Device for cutting two side openings at bottom of paper-plastic bottle

By designing a device for cutting double-sided openings at the bottom of paper-plastic bottles, and utilizing a cylinder-driven pressing block and punch anti-air design, symmetrical cuts can be made simultaneously on the cylindrical surface, solving the problem of low efficiency in existing technologies and improving the processing efficiency and product quality of paper-plastic bottles.

CN224169898UActive Publication Date: 2026-04-28TIANJIN ZHONGRONG GREEN PACKAGING TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TIANJIN ZHONGRONG GREEN PACKAGING TECH CO LTD
Filing Date
2025-05-14
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

Existing technologies make it difficult to make effective cuts on the curved surface of paper-plastic bottles, and it is also impossible to make symmetrical double-sided cuts on the cylindrical surface at the same time. This results in low production efficiency and makes it difficult to ensure the symmetry and consistency of the cuts, which cannot meet the market's demand for diversified and high-quality paper-plastic bottles.

Method used

Design a device for cutting double-sided openings at the bottom of paper-plastic bottles, including a bracket, a fixing plate, a positioning mechanism, a pressure block, and a punch. The pressure block is driven by a cylinder to fix the paper-plastic bottle. The punch's anti-cavity design achieves symmetrical cutting. The punch simultaneously cuts two symmetrical openings on the cylindrical surface under the push of the cylinder. The waste material is automatically collected and cleaned through an automatic unloading station.

Benefits of technology

It improves the production efficiency of paper-plastic bottles, ensures the symmetry and consistency of cuts, broadens the processing range of paper-plastic bottles, and meets more diverse product needs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a paper-plastic bottle bottom double-side-opening cutting device, which relates to the technical field of paper-plastic product processing and comprises a support, a fixing plate fixedly connected to the upper surface of the support, a positioning mechanism arranged on the upper surface of the fixing plate, and a first pressing block and a second pressing block arranged above the fixing plate and used for fixing products. When paper-plastic bottle products are machined, generated waste materials automatically fall to an automatic discharging position under the action of gravity, meanwhile, the punch automatically retracts and returns to the initial position under the action of the air cylinder to prepare for next-time machining, finally, an operator takes the machined paper-plastic bottle products out of the positioning mechanism, and the whole machining process is completed. The whole device can cut two symmetrical notches in the cylindrical surface at the same time, compared with a traditional machining mode that the two sides need to be machined respectively, the machining efficiency is greatly improved, the technological range of paper-plastic bottle machining is widened through notch operation on the arc surface, and more diversified product requirements are met.
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Description

Technical Field

[0001] This utility model relates to the field of paper-plastic product processing technology, and in particular to a device for cutting double-sided openings at the bottom of a paper-plastic bottle. Background Technology

[0002] Paper-plastic bottles are a common packaging container widely used in many industries such as food, beverages, and cosmetics. In the production and processing of paper-plastic bottles, the bottom cutting is a crucial step. In actual production, the bottom cutting operation of paper-plastic bottles typically involves the following structures and components:

[0003] 1. The product positioning structure is used to precisely place paper-plastic bottles, ensuring accurate processing position;

[0004] 2. The cylinder serves as a power source, providing power for the subsequent pressing and punching actions;

[0005] 3. The pressure block is used to fix the paper-plastic bottle and prevent it from shifting during processing.

[0006] Currently, the industry has tried various methods to solve the cutting problem of paper-plastic bottles. Some companies use manual cutting, but this method relies on the experience and skills of workers, resulting in poor quality consistency and extremely low efficiency, making it difficult to meet the needs of large-scale production. Other companies have introduced ordinary flat-surface cutting equipment, attempting to cut paper-plastic bottles by adjusting the tooling fixtures. However, due to the inherent design limitations of the equipment, it cannot well adapt to the curved and cylindrical structures of paper-plastic bottles, leading to poor results in actual operation.

[0007] However, the above-described implementation still has the following problems: regarding the arc-shaped cut, conventional processes are difficult to effectively cut on the arc surface, making it impossible to process some specially designed paper-plastic bottles. Regarding the simultaneous cutting of symmetrical cuts, it is impossible to cut two symmetrical cuts simultaneously on a cylindrical surface, resulting in low production efficiency and difficulty in ensuring the symmetry and consistency of the cuts, failing to meet the market's demand for diverse and high-quality paper-plastic bottles. This application proposes a solution to this problem: a device for cutting double-sided openings at the bottom of paper-plastic bottles. This device can solve the problem of not being able to cut on the arc surface and can also simultaneously cut two symmetrical cuts on a cylindrical surface, improving production efficiency and product quality. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a device for cutting double-sided openings at the bottom of paper-plastic bottles. This solves the problem that conventional processes are difficult to effectively cut on arc surfaces, making it impossible to process some specially designed paper-plastic bottles. Furthermore, in terms of simultaneously cutting symmetrical cuts, it is impossible to cut two symmetrical cuts on a cylindrical surface at the same time, resulting in low production efficiency and difficulty in ensuring the symmetry and consistency of the cuts.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A device for cutting the bottom of a paper-plastic bottle with two sides includes a bracket, a fixing plate fixedly connected to the upper surface of the bracket, a positioning mechanism on the upper surface of the fixing plate, a pressure block 1 and a pressure block 2 for fixing the product above the fixing plate, a punch 1 and a punch 2 for cutting the product respectively on the back of the pressure block 1 and the pressure block 2, and a punch clearance 1 and a punch clearance 2 provided on the annular side of the positioning mechanism.

[0011] Preferably, cylinder one and cylinder two are fixedly installed on the upper surface of the fixed plate, and the pistons of cylinder one and cylinder two are fixedly connected to punch one and punch two, respectively.

[0012] Preferably, punch one and punch two correspond to punch clearance one and punch clearance two, respectively, and the lower surface of the positioning mechanism is provided with an automatic unloading position.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. After the product is fixed in place by the pressure block, punch one and punch two, driven by their respective cylinders, pass through the positions of punch clearance one and punch clearance two. The punch clearance design is to allow the punch to reach the position to be punched smoothly and avoid interference with other parts. After the punch reaches the position, it cooperates with the corresponding structure to punch both sides of the bottom of the paper-plastic bottle at the same time, completing the side cutting operation of the product. Two symmetrical cuts are cut on the cylindrical surface at one time. Compared with the traditional processing method, which requires processing both sides separately, the processing efficiency is greatly improved.

[0015] 2. After punching, the waste material generated falls automatically to the automatic unloading position under gravity, realizing automatic collection and cleaning of waste. At the same time, the punch retracts automatically under the action of the cylinder, returning to the initial position, preparing for the next processing. Finally, the operator removes the processed paper-plastic bottle product from the positioning mechanism, completing the entire processing flow. By cutting on the arc surface, the processing range of paper-plastic bottles is broadened, meeting more diverse product needs. Attached Figure Description

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0017] Figure 1 This is an overall structural diagram of the present invention;

[0018] Figure 2 This is an overall front view of the present invention;

[0019] Figure 3 This is a structural diagram of the positioning mechanism of this utility model.

[0020] Legend: 1. Positioning mechanism; 2. Cylinder 1; 3. Cylinder 2; 4. Punch clearance 1; 5. Punch clearance 2; 6. Pressing block 1; 7. Pressing block 2; 8. Automatic unloading position; 9. Punch 1; 10. Punch 2; 11. Support; 12. Fixing plate. Detailed Implementation

[0021] This application provides a device for cutting double-sided openings at the bottom of paper-plastic bottles. This effectively solves the problem that conventional processes are unable to make effective cuts on arc surfaces, making it impossible to process some specially designed paper-plastic bottles. In terms of simultaneously cutting symmetrical cuts, it is impossible to cut two symmetrical cuts on a cylindrical surface at the same time, resulting in low production efficiency and difficulty in ensuring the symmetry and consistency of the cuts. The device for cutting double-sided openings at the bottom of paper-plastic bottles solves the problem of not being able to cut on arc surfaces and can also cut two symmetrical cuts on a cylindrical surface at the same time, improving production efficiency and product quality.

[0022] Example

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, the technical solution in this application embodiment effectively solves the problem that conventional processes are difficult to make effective cuts on arc surfaces, making it impossible to process some specially designed paper-plastic bottles. Furthermore, regarding the simultaneous cutting of symmetrical cuts, it is impossible to simultaneously cut two symmetrical cuts on a cylindrical surface, resulting in low production efficiency and difficulty in ensuring the symmetry and consistency of the cuts. The overall approach is as follows:

[0024] To address the problems existing in the prior art, this utility model provides a device for bottom-cutting double-sided openings of paper-plastic bottles, including a bracket 11. A fixing plate 12 is fixedly connected to the upper surface of the bracket 11. A positioning mechanism 1 is provided on the upper surface of the fixing plate 12. A pressure block 6 and a pressure block 7 for fixing the product are provided above the fixing plate 12. Punches 9 and 10 for cutting the product are respectively provided on the opposite sides of the pressure blocks 6 and 7. Punch clearance 4 and punch clearance 5 are provided on the annular side of the positioning mechanism 1. First, the paper-plastic bottle is placed on the positioning mechanism 1. The positioning mechanism 1 accurately positions the product to determine its position, preparing for subsequent processing operations. After pressing the start button, cylinders 2 and 3... Cylinder 2 (3) starts working simultaneously. Pressing blocks 1 (6) and 2 (7) move under the drive of the cylinders, first pressing down on the paper-plastic bottle product. The pressure of the pressing blocks is used to firmly fix the product, preventing it from shifting during the subsequent punching process, thus ensuring the accuracy and stability of the processing. After the pressing blocks fix the product, punches 1 (9) and 2 (10) pass through the positions of punch clearance 1 (4) and punch clearance 2 (5) under the push of their respective cylinders. The punch clearance is designed to allow the punches to reach the punching position smoothly without interfering with other components. After the punches reach the position, they cooperate with the corresponding structure to punch both sides of the bottom of the paper-plastic bottle simultaneously, completing the side cutting operation of the product and cutting two symmetrical cuts on the cylindrical surface in one go.

[0025] Cylinder 1 2 and Cylinder 2 3 are fixedly installed on the upper surface of the fixed plate 12. The pistons of Cylinder 1 2 and Cylinder 2 3 are fixedly connected to Punch 1 9 and Punch 2 10 respectively. Punch 1 9 and Punch 2 10 correspond to Punch Clearance 1 4 and Punch Clearance 2 5 respectively. An automatic unloading position 8 is set on the lower surface of the positioning mechanism 1. After punching, the generated waste material automatically falls to the automatic unloading position 8 under the action of gravity, realizing the automatic collection and cleaning of waste material. At the same time, the punch automatically retracts under the action of the cylinder and returns to the initial position, preparing for the next processing. Finally, the operator takes the processed paper-plastic bottle product out of the positioning mechanism 1, completing the entire processing process. The device can cut two symmetrical cuts on the cylindrical surface at the same time. Compared with the traditional processing method, which requires processing on both sides separately, it greatly improves the processing efficiency. Moreover, by cutting on the arc surface, the process range of paper-plastic bottle processing is broadened, meeting more diversified product needs.

[0026] Among them, the positioning mechanism 1 is used to accurately place the paper-plastic bottle product, determine its position, provide a benchmark for subsequent processing operations, and ensure accurate processing position;

[0027] Cylinder 2 serves as a power source, providing power to the action of pressure block 6 and punch 9, driving them to move in order to complete the fixing and cutting operations;

[0028] Cylinder 2 3 serves as a power source, providing power for the movement of pressure block 2 7 and punch 2 10, driving them to move and achieve product fixing and cutting operations;

[0029] Punch clearance 4 provides clearance for the movement of punch 9, preventing punch 9 from interfering with other components during movement and ensuring smooth punching;

[0030] Punch clearance 25 provides clearance for the movement of punch 210, preventing punch 210 from colliding with other components during operation, and ensuring that the punching operation is carried out normally.

[0031] Press block 6, driven by cylinder 2, presses down on the paper-plastic bottle product to prevent the product from shifting during subsequent punching and cutting, thus ensuring processing accuracy and stability.

[0032] Pressing block 2 7, driven by cylinder 2 3, presses the paper-plastic bottle product to prevent the product from moving during punching and to ensure the accuracy and consistency of the cut.

[0033] Automatic unloading position 8 is used to collect the waste generated after punching. The waste automatically falls to this position under the action of gravity, realizing automatic waste cleaning.

[0034] Under the push of cylinder 2, punch 9 passes through punch clearance 4 and cooperates with the corresponding structure to punch one side of the bottom of the paper-plastic bottle, completing the side cutting operation.

[0035] Under the push of cylinder 3, punch 10 passes through punch clearance 5 and cooperates with the corresponding structure to punch and cut the other side of the bottom of the paper-plastic bottle, achieving a double-sided cut.

[0036] The bracket 11 supports the entire paper-plastic bottle bottom-cut double-sided opening device, providing a mounting base for other components and ensuring the overall stability of the device;

[0037] The fixing plate 12 is fixed on the bracket 11 and is used to install the positioning mechanism 1, cylinder 1 2, cylinder 2 3 and other components, so that the relative positions of each component are fixed.

[0038] Working principle:

[0039] First, the paper-plastic bottle is placed on the positioning mechanism 1. The positioning mechanism 1 precisely positions the product to determine its location, preparing it for subsequent processing operations. After pressing the start button, cylinders 2 and 3 start working simultaneously. Pressing blocks 6 and 7 move under the drive of the cylinders, pressing down on the paper-plastic bottle to firmly fix it in place, preventing displacement during subsequent punching and ensuring processing accuracy and stability. After the pressing blocks have fixed the product, punches 9 and 10, pushed by their respective cylinders, pass through punch clearances 4 and 5. The punch clearances are designed to allow the punches to reach the required punching position smoothly, avoiding interference with other components. Once the punches reach their positions, they engage with the corresponding structures. The device simultaneously punches two symmetrical cuts on the bottom sides of the paper-plastic bottle, completing the side-cutting operation. Two symmetrical cuts are made on the cylindrical surface in one go. After punching, the waste material automatically falls to the automatic unloading position 8 under gravity, realizing automatic collection and cleaning of waste material. At the same time, the punch automatically retracts under the action of the cylinder, returning to the initial position, preparing for the next processing. Finally, the operator removes the processed paper-plastic bottle product from the positioning mechanism 1, completing the entire processing process. The device can simultaneously cut two symmetrical cuts on the cylindrical surface, which greatly improves processing efficiency compared to the traditional processing method that requires processing both sides separately. Furthermore, by cutting on the arc surface, the processing range of paper-plastic bottles is broadened, meeting more diverse product needs.

[0040] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A device for cutting the bottom of a paper-plastic bottle with two sides, comprising a bracket (11), wherein a fixing plate (12) is fixedly connected to the upper surface of the bracket (11), characterized in that, The upper surface of the fixing plate (12) is provided with a positioning mechanism (1), and the upper part of the fixing plate (12) is provided with a pressure block one (6) and a pressure block two (7) for fixing the product. Among them, the back sides of the first pressing block (6) and the second pressing block (7) are respectively provided with a punch (9) and a punch (10) for cutting the product.

2. The device for cutting the bottom of a paper-plastic bottle with two sides as described in claim 1, characterized in that: The positioning mechanism (1) has punch clearance one (4) and punch clearance two (5) on its annular side.

3. The device for cutting the bottom of a paper-plastic bottle with two sides as described in claim 1, characterized in that: Cylinder 1 (2) and Cylinder 2 (3) are fixedly installed on the upper surface of the fixing plate (12).

4. The device for cutting the bottom of a paper-plastic bottle with two sides as described in claim 3, characterized in that: The pistons of cylinder one (2) and cylinder two (3) are fixedly connected to punch one (9) and punch two (10), respectively.

5. The device for cutting the bottom of a paper-plastic bottle with two sides as described in claim 1, characterized in that: Punch 1 (9) and Punch 2 (10) correspond to Punch Clearance 1 (4) and Punch Clearance 2 (5) respectively.

6. The device for cutting the bottom of a paper-plastic bottle with two sides as described in claim 1, characterized in that: The lower surface of the positioning mechanism (1) is provided with an automatic unloading position (8).