JPH072527B2 - Curve conveyor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention of the present application relates to a curved conveyor of the type in which the driving force of a chain is transmitted to a conveyor belt via a power transmission belt.

[0002]

2. Description of the Related Art A conventional curved conveyor is disclosed, for example, in Japanese Patent Publication No. 61-15002. As shown in FIG. 6, in this structure, a free roller 1 formed by arranging a plurality of unit rollers 10 in series is provided at 90 ° intervals, and a conveyor belt 2 is stretched between the free rollers 1 and 1. The conveyor belt 2 is driven by a chain 4 via a power transmission means 3 described later.

As shown in FIGS. 7 and 8, the power transmission means 3 includes a block-shaped guide 5 for constraining the chain 4 to a locus along the outer peripheral edge of the conveyor belt 2 and the conveyor belt 2 from the chain 4. And a transmission means 8 for transmitting power to the chain 4.
A shaft 81 fixed via a bracket 80, a bearing 82 fitted in the middle of the shaft 81 and rolling on the outer peripheral surface of the guide 5, and an upper surface of the guide 5 attached to the tip of the shaft 81. It is composed of a pulley 83 at a higher position, a pulley 84 attached to the outer peripheral portion of the conveyor belt 2, and a power transmission belt 85 stretched between the pulley 84 and the pulley 83.

In this structure, when the chain 4 is rotationally driven, this rotational driving force is transmitted to the conveyor belt through the route of pulley 83 → power transmission belt 85 → pulley 84. However, in the above-described conventional curved conveyor, the pulley 83 on the chain 4 side and the pulley 8 on the conveyor belt 2 side
Since there is a positional deviation between 4 and 4, there is a problem that the D portion of the power transmission belt 85 stretched between them is very likely to be worn. In a curved conveyor of this type in which the driving force of the chain is transmitted to the conveyor belt via the power transmission belt, the above problem can be said to be a fatal defect.

[0005]

Therefore, according to the invention of this application, regarding the curve conveyor of the type in which the driving force of the chain is transmitted to the conveyor belt via the belt for power transmission, the belt for power transmission is less likely to wear. An object is to provide a curved conveyor.

[0006]

The invention according to claim 1 of the present application relates to a curved conveyor, in which free rollers 1 and 1 arranged at a predetermined angular interval are stretched between the free rollers 1 and 1. The conveyor belt 2 provided and a loop-shaped chain 4 provided on the outer peripheral area of the conveyor belt 2.
A guide 5 for constraining the plane trajectory of the chain 4 along the outer peripheral edge of the conveyor belt 2, and a pulley 83 attached to the chain 4 side via a bracket,
It is composed of a pulley 84 attached to the conveyor belt 2 and a power transmission belt 85 stretched between the pulleys 83 and 84. Set these pulleys 8
3 and the pulley 84 are set at the same height.

The invention according to claim 2 of this application relates to a curved conveyor, wherein knife edges 9 and 9 are arranged at a predetermined angular interval, and a conveyor belt stretched between the knife edges 9 and 9. 2, a loop-shaped chain 4 provided on the outer peripheral region of the conveyor belt 2, and the chain 4
A guide 5 for constraining the plane locus of the above to the one along the outer peripheral edge of the conveyor belt 2, a pulley 83 attached to the chain 4 side via a bracket, and a pulley 84 attached to the conveyor belt 2. And a belt 85 for power transmission stretched between the pulley 83 and the pulley 84. The axes of the pulley 83 and the pulley 84 are set to be vertical, and the pulley 83 and the pulley 84 are the same. Positioned at height.

[0008]

The function of the invention of this application is as follows. In the invention according to claim 1 or 2, the pulley 83 attached to the chain 4 side and the pulley 84 attached to the conveyor belt 2 side are set to have a vertical axis, and the pulley 8
Since 3 and the pulley 84 are set at the same height, the stretched power transmission belt 85 is mounted in the pulley grooves of the pulleys 83 and 84 in an appropriate state.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the invention of this application will be described below with reference to the drawings shown as embodiments. This embodiment is a knife-edge type curved conveyor, and in this embodiment, as shown in FIGS. 1 and 2, 90 ° intervals (90 ° intervals in this embodiment, but limited to 90 ° intervals. The conveyor belt 2 is stretched by using knife edges 9 and 9 arranged on the lower side and free rollers 1 and 1 provided below the knife edges 9 and 9, and the conveyor belt 2 is The chain 4 provided on the outer peripheral side of this is rotationally driven. The chain 4 is constrained by a guide 5 described below in a plane locus along the outer peripheral edge of the conveyor belt 2, while the transmission of power from the chain 4 to the conveyor belt 2 is described later. This is done via means 8. The chain 4 is driven by a motor M via a sprocket and a chain, as shown in FIG.

As shown in FIGS. 1 and 2, the knife edge 9 is composed of an elongated plate 90, and its edge is rounded in order to reduce the resistance of the folded portion 20 of the conveyor belt 2. It is formed on. As shown in FIG. 1, the free roller 1 is configured by arranging twelve unit rollers 10 in series. The free roller 1 has a moving distance on the inner circumference side of the conveyor belt 2 and a moving distance on the outer circumference side thereof. Sliding between the conveyor belt 2 and the free roller 1 caused by the difference can be avoided.

The chain 4 is slightly different from the one used in a bicycle or the like, and as shown in FIGS. 3 and 5, a vertical tongue piece 49 is attached to the outer roller link plate 41 constituting the chain 4. In addition, the inner pin link plate 40 is provided with a horizontal tongue 48 extending inwardly. The guide 5 is, as shown in FIGS. 1 and 3,
There are three types of upper, middle and lower stages, but basically, an arc-shaped frame 5 provided outside the chain 4.
2, a supporting member 53 protruding inward from the frame 52, and a vertical piece 50 provided at an inner end of the supporting member 53 (hereinafter, the upper piece is a vertical piece 50a, and the middle piece is a vertical piece 50a). Vertical piece 50b, lower piece vertical piece 50c
And a synthetic resin plate having a small friction coefficient is attached to each of the ends facing the chain 4).

When a force (inward force) from the conveyor belt 2 is applied to the chain 4, as shown in FIG. 3, the lower end of the vertical piece 50a and the upper end of the vertical piece 50b are vertical. The vertical piece 50 for engaging the tongue piece 49.
a and 50b are positioned, and the vertical pieces 50b and 50c are positioned so that the lower end of the vertical piece 50b and the upper end of the vertical piece 50c engage with the vertical tongue piece 49, whereby the plane locus of the chain 4 is obtained. Is restrained as described above.

The transmission means 8 is, as shown in FIGS. 3 and 4, a connecting piece 80 attached to the horizontal tongue piece 48 of the chain 4 and a pulley 83 attached to the connecting piece 80.
And a pulley 84 attached to the outer periphery of the conveyor belt 2.
And a power transmission belt 85 stretched between the pulley 83 and the pulley 84 (a round belt is used, and a detachment preventing band 86 is hung in the middle). The axes of the pulleys 83 and 84 are set to be vertical, and the pulleys 83 and 84 are set to substantially the same height. In this embodiment, as shown in FIG. 3, by adjusting the thickness of the spacer S interposed between the connecting piece 80 and the pulley 83,
The heights of the pulley 83 and the pulley 84 can be perfectly matched.

Since this embodiment is constructed as described above, the stretched power transmission belt 85 is in a state suitable for the pulley grooves of the pulleys 83 and 84, as described in the section of the above-mentioned action. As a result, the sliding between the pulleys 83, 84 and the power transmission belt 85 is reduced, and the power transmission belt 85 is less likely to wear.

Although the above embodiment is a knife-edge type curved conveyor, the present invention is not limited to this, and the conveyor belt 2 is provided between the free rollers 1 and 1 arranged at a predetermined angular interval. It is also possible to use the extended type (the type described in the column of the conventional art). Further, in the above embodiment, the vertical tongue piece 49 is provided on the roller link plate 41 side of the chain 4, but the invention is not limited to this, and it may be provided on the pin link plate 40 side.

Further, in the above embodiment, the horizontal tongue piece 48 is provided on the pin link plate 40 side of the chain 4, but the invention is not limited to this and may be provided on the roller link plate 41 side. .

[0017]

The present invention having the above-mentioned structure has the following effects. Power transmission belt 8 stretched
Since 5 is mounted in the pulley groove of the pulleys 83 and 84 in an appropriate state, sliding between the pulleys 83 and 84 and the power transmission belt 85 is small, and as a result, the power transmission belt 85 is worn. It becomes difficult.

That is, regarding the curve conveyor of the type in which the driving force of the chain 4 is transmitted to the conveyor belt 2 via the power transmission belt 85, it is possible to provide a curve conveyor in which the power transmission belt 85 is not easily worn.

[Brief description of drawings]

FIG. 1 is a plan view of a curved conveyor of the invention of this application.

FIG. 2 is a sectional view taken along line AA of FIG.

3 is a sectional view taken along line BB of FIG.

FIG. 4 is an explanatory view of a transmission unit that connects a chain and a conveyor belt in the curve conveyor.

FIG. 5 is an explanatory diagram of a chain used in the curve conveyor.

FIG. 6 is a plan view of a conventional curve conveyor.

7 is a sectional view taken along line CC of FIG.

FIG. 8 is an explanatory view of a transmission means that connects a chain and a conveyor belt in a conventional curve conveyor.

[Explanation of symbols]

 1 Free Roller 2 Transport Belt 4 Chain 5 Guide 83 Pulley 84 Pulley 40 Pin Link Plate 41 Roller Link Plate 49 Vertical Tongue 50 Vertical Piece

Claims (3)

[Claims] 1. Free rollers 1, 1 arranged at a predetermined angular interval, a conveyor belt 2 stretched between the free rollers 1, 1 and provided in an outer peripheral area of the conveyor belt 2. A looped chain 4, a guide 5 for constraining the plane trajectory of the chain 4 along the outer peripheral edge of the conveyor belt 2, and a pulley 83 attached to the chain 4 side via a bracket , A pulley 84 attached to the conveyor belt 2, the pulley 83 and the pulley 8
4 is composed of a power transmission belt 85 stretched between each other, and the axes of the pulleys 83 and 84 are set vertically and the pulleys 83 and 84 are positioned at the same height. Curve conveyor characterized by. 2. Knife edges 9, 9 arranged at a predetermined angular interval, a conveyor belt 2 stretched between the knife edges 9, 9 and provided in an outer peripheral area of the conveyor belt 2. A looped chain 4, a guide 5 for constraining the plane trajectory of the chain 4 along the outer peripheral edge of the conveyor belt 2, and a pulley 83 attached to the chain 4 side via a bracket , A pulley 84 attached to the conveyor belt 2, the pulley 83 and the pulley 8
4 is composed of a power transmission belt 85 stretched between each other, and the axes of the pulleys 83 and 84 are set vertically and the pulleys 83 and 84 are positioned at the same height. Curve conveyor characterized by. 3. The guide 5 is connected to the outer pin link plate 40 or the roller link plate 4 constituting the chain 4.
A vertical extension piece 49 provided on either one of 1,
From the vertical piece 50, the end portion of which is fixedly arranged so as to face the peripheral surface of the roller that constitutes the chain 4 and is engaged with the vertical extension piece 49 to prevent the chain 4 from moving inward. The curved conveyor according to claim 1 or 2, which is configured.