JPH085568B2 - Superimposed supply status determination device for articles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention, in the case of moving and supplying an article such as a metal plate or printing paper to another place (such as a processing apparatus), the article may be partially or standardly copied. The present invention relates to a superimposed supply status determination device for articles for determining whether or not each article is accurately supplied.

(Prior Art) Conventionally, when articles such as printed sheets or printed matter that is packaged and bundled in a fixed bundle are supplied to other positions one by one or in part, occurrence of double or double copy feeding is detected. As a method to do so, measure the thickness and weight of each supplied product unit and compare it with the reference value (thickness and weight value of one unit product), or supply it to other positions on the printing paper. In this case, the amount of transmitted light on multiple printed sheets that overlap each other is reduced compared to one sheet of printed paper. ), And if it is included in a certain allowable range with respect to the reference value, and if it is included, it is determined that overlapping supply does not occur, and if it is not included, it is determined that overlapping supply or insufficient supply occurs. Is common.

However, if the thickness of the product to be supplied, such as a sheet, repeatedly changes according to a certain regularity, it is necessary to set the reference value only for the number of times the thickness changes within the repetition cycle. Can't handle it.

(Object of the Invention) When the present invention supplies several kinds of articles on a line at a constant cycle, it is possible to detect whether or not each of the articles is supplied one by one or in part. The purpose is to

(Structure of the Invention) In the present invention, n kinds of individual articles having different characteristic values such as weight or thickness showing the characteristics of the articles, optical density, etc. are arranged in advance or prepared in a stacking manner in accordance with a predetermined repeating cycle m. Detecting means for sequentially detecting characteristic values D _mn ( _m ; number of cycles _n ; rank within unit cycle) of the articles taken out one by one from the group of articles, and a known reference characteristic value D _n of each article designated in advance. , Or a memory means for storing the detection characteristic value D _mn of each article in real time in the unit cycle by the detecting means, and the reference characteristic value or the detection characteristic value, based on the determination reference characteristic value D _n ± ΔD _n or D _{(m-1) n} ± ΔD _n for setting the judgment reference characteristic value setting means, and the comparison judgment means for comparing the detection characteristic value D _mn with the judgment reference characteristic value to judge the presence or absence of superimposition during article supply And a superimposition supply form for articles, characterized by comprising: It is a situation determination device.

(Example) The present invention will be described in detail according to an example.

FIG. 1 is a side view showing a repeated stacking state of sheet articles according to an embodiment of the present invention. For example, three kinds of sheets a ₁₁ , a ₁₂ and a ₁₃ having different thicknesses are sequentially arranged in a predetermined order. It is one that is repeatedly stacked. a ₁₁ is a sheet having a standard thickness of D ₁₁ (paper brand A ₁ ), a ₁₂ is a sheet having a standard thickness of D ₁₂ (paper brand A ₂ ), and a ₁₃ is a standard thickness of D ₁₃ (paper brand A ₁ ). It is a sheet of paper brand A ₃ ). For example, D ₁₁
Is 0.1 mm, D ₁₂ is 0.3 mm, and D ₁₃ is 0.5 mm. Then, the sheets of thicknesses D ₁₁ , D ₁₂ , and D ₁₃ are stacked according to a predetermined repeating order to prepare the article group a in advance.

FIG. 2 is a side view of the sheet processing machine. The article group a prepared in advance in FIG. 1 is stacked on the sheet stacking table 1 of the processing machine, and the supply / feeding section 2 such as a suction device is used to perform the above-mentioned 3
According to the type of the order sheet A _1, A _2, was determined to A _3, the sheet a ₁₁ which is stacked engaged repeatedly _{Ding, a 12, a 13, a} 11, a 12, a 13,
.. are sent out one by one onto a conveyor feeder 3 such as a conveyor belt and supplied in the direction of the processing section 5. The processing unit 5 is, for example, a print coating device, a pressing device, a binding device, a cutting device, an etching device, or the like. A transmissive photosensor detector 4 is provided in the middle of feeding the article of the feeder 3, and a light beam from the sensor detector 4 (for example, a projector) is detected by the light receiving sensor 4a via the article to be conveyed. This detector may be a mechanical thickness gauge such as a caliper.

FIG. 3 is a graph showing the transition of the characteristic value D _mn as the measured thickness data of the sheet article detected by the detector 4 at three types of thickness cycles. The Y axis is the thickness characteristic value data D _mn measured by a photo sensor, a thickness meter, etc., and the X axis is a supply sheet a ₁₁ , a ₁₂ , a in which three types of sheets that are sequentially supplied are plotted in the supply order. ₁₃ , a ₁₁ ,
It shows a ₁₂ , a ₁₃ , ....

FIG. 4 shows the judgment reference characteristic value D _n ± Δ from the known characteristic value D _n such as the thickness and weight of an article such as a sheet and the allowable value ± ΔD _n.
In the superimposed supply status determination device according to the embodiment of the present invention in the case of manually inputting the initial setting of D _n , the sheet
A _1, A _2, A ₃ and shows the determination reference characteristic value D _n ± ΔD _n for · · · A _n, previously fed their respective donor sheet has been set input before (n type) specific known Quality (JI
To the characteristic value D _n (center value) that indicates quality standard value such as S standard,
It shows the judgment standard characteristic value of D _n ± ΔD _n that is obtained by adding ± ΔD _n as an allowable value that has been input from the beginning based on the variation of the known quality peculiar to the supply sheet before the supply, The X-axis is the various sheets A ₁ , A ₂ ,
A ₃ ... A _n , and the Y-axis is the judgment reference characteristic value (D ₁ ± ΔD ₁ , D for judging _whether the detection characteristic value D _mn of the sheet corresponding to each sheet is normal or abnormal. ₂ ± ΔD ₂ , D ₃ ± Δ
D ₃ , ... D _n ± ΔD _n ). The sheets A ₁ , A ₂ , A _3, ... A _n of each type on the X-axis are plotted and displayed in the sheet supply order.

FIG. 5 is a repetition of a regular arrangement (A ₁ , A ₂ , A ₃ , ... A _k ) in which the number of kinds of articles such as printed sheets, metal plates and other small packages is k in the present invention. Each detection characteristic value D _mn = D _jk (D ₁₁ ,
D ₁₂ ...... D _jk ).

The present invention in the case of automatically setting the judgment reference characteristic value D _mn ± ΔD _n calculated from the detection characteristic value D _{mn of the} article such as a sheet obtained by detecting in real time at the time of supplying the article and the known allowable value ± ΔD _n Another embodiment will be described. For example, m =
Each detection data D ₁₁ , D ₁₂ , D ₁₃ , from the 1st to the kth in the first cycle
_{D 14, D 15, ····· D} 1k read into memory means, known tolerance ± [Delta] D ₁ with the respective article that has been predetermined corresponding to the respective people reading data, ± ΔD _2, ± ΔD ₃ , ± D ₄ ,, ± D ₅ ,
・ ・ ・ ・ ・ ± D _K (known quality variation peculiar to each article) is automatically added to the detection characteristic value, and m =
Judgment reference values for judging whether the supply state in the second cycle is normal or abnormal D ₁₁ ± ΔD ₁ , D ₁₂ ± ΔD ₂ , D ₁₃ ± ΔD ₃ , D ₁₄ ± ΔD ₄ ,
・ ・ ・ D _1n ± D _n , ・ ・ ・ D _1k ± ΔD _k are calculated, and based on this determination reference value, normal supply of the 1st to _kth articles in the sheet supply operation of the second cycle, The abnormality (whether or not the superimposed supply is not performed) is determined.

In this way, the detection characteristic value D of the m-th cycle is sequentially obtained.
_mn (thickness, weight, optical density, etc.) is a known permissible value peculiar to the detection characteristic value D _{(m-1) n of the (m-1) th} cycle and peculiar to the supply operation article (n kinds of articles) ± ΔΔ _The value is compared with a determination reference value D _{(m-1) n} ± Δn obtained by adding _n, and if it is within the reference value, it is determined to be normal, and if it is outside the reference value, it is determined to be abnormal.

As a general formula for comparison and determination between the determination reference characteristic value and the detection characteristic value at each point when the article is supplied, the number of cycles at that point is m, the number of repetitions (the number of types of articles) is n, If the detection characteristic value is D _mn , the criterion value is D _{(m-1) n} ± ΔD _n
Therefore, D _{(m-1) n-} ΔD _n <D _mn <D _{(m-1) n} + ΔD _n is confirmed as a judgment formula for each detection, and the detection characteristic value D _mn is calculated by the above formula (judgment reference value). If the condition is satisfied), the nth item supplied in the m cycle is not immediately supplied in a superposed state at the time of detection (predetermined number of sheets, each number of copies are supplied). Therefore, a normal signal is issued. On the other hand, if the above equation is not satisfied, it is determined that at least the superimposing supply has been made (not being supplied for each predetermined number of copies or copies) at the time of detection, and an abnormal signal is issued to stop the machine or give an alarm. It is a display.

FIG. 6 is a block diagram showing an outline of the device of the present invention, which is a characteristic value D _mn detecting means as a detector or a known reference characteristic value D _n input means, a memory means, and a characteristic value D _mn.
Read-out means for reading out the reference characteristic value D _{(m-1) n} obtained by the above or known reference characteristic value D _n data from the memory, a timing generator for issuing a signal for every one cycle of the supply device, for every n cycles A timing generator that outputs a signal, or a timing setting means such as a cam switch that rotates at a 1 / n cycle, a proximity sensor, or an n-ary counter, and an allowable value input setting means that inputs and sets a known allowable value ± ΔD _n , Judgment reference characteristic value setting means for calculating and setting the judgment reference characteristic value from the reference characteristic value and the permissible value, and comparison for judging the detection characteristic value D _mn and the judgment reference characteristic value and issuing a signal for normal supply / abnormal supply And a determining means.

FIG. 7 is a flowchart for determining the superimposed supply status of the article in one embodiment of the device of the present invention when a known determination reference characteristic value is initially set and the reference value is set in advance before the detection is started. The characteristic values (center value and its allowable value) peculiar to the product that are required to be supplied are input to the memory for initial setting of the judgment reference characteristic value setting means for each type of product, and the The allowable width is added to the central value of the characteristic values to obtain the judgment reference characteristic value for each type of product,
After the reference characteristic value is recorded in the buffer memory according to the supply order, a determination reference characteristic value is sequentially output from the buffer memory according to the supply order of the article for each article supply in accordance with a signal from the supply timing sensor from the first cycle. The signal and the detected characteristic value signal of the article are compared and judged, and it is judged whether the characteristic value detected for each supply is within the range of the judgment reference characteristic value. If it is out of the range, it is determined that the abnormal number of sheets is supplied, and the superimposed supply state of the article is determined.

The determination equation of this case, a _{D n -ΔD n <D mn <} D + ΔD n.

FIG. 8 shows the case of determining the superimposed supply status of an article in another embodiment of the present invention when the determination reference characteristic value is calculated and initialized in real time when the article is supplied,
It is a flow chart in the case of using only the detection characteristic value D _1n of each of the n kinds of articles in the first cycle as the central value after the supply is started and the detection of the superimposed supply state is started. Using only the detection characteristic value D _1n of various articles in the cycle (m = 1) as the central value for setting the judgment reference characteristic value, the numerical value of the known permissible width prepared in advance for each article to be supplied (± ΔD _n ) is input and added to the above central value to set the judgment reference characteristic value D _1n ± ΔD _n after m = 2. The buffer memory is repeatedly used in a predetermined order within one cycle. The judgment reference value is recorded. The determination reference characteristic value automatically set in the first cycle (m = 1) is supplied as the determination reference for the detection characteristic value of the article supplied in the second cycle (m = 2) and thereafter. It is to judge whether there is normal or abnormal.

The determination formula in this case is D _1n −ΔD _n <D _mn <D _1n + ΔD _n .

(Effect of the Invention) The present invention is to sequentially prepare articles having different characteristic values of one unit (one unit of an article to be supplied) such as thickness, weight, optical density, etc. at a predetermined predetermined repeating cycle. In the case of supplying, the characteristic values of the articles sequentially supplied are detected during the transportation, and the measured detection characteristic value D _mn and the detection characteristic value detected in real time at the time of supply are determined. Detected characteristic value D _{(m-1) n of} one cycle before calculated and corresponded in order, or known quality peculiar to the supplied article that was set and input before supply (quality such as JIS standard of the article) (Reference value) the characteristic value D _n indicating the center value, and to this center value, as a permissible value previously determined based on the known quality variation peculiar to the supplied article before supply ±
If D _{(m-1) n} ± ΔD _n with ΔD _n added or the judgment reference characteristic value of D _n ± ΔD _n is compared, and if the center value −ΔD _n <D _mn <center value + ΔD _n , then A normal operation signal is issued, indicating that there is no occurrence of overlapping supply (supply of two or multiple sheets).

When the comparison result is D _mn <center value −ΔD _n , it is considered that the phase shift of the article array stacking cycle (collation error, etc.) with respect to the repetition cycle of the reference value occurs due to the occurrence of the superimposing supply, and the superimposing supply An abnormal signal is issued as occurrence.

Also, if the comparison result is the central value + ΔD _n <D _mn , it means that there is a phase shift (such as collation error) of the article array stacking cycle with respect to the repetition cycle of the reference value due to the occurrence of overlapping supply, and there is occurrence of overlapping supply. As an abnormal signal is emitted.

(Effects of the Invention) The device of the present invention arranges or stacks several kinds of articles having different characteristic values such as thickness or weight or optical density according to a predetermined repetition period, or a group of articles according to the order. When supplying and transporting to other places, this is a device for confirming and determining that the products are not being delivered in a superposed state, not only for the same product, but also for repeated delivery and continuous delivery of different products in one line. It is possible to achieve simplification of the detection mechanism of occurrence of the above, and to exert a remarkable effect in the determination of the superimposed supply state in the continuous supply of different kinds of articles which has been impossible in the past.

[Brief description of drawings]

FIG. 1 is a side view of an article to be detected using the apparatus of the present invention, FIG. 2 is a side view of an embodiment of the apparatus of the present invention, and FIG. 3 is an example of repeated data of article detection characteristic values in the apparatus of the present invention. 4 is an explanatory view showing an example of repeated data of reference characteristic values in the device of the present invention, FIG. 5 is an explanatory diagram showing detection characteristic values detected by the device of the present invention, and FIG. FIG. 7 is a block diagram of the invention device, FIG. 7 is a flow chart showing the operation of the invention device when inputting and setting a known reference characteristic value, and FIG. 8 is an operation when the reference characteristic value of the invention device is automatically set in real time. It is a flowchart showing. 1 ... Goods supply table, 2 ... Goods supply / delivery section, 3 ...
Supply / conveyance means, 4 ... Characteristic value detector, 5 ... Processing section, a
…… Article group, a ₁₁ ,, a ₁₂ ,, a ₁₃ …… 1st cycle article, a ₂₁ ,
a ₂₂ , a ₂₃ …… 2nd cycle article, a ₃₁ , a ₃₂ , a ₃₃ …… 3rd cycle article, D _mn …… detection characteristic value, A ₁ , A ₂ , A ₃ , A _{4 ,,} ... A _k …… Type of supplies, m …… Supply cycle, j …… Supply cycle, n…
… Supply order, k …… Number of types of goods

Claims (1)

[Claims] 1. A group of articles in which n kinds of individual articles having different characteristic values such as at least weight or thickness indicating the characteristics of articles, optical density, etc. are arranged or prepared in advance by collating and stacking in accordance with a predetermined repeating cycle m. Detection means for sequentially detecting characteristic values D _mn ( _m ; number of cycles _n ; rank within unit cycle) of articles taken out one by one, and known reference characteristic value D _n of each article designated in advance, or the detection Means for storing the detection characteristic value D _mn of each article in real time in a unit cycle by the means, based on the reference characteristic value or the detection characteristic value, the determination reference characteristic value D _n ± ΔD _n or D _{(m- 1)} Equipped with a judgment reference characteristic value setting means for setting _n ± ΔD _n , and a comparison judgment means for comparing the detection characteristic value D _mn with the judgment reference characteristic value to judge the presence or absence of superposition at the time of article supply. An article superimposition supply status determination device characterized by the above.