Automatic plate pressing mechanism of large-stroke image measuring instrument

Abstract

The application relates to an automatic pressing plate mechanism of a large-stroke image measuring instrument, and belongs to the technical field of image measurement. The automatic pressing plate mechanism of the large-stroke image measuring instrument comprises a carrying table and a pressing plate assembly. The pressing plate assembly comprises a plate body part and a movable connecting piece. The movable connecting piece is arranged at one end of the plate body part and is movably connected with the carrying table. The movable connecting piece is configured to drive the plate body part to rotate along a first axis and move along a first direction. The first direction intersects with the direction of the first axis. The automatic pressing plate mechanism of the large-stroke image measuring instrument provided by the application at least solves the problem of insufficient adaptability in the related art.

Description

Technical Field

[0001] This application relates to the field of image measurement technology, and in particular to an automatic pressure plate mechanism for a long-stroke image measuring instrument. Background Technology

[0002] In image measurement, workpieces are typically placed on the glass surface of a worktable. However, some workpieces, such as flexible electronic devices, may warp or wrinkle when placed on the glass surface, affecting measurement accuracy. In such cases, relevant techniques usually employ glass pressure plates to flatten the workpiece, eliminating the impact of warping or wrinkles on the measurement.

[0003] However, due to the thickness differences between different workpieces, the pressure plate mechanism of the relevant technology is difficult to adapt to workpieces of different thicknesses. Even if some workpieces can be deformed under the action of the glass pressure plate, some areas of some thicker workpieces cannot be flattened, which is especially obvious in large-stroke image measurement equipment. Utility Model Content

[0004] Therefore, it is necessary to provide an automatic platen mechanism for a large-stroke image measuring instrument to address the problem of insufficient applicability of the platen mechanism in related technologies.

[0005] This application provides an automatic pressure plate mechanism for a long-stroke image measuring instrument. The automatic pressure plate mechanism includes a stage and a pressure plate assembly. The pressure plate assembly includes a plate body and a movable connector. The plate body includes a frame with an installation space and a transparent plate connected to the frame and installed in the installation space. The movable connector is disposed at one end of the frame and is movably connected to the stage. The movable connector is configured to drive the plate body to rotate along a first axis and move along a first direction, which is not parallel to the direction of the first axis.

[0006] In some embodiments, the movable connector includes a pivot mounting plate and a first pivot, wherein the pivot mounting plate is slidably connected to the stage and can reciprocate along a first direction; the first pivot is disposed on the pivot mounting plate and rotatably connected to the pivot mounting plate, and the central axis of the first pivot is the first axis.

[0007] In some embodiments, the stage includes a base and a sliding assembly, wherein the sliding assembly includes a fixed seat, a guide rail and a slider, the fixed seat is connected to the base, the guide rail is disposed on the fixed seat and disposed along a first direction, the slider slides in cooperation with the guide rail, and the slider is connected to a rotating shaft mounting plate.

[0008] In some embodiments, the number of sliding components is at least two, and each sliding component is arranged sequentially at intervals along a direction parallel to the first axis.

[0009] In some embodiments, the sliding component further includes a limiting block connected to the slider, and at least a portion of the limiting block is positioned closer to the substrate than the slider in a first direction.

[0010] In some embodiments, the fixing base includes a first plate, a second plate, and a reinforcing rib. The plane containing the first plate intersects the plane containing the second plate, and the plane containing the first plate is parallel to a first direction. The reinforcing rib is connected to the first plate and the second plate, respectively.

[0011] In some embodiments, the frame includes a first wall and a second wall that are parallel to and spaced apart from each other on a first axis, and two third walls that connect the first wall and the second wall. The first wall, the second wall and the two third walls together enclose an installation space. A movable connector is connected to the first wall and is positioned along the direction from the first wall to the second wall. At least a portion of the third wall protrudes from the second wall.

[0012] In some embodiments, the automatic pressure plate mechanism of the large-stroke image measuring instrument further includes a drive cylinder, one end of which is hinged to the frame and the other end of which is hinged to the stage.

[0013] In some embodiments, the automatic pressure plate mechanism of the long-stroke image measuring instrument further includes a sensor electrically connected to the drive cylinder and configured to send a stop signal to the drive cylinder when a foreign object is detected.

[0014] In some embodiments, the sensor is disposed on the portion of the third wall that protrudes from the second wall.

[0015] The automatic pressure plate mechanism of the large-stroke image measuring instrument provided in the embodiments of this application has at least the following beneficial effects:

[0016] By configuring the pressure plate assembly to include a movable connector that is movably connected to the stage, and configuring the movable connector to drive the plate body to rotate along the first axis and move in the first direction, the pressure plate assembly can open the workpiece storage space between itself and the stage by rotating along the first axis, allowing the operator to place the workpiece into the workpiece storage space. At the same time, the movable connector can drive the plate body to move in the first direction, allowing the plate body to adjust the distance between itself and the stage, thereby adapting to workpieces of different thicknesses and improving the applicability of the automatic pressure plate mechanism of the large stroke image measuring instrument.

[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the automatic pressure plate mechanism of the large-stroke image measuring instrument provided in one embodiment of this application;

[0020] Figure 2 This is a three-dimensional structural diagram of the automatic pressure plate mechanism of the large-stroke image measuring instrument provided in one embodiment of this application, after removing the stage;

[0021] Figure 3 This is a three-dimensional structural diagram of the automatic pressure plate mechanism of the large-stroke image measuring instrument provided in one embodiment of this application, after removing the stage;

[0022] Figure 4 This is a schematic diagram of a portion of the automatic pressure plate mechanism of the long-stroke image measuring instrument provided in one embodiment of this application.

[0023] Figure 5 This is a schematic diagram of the automatic pressure plate mechanism of the large-stroke image measuring instrument provided in one embodiment of the present application, in the state of being pressed at the open end after the removal of the stage.

[0024] Figure 6 This is a schematic diagram of the automatic pressure plate mechanism of the large-stroke image measuring instrument provided in one embodiment of the present application, with the open end of the mechanism in the open state after the removal of the stage.

[0025] Figure 7 This is a schematic diagram of the automatic pressure plate mechanism of the large-stroke image measuring instrument provided in one embodiment of the present application.

[0026] Explanation of reference numerals in the attached drawings: 100, Automatic pressure plate mechanism of the large-stroke image measuring instrument; 10, Stage; 11, Base; 12, Sliding assembly; 121, Fixed seat; 1211, First plate; 1212, Second plate; 1213, Reinforcing rib; 122, Guide rail; 123, Slider; 124, Limiting block; 20, Pressure plate assembly; 21, Plate part; 211, Frame; 2111, First wall; 2112, Second wall; 2113, Third wall; 212, Transparent plate; 22, Movable connector; 221, Rotary shaft mounting plate; 222, First rotating shaft; 30, Drive cylinder; 31, Second rotating shaft; 32, Third rotating shaft; 40, Sensor;

[0027] X, the first direction; Y, the direction of the first axis. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] Furthermore, where the term "and / or" appears, "and / or" merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. Where the terms "first" and "second" appear, these terms are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" can explicitly or implicitly include at least one of those features. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0034] In image measurement, workpieces are typically placed on the glass surface of a worktable. However, some workpieces, such as flexible electronic devices, may warp or wrinkle when placed on the glass surface, affecting measurement accuracy. In such cases, relevant techniques usually employ glass pressure plates to flatten the workpiece, eliminating the impact of warping or wrinkles on the measurement.

[0035] However, due to the thickness differences between different workpieces, the pressure plate mechanism of the relevant technology is difficult to adapt to workpieces of different thicknesses. Even if some workpieces can be deformed under the action of the glass pressure plate, some areas of some thicker workpieces cannot be flattened, which is especially obvious in large-stroke image measurement equipment.

[0036] Please refer to the following: Figures 1 to 7This application provides an automatic pressure plate mechanism 100 for a large-stroke image measuring instrument. The automatic pressure plate mechanism 100 includes a stage 10 and a pressure plate assembly 20. The pressure plate assembly 20 includes a plate body 21 and a movable connector 22. The plate body 21 includes a frame 211 with an installation space and a transparent plate 212 connected to the frame 211 and installed in the installation space. The movable connector 22 is disposed at one end of the frame 211 and is movably connected to the stage 10. The movable connector 22 is configured to drive the plate body 21 to rotate along a first axis (not shown) and move along a first direction X. The first direction X is not parallel to the direction Y where the first axis is located.

[0037] A long-stroke image measuring instrument is a precision measuring device that integrates optical, mechanical, and electronic technologies. It uses a high-resolution CCD (Charge Coupled Device) color camera, a continuous zoom objective lens, and a color display to image the workpiece and then performs measurement analysis using specialized software. In recent years, it has been widely used in the aerospace, vehicle manufacturing, electronics manufacturing, and precision machinery and mold manufacturing industries.

[0038] The automatic pressure plate mechanism 100 of the large-stroke imaging measuring instrument is used to position the workpiece by pressing, so that the flexible workpiece can be stretched, thereby improving the accuracy of subsequent imaging and measurement analysis.

[0039] The stage 10 is used to support the workpiece and install other components. When the automatic pressure plate mechanism 100 of the large stroke image measuring instrument is working, the operator can open the automatic pressure plate mechanism 100 of the large stroke image measuring instrument, put the workpiece to be inspected in, and then position and stretch the workpiece to be inspected by pressing.

[0040] In addition, the stage 10 can also be used to mount the light source system, lens module, motion system, and worktable of a large-stroke image measuring instrument. The lens module is used to photograph the workpiece; the light source system can include coaxial light, bottom light, and surface light to illuminate the workpiece and highlight its edges or image features; the motion system includes an X-axis drive structure, a Y-axis drive structure, and a Z-axis drive structure, which control the relative movement of the lens module and the worktable in the three mutually perpendicular XYZ directions; the worktable is a light-transmitting worktable, typically a glass platform.

[0041] The pressure plate assembly 20 is the component in the automatic pressure plate mechanism 100 of the large stroke image measuring instrument that is actually used to press and position the workpiece to be inspected.

[0042] The pressure plate assembly 20 includes a plate body 21 and a movable connector 22. The plate body 21 is the main body of the pressure plate assembly 20. The movable connector 22 is located at one end of the plate body 21 and is movably connected to the stage 10. In this way, the plate body 21 can adjust its relative position to the stage 10 by rotating, moving, etc., so as to achieve different functions at different stages of image measurement of the work to be inspected.

[0043] For example, before performing image measurement on the workpiece to be inspected, the operator can control the plate portion 21 to rotate, thereby increasing the distance between one end of the plate portion 21 and the stage 10 to form an opening. In this way, the operator can place the workpiece to be inspected on the worktable of the stage 10 through the opening, and then rotate the plate portion 21 in the opposite direction to return it to its original position, so as to work together with the worktable to press and position the workpiece to be inspected. At the same time, when the thickness of the workpiece to be inspected is large, the plate portion 21 can move along the first direction X to match the thickness of the workpiece to be inspected, thereby adapting to different thicknesses of the workpiece to be inspected, and thus making it more adaptable.

[0044] The frame 211 is the outer contour structure of the plate portion 21 and is used to mount the transparent plate 212. In these embodiments of the present application, it can be made of metal or alloy materials to have good support strength.

[0045] The transparent plate 212 is a component that actually works with the worktable to press and position the workpiece to be inspected. The transparent plate 212 allows light to pass through, so that the lens module of the large stroke image measuring instrument can pass through the transparent plate 212 to take pictures of the workpiece to be inspected.

[0046] In these embodiments of this application, the transparent plate 212 can be a glass plate or other transparent plastic sheet, so that the lens module can clearly capture the workpiece to be inspected.

[0047] The movable connector 22 is connected to one end of the frame 211 to obtain better structural stability.

[0048] The movable connector 22 is located at one end of the plate portion 21, meaning that the movable connector 22 is located at one end of the plane on which the plate portion 21 is located. For example, in some embodiments, the cross-sectional shape of the plate portion 21 on its plane is rectangular, then the movable connector 22 can be located on any one of the four walls of the plate portion 21; in some embodiments, the cross-sectional shape of the plate portion 21 on its plane is circular, then the movable connector 22 can be located at any point on the outer contour of the plate portion 21.

[0049] The movable connector 22 is movably connected to the stage 10, meaning that the movable connector 22 can be connected to the stage 10 by a sliding connection or a rotational connection. Specifically, the movable connector 22 is configured to drive the plate portion 21 to rotate along a first axis (not shown) and move in a first direction X. A possible implementation is that the movable connector 22 is slidably connected to the stage 10, and the movable connector 22 itself is rotatably connected to the plate portion 21; alternatively, in some embodiments, the movable connector 22 may be rotatably connected to the stage, and the movable connector 22 itself may be slidably connected to the plate portion 21.

[0050] According to the embodiments of this application, the automatic pressure plate mechanism 100 of the large-stroke image measuring instrument includes a movable connector 22 that is movably connected to the stage 10. The movable connector 22 is configured to drive the plate body 21 to rotate along the first axis and move along the first direction X. This allows the pressure plate assembly 20 to open the workpiece storage space between itself and the stage 10 by rotating along the first axis, allowing the operator to place the workpiece into the workpiece storage space. At the same time, the movable connector 22 can drive the plate body 21 to move along the first direction X, allowing the plate body 21 to adjust the distance between itself and the stage 10 through the movable connector 22, thereby adapting to workpieces of different thicknesses and improving the applicability of the automatic pressure plate mechanism 100 of the large-stroke image measuring instrument.

[0051] In some embodiments, the movable connector 22 includes a pivot mounting plate 221 and a first pivot 222, wherein the pivot mounting plate 221 is slidably connected to the stage 10 and can reciprocate along the first direction X; the first pivot 222 is disposed on the pivot mounting plate 221 and rotatably connected to the pivot mounting plate 221, and the central axis of the first pivot 222 is the first axis.

[0052] The function of the rotating shaft mounting plate 221 is to mount the first rotating shaft 222, giving the first rotating shaft 222 a base for rotation. That is, in these embodiments of this application, the plate body 21 is connected to the movable connecting member 22 in such a way that the plate body 21 is connected to the first rotating shaft 222, so that the plate body 21 can rotate relative to the rotating shaft mounting plate 221 under the action of the first rotating shaft 222.

[0053] Meanwhile, the rotating shaft mounting plate 221 is slidably connected to the stage 10 and can reciprocate along the first direction X. This slidable connection between the rotating shaft mounting plate 221 and the stage 10 allows the plate body 21 and the movable connecting member 22, as a whole, to change position with the stage 10 in the first direction X, thus adapting to workpieces of different thicknesses. Simultaneously, the rotating shaft mounting plate 221 and the stage 10 are in a state of free sliding. Therefore, during the process of the plate body 21 pressing the workpiece, after the plate body 21 contacts the workpiece, the rotating shaft mounting plate 221 can automatically slide to a suitable height, thereby achieving uniform compression of the workpiece and avoiding the inconvenience of repeatedly manually adjusting the height of the rotating shaft mounting plate 221.

[0054] The first rotating shaft 222 is disposed on the rotating shaft mounting plate 221 and rotatably connected to the rotating shaft mounting plate 221. In a possible implementation, both ends of the first rotating shaft 222 are rotatably connected to the rotating shaft mounting plate 221 respectively. At this time, the plate body 21 can be connected to the first rotating shaft 222 so that the plate body 21 can rotate relative to the rotating shaft mounting plate 221.

[0055] In these embodiments of the present application, the first rotating shaft 222 can be an electric rotating shaft, so that the first rotating shaft 222 can have driving capability. In this case, the first rotating shaft 222 itself can drive or assist in driving the plate body 21 to rotate relative to the rotating shaft mounting plate 221. In some embodiments, the first rotating shaft 222 can also be set to only serve a connecting function. In this case, the first rotating shaft 222 is used to rotatably connect the plate body 21 and the rotating shaft mounting plate 221.

[0056] In some embodiments, the stage 10 includes a base 11 and a sliding assembly 12, wherein the sliding assembly 12 includes a fixed seat 121, a guide rail 122 and a slider 123. The fixed seat 121 is connected to the base 11, the guide rail 122 is disposed on the fixed seat 121 and disposed along the first direction X, the slider 123 is slidably engaged with the guide rail 122, and the slider 123 is connected to the rotating shaft mounting plate 221.

[0057] The base 11 is the main body of the stage 10 and has a large mass to improve the structural stability of the automatic pressure plate mechanism 100 of the large stroke image measuring instrument.

[0058] The sliding component 12 is a component disposed on the base 11 and connected to the movable connector 22, so that the movable connector 22 can be displaced relative to the base 11 in the first direction X by sliding.

[0059] The fixing seat 121 is connected to the base 11 to improve the structural consistency between the sliding assembly 12 and the base 11. The fixing seat 121 serves as the mounting base for other components in the sliding assembly 12. In these embodiments of the present application, the fixing seat 121 and the base 11 can be fixedly connected by welding or even integral molding to improve the support capacity of the fixing seat 121 and adapt it to a large-stroke image measuring instrument.

[0060] The guide rail 122 and the slider 123 cooperate with each other and are movable components disposed between the movable connector 22 and the base 11, used to realize the relative displacement between the movable connector 22 and the base 11 in the first direction X. In these embodiments of this application, the guide rail 122 is disposed on the fixed base 121 and disposed along the first direction X, the slider 123 is slidably engaged with the guide rail 122, and the slider 123 is connected to the rotating shaft mounting plate 221, so that the rotating shaft mounting plate 221 (movable connector 22) and the base 11 can be displaced in the first direction X.

[0061] It should be noted that in some embodiments of this application, the guide rail 122 can also be set on the rotating shaft mounting plate 221, and the slider 123 can be connected to the fixed seat 121. Similarly, the relative positional relationship between the movable connecting member 22 and the base 11 in the first direction X can be adjusted by the sliding cooperation between the slider 123 and the guide rail 122.

[0062] In some embodiments, the number of sliding components 12 is at least two, and each sliding component 12 is arranged at intervals along a direction Y parallel to the first axis.

[0063] In these embodiments of the present application, by setting the number of sliding components 12 to at least two, the relative displacement between the movable connector 22 and the base 11 can be achieved by the joint action of at least two sliding components 12, and it has stronger support capabilities and is more suitable for large-stroke image measuring instruments.

[0064] For example, in these embodiments of this application, the number of sliding components 12 can be two, three, four, etc., and the spacing between adjacent sliding components 12 is equal in the direction Y parallel to the first axis.

[0065] In some embodiments, the sliding component 12 further includes a limiting block 124 connected to the slider 123, and at least a portion of the limiting block 124 is disposed closer to the base 11 than the slider 123 in the first direction X.

[0066] The function of the limiting block 124 is to limit the sliding adjustment range of the slider 123. When the workpieces at the inspection site are relatively simple, by adjusting the relative position between the limiting block 124 and the slider 123, the distance between the pressure plate assembly 20 and the stage 10 in the pressing state can be controlled to the thickness of the workpiece to be inspected, so as to further improve the reliability of the automatic pressure plate mechanism 100 of the large stroke image measuring instrument.

[0067] In the first direction X, at least a portion of the limiting block 124 is positioned closer to the base 11 than the slider 123, so that as the slider 123 slides along the guide rail 122 (in the direction toward the base 11), the limiting block 124 will contact the base 11 first, thereby restricting the continued sliding of the slider 123.

[0068] In these embodiments of this application, a through hole extending along the thickness direction can be provided on the limiting block 124, and the length direction of the through hole is set along the first direction X. At this time, the relative positional relationship between the limiting block 124 and the slider 123 can be adjusted by adjusting the position of the screw in the through hole.

[0069] In some embodiments, the fixing base 121 includes a first plate 1211, a second plate 1212, and a reinforcing rib 1213. The plane where the first plate 1211 is located intersects the plane where the second plate 1212 is located, and the plane where the first plate 1211 is located is parallel to the first direction X. The reinforcing rib 1213 is connected to the first plate 1211 and the second plate 1212 respectively.

[0070] The plane where the first plate 1211 is located intersects the plane where the second plate 1212 is located. This means that both the first plate 1211 and the second plate 1212 are flat plate structures, and the plane where the first plate 1211 is located is parallel to the first direction X. This allows the first plate 1211 and the second plate 1212 to form a structure similar to the letter "L", which can enhance the support capacity of the fixed base 121 and is compatible with large-stroke image measuring instruments.

[0071] The first plate 1211 is parallel to the first direction X in its plane, so that the first plate 1211 can be used to install the guide rail 122, while the second plate 1212 is used to improve the structural strength of the fixing seat 121.

[0072] Meanwhile, connecting the reinforcing ribs 1213 to the first plate 1211 and the second plate 1212 respectively can further enhance the structural strength of the fixing base 121.

[0073] In some embodiments, the frame 211 includes a first wall 2111 and a second wall 2112 that are parallel to and spaced apart from each other on a first axis, and two third walls 2113 that connect the first wall 2111 and the second wall 2112. The first wall 2111, the second wall 2112 and the two third walls 2113 together form an installation space. A movable connector 22 is connected to the first wall 2111 and is positioned along the direction from the first wall 2111 to the second wall 2112. At least a portion of the third wall 2113 protrudes from the second wall 2112.

[0074] In these embodiments of the present application, the cross-sectional shape of the plate portion 21 is rectangular, that is, the first wall 2111, the second wall 2112 and the two third walls 2113 together form a rectangular installation space. At this time, the transparent plate 212 can be set in a rectangular shape and assembled in the installation space, and connected to the inner wall surfaces of the first wall 2111, the second wall 2112 and the two third walls 2113 respectively.

[0075] The movable connector 22 is connected to the first wall 2111, meaning one side of the first wall 2111 is the "movable end" where the plate part 21 rotates or slides. One end of the second wall 2112, opposite the first wall 2111, is the "open end." During the operation of the automatic pressure plate mechanism 100 of the large-stroke image measuring instrument, the operator can control the rotation of the plate part 21 to increase the opening of the open end, allowing the workpiece to be inspected to be placed inside. Conversely, the operator can reverse the plate part 21 to decrease the opening of the open end, at which point the transparent plate 212 gradually contacts the workpiece to be inspected, thus pressing and positioning it. Simultaneously, since the movable end of the plate part 21 can move along the first direction X, a simple lever is formed between the open end, the movable end, and the contact position between the transparent plate 212 and the workpiece to be inspected. This lever can drive the movable end of the plate part 21 to displace along the first direction X, ultimately adapting it to the thickness of the workpiece to be inspected.

[0076] At least a portion of the third wall 2113 protrudes from the second wall 2112, which is intended to form a safe space by using the protruding portion of the third wall 2113 in conjunction with the second wall 2112. That is, when the pressure plate assembly 20 is in operation, it can prompt the operator to stay away to avoid being pinched or bumped, thereby further improving the reliability of the automatic pressure plate mechanism 100 of the large stroke image measuring instrument.

[0077] In some embodiments, the automatic pressure plate mechanism 100 of the large stroke image measuring instrument further includes a drive cylinder 30, one end of which is hinged to the frame 211 and the other end is hinged to the stage 10.

[0078] The drive cylinder 30 is an automatic drive component in the automatic pressure plate mechanism 100 of the large stroke image measuring instrument, so as to drive the opening end of the plate body 21 to open and close through the extension and retraction of the drive cylinder 30.

[0079] In these embodiments of this application, the drive cylinder 30 can be configured as a double-acting cylinder, thus enabling it to both push up and pull down the plate portion 21 via an air-driven cylinder. Alternatively, in some embodiments, the drive cylinder 30 can be configured as a single-acting cylinder, in which case it can push up the plate portion 21 via an air-driven cylinder and pull down the plate portion 21 by gravity.

[0080] One end of the drive cylinder 30 is hinged to the frame 211, and the other end is hinged to the stage 10, which is intended to improve the reliability of the drive cylinder 30. Because the drive cylinder 30 will tilt when the plate part 21 rotates around the first rotating shaft 222, it is necessary to set both ends of the drive cylinder 30 to be hinged to the frame 211 and the stage 10 respectively, so as to allow the drive cylinder 30 to tilt and avoid excessive stress between the structures.

[0081] In some embodiments of this application, the drive cylinder 30 can be connected to the frame 211 via a second rotating shaft 31, and the drive cylinder 30 can be connected to the platform 10 via a third rotating shaft 32. The structures of the second rotating shaft 31 and the third rotating shaft 32 can be the same as those of the first rotating shaft 222, so that the two ends of the drive cylinder 30 are respectively hinged to the frame 211 and the platform 10.

[0082] In some embodiments of this application, the stroke of the drive cylinder 30 can be set to 100 to 300 mm to adapt to different workpieces to be inspected.

[0083] In some embodiments, a handle may also be provided on the second wall 2112 so that the operator can manually open or close the plate section 21 in the event of a power outage that causes the drive cylinder 30 to malfunction.

[0084] In some embodiments, the automatic pressure plate mechanism 100 of the long-stroke image measuring instrument further includes a sensor 40, which is electrically connected to the drive cylinder 30 and configured to send a stop signal to the drive cylinder 30 when a foreign object is detected.

[0085] The sensor 40 is used for foreign object detection. In these embodiments of the present application, the sensor 40 can be mainly used to detect the position of the operator, so as to prevent the operator from getting too close when the drive cylinder 30 is working and reduce the risk of injury to the operator.

[0086] In some embodiments of this application, the sensor 40 can be configured as a photoelectric sensor, which has a transmitting end and a receiving end. The transmitting end emits infrared light to the receiving end. When the signal is blocked, the photoelectric sensor will send a signal to stop driving the cylinder 30. Therefore, if an operator stands too close or their hand passes by the sensor 40, the driving cylinder 30 will remain in its current state and will not move, thereby avoiding collision or injury to the operator.

[0087] In some embodiments, sensor 40 may also be other types of sensors, such as electromagnetic sensors, which can determine that an object has passed by the glass plate.

[0088] In some embodiments, the sensor 40 can be disposed on the portion of the third wall 2113 that protrudes from the second wall 2112. In this way, the sensor 40 can monitor the aforementioned safe space. When the pressure plate assembly 20 is in operation, if the sensor 40 detects that an operator is in the safe space, it can send a stop signal to the drive cylinder 30 through the sensor 40, further reducing the risk of the operator being trapped or hit.

[0089] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0090] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An automatic pressure plate mechanism for a large-stroke image measuring instrument, characterized in that, include: Stage; A pressure plate assembly includes a plate body and a movable connector. The plate body includes a frame with an installation space and a transparent plate connected to the frame and installed in the installation space. The movable connector is disposed at one end of the frame and is movably connected to the stage. The movable connector is configured to drive the plate body to rotate along a first axis and move along a first direction, wherein the first direction is not parallel to the direction in which the first axis is located.

2. The automatic pressure plate mechanism of the large-stroke image measuring instrument according to claim 1, characterized in that, The movable connector includes: The rotating mounting plate is slidably connected to the platform and can reciprocate along the first direction; A first rotating shaft is disposed on the rotating shaft mounting plate and rotatably connected to the rotating shaft mounting plate, wherein the central axis of the first rotating shaft is the first axis.

3. The automatic pressure plate mechanism of the large-stroke image measuring instrument according to claim 2, characterized in that, The stage includes: Matrix; The sliding assembly includes a fixed base, a guide rail, and a slider. The fixed base is connected to the base, the guide rail is disposed on the fixed base and arranged along the first direction, the slider slides with the guide rail, and the slider is connected to the rotating shaft mounting plate.

4. The automatic pressure plate mechanism of the large-stroke image measuring instrument according to claim 3, characterized in that, The number of sliding components is at least two, and each sliding component is arranged at intervals along a direction parallel to the first axis.

5. The automatic pressure plate mechanism of the large-stroke image measuring instrument according to claim 3, characterized in that, The sliding component further includes a limiting block connected to the slider, and at least a portion of the limiting block is positioned closer to the substrate than the slider in the first direction.

6. The automatic pressure plate mechanism of the large-stroke image measuring instrument according to claim 3, characterized in that, The fixing base includes a first plate, a second plate, and a reinforcing rib. The plane where the first plate is located intersects the plane where the second plate is located, and the plane where the first plate is located is parallel to the first direction. The reinforcing ribs are connected to the first plate and the second plate, respectively.

7. The automatic pressure plate mechanism of the large-stroke image measuring instrument according to claim 1, characterized in that, The frame includes a first wall and a second wall that are parallel to and spaced apart from each other on a first axis, and two third walls that connect the first wall and the second wall. The first wall, the second wall, and the two third walls together form the installation space. The movable connector is connected to the first wall and is positioned along the direction from the first wall to the second wall. At least a portion of the third wall protrudes from the second wall.

8. The automatic pressure plate mechanism of the large-stroke image measuring instrument according to claim 7, characterized in that, The automatic pressure plate mechanism of the large-stroke image measuring instrument also includes a drive cylinder, one end of which is hinged to the frame and the other end of which is hinged to the platform.

9. The automatic pressure plate mechanism of the large-stroke image measuring instrument according to claim 8, characterized in that, The automatic pressure plate mechanism of the long-stroke imaging measuring instrument also includes a sensor, which is electrically connected to the drive cylinder and configured to send a stop signal to the drive cylinder when a foreign object is detected.

10. The automatic pressure plate mechanism of the large-stroke image measuring instrument according to claim 9, characterized in that, The sensor is disposed on the portion of the third wall that protrudes from the second wall.

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