JP6502906B2 - Injection molding system - Google Patents

Description

  The present invention relates to an injection molding system, and more particularly to an injection molding system in which a molding assisting member such as an insert or an insert member is inserted into a mold for injection molding.

In an injection molding machine, a method is known in which a molding assisting member such as an insert or an insert member is inserted into a mold to carry out injection molding.
Patent Document 1 discloses an injection molding machine in which a core is inserted into a mold of an injection molding machine to perform molding, and moldings of different shapes are molded by changing the internal shape of the core to be inserted. Technology is disclosed.
Patent Document 2 discloses a technique of inserting an insert member into a mold and then performing molding before injection of an injection molding machine to form a molded product integrated with the insert member.

Unexamined-Japanese-Patent No. 6-39883 Unexamined-Japanese-Patent No. 9-201849

In the technique disclosed in Patent Document 1, when the molding conditions are different for each insert inserted into the mold, the different molding conditions are individually managed as separate molding condition files.
However, when molding is carried out with frequent replacement of the core, molding may be performed with the molding condition different from that of the core inserted in the mold being incorrectly set, causing defective products. There was a risk of

  In the technique disclosed in Patent Document 2, it is possible to provide a plurality of types of insert members and obtain a plurality of insert molded articles for each insert member. However, molding conditions different for each insert molding are separately managed as separate injection molding files, and if the wrong insert member is inserted into the mold, there is a risk that mold failure or molding failure may occur. there were.

  Therefore, an object of the present invention is to provide an injection molding system capable of preventing erroneous molding under molding conditions that do not match molding assisting members such as inserts and insert members.

In the invention according to claim 1 of the present application, there is provided a molding assisting member waiting portion for letting the plurality of molding assisting members stand by outside the mold, and at least one of the plurality of molding assistants is inserted into the mold. In an injection molding system for forming a plurality of images, memory means for photographing the formation assisting member, characteristics of the formation assisting member, and forming conditions at the time of forming by inserting the formation assisting member into the mold are stored. Forming auxiliary member data storage means, forming auxiliary member specifying means for specifying a forming auxiliary member to be inserted into the mold, and conveying the forming auxiliary member from the forming auxiliary member waiting portion to a predetermined position in the mold And a weighing operation start means for performing a weighing operation after setting the molding conditions when the molding conditions are newly read out and set from the molding auxiliary member data storage means; The means identifies the molding assisting member photographed by the photographing means based on the feature of the molding assistant member photographed by the photographing means and the molding assistant member data stored in the molding auxiliary member data storage means, and wherein conveying the auxiliary molding member transporting means in the mold, then, the by metering operation starting means, it is possible to perform the injection step in an amount of injection of exactly molding conditions of the transported auxiliary molding member weighing An injection molding system is provided that features automatic initiation and completion of operations.

In the invention according to claim 1, since it becomes possible to specify the forming auxiliary member photographed by the photographing means based on the forming auxiliary member data stored in advance in the forming auxiliary member data storage means, it is inserted into the mold It is possible to specify the formed auxiliary member, and to reduce the possibility of an error occurring when setting the forming conditions and the like thereafter.
In addition, since forming conditions corresponding to the forming auxiliary member are also stored in the forming auxiliary member data storage means, when forming the forming auxiliary member is specified, forming may be performed using the stored forming conditions. It becomes possible. Furthermore, it is possible to reduce the number of unnecessary steps at the start of molding.

In the invention according to claim 2 of the present application, the injection molding system according to claim 1 is provided, wherein the molding assisting member is a core in which a cavity is formed.
In the invention according to claim 3 of the present application, the injection molding system according to claim 1 is provided, wherein the molding assisting member is an insert member for molding an insert molded article.

In the invention according to claim 4 of the present application, the feature of the auxiliary molding member is analyzed by photographing the auxiliary molding member by the photographing means, based on the image data of the auxiliary molding member photographed, and the features of the auxiliary molding member The injection molding system according to any one of claims 1 to 3 , which is stored in the molding auxiliary member data storage means as
In the invention according to the fourth aspect, the characteristic etc. of the auxiliary molding member is stored in advance in the auxiliary molding member data storage means as the characteristic of the auxiliary molding member based on the image data of the auxiliary molding member by the photographing means. There is no need to prepare included data, and it is possible to create data using a photographing means.

In the invention according to claim 5 of the present application, when the forming support member in the mold is replaced and inserted, the forming support member in the mold is specified by the forming support member specifying means, and the forming support is provided. The injection molding system according to claim 1 , wherein the molding conditions corresponding to the specified molding auxiliary member are read out and set from the member data storage means.

In the invention according to claim 6 of the present application, pre-Symbol auxiliary molding member specifying means, instead of the auxiliary molding member photographed by the photographing means, the information of the auxiliary molding member molding auxiliary member remaining in the standby section The injection molding system according to any one of claims 1 to 5 , wherein the molding support member inserted into the mold is specified based on the above.

The invention according to claim 7 of the present application includes molding condition setting means for setting molding conditions as the setting molding conditions, and when the setting molding conditions are set by the molding condition setting means, specifying by the molding auxiliary member specifying means If the molding condition of the molding auxiliary member data corresponding to the molding assistant member in the mold does not match the setting molding condition, insert the molding assistant member corresponding to the setting molding condition into the mold. An injection molding system according to claim 1 is provided.

In the invention of claim 8 of the present application, then molding condition corresponding to the molding auxiliary member to be inserted, according to claim 1 or 5, characterized in that a warning is different from the molding conditions currently set An injection molding system is provided.

In the invention according to claim 9 of the present application, the injection molding system according to any one of claims 1 to 8 is provided, wherein the means for inserting the molding auxiliary member into the mold is a robot. .

In the invention according to claim 10 of the present application, the injection according to any one of claims 1 to 9 , characterized in that the photographing means is attached to the means for inserting the molding assisting member into the mold. A molding system is provided.

  According to the present invention, it is possible to provide an injection molding system capable of preventing erroneous molding under molding conditions that do not match molding support members such as inserts and insert members.

It is a schematic diagram for demonstrating the injection molding system of the 1st Embodiment of this invention. The figure which expanded the metal mold | die in 1st Embodiment is shown. The modification which changed the mounting position of the camera in 1st Embodiment is shown. It is a schematic diagram for demonstrating the injection molding system of the 2nd Embodiment of this invention. The modification which changed the mounting position of the camera in 2nd Embodiment is shown.

First Embodiment
FIG. 1 is a schematic view for explaining an injection molding system according to a first embodiment of the present invention.
A plurality of types of inserts 40 having a cavity formed in the insert standby portion 42 are prepared and inserted into insert insertion holes formed in the mold 30 of the injection molding machine. The insertion into the mold 30 is performed using the articulated robot 10 having a grip at its tip. The shape of the cavity prepared for each of the plurality of inserts is changed, and the shape of the molded article to be formed is changed by changing the type of insert 40 inserted into the mold 30. It becomes possible.

Also, the camera 20 is provided to capture the insert 40. In the present embodiment, the camera 20 is fixed, and photographs the insert 40 placed in the insert standby unit 42.
A control device 50 of the injection molding machine is connected to the mold 30, and drive control and the like of the mold are controlled by the control device 50 of the injection molding machine. The articulated robot 10 is connected to a controller 52 of the articulated robot for controlling the operation of the articulated robot 10, and is also connected to the controller 50 of the injection molding machine and the controller 52 of the articulated robot There is.

Further, the insert specifying means 54, the insert analysis result storage means 56, and the insert analyzing means 58 are connected to the control device 50 of the injection molding machine, and the insert analysis means 58 is connected to the camera 20. .
FIG. 2 shows an enlarged view of the mold 30 in the present embodiment. A mold insertion hole 32 is provided in the mold 30, and it is possible for the multi-joint robot 10 to insert and mount any of the molds 40 in the interior of the insertion hole 32.

FIG. 3 shows a modification in which the mounting position of the camera 20 is changed. The configuration not shown in FIG. 3 has the same configuration as the example shown in FIG. In the example shown in FIG. 1, the camera 20 is fixedly installed, but in the present modification, it is shown in FIG. 1 that the camera 20 is fixed to the tip of the articulated robot 10. It is different from the example.
Thus, the camera 20 is used to specify the insert 40, but if the insert 40 can be specified, the camera 20 may be fixedly provided as in the example shown in FIG. 3 may be movably provided by being attached to the articulated robot 10 as in the example shown in FIG. Since the camera 20 is used to determine the features of the insert 40, the camera 20 is capable of image analysis such as the shape of the cavity and the length of the groove provided in the insert 40, the positions of the holes and pins, and markings. It is preferable to have a resolution.

  The camera 20 is used to capture the insert 40. In the example shown in FIG. 1, the insert 40 placed in the insert standby unit 42 is photographed. In the example shown in FIG. 3, since the camera 20 is mounted on the articulated robot 10, it can be moved, and it is possible to photograph the insert 40 even when it is placed in the insert standby unit 42, The articulated robot 10 can be moved, and after the insert 40 is mounted in the mold 30, the insert 40 can be photographed.

  The insert analysis means 58 analyzes the feature of the insert 40 based on the image data of the insert 40 taken by the camera 20 and the extracted data extracted from the image data. As a method of analysis, the entire image of the cavity of the insert 40 may be taken as a feature to correspond to each insert 40. As another method, the image taken by the camera 20 is binarized with light and shade, the area of the white part or black part of the groove provided in the cavity of the insert 40 is calculated and made to correspond to each insert 40. You may do so. Furthermore, the length of the boundary of the black and white portion in the imaging area of the camera 20 set in advance, the position and the number of circles, may be made to correspond to each insert 40. In addition, characters, symbols or barcodes imprinted on the outer periphery of the insert 40, and a shape formed to specify the insert 40 may be made to correspond to each insert 40.

  The analysis data of each nest 40 analyzed by the nest analysis means 58 is stored in the nest analysis result storage means 56 in correspondence with each nest 40. At this time, in addition to the analysis data of the insert 40, the forming conditions at the time of inserting each insert 40 into the mold 30 and performing molding are stored corresponding to the analysis data of each insert 40. You can also If the molding conditions are stored together, it is possible to output the molding conditions corresponding to the inserted insert 40 when it is determined that the insert 40 has been inserted.

  In the present embodiment, the characteristics of the insert 40 are analyzed based on the image data of the insert 40 taken by the camera 20 and the extracted data extracted from the image data, and the analysis data is corresponded to each insert 40 Although the analysis data is stored in the insertion analysis result storage means 56, it is not necessary to store analysis data in the insertion analysis result storage means 56 based on the image data taken by the camera 20, and it is necessary to It is also possible to make the created data for each insert 40 correspond to each insert 40 and store it in the insert analysis result storage means 56.

The insert specifying unit 54 specifies the captured insert 40 by comparing the analysis data stored in the insert analysis result storage unit 56 and the data supplied from the outside with the image data captured by the camera 20. It becomes possible.
In the present embodiment, the articulated robot 10 is used as the insert insertion means. As described above, when the multi-joint robot 10 is used to carry out the insertion and removal of the insert 40, the insertion and removal operation of the insert 40 can be performed in a free posture. It will be possible to do.

  In the insert standby unit 42, as shown in FIG. 1, the inserts 40 are arranged side by side. In specifying the nest in the nest identification means 54, as described above, the analysis data stored in the nest analysis result storage means 56 and the data given from the outside are compared with the image data photographed by the camera 20. May be used to specify the photographed insert 40, but instead, the standby position of the insert 40 in the insert standby unit 42 corresponds to the analysis data of each insert 40 as the standby position information. By storing the insert 40 in the insert analysis result storage means 56 and photographing the insert 40 left in the insert standby unit 42 with the camera 20, it is possible that the insert 40 at a specific position is not placed. It is also possible to analyze and identify which insert 40 is inserted into the mold 30.

  Further, the injection molding machine may be provided with molding condition setting means capable of setting molding conditions. The molding condition setting means may be a data input device or data storage means provided in the injection molding machine, or may be an input setting means provided outside the injection molding machine. Here, after the insert 40 is inserted into the mold 30, when the forming condition is set by the forming condition setting means, the forming condition corresponding to the type of the insert specified by the insert specifying means 54, and the forming When the molding conditions set by the condition setting means are different, the insert 40 corresponding to the molding condition set by the molding condition setting means is selected and replaced with the insert 40 inserted in the mold 30. It can also be inserted.

Second Embodiment
FIG. 4 is a schematic view for explaining an injection molding system according to a second embodiment of the present invention.
A plurality of types of insert members 60 are prepared in the insert member storage portion 62 for molding a molded article integral with the injected resin, and the insert member 60 is inserted into the mold 30 of the injection molding machine. The insertion into the mold 30 is performed using the articulated robot 10 having a grip at its tip. A plurality of types of insert members 60 prepared are different in shape for each insert member 60, and by changing the type of insert member 60 to be inserted into the mold 30, it is possible to form different insert-molded articles It becomes.

Also, the camera 20 is provided to capture the insert 40. In the present embodiment, the camera 20 is fixed, and images the insert member 60 placed in the insert member storage unit 62.
A control device 50 of the injection molding machine is connected to the mold 30, and drive control and the like of the mold are controlled by the control device 50 of the injection molding machine. The articulated robot 10 is connected to a controller 52 of the articulated robot for controlling the operation of the articulated robot 10, and is also connected to the controller 50 of the injection molding machine and the controller 52 of the articulated robot There is.
Furthermore, the insert member identification means 64, the insert member analysis result storage means 66, and the insert member analysis means 68 are connected to the control device 50 of the injection molding machine, and the insert member analysis means 68 is connected to the camera 20. .

FIG. 5 shows a modification in which the mounting position of the camera 20 is changed. The configuration not shown in FIG. 3 has the same configuration as the example shown in FIG. In the example shown in FIG. 4, the camera 20 is fixedly installed, but in the present modification, it is shown in FIG. 4 that the camera 20 is fixed to the tip of the articulated robot 10. It is different from the example.
Thus, the camera 20 is used to specify the insert member 60. However, if the insert member 60 can be specified, it may be fixedly provided as in the example shown in FIG. As illustrated in FIG. 5, the robot may be movably provided by being attached to the articulated robot 10. Since the camera 20 is used to determine the features of the insert member 60, it is preferable that the camera 20 have a resolution that allows image analysis of features such as the shape and color of the insert member 60.

  The camera 20 is used to capture the insert member 60. In the example shown in FIG. 4, the insert member 60 placed in the insert member storage section 62 is photographed. In the example shown in FIG. 5, since the camera 20 is mounted on the articulated robot 10, it is movable, and it is possible to photograph the insert member 60 even in a state of being placed in the insert member storage unit 62, The articulated robot 10 can be moved to take pictures of the insert member 60 after mounting the insert member 60 in the mold 30.

  The insert member analysis means 68 analyzes the characteristics of the insert member 60 based on the image data of the insert member 60 photographed by the camera 20 and the extraction data extracted from the image data. As a method of analysis, the entire image of the insert member 60 may be taken as a feature to correspond to each insert member 60. As another method, the image captured by the camera 20 may be binarized with gradation to calculate the area of the white portion or the black portion of the insert member 60 and correspond to each insert member 60. Furthermore, analysis may be performed within the imaging region of the camera 20 set in advance to correspond to each insert member 60.

  The analysis data of each insert member 60 analyzed by the insert member analysis means 68 is stored in the insert member analysis result storage means 66 in correspondence with each insert member 60. At this time, in addition to the analysis data of the insert members 60, the molding conditions at the time of inserting each insert member 60 into the mold 30 and performing molding are stored corresponding to the analysis data for each insert member 60. Let If the molding conditions are stored together, it is possible to output the molding conditions corresponding to the inserted insert member 60 when it is determined that the insert member 60 is inserted.

  In the present embodiment, the characteristics of the insert member 60 are analyzed based on the image data of the insert member 60 taken by the camera 20 and the extracted data extracted from the image data, and the analysis data is corresponded to each insert member 60 It is not necessary to store analysis data in the insert member analysis result storage means 66 based on the image data taken by the camera 20, although it is stored in the insert member analysis result storage means 66. The created data for each insert member 60 can be made to correspond to each insert member 60 and stored in the insert member analysis result storage means 66.

The insert member specifying means 64 specifies the photographed insert member 60 by comparing the analysis data stored in the insert member analysis result storage means 66 and the data given from the outside with the image data photographed by the camera 20. It becomes possible.
In the present embodiment, the articulated robot 10 is used as the insert member insertion means. As described above, when the multi-joint robot 10 is used to carry out the insertion and removal of the insert member 60, the insertion and removal operation of the insert member 60 can be performed in a free posture, so that even the complex shaped insert member 60 can be easily taken out and out. It will be possible to do.

  In the insert member storage section 62, as shown in FIG. 4, the insert members 60 are arranged side by side. Here, the standby position of the insert member 60 in the insert member storage unit 62 may be stored in the insert member analysis result storage means 66 as standby position information in correspondence with analysis data and the like of each insert member 60. In this way, when the molding condition is set, the insert member 60 corresponding to the set molding condition can be easily inserted into the mold 30.

  In these embodiments, when the insert 40 or the insert member 60 is newly inserted into the mold 30 and the forming condition is read out from the insert analysis result storage means 56 or the insert member analysis result storage means 66 and set. It is also possible to start the weighing process after setting the molding conditions. Although the amount of injection may differ depending on the molding condition, in such a configuration, since the measurement operation is performed after setting the condition, it is possible to perform the injection process with the amount of injection that meets the molding condition. This is particularly effective when changing a molded article without changing the resin.

  When the insert 40 or insert 60 is newly inserted into the mold 30 and the molding condition is set, if it differs from the molding condition of the insert or insert currently set, an alarm etc. A warning may be output. As described above, when the setting is made such that the alarm is issued and the molding is stopped, the operator confirms the modification of the insert 40 and the insert member 60, the modification of the mold 30, or the modification of the molding condition again to perform molding It is possible to resume.

Reference Signs List 10 articulated robot 20 camera 30 mold 32 insert insertion hole 40 insert 42 insert standby unit 50 control device for injection molding machine 52 control device for articulated robot 60 insert member 62 insert member storage unit

Claims (10)

An injection molding system including a molding assisting member waiting portion for holding a plurality of molding assistants waiting outside the mold, and inserting at least one of the plurality of molding assistants into the mold for molding,
An imaging unit for imaging the molding assisting member;
Molding auxiliary member data storage means for storing characteristics of the molding auxiliary member and molding conditions when the molding auxiliary member is inserted into the mold and molded;
Forming auxiliary member specifying means for specifying a forming auxiliary member to be inserted into the mold;
Conveying means for conveying the forming assisting member from the forming assisting member standby portion to a predetermined position in the mold;
Metering operation start means for performing measurement operation after setting the molding conditions when the molding conditions are newly read out and set from the molding auxiliary member data storage means;
Equipped with
The forming auxiliary member specifying means
Identifying the molding assistance member photographed by the photographing means based on the feature of the molding assistance member photographed by the photographing means and the molding assistance member data stored in the molding auxiliary member data storage means;
The conveying means conveys the shaping aid into the mold;
Thereafter, wherein said by the metering operation starting means starts and completes <br/> be automatically weighing operation it is possible to perform the injection step in an amount of injection of exactly molding conditions of the transported auxiliary molding member Injection molding system.   The injection molding system according to claim 1, wherein the molding assisting member is a core having a cavity formed therein.   The injection molding system according to claim 1, wherein the molding assisting member is an insert member for molding an insert molded article.   The image of the molding assisting member is photographed by the photographing means, and the characteristics of the molding assistant member are analyzed based on the photographed image data of the molding assistant member and stored in the molding assistant member data storage means as the characteristics of the molding assistant member. The injection molding system according to any one of claims 1 to 3, wherein:   When the forming auxiliary member in the mold is replaced and inserted, the forming auxiliary member in the mold is specified by the forming auxiliary member specifying means, and the forming specified from the forming auxiliary member data storage means The injection molding system according to claim 1, wherein the molding conditions corresponding to the auxiliary member are read out and set. The forming auxiliary member specifying means is
In place of the molding assisting member photographed by the photographing means, the molding assistant member inserted into the mold is specified based on the information of the molding assistant member remaining in the molding assistant waiting portion. The injection molding system according to any one of claims 1 to 5, characterized in that: A molding condition setting unit configured to set the molding condition as the setting molding condition;
When setting molding conditions are set by the molding condition setting means,
When the molding conditions of the molding assistant member data corresponding to the molding assistant member in the mold specified by the molding assistant member specifying means do not match the setting molding conditions, the molding assistant member corresponding to the setting molding conditions The injection molding system according to claim 1, wherein the injection molding is inserted into the mold.   The injection molding system according to claim 1 or 5, wherein a warning is given when the molding condition corresponding to the molding auxiliary member to be inserted next is different from the molding condition currently set.   The injection molding system according to any one of claims 1 to 8, wherein the transfer means is a robot.   The injection molding system according to any one of claims 1 to 9, wherein the photographing means is attached to the means for inserting the molding assisting member into the mold.

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