WO2005123284A1

WO2005123284A1 - Static charge and dust removing device

Info

Publication number: WO2005123284A1
Application number: PCT/JP2005/010924
Authority: WO
Inventors: Takahiro Ishijima; Jun Inomata; Shigeru Ohkawa
Original assignee: Koganei Corporation
Priority date: 2004-06-22
Filing date: 2005-06-15
Publication date: 2005-12-29
Also published as: US20090158537A1; CN1972763A; EP1759776A1; JP2006007012A; TW200600200A; EP1759776A4

Abstract

This static charge and dust removing device has a base box (11) provided with an air flow inlet port (16), and a processing head (23) attached to the base box (11) through a support column (21), with a processing space (24) defined between the air flow inlet port (16) and the processing head (23). A front opening (29) and right and left side openings (28) in the device are formed with air curtains for shutting the processing space (24) from outside by air from the spouts of an air spout pipe (33). Ionized air generated by an ion generator (42) is spouted into the processing space (24), so that the ionized air is blown against an article to be processed disposed in the processing space (24) so as to remove dust from the article to be processed. Thereby, the static charge and dust removing operation for the dust adhering to the article to be processed can be efficiently effected in a short time, and contamination of the working environment due to leakage of removed dust can be prevented.

Description

Specification

Static eliminator and dust remover

Technical field

[0001] The present invention is intended to remove dust adhering to an object to be processed by spraying ionized air onto a part or the like of an industrial product as an object to be processed, and to prevent contamination of a working environment. The present invention relates to an electrostatic dust removing device.

Background art

[0002] When manufacturing components of industrial products such as electric products, or assembling components to manufacture industrial products, it is necessary to remove dust attached to the components, such as dust, foreign matter and dust. Since some dust adheres to components due to static electricity, spraying ionized air onto components to neutralize and remove static electricity on the surface of the components and remove the dust ensures that dust is removed. Can be. As described above, for example, Patent Documents 1 and 2 disclose a technique for removing dust adhering to an industrial product part or the like as a workpiece, that is, a workpiece, while neutralizing static electricity on the surface of the workpiece. It has been proposed to be.

Patent Document 1: JP-A-5-15862

Patent Document 2: JP-A-8-131982

Disclosure of the invention

Problems to be solved by the invention

[0003] In order to generate ionized air, electrodes are disposed in a flow path through which air flows, and air is ionized by corona discharge between the electrodes. In order to remove dust adhering to the workpiece, ionized air is blown onto the workpiece by a nozzle. However, when dust is removed by spraying ionized air from a nozzle, the removed dust may adhere to the workpiece again, in which case the workpiece after removing the dust cannot be kept clean. . Also, the removed dust scatters and floats around the working environment, polluting the working environment.

[0004] Therefore, a main air flow that is blown to the object to be processed is generated in a box having an opening / closing door, and the main air flow is mixed with ionized air from a nozzle. A static eliminator has been developed to remove dust adhering to the surface.However, if the ionized air from the nozzle is mixed with the main air, the ion concentration will decrease and the static elimination efficiency will decrease, resulting in a reduction in static elimination. It takes time to complete the dust removal process. On the other hand, when operating the opening / closing door when the workpiece is inserted into the box, the operator needs to frequently operate the opening / closing door when loading and unloading the workpiece. There is a problem that workability is not good.

An object of the present invention is to provide a static eliminator and a dust eliminator capable of efficiently performing a static elimination and dust removal operation of dust adhering to an object to be processed in a short time.

[0006] Another object of the present invention is to provide a static eliminator and dust removing apparatus in which dust removed from an object to be processed does not fly outside and contaminate a working environment.

Means for solving the problem

[0007] The static eliminator and dust remover of the present invention is a static eliminator and dust remover for removing dust adhered to an object by spraying ionized air onto the object, and has an air inlet through which air flows. A base box, a processing head mounted on a support column provided in the base box, facing the air inlet, and forming a processing space between the air inlet and the processing head; An air ejection member provided with an ejection port for ejecting air toward the air inflow port to form an air curtain for interrupting an external force in the processing space; and an air ejection member provided in the processing head and provided in the processing space. And an ion ejection nozzle for blowing ion-rich air onto the object to be processed.

[0008] In the static elimination and dust removal apparatus of the present invention, a front opening is formed between a front end of the processing head and a front end of the base box, and the air curtain is formed along the front opening. The loading and unloading of the object to be processed into and out of the processing space is performed through the front opening.

[0009] The static eliminator and dust removing apparatus of the present invention has a front opening formed between a front end of the processing head and a front end of the base box, and has both sides of the processing head and the base box. A side opening is formed between both sides, and the air curtain is formed along the front opening and each of the side openings to determine whether the front opening and each of the side openings are misaligned. Loading and unloading of the processing object into and from the processing space Is performed.

[0010] In the static elimination and dust removal apparatus of the present invention, a removable cover is attached to each of the side openings, and by removing the cover, the object to be processed is loaded into the processing space through the side opening. And carrying out.

[0011] The static eliminator and dust removing apparatus of the present invention include a sensor for detecting an object to be processed carried into the processing space, and an air in the base box when the sensor detects the introduction of the object to be processed. Control means for controlling the start of flow, the ejection of air from the air ejection member, and the ejection of ionized air from the ion ejection nozzle in this order at predetermined time intervals. And

[0012] In the static elimination and dust removal apparatus of the present invention, the control means may stop the ejection of the ionized air and stop the ejection of the air from the air ejection member when the object to be processed is carried out of the processing space. And stopping the formation of the airflow in the base box in this order every time a predetermined time elapses.

[0013] In the static eliminator and dust remover of the present invention, the control means may further comprise: stopping the ejection of the ionized air, stopping the ejection of the air from the air ejection member, and stopping the base box when a predetermined processing time has elapsed. The process is controlled to stop the air flow formation in each time in this order every time a predetermined time elapses.

The invention's effect

According to the present invention, in a state where the processing space is shielded from external force by an air curtain, ion dust is ejected from the ion ejection nozzle to remove dust while neutralizing static electricity charged on the workpiece. The processing space does not need to be covered with a cover or the like, and the processing object can be quickly brought into and out of the processing space. Can be quickly performed.

[0015] The force of the air ejection member The compressed air that is ejected to form an air curtain is sucked into the base box, forms an air flow in the base box, and ejects ionized nozzles. Since the dani air is also sucked by the air flow in the box and flows into the base box, the ionization air is prevented from being diluted in the processing space without being mixed with the air curtain air. Can be reliably ionized on the workpiece Dust adhered to the processing object by blowing air can be removed in a short time.

[0016] By making the cover attached to the side opening detachable, it is possible to select various routes for loading and unloading the processing object into and from the processing space according to the installation location of the apparatus.

[0017] By forming the air flow in the box at the start and end of the process and setting the order of operation of the air curtain and the ion ejection nozzle to a fixed order, it is possible to blow ionized air onto the object to be processed and After the processing is completed, the processing space can be set to a state where no dust exists in the processing space, so that the processing quality of the processing target can be improved.

[0018] External leakage of the dust removed in the processing space can be prevented, so that contamination of the work environment by dust can be prevented.

[0019] The processing termination control pattern can be set to a sensor stop type in which the unloading of the workpiece is detected by the sensor and a timer stop type in which the device is turned off by the timer. Depending on the type of the processing object, it is possible to select a shift control pattern.

Brief Description of Drawings

FIG. 1 is a front view showing a static eliminator and dust remover of the present invention.

FIG. 2 is a side view of FIG. 1.

FIG. 3 is a partially cutaway plan view of FIG. 1.

FIG. 4 is a partially cutaway side view showing the internal structure of the dust eliminator of the present invention.

FIG. 5 is a perspective view showing a main part of FIG. 1.

FIG. 6 is an enlarged sectional view taken along line AA in FIG. 5.

FIG. 7 is a schematic diagram showing a control circuit for controlling the operation of the static elimination device.

FIG. 8 is a flowchart showing a control procedure of a type in which a device is turned on and off by a sensor.

FIG. 9 is a flowchart showing a control procedure of a type in which a device is turned off by a timer.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. This static eliminator The base has a base box 11 formed by combining plate materials. Inside the base box 11, as shown in FIG. 4, a motor 12 and a fan 13 rotated by the motor 12 are provided. A blower 15 having a case 14 for accommodating air therein, that is, a blower 15 is incorporated therein, and a space for forming a flow of air, that is, an air flow path is formed inside. An air inlet 16 through which air flows vertically is formed at the front end side of the base box 11, and an expanded metal 17 having a large number of ventilation holes is attached to the air inlet 16. An object to be processed is prevented from entering the table box 11 from the air inlet 16. When the blower 15 is driven, the air flows into the base box 11 due to the large number of vent holes of the expanded metal 17 provided at the air inlet 16 as shown by arrows in FIG. A flow (air flow) is created. The generated airflow is discharged to the outside from an exhaust duct 18 attached to the back of the base box 11.

[0022] At the rear end of the base box 11, a support column 21 formed by combining plate materials is provided, and a storage chamber 22 is formed inside the support column 21. As shown in FIG. 4, the support column 21 is provided with a transparent cover, which projects forward and is a transparent plate material, as a processing head 23, and is provided between the processing head 23 and the air inlet 16 as shown in FIG. Has a processing space 24 formed.

The side plates 25, 26 forming the support column 21 have protrusions 25a, 26a protruding forward along the processing head 23, and the transparent cover forming the processing head 23 includes both the protrusions 25a, Fixed to 26a. Notches are provided in the protruding portions 25a and 26a, and side opening portions 27 and 28 are formed between both side portions of the processing head 23 and both side portions of the base box 11, and the front end of the processing head 23 is formed. A front opening 29 is formed between the base and the tip of the base box 11, and the workpiece is loaded into the processing space 24 from the front opening 29 and the processed workpiece is unloaded. can do.

As shown in FIG. 2 and FIG. 3, transparent covers 31, 32 made of a transparent plate material are attached to each side opening 27, 28 with a screw member 30, and the transparent covers 31, 32 are attached. The inside of the processing space 24 can be visually observed from outside through the processing state. When at least one of the transparent covers 31 and 32 is removed, the workpiece can be loaded and unloaded into the processing space 24 via the side openings 27 and 28. Therefore, processing empty Either the front opening 29 or one of the side openings can be used for loading and unloading of the object to be processed into the space 24. Either one may be carried out and the other may be carried out. When the front opening 29 is not used for carrying in and carrying out the object to be processed, the front opening 29 may be covered with a transparent cover.

[0025] Side pipes 33a, 33b are fixed to the front wall of the support column 21 along the vicinity of the protruding parts 25a, 26a, respectively, and the tips of the pipes 33a, 33b are connected to the front pipe 33c. Are connected via a joint 34, and an air ejection pipe 33 assembled in a plane U-shape by these pipes 33a to 33c is formed as an air ejection member. As shown in FIG. 6, the air ejection pipe 33 is formed with ejection ports 35 for ejecting air toward the outer peripheral portion of the air inlet 16 of the base box 11, and the air is ejected from each of the ejection ports 35. An air curtain is formed between the side opening portions 27 and 28 and the front opening portion 29 by air, as indicated by broken arrows, and the processing space 24 is shut off from the outside by the air curtain. As the air ejection pipe 33 as the air ejection member, a pipe having a circular cross section is used in the illustrated case, but a square pipe may be used. In the case shown in the figure, the ejection port 35 may be formed by an ejection port on a force slit formed by a plurality of holes.

[0026] An ion ejection nozzle 36 is attached to the center of the processing head 23, and an ion discharge nozzle 36 is provided in the processing space 24 from the ejection port 36a of the ion ejection nozzle 36 into the processing space 24 as indicated by an arrow. Iridani air is blown onto the object placed in the processing space 24 while being shielded from the outside by an air curtain. The ionized air blown to the workpiece is sucked into the air inlet 16 by the blower 15 together with the air curtain air flowing into the air inlet 16 by the blower 15 and flows into the air inlet 16, and is discharged from the exhaust duct 18. It is discharged outside.

[0027] In order to supply compressed air to the air ejection pipe 33, an air supply port 37 is mounted on the rear wall of the support column 21 as shown in Fig. 3, and the air supply port 37 is provided with an on-off valve 38 and an on-off valve 38. The air supply pipe 41 is connected to the air supply nozzle 41 via a throttle valve 39, and the air supply pipe 41 is branched into two and connected to the respective pipes 33a and 33b. Therefore, compressed air from the air pressure source connected to the air supply port 37 passes through the throttle valve 39 when the on-off valve 38 is opened. It is supplied to the ejection pipe 33 and ejected from the ejection port 35 to form an air curtain.

[0028] The ion ejection nozzle 36 is connected to an ion generator 42 attached to the support column 21, and an air supply port 37 is provided on the rear wall of the support column 21 to supply air to the ion generator 42. An air supply port (not shown) is attached to the lower side of the air supply port. This air supply port is connected to a pressure regulating valve, that is, a regulator 44 and an on-off valve 43 by an air supply pipe 45 as shown in FIG. The on-off valve 43 is connected to the ion generator 42 via an air supply pipe 45 as shown in FIG. An ion transport tube 46 is connected between the ion generator 42 and the ion ejection nozzle 36, and ion-exhaust air is transported to the ion ejection nozzle 36 by the ion transport tube 46. Therefore, when the on-off valve 43 is opened, the compressed air from the air pressure supply source is supplied to the ion generator 42 via the on-off valve 43 after being regulated by the regulator 44. The ion generator 42 has electrodes (not shown) arranged in pairs in the compressed air flow path, and by supplying power to the electrodes, the air is ionized by corona discharge between the electrodes. The ionized air is supplied from the ion ejection nozzle 36 into the processing space 24. The compressed air supplied from one air supply port 37 may be branched into air for the air curtain and air for the ion generator 42 and supplied to each of them.

[0029] As described above, in a state where the air curtain is formed by compressed air so as to surround the processing space 24 and shield the processing space 24 from external force, the ionized air from the ion ejection nozzle 36 is sprayed on the object to be processed. As a result, dilution of the ionized air which is not mixed with the air for the air curtain in the processing space 24 is prevented. Therefore, ionized air is reliably blown on the object to be processed, and the static electricity charged on the object to be processed is neutralized by the ionized air, so that dust attached to the object to be processed due to the static electricity can be removed in a short time. The attached dust is removed by the flow of the ionized air, and is sucked into the base box 11 from the air inlet 16.

In order to detect when an object to be processed is loaded into the processing space 24, an upper sensor 47 is attached to the processing head 23 as shown in FIG. A side sensor 48 is provided, one sensor 47 having a light emitting element and the other sensor 48 having a light receiving element. Therefore, for example, the worker holds the work When the workpiece is loaded in the interval 24, the transport is automatically detected by the sensors 47 and 48.

FIG. 7 is a schematic diagram showing a control circuit for controlling the operation of the static eliminator and dust remover. The control unit 50 arranged in the accommodation room 22 of the support column 21 sends a motor 12 of the blower 15 Control signals are sent to the on-off valves 38 and 43 and the ion generator 42, and a signal from a sensor 48 is supplied to the control unit 50. Further, the control unit 50 outputs a monitor signal indicating the operating state of the static eliminator and dust remover.

When the ionized air is blown onto the object to be processed by such a static elimination and dust removal apparatus to remove dust attached to the object to be processed, the object is carried into the processing space 24 by an operator. Is done. When the workpiece is carried in, the light emitted from the upper sensor 47 toward the lower sensor 48 is blocked, and the sensor 48 outputs a carry-in detection signal to the control unit 50. As a result, the air curtain is formed in the front opening 29, and the air curtain is formed from the ion ejection nozzle 36 in a state where the air curtain is formed along the transparent covers 31, 32 in the side openings 27, 28. The blown air is blown into the processing space 24, and the air in the processing space 24 is sucked into the base box 11 by the blower 15. By connecting a communication duct (not shown) to the exhaust duct 18 and guiding the collected air to a dust filter or the like, dust can be collected in the filter. If the air flowing from the air inlet 16 is formed in the air flow path of the base box 11, it is necessary to connect the base box 11 to the exhaust duct 18 without installing the blower 15. The air inside 11 may be sucked out and exhausted.

[0033] The processing end control method of the apparatus includes a method in which the processing is stopped when the sensor 48 detects that the object to be processed has been unloaded by the operator in the processing space 24, and a method in which the ion air is ejected for a predetermined time. After that, there is a method of stopping the processing, and the control method to be used is set by operating the switch provided on the input operation unit 51 connected to the control unit 50 according to the type of the workpiece. Is done. The input operation unit 51 is provided on the back side of the support column 21 or the like.

FIG. 8 is a flowchart showing a control procedure of a type in which a device is turned on and off by a sensor. FIG. 9 is a flowchart showing a control procedure of a type in which the device is turned off by a timer.

In the control method shown in FIG. 8, when a work, that is, an object to be processed is carried into the processing space 24 and detected by the sensor 48 (S1), first, the motor 12 of the blower 15 is operated to activate the base. An air flow is formed in the box, and after a predetermined time elapses, the on-off valve 38 opens the flow path, and compressed air is supplied to the air ejection pipe 33 to form an air curtain. In this manner, with the processing space 24 in a state where external force is also cut off, the on-off valve 43 opens the flow path to supply air to the ion generator 42 and supply power to the electrodes in the ion generator 42. Then, the ion generator 42 operates (S2 to S4). The processes of steps S2 to S4 are successively and sequentially executed after a predetermined time of 1 second or less has elapsed, and the ion processing air is reliably processed under the condition that the processing space 24 is externally shut off by the air curtain. Sprayed on. When sprayed for a predetermined time, dust adhered to the object by static electricity is neutralized by ionized air, removed by the flow of air in the processing space 24, and sucked into the base box 11. When the unloading of the object is detected by the sensor 48 (step S5), the operation of the ion generator 42, the operation of the air curtain, and the operation of the air blower 15 are stopped at predetermined time intervals. Are continuously executed.

As described above, in the static eliminator and dust remover, when it is detected that an object to be treated has been carried into the processing space, the air curtain is activated when a predetermined time has elapsed after the operation of the blower 15 at the start of processing of the device. Then, after a predetermined time has elapsed, the ionizing air is blown out, so that the external force is reliably shut off by the air curtain and the ionizing air is discharged in a state where no dust exists in the processing space 24. Since the air is blown out to the workpiece, it is possible to prevent the dust from leaking out of the apparatus and to reliably remove the dust from the workpiece. On the other hand, at the end of the process, the air curtain is stopped when a predetermined time has elapsed after the ion generator 42 has stopped and the blower 15 Since the operation of is stopped to stop the formation of the airflow, it is possible to reliably prevent the removed dust from leaking to the outside.

[0037] On the other hand, in the control method shown in FIG. The process termination control when stopping the operation of the power device is the same as that in FIG. 8, and the operation of the device is stopped when the time for blowing the ionized air by the timer elapses a predetermined time, unlike in FIG. . Since the ionization and dust removal processing is automatically completed when the ionized air is blown onto the object for a predetermined time, the operator stops the apparatus and carries out the object to the outside. As described above, even in the timer stop type processing end control, as in the sensor stop type processing end control method shown in FIG. it can.

[0038] The static eliminator and dust remover can cause damage to elements due to static electricity, such as various electric and electronic parts for industrial products, camera parts such as optical lenses, resin molded parts, and the like. It is possible to perform a static elimination and dust removal process using a component having a problem of dust adhesion as an object to be treated.

[0039] The present invention is not limited to the above-described embodiment, and can be variously modified without departing from the gist thereof. For example, in the illustrated static elimination and dust removal apparatus, the processing head 23 may be provided with a plurality of ion ejection nozzles 36 provided with one ion ejection nozzle 36. Also, the processing head 23 may be formed of a force plate formed of a transparent plate material. The processing head 23 may be formed of an opaque plate material instead of the transparent covers 31 and 32. You may do it.

Claims

The scope of the claims

[1] A static elimination and dust removal apparatus for removing dust adhered to an object by spraying ionized air onto the object,

A base box having an air inlet through which air flows in and having an air flow path through which the flow of the air flowing from the air inlet enters;

A processing head attached to a support column provided in the base box so as to face the air inlet, and forming a processing space with the air inlet;

An air ejection member provided in the processing head and having an ejection port for ejecting air toward the air inflow port to form an air curtain for shutting off the processing space with an external force;

An ion ejection nozzle provided on the processing head, for spraying ionized air onto an object to be processed in the processing space.

2. The static eliminator and dust remover according to claim 1, wherein a front opening is formed between a front end of the processing head and a front end of the base bottom, and the air force is formed along the front opening. A static eliminator and dust remover, wherein a ten is formed, and a workpiece is carried in and out of the processing space through the front opening.

3. The static eliminator and dust remover according to claim 1, wherein a front opening is formed between a distal end of the processing head and a distal end of the base bot, and both sides of the processing head and the base. A side opening is formed between both sides of the base box, and the air curtain is formed along the front opening and the respective side openings, and the front opening and the respective side openings are formed. A static eliminator and a dust remover, wherein an object to be processed is carried in and out of the processing space via a gap.

4. The static eliminator and dust removing apparatus according to claim 3, wherein a detachable cover is attached to each of the side openings, and the cover is removed. Static elimination device for carrying in and out

[5] In the static eliminator and dust remover according to claim 1, a sensor for detecting an object to be processed carried into the processing space, and the base bobbin when the sensor detects the introduction of the object to be processed. Control means for controlling the start of air flow in the task, the ejection of air from the air ejection member, and the ejection of ionized air with the ion ejection nozzle force in this order at predetermined time intervals. A static eliminator and dust remover, characterized in that:

6. The static eliminator and dust remover according to claim 5, wherein the control means stops the ejection of the ionized air and ejects the air from the air ejection member when the object to be processed is carried out of the processing space. A static eliminator and a dust eliminator, wherein a stop and a stop of air flow formation in the base box are controlled in this order at every predetermined time.

7. The static eliminator and dust remover according to claim 5, wherein the control means stops the ejection of the ionized air and the ejection of the air from the air ejection member when a predetermined processing time has elapsed. A static eliminator and a dust eliminator, wherein the process of stopping the formation of the air flow in the box is controlled in this order every time a predetermined time has elapsed.