JPH07155717A - Air blow device having work inclining device - Google Patents

Abstract

PURPOSE:To efficiently remove washing liquid sticking to or accumulating at works after washing by air blow. CONSTITUTION:One end of a receiving base 21 on which a pallet 2 stacked with the works in plural stages is placed is freely rotatably supported by a hinge shaft 24 and a chain 26 is connected to the other end of this receiving base 21. This chain 24 is pulled up by an air cylinder 27, by which the receiving base 21 is tilted. On the other hand, a nozzle unit 41 having many air blow nozzles 41 on the inner side is made liftable in the state of enclosing the works 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air blower capable of removing cleaning droplets by inclining the work together with a pallet before blowing the cleaning droplets to the cleaning workpiece by blowing air.

[0002]

2. Description of the Related Art For example, oil quenching may be carried out as a part of carburizing in steel parts such as drive system gears and shafts of engines and missions. In oil quenching, a work heated to a predetermined temperature is immersed in quenching oil, so that a large amount of quenching oil adheres to the surface of the work after quenching. Since it may be inconvenient if the quenching oil adheres to the work surface, the cleaning process is performed after quenching to remove the oil on the work surface.

The outline of a conventional example of cleaning a work after quenching is as follows. The work after quenching is cleaned by dipping or spraying in a cleaning liquid, and then cleaning droplets are blown off by an air blow, and finally dried in a drying chamber. It is like doing. As shown in FIG. 6, the work is handled with a large number of works 1 placed on a pallet (tray) 2.

[0004]

By the way, conventionally, since the cleaning liquid adhering to the work 1 has been removed by a fixed air blow nozzle, it is difficult for air to be applied to all the works, resulting in insufficient drainage. there were. In addition, when the work 1 has a concave shape, the cleaning liquid in the concave portion cannot be removed only by air blow. Further, since air is blown from around the pallet 2, there is a problem that air is not applied to the inside of the pallet and drainage of the inside is insufficient.

If the drainage in the air blowing step is insufficient, the drying time in the subsequent drying step becomes long and the drying temperature must be raised, which may cause poor drying depending on the work. There was also.

As a conventional device for draining a work, there is a device for reversing a work to drain water, as disclosed in Japanese Utility Model Laid-Open No. 165835/1987.
Such a technique cannot be applied to a large number of works loaded on a pallet.

[0007]

The structure of the present invention for solving the above-mentioned problems is an air blower provided between a washing process and a drying process of a large number of works placed on a pallet in a plurality of stages. An air blow nozzle unit that is mounted on the pallet and is rotatably supported on one side, and a plurality of air blow nozzles that are located above the cradle and that are vertically movable; A tilting mechanism for tilting the work together with the pallet by raising the other side of the cradle.

[0008]

In the air blower having the above construction, the pallet loaded with the works washed in the washing step is placed on the pedestal. When the pallet is placed on the pedestal, the pallet is tilted by the tilting mechanism to tilt the work together with the pallet. By tilting the work, the cleaning liquid such as the recess of the work is removed. After this, the cradle is returned to its original condition. Next, the air blow nozzle unit descends while blowing air from the air blow nozzle, and the cleaning liquid droplets on the work are blown off. When the air blow nozzle unit reaches the lower end, it rises and returns, and when it reaches the upper end, the pedestal is tilted again, the work is tilted together with the pallet, and the cleaning liquid is removed. The above is one cycle,
After being repeated one to a plurality of times, it is sent to the next drying step.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of an air blow device according to the present invention will be described with reference to the drawings. FIG. 1 shows a front surface of an air blowing device according to an embodiment, FIG. 2 shows a side surface thereof, FIG. 3 shows a plane thereof, and FIG. 4 shows a cleaning facility including the air blowing device. The whole side is shown.

First, the overall construction of the cleaning equipment will be described with reference to FIG. In FIG. 4, a pallet (see FIG. 6) on which a large number of works are stacked and stacked is intermittently transferred from the left side to the right side, and sequentially cleaned. That is, a series of work is performed without transferring the work together with the pallet. The entire cleaning equipment is partitioned by a wall body 11, and a hot-water immersion chamber 12 for immersing the hardened work in warm water is provided at the left end. The left side surface of the hot-water immersion chamber 12 serves as an entrance to the equipment, and a door 1 for loading a work is provided therein.
3 is provided.

Next to the hot water immersion chamber 12, there is provided a hot water spray chamber 14 for showering hot water on the work after it has been immersed in hot water, and next to it, an alkaline immersion chamber for dipping the work in an alkaline cleaning tank. 15 are provided. Next to the alkali immersion chamber 15, there is provided an alkali spray chamber 16 for spraying the alkali cleaning liquid onto the work taken out from the alkali cleaning tank, and next to it there is provided a finishing hot water washing chamber 17 for spraying warm water onto the work. There is.

Next to the finishing hot water washing chamber 17, an air blower 18 which is the object of the present invention is provided. In the air blow device 18, the water droplets attached to the work are blown off by the air blow. Next to the air blower 18, that is, at the right end of the equipment, a drying chamber 19 for drying the work with warm air is provided. The right side surface of the drying chamber 19 is an outlet of the equipment, and a door 20 for carrying out the work is provided there.

In the air blower 18, a work receiving portion 22 is provided below the left and right leg portions of a frame-shaped receiving base 21.
Is provided, and a hinge bracket 23 is fixed on one of the work receiving portions 22, and the hinge bracket 23 and the hinge bracket 24 attached to the side of the wall 11 of the equipment are coupled by a hinge shaft 25. ing. That is, the pedestal 21 can rotate about the hinge shaft 25.

The other work receiving portion 22 of the receiving table 21
The lower ends of two chains 26 are connected to. The other ends of these chains 26 are respectively connected to the tips of rods 28 of an air cylinder 27 provided on the upper wall portion 11a of the wall body 11. Therefore, when the air cylinder 27 is shortened, the pedestal 21 is tilted about the hinge shaft 25. in this way,
In the present embodiment, the hinge shaft 25, the chain 26, and the air cylinder 27 constitute a work inclining mechanism.

On each work receiving portion 22 of the receiving table 21,
A horizontal sliding guide 29 having an L-shaped cross section for supporting the lower surface of the pallet 2 is provided. These guides 29
When the pedestal 21 is in the horizontal state, the finishing hot water washing chamber 17 and the drying chamber 19 before and after the air blower 18 concerned.
It can be connected to the guides 30 and 31 provided on the.

Below the pedestal 21, a pair of rails 32 is provided.
Is provided, and the work 3 is mounted on these rails 32.
The wheels 34 of the retriever truck 33 for intermittently sending the vehicle are on the vehicle. The retriever cart 33 is provided with a retriever 35. This retriever 35 is a retriever cart 33.
It is attached to a position such that the tip portion thereof can rotate between a position where it projects obliquely upward and a position where it rotates downward. When no external force is applied, the tip of the retriever 35 projects upward due to the spring force and its own weight.

The retriever carriage 33 is reciprocally driven by an appropriate drive mechanism such as a rack and pinion. Here, the rack 3 is mounted on the lower surface of the retriever carriage 33.
6 is provided, and the pinion 37 meshing with the rack 36 is reciprocated by being rotated by a motor.

The air blow nozzle unit 41 has a quadrangular frame shape so as to surround the work 1 on the pallet 2, and a large number of air blow nozzles 42 are provided on the inner surface thereof. Air blow nozzle unit 41
The rod 44 of the air cylinder 43 installed in the upper wall portion 11a of the wall body is coupled to the upper part of the. Therefore, the operation of the air cylinder 43 causes the air blow nozzle unit 4 to
1 surrounds the work and can be lowered and raised. The air blow nozzle unit 41
A guide rod 45 is erected on the upper part of the guide rod 45, and the guide rod 45 is provided on the upper wall portion 11a of the wall body.
Will be guided by.

Next, the action of removing the cleaning liquid by the air blower 18 having the above structure will be described with reference to FIGS. When the finish washing by the hot water shower is completed in the finishing hot water washing room 17, the pallet 2 on which the work 1 is placed is transferred by the retriever carriage 33 onto the pedestal 21 of the adjacent air blower 18. Specifically, the pallet 2 is, as shown in FIGS.
It is transferred onto the slide guide 29 on the work receiving portion 22 of.

When the pallet 2 is placed on the slide guide 29 on the work receiving portion 22, the air cylinder 27 is shortened,
As shown by the chain double-dashed line in FIG. 1 and FIG.
1 is tilted, and the work 1 is tilted at an angle α together with the pallet 2. By tilting the work 1, the cleaning liquid in the recesses of the work 1 is discharged and removed. After this, the air cylinder 27
Is extended, the pedestal 21 is returned to the horizontal state, and the work 1 is returned to the original horizontal state together with the pallet 2.

When the work 1 returns to the horizontal position, the air cylinder 4
3 is extended, and the air blow nozzle unit 41 is lowered while surrounding the work 1. At this time, air is ejected from the air blow nozzle 42 of the air blow nozzle unit 41. With this blow air, the upper workpiece 1
The cleaning liquid droplets adhering to the work 1 are blown away in order from.

When the air blow nozzle unit 41 reaches the lower end, the air cylinder 43 operates in the opposite direction, that is, the air blow nozzle unit 41 rises and blows the cleaning liquid droplets by the blow air while rising. When the air blow nozzle unit 41 reaches the rising end, the pedestal 21 is tilted again. As a result, the cleaning liquid that has been blown away by the blow air and that has entered the concave portion of the work 1 is discharged and removed.

The above operation is defined as one cycle and
Do once to multiple times. Then, the retriever cart 33 conveys the workpiece 1 together with the parette 2 to the adjacent drying chamber 19.

The angle α (15 ° in this embodiment) for inclining the pallet 2 is appropriately selected according to the shape of the product. Even if the pedestal 21 is tilted, the pallet 2 does not fall off the sliding guide 29 because the sliding guide 29 is L-shaped. In order to prevent the pallet 2 from falling, a fall prevention guide or the like may be provided on the wall 11 or the like. The work 1 is restrained on the pallet 2 so that the work 1 does not slide down even if the pallet 2 tilts. Further, in the present embodiment, the pallet 2 is inclined in a direction orthogonal to the conveyance direction of the work 1, but the invention is not limited to this direction. However, since the wall 11 is provided in this direction, it is easy to install a discharge path for the cleaning liquid discharged from the pallet 2 and the work 1.

In the above embodiment, a mechanism for lifting the pedestal 21 by raising it by the chain 26 is used as a means for raising the end of the pedestal 21 and tilting the pedestal 21. A mechanism can be adopted. Further, the shape of the air blow nozzle unit 41 is not limited to a quadrangle shape when seen in a plan view, and can be appropriately changed according to the shape of the pallet.

When the air blower according to the present invention was actually used, 90% drainage could be realized. Also, in the subsequent drying process, the drying time can be shortened from 7 minutes to 5 minutes, and the drying temperature can be lowered from 150 ° C to 80 ° C, which reduces the capacity of the drying device and saves the electricity bill. Can be achieved.

[0027]

According to the air blow device of the present invention,
Since the pedestal on which the pallet loaded with the work is placed is inclined, the cleaning liquid accumulated in the recess of the work can be removed without the need for transferring the work, and the cleaning liquid droplets can be efficiently blown off by the air blow. It came to be done. Also, since the air blow nozzle unit can be raised and lowered and blow air is applied to the work while raising and lowering it, air is applied to the entire work, and the inner part of the pallet can also be drained, greatly improving drainage performance. Therefore, it is possible to shorten the drying time in the subsequent drying step, lower the drying temperature, and further reduce the size and energy of the drying device. Also, since most of the water was drained before drying, no stains or the like remained on the work.

[Brief description of drawings]

FIG. 1 is a front view of an air blow device according to an embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a plan view of FIG.

FIG. 4 is a side view of the entire cleaning equipment.

FIG. 5 is an explanatory diagram of an operation of the apparatus according to the embodiment.

FIG. 6 is a perspective view of an example of a work.

[Explanation of symbols]

 1 Product 2 Pallet 11 Wall 17 Finishing Hot Water Washing Room 18 Air Blow Device 19 Drying Room 21 Receiving Stand 22 Work Receiving Section 25 Hinge Shaft 26 Chain 27 Air Cylinder 29 Sliding Guide 32 Rail 33 Retriever Cart 41 Air Blow Nozzle Unit 42 Air Blow Nozzle 43 Air Cylinder

Claims (1)

[Claims] 1. An air blower provided between a washing process and a drying process of a large number of works placed on a pallet in a plurality of stages, on which the pallet rides and is rotatable on one side. A supported pedestal, an air blow nozzle unit that is located above the pedestal and has a large number of air blow nozzles, and is vertically movable, and the other side of the pedestal is raised to raise the pallet. An air blower comprising: a tilting mechanism for tilting the work.