Vacuum type device for continuously producing microprism reflective film and production method

Abstract

The invention relates to the technical field of microprism reflective films, in particular to a vacuum type continuous microprism reflective film production device and a production method.The vacuum type continuous microprism reflective film production device comprises an outer frame, a vacuum box and a vacuumizer are arranged on the inner side of the outer frame, and two supporting frames are fixedly connected to the inner side of the vacuum box; a feeding roller, a first tensioning roller, a heating roller, a second tensioning roller and a winding roller are rotationally connected to the inner side of the vacuum box, a thermoplastic film is wound around the outer side of the feeding roller, a hydraulic rod is fixedly connected to the top end of the inner wall of the vacuum box, a mold is fixedly connected to the lower end of the hydraulic rod, and the heating roller is flush with the second tensioning roller. A supporting assembly is arranged at the upper ends of the supporting frames, an inclined plate is fixedly connected between the two sets of supporting frames, a collecting frame is fixedly connected to the inner side of the vacuum box, and the collecting frame is located below the inclined plate. According to the device, a shaped thermoplastic film can be sheared through a cutting ring, the subsequent shearing operation is reduced, and manpower and material resources are saved.

Description

Technical Field

[0001] The invention relates to the technical field of micro-prismatic reflective films, and in particular to a vacuum type continuous production device and a production method for micro-prismatic reflective films. Background Art

[0002] Microprismatic reflective film or microprismatic reflective sheeting has microprismatic stripes on its surface. When exposed to light, the reflected light is refracted and converged through the microprisms to form bright light. When used in a night environment, it has a conspicuous mark after being exposed to light. The existing production method of microprismatic reflective film or reflective sheeting is to heat the substrate, press the substrate with a plate-shaped mold with microprismatic stripes on the surface, or press the substrate on a plate-shaped mold for shaping. After the substrate is shaped, it is cooled to form microprismatic stripes on the surface. After the processing of the existing microprismatic reflective film is completed, it needs to be cut into a certain shape again to make the final product. In addition, when the pressure of the mold pressing the substrate during the shaping process of the reflective film is too large, the substrate is easily crushed. If the pressure is too small, the microprismatic stripes cannot be formed. For this reason, we propose a vacuum-type continuous production device and production method for microprismatic reflective film. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a vacuum type continuous production device and production method of micro-prismatic reflective film.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a vacuum type continuous production device for micro-prismatic reflective film, comprising an outer frame, a vacuum box and a vacuum pump are arranged on the inner side of the outer frame, two groups of support frames are fixedly connected to the inner side of the vacuum box, a feed roller, a first tensioning roller, a heating roller, a second tensioning roller, and a winding roller are rotatably connected to the inner side of the vacuum box, a thermoplastic film is wrapped around the outer side of the feed roller, a hydraulic rod is fixedly connected to the top of the inner wall of the vacuum box, a mold is fixedly connected to the lower end of the hydraulic rod, the heating roller is flush with the second tensioning roller, a support assembly is arranged on the upper end of the support frame, an inclined plate is fixedly connected between the two groups of the support frames, a collection frame is fixedly connected to the inner side of the vacuum box, and the collection frame is located below the inclined plate.

[0005] Preferably, the support assembly includes a mounting plate fixedly connected to the support frame, the upper end of the mounting plate is fixedly connected with a unloading mechanism and a supporting mechanism, the unloading mechanism includes a top plate, the top plate 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, the upper end of the mounting plate is fixedly connected to a support tube, the inner side of the support tube is slidably connected to a slide rod, the outer side of the slide rod is fixedly connected to a support plate, the support plate is L-shaped, the upper end of the support plate is fixedly connected to an annular tube, the inner side of the annular tube is rotatably connected to a first rotating shaft, a first connecting column is fixedly connected between two groups of the first rotating shafts, a second connecting column is installed on the upper end of the first connecting column, and the second connecting column is fixedly connected to the top plate.

[0007] Preferably, the outer side of the second connecting column is rotatably connected to a threaded barrel, a rotating groove is opened on the outer side of the second connecting column, a swivel is fixedly connected to the inner side of the threaded barrel, the swivel is rotatably connected to the inner side of the rotating groove, and the upper end of the first connecting column is fixedly connected to a threaded head, which is threadedly connected to the threaded barrel.

[0008] Preferably, a first spring is provided on the inner side of the annular tube, the first spring is provided on the outer side of the first rotating shaft, a first spring is fixedly connected to the inner side of the supporting tube, a first baffle is fixedly connected to the upper end of the first spring, the first baffle is fixedly connected to the sliding rod, an electric push rod is fixedly connected to the inner side of the supporting tube, and the electric push rod is located on the inner side of the first spring.

[0009] Preferably, four groups of limit plates are fixedly connected to the outer side of the first connecting column, the lower end of the top plate is fixedly connected to the limit groove, the upper end of the limit plate is inserted into the inner side of the limit groove, the upper end of the support tube is fixedly connected to two groups of limit frames, the limit plate is slidably connected to the inner side of the limit frame, and two groups of limit blocks are fixedly connected to the inner side of the limit frame close to the inclined plate, and the opposite side of the limit block is arc-shaped.

[0010] Preferably, the supporting mechanism comprises two groups of ring frames fixedly connected to the upper end of the mounting plate, the inner side of the ring frames is fixedly connected with a sliding shaft, the outer side of the sliding shaft is slidably connected with a connecting rod, the two groups of connecting rods are rotatably connected to the two groups of first rotating shafts respectively, two groups of mutually symmetrical outer shells are fixedly connected to the inner side of the ring frames, one end of the outer shell is slidably connected with a stopper, the outer side of the connecting rod is rotatably connected with two groups of pressure blocks, the upper end of the pressure block is arc-shaped, and the stopper is conical.

[0011] Preferably, a connecting shaft is slidably connected to the inner side of the shell, the connecting shaft is fixedly connected to the block, one end of the connecting shaft is fixedly connected to a second baffle, the second baffle is located on the inner side of the shell, one end of the second baffle is fixedly connected to a second spring, and the second spring is located on the inner side of the shell.

[0012] Preferably, two groups of connecting heads are fixedly connected on both sides of the connecting rod, and a second rotating shaft is rotatably connected between the two groups of connecting heads. A second spring sheet is arranged on the inner side of the connecting head, and the second spring sheet surrounds the outer side of the second rotating shaft. The second rotating shaft is fixedly connected to the pressure block. Sliding openings are provided on both sides of the connecting rod, and a sliding sheet is fixedly connected to one side of the pressure block. The sliding sheet is located on the inner side of the sliding opening, and the lower end of the sliding sheet is tightly attached to the bottom end of the inner wall of the sliding opening.

[0013] A vacuum-type continuous production method for producing micro-prismatic reflective film, comprising: Step 1: Install the thermoplastic film onto 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 passes through the heating roller and the upper end of the second tensioning roller in sequence, and then the thermoplastic film is rolled up by the winding roller; Step 2: Start the hydraulic rod to push the mold downward, use the mold to shape the thermoplastic film, and use the ring knife to shear the shaped thermoplastic film, and use the top plate to support the thermoplastic film, so that the mold can shape the thermoplastic film; Step 3: When the mold presses the top plate downward, the second connecting column will use the first connecting column to drive the first connecting column so that the connecting rod drives the pressure block to press the stopper. When the pressure of the mold reaches a certain level, the pressure block will press the stopper so that the pressure block presses the connecting axis to move toward the inner side of the housing, so that the second stopper presses the second spring to contract. At this time, the sliding port will block the sliding plate to prevent the pressure block from rotating. 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 make the slide bar slide toward the inner side of the support tube, so that the first stopper presses the first spring to contract. When the mold moves upward, the first spring will push the slide bar upward, so that the first connecting column moves upward, so that the limit plate slides upward on the inner side of the limit frame. At this time, the limit block will block a set of limit plates, so that the first rotating shaft rotates on the inner side of the ring tube, so that the top plate deviates to one side, so that the cut thermoplastic film slides to the inner side of the collection frame through the inclined plate; Step 5: When the connecting rod slides upward, the pressing block will rotate downward under the pressure of the stopper, and the slide will rotate inside the sliding opening. When the pressing block is separated from the stopper, the pressing block will return to its original position under the action of the second spring sheet.

[0014] Compared with the prior art, the present invention provides a vacuum-type continuous production device and method for micro-prismatic reflective film, which has the following beneficial effects: 1. A vacuum type device and method for continuously producing micro-prismatic reflective film. A first tensioning roller can be used to press a thermoplastic film to make it tight, a heating roller can be used to heat the thermoplastic film, a second tensioning roller can be used to make the thermoplastic film flat, and a mold can be used to press the edges of the thermoplastic film. A winding roller can be used to wind up the thermoplastic film, a threaded cylinder can be used to facilitate the installation of a top plate on a first connecting column, a rotating groove can facilitate the rotation of a rotating ring, and a vacuum pump can be used to extract air inside a vacuum box to put the vacuum box in a vacuum state.

[0015] 2. A vacuum type device and method for continuously producing micro-prismatic reflective film, wherein a mold is used to shape a thermoplastic film, and a circular knife is used to shear the shaped thermoplastic film, thereby reducing the subsequent shearing steps. A top plate is used to support the thermoplastic film, which is convenient for the mold to shape the thermoplastic film. When the mold presses the top plate downward to move, it will drive the pressure block to press the stopper. When the pressure of the mold reaches a certain level, the pressure block will press the stopper so that the pressure block presses the connecting shaft to move toward the inner side of the housing, so that the second stopper presses the second spring to contract. The sliding plate can be blocked by the sliding mouth to prevent the pressure block from rotating.

[0016] 3. A vacuum type device and method for continuously producing micro-prismatic reflective film, wherein the support plate presses the slide bar to slide toward the inner side of the support tube, so that the first baffle presses the first spring to contract. After the mold moves upward, the first spring pushes the slide bar to move upward, so that the first connecting column moves upward. The electric push rod can assist the first spring in pushing the first baffle to move upward, so that the limit plate slides upward on the inner side of the limit frame. A group of limit plates can be blocked by the limit block, so that the first rotating shaft rotates on the inner side of the ring tube, so that the top plate deviates to one side, so that the cut thermoplastic film slides to the inner side of the collection frame through the inclined plate, so that the cut thermoplastic film is convenient to slide and collect. During the upward sliding process of the connecting rod, the pressing block rotates downward under the pressure of the baffle, and the slide rotates on the inner side of the sliding port. When the pressing block is separated from the baffle, the pressing block rotates back to its original position under the action of the second spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 The present invention is cut away Figure 1 ; Figure 3 The present invention is cut away Figure 2 ; Figure 4 It is a schematic diagram of the partial structure of the present invention Figure 1 ; Figure 5 It is a schematic diagram of the partial structure of the present invention Figure 2 ; Figure 6 For the present invention Figure 5 The enlarged structural diagram of part A in the middle; Figure 7 It is a schematic diagram of the partial structure of the present invention Figure 3 ; Figure 8 It is a schematic diagram of the partial structure of the present invention Figure 4 ; Fig. 9 This is a schematic diagram of the exploded structure of the support assembly of the present invention; Fig.10 It is a structural schematic diagram of the blanking mechanism of the present invention; Fig.11 Cutaway view of the blanking mechanism of the present invention Figure 1 ; Fig.12 For the present invention Fig.11 The enlarged structural diagram of part B in the middle; Fig.13 Cutaway view of the blanking mechanism of the present invention Figure 2 ; Fig.14 For the present invention Fig.13 The enlarged structural diagram of the middle C part; Fig.15 It is a schematic diagram of the supporting mechanism structure of the present invention; Fig.16 The supporting mechanism of the present invention is partially schematically shown in FIG. Figure 1 ; Fig.17 For the present invention Fig.16 The enlarged structural diagram of the middle D part; Fig.18 The supporting mechanism of the present invention is partially schematically shown in FIG. Figure 2 ; Fig.19 For the present invention Fig.18 The enlarged structural diagram of part E in the middle.

[0018] In the figure: 1, outer frame; 2, vacuum box; 3, vacuum pump; 4, support frame; 5, support assembly; 51, mounting plate; 52, unloading mechanism; 521, support cylinder; 522, slide rod; 523, support plate; 524, ring 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 baffle; 5218, first spring; 5219, Electric push rod; 5220, first spring piece; 53, supporting mechanism; 531, ring frame; 532, sliding shaft; 533, connecting rod; 534, housing; 535, block; 536, pressure block; 537, connecting shaft; 538, second block piece; 539, second spring; 5310, connector; 5311, second rotating shaft; 5312, second spring piece; 5313, sliding mouth; 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, collecting frame; 16, ring knife. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] See also Figure 1 - Fig.19 A vacuum type device for continuously producing micro-prismatic reflective film comprises an outer frame 1, 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 tensioning roller 9, a heating roller 10, a second tensioning 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 tensioning roller 11, a support assembly 5 is arranged on the upper end of the support frame 4, an inclined plate 14 is fixedly connected between the two groups of support frames 4, 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.

[0021] In this embodiment, the support assembly 5 includes a mounting plate 51 fixedly connected to the support frame 4, and the upper end of the mounting plate 51 is fixedly connected with a unloading mechanism 52 and a supporting mechanism 53. The unloading mechanism 52 includes 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 adapted to the top plate 528, and a ring knife 16 is arranged on the outer side of the mold 7.

[0022] Specifically, the shaped thermoplastic film 13 is sheared by the circular knife 16 to reduce the subsequent shearing steps, the top plate 528 can support the thermoplastic film 13, and the second tensioning roller 11 can make the thermoplastic film 13 flat, which is convenient for the mold 7 to press the edges of the thermoplastic film 13.

[0023] In this embodiment, the upper end of the mounting plate 51 is fixedly connected to a support tube 521, 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 a ring tube 524, the inner side of the ring tube 524 is rotatably connected to a first rotating shaft 525, a first connecting column 526 is fixedly connected between the two groups of first rotating shafts 525, a second connecting column 527 is installed on the upper end of the first connecting column 526, and the second connecting column 527 is fixedly connected to the top plate 528.

[0024] The outer side of the second connecting column 527 is rotatably connected to a threaded barrel 529, a rotating groove 5210 is opened 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.

[0025] Specifically, the threaded tube 529 can be used to 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 .

[0026] In this embodiment, a first elastic sheet 5220 is provided on the inner side of the annular tube 524, and the first elastic sheet 5220 is provided on the outer side of the first rotating shaft 525. A first spring 5218 is fixedly connected to the inner side of the supporting tube 521, and a first blocking sheet 5217 is fixedly connected to the upper end of the first spring 5218. The first blocking sheet 5217 is fixedly connected to the sliding rod 522, and an electric push rod 5219 is fixedly connected to the inner side of the supporting tube 521, and the electric push rod 5219 is located on the inner side of the first spring 5218.

[0027] Specifically, the first elastic sheet 5220 can facilitate the rotation of the first rotating shaft 525, and the first spring 5218 can push the first blocking sheet 5217 to move upward, so as to facilitate the upward movement of the sliding rod 522. The electric push rod 5219 can assist the first blocking sheet 5217 in pushing the sliding rod 522 to move upward.

[0028] In this embodiment, four groups of limit plates 5213 are fixedly connected to the outer side of the first connecting column 526, the lower end of the top plate 528 is fixedly connected to the limit groove 5214, the upper end of the limit plate 5213 is inserted into the inner side of the limit groove 5214, the upper end of the support tube 521 is fixedly connected to two groups of limit frames 5215, 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, and the opposite side of the limit block 5216 is arc-shaped.

[0029] Specifically, the upper end of the limiting plate 5213 can be clamped by the limiting groove 5214, which is convenient for the installation of the top plate 528. The limiting plate 5213 can be clamped by the limiting frame 5215, and the limiting block 5216 can block the limiting plate 5213, so that the top plate 528 is offset to one side, so that the cut thermoplastic film 13 can slide to the inner side of the collection frame 15 through the inclined plate 14, which is convenient for the cut thermoplastic film 13 to slide and be collected.

[0030] In this embodiment, the supporting mechanism 53 includes two groups of ring frames 531 fixedly connected to the upper end of the mounting plate 51, the inner side of the ring frame 531 is fixedly connected with a sliding shaft 532, the outer side of the sliding shaft 532 is slidably connected with a connecting rod 533, the two groups of connecting rods 533 are rotatably connected to the two groups of first rotating shafts 525 respectively, the inner side of the ring frame 531 is fixedly connected with two groups of mutually symmetrical outer shells 534, one end of the outer shell 534 is slidably connected with a stopper 535, the outer side of the connecting rod 533 is rotatably connected with two groups of pressure blocks 536, the upper end of the pressure block 536 is arc-shaped, and the stopper 535 is conical.

[0031] A connecting shaft 537 is slidably connected to the inner side of the outer shell 534, and 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, and 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, and the second spring 539 is located on the inner side of the outer shell 534.

[0032] Specifically, 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 inside of the shell 534, so that the second stopper 538 presses the second spring 539 to contract, and the sliding mouth 5313 can block the sliding plate 5314 to prevent the pressure block 536 from rotating.

[0033] In this embodiment, two groups of connecting heads 5310 are fixedly connected on 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 piece 5312 is arranged on the inner side of the connecting head 5310, and the second elastic piece 5312 surrounds the outer side of the second rotating shaft 5311. The second rotating shaft 5311 is fixedly connected to the pressing block 536. Slide openings 5313 are provided on both sides of the connecting rod 533, and a sliding piece 5314 is fixedly connected to one side of the pressing block 536. The sliding piece 5314 is located on the inner side of the sliding piece 5313, and the lower end of the sliding piece 5314 is tightly attached to the bottom end of the inner wall of the sliding piece 5313.

[0034] Specifically, when the connecting rod 533 slides upward, the pressing block 536 will rotate downward under the pressure of the stopper 535. At this time, the sliding plate 5314 will rotate inside the sliding opening 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 sheet 5312.

[0035] A vacuum-type continuous production method for producing micro-prismatic reflective film, comprising: 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 that the mold 7 can 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 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 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 port 5313 will block the sliding plate 5314 to prevent the pressing block 536 from rotating. Step 4: When the pressing block 536 is separated from the stopper 535, the first connecting column 526 will press the supporting plate 523 through the first rotating shaft 525 to make the slide bar 522 slide toward the inner side of the supporting 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 will push the slide bar 522 upward, so that the first connecting column 526 moves upward, so that the limit plate 5213 slides upward on the inner side of the limit frame 5215. At this time, the limit block 5216 will block a group of limit plates 5213, so that the first rotating shaft 525 rotates on the inner side of the annular tube 524, so that the top plate 528 deviates 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 slide 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 elastic sheet 5312 .

[0036] It should be noted that, when in use, the thermoplastic film 13 is mounted 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 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, and the threaded cylinder 529 is tightened on the threaded head 5212, so that the lower end of the second connecting column 527 is pressed on the threaded head 5212, and the limiting groove 5214 is stuck on the limiting plate 5213, and then the vacuum machine 3 is used to extract the air inside the vacuum box 2, so that the vacuum box 2 is in a vacuum state, and the vacuum box 2 is started. The hydraulic rod 6 pushes the mold 7 downward, and the mold 7 is used to shape the thermoplastic film 13. At the same time, the ring knife 16 is used to shear the shaped thermoplastic film 13, and the top plate 528 is used to support the thermoplastic film 13, so that the mold 7 can shape the thermoplastic film 13. 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 The inner side of the housing 534 moves, so that the second stopper 538 presses the second spring 539 to shrink. At this time, the slide 5313 will block the slide 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 to make the slide bar 522 slide toward the inner side of the support cylinder 521, so that the first stopper 5217 presses the first spring 5218 to shrink. When the mold 7 moves upward, the first spring 5218 will push the slide bar 522 to move upward, so that the first connecting column 526 moves upward, so that the limit plate 5213 is on the limit frame When the inner side of the connecting rod 533 slides upward, the limit block 5216 will block a group of limit plates 5213, so that the first rotating shaft 525 rotates on the inner side of the ring cylinder 524, and the top plate 528 is offset 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. During the upward sliding 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 on the inner side of the sliding mouth 5313. When the pressing block 536 is separated 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.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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 tensioning roller (9), a heating roller (10), a second tensioning 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 tensioning roller (11); a support assembly (5) is arranged on 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 frame (15) is fixedly connected to the inner side of the vacuum box (2); and the collection frame (15) is located below the inclined plate (14).

2. The device for vacuum continuous production of microprismatic reflective film according to claim 1, characterized in that: The support assembly (5) comprises a mounting plate (51) fixedly connected to the support frame (4); a material discharge mechanism (52) and a support mechanism (53) are fixedly connected to the upper end of the mounting plate (51); the material discharge mechanism (52) comprises 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 matched with the top plate (528); and a ring knife (16) is provided on the outer side of the mold (7).

3. The device for continuously producing microprismatic reflective film in vacuum according to claim 2, characterized in that: The upper end of the mounting plate (51) is fixedly connected to a support tube (521), 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 on the upper end of the first connecting column (526), ​​and the second connecting column (527) is fixedly connected to a top plate (528).

4. The device for continuously producing microprismatic reflective film in vacuum according to claim 3, 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).

5. The device for vacuum continuous production of microprismatic reflective film according to claim 4, characterized in that: A first elastic sheet (5220) is arranged on the inner side of the annular tube (524), and the first elastic sheet (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 supporting tube (521), and a first blocking sheet (5217) is fixedly connected to the upper end of the first spring (5218). The first blocking sheet (5217) is fixedly connected to the sliding rod (522). An electric push rod (5219) is fixedly connected to the inner side of the supporting tube (521), and the electric push rod (5219) is located on the inner side of the first spring (5218).

6. The device for continuously producing microprismatic reflective film in vacuum according to claim 5, characterized in that: Four groups of limit plates (5213) are fixedly connected to the outer side of the first connecting column (526); the lower end of the top plate (528) is fixedly connected to the limit groove (5214); the upper end of the limit plate (5213) is inserted into the inner side of the limit groove (5214); the upper end of the support tube (521) is fixedly connected to two groups of limit frames (5215); the limit plates (5213) are slidably connected to the inner side of the limit frames (5215); the inner side of the limit frames (5215) close to the inclined plate (14) is fixedly connected to two groups of limit blocks (5216); the opposite side of the limit blocks (5216) is in an arc shape.

7. The device for vacuum continuous production of microprismatic reflective film according to claim 6, 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.

8. The vacuum type continuous production device for microprismatic reflective film according to claim 7, 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).

9. The vacuum type continuous production device for microprismatic reflective film according to claim 8, 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).

10. 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 8, 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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