JPS6240972Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pallet conveyor device used for conveying long objects.

Conventionally, as this type of device, a first conveyor for forward transport and a second conveyor for return transport, which are composed of a free roller conveyor or the like, are provided in upper and lower stages between the start and end positions of the transport line. A pallet prepared according to the article is placed on the first conveyor and conveyed from a starting end position to an end position, and the article placed on the pallet is subjected to a predetermined processing during conveyance,
It is known that after discharging articles at the terminal position, the empty pallet is transferred to the second conveyor using an elevator or the like and returned to the starting position. It also becomes longer, requires a relatively large space for transferring the pallets between the starting end position and the ending position, and has the disadvantage that the transferring operation takes time.

In order to eliminate such inconveniences, the present invention aims to provide an apparatus in which the pallets are made flexible and can be transferred in as small a space as possible and in a short time by reversing the pallets. A first conveyor 2 for forward transport conveys the pallet 1 for placing articles from the starting end position to the end position of the conveyance line, and a return conveyor 2 for transporting the pallet 1 from the end position to the starting end position. A first conveyor 2 for transporting a pallet 1 for placing an article from a starting end position to a terminal position of the transport line;
A second conveyor 3 for conveying the pallet 1 from the terminal end position to the starting end position is provided in upper and lower two stages, and the pallet 1 is formed into pallet pieces 4 divided into a plurality of pieces in the length direction. , the pallet pieces 4 are attached to each link piece 5a of a link chain 5 that engages with a sprocket 6 provided between the first conveyor 2 and the second conveyor 3.

In the illustrated example, a pair of free roller chains 9, which are stretched between chain sprockets 8 at a starting end position and an ending end position, are arranged in upper and lower stages in pairs on the left and right inside the line frames 7 on both sides provided along the conveyance line. Thus, the first conveyor 2 at the upper stage and the second conveyor 3 at the lower stage described above were constructed. Further, the pallet 1 is constructed by providing a pair of link chains 5 on both sides, and constructing each pallet small piece 4 between the mutually opposing link pieces 5a of both link chains 5. A placing part 4a for the article W is formed in the center of the front surface of the small piece 4, and conveyor seats 4b, 4b are formed on both sides of the back surface, and the pallet 1 is placed on the first conveyor 2 at the seats 4b, 4b. Furthermore, a pair of sprockets 6 are provided at each of the starting and ending positions to engage with both link chains 5, respectively, and the line frame 7 is provided with two upper and lower guide rails 10, respectively. 11
The pallet 1 conveyed by the first conveyor 2 is rotatably supported by the upper guide rail 10 on the link connecting roller 5b of the link chain 5, and the pallet 1 conveyed by the second conveyor 3 is similarly supported. The roller 5b is rotatably supported by the lower guide rail 11.

In the drawing, 12 is a stop cylinder that temporarily stops the pallet 1 at the end position by cooperating with a positioning piece 13 protruding from the small pallet piece 4 at the tip of the pallet 1, and 14 is a stop cylinder of the link chain 5 provided on the outside of the sprocket 6. The guide frame is shown to prevent it from falling off.

Although FIG. 1 only shows the configuration at the end position, the configuration at the start position is also similar.
Next, to explain its operation, the pallet 1 conveyed to the terminal position by the first conveyor 2 is temporarily stopped at that position by the operation of the stop cylinder 12, and in this state, the article W is delivered from the pallet 1 and then the pallet 1 is moved to the terminal position. The operation of the cylinder 12 is released to send the pallet 1 forward, and when the tip of the link chain 5 reaches the position indicated by A in FIG. 1, the sprocket 6 is rotated.
and the link chain 5, the pallet 1 is reversed and transferred from the first conveyor 2 in the upper stage to the second conveyor 3 in the lower stage, and the pallet 1 is transferred to the second conveyor 3 on both sides of the surface of each pallet piece 4. 2 is placed on the conveyor 3 and conveyed to the starting end position, and is again reversed and transferred from the second conveyor 3 to the first conveyor 2 by rotation of a sprocket at the starting end position (not shown).

Here, the rotational driving force of the sprocket 6 when transferring the pallet 1 at the end position or the start end position is small because the sprocket 6 is rotated in the direction in which the pallet 1 is pushed out by the first conveyor 2 or the second conveyor 3. A small drive source is sufficient.

In this way, according to the present invention, the pallet 1 conveyed by the first conveyor 2 and the second conveyor 3 provided in upper and lower stages is divided into a plurality of pieces 4 in the length direction, and is formed into small pallet pieces 4. Since the small pallet pieces 4 are attached to each link piece 5a of the link chain 5 that engages with the sprocket 6 provided between the first conveyor 2 and the second conveyor 3, the pallet 1 is formed into a long length. This makes it easier to convey long objects, and even when it is a long pallet, it can be easily transferred by the sprocket 6 provided between the upper and lower first conveyor 2 and second conveyor 3. This not only reduces the space required for the transfer and shortens the transfer work, but also reduces the driving force of the sprocket 6.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional side view of an example of the present device, and FIG. 2 is a cross-sectional view taken along the line -- in FIG. 1... Pallet, 2... First conveyor, 3...
Second conveyor, 4...Pallet small piece, 5...Link chain, 5a...Link piece, 6...Sprocket.

Claims (1)

[Scope of utility model registration request] A first conveyor 2 for forward transport conveys the pallet 1 for placing articles from the starting end position to the terminal position of the conveyance line, and a second conveyor 3 for transport conveying the pallet 1 from the terminal position to the starting end position. In the case where the pallet 1 is provided in two upper and lower stages, the pallet 1 is divided into a plurality of small pallet pieces 4 in the length direction, and the small pallet pieces 4 are provided between the first conveyor 2 and the second conveyor 3. A pallet type conveyor device characterized in that a pallet type conveyor device is attached to each link piece 5a of a link chain 5 that engages with a sprocket 6.