Apparatus for manufacturing LED reflector sheet

Abstract

An apparatus for manufacturing LED reflective sheets is disclosed. The present invention provides an improved apparatus for manufacturing LED reflective sheets, wherein release paper adhesive printing grooves are integrally formed on both sides of a printing roller having patterned printing grooves formed therein along the outer periphery of the printing roller, such that when a photoluminescent pattern is printed on the reflective sheet by the printing roller, a release paper adhesive pattern is also printed, thereby preventing the release paper from lifting between the release paper and the reflective sheet during the attachment of the release paper to the reflective sheet.

Description

Technical Field

[0001] This invention relates to an apparatus for manufacturing LED reflectors, and more specifically, to an improved apparatus for manufacturing LED reflectors, wherein release paper adhesive printing grooves are integrally formed on both sides of a printing roller having patterned printing grooves formed along its outer periphery and therein, such that when a photoluminescent pattern is printed on the reflector by the printing roller, a release paper adhesive pattern is also printed, so that during the attachment of the release paper to the reflector, both ends of the release paper also adhere to the release paper adhesive pattern, thereby preventing lifting between the release paper and the reflector. Background Technology

[0002] Generally, an LED reflector is a sheet material with photochromic patterns printed on its surface. When light emitted from an LED shines on it, the light is reflected through the photochromic patterns, thus emitting light. LED reflectors are used in advertising signs, road signs, POP displays, shop window signs, etc.

[0003] Korean Utility Model Registration No. 20-0451991 discloses an example of an apparatus for manufacturing reflective sheets.

[0004] The conventional apparatus for manufacturing reflective sheets disclosed in the above-registered utility models includes: a reflective sheet supply unit configured to supply reflective sheets wound in roll form on a roller; a pattern printing unit configured to form a photochromic pattern on the surface of the reflective sheet supplied by the reflective sheet supply unit; a drying unit configured to dry the photochromic pattern formed on the surface of the reflective sheet; a release paper supply roll configured to supply release paper to be attached to the surface of the reflective sheet on which the photochromic pattern is formed; a release paper attachment unit including a release paper pressing roller configured to press the release paper to adhere it to the surface of the reflective sheet; and an discharge unit configured to wind the reflective sheet with the release paper attached in roll form.

[0005] However, reflective sheets manufactured using conventional equipment are stored in rolls and covered with release paper to protect the photochromic pattern. The release paper is only attached to the adhesive photochromic pattern. Therefore, when reflective sheets with release paper are rolled up and stored in rolls, the edges of the reflective sheets often curl up due to refraction, allowing air to enter the curled space. This causes the adhesive liquid to harden or dry, thereby increasing the defect rate of the product.

[0006] [Related Technical Documents]

[0007] [Patent Documents]

[0008] 1) Korean Utility Model Registration No. 20-0451991 (registration date: January 18, 2011), Apparatus name: "Apparatus for manufacturing reflective sheets with photochromic patterns".

[0009] 2) Korean Patent Registration No. 10-1144894 (Registration Date: May 3, 2012), Invention Title: "Method for manufacturing a reflective sheet having a photochromic pattern, method for manufacturing a light guide plate with the reflective sheet attached, system for manufacturing a reflective sheet, and system for manufacturing a light guide plate with the reflective sheet attached."

[0010] 3) Korean Patent Registration No. 10-1269666 (Registration Date: May 24, 2013), Invention Title: "Pouch for Light-Emitting Device and Light-Emitting Device Using the Same".

[0011] 4) Korean Patent Registration No. 10-2391807 (Registration Date: April 25, 2022), Invention Title: "Reflective Sheet and Road Sign Using the Same". Summary of the Invention

[0012] The present invention is proposed to improve the above-mentioned problems, and its object is to provide an apparatus for manufacturing LED reflective sheets, wherein release paper adhesive printing grooves are integrally formed on both sides of a printing roller having patterned printing grooves formed along its outer periphery and therein, such that when a photoluminescent pattern is printed on the reflective sheet by the printing roller, a release paper adhesive pattern is also printed, so that during the period when the release paper is attached to the reflective sheet, both ends of the release paper also adhere to the release paper adhesive pattern, thereby preventing the release paper and the reflective sheet from lifting off, and solving the problem of reduced adhesion due to air inflow.

[0013] Another object of the present invention is to provide an apparatus for manufacturing LED reflective sheets, having an improved structure for controlling the tension of the sheet and for adjusting the gap between the rubber roller and the printing roller so as to maintain optimal printing conditions when printing photoluminescent patterns and release paper adhesive patterns on the reflective sheet, and an improved structure for adjusting the position of the reflective liquid tray.

[0014] To achieve the above objectives, according to one aspect of the present invention, an apparatus for manufacturing LED reflective sheets is provided, the apparatus comprising: a structural frame; a reflective sheet supply spool rotatably mounted in the middle of the structural frame for supplying reflective sheets; a printing unit mounted in the front of the structural frame for printing photoluminescent patterns and release paper adhesive patterns on the supplied reflective sheets using a viscous reflective liquid; a dryer mounted in the upper part of the structural frame for drying the reflective sheets with the photoluminescent patterns and release paper adhesive patterns printed on them as they pass by; and a winding spool rotatably mounted in the rear of the structural frame for winding the reflective sheets dried as they pass through the dryer. A reflective sheet; a release paper supply unit configured to supply release paper to the surface of the reflective sheet on which a photochromic pattern and a release paper adhesive pattern are printed before the reflective sheet is wound onto a winding spool, such that the release paper and the reflective sheet are wound together in their laminated state; and a plurality of guide rollers mounted between the reflective sheet supply spool, the printing unit, the dryer, and the winding spool to guide the reflective sheet, wherein the printing unit includes a rubber roller and a printing roller, the rubber roller and the printing roller being arranged vertically to guide the reflective sheet between them as they rotate in a direction in which they engage with each other, and the printing unit being configured such that: the printing roller includes pattern printing grooves and release paper adhesive printing grooves formed in its outer peripheral surface, wherein the pattern A viscous reflective liquid for printing photochromic patterns is injected into the printing groove, while a viscous reflective liquid for printing release paper adhesive patterns is injected into the release paper adhesive printing groove. A tray for storing the viscous reflective liquid is installed below the printing roller, so that when a portion of the lower side of the printing roller is immersed in the viscous reflective liquid while the printing roller rotates, the viscous reflective liquid is coated onto the outer circumferential surface of the printing roller. A cutter with an end contacting the outer circumferential surface of the printing roller is installed on one side of the printing roller, so that when the printing roller coated with the viscous reflective liquid rotates, the viscous reflective liquid coated on the outer circumferential surface of the printing roller is removed, so that the viscous reflective liquid remains only in the pattern printing groove and the release paper adhesive printing groove; therefore, when the reflective sheet is on the rubber... As the roller passes between the printing roller and the printing roller, the viscous reflective liquid remaining in the pattern printing grooves of the printing roller and the release paper adhesive printing grooves is transferred to the reflective sheet to be printed on the reflective sheet. The release paper supply unit includes: a release paper supply roll configured to supply release paper, and a pair of laminating rollers configured to rotate in a direction in which they engage with each other, so that when the reflective sheet passes between the pair of laminating rollers, the release paper is supplied between the pair of laminating rollers, such that the reflective sheet and the release paper are wound together on the winding roll in their laminated state. The device also includes: a tension load element installed in the structural frame in the portion through which the reflective sheet supplied from the reflective sheet supply roll passes, to continuously adjust the tension of the supplied reflective sheet.The device includes: a printing roller mounting device configured to rotatably mount a printing roller within a structural frame; a rubber roller position adjustment device configured to adjust the adhesion between the rubber roller and the printing roller by adjusting the position of the rubber roller; a tray position adjustment device configured to adjust the height of the tray to control the gap between the tray and the printing roller; and a cutter operating device configured to adjust the position of the cutter so that the cutter selectively makes close contact with the printing roller.

[0015] Preferably, the release paper adhesive printing groove formed in the printing roller has a constant width and includes a first partition and a second partition formed parallel to each other at a predetermined interval in the middle of the width direction, such that the release paper adhesive printing groove is divided from the inside into a first groove, a second groove and a third groove, thereby allowing the viscous reflective liquid to be reliably injected into the first groove, the second groove and the third groove respectively without leaving any gaps.

[0016] Preferably, the printing roller mounting device is mounted on both sides of the structural frame to support the two ends of the printing roller, and includes: a longitudinal moving rod, which is mounted to pass through a portion of the structural frame at a position corresponding to the printing roller, and has a male threaded portion formed on the outer circumferential surface at its rear end; a coupling member, which is integrally formed with the front end of the longitudinal moving rod and has a coupling protrusion protruding from its front surface; a support plate, which is fixed to the structural frame such that the longitudinal moving rod passes through; and a circular plate, which is rotatably connected to the front surface of the support plate and has a hole formed in its center through which the longitudinal moving rod passes and a female threaded portion formed in the hole corresponding to the male threaded portion of the longitudinal moving rod, wherein when the circular plate rotates, the longitudinal moving rod moves forward or backward along the thread; and engagement holes corresponding to the coupling protrusions are formed in both ends of the printing roller, such that the printing roller is positioned such that the coupling protrusions are inserted into the engagement holes, and in this state, the longitudinal moving rod moves forward so that the coupling protrusions are inserted into and fixed to the engagement holes.

[0017] Preferably, the rubber roller position adjustment device is installed on both sides of the structural frame to support the two ends of the rubber roller, and includes: a pair of movable plate guides fixed to the structural frame at predetermined intervals at positions corresponding to the rubber roller; a vertical movable plate assembled between the pair of movable plate guides for vertical movement along the movable plate guides, and having a shaft insertion hole formed in its middle, into which the shaft of the rubber roller is inserted, wherein the shaft insertion hole is formed to be open in one direction, allowing the shaft of the rubber roller to be inserted; a cover plate fixed to a surface having an opening communicating with the shaft insertion hole of the vertical movable plate, thereby selectively covering the opening; a clamping bolt tightened to penetrate the cover plate, the end of the clamping bolt being mounted to be in close contact with the shaft of the rubber roller to prevent the shaft of the rubber roller from moving along the shaft insertion hole; and a vertical rod extending upward from the upper part of the vertical movable plate, and It also has a male threaded portion formed on its outer circumferential surface; a rubber roller worm gear, which is rotatably mounted in the structural frame at a position corresponding to the middle of the vertical rod, and has a hollow portion, in the center of which a female threaded portion is formed that is threadedly connected to the male threaded portion of the vertical rod, so that the vertical rod is fastened therethrough; a rubber roller worm wheel, which is rotatably mounted in the structural frame and meshes with the rubber roller worm gear; and a rubber roller handle, which is configured to rotate the rubber roller worm wheel, wherein the shaft of the rubber roller is inserted into the shaft insertion hole of the vertical moving plate and then fixed by a clamping bolt to prevent movement, and in this state, when the rubber roller worm wheel is rotated in one direction or the opposite direction by the rubber roller handle, the rubber roller worm wheel rotates, and then the vertical rod moves up and down along the thread, and the vertical moving plate also moves up and down with the vertical rod to adjust the position of the rubber roller.

[0018] Preferably, the pallet position adjustment device is installed on both sides of the structural frame to support both ends of the pallet, and includes: a rotating shaft mounted to extend through the structural frame below the pallet; a pallet worm gear connected to the outer end of the rotating shaft to rotate with it; a pallet worm wheel mounted to mesh with the pallet worm gear; a pallet handle configured to rotate the pallet worm wheel; a planetary gear connected to the inner end of the rotating shaft to rotate with it; a lifting rod extending vertically downward from the lower part of the pallet and having a rack formed on its outer circumference to mesh with the planetary gear; and a support member fixed to the structural frame to prevent the lifting rod from wobbling during vertical movement, wherein when the pallet worm wheel rotates through the pallet handle in one direction or the opposite direction, the pallet worm gear rotates, and the rotating shaft also rotates, and the planetary gear connected to the inner end of the rotating shaft rotates, causing the lifting rod to move up and down along the meshing rack to adjust the position of the pallet.

[0019] Preferably, the tool operating device includes: a rotating rod rotatably assembled to a structural frame before the printing roller, the lower end of the rotating rod protruding downward through the structural frame, and including: a tool fixed to the rotating rod at predetermined intervals via a plurality of fasteners to be operated together and mounted on the upper part of the rotating rod; and a locking protrusion formed on a portion of the lower end, the locking protrusion protruding in a direction perpendicular to the longitudinal direction of the rotating rod; a circular fixing block rotatably mounted on the outside of the structural frame, and including: a rod insertion hole formed in the circular fixing block, the lower end of the rotating rod being inserted into the rod insertion hole; and a locking groove, the locking groove being positioned in one direction... The rotating rod has a locking protrusion inserted and connected to the circular fixed block through a locking groove in the portion of the circular fixed block defining the rod insertion hole; a cutting tool worm gear integrally formed with a portion of the circular fixed block along the outer peripheral surface of the circular fixed block; a cutting tool worm wheel meshing with the cutting tool worm gear to rotate; and a cutting tool shank configured to rotate the cutting tool worm wheel, wherein when the cutting tool worm wheel is rotated in one direction or the opposite direction by means of the cutting tool shank, the cutting tool worm gear rotates, and the circular fixed block also rotates together, and the rotating rod connected to the circular fixed block by the locking protrusion and the locking groove also rotates together, such that the cutting tool connected to the rotating rod selectively contacts or separates from the outer peripheral surface of the printing roller.

[0020] In the apparatus for manufacturing LED reflectors according to the present invention, release paper adhesive printing grooves are integrally formed on both sides of a printing roller having patterned printing grooves formed along its outer periphery and therein. This allows the release paper adhesive pattern to be printed simultaneously when the photoluminescent pattern is printed on the reflector by the printing roller. As a result, during the attachment of the release paper to the reflector, both ends of the release paper adhere to the release paper adhesive pattern, thereby preventing the release paper and the reflector from lifting off. This solves the problem of reduced adhesion caused by air flowing between the release paper and the reflector, and allows the reflector to be stored for a long time.

[0021] Furthermore, since the apparatus for manufacturing LED reflective sheets according to the present invention has an improved structure for controlling the tension of the sheet and for adjusting the gap between the rubber roller and the printing roller, as well as an improved structure for adjusting the position of the reflective liquid tray, optimal printing conditions can be maintained when printing photoluminescent patterns and release paper adhesive patterns on the reflective sheet, and the highest quality reflective sheets can be manufactured. Attached Figure Description

[0022] The above and other objects, features, and advantages of the invention will become more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0023] Figure 1 This is a schematic illustration of the structure of an apparatus for manufacturing an LED reflector according to the present invention;

[0024] Figure 2 This is a front view illustrating a portion of a printing roller used in an apparatus for manufacturing LED reflectors according to the present invention;

[0025] Figure 3 This is an enlarged front view illustrating the tension load element applied to the present invention;

[0026] Figure 4 This is a partial cross-sectional view shown for the purpose of describing the printing roller mounting apparatus applied to the present invention;

[0027] Figure 5 This is a partial front view shown to illustrate the rubber roller position adjustment device applied to the present invention;

[0028] Figure 6 This is a partial cross-sectional view shown to describe the tray position adjustment device applied to the present invention;

[0029] Figure 7 This is a partial cross-sectional view shown for the purpose of describing the tool operating device applied to the present invention; and

[0030] Figure 8 This is a front view illustrating a portion of a reflector manufactured using an apparatus for manufacturing LED reflectors according to the present invention. Detailed Implementation

[0031] The invention will now be described in detail with reference to the accompanying drawings.

[0032] Reference Figures 1 to 7The apparatus for manufacturing LED reflective sheets according to the present invention includes: a structural frame F; a reflective sheet supply spool 10 rotatably mounted in the middle of the structural frame F for supplying reflective sheets S; a printing unit 20 mounted in the front of the structural frame F for printing a photoluminescent pattern H1 and a release paper adhesive pattern H2 on the supplied reflective sheet S using a viscous reflective liquid; a dryer 30 mounted on the upper part of the structural frame F for drying the reflective sheet S as the reflective sheet S with the photoluminescent pattern H1 and the release paper adhesive pattern H2 printed on it passes by; and a winding spool 6. 0, which is rotatably mounted at the rear of the structural frame F, and wound in a roll form the reflective sheet S after it has been dried by passing through the dryer 30; release paper supply unit 70, which is configured to supply release paper P to the surface of the reflective sheet on which photolithographic patterns and release paper adhesive patterns are printed before the reflective sheet S is wound onto the winding roll 60, so that the release paper P and the reflective sheet S are wound together in their laminated state; and a plurality of guide rollers G, which are installed between the reflective sheet supply roll 10, the printing unit 20, the dryer 30 and the winding roll 60 to guide the reflective sheet S.

[0033] Here, the printing unit 20 includes a rubber roller 310 and a printing roller 210, which are arranged vertically to guide the reflective sheet S between them while rotating in the direction in which they engage with each other. The printing unit 20 is configured such that the printing roller 210 includes a pattern printing groove 214 therein into which a viscous reflective liquid for printing a photoluminescent pattern H1 is injected, and a release paper adhesive printing groove 216 therein into which a viscous reflective liquid for printing a release paper adhesive pattern H2 is injected. The pattern printing groove 214 and the release paper adhesive printing groove 216 are formed in the outer peripheral surface of the printing roller 210. A tray 410 for storing the viscous reflective liquid is installed below the printing roller 210, so that when a portion of the printing roller 210 is in the lower side... As the printing roller 210 rotates while being immersed in the viscous reflective liquid, the viscous reflective liquid is coated onto the outer peripheral surface of the printing roller 210. A cutter 510, having an end that contacts the outer peripheral surface of the printing roller, is mounted on one side of the printing roller 210. Thus, when the printing roller 210 coated with the viscous reflective liquid rotates, the viscous reflective liquid coated on the outer peripheral surface of the printing roller is removed, leaving only the viscous reflective liquid in the pattern printing groove 214 and the release paper adhesive printing groove 216. Therefore, when the reflective sheet S passes between the rubber roller 310 and the printing roller 210, the viscous reflective liquid remaining in the pattern printing groove 214 and the release paper adhesive printing groove 216 of the printing roller 210 is transferred to the reflective sheet S for printing thereon.

[0034] Furthermore, preferably, the pattern printing grooves 214 formed in the printing roller 210 are arranged in a grid pattern with multiple square grooves spaced apart from each other at predetermined intervals. However, the pattern printing grooves 214 are not limited to a grid pattern and can be formed with other patterns as needed.

[0035] Furthermore, the release liner adhesive printing grooves 216 are formed at predetermined intervals from the ends on both sides of the printing roller 210; that is, these grooves are formed in an annular shape along their outer circumferential surface. Specifically, preferably, the release liner adhesive printing grooves 216 applied in this invention have a constant width and include a first separator 218-1 and a second separator 218-2 formed parallel to each other at predetermined intervals in the middle of the width direction, such that the release liner adhesive printing grooves 216 are internally divided into first grooves 216-1, second grooves 216-2, and third grooves 216-3, thereby allowing the viscous reflective liquid to be reliably injected into the first grooves 216-1, second grooves 216-2, and third grooves 216-3 respectively without leaving any gaps. The reason for dividing the release liner adhesive printing grooves 216 into first grooves 216-1, second grooves 216-2, and third grooves 216-3 is to ensure accurate printing of the release liner adhesive printing grooves 216. In other words, if the release liner adhesive printing grooves 216 are not separate but integrally formed, the width of the release liner adhesive printing grooves 216 is relatively large, making it impossible to fill the viscous reflective liquid evenly. Therefore, the release liner adhesive pattern H2 cannot be accurately printed on the reflective sheet S and only partially forms the release liner adhesive pattern H2. However, the present invention improves upon this problem due to the aforementioned structure.

[0036] Furthermore, the release paper adhesive printing groove 216 can be configured to have a depth that decreases from the inner first groove 216-1 towards the third groove 216-3. Then, the viscous reflective liquid to be filled is formed with a thickness that decreases from the first groove 216-1 towards the third groove 216-3. The portion of the release paper adhesive pattern H2 to be printed on the reflective sheet S corresponding to the first groove 216-1 is printed the thickest, and the portion corresponding to the third groove 216-3 is printed the thinnest. In this case, excellent adhesion is maintained, and when the release paper P is removed from the reflective sheet S, the adhesion of the outer portion corresponding to the third groove 216-3 is weak, allowing for gradual peeling of the portions corresponding to the third groove 216-3, the second groove 216-2, and the first groove 216-1, thus demonstrating an effect that facilitates smooth separation of the release paper.

[0037] Next, the release paper supply unit 70 includes a release paper supply roll 72 configured to supply release paper, and a pair of laminating rolls 74 configured to rotate in the direction in which they engage with each other. Thus, as the reflective sheet S passes through the pair of laminating rolls 74, the release paper P is supplied between the pair of laminating rolls 74, such that the reflective sheet S and the release paper P are wound together on the winding roll 60 in their laminated state.

[0038] In addition to dryer 30, cooler 40 and auxiliary dryer 50 are also installed on the upper part of structural frame F, so that the reflective sheet S passing through the upper part of structural frame is dried once in dryer 30 by heating, cooled by cooler 40, and then dried a second time by auxiliary dryer 50. Of course, products known in the art can be applied to dryer 30, cooler 40 and auxiliary dryer 50, and therefore will not be described in detail.

[0039] Next, preferably, a tension load element 100 is installed in the portion of the structural frame through which the reflective sheet S supplied from the reflective sheet supply roll 10 passes, and the tension load element 100 is configured to continuously adjust the tension of the supplied reflective sheet S.

[0040] like Figure 3 As shown, the tension load element 100 applied to the present invention includes: a moving part 120, which is mounted on the upper part of the main body 110 to move slightly according to a signal received from a sensor part (not shown) configured to detect the tension of the reflector S moving back and forth; a bearing housing 140, which is mounted on the upper surface of the moving part 120; and a tension adjusting roller 130, which is mounted in the bearing housing 140 such that the reflector S is guided to the printing unit 20 by the tension adjusting roller 130.

[0041] Therefore, as the reflective sheet S supplied from the reflective sheet supply roll 10 is guided to the printing unit 20 via the tension adjusting roller 130, the size of the reflective sheet supply roll 10 continuously decreases. In this case, the sensor unit engaged with the tension adjusting roller 130 detects the tension of the reflective sheet S, thereby automatically and finely adjusting the position of the moving part 120, such as... Figure 3 As shown by the dashed line, this allows the reflective sheet S to be supplied to the printing unit 20 with a constant tension at all times.

[0042] Furthermore, the device of the present invention also includes: a printing roller mounting device 200 configured to rotatably mount the printing roller 210 in a structural frame F; a rubber roller position adjusting device 300 configured to adjust the degree of adhesion between the rubber roller 310 and the printing roller 210 by adjusting the position of the rubber roller 310; a tray position adjusting device 400 configured to adjust the height of the tray 410 to control the gap between the tray 410 and the printing roller 210; and a cutter operating device 500 configured to adjust the position of the cutter 510 such that the cutter 510 selectively comes into close contact with the printing roller 210.

[0043] First, the printing roller mounting device 200 is mounted on both sides of the structural frame F to support the two ends of the printing roller 210, and includes: a longitudinal moving rod 220, which is mounted to penetrate a portion of the structural frame F at a position corresponding to the printing roller 210, and has a male threaded portion formed on the outer circumferential surface at its rear end; a coupling member 250, which is integrally formed with the front end of the longitudinal moving rod 220, and has a coupling protrusion 252 protruding from its front surface; a support plate 230, which is fixed to the structural frame F such that the longitudinal moving rod 220 passes through; and a circular plate 240, which is rotatably connected to the front surface of the support plate 230, and has a hole formed in its center through which the longitudinal moving rod 220 passes, and a female threaded portion formed in the hole corresponding to the male threaded portion of the longitudinal moving rod 220. Therefore, when the circular plate 240 rotates, the longitudinal moving rod 220 will move forward or backward along the threads of the male and female threaded portions.

[0044] To mount the printing roller 210 using the printing roller mounting device 200, the printing roller 210 is positioned corresponding to the longitudinal moving rod 220, and then the circular plate 240 is rotated to move the longitudinal moving rod 220 forward. For this purpose, engagement holes 212 corresponding to the engagement protrusions 252 are formed at both ends of the printing roller 210. The printing roller 210 is positioned such that the engagement protrusions 252 are inserted into the engagement holes 212, and in this state, the longitudinal moving rod 220 is moved forward to fix the engagement protrusions 252 into the engagement holes 212.

[0045] Next, the rubber roller position adjustment device 300 is installed on both sides of the structural frame F to support the two ends of the rubber roller 310, and includes: a pair of movable plate guides 320, which are fixed to the structural frame F at predetermined intervals at positions corresponding to the rubber roller 310; a vertical movable plate 330, which is assembled between the pair of movable plate guides 320 to move vertically along the movable plate guides 320, and has a shaft insertion hole 332 formed in its middle, into which the shaft 312 of the rubber roller 310 is inserted, wherein the shaft insertion hole 332 is formed to be open in one direction so that the shaft 312 of the rubber roller 310 can be inserted; a cover plate 340, which is fixed to a surface having an opening communicating with the shaft insertion hole 332 of the vertical movable plate 330, thereby selectively covering the opening; and a clamping bolt 3. 42, which is fastened to pass through the cover plate 340, and its end is mounted to be in close contact with the shaft of the rubber roller 310 to keep the shaft 312 of the rubber roller 310 from moving along the shaft insertion hole 332; a vertical rod 350, which extends upward from the upper part of the vertical moving plate 330 and has a male threaded portion formed on its outer peripheral surface; a rubber roller worm gear 360, which is rotatably mounted in the structural frame F at a position corresponding to the middle of the vertical rod 350, and has a hollow portion, in the center of which a female threaded portion is formed to be threaded to the male threaded portion of the vertical rod, so that the vertical rod 350 is fastened therethrough; a rubber roller worm wheel 370, which is rotatably mounted in the structural frame F and meshes with the rubber roller worm gear 360; and a rubber roller handle 380, which is configured to rotate the rubber roller worm wheel 370.

[0046] Therefore, to mount the rubber roller 310 onto the vertical moving plate 330, the shaft of the rubber roller 310 can be inserted into the shaft insertion hole 332 of the vertical moving plate 330, and then secured by tightening it with the clamping bolt 342 to prevent movement. To adjust the vertical position of the rubber roller 310, when the rubber roller worm gear 370 is rotated in one direction or the opposite direction via the rubber roller handle 380, the rubber roller worm gear 360 rotates, and then the vertical rod 350 moves up and down along the thread. The vertical moving plate 330 also moves up and down together with the vertical rod 350 to adjust the position of the rubber roller 310.

[0047] Next, the pallet position adjustment device 400 is installed on both sides of the structural frame F to support the two ends of the pallet 410, and includes: a rotating shaft 420, which is installed to pass through the structural frame F below the pallet 410; and a pallet worm gear 430, which is connected to the outer end of the rotating shaft 420 (i.e., Figure 6 The right end of the rotating shaft 420; a tray worm gear 440, which is mounted to mesh with a tray worm gear 430; a tray handle 450, which is configured to rotate the tray worm gear 440; and a planetary gear 460, which is connected to the inner end of the rotating shaft 420 (i.e., the right end of the rotating shaft 420). Figure 6 The left end of the tray 410 is rotated together with the rotating shaft 420; the lifting rod 470 extends vertically downward from the lower part of the tray 410 and has a rack 472 formed on its outer circumferential surface to mesh with the planetary gear 460; and the support member 480 is fixed to the structural frame F to keep the lifting rod 470 from swaying during up and down movement.

[0048] Therefore, in order to adjust the vertical position of the pallet 410, the pallet worm gear 440 can be rotated in one direction or the opposite direction via the pallet handle 450. Then, as the pallet worm gear 430 rotates, the rotating shaft 420 also rotates, and the planetary gear 460 connected to the inner end of the rotating shaft 420 rotates, causing the lifting rod 470 to move up and down along the meshing rack 472. Then the pallet 410 also moves up and down together with the lifting rod 470 to adjust its position.

[0049] Next, the tool operating device 500 includes: a rotating rod 520, which is rotatably assembled to the structural frame F in front of the printing roller 210, and whose lower end extends outward through the structural frame F (i.e., Figure 7 The structure includes a downward-protruding component and includes a cutting tool 510, which is fixed to the cutting tool rotating rod 520 at predetermined intervals via a plurality of fasteners 512 to be operated together; a locking protrusion 522, formed on the lower end portion, protruding in a direction perpendicular to the longitudinal direction of the rotating rod 520; and a circular fixing block 530, rotatably mounted on the outside of the structural frame F, including a rod insertion hole 532 formed in the circular fixing block 530 and a through hole. The lower end of the rotating rod 520 is inserted into the rod insertion hole 532 through a locking groove 534 formed in a portion of the rod insertion hole 532 extending in one direction, and the locking protrusion 522 of the rotating rod 520 is inserted and connected through the locking groove 534; a tool worm gear 540 is integrally formed with a portion of the circular fixing block 530 along its outer peripheral surface; a tool worm wheel 550 meshes with the tool worm gear 540 to rotate; and a tool shank 560 is configured to rotate the tool worm wheel 550.

[0050] Therefore, in order to adjust the position of the cutter 510, when the cutter worm gear 550 is rotated in one direction or the opposite direction via the cutter shank 560, the cutter worm gear 540 rotates, and the circular fixing block 530 also rotates together. The rotating rod 520, which is connected to the circular fixing block 530 via the locking protrusion 522 and the locking groove 534, also rotates together, so that the cutter connected to the rotating rod 520 selectively contacts or separates from the outer peripheral surface of the printing roller 210.

[0051] Furthermore, each of the reflective sheet supply roll 10, printing roll 210, release paper supply roll 72, and winding roll 60 installed in the device of the present invention is configured to rotate by power received from a motor via a power transmission device. Conventional chain and sprocket methods can be applied to the present invention as power transmission methods.

[0052] The operation and effects of the apparatus for manufacturing LED reflectors according to the present invention, constructed as described above, will now be described.

[0053] In the apparatus for manufacturing LED reflectors according to the present invention, a reflector S supplied from a reflector supply roll 10 passes through a printing unit 20 consisting of a rubber roller 310 and a printing roller 210, and during this process, a photochromic pattern H1 and a release paper adhesive pattern H2 are printed on the surface of the reflector S, such as... Figure 8 As shown.

[0054] In other words, a tray 410 for storing the viscous reflective liquid is installed at the lower part of the printing roller 210, and when the printing roller 210 rotates while its lower part is immersed in the viscous reflective liquid, the viscous reflective liquid is coated onto the outer peripheral surface of the printing roller 210. Furthermore, the viscous reflective liquid coated on the outer peripheral surface of the printing roller is removed by a cutter 510, leaving only the viscous reflective liquid in the pattern printing groove 214 and the release paper adhesive printing groove 216. In this state, as the printing roller 210 rotates, the viscous reflective liquid remaining in the pattern printing groove 214 and the release paper adhesive printing groove 216 of the printing roller 210 is transferred to the reflective sheet S passing between the rubber roller 310 and the printing roller for printing.

[0055] When the photochromic pattern H1 and the release paper adhesive pattern H2 are printed on the reflective sheet S as described above, the reflective sheet is dried while passing through the dryer 30, and then wound onto the winding spool 60 for discharge. At this time, the reflective sheet S passes through a pair of laminating rollers 74 to laminate with the release paper P, and is wound onto the winding spool 60 in the laminated state.

[0056] That is, when the release paper P is supplied from the release paper supply roll 72 to a pair of laminating rolls 74 rotating in a direction in which they mesh with each other, the reflective sheet S and the release paper P are laminated together as they pass between the laminating rolls 74 and are wound onto the winding roll 60. Then, when the release paper P is laminated onto the reflective sheet S, it adheres to the photolithographic pattern H1 and the release paper adhesive pattern H2 formed on the reflective sheet S to maintain the laminated state.

[0057] When the reflective sheet S is manufactured in this manner, the present invention has the following advantages: the tension of the reflective sheet S is continuously adjusted by the tension load element 100, allowing printing to be performed under tension; the printing roller 210 can be installed and replaced by the printing roller mounting device 200; the position of the rubber roller 310 is adjusted by the rubber roller position adjustment device 300 to control the degree of adhesion with the printing roller 210; and the height of the tray 410 can be adjusted by the tray position adjustment device 400 to control the gap between it and the printing roller 210. Of course, the cutter 510 only comes into close contact with the printing roller 210 when the printing operation is performed by the cutter operating device 500.

[0058] like Figure 8 As shown, the LED reflector manufactured in this manner is characterized by the fact that when the photoluminescent pattern H1 is printed on the reflector S by the printing roller 210, the release paper adhesive pattern H2 is also printed. During the attachment of the release paper P to the reflector S, both ends of the release paper P adhere to the release paper adhesive pattern H2. Therefore, there is no lifting phenomenon between the release paper P and the reflector S, which solves the problem of reduced adhesion caused by air flowing between the release paper and the reflector. The reflector can also be stored for a long time.

[0059] Thus, the invention has been illustrated and described in conjunction with specific embodiments, but any person skilled in the art will readily understand that various modifications and substitutions can be made without departing from the spirit and scope of the invention as expressed in the claims.

[0060] Cross-references to related applications

[0061] This application claims priority to Korean Patent Application No. 10-2024-0011814, filed on January 25, 2024, the entire contents of which are incorporated herein by reference.

[0062] [List of Labels in the Attached Image]

[0063] 10: Reflector supply roll

[0064] 20: Printing Unit

[0065] 30: Dryer

[0066] 40: Cooler

[0067] 50: Auxiliary dryer

[0068] 60: Winding spool

[0069] 70: Release paper supply unit

[0070] 72: Release paper supply roll

[0071] 74: Laminating Roller

[0072] 100: Tension load element

[0073] 200: Printing roller mounting device

[0074] 210: Printing roller

[0075] 214: Pattern Printing Groove

[0076] 216: Release paper adhesive printing grooves

[0077] 300: Rubber roller position adjustment device

[0078] 310: Rubber roller

[0079] 400: Pallet position adjustment device

[0080] 410: Pallet

[0081] 500: Tool operating device

[0082] 510: Knives

[0083] F: Structural framework

[0084] H1: Photographic pattern

[0085] H2: Release paper adhesive pattern

[0086] P: Release paper

[0087] S: Reflective sheet

Claims

1. An apparatus for manufacturing LED reflectors, the apparatus comprising: Structural framework; A reflector supply spool is rotatably mounted in the middle of the structural frame to supply reflectors. A printing unit, which is installed at the front of the structural frame, prints photoluminescent patterns and release paper adhesive patterns on the supplied reflective sheet using a viscous reflective liquid. A dryer, mounted on the upper part of the structural frame, dries the reflective sheet on which the photoluminescent pattern and the release paper adhesive pattern are printed as they pass; a winding spool, rotatably mounted in the rear of the structural frame, winds the reflective sheet dried as it passes through the dryer; a release paper supply unit configured to supply release paper to the surface of the reflective sheet, on which the photoluminescent pattern and the release paper adhesive pattern are printed, before winding the reflective sheet onto the winding spool, such that the release paper and the reflective sheet are wound together in their laminated state; and a plurality of guide rollers mounted between the reflective sheet supply spool, the printing unit, the dryer, and the winding spool to guide the reflective sheet. The printing unit includes a rubber roller and a printing roller, the rubber roller and the printing roller being arranged vertically to guide the reflective sheet between them when rotating in a direction in which they engage with each other, and the printing unit being configured such that: the printing roller includes a pattern printing groove and a release paper adhesive printing groove formed in the outer peripheral surface of the printing roller, the pattern printing groove being filled with a viscous reflective liquid for printing the photoluminescent pattern, and the release paper adhesive printing groove being filled with the viscous reflective liquid for printing the release paper adhesive pattern; a tray for storing the viscous reflective liquid is mounted below the printing roller, so that when a portion of the lower side of the printing roller is immersed in the viscous reflective liquid... As the printing roller rotates, the viscous reflective liquid is coated onto the outer peripheral surface of the printing roller. A cutter with an end contacting the outer peripheral surface of the printing roller is mounted on one side of the printing roller. As the printing roller coated with the viscous reflective liquid rotates, the viscous reflective liquid coated on the outer peripheral surface of the printing roller is removed, leaving only the viscous reflective liquid in the pattern printing grooves and the release paper adhesive printing grooves. Therefore, when the reflective sheet passes between the rubber roller and the printing roller, the viscous reflective liquid remaining in the pattern printing grooves and the release paper adhesive printing grooves of the printing roller is transferred to the reflective sheet for printing on the reflective sheet. The release paper supply unit includes a release paper supply roll configured to supply release paper and a pair of laminating rollers configured to rotate in a direction in which they engage with each other. Thus, when the reflective sheet passes the pair of laminating rollers, the release paper is supplied between the pair of laminating rollers, causing the reflective sheet and the release paper to be wound together on the winding roll in their laminated state. The device also includes: A tension load element is installed in the structural frame in the section through which the reflective sheet supplied from the reflective sheet supply spool passes, to continuously adjust the tension of the supplied reflective sheet. A printing roller mounting device configured to rotatably mount the printing roller in the structural frame; A rubber roller position adjustment device is configured to adjust the degree of adhesion between the rubber roller and the printing roller by adjusting the position of the rubber roller. A tray position adjustment device configured to adjust the height of the tray to control the gap between the tray and the printing roller; A tool operating device configured to adjust the position of the tool so that the tool selectively comes into close contact with the printing roller.

2. The apparatus for manufacturing LED reflectors according to claim 1, The release paper adhesive printing groove formed in the printing roller has a constant width and includes a first partition and a second partition formed parallel to each other at a predetermined interval in the middle of the width direction, such that the release paper adhesive printing groove is divided from the inside into a first groove, a second groove and a third groove, thereby allowing the viscous reflective liquid to be reliably injected into the first groove, the second groove and the third groove respectively without leaving any gaps.

3. The apparatus for manufacturing LED reflectors according to claim 1, The printing roller mounting devices are respectively installed on both sides of the structural frame to support both ends of the printing roller, and the printing roller mounting devices include: A longitudinal moving rod is mounted to pass through a portion of the structural frame at a position corresponding to the printing roller, and the rear end portion of the longitudinal moving rod has a male threaded portion formed on the outer peripheral surface; A connector integrally formed with the front end of the longitudinal moving rod and having a connector protrusion extending from the front surface of the connector; A support plate, which is fixed to the structural frame, through which the longitudinal moving rod passes; as well as A circular plate, rotatably connected to the front surface of the support plate, has a hole formed in the center of the circular plate through which the longitudinal moving rod passes, and a female threaded portion formed in the hole corresponding to the male threaded portion of the longitudinal moving rod. When the circular plate rotates, the longitudinal moving rod moves forward or backward along the thread; and engagement holes corresponding to the engagement protrusions are formed at both ends of the printing roller, so that the printing roller is positioned such that the engagement protrusions are inserted into the engagement holes, and in this state, the longitudinal moving rod moves forward so that the engagement protrusions are inserted into the engagement holes and fixed to the engagement holes.

4. The apparatus for manufacturing LED reflectors according to claim 1, in, The rubber roller position adjustment device is respectively installed on both sides of the structural frame to support both ends of the rubber roller, and the rubber roller position adjustment device includes: A pair of movable plate guides, which are fixed to the structural frame at predetermined intervals at positions corresponding to the rubber roller; A vertical moving plate, which is assembled and mounted between the pair of moving plate guides for vertical movement along the moving plate guides, and has a shaft insertion hole formed in the middle of the vertical moving plate, into which the shaft of the rubber roller is inserted, wherein the shaft insertion hole is formed to be open in one direction so that the shaft of the rubber roller can be inserted; A cover plate is fixed to a surface having an opening communicating with the shaft insertion hole of the vertically moving plate, thereby selectively covering the opening; A clamping bolt is tightened to penetrate the cover plate, and the end of the clamping bolt is mounted to make close contact with the shaft of the rubber roller to prevent the shaft of the rubber roller from moving along the shaft insertion hole; A vertical rod extending upward from the upper part of the vertical moving plate and having a male threaded portion formed on the outer peripheral surface of the vertical rod; A rubber roller worm gear is rotatably mounted in the structural frame at a position corresponding to the middle of the vertical rod, and has a hollow portion, in the center of which a female thread portion is formed that is threaded to the male thread portion of the vertical rod, so that the vertical rod is fastened thereby. A rubber roller worm gear, rotatably mounted in the structural frame and meshing with the rubber roller worm gear; and The rubber roller shank is configured to rotate the rubber roller worm gear, and The shaft of the rubber roller is inserted into the shaft insertion hole of the vertical moving plate and then fixed by a clamping bolt to prevent movement. In this state, when the rubber roller worm gear is rotated in one direction or the opposite direction by the rubber roller handle, the rubber roller worm gear rotates, and then the vertical rod moves up and down along the thread. The vertical moving plate also moves up and down together with the vertical rod to adjust the position of the rubber roller.

5. The apparatus for manufacturing LED reflectors according to claim 1, in, The pallet position adjustment device is respectively installed on both sides of the structural frame to support both ends of the pallet, and the pallet position adjustment device includes: A rotating shaft, which is mounted beneath the tray and extends through the structural frame; A tray worm gear, which is connected to the outer end of the rotating shaft to rotate together with the rotating shaft; A tray worm gear, which is mounted to mesh with the tray worm gear; A tray handle configured to rotate the tray worm gear; A planetary gear, which is connected to the inner end of the rotating shaft to rotate together with the rotating shaft; A lifting rod extending vertically downward from the lower part of the tray and having a rack formed on the outer circumferential surface of the lifting rod for meshing with the planetary gear; and A support member, fixed to the structural frame, is provided to prevent the lifting rod from swaying during vertical movement. When the pallet worm gear rotates through the pallet handle in one direction or the opposite direction, the pallet worm gear rotates, and the rotating shaft also rotates. The planetary gear connected to the inner end of the rotating shaft rotates, causing the lifting rod to move up and down along the meshing rack to adjust the position of the pallet.

6. The apparatus for manufacturing LED reflectors according to claim 1, The tool operating device includes: A rotating rod, rotatably assembled to the structural frame in front of the printing roller, the lower end of the rotating rod protruding downward through the structural frame, and comprising: a cutter fixed to the rotating rod at predetermined intervals via a plurality of fasteners to be operated together; and a locking protrusion formed on a portion of the lower end, the locking protrusion protruding in a direction perpendicular to the longitudinal direction of the rotating rod; A circular fixing block is rotatably mounted on the outside of the structural frame, and the circular fixing block includes: a rod insertion hole formed in the circular fixing block, into which the lower end of the rotating rod is inserted; and a locking groove formed in the portion of the circular fixing block defining the rod insertion hole by extending through in one direction, through which the locking protrusion of the rotating rod is inserted and engaged; A cutting tool worm gear, wherein the cutting tool worm gear is integrally formed with a portion of the circular fixing block along the outer peripheral surface of the circular fixing block; A tool worm gear, which meshes with the tool worm gear to rotate; and The tool shank is configured to rotate the tool worm gear. When the tool worm gear is rotated in one direction or the opposite direction via the tool holder, the tool worm gear rotates, and the circular fixing block also rotates together. The rotating rod connected to the circular fixing block via the locking protrusion and the locking groove also rotates together, so that the tool connected to the rotating rod selectively contacts or separates from the outer peripheral surface of the printing roller.

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