Degradable PLA (polylactic acid) coated paper cup forming mold

Abstract

The utility model discloses a degradable PLA (polylactic acid) coated paper cup forming mold, and relates to the technical field of paper cup production. The device comprises a supporting cylinder, the top of the supporting cylinder is rotationally connected with a rotating disc, a plurality of separable molds are arranged at the top of the rotating disc, elastic pushing assemblies are arranged on the two sides of each separable mold, jacking assemblies are arranged at the bottoms of the separable molds, and locking assemblies are arranged at the pushing ends of the elastic pushing assemblies. According to the paper cup separating device, the separating assembly is driven, after the locking assembly unlocks the elastic pushing assembly, the elastic pushing assembly pulls the separable mold outwards and enables the separable mold to be separated, at the moment, a paper cup can be separated from the inner wall of the separable mold, then the jacking assembly jacks the paper cup upwards, and the paper cup can be separated from the inner wall of the separable mold. By means of the arrangement, when the paper cup is demoulded, friction force and obstruction from the inner wall of the separable mould can be avoided, and the risks of local tearing and deformation caused by uneven stress of the paper cup are effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of paper cup production technology, and specifically relates to a biodegradable PLA coated paper cup forming mold. Background Technology

[0002] Driven by the strategic promotion of the "dual carbon" goal and the significant increase in consumers' environmental awareness, biodegradable materials represented by PLA have ushered in a period of rapid development in the disposable packaging field. In the production process of PLA-coated paper cups, the base paper and PLA coating layer are first tightly bonded together through a hot-pressing composite process to form a composite material that combines the flexibility of paper with the water resistance of PLA. Then, the composite material is precisely shaped by processes such as stamping, edge rolling, and bottom sealing using a molding die, and finally, an environmentally friendly paper cup that meets the needs of use is obtained.

[0003] Most existing molds use an ejector pin type demolding structure. When the ejector pin lifts the formed paper cup out of the mold, the low elastic modulus and limited structural toughness of PLA material, as well as the high coefficient of friction between its coating layer and the inner wall surface of the mold, result in a large frictional force on the paper cup as it moves inside the mold. This makes it difficult for the paper cup to be demolded smoothly during the ejector pin lifting process. At the same time, under the combined action of friction and ejection force, the paper cup is prone to local tearing or deformation, which seriously affects the product qualification rate. Utility Model Content

[0004] To address the problem that paper cups are prone to local tearing or deformation when ejected from the mold by a push rod under the combined action of friction and pushing force, this utility model proposes a biodegradable PLA coated paper cup forming mold to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a biodegradable PLA coated paper cup forming mold, including a support cylinder, a turntable rotatably connected to the top of the support cylinder, a plurality of separable molds arranged on the top of the turntable, elastic pushing components arranged on both sides of the separable molds, a lifting component arranged at the bottom of the separable molds, a locking component arranged at the pushing end of the elastic pushing component, and a separation component arranged on the outer side of the support cylinder corresponding to the elastic pushing component, the lifting component and the locking component;

[0007] By driving the separation component, the locking component is released from locking the elastic pushing component. Then, the elastic pushing component is squeezed by the separation component to drive the separable mold to separate. Finally, the lifting component is lifted by the separation component to push out the paper cup formed inside the separable mold.

[0008] Furthermore, the separable mold includes a movable groove, and multiple movable grooves are arranged in a circular array on the top circumference of the turntable. A left mold and a right mold are movably connected inside the movable groove. Movable plates are fixedly connected to the outer sides of both the left mold and the right mold. Several support frames are fixedly installed at the bottom of the turntable corresponding to the movable groove, and the movable plates are movably connected to the support frames.

[0009] Furthermore, the elastic pushing component includes a wedge plate, which is provided on both sides of the support frame. A plurality of the movable plates are fixedly connected to the corresponding wedge plate. A T-shaped fixing rod is fixedly connected to the outer side of the support frame, and a pushing spring is fixedly connected between the top end of the T-shaped fixing rod and the outer side of the wedge plate.

[0010] Furthermore, the lifting assembly includes a storage groove, which is formed at the bottom of the inner wall of the left mold and the right mold. A lifting plate is movably connected inside the storage groove. A T-shaped lifting rod is fixedly connected to the bottom of the lifting plate. The bottom end of the T-shaped lifting rod passes through the support frame. A return spring is fixedly connected between the bottom end of the T-shaped lifting rod and the bottom of the support frame.

[0011] Furthermore, the locking assembly includes a through groove, which is formed on the outer side of the wedge plate and extends through the support frame. A limiting plate is movably connected inside the through groove. A connecting rod is fixedly connected to one side of the limiting plate, and a connecting block is fixedly connected to one end of the connecting rod. A limiting block is fixedly connected to the bottom of the inner wall of the through groove corresponding to the limiting plate. An L-shaped magnetic block is fixedly connected to the inner side of the support frame, and a guide rod is fixedly connected to the inner wall of the L-shaped magnetic block. The connecting block is movably connected to the guide rod.

[0012] Furthermore, the inner wall of the storage slot is provided with a locking groove, and a locking disc is movably connected inside the locking groove. The locking disc is fixedly connected to the lifting disc.

[0013] Furthermore, the separation assembly includes a mounting plate, which is fixedly connected to the outside of the support cylinder. A hydraulic cylinder is fixedly installed at the bottom of the mounting plate. The output end of the hydraulic cylinder passes through the mounting plate and is fixedly connected to an extrusion frame. The top of the extrusion frame is inclined. A magnetic push rod is fixedly connected to the bottom of the inner wall of the extrusion frame corresponding to the connecting block. A T-shaped push rod is fixedly connected to the top of the inner wall of the extrusion frame.

[0014] Furthermore, a drive motor is fixedly installed on the top of the inner wall of the support cylinder, the output end of the drive motor passes through the support cylinder and is fixedly connected to the turntable, and several heat dissipation grooves are opened on the outer side of the support cylinder.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model drives the separation component so that after the locking component releases the locking of the elastic pushing component, the elastic pushing component pulls the separable mold outward and separates it. At this time, the paper cup can separate from the inner wall of the separable mold. Then, the lifting component lifts the paper cup upward. The above settings can avoid friction and obstruction from the inner wall of the separable mold when demolding the paper cup, effectively reducing the risk of local tearing and deformation of the paper cup due to uneven force, and greatly improving the integrity and yield of paper cup demolding.

[0017] 2. This utility model uses a hydraulic cylinder to push the extrusion frame. As the extrusion frame moves upward, the magnetic push rod, the extrusion frame, and the T-shaped push rod can push or squeeze the corresponding connecting block, wedge plate, and T-shaped lifting rod in sequence. Throughout the process, the extrusion frame only needs to be driven by the hydraulic cylinder to move in one direction to complete multiple actions such as locking release, mold separation, and paper cup demolding in sequence, realizing orderly linkage between structures, simplifying the operation process, and improving work efficiency.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the external outline structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the support cylinder of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the detachable component of this utility model;

[0023] Figure 4 This is a schematic diagram of the elastic pushing component structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the separable mold structure of this utility model;

[0025] Figure 6 For the present utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Support cylinder; 2. Turntable; 3. Separable mold; 301. Moving groove; 302. Left mold; 303. Right mold; 304. Moving plate; 305. Support frame; 4. Elastic pushing assembly; 401. Wedge plate; 402. T-shaped fixing rod; 403. Push spring; 5. Lifting assembly; 501. Storage groove; 502. Lifting plate; 503. T-shaped lifting rod; 504. Return spring; 6. Locking mechanism Components; 601, through slot; 602, limiting plate; 603, connecting rod; 604, connecting block; 605, limiting block; 606, L-shaped magnetic block; 607, guide rod; 608, locking slot; 609, locking plate; 7, separation component; 701, mounting plate; 702, hydraulic cylinder; 703, extrusion frame; 704, magnetic push rod; 705, T-shaped push rod; 8, drive motor; 9, heat dissipation slot. Detailed Implementation

[0028] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0029] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0030] Please see Figures 1-6 As shown, this utility model is a biodegradable PLA coated paper cup forming mold, including a support cylinder 1, a turntable 2 rotatably connected to the top of the support cylinder 1, a plurality of separable molds 3 arranged on the top of the turntable 2, elastic pushing components 4 arranged on both sides of the separable molds 3, a lifting component 5 arranged at the bottom of the separable molds 3, a locking component 6 arranged at the pushing end of the elastic pushing component 4, and a separation component 7 arranged on the outer side of the support cylinder 1 corresponding to the elastic pushing component 4, the lifting component 5 and the locking component 6;

[0031] By driving the separation component 7, the locking component 6 is released from locking the elastic pushing component 4. Then, the elastic pushing component 4 is squeezed by the separation component 7 to drive the separable mold 3 to separate. Finally, the lifting component 5 is lifted by the separation component 7 to push out the paper cup formed inside the separable mold 3.

[0032] When the turntable 2 moves the separable mold 3 containing the formed paper cup to the upper side of the separation component 7, it drives the separation component 7. At this time, the moving end of the separation component 7 can sequentially contact the locking component 6, the elastic pushing component 4, and the lifting component 5, thereby causing the locking component 6 to release the locking of the elastic pushing component 4. Then, the elastic pushing component 4 pulls the separable mold 3, thereby separating the inner wall of the separable mold 3 from the formed paper cup. Then, the lifting component 5 lifts the paper cup upward, so that the paper cup can be moved out from the inside of the separable mold 3.

[0033] By driving the separation component 7, the locking component 6 releases the locking of the elastic pushing component 4. The elastic pushing component 4 then pulls the separable mold 3 outward and separates it. At this time, the paper cup can separate from the inner wall of the separable mold 3. Then, the lifting component 5 lifts the paper cup upward. The above settings can avoid friction and obstruction from the inner wall of the separable mold 3 when demolding the paper cup, effectively reducing the risk of local tearing and deformation of the paper cup due to uneven force, and greatly improving the integrity and yield of the paper cup demolding.

[0034] In one embodiment, the separable mold 3 includes a movable groove 301, which is provided in a circular array on the top of the turntable 2. A left mold 302 and a right mold 303 are movably connected inside the movable groove 301. Movable plates 304 are fixedly connected to the outer sides of both the left mold 302 and the right mold 303. Several support frames 305 are fixedly installed at the bottom of the turntable 2 corresponding to the movable groove 301. The movable plates 304 are movably connected to the support frames 305.

[0035] By pulling the two movable plates 304, the two movable plates 304 can drive the corresponding left mold 302 and right mold 303 to move to both sides, so that the left mold 302 and right mold 303 can be separated. At the same time, the paper cup is also separated from the inner wall of the left mold 302 and right mold 303, so that the paper cup can move out of the inside of the left mold 302 and right mold 303 smoothly. The support frame 305 can guide the left mold 302 and right mold 303 through the movable plates 304, so that the stability of the left mold 302 and right mold 303 during movement can be guaranteed.

[0036] In one embodiment, the elastic pushing component 4 includes a wedge plate 401, which is provided on both sides of the support frame 305. A plurality of movable plates 304 are fixedly connected to the corresponding wedge plate 401. A T-shaped fixing rod 402 is fixedly connected to the outer side of the support frame 305. A pushing spring 403 is fixedly connected between the top end of the T-shaped fixing rod 402 and the outer side of the wedge plate 401.

[0037] The push spring 403 can push the wedge plate 401, thereby causing the wedge plate 401 to move under the guidance of the T-shaped fixing rod 402 and push the left mold 302 and right mold 303 through the corresponding moving plate 304. When the wedge plate 401 contacts the outer side of the support frame 305, the left mold 302 and right mold 303 can contact each other. In the above arrangement, when the separation component 7 no longer squeezes the wedge plate 401, the left mold 302 and right mold 303 can automatically reset.

[0038] In one embodiment, the lifting assembly 5 includes a receiving groove 501, which is formed at the bottom of the inner wall of the left mold 302 and the right mold 303. A lifting plate 502 is movably connected inside the receiving groove 501. A T-shaped lifting rod 503 is fixedly connected to the bottom of the lifting plate 502. The bottom end of the T-shaped lifting rod 503 passes through the support frame 305. A return spring 504 is fixedly connected between the bottom end of the T-shaped lifting rod 503 and the bottom of the support frame 305.

[0039] By pushing the T-shaped lifting rod 503 upward, the T-shaped lifting rod 503 can compress the return spring 504. At the same time, the T-shaped lifting rod 503 can continuously lift the lifting plate 502 upward, so that the lifting plate 502 can move out from the inside of the storage groove 501 and open to lift the paper cups inside the left mold 302 and right mold 303. When the thrust on the T-shaped lifting rod 503 disappears, under the elastic force of the return spring 504, the T-shaped lifting rod 503 can once again drive the lifting plate 502 into the inside of the storage groove 501.

[0040] In one embodiment, the locking component 6 includes a through groove 601 located on the outer side of the wedge plate 401 and extending through the support frame 305. A limiting disk 602 is movably connected inside the through groove 601. A connecting rod 603 is fixedly connected to one side of the limiting disk 602, and a connecting block 604 is fixedly connected to one end of the connecting rod 603. A limiting block 605 is fixedly connected to the bottom of the inner wall of the through groove 601 corresponding to the limiting disk 602. An L-shaped magnetic block 606 is fixedly connected to the inner side of the support frame 305, and a guide rod 607 is fixedly connected to the inner wall of the L-shaped magnetic block 606. The connecting block 604 is movably connected to the guide rod 607.

[0041] The L-shaped magnetic block 606 can attract the connecting block 604, so that the connecting block 604 can drive the limiting plate 602 to move to the outside of the limiting block 605 through the connecting rod 603. At this time, the limiting plate 602 can limit the wedge plate 401 through the limiting block 605, so that the left mold 302 and the right mold 303 will not separate when subjected to greater pressure. At the same time, the L-shaped magnetic block 606 can attract the connecting block 604, so that the connecting block 604 will not move out of the L-shaped magnetic block 606 without the influence of a large external force, thus ensuring the overall stability of the mold during operation.

[0042] In one embodiment, for the aforementioned storage slot 501, a locking slot 608 is provided on the inner wall of the storage slot 501, and a locking disc 609 is movably connected inside the locking slot 608, and the locking disc 609 is fixedly connected to the lifting disc 502.

[0043] When the left mold 302 and the right mold 303 separate, the locking groove 608 can move out from the inside of the locking plate 609. This setting allows the lifting plate 502 to move out from the inside of the storage groove 501 normally. In the above setting, the two closed left molds 302 and right molds 303 lock the lifting plate 502 through the locking groove 608 and the locking plate 609. At the same time, the limiting plate 602 can lock the closed left molds 302 and right molds 303 through the limiting block 605, so that the lifting plate 502 will not move out from the inside of the storage groove 501 at will when the mold is used.

[0044] In one embodiment, the separation component 7 includes a mounting plate 701, which is fixedly connected to the outside of the support cylinder 1. A hydraulic cylinder 702 is fixedly mounted on the bottom of the mounting plate 701. The output end of the hydraulic cylinder 702 passes through the mounting plate 701 and is fixedly connected to an extrusion frame 703. The top of the extrusion frame 703 is inclined. A magnetic push rod 704 is fixedly connected to the bottom of the inner wall of the extrusion frame 703 corresponding to the connecting block 604. A T-shaped push rod 705 is fixedly connected to the top of the inner wall of the extrusion frame 703.

[0045] By driving the hydraulic cylinder 702, the extrusion frame 703 can move the magnetic push rod 704 and the T-shaped push rod 705 upward. As the extrusion frame 703 moves upward, the magnetic push rod 704 can lift the connecting block 604 first, so that the connecting block 604 can drive the limiting plate 602 to move inside the through groove 601 through the connecting rod 603, and the limiting plate 602 and the limiting block 605 will separate. Then, the extrusion frame 703 can squeeze and push the two wedge plates 401 through the inclined surface, so that the two wedge plates 401 can drive the left mold 302 and the right mold 303 to move through the corresponding moving plate 304. When the left mold 302 and the right mold 303 separate, the T-shaped push rod 705 can lift the T-shaped lifting rod 503, so that the lifting plate 502 can lift the paper cup inside the left mold 302 and the right mold 303.

[0046] In one embodiment, for the support cylinder 1, a drive motor 8 is fixedly installed on the top of the inner wall of the support cylinder 1, the output end of the drive motor 8 passes through the support cylinder 1 and is fixedly connected to the turntable 2, and a plurality of heat dissipation grooves 9 are opened on the outer side of the support cylinder 1.

[0047] The drive motor 8 drives the turntable 2 to rotate on the top of the support cylinder 1, so that the turntable 2 can continuously rotate the left mold 302 and right mold 303 containing the formed paper cups to the upper side of the extrusion frame 703.

[0048] Through the above technical solution, 1. By driving the separating component 7, the locking component 6 releases the locking of the elastic pushing component 4, and the elastic pushing component 4 pulls the separable mold 3 outward and separates it. At this time, the paper cup can separate from the inner wall of the separable mold 3. Then, the lifting component 5 lifts the paper cup upward. The above setting avoids friction and obstruction from the inner wall of the separable mold 3 when demolding the paper cup, effectively reducing the risk of local tearing and deformation of the paper cup due to uneven force, and greatly improving the integrity of the paper cup demolding. 1. Yield rate; 2. The extrusion frame 703 is pushed by the hydraulic cylinder 702. As the extrusion frame 703 moves upward, the magnetic push rod 704, the extrusion frame 703 and the T-shaped push rod 705 can push or squeeze the corresponding connecting block 604, wedge plate 401 and T-shaped lifting rod 503 in sequence. In the whole process, the extrusion frame 703 only needs to be driven by the hydraulic cylinder 702 to move in one direction, so as to complete the multiple actions of locking release, mold separation and paper cup demolding in sequence, realize the orderly linkage between structures, simplify the operation process and improve work efficiency.

[0049] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A biodegradable PLA coated paper cup forming mold, comprising a support cylinder (1), characterized in that, The top of the support cylinder (1) is rotatably connected to a turntable (2), and the top of the turntable (2) is provided with several separable molds (3). The separable molds (3) are provided with elastic pushing components (4) on both sides, and the bottom of the separable molds (3) is provided with a lifting component (5). The pushing end of the elastic pushing component (4) is provided with a locking component (6). The outer side of the support cylinder (1) is provided with a separation component (7) corresponding to the elastic pushing component (4), the lifting component (5) and the locking component (6). By driving the separation component (7), the locking component (6) is released from locking the elastic pushing component (4). Then, the elastic pushing component (4) is squeezed by the separation component (7) to drive the separable mold (3) to separate. Finally, the lifting component (5) is lifted by the separation component (7) to push out the paper cup formed inside the separable mold (3).

2. The biodegradable PLA coated paper cup forming mold according to claim 1, characterized in that, The separable mold (3) includes a movable groove (301), which is provided in a circular array on the top of the turntable (2). The movable groove (301) is movably connected to the left mold (302) and the right mold (303). The left mold (302) and the right mold (303) are fixedly connected to the outside of the left mold (302) and the right mold (303). The bottom of the turntable (2) is fixedly installed with several support frames (305) corresponding to the movable groove (301). The movable plate (304) is movably connected to the support frame (305).

3. The biodegradable PLA coated paper cup forming mold according to claim 2, characterized in that, The elastic pushing component (4) includes a wedge plate (401), which is provided on both sides of the support frame (305). Several moving plates (304) are fixedly connected to the corresponding wedge plate (401). A T-shaped fixing rod (402) is fixedly connected to the outside of the support frame (305). A pushing spring (403) is fixedly connected between the top of the T-shaped fixing rod (402) and the outside of the wedge plate (401).

4. The biodegradable PLA coated paper cup forming mold according to claim 3, characterized in that, The lifting assembly (5) includes a storage groove (501), which is located at the bottom of the inner wall of the left mold (302) and the right mold (303). The storage groove (501) is movably connected to the inside of the storage groove (501). A T-shaped lifting rod (503) is fixedly connected to the bottom of the lifting plate (502). The bottom end of the T-shaped lifting rod (503) passes through the support frame (305). A return spring (504) is fixedly connected between the bottom end of the T-shaped lifting rod (503) and the bottom of the support frame (305).

5. The biodegradable PLA coated paper cup forming mold according to claim 4, characterized in that, The locking assembly (6) includes a through groove (601) which is located on the outside of the wedge plate (401). The through groove (601) passes through the support frame (305). A limiting plate (602) is movably connected inside the through groove (601). A connecting rod (603) is fixedly connected to one side of the limiting plate (602). A connecting block (604) is fixedly connected to one end of the connecting rod (603). A limiting block (605) is fixedly connected to the bottom of the inner wall of the through groove (601) corresponding to the limiting plate (602). An L-shaped magnetic block (606) is fixedly connected to the inner side of the support frame (305). A guide rod (607) is fixedly connected to the inner wall of the L-shaped magnetic block (606). The connecting block (604) is movably connected to the guide rod (607).

6. The biodegradable PLA coated paper cup forming mold according to claim 5, characterized in that, The inner wall of the storage slot (501) is provided with a locking slot (608), and a locking disc (609) is movably connected inside the locking slot (608). The locking disc (609) is fixedly connected to the lifting disc (502).

7. The biodegradable PLA coated paper cup forming mold according to claim 5, characterized in that, The separation component (7) includes a mounting plate (701), which is fixedly connected to the outside of the support cylinder (1). A hydraulic cylinder (702) is fixedly installed at the bottom of the mounting plate (701). The output end of the hydraulic cylinder (702) passes through the mounting plate (701) and is fixedly connected to an extrusion frame (703). The top of the extrusion frame (703) is inclined. A magnetic push rod (704) is fixedly connected to the bottom of the inner wall of the extrusion frame (703) corresponding to the connecting block (604). A T-shaped push rod (705) is fixedly connected to the top of the inner wall of the extrusion frame (703).

8. The biodegradable PLA coated paper cup forming mold according to claim 1, characterized in that, A drive motor (8) is fixedly installed on the top of the inner wall of the support cylinder (1). The output end of the drive motor (8) passes through the support cylinder (1) and is fixedly connected to the turntable (2). Several heat dissipation grooves (9) are opened on the outer side of the support cylinder (1).

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