JPS6237399A - Treatment of material to be treated in treatment line - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention relates to a processing line configured by consecutively disposing processing stations for performing various treatments, such as a surface treatment line for aluminum materials. The present invention relates to a preferred processing method for simultaneously conveying a plurality of sets of workpieces along the same line and selecting a processing station to perform a predetermined process on each set of workpieces.

For example, aluminum profiles are subjected to various surface treatments to provide corrosion resistance and decorative properties. Such treatments include water washing, degreasing, caustic treatment, anodizing treatment, electrolytic coloring or resin electrodeposition treatment, baking treatment, etc. Processing such as water washing or hot water washing may be performed between each treatment as necessary. be mediated. A typical example of these processing steps is shown in FIG.

It is not necessary to perform all of these various treatments. Furthermore, the treatment solutions used for anodizing treatment and resin electrodeposition may differ. However, it is not advantageous to install dedicated treatment lines depending on the materials to be treated. In particular, when handling a variety of materials to be processed in small quantities, it is extremely disadvantageous in terms of equipment costs and operating rates.

For this purpose, a common processing line that includes almost all processing stations for performing these processings is usually constructed.
Materials to be treated are passed through this line and the necessary treatments are selectively carried out.

In addition, in such a surface treatment line, when surface treating a relatively long and slender member such as an extruded aluminum section, a large number of workpieces are subjected to the same treatment on the beam 1, as shown in Figure 2. 2 is suspended and the entire beam 1 is transported to a processing station. Furthermore,
In the current general processing line of this type, multiple beams (for example, three) are used to increase the conveyance efficiency, that is, the processing efficiency.
are suspended and transported by the same transport vehicle 3. For this reason, the processing stations, such as processing tanks, are also correspondingly large.

Further, the processing time at each processing station usually differs depending on the difference in processing content.

Therefore, it is common practice to select the number of equipment to equalize the throughput in all processing stations. For example, at a processing station where the processing time is twice as long, the number of processing equipment is doubled, so that the flow of material to be processed does not stagnate at this processing station.

In the processing line configured as described above, conventionally, the materials to be processed are sequentially transported by a transport means in the order in which they are generally supplied to the line, and the required processing is selected. We are trying to implement it. That is, in the surface treatment of the aluminum profile mentioned above, a predetermined number of materials to be treated with the same processing contents (usually supplied in units of lofts) supplied to the treatment line are sequentially attached to the beam 1 to form a set of beam units. are formed one after another, and for materials to be processed in different lofts with different processing contents, beam 1 is exchanged to sequentially form a set of beam units with the same processing content, and these beams 1 are sent to the processing line in that order. The equipment will be placed on standby for delivery. Thereafter, in this waiting order, three beams each are attached to the same carrier and transported to the processing line.

Therefore, the following problems arise.

For example, as shown in FIG. 3, processing stations 10 to 15 with different processing contents are successively arranged, and each of processing stations 10 to 13.15 can simultaneously process three beams of materials to be processed. Station 14 is 1
Assume that only one beam unit of the material to be processed can be processed at a time. Furthermore, two types of material groups A and B (beam units) are carried into this line, and material group A is processed by processing stations 10 to 13.15, and material group B is processed. Assume that processing by stations 10-12.14 and 15 is scheduled. In such a case, if the group A of materials to be processed is continuously carried into the processing line, three beams may be attached to the transport vehicle and each of the beams may be processed simultaneously by each of the processing stations 10 to 13.15.

The transport route in this processing step is indicated by arrow a.

However, if a small number of processed material groups B that undergo different treatments are mixed and supplied in the middle of this processed material group A, then if three beams for processed material groups B are attached to this transport vehicle, then the beams of three processed material groups B are simultaneously supplied. Only one of the three transported beams is processed at the processing station 14, and the materials to be processed in the remaining two beams must wait until this processing is completed. If this processing station 14 is a steel station that is rarely used and therefore has a small number of equipment, it is assumed that the processing station 14 processes a variety (material group A) for this rarely processed variety (material group B). productivity,
This will reduce the operating rate.

For this reason, it is not a good idea to increase the number of processing stations 14. Furthermore, if the processing station 14 is equipped with a small number of equipment because the processing time is short, even if the processing station 14 is processed one by one sequentially, the efficiency will not be reduced in terms of total time. However, the time from the end of the pre-processing to the start of processing at the processing station 14 is different for the three beams. This difference causes a difference in the processing results and causes a change in color tone, for example.

Therefore, in any case, in this processing line, it is not preferable to transport the three beams of the group of materials to be processed B using the same transport vehicle.

The above is a basic example to explain the shortcomings of the conventional technology; in reality, various situations occur, and in each case, it is best handled by changing the order of the beam units to be transported. This will give you a state where you can do it. However, in reality, it takes a lot of time to replace dies in the production of extruded shapes, and initial defective products occur each time, which is uneconomical, so a large number of shapes are produced continuously. and processed. Therefore, when producing these materials, it is actually impossible to replace the dies so as to distribute and insert other types of shapes in the middle.

In view of the above, the object of the present invention is to
It is an object of the present invention to provide a processing method that can maintain high operating efficiency of a processing line.

溌yIυi叉The present invention stores in advance in a control device the processing contents of a set of beam units of the processing material supplied to the processing line,
The control device is characterized in that it calculates the optimum transport combination order based on the information, and can change the transport order of each beam as necessary.

More specifically, the position immediately before being transported to the processing line,
or a position immediately after or intermediate to one or more processing stations that are involved in the initial processing that is common to all the processed materials supplied to the processing line;
A temporary stock station is provided in at least one of the positions of The control device calculates a preferable combination of materials to be processed to be carried in together by the conveyance means based on the processing contents stored in the controller, and the order in which the materials to be processed are sequentially supplied is determined based on the calculation result of the preferable combination. The control device determines the material to be processed by evacuating the material to be processed that is determined to be necessary for changing the processing material to the temporary stock station, and sequentially returning the material to be processed that has been evacuated to the temporary stock station. The combination is characterized in that the conveying means carries the materials to be treated together into the treatment line.

Examples of the method of the present invention will be described below with reference to the drawings.

Implementation ■ Figures 4 and 5 show the starting part of the treatment line in the surface treatment of aluminum profiles as an example, with reference numeral 2.
0 indicates the input loss region of the processing line, and the material to be processed 2
A conveyance line is connected so that the material is first supplied onto the rotating table 21. The supplied material 2 to be processed is operated so that one end thereof can be attached to the beam 1 which is placed on standby on the racking device 22 . The rotating table 21 is capable of rotating clockwise around a rotating shaft 23, and this rotation creates a state in which the workpiece 2 is suspended with the beam 1 facing upward, and in this state it is connected to the conveyance line. The beam 1 can be delivered to the receiving section 24. Further, reference numeral 25 indicates a station where the empty beam from which the processed parts have been removed after finishing the processing is returned to wait for rough kinging for the next processing. However, since these are not related to the present invention, they will not be described in detail.

As shown in FIG. 6, the receiving section 24 is provided on a truck 30, and this truck 30 is arranged so as to be movable left and right in the figure. As shown in FIG. 7, a roller conveyor 31 is provided in association with the truck 30 and extends in the direction of movement of the truck. In these cases, the trolley 30 is shown in FIGS.
After the beam 1 on the receiving part 24 is locked in the state located at the left end in the figure, the cart moves rightward in the figure and pulls the beam 1 to the right with the end member 25. The roller conveyor 31 takes over the rightward movement. roller conveyor 31
The upper beam 1 is stopped in position by a suitable stop.

The beam 1 thus placed on standby on the roller conveyor 31 is then held at both ends by a carrier 3 as shown in FIG. In this case, holding parts for the beams 1 are arranged side by side on the carrier 3 so that three beams 1 can be hung thereon. In this way 3
The beams 1 suspended one by one are sequentially sent in the direction of arrow A and processed.

According to a feature of the invention, a waiting station 40 is provided at a location associated with the receiving section 24, the trolley 30 and the roller conveyor 31. This standby station 40 includes a pair of lids 41 on both sides, and the lifters 41 can be driven up and down along a pedestal 42 extending in the vertical direction, as shown in FIG. This lifter 41 has a pair of hooks 43, by which a bottle at the end of the beam 1 is hooked and lifted. The lifter 41 is normally placed at a position where it does not interfere with the beam 1 conveyed by the receiving section 24, the trolley 30, and the roller conveyor 31, but when the beam 1 is conveyed, which requires temporary standby to change the order. When the beam 1 is moved, it can engage with the beam 1 and move it upward.

A standby mechanism 45 having a structure similar to that of the receiving section 24, the cart 30, and the roller conveyor 31 is disposed above the standby station 40. This standby mechanism 45, similar to the receiving section 24, holds the beam 1 lifted by the lifter 41 on a roller conveyor similar to the roller conveyor 31 and makes it standby.

Although the processing line following such an input loss section 20 is not shown here, processing stations are continuously provided as shown in FIG. The material to be processed 2 that can be suspended can be placed into the station. Such a configuration is known and will not be described in detail.

According to the processing line equipped with the standby station 40 as described above, the continuously supplied materials 2 to be processed are sequentially attached to predetermined beams 1.

Further, the processing details of the material to be processed in units of beams are given to the control device. Beam 1 with workpiece 2 attached in this way
are given to the receiving section 24 one after another, and the beam 1 is stopped and held on the roller conveyor 31 in this order, waiting to be hoisted up by the transport carriage 3. If it is preferable for the truck 3 to lift and transport three beams 1 at a time in this order, this is carried out as is.

However, it is assumed that the groups A and B of beam units of the material to be processed as described in connection with FIG. 3 are supplied in the order shown in FIG. 9A. In this case, as shown in FIG. 3, the station 14 for processing the group B of materials to be processed can only process one beam at a time. Therefore, if AAA is moved by one transport vehicle 3 and then the three beams 1 are subsequently transported in that order as shown in the opening of FIG. 9, the combination will be BBB, which is not preferable. As shown in FIG.
(It is sufficient if only one B is inserted). According to this combination, two AAs are station 1
One B is station 1 when opened while being processed at 3.
It can be processed in 4. Next, as shown in FIG. 9-2, any one of the B's on standby is lowered by the lifter 41, preferably in the order in which they were carried in, to obtain a combination of AAB along with the following two AA's. This combination is also processed in the same way as described above. Furthermore, as shown in FIG. 9E, B, which had been waiting until the end with <AA, is lowered by the lifter 41 to form a group. In this way, the groups of materials to be processed, which were initially brought in consecutively for both A and B, are rearranged in a preferred order.

Such a preferable order is calculated based on the processing content given to the control device and the configuration of the processing line. The content of such calculations is arbitrary and can be easily performed using a well-known method, so a detailed description thereof will not be given.

In addition, if it is undesirable that the order after processing is changed from the original order, a similar waiting station can be set up in connection with the output loss station, and the order can be changed again using the same control. It is possible to restore the order.

The above description simply explains the features of the present invention, and the control contents can be changed in various ways. In any case, the feature of the present invention is that by providing a standby station, the actual processing order can be changed to the most preferable order while performing operations similar to conventional work, and furthermore, this order can be changed again after processing. The goal is to restore the original order. Therefore, there is no need to particularly modify the existing management contents of the material to be processed, and it is sufficient to simply provide a standby station, determine the beam to be held on standby, and then send it to the standby station.
It can be easily applied to existing equipment.

Although the present invention is preferably applied to a surface treatment line, it can be applied to any other treatment line.

Mata plate ■ Aphrodisiac ■ Processing efficiency in the processing line can be maximized.

(2) By applying the present invention, the configuration of a common processing line becomes extremely easy, and less processing equipment is required.

■ As a result, equipment costs can be reduced.

■ Interrupt processing can be easily performed.

[Brief explanation of the drawing]

FIG. 1 is an explanatory block diagram showing processing steps as an example to which the present invention is applied. FIG. 2 is a schematic front view showing a vertically suspended state of the beam to which the present invention is applied. FIG. 3 is an explanatory diagram showing that the beam conveyance differs depending on the processing content. FIG. 4 is a schematic plan view of an example of an apparatus for carrying out the treatment method of the present invention. FIG. 5 is an elevational view of the apparatus of FIG. 4. FIG. 6 is a schematic partially enlarged elevational view showing the truck in FIG. 5; FIG. 7 is a schematic partially enlarged elevational view showing the roller conveyor in FIG. 5; FIG. 8 is a schematic partially enlarged perspective view showing the lifter in FIG. 5. FIG. 9 is an explanatory diagram showing an example of changing the order in which materials to be processed are brought in. A, B... Material to be processed 1... Beam 2... Material to be processed 3... Transport vehicles 10 to 15... Processing station 20... Incoming loss cution 21... Rotating table 22... -Ranking station 24...Receiving section 25...Waiting station 30...Dolly 31...Roller conveyor 40...Waiting station 41...Lifter 42...Base 43...Hook 45...・Standby mechanism ■AABβBAAA- ■・AAAAsss5 self-sit page continuation

Claims (1)

[Claims] (1) A plurality of sets of materials to be processed are carried together by a conveyance means into a processing line consisting of a plurality of processing stations arranged in succession, and preset settings are set for each set of materials to be processed. In a processing line that is selectively fed to a predetermined processing station in order to carry out processing, the position immediately before being carried into the processing line, or all the processed materials supplied to the processing line. A temporary stock station is provided at at least one position immediately after or intermediate to one or more processing stations that are involved in the initial processing in which the material is commonly carried out, and the temporary stock station is sequentially supplied to the processing line. The control device stores in advance processing contents set in advance for each of the processing materials to be processed, and based on the processing contents stored in advance, the preferable combination of processing materials to be carried together by the conveying means is selected as described above. A control device performs calculations, and based on the calculation result of the optimal combination, the materials to be processed that are determined to be necessary in order to change the order in which the materials to be processed that are successively supplied are evacuated to the temporary stock station. the materials to be treated that have been temporarily evacuated to the stock station are sequentially returned, and the materials to be treated are combined into the combination determined by the control device, and the conveying means transports the materials to be treated together to the processing line. A method for processing a material to be processed in a processing line, the method comprising steps.