JPH0446726A - Material positioning device of cutting machine - Google Patents

Abstract

PURPOSE:To completely save labor by automatically changing over the set and reset conditions of a stopper piece in a material positioning device which positions the material which is carried in an open tip machining device. CONSTITUTION:In the condition before a material 51 is carried in, a stopper piece 35 is moved into the set condition where a material 51 advances into a carry-in passage 13 due to gravity of a positioning member 32. For this reason, when the material 51 is carried into the carry-in passage 13, end face of the material contacts the stopper piece 35 of the positioning member 32 and is positioned. When a cutting head is moved to cut the positioned material 51, a guide member 21 of the cutting head contacts a contact section 46 of the positioning member 32 and presses. The positioning member 32 is automatically moved into the reset condition where the stopper piece 35 retracts from the carry-in passage 13. When the cutting head is restored at wait position after cutting is done, it is automatically moved into the set condition where the stopper piece 35 advances into the carry-in passage 13 of the material 51.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a material positioning device for positioning a material being carried into a cutting machine.

(Prior Art) In a cutting machine, for example, a beveling machine, a cutting head moves in a direction perpendicular to the direction in which the material is carried in to cut the material.

This beveling machine is equipped with a material positioning device for positioning the tip end face position of the material being carried in.

In conventional material positioning devices, a stopper piece is rotatably supported on the side of a material entry path so as to be rotatable in the direction of movement of the cutting head, and during positioning, the stopper piece enters the entry path and hits the material being carried in. It is configured to manually switch between a set state in which the stopper piece is in contact with the tool and a reset state in which the stopper piece is retracted from the carry-in path during cutting.

However, in such a material positioning device, the stopper piece must be completely manually switched between the set state and the reset state.

Therefore, as shown in Fig. 5, a spring 3 is attached to a stopper piece 2 which is rotatably provided around the support shaft 1, and the stopper piece 2 is moved in the set direction or the reset direction with the neutral point 4 as the center point. to bias either of them, and
After the material is carried in with the stopper piece 2 set in the material entry path 5 and positioned by contacting the stopper piece 2, the cutting head moves to cut, thereby cutting the cutter attached to the cutting head. When the cover 6 comes into contact with the roller 7 of the stopper piece 2 and presses it in the reset direction, and the stopper piece 2 exceeds the neutral point 4, the stopper piece 2 is forcibly rotated by the spring 3 to the reset state. Therefore, the stopper piece 2 is automatically moved from the set state to the reset state.

(Problems to be Solved by the Invention) With the above-described positioning device, it is possible to automate the movement of the stopper piece from the set state to the reset state, thereby saving time and effort. Although it can be constructed inexpensively by just using a spring without using a driving means, moving the stopper piece from the reset state to the set state still has to be done manually, and the stopper piece can be moved between the set state and the set state. In order to maintain the reset state, the tension of the spring must be strong to some extent, so when the set stopper piece is pressed by the cutter cover, a large force is applied to the stopper piece and the cutter cover, causing the cutter cover to fall off or be damaged. Furthermore, a very strong force is required to manually move the stopper piece from the reset state to the set state.

The present invention has been made in view of these points, and aims to provide a material positioning device for a cutting machine that can automatically switch between a set state and a reset state of a stopper piece with a simple and inexpensive configuration. This is the purpose.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides a material positioning device 31 for a cutting machine in which a cutting head 16 moves in a direction perpendicular to the direction in which the material 51 is carried in and cuts the material 51. The cutting head 16 is rotatably supported on the side of the material 51 carrying-in path 13 in the moving direction, and the material 51 is rotatably supported on the side of the carrying-in path 13 by the center of gravity.
The stopper piece 35 has a stopper piece 35 that positions the material 51 by abutting the end face of the material 51 that is rotationally biased to the set state and carried into the carry-in path 13 . a positioning member 32 having
A stopper piece 35 is provided on the cutting head 16 and comes into contact with the abutting portion 46 of the positioning member 32 during cutting movement of the cutting head 16 to prevent the positioning member 32 from moving into the carry-in path 1.
Guide member 2 to be rotated from 3 to the retracted reset state
1.

(Function) In the present invention, before the material 51 is carried in, the stopper piece 35 is rotated to the set state in which it enters the material 51 carrying path 13 due to the relationship between the center of gravity of the positioning member 32.

Therefore, by carrying the material 51 into the carry-in path 13, the end surface of the material 51 is aligned with the stopper piece 35 of the positioning member 32.
is positioned in contact with the

Then, when the cutting head 16 is moved to perform cutting on the positioned material 51, this cutting head 16
The guide member 21 contacts and presses the contact portion 46 of the positioning member 32, and the positioning member 32 is automatically rotated to a reset state in which the stopper piece 35 is retracted from the carry-in path 13.

Further, after the cutting process, when the cutting head 16 returns to the original standby position, the stopper piece 35 automatically rotates to the set state in which it enters the material 51 loading path 13 due to the center of gravity of the positioning member 32. be done.

(Embodiment) Hereinafter, the configuration of an embodiment of the present invention will be described with reference to FIGS. 1 to 4.

3 and 4 show a beveling machine, in which a roller conveyor 12 for carrying in the material from the rear is disposed on the rear side of the base 11, and on the front side of the roller conveyor 12, one side of the material carrying-in path 13 is provided. A fixed side clamp 14 is disposed on the other side of the carry-in path 13, and a movable side clamp 15 is disposed on the other side of the carry-in path 13 to move toward and away from the fixed side clamp 14 and clamp the material between it and the fixed side clamp 14. furthermore, the clamp 14. A cutting head 16 is disposed on the front side of the +5 for cutting the clamped material by moving in the left-right direction perpendicular to the direction in which the material is carried in.

The cutting head 16 has a driving cutter 1 attached to each rotating shaft protruding from the upper surface of a cutter table 17 that moves in the left-right direction.
8. A scallop cutter 19 and a beveling cutter 20 are respectively attached, and a cutter cover 21 that surrounds the front sides of these cutters 18 to 20 is attached to the cutter stand 1.
It is attached to 7.

The cutter cover 21 is composed of a front plate 22 that covers the front surface of the cutters 18 to 20, a side plate 23 that covers the side surfaces, and a top plate 24 that covers the top surface. ing.

This beveling machine is equipped with a material positioning device 31 that positions the end face of the material to be carried in. It consists of an attached guide member (in this embodiment, it is constituted by the cutter cover 21).

As shown in FIGS. 1 and 2, the positioning member 32 has a cylindrical boss portion 3 having a boss hole 33 in the center.
4 is formed, and a stopper piece 35 and a weight part 36 are respectively formed to protrude from the boss part 34, and a bushing 37 is fitted into the boss hole 33 of the boss part 34, and a bushing 37 is fitted to the front and rear of the boss part 34. Place the collar 38 and open the boss hole 3.
The bolt 39 inserted from the front into the movable side clamp 15
By screwing onto the front surface of the support body 40 fixed above, it is rotatably supported around this bolt 39.

Further, the stopper piece 35 has a stopper surface 41 on the rear surface of which the material comes into contact, and a boss portion 43 having a screw hole 42 on the front end of the stopper piece 35 .
A rib 44 is formed between the boss part 34 and a bolt 47 inserted from the front into a roller 46 as a rotatable abutment part incorporating a bearing 45 into the screw hole 42 of the boss part 34. is screwed on via the collar 48.

Further, the weight portion 36 is formed in a block shape.

FIG. 1 shows the center of gravity O1 of the stopper piece 35 and the center of gravity 02 of the weight part 36, and the load P of the center of gravity O7 of the stopper piece 35 is greater than the center of gravity O1 of the weight part 36.
The load P2 of No. 7 is larger, and the relationship of P,<P2 is established.

Note that the edge of the stopper piece 35 comes into contact with the protruding piece 401 provided protrudingly on the side of the support body 40 when the stopper piece 35 enters the material entry path 13 to restrict rotation. A bolt 49 is screwed in.

The guide member is composed of the cutter cover 21 of the cutting head 16, and when the cutting head 16 moves for cutting, the side plate 23 and the top plate 24 come into contact with the rollers 46 of the positioning member 32 to rotate the positioning member 32. It is designed to move.

Next, the operation of this embodiment will be explained.

In the beveling machine, the material 51 is, for example, H shown in FIG.
It can perform driving, scalloping, and bevel processing on shaped steel, as well as bevel processing on square pipes and flat steel plates.

In a standby state before carrying the material 51 into this beveling machine, as shown in FIGS. 3 and 4, the cutting head 16 is placed in front of the rightmost stationary clamp 14, and the cutting head 16 is placed in front of the rightmost stationary clamp 14, and The clamps 15 and the stationary side clamps 14 are arranged at a distance that allows the material 51 to be carried into the carry-in path 13. Furthermore, the positioning member 32 attached to the movable clamp 15 is positioned closer to the weight portion 3 than the stopper piece 35 side.
Due to the center of gravity being heavier on the side 6, it is urged to rotate counterclockwise in FIG.
Rotation is restricted by contacting with.

Then, the material 51 is carried into the carrying path 13 between both clamps 14 and 15 from the rear of the beveling machine, and the end face of the material 51 is placed on the stopper surface 4 of the stopper piece 35 of the positioning member 32.
1, and the moving side clamp 15 is operated to clamp the material 51 between both clamps 14 and 15.

Then, the cutting head 16 that rotates each of the cutters 18 to 20 moves to the left to cut the end face of the material 51 with each of the cutters 18 to 20.

At this time, due to the cutting movement of the cutting head 16, the side plate 23 of the cutter cover 21 is moved against the roller 4 of the positioning member 32.
6 and presses it to the left, the roller 46 moves on the surface of the side plate 23 and the positioning member 32 rotates clockwise in FIG. go. Then, the side plate 2 of the cutter cover 21
The positioning member 32 rotates until the roller 46 moving on the surface of FIG.
As shown by the dotted chain line, the roller 46 moves on the upper surface of the upper plate 24 while the rotational posture of the positioning member 32 is kept constant. Therefore, the positioning member 32, which was in the set state when the stopper piece 35 entered the carry-in path 13, is automatically rotated to the reset state in which the stopper piece 35 is retracted from the carry-in path 13.

On the other hand, after the cutting of the material 51 is completed, the cutting head 16 that has moved to the left moves to the right and returns to its original standby position.

At this time, due to the return movement of the cutting head 16, the roller 46 of the positioning member 32 rolls on the upper surface of the top plate 24 in the opposite direction, and when this roller 46 moves from the top plate 24 to the side plate 23, As shown in FIG. 1, the positioning member 32 rotates counterclockwise in FIG. 1 due to the center of gravity of the positioning member 32. Therefore, while the roller 46 moves on the surface of the side plate 23, the positioning member 32 rotates counterclockwise in FIG. When the edge of the stopper piece 35 comes into contact with the bolt 49, the rotation is restricted and the side plate 23 separates from the roller 46. Therefore, the positioning member 3 was in the reset state in which the stopper piece 35 was retracted from the carry-in path 13.
2 is automatically returned to the set state in which the stopper piece 35 enters the carry-in path 13.

Therefore, it is possible to automatically switch between the set state and the reset state of the positioning member 32, and it is possible to cope with automation of the beveling machine.

In the above embodiment, the guide member is attached to the cutter cover 2.
1, the cutter cover 21 may be configured with a guide rail separate from the cutter cover 21.

〔Effect of the invention〕

According to the present invention, the stopper piece is automatically rotated to the set state in which the stopper piece enters the material entry path depending on the relationship between the center of gravity of the positioning member, and the stopper piece of the positioning member is rotated by the guide member when the cutting head moves for cutting. Since it can be automatically rotated to the reset state where it is evacuated from the loading path, switching between the set state and the reset state of the stopper piece can be completely automated, saving manpower, and the structure is simple and inexpensive. At the same time, the switching operation can also be ensured.

[Brief explanation of the drawing]

FIG. 1 is a front view showing one embodiment of the material positioning device for a cutting machine of the present invention, FIG. 2 is a sectional view thereof, FIG. 3 is a plan view of a beveling machine to which the material positioning device is applied, and FIG. The figure is a front view thereof, and FIG. 5 is a front view of a conventional material positioning device. 13... Carrying-in path, 16... Cutting head, 21... Cutter cover as a guide member 31... Material positioning device, 32... Positioning member, 35... Stopper piece, 46
...Roller as a contact part, 51...Material. June 1, 1990 Inventor Nobutaka Monguchi

Claims (1)

[Claims] (1) In a material positioning device for a cutting machine in which a cutting head moves in a direction perpendicular to the direction in which the material is carried in and performs cutting on the material, the cutting head is placed on the side of the material carrying path in the direction of movement of the cutting head. It has a stopper piece that is rotatably supported on the shaft, and that is rotatably biased into a set state where it enters the carry-in passage due to the relation of the center of gravity, and that the end face of the material brought into the carry-in passage abuts to position the material. , a positioning member having an abutting portion on the stopper piece; and a positioning member provided on the cutting head, which abuts the abutting portion of the positioning member during cutting movement of the cutting head so that the stopper piece retracts from the carry-in path. A material positioning device for a cutting machine, comprising: a guide member for rotating the material to a reset state.