Hot air type PU drying device for edge cutting of electronic-grade glass fiber cloth

Abstract

The utility model relates to a hot air type PU (polyurethane) drying device for edge cutting of electronic-grade glass fiber cloth. The hot air type PU drying device comprises a PU coating wheel, a PU coating belt, a hot air drying device and a smoke absorption device, the PU coating belt is arranged between the PU coating wheels in a penetrating mode, the PU coating belt is arranged between the hot air drying devices in a penetrating mode, the PU coating belt comprises a PU transition belt, the PU transition belt is arranged between the PU coating wheels and the hot air drying devices, a smoke absorption device is arranged on the side, away from the PU transition belt, of each hot air drying device, and the PU coating belt is arranged in the smoke absorption device in a penetrating mode. The hot air drying device disclosed by the utility model is high and adjustable in drying temperature, and hot air has a permeation effect on PU (Polyurethane), so that the PU can be fully permeated and dried; the drying area of the hot air drying device is concentrated, so that the phenomenon that the edge of the gray cloth is yellowed is avoided; a flue gas absorption device is arranged, so that the cleanliness of a production environment is ensured; the PU baking path is shortened, the size of a machine table is reduced, and personnel operation is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic grade glass fiber cloth manufacturing field, especially in kind for electronic grade glass fiber cloth edge cutting hot -blast type PU drying device. BACKGROUND

[0002] Glass fiber cloth downstream CCL customer saves glue, usually will use the edge glass fiber cloth. The glass fiber cloth manufacturer carries out the glass cloth edge processing in the process, using the current baking equipment usually will exist PU penetration bad cutting cloth edge silk shedding, the cloth baking area big cloth edge partial area yellowing, this will certainly affect downstream customer product production quality, cause complaint, for this must carry out the reformation and upgrading to existing edge drying equipment, guarantee the cutting quality, reduce the complaint. The existing process is first in the glass fiber cloth edge cutting place coats a PU solution (8mm wide), then uses the Ir lamp tube to dry and solidify PU, the drying path has 10 meters long, finally uses the cutting knife to cut in the middle position of PU area, reaches the purpose of removing the feather edge and edge.

[0003] At present, due to the large baking area of Ir lamp tube, the heat is not concentrated, leading to the weak PU penetration and solidification capacity, after the edge cutting of the edge area, occasionally silk shedding phenomenon occurs, that is, the yarn is not solidified by PU and separated from the cloth surface, on the other hand, during the cloth cutting process, due to the large baking area of Ir lamp tube, the area outside the PU coating belt is also baked, causing the cloth edge area yellowing phenomenon. These phenomena will certainly affect the product quality, cause the customer and bring loss to the company. INVENTION CONTENTS

[0004] In view of the problem that the current Ir lamp tube has large baking area, the heat is not concentrated, leading to the weak PU penetration and solidification capacity, and the area outside the PU coating belt is also baked, causing the cloth edge area yellowing phenomenon, a hot air type PU drying device for electronic grade glass fiber cloth edge cutting is proposed.

[0005] The technical scheme of the utility model is: a hot air type PU drying device for electronic grade glass fiber cloth edge cutting includes PU coating wheel, PU coating belt, hot air drying device and flue gas absorption device, the PU coating belt is arranged between the PU coating wheels, the PU coating belt is arranged between the hot air drying devices, the PU coating belt includes PU transition belt, the PU transition belt is arranged between the PU coating wheels and the hot air drying devices, the flue gas absorption device is arranged on the side of the hot air drying device away from the PU transition belt, and the PU coating belt is arranged in the flue gas absorption device.

[0006] Preferably, the PU coating wheels are symmetrically arranged.

[0007] Preferably, the hot air drying devices are symmetrically arranged with adjustable spacing.

[0008] The hot air drying device for cutting edges of electronic-grade glass fiber cloth has the advantages that the drying temperature is high and adjustable, the hot air has a permeation effect on PU, so that the PU can be fully permeated and dried, the drying area of the hot air drying device is concentrated, so that the phenomenon of yellow color difference of the cut edges of the cloth is avoided, the smoke absorption device is provided, the cleanliness of the production environment is ensured, the health of the personnel is beneficial, the path of PU baking is shortened, the size of the machine table is reduced, and the personnel operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 The utility model is used for the hot air type PU drying device structure schematic diagram for cutting edges of electronic-grade glass fiber cloth.

[0010] In the drawing, the names of the components corresponding to the respective reference numerals are as follows:

[0011] 1, PU coating wheel; 2, PU coating belt; 21, PU transition belt; 3, hot air drying device; 4, smoke absorption device. DETAILED DESCRIPTION

[0012] The utility model will be described in detail in combination with the drawings and specific embodiments. The embodiments are implemented on the premise of the technical scheme of the utility model, and give detailed implementation modes and specific operation processes, but the protection scope of the utility model is not limited to the following embodiments.

[0013] REFERENCE Figure 1 As shown in the figure, the utility model provides a kind of hot air type PU drying device for cutting edges of electronic-grade glass fiber cloth, including PU coating wheel 1, PU coating belt 2, hot air drying device 3, smoke absorption device 4;PU coating wheel 1 is symmetrically arranged, PU coating belt 2 is arranged between PU coating wheel 1, PU is coated on the glass fiber cloth that needs to be cut edge of PU coating belt 2 by PU coating wheel 1, hot air drying device 3 is symmetrically arranged, PU coating belt 2 is arranged between hot air drying device 3, PU coating belt 2 includes PU transition belt 21, PU transition belt 21 is arranged between PU coating wheel 1 and hot air drying device 3, in this embodiment, PU transition belt 21 length is 1m, after the glass fiber cloth that needs to be cut edge is coated with PU by PU coating wheel 1, reaches hot air drying device after running 1m PU transition belt 21, the purpose of running 1m PU transition belt 21 is to make PU solution natural permeation absorption, then is baked by a pair of hot air drying device 3, so that PU is fully dried, the air force and temperature of a pair of hot air drying device 3 are consistent, in this embodiment, drying temperature is between 100 DEG C ~ 600 DEG C, outlet size 15cm * 1cm, avoid cloth surface to sway in drying process, while the temperature of hot air device can be adjusted according to actual drying effect, can guarantee that PU coating area is fully dried;In addition, the distance between two hot air guns can be adjusted according to actual production condition;

[0014] The hot air drying device 3 is provided with a flue gas absorption device 4 away from one side of the PU transition zone 21, and the PU coating zone 2 is arranged in the flue gas absorption device 4; in the factual example, the distance between the hot air drying device 3 and the flue gas absorption device 4 is 20 cm, the flue gas absorption device 4 recycles the flue gas generated by the PU drying, and ensures the cleanness of the production environment; after the PU coating zone 1 is dried, the cutting knife starts to rotate, the cloth surface is cut, the waste edge is pulled away through the waste edge air suction, and the good cloth surface continues to move and is finally wound on the paper tube.

[0015] The hot air drying device 3 has high and adjustable drying temperature, and the hot air has a penetration effect on the PU, so that the PU can be fully penetrated and dried; the hot air drying device 3 has a concentrated drying area, so that the phenomenon of yellow color difference of the cutting edge of the cloth is avoided; the flue gas absorption device 4 is provided, the cleanness of the production environment is ensured, and the personal health is beneficial; the PU baking path is shortened, the machine table volume is reduced, and the personnel operation is more convenient.

[0016] It should be noted that the above terms "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. The meaning of "a plurality of" is two or more. "Mounting", "connection" and "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected.

[0017] The above is only a preferred embodiment of the present application, and is not any form or substantial limitation of the present application. It should be noted that, for ordinary skilled persons in the art, without departing from the present application, a number of improvements and supplements can be made, which should also be considered as the protection range of the present application. Any equivalent changes, modifications and evolution made by those skilled in the art without departing from the spirit and scope of the present application, all equivalent embodiments of the present application; at the same time, any equivalent changes, modifications and evolution made according to the essential technology of the present application to the above-mentioned embodiments, all belong to the range of the technical scheme of the present application.

Claims

1. A hot air type PU drying device for trimming edges of electronic grade glass fiber cloth, characterized in that, It comprises PU coating wheels (1), PU coating belts (2), hot air drying devices (3), flue gas absorption devices (4); the PU coating belts (2) are arranged between the PU coating wheels (1), the PU coating belts (2) are arranged between the hot air drying devices (3), the PU coating belts (2) comprise PU transition belts (21), the PU transition belts (21) are arranged between the PU coating wheels (1) and the hot air drying devices (3), the hot air drying devices (3) are provided with the flue gas absorption devices (4) on the sides away from the PU transition belts (21), and the PU coating belts (2) are arranged in the flue gas absorption devices (4).

2. The hot air type PU drying device for trimming edges of electronic grade glass fiber cloth according to claim 1, characterized in that, The PU coating wheels (1) are symmetrically arranged.

3. The hot air type PU drying device for trimming edges of electronic grade glass fiber cloth according to claim 1, characterized in that, The hot air drying devices (3) are symmetrically arranged with adjustable spacing.

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