JP2010051947A - Method and apparatus for rinsing holes/capped-holes of small diameters in article surface - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rinsing apparatus capable of rinsing surely the insides of fine holes/capped-holes of small diameters with water of a small quantity but without pursuing the individual positions of the holes/capped holes. <P>SOLUTION: The rinsing apparatus includes a spray nozzle body (1), in which injection nozzles (2) of a nozzle diameter of 0.3 mm are zigzag arranged at a pitch of 20 mm in a vertical direction perpendicular to the transfer direction and at a pitch of 48 mm in the feeding direction individually over and under the conveyor face of a slat conveyor system (C) for transferring an article (B) at a speed of 1.0 m/minute. The spray nozzle body (1) is oscillated at 600 cycles per minute in the vertical direction perpendicular to the transfer direction, thereby to rinse the insides of holes/capped-holes with its spray. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is a technique for cleaning the inside of a hole having a small diameter of about M3, a bag hole, or a tapped hole provided on the surface of an article such as a small electronic device using cleaning water.

Conventionally, there are screw holes, bag holes, and tap holes for mounting and connecting parts on the surface of small equipment articles, and the bottom of these holes is the liquid of cutting powder, dust, processing liquid or cleaning liquid during processing. The rest remains. There is a problem that the residue of the liquid / chip powder pops out during the manufacturing process and during storage / use to contaminate the manufactured product.
Therefore, in order to manufacture a high-precision product, after the product has been washed with water, finishing cleaning using IPA or alternative chlorofluorocarbon is required.

However, cleaning with IPA or alternative chlorofluorocarbons increases labor, time and cost. Nevertheless, the cleaning did not meet the recent requirements for cleanliness.
Although there is a method of drying with an air blower, it is necessary to create an air blow flow smaller than the diameter of the bag hole in order to send the air flow into the bag hole, but it is difficult to make the air blow narrowed to 1 mm or less. there were.
Even if an extremely fine air blow of 1 mm or less can be generated, it is difficult to control the position so that the air blows into the hole of the bag hole, and there is a problem that the amount of air becomes large.

There is also a method of cleaning the inside of the hole / bag hole with a fountain flow of washing water, but for a fine hole / bag hole such as M3, the water flow having a diameter larger than the diameter of the hole / bag hole opening. Even if it is applied, the water will only fill the inside of the hole / hole and will not flow as a water flow, no water will flow inside the hole / hole, and the discharge of residual liquid, dust, and cutting powder will be insufficient. Met.
Even if the diameter of the water flow is narrowed to be smaller than the diameter of the opening, for example, 1 mm, it becomes difficult to apply this thin water flow to the opening of the hole / bag hole, and the inside of the hole / hole is not sufficiently washed without hitting the opening. However, the cleaning was incomplete.

  The next problem is that the positions of the holes and the bag holes of the electric appliance and the intermediate product change for each product, and a plurality of holes and bag holes are attached at various positions. Therefore, it takes time and effort to feed an extremely fine water flow into the bag hole, and high accuracy is required. In addition, there is a problem that the cleaning operation takes time.

Next, a method of fountain to fill the surface of the article entire corner without fountain jetting nozzles of the nozzle diameter phi _n (hereinafter, referred to as fill system) is also contemplated, and the transport speed v of the article if this Then, oscillation frequency of the jet nozzles, v / phi or considerably higher frequency of about _n, or significant than the spacing of the vertical jet nozzle swings Fuhaba large stroke, quite smaller vertical distance than Fuhaba If there is no fountain with many jet nozzles, it is impossible to spray water without any corners. Increasing the oscillation frequency or increasing the stroke amount increases the mechanical load of the oscillating fountain device. Especially when the conveyance speed v of the article to be cleaned is increased, or when the diameter φ ₀ of the opening of the hole / bag hole is reduced and the nozzle diameter φ _n of the ejection nozzle is also reduced, a very high oscillation frequency or a long stroke amount However, there was a problem that it became impractical. Further, when the number of ejection nozzles is increased, there is a problem that cleaning water to be used increases.
Japanese Patent Laid-Open No. 2003-37351

  The object to be solved by the present invention is to solve these conventional problems, to reliably clean small-diameter / fine holes / bag holes with a low oscillation frequency of the ejection nozzle, and to provide individual holes / bag holes. The inside of the hole and bag hole can be reliably cleaned without following the position of the water, so precise control of the position of the water flow is not required, and the cleaning speed is increased by increasing the conveyance speed for cleaning the article and the amount of water used Another object of the present invention is to provide a method and apparatus for cleaning small-diameter holes and bag holes on the surface of an article.

The configuration of the present invention that solves this problem is as follows.
1) A method for cleaning the inside of a hole / bag hole of an article having a small-diameter hole or a bag hole on the surface, provided with a conveyor device for sending the article to be cleaned in a certain direction, and using the washing water as a thin thread-like water stream A plurality of fountain nozzle bodies provided with a plurality of fountain nozzle bodies to be ejected in the same direction are arranged so as to face the surface of an article having a hole or a bag hole of an article to be fed, and the fountain nozzle body has an ejection nozzle, A plurality of nozzles are provided in each of a vertical direction that is orthogonal to the feed direction of the article and is substantially parallel to or nearly parallel to the surface with the holes / bag holes, and a transverse direction that is the feed direction, and the nozzle diameter φ of the ejection nozzle Equipment equipped with rocking means for reciprocating the fountain nozzle body in the vertical direction perpendicular to the article feed direction by making _n smaller than 0.66 times the minimum diameter φ ₀ of the opening of the hole / bag hole for washing Use
A plurality of thread-like water streams are ejected from the ejection nozzle of the fountain nozzle body toward the surface of the article while feeding the article at a speed v by the conveyor device, and the entire fountain nozzle body is perpendicular to the article feeding direction by the swinging means. The nozzle is reciprocated at a high frequency f in the direction, and the fountain nozzle body is swung so that the longitudinal fountain width of the fountain flow from the plurality of ejection nozzles covers the entire area of the maximum longitudinal width of the article surface to be cleaned. By positioning the position or the amount of oscillating stroke of the fountain nozzle body and setting the reciprocating motion by the oscillating means to a high frequency, the water flow from the squirting nozzle surely flows into the inside of the hole / bag hole and 2) Cleaning method inside the small-diameter hole / bag hole characterized by being able to wash well 2) Jets arranged in two sets of lattices with the same interval between the jet nozzles in the vertical direction on the fountain nozzle body Nozzle group is provided In addition, the small nozzles according to 1) are arranged in a staggered manner so that the vertical position of the ejection nozzles of the other group is in the middle of the vertical positions of the ejection nozzles of the one group and the lateral positions are different. Cleaning method for the inside of the hole / bag hole 3) The frequency of oscillation of the fountain nozzle body by the oscillation means is f, the feed speed of the article is v, and the opening of the hole / bag hole with the smallest diameter on the surface of the article (1), where the actual diameter of the nozzle is φ ₀ and the nozzle diameter of the ejection nozzle is φ _n , the high frequency satisfying the inequality of (v / φ _n )>f> (v / φ ₀ ) Or 2) The cleaning method for the inside of the small-diameter hole / bag hole according to any one of 4) The frequency f of the fountain nozzle body by the oscillating means is set to v, the article feed rate is v, and the hole / bag with the smallest diameter the actual diameter phi value plus the length of the nozzle diameter phi _n of the jet nozzle to ₀ φ = φ ₀ + φ _n of the opening of the bore As no minimum mouth only diameter _{φ, (v / φ n)} >f> (v / φ) inequality has a high frequency which satisfies the 1) or 2) according to any one diameter of the hole-blind hole Internal cleaning method 5) The fountain flow of the fountain nozzles arranged in the lateral direction where the fountain width overlaps moves from the lateral position of the opening of the smallest diameter hole / bag hole to the lateral position of the end of the opening. The oscillation frequency or the arrangement of the ejection nozzles is determined so that the sum of the phase angle range of the oscillation of the fountain nozzle body before passing through covers all phases of 0 ° to 360 °, either 1) or 2) 6) Cleaning method for the inside of the small-diameter hole / bag hole 6) The minimum number M of spray nozzles that can cover the entire phase of 0 ° to 360 ° by a plurality of lateral spray nozzles overlapping the fountain width. Body swing frequency f, article feed speed v, minimum aperture / bag opening actual When the nozzle diameter phi _n of the jet nozzle diameter phi _{0 of, (v / φ n)>} f> (v / M / φ 0) the inequality was established frequency f of 5) small diameter holes according -Cleaning method for the inside of the bag hole 7) The minimum number M of ejection nozzles that can cover the entire phase of 0 ° to 360 ° by a plurality of lateral ejection nozzles that overlap the fountain width, and the oscillation frequency of the fountain nozzle body f, the feed speed v of the article, the actual diameter φ ₀ of the hole with the smallest diameter and the opening of the bag hole, plus the length of the nozzle diameter φ _n of the ejection nozzle, φ = φ ₀ + φ _n The method for cleaning the inside of a small-diameter hole / bag hole as described in 5) above, wherein the assumed diameter φ is the frequency f at which the inequality of (v / φ _n )>f> (v / M / φ) is established 8) Fountain nozzle The jet nozzles of the body are arranged at equal pitches in the vertical direction, and the oscillating straw The method of cleaning the inside of the small-diameter hole / bag hole according to any one of 1) to 7) described above as the quantity 9) The value of the frequency f of the reciprocating motion of the fountain nozzle body is set in the lateral direction in which the article overlaps the fountain width. The method for cleaning the inside of a small-diameter hole / bag hole according to any one of 1) or 2), wherein the article is varied with time within the time required to pass through all of the ejection nozzles 10) Articles 1) to 9) Washing multiple times using the surface hole / bag hole cleaning method, using water / warm water as the first wash water or a solution containing a cleaning solution in it, and warm pure water as the second wash water A method for highly cleaning holes and bag holes on the surface of articles 11) having a small diameter hole or bag hole on the surface. A cleaning device for cleaning the inside of a hole / bag hole of an article, A fountain nozzle body provided with a plurality of jetting nozzles for jetting washing water as a thin thread-like water stream facing the surface of an article sent by the conveyor device in a predetermined direction so that the jetting directions are the same direction And oscillating means for reciprocating the fountain nozzle body in a vertical direction perpendicular to the article feed direction, the jet nozzle of the fountain nozzle body being perpendicular to the article feed direction and having a hole / bag hole The minimum diameter φ ₀ of the opening of the hole / bag hole that is provided in plural in each of the vertical direction that is parallel or almost parallel to the horizontal direction and the horizontal direction that is the feed direction, and that cleans the nozzle diameter φ _n of the ejection nozzle The cleaning device for small-diameter holes / bag holes on the surface of the article, wherein the vertical swing stroke of the swing means is equal to or greater than the length of the interval between the vertical ejection nozzles. is there.

In the present invention, the nozzle diameter φ _n is smaller than 0.66 times the minimum diameter φ ₀ of the hole / bag hole for cleaning the article surface, and the fountain nozzle body has a plurality of ejection nozzles in the longitudinal and lateral directions. Is reciprocated at a swing frequency (number of cycles) within a required range in a direction orthogonal to the feed direction of the article to be cleaned, so that the thread-like shape from the ejection nozzle is smaller than the aperture of the hole / bag hole. The water flow is reliably traversed at least once by the opening of the hole / bag hole on the surface of the article, so that the inside of the hole / bag hole can be reliably washed. Moreover, a plurality of ejection nozzles are provided in the vertical direction perpendicular to the transverse direction of the feed direction, and the fountain width of the ejection nozzle covers the entire longitudinal width of the article surface, so that the position of the hole / bag hole on the article surface is However, it can be cleaned (without following the hole / hole position). Furthermore, according to the present invention, it is possible to clean the inside of the hole / bag hole on the surface of the article more reliably or at a low oscillation frequency by overlapping the fountain widths of the plurality of jet water.
In addition, since the oscillation frequency f of the present invention can be cleaned at a frequency value much lower than that of the fountain of the painting method, there is a margin that can increase the processing speed by increasing the conveyance speed v of the article. The amount of washing water consumed can be reduced by increasing the conveyance speed.

(Conveyor device)
As the conveyor device of the present invention, a conveyor having a structure in which a water flow ejected by a slat conveyor, a net conveyor or the like is easy to pass and discharge is mainly employed.
(Blowout nozzle diameter)
The diameter of the thread-like jet water flow from the jet nozzle is set to be smaller than 0.66 times the aperture diameter of the smallest one of the small-diameter holes / bag holes on the article surface. In many cases, high pressure water of about 2.0 MPa is ejected from an ejection nozzle having a diameter of about 1 mm.
(Arrangement of ejection nozzles)
In addition, the vertical and horizontal arrangement state of the ejection nozzles is often a lattice shape or a staggered shape.
The horizontal pitch (interval) in the feed direction of the ejection nozzles may be constant, or the phase may be changed to change the phase at which water flow from each ejection nozzle begins to be received even at the same frequency of oscillation. By changing the start phase, cleaning can be performed more reliably.
As a method of receiving the holes / bag holes (openings) at different phases from the water flow of the plurality of jet nozzles in the feed direction receiving the water flow from the jet nozzle of the fountain nozzle body, the horizontal interval between the jet nozzles can be set as follows. Possible by changing the position in the vertical direction like zigzag, changing the frequency f, or changing the phase by changing the position of the jet nozzles in the zigzag or vertical direction. It is.

(Number and interval of ejection nozzles)
The number of ejection nozzles and the interval between the ejection nozzles are related to the amount of cleaning water used, and the amount of water used generally increases as the number of ejection nozzles increases. An appropriate interval is set in relation to the number of times of washing, the amount of water used, the oscillation frequency, and the amount of stroke so that the number of times of washing by the fountain flow in the hole / bag hole becomes appropriate.

(Blowing nozzle diameter and oscillation frequency)
First, as a condition for the water flow from the jet nozzle to flow into the opening of the hole / bag hole and smoothly return to be discharged, the diameter φ _n of the jet nozzle (that is, the diameter of the cross section of the water flow) is the hole / bag. Not only is the diameter of the hole opening φ smaller than ₀ , but also 30% of the cross-sectional area of the water flow in consideration of the viscosity of the water in the outer space of the water flow inside the hole / bag hole compared to the cross-sectional area of the water flow. A larger cross-sectional area was secured in the passage area of the reflux water. This condition is a _{1.3 * π * (φ n /} 2) 2 <(π * (φ 0/2) 2 -π * (φ n / 2) 2), now √2.3φ _n <φ The condition is ₀ , and the diameter condition of the ejection nozzle is φ _n <0.66φ ₀ . In addition, as an upper limit condition of the oscillation frequency of the present invention, the inequality of (v / φ _n )> f is satisfied, and the frequency is set lower than that of the painting method.

(Relationship between the length of one wavelength of oscillation of the ejection nozzle and the minimum aperture)
The diameter of the smallest one of the small-diameter holes / bag holes on the surface of the article is φ ₀ , the conveyance speed of the article is v, and the oscillation (reciprocating) frequency of the fountain nozzle body is f Then, as long as f> (v / φ ₀ ) is satisfied, as can be seen from FIG. 6, the length of one wavelength of oscillation of the fountain nozzle body is smaller than the aperture diameter φ ₀ , and the opening is in the vertical direction. Since the opening receives the trajectory of the fountain nozzle body for one wavelength at any position of the fountain, the fountain nozzle flows into the opening at least once with respect to one ejection nozzle and can be reliably washed.

(Consider the condition of the nozzle diameter considering the nozzle diameter of the ejection nozzle)
Furthermore, the minimum actual value obtained by adding the length of the nozzle diameter phi _n of the jet nozzle diameter phi ₀ of holes, blind holes opening diameter as the minimum Deemed diameter of the opening phi, swinging of (reciprocating) If the frequency f satisfies the condition of f> (v / φ), as shown in FIG. 6, the assumed diameter φ in consideration of the nozzle diameter φ _n is _equal to the diameter φ ₀ of the smallest opening of the hole / bag hole. It is equal to or larger than the advance width (v / f) conveyed while the body is swung by 360 ° of the −wavelength, so that the thread-like water flow from the ejection nozzle can surely open the opening of the hole / bag hole. Pass through and clean the holes and pouch holes with water flow. Therefore, it is possible to make the oscillation frequency lower than the above conditions.

The above frequency condition and washing conditions, as shown in FIG. 6, in consideration of the nozzle diameter phi _n of the jet nozzle, if the actual hole-minimum diameter value phi ₀ of blind holes, no minimum only diameter phi = φ ₀ + φ _n .

(Phase passing through fountains and openings of multiple nozzles)
Even in the case of f <(v / φ ₀ ) or f <(v / φ), the fountain width of the ejection nozzle overlaps, and the phase is changed to fountain the hole / bag hole, and the sum of the phases is 0 If the entire number of phases from 0 ° to 360 ° is covered, and the minimum number of ejection nozzles that can cover the entire phase from 0 ° to 360 ° is M, the frequency f is an inequality (v / φ _n ). >F> (v / M / φ ₀ ) or inequality (v / φ _n )>f> (v / M / φ) inequality should be satisfied, and even if the frequency f is further reduced, reliable cleaning can be achieved. Can be done. Or even if the frequency is constant, it means that it can be surely cleaned even if the feeding speed v of the conveyor device is increased to increase the processing capacity.

  The numerical conditions of these claims 3, 4, 6, and 7 are inequalities expressed by the following equation (1).

As described above, the inventions of claims 3 and 4 are numerical conditions that can be surely cleaned only by one column of the ejection nozzles (referred to as a single vertical column). In this case, the reason why there are a plurality of ejection nozzles in the lateral direction (conveyance direction) is to increase the degree of cleaning by cleaning more reliably or more times.
Further, the inventions of claims 6 and 7, which are cited in claim 5, ensure the cleaning by combining a plurality of ejection nozzles with other ejection nozzles in the lateral direction (conveying direction) of the ejection nozzle. It is a numerical condition to be able to do. In this case, there is an advantage that the lower limit oscillation frequency can be lowered (or the conveyance speed can be increased).
Any one of the numerical conditions for reliably cleaning the vertical single row of the inventions of claims 3 and 4 or the conditions of claims 6 and 7 using a plurality of lateral ejection nozzles may be satisfied.
Further, in the numerical conditions in claims 3, 4, 6, and 7, it is possible to use either the minimum aperture φ ₀ or the assumed aperture φ = φ ₀ + φ _n , but the minimum aperture φ under severe conditions may be used. If it is designed using ₀ , it is more certain.

In addition, in the numerically limited invention of the present invention, as the upper limit of the oscillation frequency f, by providing a plurality of ejection nozzles in the lateral direction with an insufficient filling method, the inside of the opening of the hole / bag hole is roughly cleaned stochastically. It may be advantageous compared with the fluctuation of the frequency of v / (2φ _n ) that can be made. That is, the following formula 2 may be used.

In addition to these, reliable cleaning can also be performed by a combination with means such as the presence of the sub-vertical jet nozzle row and frequency fluctuation.
In practice, the necessary (minimum) frequency of the above conditions can be further reduced by combining them. Alternatively, the feed speed v can be increased.

For example, as another method for reliably cleaning, the frequency of the fountain nozzle body is changed to the frequency f of the fountain nozzle body while receiving the water flow of all of the fountain nozzle bodies in which the opening of the hole / bag hole overlaps the lateral fountain width. By giving fluctuations (variations) of ± Δf, the start phase at which the ejection nozzle starts fountain and the length of one wavelength of oscillation of the fountain nozzle body at that time change with respect to the opening of the hole / bag hole. The probability of causing the nozzle to flow into the opening can be increased. By setting the frequency fluctuation to 10% or more, there is a high probability that the water flow will flow into the opening, and reliable cleaning can be performed.
By combining the fluctuation of the frequency f and the appropriate position of the ejection nozzle, water flows from a plurality of ejection nozzles can be given to the same hole / bag hole opening at different phases. You can also

  Further, the jet nozzles of the vertical jet nozzle row Y are arranged at intermediate positions of the pitch of the jet nozzles of the vertical jet nozzle row X in the vertical direction in which the jet nozzles are offset in the horizontal direction of the vertical jet nozzle rows X as in a staggered arrangement. If provided, the same hole / bag hole is flushed with a plurality of jet nozzles whose positions are changed in the vertical direction and washed with water, so that more reliable washing is achieved.

The present invention can also be applied to the case where the article is moved circularly or circularly. In that case, the circumferential direction (trajectory direction of the article feed) is the feed direction (lateral direction), the radial direction (center direction of curvature of the feed trajectory) is the direction perpendicular to the feed direction (vertical direction), and the fountain nozzle body A plurality of ejection nozzles are also provided in the radial direction and the circumferential direction, and the fountain nozzle body reciprocates in the radial direction so that the fountain widths in the vertical direction of the plurality of ejection nozzles overlap. The feed speed of holes such as holes and bag holes in the fountain width where each jet nozzle fountains is a peripheral speed, and the feed speed varies depending on the radial position (vertical position) of the hole. Reliable cleaning is achieved if the frequency f of the reciprocating motion of the nozzle body in the radial direction, the hole diameter φ ₀ of the hole / bag hole, the assumed diameter φ, and the phase difference that covers all phases from 0 ° to 360 ° are satisfied. It can be secured. The present invention includes such a thing.

Embodiment 1 of the present invention will be described below with reference to the drawings.
The article to be cleaned according to the first embodiment shown in FIGS. 1 to 3 is an HDD case of an electric device, and cleans the bag holes and screw holes of about M3 provided by metal processing on the upper and lower surfaces of the case. In this example, the upper and lower fountain nozzle bodies are swung toward the upper surface and the lower surface of the article to be cleaned while being linearly conveyed by a slat type conveyor device.

FIG. 1 is a plan view showing a cleaning apparatus used in Example 1. FIG.
FIG. 2 is a side view of the cleaning apparatus according to the first embodiment.
FIG. 3 is an explanatory view of the arrangement of the ejection nozzles in the fountain nozzle body of the first embodiment.
FIG. 4 is an explanatory diagram showing the trajectory of the ejection point of the water flow of the ejection nozzle onto the surface of the article.
FIG. 5 is an explanatory view showing a process of cleaning the inside of the hole by the water flow of the ejection nozzle.
FIG. 6 is an explanatory diagram showing the relationship between the trajectory of the water flow of the ejection nozzle and the opening of the smallest hole.
FIG. 7 is an explanatory diagram showing that the phase with respect to the fountain opening of three ejection nozzles in the horizontal direction overlapping the fountain width in Example 1 covers 0 ° to 360 °.
FIG. 8 is an explanatory diagram viewed from the side, illustrating the conversion mechanism of the reciprocating device according to the first embodiment.
FIG. 9 is an enlarged cross-sectional view of the eccentric cam according to the first embodiment.
FIG. 10 is an explanatory diagram showing a freely reciprocating carriage with the water pipe of Example 1 attached thereto.
FIG. 11 is an enlarged plan view showing an eccentric boss attached to the rotation output shaft of the reciprocating motor.
FIG. 12 is an enlarged plan view showing an end plate of the eccentric boss.
13-16 is explanatory drawing which shows operation | movement of a conversion mechanism.

In the figure, A is a water-based cleaning device used in Example 1, B is an HDD case (also referred to as an article) of a hard disk of an electronic device that is an article to be cleaned, and C is a slat type conveyor that conveys the HDD case B. 1 and 5b are components of the washing apparatus A by water flow, 1 is a pair of fountain nozzle bodies arranged so as to oppose the upper and lower positions of the conveyor apparatus C, and 2 is a fountain nozzle body. The nozzles are arranged in a staggered pattern, and the nozzle diameter of the nozzles (nozzle diameter) is 0.3 mm. 3 is a water storage part for temporarily storing the cleaning water to each ejection nozzle 2, 4 is a water pipe that sends the cleaning water to the water storage part, 4 a is a water supply hose that is connected to the water pipe and can support reciprocating motion, and 5 is a water pipe 4. A reciprocating device for reciprocating the water storage section 3 and the fountain nozzle body 1 with a 20 mm stroke (amplitude of 10 mm) in a horizontal direction perpendicular to the feeding direction of the conveyor device C, 5a is provided on the fixed base 6 of the reciprocating device. An attached reciprocating motor, 5a ₁ is a rotary output shaft with a key of the motor, 5b is a reciprocating table which reciprocates by attaching a water pipe 4, and 5b ₁ is along a reciprocating rail 6a provided on the installation fixing base 6. The linear guide 5c for moving the carriage 5b back and forth is a conversion mechanism using an eccentric cam 5d that converts the rotation of the motor 5a into a reciprocating motion. Eccentric cam 5d is a key shaft end of the rotary output shaft 5a ₁ is fitted into the key groove mounted to eccentric shaft end with the circular eccentric boss 5d _1, the outer periphery of the eccentric boss 5d ₁ to a bearing 5d ₂ was Shugi, is fixed to the rotary output shaft 5a ₁ and eccentric boss 5d ₁ with a screw _5d 4, 5d ₅ covered the head of the eccentric boss 5d ₁ as the bearing does not come off It is formed from the end plate 5d ₃ Prefecture. Further, the conversion mechanism 5c is in contact with the eccentric rotating eccentric cam 5d (bearing 5d ₂ ) at the front and rear, and a contact plate 5e having an opening 5e ₁ that allows the eccentric cam 5d to be rotated inward. From the carriage 5b to which the water pipe 4 and the contact plate 5e are attached, the rail 6a on the installation fixed base 6 for reciprocating the carriage 5b, and the linear guide 5b ₁ sliding on the rail 6a attached to the carriage 5b. It has become.
In the figure, 6 is an installation fixing base for installing the reciprocating device 5, and 6a is a pair of left and right rails provided on the installation fixing base.
The swinging means of the water pipe 4 according to the first embodiment includes a reciprocating device 5 having a conversion mechanism 5c and a reciprocating motor 5a for operating the reciprocating device 5a.
Reciprocation of the fountain nozzle 1 of this embodiment, when the motor is rotated 5a, rotates the rotation output shaft 5a _1, eccentric boss 5d ₁ mounted with 10mm eccentric to the rotation output shaft 5a ₁ is The bearing 5d ₂ attached to the outer periphery of the eccentric boss 5d ₁ is rotated around the eccentric center by rotating about the eccentric position of the screw 5d ₅ , and the abutting plate 5e contacting this is attached. The carriage 5b reciprocates the water pipe 4 in the pipe direction with an amplitude of eccentricity ± 10 mm.
The conversion mechanism 5c in FIG. 8, the eccentric cam 5d in FIG. 9, the carriage 5b in FIG. 10, in FIG. 11 the eccentric boss 5d _1, the end plates 5d ₃ in FIG. 12, converted to 13-16 mechanism Shows the operation.
Cleaned object of the first embodiment, a HDD case B, the minimum diameter phi ₀ of the aperture hole h, such as blind holes, threaded holes provided on the surface of the HDD case B is 1.4 mm.

The fountain nozzle body 1 used in the first embodiment is provided with three vertical jet nozzle rows X each consisting of six vertical 20 mm jet nozzles 2 having an equal pitch of 48 mm in the horizontal direction at a pitch of 48 mm. Further, a vertical ejection nozzle row Y provided with five vertical ejection nozzles 2 at an intermediate position in the longitudinal direction of the ejection nozzle 2 of the longitudinal ejection nozzle row X and at a position 25 mm offset from the longitudinal ejection nozzle row X in the lateral direction, and further laterally. Two vertical jet nozzle rows Y are provided at equal pitches of 48 mm in the direction, and three vertical jet nozzle rows Y are provided in total, and the jet nozzles 2 of the vertical jet nozzle rows X and Y are in a staggered arrangement state. A staggered arrangement in which two groups of jet nozzle groups in a grid arrangement of three horizontal rows of vertical jet nozzle rows X and jet nozzle groups of a grid arrangement of three horizontal jet nozzle rows Y are offset vertically and horizontally It is an example.
Nozzle diameter phi _n of each ejection nozzle 2 is nozzle diameter of 0.3mm diameter.

The frequency f of reciprocation (swing) in the direction perpendicular to the feed direction of the article B of the fountain nozzle body 1 is 600 times / minute and 10 times / second, and the amplitude of the reciprocation is 10 mm and 20 mm. Stroke (full width). Further, the feed speed v of the article B of the conveyor device C is 16.67 mm / sec at 1.0 m / min. Further, although there are a plurality of screw holes / bag holes h on the surface of the article B, the actual minimum diameter φ ₀ is 1.4 mm.

  The arrangement of the ejection nozzles 2 of the fountain nozzle body 1 is a staggered pattern, with six vertical nozzle rows X and five vertical nozzle rows Y alternately arranged in three rows in the vertical direction at intervals of 20 mm. They are provided at an equal pitch of 24 mm. The ejection nozzles 2 of the vertical five ejection nozzle row Y are provided at a longitudinal intermediate position of the ejection nozzles 2 of the longitudinal six ejection nozzle row X.

The three jet nozzles 2 in the horizontal direction of the six vertical jet nozzle rows X have the same fountain width 20 mm (oscillation width 10 mm). Similarly, all three horizontal fountain widths of the five vertical ejection nozzle rows Y overlap. Further, the jet nozzles 2 of the five vertical jet nozzle rows Y at the vertical positions adjacent to the vertical jet nozzles 2 of the six vertical jet nozzle rows X overlap each other by half of the fountain width.
Moreover, the vertical fountain width of the ejection nozzles 2 of the ejection nozzle rows X and Y covers the entire area of the maximum vertical width of the surface of the article B.

Specifications v, f, φ ₀ , φ, φ _n of the present embodiment are as follows.
-Article feed speed = v = 1.0 m / min = 16.67 mm / sec
・ Oscillation frequency = f = 600 times / min = 10 times / sec
・ Actual minimum aperture of hole / bag hole = φ ₀ = 1.4 mm
・ Nozzle diameter of ejection nozzle = φ _n = 0.3 mm
-Wavelength length = v / f = 1.667 mm
The number M = 2 of the smallest ejection nozzles covering the entire phase of 0 ° to 360 ° of the ejection nozzles having overlapping fountain widths by the lateral ejection nozzles of the ejection nozzle rows X and Y
・ Deemed diameter φ = φ ₀ + φ _n = 1.7 mm
・ V / φ ₀ = 16.77 / 1.4 = 11.9
V / φ = v / (φ ₀ + φ _n ) = 9.8
V / M / φ ₀ = 5.95
V / M / φ = v / M / (φ ₀ + φ _n ) = 4.9
・ V / φ _n = 55.6
・ V / 2 / φ _n = 27.8

The condition inequalities of the present invention are as follows, and the form of the embodiment sufficiently satisfies the conditions of the present invention, and is reliably washed at least once with a fountain.
・ Condition of nozzle diameter φ _n of ejection nozzle
φ _n <0.66φ ₀
φ _n = 0.3 mm <0.66 * 1.4 mm = 0.92 mm
・ Upper frequency condition
v / φ _n > f
55.6> 10 (Hz)
For v / 2 / φ _n > f
v / 2 / φ _n = 27.8> 10 (Hz)
・ Conditions for deemed diameter
f> (v / (φ ₀ + φ _n ))
10 (Hz)> 9.8
・ Conditions when 360 ° phase is covered with two jet nozzles
f> v / M / (φ ₀ + φ _n ) or f> v / M / φ ₀
10 (Hz)> 4.9 or 10 (Hz)> 5.95

Details will be described below.
(In the case of a design that does not use the actual φ if / regarded caliber with ₀₎
The advance phase angle θ of the fountain nozzle body 1 while the center of the squirting nozzle passes through the opening φ ₀ having the smallest diameter of the hole / bag hole sent at the speed v is φ ₀ / v * 360 ° * f 302 °.
Further, since the lateral ejection nozzles 2 of the ejection nozzle rows X and Y are 48 mm in the horizontal position of 0 mm, 48 mm and 96 mm, the fountain starts at the tip of the lateral ejection nozzle opening. The starting phase and phase angle range are as follows.

よって、この横３列の噴出ノズル２でもって各位相角度範囲の総和は０°〜３６０°の全位相を２回覆う。

Therefore, the sum of the phase angle ranges covers the entire phase of 0 ° to 360 ° twice with the three rows of ejection nozzles 2.

Moreover, f> (v / M / φ ₀ ) satisfies M = 2, V = 16.67 mm / sec, φ ₀ = 1.4 mm, and f = 10 times / sec> 5.95. . Furthermore, since this overlap is satisfied in each of the ejection nozzle rows X and Y, it can be washed a total of four times or more.

Thus, if the sum of the phase angle ranges that pass through the openings of the jet nozzles 2 that overlap the fountain widths covers all phases of 0 ° to 360 °, the openings that pass through the fountain widths are the fountains of the jet nozzles 2. The flow will always cross the opening more than once. In addition, since the fountain width of the ejection nozzle 2 in the vertical direction covers the maximum vertical width of the surface of the article to be cleaned, the hole h of the hole / bag hole is surely located at any position on the surface of the article B. A thread-like fountain flow with a diameter of 0.3 mm smaller than 0.92 mm, which is 0.66 times 1.4 mm of the actual diameter φ ₀ of the opening, flows into the hole h of the hole / bag hole and enters the hole bottom Reflux to be smoothly discharged from the opening and cleaned.

The flow of water when the fountain flow crosses the opening is shown in FIGS. The water cross-sectional area of the fountain flow is 0.3 mm in diameter, approaching from one side to the minimum diameter φ ₀ of 1.4 mm, the water flow enters from one end of the opening, the water flow is discharged from the other end, and the water flow is Water moves to the inner tub and oil, dirt, and chips in the inner space of the opening can be eliminated. If it flows in at the center of the opening, it is discharged as circular return water and washed.

The six vertical nozzle rows X and the five vertical nozzle rows Y are washed across the opening four times or more twice each, so that reliable cleaning can be performed. In addition, the other hole / bag hole opening larger than the minimum diameter φ ₀ can be more reliably cleaned.

(When considering the nozzle diameter φ _n of the ejection nozzle / in the case of design using the assumed diameter φ)
In the above example, when the nozzle diameter φ _n of the ejection nozzle is taken into account, the aperture is only the diameter φ = φ ₀ + φ _n , and φ ₀ is the actual minimum aperture diameter φ ₀ 1.4 mm. φ = 1.70 mm, and the advance phase angle passing through the opening of the assumed diameter is 367 °, which exceeds 360 ° and does not take into account the phase of the fountain in the opening (any of the lateral directions of the ejection nozzle 2) Regardless of the position / interval), all the horizontal ejection nozzles 2 pass through the openings. Therefore, in practice it can be cleaned without considering the distance of lateral jet nozzle 2 when considering jetting nozzle phi _n (lateral position), or a total of six times within the opening in the fountain flow in the example embodiment. This deemed diameter φ is a phenomenon that is closer to reality.
Thus, since the assumed diameter φ can be adopted, the conditions of the oscillation frequency f, the article feed speed v, and the lateral position of the ejection nozzle can be relaxed. The frequency f may still be slightly lower. (Or the feed rate may be increased.)

  If the cleaning method of Example 1 is repeatedly cleaned by changing the water quality to cleaning water, warm pure water, or ultrapure water containing a cleaning agent as cleaning water, cleaning with a higher degree of cleaning can be performed.

(Other examples)
As another method of the present invention, if the frequency f is increased so as to satisfy f> (v / φ), the diameter φ with only the smallest opening becomes equal to or longer than the −wavelength length of the oscillation, and the lateral direction is increased. A single ejection nozzle (only one vertical ejection nozzle array) can cross the opening.

Therefore, the invention of covering the entire phase of 0 ° to 360 ° with the plurality of lateral ejection nozzles of claims 5 and 6 is mainly f <(v / φ) or f <(v / φ _0. ).

  When the fountain widths of the lateral ejection nozzles overlap as in the first embodiment and the M ejection nozzles cover the entire phase of 0 ° to 360 °, the minimum number M of ejection nozzles necessary for the covering is M. The frequency f value divided by can be used. If the feed speed v is constant, the oscillation frequency can be reduced. Alternatively, if the frequency is made constant, the feeding speed can be increased, the cleaning speed can be increased, and the amount of cleaning water can be reduced.

  Furthermore, as another method of the present invention, the oscillation frequency f is fluctuated while the opening passes through the fountain nozzle body, and the oscillation frequency f is changed for each ejection nozzle with respect to holes such as holes and bag holes. It is possible to fountain with the locus of the wavelength of λ, so that the fountain can be fountained on the surface of the article without any corners and can be reliably washed.

In the present invention, the entire surface of the article, compared to the oscillation frequency f _z when the fill method is to fill in the fountain ejection nozzle of the nozzle diameter phi _n, made quite small, the moving means The load can be reduced. Fill oscillation frequency f _z, since it becomes a frequency of about approximately v / phi _n from fill condition at the position of top dead center or bottom dead center of the oscillation frequency, the oscillating frequency f of the present invention, v requires a low value of degree 1 / 3-1 / 8 of the frequency / phi _n. Moreover, the frequency of the present invention compared with the frequency of v / (2 [phi _n) of approximately fill system can be dispensed at a lower value of degree 1 / 2-1 / 4.

  The present invention can also be used for cleaning articles such as small electric parts, micro mechanical parts, precision plastic products / parts, holes, bag holes, or concave portions on the surface. It can also be used for cleaning micropores and grooves in animals and plants, or for supplying water to details.

1 is a plan view showing a cleaning device used in Example 1. FIG. It is a side view of the washing | cleaning apparatus of Example 1. FIG. It is arrangement | positioning explanatory drawing of the ejection nozzle in the fountain nozzle body of Example 1. FIG. It is explanatory drawing which shows the locus | trajectory of the ejection point to the surface of the articles | goods of the water flow of an ejection nozzle. It is explanatory drawing which shows the process of the washing | cleaning inside the hole by the water flow of an ejection nozzle. It is explanatory drawing which shows the relationship between the locus | trajectory of the water flow of an ejection nozzle, and opening of the minimum hole. It is explanatory drawing which shows covering the phase with respect to the opening of the fountain of the three ejection nozzles of the horizontal direction which overlap the fountain width in Example 1, and 0 degree-360 degrees. It is explanatory drawing seen from the side surface which shows the conversion mechanism of the reciprocating device of Example 1. FIG. It is an expanded sectional view of the eccentric cam of Example 1. It is explanatory drawing which shows the reciprocating carriage with which the water pipe of Example 1 was attached. It is an enlarged plan view which shows the eccentric boss | hub attached to the rotation output shaft of the motor for reciprocation. It is an enlarged plan view which shows the end plate of an eccentric boss | hub. It is explanatory drawing which shows operation | movement of a conversion mechanism. It is explanatory drawing which shows operation | movement of a conversion mechanism. It is explanatory drawing which shows operation | movement of a conversion mechanism. It is explanatory drawing which shows operation | movement of a conversion mechanism.

Explanation of symbols

A Cleaning device B HDD case (object to be cleaned)
C Conveyor device X, Y Vertical jet nozzle array 1 Fountain nozzle body 2 Jet nozzle 3 Water storage part 4 Water pipe 4a Water supply hose 5 Reciprocating device 5a Reciprocating motor 5a ₁ rotation output shaft 5b Reciprocating platform 5b ₁ Linear guide 5c Conversion mechanism 5d Eccentric Cam 5d ₁ Eccentric boss 5d ₂ Bearing 5d ₃ End plate 5d ₄ , 5d ₅ Screw 5e Pad 5e ₁ opening 6 Installation fixing base 6a Rail h Hole

Claims (11)

A method for cleaning the inside of a hole / bag hole of an article having a small-diameter hole or a bag hole on the surface, wherein a conveyor device is provided to send the article to be cleaned in a certain direction, and the cleaning water is ejected as a thin thread-like water stream A plurality of fountain nozzle bodies arranged so that the ejection directions are the same direction are arranged so as to face the surface of the article with the hole / bag hole of the article to be fed, and the fountain nozzle body of the fountain nozzle body A plurality of nozzles are provided in each of a vertical direction that is orthogonal to the feed direction and substantially parallel to or nearly parallel to the surface with the hole / bag hole, and a transverse direction that is the feed direction, and the nozzle diameter φ _n of the ejection nozzle is Use equipment equipped with rocking means that makes the fountain nozzle body reciprocate in a vertical direction perpendicular to the article feed direction, making it smaller than 0.66 times the minimum diameter φ ₀ of the opening of the hole to be cleaned and the bag hole ,
A plurality of thread-like water streams are ejected from the ejection nozzle of the fountain nozzle body toward the surface of the article while feeding the article at a speed v by the conveyor device, and the entire fountain nozzle body is perpendicular to the article feeding direction by the swinging means. The nozzle is reciprocated at a high frequency f in the direction, and the fountain nozzle body is swung so that the longitudinal fountain width of the fountain flow from the plurality of ejection nozzles covers the entire area of the maximum longitudinal width of the article surface to be cleaned. By positioning the position or the amount of oscillating stroke of the fountain nozzle body and setting the reciprocating motion by the oscillating means to a high frequency, the water flow from the squirting nozzle surely flows into the inside of the hole / bag hole and A method for cleaning the inside of a small-diameter hole or bag hole, characterized in that it can be cleaned well.   The fountain nozzle body is provided with two sets of jet nozzle groups arranged in a lattice pattern with the same interval between the jet nozzles in the vertical direction, and the vertical position of the jet nozzle of the other group is the vertical position of the jet nozzle of one group 2. The method for cleaning the inside of a small-diameter hole / bag hole according to claim 1, wherein the holes are arranged in a staggered manner so as to be in the middle of each other and at different lateral positions. The frequency of oscillating the fountain nozzle body by the oscillating means is f, the feed speed of the article is v, the smallest aperture on the surface of the article and the actual aperture of the bag hole is φ ₀ , when the nozzle diameter of the nozzle was set to _{φ n, (v / φ n} )>f> (v / φ 0) inequality has a high frequency which satisfies, according to claim 1 or 2 small diameter hole-bag according to any one How to clean the inside of the hole. The frequency f of the fountain nozzle body by the oscillating means is set to v, the feed speed of the article is v, and the actual diameter φ ₀ of the hole with the smallest diameter and the opening of the bag hole is the length of the nozzle diameter φ _n of the ejection nozzle. The value φ = φ ₀ + φ _n added with the minimum aperture diameter φ is defined as a high frequency that satisfies the inequality of (v / φ _n )>f> (v / φ). A method for cleaning the inside of a small-diameter hole or bag hole.   The fountain flow of the jet nozzles arranged in the lateral direction where the fountain width overlaps is from the lateral position at the tip of the hole / bag hole opening with the smallest diameter on the article surface to the lateral position at the end of the opening. The small-diameter hole or the small-diameter hole according to claim 1 or 2, wherein the oscillation frequency or the arrangement of the ejection nozzle is determined so that the total phase angle range of oscillation of the fountain nozzle body covers all phases of 0 ° to 360 °. How to clean the inside of the bag hole. The minimum number M of ejection nozzles that can cover the entire phase of 0 ° to 360 ° by a plurality of lateral ejection nozzles that overlap the fountain width, the oscillation frequency f of the fountain nozzle body, the feed speed v of the article, the minimum The frequency f at which the inequality of (v / φ _n )>f> (v / M / φ ₀ ) holds when the nozzle diameter φ _n of the ejection nozzle is set to the actual diameter φ ₀ of the aperture of the aperture / bag hole The method for cleaning the inside of the small-diameter hole / bag hole according to claim 5. The minimum number M of ejection nozzles that can cover the entire phase of 0 ° to 360 ° by a plurality of lateral ejection nozzles that overlap the fountain width, the oscillation frequency f of the fountain nozzle body, the feed speed v of the article, the minimum the actual diameter phi ₀ to nozzle diameter phi _n of length values φ = φ ₀ + φ _n plus the ejection nozzle of the hole-blind holes opening diameter as no diameter phi minimum opening only, (v / φ _n )>F> (v / M / φ) The method for cleaning the inside of a small-diameter hole / bag hole according to claim 5, wherein the frequency f is satisfied.   The small-diameter hole or bag according to any one of claims 1 to 7, wherein the ejection nozzles of the fountain nozzle body are arranged at equal pitches in the vertical direction, and a length equal to or longer than the interval of the pitch is defined as the swing stroke amount of the fountain nozzle body. How to clean the inside of the hole.   The value of the frequency f of the reciprocating motion of the fountain nozzle body is changed temporally within the time during which the article passes through all of the lateral ejection nozzles that overlap the fountain width. Cleaning the inside of small-diameter holes and bag holes.   Washing a plurality of times using the surface hole / bag hole cleaning method of the article according to claim 1-9, using water / warm water or a solution containing a cleaning liquid as the first cleaning water, A high-level cleaning method for holes and bag holes on the surface of an article, in which warm pure water is used as the second cleaning water, and ultrapure water is used as the third cleaning water for cleaning in the process of complete drying. A cleaning device for cleaning the inside of a hole / bag hole of an article having a small-diameter hole or a bag hole on the surface, the conveyor device for sending the article to be cleaned in a certain direction, and the surface of the article sent by the conveyor device A fountain nozzle body in which a plurality of ejection nozzles that irradiate washing water as a thin thread-like water stream are provided so that the ejection direction is the same direction, and the fountain nozzle body is reciprocated in a vertical direction perpendicular to the article feed direction. And a oscillating means for moving the jet nozzle of the fountain nozzle body. The jet nozzle of the fountain nozzle body is perpendicular to the feed direction of the article and parallel to or substantially parallel to the surface with the holes and the bag holes. a plurality in each direction in the direction, yet smaller than 0.66 times the smallest diameter phi ₀ of the opening of the hole-blind hole to clean the nozzle diameter phi _n of the jet nozzles, further in the longitudinal direction of the rocking means Oscillating stroke is vertical jet A cleaning device for small-diameter holes and bag holes on the surface of the article, which is longer than the length of the nozzle interval.

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