JPS61243200A - Method and apparatus for transferring empty beam in surface treatment device - Google Patents

Abstract

PURPOSE:To reduce the transfer time for empty beams and to minimize the wasteful dead beams by transferring stepwise the empty beams from a final station to an initial moving station via an idle station. CONSTITUTION:This surface treatment device executes treatments such as degreasing, rinsing, electrolyzing and dyeing by mounting materials to be treated to the empty beams positioned to the initially moving station 4 in a mounting station 2 and transferring successively the beams to plural treatment tanks 1a-1n. The materials to be treated and removed from the beam in a removing station 3 after the end of the treatment and the empty beam is positioned to the final station 5. The empty beam is then transferred to the intermediate idle station 6 and is then transferred to the above-mentioned station 4. The transfer of the above-mentioned empty beams is executed by holding respectively simultaneously the empty beams positioned in the final station 5 and the idle station 6 by holding means and conveying synchronously the empty beams to the idle station 6 and the initial moving station 4 respectively.

Description

[Detailed Description of the Invention] The present invention relates to a surface treatment device that transports a plurality of aluminum shapes by suspending them from a beam, and sequentially performs a series of surface treatments such as degreasing, water washing, and electrolytic treatment. In particular, the present invention relates to a method and apparatus for transferring an empty beam for recirculating the empty beam after removing processed material to an initial station for processing unprocessed material.

(2) Such surface treatment equipment is automated so that a series of treatments can be carried out automatically, and a large number of treatment tanks can be sequentially rotated to selectively perform necessary treatments. More specifically, in order to increase productivity, it is generally possible to suspend a large number of materials to be treated on one beam, and accordingly, each treatment tank is also very large. In addition, various types of treatment tanks are installed so that many required treatments can be carried out with a common surface treatment equipment, making it possible to selectively carry out the treatments required for each material to be treated. It has become. Therefore, the workpiece is transported a considerable distance before the processing required of it is completed. If a straight processing line is used for this purpose, in order to return the empty beam after removing the processed material to the initial station for processing the unprocessed material, it is necessary to It would have to be transported over a very long distance. Therefore, the processing line is usually folded back in a U-shape so that the beam initial stage 9 and the final station are adjacent to each other.

Principle 1 Even if the initial beam station and the final beam station are placed adjacent to each other in this way, conventionally the empty beam was simply transferred from the final station to the initial station in one stroke. However, since the beam itself is a long member and is heavy, and the distance for returning the empty beam is long, it takes a considerable amount of time to return the empty beam. Therefore, in order to improve processing efficiency, for example to increase the total amount of workpieces that are being processed simultaneously in the processing equipment, the time interval between sending the beam to the processing equipment for processing may be shortened. In this case, the time required for this return transportation becomes a problem. In any case, it is preferable to shorten the time for this return transfer. This is because if the time taken for this return transfer is long, it becomes necessary to provide an extra beam and increase the number of so-called dead beams. In addition, conventionally, the attachment of unprocessed materials to the beam and the removal of processed materials have relied on humans, so shortening the return transfer time can improve the efficiency of these manual tasks. It is. Moreover, it is possible to eliminate bottlenecks in improving productivity by automating these tasks.

In view of the above, an object of the present invention is to provide a method and apparatus for transporting empty beams that can quickly return empty beams to the initial station for processing again without unduly increasing the number of dead beams. It is.゛ Departure! In the transfer method according to the present invention, the empty beam from which the workpiece has been removed after processing in the surface treatment apparatus for shapes, etc. is recirculated from the final station to the initial station in order to treat the unprocessed workpiece again. The method includes at least an initial station where the empty beam is positioned to start processing and a final station where the empty beam is positioned after the processed workpiece is removed. One idle station is provided, and the empty beam from the final station is first transferred to the idle station and then transferred to the initial station, so that the empty beam is initially activated through a stepwise transfer process from the final station through the idle station. It is characterized by being transported to a station.

The device according to the invention for realizing this also comprises an initial station in which the empty beam is located for the start of the process;
An idle station is provided at an intermediate position between the final station where the empty beam is placed after the processed material is removed, and the empty beams placed at the final station and the idle station are each detachably held. The empty beam is driven back and forth with a stroke half the distance between the initial station and the final station, and the empty beam is held at the final station and the empty beam is held at the idle station. It is configured to include a conveyance device adapted to simultaneously convey the images to and from.

The invention will be explained in more detail below with reference to preferred embodiments according to the invention.

Figure 1 shows the basic concept of the transfer method according to the present invention, where 1 aslbs...In shows various surface treatment tanks for aluminum treated materials, such as degreasing tanks, washing tanks, and electrolytic tanks. , a coloring treatment tank, etc. Although the materials to be treated are not shown in the figure, they are suspended in large numbers on beams oriented to cross the treatment tank in the horizontal direction in the figure, and are conveyed as indicated by the arrows, and are transported within the prescribed processing required for the materials to be treated. Immersed and selectively processed. The beams are sent out to the processing steps one after another, and in order to ensure efficient processing, in some cases, the materials to be processed from the preceding beams are transferred in the processing tank, overtaking them during processing. Further, an appropriate number of treatment tanks for the same treatment are provided, so that the same treatment as that of the material to be treated by the preceding beam can be performed.

This processing line is folded back into a U-shape, and the beam is transported laterally at the transport portion at the bottom of the U-shape. Conveyance along these arrows simply indicates the conveyance of the beam between processing tanks. For example, the transport of the processing tank required for the material being suspended by each beam is based on the processing content preset by the control panel. Selection and processing times are controlled.

A station 2 for attaching a workpiece and a station 3 for removing a workpiece are respectively stations for attaching an unprocessed workpiece to the beam and removing a treated workpiece from the beam.

Reference numerals 4 and 5 designate the stations described in the specification as the initial station and the final station, respectively, i.e. the initial station 4 is here attached to the position for which the beam is supplied to the station 2. 2, and the unloading station 3 indicates a stage where the beam is finally positioned after the processed workpiece is removed.

As a feature of the present invention, an idle station 6 is provided between the initial motion station 4 and the final stage tongue 5. Although a plurality of idle stations 6 can be provided depending on the interval between the initial station 4 and the final station 5, only one idle station 6 is shown here.

According to the empty beam transfer concept of the present invention, the empty beam located at the final station is first transferred to the idle station 6, and then transferred from the idle station 6 to the initial station 4. This transfer is carried out in stages in two steps. Of course, if idle stations are provided in multiple stages, the number of transfer stages increases accordingly.

Transferring the empty beam in stages in this way shortens the distance F['i, distance from which the empty beam is transferred from the idle station 6 to the initial station 4, thereby shortening the time interval for supplying the empty beam to the initial station I. intended to be shortened. That is, even if, for example, the time interval between sending the processed material to the processing line is shortened, this can be sufficiently accommodated. In the illustrated embodiment, the empty beam located at the idle station 6 becomes a dead beam for a period of time corresponding to one sending out. That is, by simply limiting the number of inactive empty beams in this processing device to one, the time interval for supplying the empty beam to the initial stage cylinder can be shortened by half. This effect is extremely effective in improving productivity.

FIGS. 2 and 3 show an example of a preferred transfer device including the above-described idle station 6 for transferring the material to be processed from the final station to the initial station. This transfer device includes a transfer section in which two frame members IO are linearly connected to each other by a connecting section 11. Each frame member 10 has a length corresponding to the transporting beam 12, as shown in FIG. 2, and has oppositely pivoting hooks 13 attached near its ends by pivots 14. This hook 13 is connected to the beam 1 as shown in FIG.
The beams 12 are pivoted as a pair to the frame member 10 at a spacing slightly wider than the width of the beam 12 so as to engage laterally projecting bins 15 attached to both ends of the beams 12, respectively. The hooks 13 at each end of the frame member IO are driven by an electric actuator 16, here mounted on the frame member 10, through a lever 17 and a connecting rod 18 in directions simultaneously moving away from and approaching each other. It has become. The electric actuator 16 of each frame member 10 (
(only one of which is shown) is energized and controlled so that they both operate simultaneously. Furthermore, wheels 50 are attached to both sides near the end of the frame member 10, and as shown in FIG. 52. The connection 11 is equipped with a drive motor 19 for making it possible to move together with the two frame members 10, here one through a suitable reduction gear 20 and a chain 21.
It is designed to drive two gears 22. This gear 22
As shown in FIG.
The gear 22 is engaged with a rack 53 provided on one side of the frame member 10, and the rotation of the gear 22 moves the conveying section consisting of the frame member 10 and the connecting section 11 as a whole. Further, the connecting portion 11 has wheels 50 similarly attached to both sides near both ends that engage with the rails 52, and furthermore, a pair of rollers 54 that engage with the lower surface of the section steel 51 and rotate on the lower side. ing. These rollers 54 float up while the connecting portion 11 is being driven, and the gear 22 and the rack 53
This prevents the mesh from disengaging. Furthermore, guide rollers 55 that rotate around a vertical axis are attached to the upper surface of the connecting portion 11, and these guide rollers 55 engage with the inner surface of the rail 52 to prevent rolling. ing.

The conveyance section of such a transfer device is constructed such that each frame member 10 separated by a connecting section 11 corresponds to the initial motion station 4 and the idle station 6 shown in FIG. The interval is determined to correspond to station 5.

With this configuration, the transport section is first positioned with one frame member IO corresponding to the idle station 6 and the other frame member IO corresponding to the final station. In this state, the electric actuator 16 is energized and controlled to maintain the empty beam located at each station. Thereafter, the driving motor 19 is energized to move the entire transport section, and the one frame member IO is made to correspond to the initial motion station 4 and the other frame member 10 is made to correspond to the idle station 6, and then stopped.

The electric actuator 16 is then energized to release an empty beam to each stator cylinder. By repeating this operation, a stepwise transfer of the empty beam from the final station 5 to the initial station 4 via the idle station 6 is performed. In this stepwise transfer, the empty beam is first sent from the final station 5 to the idle station 6 in the first transfer step, and from the idle station 6 to the initial station 4 in the next transfer step. The movement from the initial station 4 to the installation station 2 and from the removal station 3 to the final station 5 is suitably carried out in any known manner.

Coming to Higashi Higashijuku■ The time needed to transfer the air beam from the final station to the initial station can be cut in half by providing an idle station.

(2) Therefore, the time interval between sending to the processing line can be halved.

■ For this reason, even if the materials to be treated are attached and removed manually, work efficiency is not impaired.

■ It also becomes possible to automate and speed up these tasks.

■ Extra death beam can be minimized.

■ Can be easily applied to existing conventional surface treatment equipment.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram for showing the basic concept of the method of the present invention. FIG. 2 is a schematic elevational front view of an embodiment of a transfer device according to the invention. FIG. 3 is a schematic plan view of the transfer device of FIG. 2; FIG. 4 is a partial perspective view showing the end of the transporting beam. FIG. 5 is a vertical cross-sectional view of the frame member of the transfer device shown in FIGS. 2 and 3; FIG. 6 is a vertical cross-sectional view of a connecting portion in the transfer device shown in FIGS. 2 and 3; 1a, 1b-1n...Surface treatment tank 2...Mounting station 3...Removal station 4...Initial station 5...Final station 6... Idle station 10... Frame member 11... Connection portion 12... Beam 13... Hook 14... Pivot 15... Pin 16... ...Electric actuator 17...Lever 18...Connecting rod 19...Drive motor 20...Reducer 21...Chain 22...Gear 50...Wheel 52...Rail 53...Rack 54...Roller 55...Guide roller

Claims (4)

[Claims] (1) Transfer of the empty beam from which the processed material has been removed after processing in the surface treatment equipment for shapes, etc., from the final station to the initial station for recirculating the unprocessed material. A method comprising: at least one station between an initial station where an empty beam is positioned to begin processing and a final station where an empty beam is positioned after removal of processed workpieces;
Two idle stations are installed, and the empty beam from the final station is first transferred to the idle station and then transferred to the initial station, so that the empty beam is transferred to the initial station through a stepwise transfer process from the final station through the idle station. A method for transporting an empty beam, characterized in that: (2) The empty beam transfer method according to claim 1, characterized in that the empty beams are transferred simultaneously through the stepwise transfer process in a synchronized manner. (3) Transport of the empty beam from which the processed material has been removed after processing in the surface treatment equipment for shapes, etc., from the final station to the initial station for recirculating the unprocessed material. In the apparatus, an idler is provided at an intermediate position between an initial station where the empty beam is positioned to start processing and a final station where the empty beam is positioned after the processed workpiece is removed. It has two sets of holding means for removably holding a station and an empty beam located at a final station and an idle station, respectively, and is driven back and forth with a stroke half the distance between the initial station and the final station, A conveying device configured to simultaneously transport the empty beam held at the final station and the empty beam held at the idle station to the idle station and the initial station, respectively. Beam transport device. (4) The conveying device has an elongated frame member extending at least the distance between the initial station and the final station, and two sets of holding means are mounted in series on the frame member, each holding means being attached to the frame member in series. 4. The empty beam transporting device according to claim 3, wherein the means includes hooks that engage with both ends of the empty beam or with hanging portions provided at both ends.