JPH07164376A - Cutting device of molding member - Google Patents

Abstract

PURPOSE:To provide a device to obtain a molding member in which the form of a garter is varied partially, simply and in a good looking. CONSTITUTION:A machine board 10; a loader 20 provided on the table surface of the machine board 10, in which a fixing groove 21 for fixing a specific length of molding member is formed; and guide rails 30 and 30 provided parallel to the loader 20 in order to designate the cutting form of the molding member; are provided. Furthermore, a running presser 35 having a presser roll 36 to press the molding member loaded on the loader 20 and to fit it to the fixing groove 21, and running along the loader 20; and a running cutter 40 having a cutting edge to cut the molding member fitted to the fixing groove of the loader, and running along the guide rails; are also provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding material cutting device.

[0002]

2. Description of the Related Art Conventionally, in a front window of an automobile or the like, a molding material made of an extruded product of a synthetic resin has been used for attaching a window glass to a vehicle body and concealing a gap between the two. By the way, in such a molding material for an automobile, a portion attached to both sides of the front window has a garter portion in order to prevent water droplets from being wiped by a wiper during rainy weather from scattering on the window glasses on both sides of the vehicle body. In the upper part of the glass, the one without a garter is used so that water droplets on the glass surface can be easily discharged to the outside.

Various processing methods have heretofore been proposed as a processing method for obtaining a molding material whose shape is partially changed depending on the presence or absence of the garter portion. For example, there is a method in which extrusion-molded products continuously manufactured to have the same cross-sectional shape are partially cut in a subsequent step to be processed into a predetermined shape. The method is shown in FIG. In this method, as shown in the figure, an extruded product 60 having the same cross-sectional shape continuously.
First, it is set on the fixing jig 61. Above the fixing jig 61, the garter portion 63 of the extrusion molded product 60 is provided.
A cutter blade 62 that moves up and down is arranged. Then, by lowering the cutter blade 62 at a predetermined position of the extruded product 60 and pressing the garter portion 63,
The garter portion 63 is partially cut off. Reference numeral 64 is a cylinder device for vertically moving the cutter blade 62.

However, this method has a problem that vertical streaks are generated on the cutting surface 65 of the garter portion 63 due to the vertical movement of the cutter blade 62. Further, since the root of the garter part 63 to be cut is held apart from the end of the fixing jig 61, the molding material is elastically deformed during pressing by the cutter blade 62, and the cutting surface is displaced. As a result, as shown in FIG. 9, the obtained cut surface 65 becomes swollen, and if it is left as it is, the appearance defect and the dimensional accuracy defect are generated. Therefore, the cut surface 65 is smoothed by a high frequency process after that. It was hard to say that the process was complicated and efficient.

In order to solve this problem, it is preferable to provide a fixing jig 61 directly under the cutter blade 62 to securely hold and fix the garter portion 63 to be cut off. The blade edge of 62 hits the fixing jig 61, and the cutter blade 62 is quickly damaged. Further, in this method, since the garter portion 63 is sandwiched between the cutting edge of the cutter blade 62 and the fixing jig 61, the shearing is performed between the cutter blade 62 and the fixing jig 61 as compared with the method shown in FIG. The force is less likely to be generated and the garter portion 63 may not be completely cut.

[0006]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above problems, and provides a molding material in which the shape of the garter part is partially changed with a good appearance and easily. It is intended to provide a device.

[0007]

[Means for Solving the Problems] That is, in the molding material cutting device of the present invention, a machine base and a fixing groove for fixing the molding material of a predetermined length are formed on the table surface of the machine base. Mounting part, a guide rail provided in parallel with the mounting part for defining the cutout shape of the molding material, and pressing the molding material mounted on the mounting part into the fixing groove. A traveling pressing portion that is equipped with a pressing roll to be fitted and that travels along the mounting portion,
It is characterized by comprising a traveling cutter equipped with a blade part for cutting off the molding material fitted in the fixing groove of the mounting part and traveling along the guide rail.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a perspective view showing an example of a molding material cut by a molding material cutting device of the present invention, and FIG. 2 is a front view showing an example of the molding device of the present invention.
Is a view as seen from the arrow 3.

4 to 7 show the operation of the apparatus of the present invention. FIG. 4 is a front view showing a state where the traveling cutter is located at the highest part of the guide rail, and FIG. 5 is fixed in FIG. FIG. 6 is a front view showing a state where the molding material is set in the groove, FIG. 6 is a front view showing a state where the traveling cutter is located at the lowest part of the guide rail, and FIG.

As shown in FIG. 1, in the molding material 50 cut by the molding material cutting device of the present invention, a part of the garter portion 53 integrally formed on the upper surface of the molding body 51 is outwardly exposed. Gradual cuts 52, 52 are formed at both ends so as to be expanded and cut and removed. In the molding material 50, the cutting surface 54 of the garter portion 53 is extremely beautiful without vertical stripes or uncut portions due to vertical movement of the cutter blade.

As shown in FIGS. 2 and 3, the molding material cutting device according to the present invention includes a machine base 10 and a mounting portion 2.
0, the guide rail 30, the traveling pressing portion 35, and the traveling cutter 40, and the molding material 50 fitted into the fixed groove 21 of the mounting portion 20 is cut and removed into a predetermined shape by the traveling cutter 40.

The machine base 10 has a table surface 11 formed to have a length on which the molding material 50 can be placed.
The table surface 11 is provided with a mounting portion 20 for holding a molding material 50 having a predetermined length to be processed. Reference numeral 18 is a terminal positioning stopper for the molding material, which is provided at the rear end of the guide rail 30 on the table surface 11.

The mounting portion 20 is for securely holding the molding material 50 of a predetermined length and performing a highly accurate cutting process, and the fixing groove 21 into which the main body 51 and the leg portion 55 of the molding material 50 are fitted. Is provided. As can be seen from the figure, the fixing groove 21 is provided obliquely with respect to the mounting portion 20, and the cut surface 54 of the garter portion 53 is provided.
The molding material 50 is held obliquely so as to be horizontal with respect to the blade portion 42 of the traveling cutter 40 described later. The fitting of the molding material 50 into the fixing groove 21 is performed by the traveling pressing portion 35 described later.

On the table surface 11, the mounting portion 2 is placed.
Guide rails 30 and 30 are provided in parallel with 0. As shown in FIGS. 2 and 3, the guide rails 30, 30 have a length corresponding to the length of the molding material to be processed, and are provided in parallel with each other with the fixing groove 21 of the mounting portion 20 interposed therebetween. .

The guide rails 30 and 30 are for defining the cutout shape of the garter portion 53 of the molding material 50, and each has the highest highest portion 31, the inclined portion 32 formed of an inclined surface, and the lowest lowest portion. And 33 are provided. The highest portion 31, the inclined portion 32, and the lowest portion 33 are the blade portion 4 of the traveling cutter 40 traveling on the guide rail 30.
It is for changing the height position of 2 and cutting off the garter part 53 of the molding material 50 according to the height.

That is, the highest portion 31 of the guide rail is
The blade portion 42 of the traveling cutter 40 is held at a height position where it does not come into contact with the garter portion 53 of the molding material placed on the placing portion 20. The inclined portion 32 is formed by connecting the highest portion 31 and the lowest portion 33 with an inclined surface, and corresponds to the gradually changing cut portion 52 of the molding material. Further, the lowest part 33 is for completely cutting and removing the garter part 53 from the molding material 50, and the blade part 42 of the traveling cutter 40 is provided on the mounting part 20 of the garter part 53 of the molding material. It is configured at a height position where it runs along the root. In this embodiment, the lowest portion 33 is provided between the two inclined portions 32, 32, and the garter portion 5 near the center 57 as shown in FIG.
3 is preferably used for the molding material 50 that has been cut and removed by forming the gradually changing excision portions 52, 52.

Before the traveling cutter 40 cuts the garter portion 53 of the molding material 50 by the traveling cutter 40, the traveling pressing portion 35 automatically and reliably fits the molding material 50 into the fixing groove 21 of the mounting portion 20. A pressing roll 36 is provided for efficiently cutting the molding material.

The traveling holding portion 35 is attached to a rail member 34 provided above the guide rail 30 and is moved forward on the placing portion 20 in the length direction of the molding material 50 by a driving portion 44. fall back. In addition,
The travel pressing portion 35 is provided obliquely corresponding to the fixed groove 21 in order to reliably fit the molding material into the fixed groove 21. Reference numeral 49 is the traveling pressing portion 3
5 is a cylinder device for moving the device 5 closer to and away from the placing part 20.

The pressing roll 36 runs along the mounting portion 20 and presses the molding material 50 mounted on the mounting portion 20 to fit the main body 51 and the leg portions 55 into the fixing groove 21. A pressing surface 37 and a gutter portion relief groove 38 are provided on the cylindrical surface. The pressing surface 37 presses the molding material 50 from the upper surface to fit the main body 51 and the leg portion 55 into the fixing groove 21, and the upper fin piece 56 is sandwiched between the pressing surface 37 and the mounting portion 20 to form a cut surface. The vicinity of the root of the garter portion 53 of the molding material is flattened. Further, the gutter portion escape groove 38 is
When the molding material 50 is fitted in the fixed groove 21, the garter portion 53 is not pressed by the pressing roll 36 and is projected above the mounting portion 20. As a result, cutting and removal of the garter portion 53 by the traveling cutter 40 described later can be performed accurately.

The traveling cutter 40 has the guide rail 30.
A predetermined position of the garter portion 53 of the molding material 50 is cut while traveling along the guide rail 3.
It is provided with roller members 41, 41 rolling on 0 and a blade part 42 for cutting off the garter part 53 of the molding material 50 mounted on the mounting part 20. The blade part 42 is horizontally suspended above the placing part 20, moves vertically along the shape of the guide rail 30 when the traveling cutter 40 travels, and the garter part 53 on the upper surface of the molding material 50.
Is cut and removed at a predetermined position.

The traveling cutter 40 is driven by a drive unit common to the drive unit 44 for causing the traveling holding unit 35 to travel, and the guide rail 3 is provided immediately after the traveling holding unit 35.
Run back and forth along 0. The traveling cutter 40 is vertically movable by a cylinder device 46 attached to the drive unit 44.

Next, a method of cutting and removing the garter portion 53 of the molding material 50 by the device 10 will be described. First, as shown in FIG. 4, the traveling cutter 4
0 and the traveling holding portion 35 are arranged at one end of the guide rail 30, and the cylinder devices 46 and 49 are operated to lift the blade portion 42 and the pressing roll 36 above the mounting portion 20. Then, the molding material 50 is arranged on the mounting portion 20, and the end thereof is inserted into the fixing groove 21 of the mounting portion 20. Reference numeral 22 is a terminal pressing cylinder made of molding material.

Subsequently, as shown in FIG. 5, the pressing roll 36 of the traveling pressing portion 35 is lowered by the cylinder device 49, and the molding material 5 on the mounting portion 20 is moved.
Press 0 to fit into the fixed groove 21. Then, the traveling cutter 40 is arranged at the operation start position on the guide rail 30, and is pressed onto the rail by the cylinder device 46.

Then, the drive portion 44 is operated to cause the traveling pressing portion 35 and the traveling cutter 40 to travel along the mounting portion 20. The traveling pressing portion 35 travels immediately in front of the traveling cutter 40, and the molding material 50 on the mounting portion 20 is continuously fitted into the fixed groove 21 in advance. At this time, the slack and kinks of the molding material are sequentially fed forward by the pressing roll 36 to keep the cut surface of the garter portion 53 flat. On the other hand, the traveling cutter 40 has the fixed groove 2
It travels along the guide rail 30 on the molding material 50 fitted in the inside 1. While the traveling cutter 40 is traveling on the highest portion 31 of the guide rail 30, as shown in FIG. 3, the blade portion 42 is located above the molding material 50 and the garter portion 53 remains uncut.

The traveling cutter 40 is attached to the guide rail 3
When reaching the inclined portion 32 of 0, the traveling cutter 40 descends along the shape of the inclined portion 32 by the cylinder device 46, and the molding material 50 fitted in the fixed groove 21.
The garter part 53 is gradually cut from above.

Subsequently, as shown in FIG. 6, the guide rail 30
The cylinder device 46 bends and extends along the shape of the above, and the traveling cutter 40 reaches the lowest portion 33 of the guide rail 30.
As a result, the blade portion 42 of the traveling cutter is, as shown in FIG. 7, the upper surface portion of the fin piece 56 of the molding material 50 mounted on the mounting portion 20, that is, the garter portion 53.
Will be located at the base of. Then, the traveling cutter 40
By running on the lowest portion 33 of the guide rail, the garter portion 53 of the molding material is completely and beautifully cut off from the root.

In this way, by further running the traveling cutter 40 along the guide rail 30 to the other end of the molding material, the garter portion 53 of the molding material 50 is cut into a predetermined shape. After the processing is completed, the cylinder devices 46 and 49 are operated to move the traveling presser 3
5 and the traveling cutter 40 are lifted upward to take out the product from the fixing groove 21. The cut shape of the molding material can be variously changed depending on the shape of the guide rail 30. The cutting device for molding material according to the present invention is not limited to cutting the garter portion of the molding material, but can be used for cutting other portions of the molding material.

[0028]

As shown and described above, according to the molding material cutting device of the present invention, the molding material is desired by running the traveling cutter along the guide rails that define the cutting shape of the molding material. Can be cut into shape. At that time, the traveling presser that travels in front of the traveling cutter causes the molding material to
It is continuously and automatically fitted in the fixing groove. Therefore, the cutting and removing of the molding material can be easily and surely performed. Further, since the device of the present invention does not cut by vertical movement of the blade unlike the conventional press cut, vertical stripes do not occur on the cut surface, and the cut surface of the molding material is extremely smooth and beautiful. Therefore, it is possible to obtain a highly accurate product.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a molding material cut and processed by a molding material cutting device of the present invention.

FIG. 2 is a front view showing an example of the device of the present invention.

FIG. 3 is a view on arrow 3.

FIG. 4 is a front view showing a state in which a traveling cutter is located at the highest portion of a guide rail.

5 is a front view showing a state in which a molding material is set in a fixed groove in FIG.

FIG. 6 is a front view showing a state in which the traveling cutter is located at the lowest portion of the guide rail.

FIG. 7 is a view taken in the direction of arrow 7.

FIG. 8 is a cross-sectional view of essential parts showing an example of a method of processing a molding material whose shape is partially changed.

FIG. 9 is a cross-sectional view showing an example of the obtained molding material.

[Explanation of symbols]

 10 machine base 11 table surface 20 mounting portion 21 fixed groove 30 guide rail 31 highest portion of guide rail 32 inclined portion of guide rail 33 lowest portion of guide rail 35 travel holding portion 36 holding roll 40 traveling cutter 42 blade portion 50 molding material

Claims (1)

[Claims] 1. A machine base, a mounting portion provided on a table surface of the machine base to form a fixing groove for fixing a molding material of a predetermined length, and for defining a cut shape of the molding material. A guide rail provided in parallel with the above-mentioned placing portion, and a pressing roll that presses the molding material placed on the above-mentioned placing portion to fit into the fixing groove, and travels along the above-mentioned placing portion. A device for cutting a molding material, comprising: a pressing portion; and a traveling cutter that travels along the guide rail, the cutter having a blade portion that cuts the molding material fitted in the fixing groove of the mounting portion.