JPH0446863Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a container rotation device that reliably rotates a container in a coating device for containers such as bottles.

[Prior Art] Containers such as bottles are generally coated to improve their appearance before being filled with contents.

Conventionally, commonly used coating devices for containers such as bottles have a coating machine installed on one side of a row of containers conveyed by a conveyor for conveying containers such as bottles, parallel to the conveying direction of the conveyor. A holder consisting of a coating roller or the like having a shaft is provided, and a container is provided on the other side of the row of containers to ensure good rotational contact between the coating roller and the containers and to obtain good coating on the containers. The apparatus is equipped with a container rotation device that rotates the containers by means of a drive belt urged by a spring-loaded pressure roll so as to press the containers against the applicator roller with a constant pressure. The drive belt of the container rotating device in this coating device is generally V
belt is used.

[Problems to be solved by the invention] The conventional container rotating device described above has the following problems.

(1) In addition to general V-belts, round belts and flat belts are used as drive belts, and if containers such as bottles become wet due to condensation, water, or other liquids, the containers will slip. It sticks and is difficult to rotate, making it impossible to coat uniformly.

(2) Since the frictional force between the bottle or other container and the drive belt is weak, the rotational force applied to the bottle or other container is weak, making it impossible to create a high-speed coating device.

(3) If the drive belt gets wet or stretches due to the relationship between the drive belt and the foil, slippage may occur between the drive and passive wheels and the drive belt, and between the drive belt and containers such as bottles. Uniform coating cannot be achieved, and the tension of the drive belt must be adjusted frequently.

The present invention has been developed in view of the above problems, and when coating containers such as bottles, it provides good rotation to the containers even if the containers are wet with condensation, water, or other liquids. It is an object of the present invention to provide a container rotating device which can perform uniform and high-speed coating and hardly requires adjustment of the tension of a drive belt.

[Means for Solving the Problem] The present invention to achieve the above object has a conveyor for carrying and conveying containers, and an endless drive belt that is supported and moved by a drive pulley and a passive pulley at both ends. In a container rotating device in which the drive belt contacts the container on its outer circumferential surface and rotates the container, inner teeth and outer teeth are protruded at equal intervals on the inner and outer surfaces of the drive belt, respectively, and the drive pulley and teeth that can be engaged with the internal teeth protruding from the drive belt are formed on the outer periphery of the driven pulley.

[Function] As in the conventional case, a row of containers such as bottles carried on a conveyor is brought into contact with a drive belt on one side, and due to the difference between the conveyance speed of the conveyor and the moving speed of the drive belt, The container is rotated. Here, in the present invention, since external teeth are formed on the outer surface of the drive belt, the frictional force between the drive belt and the container is large, and even if the container is wet, it can be rotated reliably. Since the teeth of the driven pulley and the internal teeth of the drive belt engage with each other, slippage between them is less likely to occur, so there is almost no need to adjust the tension of the drive belt.

[Example] Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a top view of an embodiment of the container rotating device of the present invention, and FIG. 2 is a view taken along the - arrow in FIG.

As shown in FIGS. 1 and 2, the container rotating device 1 of this embodiment has an endless drive belt 2, and the drive belt 2 has a drive wheel 3 as a drive pulley and a drive pulley as a passive pulley at both ends. It is supported by the passive foil 4 and moves in the direction of arrow A. Each of the foils 3 and 4 is supported by a mounting base 6, and a belt tension adjustment device 7 is attached to one end of the mounting base 6. A plurality of spring-equipped pressing rolls 5 are disposed in the container rotating device 1, and press the drive belt 2 from the inside downward in the first drawing, that is, toward the container 12 side to be described later. A plurality of coating rollers 13 are rotatably disposed on one side of the drive belt 2 and spaced therefrom, generally having axes in the same direction as the direction of movement of the coating rollers. Between the outer surface of the drive belt 2 and the coating roller 13, the bottom of the belt is connected to the conveyor 1.
A plurality of containers 12 held and moved by 1 are rotated and coated.

FIG. 3 is a partially enlarged view of FIG. 1, and as shown in FIG. 3, a plurality of external teeth 2a are formed on the outer surface of the drive belt 2 so as to protrude at equal intervals. Internal teeth 2b similar to the external teeth 2a are also formed on the inner surface of the drive belt 2. Moreover, teeth 3a that engage with the inner teeth 2b are formed on the outer periphery of the drive wheel 3, and the driven foil 4 (first
Similar teeth (not shown) are also formed on the surface (see figure).

The container 12 is moved by the conveyor 11 while being sandwiched between the drive belt 2 on which external teeth 2a and internal teeth 2b are formed and the coating roller 13, but as in the conventional case, the conveyor 11 moves while holding the container 12 at the bottom. 11 moving speed Vc and drive belt 2
The container 12 such as a bottle is rotated on the conveyance path of the conveyor 11 due to the speed difference between the moving speed Vv and the moving speed Vv.

In this embodiment, a special double-sided toothed belt is used as the drive belt 2, and both the drive wheel 3 and the driven wheel 4 are toothed wheels, so that the drive belt 2 does not slip and runs reliably. Further, a container 12 such as a bottle is supported on one side by a coating roller 13 etc., and the other side is crimped by a driving belt 2 with teeth on both sides which is pressed toward the container 12 by a pressing roller 5 with a spring. The container 12 is reliably rotated without slipping due to the speed difference between the drive belt 2 and the conveyor 11.

The width of the teeth 2a and 2b of the drive belt 2 with teeth on both sides (dimension in the height direction of the container), the height of the teeth 2a and 2b,
An appropriate pitcher or the like can be determined and manufactured depending on the diameter, height, number of containers to be processed, etc. of the container 12 such as a bottle to be transported or rotated.

The container rotating device of the present invention can be applied not only to coating devices but also to inspection devices.

[Effects of the invention] As explained above, the present invention has the following effects.

A double-sided toothed belt is used for the drive belt that rotates the containers moving on the conveyor, and both the drive wheel and the passive foil of this drive belt are formed with teeth that can engage with the drive belt. The frictional force between the container and the container is increased, ensuring that the container is rotated even if the container, such as a bottle, becomes wet with condensation, water or other liquids, allowing uniform coating and high speed coating. Further, since the drive belt and the drive wheel are securely engaged, slippage of the drive belt does not occur and there is almost no need to adjust the tension of the belt.

[Brief explanation of the drawing]

FIG. 1 is a top view of an embodiment of the container rotating device of the present invention, FIG. 2 is a view taken along the - arrow in FIG. 1, and FIG. 3 is a partially enlarged view of FIG. 1. 1... Container rotation device, 2... Drive belt, 2a
...External teeth, 2b...Internal teeth, 3...Drive wheel, 3
a... Teeth, 4... Passive foil, 5... Press roll with spring, 6... Mounting stand, 7... Belt tension adjustment device, 11... Conveyor, 12... Container, 1
3... Coating roller, Vc... Traveling speed of drive belt, Vv... Moving speed of conveyor.

Claims (1)

[Claims for Utility Model Registration] A conveyor 11 that carries and carries containers 12;
A driving pulley 3 and a passive pulley 4 at both ends
A container rotating device 1 having an endless drive belt 2 supported and moved by the drive belt 2, the drive belt 2 contacts the container 12 on its outer peripheral surface to rotate the container 12, the inner and outer surfaces of the drive belt 2 Inner teeth 2b and outer teeth 2a are protruded at equal intervals, respectively, and teeth 3a that can be engaged with the inner teeth 2b protruding from the drive belt 2 are provided on the outer peripheries of the drive pulley 3 and the driven pulley 4. A container rotating device 1 characterized in that each of these is formed.