JPH0610042B2 - Table conveyor - Google Patents

Description

The present invention relates to a table conveyor driven by a chain.

[Conventional technology]

2. Description of the Related Art In recent years, assembling of electric products and the like has been carried out on a conveyor and successively sent to the next step by continuous work.

As a conveyor used in this continuous operation, there is a belt conveyor, a roller conveyor having a table placed thereon, or the like.

[Problems to be solved by the invention]

However, in the belt conveyor, since each object to be assembled is on the same belt, there is a problem in that it is not possible to stop only one object on it.

Further, in the roller conveyor and the like, a conveyor for returning the conveyed table to the original position is also required, resulting in a problem that a large installation area is required.

In addition, although a table conveyor that moves a table using a chain conveyor has been proposed in some cases,
Since the table is usually composed of a single plate material which is comparatively long, there is a problem that a special return device is required, an installation area is required as a whole, and the entire device becomes expensive.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a table conveyor that has a small installation area, can accurately and temporarily stop each table independently, and is inexpensive as a whole. .

[Means for solving problems]

The table conveyor according to the present invention, which meets the above-mentioned object, comprises a pair of endless drive chains which are arranged in parallel and mesh with a sprocket which is rotationally driven by a motor, and close parallel to the insides of the pair of drive chains. And a pair of end driven chains that are movably arranged in the guide members that are arranged above and below, and two linked pins are connected to the pair of driven chains for each link plate of the driven chain. U-shaped fixed to either one of the drive chain or the driven chain and a friction plate attached to the non-fixed side, and a plurality of closely arranged connecting rods that form a flat table base. And a main member having a frontward and rear side surface in the traveling direction that becomes smaller inward, and a main member integrally connected to the main member. Consist a secondary part of the inverted trapezoidal shape narrowed, further, the outer surface of the connecting rod is lower than the height of the driven chain.

[Action]

In the table conveyor according to the present invention, the driven chains arranged in parallel in the upper and lower guide members are connected by the connecting rods forming the table base, and the driven chains are rubbed by the drive chain driven by the motor. It uses power to drive. Therefore, by driving the motor, the drive chain moves, and this force is transmitted to the driven chain by the pressing spring, and the connecting rod forming the table base moves according to the drive chain, which causes the table base to move.

On the other hand, since the power transmission between the drive chain and the driven chain depends on the frictional force, it can be performed without stopping the drive chain by stopping the table base. The table base can be stopped by using it to stop. In this case, since the drive chain is moving, the other table bases are moving independently of the stopped table base.

Further, since the connecting rod is composed of a main member whose front and rear side surfaces in the traveling direction become smaller inward, and an auxiliary trapezoidal auxiliary member which is integrally connected to the main member and further narrows inward, the connecting rod is close to Can be turned smoothly even if arranged.

Further, since the outer surface of the connecting rod is lower than the height of the driven chain, stability of the carried object to be placed is good.

〔Example〕

Next, one embodiment of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.

Here, FIG. 1 is a partial plan view of a table conveyor according to an embodiment of the present invention, and FIG. 2 is an arrow AA in FIG.
Sectional view, FIG. 3 is an overall plan view of a table conveyor according to one embodiment of the present invention, FIG. 4 is a front view of a table conveyor according to one embodiment of the present invention, and FIG. 5 constitutes the table conveyor. FIG. 6 is a side view in which a guide member of the driven chain is partially omitted, and FIG. 6 is a side sectional view showing a bent state of a table base constituting the table conveyor.

As shown in FIGS. 3 and 4, a table conveyor 10 according to an embodiment of the present invention includes a gantry body 11 of the table conveyor, table bases 12 and 13, and a drive device 14 provided in the front portion. A drive chain 15 provided on both sides of the gantry body 11 as shown in FIGS. 1 and 2, and a driven chain 16 provided inside the drive chain 15.
And a pressing spring 17 attached to the driven chain 16. These will be described in detail below.

The gantry body 11 is entirely made of an aluminum material or a steel material, and drive chains 15 are arranged in parallel on both outsides of both sides of the gantry body 11. Pairs of the gantry body 11 are meshed with the drive chain 15 at both ends in the traveling direction. The sprocket is provided, and a tensioning device 18 for the drive chain 15 is provided at the forward end of the gantry body 11.

A sprocket 19 is fixed to a shaft end of a sprocket provided at an end in the traveling direction, and is connected via a chain 22 to a sprocket 21 fixed to an output shaft of a continuously variable transmission motor 20 having a speed reducer therein, The drive chains 15 provided on both sides move at a predetermined speed.

On the other hand, belt conveyors 23 and 24, which are configured by a normal device, are arranged in front of and behind the table conveyor 10, and from the belt conveyor 23 to the table conveyor 1
Items can be conveyed to 0 and from the table conveyor 10 to the belt conveyor 24.

The relationship between the drive chain 15 and the driven chain 16 will be described in more detail with reference to FIG. 1 and FIG. 2. The drive chain 15 disposed near both sides of the gantry body 11 has a front end that is a turning point. The drive sprocket meshes with the driven sprocket at its rear end, but the intermediate portion of the drive chain 15 has a guide member 2 for receiving the chain roller 25 from above and below as shown in FIG.
6 and 27 are provided so that the drive chain 15 can smoothly move on a predetermined track.

As the guide members 26 and 27, wear-resistant metal may be used, but wear-resistant synthetic resin such as Duracon may be used and screwed to the gantry body 11.

As shown in FIG. 2, a pad member 28 made of a wear-resistant material is provided on the outer side of the drive chain 15 so that the drive chain 15 does not move to the outside and keeps a predetermined distance. ing.

Ended driven chains 16 are provided on the inner sides of both sides of the drive chain 15, and the driven chains 16 are also provided with a guide member 29 vertically, as with the drive chain 15.
Although 30 is attached, this guide member 29, 30
As shown in FIG. 5, both ends are semi-circular to form a folded-back portion, and the other portions are linear, so that the driven chain 1
6 is designed to move smoothly on a predetermined orbit.
The driven chains 16 provided on both sides of the driven chain 16 are connected to each other by a connecting rod 31 having an end shape corresponding to the length of the table base and having a flat outer surface to form the table bases 12 and 13. ing.

As shown in FIG. 6, each of the connecting rods 31 has a tapered main member 32 whose outer surface is flat and adjacent side portions are reduced inward, and an inverted mount integrally connected to the main member 32. With the auxiliary member 33 having a shape, even when the driven chain 16 bends, it can be smoothly bent along with the link plate of the chain. The outer surface of the connecting rod 31 is lower than that of the driven chain 16, so that the product can be stably transported, and the inner link plate of the driven chain 16 serves as a side stopper.

On the other hand, one side of a U-shaped pressing spring 17 is fixed to the outside of the driven chain 16 as shown in FIGS. 1 and 2, but the other side of the pressing spring 17 is resistant to wear. A friction plate 34a made of a synthetic resin (for example, DURACON) is attached. The pressing spring 17 is appropriately adjusted to come into contact with the side portion of the link plate 34 of the drive chain 15 with a sufficient pressing force.

Both ends of the connecting pin 35a of the drive chain 15 are flattened so that the ends of the connecting pin 35a are outside the link plates 34, 3
The friction plate 34 does not protrude from the surface of the sliding member 5 and can smoothly contact and slide.

The pressing spring 17, the driven chain 16 and the connecting rod 31 are connected and integrated by a slightly longer pin 36.

The table base 12, 1 is provided at a predetermined position of the gantry body 11.
Stoppers 37 and 38 for stopping the table 3 at a predetermined position are provided, and engage with a cylindrical stopper 39 attached to the lower portions of the table bases 11 and 12 to stop the table bases 12 and 13.
Can be stopped at a predetermined position.

The stop devices 37 and 38 are composed of a receiving member with a shock absorbing device that contacts the stopper 39, and an air cylinder with a guide that moves the receiving device together with the shock absorbing device.
Normally, the air cylinder is contracted so that the receiving object does not come into contact with the stopper 39.
When stopping 2 and 13, the air cylinder projects so that the receiving object is moved laterally and brought into contact with the stopper 39.

The conveyance speed of the belt conveyor 23 is the same as the conveyance speed of the table conveyor 10, and at the end of the belt conveyor 23 in the traveling direction and the end of the table conveyor 10 in the traveling direction, there are photoelectric elements (not shown). Is provided with a conveyed object detection sensor that smoothly moves from the belt conveyor 23 to the table conveyor 10 to the table conveyor 1
Items can be transferred from 0 to the belt conveyor 24.

Next, a method of using the table conveyor 10 according to the embodiment and its operation will be described in more detail. When the continuously variable motor 20 is driven to move the drive chain 15 in a predetermined direction, the table conveyor 10 is attached to the driven chain 16. Since the pressing spring 17 is pressing the link plate 34 of the drive chain 15, the driven chain 16 also moves due to the frictional force as the drive chain 15 moves.

When the driven chain 16 moves, the connecting rods 31 that connect the driven chains 16 on both sides move, so that the table bases 12 and 1 formed by the connecting rods 31 arranged in parallel.
3 moves according to the moving speed of the drive chain.

Here, in order to stop the table base 12 or 13, when the stopper 39 is driven and the stopper 39 is received by the receiving metal object, the connecting rod 31 stops. In this case, the drive chain 15 moves, but the connecting rod 31 stops, so the driven chain 16 to which the connecting rod 31 is fixed stops, and the friction plate 34a attached to the pressing spring 17 causes the linking of the drive chain 15. This causes slipping with the plate 34, and while maintaining this state, the table base 12 or 13 can be stopped independently at a predetermined position.

〔The invention's effect〕

As is clear from the above description, the table conveyor according to the present invention is composed of the connecting rods that are fixed to the individual chain links. It is possible to arrange them in close contact with each other, which makes it possible to reduce the installation area of the entire apparatus.

Further, even if the drive chain arranged independently of the endless driven chain extends, the total length of the table conveyor can be kept constant by providing the tensioning device in the middle portion of the table conveyor.

Since each table base can be independently brought into contact with the drive chain via the pressing spring, each table base can be independently stopped at a predetermined position.

Further, by increasing the strength of the connecting rod that constitutes the table base, it is possible to receive a large overload, and by forming the outer surface of the connecting rod to be flat, the table base can be made flat.

Further, since the connecting rod is composed of a main member whose front and rear side surfaces in the traveling direction become smaller inward and an auxiliary trapezoidal auxiliary member which is integrally connected to the main member and further narrows inward, sufficient strength is provided. Even if the connecting rods are arranged close to each other, it can smoothly turn.

Since the outer surface of the connecting rod is lower than the height of the driven chain, it can be stably placed even if the transported object is placed on it, and the driven chain acts as a side stopper, so It can prevent slipping and falling.

[Brief description of drawings]

FIG. 1 is a partial plan view of a table conveyor according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA in FIG.
FIG. 3 is an overall plan view of a table conveyor according to an embodiment of the present invention, FIG. 4 is a front view of a table conveyor according to an embodiment of the present invention, and FIG. 5 is a driven chain constituting the table conveyor. Partially omitted side view of the guide member, 6th
The figure is a side sectional view showing a bent state of a table base constituting the table conveyor. [Explanation of reference symbols] 10 ... table conveyor, 11 ... frame body, 12,
13 ... table base, 14 ... driving device, 15 ... driving chain, 16 ... driven chain, 17 ... pressing spring,
18 ... tensioning device, 19 ... sprocket, 20 ... continuously variable motor, 21 ... sprocket, 22 ... chain, 23, 24 ... belt conveyor, 25 ... chain roller, 26, 27 ... guide member , 28 ... abutting member, 29, 30 ... guide member, 31 ... connecting rod,
32 ... Main member, 33 ... Sub member, 34a ... Friction plate,
35a ... connecting pin, 34, 35 ... link plate,
36 ... Pin, 37, 38 ... Stopping device, 39 ... Stopper

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP 61-75049 (JP, A) Actual development 51-146680 (JP, U) Actual public 60-37382 (JP, Y2)

Claims (1)

[Claims] 1. A pair of endless drive chains that are arranged in parallel and mesh with a sprocket that is rotationally driven by a motor, and are arranged vertically in close proximity to each other inside the pair of drive chains. A pair of end driven chains movably arranged in the guide member, and a flat table base connected to the pair of driven chains by two link pins for each link plate of the driven chain. A plurality of closely arranged connecting rods, and a U-shaped pressing spring fixed to either the drive chain or the driven chain and having a friction plate attached to the non-fixed side. In addition, the connecting rod is composed of a main member whose front and rear side surfaces in the traveling direction are reduced inward, and an inverted trapezoidal auxiliary member which is integrally connected to the main member and further narrows inward. Te, further, a table conveyor, characterized in that the outer surface of the connecting rod is lower than the height of the driven chain.