Preheating cutting device

Abstract

The present invention provides a preheating cutting device that can significantly reduce the generation of burrs and dust when cutting sheet material to be processed, is less prone to blade chipping, and makes it easier to control the straightness of the blade. [Solution] The work platform includes a base 11 and a storage space 10; at least one power source 2 attached to one side of the base; at least one cutting module 33 assembled inside the base, wherein the power source operates a first cutting member 331 and a second cutting member 332 which are aligned with the sheet material to be processed 6 on the bottom side of the base to perform cutting work; at least one laser preheating module 4 provided on the ceiling surface of the base and including a laser source and a laser beam; and at least one galvanometer mirror group 5 provided on the ceiling surface of the base and receiving the laser beam, wherein the laser spot 51 generated by the galvanometer mirror group irradiates a predetermined cutting location on the sheet material to be processed and heats it to a predetermined temperature, thereby softening the sheet material to be processed and reducing the generation of dust during cutting.

Description

Technical Field

[0001] The present invention relates to a preheating cutting device. In particular, by irradiating a predetermined cutting position of a sheet material to be processed using a laser preheating module and a galvanometer mirror group and heating it to a predetermined temperature, when cutting the sheet material to be processed heated until it softens with a cutting module, the generation of burrs and dust can be significantly reduced, and problems such as chipping easily occurring in a partial area of the blade and the problem of difficulty in controlling the straightness of the blade are improved. As a result, an almost perfect cutting device is configured.

Background Art

[0002] With the rapid development of current science and technology and information, various electronic products or devices in the market are constantly being refreshed. In addition, inside each electronic product or device, there is provided a printed circuit board (PCB) on which electronic components are mounted. An electronic circuit formed by welding electronic components with different functions or actions to the printed circuit board enables the electronic product or device to operate normally. As the circuit board is widely used, related process equipment manufacturers are conducting more active research and development.

[0003] General circuit boards can be classified into rigid and flexible boards based on their flexibility. They can also be classified into single-layer, double-layer, and multi-layer boards based on the number of layers. On the other hand, when classified by material, they include paper-based copper-clad laminates, composite boards, glass fiber cloth copper-clad laminates, soft or hard copper-clad laminates, ceramic boards, metal boards, thermoplastic boards, etc. In the circuit board manufacturing process, copper-clad laminates (CCLs) are an essential basic material. They are laminates made by laminating copper foil onto a semi-cured prepreg (also called a bonding sheet) obtained by impregnating insulating paper, glass fiber cloth, or other fibrous materials with resin, and then molding them under high temperature and pressure. However, before processing, the prepreg is wound into a continuous coil to form a strip. After processes such as slitting and sheet cutting, the cut prepregs are laminated, heated to a certain extent, and then pressed to cure, resulting in a board of the desired thickness. Then, one or both sides of the substrate are coated with copper, pressed, and hardened to form a copper-clad laminate.

[0004] However, in the current market, slitting and cutting devices capable of slitting and sheet-cutting prepreg to desired dimensions first feed the prepreg to upper and lower circular blades using a first group of pressure rollers to slit it to the desired width, and then feed it to upper and lower straight blades using a second group of pressure rollers to perform a straight, lateral sheet cut to the desired length. The slitting device slits the prepreg with upper and lower circular blades and then feeds it to upper and lower straight blades to perform a sheet cut. However, regardless of whether the prepreg is cut with the first group of pressure rollers or the second group of pressure rollers, the prepreg has a predetermined thickness, making it difficult for the group of circular blades or straight blades to cut, and leaving large burrs. On the other hand, when cutting hard prepreg made of polymer directly with circular or straight blades, a lot of dust is generated, and chipping is likely to occur in some areas of the upper and lower blades. In addition, it is difficult to control the straightness of the blades, so it is necessary to spend a very long time adjusting the straightness each time the blades are changed.

[0005] Therefore, in today's world, where those skilled in the art value unmanned production modes that are simple in mechanism, fast in operation, easy to maintain, and low in cost, a cutting device that is compact in structure, suitable for various manufacturing processes, reduces wasted time and cost, and thereby effectively improves production capacity, cutting quality, and yield can meet the needs of today's unmanned automated production. In other words, this is a key issue and problem that those skilled in the art have long desired to improve. [Overview of the project] [Problems that the invention aims to solve]

[0006] Therefore, in light of the above-mentioned problems and shortcomings, the inventor collected relevant data and conducted evaluations and studies from various angles, ultimately designing and creating this preheating cutting device.

[0007] This invention relates to a preheating cutting device that mainly includes a work platform including a base and a storage space, at least one power source attached to one side of the base, at least one cutting module assembled inside the base, the cutting module in which a first cutting member and a second cutting member are operated by the power source and aligned with the sheet material to be processed on the bottom side of the base to perform cutting work, at least one laser preheating module provided on the ceiling surface of the base and including a laser source and a laser beam, and at least one galvanometer mirror group provided on the ceiling surface of the base and receiving the laser beam, the galvanometer mirror group generates a laser spot which irradiates a predetermined cutting location on the sheet material to be processed and heats it to a predetermined temperature, thereby softening the sheet material to be processed and reducing the generation of dust during cutting.

[0008] According to the above, a laser preheating module and a group of galvanometer mirrors are used to irradiate a predetermined cutting area of ​​the sheet material to be processed and heat it to a specified temperature. This significantly reduces the generation of burrs and dust when the sheet material, which has been heated to a softened state, is cut by the cutting module. Furthermore, the problems of chipping in certain areas of the blade and the difficulty in controlling the straightness of the blade are improved, resulting in a nearly perfect cutting device.

[0009] A secondary object of the present invention is that the laser preheating module further includes a beam expander that receives the laser beam emitted from the laser source. The laser beam that has passed through the beam expander is redirected by a first reflective mirror and a second reflective mirror. A beam combiner is further provided between the first reflective mirror and the second reflective mirror to maintain the laser beam parallel. The laser beam is then output to the outside of the laser preheating module.

[0010] Another object of this invention is that the galvanometer mirror group further includes a third reflecting mirror that receives and redirects the laser beam output from the laser preheating module. The redirected laser beam enters the scanner. The laser spot also passes through a protective window and illuminates the predetermined cutting location of the pre-installed sheet material to be processed, located in front of the linear displacement, at an inclined scanning angle.

[0011] A further object of this invention is that the first cutting member is a circular blade, and the second cutting member is a straight blade or a circular blade. [Brief explanation of the drawing]

[0012] [Figure 1] Figure 1 is a side view of the preheating cutting device according to the present invention. [Figure 2] Figure 2 is a perspective view of the preheating cutting device according to the present invention. [Figure 3] Figure 3 is an exploded perspective view of the preheating and cutting device according to the present invention. [Figure 4] Figure 4 is a perspective view of the laser preheating module and galvanometer mirror group in the present invention. [Figure 5] Figure 5 is a schematic plan view of the laser preheating module and galvanometer mirror group in the present invention. [Figure 6] Figure 6 is a schematic plan view of the present invention when using two sets of laser preheating modules and galvanometer mirror groups. [Modes for carrying out the invention]

[0013] Refer to Figure 1, a side view of the preheating cutting device in this invention. As is clear from the drawing, the low-dust preheating cutting device of this invention mainly includes a work platform 1, a power source 2, a transmission module 3, a laser preheating module 4, and a galvanometer mirror group 5. The detailed structure and connection relationships of the above components are as follows.

[0014] The work platform 1 includes a base 11, and the base 11 is provided with a storage space 10 inside.

[0015] At least one power source 2 is attached to one side of the base 11.

[0016] Inside the base 11, there is further provided at least one transmission module 3 that is assembled to penetrate the ceiling side of the housing space 10 in the base 11. The transmission module 3 includes a screw 31 that is connected to and transmits power from the power source 2. The screw 31 is inserted into a lateral movement module 32 to move the lateral movement module 32 in the horizontal direction. A cutting module 33 is assembled to the bottom side of the lateral movement module 32. Furthermore, a table 7 having a carrying and lifting function is provided on the bottom side of the base 11.

[0017] At least one cutting module 33 is assembled inside the base 11, and the power source 2 operates a first cutting member 331 located above and a second cutting member 332 located below. Furthermore, the blades of the first cutting member 331 and the second cutting member 332 are offset from each other. The cutting module 33 is then aligned with the pre-installed sheet material 6 to be processed on the bottom side of the base 11 to perform the cutting operation.

[0018] At least one laser preheating module 4 is provided on the ceiling surface of the base 11. The laser preheating module 4 includes at least a laser source 41 and a laser beam emitted from the laser source 41.

[0019] The galvanometer mirror group 5 is provided at least once on the ceiling surface of the base 11 and receives the laser beam. The laser spot 51 generated by the galvanometer mirror group 5 irradiates a predetermined cutting location on the pre-installed sheet material 6 to be processed, heating it to a predetermined temperature. This softens the pre-installed sheet material 6 to be processed, reducing the generation of dust during cutting. The predetermined temperature is approximately 85°C, but is not limited to this.

[0020] The power source 2 described above is a servo motor, but naturally, those skilled in the art may use an air cylinder or a hydraulic cylinder as a power source and combine it with a suitable transmission system to form a mechanism that precisely controls the transmission or other linear movement of the screw 31. Simple modifications of this kind are also within the scope of the protection of the present invention.

[0021] Refer to FIGS. 2, 3, 4, and 5, which respectively show a perspective view and an exploded perspective view of the preheating cutting device, and a perspective view and a schematic plan view of the laser preheating module and the galvanometer mirror group. The laser preheating module 4 is provided on the fixed frame 4a. Moreover, the laser preheating module 4 has a bottom plate 4b for mounting each member. The laser preheating module 4 mounted on the bottom plate 4b further includes a beam expander 42 that receives the laser beam emitted from the laser source 41. The laser beam passing through the beam expander 42 is deflected in direction by the first reflection mirror 43 and the second reflection mirror 45. Further, a beam combiner 44 is provided between the first reflection mirror 43 and the second reflection mirror 45 to maintain the laser beam parallel. Also, a power supply device 46 for supplying power to the laser preheating module 4 and the galvanometer mirror group 5 is provided on the bottom plate 4b. Moreover, the laser beam is output outside the laser preheating module 4. A dust cover 4c is provided outside the first reflection mirror 43, the beam combiner 44, and the second reflection mirror 45 described above. Also, an intake hood 4d that covers the outside of the laser preheating module 4 and the galvanometer mirror group 5 is provided on the bottom plate 4b.

[0022] FIG. 5 discloses a case where the number of the galvanometer mirror group 5 is only one, and one galvanometer mirror group 5 is used for scanning and preheating the sheet material 6 to be processed, and linear cutting is performed over the entire length of the path. The galvanometer mirror group 5 further includes a third reflection mirror 52 that receives the laser beam output from the laser preheating module 4 and deflects its direction, and the deflected laser beam enters the scanner 53. Also, the laser spot 51 passes through the protection window 54 and irradiates the predetermined cutting position of the sheet material 6 to be processed installed in advance in front of the linear displacement at a linear inclined scanning angle. Thereby, the sheet material 6 to be processed installed in advance is softened, contributing to the reduction of dust generation during cutting. Compared with the conventional single-point laser heating method, in this embodiment, by changing the heating method to a segmented high-speed scanning by the galvanometer mirror group 5, the following advantages are achieved.

[0023] 1. By adjusting the length of the scanning line, the cutting target area to be heated can be extended forward. Also, since a part is repeatedly scanned, the temperature of the material can be maintained at a high and relatively uniform temperature.

[0024] 2. After changing the cutting speed, it is only necessary to adjust the power to maintain the cutting quality.

[0025] 3. At the start and end points of the material cutting path, the material will not be overheated and discolored / burned due to the speed reduction of the round blade (unlike the one-point type, high-speed scanning is always maintained).

[0026] The first cutting member 331 of the cutting module 33 described above is a round blade, and the second cutting member 332 is a straight blade or a round blade, but it is not particularly limited in the present invention.

[0027] FIG. 1 and FIG. 6 disclose the case where the present invention simultaneously scans and preheats the processing target sheet material 6 using two galvanometer mirror groups 5. At least two galvanometer mirror groups 5 can effectively shorten the cutting process by laser scanning the entire area of the processing target sheet material 6 with a linear laser spot 51.

[0028] Furthermore, as shown in Figures 1 and 6, the preferred operating mode of the preheating cutting device in this invention is as follows. First, the sheet material to be processed 6 (e.g., prepreg) is placed on the bottom side of the base 11 and positioned, and then the power source 2, which consists of a servo motor, is activated. The power source 2 rotates the screw 31, which allows the lateral movement module 32 to move horizontally. Also, two galvanometer mirror groups 5 located on the ceiling side of the base 11 receive the laser beam output from the laser preheating module 4 and direct it into the scanner 53. The laser spot 51 then passes through the protective window 54 and irradiates a predetermined cutting location of the sheet material to be processed 6 in front of the linear displacement at a linear inclined scanning angle, heating it to a predetermined temperature (e.g., 85°C) and softening the sheet material to be processed 6. This allows for the linear movement of the upper first cutting member 331 and the lower second cutting member 332 in the cutting module 33 to cut a pre-installed sheet material 6 to be processed, thereby effectively reducing dust generation and extending the service life of the first and second cutting members (331, 332).

[0029] The main technical features of the preheating cutting device of this invention are as follows: Using the laser preheating module 4 and the galvanometer mirror group 5, predetermined cutting locations on the sheet material to be processed 6 are irradiated and heated to a predetermined temperature. As a result, when the sheet material to be processed 6, which has been heated until softened, is cut by the cutting module 33, the generation of burrs and dust can be greatly reduced. Furthermore, the problems of chipping easily occurring in a part of the blade and the difficulty in controlling the straightness of the blade are improved, resulting in a nearly perfect cutting device.

[0030] The above are merely preferred embodiments of the present invention, and the scope of the claims is not limited thereto. Therefore, any simple additions and equivalent structural modifications made by applying the contents of the specification and drawings of the present invention are all similarly included within the scope of the claims of the present invention.

[0031] In summary, the cutting device described above in this invention can reliably achieve its intended effect and purpose when in use. Therefore, this invention is a highly practical invention and meets the requirements for filing a utility model application; as such, we are filing an application in accordance with the law. We earnestly request the prompt approval of this application so that the inventor's creative efforts may be guaranteed. Furthermore, if your examiner has any doubts, please provide written instructions, and the inventor will respond in good faith. [Explanation of Symbols]

[0032] 1. Work Platform 10 Containment space 11 Bass 2 Power source 3 Transmission Modules 31 Screw 32 Lateral movement module 33 Cutting Modules 331 First cutting member 332 Second cutting member 4. Laser preheating module 41 Laser source 42 Beam Expander 43. First Reflecting Mirror 44 Beam Combiner 45. Second Reflecting Mirror 46 Power supply device 4a Fixed frame 4b Bottom plate 4c dust cover 4D Intake Hood 5 Galvano Mirror Group 51 Laser Spots 52 Third Reflecting Mirror 53 Scanners 54 Protective Window 6. Sheet material to be processed 7 tables

Claims

1. A work platform including a base and having a storage space inside the base, At least one power source attached to one side of the base, A cutting module assembled inside the base, wherein the power source operates a first cutting member located above and a second cutting member located below, and the blades of the first cutting member and the second cutting member are offset from each other, and the cutting module is aligned with a pre-installed sheet material to be processed on the bottom side of the base to perform cutting work. The base is provided on the ceiling surface and includes at least one laser preheating module which includes a laser source and a laser beam emitted from the laser source, A group of at least one galvanometer mirrors provided on the ceiling surface of the base to receive the laser beam, wherein the laser spot generated by the galvanometer mirror group irradiates a predetermined cutting location on the pre-installed sheet material to be processed and heats it to a predetermined temperature, thereby softening the pre-installed sheet material to be processed and reducing the generation of dust during cutting, A preheating and cutting device that includes a preheating and cutting device.

2. The laser preheating module further includes a beam expander that receives a laser beam emitted from the laser source, the laser beam that has passed through the beam expander is redirected by a first reflecting mirror and a second reflecting mirror, a beam combiner is provided between the first reflecting mirror and the second reflecting mirror to maintain the laser beam parallel, and the laser beam is output to the outside of the laser preheating module, as described in claim 1.

3. The galvanometer mirror group further includes a third reflecting mirror that receives and redirects a laser beam output from the laser preheating module, the redirected laser beam enters the scanner, and the laser spot passes through a protective window and irradiates the predetermined cutting location of the pre-installed sheet material to be processed, located in front of the linear displacement, at a linear inclined scanning angle, according to claim 1.

4. The preheating cutting device according to claim 1, wherein the first cutting member is a circular blade and the second cutting member is a straight blade or a circular blade.

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