JPH0442252Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a steady rest device for a hanger suspended on an overhead conveyor.

(Prior art) As a means of conveying workpieces from the upper floor to the lower floor or from the lower floor to the upper floor, an inclined conveyor having a workpiece placement section adapted to the inclination or an elevator-type conveyor that ascends and descends vertically is used. However, the former type has restrictions on the angle of inclination due to the space occupied by the workpiece, making it unsuitable for use in narrow spaces.
The latter method also has the disadvantage of requiring a separate transfer device.

On the other hand, overhead conveyors with hanging hangers are superior in that they can convey workpieces continuously and are relatively free from space constraints. This has the disadvantage that the workpieces may swing and come into contact with each other or with other objects placed near the conveyor.

(Purpose) The present invention was developed in view of these inconveniences, and its purpose is to constantly hold the workpiece in a stable position and lift it without being affected by conveyor vibrations, etc. An object of the present invention is to provide a new steady rest device that can be lowered.

(Means for Achieving the Object) That is, the present invention is a steady rest device for use in an overhead conveyor in order to achieve the above object. For a traveling body traveling along a guideway having a curved path, a part of the work support is restrained on the horizontal travel path of the guideway, and the work support is restrained on travel paths other than the horizontal travel path. a locking member that operates to release the locking member;
An adjustable braking member is disposed in sliding contact with a drum member provided at a pivot point of the workpiece support to suppress rocking of the workpiece support.

(Example) The details of the present invention will be explained below based on the illustrated example.

Each of the drawings shows an embodiment of the present invention, and as shown in Figs. 1 and 2, the guideway, that is, the free rail 4, which is arranged parallel to the running power rail 3 of the chain 1, includes: Several free trolleys 5 rolling along this inner bottom surface and inner surface
A running body, that is, a carrier 7, is mounted so as to be able to run through a guide roller 6 and a guide roller 6, and is integrated with the chain 1 by engaging a dog 8 protruding from the upper end of the carrier 7 with a hole 2 provided in the chain 1. It is configured to run on a regular basis. A rod-shaped hanger bracket 10 is rigidly fixed to the lower part of the carrier 7, and a workpiece support, that is, a hanger 21 to be described later, is pivotably pivoted to a horizontal pin, that is, a fulcrum pin 11, inserted through the lower end of the carrier 7. A pin 25 is inserted horizontally into the bracket 13 that is supported and fixed directly above the bracket 13, and a hanger 21 is inserted therein.
A locking member that engages with and disengages from a recess 23 provided in the positioning plate 22 at the upper end, that is, a bell crank type locking lever 15 is rotatably attached. This locking lever 15 is always biased in the direction of engaging with the above-mentioned recess 23 by a spring 18 stretched between it and the hanger bracket 10, and in this state, the tip of the arm 16 extending upward is A roller 17 is provided, and when it comes into contact with a protrusion 38 (Fig. 5) fixed at the starting point of the free rail 4, a depression 2 is created.
It is configured to rotate in a direction away from 3.

On the other hand, the hanger 21 is swingably supported by inserting a fulcrum pin 11 at the lower end of the hanger bracket 10 into a positioning plate 22 and a brake drum support plate 24 which are provided upright at its upper end. As shown in FIGS. 3 and 4, a drum member, that is, a brake drum 26, centered on the fulcrum pin 11 is integrally attached to the outer surface of the drum support plate 24 with screws 27.

The cover plate 12 fixed to the hanger bracket 10 so as to cover the open end side of the brake drum 26 has a pin 28 erected at an eccentric position of the brake drum 26. The braking members that slide on the inner peripheral surface of the drum 26, that is, the two arcuate brake shoes 29, 29, are normally expanded in an inwardly biased state by a spring 30 stretched between them. The other ends of these are pivoted to be openable, and the other ends of these abut the surface of the cam 32 on the camshaft 31 that is pivotally supported on the other side of the cover plate 12, and slide against the inner peripheral surface of the brake drum 26, thereby forming a hanger. It is configured to suppress the swinging of 21.

On the other hand, one end of a bolt 35 is supported by a bracket 34 fixed to one side of the outer surface of the cover plate 12, and the other end of an arm 37, one end of which is fixed to the camshaft 31 described above, is supported at the other end. is inserted through the adjustment nut 36 and screwed onto the other end of the bolt 35.
The brake shoes 29, 29 are configured to swing about the cam shaft 31 by rotating the brake shoes 29, and the amount of expansion of the brake shoes 29, 29 described above is adjusted by the amount of the swing via the cam 32.

In the figure, reference numerals 19 and 20 indicate stoppers for restricting rotation of the locking lever 15.

In the device configured in this manner, while the carrier 7 is running on the horizontal free rail 4, the hanger bracket 10 extends directly below the carrier 7, as seen in FIG. The positioning plate 22 at the upper end almost overlaps with this, and one end of a locking lever 15 provided on the hanger bracket 10 is engaged with a recess 23 at the upper end. For this reason, the hanger 21 is held immovably at the lower end of the carrier 7, and the work of assembling the work w supported thereon can be performed without any trouble.

When the work on the upper floor is finished and the carrier 7 reaches the lowering start point A of the free rail 4 in order to lower the work w to the lower floor, the locking lever 15 comes into contact with the protrusion 38 on the free rail 4. The positioning plate 22 is rotated clockwise in the figure against the spring 18 to release the locked positioning plate 22. Under this condition, when the carrier 7 continues to travel and reaches the curved part B of the free rail 4, the hanger bracket 10, which has tilted as the carrier 7 tilts, is joined to the hanger 21, which is in a hanging position due to its own weight. An angular deviation occurs between the two, and this angular deviation becomes maximum as the free rail 7 faces directly below.

The angle difference between the two is caused by the brake drum 26 on the hanger 21 side and the hanger bracket 1.
This appears as a relative movement between the brake shoes 29, 29 on the 0 side, but as described above, the pressure contact force between the brake shoes 29, 29 and the brake drum 26 is caused by the arm on the camshaft 31. 37 is adjusted according to the weight of the workpiece w by adjusting the adjusting nut 36, so even if the carrier 7 gradually changes its angle while traveling along the curved part of the free rail 4, the hanger 21 Brake show 2
Under the braking action of 9 and 29, it descends while maintaining a stable hanging posture without swinging.

Although not shown, when the carrier 7 descends to the lower floor and moves again to the horizontal running path of the free rail 4, one end of the locking lever 15 slides into contact with the upper surface of the positioning plate 22 and recesses 23. The hanger 21 is stably supported by engaging with the hanger 21.

Although the operation of the present invention has been explained above using the operation of traveling from the upper floor to the lower floor, the same operation also ensures that the swinging of the hanger that occurs during the travel from the lower floor to the upper floor is prevented. to prevent.

(Effects) As described above, according to the present invention, a part of the workpiece support is restrained on the traveling body traveling along the guideway on the horizontal travel path, and the part of the work support is restrained on the other travel paths. Since we have provided an adjustable braking member that slides into contact with the drum member provided on the workpiece support, there is no need to use anti-sway rails when traveling horizontally to perform work such as assembling parts.
A part of the workpiece support body is restrained by a locking member provided on the traveling body itself to reliably suppress its shaking, and when traveling on a curved road, the brake member is used instead of restraint by the locking member. By using power, it is possible to give a certain degree of freedom to the workpiece support without applying unreasonable force to it, and it is possible to move the workpieces smoothly while preventing contact between the workpieces or between the workpieces and other objects. .

[Brief explanation of the drawing]

Fig. 1 is a side view of a device showing an embodiment of the present invention, Fig. 2 is a front view of the same device, Figs.
The figure shows an enlarged side view and front view of the main parts.
FIG. 5 is a diagram showing the running state. 1...Chain, 4...Free rail, 7...
Carrier, 10... Hanger bracket, 15...
...Latching lever, 21...Hanger, 22...Positioning plate, 23...Dent, 26...Brake drum, 29...Brake shoe, 35...Adjustment bolt, 36...Adjustment nut.

Claims (1)

[Scope of Claim for Utility Model Registration] A horizontal traveling path in which a workpiece support, which always maintains a constant posture due to its own weight, is pivotally supported by one horizontal pin that runs perpendicular to the direction of travel, and connected via a curved path; A traveling body traveling along a guideway consisting of a vertical traveling path is provided with a part of the work support body being restrained in the horizontal traveling path, and a part of the work support body being restrained in a portion continuing from the horizontal traveling path to the curved path. A locking member that comes into contact with a protrusion provided on a portion of the workpiece support and is displaced to release the workpiece support; and a drum member provided at a pivot point of the workpiece support that makes sliding contact with the drum member that causes the workpiece support to swing. 1. A hanger steadying device for an overhead conveyor, characterized by having an adjustable braking member for suppressing the load.