JPS6384893A - Cutter for roller screen cord contained rubber sheet material - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Regarding the cutting of rubber sheet material with blind cords, a cutting device that starts cutting the rubber sheet material with blind cords from the end is the entire length of the cutting range of the rubber sheet material with blind cords. The cutter, which has an obtuse-angled blade at the bottom facing the electrically heated cutting direction, runs along the guide groove while holding down the rubber sheet material with the blind cord, and cuts it by sliding it. It is a device.

However, in such a device, the holding plate holds down the rubber sheet material containing the blind cord over the entire length of the cutting range, so the rubber sheet material containing the blind cord covers both the cutting area and the holding plate. Also, if the blind cord is placed directly above or across the guide groove, the blind cord will be held down by the holding plate and there will be no escape, so the cutter will not be able to remove the blind cord. Cut or cut at the beginning of the cut. Furthermore, since the cutter travels through the guide groove while holding down the rubber sheet material containing the blind cord, the guide groove becomes clogged with rubber debris, which may cause the cutter to come off the guide groove or deteriorate the movement and sharpness of the cutter.

. - To solve this problem, the guide groove of the cutter is provided over the entire length of the cutting range, and the rubber sheet material with blind cord is held down only at the end on the cutting start side. A means for raising and lowering a presser plate that presses the groove at regular intervals, and a heated cutter whose shape is an acute angle toward the cutting direction and whose blade has an acute-angled upper slope, are moved along the guide groove. The entire cutting device includes a traveling means that allows the tip to travel while entering the guide groove, and a center of rotation that is centered at the center of the guide groove on the cutting start side in order to align the cutting direction of the cutter with the extending direction of the webbing cord. This can be solved by providing a rotating means.

As shown in Figure 3, with the cutting direction of the cutter aligned with the direction in which the webbing cord extends, the cutter presses the end of the cutting start side of the rubber sheet material containing the weave cord with a presser plate, and the cutter moves in the cutting direction. The sharp tip of the rubber sheet material with the blind cord works to scoop up the end of the rubber sheet material containing the blind cord, and tension is applied to this end. Since there is no holding plate in the cutting range, the sag cord moves along the cutter while being suspended by the cutter, and the entire length is cut without cutting the sash cord or clogging the guide groove with rubber debris. Further, since the presser is only used for a part of the cutting start portion, when the presser is released after cutting, the cut rubber sheet material containing the blind cord can be taken out without adhering to the anvil or the presser plate. In addition, in Fig. 3, the whole is in the cutting start state, A is the rubber sheet material with blind cord, and A is the rubber sheet material with blind cord.
1 is the tension acting part of A, B is the cutter, Bl is the blade part, C is the anvil, D is the guide groove, E is the holding plate, and F is the cutting direction of the cutter.

Branch l Hereinafter, one embodiment of the present invention will be described based on the drawings.

1st. In Figure 2, l is ping.

The frame 1 is attached to the servicer 2 so as to be rotatable via the motor 3, and a geared motor 8 is attached to one end of the frame 1. A belt pulley 9 is fixed to the output shaft of the geared motor, and is connected via a timing belt 10 to a belt pulley 11 rotatably attached to a tension fitting 12 at the other end of the frame l. A bracket (14) is fixed to the upper part of the timing belt (10) near the belt wheel (11). An L-shaped fitting 15 is rotatably attached to the lower left side of the cutter 13, and a cutter 16 is attached to the lower tip of the L-shaped fitting 15.
It is attached with several bolts so that it can be removed. Therefore, the timing belt is connected to the geared motor 8 as a whole! A cutter 16 is attached to the cutter 16 via a bracket 14 and a carrier 13, thereby forming cutter traveling means. L-shaped fitting 15 at the attachment part of the cutter 16
A rod-shaped heater 19 is attached to serve as means for heating the cutter 16. The cylinder 17 is attached to the carrier 13 so that the rod part of the cylinder 17 is in contact with the upper side surface of the L-shaped fitting 15, and constitutes a means for flipping up the cutter.A fitting 18 is attached to the upper part of the carrier 13, and the cutter 16 moves. Sensors 21-1 and 21-2 are fixed to the upper surface of the frame l with a certain gap above the metal fitting 18 so as to be at the start position and the end position of travel. An anvil 4 with a guide groove 5 serving as a passage for a cutter 16 is attached to the lower part of the frame l via a spacer 6. The lower surface of the anvil 4 is rotatably placed on the upper surface of the servicer 2 about the pin joint 3 and is fixed with a butterfly bolt 7. A press plate 22 is fixed to the rond of a cylinder 23 fixed to the anvil 4 across the guide groove 5 on the cutting start side.

Further, a guide pin 24 is attached to the presser plate 22, and together with the cylinder 23, constitutes a lifting means for the presser plate 22 which presses the end of the rubber sheet material A containing the blind cord on the anvil 4.

Next, the operation of one embodiment of the present invention will be explained. In advance, rotate the frame 1 around the binge joint 3 and adjust it so that the extending direction of the blind cord of the rubber sheet material A containing the blind cord matches the direction of the guide groove 5, and then attach the anvil 4 to the servicer 2 with the butterfly bolt 7. Stop with. Further, the rod-shaped heater 19 is turned on and the cutter 16 is heated to a predetermined temperature to complete the preparation. Rubber sheet material A with a blind cord that is continuous in the length direction of a certain width is fed from the carry-in side 26 onto the anvil 4 by a predetermined length by a conveyor (not shown), and the cylinder 23 is operated and the presser plate 22 is lowered. Press the end of the rubber sheet material A containing the blind cord.

The geared motor 8 operates in the forward rotation direction, and the cutter 16 placed at the travel start position travels in the guide groove, and the sharp edge of the cutter 16 scoops up the end of the rubber sheet material A containing the blind cord, and the gap between the presser plates 22 Tension is applied to the rubber sheet material A containing the blind cord, and the cutter 16 passes through the other end of the rubber sheet material A containing the blind cord along the guide groove 5 while cutting into the weak rubber part between the cords. It travels to the position of sensor 21-2, and the geared motor 8 stops when detected by sensor 21-2. At the same time, the cylinder 23 is activated, the presser plate 22 is raised, the presser is released, and the cut rubber sheet material containing the blind cord is placed on the anvil 4. It is taken out and sent to the next molding process. At the same time, the cylinder 17 operates to flip the tip of the cutter 16 upward from the guide groove 5, and then the geared motor 8 operates in the reverse direction, causing the cutter 16 to travel while being flipped upward, and is detected by the sensor 21-1. Then, the next continuous rubber sheet material with blind cords is fed onto the anvil 4 by a conveyor (not shown) by a predetermined length, and the rubber sheet with blind cords is conveyed by the same means as described above. Material A is cut.

In addition, in this invention, the operation circuit is constructed so that the beginning and end of each operation, including the operation of loading and unloading the material to be cut, is detected by sensors such as proximity switches and limit switches, and a series of operations is performed. The operation may be performed automatically.

1 Bean A1 Rubber sheet material with blind cords is scooped up and floated while avoiding the blind cords and cutting into the rubber part and cutting along the blind cords.Good cutting is possible without cutting the blind cords or notches at the ends.Strength quality. will improve. In addition, since the cutter cuts while floating, the guide groove is not clogged with rubber debris, so the cutter moves better and cuts better. Furthermore, since the presser is only partially attached, the rubber sheet material containing the blind cord can be easily taken out without adhering to the presser plate or anvil.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention. FIG. 2 is a plan view, and FIG. 3 is a cutting start state diagram for explaining the operation. 4... Anvil 16... Cutter 22... Holding plate

Claims (1)

[Claims] A guide for cutting rubber sheet materials with blind cords, in which a heated cutter with a blade attached to the upper slope with an acute angle of 60 degrees or less, preferably 30 degrees, in the cutting direction is provided over the entire length of the cutting range. A traveling means that runs along the groove by putting the sharp tip of the cutter into the guide groove, and a cutting start end of the rubber sheet material with blind cords, which is separated by a distance greater than the gap between the blind cords, across the guide groove. presser foot,
or cutting of a rubber sheet material containing a blind cord, characterized in that it is equipped with means for raising and lowering a presser plate to be opened, and means for rotating the entire cutting device with the rotation center placed at the center of the guide groove on the cutting start side. Device