JP2014056952A - Electronic component-mounting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic component-mounting device capable of surely preventing an electronic component from being mounted on a substrate by a tilted adsorption nozzle.SOLUTION: An electronic component-mounting device comprises: a protrusion 23 which protrudes upwards; and a component-moving section 14 for moving a suction nozzle 1 which sucks an electronic component 2 in a horizontal direction and a vertical direction. The electronic component-mounting device further comprises: a height-measuring section 32 for measuring a height in the state where a surface to be measured orthogonal to an axial line of the suction nozzle 1 and movable integrally with the suction nozzle 1 is abutted from an upper side to the protrusion 23; and a determination section 33 for determining whether a tilting angle of a component sucking face 1a of the suction nozzle 1 is smaller than a predetermined angle based on a plurality of height data items obtained by measuring the heights, by means of the height-measuring section 32, at a plurality of points to be measured on the surface to be measured.

Description

  The present invention relates to an electronic component mounting apparatus including a determination unit that determines a defect due to an inclination of a suction nozzle.

Conventionally, as a mounting apparatus capable of detecting that the suction nozzle is tilted, for example, there is one described in Patent Document 1.
The mounting apparatus disclosed in Patent Document 1 recognizes an electronic component sucked by a suction nozzle by imaging it with a camera, and calculates the inclination of the suction nozzle based on position information obtained from image data. And this mounting apparatus mounts an electronic component so that the inclination of a suction nozzle may be corrected. For this reason, according to the mounting apparatus described in Patent Document 1, even when the suction nozzle is inclined, it is possible to correct the position where the electronic component contacts the substrate during mounting.

JP-A-4-286200

  However, in the mounting apparatus described in Patent Document 1, there is a possibility that a problem described later may occur due to mounting an electronic component using an inclined suction nozzle. This defect is a defect as shown in FIGS. 8A to 8C and FIGS. 9A to 9C, for example. In FIG. 9 and FIG. 9, reference numeral 1 indicates a suction nozzle, 2 indicates an electronic component, and 3 indicates a mounting substrate. As shown in FIGS. 8A to 8B, when the electronic component 2 adsorbed by the inclined adsorption nozzle 1 comes into contact with the substrate 3, the electronic component 2 is inclined as shown in FIG. The nozzle 1 and the substantially horizontal substrate 3 are sandwiched between them, and there is a possibility that they slip and move in the horizontal direction. In this case, the mounting position of the electronic component 2 changes.

Further, as shown in FIGS. 9A to 9B, one end of the electronic component 2 sucked by the inclined suction nozzle 1 collides with the substrate 3, and the electronic component 2 is caused by an impact generated at the collision portion. There is a possibility that the one end of the may be damaged.
Further, as shown in FIG. 9C, the electronic component 2 may be separated from the suction surface 1 a of the suction nozzle 1 by the impact and placed on the mounting position so as to follow the substrate 3 during mounting. In this case, since the suction nozzle 1 presses a portion away from the center of the electronic component 2, the distribution of the load pressing the electronic component 2 against the substrate 2 is not uniform. Thus, when the load is applied to the electronic component 2 in a biased manner, a contact portion between the electrode (not shown) of the electronic component 2 and the substrate 3 is liable to cause a contact failure.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide an electronic component mounting apparatus capable of reliably preventing electronic components from being mounted on a substrate by an inclined suction nozzle. And

  In order to achieve this object, an electronic component mounting apparatus according to the present invention includes a protrusion projecting upward, a component moving unit that moves a suction nozzle that sucks an electronic component in a horizontal direction and a vertical direction. A height measuring unit that measures the height in a state where a surface to be measured that is orthogonal to the axis of the suction nozzle and moves integrally with the suction nozzle is in contact with the protrusion from above; and the height measurement unit Whether the inclination angle of the component suction surface of the suction nozzle is smaller than a predetermined angle based on a plurality of height data obtained by performing the height measurement at a plurality of measurement points on the measurement surface. And a determination unit for determining.

  According to the present invention, in the invention described above, the surface to be measured includes a component suction surface of the suction nozzle, a plate-like member sucked by the component suction surface of the suction nozzle, or a lower surface of the electronic component, and the plate-like member or The lower surface of the electronic component is formed wider than the component adsorption surface.

  The present invention is characterized in that, in the invention, the height of the upper end of the protrusion is equal to the height of the mounting surface of the substrate on which the electronic component is mounted.

  The present invention is characterized in that, in the above invention, the protrusion is arranged in the vicinity of a mounting position where the electronic component is mounted on a substrate.

  The present invention is the above invention, wherein the protrusion has sufficient rigidity that the measured surface is not elastically deformed in a state where the measured surface is pressed by driving by the component moving unit, and the upper surface of the protrusion is The spherical surface is convex upward.

  The present invention is the above invention, wherein the measurement by the height measuring unit is performed in advance during maintenance, when mounting is suspended, including when a mounting board or electronic component is prepared, or when waiting due to replacement of a component being mounted or a substrate, It is characterized in that the implementation is interrupted when the set number of uses is reached.

According to the present invention, it is possible to discriminate a suction nozzle whose suction surface is greatly inclined more than a predetermined angle. Therefore, according to the electronic component mounting apparatus according to the present invention, the suction nozzle that may cause a defect can be replaced or switched to a mounting form that does not use this suction nozzle. Can be implemented using suction nozzles that are smaller than a predetermined angle (within a normal range).
Therefore, according to the present invention, the accuracy of the mounting position of the electronic component can be kept high, and the electronic component can be reliably prevented from being damaged at the time of mounting or the contact portion between the electronic component and the substrate from causing a contact failure. It becomes possible.

It is a block diagram which shows the structure of the mounting device for electronic components by the 1st Embodiment of this invention. In the side view of the suction nozzle and the protrusion, FIG. 4A shows a state where the height is being measured, and FIG. 4B shows a state where the suction nozzle is spaced above the protrusion. FIG. 4A is a side view of the suction nozzle and the protrusion that have sucked the plate-like member. FIG. 4A shows a state in which the height measurement is performed, and FIG. Indicates the state. It is a top view for demonstrating the position of the to-be-measured point of a component adsorption | suction surface. It is a top view for demonstrating the position of the to-be-measured point of the lower surface of a plate-shaped member or an electronic component. It is a flowchart for demonstrating operation | movement of the mounting apparatus for electronic components which concerns on this invention. It is a side view of an adsorption nozzle and a protrusion by a 2nd embodiment. The side view which shows the state at the time of mounting of the inclined suction nozzle and an electronic component, The figure (A) shows the state before mounting, The figure (B) shows the state which the electronic component contacted the board | substrate, (C) shows a state in which the electronic component has slipped. The side view which shows the state at the time of mounting of the inclined suction nozzle and an electronic component, The figure (A) shows the state before mounting, The figure (B) shows the state which the electronic component collided with the board | substrate, (C) shows a state in which the electronic component is mounted away from the suction nozzle.

(First embodiment)
Hereinafter, an embodiment of an electronic component mounting apparatus according to the present invention will be described in detail with reference to FIGS. In these drawings, members that are the same as or equivalent to those described with reference to FIGS. 8 and 9 are given the same reference numerals, and detailed descriptions thereof are omitted as appropriate.
An electronic component mounting apparatus 11 shown in FIG. 1 mounts an electronic component 2 from an electronic component supply unit 13 provided on a base unit 12 on a substrate 3 of a substrate transfer unit 15 by a component moving unit 14. As the electronic component supply unit 13, an electronic component supply unit such as a flip chip (package) can be used. Although the substrate transport unit 15 is not shown in detail, one that transports the substrate 3 by a conveyor is used.

  The component moving unit 14 is configured to move the head unit 16 in a horizontal two-dimensional direction by an X direction moving device 17 and a Y direction moving device 18. The head unit 16 is provided with a plurality of suction heads 19 that support the suction nozzles 1, and a rotating device 20 that rotates the suction nozzles 1 about the vertical axis. Each suction head 19 is provided with a lifting device 21 for lifting and lowering the suction nozzle 1.

  The lifting device 21 includes a load control mechanism (not shown) that controls the load that presses the electronic component 2 against the substrate 3 during mounting. This load control mechanism detects a reaction force when the electronic component 2 comes into contact with the substrate 3 in the process of lowering the suction nozzle 1 during mounting, and the load applied to the suction nozzle 1 based on the magnitude of this reaction force. What can be increased or decreased is used. According to this load control mechanism, it can be determined whether or not the electronic component 2 has contacted the substrate 3.

  As shown in FIG. 2, a flat component suction surface 1 a is formed at the lower end of the suction nozzle 1. The component suction surface 1a of the suction nozzle 1 according to this embodiment is orthogonal to the axis C (see FIG. 2) of the suction nozzle 1, and as shown in FIG. 4, a circle surrounding the air suction port 22 in plan view. It is formed in an annular shape. Note that the shapes of the component suction surface 1 a and the air suction port 22 are not limited to the shapes shown in FIG. 4 and can be changed as appropriate. The component suction surface 1a constitutes the “surface to be measured” in the present invention.

The base 12 has a protrusion 23 for detecting the inclination of the lower surface (component suction surface 1a) of the suction nozzle 1 and controls the operation of various devices of the electronic component mounting device 1. A control device 24 is provided.
As shown in FIG. 2, the protrusion 23 is formed in a columnar shape extending in the vertical direction, and includes a base plate 25 of the base 12, a conveyor frame (not shown) of the substrate 3 transport unit 15, and the like. It is fixed to.

The protrusion 23 according to this embodiment is made of metal, and has sufficient rigidity so as not to be elastically deformed even when the suction nozzle 1 is lowered and pressed by the lifting device 21. ing.
The upper end portion of the protrusion 23 is formed in a hemispherical shape. That is, the upper surface 23a of the protrusion 23 is a spherical surface that protrudes upward.

The height of the upper end of the protrusion 23 is formed so as to be equal to the height of the mounting surface of the substrate 3 placed on the substrate transport unit 15.
Further, the protrusion 23 is disposed in the vicinity of the mounting position where the electronic component 2 is mounted on the substrate 3. The protrusions 23 according to this embodiment are positioned so as to be adjacent to the conveyor.

As shown in FIG. 1, the control device 24 includes a mounting unit 31, a height measuring unit 32, a determination unit 33, and a storage unit 34, and a display device 35 is connected thereto. The display device 35 is used for displaying the operation status of the mounting apparatus 1 and various error displays.
The mounting unit 31 controls operations of the electronic component supply unit 13, the board transfer unit 15, the component moving unit 14, and the like.

  The height measuring unit 32 is for measuring the height of the suction nozzle 1. As shown in FIG. 2 (A), the height measuring unit 32 according to this embodiment brings the component suction surface 1a of the suction nozzle 1 into contact with the protrusion 23 from above, or as shown in FIG. 3 (A). As described above, the height of the suction nozzle 1 is measured in a state where the plate-like member 36 or the electronic component 2 sucked on the component suction surface 1a is in contact with the protrusion 23 from above. The plate-like member 36 and the lower surface of the electronic component 2 are formed wider than the component suction surface 1 a of the suction nozzle 1.

  The plate-like member 36 may be a glass plate or a metal plate formed with a high degree of flatness on both the front and back surfaces and a high thickness. In this embodiment, the component suction surface 1 a, the lower surface of the plate-like member 36, and the lower surface of the electronic component 2 constitute a “measurement surface” in the present invention. The upper surface 23a of the protrusion 23 is a spherical surface, and the contact between the protrusion 23 and the component suction surface 1a, the plate-like member 36, or the lower surface of the electronic component 2 is a point contact. For this reason, at the time of the measurement, the height of one part on the lower surface of the component suction surface 1a, the plate-like member 36 or the electronic component 2 is measured.

  In measuring the height, in addition to measuring the height at the moment when the component suction surface 1a, the lower surface of the plate-like member 36 or the lower surface of the electronic component 2 contacts the protrusion 23, the suction nozzle 1 This can be done in a state in which the protrusion 23 is pushed with a predetermined load. The predetermined load can be a mounting load when the electronic component 2 is pressed against the substrate 3 during mounting so that the same result as that obtained when the electronic component 2 is actually mounted on the substrate 3 can be obtained.

  The height of the suction nozzle 1 in a state where the surface to be measured (the component suction surface 1a, the plate-like member 36, the lower surface of the electronic component 2) is in contact with the protrusion 23 is a predetermined reference position of the base 12 And the distance from the component suction surface 1a of the suction nozzle 1, for example. In order to determine whether or not the suction nozzle 1 is in contact with the protrusion 23 or to apply a load so that the suction nozzle 1 pushes the protrusion 23 with a predetermined load, the load control of the lifting device 21 is performed. This can be done using a mechanism.

  The height measurement by the height measuring unit 32 is performed on a plurality of measurement points on one measurement surface. The positions of the plurality of measurement points and the measurement order of each measurement point are stored as data in the storage unit 34 and read from the storage unit 34 by the height measurement unit 32 as necessary.

  When the height is measured by bringing the component suction surface 1a of the suction nozzle 1 into contact with the protrusion 23, for example, as shown in FIGS. 4A to 4D, the suction nozzle 1 is moved in two horizontal directions (X Direction and Y direction) and can be performed for four points to be measured P1 to P4. 4A to 4D are plan views schematically showing a state in which the protrusion 23 and the component suction surface 1a are viewed from above, and are drawn so that coordinates in the X direction and the Y direction can be understood. . 4A to 4D, the position of the axis C of the suction nozzle 1 is drawn as a point C.

As shown in FIG. 4A, the measured point P1 is a contact point when the position of the axis C of the suction nozzle 1 is positioned at the coordinates (X1, Y1) and the suction nozzle 1 is brought into contact with the protrusion 23. Is the position. The measured point P1 is located on the upper right side of the component suction surface 1a in FIG.
As shown in FIG. 4B, the measurement point P2 is a contact point when the position of the axis C of the suction nozzle 1 is positioned at the coordinates (X2, Y1) and the suction nozzle 1 is brought into contact with the protrusion 23. Is the position. The measured point P2 is located on the upper left side of the component suction surface 1a in FIG.

The point to be measured P3 is a contact point when the position of the axis C of the suction nozzle 1 is positioned at coordinates (X2, Y2) and the suction nozzle 1 is brought into contact with the protrusion 23 as shown in FIG. Is the position. The measurement point P3 is located on the lower left side of the component suction surface 1a in FIG.
The point to be measured P4 is a contact point when the position of the axis C of the suction nozzle 1 is positioned at coordinates (X1, Y2) and the suction nozzle 1 is brought into contact with the protrusion 23 as shown in FIG. Is the position. The measurement point P4 is located on the lower right side of the component suction surface 1a in FIG.
The four pieces of height data obtained by measuring the measurement points P1 to P4 are stored in the storage unit 34.

Even when the plate-like member 36 and the electronic component 2 are sucked by the suction nozzle 1 and the height is measured, the height is measured at a plurality of points to be measured.
This height measurement can be performed for four measurement points Q1 to Q4 as shown in FIGS. 5A to 5D, for example. FIGS. 5A to 5D are plan views schematically showing a state in which the protrusion 23 and the plate-like member 36 are viewed from above, and are drawn so that coordinates in the X direction and the Y direction can be understood. .

As shown in FIG. 5A, the measurement point Q1 is a contact when the position of the axis C of the suction nozzle 1 is positioned at the coordinates (X3, Y3) and the plate member 36 is brought into contact with the protrusion 23. The position of the point. The measured point Q1 is located on the upper right side of the plate-like member 36 in FIG.
As shown in FIG. 5B, the measurement point Q2 is a contact when the position of the axis C of the suction nozzle 1 is positioned at the coordinates (X6, Y3) and the plate member 36 is brought into contact with the protrusion 23. The position of the point. The measurement point Q2 is located on the upper left side of the plate-like member 36 in FIG.

As shown in FIG. 5C, the measurement point Q3 is a contact when the position of the axis C of the suction nozzle 1 is positioned at the coordinates (X6, Y6) and the plate member 36 is brought into contact with the protrusion 23. The position of the point. The measured point Q3 is located on the lower left side of the plate-like member 36 in FIG.
As shown in FIG. 5D, the measurement point Q4 is a contact when the position of the axis C of the suction nozzle 1 is positioned at the coordinates (X3, Y6) and the plate member 36 is brought into contact with the protrusion 23. The position of the point. The measured point Q4 is located on the lower right side of the plate-like member 36 in FIG.
Four height data obtained by measuring these measured points Q1 to Q4 are also stored in the storage unit 34.

The height measurement by the height measuring unit 32 is performed at a predetermined time. The time when the height measurement is carried out is as follows: during maintenance including replacement work of the suction nozzle 1, when an abnormality in mounting accuracy is detected, when the mounting board 3 is carried out and carried in, the electronic component supply unit 13 when preparing, when mounting on a predetermined number of substrates 3, mounting a predetermined number of electronic components 2, and the like.
The height measurement can be performed not only for all the suction heads 19 but also for only the predetermined suction heads 19 or only the predetermined suction nozzles 1. In addition, the height measurement can be performed in accordance with the order in which the height measurement is performed in advance for each suction head 19.

  The determination unit 33 of the control device 24 determines the component suction surface 1a of the suction nozzle 1 based on the plurality of height data obtained by measuring the height by the height measurement unit 32 for a plurality of measurement points. It is determined whether the inclination angle is smaller than a predetermined angle. This determination can be performed as follows, for example. For example, the difference between the maximum value and the minimum value of the four height data measured for the measurement points P1 to P4 or the measurement points Q1 to Q4 is obtained, and this difference is compared with a predetermined threshold value. This threshold value is a difference value between the maximum value and the minimum value when the inclination angle of the component suction surface 1a is in a normal range. The determination unit 33 determines that the difference between the maximum value and the minimum value of the height data is equal to or greater than the threshold value, and determines that the difference is smaller than the threshold value. In other words, the component suction surface 1a is normal. It is determined that it is in the range.

  When the determination unit 33 determines that the inclination angle of the component suction surface 1a is defective, the display device 35 displays a display indicating that the suction nozzle 1 is abnormal. In addition, when it has the function which can replace | exchange the suction nozzle 1 automatically, the suction nozzle 1 determined to be abnormal can be replaced | exchanged for the new suction nozzle 1. FIG. Further, the use of the suction head 19 having the suction nozzle 1 determined to be abnormal can be stopped, and the subsequent mounting can be replaced with another suction head 19.

  Next, a method for determining the quality of the inclination angle of the component suction surface 1a will be described with reference to the flowchart shown in FIG. In making this determination, the height is measured for each of a plurality of points to be measured set on the component suction surface 1a, the plate-like member 36, or the lower surface of the electronic component 2.

  In order to measure the height, first, in step S1 of the flowchart shown in FIG. 6, the control device 24 controls the operation of the component moving unit 14 to move the suction nozzle 1 to a predetermined position. The predetermined position includes a horizontal position and a vertical position. The predetermined position in the horizontal direction means that the target measurement point on the measurement target surface composed of the lower surface of the component suction surface 1a of the suction nozzle 1 or the plate-like member 36 sucked on the component suction surface 1a or the electronic component 2 is upward. It is a position which overlaps with the upper end of the protrusion 23 when viewed from the side. The height measurement unit 32 reads the corresponding data from the storage unit 34 and sets the target position of the measurement point and the measurement order of each measurement point. As shown in FIGS. 2B and 3B, the predetermined position in the vertical direction is a position where the measured surface becomes a coordinate Z1 that is spaced apart from the protrusion 23 by a predetermined distance Z. .

  Next, in step S <b> 2, the lifting device 21 lowers the suction nozzle 1, and stops the lowering of the suction nozzle 1 when the measurement point comes into contact with the protrusion 23. In step S3, the height measuring unit 32 detects the vertical coordinate Z2 {refer to FIG. 2A and FIG. 3A} of the surface to be measured at the time of contact, and increases the height of the coordinate Z2. This data is stored in the storage unit 34 as data. This height detection is performed until the heights of all measured points are detected, as shown in step S4. After the height measurement is completed for all the points to be measured, in step S5, the determination unit 33 determines whether the inclination angle of the component suction surface 1a is smaller than a predetermined angle.

  If the result of this determination is that the tilt angle is smaller than a predetermined angle, this control is terminated without displaying anything to the effect by the display device 35 or performing nothing. As a result of the determination, if the tilt angle is greater than or equal to a predetermined angle, error processing is performed in step S6. In step S <b> 6, the display device 35 displays a character or a pattern indicating abnormality of the suction nozzle 1. The inclination angle of the component suction surface 1a may change only by replacing the suction nozzle 1. Therefore, at this time, the corresponding suction nozzle 1 may be replaced with another suction nozzle 1. Further, the suction head 19 having the corresponding suction nozzle 1 can be invalidated and replaced with another suction head 19.

According to the electronic component mounting apparatus 11 configured as described above, it is possible to determine the suction nozzle 1 in which the component suction surface 1a is greatly inclined more than a predetermined angle. For this reason, in this electronic component mounting apparatus, since the suction nozzle 1 that may cause a defect can be replaced or switched to a mounting form that does not use the suction nozzle 1, the inclination angle of the component suction surface is set in advance. Mounting can be performed using the suction nozzle 1 smaller than a predetermined angle (within a normal range).
Therefore, according to this embodiment, the accuracy of the mounting position of the electronic component 2 can be kept high, the electronic component 2 is damaged during mounting, or the contact portion between the electronic component 2 and the substrate 3 has poor contact. It is possible to reliably prevent it from happening.

  The inclination angle of the component suction surface 1a can also be measured using a distance measuring device (not shown) using laser light. However, when this distance measuring device is used, since some laser light must be irradiated upward, some kind of shielding must be provided. In addition, in order to be able to accurately measure the fixed point of the suction nozzle 1 with this type of distance measuring device, the distance measuring device and a structure that supports the distance measuring device must be firmly formed. When such a structure is adopted, a large occupied space on the base portion 12 is required, so that there are many restrictions in installing other devices, and the manufacturing cost is also increased. According to this embodiment, since the height of the surface to be measured is measured using the elevating device 21 of the component moving unit 14, the space on the base 12 is compared with the case where the measuring device is used. The cost increase can be suppressed to a minimum only by using an inexpensive protrusion 23.

  The electronic component mounting apparatus according to this embodiment can use the lower surface of the plate-like member 36 or the electronic component 2 adsorbed on the component adsorption surface 1a of the adsorption nozzle 1 when performing height measurement as the surface to be measured. Is. The lower surface of the plate-like member 36 or the electronic component 2 is wider than the component suction surface 1 a of the suction nozzle 1. For this reason, since the measurement area can be expanded by adopting this embodiment, the accuracy of the inclination measurement can be improved. In addition, by setting the lower surface of the electronic component 2 as the surface to be measured, it is possible to determine the presence / absence of an inclination in a manner similar to the actual mounting state, so that the probability of occurrence of a defect can be further reduced.

The height of the upper end of the protrusion 23 according to this embodiment is formed to be equal to the height of the mounting surface of the substrate 3 on which the electronic component 2 is mounted.
For this reason, according to this embodiment, since it is possible to determine whether or not there is an inclination at the same height as the actual mounting height, it is possible to more reliably prevent the occurrence of defects.

The protrusions 23 according to this embodiment are arranged in the vicinity of the mounting position where the electronic component 2 is mounted on the substrate 3.
For this reason, according to this embodiment, since the presence or absence of the inclination can be determined in the vicinity of the actual mounting position, it is possible to more reliably prevent the occurrence of defects.

The protrusion 23 according to this embodiment has sufficient rigidity so that the surface to be measured is not elastically deformed in a state where the surface to be measured is pressed by driving by the component moving unit 14. The upper surface 23a of the protrusion 23 is a spherical surface that protrudes upward.
For this reason, according to this embodiment, the lowering of the suction nozzle 1 can be reliably regulated by the protrusion 23, and the protrusion 23 contacts the surface to be measured by point contact. It can be measured with high accuracy.

The measurement by the height measuring unit 32 according to this embodiment is set in advance at the time of maintenance, when the mounting substrate 3 and the electronic component 2 are prepared, when the mounting is interrupted, when the component is being mounted, or when waiting due to substrate replacement. Implementation can be interrupted when the number of uses is reached.
For this reason, the mounting operation is not interrupted in order to measure the height of the surface to be measured. Therefore, according to this embodiment, it is possible to provide a mounting device for electronic parts with high productivity even though the suction nozzle 1 is used to measure the height.

(Second Embodiment)
In order to detect contact between the surface to be measured and the protrusion, as shown in FIG. 7, a contact detection mechanism provided on the protrusion 23 side can be used. 7, the same or equivalent members as described with reference to FIGS. 1 to 6 are denoted by the same reference numerals, and detailed description thereof is omitted as appropriate.
The protrusions 23 shown in FIG. 7 are supported by the base plate of the base portion 12 via the contact detection mechanism 41. Although not shown in detail as the contact detection mechanism 41, a load cell, a touch sensor, etc. can be used.
Even when this embodiment is adopted, the same effect as that obtained when the above-described first embodiment is adopted can be obtained.

  DESCRIPTION OF SYMBOLS 1 ... Adsorption nozzle, 1a ... Component adsorption surface, 2 ... Electronic component, 3 ... Board | substrate, 11 ... Mounting apparatus for electronic components, 12 ... Base part, 14 ... Component moving part, 23 ... Projection, 32 ... Height measurement Part, 33 ... determination part, 36 ... plate-like member, 41 ... contact detection mechanism, P1 to P4, Q1 to Q4 ... measured points.

Claims (6)

A protrusion protruding upward,
A component moving unit that moves a suction nozzle for sucking an electronic component in the horizontal direction and the vertical direction;
A height measuring unit that measures the height in a state where a surface to be measured that is orthogonal to the axis of the suction nozzle and moves integrally with the suction nozzle is in contact with the protrusion from above;
The inclination angle of the component suction surface of the suction nozzle is based on a predetermined angle based on a plurality of height data obtained by performing height measurement by the height measurement unit at a plurality of measurement points on the measurement surface. An electronic component mounting apparatus, comprising: a determination unit that determines whether the size is small. The electronic component mounting apparatus according to claim 1, wherein the surface to be measured is configured by a component suction surface of the suction nozzle, a plate-like member sucked by the component suction surface of the suction nozzle, or a lower surface of the electronic component,
The electronic component mounting apparatus, wherein a lower surface of the plate member or the electronic component is formed wider than the component adsorption surface.   3. The electronic component mounting apparatus according to claim 1, wherein the height of the upper end of the protrusion is equal to the height of the mounting surface of the substrate on which the electronic component is mounted. A mounting apparatus for electronic components.   The electronic component mounting apparatus according to any one of claims 1 to 3, wherein the protrusion is disposed in the vicinity of a mounting position where the electronic component is mounted on a substrate. Mounting device for electronic components. 5. The electronic component mounting apparatus according to claim 1, wherein the protrusion is elastically deformed in a state in which the surface to be measured is pressed by driving by the component moving unit. Not enough rigidity,
An electronic component mounting apparatus, wherein an upper surface of the protrusion is a spherical surface convex upward.   In the electronic component mounting apparatus according to any one of claims 1 to 5, the measurement by the height measuring unit is performed during maintenance, when mounting is suspended, including when a mounting substrate and an electronic component are prepared, Alternatively, the electronic component mounting apparatus is implemented by interrupting the mounting when the number of times of use reaches a preset number of times during standby during component mounting or board replacement.

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