KR100520987B1 - Self-lubricated chain apparatus - Google Patents

Abstract

The present invention relates to a chain, comprising: at least one inner link plate having holes at both ends; One or more first bushings each press-fitted into holes formed at both ends of the inner link plate; One or more rollers rotatably mounted to an outer circumferential surface of the first bushing; At least one outer link plate having holes at both ends and connected to overlap both ends of the inner link plate; And one or more pins rotatably linking the inner link plate and the outer link plate through holes formed in the outer link plate and the first bushing, wherein the roller is formed of a self-lubricating material.

According to the self-lubricating chain described above, by changing the structure of the link portion and using a self-lubricating material at the site forming the friction surface of the link portion, it is possible to provide a chain which does not require lubricating oil in a part where lubricating oil is difficult to penetrate. .

Description

Self-lubricating chain {SELF-LUBRICATED CHAIN APPARATUS}

The present invention relates to a chain, and more particularly to a chain having a self-lubricating function and improved corrosion resistance and wear resistance.

In general, the roller chain is composed of a pair of inner link plates facing each other arranged along the longitudinal direction of the chain by a pair of outer link plates facing each other. Rollers are provided at both ends of the inner link plate, and each outer link overlaps both ends of the adjacent inner link. At this time, the inner and outer link plates are integrally connected to each other on both sides of the chain by pins passing through holes formed in the inner and outer link plates.

The pins are fixed to both ends of the pair of outer link plates, and the pins are rotatably mounted in the bushes protruding between holes corresponding to each other of the inner link plates.

However, in the chain of the above-described manner, it is common that excessive friction is caused between the bush and the pin by the weight of the roller, and the lubricating surface is worn.

In addition, if the chain overturns water or passes through heated steam, such as a sterilizer or a water screen, the chain material is oxidized, resulting in a shortened life, and chemical corrosion if accompanied by acid / alkali etc. This caused a problem that the wear is accelerated.

Therefore, in order to solve the above problems, the lubricant is penetrated between the pins, bushes and rollers to form an oil film on the contact surface of the metal to minimize the contact between the metals and chain life using the chain treated with various corrosion resistant steels. It also extends the length and prevents excessive wear on the chain.

However, when lubricating the chain using lubricating oil, a separate lubrication device should be provided. If the lubricating oil is not supplied uniformly, the corrosion and abrasion of the metal will proceed rapidly and the chain such as tensile strength, fatigue strength, durability, etc. Deteriorates the performance and shortens the lifespan.

In addition, even if lubrication is managed by regular lubrication, drop type and brush type lubrication are difficult to penetrate the lubricating oil to the deep part due to the fine gap of the chain, which causes excessive oil supply. There was a problem.

Therefore, the technical problem to be achieved by the present invention is to provide a chain that does not require the supply of lubricating oil to the parts difficult to penetrate the lubricating oil.

In addition, another technical problem to be achieved by the present invention is to provide a chain that can prevent the poor rotation due to the adhesion of the roller and the bush without corrosion.

In addition, another technical problem to be achieved by the present invention is to provide an environmentally friendly chain that can protect the environment by preventing excessive oiling.

In addition, another technical problem to be achieved by the present invention is to provide a chain that can reduce the noise generated when engaging or disengagement with the driving portion and the driven portion of the sprocket coupled to the chain.

Self-lubricating chain according to the present invention for achieving the above object is at least one inner link plate formed with holes at both ends; One or more first bushings each press-fitted into holes formed at both ends of the inner link plate; One or more rollers rotatably mounted to an outer circumferential surface of the first bushing; At least one outer link plate having holes at both ends and connected to overlap both ends of the inner link plate; And one or more pins rotatably linking the inner link plate and the outer link plate through holes formed in the outer link plate and the first bushing, wherein the roller is formed of a self-lubricating material.

Preferably, the method further includes a second bushing interposed between the first bushing and the pin, wherein the second bushing is formed of a self-lubricating material and fixedly inserted into the pin.

Preferably, the self-lubricating material is selected from any one of TP610 and TP601 which will be described later, and the inner link plate and the outer link plate are zinc plated, and the pin and the first bushing are chrome plated.

Preferably, the inner link plate, the outer link plate, the fins and the first bushing are MOS coated.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the self-lubricating chain of the present invention.

1 is a cross-sectional view of a link portion applied to a self-lubricating chain device according to the present invention.

Figure 1 shows a cross-section of the link portion of the chain according to the invention, as shown in Figure 1, the self-lubricating chain is the inner link plate 110, the first bushing 120, the roller 130, the outer link Plate 140, pin 150, and second bushing 160.

The pair of opposing inner link plates 110 overlaps the pair of adjacent opposing outer link plates 140 to form a link. Holes are formed at both ends of the inner link plate 110 and the outer link plate 140, that is, the overlapping portion.

The first bushing 120 is press-fitted and fixed to holes formed at both ends of the inner link plate 110, and a roller 130 is inserted into the outer circumferential surface of the first bushing 120 so as to be disposed on the outer circumferential surface of the first bushing 120. I stir.

The outer link plate 140 overlapping the inner link plate 110 to form a link is connected by the pin 150. That is, the pin 150 penetrates through holes formed at both ends of the outer link plate 140 and the inner link plate 110 to form a link portion. On the outer circumferential surface of the pin 150 is formed a concave end in the longitudinal direction, the second bushing 160 is inserted and fixed.

Accordingly, when the chain is driven by the above configuration, the roller 130 slides on the outer circumferential surface of the first bushing 120, and the pin 150 coupled with the second bushing 160 is the first bushing 120. It slides on the inner circumference of the surface.

A friction surface is formed between the inner circumferential surface of the roller 130 and the outer circumferential surface of the first bushing 120 and the inner circumferential surface of the first bushing 120 and the outer circumferential surface of the second bushing 160 when the chain is driven.

At this time, the roller 130 and the second bushing 160 is formed of a self-lubricating material so that a smooth lubrication action can be made without supply of lubricating oil.

Specifically, the self-lubricating material is a kind of engineering plastic, which is formed of M.C nylon (Monomer Cast Nylon). The M.C nylon is an engineering plastic prepared by polymerization at atmospheric pressure while injecting a liquid monomer formed by mixing a reaction catalyst into a mold.

M.C nylon used in the present invention comprises the main components shown in Table 1 below.

Ingredient content(%) monomer Caprolactam 85 Polymerizer ACTIVATOR 5 CATALYST 5 LUBE made 2 OIL COMPOUND 3 polymer TP-LUBE610

The M.C nylon polymer polymerized by the constituents shown in Table 1 is hereinafter referred to as 'TP-LUBE610'.

The MC nylon polymer has a lower friction coefficient than the conventional MC nylon polymer, and has a feature of allowing self-lubrication by using a LUBE agent as a polymerizing agent, and the MC nylon polymer is produced and sold by Jinil Tech. It is preferred that it is an MC nylon polymer of 'TP-LUBE610'.

Physical properties of the 'TP-LUBE610' are shown in Table 2 below.

Properties unit TP-LUBE610 importance - 1.14 The tensile strength Kg / cm 980-1050 Elongation at Break % 20-80 Tensile modulus ㎏ / ㎠ 32000 Compressive strength ㎏ / ㎠ 940 Rockwell Hardness - R120 Impact strength Kg / cm, 2.54 cm 15-20 Heat deflection temperature ℃ 210-220 Water absorption rate (24 hours underwater saturation) % 0.5-1.0

Meanwhile, the inner link plate 110 and the outer link plate 140 may be formed of carbon steel, and the first bushing 120 and the fin 150 may be formed of alloy steel.

The alloy steel forming the first bushing 120 and the fin 150 may be selected, for example, SCM435.

The inner link plate 110, the outer link plate 140, the first bushing 120, and the pin 150 are heat treated and corrosion resistant.

At this time, preferably by chromium plating or MOS (Methyl Oximino Silane) coating as a corrosion treatment process, even if the chain is used in a high humidity to maintain a high corrosion resistance.

The chain link part shown in FIG. 1 is applicable to all kinds of chains having rollers in the link part, regardless of the type of roller chain and conveyor chain, and is used in all conditions requiring wear resistance, corrosion resistance, and noise reduction. It is possible.

2A and 2B show a top-roller chain as a chain having the linkage structure shown in FIG. 1 as one embodiment of the present invention.

As shown in Figures 2a and 2b, the connection of the inner link plate 210 and the outer link plate 240 is configured in the same way as the link portion shown in Figure 1, the top roller (280) It further comprises a top pin (top pin) (270).

The inner link plate 210 and the outer link plate 240 extend upward between the holes formed at both ends, and additionally a hole into which the top pin 270 is inserted is formed on the outer circumferential surface of the top pin 270. The top roller 280 is inserted and slid.

The width of the top roller 280 is determined based on the width between the inner link plate 210 and the outer link plate 240.

At this time, the top roller 280 is preferably formed of the above-described self-lubricating material. The top-roller 280 of the top-roller chain shown in FIG. 2 is configured to slide directly on the outer circumferential surface of the top-pin 270, but may be configured in the same manner as the cross-sectional view of the link portion shown in FIG. 1. Is self explanatory.

3A and 3B show an attachment chain as a chain having the link structure shown in FIG. 1 as an embodiment of the present invention.

As shown in FIGS. 3A and 3B, the inner link plate 310 and the outer link plate 340 are connected in the same manner as the link unit shown in FIG. 1.

The attachment chain further includes an attachment portion 370 on which a transport plate (not shown) is fixed to one side of the outer link plate 340 and the inner link plate 310.

The transfer plate (not shown) is fixed to the attachment portion 370, and places the workpiece on the upper portion thereof. Therefore, the work object can be moved by driving the attachment chain.

The roller 330 and the second bushing 360 of the attachment chain are formed of the above-described self-lubricating material.

4A and 4B show a pre-flow conveyor chain having the link structure shown in FIG. 1 as one embodiment of the present invention.

As shown in FIGS. 4A and 4B, the inner link plate 410 and the outer link plate 440 of the free flow conveyor chain are connected in the same manner as the link portion shown in FIG. 1.

In one hole formed at both ends of the inner link plate 410, a pair of outer rollers 470 and inner rollers 480 are rotatably coupled to the outer circumferential surface of the first bushing 420, and in the other side of the holes. A pair of outer roller 470 and inner block 490 are rotatably coupled to the outer circumferential surface of the first bushing 420.

At this time, the second bushing 460 press-fitted to the outer circumferential surface of the pin 450 slides in contact with the inner circumferential surface of the first bushing 460, and the first bushing 420 is the outer roller 470 and the inner roller 480. And the inner peripheral surface of the inner block 490 to slide.

At this time, the outer roller 470, the inner roller 480, the inner block 490, and the second bushing is formed of the above-described self-lubricating material so that lubrication is not required and ensures wear resistance and corrosion resistance.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and those of ordinary skill in the art to which the present invention pertains are easily changed and equivalent from the embodiments of the present invention. It includes all changes in the ranges that become.

 According to the self-lubricating chain according to the present invention, by changing the structure of the link portion and using the self-lubricating material in the portion forming the friction surface of the link portion, it is possible to provide a chain that does not require the supply of lubricant to a part where lubricating oil is difficult to penetrate. Can be.

In addition, the self-lubricating chain according to the present invention can provide a chain capable of preventing rotational failure due to fixing without fear of sticking due to corrosion of the roller and bush.

In addition, the self-lubricating chain according to the present invention can provide an environmentally friendly chain that can protect the environment by preventing excessive oiling.

In addition, according to the self-lubricating chain according to the present invention, by forming the friction surface of the link portion of the chain with a self-lubricating material, it is possible to reduce the noise generated when the chain is engaged or disengaged with the driving portion and the driven portion of the sprocket.

1 is a cross-sectional view of a link unit applied to a self-lubricating chain device according to an embodiment of the present invention.

FIG. 2A is a partial cross-sectional view of a top-roller chain according to an embodiment of the present invention having the link structure shown in FIG. 1. FIG.

FIG. 2B is a side view of the top-roller chain of FIG. 2A.

3A is a partial cross-sectional view of an attachment chain according to an embodiment of the present invention having the link structure shown in FIG. 1.

3B is a side view of the attachment chain of FIG. 3A.

4A is a partial cross-sectional view of a free-flow chain according to one embodiment of the present invention having the link structure shown in FIG. 1.

4B is a side view of the pre-flow chain of FIG. 4A.

Claims (23)

At least one inner link plate having holes at both ends; One or more first bushings each press-fitted into holes formed at both ends of the inner link plate; One or more rollers rotatably mounted to an outer circumferential surface of the first bushing; At least one outer link plate having holes at both ends and connected to overlap both ends of the inner link plate; And And at least one pin that rotatably links the inner link plate and the outer link plate through the hole formed in the outer link plate and the first bushing. The roller is a chain device formed of a self-lubricating material. In claim 1, Further comprising a second bushing interposed between the first bushing and the pin, And the second bushing is formed of a self-lubricating material and inserted into and fixed to the pin. In claim 2, The self-lubricating material is a chain device, characterized in that the M.C nylon brand name TP-LUBE610. In claim 2, The inner link plate and the outer link plate are zinc plated, Wherein said pin and said first bushing are chromium plated. In claim 2, And said inner link plate, said outer link plate, said pin and said first bushing are MOS coated. delete delete delete delete At least one inner link plate having holes at both ends; One or more first bushings each press-fitted into holes formed at both ends of the inner link plate; At least one roller rotatably mounted on an outer circumferential surface of the bushing; At least one outer link plate having holes at both ends and connected to overlap both ends of the inner link plate; And At least one pin rotatably linking said inner link plate and said outer link plate through a hole formed in said outer link plate and said bushing; A second bushing interposed between the first bushing and the pin and inserted into and fixed to the pin; A top pin inserted into and fixed to a hole extending upwardly between holes formed at both ends of the outer link plate and the inner link plate; Includes; a top roller is rotatably inserted into the top pin (top pin); And the roller, the second bushing, and the top roller are formed of a self-lubricating material. In claim 10, The self-lubricating material is a top-roller chain device, characterized in that the M.C nylon brand name TP-LUBE610. In claim 11, The inner link plate and the outer link plate are zinc plated, And the pin, the top pin and the first bushing are chrome plated. In claim 11, And the inner link plate, the outer link plate, the pin, the top pin, and the first bushing are MOS coated. At least one inner link plate having holes at both ends; One or more first bushings each press-fitted into holes formed at both ends of the inner link plate; One or more rollers rotatably mounted to an outer circumferential surface of the first bushing; At least one outer link plate having holes at both ends and connected to overlap both ends of the inner link plate; And At least one pin rotatably linking the inner link plate and the outer link plate through a hole formed in the outer link plate and the first bushing; And And at least one attachment portion provided at one side of the inner link plate and the outer link plate. Attachment chain device wherein the roller is formed of a self-lubricating material. The method of claim 14, Further comprising a second bushing interposed between the first bushing and the pin, And the second bushing is formed of a self-lubricating material and is inserted and fixed to the pin. The method of claim 15, The self-lubricating material is a top-roller chain device, characterized in that the M.C nylon brand name 'TP-LUBE610'. The method of claim 16, The inner link plate and the outer link plate are zinc plated, And the pin and the first bushing are chromium plated. The method of claim 16, And the inner link plate, the outer link plate, the pin and the first bushing are MOS coated. At least one inner link plate having holes at both ends; One or more first bushings each press-fitted into holes formed at both ends of the inner link plate; One or more inner blocks rotatably mounted to the first bushing on one side formed in the inner link;  One or more inner rollers rotatably mounted to the first bushing on the other side of the inner link; At least one outer roller rotatably mounted to an outer circumferential surface of the bushing on both sides of the inner roller and the inner block; At least one outer link plate having holes at both ends and connected to overlap both ends of the inner link plate; And And one or more pins rotatably linking the inner link plate and the outer link plate through the holes formed in the outer link plate and the bushing. And the inner roller, the outer roller and the inner block are formed of a self-lubricating material. The method of claim 19, Further comprising a second bushing interposed between the first bushing and the pin, And the second bushing is formed of a self-lubricating material and is inserted into and fixed to the pin. The method of claim 20, The self-lubricating material is a pre-flow conveyor chain device, characterized in that the M.C nylon brand name 'TP-LUBE610'. The method of claim 21, The inner link plate and the outer link plate are zinc plated, And the pin and the first bushing are chrome plated. The method of claim 21, And the inner link plate, the outer link plate, the pin and the first bushing are MOS coated.