PLA laminating device and laminating method for paper tableware

Abstract

The present invention relates to the technical field of paper tableware lamination, and specifically discloses a PLA laminating device and laminating method for paper tableware, the laminating device consisting of a working plate and a laminating box, the working plate being in a strip-shaped structure as a whole, and the laminating box being arranged in the middle position of the working plate; a mold plate is arranged on the working plate, a slide groove is opened on the surface of the working plate, the lower side of the mold plate is installed in the slide groove and moves along the length direction of the slide groove; the interior of the laminating box is hollow, and a laminating cavity is provided; material ports are provided at the openings on both sides of the laminating cavity; a movable plate is provided in the peritoneal cavity, a hot pressing plate is provided on the lower side of the movable plate; a tableware mold core is provided on the upper side of the mold plate; the laminating device provided by the present invention can hot-press and bond the PLA film to the mold in the laminating box, and the whole process is stable and efficient; at the same time, the mold can be installed and disassembled, and can be removed as a whole for subsequent processing without affecting the normal operation of the equipment, thereby ensuring the efficiency of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of paper tableware laminating, and in particular to a PLA laminating device and a laminating method for paper tableware. Background Art

[0002] Tableware refers to non-edible tools that come into direct contact with food during meals, and are used to assist in distributing or taking food. Currently, there are many disposable plastic tableware on the market, which is not good for the environment. There are also some handheld tableware made of degradable materials, among which paper tableware has the advantage of being environmentally friendly and is widely used. However, existing paper tableware usually needs to be coated with degradable PLA during the production process. At this time, a coating device is needed. The coating device generally places a heating device and a pressing device above the paper tableware, so that the heating device heats and softens the film material, and at the same time, the pressing device moves downward to press the film material onto the upper surface of the paper tableware.

[0003] The existing laminating device has the problem of structural assistance and low overall laminating efficiency, which affects the overall processing efficiency. Summary of the Invention

[0004] The object of the present invention is to provide a PLA laminating device and a laminating method for paper tableware to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A PLA laminating device for paper tableware, comprising a working plate, a laminating box, and a hot pressing plate, wherein the working plate is in a strip-shaped structure as a whole, and the laminating box is arranged in the middle position of the working plate; a mold plate is arranged on the working plate, and a slide groove is opened on the surface of the working plate, and the lower side of the mold plate is installed in the slide groove and moves along the length direction of the slide groove; a laminating cavity is arranged in the hollow interior of the laminating box, and feeding ports are arranged at the openings on both sides of the laminating cavity; a movable plate is arranged in the laminating cavity, and a hot pressing plate is arranged on the lower side of the movable plate; a tableware mold core is arranged on the upper side of the mold plate, and the hot pressing plate is heated by an electric heating wire, and the electric heating wire is electrically connected to the controller.

[0006] Preferably, adjustment grooves are symmetrically provided on the groove walls on both sides of the coating box, and screw rods are installed in the adjustment grooves; adjustment blocks are correspondingly provided on both sides of the movable plate, the adjustment blocks are fitted in the adjustment grooves, and the screw rods fit through the adjustment blocks; the screw rods are driven by a motor, and the motor is electrically connected to the controller.

[0007] Preferably, a plurality of card slots are provided on the surface of the mold plate, and a card block is provided on the lower side of the tableware mold core, and the card block is correspondingly engaged with the card slots.

[0008] Preferably, the card slot is a square sink, and the bottom end of the card block is configured as an inverted pyramidal structure.

[0009] Preferably, a slider is provided on the lower side of the mold plate, and the slider is a bar-shaped structure and is engaged with the slide groove; a rack is provided on the wall of the slide groove, and a gear is embedded inside the slider, and the gear emerges from both sides of the slider and meshes with the rack; the gear is driven by a motor, and the motor is electrically connected to the controller.

[0010] Preferably, the gears are spaced apart on both sides of the slider.

[0011] Preferably, a fixing frame is provided on the outside of the movable plate, and the fixing frame is in a square ring structure as a whole and cooperates with the mold plate; the upper end of the fixing frame is installed in the shrinking frame; the shrinking frame is fixed to the wall of the laminating box, and an electric push rod is provided inside the shrinking frame, the electric push rod is connected to the top of the fixing frame, and the electric push rod is electrically connected to the controller.

[0012] Preferably, a buffer member with a semicircular cross-section is provided at the bottom of the fixing frame, and the buffer member is connected to the fixing frame via a spring.

[0013] Preferably, the present invention further provides a laminating method of a PLA laminating device for paper tableware, comprising the following steps:

[0014] S1. Place the tableware to be coated on the tableware mold core, and place the PLA film to be laminated on it;

[0015] S2, the controller controls the motor of the gear to work, the gear rotates and engages with the rack, and the entire mold plate is sent from the feeding port into the laminating cavity;

[0016] S3, the controller controls the motor of the screw to work, the screw rotates and adheres to the adjustment block, and moves the movable plate downward to make the hot pressing plate and the mold plate;

[0017] S4. The controller controls the electric heating wire of the hot pressing plate to operate, and the hot pressing plate heats and presses the tableware and the PLA film;

[0018] S5. After the pressing is completed, the movable plate is folded up, and the mold plate is sent out of the laminating cavity from the feeding port in the other direction;

[0019] S6. Remove the mold plate 3 as a whole and repeat steps S1 to S5.

[0020] Preferably, in step S3, before the movable plate is moved downward, the controller controls the electric push rod in the shrinking frame to shrink, and the fixed frame is pressed against the mold plate to fix the PLA film.

[0021] Compared with the prior art, the beneficial effects of the present invention are: the laminating device provided by the present invention can hot-press and bond the PLA film to the mold in the laminating box, and the whole process is stable and efficient; at the same time, the mold can be installed and disassembled, and can be removed as a whole for subsequent processing without affecting the normal operation of the equipment, thereby ensuring the efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic structural diagram of the film covering box of the present invention;

[0024] Figure 3 This is a schematic structural diagram of the mold plate of the present invention;

[0025] Figure 4 It is a schematic structural diagram of the fixing frame of the present invention;

[0026] Numbers in the figure: 1. Working plate; 11. Slide; 2. Laminating box; 21. Feeding port; 22. Laminating cavity; 23. Adjusting slot; 24. Screw; 3. Mold plate; 31. Tableware mold core; 32. Slider; 33. Slot; 34. Gear; 4. Movable plate; 41. Hot pressing plate; 42. Adjusting block; 5. Fixed frame; 51. Shrinking frame; 52. Electric push rod. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0030] See also Figure 1-4 The present invention provides a technical solution: a PLA laminating device for paper tableware, comprising a working plate 1, a laminating box 2, and a hot pressing plate 41. The working plate 1 is generally in a strip-shaped structure, and the laminating box 2 is arranged in the middle position of the working plate 1; a mold plate 3 is arranged on the working plate 1, and a slide groove 11 is opened on the surface of the working plate 1. The lower side of the mold plate 3 is installed in the slide groove 11 and moves along the length direction of the slide groove 11; a laminating cavity 22 is provided in the hollow interior of the laminating box 2, and feeding ports 21 are provided on both sides of the openings of the laminating cavity 22; a movable plate 4 is provided in the laminating cavity 22, and a hot pressing plate 41 is provided on the lower side of the movable plate 4; a tableware mold core 31 is provided on the upper side of the mold plate 3, and the hot pressing plate 41 is heated by an electric heating wire, and the electric heating wire is electrically connected to a controller.

[0031] Furthermore, adjustment grooves 23 are symmetrically provided on the groove walls on both sides of the coating box 2, and screw rods 24 are installed in the adjustment grooves 23; adjustment blocks 42 are correspondingly provided on both sides of the movable plate 4, and the adjustment blocks 42 are fitted and stuck in the adjustment grooves 23, and the screw rods 24 are fitted and passed through the adjustment blocks 42; the screw rods 24 are driven by a motor, and the motor is electrically connected to the controller.

[0032] Furthermore, a plurality of slots 33 are provided on the surface of the mold plate 3 , and a clamping block is provided on the lower side of the tableware mold core 31 , and the clamping block is correspondingly engaged with the slots 33 .

[0033] Furthermore, the clamping groove 33 is a square recessed groove, and the bottom end of the clamping block is configured as a chamfered pyramid structure.

[0034] Furthermore, a slider 32 is provided on the lower side of the mold plate 3. The slider 32 is a bar-shaped structure and is engaged with the slide groove 11; a rack is provided on the groove wall of the slide groove 11, and a gear 34 is embedded in the slider 32. The gear 34 emerges from both sides of the slider 32 and engages with the rack; the gear 34 is driven by a motor, and the motor is electrically connected to the controller.

[0035] Furthermore, the gears 34 are spaced apart on both sides of the slider 32 .

[0036] Furthermore, a fixing frame 5 is provided on the outside of the movable plate 4. The fixing frame 5 is a square ring structure as a whole and cooperates with the mold plate 3; the upper end of the fixing frame 5 is installed in the shrinking frame 51; the shrinking frame 51 is fixed to the wall of the coating box 2, and an electric push rod 52 is provided inside the shrinking frame 51, and the electric push rod 52 is connected to the top of the fixing frame 5, and the electric push rod 52 is electrically connected to the controller.

[0037] Furthermore, a buffer with a semicircular cross-section is provided at the bottom of the fixing frame 5, and the buffer and the fixing frame 5 are connected via a spring.

[0038] Furthermore, the present invention also provides a laminating method of a PLA laminating device for paper tableware, comprising the following steps:

[0039] S1. Place the tableware to be coated on the tableware mold core 31, and place the PLA film to be laminated thereon;

[0040] S2, the controller controls the motor of the gear 34 to work, the gear 34 rotates and engages with the rack, and the entire mold plate 3 is fed from the feeding port 21 into the laminating cavity 22;

[0041] S3, the controller controls the motor of the screw rod 24 to work, the screw rod 24 rotates and adheres to the adjustment block 42, and the movable plate 4 is moved downward to make the hot pressing plate 41 and the mold plate 3;

[0042] S4. The controller controls the electric heating wire of the hot pressing plate 41 to operate, and the hot pressing plate 41 heats and presses the tableware and the PLA film together;

[0043] S5, after the pressing is completed, the movable plate 4 is folded up, and the mold plate 3 is sent out of the film cavity 22 from the feeding port 21 in the other direction;

[0044] S6. Remove the mold plate 3 as a whole and repeat steps S1 to S5.

[0045] Furthermore, in step S3, before the movable plate 4 is moved downward, the controller controls the electric push rod 52 in the shrinking frame 51 to shrink, and presses the fixing frame 5 onto the mold plate 3 to fix the PLA film.

[0046] Working principle: In actual use, a suitable tableware mold core 31 is selected according to the shape of the tableware. The tableware mold core 31 is clamped in the clamping groove 33 of the mold plate 3 through the clamping block at the bottom. The chamfered cone-shaped structure on the clamping block facilitates the clamping block to be clamped into the clamping groove 33. Then, the slider 32 on the lower side of the mold plate 3 is clamped in the slide groove 11. The tableware to be coated is placed on the tableware mold core 31, and the PLA film to be pressed is placed on it; then the controller controls the motor of the gear 34 to work, and the gear 34 rotates and engages with the rack to feed the entire mold plate 3 from the feed port 21 into the coating cavity 22; after the mold plate 3 is directly below the movable plate 4, the gear 34 stops working, and then the controller controls the electric push rod 52 in the shrinking frame 51 to shrink, pressing the fixed frame 5 onto the mold plate 3, and the PLA film is between the mold plate 3 and the fixed frame 5 to fix the PLA film. The buffer member provided on the lower side of the fixing frame 5 can prevent the PLA film from being damaged due to excessive pressure, and the semicircular bottom of the buffer member can prevent the PLA film from being scratched.

[0047] After the PLA film is secured, the controller controls the motor of screw 24, causing it to rotate and engage with adjustment block 42, moving movable plate 4 downward to align the hot press plate 41 with the mold plate 3. The controller also controls the electric heating wire of hot press plate 41, which heats and presses the tableware and PLA film together. Once pressed together, movable plate 4 is retracted, and mold plate 3 is ejected from laminating chamber 22 through feed port 21 in the opposite direction. The mold 3 is then removed, and the pressed tableware can proceed to the next step. The other position can then be unloaded without interruption, ensuring stable operation of the entire system.

[0048] It is worth noting that the entire device is controlled by a master control button. Since the devices matched with the control button are commonly used devices and belong to existing mature technologies, their electrical connection relationships and specific circuit structures will not be described in detail here.

[0049] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A PLA laminating device for paper tableware, characterized by: The invention comprises a working plate (1), a film coating box (2), and a hot pressing plate (41), wherein the working plate (1) is in a strip-shaped structure as a whole, and the film coating box (2) is arranged in the middle position of the working plate (1); a mold plate (3) is arranged on the working plate (1), and a slide groove (11) is opened on the surface of the working plate (1); the lower side of the mold plate (3) is installed in the slide groove (11) and moves along the length direction of the slide groove (11); a film coating cavity (22) is arranged in the hollow inside of the film coating box (2), and feeding ports (21) are arranged on both sides of the opening of the film coating cavity (22); a movable plate (4) is arranged in the film coating cavity (22), and a hot pressing plate (41) is arranged on the lower side of the movable plate (4); a tableware mold core (31) is arranged on the upper side of the mold plate (3), and the hot pressing plate (41) is heated by an electric heating wire, and the electric heating wire is electrically connected to a controller; Adjustment grooves (23) are symmetrically provided on the groove walls on both sides of the film coating box (2), and screw rods (24) are installed in the adjustment grooves (23); adjustment blocks (42) are correspondingly provided on both sides of the movable plate (4), and the adjustment blocks (42) are fitted in the adjustment grooves (23), and the screw rods (24) are fitted to pass through the adjustment blocks (42); the screw rods (24) are driven by a first motor, and the first motor is electrically connected to a controller; The surface of the mold plate (3) is provided with a plurality of card slots (33), and the lower side of the tableware mold core (31) is provided with a card block, and the card block is correspondingly engaged with the card slots (33); The clamping groove (33) is a square sink, and the bottom end of the clamping block is configured as an inverted prism-shaped structure; A slider (32) is provided on the lower side of the mold plate (3), and the slider (32) is a bar-shaped structure and is correspondingly engaged with the slide groove (11); a rack is provided on the groove wall of the slide groove (11), and a gear (34) is embedded in the slider (32), and the gear (34) emerges from both sides of the slider (32) and meshes with the rack; the gear (34) is driven by a second motor, and the second motor is electrically connected to the controller; The gears (34) are spaced apart on both sides of the slider (32).

2. The PLA laminating device for paper tableware according to claim 1, characterized in that: A fixing frame (5) is provided on the outside of the movable plate (4), and the fixing frame (5) is in a square ring structure as a whole and cooperates with the mold plate (3); the upper end of the fixing frame (5) is installed in the shrinking frame (51); the shrinking frame (51) is fixed to the wall of the laminating box (2), and an electric push rod (52) is provided inside the shrinking frame (51), the electric push rod (52) is connected to the top of the fixing frame (5), and the electric push rod (52) is electrically connected to the controller.

3. The PLA film laminating device for paper tableware according to claim 2, characterized in that: A buffer member with a semicircular cross section is provided at the bottom of the fixing frame (5), and the buffer member and the fixing frame (5) are connected via a spring.

4. The method for laminating a PLA film for paper tableware according to claim 3, characterized in that: The steps include: S1, placing the tableware to be coated on the tableware mold core (31), and placing the PLA film to be pressed thereon; S2, the controller controls the second motor of the gear (34) to operate, and the gear (34) rotates and engages with the rack, so that the entire mold plate (3) is sent from the feeding port (21) into the coating cavity (22); S3, controlling the first motor of the screw rod (24) to work through the controller, so that the screw rod (24) rotates and cooperates with the adjustment block (42), and moves the movable plate (4) downward so that the hot pressing plate (41) contacts the PLA film on the mold plate (3); S4, controlling the electric heating wire of the hot pressing plate (41) to work through the controller, and the hot pressing plate (41) heats the tableware and the PLA film to press them together; S5. After the pressing is completed, the movable plate (4) is folded up, and the mold plate (3) is sent out of the film cavity (22) from the feeding port (21) in the other direction; S6. Remove the mold plate (3) as a whole and repeat steps S1 to S5.

5. The method for laminating a PLA film for paper tableware according to claim 4, characterized in that: In the step S3, before the movable plate (4) is moved downward, the controller controls the electric push rod (52) in the shrinking frame (51) to shrink, and the fixed frame (5) is pressed onto the mold plate (3) to fix the PLA film.

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