JPH0755310B2 - Can body rinsing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rinsing device for a can body used for rinsing by spraying a rinsing liquid on a can body having a cleaning liquid attached thereto.

[0002]

2. Description of the Related Art As is well known, a so-called two-piece can is composed of a bottomed cylindrical can body made of an aluminum alloy and a can lid for closing an opening of the can body. As a method of manufacturing the can body, a cup body is subjected to cupping press to form a cup, and so-called DI processing is applied to the cup to obtain a can body.

By the way, the can for which DI processing has been completed has a lubricant for processing adhered to its surface, and printing or the like cannot be performed as it is. For this reason, a process of spraying a cleaning liquid on the can body that has been subjected to DI processing to remove the lubricant, and then applying a rinsing liquid (industrial water, etc.) to the can body to remove the cleaning liquid is performed. After the cleaning and rinsing process is completed, the can body is dried to perform a printing process and the like.

The structure of a conventional rinsing device for a can used in such a rinsing step will be described with reference to FIGS. 8, 9 and 11. This rinsing device includes a transport path 2 for transporting a large number of can bodies 1 to which the cleaning liquid has adhered in one direction (the arrow direction in FIG. 8), and above and below this transport path 2 along the width direction of this transport path 2. Each of the three pipes 3 arranged in parallel, a plurality of branch pipes 3a (see FIG. 11) extended from the side surfaces on both sides of the pipe 3 in a direction substantially orthogonal to the pipe 3, and the branch pipes 3a A large number of nozzles 4 attached to the tip and spraying the rinse liquid 5 toward the can body 1, a partition wall 6 arranged outside the pipe 3 to prevent the rinse liquid 5 from scattering,
An air blow 7 arranged outside the partition wall 6 and above the transfer path 2 and a tank 8 arranged below the transfer path 2 and storing the rinsing liquid 5 are provided. As the transfer path 2, a stainless net driven by a sprocket connected to a power mechanism is used, and a rinse sprayed from a nozzle 4 arranged below the transfer path 2 toward the can body 1. The liquid 5 can be brought into contact with the can body 1. Further, the can body 1 placed on the transport path 2 is in a state in which the bottom portion of the can body 1 faces upward and the opening portion faces downward, so that the rinse liquid is not accumulated inside. There is. Moreover, the interval (nozzle pitch) P between the nozzles 4 is 100 mm to 200 m.
It is set to about m. This interval P is determined in consideration of the ejection angle of the nozzle.

According to such a rinsing device, the cleaning liquid adhering to the surface of the can body can be washed away by the rinsing liquid, and the subsequent printing process and the like can be performed well.

By the way, in the rinsing process using the above-described conventional rinsing device, the phenomenon that the can 1 which has reached the conveying path 2 falls down (so-called falling can) may occur. When an overturned can occurs, the can is not only discarded because the rinsing becomes defective, but also the rinsing liquid is retained inside the can, and the can is transported to the subsequent process and transported. The rinsing solution causes a problem that the subsequent process may be disturbed.

Therefore, as a result of intensive studies conducted by the inventor of the present invention in order to prevent inversion, the following findings were obtained. Generally, the nozzle 4 is designed so that the rinsing liquid 5 can be uniformly ejected within the ejection angle α (see FIG. 9).
Depending on the usage conditions, the flow rate near both ends of the injection angle may increase. Further, the nozzle 4 is likely to be clogged with sludge contained in the rinsing liquid 5, and especially in the initial stage of clogging, the injection state of the nozzle 4 may be changed to increase the injection amount in the oblique lateral direction. . Due to such various circumstances, it was found that when the rinsing liquid injection amount in the diagonal lateral direction increases, the can body 1 cannot withstand the force in the lateral direction, resulting in the phenomenon of inversion can. . Particularly, as shown in FIG. 10, the bottom portion 1a of the can body 1 is
Is formed in a dome shape that protrudes inward,
Moreover, since the weight of the can body 1 is extremely light, when the sprayed rinsing liquid has a strong lateral force, the phenomenon of inversion can easily occur.

To solve this problem, for example, a method of reducing the flow rate of the rinsing liquid 5 ejected from the nozzle 4, a method of reducing the orifice diameter of the nozzle to reduce the flow rate, and a nozzle ejection angle It is conceivable that a method of reducing α to reduce the lateral force of the rinsing liquid is used.

However, if the method of simply reducing the injection flow rate causes insufficient rinsing of the can body, and if the method of reducing the nozzle diameter is used, the nozzles are frequently clogged with sludge, making practical application difficult. .
Further, when the nozzle injection angle α is reduced, in order to sufficiently spray the rinsing liquid 5 on a large number of can bodies 1, unless a large number of nozzles 4 are attached to one pipe 3, the same as the conventional case. Can not achieve the rinse effect. However, since the nozzles 4 are clogged with sludge due to use, they are regularly cleaned, and when the number of nozzles 4 increases, cleaning and replacement work of the nozzles 4 becomes complicated. Not only that, but there is the inconvenience that the burden on the pipe 3 becomes large, and it is difficult to realize such a method.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a rinsing device for a can body capable of preventing the can from falling during the rinsing process of the can body. There is.

[0011]

A rinsing device for a can according to a first aspect of the present invention has a structure in which a cushioning member having a through hole penetrating in the vertical direction is arranged between a nozzle and a conveying path.

In the rinsing device for a can according to claim 2, a plurality of branch pipes are attached to the pipe at intervals with each other in the extension direction of the pipe, and the plurality of branch pipes are extended from one side surface of the pipe. , Alternately in the extension direction of the pipe, using a long pipe body and a short pipe body, between the nozzle and the transport path,
A buffer member having a through hole that penetrates in the vertical direction and serves as a passage for the rinse liquid is arranged.

A rinsing device for a can according to a third aspect is the rinsing device for a can according to the second aspect, in which branch pipes are extended from side surfaces on both sides of the pipe in a direction intersecting with the pipe and both sides thereof are provided. As the branch pipes, the long pipe body and the short pipe body are alternately used in the extension direction of the pipe.

[0014]

The action of the rinsing liquid sprayed from the nozzle onto the can body is buffered in the lateral force by the buffer member, so that the lateral force acting on the can body is reduced to prevent the can from falling. You can

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rinsing device for a can according to a first embodiment of the present invention will be described with reference to FIGS. In the description of the device according to the present example, the same components as those of the above-described conventional device are designated by the same reference numerals, and detailed description thereof will be omitted.

The apparatus of the present embodiment differs from the above-mentioned conventional apparatus in that a buffer member 10 having a through hole extending vertically is arranged between the nozzle 4 and the conveying path 2. There is. In this example, the cushioning member 10 is formed by assembling thin plates made of stainless steel (SUS316) in a grid shape so as to form a rectangular shape as a whole, and is formed by a stainless plate assembled in a grid shape. Hole 10a (Fig. 2
Is 25 mm square, and the thickness of the entire member in the vertical direction (that is, the width of the thin plate) is 10 mm. Further, the area of the buffer member 10 is
The area is larger than the sprayed area of the rinse liquid 5 sprayed on the upper surface of the cushioning member 10.

A holder 12 having a fitting portion 12a having a U-shaped cross section is disposed on the side of the buffer member 10.
The fitting member 12 a of the holder 12 has the cushioning member 10
The side edges of are fitted together, whereby the cushioning member 10 is attached to the device side. The holder 12 is fixed to an arm 11 projecting downward from the upper part of the device.

Also in the rinsing apparatus of this example, by spraying the rinsing liquid 5 from the nozzles 4 arranged above and below the can 1, the cleaning liquid adhering to the surface of the can 1 can be washed away.

In the apparatus of this example, among the rinse liquids 5 ejected from the nozzle 4 arranged above the can body 1, particularly the rinse liquid 5 ejected in the lateral direction collides with the buffer member 10 and collides. The rinsing liquid 5 drops through the through holes 10a, comes into contact with the can body 1, and the cleaning liquid for the can body 1 can be washed away. Therefore, according to the apparatus of this example, the lateral force of the rinse liquid 5 can be buffered by the buffer member 10.
There is an advantage that the can body 1 can be prevented from falling.

Here, in the apparatus of the present embodiment, the rinsing liquid 5 that has been jetted once collides with the buffer member 10, so the rinsing liquid 5
Although the kinetic energy of itself will be reduced, even in this case, the effect of rinsing is hardly reduced. This is because, in the rinsing step of the can body 1, even if the rinsing liquid itself does not have high kinetic energy, the cleaning liquid adhering to the can body 1 is brought into contact by bringing the rinsing liquid into contact with the surface of the can body 1. It is possible to replace the rinsing liquid with the rinsing liquid, thereby achieving the intended purpose of removing the cleaning liquid. That is, according to the apparatus of this example, if the conditions such as the nozzle shape and the ejection pressure are the same as those of the conventional apparatus, the same rinsing effect as that of the conventional apparatus can be obtained.

Further, in the apparatus of this example, the cushioning member 1
Since a grid-shaped structure is used as 0, FIG.
Even if the spray range S from the nozzle 4 is wide as shown in FIG. 3, the buffer member 10 can buffer the lateral force of the rinsing liquid, so that the tumbling can can be sufficiently prevented. Therefore, the spray range S for one nozzle 4 can be expanded as compared with the conventional device, whereby the number of nozzles 4 can be reduced, and maintenance work of the nozzles 4 can be facilitated. There is also.

Further, in the apparatus of this embodiment, even if the pressure of the rinsing liquid ejected from the nozzle 4 is increased to some extent, the buffer member 1
Since the force in the lateral direction is buffered by 0, almost no inversion can occur. Therefore, the supply amount of the rinse liquid per unit time to the can body 1 can be increased, and the rinse capacity can be improved.

Similarly, even if the orifice diameter of the nozzle 4 to be used is increased, no collapse of the can occurs. Therefore, by increasing the orifice diameter, the frequency of clogging of the nozzle 4 can be reduced, and maintenance such as cleaning can be performed. The work can be simplified.

Further, as described above, since the rinsing ability per unit time can be improved, a sufficient rinsing effect can be obtained even if the total length of the apparatus required for the rinsing step is shortened, and the equipment is small. Therefore, the space efficiency can be improved.

In the above-mentioned apparatus of this embodiment, the buffer member 10 is formed in a lattice shape. However, when the spray shape from the nozzle 4 is a substantially elliptical shape as shown in FIG. 4, it is formed in a slit shape. The cushioning member 20 may be the same. In the nozzle 4 in this case, since the ejection angle is set to be wide in the width direction of the transport path 2 and narrow in the length direction, the rinsing liquid having a lateral force toward the length direction of the transport path 2. Is rarely jetted.

Next, a rinsing device for a can according to a second embodiment of the present invention will be described with reference to FIGS. In the description of the rinsing device of the present example, the same components as those of the rinsing device of the first embodiment described above will be denoted by the same reference numerals and detailed description thereof will be omitted, and only different points will be described below.

The apparatus of the first embodiment uses three pipes 3, but the apparatus of this embodiment uses two pipes 3. Further, a branch pipe 31 is used instead of the branch pipe 3a in the first embodiment. The branch pipe 31 is provided on both sides of the one pipe 3 (see FIGS. 5 and 6), and is provided on only one side of the other pipe 3. As the branch pipes 31, long pipe bodies 31a and short pipe bodies 31b are alternately used in the extension direction of the pipe 3, and they are arranged in a staggered manner as a whole.

In the apparatus of this example, as shown in FIG. 6, the distance between the branch pipes 31 can be narrowed as compared with the conventional case (see FIG. 11). The reason will be described below. Conventionally, the branch pipes 3 having the same length are used. In this conventional technique, the branch pipe 3
If the distance between the nozzles is narrowed, it is difficult to replace and adjust the nozzle 4, and the rinse liquids blown out may interfere with each other to cause a problem. On the other hand, according to the device of this example,
Since the long pipe 31a and the short pipe 31b are alternately used as the branch pipe 31, even if the space between the branch pipes 31 is narrowed, the space between the nozzles 4 can be secured. . That is, in the device of the present example, the interval between the branch pipes 31 can be narrowed while ensuring the interval between the nozzles 4.

Therefore, in the apparatus of this embodiment, the same amount of rinse liquid as that of the branch pipes 3 provided on both sides of the conventional single pipe 3 is supplied to the can body by the branch pipe 31 provided on one side of the single pipe 3. Can be supplied to one. That is, the two pipes 3 provided in the apparatus of this example can supply the same amount of rinse liquid to the can body 1 as in the conventional apparatus.

As a result, in the apparatus of this example, the required distance L for disposing the nozzle 4 in the conveying direction of the can body 1 is as follows.
(See FIG. 5) can be significantly shortened as compared with the conventional one. Therefore, the working time required for the can rinsing step can be shortened. Further, there is an advantage that the amount of material required for the rinsing device can be reduced, which also contributes to cost reduction.

Further, in the apparatus of this example, since the cushioning member 10 is provided, there is an advantage that the inverted can is unlikely to occur even if the distance between the branch pipes 31 is narrowed. That is, when the space between the branch pipes 31 is simply narrowed without providing the cushioning member 10, the lateral force applied to the can body 1 by the rinsing liquid becomes excessive, and the can body can be easily collapsed for practical use. Is difficult. On the other hand, in this example, since the cushioning member 10 is provided, it is possible to narrow the interval between the branch pipes 31, and the above-described advantages can be exhibited.

[0032]

The rinsing device for a can according to the first aspect of the present invention has the structure in which the buffer member having the through-hole penetrating in the vertical direction is arranged between the nozzle and the conveying path. The lateral force can be buffered by the buffer member, and the can body can be prevented from falling. Moreover, in terms of rinsing effect, it is possible to obtain the same effect as the conventional device.

Further, even if the jetting pressure of the rinsing liquid from the nozzle is increased, the inversion can can be prevented by the buffer member, so that the amount of the rinsing liquid supplied per unit time to the can can be increased and the rinsing can be performed. You can improve your ability.

Similarly, even if the orifice diameter of the nozzle to be used is increased, the can is not collapsed. Therefore, by increasing the orifice diameter, the frequency of nozzle clogging can be reduced, and maintenance work such as nozzle cleaning can be performed. Can be simplified.

Further, since the rinsing ability can be improved, a sufficient rinsing effect can be obtained even if the total length of the apparatus required for the rinsing step is shortened, and the equipment can be downsized, resulting in space efficiency. Can be improved.

In the rinsing device for a can according to claim 2, a plurality of branch pipes are attached to the pipe at intervals with respect to each other in the extension direction of the pipe, and the plurality of branch pipes are extended from one side surface of the pipe. , Alternately in the extension direction of the pipe, using a long pipe body and a short pipe body, between the nozzle and the transport path,
A buffer member having a through hole that penetrates in the vertical direction and serves as a passage for the rinse liquid is arranged. For this reason, the working time and materials required for the rinsing device can be reduced, and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a side view showing a rinsing device according to a first embodiment of the present invention.

FIG. 2 is an enlarged arrow view of the main part taken along the line AA of FIG.

FIG. 3 is a view for explaining the operation of the rinsing device according to the embodiment of the present invention, and is a plan view of a main part of the rinsing device.

FIG. 4 is a plan view of a main part of a rinsing device according to a modification of the first embodiment of the present invention.

FIG. 5 is a side view showing a rinsing device according to a second embodiment of the present invention.

FIG. 6 is an enlarged view showing only a pipe portion as viewed in the direction of arrow B in FIG.

FIG. 7 is a front view of FIG.

FIG. 8 is a side view showing a conventional rinsing device.

9 is an enlarged arrow view of the main part taken along the line CC of FIG.

10 is an enlarged view of a main part of FIG.

FIG. 11 is an enlarged view showing only a pipe portion as viewed in the direction of the arrow D in FIG.

[Explanation of symbols]

 1 Can body 2 Transport path 3 Piping 4 Nozzle 5 Rinsing liquid 10/20 Buffer member 10a Through hole 31 Branch pipe 31a Long pipe body 31b Short pipe body

Claims (3)

[Claims] 1. A transport path for transporting a can body having cleaning liquid adhered thereto, and a nozzle disposed above the transport path for spraying a rinsing liquid toward the can body moving on the transport path. A can body rinsing device, characterized in that a buffer member having a through hole penetrating in the vertical direction and serving as a passage for the rinsing liquid is arranged between the nozzle and the transport path. Can body rinsing device. 2. A transport path that extends horizontally and transports a can body to which the cleaning liquid adheres in a substantially horizontal direction, and a transport path that is disposed above the transport path and that extends substantially in the extending direction of the transport path. An extended pipe, a plurality of branch pipes extended from at least one side surface of the pipe in a direction intersecting with the pipe, and the can body attached to the tip of the branch pipe and moving on the transport path. A rinsing device for a can body, comprising: a nozzle for spraying a rinsing liquid toward the plurality of branch pipes, wherein the plurality of branch pipes are attached to the pipe at intervals with respect to each other in the extension direction of the pipe. As the plurality of branch pipes extended from the side surface on one side, a long pipe body and a short pipe body are alternately used in the extension direction of the pipe, and between the nozzle and the transport path. ,
A rinsing device for a can body, characterized in that a buffer member having a through-hole penetrating in the vertical direction and serving as a passage for the rinsing liquid is arranged. 3. The branch pipe extends from both side surfaces of the pipe in a direction intersecting with the pipe, and the branch pipes on both sides alternately have long pipe bodies in the extension direction of the pipe. 3. A can body rinsing device according to claim 2, wherein a short tube and a short tube are used.