Electrode sheet coating processing feeding structure

Abstract

This utility model discloses an electrode sheet coating processing feeding structure. The positioning part is used to place and position the electrode sheet on the bracket. The linear guide rail and the first cylinder are used to adjust the horizontal and vertical positions of the bracket, respectively, so that the electrode sheet on the bracket moves between the two jaws of the two-finger rotating gripper. The two-finger rotating gripper picks up the electrode sheet so that, with the cooperation of the trolley and the slide rail, the electrode sheet is transported to the workstation where subsequent processing steps are carried out. Only manual placement of the electrode sheet on the bracket is required. If a robotic arm or other equipment is used to place the electrode sheet on the bracket and adjust its position, so that the positioning part completes the placement and positioning of the electrode sheet, manual operation can be eliminated. This is in line with the trend of automation in manufacturing. It can not only effectively solve the problem of high labor intensity and labor cost in the current electrode sheet coating processing where manual loading and preheating are carried out, but also improve the degree of mechanical automation, coating processing quality and safety.

Description

Technical Field

[0001] This utility model belongs to the technical field of electrode sheet production, specifically relating to an electrode sheet coating processing feeding structure. Background Technology

[0002] Electrode sheets are widely used in battery and heater manufacturing and water electrolysis processes. To improve the stability of battery charge and discharge cycles, the heat transfer performance of heaters, or the electrolysis efficiency, appropriate coatings need to be brushed onto the electrode sheets to create a coating with corresponding effects on the electrode sheet surface.

[0003] Now it is necessary to... Figure 1 The electrode sheet shown is coated, and two different coatings are applied to both sides of the electrode sheet in the thickness direction. The electrode sheet 1 includes an electrode body 12, which is in the shape of a long strip. One end of the electrode body extends vertically to form a transition section 13, and the free end of the transition section extends away from the other end of the electrode body and bends to form a mating section 14. The coating process of the electrode sheet includes loading, preheating, brushing, drying and unloading. Currently, loading and preheating are mostly done manually, that is, the electrode sheet is placed in the preheating area or fixed to the accompanying fixture by hand. This operation is not only labor-intensive and inefficient, but also poses a risk of workers being burned by the heating equipment used for preheating or being injured by operating the accompanying fixture. In addition, when the electrode sheet is placed in the preheating area by hand, the placement position is relatively random, which may affect the preheating effect and result in inconsistent coating quality. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a feeding structure for electrode sheet coating processing, which solves the technical problems of high labor intensity and labor-intensive process in the current electrode sheet coating processing where the feeding and preheating process is completed manually, and achieves the effect of improving the degree of mechanical automation, coating processing quality and safety.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An electrode sheet coating processing feeding structure includes a transport unit and a feeding unit. The transport unit includes a slide rail on the worktable. The feeding unit is located on one side of the slide rail. A trolley that can move along the slide rail is provided at the feeding unit on the slide rail. The trolley is provided with two-finger rotating grippers that extend toward the side where the feeding unit is located for gripping and flipping the electrode sheet.

[0007] The feeding unit includes a linear guide rail. One end of the linear guide rail is located directly below the two-finger rotating gripper, and the other end extends away from the slide rail. A first cylinder is vertically mounted on the slide of the linear guide rail. The piston rod of the first cylinder faces upward and has a bracket for placing the electrode sheet at its end. The linear guide rail and the first cylinder are used to adjust the position of the bracket in the horizontal and vertical directions, respectively, so that the two-finger rotating gripper can pick up the electrode sheet when the trolley is located at the feeding unit. The bracket has a positioning part to position and place the electrode sheet and allow the two sides of the electrode body in the width direction to be held by the two-finger rotating gripper.

[0008] Furthermore, the two grippers of the two-finger rotating gripper are rod-shaped and perpendicular to the slide rail. The opposing surfaces of the two grippers are raised to form a gripping part for gripping the electrode sheet. The end of the gripping part is V-shaped and matches the thickness of the electrode sheet in order to stably grip the electrode sheet.

[0009] The bracket is in the shape of a long strip, with its length direction perpendicular to the slide rail. A receiving groove is formed through the upper surface of the bracket along its length direction, and the width of the receiving groove matches the width of the electrode sheet. One end face of the receiving groove and the bracket along its length direction forms the positioning part. Both sides of the bracket along its width direction have a second clearance notch for the clamping part to extend into the receiving groove to clamp the electrode sheet. The linear guide rail is perpendicular to the slide rail.

[0010] Furthermore, the slide rail is connected end to end in a ring and includes four straight segments and an arc segment connected in sequence. The feeding unit is located outside any straight segment. The two grippers of the two-finger rotating gripper, the length direction of the bracket and the linear guide rail are all perpendicular to the straight segment. The end face of the receiving groove and the bracket away from the trolley in the length direction forms the positioning part.

[0011] Furthermore, the trolley has a cylindrical positioning part that is perpendicular to the straight section and extends laterally to the outside of the slide rail. An adjustment block is provided near the trolley at the feeding unit. The upper end of the adjustment block has an upward-facing V-shaped notch. The V-shaped notch is located directly below the cylindrical positioning part on the trolley. A second cylinder is vertically provided below the adjustment block. The piston rod of the second cylinder faces upward and is connected to the adjustment block. The second cylinder can drive the adjustment block to rise and position the cylindrical positioning part within the V-shaped notch.

[0012] Furthermore, the two-finger rotary gripper is pneumatically driven with its interface facing upwards. A lifting mechanism is provided on the inner side of the slide rail at the feeding unit. A quick connector is vertically installed on the lifting mechanism. The input end of the quick connector is connected to the air supply equipment, and the output end of the quick connector faces downwards and is located directly above the corresponding interface on the two-finger rotary gripper. The lifting mechanism can drive the quick connector to connect with the interface of the two-finger rotary gripper on the trolley so that the air supply equipment can drive the two-finger rotary gripper to move.

[0013] Furthermore, the inner side of the slide rail is provided with a ring-shaped belt concentric with the slide rail. Guide wheels are abutted at the four arc segments on the inner side of the belt. Each guide wheel is driven by a motor. The trolley is connected to the belt by bolts. The shank of the bolt passes through the belt outward and is threaded to the trolley. The inner side of the belt and the outer surface of the guide wheel both have teeth and mesh with each other. A clearance groove is opened on the outer surface of the guide wheel to make way for the head of the bolt.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In the electrode coating processing feeding structure of this utility model, the positioning part is used to place and position the electrode sheet on the bracket. The linear guide rail and the first cylinder are used to adjust the position of the bracket in the horizontal and vertical directions, respectively, so that the electrode sheet on the bracket moves between the two jaws of the two-finger rotating gripper. The two-finger rotating gripper picks up the electrode sheet so that, with the cooperation of the trolley and the slide rail, the electrode sheet is transported to the workstation where the subsequent processing steps are carried out. The whole process only requires manual placement of the electrode sheet on the bracket. If a robotic arm or other equipment is used to place the electrode sheet on the bracket and adjust its position, so that the positioning part completes the placement and positioning of the electrode sheet, manual operation can be eliminated, which is in line with the trend of automation in manufacturing. It can not only effectively solve the problem of high labor intensity and labor cost in the current electrode coating processing where manual loading and preheating are carried out, but also improve the degree of mechanical automation, coating processing quality and safety. Attached Figure Description

[0016] Figure 1 This is a perspective view of the electrode sheet described in the background art;

[0017] Figure 2 This is a schematic diagram of the feeding unit described in the embodiment;

[0018] Figure 3 This is a perspective view of the workbench and transport unit described in the embodiment;

[0019] Figure 4 This is a perspective view of the two-finger rotating gripper described in this embodiment;

[0020] Figure 5 This is a schematic diagram showing the state of the electrode sheet when the two-finger rotating gripper is holding it in this embodiment;

[0021] Figure 6 This is a perspective view of the bracket described in this embodiment;

[0022] Figure 7 This is a schematic diagram showing the state when the electrode sheet is positioned on the bracket as described in this embodiment;

[0023] The components include: electrode sheet 1, electrode body 12, transition section 13, mating section 14; worktable 21; slide rail 31, trolley 32, belt 33, guide wheel 34, clearance groove 35, cylindrical positioning part 36, adjusting block 37, second cylinder 38, motor 39, two-finger rotating gripper 4, power body 41, rotating table 42, gripper 43, clamping part 44; linear guide rail 51, first cylinder 52, bracket 53, receiving groove 54, second clearance notch 55; third cylinder 94, mounting plate 95, quick connector 96. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 utility model based on the specific circumstances.

[0026] Example:

[0027] Please see Figure 2 and Figure 3 An electrode sheet coating processing feeding structure includes a transport unit and a feeding unit. The transport unit includes a slide rail 31 on a worktable 21. The feeding unit is located on one side of the slide rail 31. A trolley 32 that can move along the slide rail 31 is provided on the slide rail 31 at the feeding unit. The trolley 32 is provided with a two-finger rotating gripper 4 (which is an existing product, i.e., a rotating finger cylinder or electric rotating finger with two grippers 43, as shown in Figure 4. The two-finger rotating gripper 4 includes a power body 41. One end of the power body 41 is rotatably connected to a rotating table 42. The rotating table 42 integrates two gripper seats that can be retracted and opened. The two grippers 43 can be designed and processed as needed and detachably connected to the gripper seats) for clamping and flipping the electrode sheet 1.

[0028] The feeding unit includes a linear guide rail 51. One end of the linear guide rail 51 is located directly below the two-finger rotating gripper 4, and the other end extends away from the slide rail 31. A first cylinder 52 is vertically provided on the slide of the linear guide rail 51. The piston rod of the first cylinder 52 faces upward and has a bracket 53 at its end for placing the electrode sheet 1. The linear guide rail 51 and the first cylinder 52 are used to adjust the position of the bracket 53 in the horizontal and vertical directions, respectively, so that when the trolley 32 is located at the feeding unit, the two-finger rotating gripper 4 can grip the electrode sheet 1. The bracket 53 has a positioning part to position and place the electrode sheet 1 and allow the two sides of the electrode sheet 1 in the width direction to be gripped by the two-finger rotating gripper 4.

[0029] In the electrode coating processing feeding structure of this utility model, the positioning part is used to place and position the electrode sheet 1 on the bracket 53. The linear guide rail 51 and the first cylinder 52 are used to adjust the position of the bracket 53 in the horizontal and vertical directions, respectively, so that the electrode sheet 1 on the bracket 53 moves between the two jaws 43 of the two-finger rotating gripper 4. The two-finger rotating gripper 4 grips the electrode sheet 1 so that, with the cooperation of the trolley 32 and the slide rail 31, the electrode sheet 1 is transported to the workstation where the subsequent processing steps are carried out. The whole process only requires manual placement of the electrode sheet on the bracket. If a robotic arm or other equipment is used to place the electrode sheet on the bracket and adjust its position, so that the positioning part completes the placement and positioning of the electrode sheet, manual operation can be eliminated, which is in line with the trend of automation in production and manufacturing. It can not only effectively solve the problem of high labor intensity and labor cost in the current electrode coating processing where manual loading and preheating are carried out, but also improve the degree of mechanical automation, coating processing quality and safety.

[0030] Please see Figures 4-7 In this embodiment, to achieve the placement and positioning of the electrode sheet 1 so that the two-finger rotating gripper 4 can accurately clamp the electrode sheet 1, the positioning part adopts the following structural form: the bracket 53 is in the shape of a long strip plate and is perpendicular to the slide rail 31. The upper surface of the bracket 53 is provided with a receiving groove 54 through the length direction. The width of the receiving groove 54 matches the width of the electrode sheet 1. The receiving groove 54 and one end face of the bracket 53 in the length direction form the positioning part. In addition, in order to cooperate with the positioning part and improve the stability of the two-finger rotating gripper 4 in clamping the electrode sheet 1, the two grippers 43 of the two-finger rotating gripper 4 are rod-shaped and perpendicular to the slide rail 31. The opposing surfaces of the two grippers 43 are raised to form a clamping part 44 for clamping the electrode sheet 1. The end of the clamping part 44 is V-shaped and matches the thickness of the electrode sheet 1 so as to stably clamp the electrode sheet 1. Correspondingly, both sides of the bracket 53 in the width direction have a second clearance notch 55 for the clamping part 44 to extend into the receiving groove 54 to clamp the electrode sheet 1.

[0031] Please see Figure 2 and Figure 3The slide rail 31 is connected end to end in a ring and includes four straight segments and an arc segment connected in sequence. The feeding unit is located outside any straight segment. The two grippers 43 of the two-finger rotating gripper 4, the length direction of the bracket 53 and the linear guide rail 51 are all perpendicular to the straight segment. The end face of the receiving groove 54 and the bracket 53 away from the trolley 32 in the length direction forms the positioning part. In this way, the two-finger rotating gripper 4 clamps the two sides of the electrode body 12 on the electrode sheet 1 in the width direction. By setting the above positioning part, the mating section 14 of the electrode sheet 1 placed on the bracket 53 is away from the two-finger rotating gripper 4. Compared with the mating section 14 of the electrode sheet 1 facing the two-finger rotating gripper 4, the required length of the two grippers 43 of the two-finger rotating gripper 4 is shorter, which is more conducive to the stability of clamping.

[0032] Please see Figure 2 and Figure 3 Since the feeding process places high demands on the position of the electrode sheet 1, in order to ensure that the trolley 32 is stably stopped at the feeding unit and in an accurate position, and to ensure that the feeding unit and the two-finger rotating gripper 4 on the trolley 32 are accurately engaged to achieve feeding, the trolley 32 and the slide rail 31 are provided with the following mutually cooperating positioning structure: The trolley 32 has a cylindrical positioning part 36 that is perpendicular to the straight line segment and extends laterally to the outside of the slide rail 31. An adjustment block 37 is provided near the trolley 32 at the feeding unit. The upper end of the adjustment block 37 has an upward-facing V-shaped notch (in practice, it can also be a semi-circular notch that matches the cylindrical positioning part 36). The V-shaped notch is located directly below the cylindrical positioning part 36 on the trolley 32. A second cylinder 38 is vertically provided below the adjustment block 37. The piston rod of the second cylinder 38 faces upward and is connected to the adjustment block 37. The second cylinder 38 can drive the adjustment block 37 to rise and position the cylindrical positioning part 36 within the V-shaped notch.

[0033] Please see Figure 2 and Figure 3 Since the two-finger rotating gripper 4 moves with the trolley 32, to solve the power supply and control of the two-finger rotating gripper 4, in this embodiment, a pneumatically driven two-finger rotating gripper 4 (i.e., a rotating finger cylinder) is used. The two grippers 43 of the two-finger rotating gripper 4 remain closed when not pressurized (clamping state, a function setting of the gripper itself). A lifting mechanism is provided on the inner side of the slide rail 31 at the feeding unit. A quick connector 96 is vertically provided on the lifting mechanism. The input end of the quick connector 96 faces upward and is connected to the air supply equipment (not shown in the figure). The output end of the quick connector 96 faces downward and is located directly above the corresponding interface on the two-finger rotating gripper 4. The lifting mechanism can drive the quick connector 96 to connect with the interface of the two-finger rotating gripper 4 on the trolley 32 so that the air supply equipment can drive the two-finger rotating gripper 4 to move. Figure 4 , Figure 5As can be seen, the power unit 41 has three interfaces. The single interface at the front is used to connect to the air supply and control the opening of the two grippers 43. The two adjacent interfaces at the rear are used to connect to the air supply and control the forward and reverse rotation of the rotary table 42 according to the different actual air intake interfaces. In this embodiment, the lifting mechanism is a third cylinder 94. The third cylinder 94 is fixed on the worktable 21. The piston rod of the third cylinder 94 is vertically oriented and connected to a horizontally set mounting plate 95. A quick connector 96 is located at one end of the mounting plate 95.

[0034] Please see Figure 3 In this embodiment, the trolley 32 is driven by the following structure: a belt 33 is provided on the inner side of the slide rail 31 in a ring shape and concentric with the slide rail 31. Guide wheels 34 are provided at the four arc segments on the inner side of the belt 33. Any guide wheel 34 is driven by a motor 39. The trolley 32 and the belt 33 are connected by bolts (not shown in the figure). The shank of the bolt passes through the belt 33 and is threadedly connected to the trolley 32. The inner side of the belt 33 and the outer surface of the guide wheel 34 are both toothed and meshing. A relief groove 35 is provided on the outer surface of the guide wheel 34 to allow space for the head of the bolt. In this way, while improving the transmission accuracy of the belt 33, interference between the belt 33 and the trolley 32 and the transmission of the belt 33 is avoided.

[0035] To facilitate understanding of the electrode sheet coating processing and feeding structure described in this utility model, its specific workflow is as follows:

[0036] 1) Material preparation: The slide table of the linear guide 51 is located at one end away from the slide rail 31. The first cylinder 52 on the slide table is in the retracted state, that is, the bracket 53 is a certain distance from the two-finger rotating gripper 4 in the horizontal direction, and the bracket 53 is lower than the height of the two grippers 43 of the two-finger rotating gripper 4.

[0037] 2) Electrode placement: Place the electrode 1 on the bracket 53 and position it using the positioning part. That is, the electrode 1 is located in the receiving groove 54, and the transition section 13 of the electrode 1 abuts against the side of the bracket 53 away from the trolley 32.

[0038] 3) Movement and clamping: The trolley 32 moves to the feeding unit and stops. The second cylinder 38 drives the adjusting block 37 to rise and position the cylindrical positioning part 36 in the V-shaped notch to achieve precise positioning of the trolley 32. The third cylinder 94 drives the quick connector 96 to fall and dock with the interface of the two-finger rotating gripper 4. The air supply device drives the two grippers 43 of the two-finger rotating gripper 4 to open through air pressure (this process can also be carried out in step 1 or step 2).

[0039] The slide table on the linear guide 51 slides towards the slide rail 31 until the bracket 53 is directly below the two jaws 43 of the two-finger rotating gripper 4, and the second clearance notch 55 on the bracket 53 is vertically aligned with the clamping part 44 on the gripper. Then the piston rod of the first cylinder 52 extends and drives the bracket 53 to move upward until the electrode plate 1 is located between the two jaws 43 of the two-finger rotating gripper 4, and the second clearance notch 55 on the bracket 53 is at the same height as the clamping part 44 on the gripper.

[0040] When the air supply equipment stops supplying air to the two-finger rotating gripper 4, the two grippers 43 of the two-finger rotating gripper 4 automatically retract and clamp the electrode sheet 1 after losing the air pressure drive.

[0041] In addition, to ensure the accuracy and stability of the horizontal displacement of the bracket 53 for clamping and to avoid relative sliding between the electrode plate 1 and the bracket 53 during the movement, which would cause placement and positioning failure, in this embodiment, the linear guide 51 adopts a combination of a servo motor and a ball screw, and the slide is the nut seat in the ball screw structure.

[0042] 4) Reset and transport: The piston rod of the first cylinder 52 retracts, causing the bracket 53 to descend. The side of the bracket 53 away from the trolley 32 disengages from the transition section 13 of the electrode sheet 1. The slide of the linear guide rail 51 moves outward and returns to its original position for the next loading. Then, the third cylinder 94 drives the quick connector 96 to rise and separate from the interface of the two-finger rotating gripper 4. The second cylinder 38 drives the adjusting block 37 to descend. The trolley 32 moves along the slide rail 31 to the subsequent station.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. A feeding structure for electrode sheet coating processing, characterized in that: It includes a transport unit and a loading unit. The transport unit includes a slide rail on the workbench. The loading unit is located on one side of the slide rail. A trolley that can move along the slide rail is provided at the loading unit on the slide rail. The trolley is provided with two-finger rotating grippers that extend toward the side where the loading unit is located for gripping and flipping the electrode sheet. The feeding unit includes a linear guide rail. One end of the linear guide rail is located directly below the two-finger rotating gripper, and the other end extends away from the slide rail. A first cylinder is vertically mounted on the slide of the linear guide rail. The piston rod of the first cylinder faces upward and has a bracket for placing the electrode sheet at its end. The linear guide rail and the first cylinder are used to adjust the position of the bracket in the horizontal and vertical directions, respectively, so that the two-finger rotating gripper can pick up the electrode sheet when the trolley is located at the feeding unit. The bracket has a positioning part to position and place the electrode sheet and allow the two sides of the electrode body in the width direction to be held by the two-finger rotating gripper.

2. The electrode sheet coating processing feeding structure according to claim 1, characterized in that: The two grippers of the two-finger rotating gripper are rod-shaped and perpendicular to the slide rail. The opposing surfaces of the two grippers are raised to form a gripping part for holding the electrode sheet. The end of the gripping part is V-shaped and matches the thickness of the electrode sheet to stably hold the electrode sheet. The bracket is in the shape of a long strip, with its length direction perpendicular to the slide rail. A receiving groove is formed through the upper surface of the bracket along its length direction, and the width of the receiving groove matches the width of the electrode sheet. One end face of the receiving groove and the bracket along its length direction forms the positioning part. Both sides of the bracket along its width direction have a second clearance notch for the clamping part to extend into the receiving groove to clamp the electrode sheet. The linear guide rail is perpendicular to the slide rail.

3. The electrode sheet coating processing feeding structure according to claim 2, characterized in that: The slide rail is connected end to end in a ring and includes four straight segments and an arc segment connected in sequence. The feeding unit is located outside any straight segment. The two grippers of the two-finger rotating gripper, the length direction of the bracket and the linear guide rail are all perpendicular to the straight segment. The end face of the receiving groove and the bracket away from the trolley in the length direction forms the positioning part.

4. The electrode sheet coating processing feeding structure according to claim 3, characterized in that: The trolley has a cylindrical positioning part that is perpendicular to the straight section and extends laterally to the outside of the slide rail. An adjustment block is provided near the trolley at the feeding unit. The upper end of the adjustment block has an upward-facing V-shaped notch. The V-shaped notch is located directly below the cylindrical positioning part on the trolley. A second cylinder is vertically located below the adjustment block. The piston rod of the second cylinder faces upward and is connected to the adjustment block. The second cylinder can drive the adjustment block to rise and position the cylindrical positioning part inside the V-shaped notch.

5. The electrode sheet coating processing feeding structure according to claim 3, characterized in that: The two-finger rotary gripper is pneumatically driven with its interface facing upwards. A lifting mechanism is located on the inner side of the slide rail at the feeding unit. A quick connector is vertically mounted on the lifting mechanism. The input end of the quick connector is connected to the air supply equipment, and the output end of the quick connector faces downwards and is located directly above the corresponding interface on the two-finger rotary gripper. The lifting mechanism can drive the quick connector to connect with the interface of the two-finger rotary gripper on the trolley so that the air supply equipment can drive the two-finger rotary gripper to move.

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