CN106671369B - Injection molding machine control system and method - Google Patents

Injection molding machine control system and method Download PDF

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Publication number
CN106671369B
CN106671369B CN201611012559.1A CN201611012559A CN106671369B CN 106671369 B CN106671369 B CN 106671369B CN 201611012559 A CN201611012559 A CN 201611012559A CN 106671369 B CN106671369 B CN 106671369B
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China
Prior art keywords
injection molding
molding machine
thimble
control
sensing information
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CN201611012559.1A
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Chinese (zh)
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CN106671369A (en
Inventor
黄旭伟
陈寒锐
陈仲调
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Weida Plastic & Machinery Industry Co ltd
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Weida Plastic & Machinery Industry Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/4005—Ejector constructions; Ejector operating mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/32—Moulds having several axially spaced mould cavities, i.e. for making several separated articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/7626—Measuring, controlling or regulating the ejection or removal of moulded articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/7626—Measuring, controlling or regulating the ejection or removal of moulded articles
    • B29C2045/7633—Take out or gripping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76177—Location of measurement
    • B29C2945/7624—Ejection unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76648—Sequence, e.g. the order in which operations are conducted

Abstract

The invention provides a control system and a method for an injection molding machine, wherein the system comprises: the sensing unit comprises a plurality of sensors which are respectively arranged on each part of the injection molding machine and are used for respectively acquiring sensing information of each part; and the control unit is used for respectively controlling each thimble of the injection molding machine to move forwards and backwards in each working cycle according to a preset control time sequence, a judgment threshold value and each sensing information so as to complete the working cycle. Wherein, the injection molding machine comprises at least two ejector pins. The injection molding machine control system and the injection molding machine control method provided by the invention have the advantages that the plurality of sensors are arranged on the injection molding machine comprising at least two ejector pins to acquire the sensing information of each part, and the ejector pins are respectively controlled to move forwards and backwards according to the preset control time sequence, the judgment threshold and the sensing information, so that at least two groups of ejector pins are controlled to conveniently carry out injection molding on products needing ejector pin mold supporting.

Description

Injection molding machine control system and method
Technical Field
The application relates to the technical field of injection molding machines, in particular to a system and a method for controlling an injection molding machine.
Background
The stack mold has great significance on the efficiency of injection molding products, can greatly improve the yield and the profit, saves energy and reduces the cost. However, the conventional stack mold is only suitable for injection molding of products which can be supported by pneumatic means, such as snack boxes, disposable cups, etc., and for injection molding of products which can be supported by ejector pins, such as disposable spoons, toy bricks, mobile phone shells, etc., the conventional injection molding machine control system and method are not satisfactory because the conventional injection molding machine control system and method are only limited to control one set of ejector pins.
Disclosure of Invention
In view of the above-mentioned deficiencies or inadequacies of the prior art, it would be desirable to provide an injection molding machine control system and method that controls at least two sets of ejector pins for injection molding an article requiring ejector pin mold support.
In a first aspect, the present invention provides an injection molding machine control system, the system comprising:
the sensing unit comprises a plurality of sensors which are respectively arranged on each part of the injection molding machine and are used for respectively acquiring sensing information of each part;
the control unit is used for respectively controlling each thimble of the injection molding machine to move forwards and backwards in each working cycle according to a preset control time sequence, a judgment threshold value and each sensing information so as to complete the working cycle;
wherein, the injection molding machine comprises at least two ejector pins.
In a second aspect, the present invention provides a method of controlling an injection molding machine, the method comprising, in each duty cycle:
respectively collecting sensing information of each part of the injection molding machine;
respectively controlling each thimble of the injection molding machine to move forwards and backwards according to a preset control time sequence, a judgment threshold value and each sensing information so as to complete the working cycle;
wherein, the injection molding machine comprises at least two ejector pins.
The injection molding machine control system and the injection molding machine control method provided by the embodiments of the invention realize that at least two groups of thimbles are controlled so as to carry out injection molding on a product needing thimble supporting according to the control time sequence, the judgment threshold value and the sensing information which are preset so as to respectively control the thimble to move forward and backward by arranging the plurality of sensors on the injection molding machine comprising at least two thimbles;
the injection molding machine control system and method provided by some embodiments of the invention further realize automatic switching of the control method corresponding to the mold by detecting and identifying the mold type to select the controlled ejector pin, the corresponding control time sequence and the judgment threshold.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of an injection molding machine control system according to an embodiment of the present invention.
Fig. 2 is a flowchart of a control method of an injection molding machine according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a double-thimble structure of an injection molding machine according to an embodiment of the present invention.
FIG. 4 is a schematic block diagram of a preferred embodiment of the system of FIG. 1.
FIG. 5 is a flow chart of a preferred embodiment of the method shown in FIG. 2.
Fig. 6 is a schematic process diagram of a work cycle in a preferred embodiment of the present invention.
Fig. 7 is a schematic process diagram of a work cycle in another preferred embodiment of the present invention.
FIG. 8 is a flow chart of a preferred embodiment of the method shown in FIG. 2.
FIG. 9 is a schematic diagram of a preferred embodiment of the system of FIG. 1.
FIG. 10 is a flow chart of a preferred embodiment of the method of FIG. 2.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
FIG. 1 is a schematic structural diagram of an injection molding machine control system according to an embodiment of the present invention.
As shown in fig. 1, in the present embodiment, an injection molding machine control system 10 provided by the present invention includes a sensing unit 11 and a control unit 12.
The sensing unit 11 comprises a plurality of sensors respectively arranged on each part of the injection molding machine 20 and is used for respectively acquiring sensing information of each part;
the control unit 12 is configured to control each ejector pin of the injection molding machine 20 to advance and retract respectively in each working cycle according to a preset control timing, a judgment threshold, and the sensing information, so as to complete the working cycle.
Wherein the injection molding machine 20 includes at least two ejector pins.
Specifically, in the present embodiment, the injection molding machine 20, the sensing units 11 and the control units 12 correspond to one another, and the control units 12 are integrated in the injection molding machine 20, that is, the injection molding machine control system 10 is integrated in the injection molding machine 20; in further embodiments, the control unit 12 may be separately provided and correspond to a plurality of sets of the sensing unit 11 and the injection molding machine 20, respectively, to control one or more injection molding machines 20.
Fig. 2 is a flowchart of a control method of an injection molding machine according to an embodiment of the present invention. The control method shown in fig. 2 can be correspondingly applied to the system shown in fig. 1.
As shown in fig. 2, in this embodiment, the method for controlling an injection molding machine according to the present invention includes, in each cycle:
s50: respectively collecting sensing information of each part of the injection molding machine;
s70: and respectively controlling each thimble of the injection molding machine to move forwards and backwards according to a preset control time sequence, a judgment threshold value and each sensing information so as to complete the working cycle.
Wherein, the injection molding machine comprises at least two ejector pins. The working cycle can be set to be fully automatic or semi-automatic according to actual requirements.
Fig. 3 is a schematic diagram of a double-thimble structure of an injection molding machine according to an embodiment of the present invention. As shown in fig. 3, in one embodiment, the dual ejector pin structure in the injection molding machine 20 includes a first ejector pin structure and a second ejector pin structure respectively disposed on the movable platen 207 and the front platen 208, and a first sensor 111 and a second sensor 112 disposed in each of the ejector pin structures. The first thimble structure and the second thimble structure respectively comprise a thimble driving mechanism 201, an ejector plate 202, a main thimble rod 203 and an auxiliary thimble rod 204, wherein the thimble driving mechanism 201 directly drives the main thimble rod 203 and drives the auxiliary thimble rod 204 through the ejector plate 202.
In the present embodiment, the sensing unit 11 specifically includes a first sensor 111 and a second sensor 112 shown in the figure, and a third sensor and a fourth sensor not shown in the figure. The first sensor 111 is used for detecting the real-time position of the thimble structure, and the second sensor 112 is used for detecting whether the thimble structure reaches a preset position; the third sensor and the fourth sensor are used to detect the real-time positions of the corresponding primary and secondary ejector pins 203 and 204, respectively.
The control unit 12 specifically includes a task processing device and a driving mechanism device for each thimble structure. The task processing device is used for receiving the sensing information sent by each sensor, generating each control instruction by combining a preset control time sequence and a judgment threshold value, and sending the control instruction to the driving mechanism device of each thimble structure for execution so as to respectively control the forward movement and the backward movement of the first thimble structure and the second thimble structure.
In the above embodiments, the dual-thimble structure and the corresponding sensor shown in fig. 3 are adopted, and in further embodiments, the system shown in fig. 1 and the method shown in fig. 2 can also be applied to dual-thimble structures or multi-thimble structures with different structures, and have the same technical effect.
In the embodiment, the plurality of sensors are arranged on the injection molding machine comprising at least two ejector pins to acquire the sensing information of each part, and the ejector pins are respectively controlled to move forwards and backwards according to the preset control time sequence, the judgment threshold and the sensing information, so that at least two groups of ejector pins are controlled to conveniently perform injection molding on a product needing ejector pin mold supporting.
FIG. 4 is a schematic block diagram of a preferred embodiment of the system of FIG. 1.
As shown in fig. 4, in a preferred embodiment, the injection molding machine control system 10 further includes a detection unit 13. The detection unit 13 is used to detect the type of mold set in the injection molding machine 20. The control unit 12 is further configured to select a controlled thimble, and a corresponding control timing and a judgment threshold according to the detection result.
FIG. 5 is a flow chart of a preferred embodiment of the method shown in FIG. 2. The method shown in fig. 5 can be correspondingly applied to the system shown in fig. 3.
As shown in FIG. 5, in a preferred embodiment, before entering the working cycle of steps S50-S70, the following steps are included:
s10: detecting the type of a mold arranged in the injection molding machine;
s20: and selecting the controlled thimble, the corresponding control time sequence and the judgment threshold according to the detection result.
Specifically, for different types of molds, different numbers of ejector pins need to be used, or different control timings and judgment thresholds need to be used for each ejector pin, for example, for some molds, each ejector pin needs to be controlled to advance after mold opening is completed, and for other molds, each ejector pin needs to be controlled to advance while mold opening is performed.
The embodiment further realizes automatic switching of the control method corresponding to the mold by detecting and identifying the mold type to select the controlled thimble and the corresponding control time sequence and judgment threshold.
Fig. 6 is a schematic process diagram of a work cycle in a preferred embodiment of the present invention. Fig. 7 is a schematic process diagram of a work cycle in another preferred embodiment of the present invention.
As shown in fig. 6 and 7, in some preferred embodiments, the work cycle further includes the control unit 12 controlling the injection molding machine 20 to perform mold closing, injection of the injection mold base, pressure maintaining, cooling, material storing, injection mold base retreating, mold opening, and air blowing according to the control timing, the determination threshold, and the respective sensing information.
FIG. 8 is a flow chart of a preferred embodiment of the method shown in FIG. 2. The method shown in fig. 8 can be correspondingly applied to the system of the above preferred embodiment.
As shown in fig. 8, in a preferred embodiment, step S50 is followed by:
s60: and controlling the injection molding machine to carry out mold closing, injection, pressure maintaining, cooling, material storage, injection pedestal retreating, mold opening and air blowing according to the control time sequence, the judgment threshold and the sensing information.
In the present embodiment, the work cycle further includes the steps of mold closing, injection table advancing, injection, pressure maintaining, cooling, material storing, injection table retreating, mold opening, and air blowing performed by the injection molding machine 20 under the control of the control unit 12.
In a preferred embodiment, the next work cycle is automatically entered after the previous work cycle is finished. That is, the control unit 12 controls the injection molding machine 20 to perform the cycle injection in a fully automatic control mode.
FIG. 9 is a schematic diagram of a preferred embodiment of the system of FIG. 1.
As shown in fig. 9, in a preferred embodiment, the injection molding machine control system 10 further includes a setup unit 14. The setting unit 14 is used for receiving an input setting instruction; the control unit 12 is further configured to enter a next working cycle according to the setting instruction, modify the control timing and/or the determination threshold.
FIG. 10 is a flow chart of a preferred embodiment of the method of FIG. 2. The method shown in fig. 10 can be correspondingly applied to the system shown in fig. 9.
As shown in FIG. 10, in a preferred embodiment, before entering the working cycle of steps S50-S70, at least one of the following steps is included:
s30: receiving an input setting instruction, and entering a next working cycle according to the setting instruction;
s40: and receiving an input setting instruction, and modifying the control time sequence and/or the judgment threshold according to the setting instruction.
Specifically, in the present embodiment, the setting unit 14 is a setting panel provided on the casing of the control unit 12; in further embodiments, the setting unit 14 may also be configured as a touch screen according to actual requirements, or different devices such as a communication device that receives a setting instruction sent by a device such as a mobile control terminal through a network.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units or modules described in the embodiments of the present application may be implemented by software or hardware. The units or modules described may also be provided in a processor, for example, the control unit 12 may be a software program provided in a computer or a mobile intelligent device, and connected with the sensing unit 11 and the injection molding machine 20 in a wired or wireless manner; or may be a hardware device for performing injection control independently. The names of these units or modules do not in some cases form a limitation on the units or modules themselves, and for example, the sensing unit 11 may also be described as "a collecting unit for collecting real-time information of each component of the injection molding machine".
As another aspect, the present application also provides a computer-readable storage medium, which may be the computer-readable storage medium included in the apparatus in the above-described embodiments; or it may be a separate computer readable storage medium not incorporated into the device. The computer readable storage medium stores one or more programs for use by one or more processors in performing the formula input methods described herein.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (4)

1. An injection molding machine control method, characterized in that the method is applied to an injection molding machine control system, the system comprising: the method comprises the following steps that in each working cycle:
the sensing units respectively acquire sensing information of all parts of the injection molding machine;
the detection unit detects the type of a mold arranged in the injection molding machine, the injection molding machine comprises at least two groups of thimble structures, each thimble structure comprises a thimble driving mechanism, a thimble plate, a main thimble rod and an auxiliary thimble rod, and the thimble plate is used for driving the auxiliary thimble rod;
the control unit selects the controlled thimble structure, the corresponding control time sequence and the judgment threshold according to the detection result;
and the control unit respectively controls each thimble structure of the injection molding machine to move forwards and backwards according to a preset control time sequence, a judgment threshold value and each sensing information so as to complete the working cycle.
2. The method of claim 1, further comprising, after separately collecting the sensor information of each part of the injection molding machine:
and the control unit controls the injection molding machine to carry out mold closing, injection pedestal advancing, injection, pressure maintaining, cooling, material storage, injection pedestal retreating, mold opening and air blowing according to the control time sequence, the judgment threshold and the sensing information.
3. A control method of an injection molding machine according to any one of claims 1-2, characterized in that the next work cycle is automatically entered after the end of the previous work cycle.
4. An injection molding machine control method according to any one of claims 1-2, further comprising at least one of the following before entering the work cycle:
the setting unit receives an input setting instruction and enters the next working cycle according to the setting instruction;
the setting unit receives an input setting instruction, and modifies the control time sequence and/or the judgment threshold according to the setting instruction.
CN201611012559.1A 2016-11-17 2016-11-17 Injection molding machine control system and method Active CN106671369B (en)

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Publication number Priority date Publication date Assignee Title
CN108357069B (en) * 2018-01-24 2020-06-23 华讯方舟科技有限公司 Melt flow balance test method for multi-cavity injection mold
CN113524598B (en) * 2021-09-16 2022-01-11 广东伊之密高速包装系统有限公司 In-mold labeling method and in-mold labeling injection molding system

Citations (4)

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CN201941123U (en) * 2010-07-19 2011-08-24 佛山市顺德区汉达精密电子科技有限公司 Signal connecting device for external equipment of injection molding machine
CN203680767U (en) * 2013-12-11 2014-07-02 东华大学 Mould monitor
CN204149426U (en) * 2014-09-27 2015-02-11 韶关亿利达机械有限公司 A kind of servo-electric injection machine
CN205343650U (en) * 2016-01-01 2016-06-29 牟维军 High intelligent mould

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201941123U (en) * 2010-07-19 2011-08-24 佛山市顺德区汉达精密电子科技有限公司 Signal connecting device for external equipment of injection molding machine
CN203680767U (en) * 2013-12-11 2014-07-02 东华大学 Mould monitor
CN204149426U (en) * 2014-09-27 2015-02-11 韶关亿利达机械有限公司 A kind of servo-electric injection machine
CN205343650U (en) * 2016-01-01 2016-06-29 牟维军 High intelligent mould

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