JPH08168821A - Bending machine - Google Patents

Abstract

PURPOSE: To immediately perform band-working after positioning, and to improve work efficiency by providing the positioning device of a metal plate on a blade supporting member on which a bending blade movable in the vertical direction and the forward and the backward directions is mounted. CONSTITUTION: The corner parts of a metal plate W are inserted in the recessed parts h19 and h19' of the positioning blocks h18 and h18' of turning arms h16 and h16' equipped on the running bodies h5 and h5' of a positioning device H arranged on a blade supporting member 12. The longitudinal direction and the orthogonal direction of the blade supporting member 12 of the metal plate W can be positioned by bringing the turning arms h16 and h16' each other, and by abutting the side edges of the corner parts of the metal plate W on the inside walls of the side walls h20 and h20' of the positioning blocks h18 and h18h', and a positioning time is shortened and work efficiency can be improved. Also, the bending amount of the metal plate W can be adjusted by operating a cylinder 20a and by moving the blade supporting member 12 in the forward and the backward directions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bending machine for bending an edge of a plate such as a metal plate such as a steel plate or a synthetic resin plate, and more particularly to a bending machine having a plate material positioning device. Is.

[0002]

2. Description of the Related Art Conventionally, prior to sandwiching a plate material by a counter blade fixed to a machine base and a blank holder which moves up and down, the plate material is fed until it abuts a stopper such as a pin arranged on a table, There is known a bending machine that aligns the feeding start positions of plate materials, that is, performs so-called origin search, and then feeds the plate material gripped by the carriage to position the plate material at a predetermined position.

[0003]

In the above-mentioned conventional bending machine, after the origin is set by the stoppers such as pins arranged on the table, the plate material is gripped by the clamp means arranged on the carriage. Then, after feeding the carriage by a predetermined amount, the plate material was sandwiched by the counter blade and the blank holder, and then the edge portion of the plate material was bent by the bending blade. in this way,
After the origin has been set, the amount of bending of the plate material is set by sending out the carriage by a predetermined amount.
There is a problem that it takes a long time to finally position the plate material, and therefore the efficiency of the bending work of the plate material is reduced.

Also, in the conventional bending machine, a positioning device for the plate material in the longitudinal direction of the bending machine must be separately provided, which complicates the bending machine itself and its control, and lowers work efficiency. There is a problem of doing.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the conventional bending machine described above and to provide a bending machine having a simple structure and easy maintenance.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention positions a plate member on a blade supporting member to which a bending blade movable in the vertical direction and the front-back direction is attached. A device is provided, and the positioning device has a pair of running bodies that can run along the longitudinal direction of the blade support member, and the positioning means is provided on the running bodies. Yes, further, the positioning means disposed on the pair of traveling bodies,
It has a swivel arm to which a positioning block is attached, the surface and the tip end portion of which face each other are open, and the side wall is provided on the surface opposite to the surface which faces each other.

First, FIG. 1 is a side view of the bending machine of the present invention and FIG. 2 is a partial perspective view of the bending machine of the present invention.
The bending machine of the present invention will be described using.

For convenience of explanation, a member located on the left side of the front surface of the bending machine (the side on which a blank holder and a counter blade, which will be described later, are arranged) is placed next to the arithmetic numeral (a). And the member on the right side having the same structure as this member is attached with (b) next to the arithmetic numeral. Further, since various members constituting the bending machine of the present invention are disposed symmetrically with each other, in the following, a member located on the left side of the front surface of the bending machine will be mainly described.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral f is a machine base of a bending machine, and a counter blade 1 is fixed to the front part of an upper frame f1 of the machine base f. Reference numeral 2 denotes a vertically movable blank holder that holds the plate material w with the counter blade 1 when the plate material w is bent. Reference numerals 3a and 3b denote brackets provided upright in the center of the upper frame f1 of the machine base f, and horizontal pins 4a and 4b are attached to the brackets 3a and 3b. Vertical legs 5a and 5b are provided near the center of the vertical legs 5.
a ', 5b' are formed, and horizontal pins 4a attached to the brackets 3a, 3b are inserted into through holes provided in the vertical legs 5a ', 5b' of the support arms 5a, 5b. 4b is inserted. 6 is a support arm 5
The blank holder 2 is attached to the lower part of the holder supporting member 6 which is a holder supporting member having a substantially rectangular tube shape arranged at the front end of the machine base f of a and 5b.

Numerals 7a and 7b are a pair of cylinders for driving the support arms 5a and 5b, which are arranged on brackets 8a and 8b attached to the rear side wall f2 of the machine base f. Bifurcated members 10a and 10b are attached to the tips of piston rods 9a and 9b of 7a and 7b, and pins 11a and 11b stretched on the bifurcated members 10a and 10b are respectively attached to the support arms 5a and 5b. The cylinders 7a and 7b are inserted into through holes formed at the ends thereof. The support arms 5a and 5b are attached to the bracket 3
a holder support member 6 to which the blank holder 2 is attached is attached to one end of the support arms 5a and 5b which is pivotally attached to the horizontal pins 4a and 4b attached to a and 3b. Piston rods 9a and 9b of cylinders 7a and 7b are pivotally attached to the cylinder.

The support arms 5a and 5b actuate a pair of cylinders 7a and 7b arranged on brackets 8a and 8b attached to a rear side wall f2 of the machine base f to advance piston rods 9a and 9b. The bracket 3
The horizontal pins 4a and 4b attached to a and 3b can be rotated in the clockwise direction in FIG. 1, and the rotation of the support arms 5a and 5b in the clockwise direction causes the holder support member 6 to rotate. The blank holder 2 attached to the lower part is lowered so that the plate material w can be sandwiched between the counter blade 1 and the blank holder 2. In addition, the piston rods 9a and 9b are connected to the cylinder 7
The support arms 5a, 5a are accommodated by being housed in a, 7b.
b can be rotated in the counterclockwise direction in FIG. 1, and the counterclockwise rotation of the support arms 5a and 5b raises the blank holder 2 attached to the lower part of the holder support member 6. It is configured so that a gap into which the plate material w can be inserted is formed between the counter blade 1 and the counter blade 1.

Reference numeral 12 denotes a blade supporting member having a substantially U-shaped side surface, and the tip end portion of the blade supporting member 12 is
The folding blades 13 and 14 are attached, respectively.
A pair of brackets 15a consisting of parallel plates 15a 'and 15a "standing upright at a predetermined interval near both ends in the longitudinal direction of the rear vertical surface 12' of the blade support member 12,
15b is fixed, and brackets 15a,
A horizontal pin 16a is attached to 15b. In addition,
The parallel plates 15a ', 15a "of the bracket 15a as well as the parallel plates of the bracket 15b and the horizontal pins as the horizontal pins 16a are not shown.

Reference numeral 17a is a bracket fixed to the upper frame f1 of the machine base f, and a pin 18a is attached to the bracket 17a. The pin 18a is a corner of a substantially inverted triangular rotary plate 19a. It is inserted into a hole formed in the section. Further, the above-described horizontal pin 16a attached to the bracket 15a is inserted into the hole formed in the other corner of the rotating plate 19a. The forked member 22a attached to the tip of the piston rod 21a of the cylinder 20a is inserted into the hole formed in the other corner of the rotating plate 19a.
A pin 23a stretched over is attached. The cylinder 20a is a bracket 24a composed of parallel plates 24a 'and 24a "provided upright on the upper frame f1 of the machine base f.
Is pivotally supported via a suitable pin 25a. In addition, a bracket similar to the bracket 17a and the rotating plate 1 described above.
A rotary plate similar to 9a, a cylinder similar to cylinder 20a, a bracket 24b similar to bracket 24a, etc. are also arranged on the right side of upper frame f1 of machine base f.

Reference numeral 26a corresponds to a bracket 15a fixed to the rear vertical surface 12 'of the blade supporting member 12,
A bracket fixed to the lower surface 12 ″ of the blade support member 12, only the front bracket 26 a is shown in FIG. 1, but the rear vertical surface 1 of the blade support member 12 is shown.
Corresponding to the bracket 15b fixed to 2 ', a similar bracket is fixed to the lower surface 12 "of the blade supporting member 12. 27a is a bracket that is erected on the upper frame f1 of the machine base f. The bracket 27a is a bracket that is erected on the intermediate wall f3 of the machine base 1 like the bracket 24a.
To the cylinder 2 through a suitable pin 28a in a substantially vertical position.
9a is pivotally supported. Also, a bifurcated member 31a attached to the tip of the piston rod 30a of the cylinder 29a.
The pin 32a that is stretched on the bracket is inserted into a through hole that is formed in a bracket 26a that is fixed to the lower surface 12 ″ of the blade support member 12. The bracket 26a is the same as the bracket 26a. A similar bracket, a cylinder similar to the cylinder 29a, and the like are also arranged on the right side of the upper frame f1 of the machine base f.

By operating the cylinder 20a to move the piston rod 21a forward or backward, the rotary plate 19a having a substantially inverted triangular shape is centered around the pin 18a attached to the bracket 17a in FIG. The blade support member 12 to which the bending blades 13 and 14 are attached can be moved to the left and right by swinging the rotating plate 19a in the left and right directions. It can be moved in the left-right direction, that is, in the front-back direction of the bending machine about the pin 32a stretched on the forked member 31a of the piston rod 30a. Further, the cylinder 29a is operated to move the piston rod 30a.
By advancing or retracting the
The blade support member 12, to which the blades 3 and 14 are attached, is fixed to the rotating plate 19 which is stationary due to the inactivation of the cylinder 20a.
The pin 16a of a can be moved vertically. As described above, the bending blades 13 and 14 attached to the blade supporting member 12 are controlled by appropriately controlling the operations of the cylinder 20a and the cylinder 29a.
It is configured so that the position of can be adjusted.
Note that the same operation as above is performed except that the upper frame f1 of the machine base f is
It is also done on the right side of.

The operational effects of the bending machine having the above-mentioned structure are listed below.

The central portions of the support arms 5a and 5b are
Horizontal pins 4a, 4b attached to brackets 3a, 3b
Since it is pivotally attached to the seesaw like shape, the support arm 5a,
The vertical movement distance of the holder support member 6 disposed at the front end of the machine base f of 5b is such that the holder support member is attached to the tip of a conventional support arm whose one end is pivotally attached to the machine base. It is smaller than that of the bending machine. Therefore, the space above the bending machine is small, and the space can be saved.

Further, the brackets 8a and 8b are attached to the rear side wall f2 of the machine base f, and the cylinders 7a and 7b for driving the support arms 5a and 5b are arranged on the brackets 8a and 8b. However, since the cylinders 7a and 7b are located outside the machine base f, the cylinders 7a and 7b can be easily maintained and managed, and the space for the machine base f can be increased. Maintenance of parts becomes easy.

Further, the support arms 5a and 5b have a horizontal pin 4 whose central portion is attached to the brackets 3a and 3b.
Since they are pivotally attached to the a and 4b in a seesaw shape, most of the weight of the support arms 5a and 5b is the brackets 3a and 3b.
Carried by the support arms 5a, 5b
The cylinders 7a and 7b for driving the can be made small with a small horsepower, the bending machine can be made compact and lightweight, and energy saving can be realized.

Furthermore, the distance from the horizontal pins 4a, 4b of the brackets 3a, 3b to the cylinders 7a, 7b for driving the support arms 5a, 5b is defined by the horizontal pins 4a,
4b to the blank holder 2 attached to the blade supporting member 12 arranged at the tips of the supporting arms 5a and 5b, or by making the distance longer than this distance, the counter blade 1 and the blank holder 2 are The clamping force of the plate material w due to can be increased.

Next, with respect to the positioning device H arranged on the front vertical surface of the blade supporting member 12 having the above-mentioned side surface shape of a substantially U shape, the front surface of the blade supporting member 12 on which the positioning device H is arranged. 3 is a diagram, FIG. 4 is an enlarged perspective view of the positioning device H, FIG. 5 is a schematic plan view of the positioning device H showing a positioning process, and FIG. 6 is an enlarged perspective view of a positioning block of the positioning device H. Explain.

H1 and h1 'are blade supporting members 12
It is an extension frame extended at both ends in the longitudinal direction of
Bearings h are provided on the extension frames h1 and h1 ′, respectively.
2, h2 'are provided upright, and the bearings h2, h2' support a feed screw h3 having opposite screws formed on both sides of the central portion. Incidentally, h4 is a bearing for supporting the central portion of the feed screw h3 which is erected on the front vertical surface of the blade supporting member 12.

H5 and h5 'are traveling bodies each having a ball nut (not shown) to be engaged with the feed screw h3, which is arranged in the left side region and the right side region of the feed screw h3, respectively. , H6 and h7 are running bodies h5,
An upper slide block h8, h8 'and a lower slide block h9, h9' of h5 'are slidable, respectively, rails arranged on the front vertical surface of the blade support member 12 and a lower horizontal plane of the blade support member 12. It is a rail arranged in.

Reference numeral h10 denotes a forward / reverse rotatable motor arranged on the extension frame h1 ', and attached to an end of a pulley h11 and a feed screw h3 attached to an output shaft of the forward / reverse rotatable motor h10. A belt h13 is stretched around the attached pulley h12. Therefore, the motor h10 capable of rotating in the normal and reverse directions is appropriately driven to drive the pulley h1.
The direction in which the traveling bodies h5 and h5 'approach each other or move away from each other by rotating the feed screw h3 in which the opposite screws are formed with the central portion sandwiched therebetween through the belt 1, the belt h13, and the pulley h12. It is configured to be able to move to.

In FIG. 3, h14 and h14 'are frames attached to the lower parts of the right side surfaces of the running bodies h5 and h5'. The frames h14 and h14 'are motors or rotating cylinders capable of rotating in the forward and reverse directions. Rotation driving means h1 such as
5, h15 'are provided. h16 and h16 '
Are output shafts h17, h of the rotation driving means h15, h15 '.
17 'is a swing arm attached to the swing arm h1.
Positioning blocks h18, h are provided at the tips of 6, h16 '.
18 'is attached. Rotation drive means h15, h1
By appropriately driving 5 ′, the swing arm h1
6, h16 ′ is rotated between a standby position, which is indicated by a chain double-dashed line in FIG. 4, parallel to the feed screw h3, and an operating position, which is indicated by a solid line and is orthogonal to the feed screw h3. Is configured to be able to.

As shown in FIGS. 4 and 6, the positioning blocks h18 and h18 'are provided with V-shaped recesses h19 and h19' whose side faces are substantially horizontal, as shown in FIGS. Side walls h20 and h20 ′ are provided on the side surfaces of the positioning blocks h18 and h18 ′ on the end side of the blade support member 12, respectively. That is, when the revolving arms h16 and h16 'are in the operating position orthogonal to the feed screw h3, the positioning block h18 attached to the revolving arm h16 and the positioning block h18' attached to the revolving arm h16 'are The surfaces facing each other and the tip end portion are opened, and the sidewalls h20 and h20 ′ are provided on the surface opposite to the surface facing each other. The recesses h19 and h19 ′ with which the tip w ″ of the plate material w abuts so as to be able to cope with an angle variation that changes depending on the positions of the positioning blocks h18 and h18 ′ in the front-rear direction.
The tip end portion h21 of the is rounded.

Further, in FIG. 3, the traveling body h5 and the traveling body h5 'located on the left and right sides respectively correspond to the turning arms h.
The rotation driving means h1 which is the center of rotation of 16, 16 '
5, h15 'output shafts h17, h17' are always arranged so as to be equidistant from the center point of the blade support member 12, and a forward / reverse rotatable motor h10 is appropriately driven, By rotating the feed screws h3, which are formed with mutually opposite screws with the central portion in between, the traveling bodies h5 and h5 'are extended frames h1 and h1' as shown by the two-dot chain line in FIG. It is configured to be able to move up to.

1 and 4, s1 and s
The reference numeral 2 is for holding the plate material w from the up and down direction, which is arranged at the tip portion C of the carriage (not shown) that can move forward or backward in the direction orthogonal to the longitudinal direction of the bending machine. It is a clamp means.

Next, the step of positioning the plate material w will be described with reference to FIGS.

The swivel arms h16 and h16 'are shown in FIG.
From the standby position parallel to the feed screw h3 shown in (a), the rotary drive means h15, h15 'are appropriately driven to be orthogonal to the feed screw h3 as shown in FIG. 5 (b). The rotating arm h1 is rotated by rotating the motor h10 capable of rotating in the forward and reverse directions as appropriate.
6, the swivel arm h16 until the distance w1 between the positioning blocks h18 and h18 'attached to the tips of the h16' becomes slightly narrower than the width w2 of the plate material w (width along the lengthwise direction of the feed screw h3). , H16 ′ are moved.

Then, a carriage (not shown) is operated to move the plate material w into the concave portions h19 and h1 at the corners of the plate material w as shown in FIGS. 5 (c) and 6 (a).
It is fed to the blade support member 12 until it is inserted into the recess 9h and comes into contact with the inner parts of the recesses h19 and h19 '. In this way, the plate material w can be positioned in the direction orthogonal to the longitudinal direction of the blade supporting member 12. At this time, since the spacing w1 between the positioning blocks h18 and h18 ′ is slightly smaller than the width w2 of the plate material w, as shown in FIG.
The side edges w ′ of the corners of the plate material w are positioning blocks h18,
The side walls h20 of h18 ′ and the inner wall of h20 ′ are located at a distance from each other.

Then, as shown in FIGS. 5 (d) and 6 (b), the motor h10 capable of forward and reverse rotations is appropriately driven to form side walls h20 and h20 of the positioning blocks h18 and h18 '. The revolving arms h16 and h16 'are brought close to each other until the inner wall of the'contacts the side edge w'of the corner of the plate material w. In this way, the plate material w can be positioned in the direction along the longitudinal direction of the blade supporting member 12.

After the positioning of the plate material w in the direction orthogonal to the longitudinal direction of the blade support member 12 and the positioning of the plate material w in the direction along the longitudinal direction of the blade support member 12 as described above, a pair of cylinders are completed. 7a and 7b are actuated to rotate the support arms 5a and 5b in the clockwise direction in FIG. 1 to lower the blank holder 2 attached to the lower part of the holder support member 6 to lower the counter blade 1 and the blank. The plate material w is sandwiched by the holder 2.

After that, a motor h10 capable of rotating in the forward and reverse directions.
5 (e), as shown in FIG. 5 (e), the rotating arms h16, h16 ′ are separated from each other, and the rotation driving means h15, h15 ′ are driven appropriately, as shown in FIG. As shown in f), the swing arm h1
6, h16 'is rotated to a standby position parallel to the feed screw h3.

Then, the cylinder 29a is operated to
Bending blade 1 attached to blade support member 12
The plate material w which is sandwiched between the counter blade 1 and the blank holder 2 by vertically moving 3, 14 as appropriate.
Fold.

As described above, the cylinder 20a is actuated to move the piston rod 21a forward or backward to move the rotary plate 19a having a substantially inverted triangular shape around the pin 18a attached to the bracket 17a. In FIG. 1, the bending blade 1 can be swung in the left-right direction. Therefore, the folding blade 1 can be swung in the left-right direction.
The blade support member 12, to which the blades 3 and 14 are attached, is connected to the piston rod 30a of the cylinder 29a which is not operating.
Since the pin 32a stretched over the bifurcated member 31a can be moved in the left-right direction, that is, in the front-back direction of the bending machine, the blade support member 12 can be appropriately moved in the front-back direction of the bending machine. By doing so, the tip end portions of the counter blade 1 and the blank holder 2 that sandwich the plate material w (the tip end portion in the direction of the blade supporting member 12 that serves as the bending fulcrum of the plate material w) and the positioning device disposed on the blade supporting member 12. Positioning blocks h18 and h1 of the swing arms h16 and h16 ′ mounted on the traveling bodies h5 and h5 ′ of H
The distance to 8'can be changed. Therefore, by operating the cylinder 20a, the blade support member 12 is
By appropriately moving in the front-back direction of the bending machine,
The bending amount of the plate material w can be changed.

As described above, the positioning blocks h18 and h18 'of the pivoting arms h16 and h16' mounted on the traveling bodies h5 and h5 'of the positioning device H arranged on the blade supporting member 12 have the recesses h19 and h19' of the positioning blocks h18 and h18 '. And the corners of the plate material w are inserted into the swivel arms h16 and h16 ′.
The positioning blocks h18, h1
Positioning of the plate material w in the direction orthogonal to the longitudinal direction of the blade support member 12 and the plate material w by bringing the side edges w ′ of the corners of the plate material w into contact with the inner walls of the side walls h20 and h20 ′ of 8 ′. The blade support member 12 can be positioned in the direction along the longitudinal direction. Therefore, after the plate material w is positioned in the direction along the longitudinal direction of the blade supporting member 12, the origin is set, and then the plate material w is fed again to determine the longitudinal direction of the blade supporting member 12 of the plate material w. The positioning time is shortened as compared with the conventional bending machine which performs the positioning in the direction orthogonal to.

Further, the cylinder 20a is operated to move the blade supporting member 12 to which the bending blades 13 and 14 are attached in the front-back direction of the bending machine to adjust the bending amount of the plate material w. You can

[0039]

Since the present invention is configured as described above, it has the following effects.

Since the positioning device for positioning the plate material is arranged on the blade supporting member to which the bending blade movable in the vertical direction and the front-back direction by the cylinder is attached, immediately after positioning the plate material by the positioning device, Bending can be done and the work efficiency of bending is improved.

Since the bending amount is adjusted by the movement of the blade supporting member in the front-back direction, a special bending amount adjusting device is not required, so that the structure of the bending machine is simplified, and accordingly, the bending machine can be easily operated. Maintenance management becomes easy.

By moving the traveling body of the positioning device disposed on the blade supporting member along the longitudinal direction of the blade supporting member, the plate material is positioned in the direction along the longitudinal direction of the blade supporting member 12. Therefore, a special device for positioning the blade supporting member 12 in the longitudinal direction can be omitted, and therefore, the plate material can be positioned quickly and the structure of the bending machine can be simplified.

[Brief description of drawings]

FIG. 1 is a side view of a bending machine of the present invention.

FIG. 2 is a perspective view of the bending machine of the present invention.

FIG. 3 is a front view of a blade support member provided with a positioning device.

FIG. 4 is an enlarged perspective view of a positioning device.

FIG. 5 is a schematic plan view of a positioning device showing a positioning step.

FIG. 6 is an enlarged perspective view of a positioning block of the positioning device.

[Explanation of symbols]

 H ・ ・ ・ ・ Positioning device f ・ ・ ・ ・ ・ ・ ・ ・ Machine stand w ・ ・ ・ ・ ・ ・ ・ Plate material 1 ・ ・ ・ ・ ・ ・ ・ Counter blade 2 ・ ・・ ・ ・ ・ ・ ・ ・ Blank holder 5 ・ ・ ・ ・ ・ ・ ・ ・ ・ Support arm 6 ・ ・ ・ ・ ・ ・ ・ ・ ・ Holder support member 7, 20, 29 ・ ・ ・ Cylinder 12 ..Blade supporting members 13, 14 ... Bending blades 19 ... Rotating plate h3 ... Feed screws h5, h5 '... , H16 '・ ・ Swivel arm h18, h18' ・ ・ Positioning block

Claims (3)

[Claims] 1. A bending machine in which a positioning device for positioning a plate member is provided on a blade supporting member to which a bending blade movable in the up-down direction and the front-back direction is attached. 2. The positioning device has a pair of running bodies that can run along the longitudinal direction of the blade supporting member, and the running means is provided with positioning means. Bending machine described in. 3. A positioning block, wherein the positioning means arranged on the pair of traveling bodies is provided with a side wall and a side wall on the surface opposite to the surface facing each other and the front end is opened. Bending machine according to claim 1 or 2, characterized in that it comprises a pivoting arm.