JPH078924A - Belt feed type washing apparatus - Google Patents

Abstract

PURPOSE:To uniformly and efficiently wash an object to be washed as a whole with high accuracy and to uniformly and wholly remove waterdrops causing stains remaining on the object to be washed after drying. CONSTITUTION:A conveyor 1 having troughs 40 formed thereto by meandering a belt having feed pawls 4 fixed thereto at a predetermined interval up and down is installed and washing soln. jet nozzles 11 and air jet nozzles 14 are arranged above the troughs 40 so as to be turned toward the bottoms of the troughs 40. Objects to be washed are rotated on the bottoms of the troughs to be washed and the waterdrops on the objects to be washed are removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt-conveying type cleaning apparatus for cleaning an object to be cleaned such as metal working parts, and more specifically, it has at least a washing step or a washing step and a draining step, and preferably, The present invention relates to a cleaning device having other processes such as a drying process and an anticorrosion process that follow, and particularly to a cleaning device suitable for cleaning a shaft-shaped object to be cleaned.

[0002]

2. Description of the Related Art Conventionally, as a device for cleaning an object to be cleaned such as a metal-worked part with oil by press working,
A rotating drum type cleaning device is known. This device comprises a rotating drum extending in the horizontal direction, and the rotating drum has a cylindrical outer peripheral wall with innumerable holes and a spiral fin fixed to the inner surface thereof. When the rotary drum rotates, the cleaning object put in from one end of the drum is spirally conveyed to the other end by the action of the spiral fin, and at this time, the cleaning liquid is sprayed from the cleaning liquid injection nozzle provided inside or outside the rotating drum. By being
It is washed continuously.

However, this device cannot be applied to some parts such as elongated shafts. For example, a part that is too long may be caught between the spiral fins in the rotating drum and cannot be conveyed, or cannot be stably conveyed. Also, some of the objects to be cleaned may be deformed because they are agitated during transport and overlap.

In order to clean such an object to be cleaned,
There is a device in which an object to be cleaned is placed in a basket, dipped in an immersion cleaning layer, and ultrasonically cleaned. However, since this cleaning device is a batch process, there is a big problem that work efficiency is low. Further, the ultrasonic vibration is transmitted to the object to be cleaned outside the basket, but the object to be cleaned inside the basket is blocked by the ultrasonic vibration and is not transmitted, so that the cleaning is insufficient. In addition, since there is no cleaning effect at the node of ultrasonic vibration, it is necessary to move the basket so that the surface of the object to be cleaned is located at the antinode of vibration having a cleaning effect, in order to perform uniform cleaning. Further, when the objects to be cleaned are put into or taken out from the basket, the objects to be cleaned come into contact with each other, and thus the scratches are likely to occur. Such a problem is caused by the overlapping of the objects to be cleaned. However, if the objects to be cleaned are not overlapped, the number of objects that can be processed is reduced, and the efficiency is naturally deteriorated.

Further, the object to be cleaned is rinsed with a cleaning liquid after cleaning and then dried. At this time, if the water droplets attached in the rinsing step are not drained, the traces of the water droplets will remain as stains. The cause of the stain is that not only the stain component contained in the rinse solution itself, but also mineral components such as calcium contained in the tap water used for the rinse solution from the beginning remain. This stain is particularly problematic in parts for precision machinery such as motor shafts for NC control devices. Therefore, before the drying step, a water draining operation is performed to blow off water droplets attached to the object to be cleaned with air.

However, it may be difficult to drain the object to be cleaned entirely and uniformly. For example, if you perform this process with the items to be cleaned stacked in the basket,
Water droplets on the contact area of the object to be cleaned will remain. Also, if the object to be cleaned has a shaft shape or a spherical shape, water droplets on the surface of the object to be cleaned to which air is sprayed will move along the surface and move to the opposite side of the air spray side. , It may not be blown off well. Alternatively, if the object to be cleaned is a thin-walled component, the blown air may deform the component.

[0007]

Therefore, the first technical problem to be solved by the present invention is a cleaning having a cleaning step capable of cleaning the object to be cleaned uniformly with high accuracy as a whole. It is to provide a device.

A second technical object is to provide a cleaning apparatus having a draining process capable of removing water droplets, which cause stains remaining on the object to be dried after drying, evenly.

[0009]

Means for Solving the Problems and Actions / Effects In order to solve the above-mentioned first technical problem, the belt-conveying type cleaning apparatus according to the present invention is constructed as follows.

That is, a conveyor for horizontally conveying the object to be cleaned and a cleaning liquid injection nozzle for injecting the cleaning liquid are provided above the conveyor. The conveyor has a belt and belt guide means for guiding the belt to form at least one V-shaped valley. further,
The conveyor includes intermittent feeding means for intermittently feeding the V-shaped valley and feeding the V-shaped valley with respect to the object to be cleaned. The cleaning liquid injection nozzle is provided so as to inject the cleaning liquid toward the bottom of the V-shaped valley formed by the belt.

In the above structure, the object to be cleaned is sent to the V-shaped valley formed by the belt and stays at the bottom of the valley until it is sent out. At this time, as the belt advances, the posture of the object to be cleaned is changed on the spot. In particular,
When the object to be cleaned has an axial shape, it rotates (rotates) at the bottom of this V-shaped valley, in other words, at a fixed position. Therefore, the cleaning liquid sprayed in a fixed direction from the cleaning liquid spraying nozzle provided at a fixed position cleans the object to be cleaned uniformly with high accuracy as a whole. Further, the article to be cleaned is continuously conveyed by the intermittent feeding means at appropriate intervals and passes through the V-shaped valley. Therefore, the object to be cleaned can be efficiently cleaned as compared with the batch processing.

In the above structure, the cleaning liquid jet nozzle is used, but it is possible to use a dipping cleaning layer for storing the cleaning liquid instead of the cleaning liquid jet nozzle.

That is, the immersion cleaning layer is provided so that the V-shaped valley formed by the belt of the conveyor is immersed in the cleaning solution, and an ultrasonic wave generator is provided in the cleaning solution of the immersion cleaning layer.

In the above construction, since the posture of the object to be cleaned can be similarly changed in the V-shaped valley formed by the belt, all parts of the object to be cleaned are evenly antinode parts of ultrasonic vibration and evenly distributed. Ultrasonic cleaning with high accuracy as a whole.

In the above structure, generally, the belt guide means is provided with a guide member at each of the bottom and the peak of the valley so that the belt forms a V-shaped valley.

However, as another embodiment, a guide member may not be provided at the bottom of the valley, and a V-shaped valley may be formed by the hanging of the belt due to its own weight.

In this structure, since the shape of the V-shaped valley formed by the belt is not fixed, restrictions such as the outer diameter of the object to be cleaned that can be applied to the cleaning device are relaxed, which is preferable. That is, in general, it is preferable that there is no gap between the object to be cleaned and the belt at the bottom of the V-shaped valley formed by the belt. Therefore, the outer diameter of the object to be cleaned that can be applied to the apparatus is defined by the belt. The radius of curvature of the bottom of the V-shaped valley is limited to about twice or less. However, in this configuration, the bottom of the V-shaped valley is not restricted to a certain shape by the guide member, and the belt has an arbitrary shape along the outer diameter of the object to be cleaned, and the restriction is relaxed. . This configuration
It is particularly suitable for an object to be cleaned having a large outer diameter.

In addition, this structure also has an effect of reducing the occurrence of scratches on the object to be cleaned. That is, if the shape of the V-shaped valley formed by the belt is fixed, the impact when the cleaning target falls in the V-shaped valley may cause scratches on the belt. However, in this structure, shocks can be absorbed by the shaking of the belt, and the occurrence of such scratches can be prevented. Similarly, it is possible to prevent scratches between parts when a large number of small parts fall into the V-shaped valley at once.

Further, it is preferable that the intermittent feeding means is configured to fix the conveying pawls to the belt at appropriate intervals so as to extend in the width direction of the belt of the conveyor. By doing so, it is not necessary to provide the intermittent feeding means separately and independently, so that the device configuration is simplified and the cost can be reduced.

The second technical problem can also be solved by applying a configuration substantially similar to the washing process described above to the draining process. That is, an air jet nozzle is used instead of the cleaning liquid jet nozzle, and the nozzle is provided toward the bottom of the V-shaped valley formed by the belt.

In the above structure, air is blown evenly on the object to be cleaned conveyed to the V-shaped valley formed by the belt, and water drops are removed.

Further, similarly to the above, it is preferable that the bottom of the V-shaped valley is not fixed, and that the feeding pawl is fixed to the belt as the intermittent feeding means.

Further, it is preferable that the belt is a net woven so that the front surface and the back surface of the belt are doubled by folding back the wire material.

In the above structure, the water droplets adhering to the surface of the belt are transmitted from the surface of the belt through the wire material of the net forming the belt and guided to the back surface of the belt, and few water droplets remain on the surface of the belt. Therefore, the draining effect is enhanced. In addition, the belt having the above-mentioned configuration, even in the washing step,
It can be used without any problems.

Further, it is preferable to provide an air injection nozzle above the belt and directed toward the upstream slope of the V-shaped valley formed by the belt.

With the above structure, it is possible to remove the water droplets adhering to the belt from the belt in advance and prevent the water droplets from reaching the bottom of the V-shaped valley. Therefore, the draining effect at the bottom of the V-shaped valley can be further enhanced.

Further, it is preferable that the bottom portion of the V-shaped valley formed by the belt is provided with a water absorbing roller which comes into contact with the belt from below.

In the above structure, the water drops that remain in the wedge-shaped portion near the bottom of the V-shaped valley of the belt and the contact surface of the object to be cleaned and cannot be removed are guided to the water absorbing roller via the belt. Therefore, the draining effect can be further enhanced.

Since the conveyor having the above structure can be commonly used in the washing process and the water draining process, it is preferable that both the processes are combined.

That is, at least a washing step and a water draining step are included, and the steps to be performed are carried out in series so that the article to be cleaned is conveyed horizontally by one conveyor. Then, in the V-shaped valley formed by the belt of the conveyor,
Each step is configured.

With the above structure, it is possible to solve the first and second technical problems and to provide a highly effective cleaning device that can perform continuous processing with a simple structure.

Since the above structure has a plurality of steps,
Further, it is preferable to provide a door for partitioning the boundary between the steps, and to open the door when the article to be cleaned passes through the boundary between the steps by the intermittent feeding means.

With this structure, the steps can be separated by the partition door without causing any trouble in the conveyance of the object to be cleaned. Therefore, it is possible to prevent the adjacent process from adversely affecting the other process.

[0034]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A belt-conveying type cleaning apparatus according to an embodiment of the present invention shown in FIGS. 1 to 8 will be described in detail below.

The belt-conveying type cleaning apparatus according to this embodiment is
The washing process, the draining process, and the drying process are continuously processed by one conveyor.

First, the overall structure will be described.

The belt conveying type apparatus according to this embodiment is shown in FIG.
As shown in FIG. 3, the housing 60 has a conveyer 1 for conveying an article to be cleaned, and above the conveyance path of the article to be cleaned, a washing step A which is a washing step, a first rinsing step B, and a second rinsing step. C, a draining step D, a drying step E, and a drying step E are sequentially provided.

The conveyor 1 comprises a belt 2 and sprockets 5, 6, 7, 8 for guiding the belt 2.

As shown in FIGS. 2 and 9 (only part of the net 61 is shown) and 10, the belt 2 is knitted by folding back the wire 61 so that the front surface and the back surface of the belt are doubled. It is composed of a net 62, chains 3 on both sides thereof, and bars 63 fixed to both chains 3 and penetrating the net 62, and the bars 63 are provided at appropriate intervals.

The belt 2 is particularly convenient in the draining step, because water droplets attached to the surface are easily guided to the back surface of the belt 2.

The belt 2 is guided by the chains 3 on both sides thereof engaging with the sprockets 5, 6, 7, and 8. Square sprocket 5 and drive sprocket 6 are provided at the four corners of conveyor 1, and drive sprocket 6 rotated by drive means (not shown) advances belt 2. The upper sprocket 7 and the lower sprocket 8 provided on the upper side of the belt 2 meander the belt 2 vertically to form a valley 40. Guide plates 9 are provided on both sides of the valley 40 from above the belt 2.

A washing step (a washing step A, a first rinsing step B, a second rinsing step C), a washing step D and a drying step E are provided in the valley 40. That is, the cleaning liquid jet nozzle 11, the first rinse liquid jet nozzle 12, the second rinse liquid jet nozzle 13, the air jet nozzle 14, and the hot air nozzle 15 are provided above the belt toward the bottom of the valley 40. There is.

A partition cylinder 16 is provided outside the housing 60, and a partition door 17 for partitioning the process is opened and closed by the partition cylinder 16. The partition door 17 is opened by the transfer pawl 4 as the article to be cleaned 50 passes through the boundary between the steps.

In the above structure, the object to be cleaned 50 is the same as that shown in FIG.
From the left side of the conveyor 1 shown in FIG. The object to be cleaned 50 is conveyed as the belt 2 advances, and the valley 4
It drops to 0 and stays in the valley for a while. Then, when the subsequent transport pawl 4 passes through the valley, the objects to be cleaned 50 are scooped together and transported to the next valley 40. In this way
The to-be-cleaned object 50 intermittently passes through the valleys 40 one after another, and is washed in the valleys 40 during that time, drained, dried, and carried out from the right side of the apparatus.

At this time, a washing step, for example, washing step A
3, the object 50 to be cleaned that has fallen into the valley 40 remains at the bottom of the valley until the subsequent transport pawl 4 ′ reaches the bottom of the valley. At this time, the cleaning target 50 is cleaned with the cleaning liquid from the cleaning liquid spraying nozzle 11, but the cleaning target 50 rotates (rotates) as shown by the arrow 43 by contact with the belt advancing in the direction of the arrow 42, The part that the cleaning liquid contacts always changes. Therefore, the object 50 to be cleaned is cleaned uniformly and efficiently with high accuracy.

As a modification of the washing process, there is a method of immersion cleaning. That is, as shown in FIG.
The immersion cleaning layer 20 is provided so that the portion of the valley 40 formed by is immersed in the cleaning liquid, and the ultrasonic wave generator 21 is provided in the immersion cleaning layer 20 so as to be immersed in the cleaning liquid.

In this structure, the object 50 to be cleaned is shown in FIG.
Since it rotates (rotates) at the bottom of the valley 40 formed by the belt 2 as in the case of, the surface of the object to be cleaned 40 located at the antinode portion of ultrasonic vibration always changes, and it is even and highly accurate overall. Is efficiently cleaned.

Next, the draining step will be described.
That is, as shown in FIGS. 1 and 5, in the water draining step D, the air injection nozzle 14 is provided instead of the cleaning liquid injection nozzle of FIG. In the above structure, the belt 2
The object 50 to be cleaned on the bottom of the valley 40 formed by is blown off the water droplets adhering to the surface thereof by the air from the air jet nozzle 14. At this time, the object to be cleaned 50 rotates (spins) as shown by an arrow 43 due to contact with the belt 2 which advances in the direction shown by the arrow 42 in FIG. To be done.

Next, a modification of the draining process will be described. That is, in the first modification, as shown in FIG.
An air jet nozzle 24 for blowing air to the upstream slope 41 of the belt 2 is further provided. As a result, the water droplets attached to the belt 2 are removed and no water droplets reach the bottom of the valley 40. Therefore, the article to be cleaned 5
Since no water droplets adhere to 0, the draining effect is enhanced.

In the second modification, as shown in FIG. 7, in the valley 40 formed by the belt 2, a water absorbing roller 25 is provided which comes into contact with the back surface of the belt 2 from below the belt 2. The water absorbing roller 25 is formed of a sponge-like member that easily absorbs water. With this configuration, the draining effect is further enhanced. That is, if the object to be cleaned has a shaft-like shape or the like, the wedge-shaped portion 4 near the contact surface between the object to be cleaned and the belt.
This is because water droplets may always remain on No. 4 and in this case, if the water absorbing roller 26 is used, the water droplets remaining on the wedge portion 44 can be guided to the water absorbing roller 26 via the belt 2 and removed.

FIG. 8 shows a third modification in which the first modification and the second modification are combined.

In the above-described embodiment and its modification, the water draining effect of the object to be cleaned 50 is enhanced, so that the water droplets that cause stains remaining on the object to be cleaned after drying can be effectively removed.

In the above embodiment, the belt 40 forms the valley 40 by the upper sprocket 7 and the lower sprocket 8, but the lower sprocket 8 may be omitted.

According to this structure, the radius of curvature of the valley 40 formed by the belt 2 is not restricted by the lower sprocket 8, so that a large object to be cleaned 50 can be applied. Further, since the belt 2 can absorb the shock when the item to be cleaned falls by shaking, the item to be cleaned 50
It is possible to prevent damage due to impact when falling into a valley, and damage between parts when a large number of small parts are sent to the valley at one time.

The present invention is not limited to the above embodiments and modifications, but can be implemented in various other modes.

For example, the combination and order of the processing steps can be arbitrarily selected. As a method of conveying the conveyed object, the conveyor 1 may be provided separately in each step, or may be combined with another conveying method such as a rotary drum type. Further, the transport pawl 4 which is an intermittent feeding means
May be independently configured without being fixed to the belt 2, and may be separately and independently driven by providing another driving means.

[Brief description of drawings]

FIG. 1 is a side view of essential parts of a belt-conveying type cleaning device according to an embodiment of the present invention.

FIG. 2 is a plan view of an essential part of the above embodiment.

FIG. 3 is an enlarged side view of the washing process of FIG.

FIG. 4 is a front view showing a main part of a modified example of the embodiment of FIG.

FIG. 5 is an enlarged side view of the draining process according to the above embodiment.

FIG. 6 is an enlarged side view of a first modified example of the embodiment shown in FIG.

FIG. 7 is an enlarged side view of a second modification of the embodiment of FIG.

FIG. 8 is an enlarged side view of a third modification of the embodiment of FIG.

FIG. 9 is an enlarged plan view of a main part of the belt of the above embodiment.

FIG. 10 is an enlarged cross-sectional view of the main parts of FIG.

[Explanation of symbols]

1 Conveyor 2 Belt 3 Chain 4, 4'Conveying Claw (Intermittent Feeding Means) 5 Square Sprocket (Belt Guiding Means) 6 Drive Sprocket (Belt Guiding Means) 7 Upper Sprockets (Belt Guiding Means) 8 Lower Sprockets (Belt Guiding Means) 9 Guide plate 11 Cleaning liquid jet nozzle 12 First rinse liquid jet nozzle 13 Second rinse liquid jet nozzle 14 Air jet nozzle 15 Hot air nozzle 16 Partition cylinder 17 Partition door 20 Immersion cleaning layer 21 Ultrasonic generator 24 Air jet nozzle 25 Water absorbing roller 40 Valley 41 Slope 42, 43 Arrow 44 Wedge 50 Object to be cleaned 60 Housing 61 Wire rod 62 Net 63 Bar A Cleaning process (washing process) B First rinsing process (C) Second rinsing process (Washing process) D Draining process E Drying process

Claims (10)

[Claims] 1. A washing process comprising a conveyor (1) for horizontally transporting an object to be cleaned (50) and a cleaning liquid injection nozzle (11) provided above the conveyor (1) for injecting a cleaning liquid. The conveyor (1) comprises a belt (2) and belt guide means (5, 6, 7, 8) for guiding the belt (2) to form a V-shaped valley (40) at a predetermined portion. And an intermittent feed means (4) for intermittently feeding the V-shaped trough (40) and sending out from the V-shaped trough (40) with respect to the object (50) to be cleaned. 11) has a washing step (A, B, C) characterized in that it is provided so as to spray the washing liquid toward the bottom of the V-shaped valley (40) formed by the belt (2). Cleaning device. 2. A washing step comprising a conveyor (1) for horizontally transporting an article to be cleaned (50) and an immersion cleaning layer (20) for accumulating a cleaning liquid, wherein the conveyor (1) comprises a belt ( 2), belt guide means (5, 6, 7, 8) for guiding the belt (2) to form a V-shaped valley (40) at a predetermined portion, and to the V-shaped valley (40) And a V-shaped trough (40) are intermittently fed to the object to be cleaned (50), and the immersion cleaning layer (20) is formed by the belt (2). The V-shaped trough (40) is provided so as to be immersed in the cleaning liquid, and
A cleaning device having a cleaning step (A, B, C), characterized in that an ultrasonic generator (21) immersed in the cleaning liquid is provided therein. 3. A washing process comprising a conveyor (1) for horizontally transporting an object to be cleaned (50) and an air injection nozzle (14) provided above the conveyor (1) for injecting air. The conveyor (1) includes a belt (2) and belt guide means (5, 6, 7, 8) for guiding the belt (2) so as to form a V-shaped valley (40) at a predetermined portion. ), And feeding into the V-shaped valley (40) and sending out from the V-shaped valley (40) are the objects to be cleaned (50).
And an intermittent feed means (4) for intermittently performing the air jet nozzle (14) so as to jet the cleaning liquid toward the bottom of the V-shaped valley (40) formed by the belt (2). A cleaning device having a draining step (D), which is provided. 4. A conveyor (1) having at least a washing step (A, B, C) and a draining step (D), and the article to be washed (50) being conveyed horizontally in a series of these steps.
The conveyor (1) has a belt (2) and V-shaped valleys (40) at predetermined portions in the washing step (A, B, C) and the draining step (D) of the belt (2). A belt guide means (5,6,7,8) for guiding so as to form the V-shaped valley (40) and a delivery from the V-shaped valley (40).
0) intermittently feeding means (4) for intermittently carrying out, and in the washing step (A, B, C) and the draining step (D), the article to be washed (50) has a V-shaped valley (40). A washing device characterized in that the washing treatment and the draining treatment are carried out while rotating by the movement of the belt (2) at the bottom. 5. The belt guide means (5, 6, 7) is configured to form the V-shaped valley (40) by hanging down the belt (2) under its own weight. The cleaning device according to Item 1, 2, 3, or 4. 6. The intermittent feeding means is a conveying pawl (4) fixed to the belt (2) at appropriate intervals and extending in the width direction of the belt (2). 1,
The cleaning device according to 2, 3, or 4. 7. The belt (2) is a net (62) woven so that the front surface and the back surface of the belt (3) are doubled by folding back a wire (61). The cleaning device according to Item 1, 2, 3, or 4. 8. An air injection nozzle (24) provided above the belt (2) in the direction of an upstream slope (41) of the V-shaped valley (40) formed by the belt (2). The cleaning device according to claim 3, further comprising: 9. A V-shaped valley (4) formed by the belt (2).
4. A cleaning device according to claim 3, characterized in that it comprises a water-absorbing roller (25) in contact with the bottom of the belt (2) at the bottom part of (0). 10. A partition door for partitioning a boundary at a boundary between processes.
The cleaning apparatus according to claim 4, further comprising: (17), wherein the partition door (17) is opened when the article to be cleaned (50) passes through a boundary between steps intermittently.