CN110049629B - Masking tape cutting method based on separated tool - Google Patents
Masking tape cutting method based on separated tool Download PDFInfo
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- CN110049629B CN110049629B CN201910234324.4A CN201910234324A CN110049629B CN 110049629 B CN110049629 B CN 110049629B CN 201910234324 A CN201910234324 A CN 201910234324A CN 110049629 B CN110049629 B CN 110049629B
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- 230000000873 masking effect Effects 0.000 title claims abstract description 96
- 238000005520 cutting process Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000001788 irregular Effects 0.000 claims abstract description 25
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 abstract description 15
- 238000002474 experimental method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 101710137710 Thioesterase 1/protease 1/lysophospholipase L1 Proteins 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
- H05K3/281—Applying non-metallic protective coatings by means of a preformed insulating foil
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Studio Devices (AREA)
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Abstract
The invention discloses a masking tape cutting method based on a separate tool, belonging to the technical field of masking tape cutting, wherein the irregular edge of the separate tool is smoothed, and a smooth circular arc with the radius of 5mm is formed on the irregular edge of the separate tool. According to the invention, the masking tape is cut based on the separated tool, and the problem of discontinuity of step type saw teeth or embedding of round corners in the separation process is solved by forming the irregular edge of the separated tool into a smooth circular arc with the radius of 5mm, so that the masking tape is conveniently cut to improve the cutting efficiency.
Description
Technical Field
The invention belongs to the technical field of masking tape cutting, and particularly relates to a masking tape cutting method based on a separated tool.
Background
The PCB mounting panel need carry out three proofings after the assembly test is accomplished and is handled, and three proofings are handled and are generally adopted the spraying mode to handle. The position of a part which does not need three prevention in the printed board needs to be masked and protected, the masking before three prevention treatment in the industry generally adopts a TESA masking tape for masking, the masking tape is generally regular in length (3 mm-60mm in width and unequal), but the masking of an irregular printed board needs to be customized independently. If the purchase batch does not reach a certain scale, a masking tape manufacturer is difficult to produce independently, for products with a certain batch, the manufacturer can only trim the masking tape in a manual mode, a large amount of manpower and time are needed in the process, and due to the fact that the proficiency of workers is different, the trimmed masking tape also has certain difference, and the problem that the subsequent masking effect is not good is directly caused.
The masking tape belongs to the adhesive tape class, if the existing specification is directly purchased and automatic burning is carried out by outsourcing, the edge of the adhesive tape can not form a neat outline and can not be used. If the masking tape is not adopted and the metal parting strips are adopted for masking, the parting strips are made of metal materials, so that the PCB mounting plate has strong adhesive force after three proofings, the parting strips cannot be taken down, and the PCB mounting plate is damaged. Because the gum on the bottom surface of the masked back of the masking tape has better adhesion with the adhesive tape and is not easy to leave colloid, a new material for replacing the masking tape is not found up to now. Therefore, a quick and effective method for quickly masking the masking part of the irregular mounting plate is to be found.
Disclosure of Invention
The invention aims to provide a masking tape cutting method based on a separate tool, which is characterized in that the masking tape is cut based on the separate tool, and a smooth circular arc with the radius of 5mm is formed on the irregular edge of the separate tool, so that the problem of discontinuity of step-type saw teeth or embedded circular angles in the separation process is solved, and the masking tape is conveniently cut to improve the cutting efficiency.
The invention is mainly realized by the following technical scheme: a masking strip cutting method based on a separate tool is characterized in that irregular edges of the separate tool are smooth, and smooth arcs with the radius of 5mm are formed on the irregular edges of the separate tool.
In the process of tool separation design, a PCB real object has a stepped sawtooth irregular shape, the shape has the problems of discontinuity or fillet embedding and the like, the masking tape is difficult to cut during manual cutting, and the irregular edge needs to form a smooth chamfer angle figure; the masking tape is cut after the irregular edge of the separate tool is smoothed, and the irregular edge of the separate tool forms a smooth circular arc with the radius of 5mm, so that on one hand, manual cutting feed is facilitated, and the cutting efficiency of the masking tape is improved; on the other hand, the masking effect of the masking tape cut by the separate tool on the PCB mounting plate can be ensured.
In order to better realize the invention, further, when the length of the edge is more than 5mm, chamfering is carried out by adopting the chamfering radius of 5 mm; when the length of the edge is less than 5mm, the edge length is compensated to 5mm, and then chamfering is performed with a chamfering radius of 5 mm. The invention can process the separate type tools with different edge lengths, ensures the smoothness of manual cutting by chamfering the separate type tools smoothly and realizes the reduction of the loss of the area of the separate type tools; the cutting speed is improved, the working efficiency is improved, the masking effect of the masking tape on the PCB mounting plate can reach the index by reducing the loss of the area of the separated tool, and the normal cutting level can be reached. The invention improves the working efficiency, reduces the loss in the cutting process, saves the labor cost and has better practicability.
In order to better realize the invention, the edge of the separated tool which is larger than 5mm is chamfered, and then the edge of the separated tool which is smaller than 5mm is processed.
Firstly, chamfering the edge of the separated tool with the thickness larger than 5mm for the first time, then compensating the edge of the separated tool with the thickness smaller than 5mm to 5mm, and then chamfering for the second time; according to the invention, the irregular edge of the separate tool is chamfered, so that the irregular edge of the separate tool is processed into a smooth and continuous arc with the edge radius of 5mm, and the moving position of a cutter is convenient when the masking tape is cut; the invention ensures the smoothness of manual cutting and reduces the area loss of the separated tool through the edge smoothness. The area loss of the edge of the separated tool after chamfering with the radius of 5mm is within 1 percent and the coincidence rate of the areas is more than 99 percent, which are obtained by calculation and statistics of a large amount of data; the shape overlap ratio of the separated tool after chamfering and before chamfering can be ensured to be more than 95 percent, so that the masking index of the PCB mounting plate can be met.
In order to better realize the invention, further, a separate tool is manufactured according to the prepared separate tool masking pattern, then a masking tape is cut according to the separate tool, and then the PCB is masked by the masking tape.
According to the invention, the drawing of the separated tool is drawn firstly, the edge of the separated tool in the drawing is chamfered, and the separated tool is manufactured according to the chamfered drawing. According to the invention, the drawing of the separated tool is drawn firstly, so that the separated tool is more convenient to manufacture, the masking tape is placed on the separated tool for manual cutting, the time required for cutting the original integrated tool to stick the masking tape of the PCB mounting plate is shortened to 1-2 hours from 3-5 hours, the problem of high difficulty in integrated cutting is solved, and the cutting efficiency of the masking tape is improved; meanwhile, the edge of the separated tool is smooth and continuous, so that the error of the masking tape cut by the separated tool is smaller, and the masking effect of the masking tape cut by the integrated tool is improved by more than 50 percent; the effectiveness of three proofings of the PCB mounting plate is ensured, and the practicability is better.
In order to better realize the method, the separated tool is further prepared by adopting an aluminum plate with the thickness of 1mm-1.5mm, and the surface of the separated tool is subjected to conductive oxidation treatment. The thickness of the separated tool is set to be 1mm-1.5mm, the separated tool is made of an aluminum plate, the weight of the separated tool is light, and the separated tool can be used for a long time; the surface of the separated tool is subjected to conductive oxidation treatment, so that the separated tool is prevented from being corroded, the service time of the separated tool is prolonged, and the replacement cost of the separated tool is reduced.
In order to better implement the invention, a scalpel is further adopted to cut the masking tape. According to the invention, the masking tape is pasted on the separated tool and cut by the scalpel, the smooth circular arc surface of the separated tool is convenient for the scalpel to feed, and the cutting speed of the masking tape on the separated tool is improved.
The invention has the beneficial effects that:
(1) in the process of tool separation design, a PCB real object has a step-type sawtooth irregular shape, the shape has the problems of discontinuity or fillet embedding and the like, the masking tape is difficult to cut during manual cutting, and the irregular edge needs to form a smooth chamfer angle figure. According to the invention, the irregular edge of the separate tool forms a smooth arc with the radius of 5mm, so that on one hand, the feeding for manual cutting is more convenient, and the cutting efficiency of the masking tape is improved; and on the other hand, the masking effect of the masking tape cut by the separate tool on the PCB mounting plate is ensured.
(2) The invention can process the separated tools with different edge lengths, ensures the smoothness of manual cutting through the chamfer smoothness of the separated tools, reduces the loss of the area of the separated tools, and improves the cutting speed, thereby improving the working efficiency. The invention reduces the loss of the area of the separated tool to enable the masking effect of the masking tape on the PCB mounting plate to reach the index, so as to reach the normal cutting level. The invention improves the working efficiency, reduces the loss in the cutting process, saves the labor cost and has better practicability.
(3) According to the method, the drawing of the separated tool is drawn firstly, the edge of the separated tool in the drawing is chamfered, and the separated tool is manufactured according to the chamfered drawing, so that the separated tool is more convenient to manufacture, the masking tape is placed on the separated tool for manual cutting, the time required for cutting the original integrated tool and pasting the masking tape of the PCB mounting plate is shortened to 1-2 hours from 3-5 hours, the problem of high difficulty in integral cutting is solved, and the cutting efficiency of the masking tape is improved; meanwhile, the edge of the separated tool is smooth and continuous, so that the error of the masking tape cut by the separated tool is smaller, and the masking effect of the masking tape cut by the integrated tool is improved by more than 50 percent; the effectiveness of three proofings of the PCB mounting plate is ensured, and the practicability is better.
Drawings
FIG. 1 is a schematic diagram of a chamfer with a length of the edge of the split tooling greater than 5 mm;
FIG. 2 is a schematic diagram of a chamfer with an edge length of the split tooling less than 5 mm;
FIG. 3 is a schematic diagram showing a comparison of the areas of the separate tools;
FIG. 4 is a schematic diagram illustrating the comparison of the contact ratio of the separated tooling shapes;
FIG. 5 is a flow chart of the present invention;
fig. 6 is a schematic structural view before chamfering of the separated tool.
Detailed Description
Example 1:
a masking strip cutting method based on a separate tool is disclosed, as shown in figures 1 and 2, irregular edges of the separate tool are smoothed, and smooth arcs with the radius of 5mm are formed on the irregular edges of the separate tool.
In the process of tool separation design, a PCB real object has a stepped sawtooth irregular shape, the shape has the problems of discontinuity or fillet embedding and the like, the masking tape is difficult to cut during manual cutting, and the irregular edge needs to form a smooth chamfer angle figure; the masking tape is cut after the irregular edge of the separate tool is smoothed, and the irregular edge of the separate tool forms a smooth circular arc with the radius of 5mm, so that on one hand, manual cutting feed is facilitated, and the cutting efficiency of the masking tape is improved; on the other hand, the masking effect of the masking tape cut by the separate tool on the PCB mounting plate can be ensured.
Example 2:
the embodiment is further optimized on the basis of the embodiment 1, and as shown in fig. 1, when the length of the edge is more than 5mm, the chamfer radius is 5mm for chamfering; as shown in fig. 2, when the length of the edge is less than 5mm, the edge length is compensated to 5mm and then chamfered with a chamfer radius of 5 mm.
The invention can process the separate type tools with different edge lengths, ensures the smoothness of manual cutting by chamfering the separate type tools smoothly and realizes the reduction of the loss of the area of the separate type tools; the cutting speed is improved, the working efficiency is improved, the masking effect of the masking tape on the PCB mounting plate can reach the index by reducing the loss of the area of the separated tool, and the normal cutting level can be reached. The invention improves the working efficiency, reduces the loss in the cutting process, saves the labor cost and has better practicability.
Other parts of this embodiment are the same as embodiment 1, and thus are not described again.
Example 3:
a masking strip cutting method based on a separated tool comprises the following steps as shown in figure 5:
step 1: drawing a drawing of the separated tool;
(1) drawing a drawing of the separated tool according to the masking part of the PCB mounting plate;
(2) chamfering the edge of the separated tool in the drawing: as shown in fig. 1, firstly, performing a first chamfering with a radius of 5mm on an edge of the separated tool with a radius of more than 5mm in a drawing, so that an arc with a radius of 5mm is formed on the edge of the separated tool with a radius of more than 5 mm; as shown in fig. 2, then compensating the edge of the separated tool in the drawing paper, which is smaller than 5mm, to 5 mm; and finally, performing secondary chamfering with the radius of 5mm on the edge compensated by the separated tool in the drawing paper.
Step 2: preparing a separated tool;
(1) selecting an aluminum plate with the thickness of 1mm-1.5mm as a preparation material of the separated tool;
(2) preparing a separate tool according to a drawing of the separate tool;
(3) and conducting oxidation treatment on the surface of the prepared separated tool.
And step 3: cutting and pasting the masking tape:
(1) the masking tape is attached to the separated tool and cut by the scalpel, so that the masking tape is cut;
(2) and sticking the cut masking tape on the masking part of the PCB mounting plate.
As shown in fig. 3 and 4, comparative experiments were set up:
cutting the masking tape by using a blank experiment group, as shown in FIG. 6, and using a separated tool which is not subjected to chamfering treatment as in the steps 2 and 3;
and step 2, just chamfering the edge of the separated tool in the step 1 into an arc with the radius of 8mm in the same way as the step 1-3.
As shown in table 1, if the area of the separation tool without chamfering in the comparative experiment (i) is 165.9mm, the area overlapping rate is 100%; the area of the separation frock of preparation after processing in contrast experiment 2 is 155.4mm, and is 93.67% with the area coincidence rate of the separation frock before the chamfer. While the area of the separation tool prepared after processing in the embodiment is 165.6mm, and the area coincidence rate with the area of the separation tool before chamfering is 99.82%. After comparison, the tooling area loss of the embodiment is smaller, the area loss of the split tooling is within 1%, and the overlapping rate of the areas is more than 99% relative to the setting of the chamfer radius of 8 mm. As shown in fig. 4, the shape coincidence degree of the separation tool prepared after the treatment in the second experiment is worst, and meanwhile, the statistical result shows that the shape coincidence degree of the separation tool in the embodiment after chamfering and before chamfering can be ensured to be more than 95%, and compared with the separation tool with the chamfer radius of 8mm, the shape coincidence degree of the separation tool is higher, and the masking effect of the cut masking tape on the PCB mounting plate can be ensured. The invention also ensures the consistency index before and after the separation work on the basis of solving the problem of difficult cutting of the masking tape, thereby ensuring the masking effect of the masking tape.
According to the invention, the drawing of the separated tool is drawn firstly, the edge of the separated tool in the drawing is chamfered, and the separated tool is manufactured according to the chamfered drawing. According to the invention, the drawing of the separated tool is drawn firstly, so that the separated tool is more convenient to manufacture, the masking tape is placed on the separated tool for manual cutting, the time required for cutting the original integrated tool to stick the masking tape of the PCB mounting plate is shortened to 1-2 hours from 3-5 hours, the problem of high difficulty in integrated cutting is solved, and the cutting efficiency of the masking tape is improved; meanwhile, the edge of the separated tool is smooth and continuous, so that the error of the masking tape cut by the separated tool is smaller, and the masking effect of the masking tape cut by the integrated tool is improved by more than 50 percent; the effectiveness of three proofings of the PCB mounting plate is ensured, and the practicability is better.
The thickness of the separated tool is set to be 1mm-1.5mm, and the separated tool is made of an aluminum plate, so that the separated tool is light in weight and can be used for a long time; the surface of the separated tool is subjected to conductive oxidation treatment, so that the separated tool is prevented from being corroded, the service time of the separated tool is prolonged, and the replacement cost of the separated tool is reduced.
TABLE 1
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (4)
1. A masking strip cutting method based on a separate tool is characterized in that an irregular edge of the separate tool is smoothed, and a smooth circular arc with the radius of 5mm is formed at the irregular edge of the separate tool;
when the length of the edge is more than 5mm, chamfering with the chamfering radius of 5 mm; when the length of the edge is less than 5mm, the length of the edge is compensated to 5mm, and then chamfering is carried out by adopting a chamfering radius of 5 mm;
firstly, chamfering the edge of the separated tool which is larger than 5mm, and then processing the edge of the separated tool which is smaller than 5 mm.
2. The method for cutting the masking tape based on the separated tool according to claim 1, wherein the separated tool is manufactured according to the prepared masking image of the separated tool, then the masking tape is cut according to the separated tool, and then the PCB is masked by the masking tape.
3. The masking strip cutting method based on the separated tool according to claim 2, wherein the separated tool is made of an aluminum plate with the thickness of 1mm-1.5mm, and the surface of the separated tool is subjected to conductive oxidation treatment.
4. The masking tape cutting method based on the separated tool according to claim 2, characterized in that a scalpel is used for cutting the masking tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910234324.4A CN110049629B (en) | 2019-03-26 | 2019-03-26 | Masking tape cutting method based on separated tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910234324.4A CN110049629B (en) | 2019-03-26 | 2019-03-26 | Masking tape cutting method based on separated tool |
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| Publication Number | Publication Date |
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| CN110049629A CN110049629A (en) | 2019-07-23 |
| CN110049629B true CN110049629B (en) | 2022-04-19 |
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| CN201910234324.4A Active CN110049629B (en) | 2019-03-26 | 2019-03-26 | Masking tape cutting method based on separated tool |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5628866A (en) * | 1993-12-29 | 1997-05-13 | 3M | Masking machine |
| CN102184295A (en) * | 2011-05-12 | 2011-09-14 | 贰陆光学（苏州）有限公司 | Method and system for optimizing irregular material clipping layout |
| CN206443272U (en) * | 2016-11-02 | 2017-08-29 | 湖南国盛服饰有限公司 | A kind of clothes epaulet cutting mould |
| CN108501078A (en) * | 2018-03-08 | 2018-09-07 | 广汽本田汽车有限公司 | Film cutting tool for automobile cover film |
| CN109583070A (en) * | 2018-11-23 | 2019-04-05 | 拓卡奔马机电科技有限公司 | A kind of method and system, computer readable storage medium, terminal optimizing trimmed curve quality |
-
2019
- 2019-03-26 CN CN201910234324.4A patent/CN110049629B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5628866A (en) * | 1993-12-29 | 1997-05-13 | 3M | Masking machine |
| CN102184295A (en) * | 2011-05-12 | 2011-09-14 | 贰陆光学（苏州）有限公司 | Method and system for optimizing irregular material clipping layout |
| CN206443272U (en) * | 2016-11-02 | 2017-08-29 | 湖南国盛服饰有限公司 | A kind of clothes epaulet cutting mould |
| CN108501078A (en) * | 2018-03-08 | 2018-09-07 | 广汽本田汽车有限公司 | Film cutting tool for automobile cover film |
| CN109583070A (en) * | 2018-11-23 | 2019-04-05 | 拓卡奔马机电科技有限公司 | A kind of method and system, computer readable storage medium, terminal optimizing trimmed curve quality |
Non-Patent Citations (1)
| Title |
|---|
| 浅谈手工裁剪和自动裁剪的使用要点;叶甘露;《装备制造技术》;20110215(第2期);第178-179页 * |
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