JP3824097B2 - Bonding optimization device for electronic component mounting machine and bonding optimization device for dispenser for bonding electronic components - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention provides an electronic component mounting machine in which an adhesive dot is formed on the surface of a printed circuit board and an electronic component is adhered to the surface of the printed circuit board using the dot, or an electronic component is mounted on the surface of the printed circuit board. In an electronic component bonding dispenser for forming adhesive dots for bonding components, the size of the dots is set to an appropriate value, and the bonding optimization device is configured to properly bond the electronic component to the surface of the printed circuit board It is.
[0002]
[Prior art]
  Conventionally, the electronic component mounting machine is configured as follows.
[0003]
  That is, a loader for stacking and storing printed circuit boards on which electronic components are not mounted is provided. A conveyor is provided to take out the printed circuit boards from the loader one by one and convey the printed circuit board to a predetermined position on the work table. An industrial robot is supported on the work table.
[0004]
  The robot has a head that is relatively movable to a desired position when viewed from the printed circuit board conveyed to a predetermined position on the work table. This head is provided with an adhesive discharge means that discharges an adhesive for a certain discharge period and applies it to the surface of the printed circuit board to form dots.
[0005]
  When electronic components are mounted on the surface of the printed board, first, the printed board is transported from the loader by the conveyor and positioned at a predetermined position on the work table.
[0006]
  Next, the adhesive discharge means discharges the adhesive to a predetermined position on the surface of the printed circuit board for a predetermined discharge period, and applies it to the surface of the printed circuit board to form dots. Next, the electronic component conveyed by the robot head is adhered to the surface of the printed circuit board by the dots. Then, the mounting operation of the electronic component by the electronic component mounting machine is finished.
[0007]
  On the other hand, the dispenser for adhering electronic components forms a plurality of dots of adhesive for adhering the electronic components on the surface of the printed circuit board. When the dot formation on the surface of the printed circuit board is completed, The board is sent to another electronic component mounting machine which is the next process. The other electronic component mounting machine here is different from the above-described electronic component mounting machine in that the electronic component is simply adhered to the surface of the printed board by the dots.
[0008]
  The electronic component bonding dispenser has a loader, a conveyor, a work table, and a robot, as in the above-described electronic component mounting machine, and the head of the robot includes an adhesive discharge means.
[0009]
  When forming dots of adhesive on the surface of the printed circuit board, first, the printed circuit board is conveyed from a loader by a conveyor and positioned at a predetermined position on the work table.
[0010]
  Next, the adhesive discharge means discharges the adhesive for a predetermined discharge period to a predetermined position on the surface of the printed circuit board, and applies this to the surface of the printed circuit board to form dots. When a predetermined number of dots are formed, the dot forming operation by the electronic component bonding dispenser is completed.
[0011]
  By the way, in any of the conventional electronic component mounting machine and the electronic component bonding dispenser, in the following first to fourth cases, the size of the dots formed by the adhesive discharging means is the electronic component. It is once confirmed that the value is appropriate in view of the size of the electronic component. After the confirmation, the electronic component is adhered to the surface of the printed circuit board by the dots, thereby obtaining proper adhesion of the electronic component.
[0012]
  That is, as a first case, when changing an electronic component to be bonded to the surface of the printed circuit board from a small one to a large one or vice versa, the adhesive discharge period in the adhesive discharge means is changed. This is when the discharge amount of the adhesive is changed once to match the above change.
[0013]
  The second case is when the number of times of ejection (number of dots) by the adhesive ejection means reaches a predetermined number (for example, 1000 times).
[0014]
  The third case is when the cassette type adhesive syringe for storing the adhesive supplied to the adhesive discharging means becomes empty and is converted to a new one.
[0015]
  As a fourth case, during the mounting operation of the electronic component or during the dot forming operation, the adhesive discharge by the adhesive discharge means is temporarily stopped, and the viscosity changes, for example, the adhesive is hardened somewhat. When it is considered.
[0016]
  The confirmation that the dot size is an appropriate value has been made as follows.
[0017]
  That is, prior to forming dots at a predetermined position on the surface of the printed circuit board, first, the adhesive is discharged for a predetermined discharge period by the adhesive discharge means to a portion that will not be used in the future on the surface of the printed circuit board. Mold trial dots. Next, the size of the trial dot is measured by a measuring unit such as an image processing apparatus, and the detection signal is fed back to change the ejection period of the adhesive ejecting unit. In this case, since the discharge period is proportional to the discharge amount, that is, proportional to the size of the trial dot, the trial dot is obtained by repeating the feedback and the control of changing the discharge period based on the feedback. Is set to an appropriate value.
[0018]
  Since the size of the trial dot is the same as the size of the dot to be molded on the surface of the printed circuit board after this, if the size of the trial dot is set to an appropriate value as described above, This corresponds to confirming that the dot size is an appropriate value. If the head moves in this state and dots are formed at a predetermined position on the surface of the printed board, the size of the dots becomes an appropriate value.
[0019]
[Problems to be solved by the invention]
  However, as described above, in the conventional technology, the trial dot is formed by using a part that will not be used in the future on the surface of the printed circuit board, and such an unused part is generally a small area. There is a possibility that a sufficient number of trial dots cannot be formed, that is, there is a possibility that confirmation that the dot size is an appropriate value is insufficient.
[0020]
  On the other hand, the measurement of the size of the trial dot by the measurement means is performed by the reflected light of the light irradiated to the trial dot, but since there are various colors and glosses of the adhesive, it is influenced by these. This may cause a large error in the measurement of the size of the trial dots. Therefore, due to this error, there is a problem that it is impossible to accurately confirm that the dot size is an appropriate value.
[0021]
  The present invention has been made paying attention to the above situation, and in the operation of forming dots by applying an adhesive to the surface of a printed circuit board, it is confirmed that the size of the dots is an appropriate value. It is an object to be able to do more accurately.
[0022]
[Means for Solving the Problems]
  An apparatus for optimizing adhesion of an electronic component mounting machine according to the present invention for achieving the above object is as shown in the following claims 1 to 3.
[0023]
  According to the first aspect of the present invention, a head 9 that can be moved to a desired position as viewed from the printed circuit board 3 is provided. The head 9 discharges the adhesive 13 for a certain discharge period, and this is applied to the surface 14 of the printed circuit board 3. In the case where the adhesive discharge means 16 capable of forming the dots 15 by coating is provided, the test dots 39 are formed by applying the adhesive 13 discharged from the adhesive discharge means 16 for a certain discharge period onto the surface 38. An object 40 to be applied is provided separately from the printed circuit board 3,The coated body 40 is in the form of a long band wound in a roll shape, supported by a base 43, and provided with a support shaft 42 for rotatably supporting the coated body 40 about its axis. 43, a take-up shaft 44 is provided which can wind up the coated body 40 from one end of the coated body 40, and the coated body 40 can be wound between the support shaft 42 and the winding shaft 44. A flat support plate 48 that supports the midway portion from the back surface 54 side in a pressure contact manner and is slidable is provided, and the surface 38 of the portion of the object to be coated 40 supported by the support plate 48 is used as a trial dot 39. Is a test dot molding area 49 capable of molding,
[0024]
  The object to be coated 40 is formed of a transparent or translucent sheet material, and illumination means 53 for irradiating light 52 toward the back surface 54 of the portion of the object to be coated 40 is provided. With LEDs,Of the coated body 40Of the above partA measuring means 55 for measuring the size of the trial dots 39 formed on the surface 38 from the surface 38 side of the substrate 40 is provided, and the adhesive 13 in the adhesive discharging means 16 is based on the detection signal of the measuring means 55. Provided with a control device 30 that makes it possible to change the discharge period,
[0025]
  The presence confirmation sensor 56 for detecting that the middle part of the coated body 40 is located on the support plate 48 is provided, and the coated body 40 is appropriately mounted on the support shaft 42. Position detection sensor 57 for detectingIt is a thing.
[0026]
  Claim2The invention of claim1'sIn addition to the invention, when the head 9 includes the television camera 28 for detecting the relative position of the head 9 and the printed board 3, the television camera 28 is also used as the measuring means 55.
[0027]
  In order to achieve the above-mentioned problems, the adhesion optimization device for an electronic component bonding dispenser according to the present invention is as shown in the following claims 4 to 6.
[0028]
  Claim3According to the present invention, a head 9 that can be moved to a desired position as viewed from the printed circuit board 3 is provided. The head 9 discharges the adhesive 13 for a certain discharge period and applies it to the surface 14 of the printed circuit board 3. In the case where the adhesive discharge means 16 capable of forming the dots 15 is provided, the trial dots 39 can be formed by applying the adhesive 13 discharged from the adhesive discharge means 16 for a certain discharge period to the surface 38. An object to be coated 40 is provided separately from the printed board 3,The coated body 40 is in the form of a long band wound in a roll shape, supported by a base 43, and provided with a support shaft 42 for rotatably supporting the coated body 40 about its axis. 43, a take-up shaft 44 is provided which can wind up the coated body 40 from one end of the coated body 40, and the coated body 40 can be wound between the support shaft 42 and the winding shaft 44. A flat support plate that supports the midway part in a pressure-contact manner from the back surface 54 side and slidably. 48, and the surface 38 of the portion of the coated body 40 supported by the support plate 48 is used as a trial dot molding area 49 capable of molding the trial dots 39,
[0029]
  The object to be coated is formed of a transparent or translucent sheet material, and provided with illumination means for irradiating light toward the back surface of the portion of the object to be coated, the illumination means 53 includes a plurality of LEDs,Of the coated body 40Of the above partA measuring means 55 for measuring the size of the trial dots 39 formed on the surface 38 from the surface 38 side of the substrate 40 is provided, and the adhesive 13 in the adhesive discharging means 16 is based on the detection signal of the measuring means 55. Provided with a control device 30 that makes it possible to change the discharge period,
[0030]
  The presence confirmation sensor 56 for detecting that the middle part of the coated body 40 is located on the support plate 48 is provided, and the coated body 40 is appropriately mounted on the support shaft 42. Position detection sensor 57 for detectingIs.
[0031]
  ContractClaim4The invention of claim3In addition to the above invention, when the head 9 includes the television camera 28 for detecting the relative position of the head 9 and the printed circuit board 3, the television camera 28 is also used as the measuring means 55.
[0032]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0033]
  In FIG. 2, reference numeral 1 denotes an electronic component mounting machine, and the mounting machine 1 has a work table 2. A conveyor 4 is provided that takes out the printed circuit boards 3 one by one from a loader (not shown) and conveys the printed circuit boards 3 to a predetermined position of the work table 2.
[0034]
  An industrial robot 5 is supported on the work table 2, and this robot 5 is of a rectangular coordinate type. The robot 5 includes an X-axis rail 7 that extends horizontally in the direction of the arrow X in FIG. 2 and a pair of Ys that extend in the direction of the arrow Y in FIG. The X-axis rail 7 is supported by the Y-axis rails 8 and 8 and is movable in parallel to the Y direction. A head 9 is provided which is supported by the X-axis rail 7 and is movable in the X direction. That is, the head 9 is viewed from the printed circuit board 3 conveyed to the desired position of the work table 2 by the movement of the X-axis rail 7 with respect to each Y-axis rail 8 and the movement of the head 9 with respect to the X-axis rail 7. It can be moved to a desired position in the horizontal direction.
[0035]
  An X-direction drive motor 10 which is a servo motor that enables the head 9 to move to a desired position in the X direction with respect to the X-axis rail 7 is supported by the X-axis rail 7. A Y-direction drive motor 11 that is a servo motor that enables the X-axis rail 7 and the head 9 to move to a desired position in the Y direction is supported on the work table 2.
[0036]
  2 and 3, the head 9 discharges the adhesive 13 for a certain discharge period and applies it to the surface 14 which is the upper surface of the printed circuit board 3 to form a substantially circular dot 15 in plan view. An adhesive discharge means 16 is provided.
[0037]
  The adhesive discharge means 16 has a syringe 19 that is detachably attached to a base 18 of the head 9. The syringe 19 is a cylindrical container whose axial center is vertically oriented, and the inside thereof is filled with an adhesive 13. A movable bracket 20 is supported on the base 18 so as to be movable up and down, and an actuator 21 which is a pneumatic cylinder for moving the movable bracket 20 up and down is provided. A nozzle 22 having a vertical axis is attached to the movable bracket 20, and the upper end of the nozzle 22 is connected to the inside of the lower end of the syringe 19 by a flexible tube 23.
[0038]
  A pressurizing unit 26 that can supply the compressed air 25 is provided inside the upper end of the syringe 19. When the compressed air 25 is supplied into the syringe 19 by the pressurizing means 26, the adhesive 13 in the syringe 19 is pressurized and discharged from the nozzle 22 through the tube 23. The period during which the pressurizing means 26 supplies the compressed air 25 into the syringe 19 (pressurization period) coincides with the discharge period during which the adhesive discharge means 16 discharges the adhesive 13 from the nozzle 22.
[0039]
  During the period other than the pressurizing period by the compressed air 25, the inside of the syringe 19 is slightly negative pressure by the pressurizing means 26, and the adhesive 19 in the syringe 19, the tube 23, and the nozzle 22 flows down by its weight. It is prevented from being discharged in a formula.
[0040]
  A heater 27 for heating the lower end side of the syringe 19 is provided so that the adhesive 13 maintains a substantially constant viscosity. For this reason, if the size (area, diameter, etc.) of each dot 15 formed on the surface 14 of the printed circuit board 3 is the same, the volume and weight of each dot 15 are also the same.
[0041]
  The head 9 includes a television camera 28 attached to the base 18, and the television camera 28 detects the relative position between the printed circuit board 3 and the head 9.
[0042]
  A control device 30 for electronically controlling the mounting machine 1 is provided. The control device 30 includes an axis controller 31, an image processing unit 32, an input / output unit 33, and a main calculation unit 34 that are electrically connected to each other. The shaft controller 31 is electrically connected to the X-direction drive motor 10, the Y-direction drive motor 11, and the position detection sensor of the head 9. The television camera 28 is electrically connected to the image processing unit 32. The actuator 21, the pressurizing unit 26, and the heater 27 are electrically connected to the input / output unit 33.
[0043]
  2 and 3, when electronic components are mounted on the surface 14 of the printed circuit board 3 positioned at a predetermined position of the work table 2, first, the axis control is performed by the television camera 28 and the image processing unit 32. The X direction drive motor 10 and the Y direction drive motor 11 of the robot 5 are controlled via the device 31 and the input / output means 33, and the head 9 is positioned at a predetermined position.
[0044]
  Next, as shown by a one-dot chain line in FIG. 3, the movable bracket 20 is lowered by the operation of the actuator 21 toward a predetermined position on the surface 14 of the printed circuit board 3. When the lower end of the nozzle 22 of the adhesive discharging means 16 descending together with the movable bracket 20 approaches the surface 14 of the printed circuit board 3, the compressed air 25 is supplied into the syringe 19 by the operation of the pressurizing means 26. Thus, the adhesive 13 is discharged from the lower end of the nozzle 22 for a predetermined discharge period, and this is applied to the surface 14 of the printed circuit board 3, thereby forming the dots 15 on the surface 14.
[0045]
  Next, the movable bracket 20 is raised by the operation of the actuator 21 as described above, and accordingly, the adhesive discharging means 16 is raised and returns to the original state shown by the solid line in FIG. Thereafter, by the same control as described above by the control device 30, other dots 15 are formed on the surface 14 of the printed board 3 on the side of the dots 15, and thereafter, this is repeated to form a large number of dots 15. .
[0046]
  On the other hand, the electronic components conveyed by the robot 5 are adhered to the surface 14 of the printed circuit board 3 one after another by the dots 15, whereby the mounting of the electronic components on the surface 14 of the printed circuit board 3 is once completed. Will be.
[0047]
  1, 2, and 4, the mounting machine 1 includes an adhesion optimization device 37. The adhesion optimizing device 37 includes an object to be coated 40 that allows the test dots 39 to be formed by applying the adhesive 13 discharged from the adhesive discharge means 16 for a predetermined discharge period onto the surface 38. The coated body 40 is provided separately from the printed circuit board 3 on the work table 2.
[0048]
  The to-be-coated body 40 is formed of a long transparent or semi-transparent belt-shaped paper material or a resin sheet wound in a roll shape. A support shaft 42 for rotatably supporting the roll-shaped coated body 40 around its axis is provided, and this support shaft 42 is supported by a base 43 of the adhesion optimizing device 37. The work table 2 is supported.
[0049]
  A winding shaft 44 that can wind up the coated body 40 from one end of the roll-shaped coated body 40 is provided, and the winding shaft 44 is also supported by the base 43. A take-up motor 45 as drive means for driving the base 43 is provided, and the take-up shaft 44 is linked to the take-up motor 45 by interlocking means 46.
[0050]
  A midway part of the coated body 40 extends in a substantially horizontal direction from the coated body 40 supported by the support shaft 42 toward the winding shaft 44. A translucent support plate 48 is provided to support the intermediate portion of the coated body 40 from the lower surface side in a slidable manner, and a portion of the coated body 40 located on the upper surface of the supporting plate 48. Is a trial dot molding area 49 in which the trial dots 39 can be molded.
[0051]
  A tensioner 50 is provided to sandwich a part of the middle portion of the coated body 40 from above and below, and this tensioner 50 is linked to the winding motor 45 by linkage means 51.
[0052]
  Moreover, the illumination means 53 which irradiates the light 52 toward the lower surface side of the said support plate 48 is provided, and this illumination means 53 is equipped with many LED. The light 52 by the illumination means 53 is sufficiently diffused when passing through the support plate 48. The diffused light is irradiated toward the back surface 54 side of the coated body 40 in the trial dot forming area 49 and is transmitted through the coated body 40 toward the front surface 38 side.
[0053]
  A measuring means 55 for measuring the size (area) of the trial dots 39 formed on the surface 38 of the coated body 40 from the surface 38 side of the coated body 40 is provided. The measuring means 55 serves as the television camera 28 and the image processing unit 32 of the control device 30.
[0054]
  When the presence confirmation sensor 56 for detecting that the middle part of the coated body 40 is located on the support plate 48 is provided, and when the roll-shaped coated body 40 is mounted on the support shaft 42. A position detection sensor 57 is provided for detecting that the attachment is properly performed.
[0055]
  The winding motor 45, the illumination means 53, the presence confirmation sensor 56 and the position detection sensor 57 are all electrically connected to the input / output means 33 of the control device 30.
[0056]
  Under the control of the control device 30, the adhesive discharge means 16 is the same as the adhesive discharge means 16 forms the dots 15 on the surface 14 of the printed circuit board 3. The trial dot 39 can be formed on the surface 38 in the trial dot molding area 49.
[0057]
  Further, when the measuring device 55 measures the size of the trial dot 39, the control device 30 allows the discharge period of the adhesive 13 by the adhesive discharging means 16 to be changed based on the detection signal. The pressurization period by the pressurizing means 26 is controlled, that is, the discharge period of the adhesive 13 by the adhesive discharge means 16 is controlled.
[0058]
  With reference to FIG. 5, the control of the adhesion optimizing device 37 by the control device 30 will be described. This figure shows a flowchart of the control device 30 for the adhesion optimizing device 37, and (P-1) to (P-8) in the figure show the steps of the program.
[0059]
  As shown in FIG. 3, prior to forming the dots 15 at the desired positions on the surface 14 of the printed circuit board 3, first, as shown in FIG. 1, trial dots 39 are formed on the surface 38 of the object 40 (see FIG. 1). P-2).
[0060]
  Next, the illumination means 53 is turned on (P-3).
[0061]
  Next, the robot 5 is controlled, the head 9 is moved, and the television camera 28 of the measuring means 55 is moved onto the trial dot 39 (P-4).
[0062]
  Next, the size (area) of the trial dot 39 is measured by image processing by the television camera 28 and the image processing unit 32 of the measuring unit 55, and the detection signal is passed through the main calculation unit 34 to be adhesive discharge unit. The pressurizing period is changed by feedback to the sixteen pressurizing means 26, whereby the discharge period of the adhesive 13 by the adhesive discharge means 16 is changed (P-5).
[0063]
  In the above case, since the discharge period by the adhesive discharge means 16 is proportional to the discharge amount, that is, proportional to the size of the trial dot 39, the feedback and the control to change the discharge period based on this feedback. Is repeated, the size of the trial dot 39 is set to an appropriate value.
[0064]
  Since the size of the trial dot 39 corresponds to the size of the dot 15 to be formed on the surface 14 of the printed circuit board 3 thereafter, the size of the trial dot 39 is set appropriately as described above. In terms of value, this corresponds to confirming that the size of the dot 15 is an appropriate value.
[0065]
  Next, it is determined whether or not the surface 38 of the coated body 40 in the trial dot forming area 49 is filled with the trial dots 39 (P-6). If not full, the process returns to (P-1) (P-7).
[0066]
  If it is determined in the above (P-6) that it is full, the take-up motor 45 is driven so that the middle part of the coated body 40 slides on the support plate 48 toward the take-up shaft 44. The to-be-coated body 40 in which the trial dots 39 are not molded is defined as the trial dot molding area 49 (P-8).
[0067]
  According to the above configuration, since the coated body 40 for forming the trial dots 39 is provided separately from the printed circuit board 3, the trial dots 39 are formed on the surface 38 of the coated body 40 having a sufficient area. A sufficiently large number can be formed.
[0068]
  Therefore, each time the trial dot 39 is formed, its size is measured and its detection signal is fed back, whereby the ejection period by the adhesive ejection means 16 is changed, so that the size of the trial dot 39 is obtained. Can be sufficiently repeated to bring the trial dot 39 close to the desired value, and the size of the trial dot 39 can be set to an appropriate value with high accuracy.
[0069]
  In addition, as described above, the object to be coated 40 is formed of a transparent or translucent sheet material, and the illumination means 53 for irradiating the light 52 toward the back surface 54 side of the object to be coated 40 is provided. When the measuring unit 55 measures the size of 39, the measuring unit 55 performs measurement while recognizing the shadow of the trial dot 39 irradiated from the back surface 54 side of the coated body 40.
[0070]
  Therefore, this measurement can be performed without being affected by the color and gloss of the adhesive 13, and an error can be prevented from occurring in the measurement.
[0071]
  Although the above is based on the illustrated example, the measurement of the size of the trial dot 39 by the measuring means 55 may be to measure the size or diameter around the trial dot 39. Further, the support plate 48 may be a transparent body or may not be provided as long as the substrate 40 is translucent and can diffuse the light 52.
[0072]
  Although the mounting machine 1 has been described above, the above-described components may be applied to an electronic component bonding dispenser instead.
[0073]
  In this case, the dispenser includes a loader, a work table 2, a conveyor 4, and a robot 5 as in the mounting machine 1, and the head 9 of the robot 5 includes an adhesive discharge means 16, and further includes a control unit. A device 30 and an adhesion optimization device 37 are provided.
[0074]
  The action caused by the configuration of the dispenser is the same as that of the mounting machine 1 except for the action related to the mounting work in which the mounting machine 1 adheres the electronic component to the surface 14 of the printed circuit board 3 by the adhesive 13. It is. In consideration of this point, the dispenser corresponds to that indicated by reference numeral 1 in the figure as in the mounting machine 1.
[0075]
【The invention's effect】
  The effects of the adhesion optimization device for the electronic component mounting machine according to the present invention are as shown in the following claims 1 to 3.
[0076]
  According to the first aspect of the present invention, a head that can be moved to a desired position as viewed from the printed circuit board is provided. In an electronic component mounting machine equipped with an adhesive discharge means that enables the above-mentioned printed material to be coated on the surface by applying the adhesive discharged from the adhesive discharge means for a certain discharge period so that trial dots can be formed Provided separately from the substrate,The coated body is in the form of a long band wound in a roll shape, supported by a base, and provided with a support shaft that rotatably supports the coated body about its axis, and is supported by the base. A winding shaft that enables winding of the coated body from one end of the coated body is provided, and a midway part of the coated body between the support shaft and the winding shaft is pressed from the back surface side. In addition, a flat support plate is provided for slidably supporting, and the surface of the part to be coated supported by the support plate is used as a trial dot molding area where trial dots can be molded,
[0077]
  The object to be coated is formed of a transparent or translucent sheet material, provided with illumination means for irradiating light toward the back surface of the portion of the object to be coated, the illumination means includes a plurality of LEDs,Of the coated bodyOf the above partA control means for measuring the size of the trial dot formed on the surface from the surface side of the coated body, and a control for changing the adhesive discharge period in the adhesive discharge means based on the detection signal of the measurement means Equipment is provided,
[0078]
  A position for detecting that the middle part of the coated body is located on the support plate, and a position for detecting that the coated body is properly mounted on the support shaft. Provide detection sensorIt is.
[0079]
  For this reason, it is possible to form a sufficient number of trial dots on the surface of the coated body that is provided separately from the printed circuit board and has a sufficient area.
[0080]
  Therefore, each time the trial dot is formed, its size is measured and its detection signal is fed back, thereby changing the ejection period by the adhesive ejection means, so that the size of the trial dot is set to a desired value. As a result, it is possible to make a sufficient number of repetitions of the control to bring the sample dots closer to, so that the size of the trial dots can be set to an appropriate value with high accuracy. That is, since the size of the trial dot coincides with the size of the dot to be formed on the surface of the printed circuit board subsequently, as described above, the size of the trial dot is set to be accurate. By setting a good appropriate value, it is possible to accurately confirm that the size of the dot is an appropriate value.
[0081]
  Also, as mentioned above,The coated body is formed with a transparent or translucent sheet material, and the coated bodyOf the above partIllumination means for irradiating light toward the back surface is provided.
[0082]
  For this reason, when the measuring means measures the size of the trial dots, this measuring means measures while recognizing the shadow of the trial dots irradiated from the back side of the coated body, It is possible without being affected by the color and gloss of the agent.
[0083]
  Therefore, it is possible to prevent an error from occurring in the measurement, and as a result, it is possible to accurately confirm that the dot size is an appropriate value.
[0084]
  Claim2According to the present invention, in the electronic component mounting machine in which the head includes a television camera for detecting the relative position of the head and the printed board, the television camera is also used as a measuring unit.
[0085]
  For this reason, since it is not necessary to provide a separate measuring means for measuring the size of the trial dots, the configuration of the adhesion optimization device of the electronic component mounting machine becomes simple, and accordingly, the control and the like are easy to control. Become.
[0086]
  The effect of the adhesion optimization device of the dispenser for adhering electronic components according to the present invention is as follows.3, 4It is as shown by.
[0087]
  Claim3According to the present invention, a head that can be moved to a desired position as viewed from the printed circuit board is provided, and this head discharges an adhesive for a certain discharge period and applies it to the surface of the printed circuit board to enable dot formation. In the electronic component bonding dispenser provided with the adhesive discharging means, the substrate to be coated with which the test dots can be formed by applying the adhesive discharged from the adhesive discharging means for a certain discharge period on the surface and the printed board. Separately,The coated body is in the form of a long band wound in a roll shape, supported by a base, and provided with a support shaft that rotatably supports the coated body about its axis, and is supported by the base. A winding shaft that enables winding of the coated body from one end of the coated body is provided, and a midway part of the coated body between the support shaft and the winding shaft is pressed from the back surface side. In addition, a flat support plate is provided for slidably supporting, and the surface of the part to be coated supported by the support plate is used as a trial dot molding area where trial dots can be molded,
[0088]
  The object to be coated is formed of a transparent or translucent sheet material, provided with illumination means for irradiating light toward the back surface of the portion of the object to be coated, the illumination means includes a plurality of LEDs,Of the coated bodyOf the above partA control means for measuring the size of the trial dot formed on the surface from the surface side of the coated body, and a control for changing the adhesive discharge period in the adhesive discharge means based on the detection signal of the measurement means Equipment is provided,
[0089]
  A position detection sensor for detecting that the middle part of the coated body is located on the support plate and detecting that the coated body is properly mounted on the support shaft. Provide a sensorIt is.
[0090]
  For this reason, it is possible to form a sufficient number of trial dots on the surface of the coated body that is provided separately from the printed circuit board and has a sufficient area.
[0091]
  Therefore, each time the trial dot is formed, its size is measured and its detection signal is fed back, thereby changing the ejection period by the adhesive ejection means, so that the size of the trial dot is set to a desired value. As a result, it is possible to make a sufficient number of repetitions of the control to bring the sample dots closer to, so that the size of the trial dots can be set to an appropriate value with high accuracy. That is, since the size of the trial dot coincides with the size of the dot to be formed on the surface of the printed circuit board subsequently, as described above, the size of the trial dot is set to be accurate. By setting a good appropriate value, it is possible to accurately confirm that the size of the dot is an appropriate value.
[0092]
  Also, as mentioned above,The coated body is formed with a transparent or translucent sheet material, and the coated bodyOf the above partIllumination means for irradiating light toward the back surface is provided.
[0093]
  For this reason, when the measuring means measures the size of the trial dots, this measuring means measures while recognizing the shadow of the trial dots irradiated from the back side of the coated body, It is possible without being affected by the color and gloss of the agent.
[0094]
  Therefore, it is possible to prevent an error from occurring in the measurement, and as a result, it is possible to accurately confirm that the dot size is an appropriate value.
[0095]
  Claim4According to the invention, in the electronic component bonding dispenser in which the head includes a television camera for detecting the relative position of the head and the printed board, the television camera is also used as a measuring means.
[0096]
  For this reason, the configuration of the adhesion optimizing device for the electronic component bonding dispenser is simplified because it is not necessary to provide a separate measuring means for measuring the size of the trial dots. It becomes easy.
[Brief description of the drawings]
FIG. 1 is a front view when trial dots are formed on the surface of an object to be coated.
FIG. 2 is an overall plan view when dots are formed on the surface of a printed circuit board.
FIG. 3 is a front view when dots are formed on the surface of the printed circuit board.
FIG. 4 is a perspective view of an adhesion optimization device.
FIG. 5 is a flowchart of the control device.
[Explanation of symbols]
  1 Mounting machine (dispenser)
  2 Worktable
  3 Printed circuit board
  4 conveyor
  5 Robot
  9 heads
  13 Adhesive
  14 Surface
  15 dots
  16 Adhesive discharging means
  26 Pressurizing means
  28 TV camera
  30 Control device
  37 Adhesive optimization device
  38 surface
  39 Trial dots
  40 Object
  42  Spindle
  43  Base
  44  Winding shaft
  48 Support plate
  49  Trial dot molding area
  52 light
  53 Illumination means
  54 Back
  55 Measuring means
  56  Presence sensor
  57  Position detection sensor

Claims (4)

Adhesive discharge means provided with a head that can be moved to a desired position as viewed from the printed circuit board, and this head discharges the adhesive for a certain discharge period and applies it to the surface of the printed circuit board to form dots. In the electronic component mounting machine equipped with
A substrate to be coated is formed separately from the printed circuit board so that a trial dot can be formed by applying an adhesive discharged from the adhesive discharging means for a certain discharge period on the surface, and the substrate to be coated is wound in a roll shape. A long belt-like shape, supported by a base, and provided with a support shaft that rotatably supports the object to be coated around its axis, and supported by the base, from one end of the object to be coated. A winding shaft that enables the body to be wound is provided, and a flat portion that supports the middle part of the coated body between the support shaft and the winding shaft in a press-contacting manner and slidably from the back side. A support plate is provided, and the surface of the part to be coated supported by the support plate is used as a trial dot molding area capable of forming trial dots,
The object to be coated is formed of a transparent or translucent sheet material, and illumination means for irradiating light toward the back surface of the portion of the object to be coated is provided, the illumination means includes a plurality of LEDs, and the object to be coated is provided. A measuring means for measuring the size of the trial dot formed on the surface of the portion of the coated body from the surface side of the coated body is provided, and the adhesive discharge in the adhesive discharging means based on the detection signal of the measuring means Provide a control device that can change the period ,
A position detection sensor for detecting that the middle part of the coated body is located on the support plate and detecting that the coated body is properly mounted on the support shaft. Adhesion optimization device for electronic component mounting machines with sensors . In an electronic component mounting machine equipped with a television camera that detects the relative position of the head and the printed circuit board,
2. The apparatus for optimizing adhesion of an electronic component mounting machine according to claim 1, wherein the television camera is also used as a measuring means. Adhesive discharge means provided with a head that can be moved to a desired position as viewed from the printed circuit board, and this head discharges the adhesive for a certain discharge period and applies it to the surface of the printed circuit board to form dots. In an electronic component bonding dispenser comprising:
A substrate to be coated is formed separately from the printed circuit board so that a trial dot can be formed by applying an adhesive discharged from the adhesive discharging means for a certain discharge period on the surface, and the substrate to be coated is wound in a roll shape. A long belt-like shape, supported by a base, and provided with a support shaft that rotatably supports the object to be coated around its axis, and supported by the base, from one end of the object to be coated. A winding shaft that enables the body to be wound is provided, and a flat portion that supports the middle part of the coated body between the support shaft and the winding shaft in a press-contacting manner and slidably from the back side. A support plate is provided, and the surface of the part to be coated supported by the support plate is used as a trial dot molding area capable of forming trial dots,
The object to be coated is formed of a transparent or translucent sheet material, and illumination means for irradiating light toward the back surface of the portion of the object to be coated is provided, the illumination means includes a plurality of LEDs, and the object to be coated is provided. A measuring means for measuring the size of the trial dot formed on the surface of the portion of the coated body from the surface side of the coated body is provided, and the adhesive discharge in the adhesive discharging means based on the detection signal of the measuring means Provide a control device that can change the period ,
A position detection sensor for detecting that the middle part of the coated body is located on the support plate and detecting that the coated body is properly mounted on the support shaft. Adhesive optimization device for electronic component bonding dispenser with sensor . In a dispenser for adhering electronic components, the head includes a television camera that detects the relative position of the head and the printed circuit board.
4. The apparatus for optimizing bonding of an electronic component bonding dispenser according to claim 3 , wherein the television camera is also used as a measuring means.

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