JPH05332420A - Conveying toothed pulley - Google Patents

Abstract

PURPOSE:To provide a conveying toothed pulley which overcomes various nonconformities caused by breaking of the teeth of a toothed belt by promptly removing foreign matter remaining in the spaces of the toothed pulley. CONSTITUTION:A guide flange 15 is provided which is joined to the teeth 11 of a pulley main body 10 from both sides of the thickness of the pulley main body 10 and a toothed belt is guided by the guide flange from both sides and is thereby prevented from deviating laterally, and the diameters of the outer and inner peripheries of the circularly formed guide flange are larger than the addendum circle and root circle of the pulley main body, respectively, and a window portion 14 facing the outside of the pulley main body is provided between the inner periphery of the guide flange and the root of the pulley main body and foreign matter is removed through the window portion 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveying toothed pulley having a function of removing foreign matter existing in a tooth groove during driving in meshing with a toothed belt which conveys articles.

[0002]

2. Description of the Related Art Conventionally, in a food production conveyor line or the like in which a toothed belt is driven by meshing with a toothed pulley and conveys articles such as confectionery on the toothed belt surface, powder of confectionary dough is used. In some cases, crumbs after baking are mixed and intervened 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 impact of returning to the pulley side causes the belt to vibrate, causing the inconvenience that the conveyed article on the belt dances and falls.

[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 toothed belt for conveying according to the present invention is a toothed belt which conveys an article by driving by meshing by providing guide flanges which are joined to the teeth on the pulley body side from both sides in the thickness direction. A guide flange on both sides is used to prevent lateral displacement.The outer diameter of the annular guide flange is larger than the tip circle on the pulley body side, and the inner diameter of the guide flange is on the pulley body side. The window is larger than the root circle and is provided between the inner circumference of the guide flange and the bottom of the pulley body to provide a window through the pulley body.

Further, in the present invention, it is possible to provide guide flange teeth having the same pitch and tooth shape as the teeth on the pulley main body and larger than the tip circle on the outer peripheral side of the annularly formed guide flange. Further, according to the present invention, the outer peripheral diameter of the annularly formed guide flange is larger than the tip circle on the pulley body side, and the inner peripheral diameter of the guide flange is equal to or smaller than the tip circle on the pulley body side. The tooth bottom may be formed as an inclined surface that is a downward slope toward the outside, and a part of the lower part of the slope of the inclined surface may be provided with a window through which the inner periphery of the guide flange is seen to the outside of the pulley body.

[0006]

By providing the window portion between the tooth on the pulley body side and the guide flange, the foreign matter accumulated in the tooth groove on the pulley body side is naturally eliminated.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a carrying 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 a first embodiment according to the present invention.
The pulley main body 10 is provided with teeth 11 having a predetermined module and a pitch, and ring-shaped guide flanges 15 are joined to both sides of the teeth 11 indicated by reference numeral t in the thickness direction. In this case, the guide flange 15 is the pulley body 1
Since it is difficult to perform integral molding with No. 0, a structure in which a unit processed by press working or machining is joined to a step provided on the pulley body 10 is generally used.

The guide flange 15 has an outer peripheral diameter D ₁ larger than the tip circle d ₁ of the tooth 11 of the pulley body 10 and an inner peripheral diameter D ₂
Is larger than the root circle d ₂ of the tooth 11. When the guide flanges 15 are joined so as to be applied from both sides in the tooth thickness direction of the teeth 11, only the tooth end portions 12 of the teeth 11 are covered with the guide flanges 15 from the outside, and the adjacent teeth 11 and the teeth 11 are adjacent to each other. The tooth bottom between the bases 13 is seen outside the pulley body 10, and this is formed as a window portion 14 for exclusion.

Therefore, in the first embodiment, since the window 14 is provided between the tooth groove of each tooth 11 on the pulley body 10 side and the guide flange 15, foreign matter accumulated in the tooth groove is accumulated. It can be excluded from the window body 14 to the outside of the pulley main body 10 without using it. As a toothed belt (not shown) that meshes with the teeth 11 and is driven, since the guide flanges 10 stand up and are guided like sidewalls on both sides of the tooth thickness t of the pulley body 10, there is no lateral displacement during driving. ..

Next, FIGS. 3 and 4 show a second embodiment of the present invention.
The partial front view of an Example and its side sectional view are shown. Similarly, ring-shaped guide flanges 25 are joined to both ends in the thickness t direction of the teeth 21 with a predetermined module and pitch provided on the pulley body 20. On the outer peripheral side of the guide flange 25, flange teeth 26 having the same pitch and tooth shape as the teeth 21 of the pulley body 20 and larger than the tip circle d are provided. That is, one tooth 21 on the side of the pulley body 20 is joined from one of the teeth 21 on the side of the guide flange 25, which is formed in the shape of a normal gear, to the tooth 21 on the side of the pulley body 20 like a side wall. The tooth space 22 between the adjacent teeth 21 of the 20 and the teeth 21 is open, this being the first
The window portion referred to in the embodiment is exposed to the outside and has the original shape of the gear.

Therefore, in this second embodiment, since the tooth spaces 22 between the teeth 21 of the pulley body 20 are open, foreign matter accumulated in the tooth spaces 22 can be accumulated in the same manner as conventional gears. Instead, it can be naturally excluded outside the pulley body 20.

Further, FIGS. 5 and 6 show a third embodiment of the present invention.
The partial front view of an Example and its side sectional view are shown. This third
In the embodiment, teeth 31 with a predetermined module and pitch are provided on the outer periphery of the pulley body 30, and adjacent teeth 3
An inclined surface 32 is provided from the tooth bottom portion between the tooth 1 and the tooth 31 to the pulley body 30. The inclined surfaces 32 are provided on both sides in the tooth thickness t direction, and the two inclined surfaces 32, 3 on both sides are provided.
It is formed so as to have a “mountain shape” by 2. Further, ring-shaped guide flanges 35, which are machined alone, are joined to both sides in the tooth thickness t direction like side walls.

The outer diameter D _{3 of the} guide flange 35 is larger than the tip circle d ₃ of the tooth 31 of the pulley body 30, and the inner diameter D ₄ is less than the tip circle d ₄ of the tooth 31 of the pulley body 30. It is molded. Further, the inclined surface 32 provided on the tooth bottom portion of the pulley main body 30 is a downward inclined surface toward the outside,
A part of the lower portion of the inclined surface 32 is made to be a window portion 33 by making it look into the outside of the pulley body 30 from the inner circumference of the guide flange 35. That is, the guide flange 35 covers the entire tooth 31 from the outside like a side wall, and further covers approximately half the length of the inclined surface 32 from the outside. Therefore, the other half of the inclined surface 32 is seen outside as the window 33.

That is, in the third embodiment, the inclined surfaces 32, 32 on both sides are utilized to prevent foreign matter accumulated in the tooth groove on the pulley body 30 side from being accumulated, and the window portion 33 formed by half the inclined surface 32. It can be slid off from the pulley body 30 and naturally removed to the outside of the pulley body 30. Even if the foreign matter does not slide off the inclined surface 32, the foreign matter remaining on the inclined surface 32 is removed by the action of narrowing the toothed belt in the width direction during driving.
Can be forcibly pushed out of the pulley body 30 and discharged.

[0015]

As described above, in the toothed pulley for conveyance according to the present invention, the window portion is provided between the tooth on the pulley body side and the guide flange so that the pulley stays particularly in the tooth groove on the pulley body side. Foreign matter can be promptly and naturally eliminated, 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 a first embodiment of the present invention.

FIG. 2 is a side sectional view of the first embodiment.

FIG. 3 is a partial front view of a conveyor toothed pulley according to a second embodiment of the present invention.

FIG. 4 is a side sectional view of a second embodiment.

FIG. 5 is a partial front view of a conveyor toothed pulley according to a third embodiment of the present invention.

FIG. 6 is a side sectional view of a third embodiment.

[Explanation of symbols]

 10, 20, 30 Pulley body 11, 21, 31 Tooth 14, 33 Window 15, 25, 35 Guide flange 26 Flange tooth 32 Sloping surface

Claims (3)

[Claims] 1. A tooth is provided on the pulley main body side with guide flanges joined from both sides in the thickness direction, and lateral deviation of a toothed belt that conveys articles by driving by meshing is guided by the guide flanges on both sides to prevent it. In the toothed pulley, the outer diameter of the annular guide flange is larger than the tip circle on the pulley body side, and the inner diameter of the guide flange is larger than the root circle on the pulley body side. A conveyor toothed pulley, characterized in that a window portion is provided between the inner circumference and the bottom of the pulley body so as to look outside the pulley body. 2. A conveyor toothed pulley according to claim 1, wherein a guide flange tooth having the same pitch and tooth shape as the tooth on the pulley body side and larger than the tip circle is provided on the outer peripheral side of the annularly formed guide flange. .. 3. A tooth on the pulley body side, wherein the outer diameter of the annularly formed guide flange is larger than the tooth tip circle on the pulley body side, and the inner diameter of the guide flange is less than or equal to the tooth tip circle on the pulley body side. The carrier tooth according to claim 1, wherein the bottom portion is formed as an inclined surface which is a downward slope toward the outside, and a part of the lower portion of the inclined surface of the inclined surface is provided with a window portion through which the inside of the guide flange is seen to the outside of the pulley body. Pulley with.