JPS58962B2 - Reciprocating material feeding device for woodworking machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention reverses the material feeding member after cutting the material,
This invention relates to a reciprocating material feeding device for a woodworking machine that returns materials using this material feeding member.

Conventionally, when carrying out reciprocating material feeding in a woodworking machine such as a copper plate, a detector for detecting the rear end of the material was installed in front of a control device installed on the table, and the detector was used to detect the rear end of the material using a timer. By connecting it to a rotary switch, you can set a timer for the time it takes the material to move from the detection point of the detector to just after adjusting the force, and the material can be returned at the same time as the cutting is completed, regardless of the length of the material. However, with this end detection method, if there is a notch in the middle of the material, the detector detects this notch as the rear end of the material and activates the timer, so the material is returned midway through cutting. In addition, when changing the material feeding speed depending on the material type and finishing conditions, if you do not change the timer setting each time, the material may be returned before cutting is finished, or the material may be sent backwards without being returned. It had the disadvantage of being sent away.

However, the reciprocating material feeding device for a woodworking machine according to the present invention is configured so that the force regulating holder installed on the table moves slightly in the material feeding direction during cutting, and returns to its original state after cutting. On the side where the material is slightly moved, a cutting completion detector that is turned on and off by the slight movement and restoring of the holding body is installed oppositely, and this detector is connected to the rotation switch of the material feeding member. When the material is sent to the workpiece and cut by adjusting force, the detector detects the end of cutting by the return of the adjusting force holder that moved slightly during cutting, and switches the rotary switch to change the direction of the material feeding member. Since the material is returned by reversing the material, it is not only possible to reliably return the material at the end of cutting, regardless of its length. However, the adjustment holder does not return to its original position while the material is being fed, and therefore the end of cutting is not detected, so it is convenient that the material is not returned until the end of the material is sped up and the entire length of machining is completed. Even when the material feeding speed is changed according to finishing conditions, the material can be reliably returned after cutting.

Next, an embodiment of the apparatus according to the present invention will be described below with reference to the drawings.

In the figure, 1 is the fuselage, on which a table 2 is fixed, and in the center of the table 2 there is a circular recess 3 as shown in Figure 1 of the figure.
A circular copper plate 4 is rotatably fitted into the recessed portion 3, a knife stock 5 is inserted into the circular copper plate 4 in a freely removable manner, and a regulating force 6 is attached to the knife stock 5, or a table is provided. A diagonal groove 7 is provided in the center of the knife 2 as shown in Figure 5 of the drawings, and a knife stock 8 with a force adjustment 6 attached thereto can be freely inserted into and removed from the groove 7, or as shown in Figure 4 of the drawings. As shown in the figure, a long diagonal groove 10 is provided across the central table 2 and the shaft portions 9°9 on both sides thereof, and within this diagonal groove 10, force regulating forces 6, 6 in opposite directions are installed side by side. The silver disk 11 is fitted.

Reference numeral 12.12 denotes a pair of columns erected on the body 1 on one side of the table 2, supporting an elevating body 13 so as to be able to rise and fall freely, and this elevating body 13 was supported by the joining material 14 of the column 12.12. The feed screw 15 is screwed together to adjust the elevation, and a pair of rollers 16 are provided at the front and rear of the elevating body 13.
．． A belt-type material feeding member 18 stretched over the material feeding member 17 is provided, and a reversible electric motor 20 is linked to this material feeding member 18 via a speed reducer 19.

Reference numeral 21 denotes a detector such as a micro-switch, which is slightly moved in the feeding direction when cutting the material, and is returned by a return member 22 such as a spring after the cutting is completed.
The knife stock 8, the sliding silver disk 11, etc. are installed opposite to the side of the force adjustment holder that moves slightly, and are turned on and off by the slight movement and restoration of the force adjustment holder, thereby detecting the completion of cutting of the material.

A rotation switching device 23 is connected to the detector 21 and converts the rotation of the reversible motor 20 into forward and reverse directions.

24 is a timer that appropriately delays the detection signal of the detector 21 and transmits it to the rotation switch 23.

In addition, in this device, a rotating mechanism A rotated by a reversible electric motor 24 is linked to a circular silver disc 4, and the rotating mechanism A rotates the circular silver disc 4 to change the direction of the adjusting force 6 supported by it back and forth. Or, alternatively, the oppositely facing control force 6 attached to the sliding silver disc 11 can be moved alternately to the two surfaces of the table, or, although not shown in the drawing, the forward and rearward facing control force 6 can be installed on the table 2. When performing reciprocating cutting of material using
As shown in the figure and FIG. 3, two sets of detectors 21 and 21 are provided on the front side and the rear side of the force adjustment holder 4, and the end of cutting is detected alternately by these, and the rotation of the reversible motor 20 is alternately controlled. By converting it into forward and reverse directions and setting the number of times of switching using a setting circuit, it is possible to freely perform reciprocating cutting of the material any number of times.

Reference numeral B denotes a reciprocating mechanism such as a cylinder linked to the sliding silver disc 11, which reciprocates the sliding silver disc 11 back and forth to alternately position the forward and rearward adjusting forces 6, 6 on the table 2.

One embodiment of the device according to the present invention is constructed as described above, and therefore, as shown in FIG. In this case, by rotating the material feeding member 18 in the direction of the arrow in the same figure and feeding the material to the lower part thereof, the material will be transferred to the material feeding member 1.
8 pushes the table 2, and the force is transferred to the adjustment holder 4.
, the holder 4 moves slightly against the force of the return member 17, turns off the detector 21, and allows the material feeding member 18 to continue feeding the material, so that the material advances over the planer blade 6. When the lower surface of the material is cut and the cutting is completed and the material is removed from the force-adjusting holder 4, the material feeding force no longer acts on the holder 4, so the holder 4 is returned by the return member 17 and its The adjacent detector 21 is turned on, detects the end of cutting the material, and sends a detection signal to the rotation switch 22.
2 to reverse the reversible motor 20, the material feeding member 18 changes its rotational direction immediately after finishing cutting the material, and returns the material to the front of the table 2. This operation Even if there is a notch in the middle of the material and cutting is interrupted at this part, the pressurization of the adjustment holder 4 is maintained. Since the detector 21 does not detect the end of cutting, material feeding continues, and even material with notches does not return midway, and is not returned until it has been completely fed to the end and the entire length has been processed. Tomorrow.

In particular, this device detects the end of cutting by the action of the adjusting holder 4 being reset by the return member 17 after the material feeding force is removed, and the rotation switch 22 is actuated. Even if the material feeding speed is changed according to the cutting speed, the material can be reliably returned after cutting.

Furthermore, when the detector 21 is provided at the rear lower part of the knife stock 8 as shown in FIG. 5
As shown in the figure, when the detector 21 is installed opposite to the rear or side surface of the knife stock 8, which moves slightly in this direction due to the lateral pressure due to the material feeding force during cutting, the detector 21 is placed on the side of the knife stock 8 while cutting the material. The material is activated by the slight movement of the material, and returns to its original state upon completion of cutting and ceases to work. Therefore, in this case as well, the detector 21 detects the completion of cutting, and the material can be returned in the same manner as described above.

Furthermore, this device rotates a circular silver plate 4 provided on a table 2 by a rotation mechanism A as shown in FIG. As shown in Figure 4 of the drawing, the sliding silver plate 11 is reciprocated by the reciprocating mechanism B, and the forward and backward adjusting forces 6 are positioned on the table surface, or the table 2 is placed in the forward direction, although not shown in the drawing. When carrying out reciprocating material feeding as described above with a backward adjusting force, it is possible to perform reciprocating cutting to cut the material in the reciprocating process. As shown in Figure 3, two sets of detectors 21, 21 are installed before and after the physical strength holding body, and if the end of cutting is detected in both the reciprocating operation and the material is returned, the material can be reciprocated any number of times. It is also possible to perform cutting work.

[Brief explanation of the drawing]

The drawing shows one embodiment of the device according to the present invention.
The figure is a side view of a circular woodworking machine equipped with this device. Figure 2 is a top plan view. Figure 3 is a side view of the sliding copper disc type woodworking machine. Figure 4 is a top plan view. FIG. 5 is a plan view of the knife stock type woodworking machine with the elevating body omitted. 6 and 7 are longitudinal sectional side views showing the structure and operation of the device. FIG. 8 is a wiring diagram. In the figure, 2 is a table, 6 is a force adjustment, 18 is a material feeding member, 4, 8, and 11 are force adjustment holders,
21 is a detector, and 22 is a rotation switch.

Claims (1)

[Claims] 1. In a woodworking machine equipped with a table equipped with a force adjustment and a material feeding member that feeds the material back and forth by changing the rotational direction in correspondence with the table, the force adjustment holder is adjusted in the material feeding direction by the material during cutting. After the cutting is completed, the power adjustment holder is moved slightly to the center and restored by the return member, and on the side where the force adjustment holding body moves slightly, a cutting end detector that turns on and off due to the fine movement and restoration is installed oppositely. A reciprocating material feeding device for a woodworking machine, characterized in that a container is connected to a rotation switching device of a material feeding member.