Polaroid polyester film defect spot detection device

Abstract

The utility model relates to a polyester film defect spot detection device for a polaroid. The polyester film defect spot detection device comprises a projection assembly, a film sample assembly and a developing assembly, the projection assembly comprises a projection support and a projector, the projector is placed on the projection support, the projector is provided with a light source with the angle adjusted within the range of 30-150 degrees, the developing assembly comprises a curtain wall, the curtain wall is arranged opposite to the light source of the projector, the curtain wall is provided with a developing face with the pure and uniform color, and the developing face is provided with a light source with the angle adjusted within the range of 30-150 degrees. The developing surface is over against a light source of the projector; the film sample assembly comprises a film sample frame arranged between a light source of the projector and the curtain wall, and a clamping plate used for clamping a polyester film sample is installed on the film sample frame. The detection device consists of the projection assembly, the film sample assembly and the developing assembly, and is relatively low in cost, simple and reliable in structure, easy to operate and clear in detection phenomenon.

Description

TECHNICAL FIELD

[0001] The utility model relates to the polyester film field, especially a kind of polyester film flaw detection device for polaroid. BACKGROUND

[0002] Biaxially oriented polyester (BOPET) film is made of polyethylene terephthalate as raw material, and is made into a thick sheet by extrusion method, and is stretched in longitudinal direction and transverse direction respectively to form a film material. In the production process of BOPET film, the melt defect produces flaw points, and the slight deformation of the film surface is easily produced in the film process operation to become a flaw point, resulting in defects in the downstream process.

[0003] However, the current main detection is carried out by manual visual inspection or strong light flashlight, which has low precision and is easy to cause missed detection, and cannot meet the quality requirements of polyester film for polaroid. INVENTION CONTENTS

[0004] The technical problem to be solved by the utility model is to provide a polaroid polyester film flaw detection device which is simple in structure, easy to operate, intuitive and reliable.

[0005] To solve the above technical problems, the technical scheme of the utility model is as follows: a polaroid polyester film flaw detection device, which is characterized by comprising a projection assembly, a film sample assembly and a developing assembly.

[0006] The projection assembly comprises a projection support and a projector, the projector is placed on the projection support, and the projector has a light source with an angle in the range of 30-150 °.

[0007] The developing assembly comprises a curtain wall, the curtain wall is arranged opposite to the light source of the projector, and the curtain wall has a developing surface with pure and uniform color, and the developing surface faces the light source of the projector.

[0008] The film sample assembly comprises a film sample holder arranged between the light source of the projector and the curtain wall, and the film sample holder is provided with clamping plates for clamping polyester film samples.

[0009] Further, the clamping plates are four in total and are distributed in a rectangular shape on the film sample holder.

[0010] The detection device of the utility model is composed of the projection assembly, the film sample assembly and the developing assembly, has relatively low cost, simple and reliable structure, is easy to operate, and the detection phenomenon is clear.

[0011] The four clamping plates distributed in a rectangular shape are matched to clamp the polyester film samples, and the stability of the clamped polyester film samples is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the schematic view of the polyester film flaw detection device for polarizing plate. DETAILED DESCRIPTION

[0013] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows in combination with the drawings and preferred embodiments.

[0014] As Figure 1 The polyester film flaw detection device for polarizing plate shown in the drawing comprises a projection assembly, a film sample assembly and a developing assembly which are sequentially distributed.

[0015] The projection assembly comprises a projection support and a projector, the projection support comprises a vertical column 1 and a support platform 2 installed on the upper end face of the vertical column 1, the support platform 2 and the vertical column 1 are connected to form a T-shaped projection support, the projector 3 is placed on the support platform 2 of the projection support, and the projector 3 has a light source with an angle in the range of 30-150°.

[0016] The developing assembly comprises a curtain wall 5, the curtain wall 5 is arranged opposite to the light source of the projector 3, and the curtain wall 5 has a developing surface with pure and uniform color, and the developing surface faces the light source of the projector 3.

[0017] The film sample assembly comprises a film sample holder arranged between the light source of the projector 3 and the curtain wall 5, and the film sample holder is provided with clamping plates for clamping polyester film samples 4.

[0018] The four clamping plates are distributed in a rectangular shape on the film sample holder. The four clamping plates distributed in a rectangular shape are used to clamp the polyester film samples, so that the stability of the clamped polyester film samples is ensured.

[0019] When the detection device is used to detect the polyester film, first, the polyester film sample 4 to be detected is placed on the film sample holder through the cooperation of the four clamping plates, and the surface of the polyester film sample 4 is ensured to be flat, then the projector 3 is turned on, and the light source of the projector 3 is uniformly irradiated on the surface of the polyester film sample 4, when the projection light transmits through the polyester film sample 4, the dark spots of the internal flaws or slight deformation (such as sub-millimeter level) of the film surface are clearly displayed on the developing surface of the curtain wall 5.

[0020] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make minor changes or modifications to the disclosed technical content, or make equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, equivalent change or modification of the above embodiments, which does not depart from the technical solution of the present application, is still within the scope of the technical solution of the present application.

Claims

1. A device for detecting defects in polyester film for polarizing films, characterized in that: The projection assembly, the film sample assembly and the developing assembly are included. The projection assembly includes a projection support and a projector, the projector is placed on the projection support, and the projector has a light source with an angle in the range of 30-150°. The developing assembly includes a curtain wall, the curtain wall is arranged opposite to the light source of the projector, and the curtain wall has a developing surface with pure and uniform color, which is opposite to the light source of the projector. The film sample assembly includes a film sample holder arranged between the light source of the projector and the curtain wall, and the film sample holder is provided with clamping plates for clamping the polyester film samples.

2. The polarizing sheet polyester film defect inspection apparatus according to claim 1, characterized by: The clamping plates are four in total and are distributed in a rectangular shape on the film sample holder.

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