KR-20260063188-A - Mold measuring temperature system

KR20260063188AKR 20260063188 AKR20260063188 AKR 20260063188AKR-20260063188-A

Abstract

The present invention relates to a mold temperature measuring system for accurately measuring the temperature of a mold or an injection molded product, comprising: a camera change detection unit that receives a first image of the interior of a mold from a camera and sets a first feature point on the first image, receives a second image of the interior of a mold from the camera and sets a second feature point identical to the first feature point on the second image, and calculates the displacement of the second feature point from the first feature point; and a temperature measuring unit that measures the temperature of a measurement point on the second image, wherein the temperature is measured by moving the measurement point from the first feature point to the second feature point by a displacement amount.

Inventors

최규남
김경섭
김종돌
이승오
김경한

Assignees

주식회사 한국몰드

Dates

Publication Date: 20260507
Application Date: 20241030

Claims (5)

At least one camera for capturing an internal image of the mold after the product is molded and opened; and A camera change detection unit that receives a first image of the interior of a mold captured from the camera and sets a first feature point on the first image, receives a second image of the interior of the mold captured from the camera, sets a second feature point identical to the first feature point on the second image, and calculates the displacement of the second feature point from the first feature point; A temperature measuring unit that measures the temperature of a measurement point on the second image, wherein the temperature is measured by moving the measurement point from the first feature point to the second feature point by a displacement amount. A mold temperature measuring system including
In Article 1, The above camera change detection unit is a mold temperature measurement system that extracts the coordinates of the first feature point and the coordinates of the second feature point in an absolute coordinate system.
In Article 2, The above camera change detection unit is a mold temperature measurement system that calculates displacement from the coordinates of the second feature point to the coordinates of the first feature point.
In Article 1, The above-described camera change detection unit sets a protruding part, an edge of a cavity where an injection molded product is formed, a protruding part within a cavity, or a marker as a first feature point, in a mold temperature measurement system.
In Article 1, A mold temperature measuring system in which the first measurement point is located at a different position from the first feature point.

Description

Mold measuring temperature system The present invention relates to a mold temperature measuring system capable of accurately measuring the temperature of a mold. Conventionally, molding devices equipped with molds have been used for molding various articles. For example, in an injection molding machine, which is a type of molding device, a thermoplastic resin is heated to soften it, filled into a mold, and then cooled to form an article of a desired shape. As for the mold, a set of molds consisting of one or more molds is used. For example, a pair of molds consisting of a fixed mold and a movable mold is used. Hereinafter, the molding process performed by filling material into the mold in this manner is referred to as a molding cycle. In such molding devices, monitoring of the mold is required in most cases. For this reason, a mold monitoring device is used. The mold monitoring device comprises a camera that photographs the inside of the mold and a judgment unit that processes the images captured by the camera to determine whether the molding status is normal or abnormal. The camera is often installed at a position that photographs the inside of the movable mold. There are broadly two reasons for monitoring the mold using a camera. One reason is to monitor the molding status while the product is held in the mold after molding. This monitoring is called primary monitoring. In primary monitoring, the shape of the product on the mold is checked, and it is determined whether it has been molded correctly. If the product has defects or if it is determined that the shape is incorrect, it results in an abnormal outcome in the primary monitoring, and the mold monitoring device outputs a primary monitoring abnormality. In addition, the temperature of the mold can be checked using a camera to determine whether the mold is damaged or if the injection-molded product is defective. However, the camera faces a problem where the initial settings change due to vibrations during the injection molding process, which results in an inability to accurately measure the temperature. FIG. 1 is a conceptual diagram schematically illustrating a mold temperature measuring system according to one embodiment of the present invention. FIG. 2 is a schematic diagram illustrating a mold temperature measuring system according to one embodiment of the present invention. FIG. 3 is a flowchart schematically illustrating a mold temperature measuring system according to one embodiment of the present invention. Hereinafter, various embodiments of the present disclosure are described in conjunction with the accompanying drawings. As various embodiments of the present disclosure are subject to various modifications and may have various forms, specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the various embodiments of the present disclosure to specific forms, and all modifications and/or equivalents that fall within the spirit and scope of the various embodiments of the present disclosure It should be understood that it includes water or substitutes. In relation to the description of the drawings, similar reference numerals have been used for similar components. Expressions such as “comprising” or “may compose,” which may be used in various embodiments of the present disclosure, indicate the presence of the disclosed corresponding function, operation, or component, and do not limit one or more additional functions, operations, or components. Furthermore, in various embodiments of the present disclosure, terms such as “comprising” or “having” are intended to specify the presence of the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof. In various embodiments of the present disclosure, expressions such as “or” include any and all combinations of the words listed together. For example, “A or B” may include A, may include B, or may include both A and B. Expressions such as "first," "second," "first," or "second" used in various embodiments of the present disclosure may modify various components of the various embodiments, but do not limit such components. For example, such expressions do not limit the order and/or importance of such components. Such expressions may be used to distinguish one component from another. For example, the first user device and the second user device are both user devices and represent different user devices. For example, without departing from the scope of the various embodiments of the present disclosure, the first component may be named the second component, and similarly, the second component may be named the first component. When it is stated that a component is "connected" or "connected" to another component, it should be under