JPH06238371A - Stacking controller - Google Patents

Abstract

PURPOSE:To make the stacking height of materials to be stacked as close as possible to a target stacking height by providing MPU by which a necessary number of sheets to be stacked is determined based on the target number of sheets and the adjusted number of sheets to be stacked. CONSTITUTION:By MPU, upon an input from a press forming machine 14, the height of a hole inputted from a sensor and the present number of stacked sheets of fins inputted from a sheet counter are read in. Whether or not the MPU number of stacked sheets has reached a target number of sheets of fin is judged; if it has, the press operation of the press forming machine 14, the cutting operation of a cutter 22, and the stacking operation of a stacker 32 are stopped; and the stacker 32 is controlled to replace the stacking part 34a, 34b. By MPU, a count value is compared with the number of specific number of shots; if the value is larger than the specific number of shots, the arithmetic operation is returned to the prescribed step; and if the comparison is turned out other than that, the read-in height is added to the value in the memory to make it renewed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stack control device, and more particularly, when stacking a stack material formed by a press molding machine so as to project a convex portion on a base surface portion with a gap between the convex portions. The present invention relates to a stack control device that detects the excess and deficiency of stack material so that the stack height becomes a target stack height.

[0002]

2. Description of the Related Art For example, in a heat exchanger such as a room cooler, a large number of fins for heat exchanger (which is an example of a stack material) formed of thin metal plates such as aluminum are laminated in order to improve the heat exchange effect. Become. A through hole with a collar (which is an example of a convex portion) having a predetermined height is formed in each of the heat exchanger fins by press molding. A heat transfer tube is inserted into the through hole with a collar to expand the heat exchange area of the heat transfer tube to improve the heat transfer efficiency of the heat exchanger (see, for example, JP-A-3-128131). When manufacturing a heat exchanger such as the room cooler, a predetermined number of heat exchanger fins must be stacked at the above-mentioned collar intervals to achieve a predetermined stacking height.
However, in the press molding machine for forming the fins for the heat exchanger, the upper mold and the lower mold generate heat and expand due to the continuous press working, and the height of the formed collar changes. If the height of the collar changes as the press working progresses, the stacking height will differ from the target stacking height even if the predetermined number of heat exchanger fins are stacked. In order to solve this problem, the applicant of the present application provides a means for detecting the minimum distance between the upper mold and the lower mold of the press molding machine, and the detected minimum distance is deviated from a predetermined target minimum distance. In this case, a patent application for a press molding machine provided with an adjusting mechanism for adjusting the relative driving amount of the upper mold and the lower mold of the press molding machine so as to correct the deviation is first filed (Japanese Patent Application No. 4-32635). issue).

[0003]

However, the above method for adjusting the stack height of the stack material to the target stack height has the following problems. In order to correct the unevenness of the height of the convex portion by providing the press molding machine with an adjusting mechanism for adjusting the relative driving amount of the upper mold and the lower mold of the press molding machine, the adjusting mechanism is used in the press molding machine. Therefore, there is a problem that the manufacturing cost of the press molding machine cannot be increased. Further, if the relative driving amount of the upper die and the lower die is adjusted at any time during the continuous press working, the adjustment takes time, and the work must be stopped during that time, which causes a problem that the work efficiency decreases. Therefore, it is an object of the present invention to provide a stack control device capable of making the stacking height of stack material as close to the target stacking height as possible without providing a special adjusting mechanism in the press molding machine.

[0004]

In order to solve the above problems, the present invention has the following constitution. That is, in the first configuration, when stacking a plurality of stack materials having convex portions by a press molding machine at intervals of the convex portions,
A stack control device that controls the number of stacked stack materials so that the stack height is a target stack height that is a height when a target stack of reference stack materials having a protrusion of a standard height is stacked. Detecting means for detecting the height of the convex portion, storage means for sequentially storing the height of the convex portion detected by the detecting means, and counting means for counting the current number of stacked stack materials The average height of the convex portion of the stack material is obtained, the difference between the expected stacking height and the target stacking height when stacking the target number of stack materials is obtained, and the stack material necessary to eliminate the difference is obtained. The convex portion is formed via the calculating means and the detecting means for obtaining the adjusted laminated sheet number, which is the laminated sheet number, and for obtaining the necessary laminated sheet number required to make the stacking height of the stack material the target stacking height. every While detecting the height of the formed convex portion, the detected height of the convex portion is sequentially stored in the storage means, the current stacking number of the stack material is less than the target number of stacked layers at a specific time, The average height of the convex portions is obtained through a calculating means, the difference between the planned stacking height and the target stacking height is obtained based on the average height, the adjusted stacking sheet number is obtained, and the target sheet number and the adjusting stacking sheet are obtained. And a control means for determining the required number of layers based on the number of sheets.

Further, in the second structure, when a plurality of stack materials having convex portions are laminated by a press molding machine at intervals of the convex portions, the laminated height is a convex portion having a reference height. A stack control device for controlling the number of stacked stack materials so that a target stack height, which is a height when a target number of stacks of reference stack materials having the above is obtained, is a detecting means for detecting the height of the convex portion. Storage means for sequentially storing the heights of the convex portions detected by the detecting means, counting means for counting the current number of stacked layers of the stack material, and average height of the convex portions of the stack material. And a current stacking height of the stack material, a difference between the current stacking height and the target stacking height, and a calculating means for calculating the shortage of the stack material necessary to eliminate the difference. , The detection Each time the convex portion is formed through a step, the height of the formed convex portion is detected, and the detected heights of all or some of the convex portions are sequentially stored in the storage means, and the current stack is formed. When the number of stacked layers of material reaches a specific number which is less than the target number of stacked layers, the average height of the convex portions is calculated through the arithmetic means, and the average height and the current number of stacked layers calculated through the counting means. And a control means for determining the difference between the current stack height and the target stack height based on the above, and for calculating the shortage number from the difference and the average height.

[0006]

In the first stack control device, the control means detects the height of the formed convex portion every time the convex portion is formed through the detection means, and sequentially stores the detected height of the convex portion. It is stored in the means, and at a specific time when the number of stacked layers of the current stack material is smaller than the target number of stacked layers, the average height of the convex portions is calculated through the calculating means, and the planned stacking height and the target stacking height are calculated based on the average height. It is possible to obtain the difference between the target number of sheets and the adjusted number of stacked sheets, and the required number of stacked sheets based on the target number of sheets and the adjusted number of stacked sheets. In addition, in the second stack control device, the height of the formed convex portion is detected every time the convex portion is formed via the detection means, and the detected heights of all or some of the convex portions are sequentially stored. When the number of stacked layers of the current stack material reaches a specific number less than the target number of stacked layers,
The average height of the convex portions is calculated through the calculating means, and the difference between the current stacking height and the target stacking height is calculated based on the average height and the current number of stacked layers obtained through the counting means. The number of shortages can be calculated from the height.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings. As an example, a case where the stack control device according to the present invention is used in a heat exchange fin manufacturing device will be described. Therefore, in this embodiment, the stack material is a fin for a heat exchanger having a through hole with a collar formed therein, and the convex portion is a collar of the through hole with a collar,
The stack control device is a control device for controlling a stacking mechanism (stacker) that stacks a large number of press-formed fins for the heat exchanger. FIG. 1 is a front view of an apparatus for manufacturing heat exchange fins, which is an example of a stack material using the stack control apparatus according to the present invention. FIG. 2 is a block diagram showing the configuration of the stack control device of FIG. FIG. 3 shows FIG.
FIG. 3 is a cross-sectional view of a main part showing fins stacked on the stacker. FIG. 4 is a front view showing a sensor attached to the press molding machine of FIG. 1. FIG. 5 is a flowchart showing the operation of the first embodiment. FIG. 6 is a flowchart showing the operation of the second embodiment.

The first embodiment will be described. First, the configuration will be described with reference to FIGS. 1, 2, and 3. 1
Reference numeral 0 is an uncoiler, around which the strip-shaped aluminum thin plate 12 before the through holes with collars and the like are wound. The heat exchanger fin is formed by pressing the strip-shaped aluminum thin plate 12 and then cutting it into a predetermined size. The strip-shaped aluminum thin plate 12 is used to perform this press work and the like.
Are sequentially drawn from the uncoiler 10. Reference numeral 14 denotes a press molding machine (fin press), which presses the strip-shaped aluminum thin plate 12 pulled out from the uncoiler 10 under the control of the MPU described later (for example, forming a through hole with a collar and forming a louver). Also, press molding machine 1
From 4, a shot signal indicating a pressing operation is output for each shot. The press molding machine 14 of this embodiment is the upper mold 1.
6 can move up and down, and the lower die 18 has a fixed height position. Further, the press molding machine 14 has a feeding device 2
0 is provided, and the strip-shaped aluminum thin plate 12 processed by the preset feed pitch D is sent out in accordance with the press working.

A post-processing device 22 is composed of a die device 24 for hollowing, a slitter 26 for slitting, a transfer device 28 for transferring the slit aluminum thin plate 12, and a cutter 30. M to be described later
The strip-shaped aluminum thin plate 12 controlled by the PU and pressed by the press molding machine 14 is taken in according to the pressing speed of the press molding machine, subjected to hollowing and slitting, and further cut into a predetermined size to form a rectangular shape. The strip-shaped heat exchanger fins 31 are used. Reference numeral 32 denotes a stacker, which stacks the heat exchanger fins 31 that are cut by the cutter 22 under the control of the MPU described below one by one.
a or 34b, and one stack part 3
When the lamination of the fins 31 on 4a or 34b is completed, it has a function of replacing the fin 31 with the other stack portion 34b or 34a. The stack parts 34a, 34b
Is composed of a base portion 36 and two stack rods 38 provided upright on the base portion 36, and the base portion 36 is capable of half rotation about a shaft 40. The stacker 32 brings the collar through holes 42 of the mounted heat exchanger fins 31 into correspondence with the two stack rods 38 and drops the heat exchanger fins 31. By repeating this operation, the heat exchanger fins 3
1 can be stacked. In addition, by rotating the base portion 36 halfway around the shaft 40, the stack portions 34a, 34b
Can be replaced. FIG. 3 shows a partial cross-sectional view of a state in which the heat exchanger fins 31 are stacked on the stack portion 34a. In addition, the inner diameter of the through hole 42 with a collar is formed to be larger than the outer diameter of the stack rod 38 so that the fins 31 for heat exchanger fall surely when they are stacked.

Next, the stack control device will be described with reference to FIG. 2 (block diagram). Reference numeral 44 denotes a sensor which is an example of a detecting means, which is provided in the press molding machine 14 and has a through hole 42 with a collar formed by press working.
Height a (see FIG. 3) is detected and sent to the MPU described later. In the present embodiment, a reflection type optical sensor is used as the sensor 44, but an eddy current type distance measuring sensor or the like may be used instead of the optical sensor. As shown in FIG. 4, the sensor 44 includes a light projecting / receiving unit 44a provided on the lower mold 18 and a reflecting unit 44b provided on the upper mold 16, and the upper mold 16 moves downward to reach bottom dead center. At this time, the distance a between the light emitting / receiving unit 44a and the reflecting unit 44b is detected. Distance a is through hole 42 with collar
Since the distance a is detected every time the collared through hole 42 is formed, the height a of the collared through hole 42 of each heat exchanger fin 31 is not measured and each press step is performed. It is possible to detect the height a of the through hole with collar 42 at. The light emitting / receiving unit 44a may be provided on the upper mold 16 and the reflecting unit 44b may be provided on the lower mold 18. Reference numeral 46 is a sheet number counter as counting means, which is provided in the post-processing device 22,
By counting the number of fins 31 cut by the cutter 30, the number of stacked fins 31 of the fins 31 stacked on the stack portions 34a and 34b is counted and sent to the MPU described later.

Reference numeral 48 is a microprocessor (MPU) having the functions of arithmetic means and control means. MPU48 is
As the calculation means, (1) the average height of the through holes 42 with collars, (2) the target stacking height which is the height when the target number of heat exchanger fins having the collar of the reference height are stacked,
(3) Difference between the planned stacking height and the target stacking height when the target number of heat exchanger fins having the average height are stacked, and (4) Stacking of the heat exchanger fins having the average height required to eliminate the difference. The number of adjusted laminated sheets, which is the number of laminated sheets, and (5) the required laminated number of heat exchanger fins having an average height required to make the heat exchanger fins the target laminated height. Further, the MPU 48 serves as a control means, which is a reference height A of colored through holes, which is input via a keyboard and a display, which will be described later, a target number B of fins, and the number of colored through holes formed in one fin ( The number of stages C, the feed pitch D of the feeding device 20, and the constant E for determining the number of specific shots of the press molding machine 14 that determines a specific time point described later are stored. Further, the start-up and stop of the press molding machine 14, the cutter 22, and the stacker 32 are controlled. Also, the sensor 4
Height a of the colored through hole 42 for each shot through 4
(Distance a) is detected and stored, and the height a of the through hole 42 with a collar is sequentially integrated through a calculation means and stored as a sensor integrated value. Further, the shot signal from the press molding machine 14 is counted through the calculation means and stored as the number of shots. Further, the number of heat exchanger fins 31 stacked on the stacker 32 is detected via the number counter 46, and at a specific time when the number of stacked layers is smaller than the target number of stacked layers, the sensor integrated value and the number of shots stored via the calculating means are detected. The average height of the colored through holes 42 is calculated based on
Based on the average height, the required number of laminated heat exchanger fins having the average height required to obtain the target laminated height of the heat exchanger fins is obtained according to the procedure described later. In some cases, the required number of stacked layers is sufficient, but in order to compensate for an error caused by the accuracy of the sensor 44, the required number of stacked sensors
MPU48 is multiplied by a constant (constant obtained by experience) α for complementing the accuracy of
Alternatively, the stacker 32 may be controlled on the basis of the number of stacks required for correction so that the heat exchanger fins 31 are stacked on the stack portions 34a and 34b so that the target stack height is reached.

Reference numeral 50 denotes a RAM, which has a first memory area.
Memory, a second memory, a third memory ,. The first memory has a reference height A of the through holes with collars, the second memory has a target number B of fins, and the third memory
The number of the through holes with collars (the number of stages) C formed in one fin in the memory of No. C, the feed pitch D in the fourth memory, and the fifth
The memory E stores a constant E for determining the number of specific shots of the press molding machine 14 that determines a specific time, and the sixth memory stores a constant α for complementing the accuracy of the sensor 44. In addition, the RAM 50 temporarily stores control data, input data, output data, various data such as calculation results, and information. If it is necessary to save the data in the RAM 50, it may be stored in an external storage device (not shown). 52 is a ROM, which is an MPU
48 operating systems, control programs, etc. are stored. Reference numeral 54 denotes a keyboard, which allows an operator to input various commands, control data, and the like. A display 56 outputs and displays commands and data input from the keyboard 54, operation data processed by the MPU 48, information and the like. In addition, MPU48, R
The AM 50 and the ROM 52 may be provided in the press molding machine 14 or the post-processing device 22, or may be provided separately.

Next, the operation of the stack control device of this embodiment will be described with reference to the control procedure of the MPU 48 with reference to the flow chart of FIG. When the power is turned on, MPU48
Is started, the control program or the like is read from the ROM 52, the contents of the RAM 50 are cleared, and the control data and various types of data for calculation are input. At this time,
The operator inputs the reference height A of the through holes, the target number of fins B, the number of through holes (the number of stages) C, the feed pitch D, the constant E, and the constant α for complementing, via the keyboard 54 and the display 56. (Step 100). The above data is stored in the ROM 52 in advance, and the keyboard 54
It may be stored in the RAM 50 when a predetermined command is input from. When the MPU 48 completes storing the above data in the RAM 50, the press molding machine 1
4, the cutter 22, and the stacker 32 are controlled to start each device (step 102), and the number of specific shots of the press molding machine 14 that determines a specific time point is calculated using the following mathematical formula 1, and the seventh memory To memorize inside. Also,
The eleventh memory is cleared from the eighth memory (step 104). Number of specific shots: M7 = (B × E × C) / D However, M7 is converted into an integer by rounding off fractions.

Next, the MPU 48 waits for the input of a shot signal from the press molding machine 14 (step 106), and if there is an input, the height a of the through hole 42 input from the sensor 44 and the number counter 46 input. The current number b of stacked fins to be stacked is read (step 108). MPU4
8 determines whether or not the number of stacked sheets b reaches the target number B of fins (step 110), and when it reaches the target number B of fins, the press operation of the press molding machine 14, the cutter operation of the cutter 22, and the stacking of the stacker 32 are performed. The operation is stopped and the stacker 32 is controlled to exchange the stack parts 34a and 34b (step 112), and the process returns to step 102. Also,
If it has not reached, the value (M8) in the eighth memory in which the count value of the number of shots is stored is incremented by 1 (step 114).

Subsequently, the MPU 48 compares the count value M8 with the specific shot number M7 (step 116). When the count value M8 is larger than the specific shot number M7, the process returns to step 106, and in other cases, it is read in step 108. The value a in the ninth memory (M
9) and add and update to add (step 1
18). Further, the MPU 48 again compares the count value M8 with the specific shot number M7 (step 120). If the count value M8 has not reached the specific shot number M7, the process returns to step 106. Two
4 through 4, the error average of one colored through hole, the adjusted number of laminated layers, and the required number of laminated layers are obtained and stored in the tenth memory, the eleventh memory, and the twelfth memory respectively, and the fin target is obtained. Corrected number B (step 122)
Then, the process returns to step 106. Average error: M10 = A-M9 / M8 Number of adjusted laminated layers: M11 = (M10 × B) / A Target number of sheets: B = B + M11 However, M7 to M11 are values stored in the seventh memory to the eleventh memory Indicates. In addition, M11 is converted into an integer by rounding off the number after the decimal point. By repeating the above procedure, press forming and cutting of the fins 31 can be performed continuously.
Further, stacking can be performed, and the stacking height h of the fins 31 stacked on the stacker 32 can be made as close as possible to the target stacking height.

Next, the operation will be described using specific numerical values. First, the calculation conditions are set as follows. (1) The height A of the reference color through hole 42 is 1.5 mm. (2) The ideal number of layers B for stacking the reference color through hole 42 to obtain the target layer height H = 200. 3) Number of the colored through holes 42 formed in one heat exchanger fin 31 C = 10 (4) In the press molding machine 14, the number of the colored through holes 42 that can be formed by one press (shot) Number D = 3 (5) The constant E for determining the number of specific shots for determining the time when the required number of stacked heat exchanger fins 31 is determined is E = 0.9.

First, the number of specific shots calculated in step 104 is calculated by using the formula 1 as follows: M7 = B × E × C / D = 200 × 0.9 × 10/3 = 6
It becomes 00 shots. Further, the calculation in step 122 is performed by calculating the height (a1 to a60) of each colored through hole 42 up to 600 shots.
When the sensor integrated value M9 of 0) is set to 942 millimeters, for example, M10 = 1.5−942 / 600 = −0.07 M11 = (− 0.07 × 200) /1.5=− 9.33
≈−9 sheets B = 200−9 = 191 sheets, and the MPU 48 drives the stacker 32 and replaces the stack portion 34a with the stack portion 34b when 191 fins are stacked on the stack portion 34a of the stacker 32, for example. Actually, when the stacking height of the fins stacked in the stacking portion 34a is calculated, the stacking height is 191 × 1.57 = 299.87 mm, and the fin having the reference color through hole is 200
Stacking height when stacking sheets: Target stacking height = 200 × 1.5 = 300 mm Corrected to a value sufficiently close to 300 mm 2.

Next, the second embodiment will be described. First, the structure will be described. However, since the structure is almost the same as that of the first embodiment, only parts different from the first embodiment will be described. The MPU 48 uses (1) the average height of the through holes 42 with collars, (2) the target stacking height that is the height when the target number of heat exchanger fins having the collar of the reference height is stacked, (3) The current stacking height of the heat exchanger fins of the average height, (4) the difference between the current stacking height of the heat exchanger fins and the target stacking height, and (5) the average required to eliminate the difference. Find the number of shortages, which is the number of stacked heat exchanger fins of height. Further, the MPU 48 serves as a control means, which is a reference height A of colored through holes, which is input via a keyboard and a display, which will be described later, a target number B of fins, and the number of colored through holes formed in one fin ( The number of stages C, the feed pitch D of the feeding device 20, and the constant F for determining the specific number of sheets of the number counter 46 for determining a specific time point, which will be described later, are stored. Further, the start-up and stop of the press molding machine 14, the cutter 22, and the stacker 32 are controlled. Further, the height a (distance a) of the colored through hole 42 for each shot is detected and stored through the sensor 44, and the height a of the colored through hole 42 is sequentially integrated through the calculating means. Stored as a sensor integrated value. Further, the shot signal from the press molding machine 14 is counted through the calculation means and stored as the number of shots. Further, the number of heat exchanger fins 31 stacked on the stacker 32 is detected via the number counter 46, and at a specific time when the number of stacked layers is smaller than the target number of stacked layers, the integrated sensor value and the number of shots stored via the calculating means are calculated. Based on the average height of the through holes 42 with collars, based on the average height, follow the procedure described later to determine the shortage of the number of heat exchanger fins with the average height required to make the heat exchanger fins the target stack height. Ask.

Next, the operation of the stack control device of this embodiment will be described with reference to the control procedure of the MPU 48 with reference to the flow chart of FIG. When the power is turned on, MPU48
Is started, the control program or the like is read from the ROM 52, the contents of the RAM 50 are cleared, and the control data and various types of data for calculation are input. At this time,
The operator inputs the reference height A of the through holes, the target number of fins B, the number of through holes (the number of steps) C, the feed pitch D, the constant F, and the constant α for complementing via the keyboard 54 and the display 56. (Step 200). The above data is stored in the ROM 52 in advance, and the keyboard 54
It may be stored in the RAM 50 when a predetermined command is input from. When the MPU 48 completes storing the above data in the RAM 50, the press molding machine 1
4, the cutter 22, and the stacker 32 are controlled to start each device (step 202), and the specific number of the number counter 46 for determining the specific time point is obtained by using the following mathematical formula 5, and stored in the seventh memory. Remember. Also, the twelfth memory is cleared from the eighth memory (step 20).
4). Number of specific shots: M7 = B × F However, M7 is converted into an integer by rounding off the number after the decimal point.

Next, the MPU 48 waits for the input of a shot signal from the press molding machine 14 (step 206). If there is an input, the height a of the through hole 42 input from the sensor 44 and the number counter 46 input. The current number b of stacked fins to be formed is read (step 208). MPU4
8 determines whether or not the number of stacked layers b has reached the target number B of fins (step 210), and when it reaches the number, the stacker 32 is controlled to jump to the replacement routine of the stack parts 34a and 34b, and press forming is performed. The press operation of the machine 14, the cutter operation of the cutter 22, and the stack operation of the stacker 32 are stopped, and the stacker 32 is controlled to exchange the stack parts 34a and 34b (step 212), and the process returns to step 202. If not reached, the value in the eighth memory in which the count value of the number of shots is stored is incremented by 1 (step 214).

Subsequently, the MPU 48 compares the number of stacked layers b with the specific number of sheets M7 (step 216). If the number of stacked shots is larger than the specific number of shots M7, the process returns to step 206. In other cases, the MPU 48 reads the high number read in step 208. The value a is added to the value (M9) in the ninth memory as the height integration memory and updated to integrate (a step 218). Further, the MPU 48 again compares the number of stacked sheets b with the specific number of sheets M7 (step 220), and determines that the number of stacked sheets b is the specific number of sheets M7.
If the number has not reached 7, the process returns to step 206, and if the specific number M7 has been reached, the difference between the current stacking height of the heat exchanger fins and the target stacking height is calculated by the following mathematical formulas 6 to 10 Of the heat exchanger fins having the average height required to eliminate the difference, the shortage number is calculated and stored in the eleventh memory, and the target number B of fins is corrected (step 222) and then step 206
Return to. Difference in stack height: M10 = A × B−b × M9 / M8 Shortage number: M11 = M10 / (M9 / M8) Target number: B = b + M11 However, M7 to M11 are the seventh memory to the eleventh memory. Indicates the value stored in memory. In addition, M11 is converted into an integer by rounding off the number after the decimal point. By repeating the above procedure, press forming and cutting of fins and further stacking can be performed continuously, and the stacking height of the fins stacked on the stacker 32 can be made as close as possible to the target stacking height.

Next, the operation will be described using specific numerical values. First, the calculation conditions are the same as in the first embodiment. However, a constant for determining the number of stacked heat exchanger fins 31 for determining the time when the shortage of the heat exchanger fins 31 is determined is F = 0.9. First, the specific number calculated in step 204 is M7 = B × F = 200 × 0.9 = 180 according to Equation 5. Further, the calculation in step 222 is performed with the colored transparency calculated from the integrated value M9 of the heights a of the colored through holes 42 and the number of shots M8 integrated until the number counter 46 reaches 180 sheets. Average height of holes 42 (M9
/ M8) is 1.57 mm, for example, M10 = 1.5 × 200−180 × 1.57 = 17.4
Mm M11 = 17.4 / (1.57) = 11.08≈11 sheets B = 180 + 11 = 191 sheets The MPU 48 stacks the stacker 32 at the time when 191 fins are stacked in the stacker 34a of the stacker 32, for example. The stack portion 34a is driven to replace the stack portion 34b. Actually, when the stacking height of the fins stacked in the stacking portion 34a is calculated, the stacking height is 191 × 1.57 = 299.87 mm, and the fin having the reference color through hole is 200
Stacking height when stacking sheets: Target stacking height = 200 × 1.5 = 300 mm Corrected to a value sufficiently close to 300 mm 2.

Although various preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and many modifications can be made without departing from the spirit of the invention. Of course.

[0024]

When the stack control device according to the present invention is used, the press molding machine is not provided with a special adjusting mechanism.
Since the stacking height of the stack material can be set to the target stacking height as much as possible, the manufacturing cost of the press molding machine can be reduced. Further, since the adjustment time of the press molding machine becomes unnecessary, the working efficiency is improved and other remarkable effects are achieved.

[Brief description of drawings]

FIG. 1 shows a front view of a heat exchange fin manufacturing apparatus which is an example of a stack material using a stack control apparatus according to the present invention.

FIG. 2 is a block diagram showing a control system of FIG.

FIG. 3 is a cross-sectional view of essential parts showing fins stacked on the stacker of FIG.

4 is a front view showing a sensor attached to the press molding machine of FIG. 1. FIG.

FIG. 5 is a flowchart showing the operation of the first embodiment.

FIG. 6 is a flowchart showing the operation of the second embodiment.

[Explanation of symbols]

 14 Press Molding Machine 31 Heat Exchanger Fin 42 Colored Through Hole 44 Sensor 46 Number Counter 48 MPU 50 RAM

Claims (2)

[Claims] 1. When stacking a plurality of stack materials having convex portions formed by a press molding machine at intervals of the convex portions, a reference stack material having a convex portion having a reference height is laminated. A stack control device for controlling the number of stacked layers of the stack material so that a target stacking height, which is a height when the target number of stacked sheets is stacked, comprising: a detection unit that detects the height of the convex portion; The storage means for sequentially storing the heights of the raised portions, the counting means for counting the current number of stacked stack materials, the average height of the raised portions of the stack material, and the stack material Then, the difference between the planned stacking height when the target number of layers is stacked and the target stacking height is obtained, and the adjusted number of stacked layers, which is the number of stacked stacking materials required to eliminate the difference, is obtained, and the stacking height of the stacking material is calculated. Previous The calculating means for obtaining the required number of stacked layers required to achieve the target stacking height, and the height of the formed protruding portion is detected each time the protruding portion is formed via the detecting means, and the detected protruding portion is also detected. The heights of the parts are sequentially stored in the storage means, and the average height of the convex portions is calculated through the calculation means at a specific time when the number of stacked layers of the current stack material is smaller than the target number of stacked layers, and the average is calculated. A control means for determining the difference between the planned stacking height and the target stacking height based on the height, determining the adjusted stacking number, and determining the required stacking number based on the target number and the adjusted stacking number. A stack control device characterized by the above. 2. A reference stack material having a protrusion height of a reference height when stacking a plurality of stack materials having protrusions by a press molding machine at intervals of the protrusions. A stack control device for controlling the number of stacked layers of the stack material so that a target stacking height, which is a height when the target number of stacked sheets is stacked, comprising: a detection unit that detects the height of the convex portion; The storage means for sequentially storing the heights of the raised portions, the counting means for counting the current number of stacked stack materials, the average height of the raised portions of the stack material, and the stack material Of the current stacking height, the difference between the current stacking height and the target stacking height, and the calculating means for calculating the shortage of stack material necessary to eliminate the difference, and the detecting means. The convex Each time, the height of the formed convex portion is detected, and the height of all or a part of the detected convex portion is sequentially stored in the storage means, and the current number of stacked layers of the stack material is When the specific number of sheets, which is smaller than the target number of stacked sheets, is reached, the average height of the convex portions is calculated through the arithmetic means, and the current stacked height is calculated based on the average height and the current number of stacked sheets obtained through the counting means. And a target stacking height, and a control means for calculating the shortage number from the difference and the average height.