JP2003285911A - Carrying device equipped with ultraviolet exposure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carrying device equipped with a ultraviolet exposure, causing no bending or overlap of carried objects due to vibration resulting in an extreme reduction in wear of components, causing no deposition of a worn metal powder on a work such as lamber resulting in the significantly less need for changing the worn components, and causing no snaking of a chain conveyor resulting in good hardening of a paint on the surface of the work. <P>SOLUTION: The carrying device comprises the ultraviolet exposure 11 on which a ultraviolet beam source is mounted and the chain conveyor 20 for travelling along the irradiation plane of the ultraviolet exposure. The chain conveyor has a net 23 for carrying the carried objects placed thereon and a hollow pipe 30 fitted and supported in an intermediate portion of the net at a given space in parallel to the carrying direction, and the hollow pipe has both ends provided with supporting portions 31 formed thinner than the intermediate portion. Rotating rollers 44 are fitted to the supporting portions at both ends of the hollow pipe and each rotating roller travels at the upper part of both-end rails. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a carrying device equipped with an ultraviolet irradiation device.

[0002]

2. Description of the Related Art Conventionally, for example, an ultraviolet curable paint is applied to the surface of wood, and the paint is cured by ultraviolet rays from an ultraviolet light source mounted on an ultraviolet irradiation device while the wood is conveyed by a chain conveyor. ing.

From the standpoint of mass production and cost, two rows or parallel sinks are used and the wood to be transported is large or small, but those used for stairs, chairs, desks, tables, etc. are large and 500 mm wide. Some 2000 mm thick and 3 mm thick, weighing about 25 kg per piece. Small ones
There is a lightweight object having a thickness of 200 mm and a thickness of about 3 mm.

As a conventional chain conveyor, for example, as shown in FIG. 4, a pair of rails 1 arranged at intervals, a net 2 made of stainless steel, and a predetermined interval on the net 2 are provided. A hollow pipe 3 fitted and supported;
Chains 4 provided at both ends of the net 2 and each hollow pipe 3
There is a structure in which a supporting plate 5 formed at the lower part along the traveling direction of the chain conveyor is provided.

[0005]

However, according to the conventional chain conveyor shown in FIG. 4, since the chain 4 travels while contacting the upper part of the rail 1, the chain 4 is worn and the upper part of the support plate 5 is netted. 2 runs with a heavy load placed on it, so that the support plate 5 and the net 2 wear due to contact.
The disadvantage is that worn parts must be replaced after a certain period of time.

Further, when the net 2 and the support plate 5 are worn, the metal powder generated by the wear is scattered and adheres to a work such as wood to be conveyed.

Furthermore, due to the vibration of the chain conveyor,
There is a drawback that the position of the work such as wood is displaced and the ultraviolet rays from the ultraviolet light source (not shown) provided in the ultraviolet irradiation device are not irradiated to a desired portion, so that curing failure of the coating material occurs.

Further, the hollow pipe 3 may be thermally expanded and deformed by the high heat generated from the ultraviolet light source.

The present invention has been made in view of the above points, and there is no bending or overlapping of conveyed objects due to vibration, wear of parts is extremely small, and metal powder due to wear does not adhere to a work such as wood. It is an object of the present invention to provide a transfer device equipped with an ultraviolet irradiation device that can significantly reduce the need for exchanging parts due to abrasion, and further can prevent the meandering of the chain conveyor and can well cure the paint on the surface of the work.

[0010]

The present invention has the following constitution in order to solve the above problems. The invention according to claim 1 comprises an ultraviolet irradiation device equipped with an ultraviolet light source, and a chain conveyor running along the irradiation surface of the ultraviolet irradiation device.

The chain conveyor comprises a net for placing and carrying an object to be carried, a hollow pipe which is fitted and supported in a hollow portion of the net at a predetermined interval in parallel with the carrying direction, and a rotary roller. is there.

Further, both ends of the hollow pipe have supporting portions formed to be thinner than an intermediate portion, and rotating rollers are fitted to the supporting portions at both ends, and the rotating rollers are rotated along the upper portions of rails at both ends. It is configured to run.

According to a second aspect of the present invention, in the carrying device equipped with the ultraviolet irradiation device according to the first aspect, the hollow pipe is formed with an appropriate number of air holes.

According to a third aspect of the present invention, in the carrying device equipped with the ultraviolet irradiation device according to the first and second aspects, the net is supported flatly by a hollow pipe which is fitted and supported at a predetermined interval. It is configured to be.

According to a fourth aspect of the present invention, in the conveying device equipped with the ultraviolet irradiation device according to any one of the first to third aspects, the chain is formed by arranging adjacent rotating rollers at a single pitch. is there.

According to the transfer device equipped with the above-mentioned ultraviolet irradiator, since the rotary rollers are fitted to the support portions at both ends of the hollow pipe, the chain guide is less worn, and the work such as wood is used for the net and the hollow pipe. Since it is supported by, the support plate is not required unlike the conventional device, it does not wear due to contact with the net, metal powder of the support plate does not adhere to the work, and parts are replaced due to wear. No need, moreover, there is no meandering of the chain conveyor,
The paint on the surface of the work can be cured well.

[0017]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to FIGS. FIG. 1 is a front view of a carrying device according to the present invention equipped with a known ultraviolet irradiation device body. In FIG. 1, 11 is a main body of an ultraviolet irradiation device provided in the irradiation part of a chain conveyor, 12 is an ultraviolet light source mounted inside the main body 11 of the ultraviolet irradiation device, for example, a mercury lamp for ultraviolet curing of 8 kW to 12 kW. (Metal halide lamp). The number of UV light sources varies depending on the application, but in the transport device equipped with the UV irradiation device shown in Fig. 1, 3 kW mercury curing UV lamps are used.
Lamp, and two 12 kW ultraviolet curing mercury lamps are used.

Reference numeral 20 is a chain conveyor, 21 is a base of the chain conveyor, and 22 is a pair of rails formed at regular intervals. Reference numeral 23 is a net for placing and transporting a transported object, which is made of, for example, a stainless material.

Reference numeral 30 denotes a hollow pipe which is fitted and supported in the hollow portion of the net 23 in parallel with the conveying direction at a predetermined interval and is made of, for example, a stainless material. Further, the hollow pipe 30 has a supporting portion 31 whose both ends are formed thinner than the middle portion. By forming the supporting portion 31 to be thin, the size of the chain traveling on the rail can be made relatively small. For example, when the thickness of both ends is 3.9φ, the thickness of the intermediate portion is 10.5φ. In addition, the hollow pipe has a hollow tube 63.
It is configured to be fitted at intervals of 5 mm. Also hollow pipe 3
0 is formed with an appropriate number of air holes 32. If the hollow pipe does not have the air holes 32, the high heat from the ultraviolet light source 12 may deform the hollow pipe 30. The temperature of the hollow pipe 30 is, for example, about 200 ° C., but the deformation can be prevented by providing the air holes 32. Further, the net is supported by the hollow pipe in a planar shape, and the work such as wood can be conveyed at a predetermined position of the chain conveyor 20.

In FIG. 2, reference numeral 41 is a cylinder into which the support portions 31 at both ends of the hollow pipe 30 are fitted, 42 is a bush provided on the outer peripheral portion of the cylinder 41, 43 is a connection between adjacent cylinders 41 and 41. It is a plate for doing. 44 is bush 4
(2) A rotating roller that rotates around the outer periphery and is configured to run while rotating along the upper portion of the rail. Further, the rotary roller is configured with a single pitch, and the mechanical strength can be increased by reducing the distance between the rollers. When the rotation roller 44 is provided, when the chain conveyor 20 travels, running friction of the chain conveyor can be suppressed and vertical movement and meandering of the chain conveyor can be prevented. A drive gear driven by a motor is provided at one end of the chain conveyor 20 so that the chain conveyor travels.

Next, the hardening operation of the UV-curable coating material such as wood using the above-mentioned conveying device equipped with the UV irradiation device will be described. Turn on the ultraviolet light source 12 of the ultraviolet irradiation device main body 11,
While traveling on the chain conveyor 20, a work such as wood whose surface is coated with an ultraviolet curable paint is placed and conveyed on the upper surface of the chain conveyor 20. The speed of the chain conveyor 20 at this time is 40 to 60 meters per minute, and the irradiation time by the ultraviolet light source is about 3.2 seconds to 4.8 seconds. When the work of curing one side of wood or the like is completed, the top and bottom are inverted and ultraviolet curing coating is carried out if necessary, and after that, the coating is cured by an ultraviolet light source as before. When the work of hardening the paint on the surface of the work is completed, it is piled up at a predetermined place from the chain conveyor and conveyed to the outside.

[0022]

According to the carrying device equipped with the ultraviolet irradiating device according to the above-mentioned claim 1, since the rotary rollers are fitted to the supporting portions at both ends of the hollow pipe, the chain is provided like the conventional carrying device. There is no special wear of the guide, the vibration of the chain conveyor can be reduced, and there is a special effect that the work such as wood can be favorably conveyed and the paint on the surface of the work can be favorably cured. Further, the rotating roller is hardly worn, and there is an effect that metal powder does not adhere to a work such as wood.

Further, it is not necessary to provide a support for supporting the net as in the conventional transfer device, and the work such as wood is supported by the net and the hollow pipe, so that the metal powder of the net and the support is on the surface of the work. It does not adhere and has the special effect of drastically reducing the need for maintenance.

Since the hollow pipe in the carrying device equipped with the ultraviolet irradiation device according to the above-mentioned claim 2 is formed with a proper number of air holes, it is a hollow pipe even when it receives high heat from the ultraviolet light source. There is an effect that it can be prevented from being thermally expanded and deformed.

Since the net in the carrying device equipped with the ultraviolet irradiating device according to the third aspect is supported flatly by the hollow pipe which is fitted and supported at a predetermined interval, the work such as wood is satisfactorily carried. There is an effect that can be.

Since the rotating rollers in the conveying device equipped with the ultraviolet irradiating device according to the above-mentioned claim 4 are arranged at a single pitch without providing a space, a special effect that the chain runs smoothly There is.

[Brief description of drawings]

FIG. 1 is a front view of a carrying device equipped with an ultraviolet irradiation device according to the present invention.

FIG. 2 is a partially enlarged plan view of the chain conveyor in FIG.

FIG. 3 is a partial plan view of the chain conveyor in FIG.

FIG. 4 is a partially enlarged plan view of a conventional chain conveyor.

[Explanation of symbols]

11 Ultraviolet irradiation device body 12 UV light source 20 chain conveyor 21 base 22 rails 23 Net 30 hollow pipes 31 branches 32 air holes 41 cylinder 42 bush 43 plates 44 rotating roller

Continued front page    F term (reference) 3F034 AA11 AB03 BA01 BB01                 4F035 AA03 CA02 CA04 CB03 CB13

Claims (4)

[Claims] 1. An ultraviolet irradiation device equipped with an ultraviolet light source, and a chain conveyor that travels along an irradiation surface of the ultraviolet irradiation device, the chain conveyor including a net for placing and conveying an object to be conveyed, The net is equipped with a hollow pipe that is inserted into and supported in the hollow part of the net at a predetermined interval in parallel with the conveying direction. Fit the rollers,
A conveyor device equipped with an ultraviolet irradiation device, characterized in that each rotating roller is configured to run along the upper portions of rails at both ends. 2. The conveying device equipped with the ultraviolet irradiating device according to claim 1, wherein the hollow pipe is formed with a proper number of air holes. 3. A transporting device equipped with an ultraviolet irradiating device according to claim 1, wherein the net is supported in a plane by a hollow pipe fitted and supported at a predetermined interval. 4. The conveyor device equipped with the ultraviolet irradiation device according to claim 1, wherein the chain conveyor is configured by arranging adjacent rotary rollers at a single pitch.