CN112976519B - Self-adjusting method for clamping force of two-plate machine - Google Patents

Self-adjusting method for clamping force of two-plate machine Download PDF

Info

Publication number
CN112976519B
CN112976519B CN202110157996.7A CN202110157996A CN112976519B CN 112976519 B CN112976519 B CN 112976519B CN 202110157996 A CN202110157996 A CN 202110157996A CN 112976519 B CN112976519 B CN 112976519B
Authority
CN
China
Prior art keywords
mold
locking force
current
adjusted
injection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110157996.7A
Other languages
Chinese (zh)
Other versions
CN112976519A (en
Inventor
邓俊钧
罗力
苏旭波
项蔚翔
高林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bole Intelligent Equipment Co ltd
Original Assignee
Bole Intelligent Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bole Intelligent Equipment Co ltd filed Critical Bole Intelligent Equipment Co ltd
Priority to CN202110157996.7A priority Critical patent/CN112976519B/en
Publication of CN112976519A publication Critical patent/CN112976519A/en
Application granted granted Critical
Publication of CN112976519B publication Critical patent/CN112976519B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • B29C45/7653—Measuring, controlling or regulating mould clamping forces
    • 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
    • B29C2945/76822—Phase or stage of control
    • B29C2945/76869—Mould clamping, compression of the cavity

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a self-adjusting method of mold locking force of two plate machines, which is characterized in that before production, initial factory mold locking force, deviation value of allowable adjustment of each mold, micro deviation value of allowable adjustment of each mold, adjustment value of allowable adjustment of each mold, micro adjustment value of allowable adjustment of each mold and injection process parameters are set according to the size of the mold, and the change of the mold locking force of the mold in the injection production process is monitored in real time through a mold locking force sensor; after N mode, starting a mode locking force self-adjusting mode; in the mode of self-adjusting the mold locking force, adjusting the initial mold locking force of the next mold according to the mold locking force when the current mold starts high pressure, the mold locking force in the current mold injection pressure maintaining stage and the initial mold locking force of the current mold; the mold clamping force sensor has the advantages that the initial mold clamping force of the next mold is automatically adjusted through real-time monitoring of the mold clamping force change of the current mold by the mold clamping force sensor, so that the abrasion of the mold is reduced, the probability of scorching of the produced product is reduced, unnecessary energy consumption in the production process is reduced, and the productivity is improved.

Description

Self-adjusting method for clamping force of two-plate machine
Technical Field
The invention relates to a self-adjusting method, in particular to a self-adjusting method for the clamping force of two plate machines.
Background
In the injection molding production process of the injection molding machine, a movable mold and a fixed mold need to be tightly combined together, then molten plastic is injected into a mold cavity from a charging barrel, and the mold is opened after cooling is completed to form a product. To prevent the parting plane of the mold from being pushed open by the mold cavity pressure during the injection phase, a sufficient mold clamping force must be applied to the mold, otherwise the parting plane of the mold will be pushed open, resulting in flash.
Before production, the set mold locking force is larger than the force for opening the parting surface of the mold by molten plastic, but the excessive mold locking force not only accelerates the abrasion of the mold and reduces the breathing and exhaust of the mold, so that the scorching phenomenon of the produced product is caused, but also unnecessary energy consumption is increased. In addition, in the injection molding production process of the injection molding machine, in the process of injecting molten plastic into the mold cavity, the pull rod is deformed due to the increase of the pressure of the mold cavity, and the deformation of the pull rod can change the mold locking force.
Disclosure of Invention
The invention aims to solve the technical problem of providing a self-adjusting method for the clamping force of two plate machines, which not only reduces the abrasion of a mould and the probability of scorching of the produced product, but also reduces some unnecessary energy consumption in the production process and improves the productivity.
The technical scheme adopted by the invention for solving the technical problems is as follows: a self-adjusting method for clamping force of two-plate machine comprises the following steps:
Figure 803967DEST_PATH_IMAGE001
before production begins, setting initial factory mold locking force Fn according to the mold locking force specified by mold factory, and setting a deviation value F1 allowed to be adjusted for each mold, a micro deviation value F1a allowed to be adjusted for each mold, an adjustment value F2 allowed to be adjusted for each mold and a micro adjustment value F2a allowed to be adjusted for each mold; setting injection process parameters according to the types of products actually produced; monitoring the change of the mold clamping force in the injection molding production process in real time through a mold clamping force sensor;
Figure 4004DEST_PATH_IMAGE002
starting injection molding production, and entering the step after N mold
Figure 262947DEST_PATH_IMAGE003
Starting a mode locking force self-adjusting mode and taking Fn as the initial mode locking force of a first mode in the mode locking force self-adjusting mode;
Figure 922336DEST_PATH_IMAGE003
in the mode of self-adjusting the mold locking force, the mold locking force when the current mold starts high pressure in the injection production process and the mold locking force in the injection pressure maintaining stage are recorded, and the mold locking force when the current mold starts high pressure, the mold locking force in the current mold injection pressure maintaining stage and the current mold locking force are recordedAnd the initial mold locking force of the mold is adjusted to obtain the adjusted mold locking force, and the adjusted mold locking force is used as the initial mold locking force of the next mold.
The steps are
Figure 331452DEST_PATH_IMAGE002
Wherein N has a value range of
Figure 385996DEST_PATH_IMAGE004
。
The steps are
Figure 81419DEST_PATH_IMAGE003
The specific method for obtaining the adjusted mold locking force according to the mold locking force when the current mold starts to have high pressure, the mold locking force in the current mold injection pressure maintaining stage and the initial mold locking force of the current mold is as follows:
recording the mold locking force during the high pressure of the current mold as Fa and the mold locking force during the pressure maintaining stage of the current mold injection as Fb, judging the difference value between the mold locking force Fb during the pressure maintaining stage of the current mold injection and the mold locking force Fa during the high pressure of the current mold, and if the difference value between the mold locking force Fb during the pressure maintaining stage of the current mold injection and the mold locking force Fa during the high pressure of the current mold start is smaller than or equal to a set micro deviation value F1a allowed to be adjusted by each mold, the adjusted mold locking force is the initial mold locking force of the current mold; if the difference value between the mold locking force Fb in the current mold injection pressure maintaining stage and the mold locking force Fa in the current mold high pressure starting process is larger than the set micro deviation value F1a allowed to be adjusted for each mold and is smaller than or equal to the set micro deviation value F1 allowed to be adjusted for each mold, the adjusted mold locking force is obtained by subtracting the micro adjustment value F2a allowed to be adjusted for each mold from the initial mold locking force of the current mold; if the difference value between the mold locking force Fb in the current mold injection pressure maintaining stage and the mold locking force Fa in the current mold high pressure starting process is larger than the set deviation value F1 of each mold allowable adjustment, the adjusted mold locking force is the initial mold locking force of the current mold minus the adjustment value F2 of each mold allowable adjustment.
The steps are
Figure 729569DEST_PATH_IMAGE003
The method also comprises the following steps: if the injection process parameters are changed in the injection molding production process, returningExecution step
Figure 270272DEST_PATH_IMAGE002
。
Compared with the prior art, the invention has the advantages that the initial factory-leaving mold-locking force, the deviation value of each mold allowable adjustment, the micro deviation value of each mold allowable adjustment, the adjustment value of each mold allowable adjustment, the micro adjustment value of each mold allowable adjustment and the injection process parameter are set according to the size of the mold before the production is started, and the real-time change of the mold-locking force in the injection production process is monitored in real time through the mold-locking force sensor; after passing through the N mode, starting a mode locking force self-adjusting mode; in the mode of self-adjusting the mold locking force, recording the mold locking force when the current mold starts high pressure in the injection production process and the mold locking force in the injection pressure maintaining stage, and adjusting the initial mold locking force of the next mold according to the mold locking force when the current mold starts high pressure, the mold locking force in the injection pressure maintaining stage of the current mold and the initial mold locking force of the current mold; if the injection technological parameters are changed in the injection production process, starting a mode locking force self-adjusting mode after passing through the N mode again; the initial mold locking force of the next mold is automatically adjusted by monitoring the change of the mold locking force of the current mold in real time through the mold locking force sensor, so that the abrasion of the mold is reduced, the probability of scorching of the produced product is reduced, unnecessary energy consumption in the production process is reduced, the productivity is improved, and the waste is reduced.
Drawings
FIG. 1 is a schematic general flow diagram of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1, a method for self-adjusting clamping force of two-plate machine comprises the following steps:
Figure 320268DEST_PATH_IMAGE001
before the production is started, the initial factory mold clamping force Fn is set according to the mold clamping force specified by the factory production of the mold, and a deviation value F1 of each mold allowing adjustment, a micro deviation value F1a of each mold allowing adjustment, and each mold allowing adjustment are setAn adjustment allowed value F2 and a fine adjustment allowed value F2a per mode; setting injection process parameters according to the types of products actually produced; monitoring the change of the mold clamping force in the injection molding production process in real time through a mold clamping force sensor;
Figure 921013DEST_PATH_IMAGE002
starting injection molding production, and entering the step after N mold
Figure 915514DEST_PATH_IMAGE003
Starting a mode locking force self-adjusting mode and taking Fn as the initial mode locking force of a first mode in the mode locking force self-adjusting mode; step (ii) of
Figure 259908DEST_PATH_IMAGE002
Wherein N has a value range of
Figure 397366DEST_PATH_IMAGE004
(ii) a The first mode is the N +1 th mode;
Figure 434592DEST_PATH_IMAGE003
in the mode of mold locking force self-adjustment, recording the mold locking force when the current mold starts high pressure in the injection production process and the mold locking force in the injection pressure maintaining stage, obtaining the adjusted mold locking force according to the mold locking force when the current mold starts high pressure, the mold locking force in the current mold injection pressure maintaining stage and the initial mold locking force of the current mold, and taking the adjusted mold locking force as the initial mold locking force of the next mold;
Step (ii) of
Figure 916389DEST_PATH_IMAGE003
The specific method for obtaining the adjusted mold locking force according to the mold locking force when the current mold starts to have high pressure, the mold locking force in the current mold injection pressure maintaining stage and the initial mold locking force of the current mold is as follows:
recording the mold locking force during the high pressure of the current mold as Fa and the mold locking force during the pressure maintaining stage of the current mold injection as Fb, judging the difference value between the mold locking force Fb during the pressure maintaining stage of the current mold injection and the mold locking force Fa during the high pressure of the current mold, and if the difference value between the mold locking force Fb during the pressure maintaining stage of the current mold injection and the mold locking force Fa during the high pressure of the current mold start is smaller than or equal to a set micro deviation value F1a allowed to be adjusted by each mold, the adjusted mold locking force is the initial mold locking force of the current mold; if the difference value between the mold locking force Fb in the current mold injection pressure maintaining stage and the mold locking force Fa in the current mold high pressure starting process is larger than the set micro deviation value F1a allowed to be adjusted for each mold and is smaller than or equal to the set micro deviation value F1 allowed to be adjusted for each mold, the adjusted mold locking force is obtained by subtracting the micro adjustment value F2a allowed to be adjusted for each mold from the initial mold locking force of the current mold; if the difference value between the mold locking force Fb in the current mold injection pressure maintaining stage and the mold locking force Fa when the current mold starts to have high pressure is larger than the set deviation value F1 of each mold allowed to be adjusted, the adjusted mold locking force is the initial mold locking force of the current mold minus the adjustment value F2 of each mold allowed to be adjusted;
The method specifically comprises the following steps: in the mode of self-adjusting the mold locking force, the initial mold locking force of the (N + 1) th mold is Fn, the mold locking force when the (N + 1) th mold starts high pressure is recorded as Fa1, and the mold locking force in the injection pressure maintaining stage of the (N + 1) th mold is recorded as Fb 1; initial clamping force of the N +2 th mode
Figure 939840DEST_PATH_IMAGE005
Comprises the following steps:
Figure 557903DEST_PATH_IMAGE006
；
recording the mold locking force when the mold (N + 2) is lifted to high pressure as Fa2, and recording the mold locking force in the injection pressure maintaining stage of the mold (N + 2) as Fb 2; initial clamping force of the N +3 th mode
Figure 31610DEST_PATH_IMAGE007
Comprises the following steps:
Figure 610490DEST_PATH_IMAGE008
。
step (ii) of
Figure 296686DEST_PATH_IMAGE003
The method also comprises the following steps: if it is produced by injection moldingIf the injection process parameters are changed in the process, returning to the execution step
Figure 34835DEST_PATH_IMAGE002
。

Claims (3)

1. A self-adjusting method for mold clamping force of two-plate machines is characterized by comprising the following steps:
firstly, before production starts, setting initial factory mold locking force Fn according to the mold locking force specified by mold factory, and setting a deviation value F1 allowed to be adjusted for each mold, a micro deviation value F1a allowed to be adjusted for each mold, an adjustment value F2 allowed to be adjusted for each mold and a micro adjustment value F2a allowed to be adjusted for each mold; setting injection process parameters according to the types of products actually produced; monitoring the change of the mold clamping force in the injection molding production process in real time through a mold clamping force sensor;
starting injection molding production, after N die, entering a step III of starting a die locking force self-adjusting mode and taking Fn as the initial die locking force of a first die in the die locking force self-adjusting mode;
Recording the mold locking force when the current mold starts high pressure and the mold locking force in the injection pressure maintaining stage in the injection molding production process in the mold locking force self-adjusting mode, obtaining the adjusted mold locking force according to the mold locking force when the current mold starts high pressure, the mold locking force in the current mold injection pressure maintaining stage and the initial mold locking force of the current mold, and taking the adjusted mold locking force as the initial mold locking force of the next mold;
the specific method for obtaining the adjusted clamping force comprises the following steps: recording the mold locking force during the high pressure of the current mold as Fa and the mold locking force during the pressure maintaining stage of the current mold injection as Fb, judging the difference value between the mold locking force Fb during the pressure maintaining stage of the current mold injection and the mold locking force Fa during the high pressure of the current mold, and if the difference value between the mold locking force Fb during the pressure maintaining stage of the current mold injection and the mold locking force Fa during the high pressure of the current mold start is smaller than or equal to a set micro deviation value F1a allowed to be adjusted by each mold, the adjusted mold locking force is the initial mold locking force of the current mold; if the difference value between the mold locking force Fb in the current mold injection pressure maintaining stage and the mold locking force Fa in the current mold high pressure starting process is larger than the set micro deviation value F1a allowed to be adjusted for each mold and is smaller than or equal to the set micro deviation value F1 allowed to be adjusted for each mold, the adjusted mold locking force is obtained by subtracting the micro adjustment value F2a allowed to be adjusted for each mold from the initial mold locking force of the current mold; if the difference value between the mold locking force Fb in the current mold injection pressure maintaining stage and the mold locking force Fa in the current mold high pressure starting process is larger than the set deviation value F1 of each mold allowable adjustment, the adjusted mold locking force is the initial mold locking force of the current mold minus the adjustment value F2 of each mold allowable adjustment.
2. The self-adjusting method for mold clamping force of two plate machines as claimed in claim 1, wherein the value of N in the step (II) is N ≥ 30.
3. The method for self-adjusting clamping force of two-plate machine according to claim 1, wherein the step (c) further comprises: and if the injection process parameters are changed in the injection molding production process, returning to the execution step II.
CN202110157996.7A 2021-02-05 2021-02-05 Self-adjusting method for clamping force of two-plate machine Active CN112976519B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110157996.7A CN112976519B (en) 2021-02-05 2021-02-05 Self-adjusting method for clamping force of two-plate machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110157996.7A CN112976519B (en) 2021-02-05 2021-02-05 Self-adjusting method for clamping force of two-plate machine

Publications (2)

Publication Number Publication Date
CN112976519A CN112976519A (en) 2021-06-18
CN112976519B true CN112976519B (en) 2022-06-28

Family

ID=76347334

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110157996.7A Active CN112976519B (en) 2021-02-05 2021-02-05 Self-adjusting method for clamping force of two-plate machine

Country Status (1)

Country Link
CN (1) CN112976519B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116353007B (en) * 2023-03-02 2023-10-20 博创智能装备股份有限公司 Intelligent pressure maintaining control method of hydraulic injection molding machine

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11147242A (en) * 1997-11-18 1999-06-02 Sumitomo Heavy Ind Ltd Mold clamping device
JP2001150505A (en) * 1999-11-29 2001-06-05 Ube Ind Ltd Method and apparatus for controlling mold clamping force in injection molding machine
JP2004122579A (en) * 2002-10-02 2004-04-22 Fanuc Ltd Injection-molding machine
JP2009172923A (en) * 2008-01-25 2009-08-06 Fanuc Ltd Injection molding machine having function of adjusting mold clamping force
CN103950168A (en) * 2014-05-05 2014-07-30 宁波伊士通技术股份有限公司 Method for solving problem of die locking force change in production process of injection molding machine
CN106313463A (en) * 2016-10-20 2017-01-11 德马格塑料机械（宁波）有限公司 Mold adjustment and mold clamping force adjustment structure applied to injection molding machine and using method thereof
CN108608627A (en) * 2016-12-09 2018-10-02 富强鑫精密工业股份有限公司 Molding machine mode locking force setting method and its system
CN109278265A (en) * 2017-07-20 2019-01-29 富强鑫精密工业股份有限公司 For the mode locking Force control system of molding machine, control method and monitoring compensation method
CN110640983A (en) * 2019-10-29 2020-01-03 宁波创基机械有限公司 Automatic adjusting device and method for mold clamping force of injection molding machine
CN212045866U (en) * 2019-10-29 2020-12-01 宁波创基机械有限公司 Automatic adjusting device for mold locking force of injection molding machine

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11147242A (en) * 1997-11-18 1999-06-02 Sumitomo Heavy Ind Ltd Mold clamping device
JP2001150505A (en) * 1999-11-29 2001-06-05 Ube Ind Ltd Method and apparatus for controlling mold clamping force in injection molding machine
JP2004122579A (en) * 2002-10-02 2004-04-22 Fanuc Ltd Injection-molding machine
JP2009172923A (en) * 2008-01-25 2009-08-06 Fanuc Ltd Injection molding machine having function of adjusting mold clamping force
CN103950168A (en) * 2014-05-05 2014-07-30 宁波伊士通技术股份有限公司 Method for solving problem of die locking force change in production process of injection molding machine
CN106313463A (en) * 2016-10-20 2017-01-11 德马格塑料机械（宁波）有限公司 Mold adjustment and mold clamping force adjustment structure applied to injection molding machine and using method thereof
CN108608627A (en) * 2016-12-09 2018-10-02 富强鑫精密工业股份有限公司 Molding machine mode locking force setting method and its system
CN109278265A (en) * 2017-07-20 2019-01-29 富强鑫精密工业股份有限公司 For the mode locking Force control system of molding machine, control method and monitoring compensation method
CN110640983A (en) * 2019-10-29 2020-01-03 宁波创基机械有限公司 Automatic adjusting device and method for mold clamping force of injection molding machine
CN212045866U (en) * 2019-10-29 2020-12-01 宁波创基机械有限公司 Automatic adjusting device for mold locking force of injection molding machine

Also Published As

Publication number Publication date
CN112976519A (en) 2021-06-18

Similar Documents

Publication Publication Date Title
EP0130769A1 (en) Compression molding method
EP2950993B1 (en) Vacuum molding of thermoset sheet articles
CN112976519B (en) Self-adjusting method for clamping force of two-plate machine
WO2004048067A1 (en) In-mold coat-forming method and in-mold-coated mold product
CN107443687A (en) A kind of air-conditioning moulding injection mold and injection moulding process with contraction distortion control
CN109605695B (en) Multi-stage mold locking molding method for injection molding machine
US5399303A (en) Method of controlling resin molding conditions
JP3918386B2 (en) Method and apparatus for controlling mold clamping force of injection molding machine
CN113059774B (en) Method for controlling injection molding pressure maintaining process
CN106273240B (en) A kind of extraneous gas aid injection molding method and apparatus based on pressure measurement
CN113001920B (en) Method for setting optimal mold clamping force of hydraulic mold clamping mechanism
CN114770890A (en) Thick-wall highlight transparent injection molding forming process
CN202388722U (en) Injection mold capable of automatically removing nozzle
CN105149584B (en) A kind of powder injecting molding die and its application method
CN209649403U (en) A kind of core-pulling mechanism of injection mold
CN111993636A (en) Injection molding process special for silicon hydrogel contact lens mold
JPS6218234A (en) Injection molding process
JP4867420B2 (en) In-mold coating molding method
CN207240734U (en) A kind of air-conditioning moulding injection mold with contraction distortion control
CN113232250B (en) Battery cover of electronic equipment and processing method
JP2008126637A (en) Preform compression mold
JP3237496B2 (en) Injection molding method
CN208812447U (en) Lateral tongue and groove injection mold
JPH0686074B2 (en) In-mold coating method for plastics
EP3895871B1 (en) Injection molding apparatus and injection molding method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information
CB02 Change of applicant information

Address after: 315821 Jiangnan export processing trade zone, Beilun District, Ningbo City, Zhejiang Province

Applicant after: Bole Intelligent Equipment Co.,Ltd.

Address before: 315821 Jiangnan export processing trade zone, Beilun District, Ningbo City, Zhejiang Province

Applicant before: NINGBO SHUANGMA MACHINERY INDUSTRY Co.,Ltd.

Address after: 337000 Qingyuan Industrial Park, Anyuan Industrial Park, Anyuan District, Pingxiang City, Jiangxi Province

Applicant after: Bole Intelligent Equipment Co.,Ltd.

Address before: 315821 Jiangnan export processing trade zone, Beilun District, Ningbo City, Zhejiang Province

Applicant before: Bole Intelligent Equipment Co.,Ltd.

GR01 Patent grant
GR01 Patent grant