JP3520036B2 - Safety devices in woodworking machines - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for a woodworking machine which prevents a thin plate material from jumping in the exit direction due to machining of a blade shaft when the thin plate material is conveyed.

[0002]

2. Description of the Related Art Conventionally, in a woodworking machine such as a double end tenor, as shown in FIGS. 6, 7 and 8, a fixed side frame member 2a and a moving side frame member 2b mounted on a base member 1 are used.
The movable side frame member 2b is mounted on the movable side frame member 2b by rotating the screw shaft 4 by the gap adjusting motor 3 to adjust the distance between the fixed side frame member 2a and the movable side frame member 2b. Caterpillar chains 5a and 5 on the material 2b, respectively
b is attached, these track chains 5a, 5b
Is rotated by a rotary shaft 7 connected to a rotary motor 6.

Further, presser belts 8a and 8b are attached to the upper portions of the caterpillar chains 5a and 5b, respectively, and support members 9a, 9b and 10a, 10a and 10b are attached to the presser feet 8a and 8b, respectively.
b is fixed, and the support members 9a and 9b are the first columns 11
a, 11b, the support members 10a, 10b are the second support columns 1
2a, 12b are slidably mounted on the upper and lower sides, respectively, and these support members 9a, 9b and 10a, 10b are lift motors 13a, 1b mounted on the first support columns 11a, 11b.
It is moved up and down by rotating the rotary shafts 14a and 14b with 3b.

Further, the caterpillar chains 5a, 5b are connected to the rotary shafts of the presser belts 8a, 8b via the rotary connecting members 15a, 15b connected to the rotary shaft 7, and the rotary motor 6 is rotated to rotate the presser belts. 8a and 8b are rotated, and a ruler 17 for positioning one side of the plate material 16 carried into the fixed side frame material 2a on the side of the caterpillar chain 5a on the inlet side A is attached to change the processing position of the plate material 16. For this purpose, a motor 18 for positioning the ruler 17 is mounted.

Circular saw shafts 20a and 20b and snoring shafts 21a and 21b are mounted on front and rear members 19a and 19b respectively mounted on the side surfaces of the first support columns 11a and 11b, and the front and rear members 19a and 19b are positioned. Motor 22
a and 22b are moved back and forth in the direction of the caterpillar chains 5a and 5b.

Further, first elevating front and rear members 23a and 23b are attached to one side surface of the second supporting columns 12a and 12b, respectively, and the first elevating front and rear members 23a and 23b are the upper portions of the second supporting columns 12a and 12b. The height adjusting motors 24a and 24b and the front and rear movement motors 25a and 25b mounted on the upper and lower parts move and position the upper and lower parts and the front and rear members 23a and 23b, and the cutter shafts 26a and 26b.
b, and the second lifting front-rear member 27 mounted on the other side surfaces of the second columns 12a and 12b, respectively.
a and 27b are vertically and forwardly and backwardly positioned by height adjusting motors 28a and 28b and front and rear motors 29a and 29b mounted on the upper portions of the second support columns 12a and 12b, respectively, and second elevating front and rear members 27a and 27b. The cutter shafts 30a and 30b are attached to the respective shafts.

In the conventional woodworking machine such as the double-end tenor configured as above, the lifting motors 13a and 13b are driven in advance according to the thickness of the plate material 16 to move the presser belts 8a and 8b up and down. Caterpillar chains 5a, 5b
When the plate material 16 carried in from the inlet side A is placed on the caterpillar chains 5a, 5b with one side thereof contacting the ruler 17, the caterpillar chains 5a, 8b are set. Chains 5a, 5b and presser belt 8
It is fixed and conveyed between a and 8b.

When the plate material 16 is conveyed to the positions of the circular saw shafts 20a, 20b and the snoring shafts 21a, 21b, the side surface of the plate material 16 is grooved by the snoring shafts 21a, 21b, and then the circular saw. Machining again with the shafts 20a, 20b to prevent fluffing on the machined surface, and then with the cutter shafts 26a, 26
The plate material 16 carried out by the worker who is on the exit side B of the caterpillar chains 5a and 5b after being subjected to the cutter processing with b and 30a and 30b is a product pallet (not shown).
On top of.

[0009]

By the way, in the woodworking machine such as the double-end tenor configured as described above,
When a worker who carries in the plate material 16 at the entrance side A accidentally carries in a thin plate material 16 that cannot be pinched by the caterpillar chains 5a, 5b and the holding belts 8a, 8b, the plate material 16 is inserted into the circular saw shafts 20a, 20b or Snake shaft 21a, 2
If the plate material 16 is not sandwiched between the caterpillar chains 5a, 5b and the presser belts 8a, 8b when it is processed by 1b, the circular saw shafts 20a, 20b or the snail shafts 21a,
21b causes the plate material 16 to move to the caterpillar chains 5a, 5
The sheet material 16 that is blown off between b and the holding belts 8a and 8b violently and hits the operator who moves from the top of the caterpillar chains 5a and 5b to another position at the exit side B, and in some cases, a large sheet There was a problem of becoming an accident.

[0010]

According to the present invention, there is provided a rotating caterpillar chain in which a plate material, which is carried in from an entrance portion with one side applied to a ruler, is attached to a frame material, and a caterpillar chain which is lifted and lowered above the caterpillar chain. In a woodworking machine that is conveyed by a holding belt that is rotated in synchronization, and is a circular saw attached to each of the upper and lower sides or side portions of the caterpillar chain, and both side and upper and lower surfaces of the plate material are processed by a cutter, A one-way clutch that rotates in synchronization with the caterpillar chain is attached to the outlet of the frame member, a stopper is attached to the one-way clutch in an idle state, and a wheel is attached to an end of a lower arm of the stopper, Install so that the wheel of the lower arm of the stopper is always located below, and during normal passage of the plate material, use the plate material. When the wheel of the stopper is pushed up and passed, and the plate material abnormally passes, the stopper prevents the one-way clutch from rotating, and the wheel of the stopper is always located below. A weight may be attached to the wheel, or a spring may be attached to the upper arm of the stopper so that the wheel of the stopper is always located below.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a one-way clutch, which is rotated in synchronization with a caterpillar chain and a presser belt, has a stopper attached in a free-wheeling state, and a wheel attached to a lower arm of the stopper is always located below. Therefore, when the plate material that is normally carried out pushes the wheel of the stopper, the lower arm of the stopper rotates due to the idling of the one-way clutch, and the wheel material is pushed up by the plate material to pass through, but the plate material is carried out at an abnormal speed. At this time, when the plate collides with the wheel of the lower arm of the stopper, the one-way clutch is synchronized with the caterpillar chain and the presser belt, so that it does not idle and the rotation of the lower arm of the stopper is suppressed. It can be stopped.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a plan view of a woodworking machine such as a double end tenoner according to one embodiment of the present invention, FIG. 2 is a side view of the woodworking machine of FIG. 1, and FIG. 3 is an outlet of the woodworking machine of FIG. FIG. 4 is an enlarged view of the stopper device as viewed from the side, 1 is a base member,
2a is a fixed side frame member, 2b is a moving side frame member, 3 is a gap adjusting motor, 4 is a screw shaft, 5a and 5b are caterpillar chains,
6 is a rotary motor, 7 is a rotary shaft, 8a and 8b are holding belts, 9a, 9b and 10a and 10b are support members, 11
a and 11b are first columns, 12a and 12b are second columns, 13a and 13b are lifting motors, 14a and 14b are rotating shafts, 15a and 15b are rotary connecting members, and 16 is a plate material.
7 is a ruler, 18 is a motor, 19a and 19b are front and rear members,
20a and 20b are circular saw shafts, 21a and 21b are rake shafts,
22a and 22b are positioning motors, 23a and 23b are first elevating front and rear members, 24a and 24b are height adjusting motors, 25a and 25b are longitudinal motors, 26a and 26b are cutter shafts, and 27a and 27b are second. Front and rear members of 2
Reference numerals 8a and 28b are height adjusting motors, 29a and 29b are front and rear motors, and 30a and 30b are cutter shafts. Since these configurations are the same as those in the above-mentioned conventional example, description thereof will be omitted, but in the present embodiment. As shown in FIGS. 4 and 5, mounting bases 31 are provided on the outlet sides of the fixed frame member 2a and the moving frame member 2b, and support members 32 are fixed to the mounting bases 31, respectively. Gears 34 are attached to one ends of the supported rotating shafts 33, one-way clutches 35 are attached to the other ends of the rotating shafts 33, and lower arms 36 are fixed to the housings of these one-way clutches 35. A wheel 37 is attached to the lower end of 36.

Further, a gear 38 is mounted on the gear 34 of the support member 32, and the caterpillar chains 5a, 5
The gear 39 is attached to the rotary shaft 7 that rotates b.
Chain 40 hung on each gear 34
And 38 so that the rotation of the one-way clutch 35 is in the same direction as the rotation of the caterpillar chains 5a, 5b, and further, the fixed arm 41 attached to the support member 32 and the upper portion fixed to the one-way clutch 35, respectively. A spring 43 is hooked between the arms 42, and the lower arm 36 is mounted so as to always rotate in a direction opposite to the rotation direction of the one-way clutch 35, thereby forming a stopper.

In the safety device for a woodworking machine of this embodiment having the above-mentioned structure, the plate member 16 is the caterpillar chain 5a,
5b and the holding belts 8a and 8b, the plate material 16 is held between the lower belt 3 and the lower arm 3 of the stopper.
After the plate material 16 is carried out by pushing up the wheel 37 attached to the lower end of 6, the lower arm 36
Is returned to its original position by the spring 43 hung between the fixed arm 41 and the upper arm 42, but the plate material 16 is not held between the caterpillar chains 5a, 5b and the presser belts 8a, 8b, and the circular saw shaft 20a. , 20b and cutter shafts 26a, 2
6b, 30a, and 30b, the wheel 37 of the lower arm 36 of the stopper is pushed by the plate material 16 that has been skipped, but the rotation of the lower arm 36 causes the one-way clutch 35 to rotate.
The rotation of the lower arm 36 is suppressed by the one-way clutch 35, and the plate member 16 is reliably stopped by the wheel 37.

In the above-mentioned embodiment, the wheel 37 mounted on the lower arm 36 is always positioned below by the spring 43 provided between the fixed arm 41 and the upper arm 42. If the wheel is heavier, the wheel 37 can always be positioned downward due to inertia.

[0016]

As described above, in the safety device for the wood working machine of the present invention, the one-way clutch that is rotated in synchronization with the caterpillar chain and the press belt is provided with the stopper in an idle state, and is attached to the lower arm of the stopper. By keeping the mounted wheel always below, when the plate material that is normally carried out pushes the stopper wheel,
The lower arm of the stopper rotates due to the idling of the one-way clutch, and the plate material pushes up the stopper wheel with the plate material to allow the plate material to pass.However, when the plate material is unloaded at an abnormal speed, the plate material collides with the wheel of the lower arm of the stopper. Since the one-way clutch is synchronized with the caterpillar chain and the pressing belt, there is an advantage that the one-way clutch does not run idle, the rotation of the lower arm of the stopper is suppressed, and the plate material that passes abnormally can be stopped.

[Brief description of drawings]

FIG. 1 is a plan view of a woodworking machine according to an embodiment of the present invention.

2 is a side view of the woodworking machine of FIG. 1. FIG.

FIG. 3 is a view of the woodworking machine seen from the carry-out side.

4 is a side view of a safety device portion of the woodworking machine of FIG. 1. FIG.

5 is a view of a part of the safety device of FIG. 4 as viewed from the carry-out side.

FIG. 6 is a plan view of a conventional woodworking machine.

FIG. 7 is a side view of the woodworking machine of FIG. 6.

FIG. 8 is a view of the woodworking machine of FIG. 6 viewed from the carry-out side.

[Explanation of symbols]

31 mounting table 32 Support member 33 rotation axis 34 gears 35 one-way clutch 36 Lower arm 37 wheels 38, 39 gears 40 chains 41 fixed arm 42 Upper arm 43 spring

Claims (3)

(57) [Claims] 1. A rotating caterpillar chain in which a plate material loaded into a frame member with one side applied to a ruler is attached to a frame material, and a holding belt which is elevated and lowered above the caterpillar chain and is rotated in synchronization with the caterpillar chain. In the woodworking machine which is carried by the circular saw attached to the upper and lower sides or the side portions of the caterpillar chain, and the side and upper and lower surfaces of the plate material are processed by the cutter, the outlet portion of the frame material is A one-way clutch that rotates in synchronization with the caterpillar chain is attached, a stopper is attached to the one-way clutch in an idle state, a wheel is attached to the end of the lower arm of the stopper, and the wheel of the lower arm of the stopper is Install so that it is always located below, and push the stopper wheel with the plate during normal passage of the plate. A safety device for a woodworking machine, characterized in that the stopper is prevented from rotating by the one-way clutch when the plate material passes through an abnormally raised position. 2. The safety device for a woodworking machine according to claim 1, wherein a weight is attached to the wheel so that the wheel of the stopper is always located below. 3. The safety device for a woodworking machine according to claim 1, wherein a spring is attached to an upper arm of the stopper so that the wheel of the stopper is always located below.