JP2022071341A - Component mounting device - Google Patents

Abstract

To provide a component mounting device which can mount a component with high accuracy by recognizing a component mounting through hole (substrate hole) provided on a substrate clearly and correctly.SOLUTION: The component mounting device includes: a substrate conveyance unit 12 which supports and conveys both end parts of a substrate KB in the width direction by a pair of conveyors 12a to position the substrate KB at a predetermined work position; a base table 22 installed beneath the substrate conveyance unit 12; a light source 31 installed beneath the substrate conveyance unit 12 to emit light; and a light diffusion unit 32 provided on the top face of the base table 22 to diffuse the light emitted from the light source 31 to irradiate the bottom face of the substrate KB positioned at the work position. The light diffusion unit 32 includes: a diffuser 41 which transmits or reflects the light emitted from the light source 31 to diffuse the light; and a support 42 provided on the top face of the base table 22 to support the diffuser 41 in a state capable of changing a posture.SELECTED DRAWING: Figure 13

Description

The present invention relates to a component mounting device that mounts components on a substrate that is transported by a substrate transport unit and positioned at a working position.

Conventionally, there is known a component mounting device that mounts components on a substrate that is transported by a substrate transport unit and positioned at a work position. In such a component mounting device, a component insertion machine that inserts a lead extending downward from a component into a substrate and mounts the LED (for example, Patent Document 1 below), and the accuracy of the mounting position is extremely strictly controlled. There is known a type of LED mounting device for mounting LED parts in a state where the parts are mounted by targeting a through hole (board hole) provided in the board.

As described above, in a component mounting device of a type in which components are mounted by targeting a board hole provided in the board, the board hole is visually recognized (imaged) by a camera provided movable above the board and the board is mounted. Recognize the position of the hole. In this case, the camera captures the substrate hole while illuminating the surface of the substrate with a light source attached to the camera, but depending on the color of the substrate of the member on the lower surface side of the substrate, the brightness inside the substrate hole and the surface of the substrate may be affected. The difference from the brightness (that is, the contrast) becomes small, and it may be difficult to clearly recognize the outline of the substrate hole. In such a case, the substrate is illuminated from the lower surface side with a light source installed below the substrate (below the substrate transport portion) so that the inside of the substrate hole becomes brighter than the surface of the substrate when viewed from the camera. , It is possible to recognize the contour of the substrate hole with high contrast.

JP-A-2017-157689

However, when the light source is provided below the substrate transport path, the light source is fixed, and the amount of light reaching the substrate hole differs depending on the position from the light source. For this reason, there is a problem that the brightness inside the substrate hole as seen from the camera differs depending on the position of the substrate hole and is not uniform, and the substrate hole cannot be recognized accurately.

Therefore, an object of the present invention is to provide a component mounting device capable of clearly and accurately recognizing through holes (board holes) for mounting components provided on a substrate and mounting components with high accuracy.

The component mounting device of the present invention is installed below the board transport section and the board transport section, which supports and transports both ends of the board in the width direction by a pair of conveyors and positions the board at a predetermined work position. A table member, a light source installed below the substrate transport portion to emit light, and a light source provided on the upper surface of the table member to diffuse the light emitted from the light source and positioned at the working position. The light diffusing portion includes a light diffusing portion that irradiates the lower surface of the substrate, and the light diffusing portion is provided with a diffusing plate that transmits or reflects light emitted from the light source and diffuses the light, and is provided on the upper surface of the table member to diffuse the light. It is equipped with a support part that supports the board so that the posture can be changed.

According to the present invention, it is possible to clearly and accurately recognize through holes (board holes) for mounting components provided on a substrate and mount components with high accuracy.

Top view of the component mounting device according to the embodiment of the present invention. Enlarged perspective view of a part of the component mounting device according to the embodiment of the present invention. A perspective view showing a lighting unit included in a component mounting device according to an embodiment of the present invention together with a lower receiving unit. An exploded perspective view of a first light diffusing unit included in the lighting unit according to the embodiment of the present invention. Top view of the diffusion plate provided in the first light diffusion unit according to the embodiment of the present invention. (A) (b) Perspective view of the first light diffusing unit according to the embodiment of the present invention. (A) (b) (c) The figure which shows the relationship between the position of the insertion hole through which the pin-shaped member is inserted into the diffuser plate of the 1st light diffusion part in one Embodiment of this invention, and the posture of a diffuser plate. Side sectional view of the diffusion plate showing the relationship between the longitudinal dimension of the elongated hole provided in the diffusion plate of the first diffusion portion in one embodiment of the present invention and the inclination angle of the diffusion plate. A perspective view of a second light diffusing unit included in the lighting unit according to the embodiment of the present invention. An exploded perspective view of a second light diffusing unit according to an embodiment of the present invention. (A) (b) Perspective view of the second light diffusing unit according to the embodiment of the present invention. The figure which shows the modification of the 2nd light diffusing part in one Embodiment of this invention. A side view of a part of a component mounting device showing an example of a light irradiation state by a lighting unit according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a component mounting device 1 according to the first embodiment of the present invention. The component mounting device 1 is a device that repeatedly executes the component mounting work of mounting the component BH on the board KB, and includes a base 11, a board transport section 12, a lower receiving section 13, a component supply section 14, a head moving mechanism 15, and mounting. It includes a head 16, a component recognition camera 17, a board recognition camera 18, and an illumination unit 19. In the present embodiment, for convenience of explanation, the left-right direction of the base 11 seen from the worker OP is the X direction, and the front-back direction of the base 11 seen from the worker OP is the Y direction. Further, the vertical direction is the Z direction.

In FIGS. 1 and 2, the substrate transport unit 12 includes a pair of conveyors 12a extending in the X direction. The board transport section 12 supports and transports both ends of the board KB supplied from the outside in the width direction by a pair of conveyors 12a (arrow A shown in FIG. 1), and is defined near the center of the base 11. Position the board KB in a predetermined working position.

In FIGS. 1 and 2, the lower receiving portion 13 is provided below the substrate transport portion 12. The lower receiving portion 13 is a mechanism portion that lifts and supports the substrate KB positioned at the working position by the substrate transport portion 12 from below, and is a lifting cylinder 21, a base table 22 that is lifted and lowered by the lifting cylinder 21, and a base table 22. It is provided with a plurality of lower receiving pins 23 erected in.

In FIG. 3, a large number of lower receiving pin insertion holes 22H opened upward are arranged in a matrix on the upper surface of the base table 22. An insertion protrusion 23T extends downward from the bottom surface of the lower support pin 23, and by inserting the insertion protrusion 23T into the lower support pin insertion hole 22H provided in the base table 22 from above, the lower support pin 23 Can be attached to the base table 22.

In FIG. 1, the parts supply unit 14 includes a plurality of parts feeders 14a. Each part feeder 14a has a component supply port 14K on the board transport portion 12 side, and component BH is continuously supplied to the component supply port 14K. In the present embodiment, the component BH supplied by the component supply unit 14 is a lead component having a lead RD extending downward, and a plurality of through holes for inserting the lead RD of the component BH into the substrate KB ( A substrate hole KH) is provided (FIG. 2).

In FIGS. 1 and 2, the head moving mechanism 15 includes a fixed beam 15A extending in the Y direction on the base 11 and a moving beam 15B extending in the X direction and having one end supported by the fixed beam 15A. The mounting head 16 is attached to the moving beam 15B. The head moving mechanism 15 moves the moving beam 15B in the Y direction with respect to the fixed beam 15A, and moves the mounting head 16 along the moving beam 15B to move the mounting head 16 in a horizontal plane (in the XY plane). Move it.

In FIG. 2, the mounting head 16 includes a plurality of nozzles 16N extending downward. The mounting head 16 can raise and lower the nozzle 16N and rotate it around the vertical axis, and can attract the component BH supplied by the component supply unit 14 to the lower end of the nozzle 16N. The mounting head 16 picks up the component BH supplied by the component supply unit 14 by moving the nozzle 16N up and down and rotating, and sucking and releasing the component BH by the nozzle 16N while moving by the operation of the head moving mechanism 15. Then, it is mounted on the board KB.

In FIG. 1, the component recognition camera 17 is provided in the area between the board transport section 12 and the component supply section 14 on the base 11. The component recognition camera 17 has the image pickup optical axis directed upward, and when the mounting head 16 having the component BH adsorbed on the lower end of the nozzle 16N passes above, the component BH is imaged from below. The image of the component BH obtained by imaging the component recognition camera 17 is used for recognizing the lead RD of the component BH and the like.

In FIGS. 1 and 2, the substrate recognition camera 18 is attached to the mounting head 16 and moves inward in the XY plane together with the mounting head 16. The substrate recognition camera 18 has the image pickup optical axis directed downward, and images the substrate KB positioned at the working position by the substrate transport unit 12 from above. The image of the substrate KB obtained by the image pickup of the substrate recognition camera 18 is used for recognition of the substrate KB and the like.

The board recognition camera 18 also takes an image of the board KB from above when the component BH is mounted on the board KB by the mounting head 16. The image obtained at this time is used for recognizing the substrate hole KH provided in the substrate KB.

In FIG. 3, the lighting unit 19 is attached to the base table 22 of the lower receiving unit 13. The illumination unit 19 includes a light source 31 and two types of light diffusion units 32 (first light diffusion unit 32A and second light diffusion unit 32B). The light source 31 emits light, and the light diffusing unit 32 diffuses the light emitted by the light source 31 and irradiates the lower surface of the substrate KB with a uniform amount of light. The details of the configuration of the lighting unit 19 will be described later.

When the component mounting device 1 performs the component mounting work, first, the board KB sent from the device on the upstream side of the component mounting device 1 is received by the board transport unit 12, transported, and positioned at the work position. After positioning the board KB, the elevating cylinder 21 is operated to raise the base table 22, and the board KB is pushed up by a plurality of lower receiving pins 23 provided on the base table 22. As a result, both ends of the substrate KB are pressed from below against the substrate holding member 12T (FIGS. 1 and 2) installed above the pair of conveyors 12a and clamped.

As described above, in the present embodiment, the lower receiving pin 23 has a function of abutting the upper end against the lower surface of the substrate KB positioned at the working position to undertake the substrate KB. Further, the base table 22 functions as a table member for holding such a bottom receiving pin 23.

When the substrate KB is pushed up by the lower receiving portion 13 and clamped, the mounting head 16 moves above the component supply unit 14 and sucks (picks up) the component BH supplied by the component supply unit 14 to the nozzle 16N. Then, it moves above the substrate KB by a path passing above the component recognition camera 17. When the mounting head 16 passes above the component recognition camera 17, the component recognition camera 17 acquires an image of the component BH attracted to the nozzle 16N. The component BH is recognized based on this image, and the position of the lead RD is detected.

After the mounting head 16 moves above the board KB, the mounting head 16 moves to a position where the board hole KH of the component BH on which the board recognition camera 18 is mounted can be imaged. At this time, the lighting unit 19 emits light from the light source 31. Since this light is diffused by the light diffusing unit 32 and the lower surface of the substrate KB is irradiated with a uniform amount of light (brightness), the substrate recognition camera 18 can clearly and accurately recognize the substrate hole KH.

When the substrate recognition camera 18 recognizes the substrate hole KH, the position of the lead RD detected through the imaging of the component BH by the component recognition camera 17 and the position of the substrate hole KH recognized by the imaging of the substrate KB by the substrate recognition camera 18 The mounting head 16 moves so as to match. Then, the position of the nozzle 16N is adjusted so that the lead RD is inserted into the substrate hole KH, the nozzle 16N is lowered, and the component BH is mounted on the substrate KB. When all the component BHs to be mounted on the board KB are mounted in this way, the board transfer unit 12 operates to transport the board KB, and the board KB is carried out to a device on the downstream side (for example, an inspection device). This completes the component mounting work per board KB.

Next, the lighting unit 19 included in the component mounting device 1 will be described. As described above, the illumination unit 19 is attached to the upper surface of the base table 22 of the lower receiving unit 13, and has a light source 31 and two types of light diffusing units 32 (first light diffusing unit 32A and second light diffusing unit 32B). (Fig. 3). An insertion protrusion (not shown) protruding downward is provided on the lower surface of the light source 31, and the insertion protrusion is inserted into the lower receiving pin insertion hole 22H of the base table 22 so as to be attached to the base table 22. There is.

In FIG. 3, the first light diffusing portion 32A and the second light diffusing portion 32B are detachably attached to the upper surface of the base table 22 of the lower receiving portion 13, respectively. Both the first light diffusing unit 32A and the second light diffusing unit 32B support the diffusing plate 41 that transmits or reflects the light emitted from the light source 31 and diffuses it, and the diffusing plate 41 in a state in which the posture can be changed. The support portion 42 is provided.

First, the first light diffusing unit 32A will be described. In FIG. 4, the diffuser plate 41 of the first light diffuser 32A has a rectangular shape, and the support portion 42 is composed of a pair of pin-shaped members 50 detachably attached to the upper surface of the base table 22. ..

In FIGS. 4 and 5, the diffusion plate 41 is formed with a plurality of insertion holes SH penetrating the diffusion plate 41 in the thickness direction at both ends in the long side direction. In these plurality of insertion holes SH, two insertion holes SH located on the same axis extending in the long side direction of the diffusion plate 41 form a set (a pair of insertion holes SH), and in the present embodiment, they are formed. Three sets of insertion holes SH are formed side by side in the short side direction of the diffusion plate 41. One of these three sets of insertion holes SH is provided on an axis (referred to as "reference axis J0") extending in the long side direction through the center of gravity GV of the diffusion plate 41.

In FIGS. 4 and 5, one of the two sets of insertion holes SH that are not located on the reference axis J0 is on the axis (referred to as “first offset axis J1”) offset by a certain distance ΔF1 from the reference axis J0. The other set is provided on an axis (referred to as "second offset axis J2") offset by a distance ΔF2 larger than the first offset axis J1. Hereinafter, among the plurality of sets of insertion holes SH provided in the diffusion plate 41 of the first light diffusion unit 32A, the pair of insertion holes SH provided on the reference axis J0, which is the axis passing through the center of gravity GV of the diffusion plate 41, is referred to as “reference”. It is referred to as "insertion hole SH0". Further, among the plurality of sets of insertion holes SH provided in the diffusion plate 41 of the first light diffusion unit 32A, the insertion holes SH other than the reference insertion hole SH0 are referred to as “offset insertion holes”. The pair of insertion holes SH located on the first offset axis J1 is referred to as "first offset insertion hole SH1", and the pair of insertion holes SH located on the second offset axis J2 is referred to as "second offset insertion hole SH2". ".

In FIG. 4, each of the pair of pin-shaped members 50 has a base portion 51, an intermediate portion 52, and an insertion portion 53, respectively. A protrusion 54 projecting downward is provided on the lower surface of the base 51. The intermediate portion 52 extends upward from the upper surface of the base portion 51. The insertion portion 53 extends upward from the upper end of the intermediate portion 52, and its outer diameter is smaller than the outer diameter of the intermediate portion 52 (for this reason, the boundary between the intermediate portion 52 and the insertion portion 53 is shown in FIG. The step portion 55 shown is formed). The pin-shaped member 50 can be attached to the base table 22 by inserting the protrusion 54 into the lower receiving pin insertion hole 22H provided in the base table 22 from above.

In FIG. 5, the reference insertion hole SH0 has a perfect circular shape. The first offset insertion hole SH1 and the second offset insertion hole SH2 each have a long hole shape that is long in the direction along the short side of the diffusion plate 41 (the direction orthogonal to the reference axis J0). The dimension in the longitudinal direction of the elongated hole of the second offset insertion hole SH2 (the length in the short side direction of the diffusion plate 41) is larger than the dimension in the longitudinal direction of the elongated hole of the first offset insertion hole SH1. .. The dimensions in the width direction (dimensions in the long side direction of the diffusion plate 41) of the reference insertion hole SH0, the first offset insertion hole SH1 and the second offset insertion hole SH2 are the same, and the outside of the insertion portion 53 of the pin-shaped member 50. The size is larger than the diameter and smaller than the outer diameter of the intermediate portion 52.

When the diffusion plate 41 is supported by the pair of pin-shaped members 50, any one of the above three sets of insertion holes SH (reference insertion hole SH0, first offset insertion hole SH1 and second offset insertion hole SH2). Is inserted through the insertion portion 53 of the pair of pin-shaped members 50 (FIGS. 6A and 6B). As a result, the edge of the insertion hole SH into which the pin-shaped member 50 is inserted comes into contact with the stepped portion 55 of the pin-shaped member 50 from above, and the entire diffusion plate 41 is supported by the pair of pin-shaped members 50.

In the diffusion plate 41, when the pair of reference insertion holes SH0 are inserted through the pair of pin-shaped members 50 (FIG. 6A), the center of gravity GV of the diffusion plate 41 is located between the pair of pin-shaped members 50. Therefore, the diffuser plate 41 is in a horizontal posture (FIG. 7A). On the other hand, in the diffusion plate 41, when the pair of first offset insertion holes SH1 are inserted into the pair of pin-shaped members 50 (FIGS. 6 (b) and 7 (b)), the pair of second offset insertion holes are inserted. When the hole SH2 is inserted through the pair of pin-shaped members 50 (FIG. 7 (c)), the center of gravity GV of the diffuser plate 41 is not located between the pair of pin-shaped members 50, so that the diffuser plate 41 is the center of gravity GV. The posture is tilted from the horizontal posture in the direction in which the position of is lowered. In FIGS. 7A, 7B, and 7C, the left side view is a plan view of the diffusion plate 41 (however, the middle portion in the long side direction is omitted), and the right side figure is an arrow in the left side figure. It is a partial cross-sectional view seen from the visual view VV (however, the whole figure is rotated 90 degrees clockwise).

When the diffusion plate 41 is tilted from the horizontal posture by inserting the first offset insertion hole SH1 into the pin-shaped member 50, as shown in FIG. 8, the longitudinal length of the elongated hole constituting the first offset insertion hole SH1. When the edge portions E1 and E2 in the direction (direction along the short side direction of the diffusion plate 41) come into contact with the outer peripheral surface of the insertion portion 53 of the pin-shaped member 50, the diffusion plate 41 is restricted from being further tilted. .. Therefore, the inclination angle Θ (FIG. 8) of the diffusion plate 41 from the horizontal posture can be adjusted by the dimension in the longitudinal direction of the elongated hole of the first offset insertion hole SH1. Specifically, the smaller the dimension R (FIG. 8) in the longitudinal direction of the elongated hole (that is, the closer the shape of the elongated hole is to a perfect circle), the smaller the inclination of the diffuser plate 41 from the horizontal posture (the smaller the inclination angle Θ). )can do. This also applies when the second offset insertion hole SH2 is inserted into the pin-shaped member 50, and the second offset insertion is performed by adjusting the lengthwise dimension of the elongated hole constituting the second offset insertion hole SH2. The tilt angle of the diffuser plate 41 from the horizontal posture when the hole SH2 is inserted through the pin-shaped member 50 can be adjusted.

As described above, in the present embodiment, the support portion 42 of the first light diffusing portion 32A is composed of a pair of pin-shaped members 50 extending upward, and the diffusing plate 41 is selectively inserted into the pair of pin-shaped members 50. By having a plurality of sets of a pair of insertion hole SHs and switching between a plurality of sets (here, 3 sets) of the pair of insertion hole SHs to be inserted into the pair of pin-shaped members 50 (that is, a plurality of sets). It is possible to change the posture of the diffusion plate 41 depending on which of the set of insertion holes SH the pair of pin-shaped members 50 is inserted into. Since one of the plurality of sets of insertion holes SH is provided on the axis (reference axis J0) passing through the center of gravity GV of the diffuser plate 41, it takes a horizontal posture as one of the postures of the diffuser plate 41. It is possible to do so (FIGS. 6 (a) and 7 (a)).

When the offset insertion hole is supported by the pair of pin-shaped members 50, the diffusion plate 41 is tilted from the horizontal posture because the center of gravity GV of the diffusion plate 41 is supported by the pair of pin-shaped members 50. This is because it is not on the axis connecting the two (offset), and the diffusion plate 41 can be tilted from the horizontal posture even if the shape of the offset insertion hole does not have the elongated hole shape. Therefore, it is not essential that the shape of the offset insertion hole has a long hole shape that is long in the direction along the short side of the diffusion plate 41 (the direction orthogonal to the reference axis J0).

Next, the second light diffusing unit 32B will be described. In FIGS. 9 and 10, the diffuser plate 41 of the second light diffuser 32B has a rectangular shape. As shown in FIG. 10, the support portion 42 includes a pair of brackets 61, a pair of rotating support walls 62, and a connecting portion 63.

In FIG. 10, the pair of brackets 61 are attached to both ends of the diffusion plate 41 in the long side direction by fixing screws 61S. Each bracket 61 is provided with a protrusion 61T that protrudes outward, and when the pair of brackets 61 is attached to the diffuser plate 41, the pair of protrusions 61T is oriented in the long side direction of the diffuser plate 41. It extends outward along the rotation axis JX extending along the axis. The pair of rotation support walls 62 are located facing outward in the long side direction of the diffusion plate 41, and the diffusion plate is formed by passing the protrusion 61T of the bracket 61 through the through holes 62H provided in each of the pair of rotation support walls 62. The 41 is rotatably supported around the rotation axis JX. The connecting portion 63 connects the pair of rotating support walls 62 below the diffusion plate 41.

As described above, in the second light diffusing unit 32B, the support unit 42 is configured to rotatably support the diffusing plate 41 around a predetermined rotation axis JX. Therefore, in the second light diffusing unit 32B, the support unit 42 has a configuration. The posture of the diffuser plate 41 can be changed by rotating the diffuser plate 41 around the rotation axis JX. The rotation axis JX is preferably an axis extending through the center of gravity GV of the diffusion plate 41. When the rotation axis JX passes through the center of gravity GV of the diffusion plate 41, it becomes easy to maintain the attitude of the diffusion plate 41 regardless of the attitude of the diffusion plate 41.

The second light diffusing portion 32B is easy to handle because the diffusing plate 41, the pair of rotating support walls 62, and the connecting portion 63 form one unit. As shown in FIGS. 9 and 10, the connecting portion 63 is provided with a plurality of protruding portions 64 projecting downward thereof (may be provided on each of the pair of rotating support walls 62). By inserting these plurality of protrusions 64 into the lower receiving pin insertion holes 22H provided in the base table 22, the second light diffusing portion 32B as a unit can be detachably attached to the base table 22.

As shown in FIGS. 9 and 10, a posture adjusting member 65 is attached to one of the pair of protrusions 61T penetrating the through holes 62H of each of the pair of rotation support walls 62. Therefore, the worker OP can rotate the diffuser plate 41 around the rotation axis JX by pinching the posture adjusting member 65 with his fingers and twisting it, and can change the posture of the diffuser plate 41 (FIG. 11). (A), (b)). The diffusion plate 41 can be rotated around the rotation axis JX by directly operating it. Therefore, the posture adjusting member 65 is not an essential component and may not be provided.

The second light diffusing portion 32B may have a configuration in which the light source 31 is attached to the upper surface of the connecting portion 63 as in the modified example shown in FIG. The second light diffusing unit 32B according to such a modification is useful when a light source 31 is also desired to be installed at a position on the base table 22 where the second light diffusing unit 32B is to be installed.

FIG. 13 is a side view of the illumination unit 19 located below the substrate KB positioned by the substrate transport unit 12, and is a view of the light emitted from a plurality of light sources 31 installed on the base table 22 ( By diffusing (indicated by a broken line in the figure) by the first light diffusing section 32A and the second light diffusing section 32B in which the posture of the diffusing plate 41 is adjusted, the entire lower surface of the substrate KB is uniformly lighted (brightness). ) Shows the situation of irradiation. The diffuser plate 41 may be either one that transmits light or one that reflects light, and it is preferable to use the diffuser plate 41 properly depending on the situation.

In the present embodiment, as described above, the entire lower surface of the substrate KB can be irradiated with a uniform amount of light. Therefore, although the light source 31 is fixed to the base table 22, it depends on the position from the light source 31. It is possible to prevent the amount (brightness) of the light reaching the substrate hole KH from being biased. Therefore, in the above-mentioned component mounting operation, when the substrate hole KH is recognized by the substrate recognition camera 18, the substrate hole KH can be accurately recognized.

As described above, the component mounting device 1 in the present embodiment includes a light source 31 that emits light and a light diffusing unit 32 that diffuses the light emitted from the light source 31 below the substrate transport unit 12. There is. The light diffusing unit 32 includes a diffusing plate 41 that transmits or reflects light emitted from the light source 31 to diffuse it, and a support unit that supports the diffusing plate 41 in a state in which the posture can be changed. Therefore, by changing the posture of the diffuser plate 41, the light emitted from the light source 31 is irradiated to the lower surface of the substrate KB positioned at the work position by the substrate transport unit 12 with a uniform amount of light (brightness). It is possible to clearly and accurately recognize the through hole (board hole KH) provided in the board KB. Therefore, according to the component mounting device 1 in the present embodiment, the component mounting work for mounting the component BH on the board KB can be performed with high accuracy by targeting the position of the board hole KH.

Although the embodiments of the present invention have been described so far, the present invention is not limited to the above-mentioned ones, and various modifications and the like are possible. For example, in the above-described embodiment, the light diffusing portion 32 whose posture of the diffusing plate 41 can be changed is an example of a configuration in which both ends of the diffusing plate 41 in the long side direction are supported by a pair of pin-shaped members 50 (first). An example of a configuration (second light diffusion unit 32B) in which the light diffusion unit 32A) and the diffusion plate 41 are rotatably supported around the rotation axis JX extending along the long side direction is shown, but other configurations are shown. It may be possible to change the posture of the diffuser plate 41. Further, in the above-described embodiment, the pin-shaped member 50 constituting the first light diffusing portion 32A is a member separate from the lower receiving pin 23 that supports the lower surface of the substrate KB, but the pin-shaped member 50 is lowered. The receiving pin 23 may be used (that is, the pin-shaped member 50 is also used as the lower receiving pin 23), and if the lower receiving pin 23 can be used as the pin-shaped member 50, the lower receiving pin 23 may be used as the pin-shaped member 50. May be used as.

Further, in the above-described embodiment, the diffusion plate 41 of the first light diffusion unit 32A has three sets of insertion holes SH, but this is an example, and at least two at positions different from the reference axis J0. As described above, it is preferable that one set is located on the axis (reference axis J0) passing through the center of gravity GV of the diffusion plate 41. Further, in the above-described embodiment, both the first light diffusing unit 32A and the second light diffusing unit 32B are used as the light diffusing unit 32, but the first light diffusing unit 32A and the second light diffusing unit 32B are used. Only one may be used. Further, the light source 31 may be installed below the substrate transport unit 12, and if the irradiated light reaches the lower surface of the substrate KB through the light diffusion unit 32, it does not necessarily have to be provided on the base table 22. good.

Further, in the above-described embodiment, in the support portion 42 of the second light diffusion portion 32B, the pair of rotation support walls 62 are connected by the connecting portion 63, but the pair of rotation support walls 62 is connected to the connecting portion 63. It does not have to be concatenated by. In this case, a plurality of insertion protrusions extending downward are formed on the lower surface of each rotation support wall 62, and the plurality of insertion protrusions are inserted into the lower receiving pin insertion holes 22H of the base table 22 to perform each rotation. It is preferable that the support wall 62 can be attached to the base table 22.

Provided is a component mounting device capable of clearly and accurately recognizing a through hole (board hole) for mounting a component provided on a board and mounting the component with high accuracy.

1 Parts mounting device 12 Board transfer unit 12a Conveyor 22 Base table (table member)
31 Light source 32 Light diffusing part 32A 1st light diffusing part 32B 2nd light diffusing part 41 Diffusing plate 42 Support part 50 Pin-shaped member 62 Rotating support wall 63 Connecting part J0 Reference axis (axis)
J1 1st offset axis J2 2nd offset axis JX rotation axis SH insertion hole SH0 reference insertion hole SH1 1st offset insertion hole SH2 2nd offset insertion hole KB board

Claims (8)

A board transport section that supports and transports both ends of the board in the width direction by a pair of conveyors and positions the board at a predetermined working position.
A table member installed below the board transfer section and
A light source installed below the substrate carrier and emitting light,
A light diffusing portion provided on the upper surface of the table member and diffusing the light emitted from the light source to irradiate the lower surface of the substrate positioned at the working position.
Equipped with
The light diffusing part is
A diffuser plate that transmits or reflects light emitted from the light source and diffuses it.
A support portion provided on the upper surface of the table member to support the diffuser plate in a state in which the posture can be changed, and a support portion.
Parts mounting device equipped with. The support portion is composed of a pair of pin-shaped members attached to the upper surface of the table member and extending upward, and the diffusion plate has a plurality of pairs of insertion holes selectively inserted into the pair of pin-shaped members. The component according to claim 1, wherein the posture of the diffusion plate can be changed by switching the pair of insertion holes inserted through the pair of pin-shaped members between the plurality of sets of insertion holes. On-board device. The component mounting device according to claim 2, wherein one set of the plurality of sets of insertion holes is provided on an axis passing through the center of gravity of the diffusion plate. The component according to claim 3, wherein among the plurality of sets of insertion holes, those other than the one set of insertion holes provided on the axis have a long hole shape long in a direction orthogonal to the axis. On-board device. The support portion includes a pair of rotation support walls that rotatably support the diffusion plate around a predetermined rotation axis, and the posture of the diffusion plate is formed by rotating the diffusion plate around the rotation axis. The component mounting device according to claim 1, wherein the device can be changed. The support portion includes a connecting portion that connects the pair of rotating support walls in a region below the diffuser plate, and the diffuser plate, the pair of rotating support walls, and the connecting portion constitute one unit. The component mounting device according to claim 5. The component mounting device according to claim 6, wherein the light source is provided in the connecting portion. 1. The component mounting device described.

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