Three-layer sheet stripping machine

Abstract

The utility model relates to the technical field of sheet stripping equipment, in particular to a three-layer sheet stripping machine which comprises a case, and a waste film recycling bin, a feeding bin and a stripping bin are sequentially arranged in the length direction of the case. The feeding mechanism is used for placing the stacked sheet materials and gradually lifting the sheet materials; the label stripping mechanism is provided with a film clamping roller group; the feeding and film tearing mechanism is provided with a film pasting and pre-tearing assembly; and the sheet material forward pushing mechanism is provided with an adsorption guide plate and a pressing and pushing assembly which is arranged on the case in a sliding manner and is used for pressing the sheet material on the adsorption guide plate and pushing the sheet material forward. By arranging the feeding mechanism, the label stripping mechanism, the feeding and film tearing mechanism and the sheet stock forward pushing mechanism, three-layer sheet stock automatic stripping can be achieved, the production efficiency can be effectively improved, the product quality can be improved, the labor intensity can be reduced, the working environment can be improved, and the production cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet material stripping equipment, in particular to a three-layer sheet material stripping machine. Background Art

[0002] In auxiliary material mounting equipment, sheet materials are a common form of auxiliary material pasting. Multiple small-volume sheets are often pasted together on a whole piece of release paper. For protection, a protective film is also added to form a three-layer sheet. However, most of the current peeling equipment cannot peel off the protective film and the sheet from the release paper at the same time. Generally, the protective film is torn off the sheet manually and then put into the peeling equipment for peeling, which increases the labor intensity and affects the working efficiency of the equipment. Utility Model Content

[0003] Based on this, it is necessary to provide a three-layer sheet stripping machine that can automatically tear off the protective film and realize the stripping function at the same time, in view of the fact that most of the current stripping equipment cannot achieve the function of stripping the protective film and also stripping the sheet from the release paper. Generally, the protective film is torn off from the sheet manually and then put into the stripping equipment for stripping, which increases the labor intensity and affects the working efficiency of the equipment.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is to provide a three-layer sheet stripping machine, comprising:

[0005] The chassis is provided with a waste film recovery bin, a loading bin and a stripping bin in sequence along the length direction of the chassis;

[0006] A feeding mechanism is arranged in the feeding bin, and is used to place the stacked sheets and gradually lift the sheets;

[0007] The label peeling mechanism is arranged in the peeling chamber and is used to peel the sheet from the lower film. It has a film clamping roller group used to clamp the lower film of the sheet and pull the lower film;

[0008] The feeding and film-tearing mechanism is used to transfer the sheet material in the feeding bin to the stripping bin, and after pulling back the upper film of the sheet material and tearing it off, the upper film is sent back to the waste film recovery bin. It has a film pre-tearing component that turns over the upper film near one end of the film clamping roller group and clamps and strips the sheet material;

[0009] The sheet material forward pushing mechanism is slidably mounted on the chassis and is used to push the sheet material toward the label peeling mechanism and cooperate with the label peeling mechanism to peel the sheet material from the lower film. It has an adsorption guide plate fixed to the peeling bin and used to adsorb the sheet material, and a downward pressing and pushing component slidably mounted on the chassis and used to press the sheet material against the adsorption guide plate and push the sheet material forward.

[0010] Furthermore, the loading mechanism includes a lifting frame and a lifting drive unit for driving the lifting frame to lift and lower. Clamps that can approach each other are provided on both sides of the lifting frame. A screw rod and guide rod assembly for pushing the two clamps close to each other is provided on the lower side of the lifting frame. An L-shaped movable plate with adjustable position is provided on the lifting frame between the two clamps. It also includes a sensor assembly for detecting the presence or absence of sheet material and the lifting height of the sheet material.

[0011] Furthermore, the label peeling mechanism also includes a peeling knife assembly that cooperates with the film clamping roller group to peel the label from the lower layer of film. The peeling knife assembly includes a label output mounting plate with a slide rail, the label output mounting plate is slidably provided with a roller moving seat, and the label output mounting plate is provided with a push-back cylinder that drives the roller moving seat to move, and one roller of the film clamping roller group is arranged on the roller moving seat; the peeling knife assembly also includes a lifting seat, a label peeling blade arranged on the lifting seat, and upper and lower cylinders that drive the lifting seat to rise and fall, one end of the label peeling blade contacts one end of the adsorption guide plate, the upper and lower cylinders drive the label peeling blade to press down the lower layer of film, and the roller moving seat is pushed to move by the push-back cylinder, so that the roller installed on the roller moving seat is clamped with the other roller.

[0012] Furthermore, the feeding and film tearing mechanism also includes a guide rail group, a lifting and adsorption component slidably arranged on the guide rail group, and a first belt and a motor drive component arranged on the chassis for driving the lifting and adsorption component to reciprocate along the guide rail group. The film pre-tearing component is arranged on the lifting and adsorption component, and the lifting and adsorption component is driven by the first belt and the motor drive component to move to the feeding mechanism to pick up the material, and then the lifting and adsorption component is driven by the first belt and the motor drive component to move to the label peeling mechanism, and the sheet is placed on the label peeling mechanism. After the film pre-tearing component adsorbs the upper layer of the film of the sheet and flips it up 90 degrees, the lifting and adsorption component lifts the film pre-tearing component, and the sheet forward pushing mechanism pushes the sheet forward, so that the film clamping roller group pulls the lower layer of the film of the sheet, and then the lifting and adsorption component is driven by the first belt and the motor drive component to move to the waste film recovery bin to tear off the upper film.

[0013] Furthermore, the lifting and adsorption assembly includes a slide plate with a guide slider, a longitudinal plate with a vertical guide rail that slides in cooperation with the guide slider, and a driving cylinder arranged on the slide plate and with the output end connected to the longitudinal plate. Suction nozzles are evenly distributed on the longitudinal plate, and the film pre-tearing assembly is arranged on the longitudinal plate.

[0014] Furthermore, the film pre-tearing assembly includes a connecting frame and a first driving cylinder and a second driving cylinder arranged at the upper and lower ends of the connecting frame, the output end of the first driving cylinder is provided with a C-shaped frame, the bottom of the C-shaped frame is provided with a suction plate which can move up and down and can be turned over, the suction plate is hingedly provided with an auxiliary turning frame fixed to the second driving cylinder, the suction plate is hingedly provided with a clamping opening, the bottom of the second driving cylinder is provided with a fixed clamping plate extending to the clamping opening, the output end of the second driving cylinder is provided with an active clamping plate that cooperates with the fixed clamping plate to clamp the upper film, and the side surface on which the fixed clamping plate and the active clamping plate are combined is evenly provided with matching anti-slip stripes. After the suction plate absorbs the upper film, the first driving cylinder drives the C-shaped frame to retreat, so that the C-shaped frame pulls the suction plate. Since one end of the suction plate is hingedly provided with an auxiliary turning frame, the suction plate drives the upper film to turn outward 90 degrees, so that the turned upper film is located between the fixed clamping plate and the active clamping plate, and the second driving cylinder drives the active clamping plate and the fixed clamping plate to clamp the upper film.

[0015] Furthermore, the sheet forward pushing mechanism also includes a guide rail group arranged on both sides of the chassis, the downward pressing and pushing component is slidably arranged on the guide rail group, and the chassis is provided with a second belt and a motor driving component for driving the downward pressing and pushing component to move back and forth along the guide rail group.

[0016] Furthermore, the downward pressing propulsion assembly includes a slide, a downward pressing cylinder arranged on the slide, and a pressure plate connected to the output end of the downward pressing cylinder and connected to the slide at both ends through a sliding rod. The pressure plate is provided with several buffer parts, and one end of the buffer part is connected to a contact plate for pressing the sheet material.

[0017] Furthermore, the film clamping roller group includes an active roller and a driven roller, and a third belt and motor assembly for driving the active roller to rotate. The driven roller is arranged on a roller moving seat, and the active roller is arranged on a label mounting plate through a bearing seat. The active roller is evenly provided with a plurality of annular grooves along the axial direction, and a film outlet guide plate fixed on the label mounting plate is provided between the active roller and the driven roller. The top of the film outlet guide plate is formed with film stripping strips equal in number to the annular grooves and inserted into the annular grooves.

[0018] The beneficial effect of the utility model is as follows: by arranging a label peeling mechanism, a feeding and tearing film mechanism and a sheet material forward pushing mechanism on the chassis, the feeding and tearing film mechanism conveys the sheet material stacked on the feeding mechanism to the label peeling mechanism, and the adsorption guide plate adsorbs the sheet material, and at the same time, the film pre-tearing component adsorbs the upper film layer and turns it over to clamp the upper film layer, and then the film clamping roller group on the label peeling mechanism clamps the lower film layer, and then the feeding and tearing film mechanism retreats to tear off the upper film layer, and after the upper film layer is torn off, the downward pressing and pushing component on the sheet material forward pushing mechanism presses one end of the sheet material to push the sheet material toward the label peeling mechanism, and the film clamping roller group cooperates to gradually peel off the lower film layer from the sheet material to realize the sheet material peeling. The utility model can realize the automatic peeling of three-layer sheet material by arranging the feeding mechanism, the label peeling mechanism, the feeding and tearing film mechanism and the sheet material forward pushing mechanism, which can effectively improve production efficiency, improve product quality, reduce labor intensity, improve the working environment, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a top view of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the utility model from one perspective;

[0021] Figure 3 It is a structural schematic diagram of the feeding mechanism in the utility model;

[0022] Figure 4 It is a structural schematic diagram of the label peeling mechanism in the utility model;

[0023] Figure 5 This is a structural diagram of the feeding and film tearing mechanism in the utility model;

[0024] Figure 6 This is a structural schematic diagram of the film pre-tearing component in the utility model;

[0025] Figure 7 It is a structural schematic diagram of the sheet material forward pushing mechanism in the utility model. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0027] See also Figure 1 and Figure 2The present embodiment provides a three-layer sheet stripping machine, which includes a chassis 10, a feeding mechanism 20, a label stripping mechanism 30, a feeding and film tearing mechanism 40, and a sheet forward pushing mechanism 50. A waste film recovery bin, a feeding bin, and a stripping bin are sequentially arranged along the length direction of the chassis 10. The feeding mechanism 20 is arranged in the feeding bin, the label stripping mechanism 30 is arranged in the stripping bin, the sheet forward pushing mechanism 50 and the feeding and film tearing mechanism 40 are slidably arranged on the chassis 10, and the sheet forward pushing mechanism 50 is located below the feeding and film tearing mechanism 40. The chassis 10 is also provided with a control mechanism for controlling the feeding mechanism 20, the label stripping mechanism 30, the feeding and film tearing mechanism 40, and the sheet forward pushing mechanism 50 cooperates with the human-machine interface for operation, the feeding and film tearing mechanism 40 moves to the loading mechanism 20, sucks the sheet material in the loading bin and transfers it to the label peeling mechanism 30, after the label peeling mechanism 30 clamps the lower film of the sheet material, the feeding and film tearing mechanism 40 sucks the upper film of the sheet material and turns it 90 degrees and then clamps the upper film of the sheet material, after clamping, the feeding and film tearing mechanism 40 retreats to the waste film recovery bin, tears the upper film of the sheet material from the sheet material, completes the film tearing, the sheet material forward pushing mechanism 50 presses the sheet material and pushes one end of the sheet material to move toward the label peeling mechanism 30, and with the cooperation of the label peeling mechanism 30, separates the lower film of the sheet material from the sheet material to realize the peeling of the sheet material.

[0028] See also Figure 3 The feeding mechanism 20 is used to place the stacked sheets and gradually lift the sheets. The feeding mechanism 20 includes a lifting frame 201 slidably arranged in the feeding bin and a lifting drive unit 202 for driving the lifting frame 201 to lift and lower. Clamps 203 that can approach each other are arranged on both sides of the lifting frame 201. A screw rod 205 and a guide rod assembly 206 for pushing the two clamps 203 to approach each other are arranged on the lower side of the lifting frame 201. An L-shaped movable plate 204 with an adjustable position is arranged on the lifting frame 201 between the two clamps 203; and a sensor assembly 207 for detecting whether there are sheets and the lifting height of the sheets is also included. The sensor assembly 207 is arranged on the inner wall of the feeding bin, and the sensor assembly 207 and the lifting unit 202 are connected to the lifting unit 202. The lowering drive unit 202 is electrically connected, and by setting an adjustable clamping plate 203 and an L-shaped movable plate 204, it can fix sheets of different sizes to meet the needs of different customers. It is highly practical, and a sensor component 207 is set to lift the stacked sheets in real time. When the feeding and film tearing mechanism 40 grabs the top sheet, if the sensor component 207 does not sense the sheet, it feeds back a signal to the lifting drive unit 202, and the lifting drive unit 202 drives the lifting frame 201 to rise. When the sensor component 207 senses the sheet, it feeds back a signal to the lifting drive unit 202, so that the lifting drive unit 202 stops operating, so that the feeding and film tearing mechanism 40 can take the material.

[0029] See also Figure 4The label peeling mechanism 30 is mainly used to peel the sheet from the lower film. The label peeling mechanism 30 includes a film clamping roller group 301 and a peeling knife assembly 302 that cooperates with the film clamping roller group 301 to peel the label from the lower film. The peeling knife assembly 302 includes a label mounting plate 3021 with a slide rail, and the label mounting plate 3021 is slidably provided with a roller moving seat 3022, and the label mounting plate 3021 is provided with a push cylinder 3023 that drives the roller moving seat 3022 to move; the peeling knife assembly 302 also includes a lifting seat 3024 and a label peeling blade 3025 arranged on the lifting seat 3024 and an upper and lower cylinder 3026 that drives the lifting seat 3024 to rise and fall.

[0030] In addition, the film clamping roller group 301 is used to clamp the lower film of the sheet material and pull the lower film to separate the sheet material from the lower film. The film clamping roller group 301 includes an active roller 3011 and a driven roller 3012, and a third belt and a motor assembly for driving the active roller 3011 to rotate. The driven roller 3012 is arranged on the roller moving seat 3022, and the active roller 3011 is arranged on the label mounting plate 3021 through a bearing seat. The active roller 3011 is evenly provided with a plurality of annular grooves along the axial direction. A film discharging guide plate fixed on the label mounting plate 3021 is provided between the active roller 3011 and the driven roller 3012. The top of the film discharging guide plate is formed with a film stripping strip having the same number as the annular grooves and inserted into the annular grooves. The film discharging guide plate is provided to prevent the lower film from sticking to the active roller 3011 so that the lower film can be separated from the active roller 3011.

[0031] The working principle of the above-mentioned label peeling mechanism 30 is that after the feeding and tearing film mechanism 40 conveys the sheet material to the sheet material forward pushing mechanism 50, the upper and lower cylinders 3026 drive the label peeling blade 3025 to press down the lower film layer, and at the same time, the rear pushing cylinder 3023 pushes the roller moving seat 3022 to move, so that the active roller 3011 and the driven roller 3012 clamp the lower film layer, and the third belt and motor assembly drive the active roller 3011 to rotate, thereby pulling the lower film layer clamped by the active roller 3011 and the driven roller 3012, and at the same time, the sheet material forward pushing mechanism 50 cooperates to gradually push the sheet material, and the sheet material moves toward the label peeling blade 3025, and the label peeling blade 3025 peels the sheet material from the lower film layer.

[0032] See also Figure 5The feeding and tearing film mechanism 40 is mainly used to transfer the sheet material in the upper bin to the stripping bin, and after the upper film of the sheet material is pulled back and torn off, the upper film is returned to the waste film recovery bin. The feeding and tearing film mechanism 40 includes a film pre-tearing component 401, a guide rail group 402, a lifting and adsorption component 403, and a first belt and a motor drive component. The guide rail group 402 is arranged on one side of the chassis 10, and the lifting and adsorption component 403 is slidably arranged on the guide rail group 402. The first belt and the motor drive component are arranged on the chassis 10 and connected to the lifting and adsorption component 403 to drive the lifting and adsorption component 403 to move back and forth along the guide rail group 402. The film pre-tearing component 401 is arranged on the lifting and adsorption component Component 403, driven by the first belt and motor drive component to move the lifting and adsorption component 403 to the feeding mechanism 20 to pick up the material, and then driven by the first belt and motor drive component to move the lifting and adsorption component 403 to the label peeling mechanism 30, the sheet is placed on the label peeling mechanism 30, the film pre-tearing component 401 adsorbs the upper film of the sheet to turn it up 90 degrees, and then the lifting and adsorption component 403 lifts the film pre-tearing component 401, and the sheet forward pushing mechanism 50 pushes the sheet forward, so that the film clamping roller group 301 pulls the lower film of the sheet, and then the lifting and adsorption component 403 is driven by the first belt and motor drive component to move to the waste film recovery bin to tear off the upper film;

[0033] The lifting and adsorption assembly 403 includes a slide plate 4031 with a guide slider, a longitudinal plate 4032 with a vertical guide rail that slides with the guide slider, and a driving upper and lower cylinder 4033 disposed on the slide plate 4031 and connected to the longitudinal plate 4032 at the output end. The slide plate 4031 is slidably disposed on the guide rail assembly 402, and suction nozzles 4034 are evenly distributed on the longitudinal plate 4032. The film pre-tearing assembly 401 is disposed on the longitudinal plate 4032. The longitudinal plate 4032 is driven by the driving upper and lower cylinders 4033 to drive the suction nozzles 4034 to move downward, and the suction nozzles 4034 are controlled by the on-off air to absorb or release the sheet material, so as to realize automatic material taking.

[0034] Also, see Figure 6The film pre-tearing assembly 401 includes a connecting frame 4011 fixed on the longitudinal plate 4032, and a first driving cylinder 4012 and a second driving cylinder 4013 arranged at the upper and lower ends of the connecting frame 4011. The output end of the first driving cylinder 4012 is provided with a U-shaped frame 4014, and the bottom of the U-shaped frame 4014 is provided with a suction plate 4015 that can move up and down and can be turned over. The suction plate 4015 is hinged with an auxiliary turning frame 4016 fixed on the second driving cylinder 4013, and the suction plate 4015 is provided with a clamping opening. The bottom of the second driving cylinder 4013 is provided with an extension The fixed clamping plate 4017 extends to the clamping opening, and the output end of the second driving cylinder 4013 is provided with an active clamping plate 4018 that cooperates with the fixed clamping plate 4017 to clamp the upper film. The clamping opening is provided to facilitate the movement of the active clamping plate 4018, so that the active clamping plate 4018 and the fixed clamping plate 4017 can cooperate to clamp the upper film. The side surface where the fixed clamping plate 4017 and the active clamping plate 4018 are combined is evenly provided with matching anti-skid stripes, and the anti-skid stripes are provided to prevent the upper film from being separated from the active clamping plate 4018 and the fixed clamping plate 4017 when the upper film is pulled;

[0035] The working principle of the feeding and film tearing mechanism 40 is as follows: the first belt and the motor drive assembly drive the lifting and adsorption assembly 403 to move to the top of the feeding mechanism 20, and the upper and lower cylinders 4033 drive the longitudinal plate 4032 to drive the suction nozzle 4034 to move downward, so that the suction nozzle 4034 sucks the sheet material, and the lifting and adsorption assembly 403 is reset after taking the material, and then the first belt and the motor drive assembly drive the lifting and adsorption assembly 403 to move to the label peeling mechanism 30, and the sheet material is placed on the label peeling mechanism 30. After the active roller 3011 and the driven roller 3012 clamp the lower film, the suction plate 4015 absorbs the upper film, and the first driving cylinder 4012 drives the U-shaped frame 4014 to retreat, so that the U-shaped frame 4014 pulls the suction plate 4015. Since one end of the suction plate 4015 is hinged with an auxiliary turning frame 4016, the suction plate 4 015 drives the upper film to flip outward 90 degrees, so that the flipped upper film is located between the fixed clamping plate 4017 and the active clamping plate 4018, and the second driving cylinder 4013 drives the active clamping plate 4018 and the fixed clamping plate 4017 to clamp the upper film. After clamping the upper film, the first belt and the motor driving assembly drives the slide plate 4031 to retreat toward the waste film recovery bin, thereby driving the active clamping plate 4018 and the fixed clamping plate 4017 that clamp the upper film to retreat. When retreating to the position of the loading bin, the lifting adsorption assembly 403 is reset to realize automatic film tearing. When the active clamping plate 4018 and the fixed clamping plate 4017 are moved to the top of the waste film recovery bin, the active clamping plate 4018 and the fixed clamping plate 4017 are released, and the upper film falls into the waste film recovery bin, and a collection box is placed in the waste film recovery bin.

[0036] After the upper film is peeled off, the sheet forward pushing mechanism 50 is started and moves to the peeling chamber. The sheet forward pushing mechanism 50 is mainly used to push the sheet toward the label peeling mechanism 30 and cooperate with the label peeling mechanism 30 to peel the sheet from the lower film. Figure 7 The sheet material forward pushing mechanism 50 includes an adsorption guide plate 501 fixed to the stripping bin and used to adsorb the sheet material, a downward pressing and pushing component 502 slidably arranged on the chassis 10 and used to press the sheet material against the adsorption guide plate 501 and push the sheet material forward, and a guide rail group arranged on both sides of the chassis 10. One end of the label peeling blade 3025 contacts one end of the label peeling blade 3025 to facilitate the separation of the subsequent sheet material from the lower layer of the film. The downward pressing and pushing component 502 is slidably arranged on the guide rail group, and the chassis 10 is provided with a driving downward pressing and pushing component 502. The second belt and the motor drive assembly reciprocating along the guide rail assembly, the feeding and tearing film mechanism 40 conveys the sheet to the adsorption guide plate 501, the adsorption guide plate 501 adsorbs the sheet to prevent the sheet from moving due to shaking when the device moves, and then the pressing and pushing assembly 502 presses down the sheet away from the end of the label peeling mechanism 30, the second belt and the motor drive assembly drive the pressing and pushing assembly 502 to move along the guide rail assembly, and gradually pushes the sheet along the adsorption guide plate 501 toward the label peeling mechanism 30;

[0037] Among them, the downward pressing propulsion assembly 502 includes a slide 5021, a downward pressing cylinder 5022 arranged on the slide 5021, and a pressure plate 5023 connected to the output end of the downward pressing cylinder 5022 and connected to the slide 5021 at both ends through a sliding rod. The pressure plate 5023 is provided with a plurality of buffer parts, and a contact plate 5024 for pressing the sheet material is connected to one end of the buffer part. The buffer part is used to prevent the contact plate 5024 from being deformed and sticking to the adsorption guide plate 501 when a strong collision occurs when the contact plate 5024 is pressed down, thereby playing a buffering role.

[0038] In summary, the working principle of the present application is as follows: manually turning the screw rod 205, adjusting the distance between the two clamping plates 203 and manually adjusting the position of the L-shaped movable plate 204, so that the lifting frame 201 forms a discharge area, stacking the sheets in the discharge area, starting the equipment, the first belt and the motor drive assembly drive the lifting adsorption assembly 403 to move to the top of the feeding mechanism 20, and the upper and lower cylinders 4033 drive the longitudinal plate 4032 to drive the suction nozzle 4034 to move downward, so that the suction nozzle 4034 sucks the sheet After taking the material, the lifting adsorption component 403 is reset, and then the lifting adsorption component 403 is driven by the first belt and the motor drive component to move to the top of the adsorption guide plate 501, so that the sheet material is close to the label peeling blade 3025, and the film pre-tearing component 401 is close to the label peeling blade 3025, and the upper and lower cylinders 4033 drive the longitudinal plate 4032 to drive the suction nozzle 4034 to move downward, and the suction nozzle 4034 is cut off, and the sheet material is placed on the adsorption guide plate 501, so that the adsorption guide plate 501 adsorbs the sheet material;

[0039] At this time, the upper and lower cylinders 3026 drive the label peeling blade 3025 to press the lower film layer downward, and at the same time, the backward push cylinder 3023 pushes the roller moving seat 3022 to move, so that the active roller 3011 and the driven roller 3012 clamp the lower film layer. After the active roller 3011 and the driven roller 3012 clamp the lower film layer, the suction plate 4015 absorbs the upper film layer, and the first driving cylinder 4012 drives the U-shaped frame 4014 to retreat, so that the U-shaped frame 4014 pulls the suction plate 4015. Since one end of the suction plate 4015 is hinged with an auxiliary turning frame 4016, the suction plate 4015 drives the upper film layer to turn outward 90 degrees, so that the turned upper film layer is located between the fixed clamping plate 4017 and the active clamping plate 4017. 018, the second driving cylinder 4013 drives the active clamping plate 4018 and the fixed clamping plate 4017 to clamp the upper film. After clamping the upper film, the first belt and the motor driving assembly drive the slide plate 4031 to retreat toward the waste film recovery bin, thereby driving the active clamping plate 4018 and the fixed clamping plate 4017 that clamp the upper film to retreat. When retreating to the position of the loading bin, the lifting adsorption assembly 403 is reset to tear the upper film off the sheet, and the sheet forward pushing mechanism 50 is started. When the active clamping plate 4018 and the fixed clamping plate 4017 are moved to the top of the waste film recovery bin, the active clamping plate 4018 and the fixed clamping plate 4017 are released, and the upper film falls into the waste film recovery bin;

[0040] After the sheet forward pushing mechanism 50 is started, the second belt and motor drive assembly drives the downward pressing and pushing assembly 502 to move along the guide rail group, so that the downward pressing and pushing assembly 502 is close to the adsorption guide plate 501. When the second belt and motor drive assembly stop, the downward pressing cylinder 5022 drives the pressing plate 5023 to move downward, so that the contact plate 5024 presses the sheet away from one end of the label peeling mechanism 30. At the same time, the second belt and motor drive assembly cooperate with the third belt and motor assembly to pull the lower film sandwiched by the active roller 3011 and the driven roller 3012, and the second belt and motor drive assembly drives the pressing plate 5023 to push the sheet to move along the adsorption guide plate 501 toward the label peeling blade 3025, so that the label peeling blade 3025 peels the sheet off the lower film.

[0041] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A three-layer sheet stripping machine, characterized in that: include: The chassis is provided with a waste film recovery bin, a loading bin and a stripping bin in sequence along the length direction of the chassis; A feeding mechanism is arranged in the feeding bin, and is used to place the stacked sheets and gradually lift the sheets; The label peeling mechanism is arranged in the peeling chamber and is used to peel the sheet from the lower film. It has a film clamping roller group used to clamp the lower film of the sheet and pull the lower film; The feeding and film-tearing mechanism is used to transfer the sheet material in the feeding bin to the stripping bin, and after pulling back the upper film of the sheet material and tearing it off, the upper film is sent back to the waste film recovery bin. It has a film pre-tearing component that turns over the upper film near one end of the film clamping roller group and clamps and strips the sheet material; The sheet material forward pushing mechanism is slidably mounted on the chassis and is used to push the sheet material toward the label peeling mechanism and cooperate with the label peeling mechanism to peel the sheet material from the lower film. It has an adsorption guide plate fixed to the peeling bin and used to adsorb the sheet material, and a downward pressing and pushing component slidably mounted on the chassis and used to press the sheet material against the adsorption guide plate and push the sheet material forward.

2. The three-layer sheet stripping machine according to claim 1, characterized in that: The loading mechanism includes a lifting frame and a lifting drive unit for driving the lifting frame to lift and lower. Clamps that can approach each other are arranged on both sides of the lifting frame. A screw rod and a guide rod assembly for pushing the two clamps close to each other is arranged on the lower side of the lifting frame. An L-shaped movable plate with adjustable position is arranged on the lifting frame between the two clamps. It also includes a sensor assembly for detecting the presence or absence of sheet material and the lifting height of the sheet material.

3. The three-layer sheet stripping machine according to claim 1, characterized in that: The label peeling mechanism also includes a peeling knife assembly that cooperates with the film clamping roller group to peel the label from the lower layer of film. The peeling knife assembly includes a label output mounting plate with a slide rail, and the label output mounting plate is slidably provided with a roller moving seat, and the label output mounting plate is provided with a push-back cylinder that drives the roller moving seat to move. One roller of the film clamping roller group is arranged on the roller moving seat; the peeling knife assembly also includes a lifting seat, a label peeling blade arranged on the lifting seat, and upper and lower cylinders that drive the lifting seat to rise and fall. One end of the label peeling blade contacts one end of the adsorption guide plate, and the upper and lower cylinders drive the label peeling blade to press down the lower layer of film, and the push-back cylinder drives the roller moving seat to move, so that the roller installed on the roller moving seat is clamped with the other roller.

4. The three-layer sheet stripping machine according to claim 1, characterized in that: The feeding and film tearing mechanism also includes a guide rail group, a lifting and adsorption component slidably arranged on the guide rail group, and a first belt and a motor drive component arranged on the chassis for driving the lifting and adsorption component to reciprocate along the guide rail group. The film pre-tearing component is arranged on the lifting and adsorption component, and the lifting and adsorption component is driven by the first belt and the motor drive component to move to the feeding mechanism to pick up the material, and then the lifting and adsorption component is driven by the first belt and the motor drive component to move to the label peeling mechanism, and the sheet is placed on the label peeling mechanism. After the film pre-tearing component adsorbs the upper layer of the film of the sheet and flips it up 90 degrees, the lifting and adsorption component lifts the film pre-tearing component, and the sheet forward pushing mechanism pushes the sheet forward, so that the film clamping roller group pulls the lower layer of the film of the sheet, and then the lifting and adsorption component is driven by the first belt and the motor drive component to move to the waste film recovery bin to tear off the upper film.

5. The three-layer sheet stripping machine according to claim 4, characterized in that: The lifting and adsorption assembly includes a slide plate with a guide slider, a longitudinal plate with a vertical guide rail that slides in cooperation with the guide slider, and a driving cylinder arranged on the slide plate and with the output end connected to the longitudinal plate. Suction nozzles are evenly distributed on the longitudinal plate, and the film pre-tearing assembly is arranged on the longitudinal plate.

6. The three-layer sheet stripping machine according to claim 5, characterized in that: The film pre-tearing assembly comprises a connecting frame and a first driving cylinder and a second driving cylinder arranged at the upper and lower ends of the connecting frame, the output end of the first driving cylinder is provided with a C-shaped frame, the bottom of the C-shaped frame is provided with a suction plate which can move up and down and can be turned over, the suction plate is hingedly provided with an auxiliary turning frame fixed to the second driving cylinder, the suction plate is hingedly provided with an auxiliary turning frame fixed to the second driving cylinder, the suction plate is provided with a clamping opening, the bottom of the second driving cylinder is provided with a fixed clamping plate extending to the clamping opening, the output end of the second driving cylinder is provided with an active clamping plate that cooperates with the fixed clamping plate to clamp the upper film, and the side surface on which the fixed clamping plate and the active clamping plate are combined is evenly provided with matching anti-slip stripes. After the suction plate absorbs the upper film, the first driving cylinder drives the C-shaped frame to retreat, so that the C-shaped frame pulls the suction plate. Because one end of the suction plate is hingedly provided with an auxiliary turning frame, the suction plate drives the upper film to turn outward 90 degrees, so that the turned upper film is located between the fixed clamping plate and the active clamping plate, and the second driving cylinder drives the active clamping plate and the fixed clamping plate to clamp the upper film.

7. The three-layer sheet stripping machine according to claim 1, characterized in that: The sheet material forward pushing mechanism also includes a guide rail group arranged on both sides of the chassis, the downward pressing and pushing component is slidably arranged on the guide rail group, and the chassis is provided with a second belt and a motor driving component for driving the downward pressing and pushing component to move back and forth along the guide rail group.

8. The three-layer sheet stripping machine according to claim 7, characterized in that: The downward pressing and pushing assembly includes a slide seat, a downward pressing cylinder arranged on the slide seat, and a pressing plate connected to the output end of the downward pressing cylinder and connected to the slide seat at both ends through a sliding rod. The pressing plate is provided with several buffers, and one end of the buffer is connected to a contact plate for pressing the sheet material.

9. The three-layer sheet stripping machine according to claim 3, characterized in that: The film clamping roller group includes an active roller and a driven roller, and a third belt and a motor assembly for driving the active roller to rotate. The driven roller is arranged on a roller moving seat, and the active roller is arranged on a label mounting plate through a bearing seat. The active roller is evenly provided with a number of annular grooves along the axial direction, and a film discharging guide plate fixed on the label discharging mounting plate is provided between the active roller and the driven roller. The top of the film discharging guide plate is formed with film stripping strips equal in number to the annular grooves and inserted into the annular grooves.

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