JPH07124890A - Cutting device for synthetic resin foamed body - Google Patents

Abstract

PURPOSE:To stably, safely and finely cut off a foamed body whose cross section is large, and thereby enhance productivity and durability. CONSTITUTION:The device is made up of a portal device frame 1, a cutting blade receiving board 3 provided for the lower section of the frame 1, a cutting blade main body 7, going-up and down screw shafts 6 which are threadedly engaged with both the ends of the cutting blade main body 7 in the longer direction, and are rotatably erected at the frame 1, and of a rotation drive means 11 for the screw shafts 6, and a cutting edge section 7A formed at the lower end of the cutting blade main body 7 is composed of two edges each of which is formed into a triangular screw thread in a crest or a wave form.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cutting a foam such as synthetic resin such as phenol resin.

[0002]

2. Description of the Related Art Generally, a resole-type phenol resin foam excellent in water absorption and water retention is widely used as a sword mountain for fresh flowers, that is, as a flower retaining material. Then, it is cut into a size of a brick by a cutting device.

[0003]

However, the conventional batch method has a problem that it is very inefficient and the productivity is low. Therefore, we have developed a facility that manufactures foam blocks with a large cross section using a continuous manufacturing device suitable for mass production and cuts them into arbitrary lengths. However, with a normal push-cut type cutting device, both single-edged and double-edged cutting cannot be performed satisfactorily, and
In the belt saw, the belt saw itself broke, and there was a risk of ignition in a flammable gas atmosphere, and there was a problem in durability. The present invention has been made in view of the above circumstances, and an object of the present invention is to cut a foam having a large cross section stably, safely and neatly with high productivity and high durability. In order to provide a cutting device.

[0004]

In order to achieve the above object, the present invention takes the following technical means. That is, according to the present invention, a gate type device frame, a cutting blade receiving base provided at a lower portion of the frame, a cutting blade main body, and a longitudinally threaded end of the cutting blade main body and rotatably erected on the frame. It is characterized in that it comprises an elevating screw shaft provided and rotation driving means for the screw shaft, and that the cutting edge portion formed at the lower end of the cutting blade body is double-edged and has a triangular thread shape or a wavy shape. .

[0005]

According to the present invention, first, when the foam block is positioned on the cutting blade pedestal while the cutting blade body is in the standby state at the upper part, the screw shaft is rotated by the screw shaft driving means. When the main body is lowered, the double-edged and triangular screw thread or corrugated cutting blade portion pierces and positions the foam block from the tip thereof, and then the foam block is torn to surely and smoothly cut. In this way, when the cutting of the foam block is completed, the cutting blade body rises and stands by until the cutting position of the next foam block comes to the upper part.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, reference numeral 1 is a gate-type device frame which is erected on a base 2 and is provided inside the frame 1 and on which a pair of front and rear cutting blade receiving bases 3 are provided at predetermined intervals. Bearings 4 having an axial center in the vertical direction are attached to the lower inner facing surface of the frame 1 at the center in the front-rear direction and at a position below the upper surface of the cutting blade receiving base 3 so as not to interfere with it. ing.

Further, an upper bearing 5 is mounted on the upper portion of the frame 1 on the same axis as the bearing 4, and the cutting blade main body lifting screw shaft 6 is rotatable by both bearings 4 and 5. It is pivotally supported. Reference numeral 7 denotes a cutting blade main body, and female screw members 8 are detachably attached to both ends in the longitudinal direction of the main body 7, and a cutting edge portion 7A formed on a lower end edge of the main body 7 has a double blade as shown in FIG. Moreover, it is a triangular screw thread (see FIG. 2).

The upper ends of the screw shafts 6 and 6 are projected from the frame 1 and chain wheels 9 and 9 are fixed thereto, and an endless interlocking chain 10 is wound between the chain wheels 9 and 9. An output shaft 12 of a drive means 11 such as a motor with a speed reducer provided on the frame 1 is connected to an upper end of the one screw shaft 6 via a coupling 13. In addition, in FIG. 2, 15 and 16 are foam block conveyors.

In the above embodiment, the foam block 14
When cutting the cutting blade body 7, first, the cutting blade body 7 is raised to the standby position, and when the cutting position of the foam block 14 comes directly under the cutting blade body 7 and stops, the screw shaft driving means 11 starts and cuts. The blade body 7 descends, the tip of the cutting blade portion 7A pierces the foam block 14, and the cutting blade body 7 descends further to tear the foam block 14.

At this time, the cut surface of the foam block 14 is
Since the cutting blade portion 7A of the cutting blade body 7 is double-edged and has a triangular thread ridge, it is straight and beautiful. In this way, when the cutting is completed, the cutting blade body 7 is lifted by the driving means 11 and waits for the cutting position of the next foam block 14 to reach at the upper part.

According to the above embodiment, when exchanging the cutting blade main body 7 or polishing the cutting blade portion 7A, the main body 7 can be easily removed from the female screw member 8.
The present invention is not limited to the above-mentioned embodiment, can be appropriately modified in design, and can be used for cutting synthetic resin foams other than the phenol resin.

[0012]

As described above, according to the present invention, the gate-shaped device frame, the cutting blade pedestal provided on the lower portion of the frame,
A cutting blade main body, a lifting screw shaft screwed at both ends in the longitudinal direction of the cutting blade main body and erected rotatably on the frame,
A large cross-sectional area because the cutting blade portion formed by the rotation driving means of the screw shaft and formed at the lower end of the cutting blade body is double-edged and has a triangular thread shape or a corrugated shape. The foam of can be cut smoothly, reliably and efficiently and neatly and stably. Furthermore, the cutting blade body is very robust and does not break, and therefore flammable gas is generated during cutting. However, since there is no fear of ignition, safety is extremely high, and durability is great, productivity can be improved and cost can be reduced.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

3 is an enlarged cross-sectional view taken along the line BB of FIG.

[Explanation of symbols]

 1 Device Frame 2 Base 3 Cutting Blade Support 6 Cutting Blade Main Body Lifting Screw Shaft 7 Cutting Blade Main Body 7A Cutting Blade Part 11 Screw Shaft Drive Means

Claims (1)

[Claims] 1. A gate-shaped device frame, a cutting blade receiving base provided at a lower portion of the frame, a cutting blade main body, and screwing at both ends in the longitudinal direction of the cutting blade main body and rotatably erected on the frame. And a screw driving means for rotating the screw shaft, and the cutting edge portion formed at the lower end of the cutting blade body is double-edged and has a triangular thread shape or a wavy shape. Cutting device for resin foam.