CN115448025A

CN115448025A - Material feeding mechanism

Info

Publication number: CN115448025A
Application number: CN202211229560.5A
Authority: CN
Inventors: 杨柳明; 陈东华; 左金; 吴宏洋; 黄思学
Original assignee: Shenzhen Zhongzhi Automation Equipment Co ltd
Current assignee: Shenzhen Zhongzhi Automation Equipment Co ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2022-12-09

Abstract

The application relates to a material feeding mechanism, which comprises a workbench, a transfer platform and a test fixture, wherein the transfer platform and the test fixture are both arranged on the workbench, a positioning assembly is arranged on the transfer platform and used for acquiring material characteristics on the transfer platform and calculating the position distance and the angle deviation between the material and the test fixture; the transfer platform is provided with a first driving assembly, a second driving assembly and a third driving assembly, the first driving assembly and the second driving assembly are arranged in the same plane, the driving direction of the first driving assembly is perpendicular to the driving direction of the second driving assembly, and the third driving assembly is vertically arranged on the second driving assembly; and a stepping motor is arranged on the third driving assembly, a vacuum chuck is arranged on an output shaft of the stepping motor, and the stepping motor can drive the vacuum chuck to rotate according to the angle deviation data. This application has the location that makes the test equipment material loading more accurate, promotes test equipment's material loading efficiency's effect.

Description

Material feeding mechanism

Technical Field

The application relates to the technical field of machining, in particular to a material feeding mechanism.

Background

With the development of science and technology, more and more test equipment uses automatic feed mechanism to carry out the material loading. In test equipment, carry out automatic feeding through the manipulator, compare in artifical material loading, can improve material loading efficiency, improve test equipment's efficiency of software testing.

In the related art, when a test is performed on a test device, materials are required to be loaded into a mounting groove of a test fixture from a raw material box or a previous station, and the materials are generally carried by a common manipulator, and the common manipulator can translate the materials on one platform to another platform according to a predetermined track.

According to the related technology, when a product is transferred to another platform from one platform by a common manipulator, the product can only be transferred according to a set track, in the actual transfer process, due to interference factors such as mechanical vibration of test equipment, the manipulator is easy to deviate, so that positioning deviation is generated, the material cannot be accurately transferred to a jig of a test station, the test equipment needs to be stopped to correct and position, and the problems that the feeding positioning is not accurate enough and the feeding efficiency is not high enough exist.

Disclosure of Invention

In order to make the location of test equipment material loading more accurate, promote test equipment's material loading efficiency, this application provides material feeding mechanism.

The application provides a material feed mechanism adopts following technical scheme:

the material feeding mechanism comprises a workbench, a transfer platform and a test fixture, wherein the transfer platform and the test fixture are arranged on the workbench, the transfer platform is used for bearing a material to be transferred, the test fixture is used for clamping the material to be tested, a positioning assembly is arranged on the transfer platform and used for acquiring the material characteristics on the transfer platform and calculating the position distance and the angle deviation between the material and the test fixture; the transfer platform is provided with a first driving assembly, a second driving assembly and a third driving assembly, the first driving assembly and the second driving assembly are arranged in the same plane, the driving direction of the first driving assembly is perpendicular to the driving direction of the second driving assembly, and the third driving assembly is vertically arranged on the second driving assembly; the third driving assembly is provided with a stepping motor, an output shaft of the stepping motor faces the workbench, a vacuum chuck is arranged on the output shaft of the stepping motor and used for grabbing materials, and the stepping motor can drive the vacuum chuck to rotate according to angle deviation data.

Through adopting above-mentioned technical scheme, when needing to give the test equipment material loading, locating component acquires the material characteristic of treating the transportation on the transfer platform, and calculate position distance and the angular deviation between material and the test fixture, first drive assembly and second drive assembly can drive third drive assembly at workstation in-plane translation, third driving piece drive step motor is at vertical migration, step motor drives vacuum chuck and snatchs the material, and through first drive assembly, second drive assembly and third drive assembly linkage transport vacuum chuck to the test fixture directly over, step motor drives the output shaft according to the angular deviation data drive of calculation and rotates, the compensation angular deviation is revised, adjust the material position that vacuum chuck snatchs, make vacuum chuck can be with the material just putting in the test fixture, thereby make the location of test equipment material loading more accurate, and then promote test equipment's material loading efficiency.

The locating component includes first mounting panel, first vision camera, second mounting panel, second vision camera and coaxial light source, the vertical fixed set up in the transfer platform is last, the vertical slip of second mounting panel set up in on the transfer platform, first vision camera set up in a side of first mounting panel, second vision camera set up in a side of second mounting panel, first vision camera with the camera lens of second vision camera all moves towards the transfer platform, coaxial light source set up in first mounting panel is kept away from the one end of transfer platform.

Through adopting above-mentioned technical scheme, when material characteristics were acquireed to needs, the interval of adjustment first mounting panel and second mounting panel can make first vision camera and second vision camera reach suitable position, and first vision camera and second vision camera are shot the material on the transfer platform to can acquire material characteristics, coaxial light source can carry out the light filling to the environment, can further make material characteristics more clear.

Keep away from by the first mounting panel the one side of first vision camera is provided with the fixing base, one side of fixing base is provided with accommodate motor, be provided with first lead screw on accommodate motor's the output shaft, the cover is equipped with the slide on the first lead screw, the second mounting panel is kept away from the one side fixed connection of second vision camera in one side of slide.

Through adopting above-mentioned technical scheme, when the alignment field of vision is adjusted to needs, the first lead screw of accommodate motor drive rotates, can make the second mounting panel be close to or keep away from the fixing base, adjusts the interval of first mounting panel and second mounting panel to the field of vision scope of adjusting first vision camera and second vision camera, and then make the alignment field of vision can satisfy the demand of different quantity materials.

The side of first mounting panel with the second mounting panel all is provided with a plurality of mounting holes, the mounting hole is used for fixed connection first vision camera with the second vision camera.

Through adopting above-mentioned technical scheme, when first vision camera and second vision camera height need be adjusted, with first vision camera to mounting hole and fixed connection on lieing in first mounting panel, with second vision camera to mounting hole and fixed connection on lieing in the second mounting panel, through the mounting hole of counterpointing, can install first vision camera and second vision camera at different heights to can make the field of vision scope of first vision camera and second vision camera, and then make the material characteristic of acquireing more clear.

First drive assembly includes brace table, first guide rail and first slip table, the brace table set up in on the workstation, first guide rail set up in the brace table is kept away from the one side of workstation, first slip table sliding connection in first guide rail.

Through adopting above-mentioned technical scheme, when the material need be translated, can increase the height of first guide rail through the brace table, first slip table sliding connection is in first guide rail to can drive the length direction removal of material along first guide rail.

The second drive assembly comprises a second guide rail and a second sliding table, one end of the second guide rail is arranged on the first sliding table, the length direction of the second guide rail is perpendicular to the length direction of the first guide rail, and the second sliding table is connected with the second guide rail in a sliding mode.

Through adopting above-mentioned technical scheme, when the material that needs the translation, second slip table sliding connection is in the second guide rail, the first guide rail of second guide rail perpendicular to, and the second guide rail moves along the length direction of first guide rail along with first slip table to can drive the material translation in the plane of first guide rail and second guide rail.

The third drive assembly comprises a second lead screw and a third sliding table, the second lead screw is vertically arranged on the second sliding table and is far away from one face of the second guide rail, the length direction of the second lead screw is perpendicular to the plane of the workbench, the third sliding table is sleeved on the peripheral side of the second lead screw, and the stepping motor is arranged on the third sliding table.

Through adopting above-mentioned technical scheme, when needs vertical removal material, the motion of second lead screw drive third slip table can drive third slip table and move in the planar direction of perpendicular to workstation to drive step motor is in vertical operation, and then can make the material move in vertical direction.

The third sliding table is provided with a positioning camera, a lens of the positioning camera faces the workbench, and the test fixture is provided with a positioning hole.

By adopting the technical scheme, when the test fixture is required to be positioned, the positioning camera captures the information of the positioning holes in the test fixture, and the third sliding table can be used for positioning the test fixture, so that the position offset of the material can be corrected, the material can be moved right above the test fixture, and the feeding and positioning of the test equipment are more accurate.

The vacuum detection switch is arranged on the supporting table and connected with the vacuum chuck, and the vacuum detection switch is used for monitoring a vacuum value in the vacuum chuck.

Through adopting above-mentioned technical scheme, when needs detect vacuum chuck, install the vacuum detection switch on a supporting bench, the vacuum detection switch can communicate in vacuum chuck through the trachea, can vacuum chuck and material surface's vacuum value to monitoring vacuum chuck snatchs the suction of material, and then making the sucking disc snatch the material more firm, be favorable to making the test equipment motion more stable.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the test equipment needs to be loaded, the positioning assembly can acquire the material characteristics on the transfer platform and calculate the position distance and the angle deviation between the material and the mounting groove of the test fixture, the material can be moved from the transfer platform to the position right above the test fixture through linkage driving of the first driving assembly, the second driving assembly and the third driving assembly, the stepping motor drives the rotating shaft to rotate according to the angle deviation data, the angle deviation is trimmed and compensated, the material is placed in the mounting groove of the test fixture, the loading of the test equipment is more accurately positioned, and the loading efficiency of the test equipment is improved;

2. when the material characteristics need to be acquired, the adjusting motor drives the first lead screw to rotate, so that the distance between the first vision camera and the second vision camera can be adjusted, the heights of the first vision camera and the second vision camera can be adjusted through different mounting holes, the alignment visual fields of the first vision camera and the second vision camera are adjusted, and the material characteristics are clearer;

3. when the test fixture needs to be positioned, the positioning holes in the test fixture can be caught by the positioning holes in the third sliding table, so that the third sliding table is positioned right above the test fixture, the material can be placed in the test fixture more accurately, and the feeding and positioning of the test equipment are more accurate.

Drawings

Fig. 1 is an overall structure schematic diagram of a material loading mechanism according to an embodiment of the present application.

Fig. 2 is a partially enlarged schematic view of a test fixture according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of the positioning assembly according to the embodiment of the present application.

Description of reference numerals: 1. a work table; 2. a transfer platform; 20. a positioning assembly; 21. a first mounting plate; 211. a first connecting plate; 22. a first vision camera; 23. a second mounting plate; 230. mounting holes; 231. a second connecting plate; 232. connecting holes; 24. a second vision camera; 25. a coaxial light source; 26. a fixed seat; 261. cushion blocks; 27. adjusting the motor; 28. a first lead screw; 29. a slide base; 3. testing the jig; 31. positioning holes; 32. mounting grooves; 4. a first drive assembly; 41. a support table; 411. a support bar; 412. a horizontal table; 42. a first guide rail; 43. a first sliding table; 5. a second drive assembly; 51. a second guide rail; 52. a second sliding table; 6. a third drive assembly; 61. a second lead screw; 62. a third sliding table; 7. a stepping motor; 8. a vacuum chuck; 81. a vacuum detection switch; 9. the camera is positioned.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses material feed mechanism. Referring to fig. 1 and 2, the feeding mechanism includes a workbench 1, a transfer platform 2, and a test fixture 3. Transfer platform 2 fixed connection is in the one end of workstation 1, and transfer platform 2 is the rectangle, and the material of waiting to transport the material of loading is born the weight of on the transfer platform 2, and 3 fixed connection of test fixture have the mounting groove 32 that suits with the material shape on the test fixture 3 in the other end of workstation 1. Fixed mounting has locating component 20 on transfer platform 2, and locating component 20 can acquire the material characteristic on the transfer platform 2 and calculate the position distance and the angular deviation between the material on the transfer platform 2 and the mounting groove 32 of test fixture 3.

Referring to fig. 1, a first driving assembly 4, a second driving assembly 5, a third driving assembly 6, a stepping motor 7 and a vacuum chuck 8 are further installed on the transfer platform 2, the first driving assembly 4 and the second driving assembly 5 are in the same plane, driving directions of the first driving assembly 4 and the second driving assembly 5 are perpendicular to each other in the plane, the third driving assembly 6 is vertically installed on the second driving assembly 5, the driving direction of the third driving assembly 6 is perpendicular to the plane where the first driving assembly 4 and the second driving assembly 5 are located, the stepping motor 7 is installed on the third driving assembly 6, the vacuum chuck 8 is fixedly installed on an output shaft, the vacuum chuck 8 is adsorbed on the surface of a material and can grab the material to transfer, the stepping motor 7 can drive the output shaft to rotate according to an angle deviation calculated by the positioning assembly 20 and can compensate the angle deviation of the material relative to the installation groove 32 of the test fixture 3, so that the material grabbed by the vacuum chuck 8 can be aligned to the installation groove 32 of the test fixture 3.

When the test equipment needs to be loaded, the positioning component 20 obtains the characteristics of the materials on the transfer platform 2, and performs calculation, the position distance and the angle deviation between the materials on the transfer platform 2 and the mounting groove 32 of the test fixture 3 are obtained, the first driving component 4 and the second driving component 5 drive the third driving component 6 to translate in a plane, the third driving component 6 drives the stepping motor 7 to move in the vertical direction, the vacuum chuck 8 can be close to the transfer platform 2 and grab the materials, the first driving component 4 is then used, the second driving component 5 and the third driving component 6 are linked, the materials can be transferred from the transfer platform 2 to the position right above the test fixture 3, the stepping motor 7 drives the output shaft to rotate according to the angle deviation data calculated by the positioning component 20, the angle deviation of the materials is compensated, the position of the materials is adjusted, the materials are right opposite to the mounting groove 32 of the test fixture 3, the vacuum chuck 8 puts the materials in the mounting groove 32, so that the loading positioning of the test equipment is more accurate, and the loading efficiency of the test equipment is improved.

Referring to fig. 1 and 3, the positioning assembly 20 includes a first mounting plate 21, a first vision camera 22, a second mounting plate 23, a second vision camera 24, and a coaxial light source 25. First mounting panel 21 fixed connection is at the top surface of transfer platform 2, and second mounting panel 23 sliding connection is at the top surface of transfer platform 2, and a plurality of mounting holes 230 have all vertically been seted up to the side of first mounting panel 21 and second mounting panel 23. The lateral wall fixedly connected with first connecting plate 211 of first vision camera 22, the lateral wall fixedly connected with second connecting plate 231 of second vision camera 24, connecting hole 232 has all been seted up on first connecting plate 211 and the second connecting plate 231, connecting hole 232 is waist type hole, connecting hole 232 on the first connecting plate 211 is to the mounting hole 230 that is located one on first mounting panel 21 and pass through screw connection, connecting hole 232 on the second connecting plate 231 is to the mounting hole 230 that is located one on second mounting panel 23 and pass through screw connection, can be with first vision camera 22 fixed connection on first mounting panel 21, with second vision camera 24 fixed connection on second mounting panel 23. By changing the alignment and fixing of the connection holes 232 to different mounting holes 230, the distance between the first vision camera 22 and the second vision camera 24 relative to the material on the transfer platform 2 can be adjusted, so that the obtained material features are clearer.

Referring to fig. 3, the first visual camera 22 and the second visual camera 24 are both CCD industrial cameras, the lenses of the first visual camera 22 and the second camera lens face the material on the transfer platform 2, and can photograph the feature marks of the material, the feature marks can be cross marks and linear mark points which are at the same corner or are carried by themselves, and are compared and analyzed with the image of the preset test fixture 3, and the position distance and angle deviation data between the material on the transfer platform 2 and the mounting groove 32 of the test fixture 3 are calculated.

Referring to fig. 3, one side of the first mounting plate 21 far from the first vision camera 22 is fixedly connected with a fixing seat 26, one side of the transfer platform 2 is fixedly mounted with a cushion block 261, the fixing seat 26 is fixedly mounted on the cushion block 261, one side of the fixing seat 26 far from the second mounting plate 23 is fixedly mounted with an adjusting motor 27, an output shaft of the adjusting motor 27 faces the second mounting plate 23, a first lead screw 28 is fixedly connected to an output shaft of the adjusting motor 27, a slide seat 29 is sleeved on the first lead screw 28, and one side of the second mounting plate 23 far from the second vision camera 24 is fixedly connected to the slide seat 29. The adjusting motor 27 rotates, the sliding base 29 can be driven by the first lead screw 28 to move, the second mounting plate 23 is driven to move, the distance between the first vision camera 22 and the second vision camera 24 is adjusted, the visual field of vision photographing is adjusted, the alignment visual field meets the sizes of materials with different quantities, and the alignment visual field can be compatible with 3-8 materials.

Referring to fig. 1, the coaxial light source 25 is fixedly installed at the top end of the first installation plate 21, the coaxial light source 25 is a white, high-brightness and dustproof light source, and the coaxial light source 25 faces the material on the transfer platform 2, so that the images of the first vision camera 22 and the second vision camera 24 are clearer.

Referring to fig. 1, the first horizontal driving member includes a support table 41, a first guide rail 42, and a first slide table 43. Supporting bench 41 fixed mounting is on workstation 1, and supporting bench 41 includes two vertical support rods 411 and a horizontal stand 412, and the side-mounting of one of them bracing piece 411 has vacuum detection switch 81, and vacuum detection switch 81 passes through the trachea and communicates in vacuum chuck 8, can detect the actual vacuum value in vacuum chuck 8 to can monitor vacuum chuck 8's operating condition and control vacuum chuck 8's break-make. First guide rail 42 is installed in the one side that the workstation 1 was kept away from to brace table 41, and first guide rail 42 is the rolling linear guide, and repetitive motion precision 0.05mm, and servo motor drive is passed through to the one end of first guide rail 42, and first slip table 43 sliding connection can make first slip table 43 move in the length direction of first guide rail 42 in first guide rail 42.

Referring to fig. 1, the second driving assembly 5 includes a second guide rail 51 and a second sliding table 52, an end side surface of one end of the second guide rail 51 is fixedly installed on a top surface of the first sliding table 43, the second guide rail 51 and the first guide rail 42 are located in the same horizontal plane, the first guide rail 42 is a rolling linear guide rail, the precision of the repetitive motion is ± 0.05mm, a length direction of the second guide rail 51 is perpendicular to a length direction of the first guide rail 42, one end of the second guide rail 51 away from the first sliding table 43 is driven by a servo motor, the second sliding table 52 is slidably connected to a side surface of the second guide rail 51, the second sliding table 52 can be moved in the length direction of the second guide rail 51, and the second sliding table 52 can be moved in horizontal planes of the first guide rail 42 and the second guide rail 51.

Referring to fig. 1, the third driving assembly 6 includes a second lead screw 61 and a third sliding table 62, the second lead screw 61 is vertically and fixedly connected to one surface of the second sliding table 52 far away from the second guide rail 51, the second lead screw 61 is a ball screw, the top end of the second lead screw 61 is driven by a servo motor, the length direction of the second lead screw 61 is perpendicular to the length direction of the second guide rail 51, that is, the length direction of the second lead screw 61 is perpendicular to the plane of the workbench 1, the third sliding table 62 is sleeved on the peripheral side of the second lead screw 61, that is, the third sliding table 62 can move in the direction perpendicular to the planes of the first guide rail 42 and the second guide rail 51, the stepping motor 7 is installed on the surface of the third sliding table 62 far away from the second lead screw 61, the output shaft of the stepping motor 7 faces the workbench 1, and can drive the vacuum chuck 8 installed on the output shaft to move vertically.

Referring to fig. 1 and 2, the bottom surface of the third sliding table 62 is further fixedly provided with a positioning camera 9, the positioning camera 9 is a CCD industrial camera, the test fixture 3 is provided with a positioning hole 31, and the positioning camera 9 captures information of the positioning hole 31 by photographing, so that the third sliding table 62 positions the test fixture 3, corrects the position of the vacuum chuck 8, and allows the vacuum chuck 8 to discharge materials with respect to the test fixture 3.

The implementation principle of material feed mechanism of the embodiment of this application is: when the test equipment needs to be loaded, the adjusting motor 27 drives the first lead screw 28 to rotate and adjust the positions of the first vision camera 22 and the second vision camera 24, so that the first vision camera 22 and the second vision camera 24 shoot the material characteristics on the transfer platform 2, the position distance and the angle deviation between the material and the test fixture 3 are calculated, the stepping motor 7 and the vacuum chuck 8 can grab the material and translate the material to the upper side of the test fixture 3 through the driving of the first guide rail 42, the second guide rail 51 and the second lead screw 61, the positioning camera 9 is used for acquiring the image of the positioning hole 31, the correcting vacuum chuck 8 is positioned right above the test fixture 3, the stepping motor 7 follows the angle deviation data obtained by the first vision camera 22 and the second vision camera 24 to drive the output shaft to rotate, the angle deviation is compensated, the vacuum chuck 8 discharges the mounting groove 32 of the test fixture 3, the loading positioning of the test equipment is more accurate, and the loading efficiency of the test equipment is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. Material feed mechanism, its characterized in that: the transfer platform is characterized by comprising a workbench (1), a transfer platform (2) and a test fixture (3), wherein the transfer platform (2) and the test fixture (3) are arranged on the workbench (1), the transfer platform (2) is used for bearing materials to be transferred, the test fixture (3) is used for clamping the materials to be tested, a positioning component (20) is arranged on the transfer platform (2), and the positioning component (20) is used for acquiring material characteristics on the transfer platform (2) and calculating position distance and angle deviation between the materials and the test fixture (3); a first driving assembly (4), a second driving assembly (5) and a third driving assembly (6) are arranged on the transfer platform (2), the first driving assembly (4) and the second driving assembly (5) are arranged in the same plane, the driving direction of the first driving assembly (4) is perpendicular to the driving direction of the second driving assembly (5), and the third driving assembly (6) is vertically arranged on the second driving assembly (5); the third driving assembly (6) is provided with a stepping motor (7), an output shaft of the stepping motor (7) faces the workbench (1), a vacuum chuck (8) is arranged on an output shaft of the stepping motor (7), the vacuum chuck (8) is used for grabbing materials, and the stepping motor (7) can drive the vacuum chuck (8) to rotate according to angle deviation data.

2. The material loading mechanism of claim 1, wherein: locating component (20) includes first mounting panel (21), first vision camera (22), second mounting panel (23), second vision camera (24) and coaxial light source (25), first mounting panel (21) vertical fixed set up in on transfer platform (2), the vertical slip of second mounting panel (23) set up in on transfer platform (2), first vision camera (22) set up in a side of first mounting panel (21), second vision camera (24) set up in a side of second mounting panel (23), first vision camera (22) with the camera lens of second vision camera (24) all moves towards transfer platform (2), coaxial light source (25) set up in first mounting panel (21) is kept away from the one end of transfer platform (2).

3. The material feed mechanism of claim 2, wherein: keep away from first mounting panel (21) the one side of first vision camera (22) is provided with fixing base (26), one side of fixing base (26) is provided with adjusting motor (27), be provided with first lead screw (28) on the output shaft of adjusting motor (27), the cover is equipped with slide (29) on first lead screw (28), keep away from second mounting panel (23) the one side fixed connection of second vision camera (24) in one side of slide (29).

4. The material feed mechanism of claim 2, wherein: the side surfaces of the first mounting plate (21) and the second mounting plate (23) are provided with a plurality of mounting holes (230), and the mounting holes (230) are used for fixedly mounting the first visual camera (22) and the second visual camera (24).

5. The material loading mechanism of claim 1, wherein: first drive assembly (4) are including brace table (41), first guide rail (42) and first slip table (43), brace table (41) set up in on workstation (1), first guide rail (42) set up in brace table (41) is kept away from the one side of workstation (1), first slip table (43) sliding connection in first guide rail (42).

6. The material feed mechanism of claim 5, wherein: the second drive assembly (5) comprises a second guide rail (51) and a second sliding table (52), one end of the second guide rail (51) is arranged on the first sliding table (43), the length direction of the second guide rail (51) is perpendicular to the length direction of the first guide rail (42), and the second sliding table (52) is connected with the second guide rail (51) in a sliding mode.

7. The material loading mechanism of claim 6, wherein: third drive assembly (6) include second lead screw (61) and third slip table (62), second lead screw (61) vertical set up in second slip table (52) is kept away from in the one side of second guide rail (51), the length direction perpendicular to of second lead screw (61) workstation (1) plane, third slip table (62) cover is located the week side of second lead screw (61), step motor (7) set up in on third slip table (62).

8. The material feed mechanism of any one of claim 7, wherein: be provided with location camera (9) on third slip table (62), the camera lens orientation of location camera (9) workstation (1), be provided with locating hole (31) on test fixture (3).

9. The material feed mechanism of claim 5, wherein: the vacuum detection device is characterized in that a vacuum detection switch (81) is arranged on the supporting table (41), the vacuum detection switch (81) is connected to the vacuum chuck (8), and the vacuum detection switch (81) is used for monitoring a vacuum value in the vacuum chuck (8).