JP2007229017A - Circulation conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a circulation conveyor capable of making a receiving plate 23 and a conveyor chain 2 sanitary and facilitating cleaning of the conveyor chain and a groove through which the conveyor chain passes by easily detaching the receiving plate 23 and the conveyor chain 2 to easily wash the receiving plate 23 and the conveyor chain 2. <P>SOLUTION: The circulation conveyor comprises the receiving plate 23 and the conveyor chain 2 for circulating the receiving plate. A shaft rod is inserted into the conveyor chain in which adjacent links are superimposed on each other, and an O-ring 25 is attached to the lower end of the shaft rod 22. The shaft rod is detachable from the links by locking the O-ring to the lower edge of the links. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a circulating and conveying apparatus suitably used for rotating sushi or the like that circulates and conveys dishes or the like on which sushi is placed, for example.

Conventionally, as this kind of circulating transport device, a plurality of receiving plates and a transport chain for circulating these receiving plates are provided, and the transport chain is placed by placing a dish on which food such as sushi is placed on the receiving plate. There is one in which each cooked food is sequentially conveyed and provided in front of the customer by being driven to rotate (see Patent Document 1).
JP 2005-192661 A

  In the above circulating and conveying apparatus, a split pin is used for connecting the receiving plate to the transfer chain, and the split pin is inserted into an end portion protruding from the transfer chain of the shaft extending from the receiving plate, whereby the receiving plate and the transfer chain are inserted. Was linked to. For this reason, a part of food, garbage, etc. are caught by the split pin, and it becomes easy to become unsanitary. In addition, especially when used for rotating sushi and the like, the receiving plate is preferably removed from the transport chain from a hygienic point of view and frequently washed, and further, food residues are likely to enter the grooves through which the transport chain passes. From this point, it is often necessary to remove the transport chain and clean it. However, when connecting with a split pin as in the prior art, it is difficult to remove or insert the split pin from the shaft rod, and it is difficult to remove the receiving plate from the transport chain. Moreover, although the shaft rod and the link of the transport chain have been fixed by an interference fit, it has been difficult to remove.

  Therefore, the present invention is hygienic because dust and the like are less likely to adhere to the connecting portion between the receiving plate and the transport chain, and the receiving plate can be easily detached from the transport chain, and the receiving plate is cleaned. And it aims at providing the circulation conveyance apparatus which is easy to clean the conveyance chain and the groove | channel which a conveyance chain passes.

  In order to achieve the above object, the present invention is a circulatory conveying device comprising a receiving plate and a conveying chain that circulates the receiving plate, and the conveying chain overlaps adjacent links, and a shaft rod is inserted, An O-ring is attached to a lower end portion of the shaft rod, and the shaft rod is detachably attached to the link by engaging the O-ring with a lower edge of the link.

  By using the O-ring in this manner, the shaft hole on which the O-ring is attached can be mounted on the conveying chain while elastically deforming the O-ring compared to the case of using a conventional split pin or the case of an interference fit. By removing or inserting from the shaft, the attachment and removal of the shaft rod from the transfer chain is simplified, and the receiving plate can be easily detached and attached to the transfer chain. It is convenient for cleaning the groove that passes. Moreover, since dust etc. are hard to be caught compared with a split pin, it is excellent in hygiene.

In one embodiment of the present invention, an annular groove having a depth smaller than the cross-sectional diameter of the O-ring and an axial length larger than the cross-sectional diameter of the O-ring is formed in the mounting portion of the O-ring of the shaft rod. In this way, when the shaft rod is inserted or removed, the O-ring is deformed flat in the annular groove, and after passing through, the O-ring is restored and its outer diameter is locked to the lower end of the link. In addition, the O-ring can be securely held on the shaft rod.
Further, preferably, when the shaft rod is inserted to the base end, the O-ring is in the groove and is locked to the lower edge of the link, and the O-ring is partially deformed. . By doing in this way, the shakiness of the shaft rod in the vertical direction is prevented, and the O-ring is easily deformed in the contracting direction, so that it can be easily detached.

  According to the circulating and conveying apparatus according to the above-described invention, the receiving plate can be easily detached from the conveying chain, which is convenient for cleaning work of the receiving plate and the link and the cleaning of the groove of the conveying chain.

  Hereinafter, a circulating conveyance device according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing the overall structure of a circulating and conveying apparatus according to an embodiment of the present invention, FIG. 2 is a side sectional view of the main part, and FIG. 3 is a longitudinal sectional view. In the figure, an example of a circulating transport device used for rotating sushi is shown. An elongated oval pedestal 1 supported by a plurality of legs 10, a groove 3 formed on the top, and this groove A crescent chain 2 which is an endless transport chain disposed so as to be capable of rotating in the interior 3 is provided, and a display plate 11 is erected in the center of the chain 2 on the cradle 1. As long as it is requested | required that a conveyance chain will be removed as a circulation conveyance apparatus, not only rotation life but the case where a sample product is exhibited is included. Further, the configuration of the link is not limited to the example of FIG. 2, but also includes the case of other types of links such as FIG. 6 and FIG.

  As shown in FIG. 2, the crescent chain 2 includes a large number of links 21 that are substantially U-shaped in a side view, and a shaft 22 that extends from a receiving plate 23 and connects the links 21 to each other. A part of the connecting shaft 22 protrudes upward from the link 21, and a receiving plate 23 having a substantially crescent shape in plan view is attached to the protruding end. The crescent chain 2 is hung on a drive sprocket 20 provided at one end in the longitudinal direction of the cradle 1, and the crescent chain 2 is rotated by driving the sprocket 20.

4A and 4B show a part of the Crescent Chain 2, wherein FIG. 5A is a side view, FIG. 5B is a bottom view seen from below, FIG. 5 is a longitudinal sectional view of the main part, and FIG. It is sectional drawing which expands and shows the attachment part. As shown in these drawings, an annular groove 24 is formed at the lower end of the connecting shaft 22 attached to the receiving plate 23.
An O-ring 25 is inserted into the groove 24, and the connecting shaft 22 to which the O-ring 25 is attached is inserted into an insertion hole 26 formed in the upper and lower link pieces 21 a and 21 a of the link 21. By locking the portion to the lower edge of the insertion hole 26 of the lower link piece 21a, the connecting shaft 22 is prevented from coming off from the link 21 via the O-ring 25, and both are connected.
The groove 24 is formed with an annular groove whose depth is smaller than the cross-sectional diameter in the unloaded state of the O-ring and whose axial length is larger than the cross-sectional diameter in the unloaded state of the O-ring. As a result, when the shaft rod is inserted or removed and when the O-ring is at the inner surface position of the insertion hole 26, the O-ring has a flat cross section that is long in the axial direction in the annular groove. After deformation and penetration, the O-ring is restored to a circular cross-section and its outer diameter is locked to the lower end of the insertion hole 26 of the link, so that the O-ring can be securely held on the shaft rod.
In the example of FIG. 6, the lower end of the insertion hole 26 of the lower link piece 21a is formed in the seating portion 26a, and a part of the O-ring 25 is locked to the lower edge of this seating portion. As the O-ring 25, for example, a natural rubber, or one made of a synthetic rubber having high elasticity such as EP, IIR, nitro rubber, fluorine rubber, or silicon rubber is preferably used.

  When the link 21 is connected by the connecting shaft 22, the O-ring 25 is deformed in the groove 24, the connecting shaft 22 is press-fitted into the insertion hole 26, and after the press-fitting, the link 21 is removed from the lower end of the insertion hole 26. As shown in FIG. 5, when the O-ring 25 is elastically restored, a part of the O-ring 25 is locked to the seating portion 26a which is the lower edge of the insertion hole 26 formed in the lower link piece 21a.

  When removing the receiving plate 23 from the crescent chain 2, the connecting shaft 22 is forcibly pulled upward. Then, the connecting shaft 22 is pulled upward from the insertion hole 26 of the link 21 while the O-ring 25 is deformed in the groove 24. At this time, when the counterbore 26 a is formed around the lower edge of the insertion hole 26, the connecting shaft 22 can be easily pulled out from the insertion hole 26. In this way, when the receiving plate 23 and the link 21 are washed, the receiving plate 23 can be taken out from the crescent chain 2. Further, after cleaning, contrary to the case described above, the connecting shaft 22 in which the O-ring 25 is fitted is press-fitted downward from above the insertion hole 26 of the link 21 so that a part of the O-ring 25 is connected to the lower link. It latches on the lower edge of the insertion hole 26 provided in the piece 21a. At this time, the position of the groove may be set so that the O-ring 25 is restored to the unloaded state, but it is preferable that the position of the groove is set so that a part of the deformation of the O-ring remains. As a result, the connecting shaft 22 is positioned in the vertical direction, noise generation due to rattling is prevented, and detachment is facilitated.

  As described above, by using the O-ring 25 and fitting it into the groove 24 of the connecting shaft 22 to connect the connecting shaft 22 and the link 21, compared to the case of using a conventional split pin, The connecting shaft 22 can be easily attached to and detached from the link 21, that is, the receiving plate 23 can be easily detached from and attached to the crescent chain 2, and the receiving plate 23 and the link can be easily cleaned and disassembled and transported. The groove where the chain runs can be easily cleaned.

It is a perspective view which shows the whole structure of the circulation conveying apparatus concerning one Embodiment of this invention. It is a sectional side view of the principal part. It is a longitudinal cross-sectional view of the principal part. A part of Crescent Chien is shown, (A) is a side view and (B) is a bottom view. It is a longitudinal cross-sectional view of the principal part. It is sectional drawing which expands and shows the attachment part of an O-ring. It is a figure which shows the other example of a conveyance chain, (A) is a side view, (B) is a bottom view. It is a figure which shows the further another example of a conveyance chain, (A) is a side view, (B) is a bottom view.

Explanation of symbols

2 Transport Chain (Crescent Chain)
22 Shaft (connecting shaft)
23 receiving plate 24 annular groove 25 O-ring 26 insertion hole

Claims (3)

  A circulating and conveying apparatus comprising a receiving plate and a conveying chain for circulating the receiving plate, wherein the conveying chain has adjacent links overlapped and a shaft rod is inserted, and an O-ring is attached to the lower end of the shaft rod. The circulating conveyance device is characterized in that the shaft ring is detachable from the link by locking the O-ring to the lower edge of the link.   2. The circulating transfer apparatus according to claim 1, wherein an annular groove having a depth smaller than a cross-sectional diameter of the O-ring and a length in the axial direction larger than the cross-sectional diameter of the O-ring is formed at an attachment portion of the O-ring of the shaft rod.   In Claim 2, when the shaft rod is inserted to the base end, the O-ring is in the groove and is locked to the lower edge of the link, and a part of the deformation of the O-ring remains. Circulating transfer device.

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