JPH09323301A - Method for cutting postform material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve cutting efficiency by separately applying two circular saws to different surface layers under conditions of down cut. SOLUTION: A saw base 5 is moved to a start end of stroke, on the right side, and protruding positions of circular saws Sa, Sb are set by means of pneumatic cylinders 10a, 10b, respectively. By actuating the cylinders 10a, 10b, one of the saws Sa is set at a mark-cutting position and the other saw Sb is at a cutting-off work position, following which the base 5 is moved to the left side, whereby the preceding saw Sa cuts a surface layer on the underside of a workpiece W by down cut. And the succeeding saw Sb moving with the saw Sa cuts a curved surface layer on the side of the start end and a surface layer on the upper side of the workpiece by down cut. The saw Sb even completely cuts a core material P. Since cutting is effected in one stroke using two circular saws, work efficiency can be largely improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cutting a postform material obtained by laminating a hard synthetic resin on the surface layer.

[0002]

2. Description of the Related Art When a post-form material is cut with a circular saw, a hard surface layer is liable to be chipped. Therefore, the circular saw always acts as a down-cut on the processed material. Need to be considered. (JP-A-6
(See 1-86201)

The curved portions at both ends of this postform material are the most difficult to cut, and the cutting device disclosed in JP-A-62-37101 has been proposed as a technique for overcoming this problem. In this processing device, cutting operation without chipping is realized by appropriately adjusting the traveling position of one circular saw.

[0004]

SUMMARY OF THE INVENTION The above-described conventional machining apparatus requires a stroke of both reciprocating processes in the longitudinal direction in order to always down-cut one circular saw to a workpiece. . Therefore, there is a problem that the work efficiency is significantly reduced.

Further, the traveling position of the circular saw must be adjusted each time in accordance with the shape of the processed material, particularly the curvature of the end surface.
Therefore, it has been pointed out that the operation is very troublesome.

The present invention has been made in view of these problems of the prior art, and an object of the present invention is to provide a method for cutting a post-form material capable of improving the efficiency of cutting work. Another object of the present invention is to provide a cutting method in which the position of the circular saw can be easily adjusted during the cutting process.

[0007]

In order to achieve the above object, the method for cutting a post-form material according to the present invention is as follows.

That is, the gist of the invention is that it is provided with two circular saws, of which the preceding traveling circular saw cuts the surface layer portion on the lower surface side of the work material and the curved surface layer portion on the traveling end side. This is done by cutting the surface layer portion and the core material in which the circular saws traveling in the trailing direction are left, and further, the two circular saws act on the above-mentioned separate surface layer portions in the down-cut state.

The invention according to claim 2 is characterized in that, in the machining method according to claim 1, the circular saw that travels in advance moves following the shape of the curved surface layer portion on the trailing end side of the workpiece. .

[0010]

Since the circular saws can be arbitrarily rotated, for example, in opposite directions to each other, the down-cut state can be easily obtained for the surface layer portions on the lower surface side and the upper surface side. In addition, since the cutting work is shared by the two circular saws, the cutting work can be performed in a single stroke.

The traveling position of the circular saw can be restricted by the copying operation. Therefore, it is possible to always ensure an appropriate circular saw position without causing the circular saw to project more than necessary.

[0012]

EXAMPLE An example in which the method for cutting a post-form material according to the present invention is applied to a cutting apparatus will be specifically described below.

In FIG. 1, 1 is a horizontal table 2 is an abutting ruler plate provided at the upper end of the table 1 (left side in the figure)
3 is a clamp bar 4 for pressing and fixing the work material W on the table 1. A horizontal rail 5 is arranged in parallel with the table 1 at the lower part. 5 is a saw stand provided movably on the horizontal rail 4. The traveling drive means reciprocally travels.

Mounting stays 6a and 6b are provided on one side and the other side of the saw stand 5, and pivoting arms 7a and 7b are arranged on the mounting stays 6a and 6b, respectively. Rotating arm 7
Bearing barrels 8a and 8b are attached to the free ends of a and 7b, and circular saws Sa and Sb are rotatably supported on the bearing barrels 8a and 8b.

These circular saws Sa and Sb are individually driven to rotate by an electric motor (not shown). One circular saw Sa is clockwise as shown in the figure, and the other circular saw Sb is counterclockwise. Rotate.

Reference numeral 10a is a pneumatic cylinder for actuating the rotating arm 7a. When the piston rod is at the contracted end, a circular saw S is used.
a is set to the retracted position in the table 1, and when it is in the contracting position, the circular saw Sa is set to the bristle cutting position where it slightly projects. Further, when the piston rod is in the extended state, the circular saw Sa is set to a cutting position where it largely projects from the table 1.

The bristle cutting position is secured by inserting a spacer (not shown) at the contracted end of the piston rod.

Reference numeral 10b is a pneumatic cylinder for actuating the rotating arm 7b. When the piston rod is at the contracted end, a circular saw S is used.
b is set to the immersion position, and the circular saw Sb is set to the cutting position when it is in the extended position. The protruding amount of the circular saw Sb at this cutting position is ensured by contacting a position regulating piece (not shown) with the rotating arm 7b.

Next, 11 is a bearing cylinder 8 which is concentric with the circular saw Sa.
The copying roller rotatably provided on a.
Corresponds to the lower surface portion of the processed material W in the void 12 provided by cutting out the table 1. LSa is dock 1 of saw stand 5
It is a limit switch arranged corresponding to 3a.

The limit switch LSa outputs when detecting the dock 13a, and the pneumatic cylinder 10a extends the piston rod to project the circular saw Sa. Reference numeral 14 is a traveling slit for the circular saws Sa and Sb formed on the table 1.

The configuration of the cutting device according to the embodiment is as described above, and the post-form material is cut as follows.

First, the processed material W is placed on the table 1 and one end thereof is contacted with the contact ruler plate 2 to be set. The processed material W is pressed and fixed by the clamp bar 3. The saw stand 5 is moved to the right, which is the start of the stroke, and then each pneumatic cylinder 10a,
The protruding positions of the circular saws Sa and Sb are set by 10b.
(See Fig. 2)

By the operation of the pneumatic cylinders 10a and 10b, one circular saw Sa is set to the bristle cutting position and the other circular saw Sb is set to the cutting position. Circular saws 10a, 10
When the position of b is set, the saw stand 5 is moved to the left in the drawing. By this movement, the circular saw S traveling ahead
a cuts the surface layer portion Wa on the lower surface side of the processed material W by down-cutting. (See Fig. 1)

Further, the trailing circular saw Sb traveling along with the circular saw Sa cuts the curved surface layer portion Wb on the starting end side and the surface layer portion Wc on the upper surface side by down-cutting. The circular saw Sb completely cuts the core material P as well. These circular saws Sa,
For cutting with Sb, the saw table 5 is the limit switch LS.
It continues until it reaches the operating position of a.

When the limit switch LSa is operated, the pneumatic cylinder 10a extends the piston rod by the output signal thereof, so that the circular saw Sa further projects from the bristle cutting position onto the table 1. The projecting operation of the circular saw Sa is gradually performed without any impact. Therefore,
Since the circular saw Sa moves and moves during that time, the cutting process is performed as shown in FIG.

The above-mentioned projecting operation of the circular saw Sa is completed when the copying roller 11 comes into contact with the lower surface layer portion Wa of the workpiece W, and the cutting state in downcut does not change. After that, the copying roller 11 regulates the protruding position of the circular saw Sa while contacting the curved surface layer portion Wd on the end side of the work material W, so that the work material W is cut and processed as shown in FIG.

After the circular saw Sa is cut by the above-mentioned copying operation with all the curved surface layer portion Wd on the end side or the curved portion of the upper half portion left slightly, the circular saw Sa further projects. Immediately immersive operation is not required. The timing of this immersion is set by a limit switch (not shown). In the above-mentioned processing range, the circular saw Sa of the preceding traveling acts with a down cut.

In the state where the preceding traveling circular saw Sa has finished the cutting process, the following traveling circular saw Sb is in the middle of the cutting process. The circular saw Sb is used for processing with a projection amount that does not change from beginning to end, and cuts the remaining surface layer portion Wc on the upper surface side and the core material P. And this circular saw Sb
When passes through the end portion of the processed material W, all processing is completed.

In the above embodiment, the copying roller 1
The protrusion amount regulation range of the circular saw Sa by 1 is only a part. However, if a long guide rail 20 is provided on the inner surface of the table 1 as shown in FIG. 4 and the copying roller 11 is pressed against the guide rail 20, the position regulation range of the circular saw Sa can be widened.

[0030]

As described above, the method for cutting a post-form material according to the present invention is one in which two circular saws are operated to perform the cutting process in one stroke. Therefore, it is possible to significantly improve the work efficiency.

Further, the protrusion amount of the circular saw is regulated by the copying roller. Therefore, an excellent effect that the cutting operation can always be performed at a favorable saw position without requiring an adjusting operation is exerted.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a cutting processing apparatus that carries out a cutting method according to the present invention.

FIG. 2 is likewise an explanatory view of the cutting operation.

FIG. 3 is likewise an operation explanatory view of cutting processing.

FIG. 4 is an explanatory diagram showing another embodiment.

[Explanation of symbols]

 1 Table 5 Saw stand Sa Circular saw traveling forward Sb Circular saw traveling backward 10a Pneumatic cylinder 10b Pneumatic cylinder 11 Copying roller W Processed material Wa Surface layer on lower surface Wb Curved surface layer on starting side Wc Upper surface side Surface layer Wd curved surface layer on the terminal side P core material

Claims (2)

[Claims] 1. A processing apparatus for cutting a workpiece fixedly mounted on a table by a circular saw that is traveling and moving, comprising two circular saws, of which the preceding circular saw is the lower surface side of the workpiece. The surface layer part and the curved surface layer part on the trailing end side are cut, and the surface layer part and the core material for the trailing traveling circular saw are cut, and two circular saws are used for the separate surface layer parts described above. The method for cutting a postform material is characterized in that each of them acts in a downcut state. 2. The method of cutting a post-form material according to claim 1, wherein the circular saw that travels ahead moves following the shape of the curved surface layer portion on the trailing end side of the processed material.