Edge processing mechanism for display screen rubber frame forming

Abstract

The utility model discloses an edge processing mechanism is used in display screen glue frame forming, belongs to screen glue frame forming processing technical field, and is connected with the fixed frame between two connecting screw rods, and the fixed frame is connected with the support frame through the connecting rod, and the support frame is installed with servo motor in the frame, and the output of servo motor passes through the support frame, and is connected with first transmission roller, and the outer end of support frame is connected with second transmission roller, the lower end of support frame is connected with movable strip, and the free end of movable strip is connected with hydraulic cylinder between support frame, and hydraulic cylinder is connected with movable strip through the connector, and the inner end of movable strip is connected with movable seat. Track moving mechanism and polishing treatment system cooperation effect, realize polishing belt to display screen glue frame edge (straight edge, corner) whole process adhesion, even polishing, improve processing accuracy and consistency, adapt to the edge processing demand of different size, shape glue frame, improve equipment versatility and improve processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of screen frame forming technology, and in particular to an edge processing mechanism for screen frame forming. Background Technology

[0002] The main process for molding display screen frames is injection molding. Molten plastic (such as ABS, PC / ABS alloy, etc.) is injected into a precision mold cavity, held under pressure, cooled, and then demolded to form a frame blank with specific structures (such as snap-fits and positioning holes). The key lies in mold design (cavity precision, gate location optimization), injection parameter control (melt temperature 180-250℃, injection pressure 50-150MPa), and matching of raw material properties (meeting requirements for strength, heat resistance, and dimensional stability).

[0003] The edge processing mechanism eliminates burrs and flash on the molded frame, achieving smooth edges and precise dimensions. The positioning and clamping unit uses pneumatic clamps or vacuum suction cups to fix the frame, and a servo positioning system ensures consistent processing references with a repeatability accuracy of ±0.02mm. The processing execution unit integrates multi-axis linkage grinding components (grinding wheel / leaf wheel), laser cutting head, or ultrasonic deburring tools, switching tools for different edge features (such as straight edges and rounded corners), controlling roughness Ra≤0.8μm. The dust removal and cleaning unit uses a negative pressure dust collection device with an ion nozzle to simultaneously remove debris and static electricity, preventing surface contamination. The vision inspection unit uses a CCD camera and AI algorithm to collect edge contours in real time, compare them with a standard template, and provide feedback to adjust processing parameters (such as grinding depth and laser power) to ensure chamfer dimensional tolerances of ±0.05mm. The adaptive adjustment system uses a servo motor to drive the processing tool displacement, compatible with different frame sizes from 5-32 inches, with a changeover time of <3 minutes.

[0004] Currently, in edge processing mechanisms used for display screen frame forming, general grinding equipment has significant limitations when adjusting to the curvature of the frame. The curvature of the frame is a curved structure with varying radii and bending angles. Traditional grinding equipment often uses rigid connections or linear adjustment structures, resulting in insufficient flexibility in adjusting the grinding head's posture and making it difficult to match the dynamic curvature changes at the curvature in real time.

[0005] Insufficient contact between the grinding head and the curved surface can easily lead to localized missed areas, resulting in burrs. Alternatively, insufficient adjustment precision can cause uneven pressure between the grinding head and the curved surface, resulting in over-grinding in some areas, causing the frame to thin or even deform, while under-grinding in others fails to meet the design roughness requirements. Furthermore, for different frame sizes with varying curvature parameters (such as radius and angle), the equipment requires frequent manual calibration or tooling changes. This inefficient adjustment process is prone to human error, causing the grinding trajectory to deviate from the design curvature, resulting in dimensional deviations. Ultimately, this affects the consistency and precision of the frame edge treatment, reducing overall product quality. Contents of the Utility Model

[0006] The main purpose of the present utility model is to provide an edge processing mechanism for forming a display screen plastic frame, which can effectively solve the problems raised in the background art.

[0007] To achieve the above objectives, the technical solution adopted by the present utility model is as follows:

[0008] An edge processing mechanism for forming a display screen plastic frame, comprising an upper rail, a lower rail, steering vehicle bearing sliding seats and connecting screws, the upper rail and the lower rail are designed in parallel, the two steering vehicle bearing sliding seats are respectively disposed in the sliding grooves of the upper rail and the lower rail, and the connecting screws are disposed on the steering vehicle bearing sliding seats;

[0009] A fixing frame is connected between the two connecting screws, and the fixing frame is connected with a support frame through a connecting rod, a servo motor is installed inside the support frame, the output end of the servo motor passes through the support frame and is connected with a first transmission roller, and the outer end of the support frame is connected with a second transmission roller;

[0010] The lower end of the support frame is connected with a movable strip, and a hydraulic cylinder is connected between the free end of the movable strip and the support frame, the hydraulic cylinder and the movable strip are connected through a connector, the inner end of the movable strip is connected with a movable seat, a grinding belt is sleeved between the first transmission roller, the second transmission roller and the movable seat, and the edge of the formed display screen plastic frame is ground by the grinding belt.

[0011] As an optional solution of the present application, the top view of the upper rail and the lower rail is designed in an "L" shape, the corner radian of the upper rail and the lower rail is consistent with the corner curvature of the display screen plastic frame, and the length of the linear rails at both ends of the upper rail and the lower rail is consistent with the length of the straight edge of the plastic frame;

[0012] As an optional solution of the present application, a plurality of nuts are sleeved on the connecting screws, the two connecting screws are inserted into the screw holes of the fixing frame and fixed by the nuts on the connecting screws, round holes are opened at the four corners of the end faces of the fixing frame and the support frame, and the connecting rod passes through the round holes on the fixing frame and the support frame and is sleeved with nuts and anti-slip washers for fixing;

[0013] As an optional solution of the present application, the top view of the support frame is designed in a "square" shape, the support frame and the servo motor are installed and connected by bolts, a bearing is provided at the connection between the output end of the servo motor and the support frame, and the first transmission roller and the output end of the servo motor are connected by bolts;

[0014] As an optional solution of the present application, the first transmission roller, the second transmission roller and the movable seat form a square frame design, and the movable seat in the square frame adjusts the position through the hydraulic cylinder, so as to change the shape and tension of the grinding belt;

[0015] As an optional solution of this application, the movable seat and the movable bar are connected by a rotating shaft. The movable seat is provided with a movable sleeve for limiting the grinding belt. The tail end of the hydraulic cylinder is connected to the support frame by a rotating shaft. The connector is connected to the telescopic end of the hydraulic cylinder by bolts. The connector is connected to the movable bar by a rotating shaft. The movable bar and the support frame are connected by a rotating shaft.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The track-moving mechanism provides stable sliding guidance to ensure smooth movement; the "L"-shaped track design ensures that the trajectory precisely matches the shape of the rubber frame (straight edges and corners), guaranteeing full-process fit to processing requirements; the closed-loop control of the drive system achieves speed and positioning accuracy, improving movement accuracy.

[0018] The servo motor works in conjunction with the transmission roller to achieve smooth transmission and ensure uniform grinding; the adjustable transmission structure adjusts the belt wrap angle and tension through hydraulic cylinders to adapt to different processing requirements; the guide sleeve restricts the belt track to avoid deviation and improve grinding stability.

[0019] The track moving mechanism and the grinding system work together to ensure that the grinding belt fits the edges (straight edges and corners) of the display screen frame throughout the entire process and grinds them evenly, improving processing accuracy and consistency; it can adapt to the edge processing needs of frames of different sizes and shapes, improving equipment versatility and processing efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a top view of the overall structure of this utility model;

[0022] Figure 3 This is a front view of the overall structure of this utility model;

[0023] Figure 4 This is a diagram illustrating the support mechanism and grinding system of this utility model.

[0024] Figure 5 for Figure 1 Enlarged diagram of point A in the middle.

[0025] In the diagram: 1. Upper rail; 2. Steering car bearing slide; 3. Connecting screw; 4. Lower rail; 5. Fixing frame; 6. Support frame; 7. Connecting rod; 8. Servo motor; 9. First transmission roller; 10. Second transmission roller; 11. Grinding belt; 12. Movable bar; 13. Hydraulic cylinder; 14. Connector; 15. Movable seat. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] like Figure 1 - Figure 5 As shown, an edge processing mechanism for forming a display screen frame includes an upper rail 1, a lower rail 4, a steering wheel bearing slide 2, and a connecting screw 3. The upper rail 1 and the lower rail 4 are arranged in parallel, together forming a stable sliding guide structure. Two steering wheel bearing slides 2 are respectively embedded inside the upper rail 1 and the lower rail 4, and can move smoothly along the length of the rail. The connecting screw 3 is installed on the steering wheel bearing slide 2 and is used to connect and fix subsequent components.

[0028] A fixing frame 5 spans between two connecting screws 3, and the fixing frame 5 is connected to the support frame 6 via a connecting rod 7. A servo motor 8 is installed inside the support frame 6, and its output end passes through the support frame 6 and is connected to the first transmission roller 9 via a keyway. A second transmission roller 10 is assembled at the outer end of the support frame 6, and the two together form the transmission base.

[0029] A movable bar 12 is hinged to the lower part of the support frame 6. A hydraulic cylinder 13 is connected between the free end of the movable bar 12 and the support frame 6. The cylinder body of the hydraulic cylinder 13 is connected to the support frame 6 via a rotating shaft, and its piston rod end is hinged to the movable bar 12 via a connector 14. A movable seat 15 is further hinged to the inner end of the movable bar 12. The first transmission roller 9, the second transmission roller 10, and the movable seat 15 together form an approximately square transmission frame, which is covered with a wear-resistant grinding belt 11. This belt is used to uniformly grind the edges of the display screen frame.

[0030] The top view of the upper track 1 and lower track 4 forms an "L" shape, and the curvature of their corners is precisely calculated to perfectly match the curvature of the corners of the display screen frame to be processed. The lengths of the straight tracks at both ends are determined based on the straight edge dimensions of the frame, ensuring a seamless fit throughout the processing.

[0031] The connecting screw 3 is equipped with multiple sets of locking nuts, which can adjust the installation position and tightness of the fixing bracket 5. The fixing bracket 5 and the support bracket 6 are provided with round holes at the four corners, through which the connecting rod 7 is inserted and reliably fixed by adding nuts and anti-slip washers.

[0032] The support frame 6 has an overall "U"-shaped frame structure, which has high rigidity. The servo motor 8 is fixed to the inside of the support frame 6 with bolts, and a rolling bearing is installed at the contact point between its output shaft and the support frame 6 to ensure smooth transmission. The first transmission roller 9 is connected to the output shaft of the servo motor 8 through a flange, while the second transmission roller 10 is mounted on the outside of the support frame 6 through a bearing seat.

[0033] The first drive roller 9, the second drive roller 10, and the movable seat 15 together constitute an adjustable transmission structure. By pushing the movable bar 12 with the hydraulic cylinder 13, the movable seat 15 can be moved, thereby adjusting the wrap angle and tension of the grinding belt 11 to adapt to different processing requirements.

[0034] The movable seat 15 is rotatably connected to the movable bar 12 via a pin. A freely rotatable guide sleeve is provided on its upper part to limit the running trajectory of the grinding belt 11. The tail end of the hydraulic cylinder 13 is hinged to the support frame 6 via a pin, and the connector 14 is fixed to the piston rod end of the hydraulic cylinder 13 via bolts. The other end is hinged to the movable bar 12, forming a complete power transmission chain and enabling flexible adjustment of the tensioning mechanism.

[0035] The upper rail 1 and the lower rail 4 are arranged in parallel to form a sliding guide structure; two steering car bearing slides 2 are respectively embedded in the slides of the upper rail 1 and the lower rail 4; connecting screws 3 are installed on the steering car bearing slides 2, and the position is adjusted and fixed by the locking nut on the connecting screws 3.

[0036] The curved track guides the movement direction through a rigid track structure with a preset curvature. The track cross-section (such as I-shaped or T-shaped) cooperates with the moving parts to limit radial and axial displacement, ensuring that the moving parts slide or roll smoothly along the curved path. The material must be high-strength and wear-resistant, and the radius of curvature is designed according to the steering angle to ensure accurate trajectory. The steering car bearing slide 2 serves as a connecting support component between the steering car and the track. The built-in bearing (such as a deep groove ball bearing or a tapered roller bearing) converts sliding friction into rolling friction to reduce resistance. The contact surface between the slide and the track is machined with high precision. The outer ring of the bearing fits against the track, and the inner ring connects to the steering car. The rolling of the bearing enables the steering car to move flexibly along the track (including the curved section), while bearing vertical loads and lateral forces. Some parts include a clearance adjustment mechanism to compensate for installation errors. The drive system consists of a power source (servo motor 8, etc.), a transmission mechanism (gear rack, friction wheel, etc.) and a control system. The motor outputs torque through a reducer, which drives the transmission components (such as gears meshing with rail racks and friction wheels pressing against the rails), converting rotary motion into linear motion to move the steering car. The encoder provides feedback on position information, and the closed-loop control adjusts the motor speed and direction to achieve speed control and positioning accuracy.

[0037] A fixing frame 5 is bridging the two connecting screws 3. The fixing frame 5 is connected to the support frame 6 through a connecting rod 7 (the connecting rod 7 passes through the round holes at the four corners of the fixing frame 5 and the support frame 6, and is fixed with nuts and anti-slip washers); the servo motor 8 is fixed to the inside of the support frame 6 by bolts, and its output shaft passes through the support frame 6 (a rolling bearing is installed at the contact point), and is connected to the first transmission roller 9 (flange connection) through a keyway;

[0038] The second transmission roller 10 is assembled at the outer end of the support frame 6 via a bearing seat; the lower part of the support frame 6 is hinged to a movable bar 12, and the free end of the movable bar 12 is connected to the support frame 6 by a hydraulic cylinder 13 (the cylinder body is connected to the support frame 6 via a rotating shaft, and the piston rod end is hinged to the movable bar 12 via a connector 14, and the connector 14 is fixed to the piston rod end by bolts); the inner end of the movable bar 12 is hinged to a movable seat 15 via a pin (a guide sleeve is installed on the upper part of the movable seat 15); the first transmission roller 9, the second transmission roller 10 and the movable seat 15 form a square frame, and a grinding belt 11 is sleeved on the outside.

[0039] Adjust the installation position of the fixing bracket 5 by tightening the locking nut on the connecting screw 3 to ensure that the grinding mechanism is aligned with the display screen frame to be processed; start the servo motor 8 to drive the first transmission roller 9 to rotate, which drives the second transmission roller 10 and the guide sleeve on the movable seat 15 to move synchronously through the grinding belt 11; control the extension and retraction of the hydraulic cylinder 13 to push the movable bar 12 to rotate around the hinge point, drive the movable seat 15 to move, and adjust the wrap angle and tension of the grinding belt 11 to adapt to the processing requirements of the frame edge; after the display screen frame to be processed is fixed, the grinding system moves along the upper track 1 and the lower track 4, and grinds the frame edge evenly through the grinding belt 11.

[0040] Under the action of driving force, the steering car bearing slide 2 moves smoothly along the length of the upper rail 1 and the lower rail 4; the connecting screw 3 moves synchronously with the steering car bearing slide 2, driving the fixed frame 5, the connecting rod 7 and the support frame 6 to move; the support frame 6 drives the servo motor 8, the first transmission roller 9, the second transmission roller 10, the grinding belt 11, the movable bar 12, the hydraulic cylinder 13, the movable seat 15 and other components installed on it to move as a whole; during the movement, the arc of the "L" shaped corner of the upper rail 1 and the lower rail 4 matches the curvature of the corner of the rubber frame, and the length of the straight rails at both ends is adapted to the straight edge size of the rubber frame, ensuring that the grinding belt 11 fits the edge of the rubber frame throughout the grinding process.

[0041] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An edge processing mechanism for forming a display screen frame, comprising an upper track (1), a lower track (4), a steering wheel bearing slide (2), and a connecting screw (3), wherein the upper track (1) and the lower track (4) are designed in parallel, two steering wheel bearing slides (2) are respectively placed in the slides of the upper track (1) and the lower track (4), and the connecting screw (3) is placed on the steering wheel bearing slide (2), characterized in that: A fixing frame (5) is connected between the two connecting screw rods (3), and the fixing frame (5) is connected with a supporting frame (6) through a connecting rod (7). A servo motor (8) is installed inside the frame of the supporting frame (6), and the output end of the servo motor (8) penetrates through the supporting frame (6) and is connected with a first transmission roller (9). The outer end of the supporting frame (6) is connected with a second transmission roller (10); The lower end of the supporting frame (6) is connected with a movable strip (12), and a hydraulic cylinder (13) is connected between the free end of the movable strip (12) and the supporting frame (6). The hydraulic cylinder (13) and the movable strip (12) are connected through a connector (14). The inner end of the movable strip (12) is connected with a movable seat (15). A grinding belt (11) is sleeved between the first transmission roller (9), the second transmission roller (10) and the movable seat (15), and the formed edge of the display screen plastic frame is ground through the grinding belt (11).

2. The edge processing mechanism for forming a display screen frame according to claim 1, characterized in that: The top view of the upper rail (1) and the lower rail (4) is designed in an "L" shape, the corner radian of the upper rail (1) and the lower rail (4) is consistent with the corner curvature of the display screen plastic frame, and the length of the linear rails at both ends of the upper rail (1) and the lower rail (4) is consistent with the length of the straight edge of the plastic frame.

3. The edge processing mechanism for forming a display screen frame according to claim 2, characterized in that: A plurality of nuts are sleeved on the connecting screw rods (3), the two connecting screw rods (3) are inserted into the screw holes of the fixing frame (5) and fixed by the nuts on the connecting screw rods (3). Round holes are opened at the four corners of the end faces of the fixing frame (5) and the supporting frame (6), and the connecting rod (7) penetrates through the round holes on the fixing frame (5) and the supporting frame (6), and is sleeved with nuts and anti-slip washers for fixing.

4. The edge processing mechanism for forming a display screen frame according to claim 3, characterized in that: The top view of the supporting frame (6) is designed in a "square" shape, the supporting frame (6) and the servo motor (8) are installed and connected by bolts, a bearing is arranged at the connection between the output end of the servo motor (8) and the supporting frame (6), and the first transmission roller (9) is connected with the output end of the servo motor (8) by bolts.

5. The edge processing mechanism for forming a display screen frame according to claim 4, characterized in that: The first transmission roller (9), the second transmission roller (10) and the movable seat (15) form a square frame design. In the square frame, the position of the movable seat (15) is adjusted by the hydraulic cylinder (13), so as to change the shape and tension of the grinding belt (11).

6. The edge processing mechanism for forming a display screen frame according to claim 5, characterized in that: The movable seat (15) and the movable strip (12) are connected through a rotating shaft, and a movable sleeve is arranged on the movable seat (15) for limiting the grinding belt (11). The tail end of the hydraulic cylinder (13) is connected with the supporting frame (6) through a rotating shaft, the connector (14) is connected with the telescopic end of the hydraulic cylinder (13) through bolts, the connector (14) is connected with the movable strip (12) through a rotating shaft, and the movable strip (12) is connected with the supporting frame (6) through a rotating shaft.

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