UV embossing device for light guide plate

Abstract

This application relates to the technical field of light guide plate processing and discloses a UV embossing device for light guide plates. The device comprises a frame, a conveyor unit, and a roller unit mounted on the frame. The roller unit comprises a mounting frame that moves on the frame toward or away from the conveyor unit. A support mechanism connected to the mounting frame has a central axis. A pressure roller is sleeved on the support mechanism and can rotate relative to the support mechanism. The pressure roller is coaxial with the central axis and is made of a transparent material. An irradiation mechanism comprises a UV light bar and an adjustment member connected between the UV light bar and the central axis for adjusting the distance between the UV light bar and the inner wall of the pressure roller. A drive mechanism is mounted on the mounting frame and cooperates with the pressure roller to drive the pressure roller to rotate. The conveyor unit is used to clamp the substrate to be embossed and pass it through the pressure roller near the periphery of the UV light bar. This application can improve the UV curing effect of light guide plates.

Description

Technical Field

[0001] The present application relates to the technical field of light guide plate processing, and in particular to a UV embossing device for light guide plates. Background Art

[0002] The microstructure of the light guide plate surface is usually formed using a stamping device. When the existing stamping device rolls the light guide plate, the UV glue on the surface of the light guide plate is pressed and formed when the light guide plate passes through the pressing roller and is cured by ultraviolet light.

[0003] Among them, the ultraviolet lamp in the existing imprinting device is usually installed at the center of the pressure roller or beside the pressure roller, so that the distance between the ultraviolet lamp and the pressure part of the light guide plate is relatively far, resulting in the attenuation of the intensity of the ultraviolet light irradiated to the pressure part, which is prone to poor curing effect, causing the incompletely cured microstructure to deform or adhere to the pressure roller, affecting the surface quality of the light guide plate. Summary of the Invention

[0004] In order to improve the UV curing effect of the light guide plate, the present application provides a UV embossing device for the light guide plate.

[0005] This application provides a UV embossing device for a light guide plate, which adopts the following technical solution:

[0006] A UV embossing device for a light guide plate comprises: a frame, and a transmission unit and a roller pressing unit installed on the frame; the roller pressing unit comprises

[0007] A mounting frame, movable on the frame toward or away from the conveying unit;

[0008] a support mechanism connected to the mounting frame and having a central axis;

[0009] a pressing roller, sleeved on the supporting mechanism and capable of rotating relative to the supporting mechanism, and coaxially arranged with the central axis, and the pressing roller is made of a transparent material;

[0010] an irradiation mechanism, comprising an ultraviolet light bar and an adjusting member, wherein the adjusting member is connected between the ultraviolet light bar and the central axis and is used to adjust the distance between the ultraviolet light bar and the inner wall of the pressing roller; and

[0011] A driving mechanism, mounted on the mounting frame and cooperating with the pressing roller, for driving the pressing roller to rotate;

[0012] The conveying unit is used to clamp the substrate to be imprinted and pass it through the pressing roller close to the periphery of the ultraviolet light bar.

[0013] By adopting this technical solution, by placing the UV light strip inside the pressure roller and using an adjustment member to control the distance between the UV light strip and the inner wall of the pressure roller, the UV light irradiation distance can be shortened as needed, reducing light intensity attenuation, thereby improving the curing effect of UV adhesive. At the same time, the transparent pressure roller allows UV light to pass through efficiently, further enhancing curing uniformity and reducing microstructure deformation or adhesion issues.

[0014] Optionally, the adjusting member includes a through rod and a locking head; the through rod is connected to the ultraviolet light strip, and at the same time, the through rod slides radially along the central axis and is passed through the central axis; each through rod corresponds to two locking heads, and the two locking heads are threadedly sleeved on the through rod and respectively abut against opposite sides of the central axis.

[0015] By adopting the above technical solution, the two locking heads are respectively pressed against the two sides of the central axis to fix the penetrating rod and the central axis relatively, and the position of the locking head on the penetrating rod is adjusted by moving the thread, so that the relative position of the penetrating rod and the central axis can be adjusted, thereby adjusting the position of the ultraviolet light strip.

[0016] Optionally, the support mechanism includes two groups of support groups symmetrically arranged on the central axis; each group of the support groups includes a support rod and a telescopic member; the telescopic member is connected between the support rod and the central axis, and is radially telescopic along the central axis; the support rod is parallel to the central axis; the pressure roller simultaneously abuts the outer periphery of the support rods in the two groups of the support groups through its inner periphery, so that the pressure roller is sleeved on the support mechanism.

[0017] By adopting the above technical solution and cooperating with the telescopic member and the support rod, the device can adapt to press rollers of different diameters, thereby enhancing the versatility of the device.

[0018] Optionally, the support group further includes a flexible shielding member, which is connected between the support rod and the central axis and can block the light of the ultraviolet light strip, so that the two groups of support groups jointly separate the inner cavity of the pressing roller into a dark light cavity and a bright light cavity, the dark light cavity is opposite to the feed side of the pressing roller, and the bright light cavity is opposite to the printing side and the discharge side of the pressing roller, and the ultraviolet light strip is located in the bright light cavity.

[0019] By adopting the above technical solution, the flexible shielding member divides the inner cavity of the pressing roller into a dark cavity and a bright cavity, effectively preventing UV light from leaking into the non-imprinting area and reducing the risk of premature curing of the UV adhesive. This partitioned irradiation method improves energy utilization and enhances the imprinting effect.

[0020] Optionally, the pressing roller includes a coaxially connected stamping section, a mounting section, and a gear ring, wherein the mounting section has two sections and is respectively connected to both ends of the stamping section; the stamping section is used for stamping, and the outer diameter of the mounting section is smaller than the outer diameter of the stamping section; the gear ring corresponds to the mounting section one by one, and the gear ring is coaxially fixedly sleeved on the outer circumference of the corresponding mounting section;

[0021] The driving mechanisms correspond one-to-one to the gear rings, and each group of the driving mechanisms includes a connecting member, a driving gear, and a driving source; the connecting member is connected to the mounting frame; the driving gear is rotatably connected to the connecting member, and at the same time, the driving gear is engaged with the corresponding gear ring; the driving source is installed on the connecting member and the output end is coaxially connected to the driving gear, which is used to drive the driving gear to rotate.

[0022] By adopting the above technical solution, the driving gear is engaged with the gear ring, so that when the driving source drives the driving gear to rotate, the pressure roller can rotate together, thereby realizing the rotation of the pressure roller.

[0023] Optionally, the position of the connecting member on the mounting frame can be adjusted relative to the mounting frame, so that the driving mechanism has an in-use state and a disengagement state, wherein the in-use state is characterized by the driving gear being engaged with the corresponding gear ring, and the driving gears of the two sets of driving mechanisms abutting against the stamping section through their sides and being away from each other at both ends; and the disengagement state is characterized by the driving gear being away from the gear ring and the stamping section;

[0024] The mounting frame includes a base rod and an extension rod, the base rod is connected to the frame, the extension rod is connected between the base rod and the central axis, and the extension rod and the central axis are detachably connected; when the extension rod is disconnected from the central axis and the driving mechanism is in the separated state, the pressure roller can be separated from the support mechanism.

[0025] By adopting the above technical solution, the adjustable setting of the connecting piece enables the drive mechanism to quickly switch between the use state and the separation state, facilitating the replacement and maintenance of the pressing roller. The detachable connection between the extension rod and the central shaft further simplifies the disassembly process and improves the operability of the equipment.

[0026] Optionally, the conveying unit includes two groups of clamping mechanisms, which are distributed along the axial direction of the pressure roller; each group of the clamping mechanisms includes a basic frame, a first clamp and a second clamp, the basic frame is installed on the frame, the first clamp and the second clamp are both used to clamp the substrate to be imprinted, the first clamp moves on the basic frame perpendicular to the axial direction of the pressure roller, and the second clamp is installed on the basic frame and opposite to the discharge side of the pressure roller.

[0027] Optionally, the basic frame is adjustable and movable on the frame in a direction parallel to the axial direction of the pressure roller to adjust the distance between the two groups of the clamping mechanisms.

[0028] Optionally, the roller pressing units include two groups, the pressing rollers of the two groups of roller pressing units are parallel to each other, and a space for the substrate to be imprinted to pass through is formed between the pressing rollers of the two groups of roller pressing units.

[0029] By adopting the above technical solution, the parallel arrangement of the two sets of roller pressing units realizes the simultaneous double-sided imprinting of the light guide plate, thereby improving production efficiency.

[0030] Optionally, two groups of movable frames are provided on the frame for moving toward or away from each other, and the two groups of movable frames are respectively connected to the mounting frames of the two groups of rolling units to adjust the distance between the two pressing rollers.

[0031] By adopting the above technical solution, the two sets of rolling units adjust the distance between the pressing rollers through the movable frame, so that the pressing rollers can adapt to light guide plates of different thicknesses, thereby enhancing the applicability of the device.

[0032] In summary, this application has at least one of the following beneficial effects:

[0033] 1. By installing the UV light bar and adjusting its position, the UV light bar is close to the stamped part of the light guide plate and directly irradiates the stamped part of the light guide plate to improve the curing effect of the UV glue;

[0034] 2. By setting up two sets of roller pressing units, the two pressing rollers can simultaneously emboss the upper and lower sides of the light guide plate to improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a front view of an embodiment of the present application;

[0036] Figure 2 yes Figure 1 Right side view;

[0037] Figure 3 This is a schematic structural diagram of a group of rolling units in an embodiment of the present application;

[0038] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0039] Figure 5 yes Figure 1 Top view of .

[0040] Explanation of reference numerals: 1. frame; 2. mounting frame; 21. base rod; 211. round bar segment; 212. square bar segment; 22. extension rod; 3. support mechanism; 31. central axis; 32. support group; 321. support rod; 322. telescopic member; 323. flexible shielding member; 4. pressing roller; 41. stamping section; 42. mounting section; 43. gear ring; 5. irradiation mechanism; 51. UV light strip; 52. adjusting member; 521. through rod; 522. locking head; 6. driving mechanism; 61. connecting member; 611. slider; 6 12. First stud; 613. First nut; 614. Second stud; 615. Second nut; 616. Connecting seat; 62. Driving gear; 63. Driving source; 7. Dark light cavity; 8. Bright light cavity; 9. Clamping mechanism; 91. Basic frame; 911. Driving screw; 912. Adjusting screw; 913. Guide rod; 914. Intermediate seat; 92. First clamp; 93. Second clamp; 10. Moving frame; 101. Moving seat; 11. Bidirectional screw; 12. Guide rod; 13. First slide groove; 14. Second slide groove. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1 To the attached Figure 5 This application is described in further detail.

[0042] The embodiment of the present application discloses a UV embossing device for a light guide plate. Figure 1 The UV embossing device for light guide plates includes a frame 1, a transmission unit and a rolling unit. The transmission unit is used to clamp the light guide plate to be embossed (not shown in the figure) and pass it horizontally through the rolling unit, and the rolling unit embosses the light guide plate.

[0043] Reference Figure 1 and Figure 2 The roller pressing unit comprises two groups, which are vertically distributed on a frame 1. The frame 1 comprises two groups of movable frames 10, which are vertically distributed and move toward or away from each other on the frame 1. The two movable frames 10 are respectively connected to the two groups of roller pressing units to drive the roller pressing units to move symmetrically along the vertical direction. The conveying unit is located between the two groups of roller pressing units, driving the light guide plate to pass between the two groups of roller pressing units, so that both the upper and lower surfaces of the light guide plate can be embossed. In addition, when embossing a light guide plate that only requires single-sided embossing, the two light guide plates can be overlapped. The conveying unit simultaneously clamps the two light guide plates and passes them between the two groups of roller pressing units, so that the two light guide plates can be embossed synchronously.

[0044] It should be noted that the portion of the light guide plate clamped by the conveying unit is waste material that needs to be cut off in subsequent processes. The surface of the light guide plate that needs to be printed is coated with UV glue. The UV glue can be pre-coated on the light guide plate, or a UV glue spraying mechanism can be set on the frame 1 and sprayed on the light guide plate before the light guide plate enters the rolling unit. In this embodiment, the UV glue is pre-coated.

[0045] The frame 1 is provided with a bidirectional screw 11 and a guide rod 12 extending vertically on opposite sides of the frame 1. The bidirectional screw 11 is driven to rotate by a motor. Each set of movable frames 10 includes two movable seats 101 that move on opposite sides of the frame 1. The movable seats 101 are slidably sleeved on the guide rod 12 on the same side and are simultaneously threadedly sleeved on the bidirectional screw 11 on the same side. The movable seats 101 on the two sets of movable frames 10 are respectively threaded on the positive thread section and the negative thread section of the bidirectional screw 11. When the motor drives the bidirectional screw 11 to rotate synchronously, the two sets of movable frames 10 move toward or away from each other.

[0046] Reference Figure 1 and Figure 2 As for the rolling units, the two rolling units correspond to the two mobile frames 10. Each rolling unit includes a mounting frame 2, a support mechanism 3, a pressure roller 4, an irradiation mechanism 5, and a drive mechanism 6. The mounting frame 2 serves as the installation base, the support mechanism 3 is connected to the mounting frame 2, the pressure roller 4 rotates on the support mechanism 3, the irradiation mechanism 5 is mounted on the support mechanism 3 and is located in the pressure roller 4, and the drive mechanism 6 is mounted on the mounting frame 2 to drive the pressure roller 4 to rotate.

[0047] Reference Figure 1 and Figure 3 Specifically, the mounting frame 2 includes a base rod 21 and an extension rod 22. The base rod 21 is in the shape of a long rod extending in the horizontal direction. Figure 2 The two distal ends of the base rod 21 are fixed to the two corresponding movable bases 101 of the movable frame 10, with the length of the base rod 21 extending perpendicular to the transmission direction of the light guide plate. The ends of the base rod 21 connected to the movable base 101 are round bar segments 211, which are shaped like circular shafts. The portion of the base rod 21 located between the two round bar segments 211 is a square bar segment 212, which is shaped like a square rod. Two extension rods 22 are mounted on the base rod 21.

[0048] Reference Figure 1 and Figure 3 The support mechanism 3 includes a central shaft 31 and a support group 32 . The central shaft 31 is detachably connected to the mounting frame 2 . The support group 32 has two groups, and the two groups of support groups 32 are symmetrically mounted on the central shaft 31 .

[0049] The central axis 31 is parallel to the base rod 21 and located on the side of the base rod 21 facing the conveyor unit. The two distal ends of the central axis 31 are located adjacent to the frame 1. These distal ends correspond to two extension rods 22, each of which connects the ends of the central axis 31 to the base rod 21. One end of the extension rod 22 defines a first through-hole for slidingly receiving a square bar segment 212, while the other end defines a second through-hole for slidingly receiving the end of the central axis 31. When the extension rod 22 is attached to the central axis 31, it fits over the square bar segment 212 and the end of the central axis 31. The extension rod 22 has bolts at each end that are threadedly locked to the square bar segment 212 and the central axis 31, respectively. To separate the extension rod 22 from the central axis 31, the bolts are removed, and the extension rod 22 is moved horizontally to the round bar segment 211. At this point, the extension rod 22 is separated from the central axis 31 and can rotate around the round bar segment 211.

[0050] Reference Figure 2 and Figure 3 , each support group 32 includes a support rod 321 and a telescopic member 322. The support rod 321 is in the shape of a circular axis and is parallel to the central axis 31. The support rod 321 is far away from each other at both ends and close to the central axis 31 at both ends, and the two ends of the support rod 321 are connected to the central axis 31 through the telescopic member 322. The telescopic member 322 is an electric telescopic rod. The base end of the telescopic member 322 is fixed to the central axis 31, and the telescopic end of the telescopic member 322 is fixed to the support rod 321 and radially telescopes along the central axis 31. The distance between the support rod 321 and the central axis 31 is adjusted by adjusting the length of the telescopic end of the telescopic member 322. The telescopic distances of the telescopic members 322 in the two support groups 32 are synchronized, and the telescopic directions are opposite along the same straight line direction, so that the distances from the support rods 321 to the central axis 31 in the two support groups 32 are consistent. It should be noted that the two ends of the support rod 321 connected to the adjustment member 52 are coaxially connected relative to the middle of the support rod 321.

[0051] The pressure roller 4 is cylindrical with a hollow interior. When the pressure roller 4 is installed on the support mechanism 3, the two support rods 321 are first adjusted to a distance between the two sides away from each other that is less than the inner diameter of the pressure roller 4. The pressure roller 4 then simultaneously surrounds the central axis 31 and the two support rods 321. The two support rods 321 are then adjusted to be close to the inner circumference of the pressure roller 4, so that the support rods 321 support the pressure roller 4 and make the pressure roller 4 coaxial with the central axis 31. The pressure roller 4 is then axially limited relative to the central axis 31 by the drive mechanism 6. It should be noted that the telescopic member 322 can accommodate pressure rollers 4 of different sizes by adjusting the distance the telescopic end extends.

[0052] The pressing rollers 4 of the two sets of rolling units are opposite and close to each other, and the light guide plate passes between the two pressing rollers 4. Each pressing roller 4 includes a coaxially connected stamping section 41, a mounting section 42, and a gear ring 43. The mounting section 42 has two sections, which are respectively fixed to the two ends of the stamping section 41 that are far away from each other. The inner diameter of the mounting section 42 is consistent with the inner diameter of the stamping section 41, and the outer diameter of the mounting section 42 is smaller than the outer diameter of the stamping section 41. The gear ring 43 corresponds to the mounting section 42 one by one and is coaxially fixed and sleeved on the outer periphery of the corresponding mounting section 42. At the same time, the outer diameter of the outermost axis of the gear ring 43 is still smaller than the outer diameter of the stamping section 41. The stamping section 41 is made of a transparent material that can transmit ultraviolet light, such as plastic, glass, etc.; the stamping section 41 is used to stamp the light guide plate, and the outer peripheral wall of the stamping section 41 has a pattern for stamping (not shown in the figure).

[0053] Reference Figure 3 and Figure 4 The drive mechanisms 6 correspond to the gear rings 43 one-to-one. Each set of drive mechanisms 6 includes a connector 61, a drive gear 62, and a drive source 63. The connector 61 includes a slider 611, a first stud 612, a first nut 613, a second stud 614, a second nut 615, and a connector 616. The slider 611 is square-shaped and slides along the length of the square segment 212. There are two first studs 612, which are fixed to opposite ends of the slider 611 along the direction of movement of the light guide plate. The two first studs 612 are respectively extended out of the square segment 212 in a direction away from each other. The square segment 212 is provided with a first sliding groove 13 for the first studs 612 to pass through and slide. The first nut 613 corresponds to the first stud 612 one by one and is threadedly sleeved on the corresponding first stud 612. When the slider 611 slides along the length direction of the square segment 212 to the set position, the first nut 613 is moved toward the square segment 212 until it is pressed against the outer periphery of the square segment 212 to position the slider 611. The second stud 614 slides vertically through the slider 611, and the second stud 614 is fixedly connected to the connecting seat 616 at one end close to the central axis 31. The second nut 615 has two threads that are both threaded on the second stud 614, and the two second nuts 615 are respectively opposite to the upper and lower sides of the slider 611. When the second stud 614 slides vertically relative to the slider 611 to a set position, the two second nuts 615 are respectively threadedly moved to abut against the upper and lower sides of the slider 611, so as to position the second stud 614 relative to the slider 611. The square segment 212 is provided with a second sliding groove 14 along the length direction to make way for the second stud 614 and the second nut 615.

[0054] The drive gear 62 is rotatably connected to the connecting base 616, and the rotation axis of the drive gear 62 is parallel to the axis of the gear ring 43. The drive source 63 is a rotary motor, which is mounted on the connecting base 616 and has its output end coaxially fixed to the drive gear 62, so that the drive source 63 drives the drive gear 62 to rotate.

[0055] After the pressure roller 4 is installed on the support mechanism 3 and the support mechanism 3 is installed on the extension rod 22, the connecting member 61 adjusts the position of the slider 611 on the square segment 212 and adjusts the position of the second nut 615 on the second stud 614 to adjust the height position of the connecting seat 616 and the driving gear 62, so that the driving mechanism 6 can have a use state and a separation state.

[0056] When the drive mechanism 6 is in use, the drive gear 62 meshes with the corresponding gear ring 43, and the sides of the two drive gears 62 corresponding to the two gear rings 43 on the same pressure roller 4 respectively abut against the end walls of the stamping section 41 that are separated from each other, so that the two drive gears 62 jointly limit the axial position of the pressure roller 4 relative to the central axis 31. At this time, the drive source 63 is activated to drive the drive gear 62 to rotate, so that the pressure roller 4 can be rotated through the meshing of the drive gear 62 and the gear ring 43.

[0057] When the driving mechanism 6 is in the disengaged state, the driving gear 62 is separated from the corresponding gear ring 43 and the pressure roller 4, so that after the central shaft 31 is separated from the extension rod 22, the pressure roller 4 can slide away from the support mechanism 3 from the end of the central shaft 31 for replacement.

[0058] Reference Figure 2 and Figure 3 The irradiation mechanism 5 includes a UV light bar 51 and an adjusting member 52. The UV light bar 51 is long and can emit ultraviolet light. The adjusting members 52 are mounted at two ends of the UV light bar 51 that are spaced apart from each other. Each set of adjusting members 52 includes a through rod 521 and a locking head 522. One end of the through rod 521 is connected to the end of the UV light bar 51. The through rod 521 is vertically slidably inserted into the central axis 31, so that the UV light bar 51 is parallel to the central axis 31 and is located on the side of the central axis 31 close to the light guide plate. The portion of the UV light bar 51 opposite the pressing roller is located within the inner cavity of the pressing roller. Each set of adjusting members 52 has two nut-shaped locking heads 522. The two locking heads 522 are threaded onto the through rod 521 and respectively press against opposite sides of the central axis 31 to position the UV light bar 51.

[0059] By threading the locking head 522, the distance between the UV light bar 51 and the central axis 31 can be adjusted, thereby adjusting the distance between the UV light bar 51 and the light guide plate passing through the pressure roller 4. This allows the UV light bar 51 to adapt to pressure rollers of different sizes and also allows it to be closer to the light guide plate to improve the curing effect. It should be noted that the axial extension length of the pressure roller 4 is less than the extension length of the UV light bar 51, which in turn is less than the extension length of the support rod 321.

[0060] Reference Figure 2 and Figure 3 Furthermore, the support group 32 also includes a flexible shielding member 323. The flexible shielding member 323 is connected between the support rods 321 and the central axis 31, and fills the cavity enclosed by the through rod 521, the support rods 321, and the central axis 31. When the distance between the support rods 321 and the central axis 31 changes, the flexible shielding member 323 changes accordingly. The flexible shielding member 323, the central axis 31, and the support rods 321 are all capable of blocking ultraviolet light, so that the two support groups 32 together divide the inner cavity of the pressing roller 4 into a dark light cavity 7 and a bright light cavity 8. The ultraviolet light strip 51 is located in the bright light cavity 8. The dark light cavity 7 is opposite to the feeding side of the pressing roller 4 for feeding the light guide plate and the side of the pressing roller 4 away from the light guide plate, and the bright light cavity 8 is opposite to the imprinting side of the pressing roller 4 for imprinting the light guide plate and the discharging side of the pressing roller 4 for discharging the light guide plate, so that the ultraviolet light can be irradiated from the bright light cavity 8 to the light guide plate to cure the imprinted part of the light guide plate, and at the same time, the ultraviolet light is not easy to irradiate from the dark light cavity 7 to the light guide plate, so as to prevent the ultraviolet light from curing the unimprinted part of the light guide plate.

[0061] More preferably, in this embodiment, the flexible shielding member 323 is an accordion board that can be extended and retracted. In other embodiments, the flexible shielding member 323 can also be a light-shielding cloth or a telescopic board.

[0062] Reference Figure 1 and Figure 5 As for the conveying unit, the conveying unit includes two sets of clamping mechanisms 9, which are respectively distributed on opposite sides of the frame 1 along the axis of the pressing roller 4. Each set of clamping mechanisms 9 includes a base frame 91, a first clamp 92 and a second clamp 93.

[0063] Specifically, each base frame 91 includes a drive screw 911, an adjustment screw 912, a guide rod 913, and an intermediate seat 914. There are two intermediate seats 914, with the guide rod 913 fixed between the two intermediate seats 914. The drive screw 911 is rotatably connected between the two intermediate seats 914, and the guide rod 913 is parallel to the drive screw 911. There are two adjustment screws 912, each fixed to the two intermediate seats 914 and parallel to each other. The axes of the drive screw 911 and the adjustment screw 912 are perpendicular to each other, so that the base frame 91 has a U-shaped structure. The two adjustment screws 912 of the base frame 91 are simultaneously slidably inserted into the frame 1 in a direction parallel to the axis of the pressure roller 4. The frame 1 has a vertical rod for the adjustment screws 912 to pass through, and each adjustment screw 912 is threadedly mounted with two adjustment nuts that are respectively tightened against opposite sides of the vertical rod to position the base frame 91 relative to the frame 1. At the same time, a motor for driving the drive screw 911 is installed on the middle seat 914. It should be noted that the motors in the two groups of clamping mechanisms 9 drive the drive screws 911 in the two groups of clamping mechanisms 9 to rotate synchronously and in the same direction.

[0064] Both the first clamp 92 and the second clamp 93 are conventional pneumatic clamps, each having a jaw for gripping the light guide plate. The jaws of the clamps extend vertically to release or retract the grip. The base of the first clamp 92 slides over the guide rod 913 along its length and is threaded onto the drive screw 911. When the motor drives the drive screw 911 to rotate, it drives the first clamp 92 to move axially along the drive screw 911. The base of the second clamp 93 is threaded onto the guide rod 913 and the drive screw 911 but is not threadedly connected to the drive screw 911. The base of the second clamp 93 is fixed to an intermediate base 914 near the discharge end of the frame 1, securing the base of the second clamp 93 relative to the intermediate base 914.

[0065] Reference Figure 1 and Figure 5The conveying unit transports the light guide plate by having two sets of first clamps 92 of the clamping mechanism 9 clamp opposite sides of the light guide plate at the feed end of the frame 1. The clamps then jointly drive the light guide plate between two pressing rollers 4. The rotation speed of the pressing rollers 4 matches the movement speed of the first clamps 92, so that as the light guide plate passes between the two pressing rollers 4, the rotating pressing rollers 4 simultaneously imprint the light guide plate. Simultaneously, the UV light bar 51 illuminates the imprinted portion of the light guide plate to cure the UV adhesive. When the first clamp 92 moves to the discharge side of the frame 1 and approaches the second clamp 93, the light guide plate is positioned between the extended jaws of the second clamp 93. At this point, the second clamp 93 clamps the light guide plate, while the first clamp 92 releases the light guide plate, and the pressing rollers 4 stop rotating. Then the first clamp 92 returns to the feeding side of the frame 1 to clamp the light guide plate, and then the second clamp 93 releases the light guide plate. The first clamp 92 clamps the light guide plate and moves it toward the second clamp 93. At the same time, the pressing roller 4 rotates again to emboss, so that the cooperation between the first clamp 92 and the second clamp 93 can continuously emboss the light guide plate with a longer length.

[0066] Furthermore, by adjusting the position of the adjusting nut on the adjusting screw 912 , the position of the driving screw 911 can be adjusted, thereby adjusting the distance between the two sets of clamping mechanisms 9 to accommodate light guide plates of different widths.

[0067] The UV embossing device for light guide plates in this embodiment of the present application operates as follows: a conveying unit clamps the light guide plate and passes it between two sets of roller pressing units, which simultaneously emboss both sides of the light guide plate. UV light strips 51 within the pressing rollers 4 illuminate the embossed area at close range, rapidly curing the UV adhesive. The coordination of the support mechanism 3 and the drive mechanism 6 ensures stable rotation and rapid replacement of the pressing rollers 4.

[0068] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A UV embossing device for a light guide plate, characterized in that: include: A frame (1), and a conveying unit and a rolling unit mounted on the frame (1); The rolling unit includes: A mounting frame (2) is movable on the frame (1) toward or away from the conveying unit; A support mechanism (3) connected to the mounting frame (2) and having a central axis (31); a pressing roller (4) which is sleeved on the supporting mechanism (3) and can rotate relative to the supporting mechanism (3), and is coaxially arranged with the central axis (31), and the pressing roller (4) is made of a transparent material; an irradiation mechanism (5), comprising an ultraviolet light bar (51) and an adjusting member (52), wherein the adjusting member (52) is connected between the ultraviolet light bar (51) and the central axis (31) and is used to adjust the distance between the ultraviolet light bar (51) and the inner wall of the pressing roller (4); and A driving mechanism (6) is mounted on the mounting frame (2) and cooperates with the pressing roller (4) to drive the pressing roller (4) to rotate; The conveying unit is used to clamp the substrate to be imprinted and pass it through the pressing roller (4) close to the periphery of the ultraviolet light bar (51).

2. The UV embossing device for a light guide plate according to claim 1, characterized in that: The adjusting member (52) includes a through rod (521) and a locking head (522); the through rod (521) is connected to the ultraviolet light bar (51), and the through rod (521) is radially slidable along the central axis (31) and is penetrated on the central axis (31); each through rod (521) corresponds to two locking heads (522), and the two locking heads (522) are threadedly sleeved on the through rod (521) and respectively abut against opposite sides of the central axis (31).

3. The UV embossing device for a light guide plate according to claim 1, wherein: The support mechanism (3) comprises two groups of support groups (32) symmetrically arranged on the central axis (31); each group of the support groups (32) comprises a support rod (321) and a telescopic member (322); the telescopic member (322) is connected between the support rod (321) and the central axis (31) and is radially telescopic along the central axis (31); the support rod (321) is parallel to the central axis (31); the pressure roller (4) simultaneously abuts against the outer periphery of the support rod (321) in the two groups of the support groups (32) through its inner periphery, so that the pressure roller (4) is sleeved on the support mechanism (3).

4. The UV embossing device for a light guide plate according to claim 3, wherein: The support group (32) further includes a flexible shielding member (323), which is connected between the support rod (321) and the central axis (31) and is capable of shielding the light of the ultraviolet light strip (51), so that the two groups of support groups (32) can jointly separate the inner cavity of the pressing roller (4) into a dark light cavity (7) and a bright light cavity (8), wherein the dark light cavity (7) is opposite to the feeding side of the pressing roller (4), and the bright light cavity (8) is opposite to the stamping side and the discharging side of the pressing roller (4), and the ultraviolet light strip (51) is located in the bright light cavity (8).

5. The UV embossing device for a light guide plate according to claim 1, characterized in that: The pressing roller (4) comprises a coaxially connected stamping section (41), a mounting section (42) and a gear ring (43); the mounting section (42) has two sections and is respectively connected to the two ends of the stamping section (41); the stamping section (41) is used for stamping, and the outer diameter of the mounting section (42) is smaller than the outer diameter of the stamping section (41); the gear ring (43) corresponds to the mounting section (42) one by one, and the gear ring (43) is coaxially fixedly sleeved on the outer periphery of the corresponding mounting section (42); The driving mechanism (6) corresponds to the gear ring (43) one by one, and each group of the driving mechanism (6) includes a connecting member (61), a driving gear (62) and a driving source (63); the connecting member (61) is connected to the mounting frame (2); the driving gear (62) is rotatably connected to the connecting member (61), and the driving gear (62) is meshed with the corresponding gear ring (43); the driving source (63) is installed on the connecting member (61) and the output end is coaxially connected to the driving gear (62) for driving the driving gear (62) to rotate.

6. The UV embossing device for a light guide plate according to claim 5, characterized in that: The position of the connecting member (61) on the mounting frame (2) can be adjusted relative to the mounting frame (2), so that the driving mechanism (6) has an in-use state and a disengagement state. The in-use state is characterized by the driving gear (62) being engaged with the corresponding gear ring (43), and at the same time, the driving gears (62) of the two groups of the driving mechanisms (6) respectively abut against the stamping section (41) through the side portions and are away from each other at both ends. The disengagement state is characterized by the driving gear (62) leaving the gear ring (43) and the stamping section (41). The mounting frame (2) comprises a base rod (21) and an extension rod (22), wherein the base rod (21) is connected to the frame (1), and the extension rod (22) is connected between the base rod (21) and the central shaft (31), and the extension rod (22) and the central shaft (31) are detachably connected; when the extension rod (22) and the central shaft (31) are disconnected and the driving mechanism (6) is in the separated state, the pressing roller (4) can be separated from the supporting mechanism (3).

7. The UV embossing device for a light guide plate according to claim 1, characterized in that: The conveying unit includes two groups of clamping mechanisms (9), and the two groups of clamping mechanisms (9) are distributed along the axial direction of the pressure roller (4); each group of the clamping mechanisms (9) includes a basic frame (91), a first clamp (92) and a second clamp (93), the basic frame (91) is installed on the frame (1), the first clamp (92) and the second clamp (93) are both used to clamp the substrate to be imprinted, the first clamp (92) moves on the basic frame (91) along the axial direction perpendicular to the pressure roller (4), and the second clamp (93) is installed on the basic frame (91) and is opposite to the discharge side of the pressure roller (4).

8. The UV embossing device for a light guide plate according to claim 7, characterized in that: The basic frame (91) is adjusted and moved on the frame (1) in an axial direction parallel to the pressing roller (4) to adjust the distance between the two groups of the clamping mechanisms (9).

9. The UV embossing device for a light guide plate according to claim 1, wherein: The roller pressing units have two groups, the pressing rollers (4) of the two groups of the roller pressing units are parallel to each other, and a space for the substrate to be printed to pass through is formed between the pressing rollers (4) of the two groups of the roller pressing units.

10. The UV embossing device for a light guide plate according to claim 9, characterized in that: Two groups of movable frames (10) are provided on the frame (1) for moving toward or away from each other. The two groups of movable frames (10) are respectively connected to the mounting frames (2) of the two groups of rolling units to adjust the distance between the two pressing rollers (4).

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