JP2019041474A - Manufacturing method of laminate and manufacturing line of the same - Google Patents

Abstract

To provide a manufacturing method of a laminate, and a manufacturing line of the laminate, capable of adjusting a laminate height (lamination thickness) even the laminate height of the laminate is set within an allowable tolerance.SOLUTION: A manufacturing method of a laminate, comprises: a press working line 10 having a plate thickness measurement device 18 that measures a plate thickness of a thin plate work; a measurement line 20 comprising a laminate measurement device 21 that measures laminate height of a lamination core 1; and a PLC 30 as a control device, which controls so as to compare the lamination height of the lamination core 1 measured with a calculation lamination height of the lamination core 1 calculated from the plate thickness of a lamination steel plate 3 and the number of laminations in each timing of measuring the lamination height of the lamination core 1, calculate a correction value converted in per one of the laminate steel plate 3 processed, adjusts the correction value to the plate thickness measured of the lamination steel plate 3 constructing the lamination core 1 newly processed, and corrects a difference between the lamination height of the lamination core 1 measured and the calculation lamination height of the lamination core 1.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a method for manufacturing a laminate formed by laminating thin plate works and a production line for the laminate.

  Patent Document 1 describes a laminated iron core manufacturing apparatus. According to this, a station provided with a punching means for switching a caulking projection of a core piece and a caulking through hole with a caulking punch on a metal plate, Thickness measurement of the laminated core provided on the exit line of the laminated station in a laminated iron core manufacturing apparatus provided with a station where a core piece is drawn into a die and laminated via a caulking through hole and a caulking projection. A long device and an iron core thickness signal are input and compared with a preset set thickness value. If the tolerance is exceeded, an arbitrary number of thickness average values of laminated cores thereafter are calculated. The sheet thickness signal of the iron core piece from the center is compared with the average value of the calculated thickness values accumulated up to the set thickness at each timing, and the difference is added to the sheet thickness signal from the thickness gauge as a correction value. Output the caulking protrusion punching signal until Lamination thickness was composed of a lamination thickness control device for outputting a caulking through holes punched switching signal Once exceeded.

  As a result, there was no stacking error due to temperature rise at the time of punching and stacking, fine floating dust in the work environment, or thickness deviation of the core piece, and an iron core with improved dimensional accuracy of the stacking core thickness was obtained. .

Japanese Unexamined Patent Publication No. 7-115756

  However, in the above-mentioned laminated core manufacturing apparatus, after exceeding the allowable tolerance, it is added to the plate thickness signal from the plate thickness gauge as a correction value, and a caulking projection punching signal is output until the set product thickness is reached. There is no disclosure about how to adjust the thickness when it is within.

  In view of the above, the present invention provides a method for manufacturing a laminate and a laminate capable of adjusting the laminate height (stack thickness) of the laminate even when the laminate height is within an allowable tolerance. The purpose is to provide a body production line.

In invention of Claim 1, the measurement result measured by measuring the plate | board thickness of a thin-plate workpiece | work with a thin-plate workpiece | work measuring apparatus is input into a control apparatus,
Laminating the thin plate work processed by the processing means to form a laminate,
The laminate height of the laminate is measured by a laminate measuring device,
Each time the control unit measures the stack height of the stack,
The measured laminate height of the laminate is compared with the calculated laminate height of the laminate calculated from the plate thickness and the number of laminates of the thin workpiece, and converted into one processed thin plate workpiece. Calculated correction value,
The correction value is added to or subtracted from the measured plate thickness of the thin workpiece constituting the laminate to be newly processed, and the measured laminate height of the laminate and the calculated laminate height of the laminate are calculated. Control is performed to correct the difference.

  According to this, every time the stacking height of the stack is measured, the correction value converted per processed thin plate workpiece is adjusted, so that the stacking height of the stack is within the allowable tolerance. Even in this case, the stacking height of the stacked body can be adjusted. Furthermore, the dimensional accuracy of the laminate can be improved by correcting the difference between the laminate height of the completed laminate and the calculated laminate height.

  Further, the correction value is processed next to the stacked body that is processed after the stacked height of the stacked body is measured and that is stacked when the stacked height of the stacked body is measured. The correction value is added to or subtracted from the measured plate thickness of the thin plate work constituting the laminated body.

  According to this, when the correction value is adjusted to the measured plate thickness of the thin plate work constituting the laminated body being processed, the correction value may not be adjusted in time depending on the processing timing. Therefore, the correction value can be reliably added or subtracted by adding or subtracting the correction value to the measured plate thickness of the thin plate work constituting the laminate to be processed next.

  Further, the provisional correction value stored in advance in the control device is added to or subtracted from the measured plate thickness of the thin workpiece until the stack height of the first laminate is measured.

  According to this, the calculated stacking height of the laminate calculated from the measured stacking height of the laminate and the thickness and number of stacks of the thin workpieces is compared unless at least several stacks are processed. Therefore, it is possible to adjust the stacking height of the stacked body from the start of the processing work by storing preset temporary correction values and adjusting the temporary correction values.

  Further, the laminate is formed by laminating the thin plate workpieces through an adhesive, and the thin plate workpiece is washed by a cleaning unit before being measured by the thin plate workpiece measuring device. And

  According to this, the measurement precision of a thin-plate workpiece | work is ensured, and manufacture of the laminated body laminated | stacked via an adhesive agent can be performed suitably.

Further, the present invention as an object has a thin plate workpiece measuring device for measuring the thickness of a thin plate workpiece, and a press processing line for laminating thin plate workpieces processed by press processing,
A measurement line equipped with a laminate measurement device for measuring the laminate height of the laminate,
Each time the laminate height of the laminate is measured, the measured laminate height of the laminate is compared with the calculated laminate height of the laminate calculated from the plate thickness and the number of laminates of the thin workpiece. Then, the correction value converted per one processed thin plate workpiece is calculated, and the correction value is adjusted to the measured plate thickness of the thin plate workpiece constituting the laminate to be newly processed. A control device that controls to correct the difference between the measured stack height of the laminate and the calculated stack height of the stack;
It is characterized by having.

  According to this, every time the stacking height of the stack is measured, the correction value converted per processed thin plate workpiece is adjusted, so that the stacking height of the stack is within the allowable tolerance. Even in this case, the stacking height of the stacked body can be adjusted. Furthermore, the dimensional accuracy of the laminate can be improved by correcting the difference between the laminate height of the completed laminate and the calculated laminate height.

  In addition, the correction value is processed after the stacked body that has been stacked after the stacked height of the stacked body is measured and when the stacked height of the stacked body is measured. The correction value is added to or subtracted from the measured plate thickness of the thin plate work constituting the laminate.

  According to this, when the correction value is adjusted to the measured plate thickness of the thin plate work constituting the laminated body being processed, the correction value may not be adjusted in time depending on the processing timing. Therefore, the correction value can be reliably added or subtracted by adding or subtracting the correction value to the measured plate thickness of the thin plate work constituting the laminate to be processed next.

  Further, the provisional correction value stored in advance in the control device is added to or subtracted from the measured plate thickness of the thin workpiece until the stack height of the first laminate is measured.

  According to this, the calculated stacking height of the laminate calculated from the measured stacking height of the laminate and the thickness and number of stacks of the thin workpieces is compared unless at least several stacks are processed. Therefore, it is possible to adjust the stacking height of the stacked body from the start of the processing work by storing preset temporary correction values and adjusting the temporary correction values.

  Further, the laminated body is formed by laminating the thin plate workpieces via an adhesive, and the thin plate workpieces are washed by a cleaning device disposed on the upstream side in the transport direction from the thin plate workpiece measuring device. It is characterized by.

  According to this, the measurement precision of a thin-plate workpiece | work is ensured, and manufacture of the laminated body laminated | stacked via an adhesive agent can be performed suitably.

It is a schematic plan view of the manufacturing line of the laminated body of one Embodiment of this invention. It is a control block diagram of the embodiment. It is explanatory drawing of the memory | storage part of PLC. It is a flowchart of operation | movement of the manufacturing line of a laminated body. It is a flowchart of operation | movement of a laminated body measuring apparatus. It is a front view of the processed laminated core.

  Next, an embodiment of a method for manufacturing a laminate and a production line for the laminate will be described with reference to the drawings. In the following description, the top and bottom in FIG. 1 are the front and rear, the left is the left, the right is the right, the front side of the paper is up, the back side of the paper is down, and the direction.

  Further, as shown in FIG. 1, a single thin plate workpiece punched from the strip-shaped workpiece W will be described as a laminated steel plate 3 (see FIG. 6). Further, a laminated body as a finished product in a state where a predetermined number of laminated steel plates 3 are laminated and caulked is referred to as a laminated core 1.

  The laminated core 1 is formed in a press processing line 10 configured with a press machine 11.

  As shown in FIG. 1, the production line M includes a press processing line 10 and a measurement line 20. The press processing line 10 and the measurement line 20 are installed at positions parallel in the front-rear direction. The press line 10 and the measurement line 20 are connected by a conveyor 19.

  As shown in FIG. 1, the press processing line 10 includes an uncoiler 12, a loop controller 13, a plate thickness measuring device 18 as a thin plate workpiece measuring device, and a feed on the left side (upstream in the conveying direction) of the press machine 11. And a scrap conveyor (not shown) are arranged on the right side (downstream in the conveying direction).

  A coiled strip-shaped workpiece W is wound around the uncoiler 12 so that the strip-shaped workpiece W can be conveyed toward the press machine 11.

  The loop controller 13 forms the belt-like workpiece W conveyed from the uncoiler 12 in a loop shape, and prevents the belt-like workpiece W conveyed to the press 11 from being subjected to excessive tension. It is configured to be able to automatically adjust the vertical movement.

  The feeding device 14 is mounted on the left side of the press machine 11 and is configured to grip the belt-like workpiece W and transport the belt-like workpiece W toward the press machine 11 by intermittent movement.

  Between the loop controller 13 and the feeding device 14, a plate thickness measuring device 18 configured by an optical sensor or the like and measuring the plate thickness in the vertical direction of the belt-like workpiece W is disposed.

  More specifically, the plate thickness measuring device 18 measures the plate thickness of a portion to be punched as the laminated steel plate 3 of the strip-like workpiece W. The measured plate thickness of the strip-shaped workpiece W becomes the thickness of the laminated steel plate 3 as the punched thin plate workpiece.

  Japanese Patent Application No. 2009-133480 (Japanese Patent Application Laid-Open No. 2010-133480) previously filed by the applicant of the present application is provided with a plurality of stations (not shown) for laminating the laminated steel plates 3 punched by processing the strip-shaped workpiece W. -283937) The laminated core manufacturing apparatus 16 is arranged.

  The belt-like workpiece W is conveyed in order along the left-right direction (conveyance direction) while being subjected to predetermined processing at each station of the press machine 11. Then, at a predetermined station, the single laminated steel plate 3 is punched from the strip-shaped workpiece W, and the remaining scrap is conveyed to a scrap conveyor (not shown).

  As shown in FIG. 6, the punched laminated steel plates 3 are stacked in a predetermined number along the vertical direction and then caulked at a station that is the final step of the press machine 11 to form the laminated core 1.

  The crimped laminated core 1 is conveyed to the measurement line 20 via the conveyor 19.

  An existing laminated body measuring device 21 is disposed in the measurement line 20 and the laminated height of the laminated core 1 is measured. A transport space for discharging the stacked core 1 whose height is measured as a defective product or carrying it out as a non-defective product is formed on the downstream side in the transport direction of the stacked body measuring device 21.

  As shown in FIG. 2, the control circuit of the production line M includes a plate thickness measuring device 18, a laminated body measuring device 21, a laminated core manufacturing device 16 and a display unit 40, which are programmable logic controllers (hereinafter referred to as PLCs). Connected to 30).

  The plate thickness measuring device 18 is capable of transmitting to the PLC 30 the plate thickness of the portion to be punched as the laminated steel plate 3 of the strip-shaped workpiece W.

  The laminated body measuring apparatus 21 can transmit the measured laminated height of the laminated core 1 to the PLC 30.

  The display unit 40 can receive signals from the PLC 30 and can transmit signals to the PLC 30.

  The laminated core manufacturing apparatus 16 can receive a signal from the PLC 30.

  The PLC 30 includes an MPU calculation unit, a storage unit, an input unit, an output unit, and the like.

  FIG. 3 is a schematic explanatory diagram of the storage unit of the PLC 30, where m is the product number of the laminated core 1, and Pn is the serial number of the laminated steel sheet 3 (the part to be punched as the laminated steel sheet 3 of the strip-like workpiece W). , Nm represents the number of laminated steel sheets 3 and Hm represents the lamination height of the laminated core 1.

  In addition, it is possible to memorize the measured thickness of the portion to be punched as the laminated steel plate 3 of the strip-shaped workpiece W in Pn, and the laminated height of the laminated core 1 in Hm.

  Although not shown in FIG. 3, provisional correction values are stored in the storage unit of the PLC 30. In the production line M of the present embodiment, a correction value to be described later is not calculated until the stack height of the first first stacked core 1 is measured, so that a defective product may occur.

  The provisional correction value is calculated in advance by accumulating correction value data with different conditions such as work environment, material, manufacturer, etc., and in order to suppress the occurrence of defective products of the laminated core 1, the first first laminated core This is provisionally applied until a stack height of 1 is measured.

  The operation of the production line M will be described based on the flowcharts shown in FIGS.

The definitions in the figure are shown below.
A: Stack height (set value) (A = 15mm)
B: Tolerance (± B) (B = 0.2 mm)
h _n : height during lamination h _n = h _(n−1) + t ′ _n
t ′ _n : Apparent plate thickness t ′ _n = t _n + Δt
Δt: Thickness change after lamination (correction value)
Δt = (Hm−h _Nm ) ÷ Nm
t _n : thickness measurement value Nm: number of stacked sheets Δt ₀ : initial value at start (Δt = Δt ₀ ) Hm: measured value of stacking height (also referred to as stacking height)
h _Nm : Calculated stack height First, m = 1, that is, the first stacked core 1 is assumed (S1). The first laminated steel plate 3 constituting the laminated core 1 (part to be punched as the laminated steel plate 3 of the strip-like workpiece W) is set to product number n = 1, and the starting stacked height h _{0 is set} to 0 ( S2). Then, the height h _n in the stack is set to h _(n−1) + t ′ _n (S3).

More specifically, the apparent plate thickness is t ′ _n = t _n + Δt, and the plate thickness change amount (correction value) after lamination is Δt = (Hm−h _Nm ) ÷ Nm.

  In other words, the laminated steel sheet processed by comparing the measured laminated height of the laminated core 1 with the calculated laminated height of the laminated core 1 calculated from the thickness and number of laminated steel sheets 3. 3 The correction value Δt converted per sheet is calculated, and the correction value Δt is added to or subtracted from the measured thickness of the laminated steel plate 3 constituting the laminated core 1 to be newly processed.

Next, it is determined whether h _n <A−B. That is, it is determined whether the height during lamination is lower than the lower limit of the allowable tolerance (S4). If the height during lamination is lower than the lower limit of the allowable tolerance (in the case of YES), the product number is set to n = n + 1 (S5), and the process returns to S3.

If the height during lamination is higher than the lower limit of the allowable tolerance (in the case of NO), the process proceeds to S6. Then, it is determined whether h _n > A + B. That is, it is determined whether the height during lamination is higher than the upper limit of the allowable tolerance (S6). If the height during lamination is higher than the upper limit of allowable tolerance, error output is performed (S7). This error output is confirmed in order not to further laminate the laminated steel sheet 3 because it becomes a defective product if the height during lamination is higher than the upper limit of the allowable tolerance (in the case of YES).

  If the height during lamination is lower than the upper limit of the allowable tolerance (in the case of NO), the process proceeds to S8. In this case, the height in the stack is higher than the lower limit of the allowable tolerance and lower than the upper limit of the allowable intersection, that is, within the allowable intersection.

  Then, Nm ← n is set (S8). That is, the number of the product number is the number of stacked layers. Thereby, the number of stacked layers is determined and stored.

  And the signal which complete | finishes lamination | stacking of the lamination | stacking of the laminated steel plate 3 to the determined lamination | stacking number of sheets is transmitted to the laminated core manufacturing apparatus 16 (S9). Further, m = m + 1 is set (S10), and the process returns to S2. This means that the second laminated core 1 is used.

  FIG. 5 illustrates operations related to the laminate measurement apparatus 21. The laminated body measuring device 21 measures the laminated height of the laminated core 1 (S11). Then, it is determined whether (A + B)> Hm> (A−B). It is determined whether it is higher than the lower limit of the intersection of the laminated cores 1 and lower than the upper limit. That is, it is determined whether it is within the allowable tolerance. If within the allowable tolerance (in the case of YES), the process proceeds to S13, the value of the measured value Hm of the stacking height is stored, and the process returns to S11. If it is not within the allowable tolerance, the process proceeds to S14, and the laminated core 1 which is a defective product is ejected from the measurement line 20.

  Next, the operation of the production line M will be described. The belt-like workpiece W unwound from the uncoiler 12 is gripped by the feeding device 14 while being looped by the loop controller 13 and is conveyed into the press machine 11. At this time, the plate thickness measuring device 18 measures the plate thickness (the plate thickness of the strip-shaped workpiece W) of the portion to be punched as the laminated steel plate 3 of the strip-shaped workpiece W, and inputs and stores it in the storage unit of the PLC 30.

  At this time, the above-described provisional correction value is added to or subtracted from the thickness of the portion to be punched as the laminated steel plate 3 of the strip-shaped workpiece W.

  In the press machine 11, after each processing is performed at a plurality of stations, the laminated steel sheet 3 is punched from the belt-like workpiece W and laminated.

  When the height during lamination (calculated lamination height of the laminate in the claims) calculated from the thickness and the number of laminated steel sheets 3 exceeds the lower limit of the allowable tolerance and is lower than the upper limit of the allowable tolerance The laminated steel sheets 3 are formed as the crimped laminated core 1 at the final station of the laminated core manufacturing apparatus 16.

  The laminated core 1 is pushed out of the mold at the final station of the press 11 and moves onto the conveyor 19. The laminated core 1 moved on the conveyor 19 is conveyed by the conveyor 19 and moves to the laminated body measuring device 21.

  In the laminated body measuring apparatus 21, the height position of the produced laminated core 1 is detected, the laminated height is measured, and the measured value Hm is transmitted to the PLC 30 and stored in the storage unit.

  Then, in the PLC 30, the measured stacking height of the stacked core 1 (measured value Hm) is compared with the calculated stacking height of the stacked core 1 calculated from the plate thickness and the number of stacked sheets of the stacked steel plates 3, The correction value Δt converted for each processed laminated steel sheet 3 is calculated, and the correction value Δt is added to or subtracted from the measured thickness of the laminated steel sheet 3 constituting the newly processed laminated core 1.

  The laminated core 1 to be processed next to the laminated core 1 that has been laminated after the laminated height of the laminated core 1 is measured and when the laminated height of the laminated core 1 is measured. It is desirable that the correction value is adjusted to the measured thickness of the laminated steel sheet 3 to be configured.

  In the second and subsequent laminated cores 1, every time the laminated height of the laminated core 1 is measured, the calculated correction value Δt is repeatedly adjusted.

  The production line M for the laminated core 1 includes a plate thickness measuring device 18 as a thin plate workpiece measuring device for measuring the thickness of a thin workpiece, and press working for laminating laminated steel plates 3 as thin plate workpieces processed by press working. The laminated height of the laminated core 1 measured each time the laminated height of the laminated core 1 is measured with the line 10 and the laminated body measuring device 21 that measures the laminated height of the laminated core 1. And the calculated lamination height of the laminated core 1 calculated from the plate thickness and the number of laminated sheets of the laminated steel sheet 3, the correction value converted for each processed laminated steel sheet 3 is calculated, A correction value is added to or subtracted from the measured thickness of the laminated steel plate 3 constituting the laminated core 1 to be processed into a difference between the measured laminated height of the laminated core 1 and the calculated laminated height of the laminated core 1. A control device that controls to correct And PLC30 of Te, characterized in that it comprises.

  According to this, every time the laminated height of the laminated core 1 is measured, the correction value converted per one processed laminated steel sheet 3 is adjusted, so that the laminated height of the laminated core 1 has an allowable tolerance. Even in the case, the stacking height of the stacked core 1 can be adjusted. Furthermore, the dimensional accuracy of the laminated core 1 can be improved by correcting the difference between the laminated height of the completed laminated core 1 and the calculated laminated height.

  The correction value is processed after the laminated core 1 that has been laminated after the laminated height of the laminated core 1 is measured and when the laminated height of the laminated core 1 is measured. The correction value is added to or subtracted from the measured thickness of the laminated steel plate 3 constituting the laminated core 1.

  According to this, when the correction value is adjusted to the measured plate thickness of the laminated steel plate 3 constituting the laminated core 1 being processed, the correction value may not be adjusted in time depending on the processing timing. Therefore, the correction value can be reliably adjusted by adding or subtracting the correction value to the measured plate thickness of the thin plate work constituting the laminated core 1 to be processed next.

  Further, the provisional correction value stored in advance in the PLC 30 is added to or subtracted from the measured thickness of the laminated steel plate 3 until the laminated height of the first laminated core 1 is measured.

  According to this, at least several laminated cores 1 are processed as the calculated laminated height of the laminated core 1 calculated from the measured laminated height of the laminated core 1, the plate thickness and the number of laminated sheets of the laminated steel plates 3. Since it is difficult to compare without it, the provisional correction value set in advance is stored, and by adjusting the provisional correction value, the lamination height of the laminated core 1 can be adjusted from the start of the machining operation. .

  In addition, this invention is not limited to the said structure. That is, various design changes can be made without departing from the gist of the present invention.

  For example, although the laminated core 1 is formed as a laminated body by caulking, it can be applied to a laminated core in which the laminated steel plates 3 are laminated via an adhesive. In this case, before the strip-shaped workpiece W is measured by the plate thickness measuring device 18, the strip-shaped workpiece W is cleaned by the cleaning device, and the mechanism for caulking processing at each station of the press machine 11 is eliminated. 3 is applied to the laminated core 1 that has been sent to the feeding device 14 and is crimped by the adhesive application device.

  If it is set as the said structure, the measurement precision of the laminated steel plate 3 as a thin-plate workpiece | work is ensured, and manufacture of the lamination | stacking core laminated | stacked via an adhesive agent can be performed suitably.

  Moreover, after each laminated steel plate 3 is formed as a temporary crimped temporary laminated body at the final station and finally crimped, the height of the laminated core 1 can be measured. In this case, the hydraulic servo press of Japanese Patent Application No. 2008-323838 (Japanese Patent Laid-Open No. 2010-143125), previously filed by the present applicant, can be used as the laminate measuring apparatus (Japanese Patent Laid-Open No. 2010-143125). , See FIGS.

  Moreover, the laminated body processed with the manufacturing method and manufacturing line of this invention is not limited to a laminated core, as long as it forms by laminating | stacking, Other laminated bodies may be sufficient.

DESCRIPTION OF SYMBOLS 1 Laminated core 3 Laminated steel plate 10 Press processing line 16 Laminated core manufacturing apparatus 18 Plate thickness measuring apparatus 20 Measuring line 21 Laminated body measuring apparatus 30 Programmable logic controller (PLC)
M production line

Claims (8)

The thickness of the thin workpiece is measured by the thin workpiece measuring device and the measured result is input to the control device.
Laminating the thin plate work processed by the processing means to form a laminate,
The laminate height of the laminate is measured by a laminate measuring device,
Each time the control unit measures the stack height of the stack,
The measured laminate height of the laminate is compared with the calculated laminate height of the laminate calculated from the plate thickness and the number of laminates of the thin workpiece, and converted into one processed thin plate workpiece. Calculated correction value,
The correction value is added to or subtracted from the measured plate thickness of the thin workpiece constituting the laminate to be newly processed, and the measured laminate height of the laminate and the calculated laminate height of the laminate are calculated. A method for producing a laminate, which is controlled so as to correct a difference. The correction value is
After the stack height of the stack is measured and when the stack height of the stack is measured, the stack is processed next to the stack being processed. The method for manufacturing a laminate according to claim 1, wherein the correction value is added to or subtracted from the measured plate thickness of the thin workpiece.   The provisional correction value stored in advance in the control device is added to or subtracted from the measured thickness of the thin workpiece until the stack height of the first stacked body is measured. The manufacturing method of the laminated body of 2. The laminate is formed by laminating the thin plate work via an adhesive,
The method for manufacturing a laminate according to claim 1, 2 or 3, wherein the thin plate workpiece is cleaned by a cleaning means before being measured by the thin plate workpiece measuring device. A pressing line for laminating thin plate workpieces that have been processed by pressing and having a thin plate workpiece measuring device that measures the thickness of the thin workpiece;
A measurement line equipped with a laminate measurement device for measuring the laminate height of the laminate,
Each time the laminate height of the laminate is measured, the measured laminate height of the laminate is compared with the calculated laminate height of the laminate calculated from the plate thickness and the number of laminates of the thin workpiece. Then, the correction value converted per one processed thin plate workpiece is calculated, and the correction value is adjusted to the measured plate thickness of the thin plate workpiece constituting the laminate to be newly processed. A control device that controls to correct the difference between the measured stack height of the laminate and the calculated stack height of the stack;
A laminate production line comprising: The correction value is
After the stack height of the stack is measured and when the stack height of the stack is measured, the stack is processed next to the stack being processed. 6. The production line for a laminate according to claim 5, wherein the correction value is adjusted to a measured thickness of the thin plate workpiece.   The provisional correction value stored in advance in the control device is added to or subtracted from the measured plate thickness of the thin workpiece until the stack height of the first laminate is measured. Or the production line of the laminated body of 6. The laminate is formed by laminating the thin plate work via an adhesive,
The production line for a laminate according to claim 5, 6 or 7, wherein the thin plate workpiece is cleaned by a cleaning device disposed upstream of the thin plate workpiece measuring device in the conveying direction.

Images