Screen printing CCD camera alignment device

Abstract

The application relates to a silk screen printing CCD camera alignment device, which comprises a first support arranged on the outer side of a first direction of an alignment platform and an edge alignment module installed on the top of the first support and above the alignment platform, the edge alignment module is provided with six CCD cameras, and the device further comprises a second support arranged on the inner side of the first support close to the alignment platform and a hole alignment module installed on the second support, the hole alignment module is installed on the top of the second support and below the edge alignment module, and the hole alignment module is provided with a seventh CCD camera which can move along a second direction and can move along a first direction. The silk screen printing CCD camera alignment device adds the hole alignment module on the basis of the original edge alignment mode, and can realize accurate positioning of a hole printing object by taking the hole as a reference and adopting any one of the edge alignment modes of two edges, three edges and four edges.

Description

Technical Field

[0001] This application relates to screen printing technology, and more specifically, to a screen printing CCD camera alignment device. Background Technology

[0002] With the increasing maturity and development of screen printing technology, its application areas are constantly expanding. Screen printing is also widely used for glass covers in mobile phones and tablets. These substrates require extremely high printing precision, making accurate alignment before printing crucial. For examples of CCD alignment systems in various existing fully automatic screen printing machines, please refer to... Figure 1 As shown, regardless of Figure 1 The 3CCD system shown in (a) is still Figure 1 The 5CCD system shown in (b) or Figure 1 The 6CCD system shown in (c) uses edge alignment. For substrates with holes, such as mobile phone or tablet glass, accurate hole alignment is especially important. Edge alignment alone cannot guarantee alignment accuracy. Utility Model Content

[0003] The technical problem to be solved by this application is to provide a screen-printed CCD camera alignment device that aligns at least two sides based on a hole, in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by this application to solve its technical problem is as follows: a screen printing CCD camera alignment device is proposed, including a first bracket disposed on the outer side of the alignment platform in a first direction and an edge alignment module mounted on the top of the first bracket and located above the alignment platform. The edge alignment module is provided with six CCD cameras, including a first CCD camera, a second CCD camera, a third CCD camera, and a fourth CCD camera respectively disposed side by side along opposite sides in the first direction and movable in the first direction, and a fifth CCD camera and a sixth CCD camera respectively disposed on opposite sides in a second direction perpendicular to the first direction and movable in the second direction. The device also includes a second bracket and a hole alignment module mounted on the second bracket. The second bracket is disposed on the inner side of the first bracket near the alignment platform. The hole alignment module is mounted on the top of the second bracket and located below the edge alignment module. The hole alignment module is provided with a seventh CCD camera that can move in the second direction and can move in the first direction.

[0005] According to one embodiment of the screen printing CCD camera alignment device described in this application, the edge alignment module includes a mounting platform fixed to the top of a first bracket. The mounting platform has six vertically penetrating grooves, including a first groove, a second groove, a third groove, and a fourth groove arranged side by side along opposite sides in a first direction and extending along the first direction, and a fifth groove and a sixth groove arranged side by side along opposite sides in a second direction and extending along the second direction. The six CCD cameras are vertically arranged in the six grooves.

[0006] According to one embodiment of the screen printing CCD camera alignment device described in this application, the mounting platform is further provided with a lead screw extending along the extension direction of the slide groove on one side of each slide groove, a nut slider fitted on the lead screw, a drive motor for driving the lead screw to rotate, and a slide rail for guiding the nut slider to move along the lead screw. Each CCD camera is fixedly connected to the nut slider so that it can be driven by the nut slider to move along the corresponding slide groove.

[0007] According to one embodiment of the screen printing CCD camera alignment device described in this application, a sensing plate is provided on the side of each nut slider, and sensors cooperating with the sensing plate are respectively provided at both ends of the movement stroke of each nut slider on the mounting platform.

[0008] According to one embodiment of the screen-printed CCD camera alignment device described in this application, the first bracket includes two L-shaped first pillars spaced apart along a second direction, and the mounting platform is fixed to the lateral portion of the two L-shaped first pillars to be suspended above the alignment platform.

[0009] According to one embodiment of the screen printing CCD camera alignment device described in this application, the hole alignment module includes a first linear module extending in a second direction mounted on the top of a second bracket, a second linear module extending in a second direction mounted on a first slide of the first linear module, and a support frame fixed on the second slide of the second linear module. The seventh CCD camera is mounted on the support frame so that it moves along the second linear module with the second slide and along the first linear module with the first slide.

[0010] According to one embodiment of the screen printing CCD camera alignment device described in this application, the support frame includes a fixed plate fixed to a second slide, a first connecting plate extending downward from one side of the fixed plate in a second direction, and a third connecting plate extending from the lower end of the first connecting plate in a second direction below the second linear module, wherein the seventh CCD camera is mounted on the third connecting plate via a mounting base.

[0011] In one embodiment of the screen printing CCD camera alignment device according to this application, the seventh CCD camera is laterally disposed on the third connecting plate along the second direction, and a reflector is also provided on the third connecting plate facing the seventh CCD camera.

[0012] According to one embodiment of the screen printing CCD camera alignment device described in this application, the third connecting plate is provided with a plurality of mounting holes spaced apart along the second direction, and the mounting base of the seventh CCD camera is provided with an oblong hole extending along the second direction to cooperate with the plurality of mounting holes to achieve fine adjustment of the mounting position.

[0013] According to one embodiment of the screen-printed CCD camera alignment device described in this application, the second bracket includes two second pillars spaced apart along a second direction, and the first linear module is mounted across the top of the two second pillars.

[0014] The screen printing CCD camera alignment device of this application has the following beneficial effects: The screen printing CCD camera alignment device according to the embodiment of this application adds a hole alignment module on the basis of the original edge-gripping alignment method, and can achieve precise positioning of the perforated substrate by using the hole as a reference and adding any one of the two, three, and four edge-gripping alignment methods. Attached Figure Description

[0015] The present application will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of a CCD edge-grabbing alignment system in existing technology;

[0017] Figure 2 This is a schematic diagram of the structure of a screen-printed CCD camera alignment device according to an embodiment of this application;

[0018] Figure 3 yes Figure 2 The top view of the edge alignment module shown;

[0019] Figure 4 yes Figure 2 The diagram shows the structure of the hole alignment module.

[0020] Figure 5 yes Figure 4 A schematic diagram of the installation structure of the seventh CCD camera in the diagram.

[0021] Reference numerals: 1-Alignment platform; 2-Substrate; 100-Screen printing CCD camera alignment device; 10-First support; 11-First pillar; 20-Edge alignment module; 211-First CCD camera; 212-Second CCD camera; 213-Third CCD camera; 214-Fourth CCD camera; 215-Fifth CCD camera; 216-Sixth CCD camera; 22-Mounting platform; 221-First slide rail; 222-Second slide rail; 223-Third slide rail; 224-Fourth slide rail; 225-Fifth slide rail; 226-Sixth slide rail; 23-Lead screw; 24-Nut slide rail 25-Motor; 26-Slide rail; 27-Position sensor; 28-Sensing plate; 30-Second bracket; 31-Second support column; 40-Hole alignment module; 41-First linear module; 411-First motor; 412-First slide block; 413-First linear guide rail; 42-Second linear module; 421-Second motor; 422-Second slide block; 423-Second linear guide rail; 43-Support frame; 431-Fixing plate; 432-First connecting plate; 433-Second connecting plate; 434-Mounting hole; 44-Seventh CCD camera; 45-Mounting base; 451-Oval hole; 46-Reflector. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. Furthermore, the embodiments and features described herein can be combined with each other unless otherwise specified.

[0023] Figure 2 A schematic diagram of the structure of a screen-printed CCD camera alignment device 100 according to an embodiment of this application is shown. See also Figure 1 As shown, the screen printing CCD camera alignment device 100 mainly consists of a first bracket 10, an edge alignment module 20 mounted on the top of the first bracket 10, a second bracket 30, and a hole alignment module 40 mounted on the top of the second bracket 30. Both the edge alignment module 20 and the hole alignment module 40 are located above the alignment platform 1. The edge alignment module 20 is equipped with six CCD cameras, namely the first CCD camera 211, the second CCD camera 212, the third CCD camera 213, the fourth CCD camera 214, the fifth CCD camera 215, and the sixth CCD camera 216. The hole alignment module 40 is equipped with a seventh CCD camera 41. The combination of the two can be used to accurately position the substrate 2 on the alignment platform 1 using the hole as a reference and any one of the edge-grabbing alignment methods of two, three, or four sides.

[0024] See details Figure 2 Combination Figure 3As shown, the first support 10 includes a first direction (i.e., the alignment platform 1 is positioned in the alignment direction) of the alignment platform 1. Figure 2 On the outer side of the left and right directions and along the second direction (i.e. Figure 2 Two L-shaped first pillars 11 are spaced apart in the front-back direction. The alignment module 20 has a mounting platform 22 fixed to the horizontal part of the two L-shaped first pillars 11 to be suspended above the alignment platform 1. The mounting platform 22 has six vertically penetrating grooves 221-226, including a first groove 221, a second groove 222, a third groove 223, a fourth groove 224 arranged side by side along opposite sides in the first direction and extending along the first direction, and a fifth groove 225 and a sixth groove 226 arranged side by side along opposite sides in the second direction and extending along the second direction. A first CCD camera 211, a second CCD camera 212, a third CCD camera 213, a fourth CCD camera 214, a fifth CCD camera 215, and a sixth CCD camera 216 are vertically arranged in the six grooves 221-226. Furthermore, the mounting platform 22 is equipped with a lead screw 23, a nut slider 24, a drive motor 25, and a slide rail 26 on one side of each slide groove 221-226. The lead screw 23 extends along the extension direction of the slide groove and is rotatably supported on the mounting platform 22. The nut slider 24 is fitted onto the lead screw 23 and threadedly engaged with it. The drive motor 25 is coaxially connected to one end of the lead screw 23 to drive its rotation. The slide rail 26 is located below the lead screw 23 along its extension direction and slides with the nut slider 24 to guide its movement along the lead screw 23. Each CCD camera 211-216 is fixedly connected to its corresponding nut slider 24, allowing it to move along the corresponding slide groove 221-226 driven by the nut slider 24, thus adapting to different sizes of substrates 2 for edge gripping and alignment. See also Figure 3 As shown, each nut slider 24 has a sensor plate 28 on its side. The mounting platform 22 also has sensors 27 at both ends of the travel of each nut slider 24 to cooperate with the sensor plate 28 in order to control the travel of the nut slider 24.

[0025] See further Figure 2 Combination Figure 4As shown, the second bracket 30 is disposed on the inner side of the first bracket 10 near the alignment platform 1, and includes two second pillars 31 spaced apart along the second direction. The hole alignment module 40 is mounted on the top of the two second pillars 51 of the second bracket 31 and located below the edge alignment module 20, and includes a first linear module 41, a second linear module 42, a support frame 43, and a seventh CCD camera 44. The first linear module 41 extends along the second direction and spans the top of the two second pillars 31, and has a first motor 411, a first slide 412, a first linear guide rail 413, and corresponding transmission components (not visible in the figure). The first motor 411 drives the first slide 412 to move along the first linear guide rail 413. The second linear module 42 extends along the first direction and is mounted on the first slide 412, and has a second motor 421, a second slide 422, a second linear guide rail 423, and corresponding transmission components (not visible in the figure). The second motor 421 drives the second slide 422 to move along the second linear guide rail 423. The support frame 43 includes a fixed plate 431 fixed to the second slide 422, a first connecting plate 432 extending downward from one side of the fixed plate 431 in a second direction, and a third connecting plate 433 extending from the lower end of the first connecting plate 432 along the second direction below the second linear module 42. The seventh CCD camera 44 is mounted on the third connecting plate 433 via a mounting base 45, so that it can move along the second slide 422 along the second linear module 42 and simultaneously move along the first slide 412 along the first linear module 41, so that the position of the adjuster relative to the alignment platform 1 can be adapted to the position of the holes on different substrates 2. See also Figure 5 As shown, the seventh CCD camera 44 is horizontally positioned on the third connecting plate 433 along the second direction. A reflector 46 is also provided on the third connecting plate 433, directly opposite the seventh CCD camera 44, to redirect the optical path of the horizontally positioned seventh CCD camera 44 by 90 degrees to capture the aperture on the substrate 2 below it. The horizontal positioning of the seventh CCD camera minimizes the space occupied by the entire device above the alignment platform 1. See further details. Figure 5 As shown, the third connecting plate 433 is provided with a plurality of mounting holes 434 spaced apart along the second direction. The mounting base 45 of the seventh CCD camera 44 is provided with an oblong hole 451 extending along the second direction, which cooperates with the plurality of mounting holes 434 to achieve fine adjustment of the mounting position.

[0026] According to the above embodiments of this application, the screen printing CCD camera alignment device 100 adds a hole alignment module 40 to the edge-grabbing alignment method of 6 CCD cameras 211~216. The seventh CCD camera 44 of the hole alignment module 40 captures the holes on the substrate 2. The hole alignment module 40 can be used as a reference to achieve precise positioning of the perforated substrate by adding any one of the edge-grabbing alignment methods of two sides, three sides, and four sides.

[0027] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A screen printing CCD camera alignment device, comprising a first bracket disposed on the outer side of an alignment platform in a first direction and an edge alignment module mounted on the top of the first bracket and located above the alignment platform, the edge alignment module having six CCD cameras, including a first CCD camera, a second CCD camera, a third CCD camera, and a fourth CCD camera respectively arranged side-by-side on opposite sides along the first direction and movable along the first direction, and a fifth CCD camera and a sixth CCD camera respectively arranged on opposite sides along a second direction perpendicular to the first direction and movable along the second direction, characterized in that, It also includes a second bracket and a hole alignment module mounted on the second bracket. The second bracket is located on the inner side of the first bracket near the alignment platform. The hole alignment module is mounted on the top of the second bracket and located below the side alignment module. The hole alignment module is equipped with a seventh CCD camera that can move in a second direction and can move in a first direction.

2. The screen-printed CCD camera alignment device according to claim 1, characterized in that, The edge alignment module includes a mounting platform fixed to the top of the first bracket. The mounting platform has six vertically penetrating grooves, including a first groove, a second groove, a third groove, and a fourth groove arranged side by side along opposite sides of a first direction and extending along the first direction, and a fifth groove and a sixth groove arranged side by side along opposite sides of a second direction and extending along the second direction. The six CCD cameras are vertically arranged in the six grooves.

3. The screen-printed CCD camera alignment device according to claim 2, characterized in that, The mounting platform is also provided with a lead screw extending along the extension direction of the slide groove on one side of each slide groove, a nut slider fitted on the lead screw, a drive motor for driving the lead screw to rotate, and a slide rail for guiding the nut slider to move along the lead screw. Each CCD camera is fixedly connected to the nut slider so that it can move along the corresponding slide groove driven by the nut slider.

4. The screen-printed CCD camera alignment device according to claim 3, characterized in that, Each nut slider has a sensing plate on its side, and sensors that cooperate with the sensing plate are also provided at both ends of the travel stroke of each nut slider on the mounting platform.

5. The screen-printed CCD camera alignment device according to claim 4, characterized in that, The first support includes two L-shaped first pillars spaced apart along a second direction, and the mounting platform is fixed to the lateral portion of the two L-shaped first pillars to be suspended above the alignment platform.

6. The screen-printed CCD camera alignment device according to claim 1, characterized in that, The hole alignment module includes a first linear module extending in a second direction mounted on the top of the second bracket, a second linear module extending in the second direction mounted on a first slide of the first linear module, and a support frame fixed on the second slide of the second linear module. The seventh CCD camera is mounted on the support frame so that it moves along the second linear module with the second slide and along the first linear module with the first slide.

7. The screen-printed CCD camera alignment device according to claim 6, characterized in that, The support frame includes a fixed plate fixed to the second slide, a first connecting plate extending downward from one side of the fixed plate in a second direction, and a third connecting plate extending from the lower end of the first connecting plate in a second direction to the bottom of the second linear module. The seventh CCD camera is mounted on the third connecting plate via a mounting bracket.

8. The screen-printed CCD camera alignment device according to claim 7, characterized in that, The seventh CCD camera is horizontally mounted on the third connecting plate along the second direction, and a reflector is also provided on the third connecting plate facing the seventh CCD camera.

9. The screen-printed CCD camera alignment device according to claim 8, characterized in that, The third connecting plate is provided with a plurality of mounting holes spaced apart along the second direction, and the mounting base of the seventh CCD camera is provided with an oblong hole extending along the second direction to cooperate with the plurality of mounting holes to achieve fine adjustment of the mounting position.

10. The screen-printed CCD camera alignment device according to claim 9, characterized in that, The second support includes two second pillars spaced apart along a second direction, with the first linear module straddling the top of the two second pillars.

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