TWI496668B - Cutting device for cutting plate unit and method of manufacturing plate unit - Google Patents

Description

Cutting device for cutting sheet unit and method for manufacturing the sheet unit

The present invention relates to a cutting device and a method of manufacturing a sheet unit, and more particularly to a cutting device suitable for cutting a sheet unit having a protective film and a method of manufacturing the sheet unit.

Referring to Figures 1, 2, and 3, the conventional extruder 1 is suitable for manufacturing a sheet unit 10, and the sheet unit 10 is cut into a predetermined size. The sheet unit 10 includes a sheet of extruded substrate 101, and two sheets. The protective film 102 is attached to the surface of the substrate 101, respectively, and the substrate 101 may be an optical element such as a light guide plate or the like.

The extruding machine 1 comprises: an extruding unit 11 for forming a plastic material to form the substrate 101, a plurality of transfer mechanisms 13 for guiding the substrate 101 to advance along an output direction 12, and two respectively for attaching the protective film 102 A film unit 14 covering the surface of the substrate 101, a straight cutting device 15, and a plurality of lateral cutting devices 16 respectively mounted on the transfer mechanisms 13. The straight cutting device 15 is erectably mounted on a base frame 17 and includes a first cutter wheel 151 that rotates in situ, and the transverse cutting devices 16 are moved with the transfer mechanism 13 And including a second cutter wheel 161 traversable along a cutting direction 160, the cutting direction 160 is perpendicular to the conveying direction 12, due to how the first cutter wheel 151 is raised and lowered and the second cutter wheel 161 The traverse is a known technique and will not be described again.

When the extruding unit 11 extrudes the plastic material to form the substrate 101, the substrate 101 will advance along the conveying direction 12, and the film unit is The protective film 102 is attached to the upper surface and the lower surface of the substrate 101 to form the plate unit 10. When the sheet unit 10 is gradually approaching the straight cutting device 15, if the sheet unit 10 needs to be cut straight, the first cutter wheel 151 of the straight cutting device 15 is lowered and along The conveying direction 12 is cut, and the straight direction of the sheet unit 10 is cut. If the sheet unit 10 needs to be cut to a predetermined length, the second cutter wheel 161 erected on the transfer mechanism 13 moves along the cutting direction 160 and cuts the sheet unit 10, The cutting direction 160 is perpendicular to the conveying direction 12, so that the sheet unit 10 which is pushed out and has the protective film 102 can be cut into a predetermined shape by the cooperation of the first cutter wheel 151 and the second cutter wheels 161. size.

However, the straight cutting device 15 or the transverse cutting device 16 can easily cause the problem of the edge of the protective film 102, especially the protective film 102 located below, and the transverse cutting device is only used below. 16 for explanation.

Referring to Figures 3 and 4, the second cutter wheel 161 of the conventional transverse cutting device 16 is cut by the plurality of saw teeth 162 around a center of rotation, so that when the second cutter wheel 161 is used. When the saw teeth 162 are gradually rotated from top to bottom and the sheet unit 10 is cut, the tooth tips of the saw teeth 162 first scrape the protective film 102 above the substrate 101, then cut the substrate 101, and finally cut the substrate. The protective film 102 under 101. When the serrations 162 are cutting the protective film 102 located above, since the hard substrate 101 is held underneath, the protective film 102 located above when being cut is not easily pulled, but when the saw teeth 162 are under the cutting When the protective film 102 is protected, in the case where the protective film 102 lacks hard material support, it is easy to be The serrations 162 of the second cutter wheel 161 are pulled so that the edge of the protective film 102 is peeled off and a hem region 103 is formed.

Since the sheet unit 10 generates dust during the cutting process, the aforementioned dust particles are easily caught in the edge region 103, and therefore, when the cut sheet unit 10 is sandwiched during the conveyance and stacking, The dust of the side region 103 is liable to cause scratches or crushing on the surface of the substrate 101, resulting in deterioration of the protective effect. On the contrary, if the rotation direction of the second cutter wheel 161 is opposite, the protective film 102 located above the substrate 101 is likely to be generated on the plate unit 10.

On the other hand, when the serrations 162 of the second cutter wheel 161 are cutting the protective film 102 of the plate unit 10, not only the protective film 102 lacking the hard object support is easily pulled, but also the protective film 102 is easily melted by heat. And adhering to the wheel surface of the second cutter wheel 161, the quality of the plate unit 10 after cutting is lowered. It is obvious that the straight cutting device 15 and the lateral cutting device 16 of the conventional extruder 1 can cut the substrate unit 10, but the quality of the cutting is not good and needs to be improved.

A first object of the present invention is to provide a cutting device which can improve the cutting quality and can be used for cutting a sheet unit.

A second object of the present invention is to provide a method of manufacturing a sheet unit which can improve the cutting quality.

The cutting device for cutting a sheet unit, the sheet unit is advanced along a conveying direction, the sheet unit comprises a substrate, and at least one protective film attached to the substrate, and the cutting device comprises: A panel unit comprising a pair of cutting saws for cutting the sheet unit; and a slitting unit comprising at least one slitting knife for cutting the protective film of the sheet unit before the cutting saw is cut.

Preferably, the slitting unit comprises at least two slitting knives, each of which has a cutting edge for cutting the protective film, the cutting knives are spaced apart, and the cutting unit is cut The cut position is between the slitting knives.

Preferably, the slitting blades are disposed on the same side of the sheet unit.

Preferably, the slitting cutters are respectively disposed on different sides of the sheet unit.

Preferably, the slitting knives are disc-shaped structures.

Preferably, the film cutting unit is located below the sheet unit.

Preferably, the panel unit is located above the sheet unit, the slitting knife cuts a divided area on the protective film on the substrate, and the cutting saw of the panel unit corresponds to the divided area, and the cutting saw The divided area is cut by turning from top to bottom.

Preferably, the substrate of the sheet unit is extruded by an extrusion device, wherein the cutting device is located in front of the extrusion device, and the cutting device and the extrusion device are disposed along the conveying direction to make the cutting The device is used directly to cut the sheet unit that is ejected by the extrusion device. The extruding device may include a device such as an extruder.

Preferably, the cutting device further comprises a base frame, and the cutting film unit and the panel unit are mounted on the base frame.

Preferably, the cutting device further comprises a track and a mounting seat movable on the track, and the cutting film unit and the panel unit are mounted on the mounting seat.

The cutting device of the present invention can cut the sheet unit along the conveying direction, or cut the sheet unit perpendicular to the conveying direction, and the form of the slitting knife of the cutting unit is not particularly limited, and In the form of a single plate, a double plate, or a circular plate, preferably, the slitting unit comprises two slitting cutters, each having a single cutter To cut the cutting edges of the protective film, the cutting edges of the cutting knife are equidistant and spaced apart, and the cutting saw of the cutting unit is between the cutting edges of the cutting blades.

The cutting unit of the cutting device of the present invention can be a fixed structure or a fine-tuned structure, and the fine-tuning of the slitting knife can make the cutting knife accurately match the protective film. s position.

The sheet unit of the present invention may include: a light guide plate, a diffusion plate, a polarizing plate, and the like.

The beneficial effect of the present invention is that the cutting film unit can be prevented from being cut when the sheet cutting unit is cut by pre-cutting the protective film of the sheet unit before cutting the cutting saw. The protective film is pulled to improve the cutting quality of the cutting device.

The foregoing and other technical aspects, features and advantages of the present invention will be apparent from the description of the accompanying drawings.

Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figures 5, 6, 7, and 8, a first preferred embodiment of the cutting device 30 of the present invention is for straight cutting a side of a sheet unit 2 which is movable along a conveying direction 32. Advancing, and including a substrate 21 extruded by an extruding device (not shown), a first protective film 22 attached to the bottom surface of the substrate 21, and a second protection attached to the top surface of the substrate 21. Membrane 23.

The cutting device 30 of the present embodiment comprises: a base frame 31, a panel unit 4 mounted on the base frame 31 above the sheet unit 2, and one mounted on the base frame 31 and located on the sheet unit 2 The lower film cutting unit 5 is located behind the conveying direction 32 of the panel unit 4 for cutting the first protective film 22. In the present embodiment, the panel unit 4 includes a lifting base 41 mounted on the base frame 31, and a cutting saw 42 mounted on the lifting base 41. In the preferred embodiment, the cutting saw 42 is a piece. The rotatable circular saw has a plurality of serrations 421 around a center of rotation, and the lifting base 41 is mounted on the base frame 31 in an adjustable left and right position and can be lifted and lowered, and simultaneously drives the cutting saw 42 to move and lift However, since the lifting seat 41 is displaced and lifted as a known technique, it is not a modification of the present invention and will not be described again.

The film cutting unit 5 of the embodiment comprises a knife seat 51 mounted on the base frame 31, two slitting knife blades 52 disposed at right and left intervals, and a cutter knife 52 rotatably mounted on the cutter blade 52. a fixing member 53 on the blade holder 51, wherein the slitting blades 52 are spaced apart on the same side of the sheet unit 2, or In the preferred embodiment, the slitting blades 52 are spaced apart on the same side of the sheet unit 2, and the slitting blades 52 are disc-shaped. And having a cutting edge 521 surrounding the fixing member 53, but in design, the slitting knife 52 of the present invention is not limited to a circular shape, and may be a single piece and have a toothed edge in the form of a plate, or The plate-shaped blade provided for the two pieces of spacers may also have a zigzag shape as shown by the cutting saw 42.

When the cutting device 30 of the embodiment is in use, the sheet unit 2 which is ejected by the extruding device (not shown) and pasted with the first protective film 22 and the second protective film 23 passes through the slit film first. The unit 5, then passes through the panel unit 4, and the panel unit 4 is lowered, and the sheet metal unit 2 is cut by the cutting saw 42 in the opposite direction of the conveying direction 32. At the same time, the slitting blades 52 of the slitting unit 5 cut the first protective film 22 of the sheet unit 2 in advance, and the cutting edge 521 of the slitting cutter 52 is used for the first protection. A strip-shaped divided region 221 is cut out on the film 22, and the cutting saw 42 of the panel unit 4 is a divided region 221 corresponding to the first protective film 22, and the sheet is cut after the slitting unit 5 is cut. Unit 2 performs cutting.

When the cutting saw 42 of the panel unit 4 cuts through the sheet unit 2, since the bottom of the second protective film 23 has the substrate 21 of hardness, when the saw teeth 421 of the cutting saw 42 pass the second protective film 23 and the substrate 21 can be smoothly cut, and when the saw teeth 421 pass through the bottom edge of the substrate 21, since the cutting saw 42 corresponds to the divided region 221 of the first protective film 22, the aforementioned sawtooth 421 does not hook the portion of the first protective film 22 other than the divided region 221, so the cutting device 30 of the embodiment The design can surely improve the absence of the cutting of the first protective film 22 passing through the cutting saw 42 and ensure that the first protective film 22 and the substrate 21 are not mixed with dust, and the first can be avoided. The protective film 22 is pulled and thermally fused to the cutting saw 42. In the above description, the cutting saw 42 of the panel unit 4 is cut from top to bottom, so that the first protective film 22 located below is easily pulled by the cutting saw 42, assuming the rotation direction of the cutting saw 42 On the contrary, the second protective film 23 located above is easily pulled and detached by the cutting saw 42. At this time, the film cutting unit 5 is preferably mounted above the plate unit 2, and is not described with reference to the drawings.

Referring to Figures 9, 10 and 11, a second preferred embodiment of the cutting device 30 of the present invention is also used for cutting the sheet unit 2 and is adapted to be mounted on a base frame 31 of a transfer mechanism (not shown). The difference from the first preferred embodiment is that the first preferred embodiment is cut (i.e., longitudinally cut) parallel to the conveying direction 32 of the sheet unit 2, and the second preferred embodiment is vertical. The cutting direction 32 is cut (ie, laterally cut). In order to achieve the above object, the cutting device 30 of the second preferred embodiment of the present invention also includes a panel unit 4, and a slitting unit 5 mounted on the panel unit 4 and moving therewith.

The cutting device 30 of the second preferred embodiment comprises a rail 43, the mounting of which is not limited, a mounting seat 44 movably mounted on the rail 43, the slitting unit 5 and the The panel unit 4 is mounted on the mount 44, and as the mount 44 moves, the first protective film 22 of the sheet unit 2 is cut. That is, the film cutting unit 5 also includes a knife seat 51 mounted on the mounting seat 44, two spaced slitting cutters 52, and two fixing members for mounting the cutter blades 52 on the holder 51. 53.

When the mounting seat 44 is advanced along the rail 43, the cutter 52 of the slitting unit 5 first contacts the sheet unit 2 and cuts the first protective film 22 of the sheet unit 2, and then, The cutting saw 42 cuts the sheet unit 2, and the cutting position is located between the cutting edges 521 of the slitting blades 52, so that the cutting saw 42 can be prevented from pulling the first protective film during cutting. 22, and preventing the cutting saw 42 from separating the first protective film 22 from the substrate 21.

In the design, the cutting saw 42 of the panel unit 4 of the present invention is not limited to the circular saw disclosed in the embodiment, that is, as long as the sheet unit 22 can be cut, it is suitable for use in the present invention. However, it is not necessary for the slitting unit 5 of the present embodiment to have the slitting knife 52 at the same time, that is, the slitting unit 5 of the present invention can perform the operation of cutting the membrane as long as it has one slitting blade 52, and the like The slitting knife 52 may be in the form of a disk or a plate or other suitable form for cutting the first protective film 22, and the form of the film cutting unit 5 is not in any form. It is limited to those disclosed in the examples. Of course, the cutting device 30 of the present invention may include two cutting film units 5 disposed above and below to cut the first protective film 22 and the second protective film 23, respectively.

It can be seen from the above description that the cutting device 30 of the present invention can also cut the first plate member 2 having the first protective film 22 and the second protective film 23, and can also use the film cutting unit 5 to The protective film 22 is cut to prevent the first protective film 22 from being pulled, thermally melted, and adhered to the cutting saw 42 when the cutting saw 42 is cut. It is of course also possible to prevent the first protective film 22 from being detached from the substrate 21 by the cutting saw 42 when it is cut, so that the cutting device 30 of the present invention has not only the structure Innovative, it can also improve the quality of cutting.

Specifically, the sheet unit 2 of the present invention is manufactured by the following manufacturing method: preparing the sheet unit 2, the sheet unit 2 including the substrate 21, and at least one first protective film 22 attached to the substrate 21. After the first protective film 22 of the sheet unit 2 is cut by the slitting knife 52 of the slitting unit 5, the sheet unit 2 is cut by the cutting saw 42 of the panel unit 4.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

2‧‧‧Sheet unit

21‧‧‧Substrate

22‧‧‧First protective film

221‧‧‧Division area

23‧‧‧Second protective film

30‧‧‧ Cutting device

31‧‧‧ pedestal

32‧‧‧Transport direction

4‧‧‧ Panel unit

41‧‧‧ Lifting seat

42‧‧‧ cutting saw

421‧‧‧Sawtooth

43‧‧‧ Track

44‧‧‧ Mounting

5‧‧‧Cutting unit

51‧‧‧ knife holder

52‧‧‧Cutting knife

521‧‧‧ cutting edge

53‧‧‧Fixed parts

Figure 1 is a side view of a conventional extruder; Figure 2 is a schematic view showing the relative relationship between the conventional extruder and a plate unit; Figure 3 is a front view of a conventional cutting device FIG. 4 is a schematic perspective view of one of the conventional cutting devices; FIG. 5 is a perspective view of a first preferred embodiment of the cutting device of the present invention, illustrating the relative relationship of the main components of the cutting device; Figure 6 is a side elevational view of the first preferred embodiment; Figure 7 is a front elevational view of the first preferred embodiment; Figure 8 is a cutaway view of the first preferred embodiment; 9 is a top plan view showing a second preferred embodiment of the cutting device of the present invention, illustrating the relative relationship of the main components of the cutting device; FIG. 10 is a front view of the second preferred embodiment; 11 is a side view of the second preferred embodiment.

2‧‧‧Sheet unit

21‧‧‧Substrate

22‧‧‧First protective film

23‧‧‧Second protective film

30‧‧‧ Cutting device

31‧‧‧ pedestal

32‧‧‧Transport direction

4‧‧‧ Panel unit

41‧‧‧ Lifting seat

42‧‧‧ cutting saw

421‧‧‧Sawtooth

5‧‧‧Cutting unit

51‧‧‧ knife holder

52‧‧‧Cutting knife

521‧‧‧ cutting edge

53‧‧‧Fixed parts

Claims (9)

A cutting unit for a sheet unit for cutting a sheet unit, the sheet unit advancing along a conveying direction, the sheet unit comprising a substrate, and at least one protective film attached to the substrate, and the cutting The device comprises: a panel unit comprising a pair of cutting saws for cutting the sheet unit, the panel unit being located above the sheet unit; and a slitting unit comprising at least one slitting knife for performing the cutting saw Cutting the protective film of the sheet unit before cutting, the slitting unit is located under the sheet unit; the slitting knife cuts a divided area on the protective film on the substrate, and the cutting saw of the cutting unit is The area is divided, and the cutting saw is rotated from top to bottom to cut the divided area. The cutting unit of the sheet unit according to claim 1, wherein the slitting unit comprises at least two slitting blades, each of which has a cutting edge for cutting the protective film, the cutting film The knives are spaced apart and the cutting position of the panel unit is between the slitting knives. The cutting unit of the sheet unit according to claim 2, wherein the slitting cutters are disposed on the same side of the sheet unit. The cutting unit of the sheet unit according to claim 2, wherein the slitting cutters are respectively disposed on different sides of the sheet unit. The cutting unit of the sheet unit according to claim 2, wherein the slitting knives have a disc-shaped structure. a cutting device for a sheet unit according to claim 1, the sheet unit The substrate is extruded by an extrusion device, wherein the cutting device and the extrusion device are disposed along the conveying direction, and the cutting device is located in front of the extrusion device, so that the cutting device is directly used to cut the extrusion The plate unit that is pushed out by the device. The cutting device of the sheet unit according to claim 1, wherein the cutting device further comprises a base frame, and the slitting film unit and the panel unit are mounted on the base frame. The cutting device of the sheet unit according to claim 1, wherein the cutting device further comprises a rail, and a mounting seat movable on the rail, the slitting unit and the panel unit are mounted On the mount. A method of manufacturing a sheet unit, comprising: preparing a sheet unit, the sheet unit including a substrate, and at least one protective film attached to the substrate; and cutting device using the sheet unit according to claim 1 Cut the sheet unit.