JPH0471739A - Method and apparatus for piercing and cutting steel strip - Google Patents

Abstract

PURPOSE:To automatically perform piercing and cutting by closing 1st and 2nd grippers as a steel strip is supported by a table lifter, pitch-feeding a carriage on the entrance side, performing piercing with a punch press and opening the gripper to retreat the carriage. CONSTITUTION:The steel strip A is delivered by a level feeder D, passed through a shear E, fed as supported by a table lifter F and the front end of the steel strip is brought into contact with a stopper. Thereafter, the 1st and 2nd grippers 10, 20 are approached to the steel strip and closed to grip the steel strip. Then, the carriage G is pitch-fed and pierced by a punch press. When the carriage comes at the advancing position, the gripper is opened to retreat the carriage, and the gripper is closed to pitch-feed the carriage. On one hand, drive of the level feeder is controlled, simultaneously the delivered length of the steel strip is measured, when it is equal to the set length, the level feeder is stopped and a shear is operated to cut the steel strip. In this way, the steel strip can be pierced and cut automatically as it is delivered from a coil.

Description

[Detailed description of the invention] A. Industrial application field The present invention relates to a method and apparatus for perforating and cutting a strip.

B. Prior art Conventionally, when manufacturing a container, for example, in order to drill a hole in a 12-meter strip corresponding to the length of the container, the strip was fed out from a strip coil using a level feeder, and then passed through a shear. and sent it off to the press. When the length was determined to be 12 meters by the measuring unit installed on the level feeder, the shear was activated to cut it. After that, several workers carried the cut boards to the stop at the entrance of the press, positioned them, and fed them into the press.

C1 Problem to be Solved by the Invention Therefore, between shearing and pressing, the strip length is at least 1.
A space of 2 meters was required.

A skilled worker had to do the work such as positioning the board one by one.

The present invention solves the above problems and provides a method and apparatus for automatically perforating and cutting the strip as it is unwound from the coil, while minimizing the distance between the shear and the press. purpose.

01 Means for Solving the Problems In order to solve the above problems, the configuration of the present invention is as follows. That is, in the method of the first configuration, the inlet side of the strip feeding section,
Exit When the carriage is in the retracted position and the table lifter is in the raised position, the strip unwound from the strip coil is passed through the level feeder and shear and supported by the table lifter, while the first. The front end of the strip plate is placed between the opening of the second gripper and the stopper provided at the press entrance, and then the first gripper is placed in the opening of the second gripper. The second gripper is closed, the entrance side carriage is pitch-fed and a hole is punched with a punch press, and when the entrance side carriage comes to the forward position, the first and second grippers are opened and the carriage is moved back. and then repeat the step 1 again. The second gripper is closed to cause the carriage to be pitch-fed, and in the same manner, the inlet-side carriage is to be pitch-fed.Meanwhile, when the table lifter is in the lowered position, a strip loop is formed just above it, and the loop is The drive of the level feeder is controlled so that the bottom part is within the set upper and lower limits, and at the same time the length of the strip is measured, and when the length reaches the set length, the level feeder is stopped and the shear is activated. When the entrance side carriage is in the retracted position and the rear end of the strip is in front of it, the first carriage and the first carriage are cut. When the second gripper is deactivated and the exit carriage is in the retracted position, the first gripper on the exit side. Close the second gripper and let it grip the strip,
Thereafter, the exit carriage is pitch-fed, and when the exit carriage reaches the forward position, the exit carriage is moved in pitch. The second gripper is opened to retract the exit carriage, and the loop conveyor is operated to send the trailing end portion of the strip out of the exit side feeding section.

The device of the second configuration includes a level feeder, a strip length measuring means that calculates from the rotational speed of a length measuring roller that rolls in contact with the moving strip, and a strip length measuring means that calculates the length of the strip from the rotation speed of the strip length measuring roller that rolls in contact with the moving strip, and the lowermost part of the strip loop reaches the set upper and lower limit values. When the pitch is between the two, the level feeder is driven, and when the bottom of the strip loop becomes higher than the set upper limit, the pitch feed of the strip is stopped and the level feeder is driven.
If the bottom of the strip loop falls below the set lower limit,
A loop control section that stops the level feeder,
a shear installed in front of the level feeder in the strip feeding direction; a table lifter installed in front of the shear; and an inlet side feeding section installed in front of the lifter;
The punch press includes a punch press installed in front of the punch press, and an outlet side feed section installed in front of the punch press, and the inlet side feed section supports a horizontally extended elongated strip and extends along its length. In order to feed the strip, there are a plurality of inlet side strip holders parallel to each other extending parallel to the strip feeding direction, and a plurality of entrance side rails installed below these strip holders and parallel to the strip feeding direction. , an entrance side carriage mounted on the rail so as to be able to reciprocate, an entrance side reciprocating means for reciprocating the carriage, and left and right sides of the strip plate installed on the carriage and supported by the strip plate support. The exit side feeding section includes an entrance side first gripper and an entrance side second gripper that hold the vicinity of the end, and the exit side feeding section includes an exit side band temporary support similar to the entrance side feeding section, an exit side rail, and an exit carriage. and an exit side reciprocating means, a first exit side gripper, an exit side second gripper, and a loop conveyor installed between the exit side band temporary supports.

In addition to the second configuration, the apparatus of the third configuration includes a third gripper on the entrance side carriage for holding the rear end of the short plate, and a third gripper on the exit carriage for holding the front end of the short plate. The grippers are each provided so as to be movable up and down.

E8 action When the carriage at the entrance and exit of the strip feed section is in the retreat position and the table lifter is in the raised position, the strip is fed out from the strip coil by the level feeder, passed through the shear, and supported by the table lifter. Feed the strip, and the front end of the strip hits the stopper provided at the press entrance. After that, the above-mentioned 1.
The second gripper is brought close to the strip plate and closed to grip the strip plate.Next, the entrance side reciprocating carriage is pitch-fed to punch holes with a punch press. When the entrance side carriage comes to the forward position, the first. The second gripper is opened to retract the carriage, and the first gripper is retracted. The second gripper is closed to cause the carriage to move in pitch. Thereafter, pitch feed is performed using the entrance side carriage in the same manner.

On the other hand, when the table lifter is in the lowered position, a strip loop is formed directly above it, and the drive of the level feeder is controlled so that the bottom of the loop is within the set upper and lower limit values, and at the same time the strip is fed out. The length is measured, and when the set length is reached, the level feeder is stopped and the shear is activated to cut the strip.

When the entrance side carriage is in the retracted position and the rear end of the strip is in front of it, the carriage and the first carriage are in the retracted position. Stop the operation of the second gripper. Then, with the exit carriage in the retracted position, the first and second grippers on the exit side are closed to grip the strip plate, and then the exit carriage is pitch-fed. The exit of the carriage is the forward value! When I came to the exit, I found the first one on the exit side.
The second gripper is opened to retract the exit carriage, and the loop conveyor is operated to send the trailing end portion of the strip out of the exit side feeding section.

Next, when sending the rectangular short plates to drill holes, the plurality of short plates stacked on the table lifter are sequentially transferred from the top to the entrance side band plate receiver by the operator. At this time, the third gripper is lowered below the upper surface of the strip support and is in the retracted position. Then, the short plate whose rear end is gripped by the third gripper is pitch-fed by the feeding means and punched by a press. Next, when the third gripper on the entrance side reaches the forward position, the short plate is released, and the third gripper on the exit side, which is in the retreat position, grips the front end of the short plate and feeds the short plate in pitch. When the third gripper on the exit side reaches the forward position, it releases the short plate and descends, retracting the underside of the short plate. At the same time, the conveyor operates and sends out the short plate.

F. Example Hereinafter, embodiments of the present invention will be explained based on an example shown in the drawings.

In Fig. 1, a strip A is unwound from a strip coil B loaded in an uncoiler C, passes through a level feeder D, a shear E, and then passes above a table lifter F in a space forming a loop. , is fed by the inlet side feed section G, reaches the punch press P, and is sent out through the outlet side feed section H.

The level feeder D is provided with a well-known strip length measuring means that calculates the length from the rotation speed of a length measuring roller J that rolls in contact with the moving strip A. Also, when the bottom of the strip loop L is between the set upper and lower limits, the level feeder D is driven, and when the bottom of the strip loop L is higher than the set upper limit, the pitch of the strip A is fed. A well-known loop control section (not shown) is provided that stops the level feeder D and drives the level feeder D, and stops the level feeder D when the lowest part of the strip loop L becomes lower than the set lower limit value. Three pairs of well-known light emitters and receivers (not shown) are provided so that the light beam horizontally crosses the loop at three points corresponding to the upper, middle, and lower limits of the lowest position of the loop.

In Fig. 2.3, in the inlet side feeding section G, the pedestal 1a
The erected strip support 2a supports a horizontally extended long strip, and has a plurality of mutually parallel beams extending parallel to the strip feeding direction so as to feed the strip along its length. A large number of freely rotating rollers are arranged in parallel at equal intervals in the length direction on the upper surface of the roller.

Two rails 3a parallel to the strip feeding direction are installed on the pedestal 1a below these strip supports 2a.

A carriage 4a mounted on the rail 3a in a reciprocating manner is moved by a reciprocating means comprising a threaded rod 5a and a nut member 5b.

Here, the front and back, left and right, and up and down directions are defined in the strip feeding direction toward the press P.

The first gripper and the second gripper 10.20 are installed on the carriage 4a, and grip the vicinity of both left and right ends of the strip A supported by the strip receiver 2a from above and below.

In FIG. 8, in the first gripper 10, a U-shaped sliding base 12 is reciprocated on a bed 11 by a feed screw rod supported by the bed and a feed nut member 14 screwed into the feed screw rod. The sliding table 12 is provided with a fixed piece 15 and a movable piece 16 that sandwich the strip plate, and are sandwiched between the piston cylinder mechanism 17. Reference numeral 18 denotes a guide roller on the end surface of the band plate, which is provided on the lower surface of the fixed piece 15. Second gripper 20
is similarly configured.

In addition, in the outlet side feeding section H, the pedestal 1b, the band plate support 2b
, rail 3b, reciprocating table 4b, threaded rod 6a serving as reciprocating means 6
, the nut member 6b is constructed similarly to the one on the inlet side. A first gripper 40 installed on the carriage 4b
and the second gripper 50 is also the one on the inlet side 10.20
It is configured in the same way as . Furthermore, a plurality of long belt conveyors 7 are provided between the strip supports 2b along the strip feeding direction.

In order to feed and perforate short plates in addition to the strip plates, an inlet side short plate feeder 30 (shown in Figure 2.3.4) and an outlet side short plate feeder 60 (shown in Figure 5.6.7) are provided. is provided.

That is, as shown in FIG. 9, which is shown in an enlarged view, in the outlet side short plate feeding section 60, the bracket 61 is attached to the carriage 4b.
is provided so as to be freely raised and lowered by a lifting means 62 consisting of a piston cylinder mechanism, a guide rod 63 and a guide bush 64. A third gripper 65 is provided extending rearward from the tip of the bracket 61. That is,
The fixed piece 65a projects upstream in the strip feeding direction, and a swinging piece 65b is rotatably attached to the vicinity of its tip by a pin, and is opened and closed by a fluid piston cylinder machine PA65c. A pair of left and right short plate feeding parts 60 are provided to sandwich the front end of the short plate.

Further, the entrance-side reciprocating platform portion 30 is similarly constructed, but the third gripper 35 projects forward from the front end of the bracket 31 and grips the rear end portion of the short plate.

The operating state will be explained above.

In FIG. 1, when the inlet and outlet carriages 4a and 4b of the strip feeding units G and H are in the retreat position and the table lifter F is in the ascending position 1, the strip A is transferred from the strip coil B to the level feeder. It is fed out at D, and is sent through the shear E while being supported by the table lifter F, and the front end of the strip is brought into contact with the strike 7 pawl S provided at the press entrance.

After that, the NC control is activated, and the first. The second gripper 10.20 is brought close to the strip A and closed to grip the strip. Next, the entrance side carriage 4a is pitch-fed and the punch press P punches a hole.

When the entrance side carriage 4a comes to the forward position, the first
．． The second gripper 10.20 is opened to retract the carriage 4a, and the first gripper 10.20 is moved back. The second gripper 10.20 is closed to cause the carriage 4a to move in pitch. Thereafter, pitch feed is performed by the entrance side carriage 4a in the same manner.

On the other hand, when the table lifter F is in the lowered position, a strip loop L is formed just above it, and the level feeder D
control the drive of the belt A, and simultaneously measure the unwinding length of the strip A.
When the set length is reached, the level feeder D is stopped and the shear E is activated to cut the strip.

When the entrance side carriage 4a is at the retreated position and the rear end of the band plate A is in front of it, the carriage 4a and the first carriage 4a are connected to each other. Deactivate the second gripper 10.20. Then, with the exit carriage 4b in the retracted position, the exit side first carriage 4b is in the retracted position. The second grippers 40 and 50 are closed to grip the strip A, and then the exit carriage 4b is pitch-fed. When the exit carriage 4b comes to the forward position, the exit side first. Second
The grippers 40 and 50 are opened to move the exit carriage 4b backward, and the loop conveyor 7 is operated to send the rear end portion of the strip to the outside of the exit side feeding section H.

During the operation, the strip A is smoothly fed while being received by the rollers on the upper surface of the strip receiver 2a.

Next, when sending the rectangular short plates to make a hole, the plurality of short plates stacked on the table lifter F are sequentially moved from the top onto the entrance side band plate receiver 2a by the operator. At this time, the third gripper 35 is lowered below the upper surface of the strip support 2a and is in the retreated position. Then, the short plate whose rear end is gripped by the third gripper 35 is pitch-fed by the feeding means 5, and is perforated by the press P.Next, when the third gripper 35 on the entrance side reaches the forward position, the short plate is released. , the exit-side third gripper 65 in the retracted position grips the front end of the short plate and feeds it in pitch.

When the third gripper 65 on the exit side reaches the forward position, it releases the short plate, descends, and retreats under the short plate. At the same time, the conveyor 7 operates to send out the short plate.

The present invention is not limited to the embodiments and embodiments described above, but includes various modifications without departing from the spirit and scope of the claims.

G. Effects of the Invention With the configuration of the present invention, the distance from the shear to the press can be dramatically shortened, and a long strip can be automatically perforated and cut while being unwound from the coil.

[Brief explanation of drawings]

Fig. 1 is a schematic side view of an embodiment of the device of the present invention, Fig. 2 is an enlarged side view of the inlet side feed section G, Fig. 3 is a plan view of Fig. 2, and Fig. 4 is the left side of Fig. 2. The top view and Figure 5 are of the outlet side feeding section H.
Figure 6 is a plan view of Figure 5, Figure 7 is an enlarged side view of Figure 5.
8 is an enlarged view of the first gripper 10 of FIG. 4, and FIG. 9 is an enlarged view of the third gripper 60 of FIG. 5. A... Band plate, B... Band coil, C
...Uncoiler, D...Level feeder E
...Shear, F...Table lifter,
P... Punch press, J... Measuring roller,...
... Band loop, G... Entrance side sending part, 1a... Frame, 2a... Band plate holder, 3a... Rail, 4a... Reciprocating table, 5... Reciprocating means, 5a ... Threaded rod, 5b... Nut member, 10...
First gripper 11...bed, 12...sliding table, 13...
・Feed screw, 14... Feed nut member, 15...
Fixed piece, 16... Moving piece, 17... Piston cylinder mechanism, 18... Guide roller, 20... Second gripper 30... Short plate feeding part, H... Exit side feeding part, 1b... Frame, 2b... Band plate holder, 3b... Rail, 4b... Reciprocating stand, 6... Reciprocating means, 6a... Threaded rod, 6b... Nut member 7... - Conveyor, 40... First gripper 50... Second gripper 60... Short plate feeding section 61... Bracket, 62... Lifting means, 63... Guide bar, 64... Guide Bush, 65...Third gripper 65a...Fixed piece, 65b...Moving piece, 65c...Piston cylinder mechanism, Patent applicant Filed Co., Ltd. Agent Patent attorney Shinpei Inukai

Claims (3)

[Claims] (1) When the inlet and outlet side carriages of the strip feed section are in the retreat position and the table lifter is in the raised position, the strip unwound from the strip coil is supported by the table lifter through the level feeder and shear. While moving, the front end of the strip plate is placed between the openings of the first and second grippers to hit a stopper provided at the press entrance, and then the first and second grippers are closed, and the entrance side carriage is pitch-fed. When the entrance side reciprocating carriage reaches the forward position, the first and second grippers are opened to move the carriage backward, and the first and second grippers are closed again to move the reciprocating carriage back. The table is pitch-fed, and then the entrance-side carriage is fed pitch-fed in the same manner.Meanwhile, when the table lifter is in the lowered position, a strip loop is formed just above it, and the bottom of the loop is within the set upper and lower limits. As shown in , controlling the drive of the level feeder, simultaneously measuring the length of the strip to be fed out, and when the length reaches the set length, stopping the level feeder and activating a shear to cut the strip, When the entrance side carriage is in the retracted position and the rear end of the strip comes in front of it, the operation of the carriage and the first and second grippers is stopped, and the exit side carriage is in the retracted position. Then, close the first and second grippers on the exit side to grip the strip,
Thereafter, the exit carriage is pitch-fed, and when the exit carriage reaches the forward position, the first and second exit grippers are opened to move the exit carriage backward, and the loop conveyor is operated. A method for perforating and cutting a strip, characterized by feeding the rear end portion of the strip to the outside of an exit-side feeding section. (2) When the level feeder, the strip length measuring means that calculates from the rotation speed of the length measuring roller that rolls in contact with the moving strip, and the bottom of the strip loop are between the set upper and lower limits. drives the level feeder, and when the bottom of the strip loop becomes higher than the set upper limit, stops the pitch feed of the strip, and also drives the level feeder so that the bottom of the strip loop becomes higher than the set lower limit. At the lower level, there is a loop control unit configured to stop the level feeder, a shear installed ahead of the level feeder in the strip feeding direction, a table lifter installed in front of the shear, and a table lifter installed in front of the lifter. The entrance measuring and feeding section includes an installed entrance metering and feeding section, a punch press installed in front of the punch press, and an exit metering and feeding section installed in front of the entrance metering and feeding section. to support and feed along its length,
A plurality of parallel inlet side strip supports extending parallel to the strip feeding direction, a plurality of entrance side rails installed below these strip supports and parallel to the strip feeding direction, and a reciprocating motion on the rails. an entrance-side reciprocating carriage mounted freely; an entrance-side reciprocating means for reciprocating the carriage; and an entrance that is installed on the carriage and clamps the vicinity of the left and right ends of the strip supported by the strip support. The outlet side feeding section includes a side first gripper and an entrance side second gripper, and the exit side feeding section includes an exit side strip support similar to the entrance side feeding section, an exit side rail, an exit side carriage, and an exit side reciprocating means. A strip perforating and cutting device comprising: a first gripper on the exit side, a second gripper on the exit side, and a loop conveyor installed between the strip support on the exit side. (3) The entrance side carriage is provided with a third gripper for holding the rear end of the short plate, and the exit side carriage is provided with a third gripper for holding the front end of the short plate, each of which is movable up and down. 3. The band plate perforating and cutting device according to claim 2.