CCD (Charge Coupled Device) mechanism and screen printing machine

Abstract

The invention relates to the technical field of screen printing machines, and discloses a CCD mechanism and a screen printing machine with the CCD mechanism, the CCD mechanism comprises a connecting plate, a camera, a mounting plate and a pointing assembly, and the connecting plate is used for being connected with a screen printing machine body; the camera is arranged on the connecting plate in a lifting manner, and a lens of the camera is arranged downwards; the mounting plate is arranged on the connecting plate, two clamping arms are arranged on the mounting plate, and grooves are formed in the opposite end faces of the two clamping arms; the pointing assembly comprises a shell and a spotlight arranged on the shell, the shell is spherical, the shell is clamped on the side walls of the two grooves, the shell can rotate on the side walls of the two grooves to change the orientation of the spotlight, and the spotlight is used for indicating the view field of the camera. The direction of the spotlight is adjusted, so that the light spot of the spotlight and the visual field of the camera coincide on the workpieces such as the PCB, under the indication of the light spot, the light spot can be easily irradiated on the mark point on the workpieces such as the PCB, the camera directly faces the mark point, and alignment of the CCD mechanism is completed.

Description

Technical Field

[0001] The invention relates to the technical field of screen printing machines, and in particular to a CCD mechanism and a screen printing machine. Background Art

[0002] The CCD mechanism of the screen printer is aligned automatically or manually. The CCD mechanism is usually located above the workbench, which is used to carry workpieces such as PCB boards. When CCD alignment is required, the operator can only judge the position of the CCD mechanism by feeling, which will result in a large error. The field of view of the high-precision CCD mechanism is only about 6mm. It is difficult to align the mark point of the PCB board within the field of view of the CCD by feeling, which requires multiple operations and is time-consuming. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a CCD mechanism that facilitates rapid alignment.

[0004] The present invention also provides a screen printing machine having the above CCD mechanism.

[0005] According to a first aspect of an embodiment of the present invention, a CCD mechanism includes a connecting plate, a camera, a mounting plate and a pointing assembly, wherein the connecting plate is used to be connected to a screen printing machine body; the camera can be raised and lowered on the connecting plate, and the lens of the camera is set downward; the mounting plate is provided on the connecting plate, and two clamping arms are provided on the mounting plate, and grooves are provided on the end surfaces facing each other of the two clamping arms; the pointing assembly includes a shell and a spotlight provided on the shell, the shell is spherical, and the shell is clamped on the side walls of the two grooves, and the shell can be rotated on the side walls of the two grooves to change the direction of the spotlight, and the spotlight is used to indicate the field of view of the camera.

[0006] At least the following beneficial effects are provided: since grooves are provided on the end surfaces facing each other of the two clamp arms, the shell is spherical and can rotate on the side walls of the two grooves, so that the direction of the spotlight can be adjusted. When aligning the camera and the mark points on the workpiece such as the PCB board, first turn on the spotlight, adjust the direction of the spotlight, so that the light spot of the spotlight and the field of view of the camera overlap on the workpiece such as the PCB board, and then move the entire CCD mechanism. Under the guidance of the light spot, it is easy to illuminate the light spot on the mark point on the workpiece such as the PCB board, so that the field of view of the camera and the mark point on the workpiece such as the PCB board overlap, thereby completing the alignment of the CCD mechanism, thereby determining the initial position information of the workpiece such as the PCB board, and achieving alignment conveniently and quickly.

[0007] According to some embodiments of the present invention, one of the clamp arms is rotatably connected to the mounting plate, and a rotation axis of one of the clamp arms coincides with a spherical center of the shell.

[0008] According to some embodiments of the present invention, one end of the other clamp arm is provided with the groove, and the other end of the other clamp arm is a threaded section, and the threaded section is threadedly connected to the mounting plate to adjust the two clamp arms to clamp or loosen the shell, and a locking piece is provided on the end of the threaded section extending outside the mounting plate, and the locking piece is used to lock the other clamp arm on the mounting plate.

[0009] According to some embodiments of the present invention, two mutually parallel supporting parts are provided on the mounting plate, the two clamping arms are respectively provided on the two supporting parts, and the end surfaces of the two clamping arms facing each other are both located between the two supporting parts.

[0010] According to some embodiments of the present invention, a fill light is further included, wherein the fill light is connected to the connecting board, and the fill light is used to fill light for an area on the PCB board facing the camera.

[0011] According to some embodiments of the present invention, the fill light is ring-shaped and is located directly below the camera.

[0012] According to some embodiments of the present invention, a slide plate and an adjustment rod are further included, wherein the camera is slidingly connected to the connecting plate via the slide plate, one of the connecting plate and the slide plate is rotatably connected to the adjustment rod, and the other is threadedly connected to the adjustment rod to adjust the height of the slide plate and the camera.

[0013] According to some embodiments of the present invention, the connecting plate is connected to the sliding plate via a sliding mechanism.

[0014] According to some embodiments of the present invention, a support plate is further included, one of the connecting plate and the support plate is provided with an oblong hole, and the other is provided with a fastener, the length direction of the oblong hole is the up and down direction, the fastener is passed through the oblong hole to fix the connecting plate and the support plate together, and the mounting plate is connected to the connecting plate through the support plate.

[0015] A screen printer according to a second aspect of the present invention comprises a CCD mechanism according to the first aspect of the present invention and a screen printer body, wherein the connecting plate is connected to the screen printer body.

[0016] At least the following beneficial effects are achieved: The screen printing machine has all the beneficial effects brought by the CCD mechanism of the above embodiment, which will not be described again.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 It is one of the structural schematic diagrams of an embodiment of the present invention; Figure 2 This is a second structural diagram of an embodiment of the present invention; Figure 3 It is a schematic structural diagram of a mounting plate, a clamping arm and a pointing assembly according to an embodiment of the present invention; Figure Number: Connecting plate 100; slide plate 110; adjusting rod 120; supporting plate 130; oblong hole 131; camera 200; mounting plate 300; clamping arm 400; groove 410; pointing assembly 500; housing 510; spotlight 520; locking member 600; fill light 700. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0022] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0023] Reference Figures 1 to 3The present invention discloses a CCD mechanism, including a connecting plate 100, a camera 200, a mounting plate 300 and a pointing assembly 500. The connecting plate 100 is used to be connected to a screen printing machine body; the camera 200 can be raised and lowered on the connecting plate 100, and the lens of the camera 200 is set downward; the mounting plate 300 is arranged on the connecting plate 100, and two clamping arms 400 are arranged on the mounting plate 300, and grooves 410 are arranged on the facing end surfaces of the two clamping arms 400; the pointing assembly 500 includes a shell 510 and a spotlight 520 arranged on the shell 510, the shell 510 is spherical, and the shell 510 is clamped on the side walls of the two grooves 410, and the shell 510 can be rotated on the side walls of the two grooves 410 to change the direction of the spotlight 520, and the spotlight 520 is used to indicate the field of view of the camera 200.

[0024] Since grooves 410 are provided on the facing end surfaces of the two clamping arms 400, and the shell 510 is spherical, the shell 510 can rotate on the side walls of the two grooves 410, so that the direction of the spotlight 520 can be adjusted. When aligning the camera 200 and the mark points on the workpiece such as the PCB board, first turn on the spotlight 520, adjust the direction of the spotlight 520, so that the light spot of the spotlight 520 and the field of view of the camera 200 overlap on the workpiece such as the PCB board, and then move the entire CCD mechanism. Under the guidance of the light spot, it is easy to illuminate the light spot on the mark point on the workpiece such as the PCB board, so that the field of view of the camera 200 and the mark point on the workpiece such as the PCB board overlap, thereby completing the alignment of the CCD mechanism, thereby determining the initial position information of the workpiece such as the PCB board, and realizing the alignment conveniently and quickly.

[0025] It is conceivable that the spotlight 520 can be a laser pen or a laser light. The groove 410 and the outer wall of the housing 510 can move relative to each other, which is convenient for rotating the housing 510 and adjusting the direction of the spotlight 520. The inner wall of the groove 410 is spherical, and the inner wall of the groove 410 fits the outer wall of the housing 510, which is convenient for the housing 510 to rotate between the inner walls of the two grooves 410 and ensures that the inner walls of the two grooves 410 clamp the housing 510.

[0026] Reference Figure 3 In some embodiments, a clamp arm 400 can be rotatably connected to the mounting plate 300, and the rotation axis of a clamp arm 400 coincides with the center of the shell 510, and a clamp arm 400 and the shell 510 can rotate synchronously to facilitate rotation to the shell 510 and the spotlight 520.

[0027] It is understandable that the inner wall of the groove 410 of one clamp arm 400 is spherical, the groove 410 of one clamp arm 400 has a rotation center, and the rotation axis of one clamp arm 400 coincides with the rotation center of the groove 410 of one clamp arm 400 .

[0028] Reference Figure 3 In some embodiments, one end of the other clamp arm 400 is provided with a groove 410, and the other end of the other clamp arm 400 is threadedly connected to the mounting plate 300 to adjust the two clamp arms 400 to clamp or release the housing 510. By rotating the other clamp arm 400, the position of the other clamp arm 400 can be changed, and then the distance between the two clamp arms 400 can be changed. When the distance between the two clamp arms 400 increases, the housing 510 can be removed from between the side walls of the two grooves 410; when the distance between the two clamp arms 400 decreases, the housing 510 can be placed between the side walls of the two grooves 410. As the distance between the two clamp arms 400 continues to decrease, the side walls of the two grooves 410 will clamp the housing 510; when the housing 510 and the spotlight 520 need to be rotated, the distance between the two clamp arms 400 can be increased a little. After the spotlight 520 is adjusted to a suitable angle, the distance between the two clamp arms 400 can be reduced again to completely fix the housing 510 and the spotlight 520.

[0029] It can be imagined that the other end of the other clamp arm 400 is a threaded section, a threaded hole is provided on the mounting plate 300, the threaded section cooperates with the side wall of the threaded hole, and the central axis of the threaded section coincides with the rotation axis of one clamp arm 400. The inner wall of the groove 410 of the other clamp arm 400 is also spherical, and the groove 410 of the other clamp arm 400 also has a rotation center, and the rotation axis of the other clamp arm 400 coincides with the rotation center of the groove 410 of the leading clamp arm 400.

[0030] A locking member 600 is provided on the end of the threaded section extending outside the mounting plate 300. The locking member 600 is used to lock the other clamp arm 400 on the mounting plate 300. After the other clamp arm 400 is locked on the mounting plate 300, the distance between the two clamp arms 400 can be fixed.

[0031] The locking member 600 is a hexagonal nut with a flange.

[0032] Reference Figure 3 In some of the embodiments, two supporting parts parallel to each other are provided on the mounting plate 300, two clamping arms 400 are respectively provided on the two supporting parts, and the end surfaces of the two clamping arms 400 facing each other are both located between the two supporting parts.

[0033] Reference Figure 1 and Figure 2 In some of the embodiments, the CCD mechanism also includes a fill light 700, which is connected to the connecting plate 100. The fill light 700 is used to fill light to the area on the PCB board facing the camera 200 so that the camera 200 can focus and clearly capture the image of the PCB board.

[0034] In some of the embodiments, the fill light 700 is in a ring shape and is located directly below the camera 200. The ring fill light 700 can form a circular light spot with a larger area, thereby illuminating the area photographed by the camera 200 and its surroundings, providing sufficient brightness.

[0035] A light-transmitting hole is formed in the middle of the fill light 700 . After the light emitted by the fill light 700 shines on a workpiece such as a PCB board, the light passes through the light-transmitting hole after being emitted and finally enters the camera 200 .

[0036] Reference Figure 1 In some embodiments, the CCD mechanism further includes a slide plate 110 and an adjustment rod 120, and the camera 200 is slidably connected to the connecting plate 100 through the slide plate 110. One of the connecting plate 100 and the slide plate 110 can be rotatably connected to the adjustment rod 120, and the other is threadedly connected to the adjustment rod 120 to adjust the height of the slide plate 110 and the camera 200. The slide plate 110 and the camera 200 are driven to rise and fall by rotating the adjustment rod 120, and the camera 200 can be raised and lowered, which is convenient for adjusting the focus of the camera 200, and ensuring that the camera 200 can capture a clear image of a workpiece such as a PCB board.

[0037] In some embodiments, the connecting plate 100 is connected to the sliding plate 110 via a sliding mechanism. The sliding mechanism includes a guide rail and a guide block that cooperate with each other. The guide rail is arranged on the connecting plate 100, and the length direction of the guide rail is the up-down direction. The guide block is connected to the sliding plate 110.

[0038] Reference Figure 1 In this embodiment, an ear plate is provided on the connecting plate 100, and the ear plate is located below the slide plate 110. The ear plate and the slide plate 110 are parallel to each other. The adjusting rod 120 is connected to the ear plate through a bearing. The length direction of the adjusting rod 120 is the up and down direction, and the upper end of the adjusting rod 120 is threadedly connected to the slide plate 110.

[0039] The adjusting rod 120 is a screw rod, the middle section of which is connected to the ear plate through a bearing, the upper end of the screw rod extends above the ear plate and is threadedly connected to the slide plate 110, the lower end of the screw rod is below the ear plate, and a rotary handle is provided at the lower end of the screw rod.

[0040] Reference Figure 2 In some of the embodiments, the CCD mechanism further includes a support plate 130, one of the connecting plate 100 and the support plate 130 is provided with an oblong hole 131, and the other is provided with a fastener, the length direction of the oblong hole 131 is the up and down direction, the fastener is passed through the oblong hole 131 to fix the connecting plate 100 and the support plate 130 together, and the mounting plate 300 is connected to the connecting plate 100 through the support plate 130.

[0041] By tightening the fastener, the fastener presses the support plate 130 tightly against the connecting plate 100, thereby fixing the support plate 130 on the connecting plate 100. By loosening the fastener, the fastener can be located at different positions of the oblong hole 131, that is, the height position of the support plate 130 can be adjusted, and then the height positions of the mounting plate 300, the clamp arm 400, the housing 510 and the spotlight 520 can be adjusted.

[0042] In this embodiment, the oblong hole 131 is provided on the support plate 130, and the fastener is passed through the oblong hole 131 and is threadedly connected to the connecting plate 100. The fastener is a screw or a bolt.

[0043] It can be understood that the fill light 700 is connected to the connecting plate 100 through the support plate 130, that is, the installation height of the fill light 700 is adjustable, and the distance between the fill light 700 and workpieces such as PCB boards is adjusted to avoid interference between the fill light 700 and workpieces such as PCB boards or other components of the screen printing machine, while also allowing the fill light 700 to maximize the illumination effect.

[0044] The present invention discloses a screen printer, comprising a screen printer body and the above-mentioned CCD mechanism, wherein a connecting plate 100 is connected to the screen printer body.

[0045] The screen printing machine has all the beneficial effects brought by the CCD mechanism of the above embodiment, which will not be described again.

[0046] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, 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.

[0047] Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A CCD mechanism, characterized in that: include: A connecting plate (100) is used to connect to a screen printing machine body; A camera (200) is arranged on the connecting plate (100) in a liftable manner, and the lens of the camera (200) is arranged to face downwards; A mounting plate (300) is disposed on the connecting plate (100); two clamping arms (400) are disposed on the mounting plate (300); and grooves (410) are disposed on the facing end surfaces of the two clamping arms (400); A pointing component (500) comprises a shell (510) and a spotlight (520) arranged on the shell (510); the shell (510) is spherical and is clamped between the side walls of two grooves (410); the shell (510) rotates on the side walls of the two grooves (410) to change the direction of the spotlight (520); and the spotlight (520) is used to indicate the field of view of the camera (200).

2. A CCD mechanism according to claim 1, characterized in that: One of the clamp arms (400) is rotatably connected to the mounting plate (300), and the rotation axis of one of the clamp arms (400) coincides with the spherical center of the housing (510).

3. A CCD mechanism according to claim 2, characterized in that: One end of the other clamp arm (400) is provided with the groove (410), and the other end of the other clamp arm (400) is a threaded section, and the threaded section is threadedly connected to the mounting plate (300) to adjust the two clamp arms (400) to clamp or release the housing (510), and a locking piece (600) is provided on the end of the threaded section extending outside the mounting plate (300), and the locking piece (600) is used to lock the other clamp arm (400) on the mounting plate (300).

4. A CCD mechanism according to any one of claims 1 to 3, characterized in that: The mounting plate (300) is provided with two mutually parallel supporting parts, the two clamping arms (400) are respectively provided on the two supporting parts, and the facing end surfaces of the two clamping arms (400) are both located between the two supporting parts.

5. A CCD mechanism according to claim 1, characterized in that: It also includes a fill light (700), the fill light (700) being connected to the connecting plate (100), and the fill light (700) being used to fill light to an area on the PCB board facing the camera (200).

6. A CCD mechanism according to claim 5, characterized in that: The fill light (700) is in the shape of a ring, and is located directly below the camera (200).

7. A CCD mechanism according to claim 1, characterized in that: It also includes a slide plate (110) and an adjustment rod (120), the camera (200) being slidably connected to the connecting plate (100) via the slide plate (110), one of the connecting plate (100) and the slide plate (110) being rotatably connected to the adjustment rod (120), and the other being threadably connected to the adjustment rod (120) to adjust the height of the slide plate (110) and the camera (200).

8. A CCD mechanism according to claim 7, characterized in that: The connecting plate (100) is connected to the sliding plate (110) via a sliding mechanism.

9. A CCD mechanism according to claim 1, characterized in that: It also includes a support plate (130), one of the connecting plate (100) and the support plate (130) is provided with an oblong hole (131), and the other is provided with a fastener, the length direction of the oblong hole (131) is the up-down direction, the fastener is passed through the oblong hole (131) to fix the connecting plate (100) and the support plate (130) together, and the mounting plate (300) is connected to the connecting plate (100) via the support plate (130).

10. Screen printing machine, characterized in that, It comprises a screen printing machine body and a CCD mechanism according to any one of claims 1 to 9, wherein the connecting plate (100) is connected to the screen printing machine body.

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