JP3454668B2 - Shape steel cutting device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die set device for a running cutting device disposed downstream of a molding machine in a continuous production line for channel steel, H-section steel, etc. Technology.

[0002]

2. Description of the Related Art Conventionally, there has been known a running cutting device which is arranged on the downstream side of a molding machine in a continuous manufacturing line for shaped steel such as C-shaped steel, grooved steel and H-shaped steel. The running distance cutting device,
The die set runs and cuts in synchronization with the feed of the manufactured shaped steel.This die set inserts the shaped steel between the fixed blade and the moving blade and hits the moving blade with a hammer etc. It was slid and slid to cut between the fixed blade and the moving blade by shearing. When this shearing is completed, it is returned to its original position by an elastic body such as a spring, the die set also travels in the opposite direction and returns to its original position, and the cutting is completed.

In the technique for cutting the shaped steel as described above, the opening size and shape of the hole are provided so that the product (shaped steel) can be smoothly passed through the fixed blade and the moving blade without being caught. Inevitably, the size of the product cross section must be a size with a large opening with a margin of several mm. The larger the margin size, the easier the product leading end work and the continuous running in the middle of the product go. However, during the shearing work, the moving material travels in the fixed blade with a margin, and the moving material first presses the moving blade in the moving direction to make the gap zero, and then the moving blade bites into the product material and enters the shearing process. When the product material shakes, the sheared surface may be flawed or the cutting blade may be damaged if the clearance is large in the shearing process. In order to solve this problem, a technique of arranging a guide roller on the outer side of the cutting blade is known. For example, the technique disclosed in JP-A-6-155146.

[0004]

However, the above-mentioned technique is such that the delivery side of the shaped steel from the molding machine is guided, the delivery side is free, and the shaped steel has a through hole for the cutting blade. If the fixed blade has a large gap so that it can easily pass through, the material will dance in the gap and it will be difficult for the entire cross section to enter the shearing operation at the same time. That is, the moving blade bites only in a certain portion of the material, and there is a portion that is not yet restrained in the other portion. Although shearing further progresses from this state and the product is completely cut, the cross-sectional shape is distorted, and the product is shipped as a product with poor shape quality of the cut surface. Therefore, the present invention provides a sufficient gap between the fixed blade and the movable blade and the material during the passage of the material, and the gap becomes zero immediately before the shearing operation is started, and both sides of the movable blade are pressed. It is intended to provide a technique for increasing the dimensional accuracy.

[0005]

The problems to be solved by the present invention are as described above, and in order to solve the problems, they are configured as follows. According to claim 1, in the shaped steel cutting machine, wherein the fixed blade and the moving blade are respectively provided with through holes corresponding to the cross-sectional shape of the shaped steel, and the running blade is cut in synchronization with the production speed of the shaped steel, the moving blade. Is fixed to the movable blade holder, and the movable blade holder is configured in a parallelogram shape, the slopes on both sides are guided by both sides of the holder base, and the movable blade slides diagonally downward with the upper and lower sides of the movable blade holder. The movable blade holder is provided with a clamper, and the clamper comes into contact with and presses the side surface of the shaped steel at the time of cutting. In the second aspect, the fixed blade and the movable blade are respectively provided with through holes that match the cross-sectional shape of the shaped steel,
In a shaped steel cutting machine that travels and cuts in synchronization with a shaped steel production speed, the fixed blade is composed of a main fixed blade and a divided fixed blade, and the divided fixed blade is slid in a direction perpendicular to the shaped steel. It is movable, and an elastic body urges the split fixed blade and the main fixed blade in an opening direction, and a hammer 7 is used to move the blade for the movable blade.
Head 26c and hit the top edge of the divided fixed blade head 21, which is constituted so as to cut by moving in a direction for pressing the moving blade and the split fixed blade at the same time. In a third aspect of the present invention, there is provided a shaped steel cutting machine for cutting through a fixed blade and a moving blade, each of which has a through-hole corresponding to the cross-sectional shape of the shaped steel, and which travels and cuts in synchronization with a production speed of the shaped steel. A clamper composed of a main fixed blade and a split fixed blade, which allows the split fixed blade to slide to press the shaped steel and also allows the shaped steel to be pressed to the side opposite to the fixed blade with respect to the movable blade. Is arranged so that the shaped steel is pressed by the left and right sides of the movable blade with respect to the horizontal direction in which the shaped steel is fed at the time of cutting.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described. FIG. 1 is an overall front view of a running cutting device of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a side view of the same, FIG. 4 is a front view of a shaped steel cutting device, and FIG. 6 is a front sectional view of a die set of a shaped steel cutting device, FIG. 7 is a sectional view taken along the line XX in FIG. 6, FIG. 8 is a side view of a movable blade, and FIG. 9 is a sectional view taken along the line YY in FIG. A sectional view and FIG. 10 are sectional views of the same clamp.

Next, the overall structure will be described with reference to FIGS. 1, 2 and 3. A shaped steel manufacturing device (not shown) is arranged on the right side of the drawing sheet of FIG. 1, and a running cutting device A is arranged on the extension of the shaped steel outlet. A product delivery device (not shown) is arranged to take out the shaped steel 1. The shaped steel 1 is an H-shaped steel, a C-shaped steel, a grooved steel, or the like. In this embodiment, an example of cutting the C-shaped steel will be described.

In the running distance cutting device A, the traveling rails 3 and 3 are arranged on the base 2 in the front-rear direction in the left-right direction, and the die set lower plate 4 is placed on the traveling rails 3 and 3 so as to be able to travel left and right. Then, the die set device B is arranged on the die set lower plate 4. A rack 5 is horizontally fixed to the lower center of the die set lower plate 4 in the front-rear direction, a die set drive motor M1 is disposed on the right side of the base 2, and a pinion is provided on an output shaft of the die set drive motor M1. Is fixed, meshes with the rack 5, and drives the die set drive motor M1 in the forward and reverse directions to move the rack 5 left and right to reciprocate the die set device B left and right. Press motors M2 and M2 are arranged on the rear part of the base 2, and the output shafts of the press motors M2 and M2 are connected to a crank shaft via a speed reducer 6, and a hammer 7 is connected to the crank shaft. ing. The hammer 7 is arranged so as to be able to come into contact with the upper end surfaces of the split fixed blade head 21 and the movable blade head 26c of the die set device B described later. The die set driving motor M1, the press motor M2, the length measuring device for the shaped steel 1 and the product dispensing device are connected to and controlled by a controller.

As shown in FIGS. 4 and 5, the die set device B has columns 10 on the four corners of the die set lower plate 4.
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10 ... A horizontal frame 11 is laid horizontally on the upper end, the hammer 7 is fixed to the lower center of the horizontal frame 11, and the upper surface of the hammer 7 is interlocked with the crankshaft so that it can be moved up and down. There is. Die set clamps 12 and 1 are provided on both left and right sides of the lower plate 4 of the die set.
2 are arranged to fix the holder base 13 of the die set. Reference numeral 9 is a roller for guiding the shaped steel 1 provided on the payout side of the die set device B.

A plurality of die sets, in this embodiment, three shaped steels 1 can be cut at the same time, but the number is not limited. As shown in FIGS. 6 to 9, a holder 14 is fixed on the holder base 13 by bolts or the like, and a fixed blade and a movable blade 1 as cutting blades are attached to the holder 14.
7 is attached, the fixed blade is composed of a main fixed blade 15 and a split fixed blade 16, a through hole 14a is opened in the center of the holder 14 in the left-right direction, and the start end and the end portion of the through hole 14a are outward. An inclined surface is formed so as to spread, and the shaped steel 1
Is guided without getting caught in the die set.

The main fixed blade 15 is fixed to the holder 14, and U-shaped recesses 15a, 15a, 15a are formed in the upper portion thereof, and the recess 15a is formed to be slightly larger according to the size of the shaped steel 1. There is. Then, from above the main fixed blade 15, the convex portions 16a, 16a, 16a of the divided fixed blade 16 are inserted into the concave portions 15a, 15a, 15a, and the convex portions 16a.
16a and 16a have a shape in which the tip (lower end) is adapted to the shaped steel 1 so that the shaped steel 1 is inserted between the main fixed blade 15 and the split fixed blade 16, and the upper base of the convex portion 16a is A predetermined gap is provided according to the width of the recess 15a so that the recess 15a is slidable in the vertical direction (the direction perpendicular to the shaped steel 1).
The distance between the tip of the convex portion 16a and the bottom surface of the concave portion 15a is such that the shaped steel 1 can sufficiently pass therethrough.

.. are projected from the upper portion of the divided fixed blade 16, and the guide pins 19.
The springs 20 and 20 are respectively fitted to the springs 19 and 20, and the upper portions of the springs 20 and 20 are concave portions 21a and 21a formed on the lower surface of the split fixed blade head 21.
, And the split fixed blade 16 is urged downward by the springs 20. In addition, the split fixed blade 16 has through holes 16b, 16b which are stepped in the vertical direction.
... are opened, bolts 22, 22 ... Are slidably inserted into the through holes 16b, 16b, ... And screwed to the split fixed blade head 21. Reference numeral 23 is a lock nut. The divided fixed blades 16 are received by the stepped portions of the through holes 16b, 16b, ... by the bolts 22, 22, ..., and the divided fixed blades 16 are attached to the divided fixed blade head 21 via the springs 20, 20 ,. Are installed at a predetermined interval.

Bolt holes 21b, 21b are vertically opened on both sides of the divided fixed blade head 21, and bolts 24, 24 are vertically slidably inserted into the bolt holes 21b, 21b. 24 disc springs 25 ・ 25 ・ ・
.. is externally fitted and screwed on the holder 14 to urge the divided fixed blade head 21 upward.

When the upper part of the split fixed blade head 21 is hit by the hammer 7, the split fixed blade head 2 is hit.
1 descends and the bolts 22, 22 ...
16b ... Sliding inside, the split fixed blades 16 are pressed downward via the springs 20, 20 ..., and the shaped steel 1 is inserted between the concave portions 15a and the convex portions 16a of the main fixed blade 15. Hold it and fix it. After the cutting, the disc spring 2
Split fixed blade head 21 due to the urging force of 5 ・ 25 ...
The split fixed blade 16 is lifted upward, and the split fixed blade head 2 is driven by the urging force of the springs 20.
The space between 1 and the split fixed blade 16 is expanded.

As shown in FIG. 8, the movable blade 17 is composed of a lower blade 17a having a concave portion and an upper blade 17b inserted into the concave portion. The shaped steel 1 is provided between the lower blade 17a and the upper blade 17b. There is a gap that can be inserted. The lower blade 17a and the upper blade 17
As shown in FIGS. 5 and 6, b is fixed to a movable blade holder 26, and the movable blade holder 26 is formed in a parallelogram shape as shown in FIG.
Are guided and supported on both sides of the holder base 13. In this embodiment, the movable blade 17 is slanted downward and slanted at a right angle to the shaped steel 1 with an inclination of 35 degrees from the vertical plane. And, on the lower surface of the movable blade holder 26, in parallel with the sliding direction, the springs 27, 27, ...
· The upper ends of the springs 27, 27, ... Abut the recesses 14 formed in the holder 14 in parallel with the sliding direction.
It is inserted in b14b ... Moving blade holder 2
A moving blade head 26c is formed on the upper portion of the blade 6.

The movable blade 17 of the movable blade holder 26
A clamper D, which is a main part of the present invention, is arranged on the side of the passage of the shaped steel 1 on the left and right side (discharging side) from the mounting section of. That is, as shown in FIGS. 6 and 9, the clamper D has a shaped steel passage recess 2 formed in the movable blade holder 26.
On the inner surface of 6d, the cylindrical piston case 30 has the bolt 3
The piston case 3 is fixed by 1.31 ...
A hat-shaped piston 32 is housed in 0, an opening is provided in the axial center of the piston case 30, and a part of the piston 32 projects from the piston case 30. A spring 33 is interposed between the piston 32 and the inner surface of the shaped steel passage recess 26d, and the spring 33 urges the piston 32 to project. However, in the clamper D, when the main fixed blade 15 is arranged on the payout side,
It is placed on the supply side of shaped steel. That is, the left-right positional relationship is not limited as long as the movable blade 17 is arranged between the clamper D and the fixed blade. Also, the spring 2
The 0, the disc spring 25, the spring 27, and the spring 33 may be made of an elastic body such as rubber.

The operation of cutting the shaped steel 1 in such a structure will be described. First, the controller sets the cutting length, and when the manufactured shaped steel 1 is sent to the left, the length measuring device (not shown) measures the length from the origin, and at the same time, the die set drive motor M1 is operated. Drive it to accelerate the die set device B to the left and run it,
When reaching the predetermined position of the cutting length, the speed becomes the same as the production speed of the shaped steel 1, and the press motor M2 is driven to lower the hammer 7 to cut the shaped steel 1.

In the cutting operation of the shaped steel 1, the movable blade head 26c and the upper ends of the split fixed blade head 21 are hit by the hammer 7 so that the movable blade holder 26 has the slopes 26a.
6b descends diagonally downward, as shown in FIG.
The piston 32 of the clamper D contacts the side surface of the shaped steel 1 and presses the shaped steel 1 laterally to fix it. continue,
The divided fixed blade head 21 descends, the convex portion 16a of the divided fixed blade 16 hits the shaped steel 1, and the shaped steel 1 is sandwiched and fixed between the divided fixed blade 16 and the main fixed blade 15. Then, in the state where the shaped steel 1 is pressed by the clamper D, the divided fixed blades 16 and the main fixed blade 15, the movable blade 17 arranged at the position between them moves down to cut the shaped steel 1 and the distortion occurs. Instead, it is cut exactly.

When the cutting is completed, the movable blade holder 26 is lifted to its original position by the urging force of the springs 27, 27, ..., The divided fixed blade head 21 is urged by the disc springs 25, 25 ,. Is raised to the original position by the split fixed blade 16 also returns to the original position. And
The die set drive motor M1 is stopped and immediately reversely rotated to run rightward and return to the origin.

[0020]

Since the present invention is constructed as described above, it has the following effects. That is, as in claim 1,
In a shaped steel cutting machine that cuts by moving through in synchronization with the production speed of the product by providing through holes that match the cross-sectional shape of the product on the fixed blade and the moving blade, respectively, install a clamper on the moving blade holder that fixes the moving blade. Since the clamper is provided so as to contact and press the side surface of the shaped steel at the time of cutting, the shaped steel is not pressed and vibrates at the time of cutting, and it is possible to perform cutting at an accurate position and to prevent scratches and catches. Instead, the quality of the product was improved.

Further, the fixed blade is composed of a main fixed blade and a split fixed blade, the split fixed blade is slidable in a direction perpendicular to the shaped steel, and an elastic body opens the split fixed blade. In addition to being urged to move, the movable blade and the split fixed blade are moved in the direction of pressing at the same time so as to cut, so that the shaped steel can be reliably inserted into the through holes formed in the movable blade and the fixed blade. , Move the movable blade and the split fixed blade at the same time, press the shaped steel with the split fixed blade, cut with the movable blade, suppress the vibration at the time of cutting and cut accurately as above to improve the product quality. It was.

The fixed blade is composed of a main fixed blade and a split fixed blade, and the split fixed blade can be slid to press the shaped steel, and the fixed blade is opposite to the movable blade. A clamper that can press the shaped steel is arranged in the position, and the shaped steel is pressed on both sides of the moving blade during cutting, so that the shaped steel can be pressed on both sides of the cutting part, and There was no vibration on the payout side, and the quality of the product was improved by cutting it exactly as described above.

[Brief description of drawings]

FIG. 1 is an overall front view of a running distance cutting device of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is a front view of a shaped steel cutting device.

FIG. 5 is a side view partially sectional view of the same.

FIG. 6 is a front sectional view of a die set of the shaped steel cutting device.

7 is a cross-sectional view taken along the line XX in FIG.

FIG. 8 is a side view of a movable blade.

9 is a cross-sectional view taken along line YY in FIG.

FIG. 10 is a sectional view of the same when clamped.

[Explanation of symbols]

A running distance cutting device D clamper 1 Shaped steel 15 Main fixed blade 16 split fixed blade 17 moving blade 26 Moving blade holder

─────────────────────────────────────────────────── --- Continuation of the front page (56) Reference JP-A-6-328315 (JP, A) JP-A-61-270017 (JP, A) JP-A-6-55287 (JP, A) JP-A-58- 206396 (JP, A) Actual Kaihei 6-71021 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B23D 23/00-25/04

Claims (3)

(57) [Claims] 1. A shaped-steel cutting machine, in which a fixed blade and a movable blade are respectively provided with through-holes matching the cross-sectional shape of the shaped steel, and the traveling blade is cut by traveling in synchronization with the shaped steel production speed, The movable blade holder is fixed to the movable blade holder, and the movable blade holder is formed into a parallelogram shape. The inclined surfaces on both sides are guided by both sides of the holder base, and the movable blade slides diagonally downward with the upper and lower sides of the movable blade holder. The shaped steel cutting device is characterized in that a clamper is provided on the movable blade holder, and the clamper abuts against the side surface of the shaped steel and presses it at the time of cutting. 2. A shaped-steel cutting machine, in which a fixed blade and a movable blade are respectively provided with through-holes matching the cross-sectional shape of shaped steel, and the cutting is performed by cutting in synchronization with the production speed of shaped steel, the fixed blade is mainly used. It consists of a fixed blade and a split fixed blade, and the split fixed blade is slidable in the vertical direction with respect to the shaped steel, and is urged by an elastic body in a direction to open between the split fixed blade and the main fixed blade. as well as, Ha
On the moving blade head and the split fixed blade head
A shaped-steel cutting device characterized in that it is configured so that an end is tapped and the movable blade and the split fixed blade are simultaneously moved in a pressing direction to perform cutting. 3. A shaped steel cutting machine, wherein through holes corresponding to the cross-sectional shape of shaped steel are provided in a fixed blade and a moving blade, respectively, and the shaped blade cutting machine runs and cuts in synchronization with a shaped steel production speed. It is composed of a fixed blade and a split fixed blade, and the split fixed blade can be slid to press the shaped steel, and the movable blade is fixed to the movable blade holder, and the side opposite to the fixed blade of the movable blade holder. Shaped steel cutting characterized by arranging a clamper that can press the shaped steel on the left and right sides of the moving blade to press the shaped steel against the left and right direction where the shaped steel is fed when cutting. apparatus.