Feeding device for sheets

Abstract

The feeding device comprises a machine frame, a workbench is further arranged on the machine frame in a hinged mode, a stock bin is arranged on the workbench, an inclination adjusting module is further arranged on the machine frame, and the workbench is connected with the inclination adjusting module so as to control the inclination angle of the workbench; the feeding device further comprises an ionic wind module and a grabbing module, the ionic wind module is communicated with the stock bin so as to blow ionic wind to a to-be-transferred sheet stored in the stock bin, the grabbing module is arranged on the workbench, and a vibration module is further arranged on the workbench. Compared with the prior art, the Van der Waals force between the sheets can be effectively damaged through the comprehensive action of inclined arrangement, high-frequency low-amplitude vibration and ionic wind, and therefore the sheets can be rapidly and effectively separated.

Description

Technical Field

[0001] The present application relates to the technical field of material conveying equipment, and in particular to a feeding device for thin sheets. Background Art

[0002] The electrolyte material used in SOFC stacks is oxide ceramic with a thickness of 0.1mm. Under normal conditions, multiple oxide ceramic sheets are generally stacked and placed. When the stack is assembled automatically, they are grabbed one by one by a material picking device. However, since the electrolyte sheets are relatively thin, static electricity is easily generated during transportation and placement, resulting in adhesion and inability to be effectively separated. As a result, the electrolyte sheets are often offset during the grabbing process, causing the electrolyte sheets to break or be misplaced. Summary of the invention

[0003] The main purpose of the present application is to provide a feeding device for thin slices, aiming to solve the defect that the thin slices cannot be separated stably in the prior art.

[0004] This application achieves the above objectives through the following technical solutions: A feeding device for thin sheets, comprising a frame; A workbench, the workbench is hingedly connected to the frame; the workbench is provided with a silo for placing the slices to be transferred; A tilt adjustment module, wherein the tilt adjustment module is arranged on the frame, and the workbench is connected to the tilt adjustment module to control the tilt angle of the workbench; An ion wind module, the ion wind module is connected to the silo to blow ion wind toward the sheets to be transferred stored in the silo; A grabbing module, the grabbing module is connected to the workbench; A vibration module is connected to the workbench.

[0005] Optionally, the loading device also includes a guide rod, one end of which is connected to the workbench along the axis of the guide rod, and the other end of the guide rod is provided with a universal ball. A rotating seat is also provided on the frame, and the universal ball is rotatably connected to the rotating seat.

[0006] Optionally, the inclination adjustment module includes a first telescopic module and a second telescopic module disposed on the frame, and the first telescopic module and the second telescopic module are respectively against the workbench.

[0007] Optionally, a guide sleeve is further provided on the frame, a guide column is further provided on the workbench, a limiting surface with a conical structure is provided on the guide column, and a limiting hole that fits with the limiting surface is provided on the guide sleeve.

[0008] Optionally, an ion wind transport cavity is provided on the material bin, and a plurality of ion wind nozzles are also provided on the material bin along the axial direction of the ion wind transport cavity, and each of the ion wind nozzles is respectively connected to the ion wind transport cavity.

[0009] Optionally, the ion wind module includes an ion wind generator, and the ion wind generator is connected to the ion wind delivery chamber through an ion wind delivery tube.

[0010] Optionally, a fiber optic sensor is also provided on the silo.

[0011] Optionally, the loading device further comprises a lifting block and a lifting cylinder connected to each other, wherein the lifting cylinder is connected to the workbench, and the lifting block is located in the silo to lift the slice to be transferred.

[0012] Optionally, the grabbing module includes a mounting frame, the mounting frame is connected to the workbench, and a flipping drive and a grabbing suction cup are also provided on the mounting frame, and the grabbing suction cup is connected to the flipping drive.

[0013] Optionally, the vibration module includes a high-frequency vibrator, which is connected to the workbench.

[0014] Compared with the prior art, this application has the following beneficial effects: The present application includes a frame, a workbench is hingedly provided on the frame, a silo is provided on the workbench, a slope adjustment module is provided on the frame, the workbench is connected to the slope adjustment module to control the inclination angle of the workbench; the feeding device also includes an ion wind module and a grabbing module, wherein the ion wind module is connected to the silo to blow ion wind to the sheet to be transferred stored in the silo, the grabbing module is provided on the workbench, and a vibration module is also provided on the workbench; When in use, the materials to be transferred are stacked and placed in the silo, and then the workbench is controlled to tilt around the hinge point through the inclination adjustment module, and the vibration module is started at the same time. During the tilting process, all the materials to be transferred will slide slightly to the lowest point after tilting, and the molecular contact between the sheets can be effectively destroyed through high-frequency and low-amplitude vibration. The collision between the side of the sheet and the inner wall of the silo can realize the arrangement of the materials and ensure that the materials are in the correct grabbing position; when the tilt angle is adjusted to the right position, the vibration module is turned off; Then the grabbing module completes the adsorption and grabbing operation of the top sheet, and then the vibration module is turned on again, and the ion wind module is started at the same time, combining the high-frequency vibration and the ion wind blown by the ion wind module to eliminate the static electricity on the surface of the sheet, thereby achieving complete separation of the top sheet; Van der Waals force is a weak interaction force between molecules, which is mainly manifested in three aspects: between dipoles and dipoles, between induced dipoles and dipoles, and dispersion force. In the thin film stacking scenario described in the present application, the main reason for the mutual adhesion of oxide ceramic thin films during the stacking process is the van der Waals force, that is, when the surface of the thin film is smooth and in close contact (especially ultra-thin materials with a thickness of ≤0.2mm), the molecular spacing between the contact surfaces is extremely small (usually nanometers), and the dispersion force will be significantly enhanced, resulting in the adhesion of the thin films and being difficult to separate. In the technical solution described in the present application, the workbench will be tilted first. During the tilting process, the adhesion between the thin films will be destroyed due to the sliding of the thin films. At the same time, high-frequency vibration directly acts on the silo and the stacked thin films. The tilted placement and the vibration in the normal direction generate a horizontal component shear force, which causes a small sliding friction between the thin films and destroys the adsorption balance of the molecular contact surface. Secondly, since the present application uses high-frequency and low-amplitude vibration, the vibration frequency is set to 100-200 Hz, which is much higher than the operating frequency of manual separation (usually <10 Hz). The high-frequency vibration generates continuous dynamic stress waves on the contact surface of the thin sheet. The amplitude is controlled at 0.1-0.5mm, which can not only avoid the large displacement of the sheet and cause dislocation, but also accumulate energy through tiny vibrations, thereby intensifying the thermal motion of molecules on the surface of the sheet and weakening the intermolecular bonding energy. The vibration of high-frequency vibration can be converted into thermal energy, and the local temperature rise will further weaken the van der Waals force. In each vibration cycle, the thin film produces micrometer-level displacement in the vertical direction (for example, when the amplitude is 0.3 mm, the instantaneous separation distance is about tens of micrometers). When the separation distance exceeds the effective range of van der Waals force (usually <10 nm), the intermolecular attraction is cut off, thereby weakening the van der Waals force. That is, the present application destroys the van der Waals force between the slices as much as possible from the source by directly acting on the high-frequency low-amplitude vibration of the silo and superimposing the tilted setting of the worktable, thereby achieving effective separation of the slices and being able to maintain the separation state of the slices for a long time.

[0015] Finally, in the prior art, after the thin sheets are loaded, they need to be precisely positioned before they can be grabbed to the assembly position for assembly. However, due to the thin / brittle characteristics of the electrolyte sheets, the general positioning structure can easily crush and crack the electrolyte sheets, especially when only a few sheets are left. The present structure is positioned by tilting, so the present application does not need to add a separate precise positioning structure to achieve precise positioning of the electrolyte sheets, and will not damage the electrolyte sheets. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a feeding device for a sheet provided in Embodiment 1 of the present application; Figure 2An exploded view of a feeding device for a sheet provided in Embodiment 1 of the present application; Figure 3 A cross-sectional view of a feeding device for a sheet provided in Embodiment 1 of the present application; Figure 4 A cross-sectional view of a feeding device for sheets provided in Embodiment 1 of the present application along a connecting line between a first telescopic module and a guide sleeve; Figure 5 It is a cross-sectional view along the length direction of the silo; Figure markings: 1-frame, 2-workbench, 3-silo, 4-guide rod, 5-universal ball, 6-rotating seat, 7-first telescopic module, 8-second telescopic module, 9-guide sleeve, 10-guide column, 11-limiting surface, 12-limiting hole, 13-ion wind conveying chamber, 14-ion wind nozzle, 15-ion wind generator, 16-optical fiber sensor, 17-lifting block, 18-lifting cylinder, 19-mounting frame, 20-flip drive, 21-grabbing suction cup, 22-high frequency vibrator.

[0017] The purpose, features and advantages of this application will be further described in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] Implementation Method 1 Reference Figures 1 to 5 , this embodiment is an optional embodiment of the present application, which discloses a feeding device for thin sheets, including a frame 1 and a workbench 2, wherein the frame 1 and the workbench 2 are both long strip-shaped flat plates; A guide rod 4 is connected to one corner of the workbench 2, and a universal ball 5 is also provided at the free end of the guide rod 4. A rotating seat 6 is also provided on the frame 1, and the rotating seat 6 is rotatably connected to the universal ball 5; The frame 1 is also provided with an inclination adjustment module, which includes a first telescopic module 7 and a second telescopic module 8. The telescopic ends of the first telescopic module 7 and the second telescopic module 8 are both provided with contact balls, and the outer surface of the contact ball is in contact with the bottom surface of the workbench 2. It should be noted that the first telescopic module 7 and the second telescopic module 8 are also arranged at a corner of the workbench 2, and the connecting line between the first telescopic module 7 and the second telescopic module 8 is the diagonal line of the workbench 2; Specifically, the point where the guide rod 4 is connected to the workbench 2 is taken as the starting point, and the workbench 2 is rotated clockwise or counterclockwise to name the corners of the workbench 2 as point A, point B, point C and point D, respectively, wherein the guide rod 4 is connected to point A, and the first telescopic module 7 and the second telescopic module 8 are respectively arranged at point B and point D; At the same time, a guide column 10 is also provided at the last corner of the workbench 2, and a guide sleeve 9 is provided on the frame 1. In the vertical direction, the guide column 10 is directly opposite to the guide sleeve 9, and a limiting surface 11 with a conical structure is provided on the guide column 10, and a limiting hole 12 with a conical structure is provided on the guide sleeve 9. When the workbench 2 is parallel to the frame 1, the guide column 10 is inserted into the guide sleeve 9, and the limiting surface 11 is completely fitted with the inner wall of the limiting hole 12; The first telescopic module 7 and the second telescopic module 8 are linear drive devices such as oil cylinders, air cylinders or telescopic motors; In the above structure, the workbench 2 can be adjusted by controlling the telescopic lengths of the first telescopic module 7 and the second telescopic module 8 in combination with the cooperation of the universal ball 5 and the rotating seat 6; Compared with the traditional hinge articulation method, the present application not only has a larger adjustable angle, thereby expanding the adjustable range of the workbench 2 as much as possible; at the same time, the present application is point-limited, and the workbench 2 is always rotated and adjusted around the rotation point, so the workbench 2 can be arbitrarily adjusted within the range of a quarter of a sphere with the rotation point as the center of the sphere, that is, the inclination angles of the four corner positions of the workbench 2 can be the same or different, which further improves the flexibility of the adjustment of the workbench 2.

[0023] At the same time, the design of the guide sleeve 9 and the guide column 10 can quickly and accurately locate the terminal position of the workbench 2 for recovery, thereby ensuring the accuracy of the operation of the workbench 2.

[0024] Furthermore, an angle sensor may be provided on the workbench 2 to detect whether the inclination angle of the workbench 2 is appropriate; at the same time, the top surface position of the adjusted workbench 2 may be determined based on the three-point coplanarity principle by detecting the telescopic length of the oil cylinder or the air cylinder, and the inclination angle and inclination direction may be quickly calculated in combination with the initial position; Furthermore, a silo 3 is provided on the top surface of the workbench 2. The silo 3 includes a silo body. The silo body is in an elongated shape as a whole, and the middle part is a hollow structure. The cross section of the silo body is a U-shaped structure, and along the vertical direction, the top and bottom of the silo body are both opened. A connecting plate is also provided on the workbench 2, and the connecting plate is connected to the silo 3; baffles are provided on both sides of the side opening end of the silo 3, and the baffles are connected to the connecting plate through butterfly bolts; An ion wind transport chamber 13 and a plurality of ion wind nozzles 14 are also provided in the chamber along the length direction of the chamber, and the axis of each ion wind nozzle 14 is perpendicular to the axis of the ion wind transport chamber 13 and is evenly arranged along the axis direction of the ion wind transport chamber 13; The outlet of each of the ion wind nozzles 14 faces the silo 3 to ensure that the ion wind enters the silo 3; the feeding device also includes an ion wind module, and the ion wind module includes an ion wind generator 15, and the ion wind generator 15 is connected to the ion wind conveying chamber 13 through an ion wind conveying pipe; Furthermore, an optical fiber sensor 16 is provided on the silo body, and the detection end of the optical fiber sensor 16 is facing the area on the top of the silo 3 for placing the sheets to be transferred, so as to detect whether the position of the top sheet is within the specified transfer area, thereby ensuring that the sheet is in the correct position; The feeding device further includes a lifting block 17 and a lifting cylinder 18, wherein the lifting block 17 is arranged in the silo 3, the lifting cylinder 18 is connected to the connecting plate, and the telescopic end of the lifting cylinder 18 is connected to the bottom surface of the lifting block 17, thereby driving the lifting cylinder 18 to move along the height direction of the silo 3; Furthermore, the feeding device further comprises a grabbing module, the grabbing module comprises a mounting frame 19, a grabbing suction cup 21 and a flipping driver 20, and the flipping driver 20 is preferably a motor; The mounting frame 19 is disposed on the workbench 2, the flipping driver 20 is connected to the mounting frame 19, and the driving shaft of the flipping driver 20 is connected to the grabbing suction cup 21; As the sheets are continuously transferred, the height of the sheet stack will continue to decrease, and the position of the sheet at the top will continue to decrease, affecting the subsequent transfer; the stacked sheets can be continuously lifted by the cooperation of the lifting block 17 and the lifting cylinder 18, and the optical fiber sensor 16 can ensure that the top sheet is always in the same position, that is, the best transfer position; Secondly, through the above adjustment, the grabbing device only needs to keep the grabbing station fixed, and no lifting device is needed, thereby simplifying the entire grabbing device; At the same time, it should be pointed out that in order to facilitate the placement of the slices to be transferred, the size of the silo 3 will be larger than the size of the slices. When the workbench 2 is tilted in the above manner, the rotation point is the lowest point. Correspondingly, there is also a lowest point in the silo 3, and the surface intersecting with the lowest point is the reference surface. During the tilting process, the stacked slices to be transferred will slide toward the lowest point, and their two side surfaces will eventually collide with the two reference surfaces to complete the adjustment of the slices, ensuring that all slices are in the correct transfer position, thereby ensuring the accuracy of the grabbing point. Secondly, the inclined setting can also cooperate with the vibration to effectively reduce the force between the sheets, and the structure is simple, which meets the two requirements of separating the sheets and arranging the sheets at the same time.

[0025] Furthermore, flexible silicone strips are provided on the two reference surfaces, which can effectively buffer the impact force of the thin slice, thereby improving the protection effect on the side of the thin slice and preventing the edge from excessive wear.

[0026] Furthermore, a vibration module is provided on the workbench 2, and the vibration module includes a high-frequency vibrator 22, and the high-frequency vibrator 22 is connected to the workbench 2. At the same time, an avoidance hole is provided on the frame 1, and the high-frequency vibrator 22 is arranged in the avoidance hole; When the present application is used, the sheets to be transported are first stacked and placed in the silo, and then the staff sets the tilt angle and direction as required; The workbench is controlled to tilt to a specified position by the first telescopic module and the second telescopic module, and the high-frequency vibrator is started during the tilting process of the workbench to achieve high-frequency and low-amplitude vibration of the workbench; during the adjustment process, there is a gap between the inner wall of the silo and the material stack, so during the tilting process, the stack of thin sheets will collide with the inner wall of the silo, and the high-frequency vibration destroys the force between the thin sheets, so during the collision process, the thin sheets will shift relative to each other, thereby achieving the arrangement of the thin sheets and ensuring that all the thin sheets are in the correct grasping area; after the adjustment is in place, the high-frequency vibrator stops working; Then, the top sheet is controlled to rise to the grabbing station by the lifting cylinder and the optical fiber sensor. At this time, the grabbing module completes the adsorption and grabbing of the top sheet, and at the same time, the high-frequency vibrator and the ion wind generator are started. The top sheet is completely separated by the dual effects of the ion wind and the high-frequency low-amplitude vibration. At the same time, the lifting cylinder descends, and the sheet separation is completed and transferred; Repeat the above process to continuously complete the sheet transfer operation; At the same time, the ion wind module is started to blow ion wind into the silo, thereby eliminating static electricity on the surface of the slices, and then achieving effective separation of the slices, ensuring that the slices are completely separated; Then the top thin surface can be grabbed by the grabbing module, so that the thin slices can be transferred piece by piece. Van der Waals force is a weak interaction force between molecules, which is mainly manifested in three aspects: between dipoles and dipoles, between induced dipoles and dipoles, and dispersion force. In the thin film stacking scenario described in the present application, the main reason for the mutual adhesion of oxide ceramic thin films during the stacking process is the van der Waals force, that is, when the surface of the thin film is smooth and in close contact (especially ultra-thin materials with a thickness of ≤0.2mm), the molecular spacing between the contact surfaces is extremely small (usually nanometers), and the dispersion force will be significantly enhanced, resulting in the adhesion of the thin films and being difficult to separate. In the technical solution described in the present application, the workbench will be tilted first. During the tilting process, the adhesion between the thin films will be destroyed due to the sliding of the thin films. At the same time, high-frequency vibration directly acts on the silo and the stacked thin films. The tilted placement and the vibration in the normal direction generate a horizontal component shear force, which causes a small sliding friction between the thin films and destroys the adsorption balance of the molecular contact surface. Secondly, since the present application uses high-frequency and low-amplitude vibration, the vibration frequency is set to 100-200 Hz, which is much higher than the operating frequency of manual separation (usually <10 Hz). The high-frequency vibration generates continuous dynamic stress waves on the contact surface of the thin sheet. The amplitude is controlled at 0.1-0.5mm, which can not only avoid the large displacement of the sheet and cause dislocation, but also accumulate energy through tiny vibrations, thereby intensifying the thermal motion of molecules on the surface of the sheet and weakening the intermolecular bonding energy. The vibration of high-frequency vibration can be converted into thermal energy, and the local temperature rise will further weaken the van der Waals force. Finally, in each vibration cycle, the thin film produces micrometer-level displacement in the vertical direction (for example, when the amplitude is 0.3 mm, the instantaneous separation distance is about tens of micrometers). When the separation distance exceeds the effective range of van der Waals force (usually <10 nm), the intermolecular attraction is cut off, thereby weakening the van der Waals force. That is, the present application destroys the van der Waals force between the slices as much as possible from the source by directly acting on the high-frequency low-amplitude vibration of the silo and superimposing the tilted setting of the worktable, thereby achieving effective separation of the slices and being able to maintain the separation state of the slices for a long time.

[0027] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A feeding device for thin sheets, characterized in that: comprising a frame (1); A workbench (2), the workbench (2) being hingedly connected to the frame (1); a silo (3) for placing slices to be transferred is provided on the workbench (2); An inclination adjustment module, the inclination adjustment module is arranged on the frame (1), and the workbench (2) is connected to the inclination adjustment module to control the inclination angle of the workbench (2); an ion wind module, the ion wind module being in communication with the silo (3) so as to blow ion wind toward the sheets to be transferred stored in the silo (3); A grabbing module, the grabbing module is connected to the workbench (2); A vibration module, wherein the vibration module is connected to the workbench (2).

2. A feeding device for sheets according to claim 1, characterized in that: The feeding device also includes a guide rod (4), one end of which is connected to the workbench (2) along the axis of the guide rod (4), and the other end of which is provided with a universal ball (5). A rotating seat (6) is also provided on the frame (1), and the universal ball (5) is rotatably connected to the rotating seat (6).

3. A feeding device for sheets according to claim 1 or 2, characterized in that: The inclination adjustment module comprises a first telescopic module (7) and a second telescopic module (8) which are arranged on the frame (1); the first telescopic module (7) and the second telescopic module (8) respectively abut against the workbench (2).

4. A feeding device for sheets according to claim 3, characterized in that: The frame (1) is also provided with a guide sleeve (9), the workbench (2) is also provided with a guide column (10), the guide column (10) is provided with a limiting surface (11) with a conical structure, and the guide sleeve (9) is provided with a limiting hole (12) that fits with the limiting surface (11).

5. A feeding device for sheets according to claim 1, characterized in that: The material bin (3) is provided with an ion wind transport chamber (13), and along the axial direction of the ion wind transport chamber (13), the material bin (3) is also provided with a plurality of ion wind nozzles (14), and each of the ion wind nozzles (14) is respectively connected to the ion wind transport chamber (13).

6. A feeding device for sheets according to claim 5, characterized in that: The ion wind module comprises an ion wind generator (15), and the ion wind generator (15) is connected to the ion wind delivery chamber (13) through an ion wind delivery pipe.

7. A feeding device for sheets according to claim 5, characterized in that: The material bin (3) is also provided with an optical fiber sensor (16).

8. A feeding device for sheets according to claim 1, characterized in that: The loading device further comprises a lifting block (17) and a lifting cylinder (18) which are connected to each other, wherein the lifting cylinder (18) is connected to the workbench (2), and the lifting block (17) is located in the silo (3) to lift the slice to be transferred.

9. A feeding device for sheets according to claim 1, characterized in that: The grabbing module comprises a mounting frame (19), wherein the mounting frame (19) is connected to the workbench (2), and a flipping drive (20) and a grabbing suction cup (21) are also arranged on the mounting frame (19), wherein the grabbing suction cup (21) is connected to the flipping drive (20).

10. A feeding device for sheets according to claim 1, characterized in that: The vibration module comprises a high-frequency vibrator (22), and the high-frequency vibrator (22) is connected to the workbench (2).

Images