CN108859036B - Direct-pressure injection molding machine mold closing control method and system - Google Patents
Direct-pressure injection molding machine mold closing control method and system Download PDFInfo
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- CN108859036B CN108859036B CN201710335715.6A CN201710335715A CN108859036B CN 108859036 B CN108859036 B CN 108859036B CN 201710335715 A CN201710335715 A CN 201710335715A CN 108859036 B CN108859036 B CN 108859036B
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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
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/67—Mould opening, closing or clamping devices hydraulic
- B29C45/6778—Stroke adjusting or limiting means
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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
- B29C45/80—Measuring, controlling or regulating of relative position of mould parts
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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
- B29C2045/7606—Controlling or regulating the display unit
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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
- 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
- B29C2945/76655—Location of control
- B29C2945/76702—Closure or clamping device
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a direct-pressure injection molding machine mold closing control method and a system, wherein the method comprises the following steps: acquiring an actual voltage value of a switch die scale after die opening and pressure relief of the injection molding machine; calculating the actual position of the switch template according to the actual voltage value of the switch template; calculating the actual mold closing low-voltage termination position according to the actual position of the mold opening and closing ruler; judging whether the deviation value between the actual mold closing low-pressure termination position and the reference mold closing low-pressure termination position is larger than a preset error value, if so, taking the actual mold closing low-pressure termination position as a target mold closing low-pressure termination position of the next mold, and if not, taking the reference mold closing low-pressure termination position as a target mold closing low-pressure termination position of the next mold; and controlling the injection molding machine to close the mold to a target mold closing low-pressure termination position. The direct-pressing injection molding machine mold closing control method provided by the invention effectively improves the mold closing accuracy, avoids economic loss caused by mold closing failure, can reduce the labor intensity of workers through automatic control, and saves human resources.
Description
Technical Field
The invention relates to the field of injection molding machine equipment, in particular to a direct-pressure injection molding machine mold closing control method and system.
Background
The injection molding machine is divided into three categories according to the mechanical structure of a switching die, namely a straight press, a flashboard machine and a crank arm machine, when the injection molding machine is in normal production, dies are slowly subjected to thermal expansion, when the dies are heated and expanded to a certain degree, the die closing failure can be caused, and at the moment, the production can not be continued.
In the prior art, when a mold expansion problem occurs, a controller of an injection molding machine alarms, mold closing protection fails, at this time, a machine adjusting person needs to return the machine to a manual state, clear the alarm, then switch the machine to a coarse mold adjusting state, press a mold closing button on a panel, perform mold closing action until a mold is attached, a template cannot move, then reach a correction picture of the panel, zero a position ruler, press a mold opening button on the panel after zero is completed, until mold opening is completed, and then enter an automatic state to perform production after the coarse mold adjusting state returns to the manual state.
The adjustment mode of the expansion die in the prior art is manually adjusted, and the defects of the adjustment mode include the following points:
1) manual operation is required: wasting human resources.
2) In operation, people encounter various problems, such as: the zeroing operation can not be performed, the panel picture can not be found, and the knowledge needs to be trained.
3) Time is wasted: when the tuning personnel adjust the parameters, the production time is wasted.
4) Raw material waste: when the parameters are adjusted, the raw material in the current mold material pipe is too long in heating time, so that the raw material is wasted.
Therefore, how to effectively improve the mold closing efficiency and precision of the injection molding machine and reduce the influence of human factors is a technical problem to be solved by technical personnel in the field at present.
Disclosure of Invention
The invention aims to provide a direct-pressure injection molding machine mold closing control method and a direct-pressure injection molding machine mold closing control system, which are used for improving the mold closing precision and efficiency of an injection molding machine and saving resources and labor.
In order to achieve the purpose, the invention provides the following technical scheme:
a direct-pressure injection molding machine mold closing control method comprises the following steps:
step S1: acquiring an actual voltage value of a switch die scale after die opening and pressure relief of the injection molding machine;
step S2: calculating the actual position of the switch template according to the actual voltage value of the switch template;
step S3: calculating the actual mold closing low-voltage termination position according to the actual position of the mold opening and closing ruler;
step S4: judging whether the deviation value between the actual mold closing low-pressure termination position and the reference mold closing low-pressure termination position is larger than a preset error value, if so, taking the actual mold closing low-pressure termination position as a target mold closing low-pressure termination position of the next mold, and if not, taking the reference mold closing low-pressure termination position as a target mold closing low-pressure termination position of the next mold;
step S5: and controlling the injection molding machine to close the mold to the target mold closing low-pressure termination position.
Preferably, in step S3, the actual mold closing low-pressure end position is calculated according to the actual position of the mold opening and closing ruler, specifically, the actual mold closing low-pressure end position is calculated according to formula (1):
K＝X+Y/Z (1)
wherein: k is the actual mold closing low-pressure termination position; x is the actual position of a mold opening and closing ruler after mold opening and pressure relief of the injection molding machine in an automatic state are finished; y is a reference mold closing low-pressure termination position; and Z is the relevant coefficient of the tonnage of the machine.
Preferably, the step S5 specifically includes:
and sending the target mold closing low-pressure end position to a driver, wherein the driver controls a motor to rotate, and pushes a mold locking oil cylinder to move the movable mold plate to a mold closing state.
Preferably, between the step S4 and the step S5, the method further includes:
step S4A: and starting the actual position of the mold opening and closing ruler and the actual mold closing low-voltage termination position to a human-computer interaction display.
Preferably, the step S4A further includes:
and inputting the preset error value through the human-computer interaction display.
A direct-pressure injection molding machine mold closing control system comprises a movable mold plate, a fixed mold plate, a mold moving oil cylinder for moving the movable mold plate, a mold locking oil cylinder for controlling locking of the movable mold plate, a mold opening and closing ruler for displaying the moving position of the movable mold plate and a controller, wherein the controller is connected with the mold opening and closing ruler and the mold locking oil cylinder;
the controller is configured to:
acquiring an actual voltage value of a switch die scale after die opening and pressure relief of the injection molding machine; calculating the actual position of the switch template according to the actual voltage value of the switch template; calculating the actual mold closing low-voltage termination position according to the actual position of the mold opening and closing ruler; judging whether the deviation value between the actual mold closing low-pressure termination position and the reference mold closing low-pressure termination position is larger than a preset error value, if so, taking the actual mold closing low-pressure termination position as a target mold closing low-pressure termination position of the next mold, and if not, taking the reference mold closing low-pressure termination position as a target mold closing low-pressure termination position of the next mold; and controlling the injection molding machine to close the mold to the target mold closing low-pressure termination position.
Preferably, the controller is configured to calculate the actual mold closing low-pressure termination position according to formula (1):
K＝X+Y/Z (1)
wherein: k is the actual mold closing low-pressure termination position; x is the actual position of a mold opening and closing ruler after mold opening and pressure relief of the injection molding machine in an automatic state are finished; y is a reference mold closing low-pressure termination position; and Z is the relevant coefficient of the tonnage of the machine.
Preferably, the mould locking device further comprises a driver for controlling the mould locking oil cylinder to move, and the controller is connected with the driver;
the controller is also used for sending the target mold closing low-pressure termination position to a driver.
Preferably, the system further comprises a human-computer interaction display, wherein the human-computer interaction display is used for a worker to input the preset error value;
and the controller is also used for sending the actual position of the mold opening and closing ruler and the actual mold closing low-voltage termination position to a human-computer interaction display.
Preferably, the controller is connected with the switch module ruler through a CAN bus.
The invention provides a direct-pressure injection molding machine mold closing control method, which comprises the following steps: acquiring an actual voltage value of a switch die scale after die opening and pressure relief of the injection molding machine; calculating the actual position of the switch template according to the actual voltage value of the switch template; calculating the actual mold closing low-voltage termination position according to the actual position of the mold opening and closing ruler; judging whether the deviation value between the actual mold closing low-pressure termination position and the reference mold closing low-pressure termination position is larger than a preset error value, if so, taking the actual mold closing low-pressure termination position as a target mold closing low-pressure termination position of the next mold, and if not, taking the reference mold closing low-pressure termination position as a target mold closing low-pressure termination position of the next mold; and controlling the injection molding machine to close the mold to the target mold closing low-pressure termination position.
According to the direct-pressure injection molding machine mold closing control method, the actual position of the mold closing ruler is calculated through the actual voltage value of the mold closing ruler, and a proper position is selected as a target mold closing low-pressure termination position through a comparison result between the actual position of the mold closing ruler and the reference mold closing low-pressure termination position, so that the mold closing low-pressure termination position of the injection molding machine can be in accordance with the position of the expanded mold, the mold closing accuracy is improved, economic loss caused by mold closing failure is avoided, meanwhile, the labor intensity of workers can be reduced through automatic control, and human resources are saved.
The invention provides a direct-pressure injection molding machine mold closing control system, which comprises a movable mold plate, a fixed mold plate, a mold moving oil cylinder for moving the movable mold plate, a mold locking oil cylinder for controlling and locking the movable mold plate, a mold opening and closing ruler for displaying the moving position of the movable mold plate and a controller, wherein the controller is connected with the mold opening and closing ruler and the mold locking oil cylinder; the controller is configured to: acquiring an actual voltage value of a switch die scale after die opening and pressure relief of the injection molding machine; calculating the actual position of the switch template according to the actual voltage value of the switch template; calculating the actual mold closing low-voltage termination position according to the actual position of the mold opening and closing ruler; judging whether the deviation value between the actual mold closing low-pressure termination position and the reference mold closing low-pressure termination position is larger than a preset error value, if so, taking the actual mold closing low-pressure termination position as a target mold closing low-pressure termination position of the next mold, and if not, taking the reference mold closing low-pressure termination position as a target mold closing low-pressure termination position of the next mold; and controlling the injection molding machine to close the mold to the target mold closing low-pressure termination position.
According to the direct-pressure injection machine mold closing control system, the controller is connected with the switch mold ruler and the mold locking oil cylinder, the actual position of the switch mold ruler is calculated according to the actual voltage value of the switch mold ruler, and a proper position is selected as a target mold closing low-voltage end position according to a comparison result between the actual position of the switch mold ruler and the reference mold closing low-voltage end position, so that the accuracy of mold closing can be effectively improved, economic loss caused by mold closing failure is avoided, meanwhile, the labor intensity of workers can be reduced through automatic control, and manpower resources are saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method for controlling mold closing of a direct-pressure injection molding machine according to the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of a direct-pressure injection molding machine mold closing control system provided by the present invention;
wherein: 1-moving template, 2-fixed template, 3-moving mould oil cylinder, 4-locking mould oil cylinder and 5-switching mould ruler.
Detailed Description
The core of the invention is to provide a direct-pressure injection molding machine mold closing control method and a direct-pressure injection molding machine mold closing control system, which are used for improving the mold closing precision and efficiency of an injection molding machine and saving resources and labor force.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and fig. 2, fig. 1 is a flowchart of a mold closing control method of a direct-pressure injection molding machine according to the present invention; fig. 2 is a schematic structural diagram of an embodiment of a direct-pressure injection molding machine mold closing control system provided by the present invention.
In this embodiment, as shown in fig. 1, the method for controlling mold closing of a direct-pressure injection molding machine includes the steps of:
step S1: acquiring an actual voltage value of a switch die scale after die opening and pressure relief of the injection molding machine; specifically, the controller CAN be connected with a switch module ruler through communication, specifically CAN be connected with a CAN bus, and the switch module ruler sends the voltage value of the switch module ruler to the controller;
step S2: calculating the actual position of the switch template according to the actual voltage value of the switch template;
step S3: calculating the actual mold closing low-voltage termination position according to the actual position of the mold opening and closing ruler;
step S4: judging whether the deviation value between the actual mold closing low-pressure termination position and the reference mold closing low-pressure termination position is larger than a preset error value, namely whether the distance between the actual mold closing low-pressure termination position and the reference mold closing low-pressure termination position is larger than the preset error value, if so, taking the actual mold closing low-pressure termination position as a target mold closing low-pressure termination position of the next mold, and if not, taking the reference mold closing low-pressure termination position as a target mold closing low-pressure termination position of the next mold; it should be noted that, when the injection molding machine is used for opening the mold for the first time, the reference mold closing low-pressure end position may be a preset mold closing low-pressure end position, and when the injection molding machine is not used for opening the mold for the first time, the reference mold closing low-pressure end position is the determined mold closing low-pressure end position after the mold is opened for the last time;
step S5: and controlling the injection molding machine to close the mold to a target mold closing low-pressure termination position, wherein the target mold closing low-pressure termination position is the optimal mold closing low-pressure termination position of the injection molding machine.
According to the direct-pressure injection molding machine mold closing control method, the actual position of the mold closing ruler is calculated through the actual voltage value of the mold closing ruler, and a proper position is selected as the target mold closing low-pressure termination position through the comparison result between the actual position of the mold closing ruler and the reference mold closing low-pressure termination position, so that the mold closing low-pressure termination position of the injection molding machine can be in accordance with the position of the expanded mold, the mold closing accuracy is improved, economic loss caused by mold closing failure is avoided, meanwhile, the labor intensity of workers can be reduced through automatic control, and human resources are saved. In addition to the above embodiments, in step S3, the actual mold closing low pressure end position is calculated according to the actual position of the mold opening and closing ruler, specifically, according to the formula (1):
K＝X+Y/Z (1)
wherein: k is the actual mold closing low-pressure termination position; x is the actual position of a mold opening and closing ruler after mold opening and pressure relief of the injection molding machine in an automatic state are finished; y is a reference mold closing low-pressure termination position; and Z is the relevant coefficient of the tonnage of the machine. Specifically, Z is a coefficient determined according to different machine tonnages, specifically between 0.0 and 5.5, excluding end points.
In addition to the above embodiments, step S5 specifically includes:
and sending the target mold closing low-pressure end position to a driver, and controlling a mold locking oil cylinder to push the movable mold plate to a mold closing state by the driver.
In addition to the above embodiments, between step S4 and step S5, the method further includes:
step S4A: the actual position of the mold size and the actual mold closing low-voltage end position are sent to the human-computer interaction display, and data displayed on the human-computer interaction display can be conveniently checked by a worker.
In addition to the above embodiments, step S4A further includes:
the preset error value is input through the human-computer interaction display, namely the size of the preset error value can be input through the human-computer interaction display after being set according to needs, and of course, the preset error value can also be input into the controller through program editing.
It should be noted here that, a manual determining component may be disposed on the human-computer interaction display, and the human-computer interaction display may be configured to allow a worker to perform an operation according to experience, for example, when a distance between an actual mold closing low-pressure end position and a reference mold closing low-pressure end position is smaller than a preset error value, at this time, the controller may keep the reference mold closing low-pressure end position as a target mold closing low-pressure end position, but if a special situation occurs at this time and the actual mold closing low-pressure end position needs to be the target mold closing low-pressure end position, parameters of the controller may be manually adjusted by the manual determining component through the human-computer interaction display. Of course, the human-computer interaction display can also be used for other forms of human-computer interaction, and is not limited to the scheme provided in the embodiment.
The control method solves the problem that the mold closing position changes due to the fact that the mold expands when heated from the source, and enables the machine to automatically adjust parameters, so that production efficiency is improved, raw materials are saved, labor cost is saved, and training time is saved.
In addition to the above-mentioned mold closing control method for the direct-pressure injection molding machine, the present invention also provides a mold closing control system for the direct-pressure injection molding machine, as shown in fig. 2.
The direct-pressure injection molding machine mold closing control system comprises a movable mold plate 1, a fixed mold plate 2, a mold moving oil cylinder 3 for moving the movable mold plate 1, a mold locking oil cylinder 4 for controlling and locking the movable mold plate 1, a mold opening and closing ruler 5 for displaying the moving position of the movable mold plate 1 and a controller, wherein the controller is connected with the mold opening and closing ruler 5 and the mold locking oil cylinder 4;
the controller is used for: acquiring an actual voltage value of a switch die scale after die opening and pressure relief of the injection molding machine; calculating the actual position of the switch template according to the actual voltage value of the switch template; calculating the actual mold closing low-voltage termination position according to the actual position of the mold opening and closing ruler; judging whether the difference between the actual mold closing low-pressure termination position and the reference mold closing low-pressure termination position is larger than a preset error value, namely whether the distance between the actual mold closing low-pressure termination position and the reference mold closing low-pressure termination position is larger than the preset error value, if so, taking the actual mold closing low-pressure termination position as a target mold closing low-pressure termination position of the next mold, and if not, taking the reference mold closing low-pressure termination position as a target mold closing low-pressure termination position of the next mold; and controlling the injection molding machine to close the mold to a target mold closing low-pressure termination position.
It should be noted that, when the injection molding machine is opened for the first time, the reference closing low-pressure end position may be a preset closing low-pressure end position, and when the injection molding machine is not opened for the first time, the reference closing low-pressure end position is the determined closing low-pressure end position after the last opening of the mold.
This direct-pressure type injection molding machine die closing control system, through the connection of controller and switch mould chi 5 and mode locking hydro-cylinder 4, and through switch mould chi actual voltage value, calculate switch mould chi actual position, and through the comparative result between switch mould chi actual position and the reference mould closing low pressure termination point, select suitable position as target mould closing low pressure termination point, can effectively improve the accuracy of closing the mould, avoid the economic loss that the mould failure leads to, simultaneously, through automatic control, staff's intensity of labour can be reduced, manpower resources are saved.
On the basis of the above embodiments, the controller is configured to calculate the actual mold closing low-pressure termination position according to formula (1):
K＝X+Y/Z (1)
wherein: k is the actual mold closing low-pressure termination position; x is the actual position of a mold opening and closing ruler after mold opening and pressure relief of the injection molding machine in an automatic state are finished; y is a reference mold closing low-pressure termination position; and Z is the relevant coefficient of the tonnage of the machine. Specifically, Z is a coefficient determined according to different machine tonnages, specifically between 0.0 and 5.5, excluding end points.
On the basis of the above embodiments, the mold locking device further comprises a driver for controlling the mold locking oil cylinder 4 to move, and the controller is connected with the driver; the controller is further used for sending the target mold closing low-pressure end position to the driver, the driver controls the motor to operate, and the mold locking oil cylinder 4 is pushed to move the movable mold plate 1 to the mold closing state.
On the basis of the above embodiments, the system further comprises a human-computer interaction display, wherein the human-computer interaction display is used for a worker to input a preset error value; the controller is also used for starting the actual position of the mold-opening and mold-closing ruler and the actual mold-closing low-pressure termination position to the man-machine interaction display.
It should be noted here that, a manual determining component may be disposed on the human-computer interaction display, and the human-computer interaction display may be configured to allow a worker to perform an operation according to experience, for example, when a distance between an actual mold closing low-pressure end position and a reference mold closing low-pressure end position is smaller than a preset error value, at this time, the controller may keep the reference mold closing low-pressure end position as a target mold closing low-pressure end position, but if a special situation occurs at this time and the actual mold closing low-pressure end position needs to be the target mold closing low-pressure end position, parameters of the controller may be manually adjusted by the manual determining component through the human-computer interaction display. Of course, the human-computer interaction display can also be used for other forms of human-computer interaction, and is not limited to the scheme provided in the embodiment.
On the basis of the above embodiments, the controller may be connected to the switching module 5 through communication, specifically, may be connected to a CAN bus, and the switching module 5 sends its own voltage value to the controller, so as to achieve the acquisition of the actual voltage value of the switching module by the controller.
Specifically, when the machine enters production, the controller automatically monitors the position change of the expanded mold through the mold thickness adjusting system, acquires the actual voltage value of the mold closing rule after the mold opening and pressure relief are finished, converts the voltage value into the actual position of the mold closing rule through the controller, calculates the corresponding actual mold closing low-pressure end position, compares the calculated actual mold closing low-pressure end position with the reference mold closing low-pressure end position, and starts the mold thickness adjusting system if a large difference exists, namely, the actual mold closing low-pressure end position is used as the target mold closing low-pressure end position of the next mold. At the moment, the controller transmits the information to the driver, the driver controls the rotation of the motor, and then the movement of the mold locking oil cylinder 4 is controlled, the change of the low-pressure termination position of mold closing is realized, and therefore the machine can smoothly close the mold and produce.
In the process, a shunting worker can directly check the die opening position after pressure relief through a human-computer interface to obtain the actual position of the die opening and closing ruler 5 after die opening and pressure relief and the calculated actual die closing low-pressure end position. The mold closing control system for the injection molding machine provided by the embodiment can effectively avoid the problem of production interruption caused by mold closing failure, further improve the production efficiency and reduce the cost.
The method and the system for controlling the mold closing of the direct-pressure injection molding machine provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A direct-pressure injection molding machine mold closing control method is characterized by comprising the following steps:
step S1: acquiring an actual voltage value of a switch die scale after die opening and pressure relief of the injection molding machine;
step S2: calculating the actual position of the switch template according to the actual voltage value of the switch template;
step S3: calculating the actual mold closing low-voltage termination position according to the actual position of the mold opening and closing ruler;
step S4: judging whether the deviation value between the actual mold closing low-pressure termination position and the reference mold closing low-pressure termination position is larger than a preset error value, if so, taking the actual mold closing low-pressure termination position as a target mold closing low-pressure termination position of the next mold, and if not, taking the reference mold closing low-pressure termination position as a target mold closing low-pressure termination position of the next mold;
step S5: and controlling the injection molding machine to close the mold to the target mold closing low-pressure termination position.
2. The mold closing control method of a direct-pressure injection molding machine according to claim 1, wherein in step S3, the actual mold closing low-pressure end position is calculated according to the actual position of the mold opening and closing ruler, specifically, the actual mold closing low-pressure end position is calculated according to formula (1):
K＝X+Y/Z (1)
wherein: k is the actual mold closing low-pressure termination position; x is the actual position of a mold opening and closing ruler after mold opening and pressure relief of the injection molding machine in an automatic state are finished; y is a reference mold closing low-pressure termination position; and Z is the relevant coefficient of the tonnage of the machine.
3. The mold closing control method of the direct-pressure injection molding machine according to claim 1, wherein the step S5 is specifically:
and sending the target mold closing low-pressure end position to a driver, wherein the driver controls a motor to operate, and pushes a mold locking oil cylinder to move the movable mold plate to a mold closing state.
4. The direct-pressure injection molding machine mold closing control method according to any one of claims 1 to 3, characterized in that between step S4 and step S5, the method further comprises:
step S4A: and sending the actual position of the mold opening and closing ruler and the actual mold closing low-voltage termination position to a human-computer interaction display.
5. The mold closing control method of a direct-pressure injection molding machine according to claim 4, wherein in step S4A, the method further comprises:
and inputting the preset error value through the human-computer interaction display.
6. A direct-pressure injection molding machine mold closing control system is characterized by comprising a movable mold plate, a fixed mold plate, a mold moving oil cylinder for moving the movable mold plate, a mold locking oil cylinder for controlling and locking the movable mold plate, a mold opening and closing ruler for displaying the moving position of the movable mold plate and a controller, wherein the controller is connected with the mold opening and closing ruler and the mold locking oil cylinder;
the controller is configured to:
acquiring an actual voltage value of a switch die scale after die opening and pressure relief of the injection molding machine; calculating the actual position of the switch template according to the actual voltage value of the switch template; calculating the actual mold closing low-voltage termination position according to the actual position of the mold opening and closing ruler; judging whether the deviation value between the actual mold closing low-pressure termination position and the reference mold closing low-pressure termination position is larger than a preset error value, if so, taking the actual mold closing low-pressure termination position as a target mold closing low-pressure termination position of the next mold, and if not, taking the reference mold closing low-pressure termination position as a target mold closing low-pressure termination position of the next mold; and controlling the injection molding machine to close the mold to the target mold closing low-pressure termination position.
7. The direct-pressure injection molding machine mold closing control system according to claim 6, wherein the controller is configured to calculate the actual mold closing low-pressure end position according to equation (1):
K＝X+Y/Z (1)
wherein: k is the actual mold closing low-pressure termination position; x is the actual position of a mold opening and closing ruler after mold opening and pressure relief of the injection molding machine in an automatic state are finished; y is a reference mold closing low-pressure termination position; and Z is the relevant coefficient of the tonnage of the machine.
8. The direct-pressure injection molding machine mold closing control system according to claim 6, further comprising a driver for controlling the movement of the mold locking cylinder, wherein the controller is connected to the driver;
the controller is also used for sending the target mold closing low-pressure termination position to a driver.
9. The direct-pressure injection molding machine modeling control system of any one of claims 6 to 8, further comprising a human-computer interaction display for a worker to input the preset error value;
and the controller is also used for sending the actual position of the mold opening and closing ruler and the actual mold closing low-voltage termination position to a human-computer interaction display.
10. The direct-pressure injection molding machine mold closing control system according to claim 9, wherein the controller is connected to the switch mold ruler through a CAN bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710335715.6A CN108859036B (en) | 2017-05-11 | 2017-05-11 | Direct-pressure injection molding machine mold closing control method and system |
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| CN201710335715.6A CN108859036B (en) | 2017-05-11 | 2017-05-11 | Direct-pressure injection molding machine mold closing control method and system |
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| CN1640648A (en) * | 2003-12-25 | 2005-07-20 | 日精树脂工业株式会社 | Mold protection method for mold clamping apparatus |
| CN101398672A (en) * | 2007-09-26 | 2009-04-01 | 中国科学院自动化研究所 | Learning method for enhancing positioning accuracy of folding mould mechanism |
| CN101637965A (en) * | 2008-07-31 | 2010-02-03 | 鸿富锦精密工业（深圳）有限公司 | Mould-closing control system for injection molding machine and mould-closing control method |
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| CN1640648A (en) * | 2003-12-25 | 2005-07-20 | 日精树脂工业株式会社 | Mold protection method for mold clamping apparatus |
| CN101398672A (en) * | 2007-09-26 | 2009-04-01 | 中国科学院自动化研究所 | Learning method for enhancing positioning accuracy of folding mould mechanism |
| CN101637965A (en) * | 2008-07-31 | 2010-02-03 | 鸿富锦精密工业（深圳）有限公司 | Mould-closing control system for injection molding machine and mould-closing control method |
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