CN217344510U

CN217344510U - Automatic appearance processingequipment of oversize printing board segmentation

Info

Publication number: CN217344510U
Application number: CN202123351332.9U
Authority: CN
Inventors: 林木云
Original assignee: Nanjing Pujiang Electronics Co ltd
Current assignee: Nanjing Pujiang Electronics Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-09-02
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses an automatic appearance processing device for the subsection of an oversized printed board, a plurality of push rod holes are arranged on a working table surface, push rods are arranged in the push rod holes, the lower end of each push rod is connected with an ejection mechanism, two partition driving devices are symmetrically arranged on the front side and the rear side below the working table surface, each partition driving device comprises a motor, the output end of each motor is connected with a lead screw, a plurality of lead screw nuts are arranged on the lead screw, air cylinders are arranged on the lead screw nuts, supporting rods are arranged on the output ends of the air cylinders, sucking discs are fixed at the other ends of the supporting rods and are contacted with the bottom surface of a backing plate, the upper part of the working table surface is fixedly connected with the backing plate through first pins, and the upper part of the backing plate is connected with a plurality of printed boards through second pins, compared with the prior art, the utility model only needs to make smaller changes on the original printing numerical control milling machine, and can utilize the smaller working table surface to complete the appearance processing of the oversized printed board, the processing size range of the equipment is greatly expanded.

Description

Automatic appearance processingequipment of oversize printing board segmentation

Technical Field

The utility model relates to a printed wiring board manufacturing field, concretely relates to automatic appearance processingequipment of super large-size printing board segmentation.

Background

In the manufacturing process of the printed circuit board, four edges of a product are provided with processing technological edges; various printed board products need to design the size elements of all parts of the machine according to the needs of the transfer structure and the assembly size structure. Therefore, after all the circuit patterns and the surface coating are finished on the printed circuit board, the printed circuit board needs to be subjected to shape cutting processing to be processed into the structural size required by customers. Due to the limitation of the product transferring space, certain deviation requirements are required for the overall dimension of the printed board product.

The appearance of the printed board is processed by a special numerical control milling machine of the printed board in a conventional method, the equipment conforms to the processing characteristics of printed board products, the processing precision can meet the requirement, the positioning and fixing are convenient, a dust absorption and pressing device is arranged in the processing process, the processing cutting fluid is not required to be cooled, the printed board products are prevented from being polluted, the processing files of the products are convenient to convert, and the processing efficiency is high. However, the processing size of a general numerical control milling machine for printed boards is limited, the numerical control milling machine can only be suitable for conventional products, and can only process products with the size of 600mm to 500mm, products with the size of 900mm to 750mm can be processed by specially enlarging customized equipment, and when the size of the products exceeds 900mm, the conventional equipment and the processing method are used, and the processing method cannot be used.

At present, the appearance processing of oversized printed board products with the product size exceeding 900mm is realized by coordinating with machining manufacturers to process, and a machining numerical control milling machine (such as machining equipment such as a machining center) with a large table-board size is used, so that the processing efficiency is low, the cost is high, the products are polluted by cutting fluid and the like, and the surface quality of the products is difficult to guarantee. And secondly, directly cutting by using a plate shearing machine, and then polishing by using sand paper. The method has the advantages of large processing size deviation, low processing efficiency and high labor intensity, can only process products with rectangular size structures, and cannot process structures such as grooves, steps, inner grooves and the like.

Disclosure of Invention

For solving the deficiencies of the prior art, an object of the utility model is to provide a processing is simple, little green high, and the processing cost is low, processingquality and the high automatic appearance processingequipment of oversize printing board segmentation of precision

In order to realize the above object, the utility model adopts the following technical scheme:

an automatic contour machining device for an oversized printed board in a segmentation way comprises a numerical control milling machine for the printed board and is characterized in that, the numerical control milling machine for the printed board comprises a working table surface and a milling system, wherein a plurality of push rod holes are arranged on the working table surface, a push rod is arranged in the push rod hole, the lower end of the push rod is connected with an ejection mechanism, two partition driving devices are symmetrically arranged on the front side and the rear side below the working table surface, the partition driving device comprises a motor, the output end of the motor is connected with a screw rod, a plurality of screw rod nuts are arranged on the screw rod, the screw rod nut is provided with an air cylinder, the output end of the air cylinder is provided with a supporting rod, the other end of the supporting rod is fixed with a sucker, the sucking disc contacts with the bottom surface of backing plate, table surface top is through first pin and backing plate fixed connection, the backing plate top is connected with a plurality of printing boards through the second pin.

As a further preference of the utility model, the width of backing plate is greater than the distance between two lead screws, the backing plate top surface is provided with a plurality of divisions, and is provided with graphical identification on every division, and graphical identification generally sets up at the marginal zone of subregion, every be provided with a set of first pinhole on the division, and cooperate with first pin, be provided with a plurality of second pinholes on the division, and with the cooperation of second pin, the biggest processing range of all divisions should be in the biggest processing range of milling machine.

As a further preferred aspect of the present invention, the backing plate is made of an epoxy plate or an aluminum alloy plate, and has a thickness of 5mm to 10 mm.

As a further preference of the utility model, take interference fit between first pin and the table surface, take excessive cooperation between first pin and the backing plate, guarantee to fix a position between backing plate and the table surface accurately.

As a further preference of the utility model, take interference fit between second pin and the backing plate, take intermittent type cooperation between second pin and the printing board to make things convenient for getting of product to put.

As a further preferred feature of the present invention, the milling system includes a milling cutter and a dust suction presser foot.

As a further preference of the present invention, a milling path is provided along the outer contour of the printed board, the milling path includes a milling area and a milling feeding direction, the milling path is used for programming, and an automatic processing program is provided for the milling cutter.

The utility model discloses an useful part lies in:

1. the utility model has simple structure, can utilize a smaller working table surface to finish the appearance processing of the printed board with oversize size only by making smaller changes on the original printing numerical control milling machine, and greatly expands the processing size range of the equipment;

2. the processing precision of the product is guaranteed, and the size precision and the position precision of the processed product completely meet the size requirement of the product through the positioning of the base plate pins and the positioning of the product pins;

3. the device is simple, has strong applicability, is convenient for material obtaining and manufacturing of the positioning base plate, is a universal device, can be suitable for various products, and can be used for replacing positioning pins of the products among the various products;

4. by adopting automatic control, the programs among all the processing area groups realize continuous control, the processing efficiency is high, the automation degree is good, and the error probability when each processing area is converted by personnel operation is avoided;

5. the programming is simple, the subprogram among a plurality of areas is easy to be divided from the whole file when being programmed, the inspection and the adjustment are convenient, and the error rate of splicing errors and the like which are easy to occur when the original program of each area position is completely and independently programmed is reduced or even avoided;

6. in the processing process, the original dust absorption and pressing plate system of the equipment is still used, so that the surface of the product is prevented from being polluted, and the working condition of serious dust pollution in the manual polishing and other modes is improved;

7. the utility model discloses all promote by a wide margin on production efficiency, processingquality and production cycle, reduced manufacturing cost simultaneously.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3 is a top view of the present invention;

fig. 4 is a partially enlarged view of B in fig. 3.

The meaning of the reference symbols in the figures: 1. the device comprises a working table top, 2, a first pin hole, 3, a first pin, 4, a base plate, 6, a printed board, 7, a second pin, 8, a screw rod, 9, a motor, 10, a screw rod nut, 11, a cylinder, 12, a supporting rod, 13, a sucker, 14, an ejection mechanism, 15, a push rod, 16, a push rod hole, 17, a milling cutter, 18, a milling feeding direction, 19, a milling area, 20, a dust suction presser foot, 22, a schematic outline diagram, 23 and a partition boundary.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The automatic contour machining device for the oversized printed board in the segmentation comprises a printed board 6 numerical control milling machine and is characterized in that the printed board 6 numerical control milling machine comprises a working table surface 1 and a milling system, a plurality of push rod holes 16 are formed in the working table surface 1, push rods 15 are arranged in the push rod holes 16, the lower ends of the push rods 15 are connected with ejection mechanisms 14 (the ejection mechanisms 14 are the prior art, the description is omitted), two partition driving devices are symmetrically arranged on the front side and the rear side below the working table surface 1, each partition driving device comprises a motor 9, the output end of each motor 9 is connected with a lead screw 8, a plurality of lead screw nuts 10 are arranged on the lead screw 8, an air cylinder 11 is arranged on each lead screw nut 10, a supporting rod 12 is arranged on the output end of the air cylinder 11, a sucking disc 13 is fixed to the other end of the supporting rod 12, and the sucking disc 13 is in contact with the bottom surface of a base plate 4, the upper side of the working table surface 1 is fixedly connected with a base plate 4 through a first pin 3, and the upper side of the base plate 4 is connected with a plurality of printed boards 6 through a second pin 7.

The width of backing plate 4 is greater than the distance between two lead screws 8, 4 top surfaces of backing plate are provided with a plurality of divisions, and are provided with the graphical identification on every division, and the graphical identification generally sets up at the marginal zone of division, every be provided with a set of first pinhole 2 on the division, and cooperate with first pin 3, be provided with a plurality of second pinholes on the division, and with the cooperation of second pin 7, the biggest processing range of all divisions should be in the biggest processing range of milling machine.

The milling system comprises a milling cutter 17 and a dust suction presser foot 20.

Along the outer contour of the printed board 6, a milling path is provided, which comprises a milling area 19 and a milling feed direction 18, the milling path being used for programming and providing an automatic machining program for the milling cutter 17.

For better explanation of the present invention, the following description specifically describes the working process thereof:

the partition driving device is a servo system in the X direction, the moving range of a lead screw nut needs to cover all the working table surfaces 1 on the numerical control milling machine of the printed boards 6, the lead screw nut drives an air cylinder 11 to move back and forth along the X axis direction, the air cylinder 11 drives a sucking disc 13 to move up and down through a support rod 12, the top surface of the backing board 4 is partitioned, and the printed boards 6 are combined through a second pin 7, wherein a plurality of same printed boards 6, namely the printed boards 6 which are the same in the milling area and have the same structure, can be stacked above the backing board 4 through the second pin 7 and are formed through one-step processing through a milling cutter 17; and each partition is provided with a graphic mark so as to facilitate an optical system of the equipment to automatically identify the serial number of the processing area.

And (3) preparing a processing file programming, namely dividing the outline graph of the printed circuit board into a plurality of relatively independent processing areas according to the partitions of the backing plate 4, and independently programming an outline subroutine in each processing area. Before the main program calls each subprogram, a step of sucking and locking the sucker 13 and a step of pattern recognition are added. After the processing subprogram of the first group of area graphs is processed, a step of ejecting materials on an ejection mechanism 14, a step of ejecting materials on an air cylinder 11, a step of adsorbing by a sucking disc 13, a step of driving by a servo motor 9, a step of pulling down the air cylinder 11 and the like are added.

The use process comprises the following steps: preparing an oversized backing plate 4, wherein the backing plate 4 can be made of a flat epoxy plate or an aluminum alloy plate with the thickness of 5-10mm, machining a required first pin hole 2 and the working range of a base distance PCB numerical control milling machine working table board 1 by utilizing a machining center, partitioning the oversized backing plate 4 into a plurality of partitions in an effective working range (generally, the partition is 10-30mm smaller than the maximum machining size of the milling machine, for example, the maximum machining size of the equipment working table board 1 is 520 x 460, and the partitions can be partitioned according to 500 x 450), setting the x-direction spacing and the y-direction spacing among the partitions according to the above principle, machining a plurality of first pin holes 2 in each partition, setting the aperture of each first pin hole 2 to be 3-5mm, and setting a conical horn mouth below the first pin hole 2 to facilitate accurate clamping.

A region identification pattern having a coding function is formed at a specific position (generally, at an edge region) of each of the component regions.

During production, on a numerical control machining workbench surface 1 (generally, a middle workbench surface and a corresponding main shaft of a three-shaft or four-shaft drilling machine are taken as machining shafts, and the rest shafts are not used for closing), a group of corresponding positioning holes are machined on the workbench surface 1 according to first pin holes 2 on partitions of a backing plate 4, first pins 3 are installed, an interference fit mode is adopted between the first pins 3 and the workbench surface 1, and an over-fit mode is adopted between the first pins 3 and the backing plate 4; the first pin 3 is required to be not exposed out of the large-size base plate 4, so that the positioning between the positioning base plate 4 and the working table top 1 is accurate.

Mounting a base plate 4 on a first pin 3 of the working table top 1, manufacturing a second pin hole on the base plate 4 according to the requirement of a printed board 6, and installing and rotating a second pin 7; the second pin 7 and the base plate 4 are in interference fit, and the second pin 7 and the printed board 6 are in intermittent fit, so that the products can be conveniently taken and placed.

After the positioning and the installation of the product are completed, the motor 9 is started, the suction cup 13 is moved to a proper position on the bottom surface of the backing plate 4, the suction cup 13 is lifted through the air cylinder 11, the backing plate 4 is adsorbed on the suction cup 13 and pulled downwards, and the backing plate 4 is fixed on the working table surface 1.

The printed board 6 to be processed is mounted on the second pin 7, and as with a conventional processing technology, a plurality of layers of printed boards 6 can be simultaneously mounted and clamped according to the thickness of a product, so that the processing efficiency is improved. And starting a machining program, starting the main shaft of the selected machining unit, and starting machining by the milling cutter 17 of the numerical control milling machine according to the programmed path.

During machining, the dust collection pressure foot 20 presses the product downwards and starts a dust collection system, and the dust collection pressure foot 20 presses the product downwards to play a role in assisting in clamping, so that the product is prevented from jumping upwards. The dust collection system is started to timely absorb and collect dust generated by processing, so that the working environment is improved.

After the processing of the first area is finished, the dust absorption presser foot 20 is lifted, dust absorption is closed, the milling cutter 17 main shaft lifts and stops rotating, the milling cutter returns to the initial position, the original ejector rod mechanism of the numerical control milling machine acts to drive the ejector rod to eject the backing plate 4 upwards, and meanwhile, the air cylinder 11 of the sucking disc 13 is also pushed upwards synchronously to enable the backing plate 4 to be separated from the position of the first pin 3; then the motor 9 is started to push the screw nut to move left and right in the X direction, the sucking disc 13 on the screw nut 10 drives the backing plate 4 to move to the next processing area position, the moving distance is set in the program, so that the backing plate can just move by the distance of one processing area, and the first pin 3 is ensured to just aim at the next group of hole positions; the cylinder 11 moves downwards, the sucking disc 13 is driven to pull the backing plate 4 downwards to be sleeved into the first pin 3, and the backing plate 4 finishes the positioning and clamping of the second group of processing areas.

The optical scanning system scans and recognizes the pattern recognition on the backing plate 4, and the numerical control machine calls the corresponding processing subprogram to process the appearance in the area.

And analogizing in turn, after the graph in one area is processed, automatically ejecting and stripping the backing plate 4, moving the sucker 13 to drive the backing plate 4 to move, moving the product positioned and fixed on the backing plate 4 to the next processing area, then fixing and clamping, scanning the graph identification, transferring the corresponding processing program file to process until all processing processes are completed in the same row, returning the positioning backing plate 4 to the first processing area to be fixed, moving the backing plate 4 to the first group of graph areas of the second row (the schematic diagram is provided with two rows, namely a, b and c are the first row, and d, e and f are the second row), and continuously processing according to the above mode until the graph in the row is completely processed.

And analogizing in sequence, after all the areas are machined, taking out the machined products, reinstalling the next batch of products to be machined in the second pins 7 on the base plate 4, and starting a program to perform new circular machining.

The utility model discloses an useful part lies in:

1. the utility model has simple structure, and can utilize the smaller working table surface 1 to finish the appearance processing of the printed board 6 with oversized dimension only by making smaller changes on the original printing numerical control milling machine, thereby greatly expanding the processing dimension range of the equipment;

2. the processing precision of the product is guaranteed, and the size precision and the position precision of the processed product completely meet the size requirement of the product through the pin positioning of the backing plate 4 and the pin positioning of the product;

3. the device is simple, has strong applicability, and the positioning backing plate 4 is convenient to obtain materials and manufacture, and the positioning backing plate 4 is a universal device and can be suitable for various products, and the positioning pins of the products are required to be replaced among various products;

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. An automatic contour machining device for an oversized printed board in a segmented manner comprises a numerical control milling machine for the printed board, it is characterized in that the printed board numerical control milling machine comprises a working table surface and a milling system, a plurality of push rod holes are arranged on the working table surface, a push rod is arranged in the push rod hole, the lower end of the push rod is connected with an ejection mechanism, two partition driving devices are symmetrically arranged on the front side and the rear side below the working table surface, the partition driving device comprises a motor, the output end of the motor is connected with a screw rod, a plurality of screw rod nuts are arranged on the screw rod, the screw rod nut is provided with an air cylinder, the output end of the air cylinder is provided with a supporting rod, the other end of the supporting rod is fixed with a sucker, the sucking disc contacts with the bottom surface of backing plate, table surface top is through first pin and backing plate fixed connection, the backing plate top is connected with a plurality of printing boards through the second pin.

2. The automatic contour machining device for the oversized printed board in the segmenting mode according to claim 1, wherein the width of the base plate is larger than the distance between two screw rods, a plurality of partitions are arranged on the top surface of the base plate, graphic marks are arranged on each partition, a group of first pin holes are formed in each partition and matched with the first pins, and a plurality of second pin holes are formed in each partition and matched with the second pins.

3. The automatic contour machining device for the oversized printed board in the segmenting mode according to claim 1, wherein the backing plate is made of an epoxy plate or an aluminum alloy plate, and the thickness of the backing plate is 5mm-10 mm.

4. The automatic contour machining device for the oversized printed board in the segmentation manner according to claim 2, wherein the first pin is in interference fit with the working table, and the first pin is in excessive fit with the base plate.

5. The automatic contour machining device for the oversized printed board in the segmented mode according to claim 2, wherein the second pin is in interference fit with the base plate, and the second pin is in intermittent fit with the printed board.

6. The automatic contour machining device for the oversized printed board in the subsection according to claim 1, wherein the milling machining system comprises a milling cutter and a dust suction presser foot.

7. The device for automatically processing the sectional shape of the oversized printed board as claimed in claim 1, wherein a milling path is arranged along the outline of the printed board, the milling path comprises a milling area and a milling feeding direction, and the milling path is used for programming and providing an automatic processing program for a milling cutter.