A paper cup forming machine roll sealing mechanism

By designing the sealing mechanism of the paper cup forming machine, and utilizing conical clamping rings and airflow relaxation technology, the problem of difficult demolding after paper cup forming was solved, achieving rapid demolding and efficient production.

CN224408614UActive Publication Date: 2026-06-26XINHONGFU ENVIRONMENTAL PROTECTION PACKAGING PROD (HUIZHOU) CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
XINHONGFU ENVIRONMENTAL PROTECTION PACKAGING PROD (HUIZHOU) CO LTD
Filing Date
2025-08-04
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

After the paper cups are formed, the cup body sticks to the mold, making demolding difficult and affecting production efficiency and quality.

Method used

Design a paper cup forming machine sealing mechanism. After heat sealing of the cup body through a conical clamping ring and an electric push rod, it is easy to demold. The cup body is pre-relaxed by airflow, and the cup body is pushed from the conical column to the extension column by a cylinder-driven pusher block, so as to achieve quick demolding.

Benefits of technology

This technology enables rapid demolding after heat sealing of paper cups, improving production efficiency and cup quality while reducing production costs.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224408614U_ABST
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Abstract

The utility model relates to paper cup roll seal technical field, and disclose a kind of paper cup forming machine roll seal mechanism, the other end of swivel ring lever is fixedly installed with conical clamping ring, the outer wall of conical clamping ring is hinged with electric push rod, the bottom of electric push rod is hinged with the inner wall of support, the front end of shaft lever is fixedly sleeved with guide plate, the side wall of support is fixedly installed with the limiting rod corresponding with conical clamping ring, the inner bottom wall of support is installed with belt conveyor by transmission machine mounting bracket. The rear cylinder will drive the front push frame to move, and the cup block moves forward along the chute, and the cup block will place the cup body from the taper column to the extension column, to facilitate the next bottom sealing process processing;In this process, first use airflow to blow cup body relaxation, then the cup body is pulled down from the taper column, to realize the purpose of quick demoulding after cup body curling heat sealing edge.
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Description

Technical Field

[0001] This utility model relates to the field of paper cup sealing technology, specifically a paper cup forming machine sealing mechanism. Background Technology

[0002] Paper cups consist of a rolled cylindrical cup body and a cup base fixed to the bottom of the cup body. The cup body is made of pre-cut cardboard rolled up. In order to improve production efficiency and reduce production costs, modern production uses automated paper cup production. In the actual production process, after the cup body is rolled up, the ends of the paper sheets need to be well heat-sealed to ensure the overall quality of the finished cup body. However, after the cup body is hot-pressed, it will stick to the mold to a certain extent, which makes it difficult for the cup body to be detached. Utility Model Content

[0003] Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a paper cup forming machine roll sealing mechanism, which has the advantage of easy demolding after rolling and heat sealing, thus solving the aforementioned problems.

[0005] (II) Technical Solution

[0006] To achieve the aforementioned goal of easy demolding after heat sealing, this utility model provides the following technical solution: a paper cup forming machine sealing mechanism, including a bracket, a conical column fixedly installed on the side of the bracket, an extension column fixedly installed on the side of the conical column, a shaft fixedly installed on the side wall of the bracket, two staggered rotating ring rods rotatably installed on the outer side of the shaft rod, a conical clamping ring fixedly installed at the other end of the rotating ring rod, an electric push rod hinged to the outer wall of the conical clamping ring, the bottom of the electric push rod hinged to the inner wall of the bracket, a guide plate fixedly fitted to the front end of the shaft rod, a limiting rod corresponding to the conical clamping ring fixedly installed on the side wall of the bracket, and a belt conveyor installed on the inner bottom wall of the bracket via a conveyor mounting frame.

[0007] Preferably, a limiting inclined plate for limiting paper is fixedly installed on the outer side of the extension column, and a limiting piece for limiting paper is fixedly installed on the top of the shaft.

[0008] Preferably, a protruding plate is fixedly installed on the swivel of the rotating rod, one end of the guide plate contacts and is flush with the protruding plate, and the other end of the guide plate contacts and is flush with the belt conveyor.

[0009] Preferably, a cylinder is fixedly installed on the outer side of the bracket, a front pusher is fixedly installed at the output end of the cylinder, a pusher block is fixedly installed at the end of the front pusher, and a sliding groove corresponding to the pusher block is opened on the outer side of the cone column.

[0010] Preferably, an air nozzle is fixedly installed on the inner wall of the bracket via a support, and the other end of the air nozzle is connected to an air supply pump assembly via a hose, the air supply pump assembly being fixedly installed on the outer side of the bracket.

[0011] Preferably, a second cylinder is fixedly installed on the top of the bracket, and a hot pressing head is fixedly installed on the output end of the second cylinder, with an electric heating wire embedded inside the hot pressing head.

[0012] Preferably, the electric push rod, belt conveyor, cylinder one, air pump group and cylinder two are all electrically connected to the PLC controller.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, the present invention provides a paper cup forming machine sealing mechanism, which has the following beneficial effects:

[0015] The sealing mechanism of this paper cup forming machine works by conveying the flat paper of the cup body to the guide plate and the convex plate via a belt conveyor. The front end of the flat paper is blocked by a limiting plate, placing it between two conical clamping rings while being supported by the guide plate and the convex plate. Two electric push rods are synchronously controlled to rotate and close the conical clamping rings, pressing the flat paper onto the conical column. Simultaneously, as the two conical clamping rings rotate and open, cylinder two drives the hot-pressing bevel head to bend the cup body. The curved joint is sealed by heat pressing. When the heat pressing bevel is driven to move back to its original position, the air supply pump will also spray air from the air nozzle. The gas enters the gap between the cup body and the cone column, so that the cup body is pre-relaxed. Then, one cylinder will drive the front pusher to move. The cup pusher moves forward along the slide. The cup pusher will push the cup body from the cone column to the extension column for placement, which is convenient for the next bottom sealing process. In this process, the airflow is first used to blow the cup body to relax, and then the cup body is pulled down from the cone column, so as to achieve the purpose of quick demolding after the cup body is rolled and heat-sealed. Attached Figure Description

[0016] Figure 1 This is a three-dimensional front view of the present invention;

[0017] Figure 2 This is a three-dimensional side view of the present invention;

[0018] Figure 3 This is a three-dimensional exploded view of the present invention;

[0019] Figure 4 This is an exploded structural diagram of the shaft, tapered clamping ring, and guide plate of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of cylinder 1, front push frame and cone column of this utility model.

[0021] In the diagram: 1. Bracket; 2. Conical column; 3. Extension column; 4. Limiting inclined plate; 5. Shaft; 6. Limiting piece; 7. Rotary ring rod; 8. Conical clamping ring; 9. Electric push rod; 10. Guide plate; 11. Limiting rod; 12. Transmission machine mounting frame; 13. Belt transmission machine; 14. Cylinder 1; 15. Front push frame; 16. Push cup block; 17. Slide groove; 18. Support; 19. Air nozzle; 20. Air supply pump set; 21. Cylinder 2; 22. Hot pressing inclined head; 23. Convex plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5 A paper cup forming machine sealing mechanism includes a support 1, a conical column 2 fixedly installed on the side of the support 1, an extension column 3 fixedly installed on the side of the conical column 2, and a limiting inclined plate 4 for restricting paper fixedly installed on the outer side of the extension column 3. After the paper body is bent, it is restricted on the side of the limiting inclined plate 4, and the setting of the limiting inclined plate 4 ensures that the paper body will not move upward; the limiting inclined plate 4 will not cause resistance to the conical clamping ring 8; a shaft 5 is fixedly installed on the side wall of the support 1, and a limiting piece 6 for restricting paper is fixedly installed on the top of the shaft 5. When the flat paper is passed forward, the flat paper will be blocked by the limiting piece 6 to ensure that the flat paper will not move forward excessively.

[0024] Please see Figure 1-5 Two staggered rotating ring rods 7 are rotatably mounted on the outer side of the shaft 5. A conical clamping ring 8 is fixedly mounted on the other end of the rotating ring rod 7. An electric push rod 9 is hinged to the outer wall of the conical clamping ring 8. The bottom of the electric push rod 9 is hinged to the inner wall of the bracket 1. The electric push rod 9 can drive the conical clamping ring 8 to rotate around the shaft 5. When the two conical clamping rings 8 rotate and close, the flat paper can be bent and pressed onto the conical column 2, thereby achieving the curling of the cup body.

[0025] Please see Figure 1-5A guide plate 10 is fixedly fitted to the front end of the shaft 5. A limiting rod 11 corresponding to the conical clamping ring 8 is fixedly installed on the side wall of the bracket 1. A belt conveyor 13 is installed on the inner bottom wall of the bracket 1 via a conveyor mounting frame 12. A protruding plate 23 is fixedly installed on the rotating ring of the rotating ring 7. One end of the guide plate 10 contacts and is flush with the protruding plate 23, and the other end of the guide plate 10 contacts and is flush with the belt conveyor 13. Flat paper is transferred to the guide plate 10 via the belt conveyor 13. The guide plate 10 and the protruding plate 23 can lift the flat paper, while the front end of the flat paper is restricted by the limiting piece 6. Then the entire flat paper will be located on the two conical clamping rings 8.

[0026] Please see Figure 1-5 An air nozzle 19 is fixedly installed on the inner wall of the support 1 via a support 18. The air nozzle 19 is located below the cone column 2 and is inclined. The other end of the air nozzle 19 is connected to the air supply pump assembly 20 via a hose. The air supply pump assembly 20 is fixedly installed on the outside of the support 1. When the air supply pump assembly 20 is running, its gas is ejected from the air nozzle 19, and the airflow will enter the gap between the cup body and the cone column 2 to pre-relax the rolled cup body.

[0027] Please see Figure 1-5 A cylinder 14 is fixedly installed on the outside of the bracket 1. A front pusher 15 is fixedly installed at the output end of the cylinder 14. The front pusher 15 consists of a crossbar and an L-shaped rod. The L-shaped rod is installed at both ends of the crossbar and is elastic. A cup pusher block 16 is fixedly installed at the end of the front pusher 15. A groove 17 corresponding to the cup pusher block 16 is opened on the outside of the cone column 2. The elastic L-shaped rod allows the cup pusher block 16 to fit tightly against the inner wall of the groove 17. The cylinder 14 can drive the front pusher 15 to move forward, and then the cup pusher block 16 moves forward along the groove 17. The cup pusher block 16 can pull the loose, curled cup body off the cone column 2.

[0028] Please see Figure 1-5 A cylinder 21 is fixedly installed on the top of the bracket 1. A hot-pressing bevel head 22 is fixedly installed at the output end of the cylinder 21. The hot-pressing bevel head 22 is inclined and parallel to the cone column 2. An electric heating wire is embedded inside the hot-pressing bevel head 22. The cylinder 21 can drive the hot-pressing bevel head 22 to move downward, and the hot-pressing bevel head 22 will hot-press and seal the junction of the curled cup body on the cone column 2.

[0029] Please see Figure 1-5 The electric push rod 9, belt conveyor 13, cylinder one 14, air supply pump group 20 and cylinder two 21 are all electrically connected to the PLC controller. The finished components mentioned above are all references to existing technologies, and this application will not elaborate on them in detail. When using them, the preferred option can be selected under the premise of meeting the driving conditions.

[0030] Working principle: During use, the paper in the cup is conveyed by the belt conveyor 13 to the guide plate 10 and the convex plate 23. The front end of the paper in the cup is blocked by the limiting piece 6, and then the paper in the cup will be located between the two conical clamping rings 8. At the same time, the paper in the cup is supported by the guide plate 10 and the convex plate 23.

[0031] By synchronously controlling two electric push rods 9 to rotate and close the conical clamping rings 8, the flat paper of the cup body will be pressed onto the conical column 2; while controlling the two conical clamping rings 8 to rotate and open, the cylinder 21 will drive the hot pressing head 22 to hot press and seal the curved joint of the cup body.

[0032] When the hot press tilt head 22 is driven to move back to its original position, the air supply pump group 20 will also spray air from the air nozzle 19, and the gas will enter the gap between the cup body and the cone column 2, so that the cup body is pre-relaxed.

[0033] Then cylinder 14 will drive the front pusher 15 to move, and the cup pusher 16 will move forward along the slide 17. The cup pusher 16 will push the cup body from the cone 2 to the extension column 3 for placement, which will facilitate the next bottom sealing process.

[0034] In this process, the cup body is first loosened by airflow, and then the cup body is pulled down from the cone 2, so as to achieve the purpose of quick demolding after the cup body is rolled and heat-sealed.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A paper cup forming machine sealing mechanism, comprising a bracket (1), a tapered column (2) is fixedly installed on the side of the bracket (1), an extension column (3) is fixedly installed on the side of the tapered column (2), characterized in that: A shaft (5) is fixedly installed on the side wall of the bracket (1). Two staggered rotating rings (7) are rotatably installed on the outer side of the shaft (5). A conical clamp (8) is fixedly installed at the other end of the rotating ring (7). An electric push rod (9) is hinged to the outer wall of the conical clamp (8). The bottom of the electric push rod (9) is hinged to the inner wall of the bracket (1). A guide plate (10) is fixedly fitted on the front end of the shaft (5). A limiting rod (11) corresponding to the conical clamp (8) is fixedly installed on the side wall of the bracket (1). A belt conveyor (13) is installed on the inner bottom wall of the bracket (1) through a conveyor mounting frame (12).

2. The paper cup forming machine sealing mechanism according to claim 1, characterized in that: A limiting inclined plate (4) for limiting paper is fixedly installed on the outside of the extension column (3), and a limiting piece (6) for limiting paper is fixedly installed on the top of the shaft (5).

3. The paper cup forming machine sealing mechanism according to claim 1, characterized in that: A protruding plate (23) is fixedly installed on the swivel of the rotating rod (7). One end of the guide plate (10) is in contact with and flush with the protruding plate (23), and the other end of the guide plate (10) is in contact with and flush with the belt conveyor (13).

4. The paper cup forming machine sealing mechanism according to claim 3, characterized in that: A cylinder (14) is fixedly installed on the outside of the bracket (1). A front pusher (15) is fixedly installed at the output end of the cylinder (14). A pusher block (16) is fixedly installed at the end of the front pusher block (15). A sliding groove (17) corresponding to the pusher block (16) is opened on the outside of the cone column (2).

5. The sealing mechanism of a paper cup forming machine according to claim 4, characterized in that: An air nozzle (19) is fixedly installed on the inner wall of the bracket (1) via a support (18). The other end of the air nozzle (19) is connected to the air supply pump group (20) via a hose. The air supply pump group (20) is fixedly installed on the outside of the bracket (1).

6. The sealing mechanism of a paper cup forming machine according to claim 5, characterized in that: A cylinder two (21) is fixedly installed on the top of the bracket (1), and a hot pressing head (22) is fixedly installed at the output end of the cylinder two (21). An electric heating wire is embedded inside the hot pressing head (22).

7. The sealing mechanism of a paper cup forming machine according to claim 6, characterized in that: The electric push rod (9), belt conveyor (13), cylinder one (14), air supply pump group (20) and cylinder two ((21)) are all electrically connected to the PLC controller.