An apparatus for a light guide plate side stamping process
Patent Information
- Application Number
- CN202611220149.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-08-12
- Publication Date
- 2026-09-15
Smart Images
Figure CN122747469A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of hot stamping machine technology, and specifically to a device for hot stamping process on the side of a light guide plate. Background Technology
[0002] Light guide plates typically require the transfer of corresponding functional foil layers onto their sides, depending on the product structure or usage requirements. During the hot stamping process, the hot stamping foil needs to be positioned between the heated hot stamping plate and the side of the light guide plate, and the hot stamping plate applies pressure to the side of the light guide plate to adhere the transfer layer on the hot stamping foil to the side of the light guide plate.
[0003] Some existing hot stamping machines for light guide plates can only process one side of the light guide plate at a time. After completing the hot stamping on one side, the light guide plate needs to be released from its fixation, and then manually or by other handling mechanisms to flip the light guide plate and reposition and clamp it. Multiple sides of the light guide plate need to undergo multiple releases, flips, and repositionings, which not only prolongs the processing time but also makes it easy for positioning errors to accumulate, making it difficult to maintain consistent hot stamping positions on different sides.
[0004] Although some equipment has hot stamping structures on both sides of the light guide plate, the positions or angles of the two structures are usually relatively fixed. When the light guide plate has parallelism errors between the two opposite sides due to cutting, grinding, or forming errors, the fixed hot stamping plate cannot keep parallel to both sides at the same time. This can easily lead to one end of the hot stamping plate contacting the light guide plate first, while the other end still has a gap. With continued pressure application, the pressure on different positions on the side of the light guide plate is uneven, which may cause insufficient local transfer, discontinuous hot stamping layers, or excessive pressure in some areas.
[0005] Furthermore, after the light guide plate has been hot-stamped on two opposite sides, it usually requires processing on a third or other side. Existing equipment often requires re-clamping and adjusting the orientation of the light guide plate, making it difficult to directly complete the reversal while keeping the light guide plate clamped. At the same time, the hot-stamping foil may also become loose, shifted, or wrinkled due to tension changes during continuous transport, further affecting the hot-stamping position and the integrity of the transfer layer.
[0006] To address the aforementioned problems, this invention provides an apparatus for hot stamping on the side of a light guide plate. Summary of the Invention
[0007] To address the aforementioned technical shortcomings, the purpose of this invention is to provide an apparatus for hot stamping on the sides of a light guide plate. This apparatus completes the positioning, conveying, turning, and multi-side hot stamping of the light guide plate in a single clamping process. Furthermore, it adjusts the hot stamping angle according to the actual direction of the light guide plate's sides, thereby reducing positioning errors caused by repeated clamping and improving hot stamping efficiency, adaptability, and uniformity.
[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides an apparatus for hot stamping process on the side of a light guide plate, comprising: frame; A positioning mechanism, which is mounted on the frame, is used to position the light guide plate to be hot-stamped; Two hot stamping mechanisms are respectively arranged on opposite sides of the light guide plate, and are used to move towards each other and hot stamp the two opposite sides of the light guide plate. The hot stamping mechanism located on one side of the positioning mechanism is the positioning side hot stamping mechanism, and the other hot stamping mechanism is the feeding side hot stamping mechanism. The feeding side hot stamping mechanism can adjust the hot stamping angle according to the direction of the side of the light guide plate. The gantry mechanism is movably mounted on the frame and is used to clamp the light guide plate and drive the light guide plate to move between the positioning station and the hot stamping station. It can also drive the light guide plate to rotate while keeping the light guide plate clamped, so that different sides of the light guide plate correspond to the positioning side hot stamping mechanism or the feeding side hot stamping mechanism in sequence. A control component is connected to a positioning mechanism, a positioning-side hot stamping mechanism, a feeding-side hot stamping mechanism, and a gantry mechanism, respectively, and is used to control the coordinated action of each mechanism to complete hot stamping on multiple sides during a single clamping process of the light guide plate.
[0009] Preferably, the positioning mechanism includes: A positioning substrate having two mutually perpendicular positioning surfaces for respectively abutting against two adjacent sides of the light guide plate; A positioning slide rail, wherein the positioning base plate is slidably mounted on the positioning slide rail; A positioning lead screw, which is connected to the positioning base plate in a driving manner; A positioning drive component is connected to a positioning lead screw and is used to drive the positioning lead screw to rotate, so that the positioning substrate moves along the positioning slide rail toward or away from the light guide plate.
[0010] Preferably, the hot stamping mechanism includes: Hot stamping plate; Mounting base, the mounting base is slidably mounted on the support base via a slide rail, and a hot stamping screw is rotatably mounted on the lower side of the mounting base. The hot stamping screw is threadedly connected to the support base mounted on the frame, and the hot stamping screw is connected to the output shaft of the hot stamping motor on the mounting base via a synchronous belt, which is used to drive the hot stamping plate to move towards or away from the side of the light guide plate. A support plate is fixedly installed on the upper side of the end of the mounting base facing the center of the frame. A sliding plate is slidably installed on the side of the support plate facing the center of the frame along its own height direction. The hot stamping plate is fixedly installed on the sliding plate, and the sliding plate is driven by the hot stamping push rod installed on the mounting base to adjust the height of the hot stamping plate relative to the light guide plate. Multiple heating tubes are installed at intervals within the hot stamping plate along its length. A hot stamping foil conveying assembly is used to pass the hot stamping foil between the hot stamping plate and the side of the light guide plate.
[0011] Preferably, the hot stamping foil conveying assembly includes: An unwinding section for mounting unused rolls of hot stamping foil; A winding section, which is used to pull and wind up the hot stamping foil after the transfer is completed; Two tension adjustment sections are provided for adjusting the tension of the hot stamping foil during the conveying process. The unwinding section and the rewinding section are respectively installed on both sides of the mounting base, and the two tension adjustment sections are respectively installed at both ends of the support plate. The hot stamping foil is led out from the unwinding section, passes around the two tension adjustment sections and the hot stamping plate, and is connected to the rewinding section after passing towards the light guide plate.
[0012] Preferably, the tension adjusting part includes: Tensioning support plate, wherein the tensioning support plate is fixedly installed on the support plate; The base rod has a waist-shaped through groove. A fastening bolt is installed on the tensioning support plate, and the fastening bolt passes through the waist-shaped through groove on the base rod and is connected to the tensioning support plate to install the base rod on the tensioning support plate. Two tensioning wheels are rotatably installed on the base rod.
[0013] Preferably, the support base in the feeding-side hot stamping mechanism is mounted on the frame via an angle adjustment assembly, the angle adjustment assembly comprising: Rotary support component; the support seat in the hot stamping mechanism on the feeding side is rotatably connected to the frame through the rotating support component. A follow-up adjustment plate, which is connected to the support seat in the hot stamping mechanism on the feeding side; A cam follower, wherein the cam follower is movably coupled with a follower adjustment plate; An adjusting screw, wherein the adjusting screw is connected to the cam follower via a transmission. An adjustment drive is used to drive the adjustment screw to rotate, so that the cam follower pushes the follower adjustment plate and drives the hot stamping mechanism on the feeding side to rotate relative to the frame, so as to adjust the angle between the hot stamping plate of the hot stamping mechanism on the feeding side and the side of the light guide plate.
[0014] Preferably, the rotating support is a cross roller bearing, and the hot stamping mechanism on the feeding side can swing within a preset angle range under the drive of the adjusting drive to compensate for the parallelism error between the two opposite sides of the light guide plate, so that the hot stamping plate of the hot stamping mechanism on the feeding side remains parallel to the corresponding side of the light guide plate.
[0015] Preferably, the gantry mechanism includes: A spindle slide is slidably mounted on a frame and connected to a timing belt. The timing belt is wound around timing pulleys located at both ends of the frame, one of which is driven by a gantry motor mounted on the frame. A light guide plate support base is mounted on the main shaft slide. The gantry frame is fixedly mounted on the main spindle slide. A downward pressing cylinder, which is mounted on the gantry frame; The clamping part is rotatably connected to the output rod of the pressing cylinder; The light guide plate support base is located below the clamping part, and the pressing cylinder is used to drive the clamping part to move towards the light guide plate support base so as to clamp the light guide plate between the clamping part and the light guide plate support base.
[0016] Preferably, the gantry mechanism further includes a hollow rotating platform and a rotary drive motor. The light guide plate support base is mounted on the main shaft slide via the hollow rotating platform. The rotary drive motor is fixedly mounted on the main shaft slide and is connected to the hollow rotating platform for transmission. It is used to drive the hollow rotating platform to rotate the clamped light guide plate around the vertical axis. After the light guide plate completes the hot stamping on two opposite sides, the third side of the light guide plate is rotated to the position corresponding to the hot stamping mechanism on the feeding side.
[0017] Preferably, an adapter shaft is fixedly installed on the output rod of the pressing cylinder, the adapter shaft is connected to the pressing shaft through an angular contact bearing, and the pressing shaft is fixedly connected to the clamping part.
[0018] The beneficial effects of this invention are as follows: This invention uses a positioning mechanism to initially position the light guide plate, and then a gantry mechanism clamps the light guide plate and transports it to the hot stamping station, enabling two hot stamping mechanisms to hot stamp two opposite sides of the light guide plate. After hot stamping is completed on the two opposite sides, a hollow rotating platform drives the light guide plate to rotate without releasing the clamp, so that the third side of the light guide plate rotates to the corresponding hot stamping position. This avoids the need for repeated release, manual flipping, and repositioning of the light guide plate during hot stamping on different sides, and enables continuous hot stamping of multiple sides of the light guide plate in one clamping, improving hot stamping efficiency and reducing the cumulative error caused by multiple positioning.
[0019] This invention uses an angle adjustment component to drive the hot stamping mechanism on the feeding side to rotate relative to the frame, enabling the hot stamping plate of the hot stamping mechanism on the feeding side to adjust its angle according to the actual direction of the corresponding light guide plate side. When there is a parallelism error between the two opposite sides of the light guide plate, the hot stamping plate can still maintain basic parallelism with the corresponding side, making the hot stamping pressure more evenly distributed along the side of the light guide plate, reducing the situation of insufficient local transfer, discontinuous hot stamping layer, and excessive local pressure, and improving the equipment's adaptability to different light guide plate processing errors and the hot stamping quality. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention (first perspective).
[0022] Figure 2 This is a schematic diagram of the overall structure of the present invention (second perspective).
[0023] Figure 3 This is a schematic diagram of the gantry frame structure of the present invention.
[0024] Figure 4 This is a schematic diagram of the mounting base and support plate of the present invention.
[0025] Figure 5 This is a schematic diagram of the structure of the support base and rotating support component of the present invention.
[0026] Figure 6 This is a schematic diagram of the mounting base and hot stamping screw of the present invention.
[0027] Figure 7 This is a schematic diagram of the clamping part and the pressing cylinder of the present invention.
[0028] Figure 8 This is a schematic diagram of the installation of the rotary drive motor of the present invention.
[0029] Figure 9 This is a schematic diagram of the hot stamping plate of the present invention.
[0030] Figure 10 This is a cross-sectional view of the adapter shaft and the pressing shaft of the present invention.
[0031] Figure 11 This is a schematic diagram of the positioning substrate of the present invention.
[0032] Figure 12This is a schematic diagram showing the connection between the positioning base plate and the positioning lead screw of the present invention.
[0033] Explanation of reference numerals in the attached figures: 1. Frame, 2. Positioning base plate, 3. Positioning slide rail, 4. Positioning lead screw, 5. Positioning drive component, 6. Hot stamping plate, 7. Mounting base, 8. Hot stamping lead screw, 9. Support base, 10. Hot stamping motor, 11. Support plate, 12. Hot stamping push rod, 13. Heating tube, 14. Unwinding section, 15. Rewinding section, 16. Tensioning support plate, 17. Bottom rod, 18. Tensioning wheel, 19. Rotating support component, 20. Follower adjustment plate, 21. Cam follower, 22. Adjusting lead screw, 23. Adjusting drive component, 24. Main spindle slide, 25. Synchronous belt, 26. Gantry motor, 27. Light guide plate support base, 28. Gantry frame, 29. Pressing cylinder, 30. Clamping part, 31. Hollow rotating platform, 32. Rotary drive motor, 33. Adapter shaft, 34. Pressing shaft. Detailed Implementation
[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0035] This invention provides an apparatus for hot stamping on the side of a light guide plate, such as... Figures 1 to 12 As shown.
[0036] Example 1: A device for hot stamping on the side of a light guide plate includes a frame 1, which serves as the supporting foundation for the entire device. The frame 1 is a frame structure formed by welding steel profiles. The upper part of the frame 1 has a horizontal mounting platform. The mounting platform is divided into positioning stations and hot stamping stations along the conveying direction of the light guide plate. All other mechanisms in the device are arranged with the mounting platform of the frame 1 as a reference, thereby ensuring the relative positional accuracy between the mechanisms.
[0037] A positioning mechanism is installed on the frame 1 to position the light guide plate to be hot-stamped. The positioning mechanism includes a positioning slide rail 3, which is bolted to the mounting platform of the frame 1. The extension direction of the positioning slide rail 3 points towards the positioning station, providing a linear guide reference for the positioning action. A positioning base plate 2 is slidably mounted on the positioning slide rail 3. At the end of the positioning base plate 2 near the positioning station, two mutually perpendicular positioning surfaces are machined, forming an L-shaped corner structure for contacting the two adjacent sides of the light guide plate. When the light guide plate is delivered to the positioning station, the two positioning surfaces simultaneously contact the two adjacent sides of the light guide plate, thus determining the position and deflection angle of the light guide plate in the horizontal plane in one step, avoiding the hassle of manual alignment after single-sided positioning.
[0038] The movement of the positioning base plate 2 is driven by the positioning lead screw 4, whose axis is parallel to the positioning slide rail 3. The positioning lead screw 4 is connected to the positioning base plate 2 via a mating nut. The end of the positioning lead screw 4 is connected to the positioning drive component 5, which is a servo motor and fixedly mounted on the frame 1. After the positioning drive component 5 is started, it drives the positioning lead screw 4 to rotate. The rotational motion of the positioning lead screw 4 is converted into linear motion of the positioning base plate 2 through a threaded pair, causing the positioning base plate 2 to move along the positioning slide rail 3 towards or away from the light guide plate. Because the lead screw drive has self-locking properties, the positioning base plate 2 can maintain a stable position after pressing against the light guide plate and will not retract during subsequent clamping actions, thus ensuring the reliability of the positioning reference.
[0039] Example 2: Two hot stamping mechanisms are also installed on the frame 1. The two hot stamping mechanisms are respectively set on opposite sides of the light guide plate, and are used to move towards each other and hot stamp the two opposite sides of the light guide plate. The hot stamping mechanism located on one side of the positioning mechanism is the positioning side hot stamping mechanism, and the other hot stamping mechanism is the feeding side hot stamping mechanism. The main structure of the two hot stamping mechanisms is the same, the difference is that the feeding side hot stamping mechanism can adjust the hot stamping angle according to the direction of the side of the light guide plate.
[0040] The hot stamping mechanism includes a support base 9, which is mounted on the frame 1, forming a fixed foundation for the hot stamping mechanism. A mounting base 7 is slidably mounted on the support base 9 via a slide rail. The mounting base 7 supports the remaining moving parts of the hot stamping mechanism. A hot stamping screw 8 is rotatably mounted on the lower side of the mounting base 7, and the hot stamping screw 8 is threadedly connected to the support base 9. A synchronous pulley is fitted to the end of the hot stamping screw 8, which is connected to the output shaft of the hot stamping motor 10 via a synchronous belt. The hot stamping motor 10 is fixedly mounted on the mounting base 7. When the hot stamping motor 10 operates, its output shaft drives the hot stamping screw 8 to rotate relative to the mounting base 7 via the synchronous belt. Because the hot stamping screw 8 is threadedly engaged with the fixed support base 9, when the hot stamping screw 8 rotates, it pushes the mounting base 7 and all its components to move along the slide rail as a whole, thereby moving the hot stamping plate 6 towards or away from the side of the light guide plate, realizing the feeding pressure during hot stamping and the retraction and return after hot stamping. The layout of the hot stamping motor 10 moving together with the mounting base 7 keeps the length of the synchronous belt constant and avoids tension fluctuations caused by the extension and contraction of the transmission components.
[0041] A support plate 11 is fixedly mounted on the upper side of the mounting base 7 facing the center of the frame 1, and the support plate 11 is vertically arranged. A slide plate is slidably mounted on the side of the support plate 11 facing the center of the frame 1 along its own height direction. A hot stamping plate 6 is fixedly mounted on the slide plate. The hot stamping plate 6 is an elongated strip that matches the side length of the light guide plate. The slide plate is driven by a hot stamping push rod 12 mounted on the mounting base 7. The telescopic end of the hot stamping push rod 12 is connected to the slide plate. When the hot stamping push rod 12 extends or retracts, it drives the slide plate to rise and fall along the support plate 11, thereby adjusting the height of the hot stamping plate 6 relative to the light guide plate, so that the hot stamping area of the hot stamping plate 6 is aligned with the target transfer position on the side of the light guide plate to accommodate light guide plates of different thicknesses.
[0042] Multiple heating tubes 13 are installed at intervals along the length of the hot stamping plate 6. Each heating tube 13 heats the hot stamping plate 6 in segments, so that the temperature distribution on the hot stamping surface of the hot stamping plate 6 is uniform along the length. During hot stamping, the hot stamping plate 6 transfers heat and pressure to the side of the light guide plate through the hot stamping foil, so that the transfer layer on the hot stamping foil adheres to the side of the light guide plate.
[0043] The continuous supply of hot stamping foil is accomplished by a hot stamping foil conveying assembly, which guides the hot stamping foil between the hot stamping plate 6 and the side of the light guide plate. The hot stamping foil conveying assembly includes an unwinding section 14, mounted on one side of the mounting base 7. Unused rolls of hot stamping foil are mounted on the unwinding section 14 and can be unwound by traction. Opposite to the unwinding section 14, a winding section 15 is mounted on the other side of the mounting base 7. The winding section 15 has a built-in winding motor, which pulls and winds the hot stamping foil after transfer, providing power for the foil's movement. A tension adjusting section is mounted at each end of the support plate 11. The hot stamping foil is drawn out from the unwinding section 14, passes sequentially around the tension adjusting section at one end, the side of the hot stamping plate 6 facing the light guide plate, and the tension adjusting section at the other end, before connecting to the winding section 15. The two tension adjusting sections jointly adjust the tension of the hot stamping foil during the conveying process.
[0044] The tension adjustment unit includes a tension support plate 16, which is fixedly installed at the end of the support plate 11, providing a mounting base for the tension adjustment unit. A base rod 17 is mounted on the tension support plate 16, and the base rod 17 has a waist-shaped through groove. A fastening bolt is mounted on the tension support plate 16, which passes through the waist-shaped through groove on the base rod 17 and connects to the tension support plate 16, thereby adjusting the mounting of the base rod 17 on the tension support plate 16. After loosening the fastening bolt, the base rod 17 can adjust its extension position along the direction of the waist-shaped through groove, changing its wrapping degree around the hot stamping foil, and thus changing the tension state of the hot stamping foil. Two tensioning rollers 18 are rotatably mounted on the base rod 17. The hot stamping foil passes between the two tensioning rollers 18. The tensioning rollers 18 rotate passively as the hot stamping foil moves. The two tensioning rollers 18 together increase the wrap angle of the hot stamping foil, so that the hot stamping foil remains flat and attached when passing between the hot stamping plate 6 and the side of the light guide plate. This prevents the hot stamping foil from becoming loose, shifted or wrinkled due to tension changes, which would affect the hot stamping position and the integrity of the transfer layer.
[0045] The difference between the feeding-side hot stamping mechanism and the positioning-side hot stamping mechanism lies in the installation method of its support base 9: the support base 9 in the feeding-side hot stamping mechanism is mounted on the frame 1 via an angle adjustment assembly. The angle adjustment assembly includes a rotating support 19, which rotatably connects the support base 9 to the frame 1. The rotating support 19 is a cross roller bearing, which can withstand axial loads and overturning moments, ensuring the entire feeding-side hot stamping mechanism remains stable and free of wobbling when rotating around the vertical axis. A follower adjustment plate 20 is connected to the support base 9, extending outward from the rotation range of the feeding-side hot stamping mechanism. A cam follower 21 is movably fitted onto the follower adjustment plate 20, with its roller abutting against and rolling along it. The cam follower 21 is connected to the adjusting screw 22, which is driven to rotate by the adjusting drive 23, which is fixed on the frame 1. When the adjusting drive 23 drives the adjusting screw 22 to rotate, the cam follower 21 translates along the axial direction of the adjusting screw 22. The roller of the cam follower 21 then pushes against the follower adjusting plate 20, causing the follower adjusting plate 20 to drive the support base 9 and the entire feeding side hot stamping mechanism to rotate relative to the frame 1 around the rotating support 19, thereby adjusting the angle between the hot stamping plate 6 and the side of the light guide plate of the feeding side hot stamping mechanism.
[0046] During actual hot stamping, the positioning side hot stamping mechanism maintains a fixed orientation based on the reference side determined by the positioning mechanism, while the feeding side hot stamping mechanism can swing within a preset angle range under the drive of the adjusting drive 23. When the light guide plate has a parallelism error between two opposite sides due to cutting, grinding, or forming errors, the control component controls the adjusting drive 23 to move according to the actual skew direction of the side, so that the hot stamping plate 6 of the feeding side hot stamping mechanism swings to a position parallel to the corresponding light guide plate side before feeding and applying pressure. This compensates for the parallelism error between the two opposite sides of the light guide plate, making the hot stamping pressure evenly distributed along the side of the light guide plate, avoiding problems such as insufficient local transfer, discontinuous hot stamping layer, or excessive local pressure caused by one end of the hot stamping plate 6 contacting first and the other end having a gap.
[0047] Example 3: A gantry mechanism is installed on the frame 1. The gantry mechanism is used to clamp the light guide plate and drive the light guide plate to move between the positioning station and the hot stamping station. It can also drive the light guide plate to rotate while keeping it clamped, so that different sides of the light guide plate correspond to the positioning side hot stamping mechanism or the feeding side hot stamping mechanism in sequence.
[0048] The gantry mechanism includes a spindle slide 24, which is slidably mounted on the frame 1, forming the moving carrier of the gantry mechanism. The spindle slide 24 is connected to a synchronous belt 25, which is wound around synchronous pulleys located at both ends of the frame 1. One of the synchronous pulleys is driven by a gantry motor 26 mounted on the frame 1. When the gantry motor 26 operates, it drives the synchronous pulley to rotate, and the synchronous belt 25 circulates between the synchronous pulleys at both ends, pulling the spindle slide 24 to slide back and forth along the frame 1, realizing the transfer of the light guide plate between the positioning station and the hot stamping station.
[0049] A hollow rotary platform 31 is mounted on the spindle slide 24. The fixed ring of the hollow rotary platform 31 is connected to the spindle slide 24. A light guide plate support base 27 is mounted on the rotating ring of the hollow rotary platform 31. The light guide plate support base 27 is mounted on the spindle slide 24 via the hollow rotary platform 31, and its upper surface forms a support plane for lifting the light guide plate. The hollow rotary platform 31 is driven by a rotary drive motor 32, which is fixedly mounted on the spindle slide 24 and connected to the hollow rotary platform 31. When the rotary drive motor 32 outputs rotational power, the rotating ring and the light guide plate support base 27 are precisely rotated around the vertical axis via a reduction gear transmission inside the hollow rotary platform 31. A through hole in the middle of the hollow rotary platform 31 allows detection cables or air passages below the light guide plate to pass through, preventing wire entanglement during rotation.
[0050] A gantry 28 is fixedly mounted on the spindle slide 24, spanning above the light guide plate support base 27. A downward pressing cylinder 29 is mounted on the crossbeam of the gantry 28, with its output rod pointing vertically downward toward the light guide plate support base 27. A clamping part 30 is rotatably connected to the output rod of the downward pressing cylinder 29, located directly above the light guide plate support base 27, which is positioned below it. When the downward pressing cylinder 29 is vented, its output rod extends downward, causing the clamping part 30 to move toward the light guide plate support base 27 until the light guide plate is pressed between the clamping part 30 and the light guide plate support base 27, forming an upper and lower clamping of the light guide plate.
[0051] The rotatable connection between the clamping part 30 and the output rod of the pressing cylinder 29 is achieved through the following structure: a transition shaft 33 is fixedly installed on the output rod of the pressing cylinder 29, a pressing rotating shaft 34 is sleeved on the outer side of the lower end of the transition shaft 33, and a groove is provided at the lower end of the pressing rotating shaft 34. A bolt is provided in the groove at the lower end of the pressing rotating shaft 34. This bolt passes through the threaded hole on the lower end face of the pressing rotating shaft 34 and the transition shaft 33 for threaded connection. The transition shaft 22 and the pressing rotating shaft 34 are connected by an angular contact bearing. The pressing rotating shaft 34 is fixedly connected to the clamping part 30. Therefore, the clamping part 30 can both rise and fall with the pressing cylinder 29 to clamp or release the light guide plate, and can also rotate relative to the output rod of the pressing cylinder 29 about the vertical axis.
[0052] The overall collaborative working process of the gantry mechanism is as follows: The spindle slide 24 first stops at the positioning station. After the light guide plate is positioned by the positioning mechanism, the pressing cylinder 29 drives the clamping part 30 to press down, clamping the light guide plate between the clamping part 30 and the light guide plate support base 27. Then, the gantry motor 26 drives the spindle slide 24 to carry the light guide plate to the hot stamping station via the synchronous belt 25. The two hot stamping mechanisms move towards each other, and simultaneously hot stamp the two opposite sides of the light guide plate. After the two opposite sides are hot stamped, the two hot stamping mechanisms retract, and the rotary drive motor 32 then drives the hollow rotary platform 31 to rotate the light guide plate support base 27 around the vertical axis. Due to the rotational cooperation of the clamping part 30 through the pressing shaft 34 and the adapter shaft 33, the clamped light guide plate, together with the clamping part 30, can rotate together, while the pressing cylinder 29 always maintains the clamping state and does not loosen. After the light guide plate rotates 90 degrees, its third side rotates exactly to the position corresponding to the positioning side hot stamping mechanism, and the feeding side hot stamping mechanism feeds again to complete the hot stamping of the third side. In this way, multiple sides can be continuously hot stamped in one clamping process of the light guide plate, avoiding the efficiency loss and cumulative positioning error caused by repeated release, flipping and repositioning.
[0053] The frame 1 is also equipped with a control component, which is connected to the positioning mechanism, the positioning-side hot stamping mechanism, the feeding-side hot stamping mechanism, and the gantry mechanism. This control component controls the coordinated operation of each mechanism to complete hot stamping on multiple sides during a single clamping of the light guide plate. The control component includes a programmable controller and a touchscreen connected to the programmable controller. The output of the programmable controller is electrically connected to the positioning drive 5. During operation, the operator sets the size parameters of the light guide plate on the operation panel. The control component calculates the target position of the positioning substrate 2 based on these parameters. When the light guide plate is placed in the positioning station, the control component sends a pulse signal to the positioning drive 5. The positioning drive 5 drives the positioning screw 4 to rotate a predetermined number of turns, precisely moving the positioning substrate 2 to the target position and straightening the light guide plate. After positioning is completed and the light guide plate is clamped by the gantry mechanism, the control component drives the positioning drive 5 to reverse, causing the positioning substrate 2 to retract along the positioning slide rail 3 to avoid interference with the subsequent movement trajectory of the light guide plate, thus creating conditions for the continuous hot stamping process.
[0054] A touchscreen is also installed on the frame 1. The touchscreen is electrically connected to the positioning mechanism, the positioning-side hot stamping mechanism, the feeding-side hot stamping mechanism, the gantry mechanism, the rotary drive motor 32, the heating tube 13, and related detection and alarm structures. The touchscreen control component has a built-in parameter database corresponding to light guide plates of different specifications. The operator inputs the width, thickness, and other dimensional information of the light guide plate, and the programmable controller calls up the corresponding hot stamping temperature, pressure, mechanism movement position, conveying speed, rotation angle, and hot stamping foil tension parameters, and controls each mechanism to move in a coordinated manner according to the set sequence. At the same time, the touchscreen can display the equipment operating status, various working parameters, abnormality type, and fault location in real time, and is used for reset control after equipment abnormality handling.
[0055] A temperature sensor is installed on the hot stamping plate 6, and a temperature controller is installed in the control cabinet of the frame 1. The temperature controller is electrically connected to the temperature sensor and multiple heating tubes 13. The temperature sensor is used to detect the working temperature of the hot stamping plate 6 in real time. The controller is electrically connected to the temperature sensor and the multiple heating tubes 13 installed inside the hot stamping plate 6, and adjusts the working state of the multiple heating tubes 13 according to the detected temperature to keep the hot stamping plate 6 within the set temperature range. When the detected temperature is higher than the set upper limit, the controller reduces the heating power or cuts off the heating power to prevent the light guide plate from softening or being damaged by heat. When the detected temperature is lower than the set lower limit, the controller increases the heating power to restore the hot stamping plate 6 to the required hot stamping temperature, thus forming a closed-loop temperature control and maintaining the temperature control accuracy at ±1℃. When the temperature exceeds the set range, the controller sends a signal to the touch screen control component and the abnormal alarm structure to cause the equipment to alarm or stop hot stamping.
[0056] Temperature sensors, temperature controllers, programmable controllers, touchscreen control components, and alarm structures are all mature products already existing in the field and can be directly purchased from the market. Their internal structures, working principles, wiring methods, and communication and control methods are all conventional technologies well known to those skilled in the art, and therefore will not be described in detail in this embodiment. In actual use, other models with the same or similar functions can be selected based on the temperature detection range, control accuracy, number of input / output points, communication interface, and installation conditions. This application does not make specific limitations in this regard.
[0057] Among them, the temperature sensor adopts the K-type thermocouple, the temperature controller adopts the azbil C1MTV0TA0300 digital temperature controller; the programmable controller adopts the Huichuan AM523-0808TN programmable controller, the touch screen control component adopts the Huichuan ITS7100P industrial touch screen; the abnormal alarm structure can adopt the PATLITE LR6-302W5BK-RYG three-layer signal tower with buzzer.
[0058] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.
Claims
1. An apparatus for hot stamping on the side of a light guide plate, characterized in that, include: Rack (1); A positioning mechanism is installed on the frame (1) and is used to position the light guide plate to be hot stamped; Two hot stamping mechanisms are respectively arranged on opposite sides of the light guide plate, and are used to move towards each other and hot stamp the two opposite sides of the light guide plate. The hot stamping mechanism located on one side of the positioning mechanism is the positioning side hot stamping mechanism, and the other hot stamping mechanism is the feeding side hot stamping mechanism. The feeding side hot stamping mechanism can adjust the hot stamping angle according to the direction of the side of the light guide plate. The gantry mechanism is movably mounted on the frame (1) and is used to clamp the light guide plate and drive the light guide plate to move between the positioning station and the hot stamping station. It can also drive the light guide plate to rotate while keeping the light guide plate clamped, so that different sides of the light guide plate correspond to the positioning side hot stamping mechanism or the feeding side hot stamping mechanism in sequence. A control component is connected to a positioning mechanism, a positioning-side hot stamping mechanism, a feeding-side hot stamping mechanism, and a gantry mechanism, respectively, and is used to control the coordinated action of each mechanism to complete hot stamping on multiple sides during a single clamping process of the light guide plate.
2. The equipment for hot stamping process on the side of a light guide plate as described in claim 1, characterized in that, The positioning mechanism includes: Positioning substrate (2), the positioning substrate (2) has two mutually perpendicular positioning surfaces, which are used to abut against the two adjacent sides of the light guide plate respectively; Positioning slide rail (3), the positioning base plate (2) is slidably mounted on the positioning slide rail (3); Positioning screw (4), which is connected to the positioning base plate (2) in a transmission manner; The positioning drive (5) is connected to the positioning screw (4) for driving the positioning screw (4) to rotate, so that the positioning base plate (2) moves along the positioning slide rail (3) towards or away from the light guide plate.
3. The equipment for hot stamping the side of a light guide plate as described in claim 1, characterized in that, The hot stamping mechanism includes: Hot stamping plate (6); Mounting base (7), which is slidably mounted on support base (9) via slide rail, and hot stamping screw (8) is rotatably mounted on the lower side of mounting base (7). Hot stamping screw (8) is threadedly connected to support base (9) mounted on frame (1), and hot stamping screw (8) is connected to the output shaft of hot stamping motor (10) on mounting base (7) via synchronous belt, for driving hot stamping plate (6) to move towards or away from the side of light guide plate; Support plate (11) is fixedly installed on the upper side of the mounting base (7) facing the center of the frame (1). A sliding plate is slidably installed on the side of the support plate (11) facing the center of the frame (1) along its own height direction. The hot stamping plate (6) is fixedly installed on the sliding plate, and the sliding plate is driven by the hot stamping push rod (12) installed on the mounting base (7) to adjust the height of the hot stamping plate (6) relative to the light guide plate. Multiple heating tubes (13) are installed at intervals within the hot stamping plate (6) along the length of the hot stamping plate (6); A hot stamping foil conveying assembly is used to pass the hot stamping foil between the hot stamping plate (6) and the side of the light guide plate.
4. The equipment for hot stamping process on the side of a light guide plate as described in claim 3, characterized in that, The hot stamping foil conveying assembly includes: Unwinding section (14), which is used to mount unused roll hot stamping foil; The winding section (15) is used to pull and wind up the hot stamping foil after the transfer is completed. Two tension adjustment sections are provided for adjusting the tension of the hot stamping foil during the conveying process. The unwinding section (14) and the rewinding section (15) are respectively installed on both sides of the mounting base (7), and the two tension adjustment sections are respectively installed at both ends of the support plate (11). The hot stamping foil is led out from the unwinding section (14), passes around the two tension adjustment sections and the hot stamping plate (6), and is connected to the rewinding section (15) after passing towards the light guide plate.
5. The equipment for hot stamping process on the side of a light guide plate as described in claim 4, characterized in that, The tension adjustment unit includes: Tensioning support plate (16), which is fixedly installed on support plate (11); The bottom rod (17) is provided with a waist-shaped through groove. The tensioning support plate (16) is equipped with a fastening bolt, which passes through the waist-shaped through groove on the bottom rod (17) and is connected to the tensioning support plate (16) to install the bottom rod (17) on the tensioning support plate (16). Two tensioning wheels (18) are rotatably installed on the bottom rod (17).
6. The equipment for hot stamping process on the side of a light guide plate as described in claim 3, characterized in that, The support base (9) in the feeding side hot stamping mechanism is mounted on the frame (1) via an angle adjustment assembly, the angle adjustment assembly comprising: Rotary support (19), the support seat (9) in the feeding side hot stamping mechanism is rotatably connected to the frame (1) through the rotating support (19); Follow-up adjustment plate (20), the follow-up adjustment plate (20) is connected to the support base (9) in the hot stamping mechanism on the feeding side; A cam follower (21) is movablely engaged with a follower adjustment plate (20); Adjusting screw (22), which is connected to cam follower (21) for transmission; Adjustment drive (23) is used to drive adjustment screw (22) to rotate, so that cam follower (21) pushes follower adjustment plate (20) and drives the hot stamping mechanism on the feeding side to rotate relative to the frame (1) to adjust the angle between the hot stamping plate (6) of the hot stamping mechanism on the feeding side and the side of the light guide plate.
7. The equipment for hot stamping the side of a light guide plate as described in claim 6, characterized in that, The rotating support (19) is a cross roller bearing. The hot stamping mechanism on the feeding side can swing within a preset angle range under the drive of the adjusting drive (23) to compensate for the parallelism error between the two opposite sides of the light guide plate, so that the hot stamping plate (6) of the hot stamping mechanism on the feeding side remains parallel to the corresponding side of the light guide plate.
8. The equipment for hot stamping process on the side of a light guide plate as described in claim 1, characterized in that, The gantry mechanism includes: A spindle slide (24) is slidably mounted on a frame (1) and connected to a timing belt (25). The timing belt (25) is wound around timing pulleys located at both ends of the frame (1), one of which is driven by a gantry motor (26) mounted on the frame (1). A light guide plate support base (27) is mounted on a spindle slide (24); Gantry (28), which is fixedly mounted on the spindle slide (24); A downward pressure cylinder (29) is mounted on a gantry frame (28); The clamping part (30) is rotatably connected to the output rod of the pressing cylinder (29); The light guide plate support base (27) is located below the clamping part (30), and the pressing cylinder (29) is used to drive the clamping part (30) to move towards the light guide plate support base (27) so as to clamp the light guide plate between the clamping part (30) and the light guide plate support base (27).
9. The equipment for hot stamping process on the side of a light guide plate as described in claim 8, characterized in that, The gantry mechanism also includes a hollow rotating platform (31) and a rotary drive motor (32). The light guide plate support base (27) is mounted on the main spindle slide (24) via the hollow rotating platform (31). The rotary drive motor (32) is fixedly mounted on the main spindle slide (24) and is connected to the hollow rotating platform (31) for transmission. It is used to drive the hollow rotating platform (31) to rotate the clamped light guide plate around the vertical axis. After the light guide plate completes the hot stamping on two opposite sides, the third side of the light guide plate is rotated to the position corresponding to the hot stamping mechanism on the feeding side.
10. The equipment for hot stamping process on the side of a light guide plate as described in claim 8, characterized in that, A converter shaft (33) is fixedly installed on the output rod of the pressing cylinder (29). The converter shaft (33) is connected to the pressing shaft (34) through an angular contact bearing. The pressing shaft (34) is fixedly connected to the clamping part (30).