An apparatus and production method for continuously producing a vacuum microprism retroreflective film

Abstract

The present invention relates to the technical field of microprism reflective films, and specifically relates to a device and a production method for continuously producing microprism reflective films in a vacuum manner, including an outer frame. Inside the outer frame, there are a vacuum chamber and a vacuum pump. Inside the vacuum chamber, two groups of support frames are fixedly connected. Inside the vacuum chamber, a feeding roller, a first tensioning roller, a heating roller, a second tensioning roller, and a winding roller are rotatably connected. A thermoplastic film is wound around the outer side of the feeding roller. The top end of the inner wall of the vacuum chamber is fixedly connected with a hydraulic rod, and the lower end of the hydraulic rod is fixedly connected with a mold. The heating roller is flush with the second tensioning roller. A support assembly is arranged at the upper end of the support frame. An inclined plate is fixedly connected between the two groups of support frames. A collection box is fixedly connected inside the vacuum chamber, and the collection box is located below the inclined plate. The present invention can use a ring knife to cut the shaped thermoplastic film, reducing subsequent cutting operations and saving manpower and material resources.

Description

Technical Field

[0001] The present invention relates to the technical field of microprism reflective films, and particularly to an apparatus and a production method for continuously producing microprism reflective films in a vacuum manner. Background Art

[0002] For a microprism reflective film or a microprism reflective sheet, the microprism stripes on its surface, after being irradiated by light, the reflected light is refracted and converged by the microprisms to form a bright light, and there is a conspicuous mark when used in a night environment and irradiated by light. The existing production method of the microprism reflective film or the reflective sheet is to heat the substrate, and press the substrate with a plate-shaped mold having microprism stripes on its surface or press the substrate on the plate-shaped mold for shaping. After the substrate is shaped and cooled, microprism stripes can be formed on the surface. After the existing microprism reflective film is processed, it needs to be cut into a certain shape again to make the final product. Moreover, when the pressure is too large when the mold presses the substrate during the shaping process of the reflective film, the substrate is easily damaged, and when the pressure is too small, microprism stripes cannot be formed. For this reason, we propose an apparatus and a production method for continuously producing microprism reflective films in a vacuum manner. Summary of the Invention

[0003] The purpose of the present invention is to solve the disadvantages existing in the background art, and to propose an apparatus and a production method for continuously producing microprism reflective films in a vacuum manner.

[0004] To achieve the above object, the technical solution adopted by the present invention is: An apparatus for continuously producing microprism reflective films in a vacuum manner, including an outer frame. Inside the outer frame, a vacuum chamber and a vacuum pump are provided. Inside the vacuum chamber, two groups of support frames are fixedly connected. Inside the vacuum chamber, a feeding roller, a first tensioning roller, a heating roller, a second tensioning roller, and a winding roller are rotatably connected. A thermoplastic film is wound around the outer side of the feeding roller. At the top end of the inner wall of the vacuum chamber, a hydraulic rod is fixedly connected, and a mold is fixedly connected to the lower end of the hydraulic rod. The heating roller is flush with the second tensioning roller. At the upper end of the support frame, a support assembly is provided. Between the two groups of support frames, an inclined plate is fixedly connected. Inside the vacuum chamber, a collection box is fixedly connected, and the collection box is located below the inclined plate.

[0005] Preferably, the support assembly includes a mounting plate fixedly connected to the support frame. At the upper end of the mounting plate, a blanking mechanism and a support mechanism are fixedly connected. The blanking mechanism includes a top plate, which is located between the heating roller and the second tensioning roller and is flush with the second tensioning roller. The mold is adapted to the top plate, and a ring knife is provided on the outer side of the mold.

[0006] Preferably, a support cylinder is fixedly connected to the upper end of the mounting plate. A sliding rod is slidably connected to the inner side of the support cylinder. A support plate is fixedly connected to the outer side of the sliding rod. The support plate is L-shaped. A ring cylinder is fixedly connected to the upper end of the support plate. A first rotating shaft is rotatably connected to the inner side of the ring cylinder. A first connecting column is fixedly connected between the two first rotating shafts. A second connecting column is installed at the upper end of the first connecting column. The second connecting column is fixedly connected to the top plate.

[0007] Preferably, a threaded cylinder is rotatably connected to the outer side of the second connecting column. A rotating groove is formed in the outer side of the second connecting column. A rotating ring is fixedly connected to the inner side of the threaded cylinder. The rotating ring is rotatably connected to the inner side of the rotating groove. A threaded head is fixedly connected to the upper end of the first connecting column. The threaded head is threadedly connected to the threaded cylinder.

[0008] Preferably, a first elastic sheet is arranged on the inner side of the ring cylinder. The first elastic sheet is arranged on the outer side of the first rotating shaft. A first spring is fixedly connected to the inner side of the support cylinder. The upper end of the first spring is fixedly connected to a first retaining piece. The first retaining piece is fixedly connected to the sliding rod. An electric push rod is fixedly connected to the inner side of the support cylinder. The electric push rod is located inside the first spring.

[0009] Preferably, four limiting plates are fixedly connected to the outer side of the first connecting column. A limiting groove is fixedly connected to the lower end of the top plate. The upper ends of the limiting plates are inserted into the inner side of the limiting groove. Two limiting frames are fixedly connected to the upper end of the support cylinder. The limiting plates are slidably connected to the inner sides of the limiting frames. Two limiting blocks are fixedly connected to the inner side of the limiting frame close to the inclined plate side. The opposite sides of the limiting blocks are arc-shaped.

[0010] Preferably, the support mechanism includes two ring frames fixedly connected to the upper end of the mounting plate. A sliding shaft is fixedly connected to the inner side of the ring frame. A connecting rod is slidably connected to the outer side of the sliding shaft. The two connecting rods are respectively rotatably connected to the two first rotating shafts. Two symmetrically arranged outer shells are fixedly connected to the inner side of the ring frame. A blocking block is slidably connected to one end of the outer shell. Two pressing blocks are rotatably connected to the outer side of the connecting rod. The upper ends of the pressing blocks are arc-shaped. The blocking block is conical.

[0011] Preferably, a connecting shaft is slidably connected to the inner side of the outer shell. The connecting shaft is fixedly connected to the blocking block. A second retaining piece is fixedly connected to one end of the connecting shaft. The second retaining piece is located inside the outer shell. A second spring is fixedly connected to one end of the second retaining piece. The second spring is located inside the outer shell.

[0012] Preferably, two sets of connectors are fixedly connected to both sides of the connecting rod, a second rotating shaft is rotatably connected between the two sets of connectors, a second elastic sheet is arranged inside the connector, the second elastic sheet surrounds the outside of the second rotating shaft, the second rotating shaft is fixedly connected to the pressing block, sliding openings are formed on both sides of the connecting rod, a sliding sheet is fixedly connected to one side of the pressing block, the sliding sheet is located inside the sliding opening, and the lower end of the sliding sheet is in close contact with the bottom end of the inner wall of the sliding opening.

[0013] A production method for continuously producing a vacuum microprism reflective film, comprising:

[0014] Step 1: Install the thermoplastic film on the feeding roller, then pull the thermoplastic film so that the thermoplastic film passes through the lower end of the first tensioning roller, and then sequentially passes through the upper ends of the heating roller and the second tensioning roller, and then wind the thermoplastic film through the winding roller;

[0015] Step 2: Start the hydraulic rod to push the mold downward, use the mold to shape the thermoplastic film, and at the same time use the circular knife to cut the shaped thermoplastic film, and use the top plate to support the thermoplastic film to facilitate the mold to shape the thermoplastic film;

[0016] Step 3: When the mold presses down the top plate, the second connecting column will drive the first connecting column through the first connecting column to drive the connecting rod to drive the pressing block to press the stopper. When the pressure of the mold reaches a certain level, the pressing block will press the stopper to press the connecting shaft to move inward the housing, so that the second retaining piece presses the second spring to contract. At this time, the sliding opening will block the sliding piece to prevent the pressing block from rotating;

[0017] Step 4: When the pressing block is separated from the stopper, the first connecting column will press the support plate through the first rotating shaft to slide the sliding rod inward the support cylinder, so that the first retaining piece presses the first spring to contract. When the mold moves upward, the first spring will push the sliding rod upward, so that the first connecting column moves upward, so that the limiting plate slides upward inside the limiting frame. At this time, the limiting block will block a set of limiting plates, so that the first rotating shaft rotates inside the ring cylinder, so that the top plate deflects to one side, so that the cut thermoplastic film slides into the inside of the collection box through the inclined plate;

[0018] Step 5: During the upward sliding process of the connecting rod, the pressing block will rotate downward under the pressure of the stopper. At this time, the sliding piece will rotate inside the sliding opening. When the pressing block is separated from the stopper, the pressing block will rotate back to its original position under the action of the second elastic sheet.

[0019] Compared with the prior art, the present invention provides a device and a production method for continuously producing a vacuum microprism reflective film, having the following beneficial effects:

[0020] 1. The device and production method for continuously producing microprism retroreflective film in a vacuum state can press the thermoplastic film tightly through the first tension roller to make the thermoplastic film taut, heat the thermoplastic film by using the heating roller, make the thermoplastic film flat through the second tension roller, which is convenient for the mold to press the edges of the thermoplastic film, wind up the thermoplastic film through the winding roller, can conveniently install the top plate on the first connecting column by using the threaded cylinder, can conveniently rotate the rotating ring through the rotating groove, and can extract the air inside the vacuum chamber by using the vacuum pump to make the vacuum chamber in a vacuum state.

[0021] 2. The device and production method for continuously producing microprism retroreflective film in a vacuum state can shape the thermoplastic film by using the mold, cut the shaped thermoplastic film by using the ring knife to reduce subsequent cutting steps, support the thermoplastic film by using the top plate, which is convenient for the mold to shape the thermoplastic film. When the mold presses down the top plate to move, it will drive the pressing block to press the blocking block. When the pressure of the mold reaches a certain level, the pressing block will press the blocking block to make the pressing block press the connecting shaft to move inside the housing, so that the second blocking piece presses the second spring to contract, and can block the sliding piece by using the sliding opening to prevent the pressing block from rotating.

[0022] 3. The device and production method for continuously producing microprism retroreflective film in a vacuum state can press the sliding rod to slide inside the support cylinder through the support plate, so that the first blocking piece presses the first spring to contract. After the mold moves up, the first spring will push the sliding rod up, so that the first connecting column moves up. The electric push rod can assist the first spring to push the first blocking piece up, so that the limiting plate slides up inside the limiting frame. The first rotating shaft can be blocked by the limiting block to rotate inside the ring cylinder, so that the top plate deflects to one side, and the cut thermoplastic film slides down to the inside of the collection frame through the inclined plate, which is convenient for the cut thermoplastic film to slide and be collected. During the upward sliding process of the connecting rod, the pressing block will rotate downward under the pressure of the blocking block. At this time, the sliding piece will rotate inside the sliding opening. When the pressing block separates from the blocking block, the pressing block will rotate back to its original position under the action of the second elastic piece. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a cross-section of the present invention Figure 1 ;

[0025] Figure 3 It is a cross-section of the present invention Figure 2 ;

[0026] Figure 4 It is a schematic diagram of a part of the structure of the present invention Figure 1 ;

[0027] Figure 5 It is a schematic diagram of a part of the structure of the present invention Figure 2 ;

[0028] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of part A in the present invention;

[0029] Figure 7 Schematic diagram of part of the structure of the present invention Figure 3 ;

[0030] Figure 8 Schematic diagram of part of the structure of the present invention Figure 4 ;

[0031] Figure 9 Schematic diagram of the exploded structure of the support component of the present invention;

[0032] Figure 10 Schematic diagram of the structure of the blanking mechanism of the present invention;

[0033] Figure 11 Cross-section of the blanking mechanism of the present invention Figure 1 ;

[0034] Figure 12 For the present invention Figure 11 Schematic diagram of the enlarged structure of part B in the present invention;

[0035] Figure 13 Cross-section of the blanking mechanism of the present invention Figure 2 ;

[0036] Figure 14 For the present invention Figure 13 Schematic diagram of the enlarged structure of part C in the present invention;

[0037] Figure 15 Schematic diagram of the support mechanism of the present invention;

[0038] Figure 16 Schematic diagram of part of the structure of the support mechanism of the present invention Figure 1 ;

[0039] Figure 17 For the present invention Figure 16 Schematic diagram of the enlarged structure of part D in the present invention;

[0040] Figure 18 Schematic diagram of part of the structure of the support mechanism of the present invention Figure 2 ;

[0041] Figure 19 For the present invention Figure 18 Schematic diagram of the enlarged structure of part E in the present invention.

[0042] In the figure: 1, external frame; 2, vacuum box; 3, vacuum pump; 4, support frame; 5, support assembly; 51, mounting plate; 52, blanking mechanism; 521, support cylinder; 522, sliding rod; 523, support plate; 524, annular cylinder; 525, first rotating shaft; 526, first connecting column; 527, second connecting column; 528, top plate; 529, threaded cylinder; 5210, rotating groove; 5211, rotating ring; 5212, threaded head; 5213, limiting plate; 5214, limiting groove; 5215, limiting frame; 5216, limiting block; 5217, first retaining piece; 5218, first spring; 5219, electric push rod; 5220, first elastic piece; 53, support mechanism; 531, annular frame; 532, sliding shaft; 533, connecting rod; 534, housing; 535, stop block; 536, pressing block; 537, connecting shaft; 538, second retaining piece; 539, second spring; 5310, connecting head; 5311, second rotating shaft; 5312, second elastic piece; 5313, sliding opening; 5314, sliding piece; 6, hydraulic rod; 7, mold; 8, feeding roller; 9, first tensioning roller; 10, heating roller; 11, second tensioning roller; 12, winding roller; 13, thermoplastic film; 14, inclined plate; 15, collection box; 16, annular knife. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0044] Please refer to Figure 1 - Figure 19 A device for continuously producing microprism retroreflective film in a vacuum type, including an external frame 1. A vacuum box 2 and a vacuum pump 3 are arranged inside the external frame 1. Two groups of support frames 4 are fixedly connected inside the vacuum box 2. A feeding roller 8, a first tensioning roller 9, a heating roller 10, a second tensioning roller 11, and a winding roller 12 are rotatably connected inside the vacuum box 2. A thermoplastic film 13 is wound around the outside of the feeding roller 8. A hydraulic rod 6 is fixedly connected to the top end of the inner wall of the vacuum box 2. A mold 7 is fixedly connected to the lower end of the hydraulic rod 6. The heating roller 10 is flush with the second tensioning roller 11. A support assembly 5 is arranged at the upper end of the support frame 4. An inclined plate 14 is fixedly connected between the two groups of support frames 4. A collection box 15 is fixedly connected inside the vacuum box 2. The collection box 15 is located below the inclined plate 14.

[0045] In this embodiment, the support assembly 5 includes a mounting plate 51 fixedly connected to the support frame 4. A blanking mechanism 52 and a support mechanism 53 are fixedly connected to the upper end of the mounting plate 51. The blanking mechanism 52 includes a top plate 528. The top plate 528 is located between the heating roller 10 and the second tensioning roller 11 and is flush with the second tensioning roller 11. The mold 7 is adapted to the top plate 528. An annular knife 16 is arranged outside the mold 7.

[0046] Specifically, a core cutter 16 is used to cut the shaped thermoplastic film 13, reducing subsequent cutting steps. The top plate 528 can support the thermoplastic film 13, and the second tensioning roller 11 can flatten the thermoplastic film 13, facilitating the edge pressing of the thermoplastic film 13 by the mold 7.

[0047] In this embodiment, a support cylinder 521 is fixedly connected to the upper end of the mounting plate 51. A sliding rod 522 is slidably connected to the inner side of the support cylinder 521. A support plate 523 is fixedly connected to the outer side of the sliding rod 522. The support plate 523 is L-shaped. A ring cylinder 524 is fixedly connected to the upper end of the support plate 523. A first rotating shaft 525 is rotatably connected to the inner side of the ring cylinder 524. A first connecting column 526 is fixedly connected between the two groups of first rotating shafts 525. A second connecting column 527 is installed at the upper end of the first connecting column 526. The second connecting column 527 is fixedly connected to the top plate 528.

[0048] A threaded cylinder 529 is rotatably connected to the outer side of the second connecting column 527. A rotating groove 5210 is formed in the outer side of the second connecting column 527. A rotating ring 5211 is fixedly connected to the inner side of the threaded cylinder 529. The rotating ring 5211 is rotatably connected to the inner side of the rotating groove 5210. A threaded head 5212 is fixedly connected to the upper end of the first connecting column 526. The threaded head 5212 is threadedly connected to the threaded cylinder 529.

[0049] Specifically, the threaded cylinder 529 can facilitate the installation of the top plate 528 on the first connecting column 526, and the rotating groove 5210 can facilitate the rotation of the rotating ring 5211.

[0050] In this embodiment, a first elastic piece 5220 is arranged inside the ring cylinder 524. The first elastic piece 5220 is arranged on the outer side of the first rotating shaft 525. A first spring 5218 is fixedly connected to the inner side of the support cylinder 521. A first retaining piece 5217 is fixedly connected to the upper end of the first spring 5218. The first retaining piece 5217 is fixedly connected to the sliding rod 522. An electric push rod 5219 is fixedly connected to the inner side of the support cylinder 521. The electric push rod 5219 is located inside the first spring 5218.

[0051] Specifically, the first elastic piece 5220 can facilitate the rotation of the first rotating shaft 525. The first spring 5218 can push the first retaining piece 5217 upward, facilitating the upward movement of the sliding rod 522. The electric push rod 5219 can assist the first retaining piece 5217 to push the sliding rod 522 upward.

[0052] In this embodiment, four groups of limiting plates 5213 are fixedly connected to the outer side of the first connecting column 526. A limiting groove 5214 is fixedly connected to the lower end of the top plate 528. The upper ends of the limiting plates 5213 are inserted into the inner side of the limiting groove 5214. Two groups of limiting frames 5215 are fixedly connected to the upper end of the support cylinder 521. The limiting plates 5213 are slidably connected to the inner sides of the limiting frames 5215. Two groups of limiting blocks 5216 are fixedly connected to the inner sides of the limiting frames 5215 on the side close to the inclined plate 14. The opposite sides of the limiting blocks 5216 are arc-shaped.

[0053] Specifically, the upper ends of the limiting plates 5213 can be clamped by the limiting groove 5214, which facilitates the installation of the top plate 528. The limiting plates 5213 can be clamped by the limiting frames 5215. The limiting blocks 5216 can block the limiting plates 5213, causing the top plate 528 to shift to one side, so that the cut thermoplastic film 13 slides down through the inclined plate 14 into the inner side of the collection frame 15, facilitating the sliding and collection of the cut thermoplastic film 13.

[0054] In this embodiment, the support mechanism 53 includes two groups of ring frames 531 fixedly connected to the upper end of the mounting plate 51. A sliding shaft 532 is fixedly connected to the inner side of the ring frame 531. A connecting rod 533 is slidably connected to the outer side of the sliding shaft 532. The two groups of connecting rods 533 are respectively rotatably connected to the two groups of first rotating shafts 525. Two groups of mutually symmetrical outer shells 534 are fixedly connected to the inner side of the ring frame 531. A blocking block 535 is slidably connected to one end of the outer shell 534. Two groups of pressing blocks 536 are rotatably connected to the outer side of the connecting rod 533. The upper ends of the pressing blocks 536 are arc-shaped. The blocking block 535 is conical.

[0055] A connecting shaft 537 is slidably connected to the inner side of the outer shell 534. The connecting shaft 537 is fixedly connected to the blocking block 535. A second retaining piece 538 is fixedly connected to one end of the connecting shaft 537. The second retaining piece 538 is located inside the outer shell 534. A second spring 539 is fixedly connected to one end of the second retaining piece 538. The second spring 539 is located inside the outer shell 534.

[0056] Specifically, when the pressure of the mold 7 reaches a certain level, the pressing block 536 will press the blocking block 535, causing the pressing block 536 to press the connecting shaft 537 to move inward into the outer shell 534, causing the second retaining piece 538 to press the second spring 539 to contract. The sliding port 5313 can block the sliding piece 5314 to prevent the pressing block 536 from rotating.

[0057] In this embodiment, two sets of connectors 5310 are fixedly connected to both sides of the connecting rod 533 respectively. A second rotating shaft 5311 is rotatably connected between the two sets of connectors 5310. A second elastic sheet 5312 is arranged inside the connector 5310. The second elastic sheet 5312 surrounds the outside of the second rotating shaft 5311. The second rotating shaft 5311 is fixedly connected to the pressing block 536. Slide openings 5313 are formed on both sides of the connecting rod 533. A sliding piece 5314 is fixedly connected to one side of the pressing block 536. The sliding piece 5314 is located inside the slide opening 5313. The lower end of the sliding piece 5314 is in close contact with the bottom end of the inner wall of the slide opening 5313.

[0058] Specifically, during the upward sliding process of the connecting rod 533, the pressing block 536 will rotate downward under the pressure of the stopper 535. At this time, the sliding piece 5314 will rotate inside the slide opening 5313. When the pressing block 536 separates from the stopper 535, the pressing block 536 will rotate back to its original position under the action of the second elastic sheet 5312.

[0059] A production method for continuously producing a vacuum microprism reflective film, comprising:

[0060] Step 1: Install the thermoplastic film 13 on the feeding roller 8, then pull the thermoplastic film 13 so that the thermoplastic film 13 passes through the lower end of the first tensioning roller 9, and then passes through the upper ends of the heating roller 10 and the second tensioning roller 11 in sequence, and then wind up the thermoplastic film 13 through the winding roller 12;

[0061] Step 2: Start the hydraulic rod 6 to push the mold 7 downward, use the mold 7 to shape the thermoplastic film 13, and at the same time use the ring cutter 16 to cut the shaped thermoplastic film 13, and use the top plate 528 to support the thermoplastic film 13 to facilitate the mold 7 to shape the thermoplastic film 13;

[0062] Step 3: When the mold 7 presses down the top plate 528, the second connecting column 527 will drive the first connecting column 526 through the first connecting column 526, so that the connecting rod 533 drives the pressing block 536 to press the stopper 535. When the pressure of the mold 7 reaches a certain level, the pressing block 536 will press the stopper 535 so that the pressing block 536 presses the connecting shaft 537 to move inward of the housing 534, so that the second retaining piece 538 presses the second spring 539 to contract. At this time, the slide opening 5313 will block the sliding piece 5314 to prevent the pressing block 536 from rotating;

[0063] Step Four: When the pressing block 536 separates from the stop block 535, the first connecting column 526 will press the support plate 523 through the first rotating shaft 525 to slide the sliding rod 522 towards the inside of the support cylinder 521, causing the first retaining piece 5217 to press the first spring 5218 to contract. When the mold 7 moves upward, the first spring 5218 will push the sliding rod 522 upward, causing the first connecting column 526 to move upward, causing the limiting plate 5213 to slide upward inside the limiting frame 5215. At this time, the limiting block 5216 will block a set of limiting plates 5213, causing the first rotating shaft 525 to rotate inside the annular cylinder 524, causing the top plate 528 to deflect to one side, and causing the cut thermoplastic film 13 to slide down through the inclined plate 14 into the inside of the collection frame 15;

[0064] Step Five: During the upward sliding process of the connecting rod 533, the pressing block 536 will rotate downward under the pressure of the stop block 535. At this time, the sliding piece 5314 will rotate inside the sliding opening 5313. When the pressing block 536 separates from the stop block 535, the pressing block 536 will rotate back to its original position under the action of the second elastic piece 5312.

[0065] It should be noted that during use, the thermoplastic film 13 is installed on the feeding roller 8, and then the thermoplastic film 13 is pulled so that the thermoplastic film 13 passes through the lower end of the first tensioning roller 9, and then successively passes through the upper ends of the heating roller 10 and the second tensioning roller 11, and then the thermoplastic film 13 is wound by the winding roller 12. The threaded cylinder 529 is tightened on the threaded head 5212 so that the lower end of the second connecting column 527 presses on the threaded head 5212, and the limiting groove 5214 is stuck on the limiting plate 5213. Then, the air inside the vacuum chamber 2 is extracted by the vacuum pump 3 so that the vacuum chamber 2 is in a vacuum state. The hydraulic rod 6 is started to push the mold 7 downward, and the mold 7 is used to shape the thermoplastic film 13. At the same time, the shaped thermoplastic film 13 is sheared by the ring cutter 16, and the top plate 528 is used to support the thermoplastic film 13 to facilitate the mold 7 to shape the thermoplastic film 13. When the mold 7 presses down the top plate 528, the second connecting column 527 will drive the first connecting column 526 through the first connecting column 526 so that the connecting rod 533 drives the pressing block 536 to press the stopper 535. When the pressure of the mold 7 reaches a certain level, the pressing block 536 will press the stopper 535 so that the pressing block 536 presses the connecting shaft 537 to move inwardly of the housing 534, causing the second retaining piece 538 to press the second spring 539 to contract. At this time, the sliding port 5313 will block the sliding piece 5314 to prevent the pressing block 536 from rotating. When the pressing block 536 is separated from the stopper 535, the first connecting column 526 will press the support plate 523 through the first rotating shaft 525 so that the sliding rod 522 slides inwardly of the support cylinder 521, causing the first retaining piece 5217 to press the first spring 5218 to contract. When the mold 7 moves upward, the first spring 5218 will push the sliding rod 522 upward, causing the first connecting column 526 to move upward, causing the limiting plate 5213 to slide upwardly inside the limiting frame 5215. At this time, the limiting block 5216 will block a set of limiting plates 5213, causing the first rotating shaft 525 to rotate inside the ring cylinder 524, causing the top plate 528 to shift to one side, and causing the cut thermoplastic film 13 to slide down into the collection frame 15 through the inclined plate 14. During the upward sliding of the connecting rod 533, the pressing block 536 will rotate downward under the pressure of the stopper 535. At this time, the sliding piece 5314 will rotate inside the sliding port 5313. When the pressing block 536 is separated from the stopper 535, the pressing block 536 will rotate back to its original position under the action of the second elastic piece 5312.

[0066] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum-type device for continuously producing microprismatic reflective film, comprising an outer frame (1), characterized in that: A vacuum box (2) and a vacuum pump (3) are arranged on the inner side of the outer frame (1); two groups of support frames (4) are fixedly connected to the inner side of the vacuum box (2); a feed roller (8), a first tension roller (9), a heating roller (10), a second tension roller (11), and a winding roller (12) are rotatably connected to the inner side of the vacuum box (2); a thermoplastic film (13) is wound around the outer side of the feed roller (8); a hydraulic rod (6) is fixedly connected to the top of the inner wall of the vacuum box (2); a mold (7) is fixedly connected to the lower end of the hydraulic rod (6); the heating roller (10) is flush with the second tension roller (11); a support assembly (5) is arranged on the upper end of the support frame (4); an inclined plate is fixedly connected between the two groups of support frames (4) (14), a collecting frame (15) is fixedly connected to the inner side of the vacuum box (2), and the collecting frame (15) is located below the inclined plate (14); the support assembly (5) comprises a mounting plate (51) fixedly connected to the support frame (4); the upper end of the mounting plate (51) is fixedly connected to a material discharge mechanism (52) and a support mechanism (53); the material discharge mechanism (52) comprises a top plate (528), and the top plate (528) is located between the heating roller (10) and the second tensioning roller (11), and is flush with the second tensioning roller (11); the mold (7) is matched with the top plate (528), and a ring knife (16) is provided on the outer side of the mold (7); the upper end of the mounting plate (51) is fixedly connected to the support cylinder (528); 1), the inner side of the support tube (521) is slidably connected to a slide rod (522), the outer side of the slide rod (522) is fixedly connected to a support plate (523), the support plate (523) is L-shaped, the upper end of the support plate (523) is fixedly connected to an annular tube (524), the inner side of the annular tube (524) is rotatably connected to a first rotating shaft (525), a first connecting column (526) is fixedly connected between two groups of the first rotating shafts (525), a second connecting column (527) is installed at the upper end of the first connecting column (526), ​​the second connecting column (527) is fixedly connected to a top plate (528), a first spring sheet (5220) is arranged on the inner side of the annular tube (524), the first spring sheet (5220) ) is arranged on the outer side of the first rotating shaft (525), the inner side of the support cylinder (521) is fixedly connected with a first spring (5218), the upper end of the first spring (5218) is fixedly connected with a first baffle (5217), the first baffle (5217) is fixedly connected to the sliding rod (522), the inner side of the support cylinder (521) is fixedly connected with an electric push rod (5219), the electric push rod (5219) is located on the inner side of the first spring (5218), the outer side of the first connecting column (526) is fixedly connected with four groups of limiting plates (5213), the lower end of the top plate (528) is fixedly connected with a limiting groove (5214), the upper end of the limiting plate (5213) is inserted into the inner side of the limiting groove (5214),Two groups of limit frames (5215) are fixedly connected to the upper end of the support tube (521), the limit plate (5213) is slidably connected to the inner side of the limit frame (5215), and two groups of limit blocks (5216) are fixedly connected to the inner side of the limit frame (5215) close to the inclined plate (14).

2. The device for vacuum continuous production of microprismatic reflective film according to claim 1, characterized in that: The outer side of the second connecting column (527) is rotatably connected to a threaded barrel (529), a rotating groove (5210) is provided on the outer side of the second connecting column (527), a rotating ring (5211) is fixedly connected to the inner side of the threaded barrel (529), and the rotating ring (5211) is rotatably connected to the inner side of the rotating groove (5210), and a threaded head (5212) is fixedly connected to the upper end of the first connecting column (526), ​​and the threaded head (5212) is threadedly connected to the threaded barrel (529).

3. The device for vacuum continuous production of microprismatic reflective film according to claim 1, characterized in that: The support mechanism (53) comprises two groups of ring frames (531) fixedly connected to the upper end of the mounting plate (51); a sliding shaft (532) is fixedly connected to the inner side of the ring frame (531); a connecting rod (533) is slidably connected to the outer side of the sliding shaft (532); the two groups of connecting rods (533) are rotatably connected to the two groups of first rotating shafts (525), respectively; two groups of symmetrical outer shells (534) are fixedly connected to the inner side of the ring frame (531); a stopper (535) is slidably connected to one end of the outer shell (534); two groups of pressing blocks (536) are rotatably connected to the outer side of the connecting rod (533); the upper end of the pressing block (536) is arc-shaped, and the stopper (535) is conical.

4. The device for vacuum continuous production of microprismatic reflective film according to claim 3, characterized in that: A connecting shaft (537) is slidably connected to the inner side of the outer shell (534); the connecting shaft (537) is fixedly connected to the stopper (535); one end of the connecting shaft (537) is fixedly connected to a second stopper (538); the second stopper (538) is located on the inner side of the outer shell (534); one end of the second stopper (538) is fixedly connected to a second spring (539); the second spring (539) is located on the inner side of the outer shell (534).

5. The device for vacuum continuous production of microprismatic reflective film according to claim 4, characterized in that: Two groups of connecting heads (5310) are fixedly connected to both sides of the connecting rod (533), and a second rotating shaft (5311) is rotatably connected between the two groups of connecting heads (5310). A second elastic sheet (5312) is arranged on the inner side of the connecting head (5310), and the second elastic sheet (5312) surrounds the outer side of the second rotating shaft (5311). The second rotating shaft (5311) is fixedly connected to the pressing block (536). Sliding openings (5313) are provided on both sides of the connecting rod (533), and a sliding sheet (5314) is fixedly connected to one side of the pressing block (536). The sliding sheet (5314) is located on the inner side of the sliding opening (5313), and the lower end of the sliding sheet (5314) is tightly attached to the bottom end of the inner wall of the sliding opening (5313).

6. A method for producing a micro-prismatic reflective film in a vacuum mode, applied to the device for producing a micro-prismatic reflective film in a vacuum mode as claimed in claim 5, characterized in that: include: Step 1: Install the thermoplastic film (13) onto the feeding roller (8), then pull the thermoplastic film (13) so that the thermoplastic film (13) passes through the lower end of the first tensioning roller (9), and then passes through the upper ends of the heating roller (10) and the second tensioning roller (11) in sequence, and then the thermoplastic film (13) is rolled up by the winding roller (12); Step 2: Start the hydraulic rod (6) to push the mold (7) downward, use the mold (7) to shape the thermoplastic film (13), and use the ring knife (16) to shear the shaped thermoplastic film (13), and use the top plate (528) to support the thermoplastic film (13), so as to facilitate the mold (7) to shape the thermoplastic film (13); Step 3: When the mold (7) presses the top plate (528) downward, the second connecting column (527) will use the first connecting column (526) to drive the first connecting column (526) so that the connecting rod (533) drives the pressure block (536) to press the stopper (535). When the pressure of the mold (7) reaches a certain level, the pressure block (536) will press the stopper (535) so that the pressure block (536) presses the connecting shaft (537) to move toward the inner side of the housing (534), so that the second stopper (538) presses the second spring (539) to contract. At this time, the sliding mouth (5313) will block the sliding plate (5314) to prevent the pressure block (536) from rotating. Step 4: When the pressing block (536) is separated from the stopper (535), the first connecting column (526) presses the support plate (523) through the first rotating shaft (525) to make the slide bar (522) slide toward the inner side of the support tube (521), so that the first stopper (5217) presses the first spring (5218) to contract. When the mold (7) moves upward, the first spring (5218) pushes the slide bar (522) to move upward, so that the first stopper (5217) A connecting column (526) moves upward, causing the limiting plate (5213) to slide upward on the inner side of the limiting frame (5215). At this time, the limiting block (5216) blocks a group of limiting plates (5213), causing the first rotating shaft (525) to rotate on the inner side of the ring cylinder (524), causing the top plate (528) to deviate to one side, so that the cut thermoplastic film (13) slides to the inner side of the collecting frame (15) through the inclined plate (14); Step 5: As the connecting rod (533) slides upward, the pressing block (536) rotates downward under the pressure of the stopper (535), and the sliding plate (5314) rotates inside the sliding opening (5313). When the pressing block (536) separates from the stopper (535), the pressing block (536) rotates back to its original position under the action of the second spring sheet (5312).

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