WO2021110067A1 - 一种车间作业台 - Google Patents

一种车间作业台 Download PDF

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Publication number
WO2021110067A1
WO2021110067A1 PCT/CN2020/133459 CN2020133459W WO2021110067A1 WO 2021110067 A1 WO2021110067 A1 WO 2021110067A1 CN 2020133459 W CN2020133459 W CN 2020133459W WO 2021110067 A1 WO2021110067 A1 WO 2021110067A1
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Prior art keywords
parts
qualified
unqualified
electronic switch
platform
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PCT/CN2020/133459
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English (en)
French (fr)
Inventor
尤丹雷
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亚杰科技（江苏）有限公司
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Publication of WO2021110067A1 publication Critical patent/WO2021110067A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C7/00—Sorting by hand only e.g. of mail
    • B07C7/04—Apparatus or accessories for hand picking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby

Definitions

  • the invention relates to equipment for production.
  • the workbench in the workshop can be used to inspect parts, check the size, shape and position error, and appearance of the parts for defects.
  • Various inspection tools are placed on the workbench.
  • the result may be qualified or unqualified. Qualified parts are put into the first container, and unqualified parts are put into the second container. However, in actual work, workers are fatigued by working in front of the workbench for a long time, or due to lack of concentration, they will mistakenly put qualified parts into the second container and unqualified parts into the first container.
  • the technical problem solved by the present invention is as far as possible to prevent workers from mistakenly putting qualified parts into the unqualified parts container, and putting the unqualified parts into the qualified parts container.
  • a workshop workbench with a platform for qualified parts and a platform for unqualified parts, a slideway for qualified parts and a slideway for unqualified parts, lane changing blocks, push blocks, and qualified parts.
  • Parts buttons and unqualified parts buttons are arranged side by side, the qualified parts platform and the unqualified parts platform are arranged side by side, located at the upper end of the qualified parts slide and the unqualified parts slide.
  • One end of the track block is installed on the motor and swings between the qualified parts slide and the unqualified parts slide; the push block is located on the side of the qualified parts platform and the unqualified parts platform, which can connect the qualified parts platform and the unqualified parts platform.
  • the upper part is pushed into the qualified part slide or the unqualified part slide; the qualified parts platform is provided with a first sensing element, and the unqualified parts platform is provided with a second sensing element.
  • the first sensing element controls the on-off of the first electronic switch,
  • the second inductive element controls the on and off of the second electronic switch, the first electronic switch is connected in series with the button of the qualified part and the motor, and the second electronic switch is connected in series with the button of the unqualified part and the motor.
  • the worker inspects the parts on the workbench, puts the qualified parts on the qualified parts platform, the first sensor element senses, the first electronic switch is turned on, if the worker presses the qualified part button, the power supply passes the qualified part The button and the first electronic switch supply power to the motor.
  • the motor drives the lane-changing block to swing forward to block the slideway of the unqualified parts.
  • the slideway of the qualified parts is unblocked.
  • the push block pushes the qualified parts and the parts slide into the qualified parts slideway.
  • the slide slides into the container of qualified parts.
  • the worker places one part (unqualified part or qualified part) on the qualified parts platform or the unqualified parts platform at a time.
  • the lane-changing block and push block will act. If only the qualified parts are placed on the qualified parts platform, Failure to press the qualified parts button, or only pressing the qualified parts button without placing the qualified parts on the qualified parts platform, will not be able to connect the power supply to the motor and the circuit of the push block driving component. Therefore, the motor and the push block There is no movement of the driving element, and workers can immediately know their misoperation.
  • the lane changing block and push block will act. If only the unqualified parts are placed on the unqualified parts platform However, if the button of the unqualified part is not pressed, or the button of the unqualified part is pressed without placing the unqualified part on the platform of the unqualified part, the circuit of the power supply and the motor and the driving component of the push block cannot be connected. , There is no movement of the motor and the driving element of the push block, and the workers can immediately know their misoperation.
  • the invention can prevent the qualified parts from being erroneously flowed into the defective part container and prevent the defective parts from being flowed into the qualified part container.
  • Figure 1 is a schematic view of the workbench from the top view
  • Fig. 2 is a schematic view of Fig. 1 taken along the line A-A.
  • a workshop workbench is equipped with a qualified parts platform 11 and a disqualified part platform 12, a qualified part slide 21 and a defective part slide 22, a lane change block 23, a push block 30, and a qualified part.
  • Parts button 41 and defective parts button 42 are buttons 41 and defective parts button 42.
  • Qualified parts slides and unqualified parts slides are arranged side by side.
  • the qualified parts platform and the unqualified parts platform are arranged side by side. They are located at the upper end of the qualified parts slide and the unqualified parts slide.
  • One end of the lane change block is installed on the motor. On 24, swing between the chute of qualified parts and the chute of unqualified parts.
  • the pushing block 30 is located on one side of the qualified part platform and the unqualified part platform, and can push the parts on the qualified part platform and the unqualified part platform into the qualified part slideway or the unqualified part slideway. Specifically, there is a common area for the qualified parts slideway and the unqualified parts slideway. The parts that slide from the qualified parts platform and the unqualified parts platform first pass through the public area, and then enter the qualified parts slideway or the unqualified parts slideway. Specifically, it is controlled by the push block 30.
  • the qualified parts platform is provided with a first sensing element 13, and the unqualified parts platform is provided with a second sensing element 14.
  • the first sensing element controls the on and off of the first electronic switch 51, and the second sensing element controls the on and off of the second electronic switch 52.
  • the first electronic switch is connected in series with the qualified parts button and the motor, and the second electronic switch is connected in series with the unqualified parts button and the motor. Among them, both the qualified parts button and the unqualified parts button are connected to the power supply.
  • the worker inspects parts on the workbench, puts the qualified parts on the qualified parts platform 11, the first sensing element 13 senses, the first electronic switch 51 is turned on, if the worker presses the qualified parts button 41, the power supply passes the qualified parts button 41 and the first electronic switch 51 supply power to the motor 24.
  • the motor drives the lane-changing block 23 to swing forward, blocking the slideway 22 of the unqualified parts, the slideway 21 of the qualified parts is unblocked, the pushing block 30 pushes the qualified parts, and the parts slide in Qualified parts chute, slide into the container of qualified parts along the chute.
  • the first electronic switch 51 is connected to the first electromagnetic switch, the electromagnet 53 of the first electromagnetic switch is connected in series with the first electronic switch, the switching device 54 of the first electromagnetic switch is connected in series with the second electronic switch 52; the second electronic switch is connected in series with The second electromagnetic switch is connected, the electromagnet 55 of the second electromagnetic switch is connected in series with the second electronic switch, and the switching device 56 of the second electromagnetic switch is connected in series with the first electronic switch; the switching device of the first electromagnetic switch and the second electromagnetic switch
  • the switching devices of are all normally closed switches.
  • the side of the switching device of the first electromagnetic switch and the side of the switching device of the second electromagnetic switch are both provided with grounding contacts.
  • the first electromagnetic switch Under the adsorption of the electromagnet of the first electromagnetic switch, the first electromagnetic switch is attracted by the electromagnet.
  • the switching device of an electromagnetic switch can be in contact with the grounding contact, and under the adsorption of the electromagnet of the second electromagnetic switch, the switching device of the second electromagnetic switch can be in contact with the grounding contact.
  • the electromagnet 53 of the first electromagnetic switch is energized to attract the switching device 54 of the first electromagnetic switch, and the switching device of the first electromagnetic switch is connected to the ground
  • the contacts are in contact, so the negative pole of the motor is grounded, and the current direction is: power supply-qualified parts button 41-first electronic switch 51-electromagnet 53 of the first electromagnetic switch-switching device of the second electromagnetic switch 56-positive pole of the motor-motor
  • the negative pole-the switching device 54 of the first electromagnetic switch- is grounded. In this way, the motor rotates forward and drives the lane changing block 23 to swing forward.
  • the electromagnet 55 of the second electromagnetic switch is energized to attract the switching device 56 of the second electromagnetic switch, and the switching device of the second electromagnetic switch is connected with The grounding contact is in contact, so that the positive pole of the motor is grounded, and the current direction is: power supply-defective parts button 42-second electronic switch 52-electromagnet 55 of the second electromagnetic switch-switching device of the first electromagnetic switch 54-negative electrode of the motor -The positive pole of the motor-The switching device 56 of the second electromagnetic switch-is grounded. In this way, the motor reverses and drives the lane changing block 23 to swing in the reverse direction.
  • the first electronic switch 51 is a first transistor, the first sensing element 13 is a first piezoelectric element, and the first sensing element is connected to the base of the first electronic switch; the second electronic switch 52 is a second transistor, the second sensing element 14 is a second piezoelectric element, and the second sensing element is connected to the base of the second electronic switch.
  • the parts are placed on the qualified parts platform 11, and the first sensing element 13 is pressed to generate electric charges, which directly turn on the first electronic switch or turn on the first electronic switch after passing through an amplifier circuit.
  • the parts are placed on the unqualified parts platform 12, and the second sensing element 14 is pressed to generate electric charges, which directly turn on the second electronic switch or turn on the second electronic switch after passing through an amplifying circuit.
  • the push block 30 is installed on the piston rod of the cylinder 31.
  • the left and right chambers of the cylinder are connected to the two-position two-way solenoid valve 32, which is connected to the oil pump 33 and the oil return container 34;
  • the switch 51 and the second electronic switch 52 are both connected to one end of the three-position two-way solenoid valve, and the other end of the three-position two-way solenoid valve is connected to the cylinder button 35.
  • the second electronic switch 52 When the second electronic switch 52 is turned on and the defective part button 42 is pressed, one end of the three-position two-way solenoid valve is energized, and the oil pump is also energized.
  • the current direction is: power-defective parts button 42-No.
  • One end of the two electronic switch 52-three-position two-way solenoid valve 32 is energized, and at the same time, the oil pump 33 is energized. In this way, the oil pump works, the oil is supplied to the right chamber of the cylinder, the piston moves to the left, and the push block 30 is driven to move to the left.
  • the push block pushes the parts on the qualified parts platform 11 or the unqualified parts platform 12 into the corresponding slide.
  • the workbench is provided with a transformer 60, which is connected to the alternating current of the workshop, and the alternating current supplies power to the motor 24, the three-position two-way solenoid valve 32 and the oil pump 33 through the transformer.
  • One side of the workbench is provided with a depressed structure 100, a qualified part platform 11 and a defective part platform 12, a qualified part slide 21 and a defective part slide 22, a lane change block 23, and a push block 30 are arranged in the depressed structure;
  • a cavity is provided below the work surface, and the air cylinder 31 is installed in the cavity.
  • the circuits, electronic components, liquid channels, and hydraulic components involved in the present invention can all be arranged in the workbench below the workbench, or they may all be arranged at the bottom of the workbench.
  • the qualified parts button 41, the unqualified parts button 42, and the air cylinder button 35 can be arranged at a corner of the work surface.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Automatic Assembly (AREA)

Abstract

一种车间作业台（10），设有合格零件平台（11）和不合格零件平台（12）、合格零件滑道（21）和不合格零件滑道（22）、换道拨块（23）、推块（30）、合格零件按钮（41）和不合格零件按钮（42）；合格零件滑道和不合格零件滑道前后并列设置，换道拨块的一端安装在电机（24）上；合格零件平台设有第一感应元件（13），不合格零件平台设有第二感应元件（14），第一感应元件控制第一电子开关（51）的通断，第二感应元件控制第二电子开关（52）的通断，第一电子开关与合格零件按钮以及电机串接，第二电子开关与不合格零件按钮以及电机串接。只有当工人将合格零件放置在合格零件平台上且按下合格零件按钮后，换道拨块和推块才会动作，尽可能地防止合格零件被错误地流入不合格零件容器，防止不合格零件被流入合格零件容器。

Description

一种车间作业台 技术领域
本发明涉及生产用的设备。
背景技术
车间的作业台，或者说车间的工作台，可以用来检测零件，检测零件的尺寸、形位误差、外观是否存在瑕疵，作业台上放置各种检测用的工具。
工人检测完一个零件，结果可能是合格或不合格。合格的零件被放入第一容器，不合格的零件被放入第二容器。但是，在实际工作中，工人由于长时间在作业台前工作而疲劳，或者由于注意力不集中，会错把合格的零件放入第二容器，把不合格的零件放入第一容器。
发明内容
本发明所解决的技术问题：尽可能地防止工人错误地将合格零件放入不合格零件容器，将不合格零件放入合格零件容器。
为解决上述技术问题，本发明提供如下技术方案：一种车间作业台，设有合格零件平台和不合格零件平台、合格零件滑道和不合格零件滑道、换道拨块、推块、合格零件按钮和不合格零件按钮；合格零件滑道和不合格零件滑道前后并列设置，合格零件平台和不合格零件平台左右并列设置，位于合格零件滑道和不合格零件滑道的上端处，换道拨块的一端安装在电机上，在合格零件滑道和不合格零件滑道之间摆动；推块位于合格零件平台和不合格零件平台的一侧，能够将合格零件平台和不合格零件平台上的零件推入合格零件滑道或不合格零件滑道；合格零件平台设有第一感应元 件，不合格零件平台设有第二感应元件，第一感应元件控制第一电子开关的通断，第二感应元件控制第二电子开关的通断，第一电子开关与合格零件按钮以及电机串接，第二电子开关与不合格零件按钮以及电机串接。
按上述技术方案，工人在作业台上检测零件，将合格的零件放在合格零件平台上，第一感应元件感应，第一电子开关导通，如果工人按下合格零件按钮，则电源通过合格零件按钮和第一电子开关向电机供电，电机驱动换道拨块正向摆动，阻断不合格零件滑道，合格零件滑道畅通，推块将合格零件推动，零件滑入合格零件滑道，沿该滑道滑入合格零件的容器。
工人将不合格的零件放在不合格零件平台上，第二感应元件感应，第二电子开关导通，如果工人按下不合格零件按钮，则电源通过不合格零件按钮和第二电子开关向电机供电，电机驱动换道拨块反向摆动，阻断合格零件滑道，不合格零件滑道畅通，推块将不合格零件推动，零件滑入不合格零件滑道，沿该滑道滑入不合格零件的容器。
上述，工人每次将一个零件(不合格零件或合格零件)放置在合格零件平台或不合格零件平台。
本发明所述技术方案，只有当工人将合格零件放置在合格零件平台上且按下合格零件按钮后，换道拨块和推块才会动作，如果仅将合格零件放置在合格零件平台上而没有按下合格零件按钮，或者，仅按下合格零件按钮而没有将合格零件放置在合格零件平台上，均不能够使电源与电机、推块驱动元件的电路导通，故，电机、推块驱动元件无动作，工人能够马上知晓自己的误操作。
同样的，只有当工人将不合格零件放置在不合格零件平台上且按下不合格零件按钮后，换道拨块和推块才会动作，如果仅将不合格零件放置在 不合格零件平台上而没有按下不合格零件按钮，或者，仅按下不合格零件按钮而没有将不合格零件放置在不合格零件平台上，均不能够使电源与电机、推块驱动元件的电路导通，故，电机、推块驱动元件无动作，工人能够马上知晓自己的误操作。
本发明能够尽可能地防止合格零件被错误地流入不合格零件容器，防止不合格零件被流入合格零件容器。
附图说明
下面结合附图对本发明做进一步的说明：
图1为俯视作业台所得的示意图；
图2为图1中A-A向剖视后的示意图。
图中符号说明：
10、作业台；100、下陷结构；
11、合格零件平台；12、不合格零件平台；13、第一感应元件；14、第二感应元件；
21、合格零件滑道；22、不合格零件滑道；23、换道拨块；24、电机；
30、推块；31、气缸；32、三位两通电磁阀；33、油泵；34、回油容器；35、气缸按钮；
41、合格零件按钮；42、不合格零件按钮；
51、第一电子开关；52、第二电子开关；53、第一电磁开关的电磁铁；54、第一电磁开关的开关装置；55、第二电磁开关的电磁铁；56、第二电磁开关的开关装置；
60、变压器。
具体实施方式
结合图1、图2，一种车间作业台，设有合格零件平台11和不合格零件平台12、合格零件滑道21和不合格零件滑道22、换道拨块23、推块30、合格零件按钮41和不合格零件按钮42。
合格零件滑道和不合格零件滑道前后并列设置，合格零件平台和不合格零件平台左右并列设置，位于合格零件滑道和不合格零件滑道的上端处，换道拨块的一端安装在电机24上，在合格零件滑道和不合格零件滑道之间摆动。
推块30位于合格零件平台和不合格零件平台的一侧，能够将合格零件平台和不合格零件平台上的零件推入合格零件滑道或不合格零件滑道。具体地，合格零件滑道和不合格零件滑道设有一公共区域，从合格零件平台、不合格零件平台下滑的零件首先经过该公共区域后，再进入合格零件滑道或不合格零件滑道，具体由推块30控制。
合格零件平台设有第一感应元件13，不合格零件平台设有第二感应元件14，第一感应元件控制第一电子开关51的通断，第二感应元件控制第二电子开关52的通断，第一电子开关与合格零件按钮以及电机串接，第二电子开关与不合格零件按钮以及电机串接。其中，合格零件按钮、不合格零件按钮均与电源连接。
工人在作业台上检测零件，将合格的零件放在合格零件平台11上，第一感应元件13感应，第一电子开关51导通，如果工人按下合格零件按钮41，则电源通过合格零件按钮41和第一电子开关51向电机24供电，电机驱动换道拨块23正向摆动，阻断不合格零件滑道22，合格零件滑道21畅通，推块30将合格零件推动，零件滑入合格零件滑道，沿该滑道滑入合格 零件的容器。
工人将不合格的零件放在不合格零件平台12上，第二感应元件14感应，第二电子开关52导通，如果工人按下不合格零件按钮42，则电源通过不合格零件按钮和第二电子开关向电机24供电，电机驱动换道拨块23反向摆动，阻断合格零件滑道21，不合格零件滑道畅通，推块30将不合格零件推动，零件滑入不合格零件滑道，沿该滑道滑入不合格零件的容器。
第一电子开关51与第一电磁开关连接，第一电磁开关的电磁铁53与第一电子开关串接，第一电磁开关的开关装置54与第二电子开关52串接；第二电子开关与第二电磁开关连接，第二电磁开关的电磁铁55与第二电子开关串接，第二电磁开关的开关装置56与第一电子开关串接；第一电磁开关的开关装置和第二电磁开关的开关装置均为常闭开关，第一电磁开关的开关装置的旁侧和第二电磁开关的开关装置的旁侧均设有接地触点，在第一电磁开关的电磁铁的吸附下，第一电磁开关的开关装置能够与接地触点接触，在第二电磁开关的电磁铁的吸附下，第二电磁开关的开关装置能够与接地触点接触。
在第一电子开关51导通，且合格零件按钮41按下的情况下，第一电磁开关的电磁铁53得电而吸附第一电磁开关的开关装置54，第一电磁开关的开关装置与接地触点接触，如此，电机的负极接地，电流方向为：电源-合格零件按钮41-第一电子开关51-第一电磁开关的电磁铁53-第二电磁开关的开关装置56-电机正极-电机负极-第一电磁开关的开关装置54-接地。如此，电机正转，驱动换道拨块23正向摆动。
在第二电子开关52导通，且不合格零件按钮42按下的情况下，第二电磁开关的电磁铁55得电而吸附第二电磁开关的开关装置56，第二电磁 开关的开关装置与接地触点接触，如此，电机的正极接地，电流方向为：电源-不合格零件按钮42-第二电子开关52-第二电磁开关的电磁铁55-第一电磁开关的开关装置54-电机负极-电机正极-第二电磁开关的开关装置56-接地。如此，电机反转，驱动换道拨块23反向摆动。
第一电子开关51为第一晶体管，第一感应元件13为第一压电元件，第一感应元件与第一电子开关的基极连接；第二电子开关52为第二晶体管，第二感应元件14为第二压电元件，第二感应元件与第二电子开关的基极连接。零件放置在合格零件平台11上，第一感应元件13受压而产生电荷，该电荷直接使第一电子开关导通或者通过放大电路后使第一电子开关导通。零件放置在不合格零件平台12上，第二感应元件14受压而产生电荷，该电荷直接使第二电子开关导通或者通过放大电路后使第二电子开关导通。
推块30安装在气缸31的活塞杆上，气缸的左腔室、右腔室与三位两通电磁阀32连接，三位两通电磁阀与油泵33、回油容器34连接；第一电子开关51和第二电子开关52均与三位两通电磁阀的一端连接，三位两通电磁阀的另一端与气缸按钮35连接。
在第一电子开关51导通，且合格零件按钮41按下的情况下，三位两通电磁阀的一端得电，油泵也得电，电流方向为：电源-合格零件按钮41-第一电子开关51-三位两通电磁阀32的一端得电，同时，油泵33得电。如此，油泵工作，油液向气缸的右腔室供给，活塞左移，驱动推块30左移，推块推动合格零件平台11或不合格零件平台12上的零件滑入相应的滑道。
在第二电子开关52导通，且不合格零件按钮42按下的情况下，三位两通电磁阀的一端得电，油泵也得电，电流方向为：电源-不合格零件按钮 42-第二电子开关52-三位两通电磁阀32的一端得电，同时，油泵33得电。如此，油泵工作，油液向气缸的右腔室供给，活塞左移，驱动推块30左移，推块推动合格零件平台11或不合格零件平台12上的零件滑入相应的滑道。
气缸31需要复位时，按下所述气缸按钮35，电源同时向三位两通电磁阀32的另一端和油泵33供电，油泵向气缸的左腔室供油，活塞右移，推块30右移复位。
作业台设有变压器60，变压器与车间的交流电连接，交流电通过变压器向电机24、三位两通电磁阀32和油泵33供电。
作业台的一侧设有下陷结构100，合格零件平台11和不合格零件平台12、合格零件滑道21和不合格零件滑道22、换道拨块23、推块30设置在下陷结构中；作业台面的下方设有空腔，气缸31安装在该空腔中。
本发明所涉及的电路和电子元件、液体通道和液压元件均可以设置在作业台中位于台面的下方，或者，均设置在作业台的底部。合格零件按钮41、不合格零件按钮42、气缸按钮35可以设置在作业台面上的一角处。
以上内容仅为本发明的较佳实施方式，对于本领域的普通技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，本说明书内容不应理解为对本发明的限制。

Claims (6)

  1. 一种车间作业台，设有合格零件平台(11)和不合格零件平台(12)、合格零件滑道(21)和不合格零件滑道(22)、换道拨块(23)、推块(30)、合格零件按钮(41)和不合格零件按钮(42)；
    合格零件滑道和不合格零件滑道前后并列设置，合格零件平台和不合格零件平台左右并列设置，位于合格零件滑道和不合格零件滑道的上端处，换道拨块的一端安装在电机(24)上，在合格零件滑道和不合格零件滑道之间摆动；
    推块(30)位于合格零件平台和不合格零件平台的一侧，能够将合格零件平台和不合格零件平台上的零件推入合格零件滑道或不合格零件滑道；其特征在于：
    合格零件平台设有第一感应元件(13)，不合格零件平台设有第二感应元件(14)，第一感应元件控制第一电子开关(51)的通断，第二感应元件控制第二电子开关(52)的通断，第一电子开关与合格零件按钮以及电机串接，第二电子开关与不合格零件按钮以及电机串接。
  2. 如权利要求1所述的作业台，其特征在于：第一电子开关(51)与第一电磁开关连接，第一电磁开关的电磁铁(53)与第一电子开关串接，第一电磁开关的开关装置(54)与第二电子开关(52)串接；第二电子开关与第二电磁开关连接，第二电磁开关的电磁铁(55)与第二电子开关串接，第二电磁开关的开关装置(56)与第一电子开关串接；第一电磁开关的开关装置和第二电磁开关的开关装置均为常闭开关，第一电磁开关的开关装置的旁侧和第二电磁开关的开关装置的旁侧均设有接地触点，在第一 电磁开关的电磁铁的吸附下，第一电磁开关的开关装置能够与接地触点接触，在第二电磁开关的电磁铁的吸附下，第二电磁开关的开关装置能够与接地触点接触。
  3. 如权利要求1所述的作业台，其特征在于：第一电子开关(51)为第一晶体管，第一感应元件(13)为第一压电元件，第一感应元件与第一电子开关的基极连接；第二电子开关(52)为第二晶体管，第二感应元件(14)为第二压电元件，第二感应元件与第二电子开关的基极连接。
  4. 如权利要求1所述的作业台，其特征在于：推块(30)安装在气缸(31)的活塞杆上，气缸的左腔室、右腔室与三位两通电磁阀(32)连接，三位两通电磁阀与油泵(33)、回油容器(34)连接；第一电子开关(51)和第二电子开关(52)均与三位两通电磁阀的一端连接，三位两通电磁阀的另一端与气缸按钮(35)连接。
  5. 如权利要求4所述的作业台，其特征在于：作业台设有变压器(60)，变压器与车间的交流电连接，交流电通过变压器向电机(24)、三位两通电磁阀(32)和油泵(33)供电。
  6. 如权利要求4所述的作业台，其特征在于：作业台的一侧设有下陷结构(100)，合格零件平台(11)和不合格零件平台(12)、合格零件滑道(21)和不合格零件滑道(22)、换道拨块(23)、推块(30)设置在下陷结构中；作业台面的下方设有空腔，气缸(31)安装在该空腔中。
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