JPH06239435A - Toothed pulley for conveyance - Google Patents

Abstract

PURPOSE:To provide a toothed pulley for conveyance solving various ill conditions generated due to the tooth skipping on the toothed belt side by rapidly eliminating foreign material held up in tooth grooves on the toothed pulley side. CONSTITUTION:The tooth bottom of a tooth 11 provided at the body 10 of a toothed pulley is provided with a slotted groove 12 cut smaller than the dedendum circle diameter D1, and a discharge hole 13 is provided being extended and communicated with the slotted groove 12 while piercing the body 10 from one side end face 15 to the other side end face 16 in the tooth width B direction so that foreign material can be eliminated from the end faces 15, 16 of the body 10 through the discharge hole 13 from the slotted groove 12. At this time, the bore of the discharge hole 13 is enlarged toward the end faces 15, 16 of the body 10 from the center part in the tooth width B direction. The slipoff and elimination of the foreign material is thereby facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor toothed pulley having a function of removing foreign matter existing between tooth spaces when meshing with a toothed belt for conveying articles.

[0002]

2. Description of the Related Art Conventionally, in a food manufacturing conveyor line or the like which operates a toothed belt by meshing with a toothed pulley and conveys articles such as confectionery on the toothed belt surface, powder of confectionery dough is used. In some cases, crumbs after baking are mixed in and intervene in the tooth spaces between the toothed belt and the toothed pulley. If foreign matter such as broken scraps is particularly hardened in continuous operation while staying in the tooth groove on the pulley side, poor meshing occurs with teeth on the toothed belt side, causing so-called "tooth skipping" of the teeth on the toothed belt. Occur. When the tooth jump occurs, the belt itself vibrates due to the impact when returning to the pulley side, which may cause inconvenience such as the conveyed article on the belt dancing and dropping.

[0003]

Therefore, the present invention solves various problems caused by tooth skipping on the toothed belt side by rapidly removing foreign matter accumulated in the tooth groove on the toothed pulley side. It is an object of the present invention to provide a conveyor toothed pulley.

[0004]

A conveyor toothed pulley according to the present invention is provided with a tooth provided on a main body at a root of a tooth, rather than a root circle diameter, when an article is conveyed by an operation by meshing with a toothed belt. Make a small cut-out groove to communicate with the cut-out groove, and extend the discharge hole to extend from one end face to the other end face of the main body in the tooth width direction to extend the discharge hole. After that, it is configured to be removed from the end surface of the main body. Further, in the present invention, it is possible to form the discharge hole by enlarging the hole diameter from the central portion in the tooth width direction toward the end surface of the main body.

[0005]

Operation During operation by meshing with the toothed belt, foreign matter staying in the tooth groove on the toothed pulley side, in particular, enters the discharge hole through the cut groove, and is discharged to the outside from the end face of the main body through the discharge hole. If the discharge hole is formed so as to gradually expand from the center toward both ends, foreign matter will slide off and be easily removed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a conveyor toothed pulley according to the present invention will be described below with reference to the drawings. 1 and 2 show a partial front view and a side sectional view of an embodiment according to the present invention. The main body 10 is provided with teeth 11 made of spur gears having a tooth profile of a predetermined module and a pitch, and the root circle diameter D ₁ of a standard module spur tooth profile (shown by an imaginary line 14 in the figure) is provided at the tooth bottom of the tooth 11.
A cut groove 12 is formed further inward than the cut groove 12. Further, as is apparent from FIG. 2, the cut groove 12
The discharge hole 13 extends in the direction of the tooth width B from the end surface 15 on one side of the main body 10 to the end surface 16 on the other side.
Has been drilled through.

Therefore, in the toothed pulley of the embodiment, during operation by meshing with the toothed belt, foreign matters such as broken dust generated from articles being conveyed by the toothed belt, especially the teeth 11 on the pulley side.
Even if it stays in the tooth space between the tooth 11 and the tooth 11, the foreign matter falls from the cut groove 12 into the discharge hole 13 and is quickly removed from both ends of the discharge hole 13 to the outside of the main body 10.

Further, in the toothed pulley of the embodiment, as shown in FIG. 2, the discharge hole 13 is not simply machined into a straight hole parallel to the pulley axis C--C, but the hole diameter is the central portion of the tooth width B. It is narrow and can be processed by gradually enlarging toward the end faces 15 and 16 of the main body 10. In other words, if the discharge hole 13 is sloped at the expansion angle θ toward both outer ends at a required expansion gradient, the foreign matter is likely to slip off, and the removal is more effective.

[0009]

As described above, in the conveyor toothed pulley according to the present invention, a notch groove is formed in the tooth bottom so as to have a diameter smaller than the diameter of the root circle, and the notch groove is communicated with the notch groove for further discharging. By providing a hole penetrating from one end face to the other end face of the main body in the tooth width direction, foreign matter generated from the conveyed articles etc. stays particularly in the tooth groove on the pulley side during operation by meshing with the toothed belt. Without this, it can be promptly and naturally removed from the cut groove through the discharge hole, and tooth jumping on the toothed belt side can be prevented.

[Brief description of drawings]

FIG. 1 is a partial front view of a conveyor toothed pulley according to an embodiment of the present invention.

FIG. 2 is a side sectional view of an example.

[Explanation of symbols]

 10 Pulley body 11 Teeth 12 Notch groove 13 Discharge hole

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[Procedure amendment]

[Submission date] April 22, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

Claims (2)

[Claims] 1. A toothed pulley that conveys an article by operation by meshing with a toothed belt, wherein a notch groove is formed in a root of a tooth provided in a main body and has a diameter smaller than a root circle diameter. A communication hole is further provided so as to extend from one end face to the other end face of the main body in the tooth width direction on the extension thereof, and foreign matter is removed from the end face of the main body through the discharge hole from the cut groove. Conveyor toothed pulley. 2. The conveyor toothed pulley according to claim 1, wherein the diameter of the discharge hole is increased from the center portion in the tooth width direction toward the end surface of the main body.