Polarizing film edge cutting device

Abstract

The utility model relates to a polarizing film edge cutting device which comprises a rack, a lower die holder, an upper die holder, an upper die plate and a driving piece, and the lower die holder is detachably connected to the lower end of the rack; the driving part is arranged at the upper end of the rack and drives the upper template to move up and down; the upper die base is detachably connected to the bottom of the upper die plate, and the upper die base is arranged right opposite to the lower die base. The lower die holder is provided with a cutting groove which is used for placing a polarizing film and avoiding the arch surface of the polarizing film, the shape of the upper die holder is matched with that of the cutting groove, and the outer edge of the upper die holder is matched with the cutting groove to cut the edge of the polarizing film.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lens processing equipment technical field especially relates to a polarized film edge cutting device. BACKGROUND

[0002] Polarized film is usually attached on the sun lens, in order to ensure the attachment effect, the polarized film usually needs to be processed into the shape adapting to the surface arc of the lens, that is, the film shaping. The film shaping usually adopts hot-pressing mold to shape the curvature, the plane film is softened by heating, and then the softened film is extruded into a curved surface by the mold, as shown in the drawing. After the film shaping is completed, the edge needs to be cut to obtain the edge shape adapting to the lens. The film is usually cut by using a mold, the film is clamped by setting the upper mold core and the lower mold core adapting to the surface of the film, and then the edge of the film outside the mold core is cut off by a cutter, that is, the required polarized film is obtained, as shown in the drawing. However, the above method has a big problem, that is, a set of cutting mold can only adapt to one specification of polarized film, and the lens specifications produced by the lens manufacturer are various, such as lenses with different curvatures but the same length and width, which leads to high mold opening cost and high operating cost. Figure 1 CONTENT OF THE UTILITY MODEL Figure 2 The utility model discloses a polarized film edge cutting device, which can cut polarized films with the same length and width but different curvatures (i.e. different heights of arch surfaces) without replacing the mold, and has higher universality.

[0003] The utility model discloses a polarized film edge cutting device, which can cut polarized films with the same length and width but different curvatures (i.e. different heights of arch surfaces) without replacing the mold, and has higher universality.

[0004] In order to achieve the above-mentioned purpose, the utility model discloses a polarized film edge cutting device, which comprises a rack, a lower mold base, an upper mold base, an upper mold plate and a driving part, the lower mold base is detachably connected to the lower end of the rack, the driving part is arranged at the upper end of the rack, the driving part drives the upper mold plate to move up and down, the upper mold base is detachably connected to the bottom of the upper mold plate, and the upper mold base is arranged opposite to the lower mold base, the cutting groove for placing the polarized film and avoiding the arch surface of the polarized film is arranged on the lower mold base, the shape of the upper mold base is adapted to the shape of the cutting groove, and the outer edge of the upper mold base cooperates with the cutting groove to cut the edge of the polarized film.

[0005] After the above-mentioned setting, the cutting groove and the upper mold base can form a shearing structure, and then the polarized film is cut, the arch surface of the polarized film with different curvatures can be avoided by the cutting groove, and the length and width of the polarized film after cutting are limited by the length and width of the cutting groove, that is, the utility model can be used to cut the polarized film with the same length and width but different curvatures, and has higher universality.

[0006] ​Preferably, a plurality of guide rods are arranged on the frame, and the upper die seat is in sliding connection with the guide rods; a spring is sleeved on the guide rod, one end of the spring abuts against the frame, and the other end of the spring abuts against the upper die plate. In this way, the accuracy of die closing can be ensured, and the spring can assist in die opening.

[0007] Preferably, a plurality of limiting rods for limiting the polarized film in the width direction are arranged on the lower die seat, and the upper die seat is provided with a corresponding avoiding hole corresponding to the limiting rod. Generally, the width of the polarized film before shaping is adapted to the lens, so that the generation of waste is reduced, and the cost is saved. Limiting the polarized film only in the width direction can ensure that the polarized film is placed in the cutting groove without being too deviated, so that the polarized film needed can be cut and obtained, and manual operation is facilitated.

[0008] Preferably, at least one air jet long hole is arranged on both sides of the length direction of the upper die seat, the hole opening of the air jet long hole is in a horizontal direction, and the length direction of the air jet long hole is a vertical direction; the upper die seat is further provided with an air cavity, the air jet long hole is in communication with the air cavity, and the air cavity is connected with an external gas source. When the upper die seat is withdrawn from the cutting groove, the air jet long hole is connected with the external gas source, and the corner waste generated by cutting can be blown away, so that the operator does not need to clean manually, and the operation efficiency is improved.

[0009] Preferably, the air jet long hole is arranged in a spaced manner from the bottom surface of the upper die seat. In this way, the air jet long hole does not interfere with the cutting of the polarized film, and the quality of edge cutting can be ensured.

[0010] Preferably, the lower die seat is provided with an air jet vertical hole and a communication hole corresponding to the air jet long hole in a one-to-one manner, the opening of the air jet vertical hole is arranged upward, the air jet vertical hole is in communication with the inner cavity of the cutting groove through the communication hole, and the air jet vertical hole is arranged close to the length direction of the groove wall of the cutting groove. After the air jet long hole is arranged in this way, the air jet long hole can still be in communication with the air jet vertical hole through the communication hole when the air jet long hole does not protrude from the cutting groove. At this time, the air jet long hole is connected with the external gas source, the waste can be first blown upward, the problem of "adhesion" of the waste to the lower die seat is avoided, and then the waste can be easily blown to the side by the air jet long hole, so that the waste is easy to clean.

[0011] Preferably, a pipe joint is arranged on the top surface of the upper die seat, the pipe joint is in communication with the air cavity, the air cavity is connected with the external gas source through the pipe joint, and the upper die plate is provided with an avoiding groove avoiding the pipe joint, and the avoiding groove penetrates the upper die plate. In this way, the air cavity of the upper die seat can be conveniently connected with the external gas source through the pipe joint, and the pipe joint and the connecting air pipe do not interfere with the cutting of the polarized film.

[0012] Preferably, the cutting groove is a hole structure through both ends, the rack is provided with a drop opening matched with the cutting groove, and the drop opening is provided below with a collection frame. After the polarizing film is cut, it can fall from the bottom of the cutting groove into the collection frame, and the operator only needs to load after cutting, thereby improving the operation efficiency.

[0013] The utility model has the advantages of the following beneficial effects:

[0014] The utility model discloses a cutting groove and upper die seat cooperation can cut the edge to the polarizing film, for the polarizing film of different curvature, its arch surface can be avoided by cutting groove, and the length and width of cutting groove limit the length and width of the polarizing film after cutting, namely the utility model can be used to cut the polarizing film of same length and width but different curvature, and the versatility is strong. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the schematic diagram of the polarizing film that has not been cut.

[0016] Figure 2 It is the schematic diagram of the polarizing film after cutting.

[0017] Figure 3 It is the schematic diagram of the utility model.

[0018] Figure 4 It is the schematic diagram of another angle of the utility model.

[0019] Figure 5 It is the schematic diagram of upper die seat and lower die seat of the utility model.

[0020] Figure 6 It is the sectional view of upper die seat and lower die seat of the utility model.

[0021] Figure 7 It is the sectional view when the polarizing film is placed in the lower die seat.

[0022] Explanation of main component symbols:

[0023] Polarizing film 10;

[0024] Rack 20, driving part 21, guide rod 22, drop opening 23;

[0025] Lower die seat 30, cutting groove 31, limiting rod 32, jet vertical hole 33, communication hole 34;

[0026] Upper die plate 40, avoiding hole 41, avoiding groove 42;

[0027] Upper die seat 50, jet long hole 51, air cavity 52. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0029] like Figures 3-7 As shown, the utility model discloses a device for trimming a polarizing film 10, which includes a frame 20, a lower die base 30, an upper die base 50, an upper die plate 40, and a driving member 21. The lower die base 30 is detachably connected to the lower end of the frame 20 by bolts. The driving member 21 is bolted to the upper end of the frame 20, and the driving member 21 drives the upper die plate 40 to move up and down. The driving member 21 can be an electric hydraulic cylinder or a pneumatic cylinder. The upper die plate 40 is placed horizontally, and the upper die base 50 is detachably connected to the bottom of the upper die plate 40 by bolts, and the upper die base 50 is arranged opposite the lower die base 30. The screws for locking the upper die base 50 are countersunk to prevent the screws from contacting the polarizing film 10. In order to ensure the accuracy of mold closing and assist in mold separation, a number of guide rods 22 are provided on the frame 20. The upper mold base 50 is slidably connected to the guide rods 22, and a guide sleeve can be provided on the upper mold base 50 to cooperate; in addition, a spring is also sleeved on the guide rod 22, one end of the spring abuts the frame 20, and the other end abuts the upper template 40.

[0030] The lower mold base 30 is provided with a cutting groove 31 for accommodating the polarizing film 10 while avoiding the curved surface of the film 10. The length of the cutting groove 31 is the desired length of the polarizing film 10, and the width of the cutting groove 31 is the desired width of the polarizing film 10. The cutting groove 31 has a certain depth. Generally, sunglass lenses of the same length and width have a limited range of curvature. The depth of the cutting groove 31 should be able to accommodate the maximum curvature of the corresponding length and width. The cross-sectional shape of the upper mold base 50 is adapted to the shape of the cutting groove 31. The outer edge of the upper mold base 50 cooperates with the wall of the cutting groove 31 to trim the polarizing film 10. The polarizing film 10 can be trimmed by cooperating with the cutting groove 31 and the upper mold base 50. For polarizing films 10 with different curvatures, their arched surfaces can be avoided by the cutting groove 31, and the length and width of the cutting groove 31 limit the length and width of the polarizing film 10 after cutting. That is, the utility model can be used to cut polarizing films 10 with the same length and width but different curvatures, and has strong versatility.

[0031] The arch surface of the polarized film 10 with a certain curvature is placed into the cutting groove 31, at this time the positioning of the polarized film 10 is completed, in order to further ensure the position accuracy of the polarized film 10 and ensure the cutting quality, a plurality of limiting rods 32 for limiting the polarized film 10 in the width direction are further arranged on the lower die seat 30, in the case, four limiting rods 32 are arranged, which are arranged close to the four corners of the cutting groove 31, and the outer wall of the limiting rod 32 is tangent to the extension of the width direction groove wall close to it. The avoiding hole 41 corresponding to the limiting rod 32 is arranged on the upper die seat 50. Generally, the width of the polarized film 10 before shaping is matched with the lens, which can reduce the generation of waste and is beneficial to cost saving, therefore, only limiting the polarized film 10 in the width direction, it is only necessary to ensure that the polarized film 10 is placed in the cutting groove 31 without being too much deviated (in the length direction), so as to ensure that the polarized film 10 required by cutting is obtained, which is beneficial to manual operation.

[0032] In order to improve the operation efficiency, the following designs are made in the case:

[0033] 1. The cutting groove 31 is designed as a hole structure penetrating through both ends, and a falling opening 23 matched with the cutting groove 31 is arranged on the rack 20, and a collecting frame is arranged below the falling opening 23, which can be placed on the ground or connected to the rack 20 like a drawer. After the polarized film 10 is cut, it can fall from the bottom of the cutting groove 31 to the collecting frame, and the operator only needs to feed after cutting, which improves the operation efficiency.

[0034] 2. At least one air jet long hole 51 is arranged on both sides of the length direction of the upper die seat 50, and the number of air jet long holes 51 on one side of the upper die seat 50 is three in the case. The hole opening of the air jet long hole 51 is in the horizontal direction, that is, the depth direction of the air jet long hole 51 is in the horizontal direction, and the length direction of the air jet long hole 51 is in the vertical direction. The air jet long hole 51 is arranged in a spaced manner from the bottom surface of the upper die seat 50, so as not to interfere with the cutting of the polarized film 10 and to ensure the cutting quality. An air cavity 52 is further arranged in the upper die seat 50, which can be obtained by drilling a blind hole or a through hole and then sealing the hole opening. All air jet long holes 51 are connected to the air cavity 52. A pipe joint is arranged on the top surface of the upper die seat 50, which is connected to the air cavity 52, and the air cavity 52 is connected to the external gas source through the pipe joint. An avoiding groove 42 avoiding the pipe joint is arranged on the upper die plate 40, which penetrates through the upper die plate 40. The avoiding groove 42 can facilitate the connection of the air cavity 52 of the upper die seat 50 with the external gas source, and can also avoid the interference of the pipe joint and the connecting air pipe with the cutting of the polarized film 10.

[0035] When the upper die holder 50 starts to exit from the cutting groove 31, the air jet long hole 51 is connected to the external air source, and when the air jet long hole 51 starts to expose the upper groove of the cutting groove 31, the air jet long hole 51 sprays air to the outside of the upper die holder 50, and the corner waste generated by cutting can be blown away, and the operator does not need to clean manually, thereby improving the operation efficiency.

[0036] Because the waste may be "stuck" to the lower die holder 30 sometimes, in order to solve this problem, the air jet vertical hole 33 and the communication hole 34 corresponding to the air jet long hole 51 are arranged on the lower die holder 30, the opening of the air jet vertical hole 33 is arranged upward, the air jet vertical hole 33 is communicated with the inner cavity of the cutting groove 31 through the communication hole 34, and the air jet vertical hole 33 is arranged close to the length direction of the groove wall of the cutting groove 31. After the arrangement, when the air jet long hole 51 does not extend out of the cutting groove 31, the air jet long hole 51 can still be communicated with the air jet vertical hole 33 through the communication hole 34, at this time, the air jet long hole 51 is connected to the external air source, and the waste can be first blown upward, and then the air jet long hole 51 can easily blow the waste to the side, thereby ensuring that the waste is cleaned.

[0037] The air control of the air jet long hole 51 can be triggered by setting a travel switch, and the conventional control circuit and mode are not described in detail.

[0038] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A polarizing film trimming device, characterized in that: It includes a frame, a lower die base, an upper die base, an upper die plate and a driving member, wherein the lower die base is detachably connected to the lower end of the frame; the driving member is arranged at the upper end of the frame, and the driving member drives the upper die plate to move up and down; the upper die base is detachably connected to the bottom of the upper die plate, and the upper die base is arranged opposite to the lower die base; the lower die base is provided with a cutting groove for placing the polarizing film and avoiding the arch surface of the polarizing film, the shape of the upper die base is adapted to the shape of the cutting groove, and the outer edge of the upper die base cooperates with the cutting groove to cut the edge of the polarizing film.

2. The polarizing film edge trimming device according to claim 1, characterized in that: The frame is provided with a plurality of guide rods, and the upper die seat is slidably connected to the guide rods; a spring is sleeved on the guide rod, one end of the spring abuts against the frame, and the other end of the spring abuts against the upper die plate.

3. The polarizing film edge trimming device according to claim 1, wherein: The lower die base is provided with a plurality of limiting rods for limiting the polarizing film in the width direction, and the upper die base is provided with avoidance holes corresponding to the limiting rods one by one.

4. The polarizing film edge trimming device according to claim 1, wherein: At least one long jet hole is provided on both sides of the length direction of the upper mold base, the opening of the long jet hole is facing the horizontal direction, and the length direction of the long jet hole is the vertical direction; an air cavity is also provided on the upper mold base, the long jet hole is connected to the air cavity, and the air cavity is connected to an external air supply source.

5. The polarizing film edge trimming device according to claim 4, characterized in that: The long air-jet hole is spaced apart from the bottom surface of the upper die seat.

6. The polarizing film edge trimming device according to claim 4 or 5, characterized in that: The lower die base is provided with jet vertical holes and connecting holes corresponding to the jet long holes one by one. The openings of the jet vertical holes are set upward, and the jet vertical holes are connected with the inner cavity of the cutting groove through the connecting holes. The jet vertical holes are set close to the groove wall in the length direction of the cutting groove.

7. The polarizing film edge trimming device according to claim 4, characterized in that: A pipe joint is provided on the top surface of the upper mold base, the pipe joint is connected to the air cavity, and the air cavity is connected to the external air supply source through the pipe joint; an avoidance groove for avoiding the pipe joint is provided on the upper mold plate, and the avoidance groove passes through the upper mold plate.

8. The polarizing film edge trimming device according to claim 1, wherein: The cutting groove is a hole-shaped structure with two ends passing through. The frame is provided with a drop opening adapted to the cutting groove, and a collecting frame is provided below the drop opening.

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