CN201079000Y - Smoked sheet cutting device - Google Patents

Abstract

The utility model discloses a tobacco sheet cutting device, which changes the cutting edge of the cutting knife into two left and right circular arc cutting edges, and a three-pointed knife point is arranged at the center of the left and right circular arc cutting edges, and the knife point The cutting edge is that the horizontal line of the cutter cutting edge extends downwards and is tangent to the arc cutting edges on both sides. The lower side of the cutter is provided with a cutter plate, the front end of the cutter plate is provided with a knife-edge groove, and the front bottom of the knife-edge groove is provided with an arc backing plate corresponding to the left and right circular arc edges of the cutter. The utility model enables the knife-edge groove of the cutter plate installed on the discharge arm to cooperate better with the cutter, so that the cut cigarette blocks can smoothly fall into the guide plate without sticking.

Description

Smoke cutting device

Technical field:

The utility model relates to a tobacco processing machine, in particular to a tobacco sheet cutting tool.

Background technique:

At present, most of the slitting knives used for cigarette slices are straight-line cutting edges. During the cutting process, due to the material of the cutting knife, the manufacturing process, the coordination of the cutting edge and the cutting plate, and design defects, there are problems such as insufficient cutting and sticking of cigarette blocks. Failure to quickly drop from the unloading arm to the belt conveyor in time causes intermittent material delivery and cannot ensure a constant flow of material. At the same time, due to the sticking of the cigarette block, the cigarette block is easy to get stuck in the unloading arm when the unloading arm returns. At the exit of the conveyor belt, it needs to be shut down for cleaning, which not only affects the normal operation of the equipment, but also brings serious unsafe factors.

Invention content:

The purpose of the utility model is to provide a cutting device for cutting cigarettes thoroughly, so as to avoid sticking of cigarettes caused by improper cutting, blocking the outlet of the conveyor belt, affecting normal production and operation and causing unsafe factors.

In order to achieve the above purpose, the utility model adopts the following design scheme: the tobacco sheet cutting device includes a frame, a conveyor belt, a discharge arm, a cutter and a cutter plate. The shape and angle of the cutting edge of the cutter are very important to the force of the cutting object. According to relevant reports, the cutting motion of the oblique cut can reduce the force by about 30% compared with the cutting motion of the straight cut. Therefore, in On the premise of not changing the main body structure of the machine, the straight cutting edge of the cutting knife is changed to two circular arc cutting edges on the left and right according to the bevel cutting principle of the cutting knife. The tip is the main point of force in the center of the cutter, and its tip edge protrudes 15-30mm downwards from the horizontal line of the cutter edge, and is tangent to the arc edges on both sides. Since the cutting knife moves straight down and cuts into the cigarette block step by step, the contact point on the arc cutting edge cuts down gradually with the cutting knife, and cuts into the cigarette block successively after separation, and its pressure is greatly reduced, thus forming an oblique cut. way to achieve the purpose of labor saving. In order to ensure that the edge groove of the cutter plate installed on the discharge arm has a good fit with the cutter, so that the cut cigarettes can smoothly fall into the guide plate without sticking, a discharge arm is provided on the lower side of the cutter , A cutter plate is installed on the discharge arm, the front end of the cutter plate is provided with a knife-edge groove, and the front bottom of the knife-edge groove is provided with an arc backing plate corresponding to the left and right circular arc edges of the cutter. The shape of the cutter backing plate matches the shape of the cutter edge, and at the same time, the matching relationship between the cutter plate and the outer arc of the conveyor belt drum is ensured. In view of the material structure, chemical composition and physical characteristics of tobacco leaves, it has strong elasticity, toughness and resistance to crushing, and contains high sugar and oil content. The cutting resistance of tobacco leaves and the resistance against being cut are quite large. Therefore, when the cutting knife is cutting, the cutting edge of the cutting knife is easily adhered to part of the soot, which increases the cutting resistance. According to the characteristics of cutting tobacco leaf raw materials, the material for making cutters is required not only to have higher hardness and strength, but also to have stronger toughness. Traditional cutters can no longer meet the requirements for use. The cutting knife of the utility model is made of alloy material chromium 12 molybdenum vanadium Cr12MOV, and the cutting knife is formed and roughly ground, and then treated with tungsten carbide, the infiltration thickness is 1-1.5mm, and the infiltration hardness is HRC≥64.

The utility model has the advantages of scientific design and unique structure. Due to the improvement of the cutting capacity and durability of the improved cutting device, the cutting capacity has been increased from 20,000 large boxes to 98,000 large boxes, which is nearly 5 times higher, and the material is broken by 3-5 times each working day. The second phenomenon turned into a complete solution to the occurrence of such phenomena.

Below in conjunction with accompanying drawing, describe in further detail:

Description of drawings:

Figure 1 is a schematic diagram of the cutting edge structure.

Figure 2 is a schematic diagram of the assembly of the cutter and the cutter board.

Detailed ways:

The edge of the cutting knife 1 shown in Fig. 1, 2 is made up of left arc edge 2, right arc edge 4, and the center of left and right arc edge is provided with tricuspid knife point 3, and its edge The cutting edge of the cutting knife extends downward for 15-30mm from the horizontal line of the cutting edge, and is tangent to the arc cutting edges on both sides. The lower side of the cutter is provided with a discharge arm, the discharge arm is provided with a cutter plate 5, the front end of the cutter plate 5 is provided with a knife-edge groove 6, and the front bottom of the knife-edge groove is provided with two pieces that are in the same circle as the cutter left and right. The arc backing plate 7 corresponding to the arc cutting edge. The utility model makes the edge groove of the cutter plate installed on the unloading arm better cooperate with the cutter, so that the cut cigarette blocks can smoothly fall into the guide plate without sticking.

Claims (4)

1. A tobacco sheet cutting device, comprising a frame, a conveyer belt, a discharge arm, a cutter and a cutter plate, is characterized in that: the cutting edge of the cutter (1) is composed of a left circular arc edge (2), The right arc cutting edge (4) is composed of a three-pointed knife point (3) at the center of the left and right arc cutting edges, and the lower side of the cutting knife (1) is provided with a discharge arm, and the cutting knife is installed on the discharge arm plate (5). 2. The tobacco sheet cutting device according to claim 1, characterized in that: the three-pointed knife point (3) is the central force point of the cutter, and its cutting edge protrudes 15- 30mm, and tangent to the arc cutting edges on both sides. 3. The tobacco sheet cutting device according to claim 1, characterized in that: the front end of the cutter plate (5) is provided with a knife-edge groove (6), and the front bottom of the knife-edge groove is provided with two pieces on the left and right sides of the knife-edge groove. The arc backing plate (7) corresponding to the arc cutting edge. 4. The smoke sheet cutting device according to claim 1, characterized in that: the cutting knife (1) is made of alloy material chromium 12 molybdenum vanadium Cr12MOV, after forming and rough grinding, it is then treated with tungsten carbide, and the infiltration thickness 1-1.5mm, infiltration hardness HRC≥64.

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