Shearing device of cigarette making machine

Abstract

The utility model provides a cigarette making machine strip shearing device which comprises a base, a rotating air cylinder and scissors, the base is arranged beside a cigarette strip, the rotating air cylinder is arranged on the base, and the scissors are arranged on the rotating air cylinder and used for shearing the cigarette strip. The rotary air cylinder drives the scissors to rotate in a plane parallel to the moving direction of the cigarette strips, so that the scissors have component speeds in the same direction in the moving direction of the cigarette strips. The scissors rotate under the action of the rotating air cylinder, have the component velocity in the moving direction of the cigarette bar in the process of shearing the cigarette bar, and move along with the cigarette bar, so that the scissors are prevented from hindering the movement of the cigarette bar.

Description

Technical Field

[0001] This utility model relates to the technical field of cigarette production equipment, specifically to a cigarette cutting device. Background Art

[0002] A cigarette cutting device in a cigarette rolling machine is used to break long cigarette bars. Its function is to automatically break unsealed sections of the cigarette bar, allowing the properly wrapped cigarette bar to enter the measuring tube. Existing cigarette cutting devices typically utilize a cutting support plate and a side plate to break the cigarette bar. Specifically, the cutting support plate is driven to rotate relative to the side plate, and the shearing force generated by the relative motion between the cutting support plate and the side plate breaks the cigarette bar. However, this cutting method is less effective for high-toughness cigarette bars, filter plates, and electromagnetically heated cigarette bars because the support plate and side plate do not have cutting blades. This results in burrs on the cut surface and incomplete breaks, affecting the quality of the cigarette bar. Furthermore, since the cigarette bar is constantly moving during the cutting process, the support plate acts as a stop in the direction of cigarette bar movement, affecting the normal movement of the cigarette bar. Contact between the cut surface of the cigarette bar and the support plate causes wrinkles, further impacting the quality of the cigarette bar. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the prior art by proposing a cigarette cutting device. The scissors rotate under the action of a rotary cylinder. During the cutting process, the scissors have a component velocity in the direction of cigarette movement and move with the cigarette, thus avoiding the scissors from obstructing the movement of the cigarette.

[0004] This utility model proposes a cigarette cutting device, including a base, a rotary cylinder and scissors. The base is disposed beside the cigarette strip, the rotary cylinder is disposed on the base, and the scissors are disposed on the rotary cylinder for cutting the cigarette strip. The rotary cylinder drives the scissors to rotate in a plane parallel to the direction of movement of the cigarette strip, so that the scissors have a component velocity in the same direction as the direction of movement of the cigarette strip.

[0005] The preferred technical solution of this utility model is as follows: the scissors include a fixed blade and a movable blade that are rotatably connected, and the cigarette stick passes between the fixed blade and the movable blade.

[0006] The preferred technical solution of this utility model is as follows: a base is fixedly mounted on the rotary cylinder, the fixed blade is fixedly mounted on the base, and the moving blade is rotatably connected to the fixed blade via a pin.

[0007] The preferred technical solution of this utility model is as follows: a stop ring is provided at the end of the pin shaft, and a spring is sleeved on the pin shaft. The two ends of the spring abut against the stop ring and the side of the moving blade, respectively, and the spring is kept in a compressed state.

[0008] The preferred technical solution of this utility model is as follows: both the moving knife and the fixed knife are provided with cutting edges, and the cutting edges of the moving knife and the fixed knife are arranged opposite to each other.

[0009] The preferred technical solution of this utility model is as follows: a linear cylinder for driving the moving blade to rotate is fixedly installed on the base, and the piston of the linear cylinder is movably connected to the end of the moving blade.

[0010] The preferred technical solution of this utility model is that the linear cylinder is a double-acting cylinder.

[0011] The cigarette cutting device of this utility model has the following beneficial effects:

[0012] 1. Under the action of the rotary cylinder, the scissors generate a component velocity in the same direction as the cigarette stick during the cutting process. The scissors move together with the cigarette stick, which can avoid the problem of the scissors obstructing the movement of the cigarette stick in the direction of the cigarette stick during the movement and cutting process, thus preventing wrinkles from appearing on the cut end face of the cigarette stick.

[0013] 2. The scissors rotate under the action of the rotary cylinder, realizing up and down swing, thereby controlling the scissors to move closer to or away from the tobacco bar. When working, the rotary cylinder drives the scissors to move closer to the tobacco bar for cutting. When not working, the rotary cylinder drives the scissors away from the tobacco bar for easy maintenance.

[0014] 3. The fixed blade and the moving blade are rotatably connected by a pin and kept in contact by a spring to eliminate the gap between the fixed blade and the moving blade. The fixed blade provides support for the tobacco stick and ensures that when the moving blade rotates, it moves relative to the tobacco stick. The shearing force applied to the tobacco stick by the rotating moving blade can smoothly cut the tobacco stick. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to denote similar elements. The drawings described below are some embodiments of the present invention, but not all embodiments. Other drawings will be readily available to those skilled in the art based on these drawings without any inventive effort.

[0016] Figure 1 This is a structural diagram of an embodiment of the present utility model.

[0017] Figure 2 This is a schematic diagram of the installation of the scissors according to an embodiment of the present invention.

[0018] In the diagram: 10. Rotary cylinder; 11. Base; 20. Scissors; 21. Fixed blade; 22. Moving blade; 23. Pin; 231. Stop ring; 24. Spring; 30. Smoking bar; 40. Base; 41. Linear cylinder. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0020] Please see Figure 1 A cigarette cutting device for a cigarette machine includes a rotary cylinder 10, scissors 20, and a base 11. The base 11 is disposed beside a cigarette strip 30, the rotary cylinder 10 is fixedly disposed on the base 11, and the scissors 20 are disposed on the rotary cylinder 10. The scissors 20 are used to cut the cigarette strip 30, and the rotary cylinder 10 is used to drive the scissors 20 to rotate, so that the scissors 20 rotates in a plane parallel to the moving direction of the cigarette strip 30. When the scissors 20 cuts the cigarette strip 30, the scissors 20 has a component velocity in the same direction as the moving direction of the cigarette strip 30. The scissors 20 move together with the cigarette strip 30, which can avoid the scissors 20 from obstructing the movement of the cigarette strip 30, improve the success rate of cutting the cigarette strip 30, and improve the cut surface quality of the cigarette strip 30.

[0021] The output end of the rotary cylinder 10 drives the scissors 20 to rotate in a plane. To ensure that the scissors 20 can smoothly cut the tobacco stick 30 and to avoid interference between the scissors 20 and the tobacco stick 30 during rotation, the rotation plane of the scissors 20 is parallel to the moving direction of the tobacco stick 30. In this embodiment, the scissors 20 is located above the tobacco stick 30, and the tobacco stick 30 is located between the two blades of the scissors 20. The base 11 is a plate and is vertically set beside the tobacco stick 30. The rotary cylinder 10 is fixed on the base 11, and the output end of the rotary cylinder 10 is provided with a base 40. The scissors 20 is set on the base 40. The rotary cylinder 10 drives the scissors 20 to rotate in a vertical plane. With the rotation axis of the rotary cylinder 10 as the boundary, the blade of the scissors 20 is closer to the moving direction of the tobacco stick 30.

[0022] Please see Figure 2When not in operation, the rotary cylinder 10 drives the base 40 to rotate clockwise, and the scissors 20 rotate upwards away from the tobacco stick 30. The blades of the scissors 20 are positioned above the tobacco stick 30, facilitating operation by the staff. When preparing for operation, the rotary cylinder 10 drives the base 40 to rotate counterclockwise, and the scissors 20 rotates downwards towards the tobacco stick 30. The scissors 20 rotates until their two blades are positioned on either side of the tobacco stick 30, ensuring that the scissors 20 can act on the tobacco stick 30. When in operation, the tobacco stick 30 moves (moving to the left in the diagram), and the scissors 20 cuts the tobacco stick 30. At the same time, the rotary cylinder 10 drives the base 40 to rotate clockwise at a small angle, driving the scissors 20 to rotate. The scissors 20 has a component velocity in the same direction as the tobacco stick 30's movement. The scissors 20 moves with the tobacco stick 30 and cuts synchronously, leaving space in the direction of the tobacco stick 30's movement to avoid obstructing the movement of the tobacco stick 30 during the cutting process and to improve the success rate of cutting the tobacco stick 30.

[0023] The scissors 20 include a fixed blade 21 and a movable blade 22 that are rotatably connected. Both the fixed blade 21 and the movable blade 22 are provided with blades. The fixed blade 21 is fixedly mounted on the base 40. The movable blade 22 is rotatably connected to the fixed blade 21 via a pin 23. The blades of the fixed blade 21 and the movable blade 22 are positioned opposite each other. A linear cylinder 41 is also provided on the base 40. The piston end of the linear cylinder 41 is movably connected to the end of the movable blade 22. When the piston end of the linear cylinder 41 extends or retracts, it drives the movable blade 22 to rotate around the pin 23, thereby bringing the blade of the movable blade 22 closer to the blade of the fixed blade 21. The movable blade 22 rotates relative to the tobacco stick 30, applying a shearing force to the tobacco stick 30 and cutting it.

[0024] Furthermore, a stop ring 231 is provided at the end of the pin 23, and a spring 24 is sleeved on the pin 23. The two ends of the spring 24 abut against the stop ring 231 and the moving blade 22 respectively. The spring 24 is always in a compressed state to press the moving blade 22 against the fixed blade 21, ensuring that the fixed blade and the moving blade 22 are in contact, reducing the distance between the fixed blade 21 and the moving blade 22. During the shearing process, the fixed blade 21 provides support for the tobacco stick 30, and the moving blade 22 moves towards the tobacco stick 30. The moving blade 22 moves relative to the tobacco stick 30 and applies shearing force to the tobacco stick 30, cutting the tobacco stick 30.

[0025] The linear cylinder 41 is a double-acting cylinder. Its piston end is rotatably connected to the end of the moving blade 22. The extension and retraction of the piston end of the linear cylinder 41 drives the moving blade 22 to swing around the pin 23, thereby driving the moving blade 22 to move relative to the tobacco strip 30 and achieving shearing.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cigarette-cutting device for a cigarette-making machine, characterized in that, The device includes a base (11), a rotary cylinder (10), and scissors (20). The base (11) is located beside the tobacco stick (30). The rotary cylinder (10) is located on the base (11). The scissors (20) are located on the rotary cylinder (10) for cutting the tobacco stick (30). The rotary cylinder (10) drives the scissors (20) to rotate in a plane parallel to the direction of movement of the tobacco stick (30), so that the scissors (20) have a component velocity in the same direction as the direction of movement of the tobacco stick (30).

2. The cigarette cutting device for a cigarette machine according to claim 1, characterized in that, The scissors (20) include a fixed blade (21) and a movable blade (22) that are rotatably connected, and the tobacco stick (30) passes between the fixed blade (21) and the movable blade (22).

3. The cigarette cutting device for a cigarette machine according to claim 2, characterized in that, A base (40) is fixedly mounted on the rotary cylinder (10), and the fixed blade (21) is fixedly mounted on the base (40). The moving blade (22) is rotatably connected to the fixed blade (21) via a pin (23).

4. A cigarette cutting device for a cigarette machine according to claim 3, characterized in that, A stop ring (231) is provided at the end of the pin (23), and a spring (24) is sleeved on the pin (23). The two ends of the spring (24) abut against the stop ring (231) and the side of the moving blade (22) respectively, and the spring (24) is kept in a compressed state.

5. A cigarette cutting device for a cigarette machine according to claim 3, characterized in that, Both the moving blade (22) and the fixed blade (21) are provided with cutting edges, and the cutting edges of the moving blade (22) and the fixed blade (21) are arranged opposite to each other.

6. A cigarette cutting device for a cigarette machine according to claim 3, characterized in that, A linear cylinder (41) for driving the moving blade (22) to rotate is fixedly installed on the base (40), and the piston of the linear cylinder (41) is movably connected to the end of the moving blade (22).

7. A cigarette cutting device for a cigarette machine according to claim 6, characterized in that, The linear cylinder (41) is a double-acting cylinder.

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