JPS6110917Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a positioning device for a workpiece or pallet (hereinafter simply referred to as a workpiece, etc.) carried into a jig main body, and is an evacuation device that does not interfere with the workpiece, etc., being transferred along a conveyance path. The objective is to allow the stopper member and the pressing member to escape into position, and to position the work by clamping the workpiece in both directions along the conveyance direction, and to achieve such retracting and pressing operations with a single cylinder. shall be.

The positioning devices used in conventional dedicated machine tools are generally of the dowel type, in which a dowel pin guided so as to be able to rise and fall at the bottom of the jig body is inserted into a reference hole drilled in the workpiece, etc., for positioning. I was gone. Since such a knock pin moves forward and backward in a direction perpendicular to the transport direction of the workpiece, etc., by retracting the knock pin, the workpiece etc. can be moved to a position where it will not interfere with the transport of the workpiece, etc. However, such a dowel pin must maintain a constant posture of the workpiece, etc., and in cases where setup changes are required to change the posture of the workpiece carried into the jig, the dowel pin must be adjusted to match the posture of the workpiece etc. It is also necessary to change the sliding direction, which not only complicates the configuration but also makes setup changes difficult.

In view of this point, the present invention is designed so that even if the posture of the workpiece changes, the positioning device does not require setup change work, and the stopper member and the pressing member that engage with both ends of the workpiece, etc. The stopper member and the pressing member are pressed from both directions along the conveyance direction to effect positioning, and when the workpiece is conveyed, the stopper member and the pressing member are retracted to a position where they do not interfere with the workpiece or the like.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, 10 is a jig body installed at the processing position of a dedicated machine tool, and this jig body 10
In this process, a pallet P on which a workpiece W is placed and fixed is carried in along the guide rail 11, and after being positioned by a positioning device 30 (to be described later), a cylindrical reference surface 12 fixed to both side ends of the pallet P is placed. A clamp device 1 that presses and clamps a reference member 13 having
Clamp at 5 and 16. A machining unit (not shown) is disposed on the jig main body 10, and is configured to perform required machining on a workpiece W positioned and clamped via a pallet P. A pallet P on which a certain kind of workpiece W is placed
is maintained in the posture shown by the solid line while machining is performed, but the pallet P' on which other workpieces are placed is 2
The posture is changed to that shown by the dotted chain line. Such a change in attitude can be achieved by changing the setup of the reference member 13 by replacing the support blocks 17 and 18 on the jig main body side shown in solid lines with the support blocks 17', 18'. Along with this, the guide rail 11 that acts as a guide for loading and unloading pallets is also
The guide rail 11' is replaced by a guide rail 11' shown by a dashed dotted line, and the abutment metal 19 in one clamp device 16 is also replaced by an abutment metal 19' shown by a two-dot chain line. Each clamping device 15, 16 has the support block 17, 1
Clamp members 20 and 21 are provided to press the reference member 13 against the support surface of the pallet P, and drive cylinders that operate the clamp members 20 and 21 in the direction of the arrow are connected to each of the clamp members 20 and 21. Perform clamping.

Palettes P or
A positioning device 30 having a stopper member 31 and a pressing member 32 that engage with the end face of one reference member 13 of P' is provided on one side wall of the jig main body 10, and its configuration is shown in FIG.

The stopper member 31 has a substantially L-shape that is rotatably attached to a bracket 33 protruding from the left end of the jig main body by a pivot 34, and one end extends substantially parallel to the pallet conveying direction. An abutment metal 35 that comes into contact with the positioning reference end surface 13a of the reference member 13 is fixed to its tip surface. As shown in FIG. 1, this abutment metal 35 has a width large enough to engage with either of the reference members 13, 13' which are displaced as the posture of the pallet P changes. An engaging member 38 is provided at the other end and has an arcuate surface 37 that engages with an engaging step 36a of an actuating rod 36, which will be described later. The jig main body 1 is located near the engaging element 38.
An engagement block 40 that abuts against a rotation end regulating member 39 that protrudes from the 0 is fixed.

The pressing member 32 has parallel links 42 and 43 attached to a support bracket 41 protruding from the right end of the jig main body 10.
The parallel links 42 and 43 provide a combined movement in the direction approaching the pallet and in the direction parallel to the conveyance direction. One link 43 of the parallel links 42 and 43 has the engagement groove 3 of the actuating rod 36.
An engaging element 45 having an arcuate surface 44 that engages with 6b is provided in a protruding manner. The operating rod 36 is connected to the jig main body 10
A small diameter rod 46 and an engaging stepped portion 36a are formed at the end of the stopper member 31 side. A nut 47 is fixed to the tip of the small diameter rod 46,
This nut 47 and the engager 38 of the stopper member 31
A spring 48 is compressed and inserted between the two.
A washer 49 is inserted on the engaging element 38 side and supports one end of the spring 48. An engagement groove 3 is provided at the end of the actuating rod 36 on the side of the pressing member 32.
An engaging element 45 having an engraved numeral 6b and protruding from one end of the link 43 engages with the piston rod 51 of the cylinder 50, which is fixed to the end of the support bracket 41.
is connected to. In the figure, 17 is a support block, 20 is a clamp member, 25 is a piston rod of a cylinder 26 connected to the clamp member 20, 13 is a reference member fixed to one end of the pallet P, and a stopper member of this reference member 13. The side end surface serves as a positioning reference member 13a, and the pressing member 32 is brought into contact with the opposite end surface 13b.

The solid line state shown in FIG. 2 shows the positioning completed state in which the actuating rod 36 is located at the rightward end, but when the actuating rod 36 is returned to the leftward end indicated by the two-dot chain line, the engagement step portion 36a becomes the stopper. It engages with the engaging member 38 of the member 31, rotates the stopper member 31 clockwise, and releases the abutment metal 35 to a position where it does not interfere with the pallet P. Along with this, the engaging element 4 of the parallel link 43
5 is also oscillated clockwise, so that the pressing member 3
The pallet P is conveyed by releasing the pallet 2 to the two-dot chain line state.
will not interfere with The state indicated by the two-dot chain line is the original position state, in which pallets are carried in and out along the guide rail 11, and the carried pallets are temporarily positioned by means not shown. This causes the cylinder 50 to actuate and the actuating rod 36
When moved to the right, the stopper member 31 is rotated counterclockwise by the pressing force of the spring 48, and the engagement block 40 comes into contact with the regulating member 39, so that the end of rotation is regulated. As a result, the spring 48 is compressed and the actuating rod 36 continues to move to the right, the pressing member 32 presses the end surface 13b of the reference member 13, and the stopper member 3
1 until it comes into contact with the reference end surface 13a.
The pressing force of the pressing member 32 acts on the abutment metal 35 of the stopper member 31 via the pallet P, but this pressing force becomes a moment in the direction of pressing the engagement block 40 against the regulating member 39, so that the pressing force of the stopper member 31 is The position is accurately regulated and the pallet can be positioned correctly.

In this way, according to the present invention, one cylinder 50
By simply moving the actuating rod 36 forward and backward, the paired stopper member 31 and pressing member 32 can be moved in and out of the engaging position or non-engaging position with the pallet P. Moreover, the pallet can be moved from both directions along the pallet transport direction. Since the pallet can be accurately positioned by clamping the pallet, it has the advantage that even if the posture of the pallet is changed due to a change in the workpiece, there is no need to change the setup of the positioning device, and the configuration is simple. This has the effect of reducing costs.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a view of the jig main body seen from one side, and FIG. 2 is a cross-sectional view taken along the line - in FIG. 1. 10... Jig body, 11... Guide rail, P
...Pallet, 13...Reference member, 15, 16...
... Clamp device, 17, 18 ... Support block,
20, 21...Clamp member, 31...Stopper member, 32...Press member, 35...Abutment metal, 36
...Operating rod, 36a...Engagement step, 36b...
...Engagement groove, 39...Rotation end regulating member, 40...Engagement block, 42, 43...Parallel link, 50...
...Cylinder, W...Work.

Claims (1)

[Scope of utility model registration request] A positioning device for a workpiece or pallet carried into a jig main body along a conveyance path, in which a substantially L-shaped stopper member at one side end of the jig main body is rotatable in a plane parallel to the conveyance path. At the same time, a pressing member is pivotally connected to the other end of the jig main body via a parallel link so as to be able to swing while maintaining a state parallel to the conveyance path.
An actuation rod is mounted so as to penetrate through the jig main body and slide in parallel to the conveyance path, and an engaging element that removably engages with an engagement step provided at one end of the actuation rod is attached to the stopper member. A spring is provided at the tip of the actuating rod to protrude from the actuating rod and press the engaging element toward the engaging step, and the engaging element is engaged with an engaging groove provided at the other end of the actuating rod. A jig includes a rotation end regulating member which is protruded from one side of the parallel link, has a cylinder connected to the actuating rod to make it slide, and engages with the stopper member to regulate the rotation end position in the spring pressing direction. The pressing member presses the workpiece or pallet against a stopper member which protrudes from the main body and whose rotational displacement is restricted by engagement with the rotational end regulating member when the cylinder moves in one direction. What is claimed is: 1. A positioning device characterized in that the positioning device is configured to perform positioning, release the positioning pressing action by movement in the other direction, and rotate and retreat the stopper member and the pressing member from the conveyance path.