CN113320109A - Mold fault early warning system and method - Google Patents

Abstract

The invention relates to a mould fault early warning system and a mould fault early warning method, which comprise an ejector plate, an ejector rod and a pressure detection device for detecting ejection pressure and reset pressure of the ejector plate in the ejection and reset processes, wherein the pressure detection device is connected with a processor, the processor is connected with an alarm control module, the processor processes and analyzes pressure data detected by the pressure detection device and judges whether a fault alarm condition is met, and the alarm control module is triggered to act when the alarm condition is met. The invention can detect the fault of the mould in time, avoid causing the damage of the mould, facilitate the mould operating personnel and maintainer to master the fault condition of the mould and overhaul and maintain in time at the same time, improve the service life of the mould.

Description

Mold fault early warning system and method

Technical Field

The invention relates to a mold detection device, in particular to a mold fault early warning system and a mold fault early warning method.

Background

At present, an injection mold is widely applied to production of articles for daily use, electronic products and automobile decorating parts, and the quality of the running condition of the injection mold directly influences the quality and the working efficiency of an injection molding workpiece.

Most moulds only install travel switch at present stage for the motion position of monitoring liftout plate in production and trial-manufacture process, but then do not detect the pressure to each liftout point of liftout plate, consequently, whether balanced the pressure of each liftout point of liftout plate can not in time detect and obtain, can not in time report to the police and control the mould stop action when making the mould break down, cause the mould damage, the mould need frequently demolish the mould in process of production and overhaul, direct influence the life of mould and the quality of mould goods.

Disclosure of Invention

The invention mainly solves the technical problem of providing a mould fault early warning system which can acquire mould pressure information in time, can control the action of a mould in time when the pressure is abnormal, avoids the damage to the mould and prolongs the service life of the mould, and also provides a mould fault early warning method.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides a mould trouble early warning system, includes liftout plate and ejector pin, still includes the pressure measurement device who is used for detecting liftout plate ejecting pressure and the pressure that resets at ejecting and the in-process that resets, pressure measurement device is connected with the treater, the treater is connected with alarm control module, the treater carries out processing analysis and judges whether satisfy the malfunction alerting condition to the pressure data that pressure measurement device detected, triggers alarm control module action when satisfying the malfunction alerting condition.

Further, the pressure detection device is arranged at one or more ejection point positions which are contacted with the ejection plate when the ejector rod is ejected, and the ejector rod is contacted with the pressure detection device and detects the ejection pressure and the reset pressure when ejected;

or the pressure detection device is arranged in an oil path of the mold ejection mechanism and used for detecting the oil pressure of the oil path in the ejection and reset processes, and the processor calculates the ejection pressure and the reset pressure according to the detected oil pressure.

Further, the alarm control module comprises an alarm and/or a control module, the alarm is used for giving an alarm, and the control module is used for controlling the die to stop acting.

Further, a standard ejection pressure Pds and a standard reset pressure Pfs are prestored in the processor, and if the ejection pressure Pd and the reset pressure Pf detected by the pressure detection device exceed the ranges of the standard ejection pressure Pds + -. DELTA Pd and the standard reset pressure Pfs + -. DELTA Pf, the alarm condition is judged to be met;

and/or, a standard pressure difference deltaPs between a plurality of ejecting points is prestored in the processor, and if the difference value between the ejecting pressure Pd and the reset pressure Pf of each ejecting point detected by the pressure detection device exceeds the range of the standard pressure difference deltaPs, the alarm condition is judged to be reached.

Further, the standard ejection pressure Pds and the standard reset pressure Pfs are one or more, and are standard pressure values corresponding to one or more set time points in the ejection process and the reset process;

or, the standard ejection pressure Pds and the standard return pressure Pfs are a pressure-time curve of the ejection pressure with time and a pressure-time curve of the return pressure with time.

Further, the processor is connected with a display and/or a cloud end and used for displaying ejection pressure Pd and reset pressure Pf of an ejector rod of the pressure detection device during ejection and reset in real time.

The other technical scheme of the invention is as follows:

a mold fault early warning method comprises the following steps:

detecting ejection pressure Pd and reset pressure Pf of the ejection plate in the ejection and reset processes by using a pressure detection device;

the processor receives the detected ejection pressure Pd and the detected reset pressure Pf, compares the detected ejection pressure Pd and the detected reset pressure Pf with a standard ejection pressure Pds and a standard reset pressure Pfs prestored in the processor, and judges whether an alarm condition is met;

and triggering the alarm control module to act when the alarm condition is reached.

Further, the action of the alarm control module comprises alarm and/or control of the stopping action of the mould.

Further, a standard ejection pressure Pds and a standard reset pressure Pfs are prestored in the processor, and the ejection pressure Pd and the reset pressure Pf detected by the pressure detection means are judged to reach an alarm condition if they exceed the ranges of the standard ejection pressure Pds ± Δ Pd and the standard reset pressure Pfs ± Δ Pf.

Further, the standard ejection pressure Pds and the standard reset pressure Pfs are obtained by detecting standard pressure values corresponding to one or more set time points of the ejection plate in the ejection process and the reset process when the mold normally operates;

or the standard ejection pressure Pds and the standard reset pressure Pfs are pressure-time curves of the ejection pressure changing along with the time and pressure-time curves of the reset pressure changing along with the time, which are obtained by recording pressure changing along with the time in the ejection process and the reset process of the ejector rod when the mold normally runs.

In summary, according to the die fault early warning system and method provided by the invention, the ejection pressure and the reset pressure of each ejection point can be directly detected in real time through the pressure detection device, and when the ejection pressure and the reset pressure are abnormal, an alarm can be given in time to control the die to stop operating, so that the die damage is avoided, meanwhile, the die operator and the maintainer can conveniently master the specific conditions of the die, the die is better maintained and used, and the service life of the die is prolonged.

Drawings

FIG. 1 is a block diagram of the fault warning system of the present invention;

FIG. 2 is a schematic view of the mold of the present invention;

fig. 3 is a view showing the construction of the pressure sensor mounting of the present invention.

As shown in fig. 1 to 3, the ejection plate 1, the ejector rod 2, the bottom plate 3, the movable die plate 4, the return spring 5, the pressure detection device 6, the pressure sensor 6a, the processor 7, the alarm control module 8, the display 9, the cloud 10, the alarm 11, the control module 12, the ejection point 13, and the screw 14.

Detailed Description

The invention is described in further detail below with reference to the following detailed description and accompanying drawings:

the first embodiment is as follows:

as shown in fig. 1, the present invention provides a mold failure early warning system, wherein a mold comprises an ejector plate 1, ejector rods 2, a bottom plate 3, a movable mold plate 4, and a fixed mold plate (not shown). Wherein, the liftout plate 1 is installed on the movable mould board 4, and installs the reset spring 5 that the liftout plate 1 resets between liftout plate 1 and movable mould board 4, and the one end of ejector pin 2 is connected on the fixed mould board. When the ejector plate 1 needs to be ejected to take out a product after injection molding is finished, the ejector rod 1 is controlled to extend out, the ejector plate 1 is ejected to move to one side, after the product is taken out, the ejecting force of the ejector rod 2 is cancelled, and the ejector plate 1 moves back under the action of the reset spring 5 to realize reset.

As shown in fig. 2, the mold fault early warning system further includes a pressure detection device 6, a processor 7, an alarm control module 8 and a display 9. The display 9 is used for displaying pressure detection data in real time, so that an operator can know the running state of the mold in real time. The processor 7 can also be connected with the cloud end 10, the operation condition in the production process of the die is displayed through the cloud end 10, the data transmitted by the processor 7 is displayed, the operation condition of the die can be remotely known by an operator in real time, and the die can be maintained and maintained in time.

The pressure detection device 6 is used for detecting ejection pressure and reset pressure of the ejection plate 1 in the ejection and reset processes, the pressure detection device 6 is connected with the processor 7, the processor 7 is connected with the alarm control module 8, the processor 7 processes and analyzes pressure data detected by the pressure detection device 6 and judges whether alarm conditions are met, and the alarm control module 8 is triggered to act when the alarm conditions are met. The alarm control module 8 comprises an alarm 11 and/or a control module 12, the alarm 11 is used for giving an alarm, can give an alarm by sound, can give an alarm by an indicator light, and can also directly display alarm information on the display 9, and the control module 12 is used for controlling the die to stop acting so as to avoid the die from being damaged.

In the present embodiment, as shown in fig. 1 and fig. 2, the pressure detecting device 6 employs a pressure sensor 6a, and the point where the ejector rod 2 contacts the ejector plate 1 during ejection is an ejection point 13, in the present embodiment, four ejector rods 2 are mounted on the mold as an example, four ejection points 13 are correspondingly mounted on the ejector plate 1, and one pressure sensor 6a is mounted at each ejection point 13. As shown in fig. 3, the pressure sensor 6a is fixed to the knock-out plate 1 by screws 14.

The ejector rod 2 is in direct contact with the corresponding pressure sensor 6a during ejection, and the pressure sensor 6a detects the ejection pressure at the ejection point 13. During the resetting, the pressure sensor 6a of each ejection point 13 is still connected to the corresponding ejector rod 2 due to the action of the return spring 5, and the pressure sensor 6a detects the resetting pressure of the ejection point 13. The detected ejection pressure and return pressure are displayed in real time on the display 9 or the cloud 10.

The method comprises the steps that standard ejection pressure Pds and standard reset pressure Pfs are prestored in a processor 7, the position of each ejection point 13 is provided with the standard ejection pressure Pds and the standard reset pressure Pfs which belong to the position of the ejection point 13, the pressure sensor 6a of each ejection point 13 sends the detected ejection pressure Pd and the detected reset pressure Pf to the processor 7, the processor 7 compares actual pressure values detected by each ejection point 13 with the prestored standard pressure values of the ejection points 13, if the actual pressure values exceed the ranges of the standard ejection pressure Pds +/-Delta Pd and the standard reset pressure Pfs +/-Delta Pf, the alarm condition is judged to be reached, the fact that the mold has a fault is proved, the mold needs to be overhauled, an alarm control module 8 is triggered by the processor 7 to send alarm information, the mold is controlled to stop operating, and meanwhile, abnormal information is recorded by the processor 10.

In this embodiment, the standard ejection pressure Pds and the standard reset pressure Pfs are obtained by detecting pressure information during the ejection and reset of the mold when the mold is in normal operation. Preferably, the standard ejection pressure Pds and the standard reset pressure Pfs are pressure-time curves, i.e., a pressure-time curve of the ejection pressure with time and a pressure-time curve of the reset pressure with time, which are stored in the processor 7 as standards. In the actual production process, the curves of the actually detected pressure changes along with the time in the ejection process and the resetting process are compared with the corresponding standard pressure curves. Of course, the standard ejection pressure Pds and the standard reset pressure Pfs may be pressure values at one or several fixed time points, which are stored in the processor 7 as a standard. During the actual production process, the actual detected pressure value at one or more selected fixed time points is compared with the corresponding standard pressure value.

When the mold works normally, the ejection pressure and the reset pressure at the four ejection points 13 are balanced, when the mold breaks down, all the vertexes 13 may be abnormal, or one or more of the vertexes 13 may be abnormal, the pressure sensors 6a are installed at the positions of the four ejection points 13 to respectively detect the ejection pressure and the reset pressure at each ejection point 13 and respectively judge the pressure at the positions of the four ejection points 13, whether the ejection pressures are balanced is found through comparison, and if the ejection pressures are unbalanced, the action is stopped in time and a worker is reminded to maintain in time. The intelligent detection device is favorable for more comprehensively detecting the faults of the die, can give an alarm in time no matter what kind of faults occur to the die, and is convenient for die operators and maintainers to master the specific conditions of the die and maintain and use the die better.

The invention also discloses a mould fault early warning method.

The ejection process comprises the following steps:

A. the four ejector rods 2 extend outwards to be in contact with four corresponding pressure sensors 6a on the ejector plate 1 respectively, and the four pressure sensors 6a detect ejection pressures Pd of the ejection points 13 in the ejection process respectively.

B. The processor 7 receives the detected ejection pressure Pd, compares the detected ejection pressure Pd with a pressure-time curve of the standard ejection pressure Pds prestored in the processor 7 along with the change of time, and judges that an alarm condition is reached when the actual detected value exceeds the range of the standard ejection pressure Pds plus or minus delta Pd, namely, the mould is determined to have a fault at the moment.

C. After the alarm condition is met, the alarm control module 8 is triggered to act, the alarm 11 is controlled to give an alarm, related personnel are informed of timely maintenance, the control module 12 is used for controlling the die to stop acting, the die is prevented from being damaged, and meanwhile the cloud 10 records abnormal information.

The reset process comprises the following steps:

A. when the ejection process is finished and reset is started, the four pressure sensors 6a still contact the ejector rod 2 under the action of the reset spring 5, and the four pressure sensors 6a respectively detect reset pressures Pf at the positions of the four ejection points 13.

B. The processor 7 receives the detected reset pressure Pf, compares the detected reset pressure Pf with a pressure-time curve of the standard reset pressure Pfs changing with time, which is prestored in the processor 7, and determines that the alarm condition is reached when the actual detected value exceeds the range of the standard ejection pressure Pfs +/- Δ Pf.

C. After the alarm condition is met, the alarm control module 8 is triggered to act, the alarm 11 is controlled to give an alarm, related personnel are informed of timely maintenance, the control module 12 is used for controlling the die to stop acting, the die is prevented from being damaged, and meanwhile the cloud 10 records abnormal information.

The ejection pressure Pd and the reset pressure Pf of each ejection point 13 can be directly detected in real time through the pressure detection device 6, and when the ejection pressure Pd and the reset pressure Pf are abnormal, an alarm can be given in time to control the die to stop operating, so that the die damage is avoided, meanwhile, the die operating personnel and the maintenance personnel can conveniently master the specific conditions of the die, the die is better maintained and used, and the service life of the die is prolonged.

Example two:

the difference from the first embodiment is that the pressure detection device 6 is installed in an oil path of the mold ejection mechanism and used for detecting oil pressure of the oil path in the ejection and reset processes of the ejector rod 2, the processor 7 calculates the ejection pressure Pd and the reset pressure Pf of each ejection point 13 according to the detected oil pressure, the processor 7 compares actual pressure values detected by each ejection point 13 with pre-stored standard pressure values of the ejection point 13, if the actual pressure values exceed the ranges of the standard ejection pressure Pds +/- Δ Pd and the standard reset pressure Pfs +/- Δ Pf, it is determined that alarm conditions are met, it is proved that the mold has a fault and needs to be repaired, the processor 7 triggers the alarm control module 8 to send alarm information and control the mold to stop operating, and the cloud 10 records abnormal information.

When the mold normally works, the oil pressure in the ejection mechanism is detected, the calculated ejection pressure Pd and the calculated reset pressure Pf are used as the standard ejection pressure Pds and the standard reset pressure Pfs, and a standard pressure curve of the ejection pressure and the reset pressure along with the change of time is drawn according to the standard ejection pressure Pds and the standard reset pressure Pfs.

Example three:

a difference from the first embodiment is that a standard pressure difference Δ Ps between the four ejection points 13 is pre-stored in the processor 7, and Δ Ps may be equal to 0 or may be a value greater than 0. When the mold is in normal operation, the pressures between the four ejection points 13 should be equal, that is, Δ Ps is equal to 0, and the difference between the ejection pressure Pd and the reset pressure Pf of each ejection point detected by the pressure detection device exceeds the range of the standard pressure difference Δ Ps, that is, the pressures between the four ejection points 13 are not balanced any more, and even exceeds the range of the allowable standard pressure difference Δ Ps, that is, it is determined that the alarm condition is reached.

Similar solutions can be derived from the solution given in the figures, as described above. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims (10)

1. The utility model provides a mould trouble early warning system, includes ejector plate and ejector pin, its characterized in that: the pressure detection device is used for detecting ejection pressure and reset pressure of the ejection plate in the ejection and reset processes, the pressure detection device is connected with the processor, the processor is connected with the alarm control module, the processor processes and analyzes pressure data detected by the pressure detection device and judges whether fault alarm conditions are met, and the alarm control module is triggered to act when the alarm conditions are met.

2. The mold fault warning system according to claim 1, wherein: the pressure detection device is arranged at one or more ejection point positions which are contacted with the ejection plate when the ejector rod is ejected, and the ejector rod is contacted with the pressure detection device and detects the ejection pressure and the reset pressure when the ejector rod is ejected;

or the pressure detection device is arranged in one or more oil passages of the mold ejection mechanism and used for detecting the oil pressure of the oil passages in the ejection and reset processes, and the processor calculates the ejection pressure and the reset pressure according to the detected oil pressure.

3. The mold fault warning system according to claim 1, wherein: the alarm control module comprises an alarm and/or a control module, the alarm is used for giving an alarm, and the control module is used for controlling the die to stop acting.

4. The mold fault warning system according to claim 1, wherein: a standard ejection pressure Pds and a standard reset pressure Pfs for each ejection point are prestored in the processor, and if the ejection pressure Pd and the reset pressure Pf detected by the pressure detection device exceed the ranges of the standard ejection pressure Pds + -. DELTA Pd and the standard reset pressure Pfs + -. DELTA Pf, the processor determines that an alarm condition is met;

and/or, a standard pressure difference deltaPs between a plurality of ejecting points is prestored in the processor, and if the difference value between the ejecting pressure Pd and the reset pressure Pf of each ejecting point detected by the pressure detection device exceeds the range of the standard pressure difference deltaPs, the alarm condition is judged to be reached.

5. The mold fault warning system according to claim 4, wherein: the standard ejection pressure Pds and the standard reset pressure Pfs are one or more and are standard pressure values corresponding to one or more set time points in the ejection process and the reset process;

or, the standard ejection pressure Pds and the standard return pressure Pfs are a pressure-time curve of the ejection pressure with time and a pressure-time curve of the return pressure with time.

6. The mold fault warning system according to claim 1, wherein: the processor is connected with a display and/or a cloud end and is used for displaying ejection pressure Pd and reset pressure Pf of an ejector rod of the pressure detection device in real time during ejection and reset.

7. A mould fault early warning method is characterized by comprising the following steps:

detecting ejection pressure Pd and reset pressure Pf of one or more ejection points in the ejection plate in the ejection and reset processes by using a pressure detection device;

the processor receives the detected ejection pressure Pd and the reset pressure Pf, compares the detected ejection pressure Pd and the detected reset pressure Pf with the standard ejection pressure Pds and the standard reset pressure Pfs of the corresponding ejection point prestored in the processor, and judges whether an alarm condition is met;

and triggering the alarm control module to act when the alarm condition is reached.

8. The mold fault early warning method according to claim 7, characterized in that: the action of the alarm control module comprises alarm and/or control of the stopping action of the mould.

9. The mold fault early warning method according to claim 7, characterized in that: the processor is pre-stored with a standard ejection pressure Pds and a standard reset pressure Pfs, and if the ejection pressure Pd and the reset pressure Pf detected by the pressure detection device exceed the ranges of the standard ejection pressure Pds + -. DELTA Pd and the standard reset pressure Pfs + -. DELTA Pf, the processor judges that an alarm condition is reached.

10. The mold fault early warning method according to claim 7, characterized in that: the standard ejection pressure Pds and the standard reset pressure Pfs are obtained by detecting standard pressure values corresponding to one or more set time points of the ejection plate in the ejection process and the reset process when the mold normally runs;

or the standard ejection pressure Pds and the standard reset pressure Pfs are pressure-time curves of the ejection pressure changing along with the time and pressure-time curves of the reset pressure changing along with the time, which are obtained by recording pressure changing along with the time in the ejection process and the reset process of the ejector rod when the mold normally runs.

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