JPH0796558A - Synthetic resin net manufacturing equipment - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a synthetic resin net manufacturing apparatus which has a flat cut surface, is easy to work, and is easy to manufacture. [Structure] A synthetic resin net manufacturing apparatus in which a resin extruded from an extruder 1 is guided to a net forming die to form a net-shaped cylindrical body 8 which is cooled and cut to form a plate-shaped net. 1. A branch pipe 4 is provided in a resin passage extending from the downstream of 1 to the upstream of the die, a flow rate adjusting valve 5 is provided in the branch pipe 4, and the extrusion die 6 is connected to a strip-shaped body. Is provided in the vicinity of the net-shaped tubular body 8 extruded into the cooling water tank 7, and a cutting device 10 is provided downstream of the cooling water tank 7 for cutting the net-shaped tubular body 8 welded with the belt-shaped body at the strip-shaped body. ing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin net for guiding a resin extruded from an extruder to a net forming die to form a net-like cylindrical body, which is cooled and cut to form a plate-like net. Manufacturing equipment

[0002]

2. Description of the Related Art A molten resin extruded by an extruder is introduced into a net forming die, a tubular net coming out of the die is sized and solidified in a water tank, and the tubular net is used in a take-up device. A technique for producing a plate-shaped resin net by continuously cutting in the wake is known.

[0003]

However, in the above technique, since the net-shaped portion is directly cut, since the pin-shaped resin exists on the cut surface, it is difficult for an operator who handles the net to handle it easily. Hurts, and in the worst case, there is a problem such as injury.

Therefore, it is an object of the present invention to provide a synthetic resin net manufacturing apparatus which has a flat cut surface, is easy to work, and is easy to manufacture.

[0005]

According to the present invention, a resin extruded from an extruder is introduced into a net forming die to form a net-shaped cylindrical body, which is cooled and cut to form a plate-shaped net. In a synthetic resin net manufacturing apparatus, a branch pipe is provided in the resin passage extending from the downstream side of the extruder to the upstream side of the die, and a flow rate adjusting valve is provided in the branch pipe to connect with the strip-shaped extrusion die.
The extrusion die is provided near the net-shaped plate that is extruded to the upstream side of the cooling water tank, and the net-shaped cylindrical body, which is welded to the downstream side of the cooling water tank, is cut at the band-shaped body. A cutting device is provided.

[0006]

In the synthetic resin net manufacturing apparatus configured as described above, the belt-like body is welded to the net portion downstream of the die,
Since the portion where the strip is welded is cut, the cut surface is flat and the manufacturing process is simple.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a net forming die, that is, a die set 3 is connected to an extruder 1 via an adapter 2, and the die set 3 is provided at a tip portion thereof by a drive shaft 3a driven by a drive source (not shown). Die 3b
Are rotating in opposite directions.

Referring also to FIG. 2, a film die 6 is provided downstream of the die 3b, and the film die 6 has a resin conduit 4 whose other end is connected to an adapter 2 via a flow rate adjusting valve 5. Is installed.

The resin net 8 delivered from the die 3b is cooled and solidified in the cooling water tank 7, is taken out from the cooling tank 7 by the first take-up device 9 composed of rollers, and is cut by the cutting knife 10 to form a plate shape. And is sent out as a product through the second take-up device 12.

In this case, a selvege 13 which is a belt-shaped resin film (a cross section is shown in FIG. 3) is welded from the film die 6 which is a belt-shaped extrusion die to the outside of the resin net which has become the net-shaped cylindrical body 8. The cutting knife 10 is configured to cut the selvage portion.

Therefore, both sides of the resin net 8 which has been cut into the plate shape by cutting the selvege 13 are flat.

Further, as shown in FIG. 4, it is preferable that the selvage 13 has a groove 13a at the center thereof to be cut.

FIG. 5 shows another sectional view of the cell vage, both sides of which are formed in an arc shape.

FIG. 4 shows that the cutting is easy and the cutting surface is flat, and FIG. 5 shows that the contact surface between the cell vage portion and the net portion has no sharp edge, so that the appearance is improved and it is safe.

6 to 9 exemplify the position and shape of the cell vage portion, FIG. 6 is light in weight and simple in structure, and FIG. 7 is heavy in weight but strong in both sides.

8 and 9 show a structure in which a plurality of film dies 6 are provided and a reinforcing portion 14 is added to the central portion of the net, so that the net is strong, and FIG. 9 is heavier than FIG. The part is the strongest of these four types.

In the illustrated example, so-called diamond mesh nets are made by using rotating dies that rotate relative to each other, so that other known net-forming dies form vertical and horizontal grid nets (FIG. 10), or It can be applied to a net (FIG. 11) composed of strands extending in the longitudinal direction of the net and strands extending in the diagonal direction. .

The other end of the resin conduit 4 may be connected to the die set 3 instead of the adapter 2.

[0020]

Since the present invention is constructed as described above, both sides of the synthetic resin net are flat, so that the work of the operator is easy and safe, and contributes to the improvement of efficiency. To do.

Further, the position and shape of the strip can be optimally selected depending on the purpose of use of the resin net.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a resin net manufacturing apparatus showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of the manufacturing apparatus in FIG.

FIG. 3 is a view showing a cross section of selvege.

FIG. 4 is a view showing an example of a preferable cross section of selvage.

FIG. 5 is a view showing an example of another cross section of a cell vage.

FIG. 6 is a diagram showing an example of the position and width of a cell page in a plate state.

FIG. 7 is a diagram showing another example of the position and width of the cell veil in the plate state.

FIG. 8 is a diagram showing another example of the position and width of the cell veil in the plate state.

FIG. 9 is a diagram showing another example of the position and width of the cell veil in the plate state.

FIG. 10 is a view similar to FIG. 6 showing another example of the net.

FIG. 11 is a view similar to FIG. 6 showing another example of the net.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Extruder 2 ... Adapter 3 ... Die set 4 ... Resin conduit 5 ... Flow control valve 6 ... Film die 7 ... Cooling water tank 8 ... Resin net 9 ... First take-up device 10 ... Cutting knife 12 ... Second take-up device

Claims (1)

[Claims] 1. A synthetic resin net manufacturing apparatus for guiding a resin extruded from an extruder to a net forming die to form a net-shaped tubular body, and cooling and cutting the tubular body to form a plate-shaped net. A branch pipe is provided in the resin passage extending from the downstream side of the die to the upstream side of the die, and a flow rate adjusting valve is provided in the branch pipe to connect with the strip-shaped extrusion die, and the extrusion die is a net-shaped extruded to the upstream side of the cooling water tank. An apparatus for manufacturing a synthetic resin net, characterized in that a cutting device is provided near the plate body, and a cutting device is provided downstream of the cooling water tank for cutting the net-shaped tubular body having the band-shaped body welded thereto at the band-shaped body. .