JP3041996U - Radiation thermometer for resin sheet molding equipment - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To prevent oil and dust of resin smoke from adhering to the objective lens and to protect the objective lens by freely installing and removing a protective filter in front of the objective lens of the radiation thermometer. Quickly and easily check and clean the dirt on the filter. SOLUTION: A slide plate on which a protective filter facing a measurement hole at the top of a heater box is detachably attached is provided in front of an objective lens of a radiation thermometer so as to slide freely along a guide. did.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a radiation thermometer device used for measuring the surface temperature of a resin sheet in a heater bank of a resin sheet molding device.

[0002]

[Prior art]

 A radiation thermometer device of a conventional resin sheet molding apparatus is provided with an air purge pipe c at the top of a heater box a having a measurement hole b for measuring the surface temperature of a resin sheet s as shown in FIG. A radiation thermometer e is attached to the upper surface with the objective lens f downward, and an air purge pipe is installed to prevent oil and dust of resin smoke generated from the heated resin sheet s from adhering to the lens f. The structure is such that compressed air with a minute pressure is blown into c.

[0003]

[Problems to be solved by the device]

 In the radiation thermometer device described above, some measures were taken to prevent resin smoke, dust, etc. convection in the air purge pipe from adhering to the objective lens, but no sufficient effect was obtained. It is necessary to clean the surface of the objective lens from time to time, because if the objective lens is contaminated with oil from resin smoke, it will result in measurement failure and molding failure. However, the work of removing the radiation thermometers one by one and cleaning the objective lens is troublesome and cumbersome, and there is a disadvantage that the operation of the molding apparatus must be stopped during the cleaning.

An object of the present invention is to prevent the oil and dust of resin smoke from adhering to the objective lens and to protect the objective lens of the radiation thermometer by freely installing and removing a protective filter in front of the objective lens. An object of the present invention is to provide a radiation thermometer device capable of quickly and easily inspecting and cleaning the filter for dirt.

[0005]

Means for Solving the Problems In order to achieve the above object, a radiation thermometer device of a resin sheet molding apparatus of the present invention is characterized in that the resin sheet is attached to a top part of a heater box to which a heater element for heating the resin sheet is attached. In the radiation thermometer device of the resin sheet molding apparatus equipped with the radiation thermometer that selectively detects the radiation spectrum distribution on the surface of the resin and generates a temperature signal that fluctuates momentarily, in front of the objective lens of the radiation thermometer. It is characterized in that a slide plate, on which a protection filter facing the measurement hole of the top is detachably attached, is freely slidable along a guide at a position.

[0006]

[Actions and effects of the invention]

 The slide filter is pulled out to inspect whether the protective filter is soiled with oil or dust of resin smoke. If the protective filter is dirty, remove it and clean it, or replace it with another one. If the slide plate has multiple protection filters, move the slide plate to replace it with an unused one, clean the dirty protection filter, and then attach it to the slide plate again. To do.

According to the radiation thermometer device of this resin sheet molding device, it is possible to prevent oil and dust of resin smoke from adhering to the objective lens, and to quickly inspect and clean the protective filter. It can be done easily. In addition, it is possible to prevent molding defects due to dirt on the objective lens in conventional equipment, and to operate the molding equipment without stopping the operation while cleaning dirt on the protective filter. It also has the secondary benefit of reducing costs and product costs.

[0008]

[Embodiment of the invention]

 An embodiment of the present invention will be described below with reference to the drawings. 1 is a schematic view of a heater bank, FIG. 2 is a cross-sectional view of a main part of a radiation thermometer device, FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2, FIG. 4 is a plan view of a slide plate, and FIG. It is a sectional view of the important section showing an example of an embodiment.

FIG. 1 shows a heater bank H of the resin sheet molding apparatus. In the heater bank H, heater boxes 2 and 2 to which heater elements 3 for heating a resin sheet s that is gripped and conveyed by the clamp member 1 are attached are provided so as to correspond to the upper and lower positions of the sheet s. The radiation thermometer device 10 is provided on the top portion 2a of the heater box 2 on the upper side thereof.

As shown in FIG. 2, a measurement hole 4 for measuring the surface temperature of the resin sheet s is provided in the top portion 2 a of the heater box 2, and a pair of guides 11, 11 with the measurement hole 4 as the center. Place in parallel and attach. Each guide 11, 11 is provided with a lock member 12, 12 in which a ball 15 which is biased by a compression spring 14 into and out of a screw cylinder 13 is mounted so that the balls 15, 15 face each other in the horizontal direction. Place each. Reference numeral 16 is a heat insulating material provided between each guide 11 and the top portion 2a. Reference numeral 17 denotes a slide plate which is freely slidable along the inner side surfaces of the guides 11, 11 and is a circular shape which faces the measurement hole 4 in a large diameter portion 18a of a stepped hole 18 formed near the front thereof. A glass protection filter 20 is provided so that it can be attached and removed freely. Further, the slide plate 17 is provided so as to be locked and held at the measurement position by pressing the ball 15 of the lock member 12 into the concave portion 17a formed on the outer side surface of the slide plate 17. Reference numeral 19 is a knob provided at the rear end of the slide plate 17.

A plate-shaped reflector 21 is mounted on the guides 11 and 11 and then a known air purge tube 22 is fixed. A radiation thermometer 25, which selectively senses the radiation spectrum distribution on the surface of the resin sheet s and generates a temperature signal that fluctuates momentarily, is attached to the upper surface of the air purge pipe 22 with the objective lens 26 facing downward.

FIG. 5 shows another embodiment of the radiation thermometer device 10, which is constructed such that three protection filters 20 are mounted on the slide plate 117. Except for the slide plate 117, there is no difference from the above-described embodiment, so the same parts are denoted by the same reference numerals and the description thereof is omitted.

According to the radiation thermometer device 10 having such a configuration, when the protective filter 20 is contaminated by oil or dust of resin smoke, the slide plate 17 is pulled out and then the filter 20 is removed. Clean it or replace it with another one. When the slide plate 117 is provided with a plurality of protection filters 20 as shown in FIG. 5, the slide plate 117 is moved to be replaced with an unused one, and the dirty protection filter 20 is cleaned. After that, the slide plate 117 is mounted again.

The radiation thermometer device of this resin sheet molding apparatus prevents the oil content and dust of resin smoke from adhering to the objective lens by the protective filter, and also enables the inspection and cleaning work of dirt on the protective filter. It is quick and easy and convenient.

[Brief description of the drawings]

1] Schematic diagram of heater bank

FIG. 2 is a sectional view of a main part of a radiation thermometer device.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a plan view of a slide plate.

FIG. 5 is a cross-sectional view of a main portion showing another embodiment example.

FIG. 6 is a sectional view of a main part of a conventional radiation thermometer device.

[Explanation of symbols]

H → heater bank s → resin sheet 2 → heater box 2a → top 4 → measurement hole 10 →
Radiation thermometer device 11 → Guide 17 → Slide plate 20 → Protection filter 25 → Radiation thermometer 26 → Objective lens

Claims (1)

[Utility model registration claims] 1. A radiation thermometer that selectively senses a radiation spectrum distribution on the surface of the resin sheet and generates a temperature signal that fluctuates every moment in the top of a heater box having a heater element for heating the resin sheet. In a radiation thermometer device of a resin sheet molding apparatus equipped with, a slide plate on which a protective filter facing the measurement hole of the top is detachably mounted in front of the objective lens of the radiation thermometer along a guide. A radiation thermometer device for a resin sheet molding device, which is configured to be freely slidable.