JPS6327314A - Side drift preventive device for conveyor belt - Google Patents

Abstract

PURPOSE:To allow the stable belt travel without snaking or biased travel by loosely inserting guide pins of pulleys into guiding slots bored on a conveyor belt. CONSTITUTION:A belt 1 has many guiding slots 2... bored at a pitch size L1 at a uniform distance and symmetrically along the longitudinal direction on both ends in the width direction and is suspended across a driving pulley 3 and a driven pulley 3' having the same diameter on the right and left, and the necessary tensile force is applied by an intermediate tension pulley 6. Four pulleys have the same diameter phi and are provided with guide pins 4... with a pitch L2, and these pins 4 are invariably inserted into the slots 2 to restrict the movement of the latter in the width direction during the travel of the belt 1. The number of the guide pulleys 5 is of course changed in response to the whole length of the belt 1.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention relates to an improvement in a belt conveying device for conveying articles, and in particular to an improvement in means for preventing lateral slippage of the belt.

(Prior art and its problems) Belt-type conveying devices, generally known as belt conveyors, have been widely used in various industrial fields. From narrow to wide.

A wide variety of types exist, from long to short lengths, and from one belt to multi-row (parallel) belts that use several belts lined up.

Incidentally, one of the basic requirements for these conveyor belts is that the running belt should not laterally shift (meander or deviate), and for this purpose, the following various ideas have already been proposed. Namely, ■ A method of adding a crown to a pulley.

■ How to attach V guides to both ends of the belt.

■ How to load the automatic travel adjustment device.

etc. is that.

However, there are various problems with the above methods. For example, the method (2) of adding a crown to the pulley weakens the lateral rigidity of the belt, making it easy to cause defects such as cracks, tears, and cracks in the belt. Therefore, there is a limit to the running adjustment effect of this method.The method of (■) pasting V guides on both ends of the belt in the width direction is also a commonly used countermeasure.
The guide easily peels off and has poor durability. If operation is continued with the five guides peeled off, the belt life will be shortened.

In addition, in both methods (1) and (0) above, the need to replace the entire damaged belt is a practical problem that cannot be overlooked. Finally, in method (2), the automatic travel adjustment device itself is very expensive, so its practicality is clearly limited.

(Object of the Invention) In view of the above circumstances, the present invention aims to prevent meandering and deviation in a conveying means using pulleys and a flat belt, regardless of belt width, length, and belt hooking direction. It is an object of the present invention to provide a practical means for preventing lateral slippage that can effectively prevent slippage.

(Means for achieving the object) In order to achieve the above object, the conveyor belt lateral slip prevention device according to the present invention is provided at both ends or one end of the conveyor belt in the longitudinal direction. It is characterized in that it consists of a belt body having guide slots regularly bored along the belt body, and a tensioning boot with guide pins aligned with the guide slots of the belt body.

If the double needle is used, the present invention can be realized as shown in FIG. 1 and FIG.
Referring to the figure, regular guide slots (2, 2...) are bored at both ends or one end in the width direction of the conveyor belt (1) over the entire length of the belt. A guide pin corresponding to the pitch between the guide slots is installed in the drive pulley ■ and the driven pulley (3゛) on which the belt is stretched, and the guide pin ■ corresponds to the pitch between the guide slots. This is an attempt to prevent the sideways slippage of (1) (Bell) by making it appear. Here, insert the guide pin (
D is tensioning pulleys (3 and 3') at both ends of the belt.
Although it is absolutely necessary for
and guide pulley ■ are not necessarily required.

In the above-mentioned mounting according to the invention, the transmission force necessary to convey the object to be conveyed (A) is obtained by the frictional force between the bell 1) and the drive boob 9■. Therefore, unlike a sprocket in a projector, a camera, or a chain drive, the guide pin 0 of the pulley only needs to be loosely fitted into the guide slot (2) to simply restrict the stray movement along the width direction of the belt (1).

On the contrary, if the length of the slot is too short, the inside of the pin may not be able to enter the slot (0 or Unreasonable force may be applied to the inner wall of the slot.
There is a risk that you will not be able to achieve your original purpose. On the other hand, if the length of the slot (1) is sufficiently long, the pin 0 will enter the slot regardless of the deviation of the pinch (L+) between the slots, and will be located within the slot without any force ( (relatively sliding within the slot).

Note that the main guide slot (0 pitch (Ll) and its width (W) and intersecting length) depends on the weight of the conveyed object, the width, thickness, and material of the belt, and how the belt is hung. Randomly selected considering design factors. The slots (2) are normally arranged on both the left and right sides of the belt at equal intervals along the longitudinal direction as shown in Fig. 2, but if desired, the slots (2) may be arranged in a zigzag pattern as shown in Fig. 8. In this case, the guide pins (1) at both ends of the pulley need to be offset by half a pitch. Further, depending on the case, substantial effects can be expected even if the main slot is arranged only on one side of the belt.

The type and material of the belt used in the device of the present invention is arbitrary, but if the belt is thin and there is a concern that the belt may tear or crack due to the slots, or if the slots are not perforated in the belt, such as in a planted belt, etc. In cases where separation is likely to occur in the living room, the periphery of the guide throat 7 may be reinforced with a reinforcing material (eyelets, etc.) as shown in FIG.

In the present invention, the guide pins of pulley ① include the guide slots for the belt (1) and the guide pins for each pulley (3.
In order to smooth the fit with the guide pins (4, 4, . . . ) and 6), conical or truncated conical shapes shown in FIGS. 5 to 7 are preferably used. The height h) of the wooden guide pin ■ should be slightly higher than the thickness (1) of the belt (1). In addition, it is preferable that the diameter of the lower part (φdz) of the pin be equal to the width (W) of the guide slot ■, and in the case of a truncated cone, the diameter of the upper part (φd+) should be the same as the diameter of the lower part (φ
It is desirable to make the bottle much smaller than d2) so that the bottle can easily enter the guide slot (2) of the belt.

The number of guide pins 6) is based on the diameter of the pulley ■ and the pitch of the holes in the guide slot (Ll), and the pitch of the holes in the belt (Ll) and the pitch of the guide pins in the boot (Ll).
are determined so that they are the same.

(Function) In the belt-type conveyance means of the present invention, the guide pin of the tensioning pulley fits loosely into the guide slot bored in the conveyance belt and constantly regulates the running direction of the belt, resulting in meandering and unevenness. By making it possible for the belt to run stably without running, conveyance efficiency is increased, and at the same time, belt fatigue is drastically reduced, and the life of the belt is greatly extended.

(Example) Hereinafter, an example of embodying the invention will be explained using an example, but this example is of course for illustrative purposes and is not intended to limit the spirit of the invention.

FIGS. 1 and 2 are a plan view and a side view of a conventional conveying device according to the present invention.

In the drawing, the belt 0) has a large number of guiding slots (2, 2, etc.) bored at equal intervals and symmetrically with a pitch dimension (Ll) along the length at both ends in the width direction. This thing consists of left and right driving pulleys of equal diameter (■) and a driven pulley (
The frame is passed between 3"), and the required tension is given by the intermediate tension pulley ■.The intermediate symbol ■ indicates the idler pulley for guiding, and the symbol ■ indicates the running direction of the belt 0). The guide roll for modification, and the symbol (■) mean a load-supporting plate.

The above four pulleys are each given the same diameter (small 0), and each has a guide pin (4,40 fist) with a pitch (Ll).
While the belt (1) is running, these pins always fit into the slots (1) and restrict the movement of the latter in the width direction. In addition, the number of guide pulleys is based on Changen Bell)
(1) Varies depending on the total length. Note that although the illustrated conveyor is a horizontal type, the same applies to inclined or vertical conveyors.

(Effects) As explained above, the present invention can prevent fins from lateral deviation phenomena such as meandering or deviation that tend to occur in belt conveying devices, and can also provide an innovative means for extending the life of the belt. It is an important contribution to all industries related to conveyor transport.

[Brief explanation of the drawing]

Figures 1 and 2 are a plan view and a side view showing the prototype of the present invention for a conventional conveying device, Figure 3 is a cutaway perspective view of the belt in the previous two figures, and Figure 4 is a partially enlarged view of the belt. A plan view, FIGS. 5 to 7 are front and side views of pulleys with different pins, FIG. 8 is a view similar to FIG. 4 showing another arrangement of slots, and FIG. The figures are partial plan views (A) and (A) showing an example of reinforcing means for the guide slot portion, and the line χ-
The meanings of the main symbols in each figure, which is a cross-sectional view (B) along the X, are as follows: □ 1: Belt; -2.1 guiding slot; ...9: 2 reinforcing member; 3: Drive pulley, 3°: driven pulley, 5 guide pulley, 6: tension pulley; 4: guide pin of pulleys (3, 3', 5 and 6); 4a: upper end of 4; 7: guide roll, 8 : Support plate; A: Object to be transported. Figure 1 Figure 7

Claims (4)

[Claims] (1) A belt main body having guide slots regularly bored along the entire longitudinal length of the belt at both ends or one end in the width direction of the conveyor belt, and a guide pin aligned with the guide slots of the main body. A conveyor belt lateral slip prevention device comprising a tensioning pulley. (2) The device according to claim 1, wherein the guiding slots are provided symmetrically or staggered at both ends of the belt. (3) The device according to claim 1 or 2, wherein the guide slot is reinforced by an eyelet. (4) The conveying device according to claim 1, wherein the guide pin of the guide pin-shaped pulley has a conical shape or a truncated conical shape.