Method for automatically feeding sheet protective film

Abstract

The invention relates to the technical field of feeding methods, and discloses an automatic feeding method for a sheet stock protective film, which comprises a sheet stock positioning device, a stock bin replacement mechanism and a sheet stock lifting device, the method further comprises steps (1) to (5). The stock bin replacement mechanism is adopted, the bottom plate is arranged, and the stock bin replacement mechanism is divided into the material taking area and the material preparation area, so that material preparation of the stock bin can be performed in the material preparation area in advance when working in the material taking area, and the replacement time is shortened; and the primary positioning of the stock bin can be realized by adopting a bull eye universal wheel and a limiting guide groove, the positioning time and the limiting guide are shortened, and meanwhile, the labor is saved when a worker pushes the stock bin.

Description

Technical Field

[0001] The invention relates to the technical field of feeding methods, in particular to a method for automatically feeding a sheet material protective film. Background Art

[0002] Sheet protective film, also known as sheet material, is mostly used to stick it on the outer shell of electronic products after electronic products are processed, for example: on the computer screen, the outside of the computer plastic shell, etc. This prevents electronic products from being scratched and dusted during subsequent transportation, achieving the corresponding protection purpose. The sheets will be cut to size according to the specific product, and a large number of sheets of the same size will be stacked and stored. When needed, a certain number of stacked sheets will be transferred to a position where the corresponding equipment can take the materials, so that the corresponding equipment can take them. Usually, when the sheets are directly stored or transferred, they are carried out in a silo, and when the silo is placed at the material taking station, the silo needs to be positioned and fixed so that the silo does not move during use and the position of the sheets is accurate.

[0003] However, in actual use, after the sheets in a silo are taken out, the silo needs to be replaced. The staff needs to carry the next silo to the material taking station, and then position and fix the silo. The whole replacement process is time-consuming, resulting in low production efficiency; and it is laborious to manually fine-tune the position of the silo; during the transportation or transfer of the stacked sheets, some of the sheets will be difficult to maintain the original neatly stacked state, and will pop out from the side or tilt, etc., resulting in the inability to guarantee the accurate position of the sheets when the corresponding equipment takes the sheets, and there will be problems of attachment misalignment after taking the materials out of the position; and after the sheets are continuously taken out, the height of the stacked sheets will gradually decrease, so that the corresponding equipment will have a large height difference and it will be difficult to take the materials. Summary of the invention

[0004] The invention mainly provides a method for automatically feeding a sheet material protective film.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A method for automatically feeding a sheet material protective film, comprising a sheet material positioning device, a material bin replacement mechanism and a sheet material lifting device;

[0007] The silo replacement mechanism includes a bottom plate and a bull's eye universal wheel arranged at the bottom of the silo frame, the bottom plate is divided into a material taking area and a material preparation area, and a limiting guide groove matching the bull's eye universal wheel is opened on the bottom plate;

[0008] The sheet material positioning device comprises a silo frame, a material receiving plate is placed on the silo frame, and L-shaped positioning plates for limiting the material receiving plate are arranged at three adjacent corners of the silo frame; it also comprises an L-shaped mounting plate arranged on the bottom plate, a first pushing mechanism and a second pushing mechanism are arranged on the L-shaped positioning plate, and the pushing directions of the first pushing mechanism and the second pushing mechanism are 90°; a fixing mechanism for fixing the silo frame is arranged on the bottom plate;

[0009] The sheet material lifting device comprises a mounting frame, a lifting assembly is arranged on the mounting frame, a lifting plate is arranged at the front end of the lifting assembly, and the lifting plate is displaced up and down by the driving of the lifting assembly; a displacement notch is arranged at the rear end of the silo frame to match the up and down displacement of the lifting plate, and the material receiving plate is displaced up and down by the driving of the lifting plate; sheet material anti-adhesion mechanisms are arranged on the left and right sides of the mounting frame, and the lower end height of the sheet material anti-adhesion mechanisms is higher than the upper end height of the material receiving plate;

[0010] The side of the silo frame is provided with a transverse notch to match the transverse displacement of the lifting plate;

[0011] The following steps are also included:

[0012] (1) The silo component containing stacked sheets is transported to the material preparation area of ​​the bottom plate by a transport device, and is initially positioned by the bull's eye universal wheels provided at the bottom of the silo frame and the limiting guide grooves provided on the bottom plate, and then the silo component is pushed from the material preparation area on the bottom plate to the material removal area;

[0013] (2) After the silo component reaches the material removal area, the entire component is fixed in position through the fixing assembly and the silo frame;

[0014] (3) The first pushing mechanism and the second pushing mechanism on the L-shaped mounting plate repeatedly work to repeatedly impact and push the side surfaces of the two adjacent edges of the stacked sheet protective films, so that the stacked sheet protective films are adjusted in position with the L-shaped positioning plate, so that the exposed sheet protective films are reset, and after all the sheet protective films are reset, the first pushing mechanism and the second pushing mechanism abut against the two adjacent edges of the stacked sheet protective films, so as to cooperate with the other three L-shaped positioning plates to achieve positioning;

[0015] (4) The lifting plate is driven up and down by the lifting assembly, so that the lifting plate drives the material receiving plate on the silo rack to move up and down; the sheet anti-adhesion mechanism arranged on the left and right sides of the mounting frame is used to abut the sheet stacked on the material receiving plate;

[0016] (5) Finally, the silo component after taking out the sheet material is directly removed from the material taking area on the bottom plate.

[0017] Among them, the silo components include silo racks, material receiving plates, L-shaped positioning plates, bull's eye universal wheels, etc.

[0018] The silo replacement mechanism is adopted, and the bottom plate is set and divided into the material taking area and the material preparation area, so that the silo can be prepared in advance in the material preparation area when working in the material taking area, reducing the replacement time; and the bull's eye universal wheel and limit guide groove can realize the initial positioning of the silo, shorten the positioning time and limit guide, and make the staff more labor-saving when pushing;

[0019] The sheet positioning device can realize the preliminary positioning and transfer of the stacked sheets through the silo rack, the material receiving plate and the L-shaped positioning plate, and the placed sheets will fall over and scatter during the transfer process; the two adjacent sides of the stacked sheets can be repeatedly impacted and pushed by the first pushing mechanism and the second pushing mechanism, so that the emerged sheets can be reset; at the same time, after the reset, the first pushing mechanism and the second pushing mechanism can be used in conjunction with the three L-shaped positioning plates to realize the final positioning of the stacked sheets, so that the material taking device can accurately take the materials and effectively prevent the sheets from being misplaced and attached; compared with the method of manually adjusting the position of the stacked sheets, the work intensity is reduced and the work efficiency is improved; the position of the silo rack can be fixed by setting a fixing mechanism, so as to avoid the displacement of the silo rack during the process of taking the sheets, and the final positioning of the silo rack can be realized;

[0020] By adopting a sheet material lifting device, the lifting plate and the material receiving plate can be driven to move up and down through the lifting assembly arranged on the mounting frame, thereby driving the sheets stacked on the material receiving plate to move up and down, preventing the sheets from being difficult to take out due to the large height difference between the sheets and the corresponding equipment; the setting of the displacement notch can ensure that the lifting plate does not collide with the silo frame when driving the material receiving plate to move up and down; at the same time, the sheet material anti-sticking mechanism is set up to increase the friction between it and the side of the stacked sheets, so that when the top sheet is taken, it is separated from the sheet below, preventing the two from sticking and being taken at the same time; and the lower end height of the sheet material anti-sticking mechanism is higher than the upper end height of the material receiving plate, which can prevent it from colliding with the material receiving plate and the silo frame.

[0021] Furthermore, the fixing mechanism includes a mounting block arranged on one side of the bottom plate, the mounting block is provided with a through hole, a plug rod is slidably connected in the observation hole, and the silo frame is provided with a plug hole for the plug rod to be inserted; an elastic reset assembly is arranged on the plug rod, and the elastic reset assembly includes a first limit plate and a second limit plate arranged on the plug rod corresponding to the two sides of the mounting block, and an elastic member arranged between the first limit plate and the mounting block. With this structure, the plug rod slides in the through hole, so that the inner end of the plug rod is inserted into the plug hole on the silo frame, thereby achieving fixation; and the elastic member can keep the plug rod stable in the plug hole to prevent the plug rod from falling out.

[0022] Furthermore, the bottom plate is provided with a limiting side plate for cooperating with the silo frame. When the silo moves from the material preparation area to the material collection area, the limiting side plate is used to limit the position, thereby preventing the silo from excessive displacement, and enabling pre-positioning, and then cooperating with the fixing mechanism to achieve good limiting and fixing.

[0023] Furthermore, the bottom plate is provided with limit blocks at both the front and rear sides, the inlet end of the limit blocks is provided with a first rounded corner, and the matching end of the silo rack is provided with a second rounded corner. With this structure, when the silo rack moves into the material preparation area, the first rounded corner and the second rounded corner are used to achieve a guiding effect.

[0024] Furthermore, the first pushing mechanism and the second pushing mechanism have the same structure; the first pushing mechanism includes a positioning cylinder installed on the L-shaped mounting plate, a positioning push plate is provided at the output end of the cylinder, a positioning guide rod is provided on the positioning push plate, and a positioning guide hole matching the positioning guide rod is provided on the L-shaped mounting plate. With this structure, the positioning push plate can be driven to reciprocate by the positioning cylinder, so that the positioning push plate impacts and pushes the side of the stacked sheets, and the positioning guide rod is used to enhance the stability of the entire structure. A buffer pad is provided on the inner side of the positioning push plate. The use of the buffer pad can prevent the positioning push plate from directly contacting the sheets, effectively protecting the sheets.

[0025] Furthermore, the material receiving plate is provided with a positioning notch that matches the positioning push plate. With this structure, the positioning push plate can avoid collision with the material receiving plate during operation. The upper surface area of ​​the material receiving plate is larger than the upper surface area of ​​a single sheet. The upper surface area of ​​the material receiving plate is larger than the upper surface area of ​​a single sheet, which can allow a certain space between the sheet and the surrounding L-shaped positioning plate, thereby reducing the difficulty of placing the sheet on the material receiving plate, and the staff can directly place it.

[0026] Furthermore, a side baffle is provided on one side of the silo frame to enhance the effect of positioning and limiting the sheet material.

[0027] Furthermore, the lifting assembly includes two support frames arranged at the rear side of the mounting frame, a lifting screw is rotatably connected between the two support frames, one end of the lifting screw passes through the support frame at the same end and is fixedly connected to the output end of the motor, a moving seat is threadedly connected to the lifting screw, a connecting plate is arranged at the front side of the moving seat, a guide rail is arranged between the connecting plate and the mounting frame; the lifting plate is arranged at the front side of the connecting plate. With this structure, the lifting screw can be driven to rotate by the motor, thereby driving the moving seat to move up and down in coordination with the connecting plate and the guide rail; the guide rail can be limited to prevent the moving seat from rotating with it. A positioning cone is arranged on the lifting plate, and a positioning cone hole cooperating with the positioning cone is arranged on the receiving plate. With this arrangement, better positioning and limiting can be achieved through the positioning cone and the positioning cone hole.

[0028] Further, the sheet anti-adhesion mechanism includes a fixed frame arranged on the mounting frame, the front end of the fixed frame is provided with an up-and-down sliding assembly, the up-and-down sliding assembly is provided with a sliding plate, the sliding plate is threadedly connected with an adjusting screw, the inner end of the adjusting screw is rotatably connected with an anti-adhesion plate, the inner side of the anti-adhesion plate is provided with a friction pad, the outer side of the anti-adhesion plate is provided with a connecting guide rod, and the connecting guide rod is slidably connected with the sliding plate. Wherein, the lower end heights of the sliding plate, the anti-adhesion plate and the friction pad are higher than the upper end height of the material receiving plate. In this way, the sliding plate can be displaced up and down by the up-and-down sliding assembly arranged at the front end of the fixed frame, and can be driven to move the anti-adhesion plate closer to or away from the stacked sheets by rotating the adjusting screw, and after the structure is abutted against the stacked sheets, when the lifting assembly drives the material receiving plate to move up and down, it can also cooperate with the up-and-down sliding assembly to move up and down, so that there is no need to adjust the position of the anti-adhesion plate many times.

[0029] Furthermore, the up and down sliding assembly includes a protrusion strip arranged on the side of the sliding plate, a groove block arranged at the front end of the fixing frame, and an anti-slip block arranged at the upper end of the protrusion strip; the protrusion strip is slidably connected with the groove block. The lower end height of the protrusion strip is higher than the upper end height of the material receiving plate. With such a configuration, the structure is simple, and the protrusion strip can slide in cooperation with the groove block, and the lowest position of the protrusion strip can be limited by the setting of the anti-slip block, and it can be prevented from falling off. The friction pad is made of rubber material. Made of rubber material, it has low cost and can effectively cooperate to separate the sheet materials.

[0030] Beneficial effects: (1) A silo replacement mechanism is adopted, and a bottom plate is set and divided into a material taking area and a material preparation area, so that when working in the material taking area, the material can be prepared in the material preparation area in advance, thereby reducing the replacement time; and the bull's eye universal wheel and the limit guide groove are adopted to achieve the initial positioning of the silo, shorten the positioning time and limit guide, and make it more labor-saving for the staff to push; (2) A sheet positioning device is adopted, which can realize the initial positioning and transfer of stacked sheets through the silo frame, the material receiving plate and the L-shaped positioning plate, and the placed sheets will fall over and scatter during the transfer process; the first pushing mechanism and the second pushing mechanism can repeatedly impact and push the two adjacent edges of the stacked sheets, so that the emerging sheets can be reset; at the same time, after the reset, the first pushing mechanism and the second pushing mechanism can be used in conjunction with the three L-shaped positioning plates to achieve the final positioning of the stacked sheets, so that the material taking equipment can accurately take the materials and effectively prevent the sheets from being misplaced and attached; compared with the use of The manual adjustment of the position of the stacked sheets reduces the workload and improves the work efficiency; the fixing mechanism can be used to fix the position of the silo rack, thereby preventing the silo rack from shifting during the process of taking the sheets, and achieving the final positioning of the silo rack; (3) a sheet lifting device is used, which can drive the lifting plate and the receiving plate to move up and down through the lifting assembly set on the mounting frame, thereby driving the sheets stacked on the receiving plate to move up and down, thereby preventing the sheets from being difficult to take due to the large height difference between the sheets and the corresponding equipment; the setting of the displacement notch can ensure that the lifting plate does not collide with the silo rack when driving the receiving plate to move up and down; at the same time, the sheet anti-sticking mechanism is set to increase the friction between it and the side of the stacked sheets, thereby separating the top sheet from the lower sheet when it is taken, preventing the two from sticking and being taken at the same time; and the lower end height of the sheet anti-sticking mechanism is higher than the upper end height of the receiving plate, thereby preventing it from colliding with the receiving plate and the silo rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is an oblique schematic diagram of the bottom plate of this embodiment;

[0032] Figure 2 For this embodiment Figure 1 Middle A is an enlarged schematic diagram;

[0033] Figure 3 For this embodiment Figure 1 Middle B is an enlarged schematic diagram;

[0034] Figure 4 is a schematic side view of the bottom plate of this embodiment;

[0035] Figure 5 For this embodiment Figure 4 Middle C is an enlarged schematic diagram;

[0036] Figure 6 This is a schematic oblique view of the L-shaped positioning plate of this embodiment;

[0037] Figure 7 For this embodiment Figure 6 Middle A is an enlarged schematic diagram;

[0038] Figure 8 This is a top view schematic diagram of the L-shaped positioning plate of this embodiment;

[0039] Fig. 9 For this embodiment Figure 8 Middle B is an enlarged schematic diagram;

[0040] Fig.10 This is a schematic oblique view of the material receiving plate of this embodiment;

[0041] Fig.11 is a rear view schematic diagram of the motor of this embodiment;

[0042] Fig.12 It is a schematic side view of the motor of this embodiment.

[0043] Figure numerals: bottom plate 1, silo frame 2, bull's eye universal wheel 3, limiting guide groove 4, mounting block 5, plug rod 6, first limiting plate 7, second limiting plate 8, elastic member 9, limiting side plate 10, limiting block 11, first fillet 12, material receiving plate 13, L-shaped positioning plate 14, L-shaped mounting plate 15, positioning cylinder 16, positioning push plate 17, positioning guide rod 18, positioning notch 19, side baffle 20, mounting frame 21, lifting plate 22, support frame 23, lifting screw 24, motor 25, moving seat 26, connecting plate 27, guide slide rail 28, positioning cone 29, fixed frame 30, sliding plate 31, adjusting screw 32, anti-sticking plate 33, connecting guide rod 34, protrusion strip 35, groove block 36, anti-slip block 37. DETAILED DESCRIPTION

[0044] The following is a detailed description of the technical solution of the automatic feeding method of a sheet material protective film according to the present invention in conjunction with an embodiment.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] like Figures 1 to 12As shown, a method for automatically feeding a sheet material protective film in this embodiment includes a sheet material positioning device, a hopper replacement mechanism and a sheet material lifting device; the hopper replacement mechanism includes a bottom plate 1, a bull's eye universal wheel 3 arranged at the bottom of a hopper frame 2, the bottom plate 1 is divided into a material taking area and a material preparation area, and a limiting guide groove 4 matching the bull's eye universal wheel 3 is opened on the bottom plate 1; the sheet material positioning device includes a hopper frame 2, a material receiving plate 13 is placed on the hopper frame 2, and L-shaped positioning plates 14 for limiting the material receiving plate 13 are arranged on three adjacent corners of the hopper frame 2; it also includes an L-shaped mounting plate 15 arranged on the bottom plate 1, and a first pushing mechanism and a second pushing mechanism are arranged on the L-shaped positioning plate 14, and the first pushing mechanism and the second pushing mechanism are The pushing direction of the mechanism is 90°; a fixing mechanism for fixing the silo rack 2 is provided on the bottom plate 1; the sheet lifting device includes a mounting frame 21, a lifting assembly is provided on the mounting frame 21, a lifting plate 22 is provided at the front end of the lowering assembly, and the lifting plate 22 is displaced up and down by the driving of the lifting assembly; a displacement notch is provided at the rear end of the silo rack 2 to cooperate with the up and down displacement of the lifting plate 22, and the receiving plate 13 is displaced up and down by the driving of the lifting plate 22; sheet anti-adhesion mechanisms are provided on the left and right sides of the mounting frame 21, and the lower end height of the sheet anti-adhesion mechanism is higher than the upper end height of the receiving plate 13; a lateral notch is provided on the side of the silo rack 2 to cooperate with the lateral displacement of the lifting plate 22;

[0047] The following steps are also included:

[0048] (1) The silo component containing stacked sheets is transported to the material preparation area of ​​the bottom plate 1 by means of a transport device, and is initially positioned by means of the bull's eye universal wheels 3 provided at the bottom of the silo frame 2 and the limiting guide grooves 4 provided on the bottom plate 1, and then the silo component is pushed from the material preparation area on the bottom plate 1 to the material removal area;

[0049] (2) After the silo component reaches the material removal area, the position of the entire component is fixed by the fixing assembly in conjunction with the silo frame 2;

[0050] (3) The first pushing mechanism and the second pushing mechanism on the L-shaped mounting plate 15 repeatedly work to repeatedly impact and push the side surfaces of the two adjacent edges of the stacked sheet protective films, so that the stacked sheet protective films are adjusted in position in cooperation with the L-shaped positioning plate 14, so that the exposed sheet protective films are reset, and after all the sheet protective films are reset, the first pushing mechanism and the second pushing mechanism abut against the two adjacent edges of the stacked sheet protective films, so as to cooperate with the other three L-shaped positioning plates 14 to achieve positioning;

[0051] (4) The lifting plate 22 is driven to move up and down by the lifting assembly, so that the lifting plate 22 drives the material receiving plate 13 on the silo rack 2 to move up and down; the sheet anti-adhesion mechanism provided on the left and right sides of the mounting frame 21 is used to abut the stacked sheets on the material receiving plate 13;

[0052] (5) Finally, the silo component after taking out the sheet material is directly removed from the material taking area on the bottom plate 1.

[0053] The fixing mechanism includes a mounting block 5 arranged on one side of the bottom plate 1, a through hole is provided on the mounting block 5, a plug rod 6 is slidably connected in the observation hole, and a plug hole for inserting the plug rod 6 is provided on the silo frame 2; an elastic reset component is provided on the plug rod 6, and the elastic reset component includes a first limiting piece 7 and a second limiting piece 8 provided on the plug rod 6 on both sides of the mounting block 5, and an elastic member 9 provided between the first limiting piece 7 and the mounting block 5. A limiting side plate 10 for matching the silo frame 2 is provided on the bottom plate 1. Limiting blocks 11 are provided on the front and rear sides of the bottom plate 1, and a first fillet 12 is provided at the inlet end of the limiting block 11, and a second fillet is provided at the matching end of the silo frame 2. The first pushing mechanism and the second pushing mechanism have the same structure; the first pushing mechanism includes a positioning cylinder 16 installed on the L-shaped mounting plate 15, a positioning push plate 17 is provided at the output end of the cylinder, a positioning guide rod 18 is provided on the positioning push plate 17, and a positioning guide hole matching the positioning guide rod 18 is provided on the L-shaped mounting plate 15. A buffer pad is provided on the inner side of the positioning push plate 17. A positioning notch 19 matching the positioning push plate 17 is provided on the receiving plate 13. With this structure, the positioning push plate 17 can avoid colliding with the receiving plate 13 during operation. The upper surface area of ​​the receiving plate 13 is larger than the upper surface area of ​​a single sheet of material. A side baffle 20 is also provided on one side of the silo rack 2. The lifting assembly includes two support frames 23 arranged at the rear side of the mounting frame 21, and a lifting screw 24 is rotatably connected between the two support frames 23. One end of the lifting screw 24 passes through the support frame 23 at the same end and is fixedly connected to the output end of the motor 25. A moving seat 26 is threadedly connected to the lifting screw 24, and a connecting plate 27 is arranged at the front side of the moving seat 26. A guide rail 28 is arranged between the connecting plate 27 and the mounting frame 21; the lifting plate 22 is arranged at the front side of the connecting plate 27. A positioning cone 29 is arranged on the lifting plate 22, and a positioning cone hole matching the positioning cone 29 is arranged on the receiving plate 13. The sheet material anti-adhesion mechanism includes a fixed frame 30 arranged on the mounting frame 21, the front end of the fixed frame 30 is provided with an up-down sliding assembly, the up-down sliding assembly is provided with a sliding plate 31, the sliding plate 31 is threadedly connected with an adjusting screw 32, the inner end of the adjusting screw 32 is rotatably connected with an anti-adhesion plate 33, the inner side of the anti-adhesion plate 33 is provided with a friction pad, the outer side of the anti-adhesion plate 33 is provided with a connecting guide rod 34, and the connecting guide rod 34 is slidably connected with the sliding plate 31. The up-down sliding assembly includes a convex block strip 35 arranged on the side of the sliding plate 31, a groove block 36 arranged at the front end of the fixed frame 30, and an anti-slip block 37 arranged at the upper end of the convex block strip 35; the convex block strip 35 is slidably connected with the groove block 36. The friction pad is made of rubber material.A silo replacement mechanism is adopted, and a bottom plate 1 is set and divided into a material taking area and a material preparation area, so that when working in the material taking area, the material silo can be prepared in the material preparation area in advance, reducing the replacement time; and the bull's eye universal wheel 3 and the limiting guide groove 4 are adopted to realize the initial positioning of the silo, shorten the positioning time and limiting guidance, and at the same time make it more labor-saving for the staff to push; a sheet material positioning device is adopted, and the initial positioning and transfer of the stacked sheets can be realized through the silo frame 2, the material receiving plate 13 and the L-shaped positioning plate 14, and the placed sheets will be dumped and scattered during the transfer process; the first pushing mechanism and the second pushing mechanism can repeatedly impact and push the two adjacent edges of the stacked sheets, so that the emerging sheets can be reset; at the same time, after the reset, the first pushing mechanism and the second pushing mechanism can be used in conjunction with the three L-shaped positioning plates 14 to realize the final positioning of the stacked sheets, so that the material taking equipment can accurately take the materials and effectively prevent the sheets from being misplaced and attached; compared with the manual adjustment of the stacked sheet position The arrangement method reduces the work intensity and improves the work efficiency; the position of the silo rack 2 can be fixed by setting a fixing mechanism, thereby preventing the silo rack 2 from being displaced during the process of taking the sheet materials, and achieving the final positioning of the silo rack 2; the sheet material lifting device can be used to drive the lifting plate 22 and the material receiving plate 13 to move up and down through the lifting assembly set on the mounting frame 21, thereby driving the sheets stacked on the material receiving plate 13 to move up and down, preventing the sheet materials from having a large height difference with the corresponding equipment and making it difficult to take the materials; the setting of the displacement notch can ensure that the lifting plate 22 does not collide with the silo rack 2 when driving the material receiving plate 13 to move up and down; at the same time, the sheet material anti-adhesion mechanism is set to increase the friction between it and the side of the stacked sheets, so that when the top sheet material is taken, it is separated from the sheet material below, preventing the two from adhering to each other and being taken at the same time; and the lower end height of the sheet material anti-adhesion mechanism is higher than the upper end height of the material receiving plate 13, which can prevent it from colliding with the material receiving plate 13 and the silo rack 2.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for automatically feeding a sheet protective film, characterized in that: It includes a sheet positioning device, a silo replacement mechanism and a sheet lifting device; The silo replacement mechanism includes a bottom plate and a bull's eye universal wheel arranged at the bottom of the silo frame, the bottom plate is divided into a material taking area and a material preparation area, and a limiting guide groove matching the bull's eye universal wheel is opened on the bottom plate; The sheet material positioning device comprises a silo frame, a material receiving plate is placed on the silo frame, and L-shaped positioning plates for limiting the material receiving plate are arranged at three adjacent corners of the silo frame; it also comprises an L-shaped mounting plate arranged on the bottom plate, a first pushing mechanism and a second pushing mechanism are arranged on the L-shaped positioning plate, and the pushing directions of the first pushing mechanism and the second pushing mechanism are 90°; a fixing mechanism for fixing the silo frame is arranged on the bottom plate; The sheet material lifting device comprises a mounting frame, a lifting assembly is arranged on the mounting frame, a lifting plate is arranged at the front end of the lifting assembly, and the lifting plate is displaced up and down by the driving of the lifting assembly; a displacement notch is arranged at the rear end of the silo frame to match the up and down displacement of the lifting plate, and the material receiving plate is displaced up and down by the driving of the lifting plate; sheet material anti-adhesion mechanisms are arranged on the left and right sides of the mounting frame, and the lower end height of the sheet material anti-adhesion mechanisms is higher than the upper end height of the material receiving plate; The side of the silo frame is provided with a transverse notch to match the transverse displacement of the lifting plate; The following steps are also included: (1) The silo component containing stacked sheets is transported to the material preparation area of ​​the bottom plate by a transport device, and is initially positioned by the bull's eye universal wheels provided at the bottom of the silo frame and the limiting guide grooves provided on the bottom plate, and then the silo component is pushed from the material preparation area on the bottom plate to the material removal area; (2) After the silo component reaches the material removal area, the entire component is fixed in position through the fixing assembly and the silo frame; (3) The first pushing mechanism and the second pushing mechanism on the L-shaped mounting plate repeatedly work to repeatedly impact and push the side surfaces of the two adjacent edges of the stacked sheet protective films, so that the stacked sheet protective films are adjusted in position in cooperation with the L-shaped positioning plate, so that the exposed sheet protective films are reset, and after all the sheet protective films are reset, the first pushing mechanism and the second pushing mechanism press against the two adjacent edges of the stacked sheet protective films, so as to cooperate with the other three L-shaped positioning plates to achieve positioning; (4) The lifting plate is driven up and down by the lifting assembly, so that the lifting plate drives the material receiving plate on the silo rack to move up and down; the sheet anti-adhesion mechanism arranged on the left and right sides of the mounting frame is used to abut the sheet stacked on the material receiving plate; (5) Finally, the silo component after taking out the sheet material is directly removed from the material taking area on the bottom plate.

2. The method according to claim 1, characterized in that: The fixing mechanism includes a mounting block arranged on one side of the base plate, a through hole is provided on the mounting block, an insertion rod is slidably connected in the observation hole, and a plug hole for inserting the insertion rod is provided on the silo rack; an elastic reset component is provided on the insertion rod, and the elastic reset component includes a first limiting plate and a second limiting plate arranged on the insertion rod on both sides of the mounting block, and an elastic member arranged between the first limiting plate and the mounting block.

3. The method according to claim 2, characterized in that: The bottom plate is provided with a limiting side plate for cooperating with the silo rack.

4. The method according to claim 3, characterized in that: Limiting blocks are arranged on the front and rear sides of the bottom plate, the inlet end of the limiting block is arranged with a first rounded corner, and the matching end of the silo frame is arranged with a second rounded corner.

5. The method according to claim 1, characterized in that: The first pushing mechanism and the second pushing mechanism have the same structure; the first pushing mechanism includes a positioning cylinder installed on the L-shaped mounting plate, a positioning push plate is provided at the output end of the cylinder, a positioning guide rod is provided on the positioning push plate, and a positioning guide hole matching the positioning guide rod is provided on the L-shaped mounting plate.

6. The method according to claim 5, characterized in that: The receiving plate is provided with a positioning notch which matches the positioning push plate.

7. The method according to claim 6, characterized in that: A side baffle is also provided on one side of the silo frame.

8. The method according to claim 1, characterized in that: The lifting assembly includes two support frames arranged at the rear side of the mounting frame, a lifting screw is rotatably connected between the two support frames, either end of the lifting screw passes through the support frame at the same end and is fixedly connected to the output end of the motor, a moving seat is threadedly connected to the lifting screw, a connecting plate is arranged on the front side of the moving seat, a guide slide rail is arranged between the connecting plate and the mounting frame; the lifting plate is arranged on the front side of the connecting plate.

9. The method according to claim 8, characterized in that: The sheet material anti-sticking mechanism includes a fixed frame arranged on the mounting frame, an upper and lower sliding assembly is arranged at the front end of the fixed frame, a sliding plate is arranged on the upper and lower sliding assembly, an adjusting screw is threadedly connected to the sliding plate, the inner end of the adjusting screw is rotatably connected to the anti-sticking plate, a friction pad is arranged on the inner side of the anti-sticking plate, a connecting guide rod is arranged on the outer side of the anti-sticking plate, and the connecting guide rod is slidably connected to the sliding plate.

10. The method according to claim 9, characterized in that: The up and down sliding assembly comprises a protruding block strip arranged on the side of the sliding plate, a groove block arranged at the front end of the fixing frame, and an anti-slip block arranged at the upper end of the protruding block strip; the protruding block strip is slidably connected with the groove block.

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