JP2529344Y2 - Braking mechanism of transported article supporting roller by ring-shaped elastic body - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake mechanism for a product supporting roller provided on a conveyor chain capable of transporting and accumulating a product.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 4 to 6, a conveyor chain of this type is provided with a conveyed object W (see FIG. 6) on chains 11, 12, and 13 running on rails R (see FIG. 6). Are provided.
Each roller 14, 15, 16 is connected to the inner link 1 of the chain.
It is provided at the outer ends of connecting shafts 23, 24 and 25 connecting the outer links 7, 21 and 22 with the outer links 20, 21 and 22. During the transfer of the conveyed material, it is hardly rotated because the braking is applied.
When the goods are stopped and accumulated (accumulated), the chains 11, 1 are rotated while rotating below the goods.
It passes along with 2,13. Roller 1
The rotations of 4, 15, and 16 are performed by slip rotation against the braking force.

The conveyor support roller 14 of the conveyor chain 31 shown in FIG. 4 is made of plastic having a high friction coefficient, and is configured to slip over the braking mechanism formed between the conveyor shaft 31 and the connecting shaft 23. . The support roller 15 of the conveyor chain 32 shown in FIG. 5 is provided between the inner spring 34 and the outer surface of the outer link 21 and the roller 1.
The slip rotation is achieved by overcoming the braking mechanism formed between the stop ring 5 and the retaining ring 26. The support roller 16 of the conveyor chain 33 shown in FIG.
Slip rotation is achieved by overcoming a braking mechanism formed between the ring and a washer 36 provided at one end of the connecting shaft 25 and between the outer link 22 and the roller 16.

[0004]

However, each of such braking mechanisms has the following problems. (1) In the braking mechanism shown in FIG. 4, since the roller is made of plastic having a high friction coefficient, a slip noise may be generated when the roller rotates in a slip. In addition, when the oil injected into the chain is transmitted to the connecting shaft, the frictional resistance is reduced, and even when the conveyed object is being conveyed, it may run idle and the conveyed object may not be conveyed. (2) In the braking mechanism shown in FIG. 5, since the spring is subjected to the heat treatment, the length is not constant due to the distortion, the elasticity varies, and the roller may not slip and rotate. (3) In the braking mechanism shown in FIG. 6, since the O-ring is sandwiched between the roller and the washer, a shearing force is applied to the O-ring every time the roller slips, causing torsion, abrasion, damage, and the like. Sometimes.

[0005]

According to the present invention, first, at least a pair of article supporting rollers provided with connecting pins for connecting an inner link and an outer link of a chain in a direction of separating the rollers. Secondly, the outer peripheral corners of at least one pair of transported article supporting rollers provided on a connecting pin for connecting the inner link and the outer link of the chain are cut off by a braking mechanism having a ring-shaped elastic body for urging. This problem has been solved by a braking mechanism having a V-shaped groove formed between rollers and a ring-shaped elastic body for pressing the groove.

[0006]

The pair of rollers in the first braking mechanism receive a biasing force in a direction away from each other by the ring-shaped elastic body, and are pressed against the lateral end member of the chain. For this reason,
The roller is stopped from rotating and runs integrally with the chain while supporting the conveyed object. When the conveyed object is stopped, the pair of rollers slips with respect to the chain integrally with the elastic body, and passes under the conveyed object together with the chain.

[0007] A pair of rollers in the second braking mechanism is
The ring-shaped elastic body is separated by the component force generated by pressing the V-groove, and is similarly pressed against the end member of the chain. For this reason, the roller is stopped from rotating and travels integrally with the chain while supporting the conveyed object. When the conveyed object is stopped, the pair of rollers slips with respect to the chain integrally with the elastic body, and passes under the conveyed object together with the chain.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. The conveyor chain 41 (see FIG. 1)
And a pair of transported article support rollers 4 provided on the chain 42 to support the transported article W.
3, 44. This conveyor chain 41
Has a function of transporting and accumulating a transported object. A pair of rollers 43 and 44
Is a plastic roller having excellent self-lubricating properties. The roller is rotatably provided at an outer end of a connecting shaft 47 connecting the inner link 45 and the outer link 46 of the chain 42, and is detached from the connecting shaft 47 by a retaining ring 48. It is kept so that there is no.

On both surfaces of the pair of rollers 43, 44, small-diameter portions 51, 51 formed by cutting off the outer corners of the rollers project. A groove 49 having a rectangular cross section is formed between the pair of side rollers 43 and 44 by abutment of the small diameter portions 51 and 51.
Are formed. The groove 49 is made of a nitrile material.
Further, an O-ring (elastic body) 50 having a dimension and a shape based on the JIS standard is provided. The O-ring 50 is sandwiched between the pair of rollers 43 and 44 and
Are biased in the separating direction, and one roller 43 is pressed against an outer link (lateral end member) 46 of the chain 42 and the other roller 44 is pressed against a stop ring (lateral end member) 48, respectively. The inner diameter of the O-ring 50 is not necessarily
It is not necessary to have a value that allows the pair of rollers 43 and 44 to be biased in a direction in which the pair of rollers 43 and 44 are separated from each other. The groove 49 is not always necessary, and the O-ring may be simply arranged so as to be sandwiched between the pair of rollers 43 and 44.

Next, the operation will be described. A pair of rollers 43,
The 44 is urged by the elasticity of the O-ring 50 in a direction away from each other and pressed against the outer link 46 and the stop ring 48. For this reason, the pair of rollers 43 and 44 are normally stopped from rotating by friction, and run integrally with the chain 42 while supporting the transported object W. When the conveyed product is stopped by a stopper (not shown) in the conveyance line,
The pair of rollers 43 and 44 are slipped with respect to the chain 42 and the stop ring 48 integrally with the O-ring 50, and pass under the conveyed object W together with the chain 42.

Next, a braking mechanism according to another embodiment will be described. At the outer corners of both surfaces of the pair of rollers 143 and 144 in FIG.
152 are provided. These tapered portions 152 and 15
2, a groove 153 having a V-shaped cross section is formed between the pair of rollers 143 and 144. An O-ring (ring-shaped elastic body) 150 is inserted into the V-shaped groove 153 in a state where the O-ring 150 is expanded in the diameter direction.

The O-ring 150 is assembled in such a manner that the roller 152 of the chain 142 is assembled on the connecting shaft 147 and then the jig is used until the other roller 152 is assembled. And an integration method to keep the
The roller 152 on the chain 142, the O-ring 150, and the other roller 152 are assembled into the connecting shaft 147 in this order, and when the stop ring 48 is assembled, the other method is to press the other roller 152 to expand the O-ring 150. is there. The O-ring 150 presses the tapered portions 152 , 152 in an attempt to contract inward by elasticity, and the connecting shaft 14 is pressed.
7, one roller 14 is driven by the component force generated in the axial direction.
3 is pressed against the chain 142, and the other roller 144 is pressed against the stop ring 48.

The rollers 143 and 144 are also
2 is pressed against the stop ring 148, stopped by friction, and conveys the article W while supporting it. When the transported object W is stopped, the pair of rollers 143 and 144 are integrated with the O-ring 150 and the chain 142 and the stop ring 1.
48, and slips below the transported object W together with the chain 142.

Finally, a braking mechanism according to another embodiment shown in FIG. 3 will be described. On both surfaces of the pair of rollers 243 and 244, small-diameter portions 251 and 251 formed by cutting off the outer corners of the rollers 243 and 244 protrude. Further, tapered portions 252 and 252 are formed at the outer corners. A groove 253 having a trapezoidal cross section is formed between the pair of rollers 243 and 244 by abutment of the small diameter portions 251 and 251.

An O-ring (ring-shaped elastic body) 250 is fitted into the trapezoidal groove 253 in a state of being expanded in the radial direction. This O-ring 250 is also used for the O-ring 15.
0 is incorporated in the same manner. The O-ring 250 presses the tapered portions 252 and 252 by contracting inward by elasticity, and stops one roller 243 on the chain 242 and the other roller 244 by a component force generated in the axial direction of the connection shaft 247. Ring 2
48. These rollers 243, 24
4 is also pressed against the chain 242 and the retaining ring 248, is stopped from rotating by friction, and transports the transported object while supporting it. When the transported object is stopped, a pair of rollers 243,
244 is a chain 142 integrated with the O-ring 250.
And the stopper ring 248, and slips below the conveyed object together with the chain 242.

The chains 142 and 242 of the conveyor chains 141 and 241 shown in FIGS. 2 and 3 have the same structure as the chain 42 of the conveyor chain 41 shown in FIG. 2, the description of the structure is omitted. Also, the O-rings 50, 150, 250 in the above embodiments are simply ring-shaped rubbers,
Alternatively, a resin ring having elasticity may be used.
The braking force can be adjusted by increasing or decreasing the number of rollers biased by the ring-shaped elastic body.

[0017]

According to the braking mechanism of the first and second aspects, the following effects can be obtained. (1) Since the ring-shaped elastic body rotates integrally with the pair of rollers and the pair of rollers rarely slips, it is possible to prevent twisting, abrasion, damage, and the like. As a result, substantially constant elasticity can be maintained for a long time, and stable braking characteristics can be obtained. (2) Since the side surface of the roller contacts the lateral end member of the chain, a braking function can be obtained even with a roller having a low friction coefficient. For this reason, it is possible to prevent the occurrence of slip noise of the rollers. (3) In the case of the braking mechanism of the third aspect, by using a standard O-ring, a variation in elasticity is small, and a stable braking characteristic can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of a conveyor chain provided with a braking mechanism according to the present invention, which is a cross-sectional view as a whole.

FIG. 2 is a front view of a conveyor chain provided with a braking mechanism according to another embodiment, and is a diagram showing the entirety thereof in cross section.

FIG. 3 is a front view of a conveyor chain provided with a side brake according to another embodiment, and is a diagram showing the entirety thereof in cross section.

FIG. 4 is a plan view of a conveyor chain having a conventional braking mechanism, a part of which is shown in cross section.

FIG. 5 is a plan view of a conveyor chain having a conventional braking mechanism, a part of which is shown in cross section.

FIG. 6 is a front view of a conveyor chain having a conventional braking mechanism, a part of which is shown in cross section.

[Explanation of symbols]

42, 142, 242 Chains 43, 44, 143, 144, 243, 244 Conveyance support rollers 45, 145, 245 Inner links 46, 146, 246 Outer links 47, 147, 247 Connecting shafts 50, 150, 250 O-ring ( Ring-shaped elastic body) 153 V-shaped groove 253 Trapezoidal groove (V-shaped groove)

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Masaaki Ikeda 4-17-96, Tsurumi-ku, Tsurumi-ku, Osaka-shi, Osaka Tsubakimoto Chain Co., Ltd. (72) Katsutoshi Shibayama 4--17, Tsurumi, Tsurumi-ku, Osaka-shi, Osaka No. 96 Inside Tsubakimoto Chain Co., Ltd. (56) References Japanese Utility Model 1987-183611 (JP, U)

Claims (3)

(57) [Scope of request for utility model registration] An at least one pair of conveying support rollers provided on a connecting pin for connecting an inner link and an outer link of a chain has a ring elastic body for urging the rollers in a direction to separate the rollers. A braking mechanism for the transported article supporting roller. 2. A V-shape formed by cutting off the outer peripheral corners of at least one pair of conveyance support rollers provided on a connecting pin connecting an inner link and an outer link of a chain.
A braking mechanism for a transported article supporting roller, comprising a ring-shaped elastic body that presses the groove in the U-shaped groove. 3. The elastic body according to claim 1, wherein the elastic body is an O-ring.
Or the braking mechanism of the transported article supporting roller according to 2.