WO2017031930A1 - 检测装置及包括其的工件清洗设备 - Google Patents

检测装置及包括其的工件清洗设备 Download PDF

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Publication number
WO2017031930A1
WO2017031930A1 PCT/CN2016/070773 CN2016070773W WO2017031930A1 WO 2017031930 A1 WO2017031930 A1 WO 2017031930A1 CN 2016070773 W CN2016070773 W CN 2016070773W WO 2017031930 A1 WO2017031930 A1 WO 2017031930A1
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WIPO (PCT)
Prior art keywords
bracket
magnetic sensor
detecting device
section
workpiece
Prior art date
Application number
PCT/CN2016/070773
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English (en)
French (fr)
Inventor
赵寅初
刘海滨
曹保桂
宁培桓
王振东
李丹
Original Assignee
京东方科技集团股份有限公司
合肥京东方光电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 京东方科技集团股份有限公司, 合肥京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/325,414 priority Critical patent/US9976873B2/en
Priority to EP16822362.6A priority patent/EP3342491B1/en
Publication of WO2017031930A1 publication Critical patent/WO2017031930A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/022—Cleaning travelling work
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/14—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields

Definitions

  • the present invention relates to the field of liquid crystal display manufacturing technology, and in particular, to a detecting device and a workpiece cleaning device.
  • a detecting device is required to detect position information of the workpiece during handling and cleaning of the workpiece, and transmit the detected signal to the control system of the device. in.
  • the fiber optic sensor includes an ejector and a receiver, and an ejector and a receiver are mounted above the transport section of the workpiece cleaning apparatus.
  • the controller of the device can control the switch to open or close according to the signal.
  • the workpiece is cleaned by spraying liquid during the conveyance of the workpiece, and because the liquid has a function of refracting and reflecting light, when the light is refracted, there is a detection error; when the light is reflected, the ejector may be emitted.
  • the proximity switch uses the sensitivity of the displacement sensor to the approaching object to achieve the purpose of controlling the switch to open or close.
  • the proximity switch has good stability but its waterproofness is poor and cannot be used in a liquid environment.
  • High-pressure deionized water (De-Ion water) is generally used for rinsing. Since the pressure of the high-pressure deionized water is detected by the water pressure at the inlet end of the pipeline, the pressure at the outlet end and the abnormal use (including nozzle drop, pipe crack, abnormal spray direction, etc.) may not be accurately solved. ) Accurate and effective detection, which leads to abnormal problems such as abnormal cleaning and residual water stains during drying.
  • the technical problem to be solved by the present invention is to provide a detecting device capable of accurately detecting the position of a conveyed workpiece in a liquid environment.
  • the present invention provides a detecting device, comprising: a base, a bracket, a rocking bar, a first limiting rod and a first magnetic sensor, a bracket is disposed on the base, the swinging rod is swingably disposed on the bracket by a swinging shaft, and the swinging rod is divided into a dialing section and a triggering section by the swinging shaft, and the weight of the triggering section is greater than The weight of the toggle segment; the end of the trigger segment is provided with a magnetic block, the end of the toggle segment is higher than the upper edge of the bracket in an initial state; the first limit bar is disposed at The bracket is configured to limit the trigger segment; the first magnetic sensor is disposed on the bracket, and is located near a virtual extension when the trigger segment is limited by the first limit bar.
  • the detecting device further includes a second limiting rod and a second magnetic sensor, wherein the second limiting rod is disposed on the bracket, and the swinging shaft and the first limiting rod are in the bracket a triangular arrangement in the plane, the trigger segment being swingable between the first limit bar and the second limit bar; the second magnetic sensor being disposed on the bracket and located in the trigger segment Near the virtual extension when the second limit bar is limited.
  • the bracket includes a first bracket plate and a second bracket plate which are arranged in parallel and spaced apart from each other, the first bracket plate and the second bracket plate being vertically fixed to the base, and the limitation Both the position bar and the swinging shaft are disposed across the first and second bracket plates.
  • the end of the toggle segment is provided with a pulley.
  • the end of the trigger segment is provided with a mounting hole, and the magnetic block is disposed in the mounting hole and sealed by the end cap.
  • At least one of the first limiting rod and the rocking rod is made of a conductive ultra-high molecular weight polyethylene material.
  • the second limit rod is made of a conductive ultra high molecular weight polyethylene material.
  • At least one of the base, the bracket, the rocking bar is made of a conductive ultra high molecular weight polyethylene material.
  • the detection means generates a corresponding detection result if the time period during which the magnetic sensor continuously detects the magnetic field signal exceeds a time threshold.
  • the triggering section of the swinging lever approaches the first magnetic sensor in an initial state and is remote from the first magnetic sensor by gravity exerted by a workpiece above the detecting device, To detect if the workpiece passes over the device.
  • the triggering segment of the swinging lever approaches the first magnetic sensor in an initial state and the gravity applied by the workpiece above the detecting device Moving away from the first magnetic sensor to detect whether the workpiece passes over the device, and the triggering section of the swinging rod is approached by the further action of the excessive pressure exerted by the cleaning fluid sprayed by the spraying device on the workpiece
  • the second magnetic sensor detects whether the spraying device is normal.
  • the invention also provides a workpiece cleaning apparatus comprising at least one of the above-described detection devices.
  • the detecting device of the invention has simple structure, is easy to implement installation, and uses a magnetic sensor to detect a magnetic field signal, and the magnetic sensor is not affected by a liquid or a humid environment, thereby reducing detection errors and improving detection accuracy.
  • FIG. 1 is a schematic structural view of a detecting device according to an embodiment of the present invention.
  • FIG. 2 is a front elevational view showing the detecting device removing a side bracket plate according to an embodiment of the present invention
  • FIG. 3 is a schematic view showing the operation of the detecting device in the embodiment of the present invention when the workpiece passes;
  • Fig. 4 is a schematic view showing the operation of the detecting device in the embodiment of the present invention when the dialing section is indirectly subjected to excessive liquid pressure.
  • Fig. 1 shows a perspective view of an embodiment of a detecting device of the present invention
  • Fig. 2 shows a view of the detecting device embodiment of the present invention in the case where a bracket plate on one side is removed, in which a trigger is triggered.
  • the end of segment 5-2 is half cut.
  • the detecting device provided by the invention comprises a base 1, a bracket 2, a rocking rod 5, a first limiting rod 71 and a first magnetic sensor 31.
  • the bracket 2 is disposed on the base 1, and the swinging lever 5 is swingably disposed on the bracket 2 through the swinging shaft 6, and the swinging lever 5 is divided into the dialing section 5-1 and the triggering section 5-2 by the swinging shaft 6, and the triggering section 5-
  • the weight of 2 is greater than the weight of the toggle section 5-1.
  • the weight of the triggering section 5-2 can be set according to the process conditions, such as the weight of the workpiece 4 placed thereon, the moving speed, and the weight of the dialing section 5-1, as long as normal conditions can be achieved. Just test it. This embodiment does not specifically limit the weight of the trigger segment 5-2.
  • the end of the trigger section 5-2 is provided with a magnet block 52, and in the initial state, the end of the dial section 5-1 is higher than the upper edge of the bracket 2.
  • the first limiting rod 71 is disposed on the bracket 2, and the first limiting rod 71 is located below the swinging shaft 6 for limiting the triggering section 5-2; the first magnetic sensor 31 is disposed on the bracket 2, and is first The magnetic sensor 31 is located near the virtual extension when the trigger section 5-2 is limited by the first limit lever 71. It should be noted that, referring to FIG. 2, the vicinity of the virtual extension portion when the first magnetic sensor 31 is located at the limit of the triggering portion 5-2 by the first limiting rod 71 means that the first limiting rod 71 is triggered by the triggering portion 5-2.
  • the magnetic block 52 disposed at the end of the trigger segment 5-2 at the time limit can be sufficiently close to the first magnetic sensor 31 to enable the first magnetic sensor 31 to receive the magnetic field of the magnetic block 52.
  • the detecting device is installed at a position below the conveying section of the workpiece cleaning device, and the conveying section is composed of a plurality of conveying rollers arranged in parallel at intervals, so that the dialing section 5-1 is extended from the gap between the conveying rollers to the conveying.
  • the first magnetic sensor 31 is communicatively coupled to the control system of the workpiece cleaning apparatus.
  • the detecting device is provided with a first limiting lever 71 and a first magnetic sensor 31. As shown in FIG.
  • the trigger segment 5-2 when no workpiece passes, since the weight of the trigger segment 5-2 is greater than the toggle segment 5-1, the trigger segment 5-2 is in the lower position, and is limited by the first limit bar 71, and the trigger segment 5
  • the magnetic field of the magnetic block 52 on -2 is detected by the first magnetic sensor 31, the signal detection state of the first magnetic sensor 31 is ON, and the determination state is that the conveyed workpiece is not detected.
  • the workpiece 4 comes into contact with the toggle section 5-1 of the swinging lever 5, causing the rocking lever 5 to rotate about the swinging shaft 6, and the triggering section 5-2 is away from the first limiting lever 71.
  • the magnetic block 52 no longer triggers the first magnetic sensor 31, the signal detection state of the first magnetic sensor 31 is OFF, and the determination state is that the conveyed workpiece is detected.
  • the above detection process is as shown in Table 1, and the first magnetic sensor 31 transmits the detected signal to the control system, thereby Take the appropriate controls.
  • the detecting device of the invention adopts the mechanical + electromagnetic method for detecting, and uses the magnetic sensor to detect the magnetic field signal, is not affected by the liquid or the humid environment, reduces the detection error, improves the detection accuracy, and avoids the control deviation of the controller in the device or Mis-control, reduce equipment failure, increase utilization rate and production efficiency.
  • the detecting device of the invention has a simple structure and is easy to implement installation.
  • the detecting device further includes a second limiting rod 72 and a second magnetic sensor 32.
  • the second limiting rod 72 is disposed on the bracket 2, the second limiting rod 72 and the swinging shaft 6 and the first limit.
  • the rod 71 is arranged in a triangle in the plane of the bracket 2, and the triggering section 5-2 is used for moving between the first limiting rod 71 and the second limiting rod 72, that is, the triggering section 5-2 is at the first limit.
  • the lever 71 swings between the second limit lever 72.
  • the second magnetic sensor 32 is disposed on the bracket 2, and the second magnetic sensor 32 is located near the virtual extension when the trigger segment 5-2 is restrained by the second limiting lever 72. It should be noted that, referring to FIG.
  • the second magnetic sensor 32 is located near the virtual extension when the trigger segment 5-2 is limited by the second limiting rod 72, and is referred to as the second limiting rod 72 at the trigger segment 5-2.
  • the magnetic block 52 disposed at the end of the trigger segment 5-2 at the time limit can be sufficiently close to the second magnetic sensor 32 to enable the first magnetic sensor 31 to receive the magnetic field of the magnetic block 52.
  • the detecting device of the present invention When the detecting device of the present invention is used, the detecting device is disposed at a position opposite to the water discharge end of the spray pipe.
  • Table 2 when the spray pipe is in a normal state (whether or not the workpiece 4 passes through the transfer section), the toggle section 5-1 of the rocking lever 5 is only swung by the pressure when the workpiece 4 passes, but the trigger section 5- 2 can not be rotated to the position of the second limiting rod 72, the second magnetic sensor 32 is in the OFF state, the first magnetic sensor 31 is in the ON state or the OFF state; as shown in FIG.
  • the magnetic field generated by the magnetic block in the trigger segment 5-2 is detected by the second magnetic sensor 32, so that the detection state of the second magnetic sensor 32 is in the ON state, and the detection state of the first magnetic sensor 31 is in the OFF state.
  • the control system of the workpiece cleaning apparatus judges by the signals detected by the first magnetic sensor 31 and the second magnetic sensor 32, thereby determining whether or not to issue an alarm signal.
  • the detecting device of the invention can detect the abnormality of the water outlet end of the water pipe, promptly alarm, clear the fault, and avoid bad anomalies such as incomplete cleaning and water stain residue during drying.
  • the end of the toggle section is provided with a pulley 51.
  • the provision of the pulley 51 at the end of the dialing section can avoid the scratching of the workpiece by the dialing section, reduce the resistance of the dialing section to the workpiece during the conveying process, and make the workpiece conveying process smoother and faster.
  • the bracket 2 includes a first bracket plate 21 and a second bracket plate 22 that are parallel, the first bracket plate 21 and the second bracket plate 22 are vertically fixed to the base 1, and the first The limiting lever 71, the second limiting lever 72 and the swinging shaft 6 are both disposed across the first bracket plate 21 and the second bracket plate 22.
  • the rocking lever 5 swings in the space formed by the first bracket plate 21 and the second bracket plate 22, so that the working process of the detecting device is more secure and reliable.
  • the end of the triggering section 5-2 is provided with a mounting hole, and the magnetic block 52 is disposed in the mounting hole and then sealed by the end cap.
  • the magnetic block 52 is disposed in the mounting hole, and the damage caused by the collision of the magnetic block 52 with the first limiting rod 71 or the second limiting rod 72 is avoided, so that it is more durable.
  • the first limiting rod 71 and/or the second limiting rod 72, and the rocking rod 5 are made of a conductive ultra-high molecular weight polyethylene material.
  • the conductive ultra-high molecular weight polyethylene material has good impact resistance and large energy ratio, so that the kinetic energy of the rocking rod 5 when being restrained is rapid The ground is absorbed and the rocking is reduced.
  • the conductive ultra-high molecular weight polyethylene material has the characteristics of good wear resistance, corrosion resistance and lubricity, and has certain conductivity, which can reduce the possibility of static electricity accumulating and penetrating the product.
  • the base 1, the bracket 2, the swinging rod 6 can also be made of a conductive ultra-high molecular weight polyethylene material, which can make the detecting device have better wear resistance, corrosion resistance, lubricating performance and certain electrical conductivity. Sexuality can reduce the possibility of static buildup of breakdown products.
  • the operation principle of the detecting device is as follows: the signals output by the first magnetic sensor 31 and the second magnetic sensor 32 are correspondingly detected, when the detection state of the first magnetic sensor 31 is ON, the second magnetic sensor 32 When the detection state is OFF, it indicates that the swing lever 5 and the first magnetic sensor 31 are close to each other, and the detecting device does not detect the conveyed workpiece; when the detection states of the first magnetic sensor 31 and the second magnetic sensor 32 are both OFF, The swing lever 5 swings to a position intermediate the first magnetic sensor 31 and the second magnetic sensor 32, and the detecting device detects the conveyed workpiece; when the detection state of the first magnetic sensor 31 is OFF, the detection state of the second magnetic sensor 32 is ON. At this time, it is indicated that the swing lever 5 and the second magnetic sensor 32 are close to each other, and the spray device above the detecting device is abnormal (for example, the water pressure is too large), resulting in abnormal cleaning.
  • the spray device above the detecting device is abnormal (for example, the water pressure is too large), resulting
  • a time threshold may be set on the control program for the detection signals of the first magnetic sensor 31 and the second magnetic sensor 32, such as 0.1 for the first magnetic sensor 31 and the second magnetic sensor 32.
  • ⁇ 0.2 second time threshold when the trigger segment 5-2 swings in a small amplitude and short time (such as abnormal swing) in a liquid environment, the time when the first sensor 31 and the second sensor 32 detect the magnetic field signal is smaller than the control program.
  • the set time threshold the control program is not triggered, and the control signal is not sent to the controlled component; otherwise, when the toggle segment 5-1 is in contact with the workpiece 4 moving on the transport segment, the trigger segment 5-2 is greatly generated.
  • the long-time swing (as in the normal detection process), the time when the first magnetic sensor 31 and the second magnetic sensor 32 detect the magnetic field signal is greater than the time threshold set in the control program, the control program is triggered, and is controlled
  • the component sends a control signal. Therefore, setting the event threshold in the control program can detect more accurately and effectively, reduce the probability of false triggering, and facilitate maintenance and adjustment of the device.
  • the present invention also provides a workpiece cleaning apparatus comprising at least one of the detection devices of any of the above embodiments.
  • the detection device provided by the present invention can be applied in a liquid environment to accurately detect the position of the workpiece.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
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  • Geophysics And Detection Of Objects (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

公开了一种检测装置，涉及液晶显示制造技术领域，该检测装置包括底座（1）、支架（2）、摇摆杆（5）、第一限位杆（71）和第一磁性传感器（31），所述支架（2）设于所述底座（1）上，所述摇摆杆（5）通过摇摆转轴（6）可摆动地设于所述支架（2），且所述摇摆杆（5）被所述摇摆转轴（6）分为拨动段（5-1）和触发段（5-2），所述触发段（5-2）的重量大于所述拨动段（5-1）的重量；所述触发段（5-2）的端部设有磁块（52），所述拨动段（5-1）的端部在初始状态下高于所述支架（2）的上缘；所述第一限位杆（71）设于所述支架（2）上，用于限位所述触发段（5-2）；所述第一磁性传感器（31）设于所述支架（2）上，且位于所述触发段（5-2）被所述第一限位杆（71）限位时的虚拟延长部附近。该检测装置可以应用在液体环境中，实现对工件位置进行准确地检测。

Description

检测装置及包括其的工件清洗设备 技术领域
本发明涉及液晶显示制造技术领域，尤其涉及一种检测装置及工件清洗设备。
背景技术
在现有技术的TFT-LCD(液晶平板显示器)行业内使用的工件清洗设备中，需要检测装置来在工件的搬运和清洗期间检测工件的位置信息，并将检测的信号发送到设备的控制系统中。
现有的检测装置一般采用光纤传感器或者接近开关。光纤传感器包括出射器和接收器和，出射器和和接收器和均安装于工件清洗设备的传送段上方。在使用时，当工件被传送到传送段时，出射器和射出的光线被工件反射，反射后的光线由接收器和接收，从而测得工件的位置。设备的控制器可以根据信号控制开关通或断。但是由于在传送段工件传送时还要喷撒液体对工件进行清洗，并且由于液体对光具有折射和反射的作用，当光发生折射时，存在检测误差；当光发生反射时可能将出射器射出的光线反射到接收器中时，会造成误控制。因此，存在发生工件碰撞的隐患。接近开关是利用位移传感器对接近物体的敏感特性来实现控制开关通或断的目的，接近开关稳定性好但是其防水性较差，无法在液体环境中使用。
同时，TFT-LCD行业内，一般采取高压去离子水(De-Ion water)进行冲洗。由于采取管路中的进水端水压检测高压去离子水的压力，并无法准确对出水端压力以及使用异常(包括喷嘴脱落、管路裂纹、喷射方向异常等导致的水压过大等问题)进行准确有效检测，进而导致清洗异常，干燥时水渍残留等异常问题。
发明内容
(一)要解决的技术问题
本发明要解决的技术问题是提供一种检测装置，能够在液体环境中对搬送的工件的位置进行准确检测。
(二)技术方案
为了解决上述技术问题，本发明提供了一种检测装置，其特征在于，包括底座、支架、摇摆杆、第一限位杆和第一磁性传感器，所述 支架设于所述底座上，所述摇摆杆通过摇摆转轴可摆动地设于所述支架，且所述摇摆杆被所述摇摆转轴分为拨动段和触发段，所述触发段的重量大于所述拨动段的重量；所述触发段的端部设有磁块，所述拨动段的端部在初始状态下高于所述支架的上缘；所述第一限位杆设于所述支架上，用于限位所述触发段；所述第一磁性传感器设于所述支架上，且位于所述触发段被所述第一限位杆限位时的虚拟延长部附近。
根据可选实施例，该检测装置还包括第二限位杆和第二磁性传感器，所述第二限位杆设于所述支架，与所述摇摆转轴及第一限位杆在所述支架的平面中呈三角形布置，所述触发段能够在所述第一限位杆与第二限位杆之间摆动；所述第二磁性传感器设于所述支架上，且位于在所述触发段被第二限位杆限位时的虚拟延长部附近。
根据可选实施例，所述支架包括相互平行布置并且间隔开的第一支架板和第二支架板，所述第一支架板和第二支架板竖直固定于所述底座，且所述限位杆和摇摆转轴均跨越所述第一支架板和第二支架板设置。
根据可选实施例，所述拨动段的端部设有滑轮。
根据可选实施例，所述触发段的端部设有安装孔，所述磁块设于安装孔中，且用端盖密封。
根据可选实施例，所述第一限位杆、摇摆杆中的至少一个采用导电性超高分子量聚乙烯材料制成。
根据可选实施例，所述第二限位杆采用导电性超高分子量聚乙烯材料制成。
根据可选实施例，所述底座、支架、摇摆杆中的至少一个采用导电性超高分子量聚乙烯材料制成。
根据可选实施例，在所述磁性传感器持续检测到磁场信号的时间段超过时间阈值的情况下，所述检测装置生成相应的检测结果。
根据可选实施例，所述摆动杆的触发段在初始状态下接近所述第一磁性传感器，并且在经过所述检测装置的上方的工件施加的重力的作用下远离所述第一磁性传感器，以检测工件是否经过所述装置的上方。
根据可选实施例，所述摆动杆的触发段在初始状态下接近所述第一磁性传感器，并且在经过所述检测装置的上方的工件施加的重力的 作用下远离所述第一磁性传感器，以检测工件是否经过所述装置的上方，并且所述摆动杆的触发段在喷洒装置喷洒的清洗液对所述工件施加的过大压力的进一步作用下接近所述第二磁性传感器，以检测所述喷洒装置是否正常。
本发明还提供了一种工件清洗设备，包括至少一个上述的检测装置。
(三)有益效果
本发明的上述技术方案与现有技术相比，具有如下优点：
本发明的检测装置结构简单，易实施安装，且采用磁性传感器检测磁场信号，磁性传感器不受液体或者潮湿环境的影响，减少检测的误差，提高检测准确度。
附图说明
包括附图以提供对实施例的进一步理解并且附图被并入本说明书中并且构成本说明书的一部分。附图图示了实施例并且与描述一起用于解释实施例的原理。将容易认识到其它实施例和实施例的很多预期优点，因为通过引用以下详细描述，它们变得被更好地理解。附图的元件不一定是相互按照比例的。同样的参考数字指代对应的类似部件。
图1是本发明实施例检测装置的结构示意图；
图2是本发明实施例检测装置去除一侧支架板的主视图；
图3是本发明实施例检测装置在工件通过时的工作示意图；
图4是本发明实施例检测装置在使用时拨动段间接受到液体过大压力时的工作示意图。
图中：1：底座；2：支架；21：第一支架板；22：第二支架板；31：第一磁性传感器；32：第二磁性传感器；4：工件；5：摇摆杆；5-1：拨动段；5-2：触发段；51：滑轮；52：磁块；6：摇摆转轴；71：第一限位杆；72：第二限位杆。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明 保护的范围。
参见图1和2，其中，图1示出了本发明的检测装置实施例的立体视图；图2示出了本发明检测装置实施例在去掉一侧的支架板的情况下的视图，其中触发段5-2的端部被半剖。本发明提供的检测装置包括底座1、支架2、摇摆杆5、第一限位杆71和第一磁性传感器31。支架2设于底座1上，摇摆杆5通过摇摆转轴6可摆动地设于支架2，且摇摆杆5被摇摆转轴6分为拨动段5-1和触发段5-2，触发段5-2的重量大于拨动段5-1的重量。需要说明的是，触发段5-2的重量可以根据工艺条件，如根据放置在其上的工件4的重量、移动速度以及拨动段5-1的重量等参考因素设置，只要能够实现正常的检测即可。本实施例对触发段5-2的重量不做具体限制。触发段5-2的端部设有磁块52，在初始状态下，拨动段5-1的端部高于支架2的上缘。第一限位杆71设于支架2上，并且第一限位杆71位于摇摆转轴6的下方，用于限位触发段5-2；第一磁性传感器31设于支架2上，且第一磁性传感器31位于触发段5-2被第一限位杆71限位时的虚拟延长部附近。需要说明的是，参考图2，第一磁性传感器31位于触发段5-2被第一限位杆71限位时的虚拟延长部附近是指在触发段5-2被第一限位杆71限位时触发段5-2的端部设置的磁块52与第一磁性传感器31能够足够靠近，以使第一磁性传感器31能够接收到磁块52的磁场。
在使用时，将本检测装置安装于工件清洗设备的传送段下方位置，传送段由多个间隔平行排列的传送辊组成，使拨动段5-1从传送辊之间的间隙伸出到传送辊所在平面的上方，同时将第一磁性传感器31与工件清洗设备的控制系统通信连接。该检测装置设置有第一限位杆71和第一磁性传感器31。如图2所示，当无工件通过时，由于触发段5-2的重量大于拨动段5-1，触发段5-2处于下方位置，被第一限位杆71限位，触发段5-2上的磁块52的磁场被第一磁性传感器31检测到，第一磁性传感器31的信号检测状态为ON，判定状态为未检测到搬送的工件。如图3所示，当工件4通过时，工件4与摇摆杆5的拨动段5-1相接触，使摇摆杆5绕摇摆转轴6转动，触发段5-2远离第一限位杆71，磁块52不再触发第一磁性传感器31，第一磁性传感器31的信号检测状态为OFF，判定状态为检测到搬送的工件。上述的检测过程如表1所示，第一磁性传感器31将检测到的信号发送给控制系统，从而 进行相应的控制。本发明的检测装置采用机械+电磁的方式进行检测，采用磁性传感器检测磁场信号，不受液体或者潮湿环境的影响，减少检测的误差，提高检测准确度，避免设备中的控制器产生控制偏差或发生误控制，减少设备故障，提高稼动率和生产效率。本发明的检测装置结构简单，易实施安装。
表1：
Figure PCTCN2016070773-appb-000001
根据另一实施例，该检测装置还包括第二限位杆72和第二磁性传感器32，第二限位杆72设于支架2，第二限位杆72与摇摆转轴6及第一限位杆71在所述支架2的平面中呈三角形布置，触发段5-2用于在第一限位杆71与第二限位杆72之间活动，即触发段5-2在第一限位杆71与第二限位杆72之间摆动。第二磁性传感器32设于支架2上，且第二磁性传感器32位于触发段5-2被第二限位杆72限位时的虚拟延长部附近。需要说明的是，参考图2，第二磁性传感器32位于触发段5-2被第二限位杆72限位时的虚拟延长部附近是指在触发段5-2被第二限位杆72限位时触发段5-2的端部设置的磁块52与第二磁性传感器32能够足够靠近，以使第一磁性传感器31能够接收到磁块52的磁场。
在使用本发明的检测装置时，将检测装置设置在与喷洒水管出水端相对的位置。如表2所示，当喷洒水管处于正常状态时(无论是否有工件4通过传送段)，摇摆杆5的拨动段5-1仅受到工件4通过时的压力而摆动，但触发段5-2无法转动到第二限位杆72的位置，第二磁性传感器32处于OFF状态，第一磁性传感器31处于ON状态或者OFF状态；如图4所示，当喷洒水管的出水端发生异常时，如水压过大，则喷洒水管喷出的清洗液会对工件4产生较大的冲击力(向下的冲击力)，而由于触发段5-2的重力作用，会带动拨动段5-1朝向与工件4运动方向相反的方向(即向上)运动(也即是触发段5-2有恢复自然下垂的趋势)，而由于拨动段5-1在自然状态时会伸出到传送辊所在平面的上方，所以在触发段5-2恢复自然下垂的趋势的过程中，会受到工件4的阻力(在图4中省去对工件4的描绘)，并且在工件4在受到清洗液的较大的冲击力的时候，工件4对摇摆杆5的拨动段5-1也会产生较 大的压力，使摇摆杆5的触发段5-2转动到靠近第二限位杆72的位置(此时摇摆杆5受惯性作用运动，拨动段5-1与工件4可能会脱离接触)。此时，触发段5-2中的磁块产生的磁场被第二磁性传感器32检测到，使第二磁性传感器32的检测状态处于ON状态，同时，第一磁性传感器31的检测状态处于OFF状态。工件清洗设备的控制系统通过第一磁性传感器31和第二磁性传感器32检测到的信号进行判断，从而决定是否发出报警信号。相应地，本发明的检测装置能够检测水管的出水端发生异常的情况，及时报警，清除故障，避免清洗不彻底和干燥时水渍残留等不良异常。
表2：
Figure PCTCN2016070773-appb-000002
上述的ON指触发状态；OFF指非触发状态。
优选地，拨动段的端部设有滑轮51。在拨动段的端部设有滑轮51可以避免拨动段划伤工件，减小拨动段对工件搬送过程中的阻力，使工件搬送过程更加平稳快速。
优选地，如图1所示，支架2包括相平行的第一支架板21和第二支架板22，所述第一支架板21和第二支架板22竖直固定于底座1，且第一限位杆71、第二限位杆72和摇摆转轴6均跨越第一支架板21和第二支架板22设置。摇摆杆5在第一支架板21和第二支架板22形成的空间内进行摆动，使检测装置的工作过程更加安全可靠。
优选地，如图2所示，触发段5-2的端部设有安装孔，磁块52设于安装孔中，然后用端盖密封。将磁块52设于安装孔中，避免了磁块52由于与第一限位杆71或者第二限位杆72碰撞导致的损坏，因此更加持久耐用。
优选地，第一限位杆71和/或第二限位杆72，以及摇摆杆5采用导电性超高分子量聚乙烯材料制成。导电性超高分子量聚乙烯材料的耐冲击性能好，能量比大，如此能够使摇摆杆5被限位时的动能迅速 地被吸收，减少摇摆，同时导电性超高分子量聚乙烯材料具有耐磨损、耐腐蚀、润滑性好的特点，并且具有一定的导电性，可以降低静电累积击穿产品的可能性。可选地，底座1、支架2、摇摆杆6也可选用导电性超高分子量聚乙烯材料制成，如此能够使得检测设备的耐磨损、耐腐蚀、润滑性能更好，并且具有一定的导电性，可以降低静电累积击穿产品的可能性。
根据另一实施例的检测装置的工作原理如下：通过第一磁性传感器31和第二磁性传感器32输出的信号进行相应检测，当第一磁性传感器31的检测状态为ON，第二磁性传感器32的检测状态为OFF时，表示摇摆杆5与第一磁性传感器31相互接近，并且检测装置未检测到搬送的工件；当第一磁性传感器31和第二磁性传感器32的检测状态均为OFF时，表示摇摆杆5摆动到第一磁性传感器31和第二磁性传感器32中间的位置，检测装置检测到搬送的工件；当第一磁性传感器31的检测状态为OFF，第二磁性传感器32的检测状态为ON时，表示摇摆杆5与第二磁性传感器32相互接近，并且检测装置上方的喷洒装置异常(如水压过大)，导致清洗异常。
优选地，针对不同机构的设备，可以针对第一磁性传感器31和第二磁性传感器32的检测信号在控制程序上设定时间阈值，如针对第一磁性传感器31和第二磁性传感器32设定0.1～0.2秒的时间阈值，当触发段5-2在液体环境下小幅度、短时间摆动(如异常摆动)时，第一传感器31和第二传感器32检测到磁场信号的时间小于控制程序中设定的时间阈值，控制程序不被触发，不会向被控部件发出控制信号；反之，当拨动段5-1与在传送段上移动的工件4接触时，触发段5-2发生大幅度、长时间的摆动(如在正常检测过程中那样)，第一磁性传感器31和第二磁性传感器32检测到磁场信号的时间大于控制程序中设定的时间阈值，控制程序被触发，向被控部件发出控制信号，因此，在控制程序中设定事件阈值能更加准确有效地进行检测，降低误触发的概率，便于设备的维护调整。
本发明还提供了一种工件清洗设备，包括至少一个上述任意一个实施例所述的检测装置。
综上所述，本发明提供的检测装置可以应用在液体环境中，实现准确地对工件的位置进行检测。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。需要理解的是，术语“上”、“下”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。措词‘包括’并不排除在权利要求未列出的元件或步骤的存在。元件前面的措词‘一’或‘一个’并不排除多个这样的元件的存在。在相互不同从属权利要求中记载某些措施的简单事实不表明这些措施的组合不能被用于改进。在权利要求中的任何参考符号不应当被解释为限制范围。

Claims (12)

  1. 一种检测装置，其特征在于，包括底座、支架、摇摆杆、第一限位杆和第一磁性传感器，所述支架设于所述底座上，所述摇摆杆通过摇摆转轴可摆动地设于所述支架，且所述摇摆杆被所述摇摆转轴分为拨动段和触发段，所述触发段的重量大于所述拨动段的重量；所述触发段的端部设有磁块，所述拨动段的端部在初始状态下高于所述支架的上缘；所述第一限位杆设于所述支架上，用于限位所述触发段；所述第一磁性传感器设于所述支架上，且位于所述触发段被所述第一限位杆限位时的虚拟延长部附近。
  2. 根据权利要求1所述的检测装置，其特征在于：该检测装置还包括第二限位杆和第二磁性传感器，所述第二限位杆设于所述支架，与所述摇摆转轴及第一限位杆在所述支架的平面中呈三角形布置，所述触发段能够在所述第一限位杆与第二限位杆之间摆动；所述第二磁性传感器设于所述支架上，且位于所述触发段被第二限位杆限位时的虚拟延长部附近。
  3. 根据权利要求1或2所述的检测装置，其特征在于：所述支架包括相互平行布置并且间隔开的第一支架板和第二支架板，所述第一支架板和第二支架板竖直固定于所述底座，且所述限位杆和摇摆转轴均跨越所述第一支架板和第二支架板设置。
  4. 根据权利要求1所述的检测装置，其特征在于：所述拨动段的端部设有滑轮。
  5. 根据权利要求1所述的检测装置，其特征在于：所述触发段的端部设有安装孔，所述磁块设于安装孔中，且用端盖密封。
  6. 根据权利要求1所述的检测装置，其特征在于：所述第一限位杆、摇摆杆中的至少一个采用导电性超高分子量聚乙烯材料制成。
  7. 根据权利要求2所述的检测装置，其特征在于：所述第二限位杆采用导电性超高分子量聚乙烯材料制成。
  8. 根据权利要求1所述的检测装置，其特征在于：所述底座、支架、摇摆杆中的至少一个采用导电性超高分子量聚乙烯材料制成。
  9. 根据权利要求1或2所述的检测装置，其特征在于，在所述磁性传感器持续检测到磁场信号的时间段超过时间阈值的情况下，所述 检测装置生成相应的检测结果。
  10. 根据权利要求1所述的检测装置，其特征在于，所述摆动杆的触发段在初始状态下接近所述第一磁性传感器，并且在经过所述检测装置的上方的工件施加的重力的作用下远离所述第一磁性传感器，以检测工件是否经过所述装置的上方。
  11. 根据权利要求2所述的检测装置，其特征在于，所述摆动杆的触发段在初始状态下接近所述第一磁性传感器，并且在经过所述检测装置的上方的工件施加的重力的作用下远离所述第一磁性传感器，以检测工件是否经过所述装置的上方，并且所述摆动杆的触发段在喷洒装置喷洒的清洗液对所述工件施加的过大压力的进一步作用下接近所述第二磁性传感器，以检测所述喷洒装置是否正常。
  12. 一种工件清洗设备，其特征在于，包括至少一个根据权利要求1至11中任一项所述的检测装置。
PCT/CN2016/070773 2015-08-24 2016-01-13 检测装置及包括其的工件清洗设备 WO2017031930A1 (zh)

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