JP2020078764A - Dust collector - Google Patents

Abstract

To provide a dust collector which can efficiently remove dust adhering to an object and used for objects having various sizes and shapes.SOLUTION: A dust removal device removes dust of an object disposed in a storage space and includes: a dust removal unit 21 which is detachably attached to a case 12 forming the storage space 11 and including a detachable surface forming at least a part of a wall body of the case 12; and a supply port 33 provided at the dust removal unit. Dust removal nozzles 31, 32, which jet compressed air supplied to the supply port to the object, are provided at the dust removal unit 21. The dust removal unit 21 may be attached to any of multiple cases.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a dust removing device that removes dust adhering to parts of industrial products as objects to be processed.

  When manufacturing industrial products such as electronic devices, it is necessary to remove dust, foreign matter, dust such as dust attached to parts for assembling electronic devices, that is, dust. It is also necessary to remove dust such as dust from industrial parts such as automobile parts and resin molded parts. There is known a dust remover in which parts of such an industrial product are treated as an object to be treated, that is, an object, and compressed air or ionized air is blown to the object to remove dust adhering thereto.

  As such a dust removing device, as described in Patent Documents 1 and 2, there is a type in which a nozzle is attached to a housing that houses an object, and ionized air is blown onto the object inside the housing. Further, Patent Documents 3 and 4 describe dust removers in which compressed air or ionized air is blown onto an object placed on a manufacturing line for industrial products.

JP, 2006-70112, A JP, 2010-104969, A JP, 10-290964, A JP, 5-15862, A

  As described in Patent Documents 1 and 2, in a dust remover of a type in which a nozzle is attached to a housing, it is necessary to place an object in a storage chamber provided in the housing and having a limited size. .. For this reason, the size of the object is limited, and the object of various shapes and sizes cannot be supported. Further, in the dust removers described in Patent Documents 1 and 2, the direction in which dust is scattered differs depending on the distance and angle at which the ionized air strikes the target object, and the dust that is not collected and drifts in the air again becomes the target object. May adhere to.

  On the other hand, as described in Patent Documents 3 and 4, in the dust remover installed in the manufacturing line, the size and the distance from the nozzle to the target are different depending on the target object, so various shapes and sizes Can not deal with the target object.

  As described in Patent Documents 1 and 2, an ion generator also called an ionizer supplies ionized air to an object. In a static eliminator and dust eliminator that performs static eliminator and dust eliminator, if an attempt is made to increase the dust removal performance by increasing the amount of air supplied, the ion balance generated by the ionizer is disturbed and the static elimination performance is degraded. Therefore, both the dust removing performance and the charge removing performance cannot be satisfied, and the dust removing performance cannot be improved.

  An object of the present invention is to provide a dust remover capable of efficiently removing dust adhering to an object of various sizes and shapes.

  Another object of the present invention is to provide a dust removing device that can prevent dust from reattaching to an object.

  The dust remover of the present invention is a dust remover for removing dust of an object arranged in a storage space, which is detachable from a case forming the storage space and forms at least a part of a wall body of the case. A dust removing unit having a first attaching/detaching surface, a supply port provided on the dust removing unit and connected to a supply source of compressed air, and a supply port provided on the first attaching/detaching surface of the dust removing unit. A dust removing nozzle for ejecting compressed air supplied to the object toward the object, and the dust removing unit can be attached to any of the cases in which a plurality of openings are formed in the wall body. ..

  The dust removal unit provided with a dust removal nozzle that injects compressed air to the target object can be installed in various cases, so dust of the target object in the accommodation space of any size can be installed depending on the size and type of the target object. That is, dust can be removed. Further, the dust removing unit can be attached to any position of the case according to the object. As a result, the dust attached to the object can be efficiently removed.

  If the dust removing unit is provided with the charge eliminating nozzle, the static electricity of the target can be eliminated, and the dust in the accommodation space can be prevented from reattaching to the target.

(A) is a perspective view showing a dust remover according to an embodiment mounted on a case, and (B) is a perspective view showing a state where one side wall of the case is removed. 1A is a front view of FIG. 1B, and FIG. 1B is a right side view of FIG. It is a rear view of FIG. It is the perspective view which looked at the dust removal unit shown in Drawing 1 and Drawing 2 from the upper part. It is the perspective view which looked at the dust removal unit of FIG. 4 from the bottom. It is a pneumatic circuit diagram of a dust remover. It is a perspective view which shows the front side of the dust collection unit shown by FIG. 1 and FIG. It is a perspective view which shows the back side of FIG. It is sectional drawing of a dust collection unit. It is a control circuit diagram of a dust remover. It is a front view which shows the operation panel provided in the dust removal unit.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The dust remover 10 shown in FIGS. 1 to 3 is used to remove dust on the object W arranged in the accommodation space 11. The accommodation space 11 is formed in the case 12. The case 12 includes six wall bodies including a bottom wall 13, a front wall 14, a rear wall 15, left and right side walls 16 and 17, and a top wall 18. The opening 19 is formed in the front wall 14, and the object W is placed in the accommodation space 11 through the opening 19 or taken out of the accommodation space 11 to the outside.

  The dust removing unit 21 is detachably attached to the top wall 18 of the case 12. As shown in FIGS. 4 and 5, the dust removing unit 21 has a unit case 22, and the unit case 22 includes a bottom wall 23, a front wall 24, a rear wall 25, left and right side walls 26 and 27, and a top wall. It has 6 walls of 28. As shown in FIG. 2B, the top wall 18 of the case 12 has an opening 29 smaller than the bottom wall 23 of the unit case 22. When the dust removing unit 21 is mounted on the top wall 18, the opening 29 is covered by the bottom wall 23 of the unit case 22. The bottom wall 23 is a first attachment/detachment surface for the case 12, and the first attachment/detachment surface forms at least a part of the ceiling wall 18 which is a wall body of the case 12. The first attachment/detachment surface is formed by a first contact portion 23 a that contacts the top wall 18 and a first exposed portion 23 b that is exposed from the opening 29 to the accommodation space 11. The contact portion 23a is formed so as to surround the exposed portion 23b. The contact portion 23a has a planar shape and is in close contact with the ceiling wall 18. Therefore, there is no gap between the unit case 22 and the opening 29, and dust is prevented from entering the accommodation space 11 through the opening 29. Two dust removing nozzles 31, 32 are attached to the exposed portion 23b of the first attaching/detaching surface, and the respective dust removing nozzles 31, 32 project from the first attaching/detaching surface. The supply port 33 is attached to the side wall 27 of the unit case 22.

  A plurality of mounting brackets (not shown) are attached to the dust removing unit 21, and the dust removing unit 21 is detachably attached to the case 12 by screwing the respective mounting brackets to the case 12 with screw members.

  FIG. 6 is a pneumatic circuit diagram of the dust remover, in which a compressed air supply source 34 is connected to the supply port 33 via a hose or piping. A pipe 35 is connected between the supply port 33 and the dust removing nozzles 31, 32, and the pipe 35 is provided with a flow rate adjusting valve, that is, a throttle valve 36. The flow rate adjusting nozzle 36a of the throttle valve 36 is projected from the side wall 27 to the outside as shown in FIGS. An electromagnetic valve 37 for opening and closing the passage of the pipe 35 is provided in the unit case 22, and the passage of the pipe 35 is opened and closed by a drive signal externally supplied to the solenoid of the electromagnetic valve 37. The pipe 35 is provided with a pulse air generator 38. The pulse air generator 38 is repeatedly turned on and off under the condition that the solenoid valve 37 is turned on. When the pulse air generator 38 is on, the dust removing nozzles 31 and 32 inject compressed air at a predetermined frequency. On the other hand, when the pulse air generator 38 is off, the injection is stopped.

  By providing the pulse air generator 38, compressed air is intermittently discharged from the dust removing nozzles 31 and 32 at a predetermined frequency. Even when the pulse air generator 38 is not provided, the compressed air can be intermittently discharged by repeatedly turning the solenoid valve 37 on and off. However, in order to adjust the frequency, it is preferable to provide the pulse air generator 38. Two dust removing nozzles 31, 32 are provided on the bottom wall 23 as the first attaching/detaching surface, but the number of the dust removing nozzles provided on the attaching/detaching surface can be set to an arbitrary number. As shown in FIG. 2B, when compressed air is ejected from the dust removing nozzles 31 and 32 toward the object W arranged on the bottom wall 13 of the case 12, the dust of the object W is removed or removed. To be done.

  The dust removing unit 21 is attachable to and detachable from the case 12, and not only the case 12 shown in FIGS. 1 to 3 but also various sizes of cases depending on the size, type and shape of the object W can be selected. is there. The dust removing unit 21 can be selectively attached to a case in which a plurality of openings are formed in the wall body. In addition, by providing the opening 29 corresponding to the exposed portion 23b at an arbitrary location on the wall body, the installation location of the dust removal unit 21 can be easily changed. As described above, since the dust removing unit 21 can be attached to the case having a size corresponding to the condition of the target object, the dust attached to the target object can be efficiently removed. For example, a plurality of openings 29 may be formed in the case and a plurality of dust removing units 21 may be attached. As another example, two openings 19 of the case are provided, the object W is arranged in the accommodation space 11 through one opening 19, and the object W is outside the accommodation space 11 through the other opening 19. You may take it out.

  As shown in FIG. 5, the static elimination nozzle 41 is attached to the dust removing unit 21, and the static elimination nozzle 41 projects from the first attachment/detachment surface. As shown in FIG. 6, a pipe 42 is connected between the static elimination nozzle 41 and the supply port 33, and the pipe 42 is branched from the upstream side of the pipe 35. The pipe 42 is provided with a pressure regulating valve, that is, a regulator 43. The pressure adjusting handle 43 a of the regulator 43 projects from the side wall 27 to the outside. An electromagnetic valve 44 for opening and closing the flow path of the pipe 42 is provided in the unit case 22. A drive signal externally supplied to the solenoid of the solenoid valve 44 opens and closes the flow path of the pipe 42. An ion generator 45 is provided in the pipe 42. The ion generator 45 ionizes the compressed air supplied to the supply port 33 from the outside, and the static elimination nozzle 41 ejects the ionized air generated by the ion generator 45.

  When a pulse air generator is provided between the electromagnetic valve 44 and the ion generator 45, intermittent ionized air is ejected from the static elimination nozzle 41. At this time, the ionized air can be ejected from the charge eliminating nozzle 41 at a frequency different from that of the compressed air ejected from the dust removing nozzles 31 and 32. By providing the pulse air generator 38 on the upstream side of the branch portion of the pipe 42, the compressed air ejected from the dust removing nozzles 31 and 32 and the ionized air ejected from the charge eliminating nozzle 41 can have the same frequency. it can. The throttle valve 36 may be used instead of the regulator 43, and the regulator 43 may be used instead of the throttle valve 36.

  Since the pipe is branched in the unit case 22, it is not necessary to separately provide a supply port connected to the dust removal nozzles 31 and 32 and a supply port connected to the static elimination nozzle 41. That is, when the compressed air supply source 34 is connected to the supply port 33, the compressed air from the dust removing nozzles 31 and 32 and the ionized air from the charge eliminating nozzle 41 are ejected.

  As shown in FIG. 2B, when the compressed air is ejected from the dust removing nozzles 31 and 32 toward the object W arranged on the bottom wall 13 of the case 12, the dust on the object W is generated by the wind pressure. Is removed, that is, removed. As a result, the dust attached to the surface of the object W separates from the object W. Then, the static electricity of the target object W and dust around the target object W is removed by the ionized air ejected from the charge removing nozzle 41 to the target object W. The dust removing device 10 has a form in which only the dust removing nozzles 31 and 32 are provided and a form in which the dust removing nozzles 31 and 32 and the charge eliminating nozzle 41 are provided as shown in the figure. When the static elimination nozzle 41 is provided, the static electricity of the dust separated from the surface of the object W is eliminated by the ionized air, so that the dust is reliably prevented from reattaching to the object W. The compressed air from the dust removal nozzles 31 and 32 and the ionized air from the static elimination nozzle 41 may start ejecting at the same time, or the ionized air may be ejected first. In addition, the timing of ending the ejection of the compressed air and the ionized air may be ended at the same time, or only the ionized air may be ejected last.

  As shown in FIG. 5, a lighting unit 48 such as an LED is provided in the dust removing unit 21, and the lighting unit 48 lights up from the attachment/detachment surface toward the accommodation space. For example, when the accommodation space is dark, the illumination unit 48 is used and the object W is illuminated. The visibility of the target object W is improved by illuminating the target object W with the illumination unit 48.

  The dust collecting unit 51 is detachably attached to the rear wall 15 of the case 12. The dust collection unit 51 has a unit case 52 as shown in FIGS. 7 to 9, and the unit case 52 includes a bottom wall 53, a front wall 54, a rear wall 55, left and right side walls 56 and 57, and a ceiling. It is provided with six walls that are walls 58, and a dust collecting space 59 is formed inside. As shown in FIG. 1B, the rear wall 15 of the case 12 has an opening 46 smaller than the front wall 54 of the unit case 52. When the dust collection unit 51 is mounted on the rear wall 15, the opening 46 is covered by the front wall 54 of the unit case 52. The front wall 54 is a second attachment/detachment surface for the case 12, and the second attachment/detachment surface forms at least a part of the rear wall 15 which is a wall body of the case 12. The second attachment/detachment surface is formed by a second contact portion 54a that comes into contact with the rear wall 15 and a second exposed portion 53b that is exposed from the opening 46 to the accommodation space 11. The contact portion 54a is formed so as to surround the exposed portion 54b. The contact portion 54a has a planar shape and is in close contact with the rear wall 15. Therefore, there is no gap between the unit case 52 and the opening 46, and dust is prevented from entering the accommodation space 11 through the opening 46.

  The mounting bracket 50 is attached to the side walls 56 and 57 of the dust collecting unit 51. The dust collecting unit 51 is detachably attached to the case 12 by screwing each of the mounting brackets 50 to the case 12 with a screw member.

  As shown in FIG. 7, two suction port frame bodies 61 are attached to through holes formed in the front wall 54, and the suction port frame body 61 has an opening 61 a for sucking air into the unit case 52. have. The inlet-side filter 62 is sandwiched between the inlet frame 61 and the front wall 54. The filter 62 is provided so that foreign matter such as screws does not enter the dust collection unit 51, and prevents the fan motors 65 and 66 from being damaged. As shown in FIG. 9, the support base 63 is attached to the inner surface of the front wall 54 so as to correspond to each suction port frame 61. Two dust collecting fans 64 are arranged in the unit case 52 so as to correspond to the two suction port frames 61, and fan motors 65 and 66 for driving the respective dust collecting fans 64 are attached to the respective support bases 63. There is. When the two fan motors 65 and 66 are driven, the air in the accommodation space 11 is sucked into the dust collection unit 51 by the dust collection fan 64 through the filter 62. Therefore, the dust scattered in the accommodation space 11, that is, the dust, is sucked into the dust collecting space 59 inside the dust collecting unit 51 by the dust collecting fan 64.

  As shown in FIG. 8, a discharge port frame body 67 is attached to a through hole formed in the rear wall 55, and the discharge port frame body 67 has an opening 67 a for discharging air from the inside of the unit case 52 to the outside. have. The filter 68 on the outlet side is sandwiched between the discharge port frame 67 and the rear wall 55. The air that has flowed into the dust collection unit 51 from the accommodation space 11 inside the case 12 passes through the filter 68 and is discharged from the inside of the discharge port frame 67 to the outside. The ventilation holes of the filter 68 are smaller than the filter 62, and the dust contained in the air flowing into the dust collecting unit 51 is captured by the filter 68. The dust removed from the object space W by the dust removing unit 21 is discharged from the accommodation space 11 by the dust collecting unit 51, so that the reattachment of the dust to the object W is prevented.

  FIG. 10 is a control circuit diagram of the dust removing device 10. The dust removal unit 21 has a dust removal control unit 71, the dust collection unit 51 has a dust collection control unit 72, and the dust removal control unit 71 and the dust collection control unit 72 are connected by a signal cable 73. The dust removal control unit 71 and the dust collection control unit 72 include a microprocessor that calculates a control signal, and a memory that stores a control program, a calculation formula, and the like.

  As shown in FIG. 5, the sensor box 74 is provided on the bottom wall 23 of the dust removing unit 21, that is, on the attachment/detachment surface. The sensor box 74 is provided with a potential sensor 75 as dust removal monitoring means, and the output signal of the potential sensor 75 is sent to the dust removal control unit 71 as dust removal control means. As shown in FIG. 10, the dust removal control unit 71 sends drive signals to the solenoid valves 37 and 44, the pulse air generator 38, and the ion generator 45 shown in FIG.

  When the target object W is charged, dust is attracted to and adheres to the target object, and the amount of adhesion is proportional to the amount of charge. When the object W is charged, an electric field having a strength proportional to the amount of charge is generated around the object W, and therefore the potential sensor 75 is used to measure the strength of this electric field.

  A potential sensor 75 as dust removal monitoring means measures the potential of the object W and outputs an output signal corresponding to the potential to the dust removal control unit 71. Based on the output signal from the potential sensor 75, the dust removal control unit 71 sets the solenoid valve 37 on and off to control the injection amount of air ejected from the dust removal nozzle 31. When the charge amount of the object is large, the injection amount is set to be larger than when the charge amount is small. In this way, the injection amount of air according to the charge amount of the object is set in advance in the dust removal control unit 71, so that the injection amount of air is set to the optimum value. As a method of controlling the injection amount according to the charge amount, the injection time may be changed, or the flow rate of the compressed air ejected from the dust removing nozzle 31 may be changed without changing the injection time. . It is also possible to provide the output signal from the potential sensor 75 with a first determination criterion in advance and output the signal to the outside of the dust removal control unit 71 based on this determination criterion. This output signal is used as the first determination signal. For example, when the charge amount of the object W becomes equal to or less than the determination reference, the determination signal is output to the outside. From this determination signal, it can be confirmed that the charge amount of the target object has become equal to or less than the determination reference, that is, the target object W has been discharged. The judgment standard can be variably set.

  The dust collection unit 51 is provided with a dust sensor 76 as a dust removal monitoring unit, and an output signal of the dust sensor 76 is sent to the dust collection control unit 72. The dust sensor 76 includes a light emitting unit that irradiates the dust collecting space 59 of the dust collecting unit 51 with light, and a light receiving unit that receives reflected light from dust existing in the dust collecting space 59. The dust sensor 76 measures the presence or absence and the concentration of dust in the dust collecting space 59 based on the light reception output of the light receiving unit. The dust concentration in the dust collection space 59 corresponds to the dust concentration in the accommodation space 11. The dust sensor 76 outputs an output signal corresponding to the presence or absence and concentration of dust to the dust removal control unit 71 via the dust collection control unit 72 and the communication cable 73. The dust removal control unit 71 controls the injection amount of the air ejected from the dust removal nozzle 31 according to the output signal of the dust sensor 76, that is, according to the concentration of dust in the dust collection space 59. In this case, when the amount of dust is large, the injection amount is set to be larger than when it is small. In this way, the injection amount of air according to the amount of dust in the dust collection space 59 is set in advance in the dust removal control unit 71, so that the injection amount of air is set to the optimum value. As a method of controlling the injection amount according to the amount of dust, as described above, the injection time may be changed or may be changed without changing the injection time, like the method of controlling the injection amount according to the charge amount. Alternatively, the flow rate of the compressed air ejected from the dust removing nozzle 31 may be changed. Further, it is possible to set the second determination standard in advance to the output signal from the dust sensor 76 and output the signal to the outside of the dust removal control unit 71 based on this determination standard. This output signal is used as the second determination signal. For example, when the dust concentration falls below the criterion, the determination signal is output to the outside. From this determination signal, it can be confirmed that the dust concentration has become equal to or lower than the determination reference, that is, the dust has been removed. The judgment standard can be variably set.

  As the dust removal monitoring means, as described above, either the potential sensor 75 that measures the surface potential of the target object W or the dust sensor 76 that measures the amount of dust in the dust collection space 59 may be used. Moreover, both may be used. When both are used, the value with the larger injection amount from the dust removal nozzles 31 and 32 calculated according to the detection result may be used. Further, the dust sensor 76 may be provided in the dust removing unit 21 in addition to the dust collecting unit 51, and the signal of the dust sensor 76 provided in the dust removing unit 21 is sent to the dust removing control unit 71.

  Based on the output signal from the potential sensor 75 as the dust removal monitoring means, the dust removal control unit 71 controls the injection amount of the ionized air ejected from the static elimination nozzle 41 to the object W. When the charge amount of the object is large, the injection time of the ionized air is set longer than when the charge amount is small. In this way, the injection amount of ionized air according to the charge amount of the target object is set in advance in the dust removal control unit 71, so that the injection amount of ionized air is set to the optimum value.

  Further, the dust removal control unit 71 can control the injection amount of ionized air according to the concentration of dust in the dust collection space 59 measured by the dust sensor 76 as the dust removal monitoring unit. In this case, when the amount of dust is large, the ejection amount is set to be larger than when it is small. In this way, by setting the injection amount of ionized air according to the amount of dust in the dust collection space 59, the injection amount of ionized air is set to the optimum value.

  As a control method of the injection amount of ionized air based on the output signal of the dust removal monitoring means, as described above, the injection time is changed by the same control method as the control method of the injection amount of compressed air from the dust removal nozzles 31 and 32. Alternatively, the flow rate of the ionized air ejected from the static elimination nozzle 41 may be changed without changing the injection time. Further, as a method of controlling the injection amount of the ionized air, the ion balance of the ionized air ejected from the static elimination nozzle 41 may be changed. In this case, when the object is positively charged, negative ions are ejected, such that ions having the opposite polarity to the charged polarity of the object are ejected.

  As described above, both the injection amount of compressed air from the dust removal nozzles 31 and 32 and the injection amount of ionized air from the static elimination nozzle 41 may be controlled based on the measurement result from the dust removal monitoring means. Alternatively, one of the injection amount of compressed air and the injection amount of ionized air may be controlled. In this way, based on the measurement result from the dust removal monitoring means, at least one of the injection amount of compressed air from the dust removal nozzles 31 and 32 and the injection amount of ionized air from the static elimination nozzle 41 is controlled. By doing so, the dust adhering to the object can be efficiently removed.

  As described above, based on the signals from the potential sensor 75 and the dust sensor 76, the control of the injection amount of the compressed air from the dust removing nozzles 31 and 32 and the control of the injection amount of the ionized air from the static elimination nozzle 41 are targeted. It enables injection of the optimum amount of compressed air or ionized air to the object W. Conventionally, a fixed amount of compressed air or ionized air is jetted regardless of the charged state of the object or the attached state of dust. In that case, compressed air will be jetted more than necessary to an object that does not have much dust, or compressed air will be sufficiently jetted to an object that has a large amount of dust attached. It was not done. Similarly, ionized air may be jetted more than necessary to an object that is not so charged, or ionized air may not be sufficiently jetted to an object that has a large amount of charge. In the dust removing device 10 described above, the problems of the conventional technique are solved, and the optimum amount of compressed air or ionized air is injected to the object W based on the signal from the dust removing monitoring means. Furthermore, by using the determination signals of the potential sensor 75 and the dust sensor 76 based on the preset determination standard, efficient and reliable dust removal and charge removal can be performed.

  A photoelectric sensor 77 is provided in the sensor box 74 shown in FIG. The photoelectric sensor 77 is for detecting whether or not the target object W is arranged in the accommodation space 11, and constitutes a target object detecting means for detecting the target object. The photoelectric sensor 77 is of a reflective type or a transmissive type, and any of them can be used. The reflection type has a light emitter/receiver in which a light emitting element that emits light toward the object W and a light receiving element that receives reflected light are incorporated. In the transmissive type, a light emitting element and a light receiving element are opposed to each other and separated, and an object is arranged between the light emitting element and the light receiving element.

  In this way, when the photoelectric sensor 77 detects the object W arranged in the accommodation space 11, the dust removing nozzle 31 and the charge eliminating nozzle 41 can be operated. At the same time, the lighting unit 48 can be activated.

  The fan motors 65 and 66 drive the two dust collecting fans 64 provided in the dust collecting unit 51, respectively, and the rotation speeds of the fan motors 65 and 66 are based on the output signal from the dust sensor 76 as the dust removal monitoring means. Controlled. It is also possible to control the rotation speeds of the fan motors 65 and 66 based on the output signal from the potential sensor 75 as the dust removal monitoring means. In that case, the output signal of the potential sensor 75 is sent to the dust collection control unit 72 via the dust removal control unit 71. Since the dust collection unit 51 includes the two fan motors 65 and 66, it can be controlled so that only one fan motor is driven.

  Further, the rotation speeds of the fan motors 65 and 66 may be controlled based on the injection amount of the compressed air ejected from the dust removing nozzles 31 and 32 or the injection amount of the ionized air ejected from the charge eliminating nozzle 41. .. After the injection of the compressed air from the dust removal nozzles 31 and 32 and the injection of the ionized air from the static elimination nozzle 41 are finished, the drive of the fan motors 65 and 66 is stopped.

  In order to detect the flow direction of the gas consisting of compressed air or ionized air blown on the object W around the object W, as shown in FIG. 10, an air volume sensor 47 as an air volume detection means is provided in the case 12. Will be placed. The detection signal of the air volume sensor 47 is sent to the dust removal control unit 71, and the mounting position of the dust removal unit 21 can be determined based on the detection signal of the air volume sensor 47. Further, when a plurality of dust collecting units are installed in the case 12, only the dust collecting units located in the direction in which the signals of the air volume sensors 47 are detected are driven based on the detection signals of the plurality of air volume sensors 47 to efficiently collect the dust. You can also do it. In that case, the air volume sensor 47 may be provided in the dust collecting unit 51.

  As shown in FIG. 10, in the dust collection unit 51, a rotation speed detection unit 78 that detects the rotation speed of the fan motors 65 and 66, and a current detection that detects the current value supplied to the fan motors 65 and 66. And a part 79 are provided.

  The filter 68 on the outlet side shown in FIG. 8 is used to capture the dust contained in the air that has flowed into the dust collection unit 51. When the captured dust causes clogging of the filter 68, the filter 68 The ventilation resistance of 68 increases. When the ventilation resistance increases, the rotation speeds of the fan motors 65 and 66 decrease, and the current value of the motor increases. When the number of rotations of the fan motors 65 and 66 detected by the number-of-rotations detection unit 78 is lower than the reference value, it is determined that the filter 68 is clogged. On the other hand, when the current value of the fan motors 65 and 66 detected by the current detection unit 79 exceeds the reference value, it is determined that the filter 68 is clogged. Thus, when it is determined that the filter 68 is clogged by at least one of the rotation speed detection unit 78 and the current detection unit 79, the operation panel 80 provided on the front wall 24 of the dust removal unit 21 is operated. The alarm activates.

  The dust removal control unit 71 is connected to an external control device such as a computer or PLC via a connector provided on the dust removal unit 21. For example, the output signal of the potential sensor 75 is output to an external control device. Further, the determination standard of the potential sensor 75 is set by an external control device. On the other hand, since the dust collection control unit 72 is connected to the dust removal control unit 71 by the signal cable 73, the dust removal unit 21 and the dust collection unit 51 can be centrally managed by an external control device. For example, the output signal of the dust sensor 76 can be output to an external control device. Further, the criteria for the dust sensor 76 can be set from an external control device. Further, when the filter 68 is clogged, an alarm signal can be output to an external control device. Further, the rotation speeds of the fan motors 65 and 66 can be set from an external control device.

  FIG. 11 is a front view showing the operation panel 80 provided on the front wall 24 of the dust removing unit 21. The operation panel 80 is provided with a buzzer that operates when it is determined that the filter 68 is clogged. The lamp may be turned on instead of the buzzer.

  The operation panel 80 is provided with a blow time setting unit 81. The blow time setting unit 81 may set a time at which the compressed air is discharged from the dust removing nozzles 31 and 32. The frequency of the ON operation and the OFF operation of the compressed air intermittently discharged from the dust removing nozzles 31 and 32 may be input by the frequency setting unit 82. The blow time setting unit 81 and the frequency setting unit 82 constitute a setting unit for inputting operating conditions of the dust removing device 10, respectively.

  When using a plurality of dust removing units 21, the dust removing control unit 71 can be connected in a daisy chain manner. An input/output terminal 83 for daisy chain connection is provided on the operation panel 80. In this way, the plurality of dust removal control units 71 can be connected by the signal cable. An address setting unit 84 for daisy chain connection is provided on the operation panel 80. Further, a pressure gauge 85 for displaying the pressure of the compressed air supplied to the ion generator 45 is provided on the operation panel 80.

  A power supply lamp 87 that lights when the power switch 86 is turned on, an alarm lamp 88 that lights when a sensor such as the potential sensor 75 or the ion generator 45 fails, the discharge time of the ion generator 45, the solenoid valve 37, The operation panel 80 is provided with a maintenance lamp 89 that lights up when the number of operations of 44 exceeds the set number. Further, an operation indicator lamp 91 indicating that the ion generator 45 is operating, a potential sensor output lamp 92 that lights up when the potential sensor 75 outputs a signal, and a dust sensor output lamp that lights up when the dust sensor 76 outputs a signal. 93 and 93 are respectively provided on the operation panel 80. The dust sensor output lamp 93 has three lamps 93a, 93b, and 93c, and performs color display in three stages according to the detected amount of dust. The lamps 87 to 93 described above form a display unit that displays the operating state of the dust removing device 10.

  Further, a maintenance switch 94 is provided on the operation panel 80. When the maintenance switch 94 is turned on, the number of times the solenoid valves 37 and 44 are operated and the discharge time of the ion generator 45 are recorded in the memory.

  As shown in FIGS. 4 and 5, a connector region 95 is provided on the side wall 27 of the dust removing unit 21. The connector region 95 is provided with a power supply connector, an external control device connector, a dust collection unit connection connector, a plurality of sensor connection connectors, and the like.

  The present invention is not limited to the above-mentioned embodiment, and various modifications can be made without departing from the spirit of the invention.

10 Dust Removal Device 11 Storage Space 12 Case 21 Dust Removal Unit 22 Unit Case 29 Openings 31, 32 Dust Removal Nozzle 33 Supply Port 34 Supply Source 36 Throttle Valve 37 Electromagnetic Valve 38 Pulse Air Generator 41 Static Elimination Nozzle 43 Regulator 44 Electromagnetic Valve 45 Ion Generator 46 Opening 47 Airflow Sensor 50 Mounting Bracket 51 Dust Collection Unit 52 Unit Case 59 Dust Collection Space 61 Suction Port Frame 62 Filter 64 Dust Collection Fan 65 Fan Motor 67 Discharge Frame 68 Filter 71 Dust Removal Control Section 72 Dust Collection Control Section 73 signal cable 75 potential sensor 76 dust sensor 77 photoelectric sensor 80 operation panel

Claims (13)

A dust removing device for removing dust of an object placed in a storage space,
A dust removal unit that is detachably attached to a case that forms the accommodation space and that includes a first attachment/detachment surface that forms at least a part of a wall of the case;
A supply port provided in the dust removal unit and connected to a supply source of compressed air,
A dust removing nozzle which is provided on the first attachment/detachment surface of the dust removing unit and ejects the compressed air supplied to the supply port toward an object;
A dust removing device, wherein the dust removing unit can be attached to any of the cases in which a plurality of openings are formed in the wall body. The dust remover according to claim 1,
An ion generator that ionizes the compressed air supplied to the supply port is provided in the dust removal unit,
A dust remover in which a static elimination nozzle for ejecting ionized air generated by the ion generator toward an object is provided on the first attachment/detachment surface. The dust remover according to claim 1 or 2,
The first attachment/detachment surface is formed of a first contact portion that comes into contact with the wall body and a first exposed portion that is exposed to the accommodation space,
The dust remover, wherein the first exposed portion is surrounded by the first contact portion. The dust remover according to claim 3,
The case has at least two of the openings,
At least one of the openings corresponds to the first exposed portion and is smaller than the first attachment/detachment surface. The dust remover according to claim 1 or 2,
A dust collection unit that is detachable from the case and has a second attachment/detachment surface that forms at least a part of the wall of the case is provided. A dust removing device in which a dust collecting fan for sucking is provided in the dust collecting unit. The dust remover according to claim 5,
The first attachment/detachment surface is formed of a first contact portion that comes into contact with the wall body and a first exposed portion that is exposed to the accommodation space,
The second attachment/detachment surface is formed by a second contact portion that comes into contact with the wall body and a second exposed portion that is exposed to the accommodation space,
The first exposed portion is surrounded by the first contact portion,
The dust remover, wherein the second exposed portion is surrounded by the second contact portion. The dust remover according to claim 6,
The case has at least three openings,
At least one of the openings corresponds to the first exposed portion and is smaller than the first attachment/detachment surface,
At least one of the openings corresponds to the second exposed portion and is smaller than the second attachment/detachment surface. The dust remover according to any one of claims 5 to 7,
A dust removing device, wherein a dust removing control unit for controlling an electromagnetic valve provided between the dust removing nozzle and the supply port and a dust collecting control unit for controlling the fan motor can be connected by a signal cable. The dust remover according to any one of claims 5 to 7,
The dust collecting unit includes a filter that captures the dust. The dust remover according to any one of claims 1 to 9,
A dust remover having an air volume detection means for detecting an air volume of gas blown to an object. The dust remover according to claim 10,
The dust removing device detects the flow direction of the gas blown to the object and outputs a detection signal to the outside. The dust remover according to any one of claims 1 to 11,
The said dust removal unit is a dust removal apparatus which has a setting part which inputs an operating condition, and a display part which displays an operating state. The dust remover according to any one of claims 1 to 12,
The dust removal unit has an illumination unit that lights toward the accommodation space.
Dust removal device.

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