JP2017152664A - Sheet supply apparatus for circuit board and system including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet supply apparatus for a circuit board capable of collecting fibers and resin powder generated from a circuit board sheet without lowering a suction force of sucking means.SOLUTION: A sheet supply apparatus 110 for a circuit board includes: air blowing means (30) for blowing air onto stacked circuit board sheets to float end portions of the circuit board sheets; suction conveyance means 20 for sucking and conveying the floated circuit board sheets; and suction means 40 provided above the suction conveyance means for sucking air from above the suction conveyance means.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a circuit board sheet supply device and a system including the circuit board sheet supply device.

  2. Description of the Related Art Conventionally, a prepreg apparatus and method that can separate and convey a prepreg are known.

  In the prepreg supply device described in Patent Document 1, the end portion, which is the first suction portion of the prepreg stacked by a suction pad that is reversed by a cylinder or the like, is sucked and lifted upward. Furthermore, it is proposed that the second prepreg is picked up and lifted by a suction pad that moves up and down by another cylinder, and the two prepregs that are required are transported separately by horizontally moving both suction pads simultaneously. ing.

  However, the air sucked into the section for supplying the prepreg is mixed with fibers and resin powder scattered from the prepreg sheet, and sometimes enters the inside of the duct or the suction fan.

  Therefore, Patent Document 2 proposes a configuration in which a suction part that sucks dust generated during processing is provided in a process of processing a prepreg, and a filter is provided so that foreign matter does not enter the suction part (patent). Reference 2).

  However, if the processing device of Patent Document 2 is applied to a supply device, the filter may become clogged due to a large amount of fiber or resin powder generated from the prepreg sheet or depending on the transport amount of the device. There was a risk that the force could not be generated.

  Then, it aims at providing the sheet supply apparatus for circuit boards which can collect the fiber and resin powder which generate | occur | produce from the sheet | seat for circuit boards, without dropping the suction | attraction force of an adsorption | suction means.

  In order to solve the above-described problem, in one aspect of the present invention, air is sprayed on the laminated circuit board sheets, and an air spraying unit that floats an end of the circuit board sheet; There is provided a circuit board sheet supply apparatus comprising: a suction conveyance unit that performs suction conveyance; and a suction unit that is provided above the adsorption conveyance unit and sucks air from above the adsorption conveyance unit.

  According to one aspect, in the circuit board sheet supply device, fibers and resin powder generated from the circuit board sheet can be collected without reducing the suction force of the suction means.

1 is a schematic configuration diagram of a circuit board sheet inspection / sorting system including a circuit board sheet supply device according to an embodiment of the present invention. The perspective view of the dust collector connected to the sheet supply apparatus for circuit boards which concerns on embodiment of this invention, and this sheet supply apparatus for circuit boards. Explanatory drawing of an upper suction duct. Explanatory drawing of a side suction duct. Explanatory drawing of the dust collector connected to a suction duct. The perspective view which shows the whole structure which removed the housing | casing and the suction duct of the circuit board sheet | seat supply apparatus which concerns on embodiment of this invention, Comprising: The air flow around a circuit board sheet | seat is shown. The side view which shows the flow of the air by the suction duct in the sheet | seat supply apparatus for circuit boards which concerns on embodiment of this invention. (A) is a perspective view by the side of the upper adsorption means of an upper unit, (b) is a perspective view by the side of the upper conveyance means of an upper unit. (A) is the perspective view of the air blowing means of the center part, (b) The perspective view seen from another angle of the blowing means of the center part which removed the front end guide. It is a schematic block diagram of the structure which covers a sheet | seat test | inspection and sorting system for circuit boards with a cover. The perspective view which removed the housing | casing of the test | inspection apparatus, the surface test | inspection part, and conveyance means provided in the circuit board sheet | seat test | inspection / sorting system of FIG. 1 or FIG. Explanatory drawing of the test | inspection apparatus provided in the sheet | seat test | inspection and sorting system for circuit boards of FIG. Explanatory drawing of the slip sheet apparatus provided in the sheet | seat inspection / sorting system for circuit boards of FIG. FIG. 11 is a perspective view around the inspection apparatus provided in the circuit board sheet inspection / sorting system of FIG. 1 or FIG. 10. The side view of the inspection apparatus of FIG. The enlarged view of the slit periphery of the back surface inspection part of FIG. (A) Top view of transparent glass, (b) Perspective view.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In each embodiment, components (members and components) having the same function, shape, and the like will be omitted by giving the same reference numerals after being described once unless there is a possibility of confusion.

<System>
The present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of a sheet inspection / sorting system 100 according to an embodiment of the present invention. A system 100 illustrated in FIG. 1 includes a circuit board sheet supply device 110, an inspection device 120, a relay conveyance device 130, a sorting device 140, and an acceptable product collection device 150.

  The sheet separation and supply mechanism of the circuit board sheet supply apparatus 110 supplies the circuit board sheets P one by one. The circuit board sheet supply apparatus 110 includes a supply sheet stack (stacking unit) 10, an upper suction conveyance unit (suction conveyance means) 20, and a spraying means 30. Further, a supply sheet elevating mechanism 60 </ b> S including an elevating drive motor 61 may be provided below the stacking unit 10.

  Here, the circuit board sheet P is, for example, an electronic circuit board sheet such as a prepreg. The circuit board sheet includes sheets used for all known circuit boards. For example, a fibrous reinforcing material such as carbon fiber or glass cloth is impregnated with a thermosetting resin mixed with additives such as a curing agent and a colorant, and is heated or dried to be in a semi-cured state. Reinforced plastic molding material (prepreg) is included. Moreover, what processed copper foil, gold foil, etc. to the prepreg, the resin sheet, etc. is also contained. A circuit board manufactured using a circuit board sheet with scratches may cause problems in resistance and other characteristics, so care must be taken when transporting the circuit board sheet. Become.

  In the circuit board sheet supply device 110, the circuit board sheets P are separated and conveyed one by one by holding the circuit board sheets P in a floating state by suction.

  The supplied circuit board sheet P is inspected for foreign matters from the front and back by the inspection device 120. Specifically, the inspection apparatus 120 includes a plurality of conveying means 70 that conveys the circuit board sheet P to be inspected, a surface inspection unit 80 that inspects defects such as foreign matter, resin content, and resin curing degree, and back surface. An inspection unit 90 and the like are provided.

  In this system 100, depending on the inspection result, the circuit board sheet Pa which is a qualified product for which the inspection items of the circuit board sheet P are as specified, and the quality that is flipped in the inspection, other than that, is rejected. Product (recyclable product) circuit board sheet Pb. The rejected product includes a product that may be usable after an operator corrects it, and may include, for example, a case in which a foreign matter attached to the surface can be manually corrected.

  After passing through the inspection device 120, the circuit board sheet P is determined to be accepted or rejected while being conveyed through the relay conveying device 130. Note that the relay transfer device may not be provided, and a sorting device may be provided after the inspection device.

  If the determination of the circuit board sheet P is acceptable, it is conveyed in the A direction by the sorting device 140 and stacked on the acceptable product stack (stacking tray) 151 of the acceptable product collection device 150.

  In the example of FIG. 1, the acceptable product stack 151 is provided on the same line as the distribution device 140, but the acceptable product stack may be provided above the distribution device or inside the distribution device.

  If the circuit board sheet P is determined to be defective by the inspection device 120, the sorting device 140 is rotated (pivoted) so that the feeding direction is obliquely downward (B direction), and is obliquely downward (arrow B). Circuit board sheet P is conveyed in the direction) and stacked on reject product stack (stack tray) 141.

  In the example of FIG. 1, the reject product stack 141 is provided on the lower side of the sorting device. However, the reject product stack is provided on the same line as the sorting device 140 to be an independent device, or as shown in FIG. Alternatively, it may be provided above the conveying path of the sorting device 140-1.

  The circuit board sheet P loaded on the accepted product stack 151 of the accepted product collection apparatus 150 is used as a circuit board sheet in the circuit board manufacturing process.

  A collection sheet lifting mechanism 60 including a lifting drive motor 61 may be provided below the reject product stack for stacking reject products and / or the acceptable product stack 151 (FIG. 1) for stacking acceptable products.

  As a result of separating and supplying the circuit board sheet P by such a system and inspecting whether foreign matter or the like is mixed from the front and back of the circuit board sheet P, the accepted product and the rejected product are sorted and separated from the middle. It is transported by the route and loaded on the reject product stack 142 or the accepted product stack 151. The overall operation of the sheet inspection / sorting system 100 has been described above.

  In addition, an interleaf means 160 provided with an interleaf feeder for interleaving an arbitrary number of sheets in the middle of stacking a plurality of circuit board sheets P may be provided immediately before the acceptable product collection apparatus 150. In addition, the stage which arrange | positions the slip means 160 should just be upstream of the acceptable product collection | recovery apparatus 150 at the latest, and may be provided more upstream.

<Circuit board sheet feeder>
FIG. 2 is a perspective view of the circuit board sheet supply device 110 and the dust collector 200 connected to the circuit board sheet supply device 110 according to the embodiment of the present invention. With reference to FIG.1 and FIG.2, the sheet | seat supply apparatus for circuit boards which concerns on embodiment of this invention is demonstrated.

  The circuit board sheet supply apparatus 110 includes a stacking unit 10, an upper suction conveyance unit 20, an air blowing unit 30, an upper suction duct (suction unit) 40, and a side suction duct (side suction unit) 50. .

  The accommodating part 10 accumulates and accommodates the circuit board sheets P. In the upper suction conveyance unit 20, the upper suction means 21 lifts and holds the circuit board sheet P by sucking the circuit board sheet P from above. The upper conveying means 25 (see FIG. 8) contacts the circuit board sheet P sucked upward from above and conveys the circuit board sheet P. Here, the upper suction means 21 and the upper transport means 25 constitute an integrated upper suction transport unit 20.

  The air blowing means 30 blows air onto the laminated circuit board sheets to float the end portions of the circuit board sheets P. Alternatively, the uppermost circuit board sheet that has been levitated may be separated.

  The upper suction duct 40 and the side suction duct 50 are connected to an external dust collector 200. The dust collector 200 sucks air through the upper suction duct 40 and the side suction duct 50, thereby collecting dust (fiber or resin powder) of the mechanism around the circuit board sheet P in the circuit board sheet supply device 110. ).

<Upper suction duct>
FIG. 3 shows an explanatory view of the upper suction duct 40. The upper suction duct (upper suction means) 40 is a canopy-type dust collection duct provided above the upper suction transport unit (suction transport means) 20.

  The upper suction duct (dust collection duct) 40 includes a cylindrical suction port (mounting flange) 41, a framework 42, a plate-like member 43, a suspension support portion 44, a guide plate 45, and an adhesion buffer member 46. Prepare.

  The suction port (duct portion) 41 is connected to an external dust collector 200 via a hose 211, and sucks air and dust from above the upper suction conveyance unit 20 into the circuit board sheet supply device, and dust (fiber or Collect resin powder.

  The metal rod that constitutes the framework 42 and the acrylic plate that constitutes the plate-like member 43 gradually form a triangular frustum shape with a narrowed opening, thereby efficiently guiding air and collected dust. Can be collected upwards.

  The adhesive buffer member 46 is connected to a joint between the plate-like member 43 and the frame 42 by, for example, sponge tape or the like.

  Referring to FIGS. 2 and 3, the upper suction duct 40 is suspended by the suspension support portion 44 being caught on the frame 112 of the circuit board sheet supply apparatus 110.

  For example, when the upper suction duct 40 is shaken due to strong wind, vibration, or suction of strength from the dust collector 200, the adhesion buffer member 46 buffers strain between the plate-like member 43 and the frame 42.

  In the circuit board sheet supply device 110 according to the embodiment of the present invention, the upper suction duct 40 provided above the upper suction unit 20 sucks air from above the upper suction unit 20, and thus floats on the circuit board. There is an effect that the sheet P is more easily adsorbed to the upper adsorption unit 20.

<Side suction duct>
FIG. 4 is an explanatory diagram of the side suction duct 50. The side suction duct 50 is a suction dust collection duct that is provided at the rear end in the transport direction on the side of the upper suction transport unit 20.

  The side suction duct (dust collection duct) 50 includes a lower suction unit 53 having a suction surface 51 and a relay port 52, two brackets 54, a frame 55, a Y-shaped flange 56, and two relay hoses 57. A mounting flange 58 and a handle 59.

A lower suction unit 53 is provided below the side suction duct 50, and the lower suction unit 53 is attached to a frame-shaped frame 55 by a bracket 54.
A Y-shaped flange 56, two relay hoses 57, a mounting flange 58, and a handle 59 are attached to the framework 55.

  The lower suction unit 53 below the side suction duct 50 sucks air and dust on the suction surface 51 in which a plurality of suction ports are formed, and discharges the air and dust from the relay port 52.

  The two relay ports 52 are connected to the bifurcated hole (cylindrical portion) of the Y-shaped flange 56 via two relay hoses 57, respectively. The Y-shaped flange 56 and the mounting flange 48 are connected in a cylindrical shape inside. A hose 212 connected to the external dust collector 200 is attached to the attachment flange 58.

  Air and dust sucked by the lower suction unit 53 are collected in the dust collector 200 through the relay port 52, the relay hose 57, the Y-shaped flange 56, the mounting flange 56, and the hose 212.

  Since the lower suction unit 53 is provided in the lower part, it is conceivable that dust accumulates due to continuous use. The side suction duct 50 can be slid forward by pulling the handle 59 against the frame (housing) 111 of the circuit board sheet supply device 110 so that dust collected in the lower suction unit 53 can be removed. It is.

  In the above description, the configuration in which both the upper suction duct 40 and the side suction duct 50 are provided has been described. However, even if either one is provided, dust in the housing can be collected.

<Dust collector>
FIG. 5 is an explanatory diagram of the dust collector 200 connected to the suction ducts 40 and 50. The dust collector 200 is mounted on a fixed base 220 and fixed. An intake fan is provided inside the dust collector 200. A connection flange 201 protruding to the outside of the dust collector 200 is connected to the hose 210.

  In the hose 210, the dust collector-side hose 213 is branched into a fork 212 and a hose 211 for the upper suction duct 40 and a hose for the side suction duct 50.

  Air and dust collected from the upper suction duct 40 through the hose 211 and air and dust collected from the side suction duct 50 through the hose 212 are collected in the dust collector 200.

  The dust collector 200 is provided with an exhaust port 204, and exhausts gases other than solid matter as appropriate. Further, the door 202 is provided, and collected dust and the like can be discarded by opening the door 202 as appropriate.

FIG. 6 is a perspective view showing the air flow around the circuit board sheet, with the entire configuration of the circuit board sheet supply device according to the embodiment of the present invention from which the casing and the suction duct are removed.
The arrow Aa is the floating air by the upper suction means 21 of the upper suction conveyance unit 20, the arrow Ab is the separation floating air by the blowing means (separating and floating means) 30, the arrow Ad is the return air by the blowing means separating and floating means 30B at the center, and the arrow Ac shows the side air sprayed from the opening part of the side guide of the stacking part 10.

  FIG. 7 is a side view showing the air flow through the suction duct in the circuit board sheet supply apparatus according to the embodiment of the present invention. As shown in FIG. 7, the air blown by the blowing means 30 or the air sucked by the upper suction means 21 and passed through the upper suction means 21 passes through the upper suction duct 40 and / or the side suction duct 50. It is sucked into the dust collector 200.

  As described above, the fibers and pre-powder generated when the circuit board sheet P is separated and supplied are guided to the dust collector 200 together with the air by the suction ducts 40 and 50, and can be collected in the dust collector 200.

  Therefore, the suction unit is not attached to the upper suction means 21 and is sucked by providing suction ducts 40 and 50 after exhausting, so that the fibers generated from the prepreg constituting the circuit board sheet and the pre-powder filter clogging It is possible to prevent a decrease in suction power.

<Container>
The circuit board sheet supply device 110 includes a side fence that is a pair of sheet position regulating members, a front end guide that is an outlet end, an end fence, and the like that constitute the housing unit 10. The prepreg width direction in which the side fences are arranged on both sides of the sheet width direction Y (the depth direction of the apparatus) of the lower surface portion (supply table) 14 and intersect (orthogonal) the conveyance direction X of the arranged circuit board sheet bundle P. Position Y. The front end guide positions the front end in the length direction corresponding to the conveyance direction X of the sheet bundle P for circuit boards.

  An opening is formed in the side fence. This opening serves as a side air nozzle and is blown from a blower blower means such as a side blower connected to the outside of the side fence to generate the side air for the blower.

  Outside fences 16 are provided outside the side fences. In addition, a peephole is formed in the outer fence 16 so that the inside can be confirmed.

<Upper suction conveyance unit>
FIG. 8A shows a perspective view of the upper suction transport unit 20 on the upper suction means 21 side, and FIG. 4B shows a perspective view of the upper suction transport unit 20 on the upper transport means 25 side.

  With reference to FIG. 8A, the upper suction conveyance unit 20 is provided with a suction blower 22 and a negative pressure air chamber 23 as the upper suction means 21. When the suction blower 22 creates a negative pressure, the connected negative pressure air chamber 23 is in a negative pressure state. The suction blower 22 is provided with a suction nozzle 24 for sucking air.

  Referring to FIG. 8B, the upper suction conveyance unit 20 includes, as upper conveyance means 25, conveyance belts 26a, 26b, 26c, drive rollers 27a, 27b, 27c, and driven rollers 28a, 28b, 28c. Is provided. The driving roller 27 is driven to rotate, and the driven roller 28 is rotated by the conveying belt 26 and rotates while being driven by the driving roller 27.

  Of the three conveyor belts 26a, 26b, and 26c arranged here, the radius of the drive roller 27b and the driven roller 28b that rotates the central conveyor belt is determined by the drive rollers 27a and 27c and the driven rollers 28a and 28c on both sides. It is preferable to reduce the size. With this configuration, a step is formed in the vertical direction Z on the belt holding surfaces of the conveyance belt 26b located at the center in the sheet width direction Y for the circuit board and the conveyance belts 26a and 26c disposed on both outer sides. .

  The conveyor belts 26 a, 26 b, and 26 c are endless belt members in which many suction holes communicating with the negative pressure air chamber 23 are formed. The negative pressure air chamber 23 is sucked from the suction blower 22 and maintains a negative pressure state, and the uppermost circuit board sheet in the supply sheet stack (stacking portion) 10 is floated and held by the suction holes of the conveyance belt 26. To suck. In this way, the circuit board sheets P are floated and held, whereby the circuit board sheets P are separated and conveyed one by one.

<Blowing means>
FIG. 9A is a perspective view of the air blowing means 30 in the central portion, and FIG. 9B is a perspective view of the central blowing means 30B with the front end guide removed from another angle.

  The air blowing means (air injection nozzle unit) 30 is disposed at a position facing the front end of the loaded prepreg bundle P. The air blowing means 30 is provided with an air chamber 33 for sending and storing air (hereinafter also referred to as air) which is a pressurized gas from the outside. Further, as shown in FIG. 9A, the air chamber 33 is provided with a floating nozzle 31 and a shape forming nozzle 32. The inside of the air chamber 33 is separated into a portion for the floating nozzle 31 and a portion for the shape forming nozzle 32, and a blower 34 for the floating nozzle and a blower 35 for the shape nozzle are provided.

  The air blowing means 30 functions as a levitation means for injecting air (floating separation air) and levitation of the prepreg loaded and prepared on the lower surface 14 of the accommodating portion 10. The air, which is a gas, includes air that has been neutralized and other gases that are used to float other prepregs and separate them one by one. In particular, since prepregs containing carbon fibers are in close contact with each other due to the action of static electricity and are not easily separated from each other, it is effective to blow the discharged air to the stacked prepreg bundle P.

  Further, the air blowing means 30 is provided with a side suction nozzle 36 connected to the floating nozzle blower 34 and the air chamber 33. The air blowing means 30 can suck air through the side suction nozzle 36 at a timing different from the timing of blowing air through the floating nozzle 31 and the shape forming nozzle 32. By air suction, the circuit board sheet other than the uppermost one of the floating circuit board sheets P can be sucked and dropped to the side.

<Slide configuration>
FIG. 10 is a schematic configuration diagram of a configuration in which a circuit board sheet inspection / sorting system is covered with an integrated cover. In this system, the entire system is covered with a single case, and the dust collecting means provided in the circuit board sheet supply device 11 moves the dust (the circuit board sheet) in the case 112 of the entire system. Collect fiber and resin powder generated in

  Here, in order to improve the performance of the dust collector, it is preferable that the transport unit 70 be removable during the period when the dust collector 200 is activated.

  FIG. 11 is a perspective view of the inspection device 120 provided in the circuit board sheet inspection / sorting system 100 of FIG. 1 or FIG. 10 with the casing, the surface inspection unit 80, and a part of the conveying means 70 removed. Show.

  As shown in FIG. 11, in the conveying means 70, a conveying belt 71 is arranged at the center in the width direction of the recording medium, and guide plate units 72, 72 are arranged on both sides thereof.

  Here, since the guide plate preferably has no irregularities, it is preferable that the guide plate is formed of a single SUS plate. This is because if there is even an edge, the contact pressure is concentrated there and powder is generated. When it is made of SUS, the surface hardness of the guide plate is Hv500 or more.

  The guide plate unit may be configured by a glass plate.

  Further, in the case where a functional unit that performs some function is provided above the transporting means that is detachably provided, it is necessary to remove the functional unit provided in the upper part in order to remove the transporting means 70. Therefore, it is preferable that the functional unit is slidable in order to secure a detaching space for the conveying means.

  FIG. 12 shows an inspection apparatus provided in the circuit board sheet inspection / sorting system of FIG. For example, the surface inspection unit 80 is provided above the plurality of conveyance units 70 and is movable in the conveyance direction of the circuit board sheet P. After the movement, the conveying means 70 can be removed.

  FIG. 13 shows an apparatus including slip sheet means 160 provided in the circuit board sheet inspection / sorting system 100 of FIG.

  The slip sheet means (slip sheet unit) 160 distinguishes (counts) the circuit board sheets P for each arbitrary number of sheets. The slip sheet unit (functional unit) 160 is provided above the transport unit 70 and is movable in the transport direction of the circuit board sheet P. After the movement, the conveying means 70 can be removed.

<Inspection Department>
FIG. 14 is a perspective view of the periphery of the inspection apparatus provided in the circuit board sheet inspection / sorting system of FIG. 1 or FIG.

  If dust or dust gets into the optical path of the inspection device, or if the dust or dust adheres to an optical system such as a half mirror, the dust is reflected in the picked-up image resulting from the inspection, which may cause an erroneous inspection.

  Therefore, it is conceivable to cover the optical system with a transparent material such as transparent glass in order to prevent dust and dust from entering and to prevent adhesion to the optical system.

  However, when light reflected from the surface of a transparent material such as transparent glass is incident on the imaging lens, it is mixed with the reflected light from the surface of the circuit board sheet and is collected on the imaging lens, and cannot be correctly inspected. was there. Therefore, in the present invention, the optical system is configured in the inspection apparatus as follows.

  As shown in FIG. 14, the front surface inspection unit 80 is provided on the upper side of the conveyance unit 70, and the back surface inspection unit 90 is provided on the lower side of the conveyance unit 70.

  FIG. 15 is a side view of the inspection apparatus of FIG. The surface inspection unit 80 includes an illumination lens 81, a half mirror 82, a transparent glass cover 83, and an imaging lens unit 84 including an imaging lens (not shown). The illumination 81 is used for irradiating the surface (inspection surface) of the circuit board sheet P. The half mirror 82 reflects light from the illumination. The transparent glass 83 transmits the light from the half mirror 82.

  The light is projected from the illumination 81, the light is applied to the surface of the circuit board sheet P through the half mirror 82, and the specularly reflected light from the circuit board sheet of the light passing through the half mirror 82 and the transparent glass 83 is reflected. The light is received by the imaging lens unit 84 and inspected.

  Here, as shown in FIG. 15, since the transparent glass 83 is inclined with respect to the light path of the irradiation light and the reflected light to the circuit board sheet, the light reflected by the surface of the transparent glass 83 (arrow R) is It does not go to the imaging lens unit 85.

  The back surface inspection unit 90 includes an illumination 91, a half mirror 92, a transparent glass (cover) 93, an imaging lens unit 94 including an imaging lens, and a slit 96.

  The illumination 91 is used to irradiate the back surface (inspection surface) of the circuit board sheet P. The half mirror 92 reflects light from the illumination. The transparent glass 93 transmits the light from the half mirror 92.

  Here, the transmission surface of the transparent glass 93 is inclined with respect to the optical path of the irradiation light and reflected light to the circuit board sheet P.

  In order to move the circuit board sheet P, a conveyance means 70 such as a conveyance belt 71 and a guide plate 72 is disposed below the circuit board sheet P where the back surface inspection unit 90 is provided.

  The periphery of the circuit board sheet P of the back surface inspection unit 90 will be described. FIG. 16 is an enlarged view of the periphery of the slit 96 in the back surface inspection portion of FIG. 15, FIG. 17A is a top view of the transparent glass 93, and FIG. 17B is a perspective view of the transparent glass 93.

  The additional drawing shows the periphery of the circuit board sheet of the back surface inspection unit 90 in more detail. As shown in FIG. 16, there are a conveyor belt 71 and belt drive rollers 73 and 73, and there are many housings and drive circuits for supporting them. Note that one of the rollers around which the conveyor belt 71 is wound may be a driven roller.

  The slit 96 covers the transparent glass 93 in the back surface inspection unit 90 in order to block the light that is reflected by these and illuminates the reading position.

  By providing the slit 96 at such a position, the light projected from the illumination hits a conveying belt or the like conveying the circuit board sheet P, and the irregularly reflected light passes through the half mirror 92 for the circuit board. The sheet is not irradiated on the inspection surface of the sheet or enters the imaging lens unit 94.

  Therefore, the light transmitted through the transmission surface of the transparent glass 93 and passing through the prism 97 reaches the back surface of the circuit board sheet P directly without passing through the transport unit 70, and the interference from the transport unit 70 in the back surface inspection. Can be avoided.

  As described above, the angle of the transparent glasses 83 and 93 is set so that the light reflected by the surfaces (transmission surfaces) of the transparent glasses 83 and 93 is not condensed on the imaging lens in both the front inspection portion and the back inspection portion. And it arrange | positions in the state inclined with respect to the imaging lens. With this configuration, the light reflected by the transparent glass is collected at a different location from the imaging lens, and only the reflected light from the circuit board sheet is collected on the imaging lens, so that it can be accurately inspected. . Therefore, the inspection speed of the circuit board sheet can be improved and the production efficiency can be increased.

  In the present embodiment, only the transparent glass cover of the back surface inspection unit 90 is covered with the slit portion, but the transparent glass cover of the surface inspection unit 80 may be covered with the slit portion in consideration of the influence of irregularly reflected light. Or the transparent glass cover of the back surface inspection part 90 may not be covered with the slit part in consideration of the influence of the irregularly reflected light.

  The circuit board sheet which is the separation / conveyance object of the present invention includes sheets used for all known circuit boards. For example, a fibrous reinforcing material such as carbon fiber or glass cloth is impregnated with a thermosetting resin mixed with additives such as a curing agent and a colorant, and is heated or dried to be in a semi-cured state. Reinforced plastic molding material (prepreg) is included. Moreover, what processed copper foil, gold foil, etc. to the prepreg, the resin sheet, etc. is also contained.

  As mentioned above, although this invention has been demonstrated based on each embodiment, this invention is not limited to the requirements shown in the said embodiment. With respect to these points, the gist of the present invention can be changed without departing from the scope of the present invention, and can be appropriately determined according to the application form.

110 Circuit board sheet supply device 10 Stacking unit 20 (20A, 20B, 20C, 20D, 20E, 20F) Upper suction conveyance unit (suction conveyance means)
21 Upper suction means 22 Suction blower 23 Negative pressure air chamber 24 Suction nozzle 25 Upper transport means 26 (26a, 26b, 26c) Upper transport belt (transport belt)
27 driving roller 28 driven roller 30 spraying means (air spray nozzle unit)
31 Floating nozzle (outlet)
32 Shape forming nozzle (outlet)
33 Air chamber 36 Peripheral guide 40 Upper suction duct (suction means)
41 Cylindrical suction port (mounting flange)
42 frame 43 plate-like member 44 suspension support part 45 guide plate 46 adhesion buffer member 50 side suction duct (side suction means)
51 Suction surface 52 Relay port 53 Lower suction unit 54 Bracket 55 Frame 56 Y-shaped flange 57 Relay hose 58 Mounting flange 59 Handle 70 Conveying means (conveying unit)
71 Conveying belt 72 Guide plate 73 Roller 80 Front surface inspection unit 90 Back surface inspection unit 81, 91 Illumination 82, 92 Half mirror 83, 93 Transparent glass (glass cover)
84, 94 Imaging lens unit 96 Slit (slit part)
DESCRIPTION OF SYMBOLS 100 Sheet inspection / sorting system 120 Inspection apparatus 130 Relay conveyance apparatus 140,140-1 Sorting apparatus 150 Successful product collection apparatus (sheet collection apparatus)
151 Passed product stack 160 Interleaving paper device 170 Rejected product collection device (sheet collection device)
141, 142 rejected product stack 200 dust collector 210, 211, 212, 213 hose P circuit board sheet

JP 2003-31769 A Republished patent 2011-1151492

Claims (10)

Air blowing means for blowing air to the laminated circuit board sheets, and causing the ends of the circuit board sheets to float; and
Suction conveyance means for sucking and conveying the floated circuit board sheet;
A suction unit that is provided above the suction conveyance unit and sucks air from above the suction conveyance unit;
Circuit board sheet supply device. A side suction unit provided on a side of the suction conveyance unit;
The sheet supply apparatus for circuit boards according to claim 1. The suction conveyance means is not provided with a filter,
The sheet supply apparatus for circuit boards according to claim 1 or 2. A system comprising the circuit board sheet supply device according to any one of claims 1 to 3,
The system is entirely covered with a single housing,
The suction means sucks air in the casing of the entire system;
system. The system includes any functional device at the subsequent stage of the circuit board sheet supply device,
In the functional device, a plurality of conveying means for conveying the circuit board sheet in contact with the circuit board sheet from below is provided side by side in the conveying direction of the circuit board sheet,
The plurality of transport means are removable.
The system according to claim 4. The functional device includes an inspection device,
The inspection apparatus includes a surface inspection unit that inspects the surface of the circuit board sheet, a back surface inspection unit that inspects the back surface of the circuit board sheet, and the plurality of conveying units.
The system according to claim 5. The surface inspection unit is provided above the plurality of conveyance units and is movable in the conveyance direction of the circuit board sheet.
The system according to claim 6. The front surface inspection unit and the back surface inspection unit are
An imaging lens unit for photographing an inspection surface of the conveyed circuit board sheet;
Illumination for irradiating the inspection surface of the circuit board sheet;
A half mirror that reflects light from the illumination, and a transparent glass that transmits light from the half mirror,
The transmission surface of the transparent glass is inclined with respect to the imaging lens unit.
The system according to claim 6 or 7. The back surface inspection unit includes a slit that covers the transparent glass,
The slit is provided in the transport direction so as to face a gap between adjacent transport means.
The system according to claim 8. The system further includes a slip sheet unit for distinguishing the circuit board sheet for each arbitrary number of sheets,
The slip sheet unit is provided above the plurality of transport means and is movable in the transport direction of the circuit board sheet.
The system according to any one of claims 5 to 9.