JPH0130363Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a conveying pallet used in an automatic assembly line in a factory, and particularly relates to an improvement of the work positioning mechanism.

(b) Prior Art In the automation of assembly lines using automatic machines, flexible robots, etc., positioning of workpieces on transport pallets becomes a very important point. Furthermore, as workpieces become increasingly diverse these days, flexible positioning is desired.

According to the knowledge of the present inventors, for example, as a positioning element on a pallet corresponding to works of various shapes, a method of installing a guide base b corresponding to a workpiece a as shown in FIG. As shown in the figure, the part d that fits between the workpiece a and the pallet c
There may be a way to set it up. However, the former method requires many guide bases b corresponding to various types of workpieces a, which requires a great deal of expense for their production, management, and setting work, while the latter method requires a fitting part d to be attached to the workpiece a. This is not a preferable method because it imposes design constraints and has implications for the design and cost of the product.

Furthermore, as shown in FIG. 8, a large number of hole-shaped positioning receiving parts e are opened on the pallet c, and four guide blocks f each having a shaft-like engaging part that fit into the receiving parts e are placed on the pallet. It is conceivable that the block f be detachably placed on the block f and support the corner of the workpiece a.

That is, the positioning engagement portion of the guide block f and the receiving portion e of the pallet c are adjusted according to the size of the workpiece a.
This provides versatility by shifting the engagement position of the

However, in the case of the above palette c, blocks f,
Adjustment of the distance between f is limited to each pitch p of the positioning receiving part e, and cannot be adjusted for a length shorter than the pitch length of the receiving part e. This is because if the type of workpiece a is different, the clearance between the workpiece a and the guide block f becomes large, which causes a problem that the workpiece a shakes on the pallet c.

(c) Problems to be solved by the invention This invention does not require multiple types of guide bases, does not require fitting parts on the workpiece, and does not cause wobbling no matter what size the workpiece is. The present invention provides a pallet for transporting workpieces that can be fixed at a predetermined position on the pallet without any trouble, and furthermore, has a simple structure that improves workability, manufacturability, and
The present invention provides a pallet for transporting workpieces with excellent maintainability.

(d) Means for solving the problem The pallet for conveying workpieces of this invention has a fixed shaft, an arm shaft attached to the fixed shaft, a guide plate attached to the arm shaft, and a guide plate on the pallet. It is equipped with a guide member for corner positioning and height positioning that is attached to the plate.The more detailed structure consists of a pallet body and a workpiece positioning mechanism provided on the pallet body, and is used for workpiece conveyance used in automated lines. In this pallet, the above-mentioned workpiece positioning mechanism consists of two fixed shafts provided vertically parallel to each other on both sides of the upper surface of the pallet body, and two bases that are slidably attached to each fixed shaft and fixed. An armshaft that moves in parallel at a position perpendicular to the shaft and between the respective fixed shafts, a guide plate that is slidably and removably attached to each armshaft, and a workpiece corner provided on this guide plate. This is a pallet for transporting workpieces, which includes a guide member for positioning and a guide member for height positioning of the workpieces.

(E) Function The corner of the workpiece is fixed at a desired horizontal position by the corner positioning guide member whose position is variable as the arm shaft and guide plate move, and by the height positioning guide member. is fixed at the desired height.

(f) Examples Examples of this invention will be described below with reference to the drawings, but this invention is not limited to the following examples.

Figures 1, 2, and 3 respectively show the plan, front, and side shapes of this invention.
and a positioning mechanism for the workpiece 3 (indicated by dotted lines) provided above. The positioning mechanism will be described in detail below. Reference numeral 4 denotes fixed shafts, two of which are fixed in parallel in the vertical direction on both sides of the upper surface of the pallet body 2, with the upper and lower ends being fixed by screws 5. Four fixed shaft sliders 6 are attached to the fixed shaft 4 so that the fixed shaft 4 is inserted therethrough, and each of the fixed shaft sliders 6 is integrally provided with an arm shaft 7. This arm shaft 7 is located perpendicularly to the fixed shaft 4, and moves horizontally in parallel on the pallet body 2 between both fixed shafts 4 as the fixed shaft slider 6 slides. The fixed shaft slider 6 constitutes the base of the arm shaft 7. This armshaft 7
Four armshaft sliders 9 are attached to each of the sliders 9, each of which has a guide plate 8 integrally inserted into the armshaft 7. Each of the guide plates 8 is provided with two guide pins 10 that serve as guide members for corner positioning of the workpiece 3, and a level pad guide pin 11 and a level pad 12 that serve as guide members for height positioning. . Therefore, by the sliding movement of the fixed shaft slider 6 and the sliding movement of the arm shaft slider 9, each guide plate 8 can be freely moved in the XY directions shown in the figure, and as a result, the guide plate 8 can be moved to an appropriate position within its movement range. The fixed shaft slider 6 and the arm shaft slider 9 can be fixed to the respective shafts 4 and 7 with fixing bolts 13 and 14 at that position. Therefore, the guide plate 8 is arranged and fixed according to the dimensions of the workpiece 3, and the guide pin 10 of the guide plate 8 is
The corner of the workpiece 3 is positioned by the following steps. The actual positioning of the guide plate 8 can be done by providing scales on the fixed shaft 4 and arm shaft 7 and moving the respective sliders 6 and 9 according to the scales, or by using a separate jig. Use this tool to align the guide plate 8 with this jig.

4 and 5 show the plane and side shapes of the positioning part of the workpiece. The level pad 12 is attached to the level pad guide pin 11, and the level pad 12 is adjusted to its height (a in the figure).
Indicated by ) is used to adjust and determine the height position of the workpiece by replacing it with the appropriate one. Other possible height positioning guide members include one using a spacer and one in which a level pad is screwed into a level pad guide pin so that the height can be adjusted.

The guide plate 8 is detachably attached to the arm shaft 7. By removing the guide plate 8 and positioning the arm shaft 7 at each corner of the pallet body 2, the pallet body 2 can be moved to its center. section is used as a conventional flat plate pallet. Furthermore, if the arm shaft 7 is configured to be detachable from the fixed shaft 4, the upper part of the pallet element body 2 can be used more widely as a flat plate pallet.

(g) Effects of the invention This invention has the above-described configuration, and the corner of the workpiece can be moved to a desired position by a corner positioning guide member whose position is variable as the arm shaft and guide plate move. Can be fixed in horizontal position,
In addition, since it can be fixed at a desired height using the guide member for height positioning, the same pallet can flexibly handle workpieces of different sizes, and by removing the guide plate, it can be used almost like a conventional flat pallet. Further positioning,
It is easy to release, adjust, and fix for setting, making it very convenient to work with, and having a simple structure, it is extremely advantageous in terms of manufacturing and maintenance.

In particular, it is possible to stably position and fix workpieces such as trapezoids.

[Brief explanation of the drawing]

Figures 1, 2, and 3 are respectively a plan view, a front view, and a side view of an embodiment of this invention, and Figures 4 and 5 are an enlarged plan view of the same main part and an enlarged front view of the same main part. , FIG. 6, and FIG. 7 are perspective views showing different conventional examples, and FIG. 8 is a plan view showing a further different conventional example. 1... Pallet for transporting work, 2... Pallet body, 3... Work, 4... Fixed shaft, 6...
...Fixed shaft slider, 7...Arm shaft, 8...Guide plate, 9...Arm shaft slider.

Claims (1)

[Claims for Utility Model Registration] 1. In a pallet for transporting workpieces used in an automated line, which consists of a pallet body and a workpiece positioning mechanism provided on the pallet body, the workpiece positioning mechanism is located on the upper surface of the pallet body. Two fixed shafts are provided vertically in parallel at both sides, and two slidable bases are attached to each of these fixed shafts, and the bases are movable in parallel at positions perpendicular to the fixed shafts and between the fixed shafts. an arm shaft, a guide plate slidably and removably attached to each arm shaft, and a guide member provided on the guide plate for positioning the corners of the workpiece and a guide member for positioning the height of the workpiece. A pallet for transporting workpieces in which the guide member for corner positioning consists of two guide pins. 2. The pallet for transporting workpieces according to claim 1, wherein the guide member for height positioning of the workpieces comprises a level pad guide pin and a level pad for height adjustment attached to the level pad guide pin.