JP2007301584A - Initial setup method of bending apparatus, and bending apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an initial setup method of a bending apparatus capable of making the security of safety and the increase of the efficiency of the work compatible, and to provide the bending apparatus. <P>SOLUTION: By arranging clamping unit placing parts 5, 6 on which each clamping unit 2, 3 which is used by being combined with a bending die unit 4 on the bending die unit 4 and starting an initial setup program, each the clamping unit 2, 3 are received and delivered between opposed each tensing shaft 7, 8 and the bending die unit 4. In this way, the initial setup performed by hand heretofore, that is, the work for attaching and detaching the each clamping unit 2, 3 to and from opposed each tension shaft 7, 8 is automated and the increase of the efficiency of the initial setup and the security of safety can be made compatible. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a setting method for a bending apparatus and the bending apparatus, and more particularly to a method for setting a bending die unit and a gripping unit in an apparatus main body, and a bending apparatus that employs the setting method.

  In a stretch bender (bending device), both ends of a linear workpiece are gripped by gripping claws and pulled to both sides of the workpiece longitudinal direction, and the workpiece subjected to the tensile stress is pressed against the bending die of the bending die unit. To form a predetermined bow shape (see, for example, Patent Document 1). In this way, the stretch bender is a hollow material (workpiece) that has a relatively large external dimension without abrupt bending stress acting on a specific part of the work because bending is performed while applying a tensile stress to the work. However, it can be easily bent without filling the filler. In general, in a stretch bender, the bending mold unit, the gripping claws, and the core that prevents the gripping portions at both ends of the work from being crushed are dedicated for each product, so it is necessary to replace these dedicated parts every time the product changes. . However, since the gripping claw and core replacement work (setup) is a complicated work that is performed manually by an operator entering the equipment, it usually takes 20 to 30 minutes and productivity. The decline was a problem.

Therefore, conventionally, the gripping claw, the core, and the drive unit (clamp mechanism) for driving the gripping claw have been used as a gripping unit capable of one-touch replacement, and the efficiency of replacement work (setup) has been improved. To perform the replacement work manually, the weight is large and it is difficult to ensure safety. Further, when the bending mold unit and the gripping unit opposite to the bending mold unit are stored separately, these management operations become complicated.
JP 2000-237825 A

Therefore, the present invention has been made in view of the above circumstances, and a first object is to provide a setup method for a bending apparatus capable of ensuring both safety and work efficiency.
A second object is to provide a bending apparatus capable of ensuring both safety and work efficiency.

  In order to achieve the first object, according to the first aspect of the present invention, both ends of a linear workpiece are gripped by a pair of gripping units, and the workpiece is longitudinally moved by the pair of gripping units. This is a set-up method of a bending apparatus in which a work is formed into a predetermined arcuate shape by rotating each gripping unit and pushing the work against a bending die of a bending die unit while pulling to both sides, and is stored in a control device. When the setup program is started, each gripping unit is transferred between each tension shaft and the bending die unit facing each other.

  According to a second aspect of the present invention, in the setup method of the bending apparatus according to the first aspect, the pair of gripping units are placed on a bending die unit used in combination with the pair of gripping units. It is managed by state.

  In order to achieve the second object, the invention according to claim 3 of the present invention is configured such that both ends of a linear workpiece are gripped by a pair of gripping units, and the workpiece is longitudinally moved by the pair of gripping units. Each bending unit is turned into a predetermined arcuate shape by turning each gripping unit while turning it and pushing the work against the bending die of the bending die unit. A chuck mechanism that is attached to and detached from the mounting unit, and a gripping unit mounting portion that is provided in the bending mold unit and on which a pair of gripping units that are used in combination with the bending mold unit is mounted. .

  According to a fourth aspect of the present invention, in the bending apparatus according to the third aspect, the setup program is stored in the control device, and each gripping unit is transferred between each opposing tension shaft and the bending die unit. It is characterized by comprising.

Therefore, in the bending apparatus setup method and the bending apparatus according to claims 1 and 4, each gripping unit is automatically transferred between each tension shaft and the bending die unit.
In the setup method of the bending apparatus according to claim 2, management of the pair of gripping units and the bending die unit used in combination with the pair of gripping units is unified.
In the bending apparatus according to claim 3, each tension shaft is positioned at a predetermined delivery position, and in this state, the chuck mechanism is chucked to be placed on the gripping unit placement portion of the bending die unit. Each gripping unit is attached to each opposing tension shaft. Further, each tension shaft is positioned at a predetermined delivery position, and in this state, the chuck mechanism is unchucked so that each gripping unit attached to each tension shaft is detached from each tension shaft and mounted on the gripping unit. It is mounted on the mounting part.

  It is possible to provide a bending apparatus setup method and a bending apparatus capable of ensuring both safety and work efficiency.

  An embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, the stretch bender 1 (bending apparatus) grips both ends of a linear workpiece (for example, a car wind molding) by a pair of gripping units 2 and 3, While the workpiece is pulled in the longitudinal direction (left and right direction in FIGS. 1 and 2) by the pair of gripping units 2 and 3, the gripping units 2 and 3 are turned to press the workpiece against the bending die 20 of the bending die unit 4. Thus, the workpiece is formed into a predetermined bow shape (bow shape). In the stretch bender 1, grip unit mounting portions 5 and 6 on which the grip units 2 and 3 used in combination with the bend die unit 4 can be placed are disposed on the bending die unit 4. By activating the setup program stored in the control device, the gripping units 2 and 3 are automatically transferred between the opposing tension shafts 7 and 8 and the bending die unit 4. It has become.

  As shown in FIGS. 1 and 2, in the stretch bender 1, the bending unit 4 is installed in the center of a horizontally installed base 9 in the left-right direction (left-right direction in FIGS. 1 and 2). A bending mold installation base 10 is provided, and a pair of swiveling units 11 and 12 that operate based on the control of the control device are disposed on both the left and right sides of the base 9 with the bending mold installation base 10 interposed therebetween. The swivel units 11 and 12 are provided on the swivel bases 13 and 14 that swirl along the orbits OL and OR, and the swivel bases 13 and 14, and the bending mold installation base 10 (bending molds) is placed on the swivel bases 13 and 14. Movable columns 15 and 16 that can move forward / backward with respect to the unit 4), and tension shafts 7 and 8 that are provided in the movable columns 15 and 16 and are movable in the vertical direction (vertical direction in FIG. 1); Consists of. Each gripping unit 2 and 3 is dedicated to each product, and each frame 17 is provided with a gripping claw, a clamp mechanism that drives the gripping claw, and a core that prevents the gripping portions at both ends of the work from being crushed. Established. The stretch bender 1 is provided with a chuck mechanism that operates based on the control of the control device, and the chuck mechanism is chucked / unchucked, whereby each gripping unit 2, 3 is opposed to each tension shaft 7, 8 is configured to be attached to and detached from the front end portion.

  As shown in FIGS. 1 and 2, the bending die unit 4 includes a plurality of (5 in the present embodiment) die support members 19 arranged on the base plate 18 in the left-right direction. The bending dies 20 configured to be divided in the workpiece longitudinal direction (left-right direction) are fixed to the member 19. The bending die unit 4 includes a plurality of (three in the present embodiment) intermediate clamps 21 each having a hydraulic cylinder so as to be opposed to the bending die 20. The portion is pressed and clamped toward the bending die 20. And in this stretch bender 1, each said grip unit mounting part 5 and 6 is formed in the upper part of the type | mold support member 19 arrange | positioned at both right and left sides, and each grip unit mounting part 5 and 6 has each grip unit. 2 and 3 are mounted.

  Next, the setup method of this stretch bender 1 (bending apparatus) is demonstrated. First, the case where the gripping units 2 and 3 are attached to the opposing tension shafts 7 and 8 (preparation) will be described. First, the bending mold unit 4 lifted by a crane or the like is installed on the bending mold installation base 10 of the stretch bender 1. As shown in FIG. 3, in the bending mold unit 4, the gripping units 2 and 3 used in combination with the bending mold unit 4 are mounted on the gripping unit mounting portions 5 and 6. Has been. Then, after the bending mold unit 4 is installed, the grip unit mounting program (setup program) of the control device is started. As a result, as shown in FIG. 4, the movable columns 15 and 16 are moved forward with respect to the bending die unit 4, and the chuck mechanism is chucked, whereby the gripping units 2 and 3 are opposed to each other. 7 and 8 are attached.

  After the mounting of the gripping units 2 and 3, the moving columns 15 and 16 are retracted with respect to the bending die unit 4, and the moving columns 15 and 16 are returned to the initial state shown in FIG. As a result, the gripping unit mounting program is completed and the pre-setup is completed. In addition, when the both ends of the linear workpiece are gripped by the gripping units 2 and 3 after the pre-setup is completed, the bending program of the control device is started. As a result, the workpiece is pulled to both sides in the longitudinal direction by the pair of tension shafts 7, 8, and the swiveling units 11, 12 are swung in a state where tensile stress is applied to the workpiece. As a result, the workpiece is pressed against the bending die 20 of the bending die unit 4, and the workpiece is formed into a predetermined bow shape (product shape).

  Next, a case where the gripping units 2 and 3 attached to the tension shafts 7 and 8 are detached (rear setup) will be described. When the product is taken out after the bending process is completed, each of the swivel units 11 and 12 returns to the initial state shown in FIG. When the gripping unit detachment program (setup program) of the control device is activated, as shown in FIG. 4, the movable columns 15 and 16 move forward with respect to the bending die unit 4, and each gripping unit is moved forward. 2 and 3 are positioned on the gripping unit mounting portions 5 and 6 of the bending die unit 4. In this state, when the chuck mechanism is unchucked, the gripping units 2 and 3 are detached from the tension shafts 7 and 8, and the gripping units 2 and 3 are placed on the gripping unit 4. Placed on the parts 5 and 6. Then, the movable columns 15 and 16 are retracted with respect to the bending die unit 4, and the swing units 11 and 12 are returned to the initial state shown in FIG.

  Next, the bending die unit 4 on which the gripping units 2 and 3 facing the gripping unit placement portions 5 and 6 are placed is lifted by a crane or the like and removed from the bending die installation base 10. The removed bending die unit 4 is stored in a predetermined bending die unit storage shelf in a state where the gripping units 2 and 3 used in combination with the bending die unit 4 are placed.

This embodiment has the following effects.
In this stretch bender 1 (bending apparatus), the bending unit unit 4 is provided with gripping unit mounting portions 5 and 6 on which the gripping units 2 and 3 used in combination with the bending die unit 4 can be mounted. The gripping units 2 and 3 are transferred between the opposing tension shafts 7 and 8 and the bending die unit 4 by starting the setup program.
As a result, the stretch bender 1 can automate the setup which has been conventionally performed manually, that is, the operation of attaching and detaching the gripping units 2 and 3 to the opposing tension shafts 7 and 8. Both efficiency and safety are compatible.

  Further, in the stretch bender 1, the bending die unit 4 is stored in a state where the gripping units 2 and 3 used in combination with the bending die unit 4 are placed on the gripping unit placement portions 5 and 6. Therefore, the management of the bending mold unit 4 and the gripping units 2 and 3 is unified, and the management of the gripping units 2 and 3 can be simplified.

In addition, embodiment is not limited above, For example, you may comprise as follows.
In the present embodiment, the gripping units 2 and 3 are placed on the gripping unit placement portions 5 and 6 formed on the upper portion of the die support member 19 of the bending die unit 4. , Each gripping unit 2, 3 can be transferred between the respective tension shafts 7, 8 and the bending mold unit 4, and the bending mold unit 4 and the gripping units 2, 3 If the management of the gripping unit is unified, the gripping unit mounting portions 5 and 6 are not necessarily formed on the upper part of the mold support member 19. For example, each gripping unit is placed on the base plate 18 of the bending mold unit 4. A dedicated pedestal for placing 2 and 3 may be installed.

It is a front view of this stretch bender, and is a figure showing an initial state where each grip unit is especially attached to each opposing tension shaft. It is a top view of this stretch vendor. It is operation | movement explanatory drawing of this stretch bender, Comprising: It is a front view which shows the state by which each holding | gripping unit was mounted on the bending die unit especially. It is operation | movement explanatory drawing of this stretch vendor, Comprising: It is a front view which shows the state in which each moving column was especially located in the delivery position of each holding | grip unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stretch bender (bending apparatus), 2,3 Gripping unit, 4 Bending die unit, 5,6 Gripping unit mounting part, 7,8 Tension axis, 20 Bending die

Claims (4)

Both ends of the linear workpiece are gripped by a pair of gripping units, and the workpiece is turned into a bending die of a bending die unit by rotating each gripping unit while pulling the workpiece to both sides in the longitudinal direction by the pair of gripping units. It is a setup method of a bending apparatus in which the workpiece is formed into a predetermined arcuate shape by pressing,
The setup of the bending apparatus is characterized in that each of the gripping units is transferred between each of the opposing tension shafts and the bending mold unit by starting a setup program stored in the control device. Method.   2. The setup method for a bending apparatus according to claim 1, wherein the pair of gripping units are managed in a state of being placed on a bending die unit used in combination with the pair of gripping units. . Both ends of the linear workpiece are gripped by a pair of gripping units, and the workpiece is turned into a bending die of a bending die unit by rotating each gripping unit while pulling the workpiece to both sides in the longitudinal direction by the pair of gripping units. A bending apparatus in which the workpiece is formed into a predetermined bow shape by pressing,
A chuck mechanism in which each gripping unit is attached to and detached from each of the opposing tension shafts, and a gripping unit that is provided in the bending die unit and on which the pair of gripping units used in combination with the bending die unit is placed A bending apparatus comprising: a mounting portion;   4. The bending apparatus according to claim 3, wherein the bending unit is stored in a control device, and each of the gripping units includes a setup program that is transferred between each of the opposing tension shafts and the bending die unit. .

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