle rotation drive 1 resets the fixed base 8, restoring the suction direction of the vacuum nozzle 4 to a vertical position. Thus, through structural improvements, the loading fixture can achieve an automatic flipping function, changing the sheet workpiece from a vertical to a horizontal position (i.e., the required position for operation), facilitating subsequent operations.

[0054] In this embodiment, the sheet-like workpiece is a circular lens.

[0055] In this embodiment, the loading fixture further includes a workpiece support 2 and a first driving member 3. The workpiece support 2 is installed at the output end of the angle rotation driving member 1, and the workpiece support 2 is provided with a workpiece bearing position 20 for bearing a sheet-like workpiece. The first driving member 3 connects the workpiece support 2 and the fixed base 8, and drives the fixed base 8 and the vacuum nozzle 4 to move simultaneously relative to the workpiece support 2. The workpiece bearing position 20 has a through hole 24 corresponding to the vacuum nozzle 4, and the vacuum nozzle 4 can pass through the through hole 24 under the drive of the first driving member 3. When the suction end of the vacuum nozzle 4 protrudes from the workpiece bearing position 20, the sheet-like workpiece is in an adsorption state. When the suction end of the vacuum nozzle 4 is recessed into the workpiece bearing position 20, the sheet-like workpiece is in a non-adsorption state and is supported on the workpiece bearing position 20.

[0056] In other words, the first driving component 3 can drive the vacuum nozzle 4 to reciprocate along the axial direction of the through hole 24, so that the suction end of the vacuum nozzle 4 protrudes from or is recessed into the workpiece bearing position 20. When the suction end of the vacuum nozzle 4 protrudes from the workpiece bearing position 20, it is easy to pick up the sheet-like workpiece. When the suction end of the vacuum nozzle 4 is recessed into the workpiece bearing position 20, it is easy to place the sheet-like workpiece on the workpiece bearing position 20. After the sheet-like workpiece falls onto the workpiece bearing position 20, the vacuum nozzle 4 can release its suction state, making it convenient for the next process to pick up the sheet-like workpiece.

[0057] In this embodiment, the workpiece support 2 includes a first connecting plate 21, a second connecting plate 22, and a third connecting plate 23. The first connecting plate 21 is connected to the output end of the angle rotation drive 1. The second connecting plate 22 is connected to the upper side of the first connecting plate 21 (for example, a hand-tightening screw can be used for quick disassembly). The third connecting plate 23 is fixedly connected to the first connecting plate 21, and the upper end of the third connecting plate 23 abuts against the second connecting plate 22. The fixed end of the first drive 3 is mounted on the third connecting plate 23, and the movable end of the first drive 3 is connected to the fixed base 8. The workpiece bearing position 20 is located on the second connecting plate 22. This design of the workpiece support 2 improves its own stability and meets the installation requirements of the drive component.

[0058] For example, the fixed base 8 is L-shaped. The vertical plate of the fixed base 8 is connected to the movable end of the first driving member 3. The fixed base 8 is located on the side of the second connecting plate 22 near the third connecting plate 23. The moving direction of the movable end of the first driving member 3 is parallel to the axis of the vacuum nozzle 4. The fixed base 8 is connected to the movable end of the first driving member 3 through the connecting block 13. The horizontal plate of the fixed base 8 is used to install the vacuum nozzle 4. When the vacuum nozzle 4 moves towards the workpiece bearing position 20, the horizontal plate can also play a limiting role (when the horizontal plate abuts against the second connecting plate 22, the vacuum nozzle 4 cannot continue to move upward).

[0059] The workpiece bearing position 20 is recessed with a positioning groove corresponding to the shape of the sheet-like workpiece. In this embodiment, the workpiece bearing position 20 has a first stop bar 201, a second stop bar 202, and a third stop bar 203, which are respectively located at three positions of the sheet-like workpiece to form the positioning groove. The workpiece bearing seat 2 is provided with a second driving member 5, and the output end of the second driving member 5 is equipped with a positioning push block 51 for pushing the sheet-like workpiece into the positioning groove. It should be noted that when the vacuum nozzle 4 picks up the sheet-like workpiece from the robot, it may not be able to accurately pick up the center of the sheet-like workpiece, and sometimes it may be slightly off-center. After the sheet-like workpiece is placed in the workpiece bearing position 20, the positioning push block 51 is extended and pressed against the sheet-like workpiece by the second driving member 5, which can realize the position correction and positioning of the sheet-like workpiece. In this embodiment, the second driving member 5 is located on one side of the workpiece bearing position 20 (this side is not provided with a stop bar), and the center line of the second driving member 5 is perpendicular to the first stop bar 201, that is, the positioning push block 51 is arranged opposite to the first stop bar 201. The first stop bar 201 and the positioning push block 51 can abut against the opposite sides of the sheet-like workpiece. The first stop bar 201 is also provided with an arc-shaped recess, which can better fit with the circular lens. The positioning push block 51 is a cuboid.

[0060] In this embodiment, a first limiting member 6 (for example, fixed to the base 11) is provided on one side of the angle rotation drive 1. When the workpiece carrier 2 abuts against the first limiting member 6, the suction direction of the vacuum nozzle 4 is vertical. A second limiting member 7 (for example, fixed to the base 11) is provided below the angle rotation drive 1. When the workpiece carrier 2 abuts against the second limiting member 7, the suction direction of the vacuum nozzle 4 is horizontal. For example, if the robot is located on the left side of the loading fixture, then the first limiting member 6 is located on the right side of the angle rotation drive 1, so that the workpiece carrier 2 can only rotate to the left. The first limiting member 6 is, for example, a limiting block. One end of the first limiting member 6 is fixedly connected to the angle rotation drive 1, and the other end extends to the side of the first connecting plate 21 and abuts against the side of the first connecting plate 21. When the workpiece carrier 2 rotates 90° to the left, the left side of the first connecting plate 21 abuts against the contact area A on the second limiting member 7 to prevent the workpiece carrier 2 from rotating beyond the set angle.

[0061] In this embodiment, a first sensor 101 is mounted on the angle rotation drive 1, and a first baffle 102 is provided at the output end of the angle rotation drive 1. The first baffle 102 can rotate with the output end of the angle rotation drive 1. When the first baffle 102 is inserted into the first sensor 101, the suction direction of the vacuum nozzle 4 is vertical. The vacuum nozzle 4 is connected to the vacuum generator.

[0062] In this embodiment, both the loading and unloading areas of the conveyor track are equipped with second sensors 9, and a second baffle 12 is installed on the base 11. Through the cooperation of the second baffle 12 and the two second sensors 9, the position of the loading fixture—whether it is in the loading or unloading area—can be determined, facilitating control of the loading fixture's related operations. The loading area is the region of the conveyor track near the sheet workpiece loading machine, and the unloading area is the region of the conveyor track near the next process operating mechanism.

[0063] Example 2

[0064] This embodiment provides a feeding method for the feeding fixture of Embodiment 1, including the following steps:

[0065] S1. The conveyor track moves the loading fixture to the loading area. At this time, the suction direction of the vacuum nozzle 4 is vertical.

[0066] S2. The vacuum nozzle 4 is rotated 90° by the angle rotation drive 1 so that the suction direction of the vacuum nozzle 4 is horizontal.

[0067] S3. After the vacuum nozzle 4 picks up the sheet workpiece from the sheet workpiece feeder, the angle rotation drive 1 drives the vacuum nozzle 4 to rotate 90° in the opposite direction so that the suction direction of the vacuum nozzle 4 returns to the vertical state.

[0068] S4. The conveyor track moves the loading fixture to the unloading area.

[0069] Before step S1, the robotic arm inside the sheet workpiece loading machine has already gripped the vertically positioned sheet workpiece and moved it to the designated position. In this embodiment, when the workpiece support 2 is in its initial state, the vacuum nozzle 4 is in a vertical state, and at this time, the suction direction of the vacuum nozzle 4 is directly upward. The first driving member 3 drives the vacuum nozzle 4 to move directly upward so that the suction end extends out of the workpiece support position 20. When the horizontal plate of the fixed base 8 abuts against the second connecting plate 22, the vacuum nozzle 4 stops moving upward.

[0070] Then, the angle rotation drive 1 rotates the workpiece carrier 2 by 90°. For example, if the robot arm is located on the left side of the loading fixture, the workpiece carrier 2 rotates 90° to the left. After rotation, the vacuum nozzle 4 becomes horizontal, with the nozzle facing left. The robot arm can fine-tune the position of the sheet workpiece so that the vacuum nozzle 4 can smoothly pick up the sheet workpiece. During suction, the vacuum generator causes the vacuum nozzle 4 to generate negative pressure to hold the sheet workpiece. When the negative pressure value of the nozzle reaches a set value (e.g., -80 kPa) or higher, the robot arm in the sheet workpiece loading machine releases the sheet workpiece to prevent the sheet workpiece from falling off before the suction force is in place.

[0071] After the vacuum nozzle 4 picks up the sheet-like workpiece, the conveyor track moves the loading fixture to the unloading area. Then, the angle rotation drive 1 restores the workpiece carrier 2 to its initial state, at which point the sheet-like workpiece is flipped from a vertical position to a horizontal position. Alternatively, the workpiece carrier 2 can be restored to its initial position before the loading fixture reaches the unloading area. Then, the first drive 3 moves the vacuum nozzle 4 directly downwards. When the vacuum nozzle 4 retracts into the through hole 24, the sheet-like workpiece falls onto the workpiece carrier position 20. At this point, the vacuum generator controls the vacuum nozzle 4 to release the vacuum suction state. Then, the second drive 5 extends the positioning push block 51 to abut one side of the sheet-like workpiece, positioning it for subsequent equipment to pick it up.

[0072] Example 3

[0073] like Figure 9 As shown, the difference between this embodiment and Embodiment 1 is that the sheet-like workpiece is a square reflector, and the angle formed by the intersection of the center line of the second driving member 5 and the first stop 201 is an acute angle. A right-angled push part 511 is located on the positioning push block 51, at one corner of the square reflector. When the square reflector falls into the workpiece bearing position 20, the second driving member 5 drives the positioning push block 51 to extend, and the right-angled push part 511 contacts one corner of the square reflector, pushing the square reflector towards the second stop 202. Finally, the first side of the square reflector contacts the first stop 201, the second side contacts the second stop 202, and the corner between the third and fourth sides contacts the right-angled push part 511, thus positioning the square reflector.

[0074] Example 4

[0075] This embodiment provides a feeding method for the feeding fixture of Embodiment 3. The difference between this embodiment and Embodiment 2 is that: after the sheet workpiece is located in the workpiece bearing position 20, the second driving member 5 drives the positioning push block 51 to extend and abut against one corner of the sheet workpiece.

[0076] Example 5

[0077] like Figures 10 to 11 As shown, the difference between this embodiment and Embodiment 1 is that, in the initial state, the second connecting plate 22 of the workpiece support 2 is tilted, and the suction direction of the vacuum nozzle 4 is directed diagonally upward. In this embodiment, the second connecting plate 22 and the third connecting plate 23 are fixedly connected, and the plane where the second connecting plate 22 is located forms an acute angle with the plane where the first connecting plate 21 is located. The workpiece support position 20 is only provided with the first stop bar 201 and the second stop bar 202, and there are two vacuum nozzles 4 and two through holes 24. Since the workpiece support position 20 is tilted, using multiple vacuum nozzles 4 provides better stability.

[0078] In this embodiment, the sheet-like workpiece is a square reflector. The angle formed by the intersection of the centerline of the second driving member 5 and the first stop bar 201 is an acute angle. A right-angled push part 511 is located on the positioning push block 51, at one corner of the square reflector. When the square reflector falls into the workpiece bearing position 20, the second driving member 5 drives the positioning push block 51 to extend, and the right-angled push part 511 contacts one corner of the square reflector, pushing the square reflector towards the second stop bar 202. Finally, the first side of the square reflector contacts the first stop bar 201, the second side contacts the second stop bar 202, and the corner between the third and fourth sides contacts the right-angled push part 511, thus positioning the square reflector.

[0079] Example 6

[0080] This embodiment provides a feeding method for the feeding fixture of Embodiment 5. The difference between this embodiment and Embodiment 2 is that, in this embodiment, when the workpiece carrier 2 is in its initial state, the vacuum nozzle 4 is tilted in the vertical direction, and the suction direction of the vacuum nozzle 4 is facing obliquely upward. When the angle rotation drive 1 rotates the workpiece carrier 2 by 90°, the vacuum nozzle 4 becomes horizontal, but the suction direction of the vacuum nozzle 4 is tilted relative to the plane where the first connecting plate 21 is located. The robot can adjust the position of the sheet-like workpiece to adapt to the suction position of the vacuum nozzle 4.

[0081] After the vacuum nozzle 4 picks up the sheet-like workpiece, the conveyor track moves the loading fixture to the unloading area. Then, the angle rotation drive 1 restores the workpiece carrier 2 to its initial state. At this time, the sheet-like workpiece is flipped into an inclined state (inclined relative to the horizontal plane). Then, the first drive 3 drives the vacuum nozzle 4 to move obliquely downward. When the vacuum nozzle 4 retracts into the through hole 24, the sheet-like workpiece falls onto the workpiece carrier 20. At this time, the vacuum generator controls the vacuum nozzle 4 to release the vacuum adsorption state, and the sheet-like workpiece can rest against the second stop bar 202 due to gravity. Then, the second drive 5 drives the positioning push block 51 to extend and abut against one corner of the sheet-like workpiece to position the sheet-like workpiece, making it easier for subsequent operating equipment to pick up the sheet-like workpiece.

[0082] In summary, the sheet workpiece loading fixture and method of the present invention, through structural improvements, can flip the sheet workpiece from a vertical state to the state required for the next process (horizontal or inclined state) during the loading process. This improves loading efficiency and prevents secondary contamination of the sheet workpiece. The present invention reduces process steps, saves time, and increases production efficiency. Through the cooperation of the angle rotation drive 1, workpiece support 2, first drive 3, second drive 5, and vacuum nozzle 4, the state adjustment and positioning of the sheet workpiece can be achieved, facilitating subsequent processes.

[0083] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined by the scope of the claims.

Claims

1. A feeding fixture for sheet-like workpieces, characterized in that, include: Angle rotation drive (1), and A fixed base (8) is connected to the output end of the angle rotation drive (1), and the angle rotation drive (1) drives the fixed base (8) to rotate around the axis of the output end of the angle rotation drive (1). Vacuum nozzle (4) is mounted on the fixed base (8). The vacuum nozzle (4) can rotate synchronously with the fixed base (8). When the vacuum nozzle (4) rotates to make the suction direction horizontal, it is used to suck up sheet-like workpieces in a vertical state. When the vacuum nozzle (4) rotates to make the suction direction vertical, the sheet-like workpiece changes from a vertical state to the state required for operation. Workpiece carrier (2), the workpiece carrier (2) is installed at the output end of the angle rotation drive (1), and the workpiece carrier (2) is provided with a workpiece carrier position (20) for carrying the sheet-shaped workpiece. The first driving member (3) connects the workpiece carrier (2) and the fixed seat (8) and drives the fixed seat (8) and the vacuum nozzle (4) to move simultaneously relative to the workpiece carrier (2); The workpiece bearing position (20) is provided with a through hole (24) corresponding to the vacuum nozzle (4), and the vacuum nozzle (4) can pass through the through hole (24) under the drive of the first driving member (3). When the suction end of the vacuum nozzle (4) protrudes from the workpiece bearing position (20), the sheet workpiece is in an adsorption state; when the suction end of the vacuum nozzle (4) is recessed into the workpiece bearing position (20), the sheet workpiece is in a non-adsorption state and is supported on the workpiece bearing position (20). The workpiece bearing position (20) is recessed with a positioning groove corresponding to the shape of the sheet workpiece. The workpiece bearing seat (2) is provided with a second driving member (5). The output end of the second driving member (5) is equipped with a positioning push block (51) for pushing the sheet workpiece into the positioning groove.

2. The feeding fixture for sheet-like workpieces as described in claim 1, characterized in that, The workpiece support (2) includes a first connecting plate (21), a second connecting plate (22) and a third connecting plate (23). The first connecting plate (21) is connected to the output end of the angle rotation drive (1). The second connecting plate (22) and the third connecting plate (23) are both connected to the first connecting plate (21). The fixed end of the first drive (3) is installed on the third connecting plate (23). The workpiece support position (20) is located on the second connecting plate (22).

3. The feeding fixture for sheet-like workpieces as described in claim 1, characterized in that, The workpiece support (2) includes a first connecting plate (21), a second connecting plate (22) and a third connecting plate (23). The first connecting plate (21) is connected to the output end of the angle rotation drive (1). The third connecting plate (23) is connected to the first connecting plate (21). The second connecting plate (22) is connected to the third connecting plate (23). The fixed end of the first drive (3) is installed on the third connecting plate (23). The workpiece support position (20) is located on the second connecting plate (22).

4. The feeding fixture for sheet-like workpieces as described in claim 1, characterized in that, The angle rotation drive (1) is equipped with a first sensor (101), and the output end of the angle rotation drive (1) is provided with a first baffle (102). The first baffle (102) can rotate with the output end of the angle rotation drive (1). When the first baffle (102) is inserted into the first sensor (101), the suction direction of the vacuum nozzle (4) is vertical.

5. The feeding fixture for sheet-like workpieces as described in claim 1, characterized in that, The angle rotation drive (1) is provided with a first limiting member (6) on one side. When the workpiece carrier (2) abuts against the first limiting member (6), the suction direction of the vacuum nozzle (4) is vertical.

6. The feeding fixture for sheet-like workpieces as described in claim 1, characterized in that, The angle rotation drive (1) is provided with a second limiting member (7) below it. When the workpiece carrier (2) abuts against the second limiting member (7), the suction direction of the vacuum nozzle (4) is horizontal.

7. The feeding fixture for sheet-like workpieces as described in claim 2 or 3, characterized in that, The fixed end of the first driving member (3) is mounted on the third connecting plate (23), and the movable end of the first driving member (3) is connected to the fixed seat (8). The fixed seat (8) is located on the side of the second connecting plate (22) close to the third connecting plate (23). The moving direction of the movable end of the first driving member (3) is parallel to the axis of the vacuum nozzle (4).

8. The feeding fixture for sheet-like workpieces as described in claim 7, characterized in that, The fixed base (8) is connected to the movable end of the first driving member (3) via a connecting block (13).

9. A method for feeding a sheet-like workpiece using a feeding fixture for sheet-like workpieces as described in any one of claims 1 to 8, characterized in that, Includes the following steps: S1. The conveyor track moves the loading fixture to the loading area. At this time, the suction direction of the vacuum nozzle (4) is vertical. S2. Drive the vacuum nozzle (4) to rotate 90° by the angle rotation drive (1) so that the suction direction of the vacuum nozzle (4) is horizontal. S3. After the vacuum nozzle (4) picks up the sheet workpiece from the sheet workpiece feeder, the angle rotation drive (1) drives the vacuum nozzle (4) to rotate 90° in the opposite direction so that the suction direction of the vacuum nozzle (4) returns to the vertical state. S4. The conveyor track moves the loading fixture to the unloading area.

10. The method for feeding sheet-like workpieces as described in claim 9, characterized in that, Inside the sheet workpiece feeder, a robotic arm is used to grip a vertical sheet workpiece and move it to a position close to the feeding area. When the vacuum nozzle (4) sucks up the sheet workpiece and the negative pressure value reaches or exceeds the set value, the robotic arm releases the sheet workpiece.

11. The method for feeding sheet-like workpieces as described in claim 9, characterized in that, The feeding method also includes: When the loading fixture reaches the loading area, the first driving member (3) drives the vacuum nozzle (4) to move upward through the through hole (24) of the workpiece bearing position (20), so that the suction end of the vacuum nozzle (4) protrudes from the workpiece bearing position (20). When the vacuum nozzle (4) picks up the sheet workpiece and returns to a vertical state, the first driving member (3) drives the vacuum nozzle (4) to move downward so that the suction end of the vacuum nozzle (4) is recessed into the workpiece bearing position (20) and the sheet workpiece is on the workpiece bearing position (20).

12. The method for feeding sheet-like workpieces as described in claim 11, characterized in that, When the sheet-like workpiece is located on the workpiece bearing position (20), the second driving member (5) drives the positioning push block (51) to extend and position the sheet-like workpiece.

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