JP2664610B2 - Long material processing apparatus and processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long material processing apparatus and a long material processing method, and more particularly, to an accurate material feeding method for performing processing such as cutting and drilling on a long material such as a shaped steel. The present invention relates to a long material processing apparatus and a processing method capable of performing the following.

[0002]

2. Description of the Related Art Conventionally, in a long material processing apparatus and a long material processing method, in order to feed a long work by a predetermined length, it is required to securely hold the work.

For this reason, the pusher presses the work against the vertical roller on the reference side, thereby preventing the work from moving in the horizontal direction during material feeding and setting the position of the work. In this state, the rear end of the work is clamped by the work clamper, and the work clamper is moved to accurately feed the material.

[0004] That is, the length of the work to be fed in this way is measured in advance by an operator and input as data. It is cut.

[0005]

However, such a conventional technique has the following problems.
That is, since the vertical roller that presses the work to the reference roller is rotatable, if there is a burr at the rear end of the work or if the rear end hangs down, the tip of the work clamper However, there is a possibility that the workpiece abuts on the workpiece and prevents accurate clamping, or the workpiece clamper pushes the workpiece forward. If the work is lightweight, the spring of the limit switch mounted on the tip of the work clamper may win and push the work forward before the limit switch is turned on. Therefore, there is a problem that the work efficiency is deteriorated because the worker must monitor the work when clamping the work.

Further, after the processing is completed, when the residual material is brought back, there is a possibility that the residual material abuts on the vertical roller on the reference side to prevent retreat.

Furthermore, in the conventional long material processing apparatus and processing method, since there is no length measuring function for measuring the length of the work, the operator measures the length of the work when performing the automatic operation, and the value is measured. Must be input as the processing data. Alternatively, since the length of the work cannot be recognized, the leading end of the work must be cut off once before processing the product, resulting in a useless portion. For this reason, it is necessary to use a work considerably longer than the total of the product lengths, and there is a problem that the production efficiency is deteriorated.

When a long work is cut by a cutting press machine, the work is drawn into the clearance as the movable blade is lowered, and the work is stretched. . In such a case, if the movable blade is forcibly raised, there is a problem that the movable blade is damaged or worn because the end face of the work rubs the movable blade. Further, a frictional force acts between the movable blade and the work, which hinders downsizing of the driving device.

SUMMARY OF THE INVENTION An object of the present invention is to pay attention to such a conventional technique, and to measure the length of a long material automatically, appropriately clamp the material, and accurately feed the material. It is an object of the present invention to provide a long material processing apparatus and a processing method capable of extending the life of a long material.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, a long material processing apparatus and method according to the present invention include: a work table for loading and carrying a long material; A long material processing machine which is provided adjacently and performs various kinds of processing, and a work clamper which clamps the work to load and unload the work into and out of the long material processing machine and which runs by a drive motor by itself. A material processing apparatus, wherein a plurality of reference rollers are provided at a predetermined interval on one end side in the width direction of the work table, and a side clamper provided with a pusher that can freely approach and separate from the reference roller is provided on the other end side at a predetermined interval. And a pusher of at least the side clamper of the side clamper closest to the long material processing machine is made non-rotatable.

In addition, a reference block for positioning the work at a reference position is provided at a portion of the work table near the long material processing machine so as to be able to protrude and retract with respect to the work table. It is preferable that a position detection device is provided in the drive motor to automatically measure the length of W.

Further, the work clamper is provided with a work detecting sensor for detecting the rear end of the work so as to move the work clamper at a high speed from the rear end of the work to a predetermined distance, and to move at a low speed when the work clamper approaches a predetermined distance or more. It is desirable that the clamp be provided at the distal end or the clamp provided at the distal end of the work clamper be rotatable in the vertical and horizontal directions.

In cutting the work by the cooperation of the fixed blade and the movable blade of the cutting press, the movable blade is moved to the fixed blade side to cut the work, and then the work clamper is pulled back by a predetermined amount to cut the cut end of the work. The movable blade is separated from the movable blade, and then the movable blade is separated from the fixed blade. To this end, a movable blade detection sensor is provided at the limit position of the movable blade at the time of cutting, and a control unit that controls a drive motor to retract the work clamper by a predetermined amount when the movable blade detection sensor detects the movable blade is provided. Is desirable.

[0014]

According to the apparatus and method for processing a long material according to the present invention, various long material processing machines are provided adjacent to one end of a work table on which a long steel, for example, a shaped steel is placed and carried. Therefore, for example, a series of processing such as drilling and cutting of a flange and a web of a shape steel can be continuously performed, and the working efficiency is improved. Further, the pusher of the side clamper presses the work against the reference roller provided at a predetermined interval on one end side in the width direction of the work table, so that the work can be placed along the reference roller. Here, at least the pusher of the side clamper located closest to the long material processing machine among the side clampers is made non-rotating, so that when the workpiece is clamped, the workpiece is prevented from escaping in the loading direction and clamped securely. can do.

In addition, a reference block for positioning a work at a reference position is provided so as to be able to protrude and retract from the work table, and a position detection device is provided for a drive motor for self-propelling the work clamper. The length of the work can be automatically measured based on the positional relationship. Since the reference block can be stored and retracted in the work table, it does not become an obstacle when carrying in the work.

Further, in clamping the work,
The work clamper moves at high speed until the work detection sensor provided at the tip of the work clamper detects the rear end of the work, and then moves at low speed, so even if there is a large difference in the length of the work, the work clamper moves quickly. Can be done.

Furthermore, since the clamp portion provided at the tip of the work clamper is rotatable in the vertical direction, even if the rear end of the work is deformed or has burrs, it can be securely clamped. it can.

In cutting the work by the cooperation of the fixed blade and the movable blade of the cutting press, the movable blade is moved to the fixed blade side to cut the work. When the blade detection sensor detects, the control unit controls the drive motor to pull back the work clamper by a predetermined amount.

Further, when the work clamper holding the scrap is pulled back after all the processing is completed, the clamp portion provided at the tip of the work clamper is rotatable in the left-right direction. Can move without hitting the reference roller.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the whole long material processing apparatus 1. In this long material processing apparatus 1, a long material work W
A long work table 3 for carrying in the work is provided extending in the left-right direction in the drawing, and various long material processing machines 5 are provided at the right end of the work table 3 in the drawing. The long material processing machine 5 includes flange piercing presses 7 and 9 for punching a flange of a workpiece W which is a shaped steel, a marking press 11, and a web piercing press 13 for punching a web of the workpiece W. A cutting press 15 for cutting the work W; Here, flange piercing press 7, 9, marking press 11, web piercing press 1
3. Since the cutting press 15 is commonly used, detailed description is omitted.

In the vicinity of the left end of the work table 3, there is provided a remaining material conveyor 17 for carrying out the remaining material of the cut work W. In addition, near the left end of the work table 3 and in front of the long material processing machine 5 (left side in the figure),
A work stopper 19 as a reference block which can move up and down is provided so as to be vertically movable by a driving device (not shown). The work stopper 19 projects upward from the work table 3 when the work W is set, so that the work W is set at a predetermined position. However, when the work W is carried in, the work stopper 19 is lowered so as not to contact the work W. . Further, the position of the work stopper 19 is given as data to the control unit CTL (see FIG. 13).

A plurality of rollers 21 are rotatably provided in a horizontal plane at a portion where the work W is placed on the work table 3, and support the work W so as to be able to be conveyed in a loading direction (right direction in the drawing). It has become. And
A plurality of work lifters 23 are provided between the rollers 21 at predetermined intervals.

In the vicinity of the lower end of the roller 21 in the figure, a number of reference rollers 25 serving as a reference for the placement position of the work W are provided at predetermined intervals so as to be rotatable in a vertical plane. A plurality of side clampers 27 are provided at predetermined intervals to press the work W against the reference roller 25.

Referring to FIG. 2, a side clamp cylinder 29, such as a hydraulic cylinder, is provided in a direction (vertical direction in the figure) perpendicular to the carrying-in direction, and a roller 21 is attached to a piston rod 31 of the side clamp cylinder 29.
A pusher 33 protruding upward from the upper surface of is mounted. Therefore, the pusher 33 can be moved downward in the figure by the side clamp cylinder 29 when necessary, and can push the work W against the reference roller 25 when setting the work W.

The pusher 3 of the side clamper 27 disposed at least on the front side (right side in the drawing) in the loading direction.
Numeral 3 is fixed using a material such as rubber so as not to rotate, so that the work W can be prevented from moving in the carry-in direction while the work W is pressed against the reference roller 25. The pusher 33 is not limited to a circular cross section, but may be a polygon. The other pushers 33 have a circular cross section and are rotatably supported.

When the work W is set, the pusher 33 is set to the reference roller 25 when the work W is set.
While the workpiece W is moved to the side and the workpiece W is fixed, the rear end of the workpiece W is clamped by the workpiece clamper 35 described later. When the clamp is completed, only the side clamper 27 equipped with the non-rotating pusher 33 is retracted upward in the drawing, and then the work W is carried in. At this time, the side clamper 27 to which the rotating pusher 33 is attached is kept at a position where it abuts the work W, and prevents the work W from moving in the lateral direction at the time of loading.

Returning to FIG. 1, a carriage 37 is provided along the work table 3 in the upper part of the figure. The carriage 37 is provided with a rack 39 and two guide rails 41, 41 in parallel.

Referring to FIGS. 3 to 5, a linear motion guide 43 slidable along a guide rail 41 is attached to a work clamper 35 via a base plate 45. A clamp base plate 47 and a motor base plate 49 are provided. The motor base plate 49 is provided with a motor 53 as a drive motor on which a pinion 51 that meshes with the rack 39 is mounted. An encoder 55 as a position detecting device is mounted on the servo motor 53. The servo motor 53 and the encoder 55 are connected to the control unit CTL (see FIG. 13).
Accordingly, the work clamper 35 is driven by the servo motor 53 controlled by the control unit CTL.
, And the position of the work clamper 35 is detected from the rotation of the servo motor 53.

A vertical shaft 57 is provided downward from the clamp base plate 47, and a shoulder 59 is provided on the vertical shaft 57 so as to be rotatable in the left-right direction (A direction in FIG. 3). 6 to 8, an offset cylinder 61 is provided on the clamp base plate 47, and the shoulder 59 is rotated by the offset cylinder 61.

Referring again to FIGS. 3 to 5, a clamp arm 63 is provided below the shoulder 59 so as to be rotatable up and down around a horizontal shaft 65 as a fulcrum. A vertical cylinder 67 is provided on the left side of the shoulder 59 in the figure, and the clamp arm 63 is moved in the vertical direction (FIG. 4).
(In the direction of middle B). A clamp 69 for directly clamping the work W is attached to the tip of the clamp arm 63, and a clamp cylinder 71 for operating the clamp 69 is provided at the rear end.

That is, the piston rod 73 of the clamping cylinder 71 is connected to the vicinity of the upper end of a rod 77 that rotates in a vertical plane about the pin 75 by a pin 79, and the lower end of the rod 77 is connected to a clamp arm. 63 is connected to the rear end.

With the above configuration, the clamp arm 63 is rotatable in the left-right direction and the up-down direction, so that the clamp can be securely clamped even when the rear end of the work W is deformed or has burrs. Can be.

Referring to FIGS. 9 and 10, an actuator 83 having a dog rod 81 attached to the tip thereof is mounted on the clamp portion 69. The actuator 83 reduces the traveling speed of the work clamper 35. A deceleration position detection sensor 85 for detecting a position is attached and connected to the control unit CTL (see FIG. 13). A work detection sensor 87 is provided above the dog rod 81, and is connected to the control unit CTL (see FIG. 13). The outer periphery of the dog rod 81 is threaded.
A dog 89 is provided for abutment to actuate 7.

A dog stay 91 is provided at the tip of the dog rod 81.
A linear motion guide 95 slidable along a guide 93 is provided above the dog stay 91. A dog 97 for detecting the rear end of the work W for detecting the rear end of the work W is attached to the front end of the dog stay 91.

A clamp piece 101 that rotates about a pin 99 is provided at the tip of the clamp portion 69. A lower end of the clamp piece 101 is connected to a clamp rod 105 by a pin 103, and an upper end of the clamp piece 101 is provided with an upper jaw that can freely move toward and away from a lower jaw 107, which is a lower end of the clamp 69. A plate 109 is rotatably provided by a pin 111. 3 and 4, the rear end of the clamp rod 105 is connected to the clamping cylinder 71 via the rod 77 as described above.

Next, a series of operations from clamping of the work W to processing of the work W and collection of the scrap after the processing will be described.

First, the work stopper 19 is raised above the roller 21 and the work W
Roller 21 of the work table 3 so that the tip of
The work W is placed on the top (see FIG. 1). The pusher 33 of the side clamper 27 is moved toward the reference roller 25 by the side clamp cylinder 29 to fix the work W so as not to move in the loading direction (see FIG. 2), and the work stopper 19 is lowered. Thus, the work W can be set at the reference position and the work W can be prevented from escaping in the loading direction when the rear end of the work W is clamped by the work clamper 35.

Subsequently, the actuator 83 is operated to push out the dog stay 91, and push out the dog 97 for detecting the rear end of the work to the position shown by the two-dot chain line in FIG. At this time,
The deceleration position detection sensor 85 provided in the actuator 83 is turned on.

The servo motor 53 is operated at a high speed in response to an ON signal from the deceleration position detecting sensor 85, and
Move 5 forward at high speed. When the dog 97 for detecting the rear end of the work comes into contact with the rear end of the work W and is pushed into the clamp 69, the piston rod 8 of the actuator 83 is moved through the dog stay 91 and the dog rod 81.
3a is moved to the left in the figure, and the deceleration position detection sensor 85 is turned off.

At this time, the dog stay 91 is connected to the linear motion guide 43.
Can be moved smoothly because it is guided straight. If the actuator 83 is in a no-load state, the entire work clamper 35 does not move due to the movement of the piston rod 83a.

Upon receiving the OFF signal from the deceleration position detection sensor 85, the rotation of the servo motor 53 is reduced, and the work clamper 35 is switched to low-speed movement. That is, since the work rear end detection dog 97 moves at a high speed before reaching the rear end of the work W, the movement time is shortened.

Further, since the dog stay 91 moves to the left in the figure with the low-speed movement of the work clamper 35 (moves from the state of the two-dot chain line to the state of the solid line in FIG. 10), the dog 89 is moved.
Contacts the work detection sensor 87 to turn on the work detection sensor 87. Since the work clamper 35 moves to the position where the work W is clamped by this low-speed movement, the clamp operation can be performed accurately, and the work clamper 35 does not collide with the work W and is not damaged.

The encoder 55 of the servomotor 53
Since the distance from the origin position of the work clamper 35 to this position is detected, the length of the work W is automatically measured from the relationship with the position of the work stopper 19.

Subsequently, the clamp rod 105 is moved leftward in FIG. 10 by the clamp cylinder 71, and the clamp piece 101 is rotated clockwise in FIG. 10 around the pin 99, so that the upper jaw plate 109 and the lower jaw 1
07, the rear end of the work W is clamped.

Referring to FIG. 11, if the rear end of the work W is deformed or burrs are generated, the clamp 69
Since the upper jaw plate 109 or the lower jaw 107 of the clamp abuts on the rear end of the work W, there is a possibility that this position may be erroneously recognized as the position for performing the work clamp and the work may not be reliably clamped. For example, when the rear end of the work W is deformed downward as shown in FIG. 11, the upper and lower cylinders 67 are operated upward to move the front end of the clamp arm 63 downward so that the work W is moved downward. Can be reliably clamped.

The workpiece W thus clamped is fed a predetermined length, and a hole is punched or cut at a predetermined position. Referring to FIG. 12, the cutting press 15 has an upper blade 113 that is a movable blade and a lower blade 115 that is a fixed blade. The control unit CTL is located at a position where the upper blade 113 descends and cutting is completed. Is provided with a lower limit sensor 117 connected to. Therefore, when the lower limit sensor 117 detects the upper blade 113, it recognizes that the cutting has been completed and issues a signal to the control unit CTL.

As shown in FIG. 13, when the control unit CTL receives a signal from the lower limit sensor 117, it operates the servo motor 53 of the work clamper 35 to move the work clamper 35 by a predetermined amount (shaded in FIG. 12). (Shown), and the cut edge of the work W is controlled to be separated from the upper blade 113. Then, the upper blade 113 is raised in a state where the thrust force has been eliminated to prepare for the next processing.

When the machining is completed, the work clamper 3
5, the work clamper 35 is pulled back in the direction of the origin (to the left in FIG. 1) to collect the scrap clamped at 5,
The scrap is collected by the scrap conveyor 17 (see FIG. 1).

Here, referring to FIGS. 6 to 8, if the rear end of the work W is deformed or has burrs, the scrap W may hit the reference roller 25 when the scrap is moved, which may hinder the movement. This may damage the reference roller 25 or adversely affect the work clamper 35, the servomotor 53, and the like. For this reason, by operating the offset cylinder 61 and rotating the shoulder 59, the tip of the clamp arm 63 is brought into contact with the anti-reference roller 25.
To the side (upper side in FIG. 7). Thereby, the work W
The rear end of the reference roller 25 is separated from the reference roller 25.
Can be moved without contacting the

As described above, the pusher 33 of the side clamper 27 presses the workpiece W against the reference roller 25 to prevent the workpiece W from moving in the loading direction. Can automatically and reliably clamp the work W without holding it down by hand.

The control unit CTL controls the work clamper 35 to move at a high speed at first, and to move at a low speed from the position where the rear end of the work W is detected.
Even when the length of the workpiece W changes (for example, 2 m to 12 m), the time required for the workpiece clamper 35 to move before the workpiece W is clamped can be shortened, so that the working efficiency is improved. Further, it is possible to prevent the reference position of the work W from being shifted due to the collision of the work clamper 35 with the rear end of the work W in the state of high-speed movement, so that accurate length measurement can be performed. At the same time, it is possible to prevent the sudden stop of the work clamper 35 from adversely affecting the moving mechanism.

Further, since the clamp arm 63 of the work clamper 35 can be moved up and down, the work W can be securely clamped even if the rear end of the work W is deformed or burrs are generated. Can be.

After cutting by the cutting press 15, the control unit CTL controls the work W to be pulled back once and lifted the upper blade 113 in a state of being separated from the upper blade 113, so that the upper blade 113 may be damaged. Therefore, it is possible to prevent an excessive force from acting on the mechanism for raising the upper blade 113.

Further, since the clamp arm 63 of the work clamper 35 can be moved in the left-right direction, the work W
Even if the rear end is deformed or has burrs, it can be collected without hitting the reference roller 25.

It should be noted that the present invention is not limited to the above embodiment, but can be implemented with appropriate modifications. For example, in the above-described embodiment, the work stopper 19 for setting the reference position of the work W by bringing the tip of the work W into contact.
However, instead of this, the side damper 27 and the work clamper 35 may be controlled using a sensor that detects the tip of the work W.

[0057]

The long material processing apparatus and the processing method according to the present invention are configured as described above. Since the pusher of the side clamper presses the work against the reference roller, the work is moved along the reference roller. Can be placed. Here, at least the pusher of the side clamper located closest to the long material processing machine among the side clampers is made non-rotating, so that when the workpiece is clamped, the workpiece is prevented from escaping in the loading direction and clamped securely. can do.

Further, since the reference block is provided so as to be able to freely move in and out of the work table, and the drive motor for allowing the work clamper to run on its own is provided with a position detecting device. Automatic length measurement is possible. Since the reference block can freely move in and out of the work table, it does not become a hindrance when carrying in the work.

Further, in clamping the work,
The work clamper moves at high speed until the work detection sensor provided at the tip of the work clamper detects the rear end of the work, and then moves at low speed, so even if there is a large difference in the length of the work, the work clamper moves quickly. Can be done.

Further, since the clamp portion provided at the tip of the work clamper is rotatable in the vertical and horizontal directions, the rear end of the work may be deformed.
Even if burrs are generated, it is possible to securely clamp.

When the work is cut by the cooperation of the fixed blade and the movable blade of the cutting press, the movable blade is moved to the fixed blade side to cut the work. When the blade detecting sensor detects, the control unit controls the servomotor to pull back the work clamper by a predetermined amount. Therefore, the cut edge of the work is separated from the movable blade, and it is possible to prevent the movable blade from being damaged when returning the movable blade, and to prevent an excessive force from acting on the drive system for returning the movable blade.

[Brief description of the drawings]

FIG. 1 is an overall plan view showing an embodiment of a long section steel working apparatus according to the present invention.

FIG. 2 is an enlarged detailed view of a portion II in FIG.

FIG. 3 is a plan view showing a work clamper.

FIG. 4 is a front view as viewed from an IV direction in FIG. 3;

FIG. 5 is a side view as viewed from a direction V in FIG. 3;

FIG. 6 is an explanatory view showing a mounting portion of a clamp arm.

FIG. 7 is an explanatory view showing a state where a clamp arm is offset.

FIG. 8 is a sectional view taken along line VIII-VIII in FIG.

FIG. 9 is a cross-sectional view illustrating a structure of a clamp unit.

FIG. 10 is a sectional view taken along line XX in FIG. 9;

FIG. 11 is an explanatory view showing a state where the clamp arm is rotated downward.

FIG. 12 is an explanatory view showing a processing state of a cutting press.

FIG. 13 is a block diagram showing a control system of the long material processing apparatus according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 long material processing device 3 work table 5 long material processing machine 15 cutting press 19 work stopper (reference block) 25 reference roller 27 side clamper 33 pusher 35 work clamper 53 servo motor (drive motor) 55 encoder (position detection device) 69 Clamping part 87 Workpiece detection sensor 113 Upper blade (movable blade) 115 Lower blade (fixed blade) 117 Lower limit sensor (movable blade detection sensor) W Workpiece (shape steel) CTL controller

Claims (6)

(57) [Claims] 1. A work table on which a long material is placed and carried, a long material processing machine provided adjacent to one end of the work table for performing various kinds of processing, and a work is mounted on the long material processing machine. A work clamper that clamps a work to be carried in and out and that is self-propelled by a drive motor, wherein a plurality of reference rollers are provided at predetermined intervals on one end side in the width direction of the work table. On the other end side, a plurality of side clampers each having a pusher that can approach and separate from the reference roller are provided at predetermined intervals, and at least the side clamper pusher of the side clamper closest to the long material processing machine is not rotated. A long material processing apparatus characterized in that it is of a type. 2. A work table, wherein a reference block for positioning a work at a reference position is provided at a portion close to a long material processing machine so as to be able to protrude and retract from the work table. 2. The long material processing apparatus according to claim 1, wherein a position detecting device is provided on the drive motor to automatically measure the length of W. 3. A work detecting sensor for detecting a rear end of a work to move the work clamper at a high speed from a rear end of the work to a predetermined distance and to move the work clamper at a low speed when the work clamper approaches a predetermined distance or more. 2. The long material processing apparatus according to claim 1, wherein the apparatus is provided at a tip end. 4. The long material processing apparatus according to claim 1, wherein a clamp portion provided at a tip of the work clamper is rotatably provided in a vertical direction and a horizontal direction. 5. A cutting press for cutting a workpiece by cooperation of a fixed blade and a movable blade, wherein a detection sensor for the movable blade is provided at a limit position of movement of the movable blade during cutting, and the detection sensor for the movable blade is a movable blade. 2. The long material processing apparatus according to claim 1, further comprising a control unit that controls the drive motor so as to pull back the work clamper by a predetermined amount when the detection is made. 6. In cutting a work by the cooperation of a fixed blade and a movable blade of a cutting press, the movable blade is moved to the fixed blade side to cut the work, and then the work clamper is pulled back by a predetermined amount to cut the cut end of the work. A method for processing a long material, comprising detaching a movable blade from a movable blade and then detaching the movable blade from a fixed blade.