JPH0123766Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a protective device for a saw machine, and particularly to a so-called scroll saw machine in which a long and narrow saw tooth is moved up and down.

(Prior Art) This type of scroll saw uses an elongated saw blade with teeth on the front part, and supports the upper and lower ends of the saw blade with the saw blade passing through the table so that it can reciprocate in the vertical direction. In addition, the rear part of the saw blade on the table is guided by a guide member to prevent the saw blade from swinging, and the worker places his/her hand on the workpiece placed on the table and moves it. The cutting process is carried out by moving the saw on the table while pressing it against the saw teeth from the front.

(Problem that the invention attempts to solve) However, with the above-mentioned saw machine, cutting is performed by placing the hand on the workpiece placed on the table.
The hand that is placed on the workpiece may get close to the saw blade and accidentally come into contact with the saw blade, causing an accident that could result in injury.
It was dangerous.

In addition, when cutting a workpiece, vertical force is applied to the workpiece due to the vertical movement of the saw blade, and if the force of the hand pressing the workpiece against the table is weakened, the workpiece may It is difficult and extremely dangerous to press a workpiece that is floating and swinging up and down from the table surface to the table surface.

The present invention was developed in view of the above-mentioned problems, and it is possible to reliably prevent workers' hands from getting close to the saw teeth during cutting, and also to prevent the workpiece being cut from being injured. The purpose of the present invention is to provide a protective device for a saw machine that can prevent the saw from floating up and swinging up and down, and can also dispose of chips that come out on the top surface of the workpiece during cutting. be.

[Structure of the idea]

(Means for Solving the Problem) The present invention moves the sawtooth 24 having teeth on the front side up and down while penetrating the table 17, and the rear side of the sawteeth 24 on the table 17 is moved up and down by the guide element 24.
In the saw machine 15, which is supported movably up and down at 9 and cuts a workpiece 35 moved on a table 17 by pressing it against the saw teeth 24 from the front, the saw blade is divided into front and rear parts in a cylindrical shape that surrounds the saw teeth 24. The cover body 1 has a cover body 1 whose front side can be opened and closed, and this cover body 1 has a transparent cover 4 on the front side, a net 5 on the rear side, and a workpiece 3 on the table 17 on the lower edge. A ring portion 7 is provided close to and opposite to the upper surface of the guide member 29, and is fixed to the support 28 of the guide element 29 via the ring portion 7.

(Function) In the present invention, the workpiece 3 placed on the table 17
When the worker is cutting the workpiece 35 by moving it with his or her hand, the hand that is being placed on the workpiece 35 may touch the sawtooth 24.
Even when approaching the saw teeth 24, the ring portion 7 of the cover body 1 surrounding the saw teeth 24 contacts the ring portion 7, and the approach to the saw teeth 24 is restricted. Furthermore, if the force of the hand pressing the workpiece 35 against the table is weakened while cutting the workpiece 35, the workpiece 35 will float up from the top surface of the table 17 and begin to swing up and down.
The ring portion 7 of the cover body 1 restricts the floating of the workpiece 35, and prevents the workpiece 35 from rising significantly and swinging up and down.

In addition, chips that come out on the top surface of the workpiece 35 due to cutting are gathered to the rear side of the cover body 1 by the cutting movement of the workpiece 35 from the front to the rear, and are passed through the net 5 to the outside of the cover body 1. Go out. Moreover, for example, when air is blown from the front to the cutting area inside the cover body 1, the air flows out through the net, which causes air turbulence inside the cover body 1, causing chips to fly around. It exits to the outside of the cover body 1 through the net 5 without any leakage.

(Embodiment) Hereinafter, the configuration of an embodiment of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 denotes a cylindrical cover body with open upper and lower surfaces, and is composed of a front frame body 2 and a rear frame body 3, which are divided into two parts in the front and back, and this front frame body 2 is made of transparent acrylic resin or the like. Transparent cover 4 with transparency
The rear frame body 3 consists of a net 5 and this net 5.
a holding frame 6 holding the peripheral edge of the holding frame 6;
Semi-annular ring portions 7, 7 are attached to the outer peripheral edges of the lower ends of the frames 2, 3, respectively.

Also, hinges 8, 8 are attached to the upper and lower parts of one of the edges where the front and rear frames 2, 3 come into contact with each other, and the front frame 2 can be opened and closed around these hinges 8, 8. They are connected to each other, and magnetic pieces 9, 9 are attached to the upper and lower parts of the other, respectively, and the front and rear frames 2, 3 are attached by adsorption of both magnetic pieces 9, 9.
can be held in a cylindrical shape.

In addition, a mounting hole 10 is provided at the center of the lower part of the rear frame body 3 to pass through the holding frame 6 and the ring portion 7 .

On the other hand, in the figure, 15 is a saw machine, and head 1
6, a table 17, and a base 18, and within this base 18 is a gear box 19 that converts the rotational motion transmitted from the motor into vertical reciprocating motion.
is installed. A drive shaft 20 that moves up and down is projected from the upper part of the gearbox 19, and a through hole 21 is provided in the table 17 above the drive shaft 20 so as to pass through the upper surface of the table 17. A driven shaft 22 is provided so as to be movable up and down facing the driven shaft 22, and holders 23, 23 are provided at the opposing ends of the driven shaft 22 and the drive shaft 20, respectively, and these drive shaft 20 and the driven shaft 22, an elongated sawtooth 24 having teeth on the front side is mounted with its upper and lower ends held by respective holders 23, 23.

Further, behind the driven shaft 22 of the head 16,
A guide arm 26 is inserted through which the fixing position in the vertical direction can be adjusted using an adjustment screw 27. A support 28 is attached to the lower end of the guide arm 26, and a roller-shaped guide 29 is rotatably provided at the front end of the support 28, and this guide 29 comes into contact with the rear side of the sawtooth 24. and hold the sawtooth 24
Prevents runout. Further, a screw hole 30 is formed at the rear end of the support 28, into which a fixing screw 31 inserted through the ring portion 7 of the rear frame 3 and the mounting hole 10 of the holding frame 6 is screwed. As a result, the cover body 1 is attached to the support 28.

Further, one end of a spring piece 32 is fixed between the support 28 and the inside of the rear frame body 3 together with the rear frame body 3 by a fixing screw 31.
At the other end of 2, a curved contact piece 33 is formed which is elastic and comes into contact with the upper surface of the workpiece on the table 17.

Next, the operation of this embodiment will be explained.

The cover body 1 is attached to the sawing machine 15 using the support tool 2.
The spring piece 32 and the rear frame body 3 can be easily attached by the fixing screw 31 screwed into the spring piece 8.

To adjust the height position of the cover body 1, loosen the adjustment screw 27 and adjust the height of the workpiece 3 placed on the table 17.
By bringing the contact piece 33 of the spring piece 32 into contact with the upper surface of the workpiece 35, the elastic action of the spring piece 32 creates a slight gap between the upper surface of the workpiece 35 and the ring parts 7, 7 of the cover body 1. This can be easily done by setting the gap to be substantially constant and finally tightening the adjustment screw 27.

Then, in order to cut the workpiece 35,
The operator places his/her hand on the workpiece 35 placed on the table 17 and moves the workpiece 35 onto the table 17 while pressing the workpiece 35 against the teeth of the saw teeth 24 from the front.
7. Move above and cut.

At this time, since the cover body 1 surrounds the sawtooth 24, even if the hand placed on the workpiece 35 approaches the sawtooth 24, it will come into contact with the ring parts 7, 7 and be prevented from approaching the sawtooth 24. It will be regulated and safety will be ensured.

Furthermore, when cutting the workpiece 35, vertical force is applied to the workpiece 35 due to the vertical movement of the saw teeth 24, which weakens the force of the hand pressing the workpiece 35 against the table. , the workpiece 35 floats up from the top surface of the table 17 and begins to swing up and down, but the lower edge of the cover body 1, especially the ring parts 7, restricts the workpiece 35 from floating up.
The amplitude with which the workpiece 35 floats and swings up and down is small, and it is easy and safe to press the workpiece 35 in this state against the upper surface of the table 17.

Further, the front frame body 2 of the cover body 1 is a transparent cover 4.
Since the condition of the workpiece 35 and the sawtooth 24 can be checked at all times, it is possible to prevent chips from the workpiece 35 and broken pieces of the sawtooth 24 from flying toward the operator.

By the way, chips that come out on the top surface of the workpiece 35 due to cutting are gathered inside the rear frame 3 of the cover body 1 as the workpiece 35 moves from the front to the rear. The side frame body 3 is composed of a net 5, and the chips are discharged to the outside through the net 5, so that the chips do not accumulate more than a certain amount inside the cover body 1. Moreover, for example, if air is blown from the front to the cutting area inside the cover body 1,
Since the air exits to the outside through the net, air turbulence is generated within the cover body 1 and chips can be discharged to the outside of the cover body 1 through the net 5 without flying around. can be seen in good condition at all times without being obscured by chips.

Note that the saw teeth 24 can be easily replaced by opening the front frame 2 of the cover body 1.

[Effect of idea]

According to the present invention, even if the hand that is placed on the workpiece approaches the sawtooth during cutting, the hand comes into contact with the ring part of the cover body that surrounds the sawtooth, preventing the hand from approaching the sawtooth. In addition, the ring part of the cover body can prevent the workpiece from floating up and down from the table, and even if the workpiece floats up, it can be easily and safely held down on the table surface. can. Moreover, the chips that come out on the top surface of the workpiece during cutting are gathered to the rear side of the cover body as the workpiece moves from the front to the rear, and exit to the outside of the cover body through the net.
It can prevent chips from accumulating more than a certain amount inside the cover body, and for example, if air is blown from the front to the cutting area inside the cover body, the air will go out through the net, so the air inside the cover body will be The chips can be sent out through the net to the outside of the cover body without causing turbulent flow and flying around, and the cutting state of the workpiece can always be checked in good condition without being obscured by chips. .

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a protection device for a saw machine according to the present invention, and FIG. 2 is a side view thereof. 1... Cover body, 4... Transparent cover, 5... Net, 7... Ring section, 15... Sawing machine, 17...
Table, 24...Sawtooth, 28...Support, 29
... Guide, 35 ... Artifact.

Claims (1)

[Claims for Utility Model Registration] A saw tooth having teeth on the front side is moved up and down while passing through the table, and the rear side of the saw tooth on the table is supported by a guide so that it can move up and down, and the saw tooth is moved on the table. A saw machine that cuts a workpiece by pressing it against the saw teeth from the front, has a cylindrical cover body that surrounds the saw teeth and is divided into front and rear parts, the front side of which can be opened and closed; A transparent cover is provided on the holder, a net is provided on the rear side, and a ring portion is provided on the lower edge of the workpiece that closely opposes the upper surface of the workpiece on the table, and is fixed to the support of the guide through the ring portion. A protective device for a saw machine characterized by: