KR20220023218A - Apparatus and method using this - Google Patents

Abstract

The present invention relates to a device for measuring shape-engagement of a press, which comprises: a load measurement plate supporting an upper mold formed to form a material by press compression on the material and a lower mold of which a shape is engaged with a shape of the upper mold and having a plurality of measurement sensors which measures load and is formed inside the load measurement plate; and a control unit determining an abnormal portion through load for each portion of the lower mold measured by the plurality of measurement sensors.

Description

Press-type measuring device and measuring method {Apparatus and method using this}

The present invention relates to a press-form measuring apparatus and a measuring method, and more particularly, to a press-forming measuring apparatus and measuring method capable of measuring a pressure distribution during press forming.

Die spotting refers to mounting the upper and lower molds on the press in the press mold, applying the light end (injug) to the surface of the mold, and then molding the panel to check whether the light end is evenly distributed and buried on the molded product surface. It refers to work and is an essential part of the mold development process.

In press-formed parts, due to the increase in material strength, the press load required during press forming is greatly increased, local stress increases due to the difference in sheet thickness, elastic deformation of the ram and bed, etc. occurring during forming, and the press itself Mismatching occurs due to displacement, etc.

Therefore, at present, mold manufacturing companies perform a mold test, and if the pressing force of the mold is non-uniform, skilled workers perform grinding or re-machining, and most press mold manufacturers check the mold during development And it goes through the process of repeatedly performing the correction operation.

Conventionally, when developing a mold, a mold matching test is performed after the final processing of the mold. In this test, a light edge is applied to the mold and the upper and lower molds are matched to visually check the state of the light edge for each part to analyze and experience the uniformity of the mold pressing force. Many skilled workers proceeded to correct the cause of the non-uniformity of the pressing force through repeated finishing.

However, this process causes problems in which it is difficult to transfer technology depending on the mold delivery delay problem, the mold development cost increase problem, and the experience of skilled manpower.

The present invention is to solve various problems including the above problems, and it is possible to increase the competitiveness of mold manufacturers by shortening the mold development period and reducing costs by converting them into data through a quantitative measurement method of pressure using a load sensor. An object of the present invention is to provide a press-type measuring device and a measuring method. However, these problems are exemplary, and the scope of the present invention is not limited thereto.

According to one embodiment of the present invention, a press-type measuring apparatus is provided. The press-fitting measuring device includes: a load measuring plate in which a plurality of measuring sensors for measuring a load are formed therein, supporting an upper mold formed so as to be able to press and molding a material and a lower mold to be molded into the upper mold; and a control unit configured to determine an abnormal portion through the load for each portion of the lower mold measured by the plurality of measurement sensors.

According to an embodiment of the present invention, the plurality of measurement sensors may be formed on an upper portion of the load measurement plate, and each of the plurality of measurement sensors may be spaced apart from each other by a predetermined distance to form a matrix structure having rows and columns. .

According to an embodiment of the present invention, the control unit may include: a collection unit configured to store sensor data measured at each node in which the plurality of measurement sensors are located; an error sensor node check unit for detecting a location of an error sensor node in which an abnormality has occurred among the plurality of measurement sensors; a cluster configuration unit for configuring the error sensor node and neighboring nodes of the error sensor node as a node cluster; a data calculation unit for determining an error value of the error sensor node; and a data display unit that converts the error value into data as a non-uniformity of the lower mold and the upper mold and displays the data.

According to an embodiment of the present invention, the data calculation unit includes: a weight calculation unit for calculating a load weight according to a distance and a direction from each of the neighboring nodes formed around the error sensor node; a predicted value calculator for predicting a predicted value of the error sensor node by applying the load weight calculated by the weight calculator to the error sensor node; and a similarity calculator for deriving an actual value of the error sensor node by searching for a cluster similar to the node cluster and matching a reference value.

According to an embodiment of the present invention, the method may further include a comparison unit that compares the predicted value of the error sensor node predicted by the prediction value calculator with the actual value derived from the similarity calculator.

According to an embodiment of the present invention, a vibration measuring unit for measuring the vibration of the lower mold so as to analyze the presence or absence of abnormality when the upper mold and the lower mold are combined.

According to an embodiment of the present invention, the lower mold may further include a lower support roller formed on the load measuring plate so that the lower mold can move from the upper portion of the load measuring plate to be aligned in a fixed position.

According to an embodiment of the present invention, mold clamps formed on both sides of the lower mold to fix the lower mold; may further include.

According to an embodiment of the present invention, there is provided a press-type measuring method. The press mold measurement method includes: a molding step in which an upper mold and a lower mold formed to be molded by press-pressing a material are combined; a load measuring step of measuring a load value over time through a plurality of measuring sensors formed inside the load measuring plate supporting the lower mold; a data collection step of storing sensor data measured at each node in which the plurality of measurement sensors are located; an error sensor node checking step of detecting a location of an error sensor node in which an abnormality has occurred among the plurality of measurement sensors; a cluster configuration step of configuring the error sensor node and neighboring nodes of the error sensor node as a node cluster; a data calculation step of determining an error value of the error sensor node; a data display step of converting the error value into data as a non-uniformity degree of the lower mold and the upper mold; and a machining part calculation step of calculating at least a portion of the upper mold and the lower mold as a machining part through the degree of non-uniformity.

According to an embodiment of the present invention, the data calculation step includes: a weight calculation step of calculating a load weight according to a distance and a direction from each of the neighboring nodes formed around the error sensor node; a predicted value calculation step of predicting a predicted value of the error sensor node by applying the load weight calculated in the weight calculation step to the error sensor node; and a similarity calculation step of deriving an actual value of the error sensor node by searching for a similar cluster matching the node cluster and a reference value.

According to an embodiment of the present invention, the method may further include a comparison step of comparing the predicted value of the error sensor node predicted in the predicted value calculation step with the actual value derived in the similarity calculation step.

According to an embodiment of the present invention, if the predicted value and the actual value calculated in the comparison step are larger than the user-specified value, configure a second node cluster larger than the note cluster configured in the cluster configuration step and perform the subsequent steps Iteratively, when the predicted value and the actual value calculated in the comparison step are smaller than the user-specified value, it may be determined as the error value.

According to an embodiment of the present invention made as described above, by attaching sensors to the lower die side of the mold, and analyzing the load result value for each part when confirming the shape, the work that relied on the existing skill level is combined with digital technology to provide quantitative numerical data. and visualization data can be secured. Accordingly, it is possible to visualize the finishing area and the finishing processing amount, and it can have the effect of enhancing competitiveness through time saving, fast delivery schedule and quality assurance.

In addition, during mass-production tests, problems such as mold deformation, press guide ram deformation, cushion die deformation, and cushion pressure change that may occur due to changes in site conditions over time are recognized in advance through load sensors and vibration sensors to preserve facilities , it is possible to implement a press mold measuring device and measuring method having the effect of preventing quality defects through maintenance of molds, etc. Of course, the scope of the present invention is not limited by these effects.

1 is a view showing a press-type measuring apparatus according to an embodiment of the present invention.
Figure 2 is a partial view showing that the lower mold of the press mold measuring apparatus according to an embodiment of the present invention is coupled.
Figure 3 is a view showing a control unit of the press-type measuring apparatus according to an embodiment of the present invention.
4 is a view showing a part of the control unit of the press-type measuring apparatus according to an embodiment of the present invention.
5 is a flowchart illustrating a press-type measuring method according to an embodiment of the present invention.
6 is a flowchart specifically showing the press-type measuring method of the present invention.
7 and 8 are diagrams illustrating an error sensor node cluster including an error sensor node according to the present invention.
9 is a flowchart showing an example of a press-type measuring method according to an embodiment of the present invention.
10 and 11 are views showing a method in which the press-type measuring apparatus of the present invention is installed.

Hereinafter, several preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Examples of the present invention are provided to more completely explain the present invention to those of ordinary skill in the art, and the following examples may be modified in various other forms, and the scope of the present invention is as follows It is not limited to an Example. Rather, these embodiments are provided so as to more fully and complete the present disclosure, and to fully convey the spirit of the present invention to those skilled in the art. In addition, in the drawings, the thickness or size of each layer is exaggerated for convenience and clarity of description.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings schematically illustrating ideal embodiments of the present invention. In the drawings, variations of the illustrated shape can be envisaged, for example depending on manufacturing technology and/or tolerances. Accordingly, embodiments of the spirit of the present invention should not be construed as limited to the specific shape of the region shown in the present specification, but should include, for example, changes in shape caused by manufacturing.

1 is a view showing a press-mold measuring apparatus according to an embodiment of the present invention, and FIG. 2 is a partial view showing that the lower mold of FIG. 1 is coupled.

First, the press-type measuring apparatus according to an embodiment of the present invention may include a load measuring plate 300 and a control unit 500 .

The load measuring plate 300 may be formed to support the upper mold 100 formed to be molded by pressing the material S and the lower mold 200 to be molded into the upper mold 100 .

At this time, the upper mold 100 is formed to press the material S from the upper portion so that the material S can be press-molded, and the upper mold 100 is a press ram (R) from the lower portion of the press ram (R). It may be formed to be fixed to.

The lower mold 200 may be formed in a shape corresponding to the upper mold 100 to be molded into the upper mold 100 .

As the press ram (R) descends, the upper mold 100 is pressed with a static pressure toward the upper part of the lower mold 100, and accordingly, the material S is formed in the upper mold 100 and the lower mold 200. It may be introduced into the shape and deformed to have a predetermined shape.

The lower mold 200 may be formed such that the lower mold 200 is supported on the top of the press bed B having a flat upper surface.

A load measuring plate 300 on which a sensor for measuring the pressure applied to the lower mold 200 is installed may be formed between the lower mold 200 and the press bed B.

In addition, the load measuring plate 300 may have a plurality of measuring sensors 400 for measuring a load therein.

A plurality of measurement sensors 400 are formed on the upper portion of the load measurement plate 300, or are formed inside the load measurement plate 300 to be applied to the lower mold 200 seated on the load measurement plate 300 load can be measured.

Specifically, the plurality of measurement sensors 400 are the self-weight of the lower mold 100 at the position where each sensor is formed, the self-weight of the upper mold 200, the pressing force and the load cell of the press ram (R), and the load measuring plate. The repulsive force of 300 and the pressure of the mold clamp, which will be described later, can be measured.

The plurality of measurement sensors 400 may be formed in a matrix structure having rows and columns spaced apart from each other by a predetermined distance.

For example, as shown in FIGS. 7 and 8 , the plurality of measurement sensors 400 have a predetermined distance in the horizontal direction to the 1-1th sensor, the 1-2th sensor, the 1-3th sensor, and the 1-nth sensor. Formed to be spaced apart, the 1-1 sensor, the 2-1 sensor, the 3-1 sensor, and the n-1 sensor are formed to be spaced apart by the predetermined distance in the longitudinal direction, in all areas of the lower mold 200 . Each pressure value according to the predetermined distance may be measured.

In this case, data of respective measurement values measured by the plurality of measurement sensors 400 may be stored in the controller 500 .

FIG. 3 is a view showing the control unit 500 of the press-type measuring apparatus according to an embodiment of the present invention, and FIG. 4 is a view showing the data calculation unit 540 formed in the control unit 500 .

The control unit 500 may determine the abnormal part through the load for each part of the lower mold 200 measured by the plurality of measurement sensors 400 .

3 , the control unit 500 includes a collection unit 510 , an error sensor node check unit 520 , a cluster configuration unit 530 , a data calculation unit 540 , a data display unit 550 , and a comparison unit. 560 may be included.

The collection unit 510 may store sensor data measured at each node in which the plurality of measurement sensors 400 are located. As described above, each measurement value measured by the plurality of measurement sensors 400 may be converted into data and stored in the collection unit 510 through the controller 500 connected to the plurality of measurement sensors 400 . In this case, the collection unit 510 may store location information and measurement value information of the plurality of measurement sensors 400 .

The error sensor node check unit 520 may detect the location of the error sensor node ER in which an error occurs among the plurality of measurement sensors 400 .

The error sensor node check unit 520 may determine an abnormal value among the values measured by the plurality of measurement sensors 400, detect the position of the sensor in which the abnormal value is detected, and determine the error sensor node ER. .

The error sensor node ER may be any one of a plurality of measurement sensors 400 formed on the load measuring plate 300, and the abnormal value is detected at various locations to generate a plurality of error sensor nodes ER there is.

For example, as shown in FIG. 7 , the 2-2 sensor may be determined as an abnormal value in the error sensor node check unit 520 and the 2-2 sensor may be determined as the error sensor node ER.

The cluster configuration unit 530 may configure the error sensor node ER and neighboring nodes of the error sensor node ER as a node cluster NC.

The cluster configuration unit 530 may designate, as the node cluster NC, a peripheral area of the sensor determined as the error sensor node ER by being identified as the abnormal value by the error sensor node checking unit 520 .

For example, as shown in FIG. 7 , the 1-1 sensor and the 1- The second sensor, the 3-1 sensor, the 1-2 sensor, the 3-2 sensor, the 1-3 sensor, the 2-3 sensor, and the 3-3 sensor may be designated as the first node cluster NC1. .

The data calculator 540 may determine an error value of the error sensor node ER.

Specifically, the data calculation unit 540 calculates and compares the difference between the measured load and the actual load of the error sensor node ER, determines the error value of the error sensor node ER as the non-uniformity, and the non-uniformity data Based on , it can be calculated so that the user can process at least a portion of the upper mold 100 and the lower mold 200 .

As shown in FIG. 4 , the data calculator 540 may include a weight calculator 541 , a predicted value calculator 542 , and a similarity calculator 543 .

The weight calculator 541 may calculate a load weight according to a distance and a direction from each of the neighboring nodes formed around the error sensor node ER.

The load measured by the plurality of measurement sensors 400 may be measured differently at all positions by the lower mold 100 and the upper mold 200, the pressing force of the press ram R, etc. having different self weight or pressure for each location. . That is, the loads measured by the plurality of measurement sensors 400 may have different weights for each location.

Accordingly, the weight calculation unit 541 may calculate different load weights for each location according to the loads measured by the plurality of measurement sensors 400 , and in particular, may calculate the load weights of the error sensor node ER.

The predicted value calculator 542 may predict the predicted value of the error sensor node ER by applying the load weight calculated by the weight calculator 541 to the error sensor node ER.

The predicted value calculator 542 may estimate an actual load of a node in which each sensor is actually located as a predicted value by applying a load weight from the loads measured by the plurality of measurement sensors 400 . In particular, it is possible to calculate the load weight to the load of the error sensor node (ER) and predict it as a predicted value.

The similarity calculator 543 may derive the actual value of the error sensor node ER by searching for the node cluster NC and the similar cluster meeting the reference value.

The similarity calculator 543 searches for a similar node cluster (NC) and designates it as a similar cluster at the time of consolidation of different rounds or consolidation of different molds, and a node at a position similar to the position of the error sensor node (ER) in the similar cluster. Alternatively, the actual value of the node at the same location may be derived.

The comparison unit 560 calculates a load weight to the measured load of the error sensor node (ER), and when the predicted predicted value and the other rounds are combined or when different molds are combined, the error sensor node (ER) in the similar node cluster (NC) It is possible to compare the actual value of a node with a similar position to the position of , or a node with the same position.

In this case, the comparison unit 560 may include a determination unit in which the threshold value is stored.

When the difference between the predicted value and the actual value compared by the comparison unit 560 is greater than the threshold value, the determination unit may transmit data to the cluster configuration unit 530 to reconstruct the node cluster NC.

Also, when the difference between the predicted value and the actual value compared in the comparison unit 560 is less than or equal to the threshold value, data may be transmitted to the data display unit 550 to be described later.

In this case, the threshold value may include an average deviation derived from data that has been repeatedly combined or performed in another mold, or an input deviation previously input by a user, the average deviation and the input By storing all the deviations, a threshold value may be derived as an average value.

The data display unit 550 may display the error values as data as non-uniformities between the lower mold 200 and the upper mold 100 .

The data display unit 550 may display the non-uniformity of the mold calculated through the load history diagram for each part of the lower mold 200 in the form of a graph or a load distribution diagram.

That is, the data display unit 550 may display non-uniformity data such as a graph or a distribution map, and accordingly, the user may determine the amount of finishing based on the non-uniformity data.

As shown in FIGS. 1 and 2 , the press-form measuring apparatus according to an embodiment of the present invention further includes at least one or more of a vibration measuring unit 600 , a lower support roller 700 , and a mold clamp 800 . can do.

1 and 2, the lower support roller 700 is located below the lower mold 200 so that the lower mold 200 can move from the upper part of the load measuring plate 300 to be aligned in place. can be formed.

The lower support roller 700 may be provided with an elevating unit 710 for elevating the lower support roller 700 by pneumatic or hydraulic pressure in order to mount the lower mold 200 .

The lifting unit 710 raises the lower support roller 700 so that the lower mold 200 can move to the upper part of the load measuring plate 300, and lowers the lower mold 200 again after transport and alignment are completed. .

1 and 2 , the mold clamp 800 may be formed on both sides of the lower mold 200 to fix the lower mold 200 .

The mold clamp 800 presses and fixes the load measuring plate 300 from the outer upper part of the load measuring plate 300, and the lower mold ( 200) can be fixed.

In the mold clamp 800 , a buffer part 810 may be formed in at least a portion of a portion in contact with the lower mold 200 . That is, the load measuring plate 300 is fixed with the mold clamp 800 to which the buffer part 810 is attached, and the lower mold 200 is in close contact with the buffer part 810 .

1 and 2, the vibration measuring unit 600 can measure the vibration of the lower mold 200 so as to analyze the presence or absence of abnormality when the upper mold 100 and the lower mold 200 are combined. there is.

The presence or absence of abnormality in the mold or press can be analyzed through the vibration sensor formed in the vibration measuring unit 600 . For example, when the upper mold 100 and the lower mold 200 are molded, the vibration measuring unit 600 operates in at least one of the press bed B, the load measuring plate 300 and the lower mold 200 . The generated vibration may be sensed, and the control unit 500 may determine whether there is an abnormality due to the vibration by comparing it with the vibration at the time of mixing in other rounds or in the mixing of other molds.

5 and 6 are flowcharts showing a press-type measuring method according to an embodiment of the present invention, Figure 9 is a flow chart showing an example of a press-type measuring method, Figures 10 and 11 is a press-form measuring device is installed These are drawings showing the method.

In the press-type measurement method according to an embodiment of the present invention, the press-type measurement method includes a combination step (S100), a load measurement step (S200), a data collection step (S300), an error sensor node check step (S400), a cluster configuration It may include a step (S500), a data calculation step (S600), a data display step (S700), and a processing unit calculation step (S800).

The press mold measurement method may include, before the molding step (S100), mounting the load measuring plate 300 on the upper part of the press bed B, and fixing the lower mold 200 on the load measuring plate upper part. .

At this time, the lower support roller 700 formed on the load measuring plate 300 for mounting the lower mold 200 is raised by the pneumatic or hydraulic pressure of the elevating unit 710 so that the lower mold 200 is the load measuring plate 300 . It is made to move upward, and after the transfer is completed, it descends again so that the lower mold 200 can be seated on the upper part of the load measuring plate 300 .

The fixing step of fixing the load measuring plate 300 by pressing the mold clamp 800 on the outer upper portion of the load measuring plate 300 may be further included.

In the fixing step, the lower mold 200 may be fixed at both sides of the lower mold 200 to prevent the lower mold 200 seated on the upper portion of the load measuring plate 300 from horizontally moving.

In addition, in the fixing step, the lower mold 200 may be fixed by pressing the auxiliary clamp 820 on at least a portion of the lower mold 200 .

6 and 7, the molding step (S100) is an upper mold 100 and a lower mold 200 that are formed to press the material S from the upper portion so that the material S can be press-molded. ) are combined.

Before the molding step (S100), the material (S) may be fixed with a blank holder formed on the side of the mold so that the material (S) can be installed between the upper mold 100 and the lower mold 200 .

Thereafter, the upper mold 100 descends the material S fixed in the molding step S100 to be molded with the lower mold 200 .

In the load measuring step ( S200 ), a load value according to time may be measured through a plurality of measuring sensors 400 formed inside the load measuring plate 300 supporting the lower mold 200 .

The load measurement step (S200) includes the self-weight of the lower mold 100, the self-weight of the upper mold 200, the pressing force and the load cell of the press ram (R) at positions where each sensor of the plurality of measurement sensors 400 is formed, The repulsive force of the load measuring plate 300 and the pressure of the mold clamp, which will be described later, may be measured for each time.

The data collection step ( S300 ) may store sensor data measured at each node in which the plurality of measurement sensors 400 are located.

In the data collection step (S300), each pressure value according to a predetermined distance in all areas of the lower mold 200 is measured by a plurality of measurement sensors 400, and data of each measured value is transmitted to the control unit 500. This is the saving step.

The error sensor node confirmation step (S400) is a step of identifying an abnormal value among the values measured by the plurality of measurement sensors 400, detecting the position of the sensor in which the abnormal value is detected, and determining the error sensor node (ER). .

In the cluster configuration step S500 , the error sensor node ER and neighboring nodes of the error sensor node ER may be configured as a node cluster NC.

In the cluster configuration step ( S500 ), the area around the sensor determined as the error sensor node (ER) as the above-described outlier in the error sensor node checking step ( S400 ) may be designated as the node cluster (NC).

The data calculation step S600 may determine an error value of the error sensor node ER.

The data calculation step S600 calculates and compares the difference between the measured load and the actual load of the error sensor node ER, and determines the error value of the error sensor node ER as non-uniformity, and based on the non-uniformity data It is a step of calculating so that the user can process at least a portion of the upper mold 100 and the lower mold 200 .

Specifically, as shown in FIG. 7 , the data calculation step S600 may include a weight calculation step S610 , a prediction value calculation step S620 , and a similarity calculation step S630 .

The weight calculation step S610 may calculate a load weight according to a distance and a direction from each of the neighboring nodes formed around the error sensor node ER.

The weight calculation step (S610) is different depending on the self weight of the lower mold 100 at each position measured by the plurality of measurement sensors 400, the weight of the upper mold 200, the pressing force of the press ram R, etc. A weight may be calculated, and in particular, a weight weight of the erroneous sensor node ER may be calculated.

In the prediction value calculation step S620 , the predicted value of the error sensor node ER may be predicted by applying the load weight calculated in the weight calculation step S610 to the error sensor node ER.

The predicted value calculation step ( S620 ) may apply a load weight from the loads measured by the plurality of measurement sensors 400 to estimate the actual load of the node in which each sensor is actually located as the predicted value. In particular, it is possible to calculate the load weight to the load of the error sensor node (ER) and predict it as a predicted value.

In the similarity calculation step S630, an actual value of the error sensor node ER may be derived by searching for a node cluster NC and a similar cluster meeting a reference value.

In the similarity calculation step (S630), a similar node cluster (NC) is searched for and designated as a similar cluster at the time of consolidation of different rounds or at the time of consolidation of different molds, and a node at a position similar to the position of the error sensor node (ER) in the similar cluster Alternatively, it is a step of deriving an actual value of a node at the same location.

As shown in Figure 7, the press-type measuring method according to an embodiment of the present invention may further include a comparison step (S900).

In the comparison step S900 , the predicted value of the error sensor node ER predicted in the prediction value calculation step S620 may be compared with the actual value derived in the similarity calculation step S630 .

In this case, the comparison step ( S900 ) may include a determination step of determining the next step by comparing the difference between the predicted value and the actual value with a threshold value.

In the determining step, when the difference between the predicted value and the actual value compared in the comparison step (S900) is greater than the threshold, data is transmitted to the cluster configuration unit 530 to reconstruct the node cluster (NC), When it is less than or equal to the threshold value, data may be transmitted to the data display unit 550 to be described later.

That is, when the predicted value calculated in the comparison step S900 and the actual value are greater than the threshold value, a second node cluster NC2 larger than the node cluster NC configured in the cluster configuration step S500 is configured. The data calculation step (S600) is repeated, and when the predicted value and the actual value calculated in the comparison step (S900) are smaller than the threshold value, it is determined as the error value and the data display step (S700) can be performed. .

In this case, the threshold value may include an average deviation derived from data that has been repeatedly combined or performed in another mold, or an input deviation previously input by a user, the average deviation and the input By storing all the deviations, a threshold value may be derived as an average value.

6 and 7, in the data display step (S700), the error value is converted into data as the non-uniformity of the lower mold 200 and the upper mold 100 and displayed.

The data display step (S700) is a step in which the non-uniformity of the shape calculated through the load history diagram for each part of the lower mold 200 is created and displayed in the form of a graph or a load distribution diagram. That is, the data display step S700 may represent non-uniformity data such as a graph or a distribution map.

In this case, a data preprocessing operation is performed in consideration of a case in which data measured from the plurality of measurement sensors 400 is lost or there is an error, and the result may be visualized in the form of a graph or a distribution chart.

The machining part calculation step ( S800 ) is a step of calculating at least a portion of the upper mold 100 and the lower mold 200 as a machining part through the non-uniformity.

The finishing amount for processing at least a portion of the upper mold 100 and the lower mold 200 may be determined based on the non-uniformity data such as a graph or a distribution map shown in the data display step S700 .

For example, as shown in FIG. 9 , a location of an error sensor node ER and a neighboring node may be checked, and a node cluster NC may be configured.

Then, a weight according to the location of each of the erroneous sensor neighboring nodes may be calculated, and the erroneous sensor node value may be predicted by considering the actual measured value of each neighboring node and the weight. At the same time, it is possible to search a node cluster similar to the node cluster (NC) and derive the actual value of the error sensor position.

In this case, the node cluster search may be performed preferentially from the nearest time zone, and the error node location may be excluded. In addition, in some cases, the user may designate the similarity by considering the value of the neighboring node, and the similarity criterion by considering whether or not the search range is limited.

The error node cluster having the actual value is compared with the found similar node cluster, and if the comparison-calculated similarity index is larger than the user-specified value, the calculation is terminated and the next step is performed, and it is less than or equal to the user-specified value. In this case, it is possible to reconfigure the node cluster into an area separated by 1 from the initial node, and repeat the search for weights, predictions, and similar node clusters.

According to the press-type measuring method according to an embodiment of the present invention, quantitative numerical data and visualization data can be obtained by analyzing the load result value for each part, and accordingly, the finishing area and the finishing processing amount can be visualized.

In addition, problems such as mold deformation, press guide ram deformation, cushion die deformation, and cushion pressure change that may occur due to changes in site conditions over time can be recognized in advance through load sensors and vibration sensors, and facility maintenance , mold maintenance, etc. can prevent quality defects.

Although the present invention has been described with reference to one embodiment shown in the drawings, which is merely exemplary, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

S: material
ER: error sensor node
NC: node cluster
100: upper mold
200: lower mold
300: load measuring plate
400: measuring sensor
500: control unit
510: collection unit
520: error sensor node confirmation unit
530: cluster configuration part
540: data calculation unit
541: weight calculation unit
542: predictive value calculation unit
543: similarity calculation unit
550: data display unit
560: comparison unit
600: vibration measuring unit
700: lower support roller
800: mold clamp
810: buffer unit
820: auxiliary clamp

Claims (12)

A load measuring plate that supports an upper mold formed to be molded by pressing the material and a lower mold that is incorporated into the upper mold, and a plurality of measuring sensors for measuring a load therein are formed; and
a control unit for determining an abnormal part through the load for each part of the lower mold measured by the plurality of measurement sensors;
Including, press-type measuring device. The method of claim 1,
The plurality of measurement sensors,
It is formed on the upper portion of the load measuring plate, each of the plurality of measuring sensors are spaced apart a certain distance formed in a matrix structure having rows and columns, a press-type measuring device. The method of claim 1,
The control unit is
a collection unit for storing sensor data measured at each node in which the plurality of measurement sensors are located;
an error sensor node check unit for detecting a location of an error sensor node in which an abnormality has occurred among the plurality of measurement sensors;
a cluster configuration unit for configuring the error sensor node and neighboring nodes of the error sensor node as a node cluster;
a data calculation unit for determining an error value of the error sensor node; and
a data display unit which converts the error values into data as non-uniformities between the lower mold and the upper mold and displays the data;
Including, press-type measuring device. 4. The method of claim 3,
The data calculator
a weight calculation unit for calculating a load weight according to a distance and a direction from each of the neighboring nodes formed around the error sensor node;
a predicted value calculator for predicting a predicted value of the error sensor node by applying the load weight calculated by the weight calculator to the error sensor node; and
a similarity calculation unit for deriving an actual value of the error sensor node by searching for a similar cluster matching the node cluster and a reference value;
Including, press-type measuring device. 5. The method of claim 4,
a comparison unit for comparing the predicted value of the error sensor node predicted by the prediction value calculation unit with the actual value derived from the similarity calculation unit;
Further comprising, a press-type measuring device. The method of claim 1,
a vibration measuring unit for measuring the vibration of the lower mold so as to analyze the presence or absence of abnormality when the upper mold and the lower mold are combined;
Further comprising, a press-type measuring device. The method of claim 1,
a lower support roller formed on the load measuring plate so that the lower mold can move on the upper portion of the load measuring plate and aligned in place;
Further comprising, a press-type measuring device. The method of claim 1,
mold clamps formed on both sides of the lower mold to fix the lower mold;
Further comprising, a press-type measuring device. A molding step in which an upper mold and a lower mold formed to be molded by pressing the material are combined;
a load measuring step of measuring a load value over time through a plurality of measuring sensors formed inside the load measuring plate supporting the lower mold;
a data collection step of storing sensor data measured at each node in which the plurality of measurement sensors are located;
an error sensor node checking step of detecting a location of an error sensor node in which an abnormality has occurred among the plurality of measurement sensors;
a cluster configuration step of configuring the error sensor node and neighboring nodes of the error sensor node as a node cluster;
a data calculation step of determining an error value of the error sensor node;
a data display step of converting the error value into data as a non-uniformity degree of the lower mold and the upper mold; and
a machining part calculating step of calculating at least a portion of the upper mold and the lower mold as a machining part through the non-uniformity;
Including, press-type measuring method. 10. The method of claim 9,
The data calculation step is
a weight calculation step of calculating a load weight according to a distance and a direction from each of the neighboring nodes formed around the error sensor node;
a predicted value calculation step of predicting a predicted value of the error sensor node by applying the load weight calculated in the weight calculation step to the error sensor node; and
a similarity calculation step of deriving an actual value of the error sensor node by searching for a similar cluster matching the node cluster and a reference value;
Including, press-type measuring method. 11. The method of claim 10,
a comparison step of comparing the predicted value of the error sensor node predicted in the predicted value calculation step with the actual value derived in the similarity calculation step;
Further comprising a, press-type measuring method. 12. The method of claim 11,
If the predicted value and the actual value calculated in the comparison step are larger than the user-specified value, configure a second node cluster larger than the note cluster configured in the cluster configuration step and repeat the subsequent steps,
When the predicted value and the actual value calculated in the comparison step are smaller than the user-specified value, it is determined as the error value.

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