A plastic straw cutting device

Abstract

The utility model belongs to plastic straw processing equipment technical field, especially point to a kind of plastic straw shearing device;Including frame and rotation shaft being rotationally arranged on frame, there is flat cutting cutter head, bevel cutting cutter head on the rotation shaft interval setting, be provided with flat cutting blade on the outer circumferential wall of flat cutting cutter head, be provided with bevel cutting fixed blade on the outer circumferential wall of bevel cutting cutter head, the frame is provided with flat cutting pipeline corresponding to the flat cutting cutter head, still be provided with fixed cutter mounting seat on the frame in rotation shaft side, be provided with bevel cutting fixed blade through tool seat on fixed cutter mounting seat, the bevel cutting fixed blade, bevel cutting movable blade cooperation form scissors structure;The utility model is through flat cutting and bevel cutting integrated design and unique scissors type bevel cutting structure, successfully solved traditional straw shearing in burr, deformation, low efficiency and other pain points, realized efficient, high quality, automated plastic straw production.

Description

Technical Field

[0001] This utility model belongs to the technical field of plastic straw processing equipment, and specifically refers to a plastic straw cutting device. Background Technology

[0002] Currently, disposable plastic straws have a flat end and a pointed end. Chinese utility model patent (authorization announcement number CN 220807737 U, authorization announcement date 2024.04.19) discloses a cutting device for plastic straws. This cutting device includes a frame, on which a linkage shaft is rotatably connected. A front linkage wheel and a rear linkage wheel are mounted on the linkage shaft. A conveying channel for transporting a long strip of plastic straw forward is formed along the axial direction of the linkage shaft on the frame. An oblique cutting blade is inclinedly arranged on the outer ring wall of the front linkage wheel, and a flat cutting blade is arranged on the outer ring wall of the rear linkage wheel. Both the oblique and flat cutting blades can cut the plastic straw in the conveying channel, and the flat cutting blade corresponds to the middle position of the conveying channel. The distance between the oblique and flat cutting blades, and between the flat cutting blade and the end of the conveying channel, is equal to the length of the plastic straw.

[0003] The aforementioned cutting device has a beveled blade mounted separately on the linkage wheel, which relies solely on impact force to break the straw during cutting. This cutting method easily causes burrs and deformation at the beveled end of the straw, making it difficult to guarantee product quality and failing to meet the production requirements of high-quality straws. Summary of the Invention

[0004] The purpose of this invention is to provide a plastic straw cutting device that uses a scissor-type oblique cutting structure with a combination of a moving blade and a fixed blade to solve the defect of burrs at the oblique cutting end in the prior art.

[0005] This utility model is implemented as follows: A plastic straw cutting device includes a frame and a rotating shaft rotatably mounted on the frame. A flat cutting blade and a bevel cutting blade are spaced apart on the rotating shaft. A flat cutting blade is mounted on the outer peripheral wall of the flat cutting blade, and a bevel cutting blade is mounted on the outer peripheral wall of the bevel cutting blade. A pipe-cutting device is mounted on the frame corresponding to the flat cutting blade. A fixed blade mounting seat is also mounted on one side of the frame on the rotating shaft. A bevel cutting fixed blade is mounted on the fixed blade mounting seat via a blade holder. The bevel cutting fixed blade and the bevel cutting blade cooperate to form a scissor structure.

[0006] In the aforementioned plastic straw cutting device, the fixed blade mounting base is provided with a strip-shaped hole, and the blade holder is connected to the fixed blade mounting base through the strip-shaped hole. Adjusting the position of the blade holder on the strip-shaped hole can adjust the position of the oblique cutting fixed blade.

[0007] In the aforementioned plastic straw cutting device, the blade holder includes a blade holder body, and a groove is provided on one side of the blade holder body. The oblique cutting blade is fixed in the groove by screws.

[0008] In the aforementioned plastic straw cutting device, a positioning rod is stacked on the oblique cutting blade, and the positioning rod is used to define the position of the straw.

[0009] In the aforementioned plastic straw cutting device, the fixed blade mounting base is also equipped with a straw bulletproof mechanism.

[0010] In the aforementioned plastic straw cutting device, the straw bulletproof mechanism includes a mounting post, with a limiting rod fixed at the upper end of the mounting post, and the cantilevered end of the limiting rod extending above the straw.

[0011] The outstanding advantages of this utility model compared to the prior art are: This invention, through its integrated design of flat and oblique cutting and its unique scissor-type oblique cutting structure, successfully solves the pain points of traditional straw cutting, such as burrs, deformation, and low efficiency, and achieves efficient, high-quality, and automated production of plastic straws. Attached Figure Description

[0012] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a partial schematic diagram of the present invention.

[0013] In the diagram: 1. Frame; 2. Rotating shaft; 3. Flat cutting blade; 4. Bevel cutting blade; 5. Flat cutting blade; 6. Bevel cutting moving blade; 7. Flat cutting pipe; 8. Fixed blade mounting base; 9. Blade holder; 10. Bevel cutting fixed blade; 11. Strip hole; 12. Groove; 13. Positioning rod; 14. Mounting column; 15. Limiting rod. Detailed Implementation

[0014] The present invention will be further described below with reference to specific embodiments. See also: Figure 1-2 : This utility model provides a plastic straw cutting device, which includes a frame 1 and a rotating shaft 2 rotatably mounted on the frame 1. The rotating shaft 2 is driven to rotate by a drive mechanism, such as a motor drive belt structure or a motor gearbox structure. A flat cutting disc 3 and a bevel cutting disc 4 are spaced apart on the rotating shaft 2. A flat cutting blade 5 is provided on the outer peripheral wall of the flat cutting disc 3, and a bevel cutting moving blade 6 is provided on the outer peripheral wall of the bevel cutting disc 4. A flat cutting pipe 7 is provided on the frame 1 corresponding to the flat cutting disc 3. A fixed blade mounting seat 8 is also provided on one side of the frame 1 on the rotating shaft 2. A bevel cutting fixed blade 10 is provided on the fixed blade mounting seat 8 via a blade holder 9. The bevel cutting fixed blade 6 and the bevel cutting moving blade 10 cooperate to form a scissor structure.

[0015] It should be noted that the distance between the flat cutting disc 3 and the oblique cutting disc 4 on the rotating shaft 2 is adjusted according to the length of the straw. The connection between the flat cutting disc 3, the oblique cutting disc 4 and the rotating shaft 2 can be either a detachable fixed connection or both can be detachable fixed connections.

[0016] As can be seen from the above, this utility model, through its integrated design of flat and oblique cutting and its unique scissor-type oblique cutting structure, successfully solves the pain points of traditional straw cutting, such as burrs, deformation, and low efficiency, and achieves efficient, high-quality, and automated production of plastic straws.

[0017] The working principle of this utility model is as follows: The long, strip-shaped plastic tube is continuously fed into the flat-cutting pipe 7. The drive mechanism is activated, causing the rotating shaft 2 and the flat-cutting blade 3 and the oblique-cutting blade 4 fixed on it to rotate synchronously at high speed.

[0018] Flat cutting process: When the front end of the plastic tube is fed to the predetermined length, it is positioned on the oblique cutting blade 10. The flat cutting blade 5 on the flat cutting disc 3 rotates with the flat cutting disc 3 until it meets the outlet of the flat cutting pipe 7. The high-speed rotating flat cutting blade 5 instantly cuts the tube vertically, resulting in a straw blank of a predetermined length.

[0019] Beveling process: The oblique cutting moving blade 6 on the oblique cutting disc 4 rotates precisely to meet the oblique cutting fixed blade 10 fixed on the fixed blade mounting base 8. The moving blade 6 and the fixed blade 10 cooperate with each other to form a closed scissor structure, obliquely cutting off a section of the end of the straw blank, thereby forming a smooth, burr-free sharp oblique edge.

[0020] The cut straws fall into the receiving channel for collection.

[0021] To match the position of the oblique cutting blade 6, the fixed blade mounting base 8 is provided with a slotted hole 11. The blade holder 9 is connected to the fixed blade mounting base 8 through the slotted hole 11. Adjusting the position of the blade holder 9 in the slotted hole 11 can adjust the position of the oblique cutting fixed blade 10. A bolt passes through the blade holder 9, the slotted hole 11, and a nut is screwed onto the bottom surface of the fixed blade mounting base 8 to fix the blade holder 9. In addition, the blade holder 9 can rotate around the bolt to adjust the optimal shearing angle between the oblique cutting fixed blade 10 and the oblique cutting blade 6.

[0022] Generally, the major axis of the strip hole 11 is set parallel to the axis of the rotating shaft 2, which can reduce the need for repositioning the angle during adjustment.

[0023] Furthermore, the tool holder 9 includes a tool holder body, and a groove 12 is provided on the outer side wall of the tool holder body. The oblique cutting blade 10 is fixed in the groove 12 by screws.

[0024] Meanwhile, the present invention provides a positioning rod 13 stacked on the oblique cutting blade 10, the positioning rod 13 being used to define the position of the straw.

[0025] To prevent the straw from flying off during the cutting process, this utility model also provides a straw anti-bullet mechanism on the fixed blade mounting base 8, so that it falls into the receiving channel for collection.

[0026] Specifically, the straw bulletproof mechanism includes a mounting post 14, with a limiting rod 15 fixed at the upper end of the mounting post 14, the cantilevered end of the limiting rod 15 extending above the straw. In this embodiment, the mounting post 14 is a stud, and the limiting rod 15 is made of bent steel wire, with one end of the steel wire fixed to the stud and the other end cantilevered.

[0027] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A plastic straw cutting device, comprising a frame (1) and a rotating shaft (2) rotatably mounted on the frame (1), characterized in that: A flat cutting blade (3) and a slanted cutting blade (4) are spaced apart on the rotating shaft (2). A flat cutting blade (5) is provided on the outer peripheral wall of the flat cutting blade (3), and a slanted cutting moving blade (6) is provided on the outer peripheral wall of the slanted cutting blade (4). A flat cutting pipe (7) is provided on the frame (1) corresponding to the flat cutting blade (3). A fixed blade mounting seat (8) is also provided on the frame (1) on one side of the rotating shaft (2). A slanted cutting fixed blade (10) is provided on the fixed blade mounting seat (8) through a blade holder (9). The slanted cutting fixed blade (10) and the slanted cutting moving blade (6) cooperate to form a scissor structure.

2. The plastic straw cutting device according to claim 1, characterized in that: The fixed blade mounting base (8) is provided with a strip hole (11). The blade holder (9) is connected to the fixed blade mounting base (8) through the strip hole (11). Adjusting the position of the blade holder (9) on the strip hole (11) can adjust the position of the oblique cutting fixed blade (10).

3. The plastic straw cutting device according to claim 1, characterized in that: The tool holder (9) includes a tool holder body, and a groove (12) is provided on one side of the tool holder body. The oblique cutting blade (10) is fixed in the groove (12) by screws.

4. A plastic straw cutting device according to claim 3, characterized in that: A positioning rod (13) is stacked on the oblique cutting blade (10), and the positioning rod (13) is used to define the position of the straw.

5. A plastic straw cutting device according to any one of claims 1-4, characterized in that: The fixed knife mounting base (8) is also equipped with a suction tube bulletproof mechanism.

6. A plastic straw cutting device according to claim 5, characterized in that: The bulletproof straw mechanism includes a mounting post (14), and a limiting rod (15) is fixed at the upper end of the mounting post (14). The cantilever end of the limiting rod (15) extends above the straw.

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