JPH0613783Y2 - Pallet for assembly work - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a pallet for assembly work capable of positioning and supporting workpieces regardless of their models.

(Prior Art) In an assembly work section for assembling parts such as a crankshaft, a flywheel or an oil pan to an engine block, the engine block is usually placed and transported using a pallet having positioning pins. However, the number of engine blocks sent to the assembly work department is not always one type, and sometimes several models are available.Therefore, in order to support this, it is necessary to prepare several positioning pins matching the model on the pallet. This not only makes the pallet unnecessarily complicated or large, but also makes it difficult to automate the assembly because the support position of the engine block differs depending on the model.

On the other hand, in the jig disclosed in Japanese Patent Laid-Open No. 56-525, a plurality of rotating arms are provided on the front, rear, left and right sides of the table, and a plurality of positioning pins are erected on the upper surfaces of these to support the work to be supported. It is possible to position and support several types of workpieces by locating the positioning pin corresponding to the above at a predetermined position and at the same time positioning other positioning pins outside the occupied space of the workpiece. In the jig, the rotating arm must be arranged so as to overhang to the outside of the work, which causes the jig or pallet to become larger than necessary and hinder the assembly work. The problem arises.

(Problems to be solved by the invention) The present invention has been made in view of such a problem, and an object of the invention is to make it possible to accurately position and support them according to the model of the work. Another object is to provide a miniaturized assembly work pallet.

(Means for Solving the Problem) That is, according to the present invention, as an assembling work pallet for achieving such a problem, a plurality of shafts inclined outwardly from each other are erected on the outer peripheral portion of a work mounting table provided in the pallet body. A disk-shaped supporting member is rotatably attached to each of these shafts so that it can be positioned and locked at a constant angle in a tilted state, and these supporting members are made to correspond to each work model. When a plurality of work positioning members are arranged at intervals of the above angle and the work positioning member corresponding to the work to be supported is positioned at the uppermost position of the support member forming the work supporting position, other work positioning is performed. The member is located at a lower position of the support member and below the work in a supported state.

(Example) Then, the Example illustrated below is described.

1 to 3 show an embodiment of the present invention. In the drawings, reference numeral 1 is a pallet body, and a bush 3 is rotatably attached to the center of the pallet through a bearing 2. Further, at a point equidistant from the bush 3, several thrust bearings 4 ... Which rotatably support a work mounting table 5 described later are embedded.

The work mounting table 5 is rotatably mounted on the thrust bearings 4 ... As shown in FIG.
A pallet body is formed by fitting a shaft 6 with a collar projecting downward from the central portion of the lower surface into a hole 3a of the bush 3 and screwing bolts 7 ... 1 is mounted on.

This work mounting table 5 is provided with four locking holes 8 on the lower surface at 90 ° intervals at points equidistant from the flanged shaft 6, and the pallet body 1 is parallel to the surface thereof. A lever 10 that can swing up and down with the embedded pin 9 as a fulcrum is urged by a spring 11 so as to constantly project the locking projection 12 onto the upper surface of the pallet body 1.
By engaging the selected one locking hole 8,
The work placing table 5 is always positioned and held on the pallet body 1 in a desired direction, and the operator 13 provided at the tip of the lever 10 is pushed down to engage the engagement protrusion 12 with the engagement hole 8. It is configured so that the workpiece mounting table 5 can be turned by unlocking.

On the other hand, 15 ... Support discs capable of positioning and holding different engine blocks W for each model. These support discs 15 ... It is pivotally supported by each of the four shafts 16 ... Each of these shafts 16 is formed as a tilted head 17 by slightly bending a portion projecting from the upper surface of the work mounting table 5 outward from the center of the mounting table 5 and thus forming each tilted head 17. The four support disks 15 pivotally supported by 17 are all mounted on the work mounting table 5.
The part near the center is high and the peripheral part is low. The engaging holes 1 provided at 90 ° intervals at points equidistant from the centers of these circular plates 15 ...
8 is configured to engage one engagement pin 20 on the work mounting table 5 to which an upward biasing force is applied by a spring 19, and the engagement pin 20 is inserted into the engagement hole 18. It is constructed so that it can be removed by a push button 21 that is slidably fitted, so that the discs 15 can be positioned by appropriately changing the angle by 90 °. .

Further, on the upper surface of each of the support circular plates 15, there are positioning holes a which differ depending on the model of the engine block w to be supported.
And a maximum of four positioning pins 23a, 23b and receiving seats 24a, 24b (two in this embodiment so as to correspond to two kinds of works w) positioned so as to match the contact position b, respectively. The pins 23a and 23b and the seats 24 are fixed at 90 ° intervals.
a and 24b are one of the highest position of the support disk 15, that is, a position near the center where the engine block w can be supported, and the other is a low position of the disk 15, that is, a position away from the center. Of the engine block w and is not in contact with the bottom surface of the engine block w.

In the figure, reference numeral 26 is an index on the work placement table 5 that serves as a guide for positioning the disc 15, 27 is a flag for detecting a model provided in a part of the pallet body 1, 28 is another pallet body 1. Each shock absorber is shown to prevent interference.

In the apparatus configured as described above, when the model of the engine block w to be assembled is determined, first, the operator 13 is pushed down to disengage the locking projection 12 locked in the locking hole 8. The mounting table 5 is set in the longitudinal direction. Then, the push button 21 on each support disk 15 is pushed to disengage the engagement hole 18 from the engagement pin 20, and then the positioning hole a of the engine block w to be supported is abutted. Each positioning pin 23a and receiving seat 24a corresponding to the contact position b
.. are swung in accordance with the index 26 so that is located at the highest position of the disk 15, that is, at a point near the center.

As a result, the other positioning pins 23b and the receiving seats 24b are moved to the lower positions of the disc 15 and the engine block w.
Since it occupies a position where it does not come into contact with the bottom surface of the engine, the engine block w is then set on the work transfer table 5 by a transfer machine (not shown), and in this state, the engine components such as the crankshaft, oil pan or flywheel are assembled. Go on.

If the model is changed, the pallet body 1 is moved by moving the other positioning pin 23b and the receiving seat 24b to the uppermost position of the support disk 15 by the same operation as above.
Can be promptly dealt with by the newly sent engine block w.

In the above-described embodiment, the shaft 16 having a bent tip is used as a means for mounting the supporting disc 15 by inclining it. However, the straight shaft is obliquely fixed to the work mounting table 5 and the supporting disc 15 is attached thereto. You may make it attach 15.

(Effect) As described above, according to the present invention, a plurality of shafts inclined outward are erected on the outer peripheral portion of the work transfer table on the pallet body, and a plurality of shafts which can be locked at a constant angle are fixed to these shafts. When the support members are mounted in a tilted state, a plurality of work positioning members corresponding to each work model are arranged on each of these top surfaces, and one of these is located at the top of the support members that form the work support area. Since the rest are located at the lower position of the support member and below the work, the pallet can be quickly supported according to the model of the work by simply rotating and positioning the support member on the work mounting table. Not only can it be made possible, but by arranging the support member without protruding to the outside of the work, the pallet can be made as small as possible and the workability in assembly can be greatly improved. And more Can correctly position and support the work regardless of whether the position of the positioning hole or the like on the work is inside or outside, without being restricted by other work positioning members.

[Brief description of drawings]

FIG. 1 is a side view of a pallet showing an embodiment of the present invention, and FIGS. 2 and 3 are a top view and a front view of the same pallet. 1 ... Pallet body, 5 ... Work placement table 15 ... Support disk, 16 ... Shaft 23 ... Positioning pin, 24 ... Receiving plate 45 ... Support cylinder

Claims (1)

[Scope of utility model registration request] 1. A plurality of shafts, which are inclined outwardly from each other, are provided upright on the outer peripheral portion of a work mounting table provided in a pallet body, and a disk-shaped support member is inclined to each of the shafts at regular intervals. It is attached so that it can be positioned and locked to
A plurality of work positioning members corresponding to each work model are arranged on the support member at intervals of the above angle,
When the work positioning member corresponding to the work to be supported is positioned at the uppermost position of the support member forming the support position of the work, the other work positioning members are located at the lower position of the support member and are in the supported state. A pallet for assembly work characterized in that it is positioned below.