JP5737562B2 - Resonator support device - Google Patents

Description

  The present invention relates to a resonator support device including clamping means for clamping and supporting a resonator.

  Conventionally, as a device using ultrasonic vibration, the ultrasonic vibration is applied to a plurality of superimposed objects to join the objects, and the ultrasonic vibration is applied to a cutting tool such as a cutter. 2. Description of the Related Art A cutting apparatus that cuts an object, a polishing apparatus that polishes an object by applying ultrasonic vibration to a polishing tool such as a file, and the like are known. In general, an apparatus using these ultrasonic vibrations includes a resonator and a vibrator connected to the resonator, and resonates with the vibration of the vibrator in accordance with the natural frequency of the resonator. When the resonator resonates, the vibration of the vibrator is amplified and the ultrasonic vibration is efficiently applied from the resonator to the object.

  By the way, when supporting the resonator to which the vibrator is connected, if the resonator is simply clamped and supported by the clamp means, the vibration of the resonator is transmitted to the clamp means and the resonator and the clamp means vibrate integrally. Therefore, the natural frequency of the resonator varies easily. Therefore, depending on how the resonator is supported by the clamping means, the natural frequency of the resonator may be greatly deviated and the resonator may not resonate at a predetermined natural frequency in design. Various measures have been taken to clamp and support the resonator to stably vibrate the resonator at a predetermined natural frequency.

  For example, in the apparatus described in Patent Document 1, a predetermined width is cut around the nodal point on the outer periphery of the resonator at a position corresponding to the nodal point (minimum vibration amplitude point) on the center axis of the resonator. The convex part is formed integrally with the resonator, and the convex part is mechanically firmly clamped to support the resonator, thereby preventing the vibration of the resonator from being transmitted to the clamping means. This prevents the natural frequency of the resonator from shifting.

  Further, in the device described in Patent Document 2, a so-called flange structure is formed integrally with the resonator on the outer periphery at a position corresponding to a nodal point on the center axis of the resonator, and the flange structure is Since the resonator is supported by being clamped, the vibration of the resonator is prevented from being transmitted to the clamping means, and the natural frequency of the resonator is prevented from shifting.

Japanese Patent No. 2583398 (paragraphs 0018, 0019, 0021, 0022, 0024, FIGS. 2, 3 etc.) Japanese Patent Laid-Open No. 9-57466 (paragraphs 0007 to 0010, FIGS. 4 and 8, etc.)

  In the above-described conventional apparatus, in order to clamp the resonator so that the natural frequency does not shift by the clamping means, a convex portion or a flange structure is accurately formed on the outer periphery of the position corresponding to the nodal point of the resonator. Since it is necessary, high processing accuracy is required to form the resonator, which increases the manufacturing cost of the resonator.

  The present invention has been made in view of the above-described problems, and supports the resonator so that the natural frequency does not shift by clamping an arbitrary position of the resonator without performing special processing on the resonator. The purpose is to provide technology that can be used.

In order to achieve the above-described object, a resonator support device according to the present invention includes a clamp unit that clamps and supports the resonator, and the clamp unit includes an outer surface of the resonator. A pressing member that presses the resonator against the abutting member by pressing the outer surface of the resonator with the resonator sandwiched between the abutting member and the pressing member The member includes a main body portion and a buffer structure portion provided in the main body portion, the buffer structure portion contacts the resonator and presses the resonator, and the resonator is contacted with the contact member. The resonator is clamped by being directly sandwiched between and clamped, and the buffer structure has a spring structure formed by providing a slit in the pressing member, and the spring structure includes the resonator. Direction to press It is characterized in that have a spring force (claim 1).

The clamp means further includes a toggle mechanism formed by the contact member and the pressing member, and a connecting member that connects the contact member and the pressing member, and in a locked state of the toggle mechanism, The resonator is clamped by the contact member and the pressing member (Claim 2 ).

Further, a heating means for heating the resonator and a cooling means for cooling the clamp means may be further provided (claim 3 ).

  According to the first aspect of the present invention, the resonator is supported by being clamped by the contact member that contacts the resonator and the pressing member that presses the resonator against the contact member. Since the buffer structure provided in the main body of the pressing member contacts the resonator and presses the resonator, the vibration of the resonator is suppressed from being transmitted to the clamping means by the buffer structure, so that resonance occurs. Since the resonator and the clamping means are prevented from vibrating in an integrated manner, even if the resonator is not specially processed, it is possible to clamp an arbitrary position of the resonator so that the natural frequency of the resonator does not deviate. Can be supported.

  Therefore, even if the resonator is not specially processed as in the conventional case, the natural frequency of the resonator is not shifted by merely providing a buffer structure portion where the pressing member of the clamping means contacts the resonator. Since the clamp can be supported, the manufacturing cost of the resonator can be greatly reduced.

Moreover , providing the slit in the pressing member is practical because a spring structure having a spring force in the direction of pressing the resonator can be easily formed in the buffer structure portion.

According to the invention of claim 2 , in the locked state of the toggle mechanism formed by the abutting member and the pressing member and the connecting member for connecting the abutting member and the pressing member, resonance is caused by the abutting member and the pressing member. Since the resonator is clamped, the resonator can be clamped and supported by one touch as compared with the resonator clamp by fixing the contact member and the pressing member with screws or bolts.

According to the third aspect of the present invention, when the resonator is heated by the heating means, the clamp means is cooled by the cooling means, so that the heat is conducted from the heated resonator and the clamp means is raised. Heating can be prevented.

It is a figure which shows a joining apparatus provided with the support apparatus of the resonator which is 1st Embodiment of this invention. It is a figure which shows an example of a resonator. It is a figure which shows the support apparatus of a resonator, Comprising: (a) is an exploded view, (b) is an enlarged view of the part enclosed by the dotted line of (a). It is a figure which shows the state by which the resonator was supported by the support apparatus, Comprising: (a) is a front view, (b) is an AA arrow directional cross-sectional view of (a). It is a figure which shows 2nd Embodiment of the support apparatus of a resonator. It is a figure which shows the different state of the support apparatus of the resonator of FIG. It is a figure which shows 3rd Embodiment of the support apparatus of a resonator, Comprising: (a) is a principal part enlarged view, (b) is BB arrow sectional drawing of (a). It is a figure which shows 4th Embodiment of the support apparatus of a resonator.

<First Embodiment>
A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a view showing a bonding apparatus including a resonator support device according to a first embodiment of the present invention. FIG. 2 is a diagram illustrating an example of a resonator. 3A and 3B are diagrams showing a resonator support device, in which FIG. 3A is an exploded view and FIG. 3B is an enlarged view of a portion surrounded by a dotted line in FIG. 4A and 4B are diagrams showing a state in which the resonator is supported by the support device, where FIG. 4A is a front view and FIG. 4B is a cross-sectional view taken along line AA in FIG.

(Configuration of joining device)
A joining apparatus 100 shown in FIG. 1 joins an object such as a chip 23 or an electronic component to a predetermined position of an object to be mounted such as a substrate 24 or a wafer by ultrasonic vibration. For example, the chip 23 having the metal bumps 23 a on the bonding surface of a semiconductor such as GaAs or Si is bonded to the substrate 24 having the metal bumps 24 a by applying ultrasonic vibration, and the chip 23 is bonded to a predetermined surface of the substrate 24. Joined to position. The chip 23 is held on the holding surface of the holding means 40 of the resonator 7 described later, and the substrate 24 is mounted on the upper surface (mounting surface) of the stage 10 described later.

  As shown in FIG. 1, the joining apparatus 100 includes a joining mechanism 27, a mounting mechanism 28 having a stage table 12, a position recognition unit 29, a transport unit 30, and a control device 31.

  The joining mechanism 27 includes a vertical drive mechanism 25 and a head portion 26. The vertical drive mechanism 25 moves up and down while guiding the resonator support portion 6 with the vertical guide 3 by the vertical drive motor 1 and the bolt / nut mechanism 2. To do. The joining mechanism 27 is coupled to the frame 34, and the frame 34 is connected to the gantry 35 by the four support columns 13 disposed so as to surround the periphery of the pressure center of the head portion 26. A part of the support column 13 and the frame 34 is not shown.

  The resonator support 6 is guided in the vertical direction by the head escape guide 5 and is connected to the bolt / nut mechanism 2 while being pulled by the self-weight counter 4 for canceling the self-weight. A head portion 26 having a resonator 7 is coupled to the resonator support portion 6.

  Further, the resonator support unit 6 is provided with a pressure sensor 32, and the pressure sensor 32 applies pressure to an object to be joined such as the chip 23 and the substrate 24 sandwiched between the resonator 7 and the stage 10. Is detected. Then, the pressure applied to the joining object detected by the pressure sensor 32 is fed back to the control device 31, and the up / down driving mechanism 25 is controlled based on the feedback value, thereby controlling the pressure applied to both the joining objects. Is done. The resonator support section 6 includes resonator section height detection means 36 formed by a linear sensor or the like, whereby the height of the head section 26 is detected.

  The head unit 26 coupled to the resonator support unit 6 includes the resonator 7, the vibrator 8, a holding unit 40 that holds the chip 23 by suction, and a support device 44 that supports the resonator 7.

  The resonator 7 is a general one formed of a metal such as iron, titanium, or stainless steel, and resonates with ultrasonic vibration generated by the vibrator 8. In addition, it is formed with a length of one wavelength of the resonance frequency so that both end positions are the maximum amplitude points. If comprised in this way, each position 1/4 wavelength away from the maximum amplitude point will correspond to the minimum amplitude point (nodal point). The resonator 7 is formed in a cylindrical shape having a circular cross section.

  The vibrator 8 is connected to one end of the resonator 7 coaxially with the central axis of the resonator 7. The vibrator 8 is controlled by the control device 31 and vibrates at a frequency substantially the same as the natural frequency of the resonator 7. The resonator 7 resonates with the vibration of the vibrator 8, and the direction of the central axis thereof Vibrate.

  The holding means 40 is attached to the lower surface of the outer periphery at the substantially central position of the resonator 7 that is the maximum amplitude point by an adhesive such as a thermosetting resin, and holds a bonding target such as the chip 23 or an electronic component. Hold on. The holding means 40 includes a vacuum suction mechanism (not shown) so that a bonding target such as the chip 23 or an electronic component can be sucked and held on the holding surface. The structure for holding the object to be joined such as the chip 23 is not limited to the vacuum suction mechanism, and any structure can be used as long as it can hold the object such as an electrostatic suction mechanism or a mechanical chuck mechanism. Also good. Alternatively, the joining object may be held by the holding means 40 by directly attaching the joining object to the holding means 40.

  Further, the holding means 40 may be formed of a member other than metal, such as cemented carbide tungsten carbide, ceramic, diamond, etc., and the holding means 40 configured in this way is composed of an epoxy adhesive, Ni, Cu, You may adhere | attach to the resonator 7 with metal brazing etc., such as Ag.

  Further, a first supported portion 41 and a second supported portion having outer peripheral surfaces buried inside the outer peripheral surface of the resonator 7, each having a concave groove formed on the outer periphery at a position corresponding to the minimum amplitude point of the resonator 7. A portion 42 is formed. And the 1st to-be-supported part 41 and the 2nd to-be-supported part 42 which were formed in concave shape are clamped by the 1st clamp means 21 and the 2nd clamp means 22 which the support apparatus 44 has, respectively, and the resonator 7 is a support apparatus. 44.

  In this embodiment, the first supported portion 41 and the second supported portion 42 are formed in an octagonal cross section substantially perpendicular to the central axis of the resonator 7. The cross-sectional shape of the second supported portion 42 is not limited to the octagonal shape, and may be a circular shape or other polygonal shapes. Further, the position where the first supported portion 41 and the second supported portion 42 are formed is not limited to the minimum amplitude points f1 and f3 of the resonator 7, and the first supported portion 41 and the second supported portion 42 are located at arbitrary positions of the resonator 7. The support part 41 and the second supported part 42 may be formed. In addition, the first supported portion 41 and the second supported portion 42 do not necessarily have to be formed by the concave grooves formed on the outer periphery of the resonator 7 as described above. The first supported portion 41 and the second supported portion 42 may be formed in a convex shape on the outer periphery, or the first supported portion 41 and the first supported portion 41 and the outer peripheral surface at any position of the resonator 7 may be processed without being processed. The first supported part 41 and the second supported part 42 may be arbitrarily formed at an arbitrary position of the resonator 7 according to the usage mode and the support mode of the resonator 7. May be formed.

  Further, the base portion 20 of the support device 44 is fixed to the resonator support portion 6, and the resonator support portion 6 is driven up and down by the vertical drive mechanism 25, thereby the resonator 7 supported by the support device 44. It moves up and down and the objects to be joined such as the chip 23 and the substrate 24 are pressurized.

  In addition, if the holding means 40 is formed of glass, super hard tungsten carbide, ceramic, diamond, or the like having a relatively high hardness among the above materials, the resonator 7 is made of a material having excellent acoustic characteristics, such as a titanium alloy. It is good to form by. Further, if the holding means 40 is formed of a material having high hardness, the resonator 7 may be formed of an inexpensive material such as Al.

  The configuration and operation of the support device 44 will be described in detail later.

  The mounting mechanism 28 includes a stage 10 on which a substrate 24 as an object to be mounted is placed, and a stage table 12 that moves the stage 10 in a horizontal plane that is substantially perpendicular to the vertical direction (the arrow Z direction in FIG. 1). ing.

  The stage 10 includes a vacuum suction mechanism (not shown) for holding the substrate 24 on the upper surface of the stage 10 by suction. In addition, the structure for holding the mounted object such as the substrate 24 or the wafer on the upper surface of the stage 10 is not limited to the vacuum chucking mechanism, but a mechanism that can hold the mounted object such as an electrostatic chucking mechanism or a mechanical chuck mechanism. Any configuration may be used. Further, the mounted object may be simply placed on the stage 10.

  The stage table 12 includes a moving shaft that can be moved in parallel and rotationally. The stage table 12 is held by the holding means 40 of the substrate 24 held on the upper surface of the stage 10 by moving the stage 10 relative to the head portion 26. The relative position with respect to the chip 23 is adjusted. In this embodiment, the stage table 12 is controlled by the control device 31 based on the relative positional relationship between the chip 23 and the metal bumps 23a and 24a (alignment marks) of the substrate 24 read by the upper and lower mark recognition means 14 described later. The relative position adjustment between the chip 23 and the substrate 24 is performed under the control.

  The position recognition unit 29 is inserted between the chip 23 and the substrate 24 arranged to face each other, and optically reads position recognition alignment marks (metal bumps 23a and 24a) provided on the chip 23 and the substrate 24, respectively. The upper / lower mark recognition means 14, the amplitude detector 33 for detecting the amplitude of the chip 23, the substrate 24 and the resonator 7, and the recognition means moving table for moving the upper / lower mark recognition means 14 and the amplitude detector 33 in the horizontal plane and in the vertical direction. 15. The upper and lower mark recognizing means 14 takes an image of a well-known two-field optical system lens composed of a mirror and a prism, and a chip 23 and a substrate 24 that are separately disposed above and below the two-field optical system lens. CCD camera (not shown).

  The transport unit 30 includes a chip supply device 16 and a chip tray 17 that transport the chips 23, and a substrate transport device 18 and a substrate transport conveyor 19 that transport the substrate 24.

  The control device 31 adjusts the pressure applied to the chip 23 and the substrate 24 via the head unit 26 and the voltage and current applied to the vibrator 8 to adjust the ultrasonic vibration energy applied to the chip 23 and the substrate 24. Control the size. Further, the control device 31 controls the vertical drive mechanism 25 based on the detection signal of the height position of the head unit 26 by the resonator unit height detection means 36, and the height of the head unit 26 in the direction of arrow Z in FIG. Adjust the height. Further, the control device 31 includes an operation panel (not shown) for controlling the entire joining device 100.

(Configuration of support device)
The configuration of the support device 44 will be described mainly with reference to FIGS. 3 and 4. As shown in FIGS. 3A and 4A, the support device 44 includes a base 20, a first clamp means 21, and a second clamp means 22, and the base 20 is fixed to the resonator support part 6. As a result, the support device 44 is disposed in the joining device 100.

  The first clamping means 21 and the second clamping means 22 include contact members 21a and 22a that contact the resonator 7, respectively, and pressing members 21b and 22b that press the resonator 7 against the contact members 21a and 22a. Yes. Since the configurations of the first clamping means 21 and the second clamping means 22 are substantially the same, only the configuration of the first clamping means 21 will be described below, and the configuration of the second clamping means 22 will be described below. Description is omitted.

  The abutting member 21a is a plate-like plate made of a metal such as iron or stainless steel (SUS304) so that it can reliably abut against a part of the outer peripheral surface of the first supported portion 41 provided in the resonator 7. The member is formed with a concave contact portion 21c having a shape that substantially matches the outer shape of a part of the outer peripheral surface of the first supported portion 41, and the opening side of the concave contact portion 21c is the base portion 20. Is fixed to the base 20 by fixing means such as a bolt so as to face in the opposite direction.

  The pressing member 21b has a main body portion 21d made of a substantially L-shaped plate member made of the same material as the contact member 21a, and the outer peripheral surface of the first supported portion 41 of the resonator 7 at the tip of the main body portion 21d. A buffer structure portion 21f having a pressing portion 21e in contact with is provided. In this embodiment, the pressing member 21 b can press the resonator 7 by reliably contacting the part of the outer peripheral surface of the first supported portion 41 provided in the resonator 7. By cutting off the inner corner on the front end side of the main body portion 21d, the main body portion 21d is formed to have a shape that substantially matches the outer shape of a part of the outer peripheral surface of the first supported portion 41.

  The buffer structure 21f is provided with a spring structure 21h formed by providing slits 21g formed alternately in parallel with the pressing portion 21e from both sides across the pressing portion 21e. Further, the pressing portion 21e has a spring force in a direction in which the outer peripheral surface of the first supported portion 41 of the resonator 7 is pressed (see FIG. 3B).

  If comprised in this way, in the state where the resonator 7 was arrange | positioned so that the 1st to-be-supported part 41 might contact | abut to the contact part 21c of the contact member 21a, two press members 21b are each pressed part 21e. By disposing the concave abutting portion 21c on both sides of the opening of the concave contact portion 21c so as to face inward, the respective pressing portions 21e are brought into contact with the first supported portion 41 of the resonator 7 so as to sandwich the resonator 7 therebetween. When the two pressing members 21b are fixed to the abutting member 21a with the bolts 43, the resonator 7 is pressed against the abutting portion 21c by the two pressing portions 21e, so that the first supported portion 41 becomes the abutting portion 21c and the two The resonator 7 is clamped and supported by the first clamping means 21 by being clamped from three directions by the pressing portion 21e (see FIG. 4B).

  In addition, the thickness of the contact member 21a and the pressing member 21b formed by the plate-like members is the same as the size of the resonator 7 clamped and supported by the support device 44, the first supported portion 41 provided in the resonator 7, and What is necessary is just to determine suitably according to the shape and width | variety of the 2nd supported part 42. FIG.

  Further, in this embodiment, the first supported portion 41 and the second supported portion 42 provided in the resonator 7 are arranged so that the holding means 40 is supported when the resonator 7 is clamped and supported by the support device 44. The cross-sectional shape is formed in a polygonal (octagonal) shape so that the holding surface and the upper surface of the stage 10 are substantially parallel. Therefore, the holding surface of the holding means 40 can be disposed opposite to the upper surface of the stage 10 simply by clamping and supporting the first supported portion 41 and the second supported portion 42 of the resonator 7 by the support device 44. .

  At this time, a plurality of holding means 40 are provided on the outer periphery of the resonator 7, and the resonator 7 is configured to be rotatable about the central axis of the resonator 7 by loosening the bolt 43, so that the first supported When the resonator 7 is clamped and supported by the support device 44, the holding surface of any one holding means 40 and the upper surface of the stage 10 are substantially parallel to each other. If formed in this way, the bolt 43 is loosened and the resonator 7 is rotated about the central axis of the resonator 7, so that, for example, when the holding surface of the holding means 40 is deteriorated, it faces the upper surface of the stage 10. The holding means 40 having a deteriorated holding surface can be easily replaced with another holding means 40.

  The resonator 7 supported by the support device 44 is provided by providing a plane adjustment mechanism such as a well-known copying mechanism that is generally used at the connecting portion between the base 20 of the support device 44 and the resonator support portion 6. The inclination of the holding surface of the holding means 40 and the upper surface of the stage 10 can be matched more accurately.

(Joining operation)
Next, an example of a bonding operation for bonding the chip 23 to a predetermined position of the substrate 24 by ultrasonic vibration in the bonding apparatus 100 will be described.

  First, the chip 23 as the bonding object and the substrate 24 as the mounted object are supplied. The chip 23 is supplied from the chip tray 17 to the holding means 40 attached to the resonator 7 by the chip supply device 16 and is sucked and held. In addition, the substrate 24 is supplied from the substrate transfer conveyor 19 to the stage 10 by the substrate transfer device 18 and held by suction.

  Next, the upper and lower mark recognition means 14 is inserted between the chip 23 and the substrate 24 held so that the respective bonding surfaces face each other by the recognition means moving table 15, and the chip 23 and the substrate 24 held opposite to each other are inserted. The positions of the alignment marks (metal bumps 23 a and 24 a) provided respectively are detected by the upper and lower mark recognition means 14. Then, based on the relative positional relationship between the chip 23 and the alignment mark of the substrate 24 read by the upper and lower mark recognizing means 14, the stage table 12 is moved in parallel and rotated with reference to the position of the chip 23, so that the position of the substrate 24 is changed. Is adjusted, and the relative position of the chip 23 and the substrate 24 is adjusted.

  Subsequently, the upper and lower mark recognizing means 14 is retracted by the recognizing means moving table 15 in a state where the relative positions of the chip 23 and the substrate 24 are aligned (the positions of the metal bumps 23a and 24a are aligned), The head unit 26 starts to descend by the vertical drive mechanism 25, and the chip 23 and the substrate 24 are brought close to each other. The chip 23 and the substrate 24 are sandwiched between the resonator 7 and the stage 10 based on a detection signal from the pressure sensor 32 when the metal bump 23a of the chip 23 and the metal bump 24a of the substrate 24 come into contact with each other. When it is detected that a predetermined pressure is applied to the chip 23 and the substrate 24, ultrasonic vibration is applied to join the metal bumps 23a and 24a.

  At this time, the control device 31 monitors and controls ultrasonic vibration energy derived from the current value and voltage value applied to the vibrator 8, the resonance amplitude of the resonator 7, and the pressure applied to the chip 23 and the substrate 24. Done. In addition, the timing to end the bonding process is determined when the pressure, ultrasonic vibration energy, and bonding time necessary for bonding with a target bonding area are obtained in advance, and the respective values obtained in advance are reached. The bonding process may be terminated.

  In this embodiment, as an example, the transmission frequency of the vibrator 8 is set to 40 kHz, and the voltage applied to the vibrator 8 is set within a range of 0V to 10V. In this embodiment, as an example, the relative vibration amplitude between the chip 23 and the substrate 24 is configured to be about 0.1 μm to 0.5 μm. The magnitude of the vibration amplitude may be appropriately changed according to the type (material, function, etc.) and contact area of the objects to be joined and the mounted object.

  When the bonding of the chip 23 and the substrate 24 is completed and the bonding process is completed, the adsorption of the chip 23 by the resonator 7 is released, and the head portion 26 is moved back upward. Finally, with the chip 23 mounted, the substrate 24 held on the stage 10 is discharged to the substrate transport conveyor 19 by the substrate transport device 18, and a series of joining processes is completed. Note that the number of chips 23 bonded to the substrate 24 is not limited to one, and a plurality of chips 23 may be continuously bonded to the substrate 24.

  As described above, according to this embodiment, by being clamped by the contact member 21 a that contacts the resonator 7 with the contact portion 21 c and the pressing member 21 b that presses the resonator 7 against the contact member 21 a. Although the resonator 7 is supported, the pressing member 21b is configured such that the pressing portion 21e of the buffer structure portion 21f (spring structure 21h) provided on the main body portion 21d of the pressing member 21b is the first and second covers of the resonator 7. In order to press the resonator 7 in contact with the support portions 41, 42, the vibration of the resonator 7 transmitted to the support device 44 is absorbed by the spring structure 21 h of the buffer structure portion 21 f, and the resonator 7 is supported by the support device 44. Is suppressed, and the resonator 7 and the support device 44 are prevented from vibrating in an integrated manner. Therefore, as in the prior art, a special structure that forms a flange structure, a rib, or the like in the resonator 7 is used. No processing Both can be clamped anywhere in the resonator 7 to support the resonator 7 so as not shift the natural frequency.

  Therefore, even if the resonator 7 is not specially processed as in the prior art, the buffer structure portion 21f is provided at the portion where the pressing members 21b and 22b of the first and second clamp means 21 and 22 are in contact with the resonator 7. Thus, since the resonator 7 can be clamped and supported so that the natural frequency does not shift, the manufacturing cost of the resonator 7 can be greatly reduced.

  By the way, conventionally, when the resonator is clamped and supported in direct contact with the resonator that vibrates ultrasonically, the contact portion between the resonator and the clamping means is fused by friction or due to vibration in the vibration transmission direction of the resonator. Since the contact surface of the resonator with the clamp means undulates in one direction, the resonator supported by the clamp means may move in the vibration transmission direction, and the position of the resonator supported by the clamp means may be displaced. Therefore, a vibration damping structure such as a convex part or a flange structure is integrally formed in the resonator, and the resonator is supported by clamping the convex part or the flange structure in a state where the vibration of the resonator is sufficiently damped. It was the common technical knowledge of those skilled in the art.

  However, as described above, the greatest feature of this embodiment is to directly clamp and support the resonator that vibrates ultrasonically, which has been difficult to conceive in view of conventional technical common sense. With this configuration, since it is not necessary to form a convex portion or a flange structure as a vibration damping structure in the resonator, the degree of freedom in designing the resonator can be greatly improved.

  In addition, providing the slits 21g in the pressing members 21b and 22b is practical because the spring structure 21h having a spring force in the direction of pressing the resonator 7 can be easily formed in the buffer structure 21f.

  Further, when the bonding object and the mounted object are bonded by ultrasonic vibration in the bonding apparatus 100, when the resonator 7 is heated by a heater or the like (not shown) to heat the bonded object and the mounted object, Even if heat is transferred from the heated resonator 7 to the support device 44 and the pressing members 21b and 22b are heated to high temperatures, the vibration absorbing function due to the structure of the buffer structure portion 21f does not deteriorate. In the state where 7 is supported by the support device 44, the above-described joining operation can be appropriately executed.

Second Embodiment
A second embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a diagram showing a second embodiment of a resonator support device. FIG. 6 is a diagram showing different states of the resonator support device of FIG. This embodiment is different from the first embodiment described above in that the first clamping means 121 includes a toggle mechanism 200 as shown in FIG. Since other configurations and operations are the same as those in the first embodiment, description of the configurations and operations will be omitted by giving the same reference numerals and equivalent symbols. In this embodiment, the second clamping means includes the same toggle mechanism 200 as the first clamping means 121, but the configuration and operation thereof are the same as the configuration and operation of the toggle mechanism 200 provided in the first clamping means 121. Therefore, description of the configuration and operation thereof will be omitted by describing the configuration and operation of the toggle mechanism 200 provided in the first clamping means 121.

  As shown in FIG. 5, the support device 144 includes toggle mechanisms 200 having substantially the same configuration on both sides of the abutting member 121a fixedly disposed on the base 120. Hereinafter, one toggle mechanism is described below. By describing the configuration and operation of 200, the configuration and operation of the other toggle mechanism 200 are denoted by the same reference numerals, and the description of the configuration and operation is omitted.

  The toggle mechanism 200 is formed by an abutting member 121a and a pressing member 121b that are pivotally supported by a connecting pin 201, and a connecting member 202 that connects the abutting member 121a and the pressing member 121b. That is, the pressing member 121b is directed inward so that the shock absorbing structure 121f having the spring mechanism 121h formed by providing the slit 121g contacts and presses the resonator 7, and is pivoted to the abutting member 121a. It is supported.

  The connecting member 202 is formed by pivotally supporting one ends of the first connecting body 202a and the second connecting body 202b provided with the operation lever 203 by a connecting pin 202c, and the other end of the first connecting body 202a. Is a connecting piece that is pivotally supported by a connecting pin 204 on a base 120 on which a contact member 121a is fixedly arranged, and the other end of the second connecting body 202b extends to an outer portion of the buffer structure 121f of the pressing member 121b. Are pivotally supported by a connecting pin 205.

  With this configuration, in the unlocked state shown in FIG. 5, the operation lever 203 is moved in the direction of the arrow in the figure in a state where the resonator 7 is disposed so as to contact the contact portion 121 c of the contact member 121 a. When the toggle mechanism 200 is switched to the locked state by being operated, the resonator 7 is pressed against the contact portion 121c by the two pressing portions 121e of the pressing member 121b as shown in FIG. The resonator 7 is clamped and supported by the first clamping means 121 by being clamped from three directions by the contact portion 121 c and the two pressing portions 21 e.

  With this configuration, when the operation lever 203 is operated in the direction of the arrow in FIG. 6 in the locked state shown in FIG. 6 and the toggle mechanism 200 is switched to the unlocked state, as shown in FIG. Since the pressing state of the resonator 7 against the contact portion 121c of the resonator 7 by the two pressing portions 121e is released, the support state of the resonator 7 by the first clamping means 121 is released, and the resonator 7 is removed from the support device 144. Can be removed.

  As described above, in this embodiment, the same effects as those of the first embodiment described above can be achieved, and the following effects can be achieved. That is, in the locked state of the toggle mechanism 200 formed by the contact member 121a and the pressing member 121b and the connecting member 202 that connects the contact member 121a and the pressing member 121b, the resonator is operated by the contact member 121a and the pressing member 121b. 7 is clamped. Compared with the configuration of the first clamping means 21 that clamps and supports the resonator 7 by fixing the contact member 21a and the pressing member 21b with bolts 43 shown in FIGS. In the first clamping means 121 of this embodiment shown in FIGS. 5 and 6, the resonator 7 can be clamped and supported easily by one touch, and the resonator 7 can be detached from the support device 144.

  At this time, the pressing portion 121e of the spring structure 121h included in the buffer structure 121f of the pressing member 121b comes into contact with the resonator 7 so that the resonator 7 is clamped and supported, and the spring structure 121h supports the vibration of the resonator 7. Since transmission to 144 is suppressed, when the resonator 7 is clamped and supported by the first clamp means 121, even if a slight displacement occurs in the clamp position of the resonator 7 by the first clamp means 121, the resonator 7 can properly resonate at a predetermined natural frequency.

  Further, in the first clamping means 121, the toggle mechanism 200 shifts to the locked state, whereby the pressing portion 121e of the spring structure 121h contacts the resonator 7 and the resonator 7 is clamped and supported. As in the first clamp means 21 shown in FIG. 4, the clamp state of the resonator 7 by the first clamp means 21 cannot be finely adjusted by adjusting the tightening state of the bolts 43. However, when the toggle mechanism 200 shifts to the locked state and the pressing portion 121e of the spring structure 121h comes into contact with the resonator 7, the spring structure 121h elastically deforms in the direction in which the resonator 7 is pressed, thereby causing the resonator 7 to move. The clamp state is finely adjusted.

  Therefore, when the toggle mechanism 200 shifts to the locked state, the design size of the object to be clamped by the first clamping means 121 and the size of the portion clamped by the first clamping means 121 of the resonator 7 are reduced. Even if a slight manufacturing error occurs, the first clamping means 121 can appropriately clamp and support the resonator 7.

  Further, as shown in FIG. 6, a jig (not shown) having a locking member fixedly arranged below the operation lever 203 when the support device 144 in a state of supporting the resonator 7 is lowered by the vertical drive mechanism 25. ) May be further provided. With this configuration, as the support device 144 is lowered, the locking member fixedly disposed below the operation lever 203 is locked to the lower side of the operation lever 203, and the support device 144 is further lowered, thereby engaging the engagement device 144. Since the operation lever 203 locked by the stop member moves in the direction of the arrow in FIG. 6, the lock state of the support device 144 can be released by the jig.

  Further, as shown in FIG. 5, the support device 144 in a state where the resonator 7 is disposed so as to contact the contact portion 121 c in the unlocked state is lifted by the vertical drive mechanism 25 as shown in FIG. 5. In this case, it is preferable that the operation lever 203 is fixedly disposed above the operation lever 203. With this configuration, as the support device 144 is raised, the locking member fixedly disposed above the operation lever 203 is locked to the upper side of the operation lever 203, and the support device 144 is further lifted to lock the support device 144. Since the operation lever 203 engaged with the member moves in the direction of the arrow in FIG. 5, the support device 144 can be locked with the resonator 7 supported by the jig. Therefore, by using the jig configured as described above, the resonator 7 can be easily and automatically replaced as necessary.

<Third Embodiment>
A third embodiment of the present invention will be described with reference to FIG. FIGS. 7A and 7B are views showing a third embodiment of a resonator support device, in which FIG. 7A is an enlarged view of a main part, and FIG. This embodiment is different from the first and second embodiments described above, as shown in FIGS. 7A and 7B, the buffer structure portion of the pressing member 221b included in the first clamping means 221 of the support device 244. The point 221f is provided with a diaphragm structure 221h formed by providing the cavity 221g. Since other configurations and operations are the same as those in the first embodiment, description of the configurations and operations will be omitted by giving the same reference numerals and equivalent symbols.

  In this embodiment, the second clamp means includes the same diaphragm structure 221h as the first clamp means 221, but the configuration and operation thereof are the same as the configuration and operation of the diaphragm structure 221h included in the first clamp means 221. Therefore, the description of the configuration and operation thereof will be omitted by describing the configuration and operation of the diaphragm structure 221h included in the first clamp means 221. Hereinafter, the configuration and operation of the other pressing member 221b will be described by explaining the configuration and operation of one pressing member 221b out of the two pressing members 221b included in the first clamping means 221. Description of is omitted.

  As in the first and second embodiments described above, the pressing member 221b has a buffer structure portion 221f having a pressing portion 221e that contacts the outer peripheral surface of the first supported portion 41 of the resonator 7 at the tip of the main body portion 221d. Is provided.

  The buffer structure portion 221f is provided with a diaphragm structure 221h formed by providing cavities 221g formed alternately in parallel with the pressing portions 221e from both sides of the plate-like member constituting the main body portion 221d. Yes. The diaphragm structure 221h has a diaphragm 221i formed by providing a cavity 221g substantially parallel to the pressing portion 221e. The vibrating surface 221j of the diaphragm 221i is pressed by the pressing portion 221e against the resonator 7. It is formed substantially orthogonal to the direction of

  With this configuration, the pressing member 221b is configured such that the pressing portion 221e of the buffer structure portion 221f (diaphragm structure 221h) provided on the main body portion 221d of the pressing member 221b contacts the first supported portion 41 of the resonator 7. In order to press the resonator 7, the vibration of the resonator 7 transmitted to the support device 244 is absorbed by the diaphragm structure 221h of the buffer structure portion 221f, and the vibration of the resonator 7 is transmitted to the support device 244. It is suppressed and the resonator 7 and the supporting device 244 are prevented from vibrating integrally, so that the same effect as that of the first embodiment described above can be obtained.

  Further, by providing the cavity 221g in the pressing member 221b, the diaphragm structure 221h in which the vibration surface 221j is formed substantially orthogonal to the direction in which the resonator 7 is pressed can be easily formed in the buffer structure portion 221f. Therefore, it is practical.

<Fourth embodiment>
A fourth embodiment of the present invention will be described with reference to FIG. FIG. 8 is a diagram showing a fourth embodiment of a resonator support device. This embodiment differs from the first embodiment described above in that, as shown in FIG. 8, the contact member 21a of the first clamp means 21 of the support device 44 has an air outlet port 301 and an exhaust port 302 at both ends. A ventilation hole 303 is provided, cooling air is supplied from the blowing means (not shown) to the blowing port 301, and the supplied air is exhausted from the exhaust port 302, whereby the first clamping means 21. Is the point to be cooled. In this embodiment, the resonator 7 is heated by a heater (not shown) (corresponding to the “heating means” of the present invention), so that the object to be joined is heated in the joining operation described above. Yes. In addition, the position of the ventilation port 301 and the exhaust port 302 formed in the 1st clamp means 21, and the arrangement | positioning aspect and the number of arrangement | positioning to the 1st clamp means 21 of the ventilation hole 303 are restricted to the example shown in FIG. Instead, the arrangement mode and the number of arrangement of the vent holes 303 in the first clamp means 21 may be changed as appropriate according to the size and shape of the first clamp means 21.

  Since other configurations and operations are the same as those in the first embodiment, description of the configurations and operations will be omitted by assigning the same reference numerals. In this embodiment, the second clamp means 22 includes the same vent hole 303 as the first clamp means 21, but the configuration and operation thereof are the same as the configuration and operation of the vent hole 303 provided in the first clamp means 21. Therefore, description of the configuration and operation thereof will be omitted by describing the configuration and operation of the vent hole 303 provided in the first clamp means 21.

  As described above, the “cooling means” of the present invention is configured by the air blowing means and the vent hole 303, and the first clamp means 21 is air-cooled, but a liquid cooling hole is formed in the contact member 21a. The first clamp means 21 may be liquid cooled by supplying liquid such as cooling water or oil to the formed liquid cooling hole. Further, the first clamping means 21 may be cooled by a cooling element such as a Peltier element. If the first clamping means 21 can be reliably cooled, how the “cooling means” of the present invention is configured. Also good.

  With this configuration, when the resonator 7 is heated by a heating unit such as a heater, the first clamp unit 21 is cooled by the cooling unit, whereby heat is conducted from the heated resonator 7 so that the first is performed. Since it is possible to prevent the temperature of the 1 clamp means 21 and the base 20 from rising, it is possible to prevent the heat of the heated resonator 7 from being conducted to the resonator support 6 of the bonding apparatus 100.

  The present invention is not limited to the above-described embodiment, and various modifications other than those described above can be made without departing from the spirit of the present invention. The configurations described in the embodiments may be combined in any way. For example, the buffer structures 21f, 121f, and 221f may be formed of an elastic member such as urethane rubber, silicon rubber, or resin. If comprised in this way, it will prevent that the vibration of the resonator 7 is more efficiently transmitted to a clamp means by the elasticity of an elastic member by forming buffer structure part 21f, 121f, 221f by an elastic member. Can do.

  Further, the buffer structure provided in the buffer structure portion is not limited to the above example, and a diaphragm type air cylinder or the like may be provided in the buffer structure portion. Further, the number of slits 21g and 121g forming the spring structures 21h and 121h and the number of cavities 221g forming the diaphragm structure 221h are not limited to the above-described examples. There may be three or more. In short, it is only necessary that transmission of vibration of the resonator 7 to the support device is reliably suppressed.

  In addition, the shape, material, size, etc. of the resonator are not limited to the above example, and may be any one. The length in the central axis direction of the resonator is one wavelength of the resonance frequency of the resonator. Not only the length but also any length. Further, the support positions of the resonators by the support devices 44, 144, and 244 are not limited to two places as in the above-described example. For example, when supporting a resonator having a half wavelength length of the resonance frequency, It may be sufficient to support only one place of the resonator, and may be appropriately changed according to the length and size of the resonator, for example, by increasing the number of resonator support positions by the support devices 44, 144, and 244. .

  Further, the number of the abutting members and pressing members provided in the clamping means is not limited to the above-described example, and at least one each may be provided, and two or more of them may be provided.

  The present invention can be widely applied to a resonator support device including clamp means for clamping and supporting the resonator.

7 ... Resonator 21, 121, 221 ... First clamping means 22 ... Second clamping means 21a, 22a, 121a ... Abutting members 21b, 22b, 121b, 221b ... Pressing members 21d, 221d ... Main body parts 21f, 121f, 221f ... buffer structure part 21g, 121g ... slit 21h, 121h ... spring structure 44, 144, 244 ... support device 200 ... toggle mechanism 202 ... connecting member 221g ... cavity 221h ... diaphragm structure 221j ... vibration surface 301 ... air blowing port (cooling means) )
302 ... Exhaust port (cooling means)
303 ... Ventilation hole (cooling means)

Claims (3)

In a resonator support device comprising clamping means for clamping and supporting the resonator,
The clamping means includes
A contact member that contacts the outer surface of the resonator;
A pressing member that presses the outer surface of the resonator with the resonator sandwiched between the contact member and presses the resonator against the contact member;
The pressing member includes a main body portion and a buffer structure portion provided in the main body portion, the buffer structure portion contacts the resonator to press the resonator, and the resonator is brought into contact with the resonator. Clamp the resonator by clamping it directly between the members ,
The buffer structure part has a spring structure formed by the slit is provided in the pressing member, the spring structure, resonator characterized in that it have a spring force in a direction for pressing the resonator Support device. The clamping means includes
A toggle mechanism formed by the contact member and the pressing member; and a connecting member that connects the contact member and the pressing member; and when the toggle mechanism is in a locked state, the contact member and the pressing member The resonator support device according to claim 1, wherein the resonator is clamped by a member. 3. The resonator support device according to claim 1, further comprising a heating unit that heats the resonator and a cooling unit that cools the clamp unit.

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