JPH0433211Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a conveyor for a Shrink packaging device that conveys articles while rotating them. The present invention relates to a conveyor that rotates and conveys articles in a high-temperature atmosphere when the tubes are passed through a superheating furnace that heat-shrinks the tubes in shrink packaging that shrinks the tubes along the outer shape of the bottle.

(b) Prior art When performing so-called shrink packaging, in which a heat shrink tube is attached around a bottle and the tube is shrunk along the outer shape of the bottle, conventionally, the bottle with the tube attached to the outer periphery is placed in a superheating furnace using a conveyor. The tube is heated through the tube. In this case, it is necessary to heat the tube evenly in order to produce a clean product, and for this reason, a device for rotating the bottle when passing it through the superheating furnace was proposed in Utility Application No. 62-5635 filed by the present applicant. Jitsukai Showa 63-
114903)).

However, in both cases, the inside of the heating furnace is a high-temperature atmosphere, and in the device provided by the above-mentioned utility model registration application, the device for rotating the bottle must pass through the heating furnace, so it is not heated by the heating furnace. This resulted in the problem of shortening the life of the device.

(c) Problems to be solved by the invention The problem to be solved by the invention is to omit the rotating device for each article in a conveyor for a Shrink packaging machine, thereby simplifying the structure of the machine and increasing its lifespan. That's true.

(d) Means for Solving the Problems In order to solve the above problems, the present invention has an endless chain that is driven in a circular direction in a desired direction, and at least a portion of the bottom and the top have a circular cross section, and is made of a heat-shrinkable tube. In a conveyor for a Shrink packaging device, which conveys an article mounted with an article while rotating in an upright state, a plurality of mounting plates each having a flat surface on which the article is placed is attached to the chain, and the upper part of the chain is equipped with a plurality of mounting plates on which the article is placed. A receiving plate that contacts a part of the bottom surface of the article is provided along one side edge of the chain at the part where the article is to be rotated, and above the receiving plate, the article is placed in contact with a circular cross-section portion of the article. A guide member for guiding the chain is provided along both sides of the chain.

(e) Effect In the above configuration, the endless chain moves circularly. An article having a heat-shrinkable tube attached to its outer periphery is placed on the mounting plate of the endless chain and sent. When the article reaches the position of the receiving plate, a part of the article is conveyed on the receiving plate. This causes the article to rotate.

(F) Embodiments Examples of the present invention will be described below with reference to the drawings.

In Figures 1 to 3, a Shrink packaging device conveyor (hereinafter referred to as conveyor) 1 according to this embodiment is shown.
It is shown. This conveyor 1 has an endless chain 4 hooked on drive and idle sprockets 2 and 3, and a number of mounting plates 5 fixed to the endless chain.
It has The endless chain 4 is guided by a guide rail (not shown) on the lower side of the part for conveying articles, ie, bottles. A portion of the conveyor's outward travel is passed through a high temperature atmosphere 21, such as in a heating furnace 20 of known construction.

A receiving plate 6 is disposed along one side edge of the conveyor 1 in and near the heating furnace 20 . As shown in FIG. 3, this receiving plate 6 is thin and in contact with the placing plate 5, so that when the article placed on the placing plate 5 comes to that position, one side of the bottle b part rests on the receiving plate. The upstream edge 8 of the receiving plate 6 (as viewed in the direction of movement of the mounting plate) is inclined as shown in FIG. Moreover, the edge 8 and side edge 9 are thin like a knife so that the bottle can be easily placed on top.

At the top of the conveyor 1, a pair of guide members or guide rails 7 for guiding the bottles b are further provided corresponding to the receiving plate 6. The guide rail 7 is arranged apart from the mounting plate and guides the bottle by contacting the outer periphery of the upper part of the bottle, thereby preventing the bottle from falling off the mounting plate or overturning. If the article has a circular cross section at all positions, such as a bottle, the guide rail 7 may be placed at a position where it can prevent the bottle from tipping over, but if there is a non-circular section, the guide rail 7 may Avoid this and guide the circular cross section.

In addition, in FIG. 4, 20 is a heating furnace, 22 is a motor, 23 is a fan rotated by the motor,
Reference numeral 24 is a cartridge heater, and the cartridge heater 24 heats the air sent by the fan, and a large number of nozzle holes 26 are formed in the rear wall 25.
It is designed to heat the bottle by spraying it towards the side of bottle b through the bottle.

A case in which shrink packaging is performed using the conveyor having the above configuration will be described.

The endless chain 4 is transferred at a constant pitch in the direction of the arrow, and the bottle b is placed on the placing plate 5 by a known device at a position on the upstream side of the heating furnace.
When bottle b comes to position A, a heat shrink tube t of a predetermined length is attached to the outside of bottle b by a known tube attachment mechanism 10. After that, when the bottle is sent to the position of the receiving plate 6, the bottle b is prevented from moving in the lateral direction of the conveyor (direction perpendicular to the direction of travel) by the guide rail 7, so a part of the bottom rests on the receiving plate 6. .

If the mounting plate 5 moves intermittently in such a state,
Since only the bottom surface of the bottle on the mounting plate 5 attempts to move forward, a moment acts on the bottle, causing it to rotate. Therefore, the bottle b is heated in the heating furnace 2 while rotating.
The heat-shrinkable tube t moves intermittently within the heating furnace, and is heated by the hot air sent from the heating furnace and contracts.

(g) Effects In the conveyor of the present invention, a fixed receiving plate is simply provided along one side edge of the conveyor, and the article can be rotated by placing a part of the bottom of the article on the receiving plate. There is no need to provide a drive mechanism for rotating each article on the conveyor, so the structure is simplified, and costs can be reduced by preventing breakdowns and facilitating maintenance.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an embodiment of a conveyor for a Shrink packaging device according to the present invention, Fig. 2 is a plan view of the conveyor shown in Fig. 1 with the guide rails removed, and Fig. 3 is a cross-section of the conveyor. 4 are sectional views showing the inside of the heating furnace. 1... Conveyor, 4... Endless chain, 5...
Placement plate, 6...receiving plate, 7...guide rail.

Claims (1)

[Scope of utility model registration request] In a conveyor for a Shrink packaging device, which has an endless chain that is driven in a circular direction in a desired direction, has a bottom surface and at least a portion of the top portion having a circular cross section, and conveys an article equipped with a heat shrink tube while rotating in an upright state. , A plurality of mounting plates having a flat surface on which the article is placed are attached to the chain, and a receiving plate is attached to the top of the chain so that the part where the article is to be rotated is in contact with a part of the bottom surface of the article. A guide member is provided along one side edge of the chain, and above the receiving plate, a guide member is provided along both sides of the chain to contact a circular cross-sectional portion of the article and guide the article. Conveyor for Shrink packaging equipment.