JP2550923B2 - Pin chain conveyor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a pin tip attached to the end of a pin protruding from a chain to be transferred.
The present invention relates to a pin chain conveyor for transferring a bottomed cylinder upside down on this pin tip and transferring it.

[0002]

2. Description of the Related Art Conventionally, for example, a pin chain conveyor is used to convey a bottomed cylindrical aluminum can as a container for beer or the like. As shown in FIG. 7, this pin chain conveyor is configured by protruding pins 2 on a chain 1 at regular intervals, and attaching a pin tip 3 having a cylindrical outer surface to the tip thereof. Then, as shown in FIG. 8, the aluminum can 4 is placed upside down on the pin tip 3 and held by the pin 2, and the chain 1 is transferred to convey the aluminum can 4.

[0003]

However, in the conventional pin chain conveyor, since the length dimension of the pin tip 3 is shorter than the height dimension of the aluminum can 4 to be covered, the aluminum can 4 is being conveyed. However, there is a defect that the opening edge 4a collides with the pin 2 and the opening edge 4a is dented. When such a defect occurs, it causes trouble during necking.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a pin chain conveyor which can prevent the deformation of the opening edge of the bottomed cylindrical body.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a chain to be transferred, a pin projecting from the chain, and a pin tip having an outer cylindrical shape attached to an end portion of the pin and having a bottomed cylinder covered upside down. A pin chain conveyor comprising a pin tip having a length dimension longer than a height dimension of the bottomed tubular body, and the end portion of the pin tip on the chain side having a tapered tip. It was characterized as being.

[0006]

In the present invention, since the length dimension of the pin tip is formed longer than the height dimension of the bottomed tubular body, the opening edge of the bottomed tubular body is prevented from directly contacting the pin, and The bottomed cylindrical body is prevented from being deformed due to interference with the pin.

Further, since the end portion of the pin tip has a taper shape with a tapered tip, even if the bottomed cylinder covered with the pin tip oscillates, the opening edge of the bottomed cylinder gradually increases with respect to the pin tip. As a result of the contact, the deformation of the opening edge is suppressed also in this point.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Pin 2 is projected from the chain 1,
The pin chip 10 is attached to the pin 2 as in the conventional case.

As shown in FIG. 1, this pin tip 10 is constructed by providing an outer member 12 on the outer periphery of a core 11. As shown in FIG. 2, the core 11 has a tubular shape, and a stepped portion 11a is formed on the inner peripheral surface thereof so as to correspond to the stepped portion of the pin 2. A tapered portion 11b having a tapered tip is formed at one end of the core 11,
Two protrusions 11c are formed at the other end. And
The pin 2 is inserted into the core 11, and the outer periphery of the core 11 is covered with the exterior member 12 by molding. Here, a taper portion 12a having a tapered tip is formed at one end of the exterior member 12, and the projection 11c of the core 11 is exposed from the other end.

As shown in FIG. 3, the pin can 10 of this embodiment is also covered with an aluminum can 4 upside down, as in the conventional case. Here, in the present embodiment, the pin tip 10
Since the length of the aluminum can 4 is longer than the height of the aluminum can 4, the opening edge 4a of the aluminum can 4 does not hit the pin 2. Therefore, even if the aluminum can 4 moves during conveyance, the aluminum can 4 and the pin 2 do not interfere with each other, and the opening edge of the aluminum can 4 can be prevented from being deformed. Moreover, since the taper portion 12a is formed at one end of the exterior member 12 of the pin chip 10, even if the aluminum can 4 swings, the opening edge 4a of the aluminum can 4 gradually increases.
It contacts the second taper member 12a. Therefore, the deformation due to the interference between the exterior member 12 and the aluminum can 4 can be suppressed.

While the aluminum can 4 is being conveyed, as shown in FIG. 4, compressed air is jetted into the aluminum can 4 covered with the pin tip 10 to move the aluminum can 4 into the pin tip 10.
There is a discharging step in which the aluminum can 4 is sucked and conveyed to the belt 13 having the hole 13a formed therethrough and provided with a suction device on the back side. This process is used for removing defective products and transferring the aluminum can 4.

Conventionally, in such a process, a turbulent flow occurs when the flow of compressed air hits the end surface of the pin tip 3 on the chain 1 side, the aluminum can 4 is bent from the axial direction of the pin tip 3 and is discharged, and the belt is discharged. In some cases, it could not be adsorbed on 13.

However, in this embodiment, since the tapered portion 12a is formed on the end surface of the pin tip 10, compressed air flows along this tapered portion 12a. Therefore, the generation of turbulent flow as in the conventional case is suppressed, the aluminum can 4 is linearly discharged in the axial direction of the pin tip 10, and can be surely adsorbed to the belt 13.

Further, while the aluminum can 4 is being conveyed, as shown in FIGS. 5 and 6, two endless belt-shaped belts 14 sandwiching the chain 1 are attached to the opening edge 4a of the aluminum can 4. The aluminum can 4 is lifted from the pin tip 10 and brought into contact with the roller 15.
Thus, there is a bottom burnishing step of applying a paint for improving the slipperiness to the bottom of the aluminum can 4.

Conventionally, in such a process, when the pin tip 3 passes through a narrow space between the belts 14 provided on both sides, the pin tip 3 interferes with the inner circumference of the belt 14 due to the fluctuation of the belt 14 and the chain 1. There was an occasion.

However, in this embodiment, since the taper portion 12a having a tapered tip is formed at the end of the pin tip 10, a larger gap than that in the conventional case is provided between the inner circumference of the belt 14 and the pin tip 10. Belt 1
Even if 4 or the chain 1 sways, pin tip 10
Is less likely to interfere with the belt 14.

Although the pin tip 10 is composed of the core 11 and the exterior member 12 in this embodiment, it may be composed of one member.

Further, in the present embodiment, for convenience of explanation of the effect, the one provided with the discharging step and the bottom burnishing step has been described, but it is also possible to omit those steps.

[0019]

As described above, according to the present invention,
Since the length of the pin tip is longer than the height of the bottomed cylinder, and the end of the pin tip on the chain side is tapered with a tapered tip, there is no interference between the pin and the opening edge of the bottomed cylinder. Can be avoided and this deformation can be suppressed.

[Brief description of drawings]

FIG. 1 (a) is a sectional view showing a pin tip according to an embodiment of the present invention, and FIG. 1 (b) is a side view thereof.

FIG. 2A is a cross-sectional view showing a core of a pin tip according to this example, and FIG. 2B is a side view thereof.

FIG. 3 is a cross-sectional view showing a usage state of the pin tip according to the present example.

FIG. 4 (a) is a side view showing a discharging process of an aluminum can, and FIG. 4 (b) is this side view.

FIG. 5 is a side view showing a bottom burnishing process of an aluminum can.

FIG. 6 is a front view of FIG. 5;

FIG. 7 is a side view showing a conventional pin chain conveyor.

FIG. 8 is an enlarged view showing a main part of FIG.

[Explanation of symbols]

 1 chain 2 pins 4 aluminum can (bottom cylinder) 10 pin tip 11 core 12 outer cylinder

Claims (1)

(57) [Claims] 1. A pin chain conveyor comprising: a chain to be transferred; a pin projecting from the chain; and an outer cylindrical pin tip attached to an end of the pin and having a bottomed cylindrical body upside down. The pin chain is characterized in that the length dimension of the pin tip is formed longer than the height dimension of the bottomed tubular body, and the end portion of the pin tip on the chain side is tapered with a tapered tip. Conveyor.