JPH0361769B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to the construction of a carding machine wound with metallic wire.

Prior Art and its Problems In recent years, efforts have been made to increase the production volume per carding machine in line with efforts to save labor in the spinning process.

Conventionally, in order to increase production, this high-production carding machine has set the working angle of the metallic wire for the cylinder to 75° or more and 78° or less, and the working angle of the metallic wire for the dolpher between 60° or more and 65° or less, that is, the working angle of the metallic wire for the cylinder has been set at 60° or more and 65° or less. The difference in the working angle of the cylinder was set to 10° or more and 18° or less, increasing the transition rate from cylinder to cylinder.

However, when the production reaches a high production range of 50 kg/hr or more, the fiber density per unit area on the cylinder surface increases, the fibers are not opened sufficiently and shift to dots, and the neps in the sliver increase. There is a problem with doing so.

In addition, when increasing the number of needle heads of the cylinder metallic wire by increasing the amount of fiber, there is a method of reducing the thickness of the cylinder metallic wire.
There is a problem in that leaf gas tends to get stuck between the teeth and actually impedes the carding action. Conversely, the number of threads on the metallic wire may be increased, but if the number of threads increases too much, there is a problem in that the productivity in the process of punching out teeth of the metallic wire decreases.

The object of the present invention is to solve the above-mentioned conventional problems, and to provide a carding machine that is most suitable for high production by making the metallic wire for the cylinder and the metallic wire for the dolphin into specific shapes, and combining them. shall be.

Means for Solving Problems The present invention has a working angle X of 60° or more and less than 70°, and a tooth depth B.
0.5mm or more and 0.85mm or less, Thickness C is 0.5mm or more and 0.7mm
The following metallic wire is wound around the drum of the cylinder, and the metal wire with the working angle It is characterized by

Embodiment An embodiment of the present invention will be described below based on the drawings.

FIG. 1 shows a metallic wire for a cylinder used in a carding machine according to an embodiment of the present invention, and FIG. 2 shows a metallic wire for a carding machine.

The carding machine of the present invention uses metallic wire for cylinder with needle height A: 2.8 mm, tooth depth B: 0.5 mm, and thickness C:
0.5mm, edge height D: 1.5mm, tooth tip thickness E: 0.04mm,
Root thickness F: 0.25mm, tooth tip length G: 0, working angle X: 63°, back angle Y: 28°, number of threads M: 17 threads/25.4mm,
Number of needle heads P: 864/(25.4mm) ² , needle height A: 5.0mm, tooth depth B:
3.0.mm, Thickness C: 0.85mm, Edge depth D: 1.3mm, Tip thickness E: 0.15mm, Root thickness F: 0.65mm, Tip length G: 0.15mm, Working angle X: 60°, back angle Y: 43°, number of threads M: 12 threads/25.4mm, number of needle heads P: 359/(25.4mm)
Configure as ² .

The working angle X of the metallic wire for the cylinder above is
A suitable angle is 60° or more and less than 70°, and even in high-speed, high-production areas, the fibers will not fly out due to centrifugal force and sufficient carding action can be performed. Note that if the working angle is less than 60°, the transition from cylinder to dolpher will be poor, and the number of neps will increase dramatically. Also, tooth depth B
is 0.5mm or more and 0.85mm or less, thickness C is 0.5mm or more and 0.7mm
Hereinafter, the appropriate number of threads is 16 or more and 18 or less, and in high-speed, high-production areas, even if the fiber density per unit area on the cylinder surface is high, sufficient carding action can be performed.

The working angle X of the metallic wire for the dolphin combined with the metallic wire for the cylinder above is 55° or more and 65°.
Hereinafter, the best tooth depth B is 2.2 mm or less, so that the fibers can sufficiently grip the fibers from the cylinder even under high production spinning conditions.

Figure 3 shows an enlarged view of the teeth of a metallic wire for cylinders. If there is a bending point L at the back and tooth bottom as in the conventional case shown by the broken line, a vortex will be generated in the air flow and a good carding effect will not be achieved. It is preferable to set the back angle Y to 25° or more and 40° or less, and to form a gentle concave curve from the back of the tooth tip to the bottom of the tooth.

Function The metallic wire for cylinders and the metallic wire for dolphins were wound around a high-speed, high-production carding machine, and a spinning comparison test with conventional metallic wire was conducted.The results are as follows.

Spinning conditions Fiber: For 6 to 20's of cotton Production volume: 50Kg/hr Cylinder rotation speed: 480r.pm Number of nets: The conventional carding machine was 150 ke/g, but with the carding machine of the present invention, it is 50 ke/g. Summer.

When the cylinder metallic wire is wound around a drum and rotated as shown in Fig. 4, the pressure difference △P (where △P = The pressure P ₂ ) at the thickness P ₁ − of is the pressure loss between two points,
In this example, the tooth depth B is a: 0.5 mm, b: 0.8
When mm and c are changed to 1.0 mm, the pressure loss through which the air flow passes through the teeth is as shown in Figure 5.

It can be seen that even if the cylinder rotation speed is changed, the pressure loss increases as the dimensions become smaller. A large pressure loss means that the metallic wire has a large effect on the air, which improves the carding effect.

Note that if the tooth depth B is less than 0.5 mm, the number of neps will increase because it is necessary to transfer and grip the cotton mass from the tip.

Furthermore, if the value of needle height A - edge height D is made smaller, the pressure loss will increase and the carding effect will increase, so it is better to make the above value smaller than edge height D.
Furthermore, as the edge thickness C becomes thinner, the thickness loss tends to increase.

Figure 6 shows the production amount: A ₁ : 50Kg/hr, A ₂ : 40Kg/hr.
hr, A ₃ 25Kg/hr, the relationship between the tooth depth B of the cylinder metal wire and the number of neps, and FIG. 7 shows the relationship between the working angle X and the number of neps.

Effects of the Invention As described above, the present invention is a carding machine in which the metallic wire wound around the cylinder or dolphin is configured in a specific shape and combined, so that the number of neps can be increased in high-speed, high-production spinning. This significantly reduces the amount of fiber, making it possible to spin a sliver with good fiber parallelism.

In addition, although the metal wire for the cylinder is thin, the tooth depth is shallow, so clogging with leaf debris is reduced.
Further, since the number of threads of the metallic wire is appropriate, productivity can be improved in the wire manufacturing process.

Furthermore, the production capacity per carding machine is 30kg/
This invention has excellent effects such as making it possible to produce 50 to 80 kg/hr rather than hr.

[Brief explanation of drawings]

Fig. 1 shows a metallic wire for a cylinder used in one embodiment of the carding machine of the present invention, and Fig. 1 is a side view;
B shows a front view, FIG. 2 shows a metallic wire for the same cylinder, A is a side view, B shows a front view, FIG. 3 shows an enlarged view of the teeth of the metallic wire for the cylinder, and FIG. 4 shows a metallic wire for the same cylinder. Shows the case where the wire is wound around the drum, A is a cross-sectional view, B is an explanatory diagram,
FIG. 5 is a curve diagram showing the relationship between the cylinder rotational speed and pressure loss, and FIGS. 6 and 7 are curve diagrams showing the relationship between the tooth depth, working angle, and number of neps of the metallic wire for the cylinder. A is needle height, B is tooth depth, C is thickness, D is edge height, E is tip thickness, F is root thickness, G is tip length, X is working angle, Y is the dorsal angle.

Claims (1)

[Claims] 1 Working angle X is 60° or more and less than 70°, tooth depth B is 0.5mm
and 0.85 mm or less, and the thickness C is 0.5 mm or more and 0.7 mm or less, and the value of needle height A - edge height D is the edge height D.
Wrap a smaller metallic wire around the drum of the cylinder and increase the working angle X to 55° or more.
A carding machine characterized in that a metallic wire with a tooth depth B of 65° or less and a tooth depth B of 2.2 mm or more and 3.0 mm or less is wound around a card drum. 2 Determine the back angle Y of the metallic wire for the cylinder.
The carding machine according to claim 1, wherein the carding machine has an angle of 25° or more and 40° or less, and is formed with a gentle concave curve from the back of the tooth tip to the tooth bottom.