CN115165549B - Magnetic material strength detection device - Google Patents
Magnetic material strength detection device Download PDFInfo
- Publication number
- CN115165549B CN115165549B CN202211086452.7A CN202211086452A CN115165549B CN 115165549 B CN115165549 B CN 115165549B CN 202211086452 A CN202211086452 A CN 202211086452A CN 115165549 B CN115165549 B CN 115165549B
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- fixedly connected
- rod
- threaded rod
- detection box
- negative pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
Abstract
The invention discloses a magnetic material strength detection device, which relates to the field of magnetic material strength detection and comprises a detection box, wherein the top of the detection box is fixedly connected with a cover plate mechanism; the detection mechanism and the placing ring are fixedly connected in the detection box; the detection box is fixedly connected with the motor; an output shaft of the motor is fixedly connected with a first threaded rod; the first threaded rod is provided with a negative pressure mechanism and a transmission mechanism; the detection box is fixedly connected with the clamping plate mechanism; an elastic connecting rod mechanism is fixedly connected between the clamping plate mechanism and the transmission mechanism; the transmission mechanism is fixedly connected with the synchronizing mechanism, the cover plate mechanism is arranged, so that the condition that workpieces are pressed to crack and splash out of the detection box in the strength detection process can be avoided, the workpieces can be sucked and fixed tightly through the negative pressure mechanism, meanwhile, broken workpieces can be absorbed and stored when the workpieces are pressed and broken, the transmission mechanism can drive the elastic connecting rod mechanism, the clamping plate mechanism is further driven, the workpieces are clamped, and the strength detection efficiency of magnetic materials is improved.
Description
Technical Field
The invention relates to the field of magnetic material strength detection, in particular to a magnetic material strength detection device.
Background
Materials that are capable of reacting in some way to a magnetic field are referred to as magnetic materials. Substances can be classified into diamagnetic substances, paramagnetic substances, ferromagnetic substances, antiferromagnetic substances, and ferrimagnetic substances according to the strength of magnetism exhibited by the substances in an external magnetic field. The shadow of magnetic material is available on the common electronic products.
In the prior art, a workpiece to be detected is usually fixed on a detection table to be detected, and then a hydraulic cylinder drives a pressure head to detect the strength of a magnetic material, but the prior art cannot adaptively clamp the workpiece, cannot collect the damaged workpiece, and cannot prevent sputtering of the workpiece, so that the prior art has a large improvement space.
Disclosure of Invention
The invention provides a magnetic material strength detection device, which solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the magnetic material strength detection device comprises a detection box, wherein the top of the detection box is fixedly connected with a cover plate mechanism; the detection mechanism and the placing ring are fixedly connected in the detection box; the detection box is fixedly connected with the motor; an output shaft of the motor is fixedly connected with a first threaded rod; the first threaded rod is provided with a negative pressure mechanism and a transmission mechanism and is used for driving the negative pressure mechanism and the transmission mechanism; the detection box is fixedly connected with the clamping plate mechanism; an elastic connecting rod mechanism is fixedly connected between the clamping plate mechanism and the transmission mechanism, the transmission mechanism is used for driving the elastic connecting rod mechanism, the elastic connecting rod mechanism is used for driving the clamping plate mechanism, and the clamping plate mechanism is used for clamping a workpiece; the transmission mechanism is fixedly connected with the synchronizing mechanism, and the synchronizing mechanism is used for driving the cover plate mechanism to open and close.
As a preferred technical scheme of the invention, the cover plate mechanism comprises a cover plate rotating seat fixed on the detection box, the cover plate rotating seat is rotatably connected with a cover plate, and the cover plate is made of transparent materials.
As a preferable technical scheme, the detection mechanism comprises a mounting frame fixed in the detection box, the mounting frame is fixedly connected with a hydraulic push rod, the hydraulic push rod is fixedly connected with a pressure sensor, and the pressure sensor is fixedly connected with a pressing block.
As a preferred technical scheme of the present invention, the negative pressure mechanism includes a threaded sleeve in threaded connection with the first threaded rod, the threaded sleeve is fixedly connected with a negative pressure cover, the negative pressure cover is in sliding connection with a placing ring, the negative pressure cover is provided with an electromagnetic valve, the negative pressure cover is provided with a fixture block, and the placing ring is provided with a fixture block groove corresponding to the fixture block.
As a preferable technical scheme of the invention, the transmission mechanism comprises a first bevel gear fixed on a first threaded rod, the first bevel gear is meshed with a second bevel gear, the second bevel gear is fixedly connected with a second threaded rod, the second threaded rod is rotatably connected with a placing ring, the second threaded rod is fixedly connected with a third bevel gear, and the third bevel gear is meshed with a fourth bevel gear.
As a preferred technical scheme of the invention, the clamping plate mechanism comprises a fixed plate fixed in the detection box, the fixed plate is connected with a sliding rod in a sliding manner, and the sliding rod is fixedly connected with the clamping plate.
As a preferred technical scheme of the invention, the elastic connecting rod mechanism comprises a moving block in threaded connection with the second threaded rod, the moving block is fixedly connected with a first rotating seat, the first rotating seat is rotatably connected with an elastic sleeve, a spring is fixedly connected in the elastic sleeve, the spring is fixedly connected with a sliding block, the sliding block is in sliding connection with the elastic sleeve, the sliding block is fixedly connected with a connecting rod, the connecting rod is rotatably connected with a second rotating seat, and the second rotating seat is fixedly connected with the sliding rod.
As a preferred technical scheme of the invention, the synchronizing mechanism comprises a third threaded rod fixedly connected with a fourth bevel gear, the third threaded rod is rotatably connected with the detection box, the third threaded rod is rotatably connected with a rod body fixing seat, the rod body fixing seat is fixedly connected with the detection box, the third threaded rod is in threaded connection with a synchronizing block, the synchronizing block is fixedly connected with a third rotating seat, the third rotating seat is rotatably connected with a synchronizing rod, the synchronizing rod is rotatably connected with a fourth rotating seat, and the fourth rotating seat is fixedly connected with the cover plate.
The invention has the following advantages: according to the invention, the cover plate mechanism is arranged, so that the situation that a workpiece is cracked under pressure and splashed out of the detection box in the strength detection process can be avoided, the workpiece can be sucked and fixed under negative pressure through the negative pressure mechanism, meanwhile, the crushed workpiece can be absorbed and stored when the workpiece is crushed under pressure, the elastic connecting rod mechanism can be driven through the transmission mechanism, the clamping plate mechanism is further driven, the workpiece is clamped, the cover plate mechanism can be driven while clamping is carried out through the synchronization mechanism, the sealing of the detection box is realized, the operator is protected, and the strength detection efficiency of the magnetic material is improved.
Drawings
Fig. 1 is a schematic structural diagram of a magnetic material strength detection device.
Fig. 2 is a partially enlarged view of the area a in fig. 1.
Fig. 3 is a schematic structural diagram of a negative pressure cover in the magnetic material strength detection device.
In the figure: 1. a detection box; 2. a cover plate mechanism; 201. a cover plate rotating seat; 202. a cover plate; 3. a detection mechanism; 301. a mounting frame; 302. a hydraulic push rod; 303. a pressure sensor; 304. pressing into blocks; 4. placing a ring; 5. a motor; 6. a first threaded rod; 7. a negative pressure mechanism; 701. a threaded sleeve; 702. a negative pressure cover; 703. an electromagnetic valve; 8. a transmission mechanism; 801. a first bevel gear; 802. a second bevel gear; 803. a second threaded rod; 804. a third bevel gear; 805. a fourth bevel gear; 9. a clamping plate mechanism; 901. a fixing plate; 902. a slide bar; 903. a clamping plate; 10. an elastic connecting rod mechanism; 1001. a moving block; 1002. a first rotating base; 1003. an elastic sleeve; 1004. a spring; 1005. a slider; 1006. a connecting rod; 1007. a second rotating base; 11. a synchronization mechanism; 1101. a third threaded rod; 1102. a rod body fixing seat; 1103. a synchronization block; 1104. a third rotating base; 1105. a synchronization lever; 1106. and a fourth rotating seat.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1
Referring to fig. 1-3, a magnetic material strength detection device includes a detection box 1, wherein a cover plate mechanism 2 is fixedly connected to the top of the detection box 1; a detection mechanism 3 and a placing ring 4 are fixedly connected in the detection box 1; the detection box 1 is fixedly connected with a motor 5; an output shaft of the motor 5 is fixedly connected with a first threaded rod 6; the first threaded rod 6 is provided with a negative pressure mechanism 7 and a transmission mechanism 8, and the first threaded rod 6 is used for driving the negative pressure mechanism 7 and the transmission mechanism 8; the detection box 1 is fixedly connected with a clamping plate mechanism 9; an elastic connecting rod mechanism 10 is fixedly connected between the clamping plate mechanism 9 and the transmission mechanism 8, the transmission mechanism 8 is used for driving the elastic connecting rod mechanism 10, the elastic connecting rod mechanism 10 is used for driving the clamping plate mechanism 9, and the clamping plate mechanism 9 is used for clamping a workpiece; the transmission mechanism 8 is fixedly connected with a synchronizing mechanism 11, and the synchronizing mechanism 11 is used for driving the cover plate mechanism 2 to open and close.
The cover plate mechanism 2 comprises a cover plate rotating seat 201 fixed on the detection box 1, the cover plate rotating seat 201 is rotatably connected with a cover plate 202, and the cover plate 202 is made of transparent materials.
The detection mechanism 3 comprises a mounting frame 301 fixed in the detection box 1, the mounting frame 301 is fixedly connected with a hydraulic push rod 302, the hydraulic push rod 302 is fixedly connected with a pressure sensor 303, and the pressure sensor 303 is fixedly connected with a pressing block 304.
The transmission mechanism 8 comprises a first bevel gear 801 fixed on the first threaded rod 6, the first bevel gear 801 is meshed with a second bevel gear 802, the second bevel gear 802 is fixedly connected with a second threaded rod 803, the second threaded rod 803 is rotatably connected with the placing ring 4, the second threaded rod 803 is fixedly connected with a third bevel gear 804, and the third bevel gear 804 is meshed with a fourth bevel gear 805. The clamping plate mechanism 9 comprises a fixing plate 901 fixed in the detection box 1, the fixing plate 901 is connected with a sliding rod 902 in a sliding manner, and the sliding rod 902 is fixedly connected with a clamping plate 903. The elastic connecting rod mechanism 10 comprises a moving block 1001 in threaded connection with a second threaded rod 803, the moving block 1001 is fixedly connected with a first rotating seat 1002, the first rotating seat 1002 is rotatably connected with an elastic sleeve 1003, a spring 1004 is fixedly connected in the elastic sleeve 1003, a slider 1005 is fixedly connected with the spring 1004, the slider 1005 is slidably connected with the elastic sleeve 1003, a connecting rod 1006 is fixedly connected with the slider 1005, the connecting rod 1006 is rotatably connected with a second rotating seat 1007, and the second rotating seat 1007 is fixedly connected with a sliding rod 902. The synchronizing mechanism 11 comprises a third threaded rod 1101 fixedly connected with a fourth bevel gear 805, the third threaded rod 1101 is rotatably connected with the detection box 1, the third threaded rod 1101 is rotatably connected with a rod body fixing seat 1102, the rod body fixing seat 1102 is fixedly connected with the detection box 1, the third threaded rod 1101 is rotatably connected with a synchronizing block 1103, the synchronizing block 1103 is fixedly connected with a third rotating seat 1104, the third rotating seat 1104 is rotatably connected with a synchronizing rod 1105, the synchronizing rod 1105 is rotatably connected with a fourth rotating seat 1106, and the fourth rotating seat 1106 is fixedly connected with the cover plate 202.
Specifically, the motor 5 is turned on, the output shaft of the motor 5 rotates to drive the first threaded rod 6 to rotate, and then drives the first bevel gear 801 to rotate, thereby driving the second bevel gear 802 to rotate, the second bevel gear 802 rotates to drive the second threaded rod 803 to rotate, thereby realizing the rotation of the third bevel gear 804, thereby driving the fourth bevel gear 805 to rotate, the second threaded rod 803 rotates to drive the moving block 1001 to move, under the driving of the elastic sleeve 1003 and the connecting rod 1006, the moving of the sliding rod 902 and the clamping plate 903 is realized, the clamping and fixing of the workpiece is realized through the clamping plate 903, when the workpiece cannot be pressed continuously, the spring 1004 is compressed at the moment, the sliding block 1005 and the elastic sleeve 1003 slide relatively, thereby realizing the elastic pressing, in addition, the rotation of the fourth bevel gear 805 can drive the third threaded rod 1101 to rotate, thereby realizing the moving of the synchronizing block 1103, under the driving of the synchronizing rod 1105, so as to realize the rotation of the cover plate 202 around the cover plate rotating base 201, and realize the sealing of the detection box 1.
Example 2
Referring to fig. 1 to fig. 3, the other contents of the present embodiment are the same as those of embodiment 1, except that: the negative pressure mechanism 7 comprises a threaded sleeve 701 in threaded connection with the first threaded rod 6, the threaded sleeve 701 is fixedly connected with a negative pressure cover 702, the negative pressure cover 702 is in sliding connection with the placing ring 4, an electromagnetic valve 703 is arranged on the negative pressure cover 702, a clamping block is arranged on the negative pressure cover 702, and a clamping block groove corresponding to the clamping block is arranged in the placing ring 4.
Specifically, the first threaded rod 6 rotates to drive the threaded sleeve 701 to descend, so as to drive the negative pressure cover 702 to descend, and at the moment, because the magnetic material is attached to the placing ring 4, negative pressure is generated below the magnetic material, so that the magnetic material is closely attached to the placing ring 4, and the electromagnetic valve 703 can control the pressure in the balanced negative pressure cover 702.
In the implementation process of the invention, firstly, a magnetic separation material workpiece to be detected is placed on the placing ring 4, at the moment, the motor 5 is started, the output shaft of the motor 5 rotates to drive the first threaded rod 6 to rotate, the first threaded rod 6 rotates to drive the negative pressure mechanism 7 and the transmission mechanism 8 to work, the negative pressure mechanism 7 tightly attracts the workpiece on the placing ring 4, the transmission mechanism 8 drives the elastic connecting rod mechanism 10 to work, the clamping plate mechanism 9 moves under the drive of the elastic connecting rod mechanism 10 to complete the clamping of the workpiece, at the moment, the transmission mechanism 8 drives the synchronization mechanism 11, the cover plate mechanism 2 is closed under the drive of the synchronization mechanism 11, after the closing is completed, the detection mechanism 3 is started at the moment to realize the strength detection of the magnetic material workpiece, such as the damage of the magnetic material, and the magnetic material falls on the negative pressure mechanism 7.
According to the invention, the cover plate mechanism 2 is arranged to prevent a workpiece from being cracked and splashed out of the detection box 1 when being pressed in the strength detection process, the workpiece can be sucked and fixed under negative pressure through the negative pressure mechanism 7, meanwhile, a crushed workpiece can be absorbed and stored when being pressed and crushed, the elastic connecting rod mechanism 10 can be driven through the transmission mechanism 8, the clamping plate mechanism 9 is further driven, the workpiece clamping is realized, the cover plate mechanism 2 can be driven while being clamped through the synchronization mechanism 11, the detection box 1 is sealed, operators are protected, and the strength detection efficiency of the magnetic material is improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The magnetic material strength detection device comprises a detection box, and is characterized in that the top of the detection box is fixedly connected with a cover plate mechanism;
the detection mechanism and the placing ring are fixedly connected in the detection box;
the detection box is fixedly connected with the motor;
an output shaft of the motor is fixedly connected with a first threaded rod;
the first threaded rod is provided with a negative pressure mechanism and a transmission mechanism and is used for driving the negative pressure mechanism and the transmission mechanism;
the detection box is fixedly connected with the clamping plate mechanism;
an elastic connecting rod mechanism is fixedly connected between the clamping plate mechanism and the transmission mechanism, the transmission mechanism is used for driving the elastic connecting rod mechanism, the elastic connecting rod mechanism is used for driving the clamping plate mechanism, and the clamping plate mechanism is used for clamping a workpiece;
the transmission mechanism is fixedly connected with a synchronous mechanism, and the synchronous mechanism is used for driving the plate covering mechanism to open and close;
the negative pressure mechanism comprises a threaded sleeve in threaded connection with the first threaded rod, the threaded sleeve is fixedly connected with a negative pressure cover, the negative pressure cover is in sliding connection with a placing ring, an electromagnetic valve is arranged on the negative pressure cover, a clamping block is arranged on the negative pressure cover, and a clamping block groove corresponding to the clamping block is formed in the placing ring;
the transmission mechanism comprises a first bevel gear fixed on the first threaded rod, the first bevel gear is meshed with a second bevel gear, the second bevel gear is fixedly connected with a second threaded rod, the second threaded rod is rotatably connected with the placing ring, the second threaded rod is fixedly connected with a third bevel gear, and the third bevel gear is meshed with a fourth bevel gear;
the clamping plate mechanism comprises a fixed plate fixed in the detection box, the fixed plate is connected with a sliding rod in a sliding manner, and the sliding rod is fixedly connected with the clamping plate;
the elastic connecting rod mechanism comprises a moving block in threaded connection with the second threaded rod, the moving block is fixedly connected with a first rotating seat, the first rotating seat is rotatably connected with an elastic sleeve, a spring is fixedly connected in the elastic sleeve, the spring is fixedly connected with a sliding block, the sliding block is in sliding connection with the elastic sleeve, the sliding block is fixedly connected with a connecting rod, the connecting rod is rotatably connected with a second rotating seat, and the second rotating seat is fixedly connected with the sliding rod;
the synchronizing mechanism comprises a third threaded rod fixedly connected with a fourth bevel gear, the third threaded rod is rotatably connected with the detection box, the third threaded rod is rotatably connected with the rod body fixing seat, the rod body fixing seat is fixedly connected with the detection box, the third threaded rod is in threaded connection with a synchronizing block, the synchronizing block is fixedly connected with a third rotating seat, the third rotating seat is rotatably connected with a synchronizing rod, the synchronizing rod is rotatably connected with a fourth rotating seat, and the fourth rotating seat is fixedly connected with the cover plate.
2. The apparatus for testing strength of magnetic material according to claim 1, wherein the cover mechanism comprises a cover rotating base fixed on the testing box, the cover rotating base is rotatably connected with the cover, and the cover is made of transparent material.
3. The apparatus according to claim 1, wherein the detecting mechanism includes a mounting frame fixed in the detecting box, the mounting frame is fixedly connected to the hydraulic push rod, the hydraulic push rod is fixedly connected to the pressure sensor, and the pressure sensor is fixedly connected to the pressing block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211086452.7A CN115165549B (en) | 2022-09-07 | 2022-09-07 | Magnetic material strength detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211086452.7A CN115165549B (en) | 2022-09-07 | 2022-09-07 | Magnetic material strength detection device |
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| CN115165549A CN115165549A (en) | 2022-10-11 |
| CN115165549B true CN115165549B (en) | 2022-12-16 |
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| CN202211086452.7A Active CN115165549B (en) | 2022-09-07 | 2022-09-07 | Magnetic material strength detection device |
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| CN116159915B (en) * | 2023-04-25 | 2023-07-04 | 山东兴恒环境科技集团有限公司 | Stamping equipment for central air conditioner outer shell of farm |
| CN116773361B (en) * | 2023-08-25 | 2023-11-07 | 菏泽市瑞祺医疗器械有限公司 | Pressure-resistant testing device for wheelchair frame |
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| CN114562972A (en) * | 2022-04-28 | 2022-05-31 | 深圳市奕然电子科技有限公司 | Thickness detection device for circuit board paster |
| CN114704738A (en) * | 2022-03-09 | 2022-07-05 | 河南应用技术职业学院 | Sensor fixing device for computer network science and technology |
| CN217224540U (en) * | 2021-12-27 | 2022-08-19 | 上海协昌霍宁实业发展有限公司 | Multi-directional synchronous positioning fixture for machining middle shell of turbocharger of fuel automobile |
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| US5127692A (en) * | 1987-10-20 | 1992-07-07 | Canon Kabushiki Kaisha | Article gripping apparatus |
| CN209878498U (en) * | 2019-05-08 | 2019-12-31 | 沭阳元恒建材有限公司 | Building material resistance to compression testing arrangement convenient to it is fixed |
| CN212721931U (en) * | 2020-09-21 | 2021-03-16 | 天津卓兴宜科技发展有限公司 | Air tightness detection device for manufacturing special equipment |
| CN112849722A (en) * | 2021-01-11 | 2021-05-28 | 广州小兔科技有限公司 | Intelligent storage box suitable for electronic commerce |
| CN113484238A (en) * | 2021-07-09 | 2021-10-08 | 王慧婷 | Bonding strength tester for processing recycled concrete |
| CN216900007U (en) * | 2022-03-01 | 2022-07-05 | 泰州市宝馨精密铸造有限公司 | Metal product detection device with adjustable clamping function |
| CN217304620U (en) * | 2022-03-02 | 2022-08-26 | 莒县金力环保建材有限公司 | Concrete test block compressive strength detects uses anchor clamps |
| CN114720050B (en) * | 2022-06-01 | 2022-09-02 | 深圳市伟烽恒科技有限公司 | A precision measurement device for sensor processing |
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| CN217224540U (en) * | 2021-12-27 | 2022-08-19 | 上海协昌霍宁实业发展有限公司 | Multi-directional synchronous positioning fixture for machining middle shell of turbocharger of fuel automobile |
| CN114704738A (en) * | 2022-03-09 | 2022-07-05 | 河南应用技术职业学院 | Sensor fixing device for computer network science and technology |
| CN114562972A (en) * | 2022-04-28 | 2022-05-31 | 深圳市奕然电子科技有限公司 | Thickness detection device for circuit board paster |
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