JPS6117946Y2 - - Google Patents

Description

[Detailed description of the device] This device stops the conveyed object at a fixed position without swinging back and forth in the conveying direction, and also when sending out the conveyed object that is stopped at a fixed position. The present invention relates to a fixed position stopping device for a chain conveyor that can be started quickly.

Conventionally, a cylinder block, etc., is placed on a pallet supported by the conveyance support rollers by driving an endless roller chain in which conveyance support rollers are rotatably attached to chain links in the conveyance direction. When attaching a predetermined member to the conveyed object, the pallet and the conveyed object are stopped at a fixed position.

The above pallet and conveyed items are stopped by raising the stopper with a lifting device, but even during this stop, the roller chain is continuously driven and traveling in the direction of the arrow above. Due to the sliding contact between the lower surface of the pallet and the roller for supporting the conveyed object, the roller for supporting the conveyed object rotates in the opposite direction. As a result, the pallet and the conveyed object swing back and forth in the conveying direction, which poses a problem that hinders the attachment of members.

This idea was created in view of the above-mentioned conventional problems, and in order to facilitate the attachment of components to conveyed objects such as cylinder blocks, it is possible to stop the conveyed objects accurately without swinging back and forth in the conveying direction, and An object of the present invention is to provide a device for stopping a conveyed object in a fixed position for a chain conveyor, which can promptly start the stopped conveyed object to improve workability when conveying the stopped conveyed object again.

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

FIG. 1 shows an overall side view of a chain conveyor to which the stopping device of this invention is applied. In the figure, 1 is a frame, 2 is a driving sprocket, and 3 is a driven sprocket. These two sprockets 2, 3, for example, each pair of sprockets are fixed in parallel to rotating shafts 2a, 3a (however, only one sprocket 3, 2 is shown in the drawing), and the rotating shafts 2a, 3a are rotatably supported by bearing members (not shown) attached to the frame 1.

A roller chain 4 is stretched between the driving sprocket 2 and the driven sprocket 3, and is driven by a driving motor 5 in the direction of arrow A.

The chain link 4a of the roller chain 4 has the following:
As shown in FIG. 2, conveyance support rollers 6 are rotatably mounted at predetermined pitches.
A pallet 7 is placed on these conveying support rollers 6, and a conveying section 8, such as a cylinder block, is placed on this pallet 7.

Therefore, as the roller chain 4 moves in the direction of arrow A, the conveyed object 8 is placed on the pallet 7 and conveyed in the same direction.

The conveyed object 8 is stopped at the X, Y, and Z positions shown in FIG. 1 by stoppers, which will be described later, and predetermined members are attached at the stopped positions.

FIG. 3 shows a stopper device for stopping the conveyed object 8 at the X, Y, and Z positions. In the figure, reference numeral 9 denotes a stopper, which has a transport object positioning locking piece 9a formed in the vertical direction and a transport object support surface 9b formed adjacent to the upstream side of this locking piece 9a. ,
It can be raised and lowered by the operation of a lifting device 10 such as a cylinder, and when the stopper 9 reaches the top dead center indicated by the imaginary line B by the operation of the lifting device 10, the support surface 9b of the conveyed object is moved by the conveying support roller. It is located above the upper end of 6 by a dimension h (2 to 3 mm).

11 indicates a pressing means. This pressing means 11 is
This is for placing the pallet 7 on which the transported object 8 is placed on the transport object support surface 9b of the stopper 9, and for quickly moving the pallet 7 and the transported object in the transport direction when the stopper 9 is lowered. It is arranged upstream of the stopper 9.

The pressing means 11 is a cylinder 11 that can operate in two stages.
a and a piston rod of this cylinder 11a, that is, an operating rod 11b, and a pressing member 12 is swingably attached to the operating rod 11b.

The pressing member 12 consists of a main plate 12a and an auxiliary plate 12b.The main plate 12a is supported by a support plate 17 by a pin 13 so as to be swingable in the directions of arrows C and D, and the auxiliary plate 12b is supported by the main plate 12a. On the other hand, it is pivoted by a pin 14 and regulated by a stopper 15 so that it can swing in the directions of arrows E and F, that is, from the position shown by solid line G to the position shown by imaginary line H.

In the above structure, as the roller chain 4 travels, the conveyed object 8 on the pallet 7 supported on the conveying support roller 6 moves from the position shown in FIG. 4a.
For example, it is transported to the X position, which is the first stop position.

During this time, one side of the tip of the pallet 7
The pressing member 12 comes into contact with the auxiliary plate 12b, and the auxiliary plate 12b swings about the pin 14 to allow the pallet 7 and the conveyed object 8 to pass (see FIG. 4b).

Next, the lifting device 10 is operated to raise the stopper 9 to the top dead center position as shown in FIG. 4C. In this case, the front end of the pallet 7 is in contact with the rear end inclined portion of the support surface 9b of the conveyed object of the stopper 9, and the rear end of the pallet 7 is in contact with the front end surface of the auxiliary plate 12b.

Subsequently, the actuating rod 11b in the cylinder 11a of the pressing means 11 is retracted by the first operation, causing the main plate 12a of the pressing member 12 to swing in the direction of arrow C about the pin 13 as a fulcrum. In this case, since the auxiliary plate 12b is regulated by the stopper 15, the tip of the auxiliary plate 12b presses the rear end of the pallet 7 forward, that is, in the conveying direction, and the pallet 7 is pushed against the support surface of the stopper 9 for the conveyed object. Let it ride on top of 9b,
Then, the pallet 7 is moved to a position where the front end surface of the pallet 7 comes into contact with the positioning locking piece 9a of the conveyed object, and then stopped (see Fig. 4d).

At the time of the above-mentioned stop, the support surface 9b of the stopper 9 for the conveyed object is larger than the upper end of the conveyance support roller 6 by a distance h.
Since the lower surface of the pallet 7, except for a part of the rear end (point P in Figure 4d), is separated from the conveyance support roller 6, even if the pallet 7 itself stops, the conveyance Since no sliding contact occurs with the support roller 6, the pallet 7 and the conveyed object 8 do not swing back and forth in the conveying direction.

While the pallet 7 and conveyed object 8 are stopped,
A predetermined member is assembled and attached to the conveyed object. When this installation work is completed, the lifting device 10 descends and returns to its original position, and
The cylinder 11a of the pressing means 11 performs a second operation, retracting its operating rod 11b further,
The pallet 7 is forcibly and quickly moved from the position shown by the solid line in FIG. 4e to the position shown by the imaginary line to reduce the load on the roller chain 4 at the time of starting and move the pallet smoothly, thereby improving work efficiency.

The pallet 7 and the conveyed object 8 are sequentially sent to the Y position and the Z position, stopped at both positions by the same operation as the X position, and sent out from the stopped position.

After the pallet 7 and the conveyed object 8 are sent out from the stop position in the conveying direction, the operating rod 11 of the pressing means 11
b returns to its original position and waits for the next pallet 7 and article 8 to be transported.

Although the above embodiment describes an example in which the conveyance object 8 is placed on the pallet 7 and conveyed, this invention is not limited to the above embodiment. Even if the conveyance object 8 is directly supported and conveyed by the conveyance support rollers 6, the same effects as in the above embodiment can be obtained.

As explained above, this invention is configured so that the conveyed object is supported and stopped by the conveyed object supporting surface of the stopper located somewhat above the conveyed object supporting roller in a fixed position, so that the conveyed object is shaken when stopped. This has advantages such as being able to prevent movement and stop accurately, making it easy to attach the member, and being able to start quickly with the operation of the pressing means, improving work efficiency.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of a chain conveyor device to which this invention is applied, Fig. 2 is an enlarged side view showing the support state of pallets and conveyed objects, Fig. 3 is an enlarged side view showing the stoppers and pressing means, Figure 4a or 4th
Figure e is an explanatory diagram of the operating procedure. 4... Laura chain, 4a... chain link,
6... Roller for supporting conveyed object, 8... Conveyed object, 9...
...Stopper, 9a...Latching piece for positioning the conveyed object,
9b...Supporting surface for conveyed object, 10...Lifting device, 1
1... Pressing means, 11b... Operating rod, 12... Pressing member.

Claims (1)

[Scope of utility model registration request] An endless roller chain in which rollers for supporting conveyed objects are rotatably attached to chain links is driven to convey the conveyed objects, and a stopper is raised by a lifting device to stop the conveyed objects at a predetermined position. In this apparatus, a supporting surface for the conveyed object is formed adjacent to the upstream side of the conveyed object positioning locking piece of the stopper and located slightly above the conveyed object supporting roller when the stopper is raised, and A pressing means that can operate in two stages is installed on the upstream side,
The first operation of this pressing means presses the rear end of the conveyed object so that when the stopper rises, the conveyed object rides on the support surface of the conveyed object of the stopper, and the tip of the object is brought into contact with the positioning locking piece of the stopper. A conveyance object fixing device for a chain conveyor, characterized in that a pressing member is swingably attached to the actuating rod of the pressing means, the pressing member being positioned in contact with the stopper and pushing out the conveyed object in the conveying direction in a second operation when the stopper is lowered. Position stop device.