JP2548094B2 - Injection device - Google Patents

Description

Description: [Industrial field of use] The present invention relates to a spray device suitable for solvent spraying used in a cleaning device for spraying a cleaning solvent onto various parts for cleaning.
In particular, the present invention relates to an ejection device suitable for cleaning parts such as an ink pan, a doctor, and an ink splash cover used in a printing machine.

[Prior Art] In a gravure printing machine, since the color and type of ink are different each time a print item changes, the ink pan, doctor, etc. must be washed each time.

The conventional general ink pan cleaning method is manual cleaning in which an operator cleans with a cleaning solvent and a rag cloth.

However, such hand washing has the problems that it is a heavy labor, the work efficiency is poor, and the worker inhales the solvent, which is not preferable in terms of occupational hygiene.

In order to solve this problem, a cleaning device is known in which the ink pan to be cleaned is placed face down in a cage made of wire mesh, and the solvent is sprayed from below under the nozzle to horizontally reciprocate the ink pan together with the basket. .

[Problems to be solved by the invention]

However, in the above-mentioned conventional cleaning device, when attempting to clean a plurality of ink pans at the same time, the ink pans must be stacked and set in the basket, in which case the solvent can be sprayed uniformly on the inner surfaces of all the ink pans. However, there was a problem such as uneven cleaning, and because the solvent was sprayed from the bottom to the top, the nozzle was clogged with dirt falling from the ink pan. Of course, if the ink pans are arranged side by side and set in the basket, it is possible to clean all the ink pans satisfactorily, but in that case, a large area of the basket is required and the installation area of the cleaning device is large. The problem arises. In addition, since a basket with a heavy object to be cleaned such as an ink pan is horizontally reciprocated, there is a problem that the driving device becomes large.

The present invention has been made in view of the above conventional problems, and does not cause much clogging of the solvent injection nozzle,
An object of the present invention is to provide an ejecting device capable of uniformly cleaning objects to be cleaned such as a plurality of ink pans.

[Means for solving problems]

The present invention made to achieve the above object is to provide a nozzle mounting pipe having a multiple pipe structure, a plurality of nozzles connected to each of the multiple pipes constituting the nozzle mounting pipe, and being connected to the nozzle mounting pipe, The gist is an injection device including a rotary joint that supplies different fluids to each of the multiple pipes, and a rotating device that rotates the nozzle mounting pipe about its axis.

[Action]

In the ejecting apparatus having the above-mentioned configuration, an object to be cleaned such as an ink pan is set around the nozzle mounting pipe with its surface to be cleaned facing the nozzle mounting pipe. At this time, a long object to be cleaned such as an ink pan is set upright. As a result, a large number of objects to be cleaned can be set in a relatively narrow place. Next, a solvent for cleaning is sent to one of the multiple tubes forming the nozzle mounting tube, the solvent is jetted at high pressure from a large number of nozzles mounted on the tube, and the nozzle mounting tube is simultaneously rotated. As a result, the object to be cleaned is cleaned by the solvent spray from the nozzle, and the spray position at that time changes due to the rotation of the nozzle mounting pipe, so that the details can be cleaned well. Since it is necessary to spray the solvent from the nozzle for a relatively long time in order to remove the adhered dirt on the object to be cleaned, the solvent sprayed from the nozzle and accumulated in the solvent pool below is circulated and recycled. use. This can reduce the amount of solvent used. Next, after the cleaning by solvent circulation is completed, the new solvent is supplied to the other pipes of the multiple pipe, and the new solvent is sprayed from the nozzle connected to the pipe to rinse the object to be cleaned. At this time, since the passage and the nozzle for supplying the new solvent are different from those used for the circulation injection, the new solvent is not contaminated and the object to be cleaned can be rinsed well. Moreover, since the nozzle for rinse cleaning and the nozzle for circulation cleaning are both mounted on the same nozzle mounting pipe, the solvent can be sprayed from the same position onto the object to be cleaned, the cleaning effect is good, and the nozzle The space required for placement can be reduced.

〔Example〕

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

FIG. 4 is a perspective view schematically showing a cleaning system used for cleaning parts such as an ink pan and a doctor of a printing machine. This cleaning system is roughly classified into a cleaning device 2 for cleaning the object 1 to be cleaned such as an ink pan, a new solvent tank 3 for storing a new solvent used for cleaning, and a waste solvent tank for storing a waste solvent of a use agent. 4 and a solvent regeneration device 5 for regenerating the waste solvent. 6 is a cleaning device 2 and a cleaning target 1
60 is a control device for carrying a carrier.

5 and 6 are a vertical sectional view and a horizontal sectional view showing the cleaning device 2. In the figure, reference numeral 8 is a housing forming a closed space, and an opening 8A for inserting and removing the carriage 6 is provided on one side surface thereof. The opening 8A is provided with an inner shutter 9 and an outer door 10 so that the solvent does not leak outside even if the solvent is injected under high pressure. A solvent reservoir 8B capable of storing an appropriate amount of solvent is formed at the bottom of the housing 8, and the bottom surface thereof is inclined toward a drain port 8C formed at one corner. A wire mesh basket type filter 11 is detachably attached to the drain port 8C, and a pipe 40 is connected. Further, in the housing 8, a rail 13 and a guide 14 are arranged at a position higher than the liquid level of the material accumulated at the bottom, so that the carriage 6 is guided to a predetermined position. The upper surfaces of the rails 13 are arranged so as to be at the same height as the floor surface 15. Therefore, the carrier truck 6 traveling on the floor can be used as it is.
It can be carried into the housing 8.

The cleaning device 2 is provided with an injection device according to an embodiment of the present invention. This injection device includes a nozzle mounting pipe 17 held rotatably vertically and about a longitudinal axis on a ceiling 8D of a casing 8, a chain wheel 18 held by the nozzle mounting pipe 17, and a drive. It has a motor 19 and a chain 20. The chain wheel 18, the drive motor 19, the chain 20, etc. constitute a rotating device for rotating the nozzle mounting pipe 17. The nozzle mounting pipe 17 has an object to be cleaned 1 set in the vicinity thereof.
A large number of nozzles 21 and 2 that inject the solvent at high pressure to each part of the
2 are mounted at appropriate intervals in the longitudinal direction.

1, 2 and 3 show the nozzle mounting pipe 17, the nozzles 21 and 22, etc., and the nozzle mounting pipe 17 is an outer pipe 17A.
It has a double-pipe structure consisting of the inner tube 17b and the inner tube 17b. A nozzle 21 is connected to the outer pipe 17A, and a nozzle 22 is connected to the inner pipe 17B. As shown in FIG. 4, at the upper end of the nozzle mounting pipe 17,
A rotary joint 23 is provided, and a pipe 40 for supplying a circulating solvent and a pipe 42B for supplying a new solvent (see FIG. 10) are connected to the rotary joint 23. The pipe 40 is connected to the outer pipe 17A via the rotary joint 23, and the pipe 42B is connected to the inner pipe 17A via the rotary joint 23.
Connected to B.

In FIG. 5, an air intake duct is provided on the side surface of the housing 8.
27 is connected, and an exhaust duct 28 is connected to the ceiling. Dampers 29 and 30 are provided on both ducts 27 and 28, respectively. The exhaust duct 28 extends outside the building,
Moreover, as shown schematically in FIG.
Blower B is placed. The mist separator 31 has a function of separating the solvent mist in the air exhausted by the blower B and returning it to the housing 8.

7, 8 and 9 are perspective views showing the carriage 6.
It is a side view and a front view. The carriage 6 has a horizontal bottom wall 32,
It has a pair of vertical walls 33 standing upright in the center, and most of the bottom walls and the vertical walls are made of wire mesh so that the cleaning solvent can pass through. As shown in FIG. 2, the vertical wall 33 is used to stand up and hold a large object to be cleaned 1 such as an ink pan, and when the carriage 6 is carried into a predetermined position in the cleaning device 2, It is arranged so as to be located on both sides of the nozzle mounting pipe 17. In FIGS. 7 to 9, the vertical wall 33 is provided with a chain 34 for fixing the article to be cleaned, and also with a detachable wire mesh tray 35 for mounting small parts. 36 is a handle and 37 is a wheel.

FIG. 10 is a piping system diagram of the cleaning system shown in FIG. Reference numeral 40 denotes a circulation pipe for circulating the cleaning solvent in the solvent reservoir 8B at the bottom of the cleaning device 2 to the nozzle 21, which is provided with a filter F, an automatic valve A1, a circulation pump P1, and an automatic valve A2 on the way.
41 is a discharge pipe for discharging the solvent in the solvent reservoir 8B to the waste solvent tank 4, which is connected to the discharge side of the circulation pump P1.
Equipped with automatic valve A3. Reference numeral 42 is a supply pipe for supplying the solvent in the new solvent tank 3 to the nozzles 21, 22. The first branch pipe 42A connected to the circulation pump suction side of the circulation pipe 40 via the automatic valve A4 and the automatic valve A5. Then, it is branched to the second branch pipe 42B connected to the nozzle 22 via the pump P2.

A solvent regenerator 5 is connected to the waste solvent tank 4 and the new solvent tank 3, but the structure and operation thereof are not directly related to the present invention, and therefore the description thereof is omitted.

Next, the cleaning operation of the object to be cleaned in the cleaning system having the above configuration will be described.

The object to be cleaned 1 such as an ink pan is placed on the carrier 6 so that the surface to be cleaned faces the vertical wall 33.
Are carried into the cleaning device 2 together with the carriage 6. As a result, as shown in FIGS. 5 and 6, the body to be cleaned 1 is arranged on both sides of the nozzle mounting pipe 17. After carrying in the carrier 6, the shutter 9 and the door 10 are closed and the cleaning device 2 is sealed. The above operation is performed manually.

Next, cleaning is performed as shown in the operation flowchart of FIG. That is, first, the time settings for the circulation cleaning and the rinse cleaning are set on the operation panel. Next, when the automatic cleaning button is turned on, the automatic valves A1 and A2 of the circulation pipe 40 shown in FIG. 10 are opened and the circulation pump P1 starts operating. As a result, the cleaning solvent at the bottom of the cleaning device 2 is sent to the outer pipe 17A of the nozzle mounting pipe 17 through the circulation pipe and is jetted at high pressure from the nozzle 21 toward the cleaning target 1 to clean the cleaning target 1. To do. At the same time, the nozzle mounting pipe 17 is rotated by the drive motor 19 to change the solvent injection position by the nozzle 21. Thus, the cleaning solvent is sprayed at high pressure onto each part of the object to be cleaned 1 and the details are well cleaned, and after spraying, the cleaning solvent accumulated at the bottom of the cleaning device is circulated and reused.

After the circulation cleaning is continued for the specified time set in the timer, the rinse cleaning is started. That is, the circulation pump P1 of the circulation pipe 40 is stopped, the automatic valves A1 and A2 are closed, the automatic valve A5 of the solvent supply pipe 42 is opened, and the pump P2 starts operating. As a result, the solvent in the new solvent tank 3 is sent to the inner pipe 17B of the nozzle mounting pipe 17 through the solvent supply pipe 42, and the nozzle 22
Is sprayed onto the cleaning target 1. Thus, the object to be cleaned 1 is rinsed with a clean cleaning solvent. In the rinse cleaning, it is not necessary to spray the cleaning liquid onto the object to be cleaned at a high pressure, and it is sufficient to wet the surface of the object to be cleaned. After rinsing and cleaning for the specified time set on the timer, pump
P2 stops, the automatic valve A5 closes, and the nozzle mounting pipe 17 stops rotating.

Next, the damper 30 of the exhaust duct 28 opens and the blower B
Operates to exhaust the inside of the cleaning device 2. At this time, the damper 29 of the air intake duct 27 is also opened to enhance the exhaust effect in the cleaning device. After exhausting for a predetermined time, the damper 30 closes,
Blower B stops.

Then, the door 10 and the shutter 9 are opened, and the carriage 6 is carried out. At this time, a local exhaust device (not shown) provided in the vicinity of the opening 8A of the cleaning device 2 is activated to open the opening.
Locally exhaust the area around 8A to prevent the work environment from being contaminated by solvent vapor. This completes one cleaning operation.

In the above embodiment, the nozzle mounting pipe 17 has a double pipe structure. However, the nozzle mounting pipe 17 is not limited to a double pipe and may be a multiple pipe of triple pipes or more. Further, in the above-described embodiment, the present invention is applied to the case of injecting the solvent for cleaning the object to be cleaned, but the injection device of the present invention is not limited to such a case of injecting the cleaning solvent, and other than cleaning. Can also be used for
For example, it can be used for spraying different reaction liquids in a reaction tank.

〔The invention's effect〕

As described above, the injection device of the present invention is connected to the nozzle mounting pipe having a multiple pipe structure, a plurality of nozzles connected to each of the multiple pipes forming the nozzle mounting pipe, and the nozzle mounting pipe. Since a rotary joint that supplies different fluids to each of the multiple pipes and a rotary device that rotates the nozzle mounting pipe about its axis are used, a small space can be obtained by using this injection device for a cleaning device. Thus, an effective cleaning device can be constructed. That is,
Around the nozzle mounting pipe of this spraying device, set an object to be cleaned, such as an ink pan, with the surface to be cleaned facing the nozzle mounting pipe, send the solvent to the nozzle mounting pipe, and install a number of nozzles mounted on the nozzle mounting pipe. By injecting the solvent at a high pressure from the nozzle and rotating the nozzle mounting pipe at the same time, it is possible to satisfactorily clean the object to be cleaned with the solvent ejected from the nozzle. Moreover, at this time, some of the many nozzles attached to the nozzle mounting pipe can be used to inject the circulating solvent for solvent circulation cleaning, and the other nozzles can be used to inject the new solvent for rinse cleaning. When the solvent is sprayed, the solvent is not contaminated by the circulating solvent, and both the circulating solvent and the new solvent are sprayed from the same position on the object to be cleaned.
By positioning the nozzle mounting pipe in the center of the object to be cleaned, both circulation cleaning and rinse cleaning can be performed well. Further, since two nozzle mounting pipes for circulation cleaning and rinsing cleaning are not required, various effects such as reduction of space required for nozzle arrangement can be obtained.

[Brief description of drawings]

FIG. 1 is a side view of an injection device used in the cleaning device shown in FIG. 4, FIG. 2 is a horizontal sectional view of a nozzle mounting pipe of the injection device, FIG. 3 is a longitudinal sectional view thereof, and FIG. 5 is a schematic perspective view of a cleaning system for cleaning machine parts, FIG. 5 is a vertical sectional view showing a cleaning device used in the cleaning system, FIG. 6 is a horizontal sectional view of the cleaning device, and FIG. 7 is a perspective view of a carrier truck. , FIG. 8 is a side view thereof, FIG. 9 is a front view thereof, FIG. 10 is a piping system diagram of a part of the cleaning system, and FIG. 11 is a flowchart of the cleaning operation. 1 ... Object to be cleaned, 2 ... Cleaning device, 3 ... New solvent tank, 4 ... Waste solvent tank, 5 ... Solvent recycling device, 6 ... Carrier, 8 ... Housing, 8A ... Opening 8B ... … Solvent pool, 9 …… Shutter, 10 …… Door 13 …… Rail, 14 …… Guide, 15 …… Floor surface 17 …… Nozzle mounting tube, 18 …… Chain wheel 19 …… Drive motor, 20 …… Chain 21,22 …… Nozzle, 23 …… Rotary joint 40 …… Circulation pipe, 41 …… Discharge pipe 42 …… Supply pipe

Claims (1)

(57) [Claims] 1. A nozzle mounting pipe having a multiple pipe structure, a plurality of nozzles connected to each of the multiple pipes constituting the nozzle mounting pipe, and a different fluid connected to each of the multiple nozzles connected to the nozzle mounting pipe. An injection device comprising a rotary joint for supplying and a rotary device for rotating the nozzle mounting pipe about its axis.