JP2858847B2 - Work positioning device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a work positioning device configured to position and hold a work by at least one set of long jigs.

[Background Art] When performing welding or machining work on various works, a jig is used to position the works in a predetermined posture.

For example, when a stiffener member is welded to a panel member such as a roof or a hood constituting an automobile body, an operation of positioning and fixing the outside of the stiffener portion to a jig larger than this is performed in advance.

[Problems to be Solved by the Invention] However, when positioning a relatively large work such as a stiffener member, a jig having a size larger than that of the work must be prepared. The required jig replacement work is considerably complicated. Moreover, as the number of types of workpieces increases, the number of required jigs also increases, and the space for accommodating a large number of such large jigs increases, and equipment for jig replacement increases in size. Would.

The present invention solves this kind of problem. Even when positioning a relatively large work, the jig itself can be miniaturized as much as possible, and the jig itself has excellent handleability. It is an object of the present invention to provide a work positioning device capable of easily reducing a space for accommodating tools.

[Means for Solving the Problems] In order to solve the above problems, the present invention is an apparatus for positioning and holding one or more works. A set of first long jigs to be positioned, and a work supported by the first long jig at the work positioning position while being separated from and separated from the first long jig. A set of second elongate jigs that can be held and moved in the positioning posture, and the second elongate jig is moved, and the second elongate jig is moved to the first elongate jig. A moving mechanism that can be held at a replacement height position different from the lengthy jig; and a stocker that is arranged close to the work positioning position. The stocker has a plurality of sets of the first and second sets. The long jigs are different from each other at the work positioning position A plurality of storage sites for storing the first and second elongated jigs corresponding to the relative heights of the first and second elongated jigs held at the replacement height position, and exchanging the first and second elongated jigs. Lifting means for raising and lowering the frame provided with the plurality of storage sites.

[Operation] In the above-described work positioning device according to the present invention, since the work is positioned and supported by using at least one set of long jigs, the long jig is not significantly affected by the dimensions of the work. The tool can be made as small and light as possible.

[Example] An example of a work positioning device according to the present invention will be described below in detail with reference to the accompanying drawings.

1 and 2, reference numeral 10 indicates a work positioning apparatus according to an embodiment of the present invention. This device 10
A set of parallel first elongate jigs which are detachable from the fixing table 12 provided at the placement station A and extend in the direction of the arrow X
14 and a plurality of workpieces positioned on the first elongated jig 14, that is, a set of parallel stiffeners 16a to 16c that can be transported to the work station B while holding the stiffener members 16a to 16c in their positioning postures. A second long jig 18;
While the long jig 18 is mounted on the moving mechanism 20, a stocker 22 is arranged in parallel with the moving mechanism 20 and close to the arrangement station A.

A set of support bars 24 extending on the fixed base 12 in the direction of the arrow X
Is fixed, and a plurality of guide rollers 26 are disposed on the support bar 24 so as to be opposed to each other in the vertical direction at a predetermined interval.

The first elongated jig 14 has a rail member 28 supported between a pair of guide rollers 26 provided on a support bar 24, and a locking portion 30 for positioning and supporting the stiffener members 16a to 16c. In addition, a plurality of positioning pins 32 are provided at predetermined positions (see FIG. 3). First long jig 14
Is fixed integrally with the support bar 24 via a lock pin 34, and a locking groove 36 is formed on the other end of the first elongated jig 14.

The moving mechanism 20 includes a pair of rails 40 extending in the arrow X direction.
The rack 42 is arranged between the rails 40, and the movable base 44 is mounted on the rails 40. A motor 46 is fixed to the movable base 44, and a pinion (not shown) connected to the motor 46 meshes with the rack 42. The movable base 44 is provided with a cylinder 50 and a pair of rails so as to sandwich the cylinder 50 and extend in the arrow Y direction orthogonal to the arrow X.
52 is fixed, and a piston rod 50a extending from the cylinder 50 is engaged with a frame 54 that engages with the rail 52.
A set of rails 56 is fixed to the frame 54 so as to extend in the vertical direction, and the elevator 58 that engages with the rails 56 is fixed to a piston rod 60a that extends vertically upward from the cylinder 60 ( (See FIG. 3).

The elevating platform 58 has a pair of support bars 62 inside and parallel to the pair of support bars 24.
A plurality of vertically opposing guide rollers 64 are provided at predetermined intervals. The second long jig 18 is mounted on the support bar 62 via the lock pin 66.

The second elongated jig 18 is provided with a rail member 70 that engages with each guide roller 64 so as to extend in the direction of the arrow X, and supports the stiffener members 16a to 16c at predetermined positions. A locking portion 72 and a positioning pin 74 are provided,
Further, a locking structure 76 is formed on the other end corresponding to the one end with which the lock pin 66 is engaged.

The work station B has stiffener members 16a to 16c.
In order to perform sealing, a sealing device 80 is provided which can be moved up and down in the directions of arrows X and Y.

The stocker 22 has a base 90, and a lift base 96 is fixed to a piston rod 94 extending from a cylinder 92 constituting lift means attached to the base 90 (see FIG. 4).
The elevating base 96 moves up and down along a set of guide rails 98 fixed to the base 90 in a vertical direction,
The frame 99 is supported by the elevating base 96. This frame 99
In addition, the first to sixth storage portions 100a to 100f are sequentially formed in a vertically downward direction.

A plurality of sets of support arms 102a extending in the direction of arrow Y and extending a predetermined distance apart from each other are provided on the upper portion of the frame 99.
And a guide roller 10 that engages with a rail member 70 provided on the second long jig 18.
4 and a pair of support plates 106 that engage with both side portions of the second elongated jig 18 are provided. A locking plate 110 that engages with the locking groove 36 of the second long jig 18 and fixes the second long jig 18 is disposed on the frame body 99.

On the second accommodating portion 100b, a support arm 102b substantially similar to the above-described support arm 102a is provided. The support arm 102b has a guide roller 104, a support plate 106, and a first elongated jig. A guide roller 112 and a support plate 114 that engage with 14 are provided. First and second long jigs 14 and 18 are accommodated in the support arm 102b, and these are integrally fixed by a locking plate 110.

The third accommodating portion 100c to the fifth accommodating portion 100e are provided with support arms 102c to 102e, and these support arms 102c to 102e are configured in the same manner as the support arm 102b described above, Are denoted by the same reference numerals, and detailed description thereof is omitted.

The support arm 102f provided in the sixth accommodation portion 100f includes:
A guide roller 112 and a support plate 114 are provided to accommodate the first elongate jig 14, while a guide roller 104 and a support plate 106 for the second elongate jig 18 are not provided.

As shown in FIG. 2, auxiliary rollers 116a and 116b are provided between the frame body 99 and the placement station A corresponding to the replacement height positions of the first and second long jigs 14 and 18. Is done.

The work positioning device according to the present embodiment is basically configured as described above, and the operation thereof will be described next.

First, the second elongate jig 18 is disposed below the first elongate jig 14 via the elevating platform 58.
A plurality of stiffener members 16a to 16c, which are workpieces, are arranged on 14. Here, the stiffener members 16a to 16c are the first members.
The jig 14 is positioned and held in a predetermined posture via a locking portion 30 and a positioning pin 32 provided on the long jig 14.

Driving the cylinder 60, the piston rod 60a is raised, the lifting platform 58 is raised by the guide action of the rail 56,
The second long jig 18 held by this is displaced upward. The second elongate jig 18 receives the stiffener members 16a to 16c from the first elongate jig 14, holds them in a desired posture via the locking portions 72 and the positioning pins 74, and Upon reaching height, cylinder 60 is deenergized.

Next, the cylinder 50 is driven to move the elevator 58 in the direction of the arrow Y integrally with the frame 54, whereby the stiffener members 16a to 16c transferred from the placement station A to the work station B have sealing devices. The sealer is applied under the driving action of 80.

After the sealing operation, the motor constituting the moving mechanism 20
46 is driven, and the movable base 44 moves along the rail 40 with an arrow X
The stiffener portions 16a to 16c positioned and held by the second elongated jig 18 are transferred to a welding station (not shown), which is the next work position.

Next, when the model of the car body to be assembled is different,
According to the procedure described below, a desired work of exchanging the first long jig 14 and the second long jig 18 is performed.

At the placement station A, the cylinder 60 is driven and the lift 58 is displaced to the rising end (see FIG. 2). Next, the raising / lowering base 96 is raised and lowered under the driving action of the cylinder 92 constituting the stocker 22, and the first accommodating portion 100a is moved to the height position of the second elongated jig 18 positioned at the placement station A. Positioned correspondingly. At the same time, the second accommodation portion 102b is connected to the first elongate jig 14
It is positioned at the same height as.

The lock pin 66 that fixes the second long jig 18 to the up / down 58th is removed, and the second long jig 18
6a and the first storage portion 1 under the guiding action of the guide roller 104.
It is drawn to 00a. Further, the locking plate 110 is engaged with the locking groove 76 of the second long jig 18, and the second long jig 18 is fixed to the first housing portion 100a.

On the other hand, the lock pin 34 that fixes the first elongated jig 14 to the fixing base 12 is removed, and the first elongated jig 14 acts to guide the auxiliary roller 116b and the guide rollers 112 and the support plate 114. Below, it is housed in the second housing member 100b,
Is engaged with the locking structure 36 to fix the first elongated jig 14.

Under the driving action of the cylinder 92, the elevating base 96 is displaced in the vertical direction, and the desired first long jig 14 and second elongate jig 18 are respectively moved to the predetermined positions of the fixed base 12 and the elevating base 58. It is positioned at the height position. Then, after the locking plate 110 is removed and the desired first elongated jig 14 is drawn into the support bar 24 under the guide action of the rail member 28 and the guide roller 26, it is fixed by the lock pin 34. . The desired second long jig 18 is similarly drawn into the support bar 62 under the guide action of the guide roller 64 provided on the support bar 62 of the elevating platform 58, and is fixed by the lock pin 66. .

In this case, in the present embodiment, the stiffener members 16a to 16c
And a second long jig 18 for transferring the stiffener members 16a to 16c thus positioned from the placement station A to the work station B and other stations. And For this reason, it is not necessary to use a large jig as in the related art to position a relatively large work like the stiffener members 16a to 16c.

In particular, one set of the first long jig 14 and the second long jig
In the case where a plurality of the first and second long jigs 14 and 18 are provided in order to assemble different types of vehicle bodies so that the entire jig can be reduced in size and weight as much as possible, as shown in FIG. However, the size of the stocker 22 that accommodates them does not increase. In addition, since the long jigs 14 and 18 can be reduced in weight, an effect that the handling properties of the long jigs 14 and 18 are improved at once can be obtained.

Thereby, the plurality of first and second elongated jigs 14,
It is possible to effectively arrange the 18 in a small space, and to provide the work positioning device 10 excellent in workability.

In the present embodiment, the first and second long jigs 14,
Although the jigs 18 are arranged in parallel with each other, the long jigs 14 and 18 may be provided obliquely with respect to each other according to the shape of the work.

[Effects of the Invention] The work positioning device according to the present invention configured as described above has the following effects and advantages.

In order to position and hold the work with at least one set of long jigs, even if this work is large,
The long jig itself can be reduced in size and weight as much as possible. Therefore, even when a plurality of long jigs are provided, it is possible to effectively reduce the size of the stocker for accommodating the long jigs, and the handling operability of these long jigs is all at once. To improve.

[Brief description of the drawings]

1 is a schematic perspective view of a work positioning apparatus according to the present invention, FIG. 2 is a front view of the apparatus, FIG. 3 is a partial side view of the apparatus, and FIG. 4 is an enlarged view of a stocker constituting the apparatus. It is a top view. 10 ... Device 14 ... Long jig 16a-16c ... Stiffener 18 ... Long jig 20 ... Movement mechanism 22 ... Stocker 24 ... Support bar 58 ... Elevating table 62 ... Support Bar 96 …… Elevation base 100a ～ 100f …… Storage area

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-64-22720 (JP, A) JP-A-63-140330 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B23P 19/00 304 B23P 21/00 303 B23Q 3/02 B23K 37/04

Claims (1)

(57) [Claims] An apparatus for positioning and holding one or more workpieces, comprising: a set of first elongated jigs for positioning the workpieces by placing the workpieces at the workpiece positioning position; 1 While separating from the long jig,
A set of second elongate jigs, which is movable while holding the work supported by the first elongate jig at the work positioning position while maintaining the positioning posture, the second elongate jig; A moving mechanism for moving the jig and holding the second elongate jig at a replacement height position different from that of the first elongate jig, and disposed in proximity to the work positioning position. And a stocker, wherein the stocker holds the plurality of sets of the first and second long jigs at different heights for replacement at the work positioning position. A plurality of storage portions for storing the jigs corresponding to the relative height of the jigs; and an elevating device for elevating and lowering the frame provided with the plurality of storage portions for exchanging the first and second long jigs. A work positioning device comprising: