Diaphragm punching equipment

Abstract

The invention discloses diaphragm punching equipment, and belongs to the field of diaphragm cutting, an adjustment driving assembly is mounted on an upper template and is in transmission connection with a cutting die, a controller is in communication connection with a first camera, an optical axis angle measuring device, a second camera and the adjustment driving assembly, and the first camera and the second camera respectively collect images of an optical film; the controller recognizes the long edge of the optical film according to images collected by the first camera and the second camera, the optical axis angle measuring device measures the optical axis angle of the current position of the optical film, the controller calculates the compensation angle according to the optical axis angle, and the adjusting driving assembly drives the cutting die to rotate according to the compensation angle. By means of the design, the optical axis angle measuring device can measure the optical axis on line, the adjusting driving assembly can adjust the angle of the cutting die according to the optical axis, the production efficiency is improved, and the problem that due to laser cutting, a heat affected zone on the edge of the optical film has fused edges and dust is solved through cutting die punching.

Description

Technical Field

[0001] The invention relates to the field of film cutting, in particular to film punching equipment. Background Art

[0002] The processing of composite optical films requires the superposition of multiple layers of optical films. During the process of multi-layer composite, the control of optical angle errors is particularly demanding. Currently, the Pancake composite films on the market are mainly composed of linear polarizers, quarter-wave plates and reflective polarizers. Based on optical design, each layer of material will have corresponding optical axis angle requirements. The traditional process requires offline measurement of the optical axis of each optical film, and then laser cutting and processing into sheets of specified angles and sizes, and then bonding them into composite films, and finally processing them into lens shapes.

[0003] This processing method is limited by the raw material supply method and the uniformity of the optical axis. The efficiency of offline measurement and laser cutting is very low. In addition, there is a lot of manual operation and material waste, which is prone to errors. There will be bottlenecks in production capacity, and a lot of manpower and equipment will be invested to meet production capacity. In addition, after laser cutting, there will be melted edges and dust in the heat-affected zone at the edge of the optical film, which will affect the tearing of the film before lamination. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide a film punching device that can measure the optical axis online and adjust the angle of the cutting die according to the optical axis.

[0005] One of the purposes of the present invention is achieved by the following technical solution:

[0006] A diaphragm punching device comprises a lower die structure, a guide column and an upper die structure, wherein the guide column is mounted on the lower die structure, and the upper die structure is slidably mounted on the guide column. The upper die structure comprises an upper die plate, a cutting die and an adjusting drive assembly, wherein the adjusting drive assembly is mounted on the upper die plate and is transmission-connected to the cutting die, and the cutting die is located above the lower die structure. The diaphragm punching device also comprises a first camera, an optical axis angle measuring device, a second camera and a controller, wherein the controller is communicatively connected to the first camera, the optical axis angle measuring device, the second camera and the adjusting drive assembly, wherein the first camera and the second camera respectively capture images of the optical film on the lower die structure, wherein the controller identifies the long side of the optical film according to the images captured by the first camera and the second camera, wherein the optical axis angle measuring device measures the optical axis angle of the current position of the optical film, wherein the controller calculates a compensation angle according to the optical axis angle, and wherein the adjusting drive assembly drives the cutting die to rotate according to the compensation angle, and after the cutting die rotates, it moves downward along the guide column to punch the optical film.

[0007] Furthermore, the first camera, the optical axis angle measuring device and the second camera are fixed to the upper template.

[0008] Furthermore, the first camera, the optical axis angle measuring device and the second camera are located on the same straight line.

[0009] Furthermore, the optical axis angle measuring device is located between the first camera and the second camera.

[0010] Furthermore, the adjustment drive assembly includes a first translation drive member, a first connecting plate, a second translation drive member, a second connecting plate and a rotation drive member, the first translation drive member is fixed to the upper template, the first connecting plate is connected to the output end of the first translation drive member, the second translation drive member is fixed to the first connecting plate, the second connecting plate is connected to the output end of the second translation drive member, the rotation drive member is fixed to the second connecting plate, and the output end of the rotation drive member is connected to the cutting die.

[0011] Furthermore, a driving direction of the first translation drive member is perpendicular to a driving direction of the second translation drive member.

[0012] Furthermore, the first translation driving member and the second translation driving member are both linear modules.

[0013] Furthermore, the upper die structure also includes a mounting plate, the mounting plate is transmission-connected to the adjustment drive assembly, and the cutting die is detachably mounted on the mounting plate.

[0014] Furthermore, the lower mold structure includes a main body, a sheet material loading plate and a first locking member, and the sheet material loading plate is slidably mounted on the main body and locked by the first locking member.

[0015] Furthermore, the film punching equipment also includes a coil material feeding structure, which includes a bracket and two conveying rollers rotatably mounted on the bracket, the two conveying rollers are parallel to each other, and a transmission channel is formed between the two conveying rollers.

[0016] Compared with the prior art, the upper die structure of the diaphragm punching equipment of the present invention includes an upper die plate, a knife die and an adjusting drive assembly, the adjusting drive assembly is installed on the upper die plate and is transmission-connected to the knife die, the knife die is located above the lower die structure, the diaphragm punching equipment also includes a first camera, an optical axis angle measuring device, a second camera and a controller, the controller is communicatively connected with the first camera, the optical axis angle measuring device, the second camera and the adjusting drive assembly, the first camera and the second camera respectively capture images of the optical film on the lower die structure, the controller identifies the long side of the optical film according to the images captured by the first camera and the second camera, the optical axis angle measuring device measures the optical axis angle of the current position of the optical film, the controller calculates the compensation angle according to the optical axis angle, the adjusting drive assembly drives the knife die to rotate according to the compensation angle, and after the knife die rotates, it moves downward along the guide column to punch the optical film, through the above design, the optical axis angle measuring device can measure the optical axis online, the adjusting drive assembly can adjust the knife die angle according to the optical axis, thereby improving production efficiency, and the use of knife die punching avoids the problem of melted edge and dust in the heat-affected zone at the edge of the optical film caused by laser cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a film punching device according to the present invention;

[0018] Figure 2 for Figure 1 A three-dimensional diagram of the lower die structure of the diaphragm punching equipment;

[0019] Figure 3 for Figure 2 A three-dimensional diagram of the internal structure of the lower mold structure;

[0020] Figure 4 for Figure 1 A three-dimensional diagram of the upper die structure of the diaphragm punching equipment;

[0021] Figure 5 for Figure 4 A three-dimensional diagram of the internal structure of the upper mold structure;

[0022] Figure 6 for Figure 4 A three-dimensional view of a mounting plate of an upper mold structure;

[0023] Figure 7 for Figure 4 A three-dimensional diagram of an adjustment drive assembly of an upper mold structure;

[0024] Figure 8 for Figure 1 A three-dimensional view of the coil feeding structure of the film punching equipment.

[0025] In the figure: 10, lower mold structure; 11, main body; 110, slide; 111, blanking port; 112, sheet outlet; 12, sheet feeding plate; 120, first plate body; 121, first handle; 13, first locking member; 20, guide column; 30, upper mold structure; 31, upper mold plate; 32, mounting plate; 320, avoidance groove; 33, knife die; 330, knife body; 331, second handle; 34, second locking member; 340, retaining edge; 35, adjustment drive assembly; 350, first translation drive member; 351, first connecting plate; 352, second translation drive member moving part; 353, second connecting plate; 354, rotating driving part; 40, coil material feeding structure; 41, panel; 42, feeding assembly; 421, bracket; 4210, bottom plate; 42101, mounting hole; 4211, column; 422, manual adjustment assembly; 4220, adjustment plate; 4221, adjustment knob; 423, conveying roller; 424, height adjustment assembly; 4240, adjustment rod; 4241, resistance block; 4242, elastic member; 4243, nut; 50, first camera; 60, optical axis angle measuring device; 70, second camera. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be another intermediate component through which it is fixed. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be another intermediate component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] The film punching equipment of the present invention is used for punching optical films, and can punch both coiled materials and sliced ​​materials.

[0030] See also Figure 1 The film punching device of the present invention includes a lower mold structure 10, a guide column 20, an upper mold structure 30, a coil feeding structure 40, a first camera 50, an optical axis angle measuring device 60 and a second camera 70.

[0031] See also Figure 2 as well as Figure 3 The lower mold structure 10 includes a main body 11, a sheet feeding plate 12 and a first locking member 13. A groove is provided on the upper surface of the main body 11, and slide grooves 110 are provided on both sides of the groove, and a blanking port 111 is provided at the bottom of the groove. The groove is used to install the sheet feeding plate 12, and the sheet feeding plate 12 slides along the slide groove 110. The blanking port 111 is located at the bottom of the sheet feeding plate 12, and the film punched from the sheet feeding plate 12 falls into the blanking port 111. A channel is formed inside the main body 11, and a sheet outlet 112 is formed on the side of the main body 11. The film in the blanking port 111 slides along the channel to the sheet outlet 112, and the film is discharged from the sheet outlet 112.

[0032] The sheet loading plate 12 is used for loading when the optical film raw material is a sheet. The sheet loading plate 12 includes a first plate body 120 and a first handle 121, and the first handle 121 is fixed to the first plate body 120. The first handle 121 is used for the operator to grasp, so as to facilitate the sheet loading plate 12 to be taken out of the main body 11 and put into the main body 11.

[0033] The first locking member 13 is used to lock the sheet loading plate 12 after it is placed in the main body 11. Specifically, the first locking member 13 is rotatably mounted on the main body 11, and a convex edge is provided on the edge of the first locking member 13. When the convex edge is rotated to contact the sheet loading plate 12, the sheet loading plate 12 is locked, and when the convex edge is rotated to separate from the sheet loading plate 12, the sheet loading plate 12 is unlocked.

[0034] The guide column 20 is mounted on the lower mold structure 10, and the upper mold structure 30 is mounted on the top of the guide column 20. In one embodiment, the guide column 20 drives the upper mold structure 30 to move downward to perform the punching action. In another embodiment, the upper mold structure 30 is driven by a driving member to move downward along the guide column 20 to perform the punching action.

[0035] See also Figures 4 to 7 The upper mold structure 30 includes an upper mold plate 31 , a mounting plate 32 , a cutting mold 33 , a second locking member 34 and an adjusting drive assembly 35 .

[0036] The upper template 31 is used to fix the adjustment drive assembly 35, and the adjustment drive assembly 35 is used to drive the knife mold 33 to rotate and move to compensate for the optical axis angle. In this embodiment, the first camera 50, the optical axis angle measuring device 60 and the second camera 70 are fixed to the upper template 31, and the first camera 50, the optical axis angle measuring device 60 and the second camera 70 are located on the same straight line, and the optical axis angle measuring device 60 is located between the first camera 50 and the second camera 70. In other embodiments, the first camera 50, the optical axis angle measuring device 60 and the second camera 70 can also be fixed to the main body 11.

[0037] The mounting plate 32 is used to replace the die cutter 33 according to the shape or size of the film to be punched. The mounting plate 32 is provided with three avoidance grooves 320, and the positions of the three avoidance grooves 320 correspond to the positions of the first camera 50, the optical axis angle measuring device 60 and the second camera 70 respectively.

[0038] The bottom edge of the cutting die 33 is a blade, and when the cutting die 33 falls, the blade performs punching. The cutting die 33 is slidably mounted on the mounting plate 32 and locked by a second locking member 34, so that the cutting die 33 can be detachably mounted, and the cutting die 33 is easy to replace.

[0039] The second locking member 34 is rotatably mounted on the mounting plate 32 . A retaining edge 340 is provided on the second locking member 34 . When the retaining edge 340 contacts the cutting die 33 , the cutting die 33 is locked. When the retaining edge 340 is rotated to be separated from the cutting die 33 , the cutting die 33 is unlocked.

[0040] The adjustment drive assembly 35 includes a first translation drive member 350, a first connecting plate 351, a second translation drive member 352, a second connecting plate 353 and a rotation drive member 354. The first translation drive member 350 is fixed to the upper mold plate 31, the first connecting plate 351 is connected to the output end of the first translation drive member 350, the second translation drive member 352 is fixed to the first connecting plate 351, the second connecting plate 353 is connected to the output end of the second translation drive member 352, the rotation drive member 354 is fixed to the second connecting plate 353, and the output end of the rotation drive member 354 is connected to the cutting die 33. The driving direction of the first translation drive member 350 is perpendicular to the driving direction of the second translation drive member 352. Specifically, the first translation drive member 350 and the second translation drive member 352 are both linear modules.

[0041] See also Figure 8 The coil material loading structure 40 is used for loading the optical film when the optical film is a coil material. The coil material loading structure 40 includes a panel 41 and a loading assembly 42 fixed to the panel 41.

[0042] The feeding assembly 42 includes a bracket 421, a manual adjustment assembly 422, two conveying rollers 423 and two height adjustment assemblies 424. The bracket 421 is fixed to the panel 41, and the bracket 421 includes a bottom plate 4210 and two columns 4211 fixed to both ends of the bottom plate 4210. The bottom plate 4210 is provided with a mounting hole 42101, and the mounting hole 42101 is in a long strip shape so that the position of the bracket 421 can be adjusted.

[0043] The manual adjustment component 422 includes an adjustment plate 4220 and an adjustment knob 4221. The adjustment plate 4220 is fixed to the panel 41. The adjustment knob 4221 is rotatably mounted on the adjustment plate 4220. The adjustment knob 4221 cooperates with the bracket 421. When the adjustment knob 4221 rotates, the bracket 421 slides.

[0044] One conveying roller 423 is rotatably mounted on the column 4211, and the other conveying roller 423 is rotatably mounted on the height adjustment assembly 424. The height adjustment assembly 424 adjusts the distance between the two conveying rollers 423, so that the loading assembly 42 is suitable for optical film rolls of different thicknesses.

[0045] The height adjustment assembly 424 includes an adjustment rod 4240, a resistance block 4241, an elastic member 4242 and a nut 4243. The adjustment rod 4240 is rotatably mounted on the column 4211, the resistance block 4241 and the nut 4243 are mounted on the adjustment rod 4240, and the two ends of the elastic member 4242 are respectively in resistance with the resistance block 4241 and the nut 4243. The conveying roller 423 is rotatably mounted on the nut 4243.

[0046] The first camera 50 , the optical axis angle measuring device 60 and the second camera 70 are fixed to the upper template 31 , and the first camera 50 , the optical axis angle measuring device 60 and the second camera 70 are located on the same straight line, and the optical axis angle measuring device 60 is located between the first camera 50 and the second camera 70 .

[0047] When using the film punching device, when the optical film is a sheet, the sheet loading plate 12 is pulled out, the optical film is placed on the sheet loading plate 12, the sheet loading plate 12 is pushed into the main body 11, and the first locking member 13 rotates to lock the sheet loading plate 12. The first camera 50 and the second camera 70 respectively capture images of the optical film on the sheet loading plate 12, and the controller recognizes the long side of the optical film based on the images captured by the first camera 50 and the second camera 70, and uses the long side as the reference side to measure the actual optical axis angle of the material. The optical axis angle measuring device 60 measures the optical axis angle of the current position of the optical film, the controller calculates the compensation angle based on the optical axis angle, and adjusts the driving component 35 to drive the cutting die 33 to rotate according to the compensation angle. After the cutting die 33 rotates, it moves down along the guide column 20 to punch and cut the optical film. Through the above design, the optical axis angle measuring device 60 can measure the optical axis online, and the adjusting driving component 35 can adjust the angle of the cutting die 33 according to the optical axis, thereby improving production efficiency. The use of the cutting die 33 for punching avoids the problem of melted edges and dust in the heat-affected zone at the edge of the optical film caused by laser cutting.

[0048] When the optical film is a coil, the optical film is transported from between the two conveying rollers 423 to the lower mold structure 10, and the first camera 50 and the second camera 70 respectively collect images of the optical film on the sheet feeding plate 12. The controller identifies the long side of the optical film based on the images collected by the first camera 50 and the second camera 70, and uses the long side as the reference side to measure the actual optical axis angle of the material. The optical axis angle measuring device 60 measures the optical axis angle of the current position of the optical film, and the controller calculates the compensation angle based on the optical axis angle. The adjustment drive component 35 drives the die cutter 33 to rotate according to the compensation angle. After the die cutter 33 rotates, it moves down along the guide column 20 to punch the optical film. Through the above design, the optical axis angle measuring device 60 can measure the optical axis online, and the adjustment drive component 35 can adjust the angle of the die cutter 33 according to the optical axis to improve production efficiency. The die cutter 33 punching avoids the problem of melted edges and dust in the heat-affected zone of the edge of the optical film caused by laser cutting.

[0049] Specifically, the following three embodiments are used for illustration:

[0050] Example 1

[0051] A linear polarizer roll is received and the roll is installed on a loading shaft. The optical film is transported from between two conveyor rollers 423 to the lower mold structure 10. The long side direction of the incoming material is taken as a reference. The theoretical value of the transmission axis angle is 0 degrees. The optical axis angle measuring device 60 actually measures the transmission axis angle to be +1 degree. When punching, the drive component 35 is adjusted to drive the knife die 33 to rotate clockwise by 1 degree, otherwise, it is rotated counterclockwise by 1 degree.

[0052] Example 2

[0053] A quarter glass sheet coil is provided. With the long side of the material as the reference, the theoretical fast axis angle is 45 degrees. The optical axis angle measuring device 60 actually measures the fast axis angle to be +43 degrees. When punching, the drive assembly 35 is adjusted to drive the knife die 33 to rotate counterclockwise by 2 degrees. Otherwise, it is rotated clockwise by 2 degrees.

[0054] Example 3

[0055] A reflective polarizer or semi-transparent and semi-reflective sheet material is provided. Taking the long side direction of the sheet material as the reference, the theoretical value of the absorption axis angle is 45 degrees. The optical axis angle measuring device 60 actually measures the absorption axis angle to be +43 degrees. When punching, the driving component 35 is adjusted to drive the cutting die 33 to rotate clockwise by 2 degrees, otherwise, it is rotated counterclockwise by 2 degrees.

[0056] The optical axis angle measuring device 60 can measure the optical axis online, and the adjusting drive assembly 35 can adjust the angle of the die cutter 33 according to the optical axis, perform online compensation, improve work efficiency, reduce personnel operating errors, and improve material utilization. The use of the die cutter 33 for punching avoids the problem of melted edges and dust in the heat-affected zone of the optical film edge caused by laser cutting. The edge of the optical material is cleaner and has no melted edges, which improves the appearance quality of the material to a certain extent and reduces foreign matter and dust pollution. At the same time, it also brings convenience to the film tearing in the post-lamination process and eliminates the concerns about the difficulty of film tearing. The production capacity of one device can replace multiple optical measuring instruments and laser cutting machines, increase efficiency by 300%, reduce labor by 300%, and is more suitable for large-scale industrial production.

[0057] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which are equivalent modifications and improvements made to the above embodiments based on the essential technology of the present invention, and all of them belong to the protection scope of the present invention.

Claims

1. A diaphragm punching device, comprising a lower die structure, a guide column and an upper die structure, wherein the guide column is mounted on the lower die structure, and the upper die structure is slidably mounted on the guide column, characterized in that: The upper mold structure includes an upper mold plate, a cutting die and an adjusting drive assembly, the adjusting drive assembly is installed on the upper mold plate and is transmission-connected to the cutting die, the cutting die is located above the lower mold structure, the film punching equipment also includes a first camera, an optical axis angle measuring device, a second camera and a controller, the controller is communicatively connected to the first camera, the optical axis angle measuring device, the second camera and the adjusting drive assembly, the first camera and the second camera respectively capture images of the optical film on the lower mold structure, the controller identifies the long side of the optical film according to the images captured by the first camera and the second camera, the optical axis angle measuring device measures the optical axis angle of the optical film at the current position, the controller calculates the compensation angle according to the optical axis angle, the adjusting drive assembly drives the cutting die to rotate according to the compensation angle, and the cutting die moves downward along the guide column after rotation to punch the optical film.

2. The film punching device according to claim 1, characterized in that: The first camera, the optical axis angle measuring device and the second camera are fixed to the upper template.

3. The film punching device according to claim 1, characterized in that: The first camera, the optical axis angle measuring device and the second camera are located on the same straight line.

4. The film punching device according to claim 3, characterized in that: The optical axis angle measuring device is located between the first camera and the second camera.

5. The film punching device according to claim 1, characterized in that: The adjustment drive assembly includes a first translation drive member, a first connecting plate, a second translation drive member, a second connecting plate and a rotation drive member, the first translation drive member is fixed to the upper template, the first connecting plate is connected to the output end of the first translation drive member, the second translation drive member is fixed to the first connecting plate, the second connecting plate is connected to the output end of the second translation drive member, the rotation drive member is fixed to the second connecting plate, and the output end of the rotation drive member is connected to the cutting die.

6. The film punching device according to claim 5, characterized in that: The driving direction of the first translation drive member is perpendicular to the driving direction of the second translation drive member.

7. The film punching device according to claim 6, characterized in that: The first translation driving component and the second translation driving component are both linear modules.

8. The film punching device according to claim 1, characterized in that: The upper die structure also includes a mounting plate, which is transmission-connected to the adjustment drive assembly, and the cutting die is detachably mounted on the mounting plate.

9. The film punching device according to claim 1, characterized in that: The lower mold structure includes a main body, a sheet loading plate and a first locking member. The sheet loading plate is slidably mounted on the main body and locked by the first locking member.

10. The film punching device according to claim 1, characterized in that: The film punching equipment also includes a coil material feeding structure, which includes a bracket and two conveying rollers rotatably mounted on the bracket, the two conveying rollers are parallel to each other, and a transmission channel is formed between the two conveying rollers.

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