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Conveyor belt

a conveyor belt and end-less technology, applied in the direction of conveyors, transportation and packaging, etc., can solve the problems of loss of friction between the pulley and the belt, food particles can become lodged in the joints of the interconnection link, and the belt can be difficult to clean

Inactive Publication Date: 2006-07-06
MOL BELTING SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the problems with such belts is that food particles can become lodged in the joints of the interconnecting links.
Consequently, cleaning the belts can be difficult and may require removing the belt from the conveyor system for special cleaning operations.
One of the problems with such belts is that grease and oil from the food items can migrate to the groove or to the rib, which causes a loss of friction between the pulley and the belt.
Consequently the driving force becomes unstable and unreliable.
This tensioning raises other issues beyond slippage due to oils and contaminants.
In addition, there are additional costs associated with ensuring that the conveyor frame be sufficiently strong enough to handle the normal stresses of the pretensioned belt plus additional stresses caused by loading the belt.
However, the belt is formed from interlocking links and the belt is still under tension.
The problems associated with interlocking links and pretensioning remain.
There are some remaining problems, however.
Assembling a timing belt to a homogeneous belt is costly and the bonding or adhering process is critical.
Failure of the bond increases the risk of contamination and total belt failure.

Method used

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Examples

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Embodiment Construction

[0021] An endless belt 100 according to the invention is seen in FIG. 1 in a typical installation between two sprockets 102 and 103. The sprockets 102, 103 are conventional and they can be any of a number of different forms and sizes. One sprocket 102 is a drive sprocket, the other 103 being an idler or slave sprocket. In this configuration, the upper span 105 of the belt will travel in the direction of arrow 107. Each sprocket 102 or 103 has a number of transverse grooves or sheaves 104 spaced around its circumference. The belt 100 has a plurality of teeth 106 equidistantly spaced from each other on the inside surface 108 of the belt. The teeth 106 engage the sheaves 104 of each sprocket. It will be understood that any given installation may have one, two, or more sprockets for a single endless belt. Also, for any given installation, one or more of the sprockets may be a drive sprocket, as for example sprocket 102, with the other sprocket or sprockets being idler sprockets. It will...

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Abstract

A thermoplastic endless belt has a smooth outer surface substantially free of discontinuities and an inner surface with a plurality of teeth at a given belt pitch. The teeth are adapted to engage a sprocket with circumferentially spaced sheaves at a sprocket pitch greater than the belt pitch. The belt is slightly stretchable so that the sprocket can drive the endless belt when engaging the teeth within a range of load on the belt. The belt is preferred for use in conveyors in food processing industries where the smooth outer surface can transport food items and is easier to clean and keep free of impurities.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of U.S. application Ser. No. 10 / 505,063 filed Aug. 18, 2004, which is a national phase application based on International Application Serial No. PCT / US03 / 03029 filed Feb. 3, 2003, which claims the benefit of U.S. application Ser. No. 60 / 319,133 filed Mar. 5, 2002.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] This invention relates to endless belts for conveyors and, more particularly, to thermoplastic endless belts driven by sprockets. [0004] 2. Description of the Related Art [0005] Low tension, direct drive conveyor belts are typically used in situations where hygiene and cleanliness are critically important. For example, in food processing plants such as those that process meat products for human consumption, low tension, direct drive belt conveyors are used to transport items. Sanitation is critically important and, therefore, the endless belts used in such conveyors are conve...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B65G23/06B29C35/16B29C69/02B65G15/42
CPCB29C35/16B29C47/0021B29C47/0033B29C47/0038B29C47/004B29C47/0057B65G15/42B29C48/08B29C48/13B29C48/001B29C48/0011B29C48/0018
Inventor MOL, EDWARD T.
Owner MOL BELTING SYST