JPS60223705A - Pallet conveyor driven by brush belt - Google Patents

Abstract

PURPOSE:To reduce the number of pallet accessories required, so as to make a pallet light and easy to handle, thus increasing the number of the pallet to be used by constructing a device in such a manner that the pallet driven by brush belts is supported at its bottom face by both a line of stationary rollers and a line of rollers which is movable up and down. CONSTITUTION:Driving brush belts 4 circularly with a pallet 3 placed on the line of rollers 2b allows the pallet 3 to be transferred by means of a pair of brush belts 4. When the pallet 3 comes onto movable rollers 2b while being transferred, it is stopped by a stopper not shown. Then the movable rollers 2b are lowered down as the pallet 3 is lowered down by a clamping device 13. And a positioning projection 14 couples with a concave 15 and is fixed as the lower surface of the pallet 3 is pressed down coming contact with the upper surface 6' of parallel walls 6. The pallet can start to be transferred provided that the clamping device 13 is released. This configuration is capable of simplifying the pallet in making it light and easy to handle.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a novel pallet conveyor driven by a circulating brush belt.

2. Description of the Related Art A pallet conveyor is known in which a line is configured with a conveyor, a pallet on which semi-finished products are placed is conveyed, and the pallet is stopped at a fixed position to perform various processing on the semi-finished products on the pallet.

A conventionally known pallet conveyor is provided with a fixed rail parallel to the conveyor frame, and a drive belt is circulated in parallel with the fixed rail, while a traveling roller and a guide roller are provided on the pallet and are pressed into contact with the drive belt. In addition to providing a pressure roller that receives the driving force of this belt, various accessories such as a stop roller for stopping the pallet or a roller for determining the stop position are also provided.

The pallet in this conventionally known pallet conveyor has many accessories such as rollers attached thereto as described above, which not only increases the weight of the pallet alone, but also increases the cost of the pallet alone. The large weight of the pallet itself is a drawback, as it requires more force to handle the pallet. In addition, the pallets are exclusive to this pallet conveyor, and a large number of pallets must be prepared, so the cost of each pallet is high.
This also had the disadvantage of increasing the cost of the entire valent conveyor.

In view of the above points, the present invention eliminates the need to equip pallets with accessories as much as possible, making them lightweight, making them easy to handle, and reducing the cost of the pallet itself, even when the number of pallets increases. This was done with the aim of lowering the overall cost of the pallet conveyor.

For this reason, in the present invention, a pair of brush belts with brush surfaces facing inward and circulating in opposition are provided on conveyor frames that are parallel to each other, and a pair of roller receivers constituted by parallel walls are provided with grooves on the inside of each conveyor frame. The roller holder forms a groove in which the upper part of each roller accommodates a plurality of roller rows that protrude upward from the upper surface of the parallel wall of the groove, and these roller rows are continuous. The column row is
It consists of a fixed roller row that does not displace and a movable roller row that can move up and down, and the brush surface of the brush belt is pressed against the side surface of the pallet placed on the roller row to convey the pallet. Features.

The present invention will now be described in detail with reference to preferred embodiments shown in the drawings.

1 in the figure. 1 is a conveyor frame provided in parallel, and inside thereof a plurality of sets of roller rows 2.degree. 2, which will be described in detail later, are successively provided. 3 is placed on the roller row 2.2 on a pallet and sent. Reference numeral 4.4 denotes a brush belt for feeding and driving the pallet 3, and this brush belt is constructed as an endless body, and is made up of numerous wire rods oriented in the same direction to form a brush shape. The brush belts 4.4 are disposed inside each of the frames 1.1 so as to face each other so as to circulate, and the brush surfaces are in pressure contact with the sides of the pallet 3. The countless wire rods that make up this brush are planted parallel to each other, and they are not planted so that they stand up at right angles from the belt.
It is flocked to the extent that it is slightly slanted. Moreover, when this brush is placed on the frame 1.1, the direction of inclination of the brush is opposite to the direction in which the pallet is fed.

Although not shown, the arrangement of this brush belt 4 is similar to that of a normal circulating belt, such that it is passed between belt pulleys (not shown) and circulated by the driving force of a drive motor (not shown). .

The roller receivers 5 shown in FIGS. 5 to 7 are grooves, which are formed parallel to the inside of the conveyor frame 1. The groove 5 of this roller receiver is constituted by a parallel wall 6.6 integrally formed in parallel with the conveyor frame 1;
It houses a row of columns inside.

Each of the plurality of roller rows 2a, 2b, 2c, . In the illustrated embodiment, the roller rows 2b and 2d are located at positions facing the working robot 10 that performs processing work on the semi-finished workpiece 9 placed on a pallet.
is a movable roller row, and the other roller rows 2a and 2c are fixed roller rows.

In the fixed roller rows 2a and 2C, the upper part of the roller 8 is a parallel wall 6.6.
Its position is fixed so that it is always located above the upper surfaces 6', 6'. In the illustrated embodiment, the roller receiver is constructed by intervening a fixing base 11 in the groove 5 to fix the fixed roller rows 'la, 2C.

The movable roller rows 2b and 2d are placed on an elastic material 12 with an elastic material 1'2 interposed in the groove 5 of the roller receiver. In the normal state of the movable roller rows 2b and 2d, the upper part of the roller 8 is located above the upper surfaces G' and 6' of the parallel walls 6 and 6 so that it is at the same height as the rollers of the fixed roller row (the fifth ), e.g. by means of a clamping device 13 on a pallet 3
When pressed down, the movable roller rows 2b, 2d are pushed down against the elasticity of the elastic member 12, and the pallet is pushed down against the upper surfaces 6' of the parallel walls 6, 6.

6'. In the illustrated embodiment,
A tube is used as the elastic material 12, and air is injected into the tube. If necessary, the movable roller array may be lowered by its own weight by removing the air from the tube.

In addition, 14 in the figure is a positioning protrusion protruding from the parallel wall 6;
Reference numeral 15 indicates four positioning parts formed on the lower surface of the pallet 3.

The operation of the conveyor of the present invention constructed as described above will be explained below.

The brush belt 4 is circulated to the right in FIG. 2, and the pallet placed on the roller rows 2, 2 is moved between the brushes of the pair of brush belts 4.4, as shown in FIG. Being pinched. Therefore, this pallet is sent to the right in FIG. Then, when some force is applied to the pallet and the pallet is stopped, the brushes of the brush belt scrape the sides of the pallet, and the pallet is no longer forced to advance, but is stopped.

Although not shown in the drawings, stoppers may be provided at regular intervals, similar to known pallet conveyors.

When the pallet 3 reaches above the movable roller row 2b or 2d and is stopped by a stopper (not shown),
In the illustrated embodiment, when the pallet 3 is pushed down by the clamping device 13, the movable roller rows 2b or 2d are pushed down against the elasticity of the elastic material 12, and their lower surfaces meet the upper surfaces 6', 6 of the parallel walls 6.6. ' The positioning protrusion 14 and the positioning recess 15 are fitted into each other to be fixed at a fixed position. Therefore, machining work can be performed on the semi-finished workpiece 9 in this fixed and stationary state. When the processing is finished and the pressing action of the clamp device 13 is released, the movable roller array is pushed up by the elasticity of the elastic member 12 and is sent to the next stroke under the feeding action of the brush belt 4.

As mentioned above, in the pallet conveyor of the present invention, a pallet placed on a row of rollers is conveyed by being clamped under pressure between the brush surfaces of a pair of brush belts arranged opposite to each other.
When the pallet is stopped, the brush surface scrapes the side surface of the pallet, and a movable roller row that moves up and down is provided in the roller row, and by lowering this movable roller row, the pallet is moved to the upper surface of the groove. Since the pallet is configured to be stopped by pressure contact, the pallet does not need to be equipped with accessories such as running rollers, and therefore the pallet can be composed of a simple and lightweight single plate. Therefore, it not only has the great advantage of making it extremely easy to handle pallets during work, but also has the great effect of making the price of pallets extremely low, especially when a large number of pallets are required. This has the great advantage of reducing the overall cost of the pallet conveyor.

[Brief explanation of the drawing]

The drawings show a preferred embodiment of the pallet conveyor of the present invention; FIG. 1 is a schematic plan view thereof, FIG. 2 is a partially cutaway enlarged plan view schematically showing the roller rows, and FIG. This is a partially cross-sectional front view schematically showing the roller rows. 4 to 6 are enlarged cross-sectional views of main parts of the conveyor of the present invention, in which FIG. 5 shows the fixed roller row section, FIG. 5 shows the movable roller row section in the upper position, and FIG. 6 shows the lower position. This figure shows the movable roller rows in the figure. 1... Conveyor frame 2... Roller rows 2a, 2c... Fixed roller rows 2b, 2d... Movable roller row 3... Pallet 4...Brush belt 5...Roller holder is groove 6...Parallel wall 6'
・・・・・・Top surface 7・・・Roller holder is frame 8
...Roller 11...Fixed stand 12...
...Mr. Kazuo Wakasugi, Commissioner of the Patent Office for Elastic Materials■, Indication of the case, Patent Application No. 79591 of 1982, Title of the invention: Brush belt driven pallet conveyor 3, Relationship with the amended person case: Patent applicant Aichi 3-2 Noba Shisozuka, Kota-cho, Nukata-gun, Prefecture Central Conveyor Co., Ltd. Representative Hiroshi Nakayo 4, Agent 3-11-5-6 Iidabashi, Chiyoda-ku, Tokyo Contents of the amendment As per the attached sheet (l), After the phrase ``As it is done'' written in the 6th line of page 5 of the specification, there is a statement that ``The brush belt shown in the drawing has brushes flocked to the entire surface of one side of the belt. 1- It is also possible to implant brushes at intervals of 1- to create a brush belt with a part without brushes.''that's all

Claims (1)

[Claims] A pair of brush belts whose brush surfaces face inward and circulate in opposition are provided on conveyor frames that are parallel to each other, and a pair of roller supports formed by parallel walls form grooves on the inside of each conveyor frame. The receiver accommodates multiple sets of roller rows in the groove, with the upper part of each roller protruding upward from the upper surface of the parallel wall of the groove, and these roller rows are continuous, and these multiple sets of roller rows do not displace. It consists of a fixed roller row and a movable roller row that can be moved up and down, and the pallet is conveyed by pressing the brush surface of the brush belt against the side surface of the pallet placed on the roller row. brush belt driven pallet conveyor