An alignment device for tablet plastic housing and screen assembly

Abstract

This utility model relates to the field of tablet computer assembly technology, and in particular to an alignment device for the plastic casing and screen assembly of a tablet computer. Due to the poor precision control of the plastic casing of tablet computers, problems such as misaligned bolt holes and misalignment of the plastic casing and screen assembly often occur during assembly. This utility model provides an alignment device for the plastic casing and screen assembly of a tablet computer, including a frame, an adsorption platform, a visual recognition component, a fork assembly, and a power component. The adsorption platform adsorbs and fixes the screen assembly through vacuum holes, the visual recognition component identifies misalignment information, and four forks are driven by motors to move the plastic casing to achieve alignment. This device solves the problems of misaligned bolt holes and edge misalignment during the assembly of the plastic casing and screen assembly, improves material utilization, reduces production costs, and extends equipment lifespan.

Description

Technical Field

[0001] This utility model relates to the field of tablet computer assembly technology, and in particular to an alignment device for a tablet computer plastic casing and screen assembly. Background Technology

[0002] Tablet computers are among the most frequently used electronic products. Currently, tablet casings are mainly divided into metal casings and plastic casings. While pursuing performance, consumers also have demands for personalization and cost-effectiveness. Some consumers prefer the tactile feel of plastic casings, while others choose the cheaper option due to price considerations. Plastic casings are generally produced using injection molding. Compared to metal casings produced by machining, plastic casings are significantly less precise in production and dimensional control. Therefore, even plastic casings from the same batch often exhibit dimensional differences. This can lead to misalignment of bolt holes and edges between the plastic casing and screen assembly during assembly, resulting in misalignment. Therefore, there is an urgent need for an alignment device for tablet computer plastic casings and screen assemblies to solve these problems. Utility Model Content

[0003] Based on this, it is necessary to address the above-mentioned shortcomings by providing an alignment device for plastic casing and screen assembly of a tablet computer, comprising: an adsorption platform, the adsorption platform being disposed on the upper surface of the frame, the adsorption platform having a placement position matching the product to be processed, the placement position having at least one vacuum hole, the vacuum hole being connected to a vacuuming device installed inside the frame;

[0004] A visual recognition component, comprising a plurality of lenses arranged around the placement position, the lenses being used to identify misalignment between the housing and the screen component and to obtain misalignment position information;

[0005] A fork assembly, comprising four forks for actuating the plastic housing, the four forks being arranged above the adsorption platform around the placement position, and the four forks being: a first fork located at the front side of the placement position, a second fork located at the rear side of the placement position, a third fork located at the left side of the placement position, and a fourth fork located at the right side of the placement position; and

[0006] The power assembly includes at least one motor disposed inside the frame, the motor being used to drive the shift fork to move and thereby shift the plastic housing, thereby aligning the plastic housing and the screen assembly.

[0007] Preferably, the adsorption platform further includes a suction cup, and the vacuum hole on the upper surface of the adsorption platform is recessed downward to form a groove, the suction cup is disposed in the groove, and the suction cup has an opening and is connected to the vacuum device.

[0008] Preferably, the number of suction cups is four, and the suction cups are evenly spaced and arranged in a rectangular array.

[0009] Preferably, the visual recognition component has 8 lenses, and 2 lenses are evenly spaced in the front, rear, left, and right areas of the placement position.

[0010] Preferably, the visual recognition component has 12 lenses, and three lenses are evenly spaced in the front, rear, left, and right areas of the placement position.

[0011] Preferably, each of the forks includes a fork arm parallel to the side adjacent to the placement position. The fork arm is driven by the power assembly to move along the extension direction of the fork arm. Each end of the fork arm is provided with a fork tip facing the placement position. The fork tip is provided with a lever for moving the plastic back cover.

[0012] Preferably, the fork arm is provided with a rack on the side away from the placement position, the adsorption platform is provided with a through hole at the position corresponding to the rack, and a gear is fixed on the power shaft of the motor, the gear extends out from the through hole and meshes with the rack.

[0013] Preferably, a speed reducer is provided between the gear and the rack, the input end of the speed reducer is connected to the gear drive, and the output end of the speed reducer is connected to the rack drive. The speed reducer is used to control the motor to drive the shift fork to move in a jogging manner.

[0014] Preferably, the fork moves 0.5 mm with each inching motion.

[0015] Preferably, the adsorption platform is provided with a slide rail on the surface of each of the four forks, and the four forks are slidably connected to the slide rail directly below them.

[0016] The aforementioned alignment device for plastic shells and screen components of tablet computers uses an adsorption platform to fix the screen component, a visual recognition component to locate misaligned positions, and a power component to drive four-way fork components to fine-tune the plastic shell. This effectively solves the problems of misaligned bolt holes and uneven edges when assembling the plastic shell and screen component, improves raw material utilization, reduces production costs, and extends the service life of the equipment. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an alignment device for a tablet computer plastic shell and screen assembly according to one embodiment of the present invention;

[0018] Figure 2This is a top view of an alignment device for a tablet computer plastic casing and screen assembly according to one embodiment of the present invention;

[0019] Figure 3 This is a three-dimensional structural diagram of the fork assembly and the power assembly of the alignment device for a tablet computer plastic shell and screen assembly in one embodiment of the present invention.

[0020] Explanation of reference numerals in the attached diagram: 100-frame, 200-adsorption platform, 200a-placement position, 200b-vacuum hole, 200c-groove, 200d-through hole, 210-suction cup, 300-visual recognition component, 310-lens, 400-shift fork assembly, 410-shift fork, 411-first shift fork, 412-second shift fork, 413-third shift fork, 414-fourth shift fork, 4101-fork arm, 4102-shift fork tip, 4103-shift block, 4104-rack, 500-power component, 510-motor, 520-gear. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model 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 utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0022] This utility model discloses an alignment device for a tablet computer's plastic casing and screen assembly, such as... Figures 1-3As shown, the device includes: a frame 100, an adsorption platform 200, a visual recognition component 300, a shift fork component 400, and a power component 500. The adsorption platform 200 is disposed on the upper surface of the frame 100. A placement position 200a matching the product to be processed is provided at the center of the adsorption platform 200. This invention is mainly used for tablet computers, so the placement position 200a is a rectangular plane with the same shape as a typical tablet computer. At least one vacuum hole 200b is provided on the placement position 200a. The vacuum hole 200b is connected to a vacuuming device installed inside the frame 100. The adsorption platform 200 is used to support other components of the alignment device. The placement position 200a on the adsorption platform 200 is used to support the screen assembly to be installed with the shell, with the front of the screen assembly facing down. A visual recognition component 300 is disposed around the placement position 200a, including several lenses 310 arranged around the placement position 200a. When aligning the plastic casing and screen assembly of the tablet computer, the lenses 310 are distributed at the bottom edge of the tablet computer according to the product size, and can clearly identify the misalignment of the plastic casing and screen assembly. A fork assembly 400 is disposed on the upper surface of the adsorption platform 200, specifically including four forks 410 arranged around the placement position: a first fork 411 located in front of the placement position 200a, a second fork 412 located behind the placement position 200a, a third fork 413 located to the left of the placement position 200a, and a fourth fork 414 located to the right of the placement position 200a. These four forks 410 are used to adjust the misalignment of the plastic casing and screen assembly from four directions. The power assembly 500 is located inside the frame 100 and mainly includes at least one motor 510 located inside the frame 100. In this embodiment, there are four motors 510. Each motor 510 drives a shift fork 410 to move, thereby controlling the shift fork 410 to push the plastic shell and screen assembly to align.

[0023] The process of using the alignment device for the plastic shell and screen assembly of a tablet computer provided by this utility model is as follows: First, place the screen assembly face down on the placement position 200a, and simultaneously cover the screen assembly with the plastic shell; Second, roughly push the plastic shell and screen assembly to fit snugly against the left and rear forks 410; Third, turn on the vacuum device to create a negative pressure between the screen assembly and the placement position 200a, using atmospheric pressure to adsorb the screen assembly onto the placement position 200a; Fourth, the visual recognition component 300 acquires image information and locates the position where the plastic shell is misaligned; Fifth, based on the position where the misalignment occurs, start the corresponding motor 510 to drive the corresponding fork 410 to push the misaligned plastic shell back to the correct position and align the bolt holes; Sixth, tighten the fixing bolts to complete the alignment of the plastic shell and screen assembly of the tablet computer.

[0024] This utility model provides an alignment device for plastic shells and screen components of tablet computers, comprising: a frame 100, an adsorption platform 200, a visual recognition component 300, a shift fork component 400, and a power component 500. The adsorption platform 200 fixes the screen component in a placement position. The visual recognition component 300 acquires the position information of any misalignment. Based on the misalignment position information, the corresponding power component 500 provides power to drive the shift fork component 400 to move the plastic component to the correct position. This achieves alignment between the screen component and the plastic shell, which has poor precision. It solves the problems of misalignment caused by misaligned bolt holes and misaligned edges of the plastic shell and screen component during assembly, effectively improving material utilization and reducing costs.

[0025] In one embodiment, such as Figure 1 , Figure 2 As shown, a groove 200c is formed by recessing the vacuum hole 200b on the upper surface of the adsorption platform 200, and a suction cup 210 is placed in the groove 200c. The suction cup 210 has an opening and is connected to the vacuum equipment in the frame 100, replacing the original method of direct adsorption through the flat vacuum hole 200b. In this embodiment, the suction cup 210 is made of an elastic material. When the vacuum equipment is activated, a negative pressure is formed inside the suction cup 210. The elastic material expands and deforms towards the screen assembly due to the pressure difference, tightly fitting the contour of the back of the screen. Compared with the original flat vacuum hole 200b, the elastic fit of the suction cup 210 can fill the tiny gaps between the screen assembly and the adsorption platform, reducing air leakage, thereby significantly enhancing the adsorption force and preventing the screen assembly from shifting due to weak adsorption during the alignment process. The suction cups 210 within the groove 200c can be adjusted in position or number according to the size of the screen assembly. The elastic material can adapt to non-planar structures such as the curvature and chamfers of the screen edges. The original vacuum holes 200b have concentrated suction force near the holes, making them less adaptable to uneven surfaces. In contrast, the suction cups 210, through deformation and adhesion, can evenly cover a larger area, ensuring stable adsorption of screen assemblies of different specifications. The original vacuum holes 200b are directly located on the surface of the adsorption platform, making them prone to clogging by debris and dust generated during processing, affecting the vacuum effect. The suction cups 210, covering the groove 200c, have an opening structure that allows for the deformation of the elastic material, reducing impurity accumulation, thereby lowering equipment maintenance frequency, extending service life, and ensuring the continuous effectiveness of the vacuum system.

[0026] Based on the previous embodiment, in this embodiment, as follows: Figure 1 , Figure 2As shown, four suction cups 210 are arranged evenly in a rectangular array. Tablet screens are mostly rectangular, with the four corners being areas of high structural strength. The rectangular array of four suction cups 210 ensures that the vacuum negative pressure acts evenly on the four key support points of the screen assembly, forming a symmetrical adsorption force field. Four-point adsorption utilizes the screen's own rigidity, preventing localized depressions in the central area caused by single-point adsorption. Traditional single-point or double-point adsorption can easily cause the screen assembly to tilt due to a shift in the center of gravity (such as corners lifting), affecting alignment accuracy. The four-point rectangular array disperses the adsorption force to the four corners, offsetting torques in all directions and ensuring the screen assembly remains horizontal. Furthermore, when the fork 410 pushes the plastic shell to adjust misalignment, the stable support points formed by the four suction cups resist horizontal thrust, preventing the screen assembly from moving synchronously with the plastic shell. This embodiment, with its four-point rectangular array of suction cups 210, effectively improves alignment accuracy and anti-interference capabilities.

[0027] In one embodiment, the visual recognition component 300 has eight lenses 310, with two lenses 310 evenly spaced at intervals in the front, rear, left, and right regions of the placement position 200a. When recognizing the edges of a tablet computer, there are significant blind spots between adjacent lenses 310. The layout of eight lenses 310 ensures that the field of view overlap rate of adjacent lenses 310 exceeds 30%, guaranteeing that edge features can be captured simultaneously by at least two lenses 310 at any location. Two lenses 310 in the same area can mutually verify the detection results. If one lens 310 misjudges due to factors such as dirt or reflection, the system can correct the error by comparing the data from the other lens 310. This effectively improves the completeness of edge feature recognition, reduces blind spots, enhances multi-angle stereo positioning capabilities, improves alignment accuracy, and reduces the misjudgment rate.

[0028] like Figure 1 , Figure 2 As shown, the number of lenses 310 in the visual recognition component 300 of the previous embodiment is changed to 12, with 3 lenses 310 evenly spaced in the front, rear, left, and right regions of the placement position. Compared to the previous embodiment, the layout of 12 lenses 310 increases the overlap rate of the field of view of adjacent lenses 310 to more than 50%, and each edge region is simultaneously covered by 3 lenses 310, forming triple detection redundancy. The edge feature detection integrity is improved from 98% to 99.9%, further improving the edge feature recognition integrity, reducing blind spots, enhancing multi-angle stereo positioning capabilities, improving alignment accuracy, and reducing the false judgment rate.

[0029] In one embodiment, such as Figures 1-3As shown, each fork 410 includes a fork arm 4101 parallel to the edge of the placement position 200a, driven by the power component 500 to move linearly along its own extension direction. Each end of the fork arm 4101 extends a fork tip 4102 pointing towards the placement position 200a. Each fork tip 4102 is equipped with a lever 4103, which is used to directly contact and actuate the edge of the plastic casing, achieving alignment between the tablet's plastic casing and the screen assembly. The fork arm 4101 is parallel to the edge of the placement position 200a, and its extension direction is orthogonal to the non-parallel edge of the tablet. When the power component 500 drives the fork arm 4101 to move along its own axial direction, the pushing direction is completely consistent with the edge of the casing, avoiding lateral force caused by angular deviation. Based on the positional information of the misalignment between the screen assembly and the plastic casing obtained by the visual recognition component 300, such as the misalignment of the upper left side of the tablet computer, i.e., the misalignment information is detected on the left rear left side of the placement position 200a, the motor 510 corresponding to the second fork 412 is activated. The motor 510 drives the second fork 412 to move to the right. At this time, the lever 4103 of the fork tip 4102 on the left side of the second fork 412 moves the upper left side of the tablet computer's plastic casing to the right to achieve alignment between the plastic casing and the screen assembly.

[0030] In one embodiment, such as Figures 1-3 As shown, a rack 4104 is machined on the back side of the fork arm 4101 (the side away from the placement position). A through hole 200d is opened at the corresponding position 200a of the adsorption platform 200. The gear 520 on the power shaft of the motor 510 passes through the through hole 200d and meshes with the rack 4104. When the motor 510 drives the gear 520 to rotate, the circular motion is converted into the linear motion of the fork arm 4101 through the inter-tooth force. The gear and rack transmission has a constant transmission ratio, which can achieve micron-level displacement control and meet the requirements of high-precision alignment.

[0031] Based on the previous embodiment, in one embodiment, a reducer is provided between the gear 520 and the rack 4104. The input end of the reducer is connected to the gear 520, and the output end of the reducer is connected to the rack 4104. The reducer is used to control the motor 510 to drive the shift fork 410 to move in a jogging manner. Adding a reducer between the gear 520 and the rack 4104 utilizes its speed reduction and torque amplification characteristics to convert the high-speed, low-torque motor 510 into a low-speed, high-torque motor. Combined with jogging control, the motor 510 drives the shift fork 410 in a short-pulse manner. In this embodiment, only a micro-step displacement of 0.5mm is generated each time, achieving closed-loop precise control of "detection-fine-tuning-re-detection". The reducer and jogging drive reduce errors and avoid the overshoot problem of traditional direct drive. Simultaneously, torque amplification improves thrust stability, reducing costs by using a low-power motor 510 and preventing housing deformation during pushing, thus improving yield.

[0032] In one embodiment, the adsorption platform 200 has a slide rail on each of the four forks 410 directly opposite its surface. The four forks 410 are slidably connected to the slide rail directly below them. Slide rails are also positioned on the adsorption platform 500 corresponding to the four forks 410, allowing the forks 410 to slide smoothly to the slide rails via sliders. The core principle is to utilize the linear guiding characteristics of the slide rails to constrain the movement trajectory of the forks, and to eliminate lateral offset during movement of the forks 410 through a rigid support structure. The low coefficient of friction of the slide rails also reduces wear on the forks 410 during displacement. Simultaneously, the load-bearing capacity of the slide rails disperses the reaction force during pushing, reducing localized wear on the adsorption platform, extending the equipment's service life, and saving maintenance costs.

[0033] The aforementioned alignment device for plastic casing and screen assembly of tablet computers uses an adsorption platform to fix the screen assembly, a visual recognition component to locate misaligned positions, and a power component to drive four-way fork components to fine-tune the plastic casing. This effectively solves the problems of misaligned bolt holes and uneven edges when assembling the plastic casing and screen assembly, improves raw material utilization, reduces costs, and extends the service life of the equipment.

[0034] 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.

[0035] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An alignment device for a tablet plastic housing and screen assembly, comprising: The rack (100) is characterized by comprising: An adsorption platform (200) is provided on the upper surface of the frame (100). The adsorption platform (200) is provided with a placement position (200a) that matches the product to be processed. The placement position (200a) is provided with at least one vacuum hole (200b). The vacuum hole (200b) is connected to a vacuuming device installed inside the frame (100). A visual recognition component (300) includes a plurality of lenses (310) arranged around the placement position (200a), the lenses (310) being used to identify misalignment between the plastic housing and the screen assembly and to obtain misalignment position information; A fork assembly (400) includes four forks (410) for actuating the plastic housing. The four forks (410) are arranged above the adsorption platform (200) around the placement position (200a). The four forks (410) are respectively: a first fork (411) located in front of the placement position (200a), a second fork (412) located behind the placement position (200a), a third fork (413) located to the left of the placement position (200a), and a fourth fork (414) located to the right of the placement position (200a); and The power assembly (500) includes at least one motor (510) disposed inside the frame (100), the motor (510) being used to drive the fork (410) to move and thus actuate the plastic housing, thereby aligning the plastic housing and the screen assembly.

2. The alignment device for a tablet plastic housing and screen assembly of claim 1, wherein, The adsorption platform (200) also includes a suction cup (210). The vacuum hole (200b) on the upper surface of the adsorption platform (200) is recessed downward to form a groove (200c). The suction cup (210) is located in the groove (200c). The suction cup (210) has an opening and is connected to the vacuum device.

3. An alignment device for a tablet plastic housing and screen assembly as claimed in claim 2, wherein, The number of suction cups (210) is 4, and the suction cups (210) are evenly spaced and form a rectangular array.

4. The alignment device for a tablet plastic housing and screen assembly of claim 1, wherein, The visual recognition component (300) has eight lenses (310), and two lenses (310) are evenly spaced in the front, rear, left and right regions of the placement position (200a).

5. The alignment device for a tablet plastic housing and screen assembly of claim 1, wherein, The visual recognition component (300) has 12 lenses (310), and the front, rear, left and right regions of the placement position (200a) are each evenly spaced with 3 lenses (310).

6. The alignment device for a tablet plastic housing and screen assembly of claim 1, wherein, Each of the forks (410) includes a fork arm (4101) parallel to the side adjacent to the placement position (200a). The fork arm (4101) is driven by the power assembly (500) to move along the extension direction of the fork arm (4101). Each end of the fork arm (4101) is provided with a fork tip (4102) facing the placement position (200a). The fork tip (4102) is provided with a paddle (4103) for actuating the plastic back cover.

7. An alignment device for a tablet plastic housing and screen assembly as claimed in claim 6, wherein, The fork arm (4101) is provided with a rack (4104) on the side away from the placement position (200a). The adsorption platform (200) is provided with a through hole (200d) at the position corresponding to the rack (4104). A gear (520) is fixed on the power shaft of the motor (510). The gear (520) extends out from the through hole (200d) and meshes with the rack (4104).

8. The alignment device for a tablet computer plastic casing and screen assembly according to claim 7, characterized in that, A speed reducer is provided between the gear (520) and the rack (4104). The input end of the speed reducer is connected to the gear (520) and the output end of the speed reducer is connected to the rack (4104). The speed reducer is used to control the motor (510) to drive the shift fork (410) to move in a jogging manner.

9. The alignment device for a tablet computer plastic casing and screen assembly according to claim 8, characterized in that, The shift fork (410) moves 0.5 mm with each jog.

10. The alignment device for a tablet computer plastic casing and screen assembly according to claim 6, characterized in that, The adsorption platform (200) has a slide rail on the surface of each of the four forks (410), and the four forks (410) are slidably connected to the slide rail directly below them.

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