A die cutting apparatus for liquid crystal display polarizer production

Abstract

The application discloses a kind of die cutting equipment for liquid crystal display polarizing plate production in polarizing plate production technical field, including machine table, polarizing plate, transmission mechanism, die cutting mechanism, blanking mechanism, separation mechanism and external central control station, the transmission mechanism and polarizing plate are all set on machine table upper end, the die cutting mechanism is set on machine table top, the blanking mechanism is set on machine table lower end, the separation mechanism is set in die cutting mechanism, the central control station is used to control the linkage between transmission mechanism, die cutting mechanism, blanking mechanism and separation mechanism;The application separates in die cutting process, first, polarizing plate and sheet do not need to be positioned again, reduce process, improve work efficiency, second, separate when die cutting mechanism is die cut, so that cutter in die cutting mechanism can be positioned and continuously cut edge of sheet during separation process, make separation process more smooth, the junction of sheet and corner material is more easily separated during separation, reduce sheet damage risk.

Description

Technical Field

[0001] This invention relates to the field of polarizer production technology, specifically to a die-cutting device for producing polarizers for liquid crystal displays. Background Technology

[0002] Polarizing film is made of multiple layers of materials bonded together. Before use, polarizing film needs to be die-cut into standard sheet size for subsequent use.

[0003] Traditional die-cutting equipment requires further separation of polarizing film from scraps after die-cutting due to adhesion between the film and scraps. This further increases the workload of polarizing film production. Moreover, the multi-layered structure of polarizing film poses a risk of damage during the separation process.

[0004] Based on this, the present invention designs a die-cutting device for the production of polarizers for liquid crystal displays to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a die-cutting device for the production of polarizers for liquid crystal displays, in order to solve the problem mentioned in the background art that, after the traditional die-cutting equipment has die-cutted the polarizer, the material and scrap materials are stuck together, so the material and scrap materials need to be separated again after die-cutting, which further increases the workload of polarizer production. Moreover, during the separation process, due to the multi-layer structure of the polarizer, there is a risk of damage to the material during separation.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a die-cutting device for producing polarizers for liquid crystal displays, comprising a machine base, a polarizer, a transmission mechanism, a die-cutting mechanism, a feeding mechanism, a release mechanism, and an external central control console. The transmission mechanism and the polarizer are both disposed on the upper part of the machine base, the die-cutting mechanism is disposed above the machine base, the feeding mechanism is disposed at the lower end of the machine base, and the release mechanism is disposed inside the die-cutting mechanism. The machine base has a vertically penetrating feeding hole with the same outline as the die-cutting sheet. A pushing device is driven and connected above the die-cutting mechanism. The pushing device is used to drive the die-cutting mechanism to move. The central control console is used to control the linkage between the transmission mechanism, the die-cutting mechanism, the feeding mechanism, and the release mechanism.

[0007] As a further embodiment of the present invention, the pushing device includes a mounting frame, an mounting platform is fixedly connected to the upper end of the mounting frame, a hydraulic press is fixedly connected to the lower end of the mounting platform, and the output shaft of the hydraulic press is connected to the die-cutting mechanism.

[0008] As a further embodiment of the present invention, the die-cutting mechanism includes a first mounting plate, a die-cutting blade fixedly connected to the lower end of the first mounting plate, an outer blade sleeve vertically slidably disposed on the outer side wall of the die-cutting blade, an inner blade sleeve vertically slidably disposed on the inner side wall of the die-cutting blade, a plurality of first elastic telescopic rods fixedly connected to the upper end of the outer blade sleeve, and a plurality of second elastic telescopic rods fixedly connected to the upper end of the inner blade sleeve, the upper ends of the first elastic telescopic rods and the second elastic telescopic rods being fixedly connected to the lower end of the first mounting plate, a support mechanism being provided in the feeding hole, the support mechanism being used to support the polarizer, and the support mechanism being able to disengage from the feeding hole to avoid misalignment of the polarizer during the process of the polarizer entering the feeding mechanism; a first driving mechanism being provided at the upper end of the first mounting plate, and a disengagement mechanism being provided at the lower end of the first driving mechanism.

[0009] As a further embodiment of the present invention, the disengagement mechanism includes a push plate whose contour conforms to the contour of the inner wall of the inner blade sleeve. The upper end of the push plate is connected to a first driving mechanism, which is capable of driving the push plate to make vertical displacement.

[0010] As a further embodiment of the present invention, the first driving mechanism includes a second mounting plate, a plurality of third elastic telescopic rods are fixedly connected to the lower end of the second mounting plate, the lower ends of the plurality of third elastic telescopic rods are all fixedly connected to the upper end of the first mounting plate, a plurality of first connecting rods are fixedly connected to the upper end of the second mounting plate, the upper ends of the plurality of first connecting rods are jointly fixedly connected to the third mounting plate, a cylinder is fixedly connected to the lower end of the third mounting plate, the output shaft of the cylinder is fixedly connected to the upper end of the push plate, and the upper end of the third mounting plate is fixedly connected to the output shaft of the hydraulic press.

[0011] As a further embodiment of the present invention, the support mechanism includes four support blocks that can conform to the inner wall of the feeding hole. Each support block has a vertically formed guide groove on its inner wall corresponding to the position of the support block. Each support block is fixedly connected to a guide block on its side near the inner wall of the feeding hole. The guide block can slide vertically with the guide groove. A first limiting block is fixedly connected to the lower end of the machine base on the side of the feeding hole, corresponding to the position of the support block. The height of the first limiting block is equal to that of the support block. Each first limiting block has a vertically formed sliding groove. A connecting plate is fitted into each sliding groove. Each connecting plate is fixedly connected to the lower end of the corresponding guide block. A trigger plate is provided on the lower end of the machine base on the side of the first limiting block. Each trigger plate has a trigger groove. A trigger rod is slidably connected to each trigger groove. Each trigger rod is fixedly connected to the lower end of the corresponding connecting plate. The trigger plate is driven by a second driving mechanism, which controls the vertical and horizontal displacement of the trigger plate.

[0012] As a further embodiment of the present invention, the second driving mechanism includes two push rods located on the left and right sides of the discharge hole, respectively. The trigger plates are all fixedly connected to the push rods on the same side as the discharge hole. Each trigger plate has a vertically arranged first slide rail on its sidewall, which is fixedly connected to the lower end of the machine base. Each first slide rail is vertically and elastically slidably connected to a second slide rail, which is laterally slidably connected to the corresponding trigger plate. Each push rod has a second limiting block on its sidewall away from the discharge hole. The second limiting block is fixedly connected to the lower end of the machine base, and the vertical height between the lower end face of the second limiting block and the upper end face of the push rod is equal to the depth of the discharge hole. The push rod's front... Both ends of the push rod are fixedly connected to a horizontally arranged drive rod. The ends of the two drive rods located on the same side of the front and rear are close to each other, and the upper edges of the close sides are chamfered. A wedge block is vertically arranged above the two drive rods on the same side of the front and rear. The upper end of the wedge block is fixedly connected to a second connecting rod, which is fixedly connected to a second mounting plate. A fourth elastic telescopic rod is fixedly connected to the side wall of the push rod away from the feeding hole. A second slider is fixedly connected to the fourth elastic telescopic rod. A fixing block is provided on the side of the second slider. The upper end of the fixing block is fixedly connected to the lower end of the machine base. The second slider is vertically slidably connected to the side wall of the fixing block.

[0013] As a further embodiment of the present invention, the feeding mechanism includes a base, and two symmetrically placed receiving shells are provided on the upper end of the base. One of the receiving shells is fixedly connected to the lower end of the machine base and to the upper end of the base. The two receiving shells are interlocked with each other and can together form a container whose inner wall contour fits the material sheet. The upper end of the receiving shell is flush with the lower end of the first limiting block.

[0014] As a further embodiment of the present invention, a plurality of third elastic connecting rods are fixedly connected to the upper end of the base, and the upper ends of the plurality of third elastic connecting rods are connected to a placement plate. A vibration device is externally connected to the lower end of the placement plate, and the vibration device is used to vibrate the placement plate.

[0015] As a further embodiment of the present invention, the sidewall of the receiving shell is provided with a plurality of arrayed vent holes.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention provides a material feeding hole at the die-cutting position on the machine base and a material feeding mechanism for collecting the sheet material below the machine base. Combined with a separation mechanism, the sheet material is separated from the scrap material, and the sheet material is collected. This allows the equipment to directly obtain the collected sheet material after die-cutting, avoiding secondary processing for collecting the sheet material. Compared to separating the sheet material after die-cutting, this invention separates the sheet material during the die-cutting process. First, it eliminates the need for positioning the polarizer and sheet material, reducing steps and improving work efficiency. Second, separation occurs during the die-cutting process (the cutter in the die-cutting mechanism presses down to complete the die-cutting of the sheet material and continuously presses and cuts the edge of the sheet material). During the separation process, the cutter in the die-cutting mechanism can position and continuously cut the edge of the sheet material, making the separation process smoother. The connection between the sheet material and the scrap material is easier to detach during separation, reducing the risk of sheet material damage.

[0018] 2. This invention uses an outer and inner blade sleeve to clamp the die-cutting blade, further protecting it from bending and breakage. It also helps to fix the shape of the die-cutting blade, preventing deformation under pressure and further avoiding shape deviations in the material due to blade deformation. Furthermore, by incorporating a support mechanism, the invention prevents the downward pressure exerted by the die-cutting blade on the polarizer from becoming a pulling force, thus preventing deformation and damage to the polarizer.

[0019] 3. This invention directly fixes the drive unit cylinder of the push plate in the die-cutting mechanism, allowing the push plate to move downwards during the die-cutting process. Furthermore, the first, second, and third elastic telescopic rods use their own elasticity to limit the pressure of the die-cutting blade, outer blade sleeve, and inner blade sleeve on the polarizer. This reduces the difficulty of controlling the push plate, die-cutting blade, outer blade sleeve, and inner blade sleeve during operation, thereby reducing the difficulty of manufacturing and using the equipment, reducing the production cost of polarizer sheets, and improving the production efficiency of polarizer sheets. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention;

[0022] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0023] Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point B;

[0024] Figure 5 This is a bottom view of the structure of the present invention after removing the discharge mechanism;

[0025] Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point C.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] Machine base 11, polarizer 12, transmission mechanism 13, unloading hole 14, first mounting plate 21, die cutter 22, outer blade sleeve 23, inner blade sleeve 24, first elastic telescopic rod 25, second elastic telescopic rod 26, push plate 3, second mounting plate 41, third elastic telescopic rod 42, first connecting rod 43, third mounting plate 44, cylinder 45, support block 51, guide groove 52, guide block 53, first limit block 54, slide groove 55, connecting plate 56. Trigger plate 59. Trigger groove 510. Trigger rod 511. Push rod 61. First slide rail 62. Second slide rail 63. Second limit block 64. Drive rod 65. Wedge block 66. Second connecting rod 67. Fourth elastic telescopic rod 68. Second slider 69. Fixing block 610. Base 71. Receiving shell 72. Third elastic connecting rod 81. Placement plate 82. Vent hole 9. Mounting bracket 101. Mounting platform 102. Hydraulic press 103. Detailed Implementation

[0028] Please see Figures 1-6 This invention provides a technical solution: a die-cutting device for producing polarizers for liquid crystal displays, comprising a machine base 11, a polarizer 12, a transmission mechanism 13, a die-cutting mechanism, a feeding mechanism, a release mechanism, and an external central control console. The transmission mechanism 13 and the polarizer 12 are both located on the upper end of the machine base 11. The die-cutting mechanism is located above the machine base 11, the feeding mechanism is located at the lower end of the machine base 11, and the release mechanism is located inside the die-cutting mechanism. The machine base 11 has a vertically penetrating feeding hole 14 with the same outline as the die-cutting sheet. A pushing device 15 is driven and connected above the die-cutting mechanism. The pushing device 15 is used to drive the movement of the die-cutting mechanism. The central control console is used to control the linkage between the transmission mechanism 13, the die-cutting mechanism, the feeding mechanism, and the release mechanism.

[0029] During operation, the central control unit controls the polarizer 12 to move to the die-cutting position below the die-cutting mechanism via the transmission mechanism 13 (the polarizer 12 stops moving after reaching the die-cutting position). Then, the die-cutting mechanism moves down to die-cut the polarizer 12 to obtain a sheet. Next, the central control unit controls the release mechanism to push the sheet into the lower feed hole 14, so that the sheet is separated from the scrap of the polarizer 12. Furthermore, the release mechanism pushes the sheet into the lower feeding mechanism, so that the sheet enters the unloading mechanism to wait for removal.

[0030] This invention provides a material feeding hole 14 at the die-cutting position on the machine base 11, and a material feeding mechanism for collecting the sheet material is set below the machine base 11. Combined with a separation mechanism, the sheet material is separated from the scrap material, and the sheet material is collected. This allows the equipment to directly obtain the collected sheet material after die-cutting, avoiding secondary processing for collecting the sheet material. Compared to separating the sheet material after die-cutting, this invention separates the sheet material during the die-cutting process. First, it eliminates the need to position the polarizer 12 and the sheet material, reducing the number of steps and improving work efficiency. Second, separation occurs during the die-cutting process (the cutter in the die-cutting mechanism presses down to complete the die-cutting of the sheet material and continuously presses and cuts the edge of the sheet material). During the separation process, the cutter in the die-cutting mechanism can position and continuously cut the edge of the sheet material, making the separation process smoother. The connection between the sheet material and the scrap material is easier to detach during separation, reducing the risk of sheet material damage.

[0031] As a further embodiment of the present invention, the pushing device 15 includes a mounting frame 101, an mounting platform 102 is fixedly connected to the upper end of the mounting frame 101, a hydraulic press 103 is fixedly connected to the lower end of the mounting platform 102, and the output shaft of the hydraulic press 103 is connected to the die-cutting mechanism.

[0032] As a further embodiment of the present invention, the die-cutting mechanism includes a first mounting plate 21, a die-cutting blade 22 fixedly connected to the lower end of the first mounting plate 21, an outer blade sleeve 23 vertically slidably disposed on the outer side wall of the die-cutting blade 22, an inner blade sleeve 24 vertically slidably disposed on the inner side wall of the die-cutting blade 22, a plurality of first elastic telescopic rods 25 fixedly connected to the upper end of the outer blade sleeve 23, and a plurality of second elastic telescopic rods 26 fixedly connected to the upper end of the inner blade sleeve 24, the upper ends of the first elastic telescopic rods 25 and the second elastic telescopic rods 26 being fixedly connected to the lower end of the first mounting plate 21, a support mechanism being provided in the feeding hole 14, the support mechanism being used to support the polarizer 12, and the support mechanism being able to disengage from the feeding hole 14 to avoid misalignment of the material during the process of the material entering the feeding mechanism; a first driving mechanism being provided at the upper end of the first mounting plate 21, and a disengagement mechanism being provided at the lower end of the first driving mechanism.

[0033] During operation, the first drive mechanism pushes the first mounting plate 21 downwards. The first mounting plate 21 drives the die-cutting blade 22, the outer blade sleeve 23, and the inner blade sleeve 24 to move downwards together until the lower ends of the outer blade sleeve 23 and the inner blade sleeve 24 press against the upper end of the polarizer 12 (at this time, the support mechanism supports the inner blade sleeve 24 at intervals between the polarizer 12, and at the same time, cooperates with the upper end of the machine base 11 to support the polarizer 12, preventing the polarizer 12 from being deformed and damaged downwards when it is cut by the die-cutting blade 22). The first mounting plate 21 continues to move downwards (the corresponding first elastic telescopic rod 25 and second elastic telescopic rod 26 are compressed; it should also be noted that multiple second elastic telescopic rods 25 and 26 are compressed). The maximum elastic force of the retracting rod 26 acts on the pressure at the upper end of the polarizer 12 (which is less than the pressure threshold for damage to the polarizer 12), causing the die-cutting blade 22 to continue to move down and cut the polarizer 12 to obtain a sheet; then the support mechanism disengages from the feeding hole 14 (so that there is no obstruction in the path of the sheet to the feeding mechanism), and at the same time the disengagement mechanism pushes the sheet into the lower feeding hole 14 (during this process, since the support mechanism disengages from the feeding hole 14, the polarizer 12 below the inner blade sleeve 24 is unsupported, and the inner blade sleeve 24, under the elastic force of the second elastic telescopic rod 26, pushes the sheet into the lower feeding hole 14, assisting the disengagement mechanism in separating the sheet and the scrap), and finally enters the feeding mechanism.

[0034] The present invention uses the outer blade sleeve 23 and the inner blade sleeve 24 to clamp the die-cutting blade 22, further protecting the die-cutting blade 22 and preventing it from bending or breaking. At the same time, it can also fix the shape of the die-cutting blade 22, preventing it from being deformed under pressure, and further preventing the material sheet shape deviation due to the deformation of the die-cutting blade 22. In addition, the invention also provides a support mechanism to prevent the downward pressing force of the die-cutting blade 22 on the polarizer 12 from becoming a pulling force when the polarizer 12 is pressed and cut by the die-cutting blade 22, which would cause deformation and damage to the polarizer 12.

[0035] As a further embodiment of the present invention, the disengagement mechanism includes a push plate 3, the contour of which fits the contour of the inner wall of the inner blade sleeve 24, and the upper end of the push plate 3 is connected to a first driving mechanism for transmission, the first driving mechanism being able to drive the push plate 3 to perform vertical displacement.

[0036] During operation, after the die-cutting blade 22 cuts the polarizer 12, the first drive mechanism drives the push plate 3 to move vertically downward, pushing the sheet into the feeding mechanism.

[0037] As a further embodiment of the present invention, the first driving mechanism includes a second mounting plate 41, a plurality of third elastic telescopic rods 42 are fixedly connected to the lower end of the second mounting plate 41, the lower ends of the plurality of third elastic telescopic rods 42 are fixedly connected to the upper end of the first mounting plate 21, a plurality of first connecting rods 43 are fixedly connected to the upper end of the plurality of first connecting rods 43, a third mounting plate 44 is fixedly connected to the upper end of the third mounting plate 44, a cylinder 45 is fixedly connected to the lower end of the third mounting plate 44, the output shaft of the cylinder 45 is fixedly connected to the upper end of the push plate 3, and the upper end of the third mounting plate 44 is fixedly connected to the output shaft of the hydraulic press 103.

[0038] During operation, the pushing device 15 drives the third mounting plate 44 to move downward, causing the die-cutting mechanism and the push plate 3 to move downward together until the die-cutting mechanism cuts the polarizer 12 (during this process, the first elastic telescopic rod 25, the second elastic telescopic rod 26 and the third elastic telescopic rod 42 use their own elasticity to limit the pressure of the die-cutting blade 22, the outer blade sleeve 23 and the inner blade sleeve 24 on the polarizer 12, reducing the difficulty of controlling the die-cutting blade 22, the outer blade sleeve 23 and the inner blade sleeve 24). After the polarizer 12 is cut, the cylinder 45 starts and drives the push plate 3 to move downward, so that the push plate 3 cooperates with the inner blade sleeve 24 to push the cut material from the polarizer 12 downward into the discharge mechanism.

[0039] This invention directly fixes the drive unit cylinder 45 of the push plate 3 in the die-cutting mechanism, allowing the push plate 3 to move downwards during the die-cutting process. Furthermore, the first elastic telescopic rod 25, the second elastic telescopic rod 26, and the third elastic telescopic rod 42, through their own elasticity, limit the pressure of the die-cutting blade 22, the outer blade sleeve 23, and the inner blade sleeve 24 on the polarizer 12. This reduces the difficulty of controlling the push plate 3, the die-cutting blade 22, the outer blade sleeve 23, and the inner blade sleeve 24 during operation, thus reducing the difficulty of manufacturing and using the equipment. Consequently, it lowers the production cost of the polarizer 12 and improves the production efficiency of the polarizer 12.

[0040] As a further embodiment of the present invention, the support mechanism includes four support blocks 51 that can conform to the inner wall of the feeding hole 14. Each support block 51 has a vertically formed guide groove 52 corresponding to its position on the inner wall of the feeding hole 14. Each support block 51 is fixedly connected to a guide block 53 on the side closest to the inner wall of the feeding hole 14. The guide block 53 can slide vertically with the guide groove 52. A first limiting block 54 is fixedly connected to the lower end of the machine base 11 on the side of the feeding hole 14, corresponding to the position of the support block 51. The height of the first limiting block 54 is equal to that of the support block 51. Each of the four components has a vertically extending groove 55, and a connecting plate 56 is fitted into each groove 55. Each connecting plate 56 is fixedly connected to the lower end of the corresponding guide block 53. Each of the four components has a trigger plate 59 located on one side of the first limiting block 54 at the lower end of the machine base 11. Each trigger plate 59 has a trigger groove 510, and a trigger rod 511 is slidably connected to each trigger groove 510. Each trigger rod 511 is fixedly connected to the lower end of the corresponding connecting plate 56. The trigger plate 59 is driven by a second driving mechanism, which is used to control the vertical and horizontal displacement of the trigger plate 59.

[0041] During operation, when the separation mechanism separates the sheet material and scrap, the second drive mechanism first controls the trigger plate 59 to move vertically downwards. This causes the trigger plate 59 to drive the support block 51 to move vertically downwards via the connecting plate 56. (Note that during the vertical downward movement of the support block 51, the upper surface of the support block 51 must be below the push plate 3 to prevent the push plate 3 from bending the sheet material). This continues until the support block 51 disengages from the discharge hole 14. Then, the second drive mechanism controls the trigger plate 59 to move laterally away from the discharge hole 14. This causes the trigger groove 510 on the trigger plate 59 to drive the connecting plate 56 away from the discharge hole 14 via the trigger rod 511, further driving the support block 51 to move horizontally away from the discharge hole 14. The support block 51 moves horizontally away from the feeding hole 14 toward the first limiting block 54, further ensuring unobstructed passage between the feeding hole 14 and the feeding mechanism, allowing the push plate 3 to push the sheet directly into the feeding mechanism. After the push plate 3 pushes the sheet downward past the support block 51, the second drive mechanism controls the trigger plate 59 to horizontally reset, causing the support block 51 to reset back to directly below the feeding hole 14. This ensures that during the subsequent upward reset of the push plate 3, the support block 51 obstructs the sheet, preventing the sheet from sticking during the upward reset of the push plate 3 (because the sheet is light and thin, it is easily affected by static electricity and other factors, causing it to stick to the push plate 3), thus detaching the sheet from the feeding mechanism.

[0042] As a further embodiment of the present invention, the second driving mechanism includes two push rods 61 located on the left and right sides of the discharge hole 14, respectively. The trigger plates 59 are all fixedly connected to the push rods 61 on the same side as the discharge hole 14. Each trigger plate 59 has a vertically arranged first slide rail 62 on its sidewall, which is fixedly connected to the lower end of the machine base 11. Each first slide rail 62 is vertically and elastically slidably connected to a second slide rail 63, which is laterally slidably connected to the corresponding trigger plate 59. Each push rod 61 has a second limiting block 64 on its sidewall away from the discharge hole 14. The second limiting block 64 is fixedly connected to the lower end of the machine base 11, and the vertical height between the lower end face of the second limiting block 64 and the upper end face of the push rod 61 is equal to the depth of the discharge hole 14. 1. Both ends of the front and rear are fixedly connected with horizontally arranged drive rods 65. The ends of the two drive rods 65 located on the same side of the front and rear are close to each other, and the upper corners of the close side are chamfered. A wedge block 66 is vertically arranged above the two drive rods 65 on the same side of the front and rear. The upper end of the wedge block 66 is fixedly connected to a second connecting rod 67. The second connecting rod 67 is fixedly connected to the second mounting plate 41. A fourth elastic telescopic rod 68 is fixedly connected to the side wall of the push rod 61 away from the feeding hole 14. The fourth elastic telescopic rod 68 is fixedly connected to a second slider 69. A fixing block 610 is arranged on the side of the second slider 69. The upper end of the fixing block 610 is fixedly connected to the lower end of the machine base 11. The second slider 69 is vertically slidably connected to the side wall of the fixing block 610.

[0043] During operation, as the second mounting plate 41 moves downward, it drives the die-cutting blade 22 to cut the polarizer 12. The second mounting plate 41, through the second connecting rod 67, drives the wedge block 66 to move downward along the mid-plane between the two drive rods 65 on the same side (the downward movement of the second mounting plate 41 drives the third mounting plate 44 and the cylinder 45 on the third mounting plate 44 to move downward synchronously, and the cylinder 45 drives the push plate 3 to move downward synchronously). This continues until the die-cutting blade 22 cuts the polarizer 12, and the wedge surface at the lower end of the corresponding wedge block 66 reaches the chamfer of the drive rod 65. Then, the second mounting plate 41 continues to move downward, and the corresponding push plate 3 and wedge block 66 move downward synchronously until the wedge block 66 is driven downward by the downward pressing mechanism. The drive rod 65 causes the trigger plate 59 to move downward via the push rod 61 (when the wedge block 66 presses the drive rod 65 downward, the wedge surface of the wedge block 66 directly presses the chamfer of the drive rod 65 downward, causing the drive rod 65 and the push rod 61 to tend to move away from the feed hole 14 in the downward and horizontal directions. Due to the restriction of the second limit block 64, the push rod 61 cannot move away from the feed hole 14 in the horizontal direction, so the drive rod 65 and the push rod 61 can only move downward until the push rod 61 passes the second limit block 64), thereby causing the support block 51 to move downward until the support block 51 disengages from the feed hole 14 (the upper end face of the support block 51 reaches the lower end face of the machine base 11, corresponding to...). The push rod 61 moves downward past the second limiting block 64, and the trigger plate 59 drives the second slide rail 63 to slide downward on the first slide rail 62 to its limit position. Then the second mounting plate 41 continues to move downward, and the wedge block 66 continues to press the chamfer of the drive rod 65 downward. At this time, because the second slide rail 63 is located at the limit position of downward sliding in the first slide rail 62, the second slide rail 63 cannot move downward, so the trigger plate 59 cannot move downward, and the push rod 61 cannot move downward. At the same time, because the push rod 61 moves vertically past the second limiting block 64, the push rod 61 can move horizontally away from the feed hole 14. Correspondingly, the drive rod 65 moves away from the feed hole 14 under the pressure of the wedge block 66. The material hole 14 moves horizontally, which in turn drives the rod 65 to move the trigger plate 59 horizontally away from the material hole 14. This causes the trigger groove 510 on the trigger plate 59 to move the trigger rod 511 along the trajectory of the connecting plate 56 away from the material hole 14, so that the support block 51 moves away from directly below the material hole 14. When the support block 51 is completely away from directly below the material hole 14, the second mounting plate 41 stops moving downward. At this time, the corresponding push plate 3 moves until the lower end face of the push plate 3 is flush with the lower end face of the machine base 11. Then, the cylinder 45 is activated, and the output shaft of the cylinder 45 extends and drives the push plate 3 to move downward, so that the push plate 3 pushes the material into the discharge mechanism.Then, the second mounting plate 41 is driven upward, causing the support block 51 to return to its original position directly below the discharge hole 14 (at this time, the second mounting plate 41 temporarily stops moving upward and returning to its original position). This positions the support block 51 directly above the discharge mechanism, blocking the inlet of the discharge mechanism. Next, the control cylinder 45 retracts its output shaft, causing the push plate 3 to move upward and return to its original position. During this process, the push plate 3 moves upward and returns to its original position between the four support blocks 51. The obstruction of the support blocks 51 prevents the material sheet from being carried out of the discharge mechanism by the upward movement of the push plate 3. Finally, the second mounting plate 41 continues to move upward, completing the equipment reset.

[0044] As a further embodiment of the present invention, the feeding mechanism includes a base 71, and two symmetrically placed receiving shells 72 are provided on the upper end of the base 71. One of the receiving shells 72 is fixedly connected to the lower end of the machine base 11 and to the upper end of the base 71 by an external connecting piece. The two receiving shells 72 are interlocked with each other and can together form a container whose inner wall contour fits the material sheet. The upper end of the receiving shell 72 is flush with the lower end of the first limiting block 54.

[0045] During operation, the sheet material is pushed into the container composed of two receiving shells 72 by the pusher plate 3 and continuously stacked. When production is completed or the container is full of sheet material, one receiving shell 72 is removed (the receiving shell 72 that is not connected to the base 71 and the lower end of the machine 11), so that the container is open and the stacked sheet material is directly taken out. Then the receiving shell 72 is locked into the other receiving shell 72 again.

[0046] As a further embodiment of the present invention, a plurality of third elastic connecting rods 81 are fixedly connected to the upper end of the base 71, and the upper ends of the plurality of third elastic connecting rods 81 are connected to a placement plate 82. A vibration device is externally connected to the lower end of the placement plate 82, and the vibration device is used to vibrate the placement plate 82.

[0047] During operation, after the material sheet is pushed into the discharge mechanism by the push plate 3, the material sheet falls onto the upper end of the placement plate 82. The vibration device vibrates the placement plate 82, causing the placement plate 82 to vibrate, thereby using the vibration to make the material sheet on the upper end of the placement plate 82 fall flat on the upper end of the placement plate 82.

[0048] As a further embodiment of the present invention, the sidewall of the housing 72 is provided with a plurality of arrayed vent holes 9.

[0049] During operation, the sheet falls into the two receiving shells 72, and the air blown by the sheet during the falling process is discharged through the vent 9, so as to prevent the sheet from tipping over due to the untimely discharge of air under the sheet during the falling process, resulting in uneven stacking of the sheet.

Claims

1. A die-cutting device for producing polarizers for liquid crystal displays, characterized in that: Includes a machine base (11) for support and fixation, wherein a polarizer (12) is provided at the upper end of the machine base (11), and the machine base (11) has a vertically penetrating unloading hole (14) with the same outline as the die-cut sheet; A transmission mechanism (13) is provided on the upper end of the machine base (11) and is used to transport the polarizer (12); A die-cutting mechanism is provided above the machine base (11) and is used to die-cut the output sheet in the polarizer (12). A pushing device (15) is connected above the die-cutting mechanism and is used to drive the die-cutting mechanism to move. The feeding mechanism is located at the lower end of the machine base (11) and is used for storing and taking out the sheet material; A separation mechanism is provided within the die-cutting mechanism and is used to separate the sheet material from the scrap of the polarizer (12); An external central control unit is used to control the movement of the transmission mechanism (13), the die-cutting mechanism, the feeding mechanism, and the unloading mechanism; The die-cutting mechanism includes a first mounting plate (21), a die-cutting blade (22) is fixedly connected to the lower end of the first mounting plate (21), an outer blade sleeve (23) is vertically slidably arranged on the outer side wall of the die-cutting blade (22), an inner blade sleeve (24) is vertically slidably arranged on the inner side wall of the die-cutting blade (22), a plurality of first elastic telescopic rods (25) are fixedly connected to the upper end of the outer blade sleeve (23), a plurality of second elastic telescopic rods (26) are fixedly connected to the upper end of the inner blade sleeve (24), the upper ends of the first elastic telescopic rods (25) and the second elastic telescopic rods (26) are both fixedly connected to the lower end of the first mounting plate (21), a support mechanism is provided in the feeding hole (14), the support mechanism is used to support the polarizer (12), and the support mechanism can disengage from the feeding hole (14) to avoid the material sheet during the process of the material sheet entering the feeding mechanism; a first driving mechanism is provided at the upper end of the first mounting plate (21), and the disengagement mechanism is provided at the lower end of the first driving mechanism; The first driving mechanism includes a second mounting plate (41), and a plurality of third elastic telescopic rods (42) are fixedly connected to the lower end of the second mounting plate (41). The lower ends of the plurality of third elastic telescopic rods (42) are all fixedly connected to the upper end of the first mounting plate (21). A plurality of first connecting rods (43) are fixedly connected to the upper end of the second mounting plate (41). The upper ends of the plurality of first connecting rods (43) are all fixedly connected to a third mounting plate (44). A cylinder (45) is fixedly connected to the lower end of the third mounting plate (44). The output shaft of the cylinder (45) is fixedly connected to the upper end of the push plate (3). The upper end of the third mounting plate (44) is fixedly connected to the output shaft of the hydraulic press (103). The support mechanism includes four support blocks (51) that can fit against the inner wall of the feeding hole (14). Each support block (51) has a vertically opening guide groove (52) on its inner wall corresponding to the position of the support block (51). Each support block (51) has a guide block (53) fixedly connected to the side of its inner wall near the feeding hole (14). The guide block (53) can slide vertically with the guide groove (52). Each lower end of the machine base (11) is fixedly connected to a first limiting block (54) on the side of the feeding hole (14) corresponding to the position of the support block (51). The height of the first limiting block (54) is equal to that of the support block (51). Each first limiting block (54) is vertically opening... A sliding groove (55) is provided, and a connecting plate (56) is fitted inside the sliding groove (55). The connecting plate (56) is fixedly connected to the lower end of the corresponding guide block (53). A trigger plate (59) is provided at the lower end of the machine base (11) on one side of the first limiting block (54). The trigger plate (59) is provided with a trigger groove (510). A trigger rod (511) is slidably connected to the trigger groove (510). The trigger rod (511) is fixedly connected to the lower end of the corresponding connecting plate (56). The trigger plate (59) is driven by a second driving mechanism. The second driving mechanism is used to control the vertical and horizontal displacement of the trigger plate (59). The second driving mechanism includes two push rods (61) located on the left and right sides of the discharge hole (14), respectively. The trigger plates (59) are fixedly connected to the push rods (61) on the same side as the discharge hole (14). The sidewalls of the trigger plates (59) are vertically provided with first slide rails (62), which are fixedly connected to the lower end of the machine base (11). The first slide rails (62) are vertically elastically slidably connected with second slide rails (63), which are slidably connected to the corresponding trigger plates (59) laterally. The sidewalls of the push rods (61) away from the discharge hole (14) are provided with second limiting blocks (64), which are fixedly connected to the lower end of the machine base (11). The vertical height between the lower end face of the second limiting block (64) and the upper end face of the push rod (61) is equal to the depth of the discharge hole (14). The push rods (61) are positioned back and forth. Both ends are fixedly connected to a horizontally arranged drive rod (65). The ends of the two drive rods (65) located on the same side at the front and back are close to each other and the upper corners of the close side are chamfered. A wedge block (66) is vertically arranged above the two drive rods (65) on the same side at the front and back. The upper end of the wedge block (66) is fixedly connected to a second connecting rod (67). The second connecting rod (67) is fixedly connected to the second mounting plate (41). A fourth elastic telescopic rod (68) is fixedly connected to the side wall of the push rod (61) away from the feeding hole (14). The fourth elastic telescopic rod (68) is fixedly connected to a second slider (69). A fixing block (610) is arranged on the side of the second slider (69). The upper end of the fixing block (610) is fixedly connected to the lower end of the machine base (11). The second slider (69) is vertically slidably connected to the side wall of the fixing block (610).

2. The die-cutting equipment for producing polarizers for liquid crystal displays according to claim 1, characterized in that: The pushing device (15) includes a mounting frame (101), an mounting platform (102) is fixedly connected to the upper end of the mounting frame (101), a hydraulic press (103) is fixedly connected to the lower end of the mounting platform (102), and the output shaft of the hydraulic press (103) is connected to the die-cutting mechanism.

3. The die-cutting equipment for producing polarizers for liquid crystal displays according to claim 1, characterized in that: The disengagement mechanism includes a push plate (3), the outline of which fits the inner wall outline of the inner blade sleeve (24), and the upper end of the push plate (3) is connected to a first drive mechanism, which can drive the push plate (3) to make vertical displacement.

4. The die-cutting equipment for producing polarizers for liquid crystal displays according to claim 1, characterized in that: The feeding mechanism includes a base (71), and two symmetrically placed receiving shells (72) are provided on the upper end of the base (71). One of the receiving shells (72) is fixedly connected to the lower end of the machine base (11) and the upper end of the base (71) by an external connecting piece. The two receiving shells (72) are interlocked with each other and can together form a container with an inner wall contour that fits the material sheet. The upper end of the receiving shell (72) is flush with the lower end of the first limiting block (54).

5. A die-cutting device for producing polarizers for liquid crystal displays according to claim 4, characterized in that: The upper end of the base (71) is fixedly connected to a plurality of third elastic connecting rods (81), and the upper ends of the plurality of third elastic connecting rods (81) are connected to a placement plate (82). The lower end of the placement plate (82) is externally connected to a vibration device, which is used to vibrate the placement plate (82).

6. A die-cutting device for producing polarizers for liquid crystal displays according to claim 4, characterized in that: The sidewall of the housing (72) is provided with a plurality of arrayed vent holes (9).

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