Continuous plastic packaging machine for plastic paper cups

Abstract

The invention provides a continuous plastic packaging machine for plastic paper cups, which belongs to the technical field of packaging and comprises a conveying unit, a film guide unit and an edge sealing unit. The conveying unit comprises a packaging conveyor and a discharging conveyor which are sequentially arranged. The film guiding unit comprises a film releasing structure and a film guiding structure which are arranged up and down, the film releasing structure comprises a film releasing roller rotationally connected to a packaging conveyor body and a film releasing part in transmission connection with the film releasing roller, the film releasing part is used for driving the film releasing roller to rotate, the film guiding structure comprises two film guiding rollers arranged up and down, and the film guiding rollers are fixedly connected to the packaging conveyor body; the edge sealing unit comprises a side sealing structure arranged above the packaging conveyor and an end sealing mechanism arranged between the packaging conveyor and the discharging conveyor, the side sealing structure is provided with a gap allowing the thin film to pass through and used for sealing the two sides of the thin film to form a cylindrical film, and the end sealing structure is used for sealing and cutting an end opening of the cylindrical film. According to the invention, the error-tolerant rate of packaging and the packaging efficiency are improved.

Description

Technical Field

[0001] This invention belongs to the technical field of packaging, specifically relating to a continuous plastic paper cup sealing machine. Background Technology

[0002] In the production and distribution of paper cups, multiple paper cups are usually packaged into a single sales unit for easy storage, transportation, and to maintain product cleanliness and hygiene. This packaging not only effectively prevents the paper cups from scattering or deforming during handling, but also avoids contamination of the drinking rim by dust, moisture, etc., making it an important step in ensuring product quality and enhancing the product's display image.

[0003] Currently, heat shrink film is commonly used for sealing paper cups in the market. The basic packaging material used in common packaging machines is a pre-made tubular (or sleeve-shaped) plastic film. When the film cutting and heat sealing mechanism of the packaging machine is in operation, it needs to insert a fixed-size film "sleeve" into a group of neatly arranged paper cups from top to bottom. The structural design of the tubular film allows it to complete the packaging process with only one heat sealing step at the bottom.

[0004] However, this packaging method, which relies on the "insertion" action, inherently presents an operational challenge. Because the packaging film is a pre-designed cylindrical structure with a fixed opening size, and the group of paper cups to be packaged forms an approximate cone shape (wider at the top and narrower at the bottom), the operator must precisely align the paper cups and pass them through the opening of the cylindrical film during the insertion process. This low tolerance for error results in poor packaging efficiency. Summary of the Invention

[0005] This invention provides a continuous plastic paper cup sealing machine, which aims to solve the technical problems of low error tolerance and poor packaging efficiency caused by the use of tubular film for packaging.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a continuous plastic paper cup sealing machine, comprising:

[0007] The conveying unit includes a packaging conveyor and a feeding conveyor arranged sequentially along a first direction;

[0008] A film guiding unit is located on the side of the packaging conveyor away from the unloading conveyor. The film guiding unit includes a film feeding structure and a film guiding structure arranged vertically. The film feeding structure includes a film feeding roller rotatably connected to the body of the packaging conveyor and a film feeding component drively connected to the film feeding roller. The film feeding component drives the film feeding roller to rotate about a second direction as its rotation axis. The film guiding structure includes two film guiding rollers arranged vertically, and the film guiding rollers are fixedly connected to the body of the packaging conveyor.

[0009] The sealing unit includes a side sealing structure disposed above the packaging conveyor and an end sealing structure disposed between the packaging conveyor and the unloading conveyor. The side sealing structure has a gap for the film to pass through and is used to seal both sides of the film to form a tubular film. The end sealing structure is used to seal and cut the ends of the tubular film.

[0010] In one possible embodiment, the membrane structure further includes:

[0011] Two film guide plates are arranged at an angle relative to each other. The two film guide plates are close to each other on the side closer to the packaging conveyor and the two film guide plates are close to each other on the side closer to the side sealing structure. An adjustment column is fixed to the side of the two film guide plates that are opposite to each other. A material cavity is opened in the film guide plate.

[0012] Two bases are located on opposite sides of the two lead-film plates, and the bases correspond one-to-one with the lead-film plates. Each base has a first adjustment cavity for the adjustment column to slide, and the first adjustment cavity is connected to the material cavity.

[0013] Two first elastic members, each corresponding to one of the adjusting posts, are fixedly connected between the adjusting post and the inner wall of the first adjusting cavity. Each first elastic member has a preload force that causes the adjusting post to move outward from the first adjusting cavity.

[0014] A transfer component is connected to the first adjustment cavity and the material cavity, and the transfer component is used to transfer contents within the material cavity and the first adjustment cavity.

[0015] In one possible embodiment, a second adjusting cavity is provided on each of the two membrane plates on opposite sides, the second adjusting cavity being connected to the first adjusting cavity, and the transfer member being used to adjust the contents between the first adjusting cavity, the second adjusting cavity, and the material cavity;

[0016] The sealing unit includes a pre-sealing structure disposed at one end of the lead-in plate near the side sealing structure;

[0017] The pre-sealing structure includes:

[0018] Two pre-sealing seats are slidably disposed in the second adjusting cavity in a one-to-one correspondence. The pre-sealing seats move along the second direction. A second elastic member is fixed between the pre-sealing seat and the inner wall of the second adjusting cavity. The second elastic member has a pre-tightening force that causes the pre-sealing seat to move outward of the second adjusting cavity.

[0019] Two pre-sealing rollers are rotatably connected to the pre-sealing seat in a one-to-one correspondence, with the pre-sealing rollers rotating along a vertical axis; and

[0020] A pre-sealing component is connected to the pre-sealing roller and is used to drive the pre-sealing roller to rotate.

[0021] In one possible embodiment, a receiving groove is provided on each of the two film-drawing plates on opposite sides, and a film-drawing unit is provided in the receiving groove;

[0022] The film stretching unit includes:

[0023] A membrane conveyor is fixedly connected to the inner wall of the receiving trough;

[0024] A film-stretching roller is fixed to the surface of the conveyor belt of the film-stretching conveyor, and the outer wall of the film-stretching roller has multiple suction ports; and

[0025] A first pneumatic component is connected to the adsorption port and is used to evacuate air from the adsorption port.

[0026] In one possible embodiment, the conveying unit further includes an loading conveyor located on the side of the packaging conveyor opposite to the unloading conveyor;

[0027] The feeding conveyor is equipped with a counting unit at one end near the packaging conveyor;

[0028] The counting unit includes:

[0029] The counting frame is fixedly connected to the body of the feeding conveyor;

[0030] A counting column is connected to the counting frame, and a sliding groove is provided on the side of the counting column opposite to the counting frame;

[0031] The counting protrusion is slidably disposed on the counting column, and the counting protrusion moves in the up-down direction;

[0032] The third elastic member is fixed to the counting protrusion and the inner wall of the slide groove, and the third elastic member has a pre-tightening force that causes the counting protrusion to extend out of the slide groove;

[0033] A counting sensor, connected to the elastic element, is used to calculate the number of times the elastic element deforms within a preset deformation range; and

[0034] The separation structure is communicatively connected to the counting sensor and is used to separate paper cups of a target number.

[0035] In one possible configuration, the outer wall of the counting protrusion is provided with a plurality of impact holes;

[0036] The separation structure includes:

[0037] A second pneumatic component, connected to the slide groove, is used to inflate or evacuate the slide groove; and

[0038] The third pneumatic component is connected to the impact hole and is used to blow air into the impact hole.

[0039] In one possible configuration, a transfer unit is provided between the feeding conveyor and the packaging conveyor;

[0040] The transfer unit includes:

[0041] Transfer station;

[0042] A transverse pusher, fixedly connected to the transfer table, extends and retracts along the second direction; and

[0043] A baffle is provided relative to the transverse pusher.

[0044] In one possible embodiment, the transfer unit further includes:

[0045] The push plate is fixedly connected to the telescopic section of the horizontal push member;

[0046] Two sorting plates are disposed opposite each other on both sides of the push plate along the first direction, and the sorting plates are slidably connected to the push plate along the first direction; and

[0047] An adjusting element is connected to the sorting plate and is used to adjust the distance between the two sorting plates.

[0048] In one possible configuration, a flexible pad is fixed to the outer periphery of the counting protrusion.

[0049] In one possible embodiment, the membrane structure further includes:

[0050] A dust removal roller is rotatably connected to the outer periphery of the film-drawing roller. The dust removal roller rotates about the second direction as its rotation axis, and an electrostatic discharge device is provided on the outer periphery of the dust removal roller.

[0051] The dust removal component is connected to the dust removal roller and is used to drive the dust removal roller to rotate.

[0052] This invention provides a continuous plastic paper cup sealing machine. Compared with existing technologies, this design achieves fully continuous paper cup packaging through the coordinated operation of a conveying unit, a film guiding unit, and a sealing unit. The cooperation between the film feeding and guiding structures in the film guiding unit ensures that the film is smoothly and continuously conveyed to the packaging station. The sealing unit decomposes the sealing process into two steps: side sealing and end sealing. The side sealing structure first heat-seals both edges of the flat film in real time to form a continuous cylindrical film wrapping the paper cup. Subsequently, the end sealing structure closes and cuts the ends of the cylindrical film at appropriate positions, thus forming an independent sealed package. This process not only significantly improves packaging speed and production efficiency but also greatly reduces the dependence on operational precision, enhancing the equipment's fault tolerance and adaptability, and flexibly responding to the packaging needs of paper cups of different sizes. By adopting a flat film and forming it into a cylindrical film online, the problem of low operational efficiency caused by the conical shape of the paper cup (larger at the top and smaller at the bottom) and the difficulty in aligning with a pre-sized cylindrical film is fundamentally solved. Attached Figure Description

[0053] Figure 1 This is a partial schematic diagram of a continuous plastic paper cup sealing machine according to an embodiment of the present invention;

[0054] Figure 2 This is a schematic diagram illustrating the structure of the film-drawing plate in an embodiment of the present invention;

[0055] Figure 3 for Figure 2 A magnified view of part A in the middle;

[0056] Figure 4 This is a partial cross-sectional view illustrating the method of adjusting the position of the film-drawing plate in an embodiment of the present invention;

[0057] Figure 5 This is a partial cross-sectional view illustrating the pre-sealing roller position adjustment method in an embodiment of the present invention;

[0058] Figure 6 This is a schematic diagram illustrating the structure of the counting unit in an embodiment of the present invention;

[0059] Figure 7 This is a cross-sectional view illustrating the method of adjusting the position of the counting protrusions in an embodiment of the present invention.

[0060] Explanation of reference numerals in the attached figures:

[0061] 10. Conveying unit; 101. Packaging conveyor; 102. Unloading conveyor; 103. Loading conveyor;

[0062] 20. Film guiding unit; 201. Film feeding roller; 202. Film guiding roller; 203. Film guiding plate; 2031. Adjusting post; 2032. Second adjusting cavity; 2033. Receiving groove; 204. Base; 2041. First adjusting cavity; 205. First elastic element; 206. Dust removal roller;

[0063] 30. Edge sealing unit; 301. Pre-sealing seat; 3011. Second elastic element; 302. Pre-sealing roller;

[0064] 40. Film stretching unit; 401. Film stretching conveyor; 402. Film stretching roller; 4021. Adsorption port;

[0065] 50. Counting unit; 501. Counting frame; 502. Counting column; 503. Counting protrusion; 5031. Impact hole; 504. Third elastic component; 505. Third pneumatic component;

[0066] 60. Transfer unit; 601. Transfer table; 602. Horizontal pusher; 603. Baffle; 604. Push plate; 605. Sorting plate; 606. Adjustable distance component. Detailed Implementation

[0067] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0068] Please refer to the following: Figures 1 to 7 This invention describes a continuous plastic paper cup sealing machine. The continuous plastic paper cup sealing machine includes a conveying unit 10, a film guiding unit 20, and a sealing unit 30. The conveying unit 10 includes a packaging conveyor 101 and a feeding conveyor 102 arranged sequentially along a first direction. The film guiding unit 20 is located on the side of the packaging conveyor 101 away from the feeding conveyor 102. The film guiding unit 20 includes a film feeding structure and a film guiding structure arranged vertically. The film feeding structure includes a film feeding roller 201 rotatably connected to the body of the packaging conveyor 101 and a film feeding component drively connected to the film feeding roller 201. The film feeding component is used to drive the film feeding roller 201 to a certain direction. The rotation is bidirectional, with the film feeding component being a servo motor. The film feeding structure includes two film feeding rollers 202 arranged vertically, which are fixed to the body of the packaging conveyor 101. The sealing unit 30 includes a side sealing structure located above the packaging conveyor 101 and an end sealing structure located between the packaging conveyor 101 and the unloading conveyor 102. The side sealing structure has a gap for the film to pass through and is used to seal both sides of the film to form a cylindrical film. The end sealing structure is used to seal and cut the ends of the cylindrical film. Both the end sealing structure and the side sealing structure are existing heat sealing structures, which will not be described in detail in this application.

[0069] This embodiment provides a continuous plastic cup sealing machine. The film-laying mechanism activates, driving the film rollers to rotate continuously, thereby releasing a flat film. The film is then guided by two upper and lower film-guiding rollers 202 to the top of the packaging conveyor 101, where the target number of paper cups are placed. The film enters the sealing unit 30, first passing through a side-sealing structure with a gap for the film to pass through. Here, the two edges of the film are heat-sealed, forming a continuous tubular film around the paper cup, encasing it. As the packaging conveyor 101 continues to move, the paper cups encased in the tubular film are transported to the junction of the packaging conveyor 101 and the unloading conveyor 102. Here, the end-sealing structure activates, heat-sealing the ends of the tubular film and simultaneously cutting the connecting portion, thus completing the plastic sealing of the paper cups. Finally, the sealed products are transported away by the unloading conveyor 102.

[0070] Compared to existing technologies, this design achieves fully continuous paper cup packaging through the coordinated operation of the conveying unit 10, the film guiding unit 20, and the sealing unit 30. The cooperation between the film feeding and guiding structures in the film guiding unit 20 ensures the film is smoothly and continuously conveyed to the packaging station. The sealing unit 30 decomposes the sealing process into two steps: side sealing and end sealing. The side sealing structure first heat-seals both edges of the flat film in real time to form a continuous tubular film wrapping the paper cup. Then, the end sealing structure closes and cuts the ends of the tubular film at appropriate locations, forming an independent sealed package. This process not only significantly improves packaging speed and production efficiency but also greatly reduces reliance on operational precision, enhancing the equipment's fault tolerance and adaptability, and flexibly responding to the packaging needs of paper cups of different sizes. By adopting a flat film and forming it into a tubular film online, the problem of low operational efficiency caused by the conical shape of the paper cup (larger at the top and smaller at the bottom) and the difficulty in aligning with a pre-sized tubular film is fundamentally solved.

[0071] In some embodiments, see Figure 2 and Figure 4The film-drawing structure also includes two film-drawing plates 203, two bases 204, two first elastic elements 205, and a transfer element; the two film-drawing plates 203 are arranged at relative inclinations, with the sides of the two film-drawing plates 203 near the packaging conveyor 101 close to each other, and the sides of the two film-drawing plates 203 near the side sealing structure close to each other, and an adjustment column 2031 is fixedly connected to the opposite sides of the two film-drawing plates 203, and a material cavity is opened in the film-drawing plate 203; the two bases 204 are located on the opposite sides of the two film-drawing plates 203, and the bases 204 correspond one-to-one with the film-drawing plates 203, and the bases 204 are open A first adjusting cavity 2041 is provided for the adjusting column 2031 to slide, and the first adjusting cavity 2041 is connected to the material cavity; two first elastic members 205 correspond one-to-one with the adjusting column 2031, and the first elastic members 205 are fixed between the adjusting column 2031 and the inner wall of the first adjusting cavity 2041. The first elastic members 205 have a pre-tightening force that causes the adjusting column 2031 to move outward of the first adjusting cavity 2041, and the first elastic members 205 are spring rods; a transfer member is connected to the first adjusting cavity 2041 and the material cavity, and the transfer member is used to transfer the contents in the material cavity and the first adjusting cavity 2041.

[0072] Optionally, the contents are hydraulic oil, and the transfer component is an oil pump.

[0073] Optionally, the contents are particulate matter, and the transfer device is a particulate pump.

[0074] When processing paper cups of different sizes or changing films, the system first transfers the contents between the material chamber and the first adjusting chamber 2041 via a transfer component. For example, when it is necessary to widen the channel spacing between the two guide plates 203 to accommodate larger groups of paper cups, the transfer component transfers the contents from the first adjusting chamber 2041 into the material chamber. Under the pre-tightening force of the first elastic element 205, the adjusting column 2031 moves the two guide plates 203 away from each other, increasing the channel width. Conversely, when it is necessary to narrow the channel, the transfer component pumps more contents into the first adjusting chamber 2041, thereby forcing the two guide plates 203 to move closer together via the adjusting column 2031.

[0075] During operation, the film drawn from the film feeding roller 201 first enters the guide channel formed by two relatively inclined film feeding plates 203, and the film is gradually gathered, thus completing the transition from flat film to quasi-cylindrical film.

[0076] In some embodiments, see Figure 2 and Figure 5 Each of the two membrane plates 203 has a second adjusting cavity 2032 on one side opposite to the first adjusting cavity 2041. The transfer component is used to adjust the contents between the first adjusting cavity 2041, the second adjusting cavity 2032 and the material cavity.

[0077] The sealing unit 30 includes a pre-sealing structure located at one end of the film guide plate 203 near the side sealing structure. The pre-sealing structure includes two pre-sealing seats 301, two pre-sealing rollers 302, and a pre-sealing component. The two pre-sealing seats 301 are slidably disposed in the second adjusting cavity 2032, and the pre-sealing seats 301 move along the second direction. A second elastic member 3011 is fixedly connected between the pre-sealing seats 301 and the inner wall of the second adjusting cavity 2032. The second elastic member 3011 has a pre-tightening force that causes the pre-sealing seats 301 to move outward from the second adjusting cavity 2032. The second elastic member 3011 is a spring rod. The two pre-sealing rollers 302 are rotatably connected to the pre-sealing seats 301, and the pre-sealing rollers 302 have the vertical direction as their rotation axis. The pre-sealing component is drivenly connected to the pre-sealing rollers 302 and is used to drive the pre-sealing rollers 302 to rotate. The pre-sealing component is a servo motor.

[0078] During operation, when the system is adjusted according to packaging process requirements, the transfer component not only transfers the contents within the first adjusting cavity 2041 of the film guide plate 203 to adjust the channel width, but also injects or extracts the contents into the second adjusting cavity 2032. This action pushes or pulls back the pre-sealing seat 301 sliding within the second adjusting cavity 2032, causing the pre-sealing seat 301 to move along the second direction, thereby precisely adjusting the pre-sealing roller 302 to the position corresponding to the current film edge.

[0079] The pre-sealing mechanism is activated, driving the pre-sealing roller 302 to rotate along its vertical axis. The film, gathered and guided by the film guide plate 203, passes between these two relatively rotating pre-sealing rollers 302 before its edges enter the side-sealing structure. Under pressure, the pre-sealing rollers 302 roll the film edges, achieving a preliminary, gradual adhesion (i.e., pre-sealing). This initially formed adhesion line temporarily fixes the film shape, allowing the film to smoothly transition into the subsequent side-sealing structure as a partially formed cylindrical structure, where it is finally heat-sealed.

[0080] In some embodiments, see Figure 2 and Figure 3 Each of the two film-drawing plates 203 has a receiving groove 2033 on one side of its opposite side, and a film-pulling unit 40 is provided in the receiving groove 2033. The film-pulling unit 40 includes a film-pulling conveyor 401, a film-pulling roller 402, and a first pneumatic component; the film-pulling conveyor 401 is fixed to the inner wall of the receiving groove 2033; the film-pulling roller 402 is fixed to the conveyor belt surface of the film-pulling conveyor 401, and a plurality of suction ports 4021 are provided on the outer wall of the film-pulling roller 402; the first pneumatic component is connected to the suction ports 4021 and is used to evacuate air from the suction ports 4021, and the first pneumatic component is an air pump.

[0081] During operation, after the film is initially gathered through the guide channel of the film-drawing plate 203, its main body then enters and covers the film-drawing unit 40 located in the receiving groove 2033. At this time, the first pneumatic component is activated to continuously pump air into the pipeline connected to the multiple adsorption ports 4021 on the outer wall of the film-drawing roller 402, creating a negative pressure at the adsorption ports 4021. This negative pressure firmly adsorbs the film onto the surface of the film-drawing roller 402.

[0082] Subsequently, the film-pulling roller 402, fixed to the conveyor belt of the film-pulling conveyor 401, moves as a whole along a direction parallel to the first direction as the conveyor belt circulates. Through this circulatory movement, the adsorbed film is continuously and smoothly dragged forward, achieving active traction of the film.

[0083] After the film-pulling roller 402 has moved a certain distance, the first pneumatic component can briefly stop pumping air to release the film. Then the film-pulling roller 402 returns to the initial position with the conveyor belt, ready for the next traction cycle.

[0084] The film-pulling roller 402 generates negative pressure at the suction port 4021 via a first pneumatic component, firmly adhering to the film surface and forming a flexible "pneumatic clamp." This clamp has a large contact area and uniform pressure distribution, avoiding film indentations or damage that can occur with traditional mechanical clamping. Driven by the film-pulling conveyor 401, the film-pulling roller 402 provides controllable linear tension, ensuring that the film conveying speed matches the forward speed of the paper cups on the packaging conveyor 101. This eliminates incomplete packaging caused by delayed film feeding or film loosening and wrinkling caused by excessively fast film feeding. This active and forced film-pulling method greatly improves the synchronization and stability of the entire system.

[0085] In some embodiments, see Figure 1 , Figure 6 and Figure 7 The conveying unit 10 also includes a loading conveyor 103 located on the side of the packaging conveyor 101 away from the unloading conveyor 102, and a counting unit 50 is provided at the end of the loading conveyor 103 near the packaging conveyor 101.

[0086] The counting unit 50 includes a counting frame 501, a counting column 502, a counting protrusion 503, a third elastic member 504, a counting sensor, and a separation structure. The counting frame 501 is fixed to the body of the feeding conveyor 103. The counting column 502 is connected to the counting frame 501, and a groove is provided on the side of the counting column 502 away from the counting frame 501. The counting protrusion 503 slides on the counting column 502 and moves in the up and down direction. The third elastic member 504 is fixed to the counting protrusion 503 and the inner wall of the groove. The third elastic member 504 has a pre-tightening force that causes the counting protrusion 503 to extend out of the groove. The third elastic member 504 is a spring rod. The counting sensor is connected to the elastic member and is used to calculate the number of times the elastic member deforms within a preset deformation range. The separation structure is communicatively connected to the counting sensor and is used to separate the target number of paper cups.

[0087] During operation, paper cups are conveyed by the upstream feeding conveyor 103, passing sequentially through the location of the counting unit 50. When a single paper cup contacts the counting protrusion 503, a lateral force is applied to the protrusion 503. This force causes the counting protrusion 503 to compress the third elastic member 504 and retract into the groove of the counting column 502, completing one "giving way" action. As the paper cup completely passes through, the potential energy stored in the third elastic member 504 is released, pushing the counting protrusion 503 back to its extended state, ready to sense the next paper cup.

[0088] The counting sensor continuously monitors the periodic deformation of the third elastic element 504, determining that one paper cup has passed through each complete deformation cycle. When the counting sensor records the preset target number of times, it immediately sends an electrical signal to the separation structure connected to it. Upon receiving the signal, the separation structure quickly starts, separating the group of paper cups that has just completed the count from the main stream of the feeding conveyor 103, achieving fixed-number grouping and preparing for subsequent straightening and sealing.

[0089] By combining mechanical contact with sensing technology, the physical contact generated when a paper cup passes through is converted into an accurately countable electrical signal. The key lies in the design of the counting protrusion 503 and the third elastic element 504. When a paper cup impacts the counting protrusion 503, the displacement of the counting protrusion 503 causes the third elastic element 504 to deform. The counting sensor can accurately record the number of paper cups that have passed by by monitoring the number of reciprocating movements of this elastic element within a preset deformation range.

[0090] In some embodiments, see Figure 7The outer wall of the counting protrusion 503 has multiple impact holes 5031. The separation structure includes a second pneumatic component and a third pneumatic component 505; the second pneumatic component is connected to the slide groove and is used to inflate or evacuate the slide groove; the third pneumatic component 505 is connected to the impact holes 5031 and is used to blow air into the impact holes 5031. Both the second pneumatic component and the third pneumatic component 505 are air pumps.

[0091] When the number of paper cups passing through reaches the target number, the second pneumatic component can pre-charge a certain amount of air into the chute, causing the counting protrusion 503 to continue to extend. Then, the third pneumatic component 505 is activated to blow out a high-pressure airflow, thereby separating the target number of paper cups from the subsequent group of paper cups.

[0092] In some embodiments, see Figure 1 A transfer unit 60 is provided between the feeding conveyor 103 and the packaging conveyor 101. The transfer unit 60 includes a transfer table 601, a horizontal pusher 602, and a baffle 603; the horizontal pusher 602 is fixed to the transfer table 601 and extends and retracts in a second direction; the baffle 603 is provided relative to the horizontal pusher 602, and the horizontal pusher 602 is a telescopic oil cylinder, hydraulic cylinder, or electric cylinder.

[0093] Once the paper cup assembly is fully inside the transfer table 601, the horizontal pusher 602 extends and pushes the entire assembly of paper cups toward the fixed baffle 603. Under the force of the horizontal pusher 602, all the paper cups are pushed synchronously until they are close to the baffle 603, thereby forcibly aligning the sides of the paper cup assembly to form a neat array with clean edges and close proximity.

[0094] In some embodiments, see Figure 1 The transfer unit 60 also includes a push plate 604, two sorting plates 605, and an adjusting member 606. The push plate 604 is fixedly connected to the telescopic section of the horizontal pusher 602; the two sorting plates 605 are disposed opposite to each other on both sides of the push plate 604 along a first direction, and the sorting plates 605 are slidably connected to the push plate 604 along the first direction; the adjusting member 606 is drivenly connected to the sorting plates 605 and is used to adjust the distance between the two sorting plates 605, and the adjusting member 606 is a finger cylinder.

[0095] After the horizontal pusher 602 extends, the paper cup set is placed between the two sorting plates 605. At this time, the adjusting piece 606 is activated, causing the two sorting plates 605 to move towards each other, thereby stacking the paper cup set neatly.

[0096] In some embodiments, a flexible pad is fixed to the outer periphery of the counting protrusion 503.

[0097] A flexible pad is used to protect the paper cup and prevent dents from forming on the surface.

[0098] In some embodiments, see Figure 1The film-drawing structure also includes a dust removal roller 206 and a dust removal component; the dust removal roller 206 is rotatably connected to the outer periphery of the film-drawing roller 202, and the dust removal roller 206 rotates about the second direction as the rotation axis. The outer periphery of the dust removal roller 206 is provided with static electricity; the dust removal component is drivenly connected to the dust removal roller 206 and is used to drive the dust removal roller 206 to rotate. The dust removal component is a servo motor.

[0099] Before entering the side sealing structure, the film surface comes into contact with the continuously rotating dust removal roller 206. The outer periphery of the dust removal roller 206 is specially treated or made of selected materials to enable it to carry and maintain a stable electrostatic charge. When the film passes over its surface, the electrostatic field actively attracts light particulate contaminants from both sides of the film, especially the side facing the inner wall of the paper cup.

[0100] As the dust removal roller 206 rotates continuously, the adsorbed pollutants are carried away from the contact area with the film. Some of them may fall off naturally during subsequent movements or be processed by the collection device integrated into the system, thereby achieving online and dynamic cleaning of the film.

[0101] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A continuous plastic paper cup sealing machine, characterized in that, include: The conveying unit includes a packaging conveyor and a feeding conveyor arranged sequentially along a first direction; A film guiding unit is located on the side of the packaging conveyor away from the unloading conveyor. The film guiding unit includes a film feeding structure and a film guiding structure arranged vertically. The film feeding structure includes a film feeding roller rotatably connected to the body of the packaging conveyor and a film feeding component drivenly connected to the film feeding roller. The film feeding component is used to drive the film feeding roller to rotate about a second direction as the rotation axis. The film guiding structure includes two film guiding rollers arranged vertically, and the film guiding rollers are fixed to the body of the packaging conveyor. as well as The sealing unit includes a side sealing structure disposed above the packaging conveyor and an end sealing structure disposed between the packaging conveyor and the unloading conveyor. The side sealing structure has a gap for the film to pass through and is used to seal both sides of the film to form a tubular film. The end sealing structure is used to seal and cut the ends of the tubular film.

2. The continuous plastic paper cup sealing machine as described in claim 1, characterized in that, The membrane structure further includes: Two film guide plates are arranged at an angle relative to each other. The two film guide plates are close to each other on the side closer to the packaging conveyor and the two film guide plates are close to each other on the side closer to the side sealing structure. An adjustment column is fixed to the side of the two film guide plates that are opposite to each other. A material cavity is opened in the film guide plate. Two bases are located on opposite sides of the two lead-film plates, and the bases correspond one-to-one with the lead-film plates. Each base has a first adjustment cavity for the adjustment column to slide, and the first adjustment cavity is connected to the material cavity. Two first elastic members, each corresponding to one of the adjusting posts, are fixedly connected between the adjusting post and the inner wall of the first adjusting cavity. Each first elastic member has a preload force that causes the adjusting post to move outward from the first adjusting cavity. A transfer component is connected to the first adjustment cavity and the material cavity, and the transfer component is used to transfer contents within the material cavity and the first adjustment cavity.

3. A continuous plastic paper cup sealing machine as described in claim 2, characterized in that, Each of the two membrane plates has a second adjusting cavity on its opposite side. The second adjusting cavity is connected to the first adjusting cavity. The transfer component is used to adjust the contents between the first adjusting cavity, the second adjusting cavity and the material cavity. The sealing unit includes a pre-sealing structure disposed at one end of the lead-in plate near the side sealing structure; The pre-sealing structure includes: Two pre-sealing seats are slidably disposed in the second adjusting cavity in a one-to-one correspondence. The pre-sealing seats move along the second direction. A second elastic member is fixed between the pre-sealing seat and the inner wall of the second adjusting cavity. The second elastic member has a pre-tightening force that causes the pre-sealing seat to move outward of the second adjusting cavity. Two pre-sealing rollers are rotatably connected to the pre-sealing seat in a one-to-one correspondence, with the pre-sealing rollers rotating along the up-down direction as their axis of rotation; as well as A pre-sealing component is connected to the pre-sealing roller and is used to drive the pre-sealing roller to rotate.

4. A continuous plastic paper cup sealing machine as described in claim 2, characterized in that, Each of the two film-drawing plates has a receiving groove on one side opposite to the other, and a film-drawing unit is provided in the receiving groove; The film stretching unit includes: A membrane conveyor is fixedly connected to the inner wall of the receiving trough; A film-stretching roller is fixed to the surface of the conveyor belt of the film-stretching conveyor, and the outer wall of the film-stretching roller has multiple suction ports; and A first pneumatic component is connected to the adsorption port and is used to evacuate air from the adsorption port.

5. A continuous plastic paper cup sealing machine as described in claim 1, characterized in that, The conveying unit also includes a loading conveyor located on the side of the packaging conveyor opposite to the unloading conveyor; The feeding conveyor is equipped with a counting unit at one end near the packaging conveyor; The counting unit includes: The counting frame is fixedly connected to the body of the feeding conveyor; A counting column is connected to the counting frame, and a sliding groove is provided on the side of the counting column opposite to the counting frame; The counting protrusion is slidably disposed on the counting column, and the counting protrusion moves in the up-down direction; The third elastic member is fixed to the counting protrusion and the inner wall of the slide groove, and the third elastic member has a pre-tightening force that causes the counting protrusion to extend out of the slide groove; A counting sensor, connected to the elastic element, is used to calculate the number of times the elastic element deforms within a preset deformation range; and The separation structure is communicatively connected to the counting sensor and is used to separate paper cups of a target number.

6. A continuous plastic paper cup sealing machine as described in claim 5, characterized in that, The outer wall of the counting protrusion is provided with multiple impact holes; The separation structure includes: A second pneumatic component, connected to the slide groove, is used to inflate or evacuate the slide groove; and The third pneumatic component is connected to the impact hole and is used to blow air into the impact hole.

7. A continuous plastic paper cup sealing machine as described in claim 5, characterized in that, A transfer unit is provided between the feeding conveyor and the packaging conveyor; The transfer unit includes: Transfer station; A transverse pusher, fixedly connected to the transfer table, extends and retracts along the second direction; and A baffle is provided relative to the transverse pusher.

8. A continuous plastic paper cup sealing machine as described in claim 7, characterized in that, The transfer unit further includes: The push plate is fixedly connected to the telescopic section of the horizontal push member; Two sorting plates are disposed opposite each other on both sides of the push plate along the first direction, and the sorting plates are slidably connected to the push plate along the first direction; and An adjusting element is connected to the sorting plate and is used to adjust the distance between the two sorting plates.

9. A continuous plastic paper cup sealing machine as described in claim 5, characterized in that, A flexible pad is fixed to the outer periphery of the counting protrusion.

10. A continuous plastic paper cup sealing machine as described in claim 1, characterized in that, The membrane structure further includes: A dust removal roller is rotatably connected to the outer periphery of the film-drawing roller. The dust removal roller rotates about the second direction as its rotation axis, and an electrostatic discharge device is provided on the outer periphery of the dust removal roller. The dust removal component is connected to the dust removal roller and is used to drive the dust removal roller to rotate.

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