CN117799001A - Die cutting production process suitable for irregular inner frame of hard film material - Google Patents
Die cutting production process suitable for irregular inner frame of hard film material Download PDFInfo
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- CN117799001A CN117799001A CN202410044089.5A CN202410044089A CN117799001A CN 117799001 A CN117799001 A CN 117799001A CN 202410044089 A CN202410044089 A CN 202410044089A CN 117799001 A CN117799001 A CN 117799001A
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- cutting
- die
- hard film
- inner frame
- film material
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- 238000005520 cutting process Methods 0.000 title claims abstract description 104
- 239000000463 material Substances 0.000 title claims abstract description 74
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 230000001788 irregular Effects 0.000 title claims abstract description 18
- 239000002699 waste material Substances 0.000 claims abstract description 16
- 238000004080 punching Methods 0.000 claims abstract description 10
- 239000012790 adhesive layer Substances 0.000 claims description 21
- 238000003825 pressing Methods 0.000 claims description 17
- 239000002131 composite material Substances 0.000 claims description 13
- 239000002390 adhesive tape Substances 0.000 claims description 9
- 239000010410 layer Substances 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000013329 compounding Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 7
- 238000001125 extrusion Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The invention relates to a die-cutting production process suitable for irregular inner frames of hard film materials, wherein the hard film materials are provided with a plurality of inner frames, and the die-cutting production process comprises the following steps: before die cutting the inner frames of the formed hard film material, at least one pre-punched hole is punched in the corresponding area of each inner frame. The minimum distance of the contour line of the pre-punched hole from the contour line of the inner frame is larger than 1mm. By adopting the process, the pre-punched holes are punched in the inner frame area before the inner frame is punched, so that the hollow structure is formed, and when the outer frame and the inner frame of the hard film are punched, the space inside the hard film can bear extrusion and tension, so that burrs can be prevented from being generated on punching edges, the contour cutting precision of the inner frame of a product is ensured, waste materials are separated more thoroughly, waste materials are discharged conveniently, the extrusion pressure of the cutting edge of the die in the horizontal direction can be reduced, and the damage of the cutting edge is avoided.
Description
Technical field:
the invention relates to the technical field of film material composite products, in particular to a die cutting production process suitable for irregular inner frames of hard film materials.
The background technology is as follows:
at present, electronic products such as computers, mobile phones, tablet computers and the like are increasingly precise in design and higher in size requirement, so that the requirements on various composite die-cutting components used in the electronic products are also higher and higher. In certain products, a hard film material or a composite material of a hard sheet material and an adhesive layer, such as a polycarbonate double faced adhesive component, and the hard material is required to be processed into various irregular or asymmetric inner holes or inner frames, wherein the component is easy to cause incarceration of a cutting edge and the material and generate burrs and waste discharge difficulty due to the hardness and thickness of the material by using a common cutting die and a conventional mode; on the other hand, because the tension of the hard material is not released in the punching process, and the irregular blade is stressed unevenly, the material is easy to crack and even crack, and the cutting die is damaged.
The invention comprises the following steps:
the invention aims to overcome the defects in the prior art and provides a die cutting production process suitable for irregular inner frames of hard film materials.
The technical scheme adopted by the invention is as follows: the die cutting production process suitable for the irregular inner frames of the hard film material comprises the following steps of: before die cutting the inner frames of the formed hard film material, at least one pre-punched hole is punched in the corresponding area inside each inner frame.
In the production process, the minimum distance between the contour line of the pre-punched hole and the contour line of the inner frame is larger than 1mm.
Preferably, the pre-punched hole has a contour line at a distance of 1-3mm from the contour line of the inner frame.
In one embodiment, the die-cutting assembly comprises a hard film material, a double-sided adhesive layer attached to the lower surface of the hard film material and a release film layer, wherein the hard film material is provided with a plurality of irregularly-shaped inner frames and inner holes, the double-sided adhesive layer is provided with the inner frames and the inner holes corresponding to the positions and the shapes of the hard film material, and the production process comprises the following steps:
s1, carrying out first flat cutter die cutting on a composite material belt sequentially provided with a transition release film, a double faced adhesive tape and a support release film from top to bottom through a first die cutter die cutting, wherein the first flat cutter die cutting firstly forms an inner frame contour line, a pair of inner hole contour lines and a pair of die cutting positioning holes in the double faced adhesive tape on the composite material belt, and then forms an outer frame contour line of the double faced adhesive tape, a cutting line at the edge of the material belt and a first positioning mark line after a step distance; then removing the transition release film material belt, the waste outside the double-sided adhesive layer frame and the waste inside the frame; the formation is that from bottom to top in proper order: a support bottom release film material belt, a double-sided adhesive layer with an inner frame and a positioning hole;
s2, compounding a hard film material and a bottom support release film material belt on the double-sided adhesive layer in the step S1, carrying out second flat cutter die cutting through a second die cutter die cutting, respectively punching pre-punched holes in corresponding areas of an inner frame of the hard film material, forming a hard film material outer frame after two steps, and forming a second positioning mark line on the double-sided adhesive layer;
s3, carrying out third flat cutter die cutting on the composite material obtained in the step S2 through a third die cutter die, punching an inner frame and an inner hole on the hard film material, cutting the die cutting depth of the inner frame cutting edge and the inner hole cutting edge to the cutting through support bottom release film material belt, removing waste materials in the inner frame hole and support bottom protection film material belt, and cutting to obtain a finished product.
In the process, the upper die of the third die-cutting knife die is provided with an inner frame blade and an inner hole blade, a pressing plate is arranged in an area outside the inner frame blade and the inner hole blade, an elastic part is arranged between the pressing plate and the knife template, the thickness of the pressing plate is smaller than the heights of the inner frame blade and the inner hole blade, so that the blade can protrude out of the pressing plate, and the upper template is also provided with a sleeve needle penetrating through the pressing plate and corresponding to a positioning hole on the material belt.
The inner frame blade and the inner hole blade are outer straight inner oblique blades, namely the outer side face of the blade is perpendicular to the surface of the blade template, and the included angle of the outer side face of the blade of the inner side face of the blade is 20-25 degrees.
By adopting the process, the pre-punched holes are punched in the irregular inner frame area before the inner frame is punched, so that the hollow structure is formed, and when the outer frame and the inner frame of the hard film are punched, the space inside the hard film can bear extrusion and tension, so that burrs can be avoided from being generated on punching edges, the contour cutting precision of the inner frame of a product is ensured, waste materials are separated more thoroughly, waste materials are discharged conveniently, the extrusion pressure of the cutting edge of the die in the horizontal direction can be reduced, and the damage of the cutting edge is avoided.
Description of the drawings:
FIG. 1 is a schematic view of an exploded construction of a die cutting assembly in accordance with one embodiment of the present invention;
FIG. 2-1 is a schematic view of die cutting effect and layer of step S1 in the production process of the present invention;
FIG. 2-2 is a schematic view of die cutting effect and layering of step S2 in the production process of the present invention;
FIGS. 2-3 are schematic diagrams of die cutting effect and layering of step S3 in the production process of the present invention;
FIGS. 2-4 are schematic diagrams of three die-cut effects superimposed;
fig. 3 is a schematic plan view of the third die cutter in step S3.
The specific embodiment is as follows:
as shown in fig. 1, the process of the invention is suitable for die cutting of a hard film material, the die cutting assembly comprises a hard film material 1, a double-sided adhesive layer 2 attached to the lower surface of the hard film material 1 and a release film layer 3, the hard film material 1 is provided with a plurality of inner frames 101 and inner holes 102, in this embodiment, the inner frames 101 are irregularly shaped (including asymmetric shapes), the inner holes 102 are circular holes, and the release film layer 3 and the double-sided adhesive layer 2 are provided with inner frames and inner holes corresponding to the position shape of the hard film material 2. The release film layer 3 can also be transferred to a complete new release film in the following steps.
In connection with the embodiments shown in fig. 2-1 to 2-4, the production process comprises the following steps:
s1, carrying out first flat cutter die cutting on a composite material belt sequentially provided with a transition release film G1, a double faced adhesive tape S1 and a support release film L1 from top to bottom through a first die cutter die cutting die D1, wherein the first flat cutter die cutting die is used for firstly forming an inner frame profile line D101, a pair of inner hole profile lines D102 and a pair of die cutting positioning holes D103 in the double faced adhesive tape 2 on the composite material belt, and then forming an outer frame profile line D104 of the double faced adhesive tape, a material belt edge cutting line D105 and a first positioning mark line D106 after a step distance; then removing the transition release film material belt, the waste outside the double-sided adhesive layer frame and the waste inside the frame; the formation is that from bottom to top in proper order: a support bottom release film material belt, a double-sided adhesive layer 2 with an inner frame and positioning holes;
s2, compounding a hard film material 1 and a bottom support release film L1 material belt composite protective film material belt B1 on the double-sided adhesive layer in the step S1, carrying out second flat cutter die cutting through a second die cutter die D2, respectively punching pre-punched holes D201 in corresponding areas of an inner frame of the hard film material by the second flat cutter die cutting, forming a hard film material outer frame D202 after two steps, and forming a second positioning mark line D203 on the double-sided adhesive layer 2; the pre-punched hole D201 corresponds to the cutting edge die-cutting depth to cut through the support bottom release film L1 material belt; the hard film outer frame D202 is cut to the double-sided adhesive layer 2 corresponding to the cutting edge die cutting depth;
s3, carrying out third flat cutter die cutting on the composite material obtained in the step S2 through a third die cutter die D3, punching a hard film inner frame D301 and a hard film inner hole D302 on the hard film, and cutting through a bottom supporting release film L1 material belt from the depth of the die cutting corresponding to the cutting edges of the hard film inner frame D301 and the hard film inner hole D302 to remove waste materials in the inner frame hole and a bottom supporting protective film material belt, and cutting to obtain a finished product.
In the production process, the minimum distance between the contour line of the pre-punched hole D201 and the contour line D101 of the inner frame is larger than 1mm. Preferably, the distance of the contour line of the pre-punched hole D201 from the contour line of the inner frame is 1-3mm.
In the process, the first die cutter die D1 and the second die cutter die D2 are also provided with die cutting sleeve position posts D107 and D204 corresponding to the die cutting positioning holes; referring to fig. 2-3 and fig. 3, the upper mold of the third die-cutting knife D3 has an inner frame blade R301 and an inner hole blade R302, a pressing plate D32 is mounted in the area outside the inner frame blade R301 and the inner hole blade R302, and the pressing plate D32 has a hollowed-out portion D320 for avoiding the blade; an elastic component D33 such as a spring is arranged between the pressing plate D32 and the knife template D31, the thickness of the pressing plate D32 is smaller than the heights of the inner frame knife edge R301 and the inner hole knife edge R302, so that the knife edge can protrude out of the pressing plate D32, and the knife template D31 is also provided with a sleeve needle D34 which penetrates through the pressing plate D32 and corresponds to a positioning hole on the material belt. The hard film material and the blade are more easily separated by the pressing plate D32 and the elastic part D33, so that the problem that the blade is embedded into the material and is difficult to separate is avoided.
The inner frame cutting edge R301 and the inner hole cutting edge R302 are outer straight inner oblique cutting edges, namely, the outer side faces of the cutting edges are perpendicular to the surface of the cutter template, and the included angle of the outer side faces of the cutting edges of the inner side faces of the cutting edges is 20-25 degrees, so that the cutting edges are smooth, and burrs are reduced.
By adopting the process, the pre-punched holes are punched in the irregular inner frame area before the inner frame is punched, so that the hollow structure is formed, and when the outer frame and the inner frame of the hard film are punched, the space inside the hard film can bear extrusion and tension, so that burrs can be avoided from being generated on punching edges, the contour cutting precision of the inner frame of a product is ensured, waste materials are separated more thoroughly, waste materials are discharged conveniently, the extrusion pressure of the cutting edge of the die in the horizontal direction can be reduced, and the damage of the cutting edge is avoided.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (6)
1. The utility model provides a cross cutting production technology suitable for irregular inside casing of hard film material, the hard film material has the irregular inside casing of several shape, its characterized in that: the die cutting production process comprises the following steps: before die cutting the inner frames of the formed hard film material, at least one pre-punched hole is punched in the corresponding area inside each inner frame.
2. The die-cutting production process suitable for irregular inner frames of hard film materials according to claim 1, wherein the die-cutting production process comprises the following steps of: the minimum distance of the contour line of the pre-punched hole from the contour line of the inner frame is larger than 1mm.
3. The die-cutting production process for irregular inner frames of hard film materials according to claim 1 or 2, wherein the die-cutting production process comprises the following steps of: the distance between the contour line of the pre-punched hole and the contour line of the inner frame is 1-3mm.
4. The die-cutting production process suitable for irregular inner frames of hard film materials according to claim 1, wherein the die-cutting production process comprises the following steps of: the die-cutting assembly comprises a hard film material, a double-sided adhesive layer and a release film layer, wherein the double-sided adhesive layer is attached to the lower surface of the hard film material, the hard film material is provided with a plurality of inner frames and inner holes with irregular shapes, the double-sided adhesive layer is provided with the inner frames and the inner holes corresponding to the positions and the shapes of the hard film material, and the production process comprises the following steps:
s1, carrying out first flat cutter die cutting on a composite material belt sequentially provided with a transition release film, a double faced adhesive tape and a support release film from top to bottom through a first die cutter die cutting, wherein the first flat cutter die cutting firstly forms an inner frame contour line, a pair of inner hole contour lines and a pair of die cutting positioning holes in the double faced adhesive tape on the composite material belt, and then forms an outer frame contour line of the double faced adhesive tape, a cutting line at the edge of the material belt and a first positioning mark line after a step distance; then removing the transition release film material belt, the waste outside the double-sided adhesive layer frame and the waste inside the frame; the formation is that from bottom to top in proper order: a support bottom release film material belt, a double-sided adhesive layer with an inner frame and a positioning hole;
s2, compounding a hard film material and a bottom support release film material belt on the double-sided adhesive layer in the step S1, carrying out second flat cutter die cutting through a second die cutter die cutting, respectively punching pre-punched holes in corresponding areas of an inner frame of the hard film material, forming a hard film material outer frame after two steps, and forming a second positioning mark line on the double-sided adhesive layer;
s3, carrying out third flat cutter die cutting on the composite material obtained in the step S2 through a third die cutter die, punching an inner frame and an inner hole on the hard film material, cutting the die cutting depth of the inner frame cutting edge and the inner hole cutting edge to the cutting through support bottom release film material belt, removing waste materials in the inner frame hole and support bottom protection film material belt, and cutting to obtain a finished product.
5. The die-cutting production process suitable for the irregular inner frame of the hard film material according to claim 4, which is characterized in that: the upper die of the third die-cutting knife die is provided with an inner frame cutting edge and an inner hole cutting edge, a pressing plate is arranged in an area outside the inner frame cutting edge and the inner hole cutting edge, an elastic component is arranged between the pressing plate and the knife template, the thickness of the pressing plate is smaller than the heights of the inner frame cutting edge and the inner hole cutting edge, so that the cutting edge can protrude out of the pressing plate, and the upper template is also provided with a sleeve needle penetrating through the pressing plate and corresponding to a positioning hole on the material belt.
6. The die-cutting production process suitable for the irregular inner frame of the hard film material according to claim 5, which is characterized in that: the inner frame blade and the inner hole blade are outer straight inner oblique blades, namely the outer side face of the blade is perpendicular to the surface of the blade template, and the included angle of the outer side face of the blade of the inner side face of the blade is 20-25 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410044089.5A CN117799001A (en) | 2024-01-11 | 2024-01-11 | Die cutting production process suitable for irregular inner frame of hard film material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410044089.5A CN117799001A (en) | 2024-01-11 | 2024-01-11 | Die cutting production process suitable for irregular inner frame of hard film material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117799001A true CN117799001A (en) | 2024-04-02 |
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ID=90427511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410044089.5A Pending CN117799001A (en) | 2024-01-11 | 2024-01-11 | Die cutting production process suitable for irregular inner frame of hard film material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117799001A (en) |
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2024
- 2024-01-11 CN CN202410044089.5A patent/CN117799001A/en active Pending
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