JPH0123614Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a manual plate end folding device.

(Prior art) Conventionally, as a device for bending the edge of a plate, a workpiece is held between a base and a holding plate, and the base and holding plate are bent by rotating a drive plate rotatably attached to the end of the base. It is known that the part of the workpiece protruding from the plate is bent using the edge of the holding plate as a fulcrum (Japanese Utility Model Publication No. 53-34362).

In this device, in order to sandwich the workpiece between the base and the holding plate, the holding plate is made to move forward and backward with respect to the base, and a bolt is passed through a through hole formed in the holding plate, and the protruding bolt is inserted into the holding plate. It is screwed into a screw hole formed in the base. Loosen the bolt, insert the workpiece with a large gap between the base and the holding plate, align the bending position, and then tighten the bolt to fix the workpiece. However, since the projecting part of the workpiece is then held down and bent using the edge of the plate as a fulcrum, it is troublesome to attach the workpiece and to remove the bent workpiece, and the work efficiency is reduced. It was bad and inefficient.

(Problem to be solved by the invention) This invention enables accurate bending along the marking lines without requiring any skill.
It is an object of the present invention to provide a bending device for the end of a plate material, which has good workability and is capable of bending a workpiece even if the size of the workpiece is large.

(Means for Solving the Problems) As a means for solving the above problems, the plate end bending device of the present invention has the following features: A fixed pedestal 2 on the substrate 1, and a top surface of the pedestal 2 that can freely come into contact with and separate from the bending device. Supported clamp/folding table 11
and a processing plate 4 supported at the rear of the pedestal 2 to be able to rise and fall to an upright position where it substantially contacts the folding table main body edge 13 of the clamp-cum-folding table 11 when abutted on the pedestal 2; and a clamp fixing device that removably holds the clamp/folding table 11 in contact with the pedestal 2, and the clamp fixing device is provided protrudingly on the substrate 1 at the rear of the pedestal 2. A support cylinder 14 is provided to protrude from the rear of the support block 8 which has been
A slide piece 16 is slidably inserted into the slide piece 16, and one end of the lever 18 is attached to the slide piece 16, and the lever 2 is attached to the rear part of the arm 9 of the folding table 11 that also serves as a clamp.
One end of the lever 20 is provided with a link mechanism in which the other end of the lever 18 is rotatably connected to the intermediate part of the lever 20, and the support shaft 22 of the lever 20 and the lever 18 is connected to the lever 20 and the arm 9. supporting shaft 2
1 and the support shaft 1 between the lever 18 and the slide piece 16
A configuration is adopted in which the lever 20 can be pushed down to a position slightly beyond the straight line l connecting the lever 20 and the lever 20. The details of the present invention will be explained below with reference to the drawings.

(Example) In the figure, a horizontally long rectangular pedestal 2 is fixed horizontally to the front end of the board 1 (left end in FIGS. 1 to 3),
A rectangular processed plate 4 having the same lateral length as the pedestal 2 is attached to a pair of left and right arms 3 fixed to both left and right end surfaces of the pedestal 2 and protruding rearward, and is connected by a shaft 5 to a rectangular processed plate 4 that is substantially the same as the pedestal 2. The working plate 4 is supported so as to be able to swing up and down from a horizontally laid down position forming a plane to an upright position forming a right angle with the pedestal 2 or at a slightly larger angle, and a pair of left and right arms 6 are provided protruding from the free end of the working plate 4. , a bending operation handle 7 between the ends of both arms.
are connected. On the other hand, a pair of left and right support blocks 8 consisting of two pieces is protruded from the rear part of the board 1.
One end of a substantially U-shaped arm 9 is swingably supported by a shaft 10 on both support blocks 8 so that the other end can swing up and down onto the pedestal 2. A folding table 11 which also serves as a clamp is fixed to the other end. The folding table 11 which also serves as a clamp is mounted on the lower surface of the horizontally long rectangular block.
A rectangular plate-shaped folding table main body 12 with approximately equal horizontal length is fixed, and as the arm 9 swings, the folding table main body 12 comes into full contact with or separates from the upper surface of the receiving table 2, and the contact When the folding table main body 1
The rear end edge 13 of No. 2 is placed in a positional relationship in which it can almost come into contact with the processing plate 4 that has swung to the above-mentioned upright position.

The clamp fixing device for holding the clamp/folding table 11 in contact with the receiving table 2 is as follows. Approximately cylindrical support tubes 14 having grooves 15 on the upper surfaces of the pair of left and right support blocks 8 protrude rearward and approximately horizontally from the rear portions thereof, and slide pieces 16 are slidably inserted into the support tubes 14. At the same time, the tip of the adjustment screw rod 17 that is screwed into the tip of the support tube 14 is rotatably connected to the slide piece 16, and one end of the lever 18 is connected to the pair of slide pieces 16 by a shaft 19, respectively. The other end of the lever 18 projects outward from the split groove 15, and one end of the lever 20 is rotatably connected to the rear bent portion of the pair of arms 9 by a shaft 21, and the lever 20 is connected to the middle part of the lever 20. The other end of the arm 9 is connected by a shaft 22, and a tension spring 23 is connected between the rear end of the arm 9 and the support cylinder 14, and a spring receiving plate 24 (the second The arm 9 is held by the compression spring 25 inserted between the board 1 (see Fig. 3) and the folding table 11 which also serves as a clamp is attached to the cradle 2.
It is constantly firing in the direction of swinging upwards and away from it. In this case, the levers 18, 20 have springs 23,
25, the lever 18 is bent upward as shown in the first figure, but when the lever 18 is pushed down against the springs 23 and 25 and the folding table 11 comes into contact with the receiving table 2, the lever 18 , 20 are on the straight line l connecting the shafts 19 and 21, and the lever 20 is further pushed down so that the swing regulating stopper 26 protruding from the upper side of the middle part of the lever 18 is brought into contact with the lever 20 as shown in the second figure. When they come into contact, the shaft 22 slightly exceeds the straight line 1, so that both levers 18, 20 are held in a slightly bent downward state as shown in the second figure by the elastic force of the springs 23, 25, and the above-mentioned folding The stand 11 is held in contact (clamped) with the pedestal 2.

27 is a clamp handle connected between the tip portions of the pair of left and right levers 20.

The operation of this device will be explained next. In the state shown in Fig. 1, place the plate material m to be processed on the pedestal 2,
Next, push down the clamp handle 27 and lightly lower the folding table 11 that also serves as a clamp onto the plate m,
In this state, align the marking line marked at the bending position of the plate material m with the edge 13 of the folding table main body 12,
In that state, as shown in the second illustration, clamp handle 2
7 is further pushed down to a position where it abuts against the swing regulating stopper 26, thereby fixing the clamp/folding table 11 at the above position. Next, as shown in the third figure, the bending operation handle 7 is pulled forward, the processing plate 4 is raised to the upright position, and the plate material m is bent between it and the folding table main body 12.

After processing, the folding handle 7 is returned to the rear to return the processed plate 4 to the laid down position, and when the clamp handle 27 is subsequently pulled up, the clamp is released and the folding table 11 that also serves as a clamp is moved above the plate material m by the action of the springs 23 and 25. They are separated, and the plate material m can be taken out.

(Effects of the invention) According to the sheet material end folding device of this invention, a worker can easily align the marking line of the sheet material with the edge of the folding table main body of the folding table that also serves as a clamp while looking from above, and then place the sheet material at that position. By holding and bending with a clamp fixing device, accurate bending along the marking line can be performed without any skill required.Also, since the plate material is bent upward by standing up the processed plate, the plate material Not only does the marking line not hide inside the folded part and spoil the appearance of the product, but even if the folding allowance is large, the folded part does not protrude below the folding table like in the past, making the work easier. There are advantages.

Further, the clamp fixing device is a link mechanism including a support block, a support cylinder, a slide piece, an arm, levers 18, 20, etc.
The supporting shaft of lever 20 and the supporting shaft of arm and lever 1
Since the lever 20 is configured so that it can be pushed down to a position slightly beyond the straight line connecting the support shaft between the lever 8 and the slide piece, the plate material can be fixed and held with one touch.
Moreover, since it is provided at the rear of the pedestal on the same side as the processed plate, even if the size of the plate is large, it is possible to bend the end of the plate, resulting in extremely good workability.

In addition, as in the embodiment, if the processed plate is pivoted on a bearing portion extending rearward from the side surface of the pedestal below the upper surface of the pedestal, the diagonal line of the plate material having part A shown in FIG. The parts shown can also be easily bent.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention, and Fig. 1 is a partially cutaway side view before use, Fig. 2 is a partially cutaway side view in a clamped state, Fig. 3 is a partially cutaway side view in a folded state, and Fig. 4 is a partially cutaway side view of the invention. This figure is a plan view of a portion of the state shown in FIG. 2, and FIG. 5 is a plan view showing a bent portion of the deformed plate material. 1... Board, 2... Rest, 4... Processing board, 8
... Support block, 9 ... Arm, 11 ... Clamp-cum-folding table, 14 ... Support cylinder, 16 ... Slide piece, 18 ... Lever, 19 ... Support shaft, 20 ...
...Lever, 21...Spindle, 22...Spindle, l...
Straight line.

Claims (1)

[Claims for Utility Model Registration] (1) On the board 1, a fixed pedestal 2, and a folding pedestal 11 which also serves as a clamp and is supported so as to be able to move toward and away from the top surface of the pedestal 2.
and a processing plate 4 supported at the rear of the pedestal 2 to be able to rise and fall to an upright position where it substantially contacts the folding table main body edge 13 of the clamp-cum-folding table 11 when abutted on the pedestal 2; and a clamp fixing device that removably holds the clamp/folding table 11 in contact with the pedestal 2, and the clamp fixing device is provided protrudingly on the substrate 1 at the rear of the pedestal 2. A support cylinder 14 is provided to protrude from the rear of the support block 8, and a slide piece 16 is slidably inserted into the support cylinder 14. A link mechanism is provided in which one end of the lever 20 is rotatably connected to the rear part of the arm 9 of the dual-purpose folding table 11, and the other end of the lever 18 is rotatably connected to the intermediate part of the lever 20. The support shaft 22 is the lever 2
A bending device for the end of a plate material, in which the lever 20 can be pushed down to a position slightly beyond the straight line l connecting the support shaft 21 of the arm 9 and the lever 18 and the support shaft 19 of the slide piece 16. (2) Utility model registration claim 1, wherein the processed plate 4 is pivotally supported by a bearing portion 3 extending rearward from the side surface of the pedestal 2 below the upper surface of the pedestal 2. The device for bending the ends of plate materials as described.