JPS61130117A - Device for stacking and unstacking tires - Google Patents

Abstract

PURPOSE:To enhance the efficiency of work, regardless of the size of tires, by centering each tire on a conveyer, lifting the centered tire, and supporting the lifted tire with support members swingable along the tread and lower corners of the tire. CONSTITUTION:A tire W on a conveyer 1 is centered by a centering unit 3. The tire W on a plate 9 is lifted by an elevator 4. At that time, tire support arms 5 are kept open by cylinders 14. After the tire W is elevated to an ascent limit, air is discharged from the cylinders 14 so that the arms swing and close due to their own weight. As a result, support members 16 are placed in contact with the tread W2 of the tire. The elevator 4 is then moved down so that the lower corners W1 of the tire are supported by support members 15. After that, a following tire Wa is lifted into contact with the preceding tire W so that both the tires are lifted together and the corners of the tire Wa are supported by the support members 15. Efficient work is thus enabled.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a tire stacking and unloading device, and more specifically, to a tire stacking and unloading device that is capable of reliably stacking and unloading tires of various sizes one by one. This relates to equipment for stacking and unloading tires.

[Prior art]

Conventionally, a stacking device that sequentially stacks a plurality of tires from below in contact with each other has a support arm that supports the bottom surface of the tire located at the bottom, and a support arm that supports the bottom surface of the tire that is stacked from the bottom. There was a problem in that it was necessary to release the support of the tire just before it came into contact with the bottom surface of the tire at the bottom, and it was extremely difficult to control the timing.

Furthermore, if the support arm was not released in a timely manner, the center of the stacked tires would shift, causing the stack to collapse, making it impossible to stack the tires in a stable manner.

Additionally, it is necessary to change the position of the tire support arm depending on the size of the tire, which requires a lot of effort and time.Furthermore, with conventional equipment, it is not possible to load and unload tires one by one. The problem was that it couldn't be done.

[Object of the invention]' This invention was devised by focusing on the conventional problems, and its purpose is to repair each tire one by one and in a stable condition, regardless of the size of the tire. To provide a tire stacking and unloading device that can efficiently stack and unload tires.

[Structure of the invention]

In order to achieve the above object, the present invention provides a tire lifting device at the bottom of a conveyor for lifting and lowering tires that have been centered by a centering device, and a swingable tire having parallel links on the side of the centering device. A tire support arm is provided, and support members are provided at the tips of the tire support arms to support the lower shoulder portion of the tire and the tread portion of the tire that are pushed up by the tire lifting device. That is.

[Embodiments of the invention]

The present invention will be described in detail below based on the accompanying drawings.

1 and 2 show plan views of a tire stacking and unloading device according to the present invention, in which 1 is a conveyor for carrying tires W installed on a support frame 2, and 3 is a conveyor for carrying tires 1.
A tire W centering device provided in the middle of the tire W, 4
is a tire lifting device installed at the bottom of the conveyor 1,
Reference numeral 5 indicates a plurality of (four in this embodiment) tire support arms installed on both sides of the centering device 3.

The conveyor 1 has a plurality of rollers 1a arranged on a support frame 2 at predetermined intervals and in parallel with each other at intervals in the center of the longitudinal direction. The centering device 3 is composed of four centering arms 3a rotatably supported on the support frame 2, and a link mechanism 6 that synchronously expands and contracts the four centering arms 3a. A guide roller 7 that rotatably supports the tire W is provided at the tip of the centering arm 3a.

Further, the tire lifting device 4 includes a rod 8a of a lifting cylinder 8 (air cylinder) supported by the support frame 2.
It is composed of four support plates 9 that support the lower surface of the tire W at the upper end, and a loft 10 for preventing rotation connected to the support plates 9, and the support plate 9 is moved to the conveyor by the expansion and contraction operation of the lifting cylinder 8. The roller 1 is configured to appear and retract from the upper surface of the roller 1a.

Further, the tire support arms 5 installed on both sides of the centering device 3 are configured as parallel links by a plurality of arms, and the base end of the tire support frame 5 is connected to a bracket fixed on the support frame 2. 11, pin 12
It is rotatably supported via. Further, the inner arm of the tire support arm 5 is connected to and supported by an air cylinder 14 supported by the bracket 11.

A support member 15 such as a roller that supports the lower shoulder portion W1 of the tire W and a support member 16 such as a roller that supports the tire tread portion W2 are attached to the upper end of the tire support arm 5. 15.16 is tire W
The lower shoulder portion W1 and the tire trend portion W2 are supported during stacking and unloading of tires.

Next, the action of the tire support arm 5 when stacking tires W will be explained with reference to FIGS. 3 to 8.

After the tire W transported by the transport conveyor 1 is centered by the centering device 3, the lifting cylinder 8 of the tire lifting device 4 is extended and the tire W is lifted by the support plate 9 (see FIG. 3).

At this time, the tire support arm 5 is maintained in an open state by the air cylinder 14.

When the tire W is raised to the upper limit by the tire lifting device 4, the air in the air cylinder 14 is released to the atmosphere, and the tire support arm 5 lifts the tire W under its own weight as shown in FIG.
The support member 16 swings until it comes into contact with the tread portion W2 (see FIG. 6). Next, the tire W is moved to the tire lifting device 4
At this time, the lower shoulder portion W1 is supported by the support member 15 provided at the tip of the tire support arm 5 (see FIG. 6).

Then, while the tire W is supported by the support member 15, the tire lifting device 4 descends to its lower limit.

Next, the next tire Wa conveyed by the conveyor 1 is centered by the centering device 3 in the same way as in FIG.
is extended and lifts the tire Wa by the support plate 9 (see FIG. 7).

At this time, since the support member 15 provided at the tip of the tire support arm 5 supports the tire shoulder portion W1 of the tire W, the lower surface of the first stacked tire W and the second tire The upper surface of Wa is raised while being in contact with the upper surface of Wa.

At this time, the air in the air cylinder 14 is open to the atmosphere, so the tire support arm 5 is swung outward by the tire Wa via the support member 15 (see FIG. 8). .

When the tire Wa further rises and passes the support member 15, the tire support arm 5 swings inward due to its own weight as shown in FIG.
The support member 16 enters into the lower shoulder portion W1 to support the tire Wa, and also comes into contact with the tire tread portion W2 to support the tire Wa.

When the tire lifting device 4 descends from such a state,
Lower shoulder portion W1 of tires Wa stacked with tires W
is supported by contacting the support member 15 of the tire support arm 5, and the tire lifting device 4 descends to the original position while leaving the tire W there.

Such operations are sequentially performed on the tires Wb, Wc, Wd, and Wx transported by the transport conveyor 1.

Incidentally, the small-diameter tires W1 to WX can also be stacked by the action of the tire support arm 5 similar to that described above.

Next, the operation when a predetermined number of stacked tires Wx are loaded and unloaded one by one will be explained based on FIGS. 10 to 14.

First, as shown in FIG. 10, when a specified number of tires are piled up, the lifting cylinder 8 of the tire lifting device 4 is operated to extend, and the entire tire W is lifted by the support plate 9.

At this time, the air cylinder 14 is extended and the tire support arm 5 is in an open state (see FIG. 11).

Next, all the tires W are lowered by the tire unloading device 4, and when the lower surface of the lowest tire Wx blocks light from the detection switch 17 such as a phototube, the air cylinder 14 is contracted and the tire support arm 5 is closed. is swung in the direction.

A support member 1 provided at the tip of the tire support arm 5
6 comes into contact with the tread portion W2 of the lowermost tire Wx that is being lowered, and the swinging stops in this state (see FIG. 12).

Then, when the tire Wx is further lowered by the tire lifting device 4, the support member 15 enters the tire shoulder portion W1 of the next tire Wd (second from the bottom) and supports the other stacked tires Wx. It is something.

Then, when the tire Wx is further lowered by the tire lifting device 4, the tire W a - W x located above the tire Wx to be carried out is supported by the tire support arm 5 (see FIG. 13). ), the tire Wd that has reached the top of the transport conveyor 1 is carried out while being placed on the transport conveyor 1 (see FIG. 14). By repeating the above operations, the tires Wa, b are stacked up.
, c, d, and x are loaded and unloaded one by one and transported outside.

Furthermore, when loading and unloading tires, it is possible to reliably load and unload one tire at a time, regardless of tire size.

By repeating the above operations, it is possible to stack and stock a plurality of tires W while centering them, and also unload the stacked tires Wx one by one to proceed to the next process. It can be transported efficiently.

〔Effect of the invention〕

As described above, this invention provides a tire lifting device for lifting and lowering the tire centered by the centering device at the lower part of the conveyor, and a swingable tire having parallel links on the side of the centering device. A support arm is provided, and support members are provided at the tip of the tire support arm to support the lower shoulder portion of the tire and the tread portion of the tire pushed up by the tire lifting device. Regardless of the situation, it is possible to reliably stack and unload tires one by one and in a stable condition.Therefore, it is possible to stock a large number of tires in a small space, and to transport them one by one. There is a possible effect.

[Brief explanation of the drawing]

Fig. F is a plan view of a tire stacking and unloading device embodying the present invention, Fig. 2 is a front view of Fig. 1, Fig. 3 is an enlarged front view when stacking tires, and Figs. 4 to 9. 1 is an explanatory diagram showing the sequence of operations when stacking tires, and FIGS. 10 to 14 are explanatory diagrams showing the operation of unloading the stacked tires one by one. 1... Transfer conveyor, 3... Centering device,
4... Tire lifting device, 5... Tire support arm,
15.16...Supporting member, W a % W x...
Tire, Wl...tire shoulder part, W2...tire tread part.

Claims (1)

[Claims] A tire lifting device is provided at the bottom of the conveyor for lifting and lowering the tire centered by the centering device, and a swingable tire support arm having a parallel link is provided on the side of the centering device. A tire stacking and unloading device, characterized in that a tire support arm is provided at its tip with support members that support the lower shoulder portion of the tire and the tread portion of the tire pushed up by the tire lifting device.