Circuit board jig, preparation method thereof and circuit board processing method

Abstract

The invention discloses a circuit board jig, a preparation method thereof and a circuit board processing method. The circuit board jig comprises a board body, a slotted hole is formed in the plate body; the vertex angle of the slotted hole is an arc angle, and the size of the arc angle is 0.3-0.5 mm; the thickness of the plate body ranges from 1.5 mm to 2.5 mm. The groove holes are formed in the board body, so that after the board body is attached to the to-be-prepared circuit board, the to-be-prepared circuit board is effectively fixed and limited, the protruding part on the to-be-prepared circuit board is arranged in the groove holes, and the to-be-prepared circuit board is prevented from being scratched by the groove holes through the arrangement of the arc angles; the drill bit does not interfere with the protruding part of the steel sheet during drilling; the board body with the thickness of 1.5 mm-2. 5mm is adopted, the height of the protruding part on the circuit board to be prepared can be effectively covered, the surface height is made to be consistent, drilling machining is more facilitated, and the drilling machining efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board processing, and in particular to a circuit board jig and a preparation method thereof, and a circuit board processing method. Background Art

[0002] In the production of circuit boards, some special structures need to be manufactured. Among them, a circuit board structure with a steel sheet set in a two-layer FPC (Flexible Printed Circuit) is called an FPC-steel-FPC structure.

[0003] Laser processing is currently the primary method used to drill holes in the outer layers of FPC-steel-FPC structures. However, laser processing has numerous limitations. Firstly, laser equipment is expensive, resulting in high procurement costs for companies, and the limited availability of equipment makes it difficult to meet the demands of large-scale production. Secondly, laser processing is inefficient and slow, leading to long production cycles and increased costs. Furthermore, the height difference between the front and back surfaces of the inner layer of the product after the steel sheet is attached and pressed together complicates laser processing, further reducing efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a circuit board jig and a circuit board processing method to improve the circuit board processing efficiency.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A circuit board processing jig comprises a plate body; the plate body is provided with a slot; the top angle of the slot is a circular arc angle, the size of the circular arc angle is 0.3-0.5mm; the thickness of the plate body is 1.5mm-2.5mm.

[0006] In order to solve the above technical problems, another technical solution adopted by the present invention is: A method for preparing a circuit board processing jig, for preparing the circuit board processing jig as described above, comprising: Measure the expansion and contraction dimensions of the circuit board to be prepared; forming slots on the plate body that match the expansion and contraction dimensions; The top corner of each slot is rounded.

[0007] In order to solve the above technical problems, another technical solution adopted by the present invention is: A circuit board processing method, comprising: Prepare a first circuit board processing jig and a second circuit board processing jig; the first circuit board processing jig and the second circuit board processing jig are both the circuit board processing jigs as described in claim 1; Installing the first circuit board processing jig on a workbench; Placing the circuit board to be prepared on the first circuit board processing jig; placing the second circuit board processing jig on the circuit board to be prepared; The workbench is started, and drilling is performed on the circuit board to be prepared according to preset drilling paths and parameters.

[0008] The beneficial effects of the present invention are as follows: by arranging slots on the plate body, after the plate body is bonded to the circuit board to be prepared, the circuit board to be prepared is effectively fixed and limited, so that the protruding portion of the circuit board to be prepared is arranged in the slots, and the slots are prevented from scratching the circuit board to be prepared by setting the arc angles, and the drill bit will not interfere with the protruding portion of the steel sheet when drilling; the plate body with a thickness of 1.5mm-2.5mm can effectively cover the height of the protruding portion on the circuit board to be prepared, so that the surface height is consistent, which is more conducive to drilling processing and improves drilling processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic structural diagram of a circuit board processing jig according to an embodiment of the present invention; Figure 2 This is a flow chart of the steps of a method for preparing a circuit board processing jig according to an embodiment of the present invention; Figure 3 This is a flowchart of the steps of a circuit board processing method according to an embodiment of the present invention; Description of labels: 1. Plate body; 11. Slot hole. DETAILED DESCRIPTION

[0010] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.

[0011] A circuit board processing jig comprises a plate body; the plate body is provided with a slot; the top angle of the slot is a circular arc angle, the size of the circular arc angle is 0.3-0.5mm; the thickness of the plate body is 1.5mm-2.5mm.

[0012] From the above description, it can be seen that the beneficial effects of the present invention are: by arranging slots on the plate body, after the plate body is bonded to the circuit board to be prepared, it plays an effective fixing and limiting role on the circuit board to be prepared, so that the protruding part of the circuit board to be prepared is set in the slots, and the setting of the arc angle prevents the slots from scratching the circuit board to be prepared, and the drill bit will not interfere with the protruding part of the steel sheet when drilling; using a plate body with a thickness of 1.5mm-2.5mm can effectively cover the height of the protruding part on the circuit board to be prepared, so that the surface height is consistent, which is more conducive to drilling processing and improves drilling processing efficiency.

[0013] Another embodiment of the present invention provides a method for preparing a circuit board processing jig, which is used to prepare the circuit board processing jig as described above, comprising: Measure the expansion and contraction dimensions of the circuit board to be prepared; forming slots on the plate body that match the expansion and contraction dimensions; The top corner of each slot is rounded.

[0014] From the above description, it can be seen that by measuring the expansion and contraction dimensions of the circuit board to be prepared and preparing the circuit board processing jig based on the expansion and contraction dimensions, the dimensions of the circuit board processing jig and the dimensions of the slots are more suitable for the current circuit board to be prepared.

[0015] Furthermore, the thickness of the plate body is greater than a preset thickness; the preset thickness is the height difference formed by the protruding parts of the steel sheets in the circuit board to be prepared after pressing.

[0016] From the above description, it can be seen that by setting the thickness of the board body to be greater than the preset thickness, the circuit board processing jig can effectively cover the height of the protruding part on the circuit board to be prepared, making the surface height consistent, which is more conducive to drilling processing.

[0017] Furthermore, the sizes of the slots are all larger than the sizes of the protruding parts of the steel sheet in the circuit board to be prepared.

[0018] From the above description, it can be seen that by making the size of the slot on the circuit board processing jig larger than the size of the protruding part of the steel sheet in the circuit board to be prepared, the protruding part on the circuit board to be prepared is set in the slot, and the slot is prevented from scratching the circuit board to be prepared, and the drill bit will not interfere with the protruding part of the steel sheet when drilling.

[0019] Furthermore, the single side size of the slot is increased by 0.1 mm to 0.3 mm based on the size of the protruding portion of the steel sheet in the circuit board to be prepared.

[0020] From the above description, it can be seen that by making the single-side size of the slot hole 0.1mm-0.3mm larger than the size of the protruding part of the steel sheet, while avoiding interference with the circuit board to be prepared, it is also possible to avoid the effect of too small a size on the force of the part to be processed, causing the processed part to lose support force and making it impossible for the drilling to meet the accuracy requirements.

[0021] Another embodiment of the present invention provides a circuit board processing method, comprising: Prepare a first circuit board processing jig and a second circuit board processing jig; the first circuit board processing jig and the second circuit board processing jig are both the above-mentioned circuit board processing jigs; Installing the first circuit board processing jig on a workbench; Placing the circuit board to be prepared on the first circuit board processing jig; placing the second circuit board processing jig on the circuit board to be prepared; The workbench is started, and drilling is performed on the circuit board to be prepared according to preset drilling paths and parameters.

[0022] From the above description, it can be seen that the beneficial effect of the present invention is: by preparing a first circuit board processing jig and a second circuit board processing jig that match the circuit board to be prepared, and respectively arranging the first circuit board processing jig and the second circuit board processing jig on both sides of the circuit board to be prepared, the protruding parts on both sides of the circuit board to be prepared are arranged in the slots of the first circuit board processing jig and the second circuit board processing jig, which plays an effective fixing and limiting role on the circuit board to be prepared, thereby being more conducive to drilling processing and improving drilling processing efficiency.

[0023] Furthermore, after placing the second circuit board processing jig on the circuit board to be prepared, the method further includes: The first circuit board processing jig, the circuit board to be prepared, and the second circuit board processing jig are fixed.

[0024] As can be seen from the above description, by fixing the first circuit board processing jig, the circuit board to be prepared, and the second circuit board processing jig, it can be ensured that the product will not be displaced during the drilling process.

[0025] Furthermore, fixing the first circuit board processing jig, the circuit board to be prepared, and the second circuit board processing jig includes: The first circuit board processing jig, the circuit board to be prepared and the second circuit board processing jig are fixed by a clamp and / or tape.

[0026] As can be seen from the above description, fixing by tools such as clamps or tapes can effectively fix the first circuit board processing jig, the circuit board to be prepared, and the second circuit board processing jig.

[0027] Furthermore, after drilling the circuit board to be prepared according to the preset drilling path and parameters, the method further includes: The processed circuit board to be prepared is cleaned.

[0028] As can be seen from the above description, by cleaning the processed circuit board to be prepared, debris and dust generated during the drilling process can be removed.

[0029] Furthermore, after drilling the circuit board to be prepared according to the preset drilling path and parameters, the method further includes: The drilled holes on the circuit board to be prepared are inspected by inspection equipment, and if unqualified, rework is performed.

[0030] As can be seen from the above description, the quality of the product is ensured by inspecting the drill holes on the circuit board to be prepared and reworking the holes when they fail the inspection.

[0031] The circuit board jig and its preparation method, as well as the circuit board processing method provided by the present invention, can be applied to circuit board processing scenarios, especially for the processing of circuit boards with FPC-steel sheet-FPC structures. The following is an explanation through specific embodiments: Example 1 Please refer to Figure 1 A circuit board processing jig includes a board 1 having a slot 11 formed therein; the slot 11 has a radiused top angle of 0.3-0.5 mm; and the board 1 has a thickness of 1.5-2.5 mm. The board 1 can be made of fiberglass or FR4. The jig is used to secure the board during production, ensuring a stable position during drilling.

[0032] Please refer to Figure 2 The method for preparing the above-mentioned circuit board processing jig comprises the following steps: S01. Measure the expansion and contraction size of the circuit board to be prepared; that is, the preparation of the circuit board processing jig requires the production of a matching jig according to the size and shape of the circuit board product; use CAD and other engineering software to design the jig based on the measured size and shape data of the circuit board product; when designing the jig, set the size of the slot 11 to be larger than the size of the protruding part of the steel sheet in the circuit board to be prepared; for example, the single-side size of the slot 11 is increased by 0.1mm-0.3mm based on the size of the protruding part of the steel sheet in the circuit board to be prepared, such as 0.1mm in this embodiment, and 0.2mm or 0.3mm in other optional embodiments; that is, the specific window size of the slot 11 is determined according to the size of the steel sheet and the layout design spacing of the circuit board product, and all windows need to be 0.1mm larger than the single side of the steel sheet; thereby effectively avoiding the collision between the drill bit and the protruding part of the steel sheet during the drilling process, thereby ensuring smooth drilling. At the same time, the size of the slot 11 is limited, that is, the single-side dimension of the slot 11 must be controlled to be no larger than 0.3mm. This prevents excessive tolerances on the slot 11, which could lead to a loss of support in the processing section and inability to support the drilling operation. Furthermore, the thickness of the plate 1 is greater than a predetermined thickness; the predetermined thickness is the height difference formed by the protruding portion of the steel sheets after lamination of the circuit board to be manufactured.

[0033] S02. Forming slots 11 on the plate 1 to match the expansion and contraction dimensions. Specifically, the designed jig drawing is imported into a CNC machining center, and the jig is machined using suitable materials, such as fiberglass board. During the machining process, machining accuracy is strictly controlled to ensure that the jig's dimensional tolerances meet design requirements.

[0034] S03. Make an arc treatment on the top angle of each of the slot holes 11. The top angle of the slot hole 11 can be set as an arc angle when designing the jig; that is, the arc treatment of the top angle is completed while executing step S02; or the top angle of the slot hole 11 is made into an arc after the slot hole 11 is formed. By setting the arc angle, it is possible to avoid the right angle of the slot hole 11 scratching the surface of the circuit board product; for example, a 0.5R angle treatment is made on the top angle of the slot hole 11, and the size of the arc angle is 0.3-0.5mm, to ensure that the jig can stably fix the circuit board product, and the drill bit will not interfere with the protruding part of the steel sheet when drilling; if the size of the arc angle is too large, it will affect the support effect on the circuit board product.

[0035] Please refer to Figure 3 A circuit board processing method, using the above-mentioned circuit board processing fixture to process the circuit board, specifically includes the following steps: S0. Prepare a first circuit board processing jig and a second circuit board processing jig; the first circuit board processing jig and the second circuit board processing jig are both the aforementioned circuit board processing jigs. That is, the first circuit board processing jig and the second circuit board processing jig are prepared according to the aforementioned circuit board processing jig preparation method. If the shapes of the front and back sides of the circuit board to be prepared are different, the first circuit board processing jig and the second circuit board processing jig can be prepared separately according to the shapes of the front and back sides of the circuit board to be prepared, so as to match the shapes of the front and back sides of the circuit board to be prepared.

[0036] S1. Install the first circuit board processing jig on a workbench. For example, if the workbench is a CNC drilling machine, install the first circuit board processing jig on the CNC drilling machine and debug the CNC drilling machine to ensure normal operation. Simultaneously, select a high-precision drill bit with the appropriate diameter based on the product's aperture requirements.

[0037] S2. Place the circuit board to be prepared on the first circuit board processing jig; and set the side of the circuit board to be prepared corresponding to the first circuit board processing jig on the first circuit board processing jig.

[0038] S3. Place the second circuit board processing jig on the circuit board to be prepared; then, fix the first circuit board processing jig, the circuit board to be prepared, and the second circuit board processing jig; when fixing, the first circuit board processing jig, the circuit board to be prepared, and the second circuit board processing jig can be fixed by a clamp and / or tape; for example, first use the clamp tape to fix the circuit board to be prepared on the jig, and then use the tape to fix the jig to ensure that the circuit board to be prepared will not be displaced during the drilling process.

[0039] S4. Start the workbench and drill the circuit board to be prepared according to the preset drilling path and parameters. Specifically: according to the material and thickness of the circuit board to be prepared, set the corresponding parameters on the CNC drilling machine according to the file requirements, such as feed speed, rotation speed, retraction speed and other parameters to ensure the cutting depth and retraction amount of the drill bit; then start the CNC drilling machine and perform drilling according to the preset drilling path and parameters. At the same time, during the drilling process, observe the drilling situation in real time, such as observing the cutting state of the drill bit, the depth and diameter of the drill hole, etc., to ensure the drilling quality. If any abnormality is found, stop the machine in time for adjustment. During the drilling process, drill in a stacked manner, such as Figure 1 For example, a whole circuit board product is drilled. Since there is a height difference between the products in this embodiment, only one circuit board product is drilled at a time to ensure the efficiency and quality of drilling. At the same time, since circuit board processing jigs are provided on the upper and lower sides of the circuit board to be prepared, the surface of the circuit board to be prepared can be protected during the drilling process.

[0040] S5. Cleaning the processed circuit board. For example, after drilling is completed, remove the circuit board from the jig and clean it using compressed air or ultrasonic cleaning equipment to remove debris and dust generated during the drilling process.

[0041] S6. Inspect the drilled holes on the circuit board to be manufactured using testing equipment. If unqualified, rework is performed. For example, a microscope or a two-dimensional measuring instrument is used to inspect the quality of the drilled holes, including the accuracy of the hole diameter, the roughness of the hole wall, and the accuracy of the hole position. If unqualified products are found during the inspection, rework is performed promptly.

[0042] The drilling process is carried out by using a CNC drilling machine combined with a specially designed jig. The avoidance treatment of the jig and the precise control of the CNC drilling machine effectively solve the processing difficulties caused by the height difference between the front and back of the product, ensure the accuracy and quality of the drilling, and improve the product yield rate. In addition, compared with the traditional laser processing method, the CNC drilling machine processing method does not require expensive laser equipment, reducing equipment procurement costs and maintenance costs. At the same time, the CNC drilling machine processing method has higher processing efficiency, shortens the production cycle, and thus reduces the production cost per unit product.

[0043] In summary, the circuit board jig, its preparation method, and circuit board processing method provided by the present invention provide slots on the plate body, so that after the plate body is bonded to the circuit board to be prepared, the circuit board to be prepared can be effectively fixed and limited, so that the protruding portion of the circuit board to be prepared is set in the slot, and the setting of the arc angle prevents the slot from scratching the circuit board to be prepared, and the drill bit will not interfere with the protruding portion of the steel sheet during drilling; a plate body with a thickness of 1.5mm-2.5mm is used to effectively cover the height of the protruding portion on the circuit board to be prepared, so that the surface height is consistent, which is more conducive to drilling processing and improves drilling processing efficiency; and a special circuit board jig is combined with a CNC drilling machine, and the avoidance processing of the jig and the precise control of the CNC drilling machine are utilized to solve the processing problems of existing FPC-steel sheet-FPC products.

[0044] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A circuit board processing jig, characterized in that: Including plate body; The plate body is provided with slots; The top angle of the slot is a circular arc angle, and the size of the circular arc angle is 0.3-0.5 mm; The thickness of the plate is 1.5 mm to 2.5 mm.

2. A method for preparing a circuit board processing jig, characterized in that: A circuit board processing jig for preparing the circuit board processing jig according to claim 1, comprising: Measure the expansion and contraction dimensions of the circuit board to be prepared; forming slots on the plate body that match the expansion and contraction dimensions; The top corner of each slot is rounded.

3. The method for preparing a circuit board processing jig according to claim 2, wherein: The thickness of the plate is greater than a preset thickness; The preset thickness is the height difference formed by the protruding parts of the steel sheets in the circuit board to be prepared after being pressed together.

4. The method for preparing a circuit board processing jig according to claim 2, wherein: The size of the slot is larger than the size of the protruding portion of the steel sheet in the circuit board to be prepared.

5. The method for preparing a circuit board processing jig according to claim 4, characterized in that: The single side size of the slot is increased by 0.1mm-0.3mm based on the size of the protruding portion of the steel sheet in the circuit board to be prepared.

6. A circuit board processing method, characterized in that: include: Prepare a first circuit board processing jig and a second circuit board processing jig; the first circuit board processing jig and the second circuit board processing jig are both the circuit board processing jigs as described in claim 1; Installing the first circuit board processing jig on a workbench; placing the circuit board to be prepared on the first circuit board processing jig; placing the second circuit board processing jig on the circuit board to be prepared; The workbench is started, and drilling is performed on the circuit board to be prepared according to preset drilling paths and parameters.

7. A circuit board processing method according to claim 6, characterized in that: After placing the second circuit board processing jig on the circuit board to be prepared, the method further includes: The first circuit board processing jig, the circuit board to be prepared, and the second circuit board processing jig are fixed.

8. A circuit board processing method according to claim 7, characterized in that: The fixing of the first circuit board processing jig, the circuit board to be prepared, and the second circuit board processing jig comprises: The first circuit board processing jig, the circuit board to be prepared and the second circuit board processing jig are fixed by a clamp and / or tape.

9. A circuit board processing method according to claim 6, characterized in that: After drilling the circuit board to be prepared according to the preset drilling path and parameters, the method further includes: The processed circuit board to be prepared is cleaned.

10. A circuit board processing method according to claim 6, characterized in that: After drilling the circuit board to be prepared according to the preset drilling path and parameters, the method further includes: The drilled holes on the circuit board to be prepared are inspected by inspection equipment, and if unqualified, rework is performed.

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