JP2009048438A - Pre-cut working system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a total working time by averaging the loads of respective working machines in serial or parallel working lines equipped with same type of working machines. <P>SOLUTION: On a working line equipped with two four-side surface working machines arranged in serial, a reservoir conveyer is arranged just before the downstream working machine, and the residual number of workpieces of the downstream working machine at a working end time when a raw material to be distributed is worked by an upstream working machine is calculated S40, and working lines are distributed to the downstream until the residual number of workpieces reaches a set value, and the working lines are distributed to the upstream when the residual number of workpieces reaches the set value S50. When two lines A an B are arranged in parallel, the reservoir conveyer is installed just before the working machine of each line, and the raw material is distributed to the side with the smaller residual number of workpieces between the residual number of workpieces of B side at the end time when the raw material is worked by the A side working machine and the residual number of workpieces of A side at the end time when the raw material is worked by the B side working machine. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a system for efficiently flowing a work material to a plurality of processing machines having a similar processing function in a precut processing facility for a wooden framed housing structure material.

  Conventionally, in order to improve productivity in a pre-cut factory, there are proposals related to sorting of workpieces in a processing line (Patent Documents 1 to 3).

  Patent Document 1 arranges a plurality of processing lines in parallel and installs a transfer device so as to cross three-dimensionally with respect to the conveyor of the processing lines, and manages information to be processed for specific wood. And a system including a control means for controlling operations of the transfer conveyor and the transfer device.

  In Patent Document 2, a plurality of processing machines having different processing capacities are arranged in parallel, a storage conveyor is arranged in the vicinity of each processing machine, the processing capacity of each processing machine is stored, and the processing power supplied from the supply conveyor is stored. We have proposed a system that distributes workpieces according to the processing capacity of each processing machine.

  However, these Patent Documents 1 and 2 do not indicate what kind of control is specifically performed, and cannot propose what kind of control should be performed.

On the other hand, Patent Document 3 sends processing data created using CAD in a processing line each equipped with a precut processing machine to the CAM and converts it into control data, and loads (processing of a plurality of precut processing machines) Proposal of scheduling for leveling time).
JP 2003-170402 A JP 2006-56609 A Japanese Patent Laid-Open No. 9-104004

  This Patent Document 3 describes a specific scheduling method for serially arranged processing lines. According to the description, the processing line is composed of cutting means, first and second processing cells provided with a precut processing machine composed of a conveying means and a 4-axis orthogonal robot, a conveying means and a 5-axis orthogonal robot. A third processing cell including a pre-cut processing machine, and a fourth processing cell including a pre-cut processing machine including a conveying means and a turret.

  And the wood cut | disconnected by the predetermined dimension is sent to either the 1st process cell-the 4th process cell. At this time, the wood having a processing portion that can be processed only by one of the precut processing machines provided in the first to fourth processing cells is sent to the processing cell, and the portion is processed first, and then a plurality of precuts are processed. In processing a place that can be processed by a processing machine, the wood is distributed so that the load of each precut processing machine is leveled.

  In addition, this load leveling calculates the total machining time from the load product of the data that can be machined by multiple machining cells (machining shape x number of machining pieces x machining time per piece), and the total of each precut machine The processing time is made equal.

  Therefore, in the technique proposed in Patent Document 3, the wood that requires the end processing is distributed to the fourth processing cell after length cutting, and the wood that does not need the end processing is transferred to the first to third processing cells. The load will be distributed and the load leveled.

  However, most of the horizontal members need to be processed by the end and the side and top and bottom surfaces. For this reason, when it is going to implement the proposal of patent document 3, after distributing to a 4th process cell and performing a kerf processing first, returning to the 1st-3rd process cell, and performing a side surface and an up-and-down surface process Thus, even if the load can be leveled, the return conveyance frequently occurs during processing, and the processing efficiency may deteriorate.

  Therefore, the present invention is made for the purpose of reducing the total processing time through leveling the load of each processing machine in a serial or parallel processing line provided with a plurality of pre-cut processing machines capable of performing the same processing. It was.

The precut processing system of the present invention made to achieve the above object has the following configuration in a processing line equipped with a plurality of similar processing machines capable of performing the same precut processing on a material in a serial arrangement. It is characterized by having.
(1-1) The material storage means with respect to the downstream processing machine among the said same kind processing machines is provided.
(1-2) When starting the processing of a new material in the processing line, the downstream processing machine at the processing end time when the material is processed by the upstream processing machine of the same type of processing machines. A processing remaining number calculating means for calculating the number of remaining processing existing in the material storage means is provided.
(1-3) The processing remaining number of materials calculated by the processing remaining number calculating means is compared with a predetermined set value, and the processing is distributed to the downstream processing machine until the remaining processing number reaches the set value. When the number of remaining machining pieces reaches the set value, it is provided with a distribution means for executing the distribution of the processing to the upstream processing machine.

  According to the pre-cut processing system having such a configuration, the downstream processing machine among the same type processing machines is preferentially used at the start of processing. Then, when the remaining processing number of the material stored in the storage unit of the downstream processing machine reaches a set value, the processing is distributed to the upstream processing machine.

By the way, examples of the type of processing for the horizontal member include the following.
Upper / lower surface machining types: mortises, studs, rafters, corner notches, bolt holes, hardware mounting holes, etc. Side processing types: large dovetail, joist carving, fire carving, bolt holes, counterbore holes, hardware mounting engraving, Hardware mounting holes, etc. Finish type: large dovetail, sickle fitting, dovetail fitting, insert, bolt hole, counterbore, hardware mounting groove, hardware mounting hole, etc.

  Also, the size of the material ranges from less than 1 m to 6 m or more in length, 90 to 150 mm in width, and 90 to 450 mm in height. Different. Accordingly, if the processing load amount is determined only by the number of materials, a large difference is made from the actual one, the processing load amount becomes uneven, and a state in which one of the processing machines is played appears, and the overall processing capability is reduced.

  In the precut processing system of the present invention, since the same type of processing machines are serially arranged, the material processed by the upstream processing machine is also stored in the material storage means of the downstream processing machine, and the downstream processing machine Going through. Therefore, if the distribution is performed based on the actual number stored in the material storage means, a situation may occur in which processing is performed by the downstream processing machine until a certain point in time, and thereafter processing is performed mainly by the upstream processing machine.

  In response to these problems, the pre-cut machining system of the present invention does not determine how many materials are stored in the material storage means, but how the remaining number of processing on the downstream processing machine changes. Predict and execute the distribution. Therefore, the load can be leveled more accurately than a method in which the number of materials is feedback-controlled using a sensor to keep the load within a certain range of fluctuation. As a result, the total machining time can be shortened. Further, since the number of remaining machining for this purpose is predicted with respect to the machining end time of the upstream processing machine, it is possible to sufficiently reflect the machining progress status of the downstream processing machine.

Here, it is desirable that the precut processing system of the present invention further includes the following configuration.
(1-4) The processing machine on the downstream side is provided with a processing end notification means for notifying that when the processing ends.
(1-5) A distribution history storage unit that stores a result of distribution by the distribution unit as a history is provided.
(1-6) The processing remaining number calculating means calculates the processing end time from processing data of a material for starting the processing and information related to processing capability of an upstream processing machine among the same type of processing machines. In addition, the distribution history stored in the distribution history storage unit, the processing data of the material corresponding to the history, the status of notification from the processing end notification unit, and the downstream processing in the same type processing machine It is comprised as a means to calculate the said process remaining number in consideration of the progress of the process of the said downstream processing machine from the information regarding the processing capability of a machine.

  By providing such a configuration, it is possible to more accurately execute the above-described prediction of the number of machining residues.

Moreover, it is desirable that the precut processing system of the present invention further includes the following configuration.
(1-7) The same type processing machine is an upper and lower side surface processing machine, and is continuously arranged as a processing machine, and the upstream type similar processing machine is provided with a cross-cut saw.
(1-8) When the sorting unit distributes the processing to the same type of processing machine on the downstream side, the same type of processing machine on the upstream side has a cutting control unit for sending the material downstream when cutting with a cross cut saw is performed. Be prepared.

  When processing a horizontal member for a house, the time required for processing the upper and lower side surfaces is on average longer than the time required for the end processing. On the other hand, the crosscut executed at the time of material input is completed in a short time during the processing of the horizontal member. By providing the configurations of (1-7) and (1-8), the length of the machining time is effectively used, and when the machining is started, the distribution to the downstream machine is preferentially executed to some extent, and the number of machining residues When the machine reaches the set value and the downstream processing machine is continuously operating, the upper and lower surface side machining is executed by the upstream processing machine, and the situation where each processing machine is idle is reduced. be able to.

In this case, it is desirable to further include the following configuration.
(1-9) The set value is set to a value of 50% or less (more preferably 40% or less, more preferably 30% or less) of the storage capacity of the material storage means.

  As described above, the material storing means positioned immediately before the downstream processing machine also stores the material processed by the upstream processing machine on the upper and lower side surfaces. Accordingly, by providing the configuration of (1-9) as well, when a material that requires a very long processing time is allocated to the downstream processing machine, and the remaining number of processing does not decrease easily, the upstream processing machine Even if the processing of the material that has been handled by the material becomes relatively simple and can be processed one after another in a short time, it is possible to avoid the temporary stop of the material charging due to the storage capacity of the material storage means being exceeded. As a result, it is possible to prevent the occurrence of a new problem for the purpose of shortening the total machining time by leveling the load of the same type of machine.

In addition, the precut machining system of the present invention made to achieve the above-described object is a parallel arrangement of machining lines each having the same type of processing machine capable of performing the same precut machining on a material on the A side and the B side. In addition, the following configuration is provided.
(2-1) A material storage means is provided on the upstream side of each of the same type processing machines.
(2-2) When processing a new material in the processing line, the B side at the processing end time when the material is processed by the A-side processing machine among the parallel-type similar processing machines The remaining number of processings stored in the material storage means of the processing machine and the material storage means of the A-side processing machine at the processing end time when the material is processed by the B-side processing machine A processing remaining number calculating means for calculating the remaining processing number is provided.
(2-3) A distribution unit that compares the number of machining residues on the A side calculated by the machining remaining number calculation unit and the number of machining residues on the B side and distributes the machining to the side with the smaller number of machining residues is provided. That.

  According to the pre-cut machining system having such a configuration, the machining is distributed in order to both the A and B machines at the start of machining. Then, in the case where the content of processing for a material distributed to either one is complicated and many, processing distribution is executed so as to average the number of remaining processing with respect to the temporal transition of the processing status.

  As mentioned above, considering the processing for horizontal members, there are many types and the sizes of the materials are also different, so judging from the simple number makes a big difference from the actual and the processing load is uneven. Therefore, there is a possibility that one of the processing machines will be in a play state and the overall processing capacity will be reduced.

  On the other hand, the present invention is not merely how many materials are stored in the material storage means with respect to the parallel processing lines, but the number of remaining processing of the processing machines on both the A and B sides. Sorting is executed based on the prediction result of how it will change. Therefore, the load can be leveled more accurately than the method of feedback-controlling the change in the number using a sensor. As a result, the total machining time can be shortened. In addition, since the number of remaining machining on the other side of A and B for this purpose is predicted with respect to the processing end time of one of the processing machines of A and B, the processing progress on both the processing machines of A and B is sufficiently reflected. be able to.

Here, in addition to the configurations of (2-1) to (2-3), it is desirable to further include the following configurations.
(2-4) Each of the same-type processing machines is provided with a processing end notification means for notifying that when the processing ends.
(2-5) A distribution history storage unit that stores a result of distribution by the distribution unit as a history is provided.
(2-6) The processing remaining number calculating means calculates each processing end time from processing data of the material to start processing and information on each processing capability of the same type processing machine, and stores the distribution history storage From the distribution history stored in the means, the processing data of the material corresponding to the history, the status of each notification from the processing end notification means, and information on each processing capability of the same type processing machine, It is configured as means for calculating the number of remaining machining pieces in consideration of the processing progress of the processing machine on the side for calculating the number.

  Here, the said prediction can be performed more correctly by providing also the structure of (2-4)-(2-6).

  As described above, according to each invention of the present application, a serial or parallel processing line including a plurality of processing machines capable of performing the same processing by predicting the transition of the number of remaining processing with respect to the processing machine and executing the distribution. In either case, the total machining time can be shortened by leveling the load on each processing machine.

[First Embodiment]
Next, a first embodiment of the present invention will be described. The first embodiment is an example of a serially arranged horizontal member processing line 100 as shown in FIG. In this horizontal material processing line 100, from the upstream side, the material storage conveyor 101, the input conveyor 102, the upper and lower side surface processing machine 103, the takeout conveyor 104, the storage conveyor 105, the input conveyor 106, the upper and lower side surface processing machine 107, and the removal A conveyor 108, a storage conveyor 109, a loading conveyor 110, a kerf processing machine 111, a removal conveyor 112, a storage conveyor 113, a loading conveyor 114, a kerf processing machine 115, a removal conveyor 116, and a processed material storage conveyor 117 are provided.

  Here, the upper and lower side surface processing machine 102 on the upstream side includes a cross-cut saw in addition to the upper and lower side surface processing axes. The upper and lower surface processing machines 107 on the downstream side are provided with upper and lower surface processing axes, but are not provided with a cross-cut saw. Therefore, in this embodiment, the following two processing methods can be implemented.

[First processing method]
Only the upper and lower side surface processing machine 103 performs cross-cutting, and the upper and lower side surface processing is performed by the downstream upper and lower surface processing machine 107.
[Second processing method]
Cross cutting and top / bottom side surface processing are performed by the upper / lower surface processing machine 103 on the upstream side, and the upper / lower surface processing machine 107 on the downstream side is passed. In addition, the upstream side chamfering machine 111 executes machining of the right end portion, and the downstream side chamfering machine 115 executes processing of the left end portion, and the mounting directions of the machining axes are different from each other. No sort is done.

  Next, a method of distributing the upper and lower side surface processing in this embodiment will be described. First, the configuration of a control system for realizing this distribution method will be described with reference to FIG.

  In the present embodiment, the processing machines 103, 107, 111, and 115 are NC controlled by the sequencers 103a, 107a, 111a, and 115a, respectively. Further, a control device 120 that transmits data to each of the sequencers 103a, 107a, 111a, and 115a is provided. This control device 120 reads machining data created for each house using CAD, converts it into NC data, and transmits NC data and material transport data to the sequencers 103a, 107a, etc. according to the upper and lower surface side machining distribution program described later. Send. Further, each sequencer 103a, 107a, etc. executes material loading / unloading and processing by each conveyor 101, 102, etc., according to the NC data and material conveyance data received from the control device 120. Each sequencer 103a, 107a, etc. transmits an end signal to the control device 120 at the end of machining. Note that a material having a dimension corresponding to a material input order determined by processing data created by CAD is input to the upstream material input conveyor 101 by an operator.

  Next, the content of the control processing by the upper and lower surface side processing distribution program executed by the control device 120 will be described based on the flowchart of FIG. When it is time to take in the material from the material storage conveyor 101 (S10: YES), the control device 120 reads data for processing the material (S20), and processes the upper and lower side surfaces to the upstream upper and lower side surface processing machines. In order to determine whether to perform the process at 103 or the downstream upper / lower surface processing machine 107, the following calculation is executed.

  First, the processing end time T1fin when the upper and lower side surface processing of the material is directly executed by the upstream upper and lower side surface processing machine 103 is calculated (S30). Next, the processing remaining number Nw on the storage conveyor 105 at the processing end time T1fin is calculated (S40). Then, it is determined whether the remaining machining number Nw calculated in S40 is equal to or less than a set value V (S50). If the value is equal to or lower than the set value V (S50: YES), data for processing the upper and lower surfaces of the material is transmitted to the sequencer 107a of the upper and lower surface processing machine 107 on the downstream side (S60), and the transmission history is also transmitted. Is stored (S65). On the other hand, when the set value V is exceeded (S50: NO), NC data for processing the upper and lower surface sides of the material is transmitted to the sequencer 103a of the upstream upper and lower surface processing machine 103 (S70).

  The control device 120 executes the sorting of the upper and lower side surface processing by repeating the above processing. Here, the set value V is a sufficiently small value (for example, 50% or less of the storage capacity, more preferably 40% or less of the storage capacity) with respect to the storage capacity of the storage conveyor 105 immediately before the downstream upper / lower surface processing machine 107. More preferably, a value of 30% or less is set. Since distribution control is not performed except for the upper and lower side surface processing, the data for cross-cutting is transmitted to the sequencer 103a, and the data for the end cutting is transmitted to the sequencers 111a and 115a. This is because the processing time of the horizontal member is averaged for the horizontal member of one house, and generally the upper and lower side surface processing takes the most time, so the upper and lower side surface processing is distributed to a plurality of processing machines. This is because the effect of shortening the total machining time is sufficiently exhibited.

  The machining end time T1fin when machining by the upstream machine 103 in S30 is calculated from the data relating to the machining capability of the machine 103 and the machining data. Note that the following information is input in advance to the control device 120 as data relating to the machining capability necessary to calculate the machining end time T1fin.

(1) Time including the acceleration / deceleration time calculated from the operation speed and operation distance of each axis for machining (2) Operation time of material clamping and unclamping (3) Calculation from material movement speed and distance (4) Time required for material loading and unloading (5) Time required for each timer for control timing (6) Correction time for each operation such as time increase due to slipping during material movement

  In calculating the machining end time T1fin, the time (1) is taken to include the longer time when a plurality of machining axes operate simultaneously. The operating time of the hydraulic cylinder for clamping is used as the operating time of (2). In addition, acceleration / deceleration time is also taken into account for the travel time of (3). Further, for the time of (4), the operating time of the intake / removal pneumatic cylinder is used.

  Next, the details of the calculation procedure of the remaining machining number Nw in S40 will be described. As shown in FIG. 4, the control device 120 sets, as an initial value, a value obtained by subtracting 1 from the total transmission number Ntotal from the transmission history to the sequencer 107a of the downstream processing machine 107 (Nw = Ntotal-1; S110). ). Next, the number Nfin of receptions of the processing end signal received from the sequencer 107a is subtracted (Nw = Nw−Nfin; S120). As a result, the number Nw of remaining processing of the downstream upper and lower side surface processing machine 107 at the present time is obtained. Note that subtracting 1 from the total number Ntotal in setting the initial value is due to the fact that there are materials that have been taken into the downstream upper and lower surface processing machine 107 and have started processing.

  Next, data that is traced back by the number Nw of remaining machining from the latest one in the transmission history is read (S130), and the time T2fin at which the processing corresponding to the data ends on the downstream upper and lower surface processing machine 107 is calculated. (S140). This processing end time T2fin is similar to the method of calculating the processing end time T1fin when processing is performed by the upstream upper and lower surface side processing machine 103 in S30, and data regarding the processing capability of the downstream upper and lower surface processing machine 107. Calculated from machining data. Therefore, the data (1) to (6) necessary for this calculation are also stored in advance for the upper and lower surface processing machine 107 on the downstream side.

  Next, the processing end time T2fin when the downstream upper and lower side surface processing machine 107 calculated in S140 is used, and the processing end time T1fin when the upstream upper and lower surface processing machine 103 calculated in S30 is used. (S150), and if the time of T2fin is later (S150: later), the currently calculated number Nw of machining remaining is determined as a calculation result (S160).

  On the other hand, when the time is earlier in T2fin (S150: earlier), the number Nw of remaining machining is decremented (Nw = Nw-1; S170), and the process returns to S130. As a result, the time T2fin at which the downstream upper and lower side surface processing machine 107 finishes processing for the data transmitted next to the data used in the previous calculation is calculated. Finally, the determination in S150 is “slow”, and the calculation result of the remaining number of machining Nw is determined.

  Comparing only the cutting in the upstream upper and lower surface processing machine 103 with the processing of the joint and the like by the downstream upper and lower surface processing machine 107, in general, the processing of the joint takes more time. Therefore, normally, the number Nw of machining remaining increases gradually with occasional decrement, such as 0 → 1 → 0 → 1 → 2 → 3 → 2 → 3 → 4 → 5 → 6 → 5. To go.

  When Nw = V, the processing data is transmitted to the sequencer 103a of the upstream upper and lower surface processing machine 103, and the upstream upper and lower surface processing machine 103 performs not only cross-cutting but also upper and lower surface processing. Executed. During this time, the processing on the upper and lower surface processing machine 107 on the downstream side proceeds, and the number Nw of remaining processing on the storage conveyor 105 decreases. In addition, in terms of appearance, the material on which the upper and lower side surface processing machines 103 have performed the upper and lower side surface processing is also placed on the storage conveyor 105, but as described above, processing is performed based on the transmission history. Since the remaining number Nw is calculated, the processed material is not included in the processed remaining number Nw.

  By executing the control process as described above, an appropriate number of materials are stored on the storage conveyor 105 between the upstream upper / lower surface processing machine 103 and the downstream upper / lower surface processing machine 107. Thus, the upper and lower surface side processing by both the processing machines 103 and 107 is performed in parallel.

  Here, in the present embodiment, the reason why the material processed on the upper and lower side surfaces using the upper and lower side surface processing machines 103 on the upstream side is not included in the processing remaining number Nw of the storage conveyor 105 is the both processing machines 103 and 107. This is for the purpose of optimizing the load on the machine. The set value V is set to be sufficiently small with respect to the storage capacity of the storage conveyor 105, so that the storage conveyor 105 does not become full even if such a calculation is made. When the actual number of materials stored in the storage conveyor 105 reaches the storage capacity, the actual number of materials stored in the storage conveyor 105 is managed by another program, and is close to the storage capacity. When the set value is reached, the storage capacity can be prevented from being exceeded by performing a process of temporarily waiting for the next material to be taken in.

  Thereby, in this embodiment, shortening of the total machining time due to the provision of the two upper and lower side surface processing machines 103, 107 is effectively achieved while leveling the processing load of each processing machine 103, 107. Can do. Therefore, the utilization factor of equipment is high and the effect of shortening the total machining time is exhibited. In addition, problems that may newly occur due to this can be avoided by setting the set value V sufficiently small.

  In addition, according to the present embodiment, when a new material is thrown in, distribution determination is performed, and confirmation by a processing end signal from the sequencer is also performed, so processing such as manual stop is performed on the downstream processing machine. In such a case, an effect that contributes to shortening the total machining time by effectively using the upstream processing machine is also exhibited.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. The second embodiment is an example targeting a parallel material processing line 200 having a parallel arrangement as shown in FIG. The horizontal material processing line 200 includes a material storage conveyor 201, a cross cut saw 202, and a branch conveyor 203 from the upstream side, and a storage conveyor 204A, an input conveyor 205A, and upper and lower side surface processing machines 206A downstream of the branch conveyor 203. , A conveyor line 207A, storage conveyor 208A, input conveyor 209A, cleaver 210A, extraction conveyor 211A, storage conveyor 204B, input conveyor 205B, upper and lower side surface processing machine 206B, extraction conveyor 207B, storage conveyor 208B , A transfer conveyor 209B, a K-side processing machine 210B, and a B-side line made up of a take-out conveyor 211B. As a final stage, a horizontal transfer conveyor 212 that horizontally transfers the processed material from the A-side line in the direction in which the B-side line exists. , From B side line to the lateral transfer conveyor 212 and merging conveyor 213 for vertically transferring the processed material, it is provided and machined material accumulating conveyor 214.

  Here, the upper and lower side surface processing machines 206A and 206B and the end processing machines 210A and 210B of the A side line and the B side line all have the same function. Therefore, in the present embodiment, the material that has been fully cut by the cross-cut saw 202 can be processed in two ways: a method for processing on the A side and a method for processing on the B side.

  Next, the processing distribution method in this embodiment will be described. First, the configuration of a control system for realizing this distribution method will be described with reference to FIG. In this embodiment, each processing machine 202, 206A, 206B, 210A, 210B is NC-controlled by the sequencer 202a, 206Aa, 206Ba, 210Aa, 210Ba, respectively. In addition, a control device 220 that transmits data to each of these sequencers 202a, 206Aa, 206Ba, 210Aa, and 210Ba is provided. This control device 220 reads machining data created using CAD for each house, converts it into NC data, and sends NC data to the A side or B side sequencers 206Aa, 206Ba, etc. according to the machining distribution program described later. Send material transport data. In addition, each sequencer 206Aa, 206Ba, etc. executes material loading / unloading and processing by each conveyor 205A, 205B, etc., according to the NC data and material conveyance data received from the control device 220. Each sequencer 206Aa, 206Ba, etc. transmits an end signal to the control device 220 at the end of processing. Note that a material having a dimension corresponding to the material input order determined by the processing data created by CAD is input to the material input conveyor 201 at the most upstream by the operator.

  Next, the content of the control processing by the processing distribution program executed by the control device 220 will be described based on the flowcharts of FIGS. When it is time to fetch the material from the material storage conveyor 201 (S210: YES), the control device 220 reads data for processing the material (S220), and processes the upper and lower side surfaces to the upper and lower side surface processing machines on the A side. In order to determine whether to perform the process at 206A or the B-side upper / lower surface processing machine 206B, the following calculation is executed.

  First, a processing end time TAfin when the material is processed on the processing line 206A on the A side is calculated (S230). Next, the processing remaining number NwB on the B-side storage conveyor 204B at the processing end time TAfin calculated in S230 is calculated (S240). Then, it is determined whether or not the number NwB of remaining machining is equal to or less than the set value VB (S250).

  If NwB ≦ VB (S250: YES), next, a processing end time TBfin when the material is processed on the processing line 206B on the B side is calculated (S260). Next, the processing remaining number NwA on the A-side storage conveyor 204A at the processing end time TBfin calculated in S260 is calculated (S270), and it is determined whether this processing remaining number NwA is equal to or less than the set value VA (S280). .

  If NwA ≦ VA (S280: YES), the remaining machining number NwB calculated in S240 is compared with the remaining machining number NwA calculated in S270 to determine whether NwA ≧ NwB is satisfied (S290). If the determination result is “YES”, the material to be captured this time is distributed to the processing line on the B side (S300) and stored as a B-side transmission history (S310). On the other hand, if “NO” is determined, the material to be captured this time is distributed to the processing line on the A side (S320) and stored as the A-side transmission history (S330).

  On the other hand, if the determination in S250 is NO (NwB> VB), the same calculation as in S260 to S280 is executed (S360 to S380). If NwA ≦ VA (S380: YES), the process proceeds to S320, and this time, The material is distributed to the processing line on the A side (S320) and stored as an A-side transmission history (S330).

  On the other hand, if the determination in S280 is NO (NwA> VA), the process proceeds to S300, where the material to be captured this time is distributed to the processing line on the B side (S300) and stored as the B side transmission history (S310).

  If S380 is NO, the process waits until a processing end signal is input from one of the sequencers 206Aa and 206Ba (S390), and then returns to S230.

  Here, in this embodiment, the number NwA and NwB of processing remaining in each of the storage conveyors 204A and 204B coincides with the actual number of stored materials. Therefore, since the set values VA and VB may be set to have a larger ratio to the storage capacity than the set value V of the first embodiment, the set values VA and VB are over the storage capacity of the storage conveyors 204A and 204B. The number of products multiplied by a predetermined safety factor is set.

  The control device 220 repeats the above processing to execute the material distribution to the processing lines on the A side and the B side arranged in parallel.

  The machining end times TAfin and TBfin in S230 and S250 are calculated from the data related to the machining capability of the upper and lower surface processing machines 206A and 206B and the machining data, as in the process of S30 of the first embodiment. For this reason, the control device 220 stores data on the processing capabilities (1) to (6) described in the first embodiment for each of the upper and lower surface processing machines 206A and 206B.

  Next, the details of the calculation procedure of the remaining machining number NwB in S240 will be described. As shown in FIG. 9, the control device 220 sets, as an initial value, a value obtained by subtracting 1 from the total number NBtotal transmitted from the transmission history to the sequencer 206Ba of the B side upper and lower surface processing machine 206B (NwB = NBtotal). -1; S410). Next, the number of receptions NBfin of the processing end signal received from the sequencer 206Ba is subtracted (NwB = NwB-NBfin; S420). As a result, the remaining number of machining NwB for the upper and lower surface processing machine 206B on the B side at the present time is obtained. Note that subtracting 1 from the total number Ntotal in setting the initial value is due to the fact that there are materials that have started processing among the fed materials.

  Next, data that is traced back by the number of remaining machining pieces from the latest in the B side transmission history is read (S430), and the time TBfin at which the B side upper / lower surface processing machine 206B finishes the machining corresponding to the data is calculated. (S440). This processing end time TBfin is the same processing as S260.

  Next, the processing end time TBfin when using the B side upper and lower surface processing machine 206B calculated in S440, and the processing end time TAfin when using the A side upper and lower surface processing machine 206A calculated in S230. (S450), and if TBfin is later in time (S450: later), the currently calculated machining remaining number NwB is determined as a calculation result (S460).

  On the other hand, if TBfin is earlier in time (S450: earlier), the number NwB of remaining machining is decremented (NwB = NwB-1; S470), and the process returns to S430. As a result, the time TBfin at which the upper and lower side surface processing machine 206B on the B side finishes processing for the data transmitted to the B side next to the data used in the previous calculation is calculated. Finally, the determination in S450 becomes “slow”, and the calculation result of the remaining number of machining NwB is confirmed.

  As shown in FIG. 10, the calculation procedure of the number NwA of remaining machining in S270 is also configured in the same manner as the processing of S410 to S470 described above (S510 to S570).

  By executing the control process as described above, the processing is performed so that both the processing lines on the A side and the B side are always operated and the operation end times substantially coincide. Therefore, the utilization factor of equipment is high and the effect of shortening the total machining time is exhibited.

  In the present embodiment, the upper and lower side surface processing machines 206A and 206B of both the A and B processing lines are equipped with a cross-cut saw like the upstream upper and lower surface side processing machine 103 in the first embodiment. When cutting and processing a plurality of horizontal members from a single long material, the cross-cut saw 202 does not perform cutting, but also performs cutting on the upper and lower surface processing machine where the material has been flown. Take the book. Accordingly, when calculating the above-described machining end time, in the case of multiple cutting, the time at which all the machining operations for multiple cutting are completed is calculated.

  Also in this embodiment, when a new material is thrown in, the sorting determination is executed and the confirmation by the processing end signal from the sequencer is also executed, so that processing such as manual stop is executed on one processing machine. In such a case, the effect of contributing to the shortening of the total processing time by effectively using the other processing machine is also exhibited.

  As mentioned above, although embodiment of this invention was described, this invention is not restricted to these embodiment, In the range which does not deviate from the summary, it can implement in a various aspect.

  For example, in the horizontal material processing line of the first embodiment, the material to be processed by the upper and lower surface processing machine 107 and the upper and lower surface processing machine 103 already processed on the storage conveyor 105 and the upper and lower surface processing machine 107 are processed. The material which is not processed is mixed. Therefore, in the calculation of the processing end time, it is also possible to consider the passage time of the material that only passes through the upper and lower surface processing machines 107.

  In addition, the start timing of the calculation processing for sorting may be a predetermined timing when starting material processing, such as when material cutting is performed instead of when the material is input.

It is a top view which shows the structure of the processing line of 1st Embodiment. It is a block diagram of the control system of 1st Embodiment. It is a flowchart of the distribution determination process of 1st Embodiment. It is a flowchart of the processing remaining number calculation process of 1st Embodiment. It is a top view which shows the structure of the processing line of 2nd Embodiment. It is a block diagram of the control system of 2nd Embodiment. It is a flowchart of the distribution determination process of 2nd Embodiment. It is a flowchart of the distribution determination process of 2nd Embodiment. It is a flowchart of the processing remaining number calculation process of 2nd Embodiment. It is a flowchart of the processing remaining number calculation process of 2nd Embodiment.

Explanation of symbols

[First Embodiment]
DESCRIPTION OF SYMBOLS 100 ... Horizontal material processing line 101 ... Material storage conveyor 102 ... Input conveyor 103 ... Upper and lower side surface processing machine 103a ... Sequencer 104 ... Extraction conveyor 105 ... Storage conveyor 106 ··············································································································································································································· Sequencer 112 ···························································································································································· Second Embodiment]
200 ... Horizontal material processing line 201 ... Material storage conveyor 202 ... Cross cut saw 202a ... Sequencer 203 ... Branch conveyor 204A, 204B ... Storage conveyor 205A, 205B ... Loading conveyor 206A , 206B... Upper and lower side surface processing machines 206Aa, 206Ba... Sequencer 207A, 207B... Take-out conveyor 208A, 208B .. Storage conveyor 209A, 209B. 210Aa, 210Ba ... sequencer 211A, 211B ... take-out conveyor 212 ... lateral transfer conveyor 213 ... confluence conveyor 214 ... processed material storage conveyor 220 ... control device

Claims (6)

A pre-cut processing system comprising the following configuration in a processing line including a plurality of similar processing machines capable of performing the same pre-cut processing on a material in a serial arrangement.
(1-1) The material storage means with respect to the downstream processing machine among the said same kind processing machines is provided.
(1-2) When starting the processing of a new material in the processing line, the downstream processing machine at the processing end time when the material is processed by the upstream processing machine of the same type of processing machines. A processing remaining number calculating means for calculating the number of remaining processing existing in the material storage means is provided.
(1-3) The processing remaining number of materials calculated by the processing remaining number calculating means is compared with a predetermined set value, and the processing is distributed to the downstream processing machine until the remaining processing number reaches the set value. When the number of remaining machining pieces reaches the set value, it is provided with a distribution means for executing the distribution of the processing to the upstream processing machine. The precut machining system according to claim 1, further comprising the following configuration.
(1-4) The processing machine on the downstream side is provided with a processing end notification means for notifying that when the processing ends.
(1-5) A distribution history storage unit that stores a result of distribution by the distribution unit as a history is provided.
(1-6) The processing remaining number calculating means calculates the processing end time from processing data of a material for starting the processing and information related to processing capability of an upstream processing machine among the same type of processing machines. In addition, the distribution history stored in the distribution history storage unit, the processing data of the material corresponding to the history, the status of notification from the processing end notification unit, and the downstream processing in the same type processing machine It is comprised as a means to calculate the said process remaining number in consideration of the progress of the process of the said downstream processing machine from the information regarding the processing capability of a machine. The precut machining system according to claim 2, further comprising the following configuration.
(1-7) The same type processing machine is an upper and lower side surface processing machine, and is continuously arranged as a processing machine, and the upstream type similar processing machine is provided with a cross-cut saw.
(1-8) When the sorting unit distributes the processing to the same type of processing machine on the downstream side, the same type of processing machine on the upstream side has a cutting control unit for sending the material downstream when cutting with a cross cut saw is performed. Be prepared. The pre-cut processing system according to claim 3, further comprising the following configuration.
(1-9) The set value is set to a value equal to or less than 50% of the storage capacity of the material storage means. A pre-cut processing system comprising processing lines each having the same type of processing machine capable of performing the same pre-cut processing on a material in parallel on the A side and the B side and having the following configuration.
(2-1) A material storage means is provided on the upstream side of each of the same type processing machines.
(2-2) When processing a new material in the processing line, the B side at the processing end time when the material is processed by the A-side processing machine among the parallel-type similar processing machines The remaining number of processings stored in the material storage means of the processing machine and the material storage means of the A-side processing machine at the processing end time when the material is processed by the B-side processing machine A processing remaining number calculating means for calculating the remaining processing number is provided.
(2-3) A distribution unit that compares the number of machining residues on the A side calculated by the machining remaining number calculation unit and the number of machining residues on the B side and distributes the machining to the side with the smaller number of machining residues is provided. That. The pre-cut processing system according to claim 5, further comprising the following configuration.
(2-4) Each of the same-type processing machines is provided with a processing end notification means for notifying that when the processing ends.
(2-5) A distribution history storage unit that stores a result of distribution by the distribution unit as a history is provided.
(2-6) The processing remaining number calculating means calculates each processing end time from processing data of the material to start processing and information on each processing capability of the same type processing machine, and stores the distribution history storage From the distribution history stored in the means, the processing data of the material corresponding to the history, the status of each notification from the processing end notification means, and information on each processing capability of the same type processing machine, It is configured as means for calculating the number of remaining machining pieces in consideration of the processing progress of the processing machine on the side for calculating the number.

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