A thermoforming device and method for a biodegradable hot coffee cup cover mechanism

Abstract

The invention discloses a thermoforming device and method for a biodegradable hot coffee cup cover mechanism, which relates to the technical field of compression molding processing, and comprises a support frame, one end of which is provided with an unwinding frame, and further comprises: a movable support frame, the bottom of which is provided with a movable component for driving the movable support frame to move horizontally, and two groups of mold components for compression molding of a film are arranged inside the movable support frame; the film is separated from the mold by separating the mold component and starting a stripping component; when the next section is stamped, the movable support frame is driven to move by the movable component, and the used mold component is moved to the cleaning component, so that the cleaning component cleans the mold component, and another group of mold components continues to be stamped, thereby ensuring the working rate of the thermoforming, and also ensuring that after the mold component is stamped, no residue will appear in the inner mold to affect the subsequent stamping.

Description

Technical Field

[0001] The present invention relates to the technical field of hot pressing and forming processing, and in particular to a hot forming device and method for a biodegradable hot coffee cup cover mechanism. Background Art

[0002] At present, the forming and manufacturing method of plastic products (PS, PET, PVC, etc.) for cup lids such as beverage cup lids, coffee cup lids, and medicine and food trays is as follows: first, a plastic coil is unwound by an unwinding device to form a plastic sheet; the plastic sheet is then heated and softened by a heating device, and then processed into a cup lid-shaped plastic sheet by a concave mold forming device (this process is completed by a blister thermoforming machine); then, a single cup lid semi-finished product is made by a manual punching device; then, the cup lid semi-finished product is punched by a punching machine (usually one or two holes) to make a finished cup lid.

[0003] A plastic cup lid thermoforming machine disclosed in the patent application with reference publication number CN104441587B includes a frame, a conveying unit for conveying plastic sheets, a power drive unit for driving each device to work, and a panel control unit for uniformly regulating each device; the conveying unit is sequentially provided with: a reeling device for reeling the plastic coil to form a plastic sheet; an oven heating device for heating and softening the plastic sheet; a mold forming device for processing the plastic sheet into a cup lid-shaped plastic film; a punching device for punching the cup lid-shaped plastic film; a blanking device for making the punched cup lid-shaped plastic film into a single cup lid product; and a waste reeling device for reeling the remaining cup lid-shaped plastic film waste. The invention has a simple structure and is easy to operate, and the transmission of the plastic mold sheets between the devices is automatically completed by the waste reeling device.

[0004] When the stamping assembly is hot-pressing the mold, due to the stickiness of the plastic, there may be residues in the upper and lower molds, so the inside of the mold needs to be cleaned to prevent the residues from affecting the quality of subsequent production. However, if manual inspection is required every time, it is too cumbersome. However, if the cleaning is paused every time, the production efficiency of the cup lid will be seriously affected. Moreover, when the mold is separated from the film after molding, if the upper and lower molds are forced to separate from the film, the film may be easily damaged.

[0005] Therefore, it is necessary to provide a thermoforming device and method for a biodegradable hot coffee cup cover mechanism to solve the above technical problems. Summary of the invention

[0006] The object of the present invention is to provide a thermoforming device and method for a biodegradable hot coffee cup cover mechanism to solve the defects of the prior art mentioned in the above background technology.

[0007] Based on the above ideas, the present invention provides the following technical solutions: a thermoforming device for a biodegradable hot coffee cup cover mechanism, comprising a support frame, one end of which is provided with an unwinding frame, and further comprising:

[0008] A movable support frame, wherein a movable assembly for driving the movable support frame to move horizontally is disposed at the bottom of the movable support frame, and two sets of mold assemblies for molding the film are disposed inside the movable support frame;

[0009] Support plates are fixedly connected to both sides of the top of the support frame, and the two support plates are respectively arranged at both ends of the movable support frame, and cleaning components are arranged on opposite sides of the two support plates. When the movable component drives the movable support frame to move horizontally, the cleaning components clean the two groups of mold components alternately;

[0010] The top of the support frame is fixedly connected to two mounting brackets, both of which pass through the interior of the movable support frame. A peeling component is provided between the two mounting brackets to separate the formed film from the mold component.

[0011] As a further solution of the present invention: the mold assembly includes an upper mold and a lower mold that are relatively arranged, and a plurality of hydraulic telescopic rods are fixedly connected between the upper mold and the lower mold and the movable support frame.

[0012] As a further solution of the present invention: the cleaning assembly includes a fixed plate fixedly connected to one side of the supporting plate, a plurality of circular through grooves are opened on the outer side of the fixed plate, two relative rotating plates are arranged inside the plurality of circular through grooves, the two rotating plates are rotatably connected to the fixed plate, and cleaning parts are arranged on the outer sides of the two rotating plates.

[0013] As a further solution of the present invention: the cleaning assembly also includes a plurality of outer gear rings, which are respectively arranged on the outsides of the plurality of rotating plates, and the plurality of outer gear rings are rotatably connected to the fixed plate, and a third gear is meshedly connected between the plurality of outer gear rings, and the third gear is rotatably connected to the fixed plate, wherein a second gear is meshedly connected to the outside of one of the outer gear rings, and the second gear is rotatably connected to the fixed plate, a second motor is fixedly connected to the outside of the support plate, and an output shaft of the second motor passes through the fixed plate and is fixedly connected to the two second gears.

[0014] As a further solution of the present invention: the cleaning part includes a plurality of L-shaped fixed plates fixedly connected to the top of the outer gear ring and a fixed through-tube located at the center of the rotating plate, a rotating through-tube is arranged inside the plurality of L-shaped fixed plates, the rotating through-tube and the fixed through-tube both penetrate the rotating plate and extend to the inside of the circular through-groove, a movable cylinder is sleeved on the outside of the plurality of rotating through-tubes and the fixed through-tubes, a cleaning brush head is fixedly connected on the outside of the plurality of movable cylinders, a spring is sleeved on the outside of the plurality of rotating through-tubes and the fixed through-tubes, a first gear is fixedly connected on the outside of the plurality of rotating through-tubes, a fixed inner gear ring is fixedly connected on the outside of the fixed plate, the outermost first gear is meshed with the fixed inner gear ring, a slide groove is arranged on the outside of the plurality of rotating through-tubes, a protrusion is fixedly connected on the inside of the plurality of movable cylinders, the protrusion extends to the inside of the slide groove and slides with the rotating through-tube.

[0015] As a further solution of the present invention: the outer sides of the two support plates are fixedly connected with an air suction pump, the air suction end of the air suction pump is fixedly connected with an air suction pipe, the outer side of the air suction pipe is fixedly connected with multiple branch pipes, the multiple branch pipes respectively extend to the inside of the circular through groove, and are used to absorb dust after cleaning the mold assembly.

[0016] As a further solution of the present invention: the stripping assembly includes a sliding block arranged on one of the mounting brackets and a moving block on the other mounting bracket, the sliding block is fixedly connected with a fixed shaft inside, two rotating shafts are sleeved on the outside of the fixed shaft, the two rotating shafts are fixedly connected to the fixed shaft through a clockwork spring, thin ropes are wrapped and fixed on the outside of the two rotating shafts, the two thin ropes are fixedly connected to the moving block, the two mounting brackets are fixedly connected with connecting plates on the outside, the top of the connecting plates are provided with serrated grooves, and are tightly fitted with the thin ropes, and the two thin ropes are respectively arranged on the upper and lower sides of the film.

[0017] As a further solution of the present invention: the stripping assembly includes a second screw rod arranged on two mounting brackets, the two second screw rods respectively penetrate the sliding block and the moving block and are connected to the sliding block and the moving block through a ball nut pair, the second screw rod is rotatably connected to the mounting bracket, a third motor is fixedly connected to the outside of the mounting bracket, the output shaft of the third motor is fixedly connected to the second screw rod, a limiting plate is fixedly connected to the outside of the two mounting brackets, and the two mounting brackets are slidably connected to the sliding block and the moving block respectively.

[0018] As a further solution of the present invention: a heating device for heating the film is fixedly connected to the top of the support frame, a cutting device for cutting the formed cup lids is arranged on one side of the movable support frame, and a winding device for winding the waste film and a conveying device for conveying the cup lids are fixedly connected to the top of the support frame.

[0019] A method for thermoforming a biodegradable hot coffee cup cover mechanism is also provided, comprising the following steps:

[0020] Step 1: The film on the unwinding frame passes through the heating device, the mold assembly on the movable support frame and the cutting device in sequence, and is finally fixedly connected to the outside of the winding device;

[0021] Step 2: When the film is rolled up by the winding device, the heating device heats and softens the film, and then the cup cover is molded by punching through one set of mold assemblies;

[0022] Step 3: After the cup cover is formed, the mold assembly is separated and the peeling assembly is started to separate the film from the mold;

[0023] Step 4: When stamping the next section, the moving support frame is driven by the moving assembly to move the used mold assembly to the cleaning assembly, so that the cleaning assembly cleans the mold assembly and another set of mold assemblies continues to be stamped.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The mold assembly is separated and the stripping assembly is started to separate the film from the mold; when the next section is stamped, the moving assembly drives the moving support frame to move, and the used mold assembly is moved to the cleaning assembly, so that the cleaning assembly cleans the mold assembly and another set of mold assemblies continues to be stamped, thereby ensuring the working rate of hot forming, and also ensuring that after the mold assembly is stamped, there will be no residue in the inner mold to affect the subsequent stamping.

[0026] 2. The L-shaped fixed plate drives multiple rotating tubes to move in a circle around the center of the rotating plate. At this time, the first gear on the outermost side is meshed with the fixed inner gear ring, and then the multiple first gears are transmitted to make the rotating tube rotate. When the rotating tube rotates, the moving cylinder can move up and down and rotate through the cooperation of the protrusion and the slide groove, so as to achieve the purpose of fully cleaning the outer gear ring and the L-shaped fixed plate, ensuring that in the process of stamping and forming the film, the adhesion to the inside of the mold during separation will not affect the subsequent production.

[0027] 3. In this solution, the rotating through pipe and the moving cylinder are arranged to be connected. When the cleaning brush head is used for cleaning, suction is generated to collect the cleaned waste into the circular through groove, and the cleaned waste is sucked into the suction pipe through the branch pipe for discharge, so as to prevent the cleaned waste from contaminating the film on the outside of the upper mold and the lower mold.

[0028] 4. A thin rope is inserted into the gap between the film and the mold to increase the space of the gap. In order to prevent the thin rope from damaging the formed cup cover, a clockwork spring is used to fix the thin rope between the rotating shaft and the fixed shaft so that the thin rope has a certain extensibility. The thin rope extends to the outside of the formed cup cover and moves to separate the cup cover from the mold. At the same time, a connecting plate is fixedly connected to the outside of the mounting bracket. A serrated groove is arranged on the connecting plate. When the thin rope moves, it contacts the serrated groove on the connecting plate, so that the thin rope has a certain vibration, thereby further improving the separation effect of the thin rope on the film and the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of the mobile support frame and the support plate of the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the mold assembly of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of the fixing plate of the present invention;

[0034] Figure 5 It is a schematic diagram of the structure of the suction pipe and the fixing plate of the present invention;

[0035] Figure 6 It is a schematic diagram of the structure of the fixed plate and the rotating plate of the present invention;

[0036] Figure 7 It is a schematic diagram of the structure of the outer gear ring and the third gear of the present invention;

[0037] Figure 8 It is a schematic diagram of the structure of the cleaning member of the present invention;

[0038] Fig. 9 It is a schematic diagram of the cross-sectional structure of the movable cylinder of the present invention;

[0039] Fig.10 The present invention Fig. 9 A schematic diagram of the enlarged structure of part A;

[0040] Fig.11 It is a schematic diagram of the structure of the stripping assembly of the present invention;

[0041] Fig.12 It is a schematic diagram of the second screw rod structure of the present invention;

[0042] Fig.13 The present invention Fig.12 Schematic diagram of the enlarged structure of part B.

[0043] In the figure: 1, support frame; 2, heating device; 3, mobile support frame; 301, upper mold; 302, lower mold; 303, hydraulic telescopic rod; 401, first screw rod; 403, sliding seat; 404, first motor; 5, support plate; 501, fixed plate; 502, circular through groove; 503, rotating plate; 504, suction pipe; 506, suction pump; 61, fixed through pipe; 601, outer gear ring; 602, L-shaped fixed plate; 603, rotating through pipe; 604, moving cylinder; 6041, bump; 605, cleaning brush head; 606, first gear; 607, fixed inner gear ring; 608, second gear; 6081, spring; 609, second motor; 610, third gear; 7, mounting bracket; 701, sliding block; 702, moving block; 703, rotating shaft; 704, fixed shaft; 705, thin rope; 706, connecting plate; 801, second screw rod; 802, third motor; 803, limit plate; 9, unwinding rack; 10, cutting device; 11, winding device; 12, conveying device. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] like Figures 1 to 10 As shown, a thermoforming device for a biodegradable hot coffee cup cover mechanism also includes the following embodiments;

[0046] Embodiment 1: comprising a support frame 1, one end of which is provided with an unwinding frame 9, and further comprising:

[0047] A movable support frame 3, wherein a movable assembly for driving the movable support frame 3 to move horizontally is disposed at the bottom of the movable support frame 3, and two sets of mold assemblies for molding the film are disposed inside the movable support frame 3;

[0048] Support plates 5 are fixedly connected to both sides of the top of the support frame 1. The two support plates 5 are respectively arranged at both ends of the movable support frame 3. Cleaning components are arranged on opposite sides of the two support plates 5. When the movable component drives the movable support frame 3 to move horizontally, the cleaning components clean the two groups of mold components alternately.

[0049] Two mounting brackets 7 are fixedly connected to the top of the support frame 1. Both mounting brackets 7 pass through the interior of the movable support frame 3. A peeling assembly is provided between the two mounting brackets 7 to separate the formed film from the mold assembly.

[0050] A heating device 2 for heating the film is fixedly connected to the top of the support frame 1. The heating device 2 can adopt existing heating methods, such as an electric heating plate or a heating lamp. A cutting device 10 for cutting the formed cup lids is arranged on one side of the movable support frame 3. A winding device 11 for winding the waste film and a conveying device 12 for conveying the cup lids are fixedly connected to the top of the support frame 1.

[0051] During the specific implementation, the film on the unwinding rack 9 is sequentially passed through the heating device 2, the mold assembly on the movable support frame 3 and the cutting device 10, and finally fixedly connected to the outside of the winding device 11; when the winding device 11 winds the film, the heating device 2 heats and softens the film, and then the cup cover is molded by punching through one group of mold assemblies; after the cup cover is formed, the mold assembly is separated and the peeling assembly is started to separate the film from the mold; when the next section is punched, the movable support frame 3 is driven to move by the moving assembly, and the used mold assembly is moved to the cleaning assembly, so that the cleaning assembly cleans the mold assembly, and another group of mold assemblies continue to punch, thereby ensuring the working rate of the hot forming, and also ensuring that after the punching of the mold assembly, there will be no residue in the inner mold that affects the subsequent punching.

[0052] In this embodiment, the mold assembly includes an upper mold 301 and a lower mold 302 that are arranged opposite to each other. A plurality of hydraulic telescopic rods 303 are fixedly connected between the upper mold 301 and the lower mold 302 and the movable support frame 3 .

[0053] During the specific implementation, by starting the hydraulic telescopic rod 303 on the upper mold 301 and the lower mold 302, the two upper molds 301 and the lower mold 302 are used to extrude and mold the heated and softened film. Exhaust holes and a fan can also be set on the upper mold 301 to press the film onto the surface of the moving block 702 through the exhaust holes, and cooling water is set inside the moving block 702 to accelerate the cooling of the cup lid during forming.

[0054] Embodiment 2: The cleaning assembly includes a fixed plate 501 fixedly connected to one side of the support plate 5, a plurality of circular through grooves 502 are provided on the outer side of the fixed plate 501, two opposite rotating plates 503 are arranged inside the plurality of circular through grooves 502, the two rotating plates 503 are both rotatably connected to the fixed plate 501, and cleaning parts are arranged on the outer sides of the two rotating plates 503.

[0055] The cleaning assembly also includes a plurality of outer gear rings 601, which are respectively arranged on the outside of the plurality of rotating plates 503, and the plurality of outer gear rings 601 are all rotatably connected to the fixed plate 501, and a third gear 610 is meshedly connected between the plurality of outer gear rings 601, and the third gear 610 is rotatably connected to the fixed plate 501, a second gear 608 is meshedly connected to the outside of one of the outer gear rings 601, and the second gear 608 is rotatably connected to the fixed plate 501, a second motor 609 is fixedly connected to the outside of the support plate 5, and an output shaft of the second motor 609 passes through the fixed plate 501 and is fixedly connected to the two second gears 608.

[0056] In specific implementation, when the moving assembly is used to drive the moving support frame 3 to move, by starting the first motor 404 fixedly connected to the top of the support frame 1, the output shaft of the first motor 404 drives the fixedly connected first screw rod 401 to rotate, and the outer side of the first screw rod 401 is connected to a sliding seat 403 through a ball nut pair, and the sliding seat 403 is fixedly connected to the bottom of the moving support frame 3 and is slidably connected to the support frame 1, so that the moving support frame 3 moves left and right, and one set of the upper mold 301 and the lower mold 302 are moved to the outside of the fixed plate 501. At this time, By starting the hydraulic telescopic rod 303, the hydraulic telescopic rod 303 pushes the upper mold 301 and the lower mold 302 to contact the multiple groups of cleaning parts set on both sides of the fixed plate 501. At this time, by starting the second motor 609, the output shaft of the second motor 609 drives the second gear 608 to rotate, and the second gear 608 drives the outer gear ring 601 to rotate. At this time, the outer gear ring 601 drives other outer gear rings 601 to rotate through the third gear 610, thereby achieving the rotation of multiple cleaning parts, thereby cleaning the upper mold 301 and the inner mold of the lower mold 302.

[0057] In this embodiment, the cleaning member includes a plurality of L-shaped fixed plates 602 fixedly connected to the top of the outer gear ring 601 and a fixed through-tube 61 located at the center of the rotating plate 503. The plurality of L-shaped fixed plates 602 are provided with a rotating through-tube 603 inside. The rotating through-tube 603 and the fixed through-tube 61 penetrate the rotating plate 503 and extend to the inside of the circular through-slot 502. The outer sides of the plurality of rotating through-tubes 603 and the fixed through-tube 61 are sleeved with a moving cylinder 604. The outer sides of the plurality of moving cylinders 604 are fixedly connected with a cleaning brush head 605. , springs 6081 are sleeved on the outside of multiple rotating tubes 603 and fixed tubes 61, first gears 606 are fixedly connected to the outside of multiple rotating tubes 603, a fixed inner gear ring 607 is fixedly connected to the outside of the fixed plate 501, the outermost first gear 606 is meshed with the fixed inner gear ring 607, sliding grooves are arranged on the outside of multiple rotating tubes 603, and protrusions 6041 are fixedly connected to the inside of multiple moving cylinders 604, and the protrusions 6041 extend into the inside of the sliding grooves and slide with the rotating tubes 603.

[0058] In a specific implementation, when the upper mold 301 and the lower mold 302 are in contact with the cleaning brush head 605, and as the upper mold 301 and the lower mold 302 continue to move, part of the moving cylinder 604 is fully in contact with the upper mold 301 and the lower mold 302 under the action of the spring 6081, so that the concave and convex parts can also be in contact to avoid the dead corner of cleaning, and at the same time, the fixed through-tube 61 and the rotating through-tube 603 both penetrate the rotating plate 503, the fixed through-tube 61 is fixedly connected to the rotating plate 503, and the moving cylinder 604 outside the fixed through-tube 61 also adopts the mode of matching the slide groove with the protrusion 6041, and multiple rotating through-tubes 603 and the rotating plate 50 3 Rotation connection, when the outer gear ring 601 rotates, the L-shaped fixed plate 602 drives the multiple rotating tubes 603 to rotate in a circle around the center of the rotating plate 503. At this time, the first gear 606 at the outermost side is meshed with the fixed inner gear ring 607, and then the multiple first gears 606 are transmitted to make the rotating tube 603 rotate. When the rotating tube 603 rotates, the moving cylinder 604 can move up and down and rotate through the cooperation of the protrusion 6041 and the slide groove, so as to achieve the purpose of fully cleaning the outer gear ring 601 and the L-shaped fixed plate 602, ensuring that in the process of stamping and forming the film, the adhesion to the inside of the mold during separation will not affect the subsequent production.

[0059] In this embodiment, an air suction pump 506 is fixedly connected to the outer side of the two support plates 5. The air suction end of the air suction pump 506 is fixedly connected to the air suction pipe 504. The outer side of the air suction pipe 504 is fixedly connected to multiple branch pipes, which extend to the inside of the circular through groove 502 respectively, for absorbing dust after cleaning the mold assembly.

[0060] During the specific implementation, by starting the suction pump 506, the suction pipe 504 fixedly connected to the suction end of the suction pump 506 is suctioned, and is inserted into the fixed plate 501 through multiple branch pipes arranged on the outside, and extends to between the two rotating plates 503. In this scheme, the rotating through pipe 603 and the movable cylinder 604 are arranged to be connected. When the cleaning brush head 605 is cleaning, suction is generated to collect the cleaned waste into the circular through groove 502, and is sucked into the suction pipe 504 through the branch pipe for discharge, so as to prevent the cleaned waste from contaminating the film on the outside of the upper mold 301 and the lower mold 302.

[0061] Embodiment three: The peeling assembly includes a sliding block 701 arranged on one of the mounting brackets 7 and a moving block 702 on the other mounting bracket 7, the sliding block 701 is fixedly connected with a fixed shaft 704 inside, and two rotating shafts 703 are sleeved on the outside of the fixed shaft 704, and the two rotating shafts 703 are fixedly connected to the fixed shaft 704 through a clockwork spring, and thin ropes 705 are wrapped and fixed on the outside of the two rotating shafts 703, and the two thin ropes 705 are fixedly connected to the moving block 702, and connecting plates 706 are fixedly connected to the outside of the two mounting brackets 7, and the tops of the connecting plates 706 are provided with serrated grooves, which are tightly fitted with the thin ropes 705, and the two thin ropes 705 are respectively arranged on the upper and lower sides of the film.

[0062] The stripping assembly includes a second screw rod 801 arranged on two mounting brackets 7, the two second screw rods 801 respectively penetrate the sliding block 701 and the moving block 702 and are connected to the sliding block 701 and the moving block 702 through a ball nut pair, the second screw rod 801 is rotatably connected to the mounting bracket 7, a third motor 802 is fixedly connected to the outer side of the mounting bracket 7, the output shaft of the third motor 802 is fixedly connected to the second screw rod 801, a limiting plate 803 is fixedly connected to the outer sides of the two mounting brackets 7, and the two mounting brackets 7 are slidably connected to the sliding block 701 and the moving block 702 respectively.

[0063] In specific implementation, after the upper mold 301 and the lower mold 302 have stamped and formed the film, the upper mold 301 and the lower mold 302 are separated. During the separation process, since the film is easily adhered to the upper mold 301 and the lower mold 302, if they are directly separated, it is easy to cause damage to the film. Therefore, in this solution, two thin ropes 705 are provided between the sliding block 701 and the moving block 702, respectively, and are provided on both sides of the film. At this time, the third motor 802 is used to drive the second screw rod 801 to rotate, so that the sliding block 701 and the moving block 702 move synchronously, and drive the two thin ropes 705 to move and insert into the separation gap between the upper mold 301 and the lower mold 302. The thin ropes 705 are inserted into the gap between the film and the mold to increase the space of the gap. In order to avoid the thin ropes 70 5 will cause damage to the formed cup cover, so a spring is fixed between the rotating shaft 703 and the fixed shaft 704 to make the thin rope 705 have a certain degree of extensibility, so that the thin rope 705 extends to the outside of the formed cup cover to move. When stretched to a certain length, it slides on the film and the surface to separate the cup cover from the mold. At the same time, a connecting plate 706 is fixedly connected to the outside of the mounting bracket 7. A toothed groove is arranged on the connecting plate 706. When the thin rope 705 moves, it contacts the toothed groove on the connecting plate 706, so that the thin rope 705 has a certain vibration. The amplitude of the vibration can also be adjusted by controlling the moving speed of the thin rope 705. The slower the thin rope 705 moves, the smaller the vibration amplitude. The adjustment is made according to the complexity of the cup cover, thereby further improving the separation effect of the thin rope 705 on the film and the mold.

[0064] A method for thermoforming a biodegradable hot coffee cup cover mechanism is also provided, comprising the following steps:

[0065] Step 1: The film on the unwinding frame 9 passes through the heating device 2, the mold assembly on the movable support frame 3 and the cutting device 10 in sequence, and is finally fixedly connected to the outer side of the winding device 11;

[0066] Step 2: When the film is rolled up by the winding device 11, the heating device 2 heats and softens the film, and then the cup cover is molded by punching through one set of mold assemblies;

[0067] Step 3: After the cup cover is formed, the mold assembly is separated and the peeling assembly is started to separate the film from the mold;

[0068] Step 4: When punching the next section, the moving support frame 3 is moved by the moving assembly to move the used mold assembly to the cleaning assembly, so that the cleaning assembly cleans the mold assembly and another set of mold assemblies continues to punch.

[0069] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0070] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0071] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thermoforming device for a biodegradable hot coffee cup cover mechanism, comprising a support frame (1), wherein one end of the support frame (1) is provided with an unwinding frame (9), characterized in that: Also includes: A movable support frame (3), wherein a movable assembly for driving the movable support frame (3) to move horizontally is arranged at the bottom of the movable support frame (3), and two groups of mold assemblies for molding the film are arranged inside the movable support frame (3); Support plates (5) are fixedly connected to both sides of the top of the support frame (1), and the two support plates (5) are respectively arranged at both ends of the movable support frame (3). Cleaning components are arranged on opposite sides of the two support plates (5). When the movable component drives the movable support frame (3) to move horizontally, the cleaning components clean the two groups of mold components alternately. The top of the support frame (1) is fixedly connected to two mounting brackets (7), both mounting brackets (7) pass through the interior of the movable support frame (3), and a peeling component is provided between the two mounting brackets (7) for separating the formed film from the mold component; The cleaning assembly comprises a fixed plate (501) fixedly connected to one side of the support plate (5), a plurality of circular through grooves (502) are provided on the outer side of the fixed plate (501), two opposite rotating plates (503) are arranged inside the plurality of circular through grooves (502), the two rotating plates (503) are rotatably connected to the fixed plate (501), and cleaning pieces are arranged on the outer sides of the two rotating plates (503); The cleaning assembly further comprises a plurality of outer gear rings (601), the plurality of outer gear rings (601) are respectively arranged on the outer sides of the plurality of rotating plates (503), the plurality of outer gear rings (601) are all rotatably connected to the fixed plate (501), a third gear (610) is meshedly connected between the plurality of outer gear rings (601), the third gear (610) is rotatably connected to the fixed plate (501), the second gear (608) is rotatably connected to the fixed plate (501), a second motor (609) is fixedly connected to the outer side of the support plate (5), an output shaft of the second motor (609) passes through the fixed plate (501) and is fixedly connected to the two second gears (608), the output shaft of the second motor (609) drives the second gear (608) to rotate, the second gear (608) drives the outer gear ring (601) to rotate, and at this time, the outer gear ring (601) drives the other outer gear rings (601) to rotate through the third gear (610); The stripping assembly comprises a sliding block (701) arranged on one of the mounting brackets (7) and a moving block (702) on the other mounting bracket (7); a fixed shaft (704) is fixedly connected inside the sliding block (701); two rotating shafts (703) are sleeved on the outside of the fixed shaft (704); the two rotating shafts (703) are fixedly connected to the fixed shaft (704) via a spring; thin ropes (705) are wound and fixed on the outside of the two rotating shafts (703); the two thin ropes (705) are fixedly connected to the moving block (702); the outsides of the two mounting brackets (7) are fixedly connected to connecting plates (706); the tops of the connecting plates (706) are provided with tooth-shaped grooves; the tooth-shaped grooves are tightly fitted with the thin ropes (705); the two thin ropes (705) are respectively arranged on the upper and lower sides of the film; The stripping assembly comprises a second screw rod (801) arranged on two mounting brackets (7); the two second screw rods (801) respectively penetrate the sliding block (701) and the moving block (702) and are connected to the sliding block (701) and the moving block (702) via a ball nut pair; the second screw rod (801) is rotationally connected to the mounting bracket (7); a third motor (802) is fixedly connected to the outer side of the mounting bracket (7); the output shaft of the third motor (802) is fixedly connected to the second screw rod (801); a limiting plate (803) is fixedly connected to the outer side of the two mounting brackets (7); and the two mounting brackets (7) are slidably connected to the sliding block (701) and the moving block (702) respectively.

2. The thermoforming device of the biodegradable hot coffee cup cover mechanism according to claim 1, characterized in that: The mold assembly comprises an upper mold (301) and a lower mold (302) which are arranged opposite to each other, and a plurality of hydraulic telescopic rods (303) are fixedly connected between the upper mold (301) and the lower mold (302) and the movable support frame (3).

3. The thermoforming device of the biodegradable hot coffee cup cover mechanism according to claim 1, characterized in that: The cleaning member comprises a plurality of L-shaped fixed plates (602) fixedly connected to the top of the outer gear ring (601) and a fixed through-tube (61) located at the center of the rotating plate (503); a rotating through-tube (603) is arranged inside the plurality of L-shaped fixed plates (602); the rotating through-tube (603) and the fixed through-tube (61) both penetrate the rotating plate (503) and extend to the inside of the circular through-slot (502); a movable cylinder (604) is sleeved on the outside of the plurality of rotating through-tubes (603) and the fixed through-tube (61); a cleaning brush head (605) is fixedly connected to the outside of the plurality of movable cylinders (604); The outer sides of the plurality of rotating tubes (603) and the fixed tubes (61) are sleeved with springs (6081); the outer sides of the plurality of rotating tubes (603) are fixedly connected with first gears (606); the outer sides of the fixed plates (501) are fixedly connected with fixed inner gear rings (607); the outermost first gears (606) are meshingly connected with the fixed inner gear rings (607); the outer sides of the plurality of rotating tubes (603) are provided with sliding grooves; the inner sides of the plurality of moving cylinders (604) are fixedly connected with protrusions (6041); the protrusions (6041) extend into the interior of the sliding grooves and are slidably matched with the rotating tubes (603).

4. The thermoforming device of the biodegradable hot coffee cup cover mechanism according to claim 1, characterized in that: The outer sides of the two support plates (5) are fixedly connected with an air suction pump (506), the air suction end of the air suction pump (506) is fixedly connected with an air suction pipe (504), and the outer side of the air suction pipe (504) is fixedly connected with a plurality of branch pipes, which respectively extend into the inside of the circular through groove (502) for absorbing dust after cleaning the mold assembly.

5. The thermoforming device of the biodegradable hot coffee cup cover mechanism according to claim 1, characterized in that: A heating device (2) for heating a film is fixedly connected to the top of the support frame (1), a cutting device (10) for cutting formed cup lids is arranged on one side of the movable support frame (3), and a winding device (11) for winding waste films and a conveying device (12) for conveying cup lids are fixedly connected to the top of the support frame (1).

6. A method for thermoforming a biodegradable hot coffee cup cover mechanism, applicable to a thermoforming device for a biodegradable hot coffee cup cover mechanism as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: The film on the unwinding frame (9) is sequentially passed through the heating device (2), the mold assembly on the movable support frame (3) and the cutting device (10), and finally fixedly connected to the outer side of the winding device (11); Step 2: When the film is rolled up by the winding device (11), the heating device (2) heats and softens the film, and then the film is pressed by one set of mold assemblies to form the cup cover; Step 3: After the cup cover is formed, the mold assembly is separated and the peeling assembly is started to separate the film from the mold; Step 4: When punching the next section, the moving support frame (3) is driven by the moving assembly to move the used mold assembly to the cleaning assembly, so that the cleaning assembly cleans the mold assembly and another set of mold assemblies continues to punch.

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