CN115302727B - Abnormity alarm analysis method in injection molding process - Google Patents
Abnormity alarm analysis method in injection molding process Download PDFInfo
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- CN115302727B CN115302727B CN202211239191.8A CN202211239191A CN115302727B CN 115302727 B CN115302727 B CN 115302727B CN 202211239191 A CN202211239191 A CN 202211239191A CN 115302727 B CN115302727 B CN 115302727B
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- injection molding
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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
- B29C45/76—Measuring, controlling or regulating
- B29C45/766—Measuring, controlling or regulating the setting or resetting of moulding conditions, e.g. before starting a cycle
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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
- B29C45/84—Safety devices
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of injection molding, in particular to an abnormal alarm analysis method in an injection molding process, which comprises the following steps: acquiring a first target parameter in an injection molding device; judging whether the first target parameter meets a first control condition; when the first target parameter meets a first control condition, controlling an alarm module to alarm; the first target parameter includes at least a first flow rate V1 of gas in the injection molding apparatus. The abnormity alarm analysis method in the injection molding process can timely acquire the abnormal injection molding condition in the injection molding process according to the difference between the gas flow rate in the injection molding device and the standard gas flow rate, can ensure the production efficiency, and can timely adjust the device to avoid unnecessary economic loss.
Description
Technical Field
The invention relates to the technical field of injection molding, in particular to an abnormal alarm analysis method in an injection molding process.
Background
In the injection molding industry, trapping of gas is one of the injection molding defects that are often encountered. The trapped air is easy to directly cause injection molding defects such as material shortage, scorching, air lines, surface fog and the like, and indirectly cause injection molding defects such as shrinkage marks, glass fiber exposure and the like.
The trapped gas is the phenomenon that in the process of injecting and filling the mold cavity, the gas in the mold cavity can not be discharged from the injection mold in time or can not be discharged from the injection mold, so that the rubber material is prevented from being continuously filled to cause injection molding defects such as material shortage, scorching and the like. In general, air trapping occurs during the process of filling the die cavity, and air trapping does not occur during the process of pressure maintaining and feeding. There are two sources of gas in the mold cavity: one source is the air in the mould cavity and the other source is the decomposition gases and small amounts of water vapour generated by the compound itself.
The trapped air can be divided into three types of bad air exhaust of a parting surface, trapped air at the tail end of deep tendon material flow and air inclusion according to the occurrence position; the trapped air can also reduce the exhaust clearance by the high mold temperature and the Gao Suomo force, and the exhaust effect is influenced; material decomposition, such as decomposition caused by cold material shear heat, material decomposition caused by too high material temperature, and material decomposition caused by shear heat caused by too high injection speed; the blocking of the exhaust grooves, especially the exhaust grooves on the sliding block, is easy to cause the blocking of lubricating oil and other three factors.
Most of the prior art detects products after injection molding is finished, abnormal conditions cannot be timely acquired in the injection molding process, and unnecessary economic loss and resource waste are easily caused.
Disclosure of Invention
The applicant finds that the injection molding machine is in the injection molding process, and due to various reasons, the produced product is possibly unqualified, most of the injection molding machines in the prior art detect the product after injection molding is completed, and unnecessary economic loss and resource waste are easily caused due to the fact that abnormal conditions cannot be timely obtained in the injection molding process.
The applicant also finds that the injection molding process is multi-stage injection molding, different injection molding stages are arranged according to the specific shape of a mold in the injection molding process, the injection molding speeds of the different injection molding stages are different, so that the exhaust speeds in the different stages are also different, the exhaust speed in the normal injection molding process is set to be the standard exhaust speed, then the exhaust speed obtained in the injection molding process is compared with the standard exhaust speed, the condition of injection molding work abnormity can be obtained in the injection molding process, and the injection molding machine can be overhauled or adjusted in time.
Therefore, it is necessary to provide an abnormal alarm analysis method in the injection molding process for solving the problems of the conventional injection molding device.
The above purpose is realized by the following technical scheme:
an abnormal alarm analysis method in an injection molding process comprises the following steps:
step S100, acquiring a first target parameter in the injection molding device;
step S110, judging whether the first target parameter meets a first control condition;
step S120, when the first target parameter meets the first control condition, controlling an alarm module to alarm;
the first target parameter includes at least a first flow rate V1 of gas within the injection molding apparatus.
In one embodiment, after step S100, the method further includes:
and S101, setting a first preset range and a first preset value according to a mold in the injection molding device.
In one embodiment, the first preset value includes at least a standard vent speed determined according to the mold.
In one embodiment, after step S120, the method further includes:
and step S121, when the first target parameter is lower than the first preset range, performing first-class alarm.
In one embodiment, after step S100, the method further includes:
step S102, acquiring a second target parameter in the injection molding device;
after step S120, the method further includes:
step S122, when the difference value between the first target parameter and the first preset value is the same as the difference value between the second target parameter and the first preset value, performing a second type of alarm;
the second target parameter comprises at least a second flow rate V2 of gas in the injection molding apparatus.
In one embodiment, the second flow rate V2 includes at least a gas flow rate in the exhaust manifold.
In one embodiment, after step S100, the method further includes:
step S103, acquiring a third target parameter in the injection molding device;
after step S120, the method further includes:
step S123, when the difference value between the first target parameter and the first preset value is different from the difference value between the third target parameter and the first preset value, a third type alarm is performed;
the third target parameter at least comprises a third flow velocity V3 of the gas in the injection molding apparatus.
In one embodiment, the third flow rate V3 includes at least a gas flow rate in the exhaust manifold.
In one embodiment, the first flow rate V1 includes at least a gas flow rate in the exhaust manifold.
The invention has the beneficial effects that:
the invention relates to an abnormal alarm analysis method in an injection molding process, which comprises the following steps: acquiring a first target parameter in an injection molding device; judging whether the first target parameter meets a first control condition; when the first target parameter meets a first control condition, controlling an alarm module to alarm; the first target parameter includes at least a first flow rate V1 of a gas in the injection molding apparatus. The abnormity alarm analysis method in the injection molding process can timely acquire the abnormal injection molding condition in the injection molding process according to the difference between the gas flow rate in the injection molding device and the standard gas flow rate, can ensure the production efficiency, and can timely adjust the device to avoid unnecessary economic loss.
Drawings
Fig. 1 is a flowchart of an implementation of an abnormal alarm analysis method in an injection molding process according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating another implementation of the method for analyzing an abnormal alarm in an injection molding process according to an embodiment of the present invention;
FIG. 3 is a flow chart of one implementation of a first type of alarm provided by an embodiment of the present invention;
FIG. 4 is a flowchart of one implementation of the second type of alarm and the third type of alarm provided by an embodiment of the present invention;
fig. 5 is a schematic perspective view of an injection molding apparatus according to an embodiment of the present invention.
Wherein:
100. injection molding a mold;
200. sealing the housing;
300. an exhaust manifold.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below by way of embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The numbering of the components themselves, such as "first", "second", etc., is used herein only to distinguish between the objects depicted and not to have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The application provides an unusual alarm analysis method of in-process of moulding plastics is applied to the device of moulding plastics, is provided with alarm module among the device of should moulding plastics, and this alarm module is used for monitoring exhaust velocity or the filling speed of the liquid of moulding plastics to report to the police when the filling speed of exhaust velocity or the liquid of moulding plastics is unusual.
Referring to fig. 1, fig. 1 is a flowchart of an implementation of an abnormal alarm analysis method in an injection molding process according to an embodiment of the present invention, which may include:
step S100, acquiring a first target parameter in the injection molding device;
the injection molding device is started after power is on. In the embodiment of the invention, before the injection molding device is started, the alarm module is closed. The first target parameter includes at least a first flow rate V1 of gas from an exhaust manifold in the injection molding apparatus.
Alternatively, the first target parameter may be a filling rate of the injection molding liquid.
Step S110: judging whether the first target parameter meets a first control condition;
step S120: and when the first target parameter meets the first control condition, controlling an alarm module to alarm.
In the embodiment of the invention, before the injection molding device is started, the alarm module is also closed. When the starting of the injection molding device is monitored, the alarm module is automatically started, and the first flow velocity V1 of the gas of the exhaust main pipe in the injection molding device is obtained.
Referring to fig. 2, fig. 2 is a flowchart of another implementation of the method for analyzing an abnormal alarm in an injection molding process according to an embodiment of the present invention, which may include:
and S101, setting a first preset range and a first preset value according to a mold in the injection molding device.
In the embodiment, the first preset range is a smaller range determined according to the actual exhaust speed of the injection molding device, and can be 0.01L/s-0.05L/s; the first preset value is the standard exhaust speed of the corresponding type of mould in the injection molding process, and can be 0.5L/s; when the first flow rate V1 is not equal to the standard exhaust rate, it indicates that the injection molding process is abnormal.
Or the first preset range is a smaller range determined according to the actual filling speed of the injection molding liquid of the injection molding device, and can be 0.01L/s-0.05L/s; the first preset value is a standard filling speed of a corresponding model mold in the injection molding process, and can be 0.5L/s; and when the filling speed of the injection molding liquid is not equal to the standard filling speed, indicating that the injection molding process is abnormal.
Referring to fig. 3, fig. 3 is a flowchart of an implementation of a first type of alarm according to an embodiment of the present invention, which may include:
step S121: and when the first target parameter is lower than the first preset range, performing first-class alarm.
When the first flow velocity V1 of the gas of the exhaust main pipe in the injection molding device is less than 0.01L/s, the exhaust velocity is almost zero, the exhaust groove is blocked, the first type of alarm is carried out at the moment, and then the injection molding device can be adjusted in time, so that the production quality is ensured, and the loss is reduced.
When the filling speed of the injection molding liquid in the injection molding device is less than 0.01L/s, the filling is extremely slow, and the exhaust groove is blocked, so that the first type of alarm is carried out, and the injection molding device can be adjusted in time, thereby ensuring the production quality and reducing the loss.
Referring to fig. 4, fig. 4 is a flowchart of an implementation of the second type of alarm and the third type of alarm according to an embodiment of the present invention, which may include:
step S102: acquiring a second target parameter in the injection molding device;
the second target parameter includes at least a second flow rate V2 of gas from an exhaust manifold in the injection molding apparatus.
Alternatively, the second target parameter may be a filling rate of the injection molding liquid.
Step S122: when the difference value between the first target parameter and the first preset value is the same as the difference value between the second target parameter and the first preset value, performing second-class alarm;
in the same corresponding injection molding stage, acquiring a second flow velocity V2 of the gas in the two exhaust manifolds, and comparing the difference value of the second flow velocity V2 of the gas in the two exhaust manifolds with the standard gas flow velocity; when the difference values are the same, the exhaust effect is influenced because the exhaust clearance caused by the high-mold temperature and the Gao Suomo force is reduced, the second type of alarm is carried out at the moment, and then the injection molding device can be adjusted in time, so that the production quality is ensured, and the loss is reduced.
In the same corresponding injection molding stage, acquiring the filling speeds of the injection molding liquid for two times, and comparing the difference value between the filling speeds of the injection molding liquid for two times and the standard filling speed; when the difference values are the same, the exhaust effect is influenced because the exhaust clearance caused by the high-mold temperature and the Gao Suomo force is reduced, the second type of alarm is carried out at the moment, and then the injection molding device can be adjusted in time, so that the production quality is ensured, and the loss is reduced.
The method can also comprise the following steps:
step S103: acquiring a third target parameter in the injection molding device;
the third target parameter includes at least a third flow rate V3 of gas from an exhaust manifold in the injection molding apparatus.
Alternatively, the third target parameter may be a filling rate of the injection liquid.
Step S123: when the difference value between the first target parameter and the first preset value is different from the difference value between the third target parameter and the first preset value, performing third-class alarm;
and in the same corresponding injection molding stage, acquiring a third flow velocity V3 of gas in the two-time exhaust main pipe, comparing the difference value of the third flow velocity V3 of the gas in the two-time exhaust main pipe with the standard gas flow velocity, and when the difference value is different, showing that the exhaust effect is influenced.
In the same corresponding injection molding stage, acquiring the filling speeds of the injection molding liquid for two times, and comparing the difference value between the filling speeds of the injection molding liquid for two times and the standard filling speed; when the difference is inequality, explain that the exhaust effect receives the influence, because the exhaust velocity inflection point is advanced, its inside trapping of gas that appears leads to the process of moulding plastics to get into next stage in advance, carries out the third class warning this moment, and then can be timely adjust the device of moulding plastics to guarantee production quality, reduce the loss.
Referring to fig. 5, fig. 5 is a schematic perspective view of an injection molding apparatus according to an embodiment of the present invention, which may include:
the first acquisition module is used for acquiring a first target parameter in the injection molding device;
the first judging module is used for judging whether the first target parameter meets a first control condition;
and the alarm module alarms when the first target parameter meets the first control condition.
The first acquisition module is a gas flow meter or a flow meter. The first judgment module and the alarm module are both controlled by an electric control.
In this embodiment, a hermetic container 200 is provided outside the injection mold 100, all the exhaust holes in the hermetic container 200 are connected to one manifold, and a gas flow rate meter for detecting the exhaust speed of the mold is provided in the exhaust manifold 300.
Or a flowmeter is arranged in the filling pipe and used for detecting the filling speed of the injection molding liquid.
The injection molding device adopts an injection molding in-process abnormity alarm analysis method, the specific condition of injection molding can be obtained through the exhaust condition of the mold or the speed of injection molding liquid, and then the exhaust condition or the standard injection speed of the mold is compared, so that the abnormal reason and the abnormal condition position can be obtained, the feedback can be timely obtained, the injection molding process can be timely adjusted, and the loss is reduced.
All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (4)
1. An abnormal alarm analysis method in an injection molding process is characterized by comprising the following steps:
step S100, acquiring a first target parameter in an injection molding device at the same corresponding injection molding stage;
s101, setting a first preset range and a first preset value according to a mold in the injection molding device;
the first preset value at least comprises a standard exhaust speed determined according to the mold, and the first preset range is a smaller range determined according to the actual exhaust speed of the injection molding device and is 0.01L/s to 0.05L/s;
step S102, acquiring a second target parameter in the injection molding device at the same corresponding injection molding stage;
the second target parameter comprises at least a second flow rate V2 of gas in the injection molding apparatus;
step S110, judging whether the first target parameter meets a first control condition;
step S120, when the first target parameter meets the first control condition, controlling an alarm module to alarm;
step S121, when the first target parameter is lower than the first preset range, performing first-class alarm;
step S122, when the difference value between the first target parameter and the first preset value is the same as the difference value between the second target parameter and the first preset value, performing a second type of alarm;
the first target parameter at least comprises a first flow velocity V1 of gas in the injection molding device;
the first flow rate V1 includes at least a gas flow rate in the exhaust manifold.
2. An injection molding in-process anomaly alarm analysis method according to claim 1, wherein said second flow rate V2 comprises at least a gas flow rate in an exhaust manifold.
3. The method for analyzing abnormal alarms during injection molding according to claim 1, further comprising, after step S100:
step S103, acquiring a third target parameter in the injection molding device at the same corresponding injection molding stage;
after step S120, the method further includes:
step S123, when the difference value between the first target parameter and the first preset value is different from the difference value between the third target parameter and the first preset value, a third type alarm is performed;
the third target parameter includes at least a third flow rate V3 of the gas in the injection molding apparatus.
4. An injection molding in-process anomaly alarm analysis method according to claim 3, wherein said third flow rate V3 comprises at least a gas flow rate in an exhaust manifold.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5426043B1 (en) * | 2013-05-13 | 2014-02-26 | スギヤマプラスチック株式会社 | Resin injection molding defect determination method and resin injection molding defect determination apparatus |
| CN105599254A (en) * | 2015-12-29 | 2016-05-25 | 珠海格力电器股份有限公司 | Injection mold monitoring method and device |
| CN108621394A (en) * | 2018-04-02 | 2018-10-09 | 滁州晨润工贸有限公司 | A kind of parameter monitoring method in injection moulding process |
| CN112356409A (en) * | 2020-10-23 | 2021-02-12 | 深圳振业企业管理咨询有限公司 | Intelligent injection molding process monitoring system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5426043B1 (en) * | 2013-05-13 | 2014-02-26 | スギヤマプラスチック株式会社 | Resin injection molding defect determination method and resin injection molding defect determination apparatus |
| CN105599254A (en) * | 2015-12-29 | 2016-05-25 | 珠海格力电器股份有限公司 | Injection mold monitoring method and device |
| CN108621394A (en) * | 2018-04-02 | 2018-10-09 | 滁州晨润工贸有限公司 | A kind of parameter monitoring method in injection moulding process |
| CN112356409A (en) * | 2020-10-23 | 2021-02-12 | 深圳振业企业管理咨询有限公司 | Intelligent injection molding process monitoring system |
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