KR101902383B1 - Apparatus and method for determining faulty of injection molding objects - Google Patents

Abstract

The present invention relates to an apparatus and a method for determining failure of an injection molded article. The apparatus comprises: a state detecting unit for detecting state information of each injection molding process performed during injection molding in an injection molding device; a state comparing unit for comparing state information of each injection molding process detected by the state detecting unit with reference state information stored in a reference state storing unit; and a failure determining unit for receiving the comparison result of the state information for each injection molding process through the state comparing unit and determining that the injection is a failure if at least one of the state information for each process does not satisfy the reference state information.

Description

[0001] APPARATUS AND METHOD FOR DETERMINING FAULTY OF INJECTION MOLDING OBJECTS [0002]

The present invention relates to an apparatus and method for determining the failure of an injection molded article, and more particularly, to an apparatus and method for determining a failure of an injection molded article, The present invention relates to a faulty discrimination apparatus and method.

Injection molding is generally carried out using a rigid or flexible vinyl chloride resin, polystyrene, polyethylene, acetylcellulose, methacrylic resin (polymethacrylic acid ester), polycarbonate Polycarbonate ester) or nylon is heated and melted in a cylinder, and this is injected into a cold mold through a nozzle with a plunger to produce a molded article.

The order of molding is 1) material supply 2) mold closing 3) plunger advancement, material injection 4) plunger retraction after dwell for a certain time 5) next material supply 6) , 2) to 7) are repeated for one cycle.

The above-described molding operation is performed automatically, and almost no human hands are required. The time of one cycle of injection molding is the sum of injection time, cooling time, and intermediate time. If the timer is interlocked for the first time, it continues a certain cycle.

The factors of the injection molding include molding temperature, molding pressure, molding cycle, mold temperature and the like, and their optimum values should be selected according to the material to be used.

On the other hand, various automobile injection molding (or injection molding) parts are included in the automobile, and if there is an error in the injection molding (or injection molding), it leads to defective parts and affects the safety of the automobile. Therefore, it is very important to control the injection molding (or injection molding) included in the automobile as a component.

Accordingly, conventionally, a method of determining the amount or defect of a product by measuring the weight of an injection molding product has been used. That is, an electronic scale is installed around an injection molding machine so that a person puts it on an electronic scale using a hand or a machine, The robot placed the product on the electronic scale, and the method was used to determine the quantity and defects of the product using the weight measured on the electronic scale.

However, such a conventional method is incapable of using in a narrow space, so that a large facility investment cost is incurred, a time is long in the inspection process, and the production speed is lowered and a cost related to inspection is generated.

The background art of the present invention is disclosed in Korean Patent Laid-open Publication No. 10-2016-0062377 (published on June 26, 2016, an apparatus for measuring a defect by the weight of an injection mold take-out robot).

According to an aspect of the present invention, there is provided an injection molding method, which is created to solve the above-described problems, and it is an object of the present invention to provide an injection molding method, The present invention also provides an apparatus and method for determining the failure of an injection molded article.

According to an aspect of the present invention, there is provided an apparatus for determining failure of an injection molded article, comprising: a state detector for detecting state information of each injection molding process performed during injection molding in an injection molding machine; A state comparing unit for comparing state information of each injection molding process detected by the state detecting unit with reference state information stored in a reference state storing unit; And a failure judging unit which receives the comparison result of the state information for each injection molding process through the state comparing unit and judges that it is a failure injection case when the state information for each process does not satisfy at least one reference state information .

In the present invention, the failure discrimination device for an injection molded product may further comprise a failure display part for performing a failure indication in a predefined manner for an injection molded article determined to be bad by the failure determination part.

In the present invention, the failure discrimination device for an injection molded product further comprises a collection selection part for storing the injection molded product determined to be defective by the failure determination part into a predefined improper injection molded product collection box in such a manner as to switch the injection molded product discharge path .

In the present invention, it is preferable that the apparatus further comprises an injection information output unit for outputting information on the injection molding material determined to be defective by the failure determination unit through visual output means or audible output means, The information output unit outputs the defect information every time a defect injection occurs, calculates and outputs statistics of occurrence of the defect injection, and calculates and outputs information on a process of relatively high defect injection occurrence .

According to another aspect of the present invention, there is provided a method for determining an abnormality of an injection molded article, comprising the steps of: detecting status information of each process performed during injection molding in an injection molding machine; Comparing the state information of each process detected by the state detector with the reference state information stored in the reference state storage unit; A failure judgment unit receiving the comparison result of the state comparison unit and checking whether the state information for each process satisfies at least one reference state information; Determining, as a result of the check, that the at least one process-specific reference state information is not satisfied; And a step of performing a failure indication on the injection molded object determined to be defective by the defective display unit or sorting the injection molded objects determined to be defective by the collection selection unit and loading the classified injection molded object into the specified defective injection molded body collecting box.

According to one aspect of the present invention, the present invention allows the user to judge whether a molded article is formed in accordance with whether the measured state of the molded article conforms to a preset reference condition.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing an outline configuration of an apparatus for determining failure of an injection molding according to a first embodiment of the present invention; FIG.
FIG. 2 is a view showing an outline configuration of an apparatus for determining failure of an injection molding according to a second embodiment of the present invention; FIG.
FIG. 3 is an exemplary view showing a schematic configuration of an apparatus for determining failure of an injection molded product according to a third embodiment of the present invention. FIG.
4 is an exemplary view showing a schematic configuration of an apparatus for determining failure of an injection molded product according to a fourth embodiment of the present invention.
5 is a flow chart for explaining a failure determination method of an injection object according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus and method for determining failure of an injection molding according to the present invention will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is an exemplary view showing a schematic configuration of an apparatus for determining failure of an injection molding according to a first embodiment of the present invention.

1, the apparatus for determining failure of an injection molded product according to the first embodiment of the present invention includes a state detecting unit 110, a reference state storing unit 120, a state comparing unit 130, a failure determining unit 140 ), And a reference state input unit 150.

The state detection unit 110 detects state information of each process (or step) performed during the injection molding in the injection molding machine 10.

The state detection unit 110 detects the state of the injection molding machine 10 by using at least one sensor (for example, a temperature sensor, a filling distance detection sensor, a pressure sensor, etc.) installed in the injection molding machine 10, (Or step-by-step) state information.

The reference state storage unit 120 stores in advance reference states (or reference state information) for each process (or step) for the injection molding (or injection molding) injection molding in the injection molding machine 10.

The reference state storage unit 120 includes information on a molding condition table for an injection molded product (or an injection molded product) to be injection molded in the injection molding machine 10.

For example, the reference state (or reference state information) may include at least one of molding temperature, molding pressure, molding cycle, cycle time, mold temperature, cooling temperature, filling time, and filling distance for each process . However, it should be noted that the reference state (or reference state information) described herein is information described in one example, and therefore, it is noted that the information on the molding condition table may be additionally included.

The reference state (or reference state information) may be input through the reference state input unit 150.

The reference state storage unit 120 stores a reference state (or reference state information) received through the reference state input unit 150 as a database.

The state comparator 130 compares the state information of each process (or step) detected by the state detector 110 with the reference state information (or reference state information) stored in the reference state storage unit 120.

The failure determination unit 140 receives the comparison result of the status information for each process (or step) through the status comparison unit 130, and the status information for each process (or step) Reference state information) is not satisfied, it is judged to be a poor injection molding.

FIG. 2 is a schematic view illustrating an apparatus for determining the failure of an injection molding according to a second embodiment of the present invention. Referring to FIG.

As shown in FIG. 2, the apparatus for determining the failure of an injection-molded product according to the second embodiment of the present invention is characterized in that, in the apparatus for determining failure of an injection molded product according to the first embodiment shown in FIG. 1, . Therefore, the description of the components 110 to 150 described with reference to FIG. 1 will be omitted.

The failure display unit 160 displays a failure indication for an injection object determined to be defective by the failure determination unit 140.

For example, when the injection molded article is determined to be defective, the defective display unit 160 may indicate that the defective molded article is defective in a predefined manner.

For example, the defective display unit 160 can attach a tag to the defective injection object or spray paint of a specific color.

By displaying a defect in the defective product through the defect display unit 160, the user can easily and quickly distinguish and manage the normal product and the defective product.

3 is an exemplary view showing a schematic configuration of an apparatus for determining failure of an injection molding according to a third embodiment of the present invention.

As shown in FIG. 3, in the rejection failure discrimination apparatus according to the third embodiment of the present invention, the rejection discrimination apparatus according to the second embodiment shown in FIG. . Therefore, the description of the components 110 to 160 described in FIGS. 1 and 2 will be omitted.

The collection selection unit 140 may load the injection molded article determined to be defective by the failure determination unit 140 in a collection box (not shown) of the designated defective injection molded article.

Although not shown in the drawings, the injection molding machine 10 includes a normal injection molding collection box (not shown) and a defective injection collection box (not shown) at the outlet of the injection molding machine 10, So that the ejected material can be discharged to the specified collection box.

For example, when it is determined that an injection object to be injected from the injection molding machine 10 is defective, the collection selection unit 170 discharges the defective injection object to a collection box (not shown) (Not shown) with respect to the injection molded article.

For example, even if the defective display unit 160 does not display any defective display on the defective display unit, it is possible to easily load only defective objects.

By collecting bad and normal injection products separately through the collection selection unit 170, the user can easily and quickly distinguish and manage the normal injection molding product and the defective injection molding product.

4 is an exemplary view showing a schematic configuration of an apparatus for determining the failure of an injection molded product according to a fourth embodiment of the present invention.

As shown in FIG. 4, the apparatus for determining the failure of an injection object according to the fourth embodiment of the present invention is characterized in that the injection object information output unit 180 ). Therefore, the description of the components 110 to 170 described with reference to FIGS. 1 to 3 will be omitted.

The injection object information output unit 180 outputs information on the injection molding material determined to be defective by the failure determination unit 140 to visual output means (e.g., a monitor, 7-segment LED lamp, etc.) Speakers, etc.).

The injection object information output unit 180 can output the defect information every time a defect injection object occurs and can calculate and output the statistics of occurrence of the defect injection object. In the process (or step) in which the defect injection object is relatively high, Can be calculated and output for each rank.

As described above, the at least one information relating to the faulty injection object is acquired through the injection object information output unit 180, thereby making it possible for the user to improve the process (or step) at which the fault is relatively high, have.

FIG. 5 is a flowchart for explaining a failure determination method of an injection object according to an embodiment of the present invention.

Referring to FIG. 5, the state detecting unit 110 of the failure discriminating apparatus according to the present embodiment detects state information of each process (or step) performed during injection molding in the injection molding machine 10 (S101 ).

The status comparison unit 130 of the defect discrimination apparatus according to the present embodiment may further include status information of each process (or step) detected by the status detection unit 110 and status information of the reference status stored in the reference status storage unit 120 Or reference state information) (S102).

The reference state storage unit 120 previously stores a reference state (or reference state information) for each process (or step) for the injection molding (or injection molding) injection molding in the injection molding machine 10.

In addition, the failure determination unit 140 of the failure discrimination apparatus according to the present embodiment receives the comparison result of the status information for each process (or step) through the status comparison unit 130, ) State information to at least one reference state (or reference state information) (S103).

If the reference state information (or the reference state information) is not satisfied by at least one of the process (or step) as a result of the check (S103) (NO in S103), the failure determination unit 140 determines Unsatisfactory molded article) is determined to be defective (S104).

In addition, it is also possible to perform a failure display on the injection molded object determined to be defective through the failure display part 160 of the failure determination device of the injection molding according to the present embodiment, or to display the collection selection part 170 of the failure determination device of the injection molded product according to the present embodiment (S105). In the case of the injection molding machine,

On the other hand, if it is determined in step S103 that the reference state (or reference state information) is satisfied for each injection molding process (or step) (YES in step S103), the failure determining unit 140 determines Is determined to be normal (S106).

In addition, the normally determined extrudate is sorted and loaded into a designated normal extruded product collection box (not shown) through the collection selection unit 170 of the failure discrimination apparatus according to the present embodiment (S107).

As described above, according to the present embodiment, it is possible to determine the correctness of an injection object immediately depending on whether the measured state in each process of molding the injection product meets predetermined reference conditions, Make sure to manage the injection objects easily and quickly.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, I will understand the point. Accordingly, the technical scope of the present invention should be defined by the following claims.

10: injection molding machine 110: state detector
120: reference state storage unit 130: state comparison unit
140: Bad determination unit 150: Reference status input unit
160: bad display part 170:
180: an injection material information output section

Claims (5)

A state detector for detecting state information of each injection molding process performed during injection molding in the injection molding machine;
A state comparing unit for comparing state information of each injection molding process detected by the state detecting unit with reference state information stored in a reference state storing unit; And
And a failure determination unit that receives the comparison result of the state information for each injection molding process through the state comparison unit and determines that the state information for each process does not satisfy at least one reference state information,
And a failure indicator for performing a failure indication in a predefined manner with respect to an injection object determined to be defective by the failure determination unit, wherein the failure indicator includes a tag attached to the defective injection object itself, Performs poor display by paint, and
And an injection object information output unit outputting information on the injection object determined to be defective by the failure determination unit through visual output means or audible output means,
The injection object information output unit outputs the defect information every time a defect injection occurs, calculates and outputs statistics of occurrence of the defect injection, and calculates and outputs information on the process of relatively high defect injection occurrence And a defective discrimination device for an injection molded article.
delete The apparatus according to claim 1,
Further comprising: a collection selection unit for storing the injection objects determined to be defective by the failure determination unit in a predefined improper injection molded article collection box in such a manner that the injection article discharge path is switched.
delete Detecting state information of each process performed during the injection molding in the injection molding machine;
Comparing the state information of each process detected by the state detector with the reference state information stored in the reference state storage unit;
A failure judgment unit receiving the comparison result of the state comparison unit and checking whether the state information for each process satisfies at least one reference state information;
Determining, as a result of the check, that the at least one process-specific reference state information is not satisfied; And
And a step of performing a failure indication on the injection molded object determined to be defective by the defective display unit or by classifying the injection molded object determined to be defective by the collection selection unit and loading the classified injection molded object into the specified defective injection molded body collecting box,
Wherein the failure display unit performs a failure display in a manner specified by the failure display unit in a manner specified by the failure determination unit, wherein the failure display unit displays a tag attached to the failure injection itself or a failure Display, and also
The injection object information outputting unit outputs information on the injection molded object determined to be defective by the failure determining unit through the visual outputting means or the auditory outputting means, the injection object information outputting means outputs the defect information every time a defective injection object occurs, Calculating and outputting the generated statistics, and calculating and outputting information on a process in which the defective projections are relatively high, in order of ranking.

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