CN115889866A - PCB processing method applied to LED strip lamp - Google Patents

Abstract

The application relates to a PCB processing method applied to an LED strip lamp, which comprises the following steps: s1: connecting two ends of a plurality of strip-shaped PCBs to the two spliced PCBs respectively to form a processed PCB, wherein a milling groove for a milling cutter to pass through is formed between every two adjacent strip-shaped PCBs; s2: fixing the processed PCB on a station through two spliced PCBs; s3: processing the inner wall of the cut milling groove in the length direction by a milling cutter; s4: and performing V-CUT processing on the joint of the strip-shaped PCB and the makeup PCB by using a milling cutter. This application has the effect that the flange limit that makes rectangular form PCB board can be smooth straight.

Description

PCB processing method applied to LED strip lamp

Technical Field

The application relates to the technical field of PCB (printed circuit board) processing and forming, in particular to a PCB processing method applied to an LED strip lamp.

Background

With the popularization of environmental protection and energy conservation, energy-saving LED lamps are developed in all directions, various LED lamps comprehensively replace the traditional lamps, and PCBs (printed Circuit boards) are used as important components of the LED lamps, so that the PCB shapes of various shapes appear, and a plurality of long-strip-shaped traditional lamps are also replaced by the LED lamps.

In the related technology, the processing method of the strip-shaped PCB comprises the steps of firstly, carrying out V-CUT assembly on the PCB in a sequential splicing manner, then, carrying out processing treatment on the whole PCB, then, carrying out V-CUT treatment on a preset position between two adjacent strip-shaped PCBs, and finally, carrying out board splitting operation on the whole PCB in a snapping manner, thereby manufacturing a plurality of strip-shaped PCBs meeting the requirement of the LED lamp.

In view of the above-mentioned related technologies, there is a defect that, because V-CUT processing is performed between two adjacent strip-shaped PCBs, after subsequent board splitting operations are performed, burrs are present at edges of the strip-shaped PCBs, thereby making assembly of the strip-shaped lamp inconvenient.

Disclosure of Invention

In order to enable the plate edges of the strip-shaped PCB to be smooth and straight, the application provides a PCB processing method applied to an LED strip lamp.

The application provides a PCB processing method applied to an LED strip lamp, which adopts the following technical scheme:

a PCB processing method applied to an LED strip lamp comprises the following steps:

s1: connecting two ends of a plurality of strip-shaped PCBs to the two spliced PCBs respectively to form a processed PCB, wherein a milling groove for a milling cutter to pass through is formed between every two adjacent strip-shaped PCBs;

s2: fixing the processed PCB on a station through the two spliced PCBs;

s3: processing the inner wall of the cut milling groove in the length direction by a milling cutter;

s4: and performing V-CUT processing on the joint of the strip-shaped PCB and the makeup PCB by using a milling cutter.

Through adopting above-mentioned technical scheme, compare in a plurality of rectangular form PCB boards in the same direction as piecing together and do V-CUT makeup, still need carry out the mode of additionally handling to every rectangular form PCB board length direction's flange after the minute board, this kind of design, can fix whole processing PCB board on the station through two makeup PCB boards, treat that rectangular form PCB board is gone up to accomplish after electronic machining, CUT the milling cutter and mill the processing through milling cutter to the inner wall of CUT groove on length direction, then carry out V-CUT processing through milling cutter to rectangular form PCB board and the junction of makeup PCB board, so follow-up when dividing the board to handle, only need break off with the fingers and thumb the junction between makeup PCB board and the rectangular form PCB board can to can accomplish the processing of rectangular form PCB board in batches and with high accuracy.

Preferably, the S3 further comprises the following steps:

s31: carrying out sectional cutting and milling on the inner wall of the cut milling groove in the length direction through a milling cutter;

s32: the part of the half-cut milling groove which is remained during the subsection milling is milled away by the milling cutter.

Through adopting above-mentioned technical scheme, because of PCB is that the fibre material makes, and when milling cutter removed along the length direction who cuts the milling flutes, can accumulate stress on the PCB, so compare in the mode of surely milling through the milling cutter to the ascending inner wall of the milling flutes length direction in succession, this kind of design, can adjust the stroke of surely milling every section according to rectangular form PCB plate size, the work that the effort that then milling cutter applyed produced is difficult for making rectangular form PCB plate take place to shrink deformation along the width direction of self, thereby can make rectangular form PCB plate edge on length direction more level and more smooth.

Preferably, in S31, along the position from one end of the cut-and-milled slot close to the imposition PCB to the middle of the cut-and-milled slot in the length direction, the processing stroke and the feeding speed between different sections of the milling cutter or the feeding speed in each section of the milling cutter decrease in a linear relationship in a parabolic manner with an upward opening.

By adopting the technical scheme, because the PCB is processed and fixed on the station through the two spliced PCBs, the part of the long-strip-shaped PCB, which is closer to the middle position in the length direction, is easier to deform, so that in the design mode, on one hand, the processing parameters of the milling cutter can be adaptively changed according to the position of the milling cutter on the long-strip-shaped PCB, and the flatness of the edge of the long-strip-shaped PCB can be better kept; on the other hand, in the process that the milling cutter moves to the middle position of the long-strip-shaped PCB from one end close to the makeup PCB, the working parameters of the milling cutter are not linearly reduced, the processing precision of the long-strip-shaped PCB can be kept, and meanwhile, the processing efficiency of the long-strip-shaped PCB is improved, so that the processing method is more suitable for large-batch production.

Preferably, in S31, the positions of two adjacent milling operations are respectively close to two ends of the milling groove in the length direction, and are used for waiting for the disappearance of the stress at the previous milling operation position.

Through adopting above-mentioned technical scheme, because of every section surely mills the back of finishing, the position that rectangular form PCB board was processed still can have stress, compare in the mode that carries out next section at rectangular form PCB board with the end and surely mill next section after that, this kind of design can be apart from last position far away of surely milling, carries out next section to rectangular form PCB board and surely mills work to the stress that waits for the last position of surely milling disappears, thereby can make the flange of rectangular form PCB board more level and more smooth.

Preferably, in S31, when the cutting and milling operation is performed, a pulling force towards the position of the milling cutter is applied to a portion, close to the position of the cutting and milling, of the strip-shaped PCB, so as to balance the shrinkage deformation of the strip-shaped PCB, and meanwhile, a pressure is applied to the portion, close to the position of the cutting and milling, of the strip-shaped PCB, so as to enable the strip-shaped PCB to be attached to the station.

By adopting the technical scheme, on one hand, the acting force applied to the strip-shaped PCB in the cutting and milling process can be balanced in a mode of applying pulling force while cutting and milling, so that the unevenness of the plate edge of the strip-shaped PCB is not easy to occur, and meanwhile, the design mode can also improve the cutting and milling stroke and the feeding speed of each section to a certain extent so as to further improve the efficiency of processing the PCB in large batch under special conditions; on the other hand, when the cutting and milling are carried out and pressure is applied, the strip-shaped PCB is not easy to bend and deform up and down in the cutting and milling process, and therefore the integral flatness of the strip-shaped PCB can be improved.

Preferably, in S31, when the next position of the strip PCB is subjected to the cutting and milling, the force applied to the strip PCB at the previous position is still maintained for a predetermined time.

By adopting the technical scheme, after the cutting and milling are finished, the processed position of the strip-shaped PCB still has stress within a certain time, so the applied acting force still keeps the mode of the preset time, the residual stress at the position on the strip-shaped PCB can be continuously balanced, and the integral flatness and the plate edge flatness of the strip-shaped PCB can be simultaneously improved.

Preferably, the width dimension of the strip-shaped PCB is between 8 and 20mm, and in S31, the stroke and the feeding speed of each section of the milling cutter are inversely related to the width dimension of the strip-shaped PCB.

By adopting the technical scheme, on one hand, the width dimension of the strip-shaped PCB is 8-20mm, so that the processing method can improve the processing precision of the PCB and keep the whole processing cost not to be too high easily; on the other hand, since the direction of the force applied by the milling cutter is the width direction of the strip-shaped PCB, the stroke and feed speed of each segment of the milling cutter are reduced correspondingly when the width of the strip-shaped PCB is larger, so that the processing method can be changed adaptively according to the size of the strip-shaped PCB.

Preferably, in the step S2, a pad plate for placing a processed PCB is disposed on the station; in S3, the milling cutter can contact the shim plate.

Through adopting above-mentioned technical scheme, compare in needs turn-over, just can reach the mode of handling another flange limit of rectangular form PCB board, this kind of design, because be provided with the backing plate, so milling cutter can directly bore the processing that realizes whole milling flutes in the backing plate to can make PCB processing method more succinct.

Preferably, in S3, when the milling cutter works, the chips generated by the milling cutter are simultaneously sucked away.

Through adopting above-mentioned technical scheme, compare and surely mill the in-process and can't suck away clastic mode, this kind of design can reduce surely mill the produced piece of in-process, to the interference of the roughness of rectangular form PCB board limit to can further promote the board limit roughness of rectangular form PCB board, further can make the equipment of rectangular form lamps and lanterns convenient more.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by means of sequential splicing and the arrangement of the milling grooves, only the joint between the spliced PCB and the strip-shaped PCB needs to be broken off in the subsequent board splitting treatment, so that the strip-shaped PCB can be processed in a large batch and with high precision;

2. through the mode of segmentation surely milling, can adjust the stroke of surely milling every section according to rectangular form PCB size, the work that the effort that then milling cutter was applyed produced is difficult for making rectangular form PCB board take place to shrink deformation along the width direction of self to can make rectangular form PCB board flange on length direction more level and more smooth.

Drawings

Fig. 1 is a schematic diagram illustrating a state of a strip PCB on a cnc machine according to an embodiment of the present application.

Description of reference numerals: 1. processing a PCB; 11. a strip-shaped PCB board; 12. assembling a PCB; 2. cutting and milling a groove; 3. and (7) positioning the holes.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses a PCB processing method applied to an LED strip lamp. Referring to fig. 1, the PCB processing method applied to the LED strip lamp includes the steps of: firstly, makeup work is carried out, specifically, the strip-shaped PCB 11 with the width dimension of 8-20mm is selected firstly, then two ends of the strip-shaped PCB 11 are fixedly connected to the two makeup PCB 12 respectively, wherein a milling groove 2 with the width dimension of 1mm is formed between the two adjacent strip-shaped PCB 11, so that a processing PCB 1 which is processed by a numerical control machine tool can be formed, and meanwhile, the milling groove 2 is used for a milling cutter to penetrate, so that in other embodiments, the width dimension of the milling groove 2 can be changed according to the dimension of the milling cutter.

Referring to fig. 1, the second step of fixing the workpiece is performed, specifically, in the first step, two imposition PCB boards 12 are respectively provided with a positioning hole 3, and a connecting line between the two positioning holes 3 is parallel to one diagonal line of the processed PCB board 1; secondly, be provided with the backing plate that the material is the bakelite plate on the station of digit control machine tool, still correspond two locating holes 3 and be provided with the reference column respectively on the backing plate simultaneously, so when needs fix the work piece on the station, need with the locating hole 3 alignment reference column on the processing PCB board 1 can to follow-up installation of carrying out electronic component on the processing PCB board 1.

Referring to fig. 1, the third step of performing a cutting and milling process on the cut and milled slot 2, specifically, in general, the milling cutter performs sectional cutting and milling on the inner wall of the cut and milled slot 2 in the length direction, and then processes a part remaining after the sectional cutting and milling, where there are some points that need to be noticed, one of which is that after the previous cutting and milling is completed, the other end of the next cutting and milling position in the length direction of the long strip PCB 11 is selected to reduce the influence of the stress generated on the long strip PCB 11 during the next cutting and milling on the previous cutting and milling; secondly, still can be provided with sucking disc cylinder and lift cylinder on the digit control machine tool, on the one hand, the sucking disc of sucking disc cylinder can adsorb at rectangular form PCB board 11's upper surface to apply rectangular form PCB board 11 the ascending effort of width direction through the piston rod of sucking disc cylinder, with this balanced effort of surely milling the in-process and applying rectangular form PCB board 11, thereby can make rectangular form PCB board 11's flange can level and more smooth, and then can let the equipment of thin strip lamps and lanterns more convenient.

Referring to fig. 1, on the other hand, the lifting cylinder can apply pressure to the strip-shaped PCB 11 through the suckers on the sucker cylinders, and then after the cutting and milling is completed, the strip-shaped PCB 11 is not easy to bend up and down, so that the overall flatness of the strip-shaped PCB 11 can be improved, in addition, in this design manner, when the milling cutter performs processing on the next position, the sucker cylinders still can be adsorbed on the part of the last cutting and milling position of the strip-shaped PCB 11 for a predetermined time, so that the acting force applied to the strip-shaped PCB 11 can balance the residual stress at the last position, so that the flatness of the strip-shaped PCB 11 can be improved, and meanwhile, after the residual stress disappears, the suckers of the sucker cylinders can release the adsorption, so in this embodiment, there are two groups of sucker cylinders and lifting cylinders on the numerical control machine tool, so as to respectively cooperate with the parts at both ends of the length direction of the strip-shaped PCB 11.

Referring to fig. 1, thirdly, because the middle position of the strip-shaped PCB 11 is more easily deformed relative to the two ends of the strip-shaped PCB, the milling cutter is between different sections of the milling cutter along the middle position of the strip-shaped PCB 11 from the end close to the spliced PCB 12 to the middle position of the strip-shaped PCB 11 in the length direction, the processing stroke and the feeding speed of the milling cutter are lower when the milling cutter is closer to the middle position of the strip-shaped PCB 11, and the feeding speed of the milling cutter is lower when the milling cutter is closer to the middle position of the strip-shaped PCB 11 in each section of the milling cutter, and meanwhile, the two modes can be linearly decreased in a parabolic relation with an upward opening, so that the working parameters of the milling cutter can be adaptively changed according to the position of the milling cutter on the strip-shaped PCB 11, and the plate edge flatness of the strip-shaped PCB 11 can be better maintained.

Referring to fig. 1, since the degree of shrinkage deformation of the strip PCB 11 is related to the width of the strip PCB 11, and the deformation is more likely to occur as the width of the strip PCB 11 is larger, the processing stroke and the feed rate of the milling cutter are inversely related to the width of the strip PCB 11, and the processing method can be adaptively changed according to the size of the strip PCB 11.

Referring to fig. 1, the fourth is divided board preliminary treatment, and is concrete, can carry out the V-CUT to the junction of rectangular form PCB board 11 and makeup PCB board 12 through milling cutter and handle, then follow-up when dividing the board and handling, can directly break off the junction between rectangular form PCB board 11 and the makeup PCB board 12 off with the fingers and thumb to realize quick branch board and handle, thereby make the processing method of this application also can be applicable to in the large batch processing production more, and then can keep PCB's machining efficiency also can reach the purpose that promotes PCB's machining precision.

In addition, in the embodiment, during the milling process of the milling cutter, the numerical control machine tool is provided with an adsorption element near the milling cutter to adsorb and remove the chips generated during the milling process, so that the adverse factor that the plate edge of the strip-shaped PCB 11 is easily uneven can be reduced.

The implementation principle of the PCB processing method applied to the LED strip lamp in the embodiment of the application is as follows: because two adjacent rectangular form PCB boards 11 are the interval makeup, so treat that to accomplish the electron processing back on the rectangular form PCB board 11, carry out the surely milling processing through milling cutter to the inner wall of CUT groove 2 on length direction after, then carry out V-CUT through milling cutter to the junction of rectangular form PCB board 11 and makeup PCB board 12 and handle to can enough satisfy large batch processing production, also can let rectangular form PCB board 11 the flange in length direction more smooth straight.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. A PCB processing method applied to an LED strip lamp is characterized in that: the method comprises the following steps:

s1: two ends of a plurality of strip-shaped PCB boards (11) are respectively connected to two spliced PCB boards (12) for forming a processed PCB board (1), wherein a milling groove (2) for a milling cutter to pass through is formed between two adjacent strip-shaped PCB boards (11);

s2: fixing the processed PCB (1) on a station through two spliced PCBs (12);

s3: processing the inner wall of the tangential milling groove (2) in the length direction by a milling cutter;

s4: and carrying out V-CUT processing on the joint of the strip-shaped PCB (11) and the makeup PCB (12) by a milling cutter.

2. The PCB processing method applied to the LED strip lamp as claimed in claim 1, wherein: the S3 further comprises the following steps:

s31: the inner wall of the tangential milling groove (2) in the length direction is cut and milled in a sectional mode through a milling cutter;

s32: the part of the bisecting milling groove (2) which is remained during the subsection milling is milled away through the milling cutter.

3. The PCB processing method applied to the LED strip lamp as claimed in claim 2, wherein: in the step S31, along the position from one end of the cutting and milling groove (2) close to the makeup PCB (12) to the middle part of the cutting and milling groove (2) in the length direction, the processing stroke and the feeding speed between different sections of cutting and milling of the milling cutter or the feeding speed in each section of cutting and milling are gradually reduced in a linear relation in a parabola shape with an upward opening.

4. The PCB processing method applied to the LED strip lamp as claimed in claim 2, wherein: in the step S31, the positions of two adjacent cutting and milling positions are respectively close to two ends of the cutting and milling groove (2) in the length direction and used for waiting for the stress of the last cutting and milling position to disappear.

5. The PCB processing method applied to the LED strip lamp as claimed in claim 2, wherein: in S31, when the cutting and milling work is carried out, the part, close to the cutting and milling position, of the strip-shaped PCB (11) is applied with a pulling force towards the position of the milling cutter, so that the shrinkage deformation of the strip-shaped PCB (11) is balanced, and meanwhile, pressure is applied to enable the strip-shaped PCB (11) to be attached to a working position.

6. The PCB processing method applied to the LED strip lamp as claimed in claim 5, wherein: in the step S31, when the next position of the long strip shaped PCB (11) is cut and milled, the acting force applied to the long strip shaped PCB (11) at the previous position is still maintained for a predetermined time.

7. The PCB processing method applied to the LED strip lamp as claimed in claim 2, wherein: the width dimension of the long strip-shaped PCB (11) is between 8 and 20mm, and in S31, the stroke and the feeding speed of each section of the milling cutter are in negative correlation with the width dimension of the long strip-shaped PCB (11).

8. The PCB processing method applied to the LED strip lamp as claimed in claim 1, wherein: in the S2, a base plate for placing the processed PCB (1) is arranged on the station; in S3, the milling cutter can contact the shim plate.

9. The PCB processing method applied to the LED strip lamp as claimed in claim 1, wherein: in S3, when the milling cutter works, the chips generated by the cutting and milling can be synchronously sucked away.

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