JPS6126259Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is designed to
The present invention relates to a device for conveying speakers mounted in an inverted cone posture on pallets arranged in the conveyance direction of a conveyance chain, and the purpose is to miniaturize the entire device.

Conventionally, as shown in FIG. 1, since the pallet 1 is rectangular in plan view, as shown in FIG. In order to prevent the pallets 1 from being pushed and falling, the sprocket 3 was made large in diameter as shown in FIG. 3, and a large distance 4 was left between the pallets 1.

For this reason, the height of each stage of the horizontal conveyor path
Since _H1 increases in proportion to the diameter of the sprocket 3, and the total length of the conveyance path increases in proportion to the size of the interval 4, the entire device becomes large.

The present invention eliminates these drawbacks and makes the entire device much more compact.
As shown in FIG. 5, a collision avoidance recess 5 is formed at the front edge of the pallet 1, and as shown in FIG. 8, a collision avoidance recess 5 is formed for the preceding speaker 2. The front edge of the pallet 1 is prevented from moving the speaker 2 by simply moving the collision avoidance recess 5 closer to the speaker 2 which precedes the speaker 2.

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

FIG. 4 shows a conveyance path 6 of a speaker conveyance device used in the drying process of the bond bonding part of the speaker on the speaker assembly line.The speaker 1 is carried in from the conveyance section 1, and is transported in multiple stages up and down along the conveyance path 6. While being bent and conveyed horizontally, the bond bonded portion is dried by being exposed to hot air supplied from a hot air device (not shown), and is then conveyed out from the unloading section 8.

As shown in FIGS. 5 to 7, the speaker support pallet 1 includes a pair of left and right conveyance chains 9 and 1.
0, they are arranged closely in line at appropriate intervals along the conveying direction.

The two diagonal corners of pallet 1 are connected to both chains 9 and 9.
10 through respective pivot shafts 11 and 12 so as to be relatively rotatable. The right front pivot shaft 12 is fixed to the right front part of the lower surface of the pallet 1 in a right-protruding manner, and is connected to the right chain 10.
It is connected freely only for rotation. The left rear pivot shaft 11 is supported by the left chain 9 in a right-protruding manner, supports the lower surface of the left rear part of the pallet 1 so as to be slidable back and forth, and is prevented from coming off by a claw 13 welded to the pallet 1.

A sliding tool 14 is attached to the remaining diagonal corner of the bottom surface of the pallet 1.
are welded, and when the pallet 1 moves on the horizontal linear moving part of the conveyance path 6 in FIG.
The four locations of the stone pivot shaft 12 and the claw 13 are the guide rail 1.
5, the pallet 1 moves stably horizontally.

Both sprockets 16 and 17 that engage with the folded parts of both chains 9 and 10 are moved back and forth by a dimension 19 that is approximately equal to the distance 18 between the two pivot pins 11 and 12, and are rotatably attached to the machine frame 20. supported. As a result, at the turning point of the conveyance path 6, the pallet 1 comes off the guide rail 15 and turns downward while being supported only at two diagonal points by both pivot pins 11 and 12. .

A plate-shaped rubber magnet 2 is placed in the center of the upper surface of the pallet 1.
The upper surface of the speaker 1 serves as a receiving surface 22 of the speaker 2.
The speaker 2 is placed on this receiving surface 22 in an inverted pyramidal position, and is lightly fixed in that position by the attraction force of the rubber magnet 21. When the speaker 2 is correctly fixed on the center of the pallet 1, the pallet 1 rotates back while being maintained in a horizontal position. However, if the speaker 2 shifts even slightly back and forth, the pallet 1 will move back and forth between the two pivot pins 11 and 11. 12 as a fulcrum, and the speaker 2 falls down. This problem is caused by the pivot pins 11 and 12.
The longer the period, the better it will be, but there is a limit.

Collision avoidance recesses 5 are cut out in the front and rear edges of the pallet 1 in the shape of large arcs. This collision avoidance recess 5 is a turning part of the conveyance path 6, and as shown in FIG. It is large enough to avoid this.

The present invention is constructed and operates as described above, and when the pallet turns around at the turn-around part of the conveyance path, even if the following pallet approaches the speaker on the preceding pallet, the speakers in front of the pallet will not be heard. The edge is recessed in a collision avoidance recess so that it does not hit the inverted conical circumferential surface of the speaker.

This makes it possible to reduce the folded diameter and reduce the height H ₁ per step of the conveyance path.
The overall length of the conveyance path can be shortened by reducing the pitch between pallets with almost no spacing between the pallets, so the entire speaker conveyance device can be significantly downsized.

For this purpose, it is only necessary to cut out a collision avoidance recess in the front part of the pallet, so it can be carried out easily and inexpensively, and since each pallet is lighter by the amount removed, the operating cost is also reduced.

Moreover, since the distance between the two pivots of the pallet can be kept large, the pallet can be folded and rotated in a stable manner.

[Brief explanation of the drawing]

Figure 1 is a plan view of the main parts of the conventional product, Figures 2 and 3
The figure is a side view of the main part to explain the drawbacks of the conventional product.
4 and subsequent figures show embodiments of the present invention. FIG. 4 is a side view of the entire conveyance path, FIG. 5 is a perspective view of the portion shown in FIG. 4, FIG. The figure is a view in the direction of the arrow in FIG. 5, and FIG. 8 is a view in the direction of the arrow in FIG. DESCRIPTION OF SYMBOLS 1... Speaker support pallet, 2... Speaker, 5... Collision avoidance recess, 9, 10... Transport chain, 11, 12... Pivot support, 16, 17... Sprocket, 18, 19... Separation dimension, 22...
Receiving surface, 24...inverted conical circumferential surface.

Claims (1)

[Scope of utility model registration request] The speaker support pallets 1 are placed between the left and right pair of conveyance chains 9 and 10 at appropriate intervals along the conveyance direction, and two pivots are attached to both chains 9 and 10 at two diagonal corners of the pallet 1. Both sprockets 16 and 17 are supported relatively rotatably by 11 and 12 and engage with the folded portions of both chains 9 and 10.
Rotatably supported by shifting back and forth with a dimension 19 approximately equal to the distance 18 between 1 and 12,
The receiving surface 22 of the speaker 2 in an inverted conical position is provided at the center of the upper surface of the pallet 1, and the inverted conical peripheral surface 24 of the speaker 2 on the preceding pallet 1 is connected to the inverted conical circumferential surface 24 of the speaker 2 on the preceding pallet 1 at the folded part of both chains 9 and 10. A speaker conveyance device characterized in that collision avoidance recesses 5 are cut out at the front and rear edges of the pallet 1 to avoid front edges colliding.