JP7312961B2 - Parts mounting device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component mounting apparatus that holds a component in a component holding suction nozzle and mounts it on a board.

2. Description of the Related Art In a component mounting apparatus that mounts components on a board to produce a mounting board, a component holding suction nozzle (hereinafter simply referred to as "nozzle") provided in a mounting head sucks and holds electronic components with negative pressure. This type of component mounting apparatus is configured so that the nozzle can be exchangeably mounted on a nozzle holder provided in the mounting head. This makes it possible to change the type of nozzle according to the shape and size of the component to be worked, and to detach the nozzle for maintenance (see, for example, Patent Document 1).

In the prior art disclosed in Patent Document 1, in a structure in which a nozzle is sandwiched and held by a pair of clamp members to form a nozzle unit, a structure is adopted in which an elongated coil spring is circularly wound around the outer periphery of the clamp members. As a result, the position of the clamp member can be fixed by pressing it against the nozzle from the outer peripheral side, and the nozzle can be detachably held with a simple configuration.

JP 2010-177488 A

However, the prior arts shown in the above patent document examples have the following problems due to the fixing method of the nozzles. That is, in the above-described configuration, since the coil spring is wound around the outer periphery of the clamp member and the clamp member is pressed against the nozzle, the outer diameter size of the single nozzle unit is defined by the outer periphery of the annular coil spring that surrounds the clamp member. For this reason, there is a limit to reducing the size of the outer diameter of the nozzle unit, and as a result, it has been difficult to meet the demand for reducing the nozzle pitch in the mounting head.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a component mounting apparatus that has a mounting head that detachably holds component holding suction nozzles on the nozzle unit, and that can reduce the outer diameter size of the nozzle unit and reduce the nozzle pitch of the mounting head.

The component mounting apparatus of the present invention includes a vertically elongated shaft in which is formed a downward-opening storage hole that is the terminal end of a suction path leading to a negative pressure generating source, a component holding suction nozzle having a head that can be inserted into the storage hole and a suction path that is formed therein, and a convex portion that can swing vertically along the axis of the shaft about a fulcrum located on the outer peripheral surface of the shaft and can be engaged with the head inserted in the storage hole.and an operating portion provided to extend on the side opposite to the convex portion across the fulcrum;haveWhen the operating portion is pressed toward the shaft, the convex portion swings away from the shaft.an annular groove formed on the outer circumference of the shaft and sandwiched between the fulcrum and the projection; a backing member that abuts against the outer surface of the clamping lever at a position where the clamping lever overlaps the annular groove and both ends protruding from the clamping lever are bent toward the annular groove; and at least one elastic member for pressing.

According to the present invention, in a configuration including a mounting head that detachably holds component holding suction nozzles on a nozzle unit, the outer diameter size of the nozzle unit can be reduced, and the nozzle pitch of the mounting head can be reduced.

1 is a perspective view showing the configuration of a component mounting device according to one embodiment of the present invention; FIG. 1 is a front view of a nozzle unit used in a component mounting apparatus according to one embodiment of the present invention; FIG. FIG. 2 is a right side view of a nozzle unit used in the component mounting device according to one embodiment of the present invention; 1 is a left side view of a nozzle unit used in a component mounting apparatus according to one embodiment of the present invention; FIG. 1 is a longitudinal sectional view of a nozzle unit used in a component mounting apparatus according to one embodiment of the present invention; FIG. 1 is a longitudinal sectional view of a nozzle unit used in a component mounting apparatus according to one embodiment of the present invention; FIG. 1 is a cross-sectional view of a nozzle unit used in a component mounting apparatus according to one embodiment of the present invention; FIG. FIG. 2 is an explanatory diagram of the shape of a shaft that constitutes a nozzle unit used in a component mounting apparatus according to an embodiment of the present invention; FIG. 2 is an explanatory diagram of the shape of a shaft that constitutes a nozzle unit used in a component mounting apparatus according to an embodiment of the present invention; FIG. 2 is an explanatory diagram of the configuration of a component holding suction nozzle used in a nozzle unit used in a component mounting apparatus according to an embodiment of the present invention; FIG. 2 is a cross-sectional view of a component holding suction nozzle used in a nozzle unit used in a component mounting apparatus according to an embodiment of the present invention; FIG. 2 is a cross-sectional view of a component holding suction nozzle used in a nozzle unit used in a component mounting apparatus according to an embodiment of the present invention; FIG. 2 is a perspective view of a coupling member and a restraining member used in a component holding suction nozzle of a nozzle unit used in a component mounting apparatus according to an embodiment of the present invention; Functional explanatory diagram of a nozzle unit used in the component mounting apparatus of one embodiment of the present invention Functional explanatory diagram of a nozzle unit used in the component mounting apparatus of one embodiment of the present invention FIG. 1 is an explanatory diagram of the configuration of a cartridge for a component mounting apparatus according to an embodiment of the present invention;

Embodiments of the present invention will now be described with reference to the drawings. First, referring to FIG. 1, the overall structure of a component mounting apparatus 1 according to this embodiment will be described. The component mounting apparatus 1 has a function of holding a component by vacuum suction with a component holding suction nozzle and mounting the component on a substrate. In FIG. 1, a substrate transfer mechanism 2 having a pair of transfer conveyors extending in the X direction (substrate transfer direction) is arranged at the center of the base 1a. The substrate transport mechanism 2 receives the substrate 3 on which components are to be mounted from the upstream device, transports it, and positions and holds it at the mounting work position by the component mounting mechanism described below.

A component supply unit 4 is arranged on both sides of the board transfer mechanism 2 . The component supply unit 4 is configured by arranging a plurality of tape feeders 5 side by side on a feeder table 4a. The tape feeder 5 pitch-feeds the carrier tape containing the components to be mounted on the substrate 3, thereby supplying the components to be mounted to the component pick-up position by the mounting head 8 of the component mounting mechanism.

Next, the component mounting mechanism will be described. A Y-axis beam 6 having a linear driving mechanism is provided at the end of the base 1a in the X direction, and an X-axis beam 7 having a linear driving mechanism is attached to the Y-axis beam 6 so as to be movable in the Y direction. A plate member 9 is attached to the X-axis beam 7 so as to be movable in the X direction, and a mounting head 8 is attached to the plate member 9 via a holding frame 10 .

The mounting head 8 is provided with a plurality of nozzle shafts each having a nozzle unit 11 at its lower end, which will be described below. The mounting head 8 moves horizontally in the X and Y directions by driving the Y-axis beam 6 and the X-axis beam 7 . By moving the mounting head 8 to the component supply section 4 and raising and lowering the nozzle unit 11 with respect to the component pick-up position of the tape feeder 5, the mounting head 8 sucks and holds the component by means of the nozzle unit 11. FIG. Then, the mounting head 8 is moved to the substrate 3 positioned and held by the substrate transport mechanism 2, and the component is mounted on the substrate 3 by causing the mounting head 8 to perform the component mounting operation.

With reference to FIGS. 2, 3, and 4, the outer shape and schematic configuration of the nozzle unit 11 of the first example of the present embodiment will be described. FIG. 2 shows a front view of the nozzle unit 11, and FIGS. 3 and 4 show arrows A and B in FIG. 1, respectively. As shown in FIGS. 2, 3, and 4, the nozzle unit 11 has an outer shape elongated in the vertical direction. The nozzle unit 11 forms a terminal end of a suction path 21 (see FIG. 5) leading to a negative pressure generation source 22 in a plurality of nozzle shafts forming a nozzle mechanism incorporated in the mounting head 8 .

The nozzle unit 11 has a structure in which a storage hole 20 opened downward is formed therein. The housing hole 20 is provided in the shaft 12 forming one end of the suction path 21 leading to the negative pressure generation source 22, and the housing hole 20 houses a functional part for sucking and holding the component. These functional parts include a component holding suction nozzle 13 which is detachably housed in a storage hole 20 in a form in which the nozzle protrudes from the entrance of the shaft 12, and a cartridge 40 (see FIG. 5) which is stored behind the entrance of the storage hole 20.

In the component mounting apparatus 1 shown in the present embodiment, the diameters of the component holding suction nozzle 13 and the cartridge 40 are made as compact as possible, and the engagement and disengagement of the component holding suction nozzle 13 and the cartridge 40 in the housing hole 20 are performed by operating a pair of clamp levers 16.

That is, as shown in FIGS. 3 and 4, clamp levers 16 are arranged in a pair of clamp lever storage grooves 12c provided in the outer surface of the shaft 12 in the vertical direction. In an annular groove 12b formed around the outer peripheral surface of the shaft 12, a backrest member 14 that abuts against the clamp lever 16 from the outer surface side and an elastic member 15 that biases the backrest member 14 in the direction of engagement with the component holding suction nozzle 13 and the cartridge 40 are arranged. A tension spring is used as the elastic member 15 here.

Further, the clamp lever 16 is capable of swinging in the vertical rotation direction with a fulcrum projection 16b (FIG. 5) as a fulcrum. By pressing the operation portion 16a of the clamp lever 16 against the chamfered portion 12a on the side surface of the shaft 12, the engagement between the component holding suction nozzle 13 and the cartridge 40 can be released.

The detailed configuration of the nozzle unit 11 for realizing such functions will be described below with reference to each drawing. First, the internal structure of the nozzle unit 11 will be described with reference to FIGS. 5 to 9. FIG. 5, 6, and 7 show the EE cross section in FIG. 4, the CC cross section in FIG. 2, and the DD cross section in FIG. 2, respectively. 8(a) and 8(b) show the front view of FIG. 2 and its longitudinal section, and FIGS. 9(a) and 9(b) show the front view of FIG. 3 and its longitudinal section, respectively.

As shown in FIGS. 5 and 6, a suction nozzle 13 for holding components is attached to the entrance portion of the housing hole 20 provided in the shaft 12 . The component holding suction nozzle 13 comprises a nozzle body 30 , a sleeve 33 and a nozzle body urging means 34 . Here, a compression spring is used as the nozzle body biasing means 34 . The nozzle main body 30 has a configuration in which a nozzle tip member 31 that abuts and sucks a component is attached to the lower end of a cylindrical insertion portion 32 in which a suction path 32a is formed. Inside the nozzle tip member 31 and the insertion portion 32, a suction path 32a is formed through which both are inserted.

The top of the sleeve 33 is provided with a head 33a that is inserted into the inlet of the housing hole 20. As shown in FIG. As shown in FIG. 6, the outer surface of the head portion 33a is provided with an engaging groove 33c for position locking. An insertion hole 33b is formed inside the sleeve 33 . The insertion portion 32 is inserted into the insertion hole 33b along the direction in which the suction path 32a extends. A nozzle body biasing means 34 is interposed between the nozzle body 30 and the sleeve 33, and the nozzle body biasing means 34 biases the nozzle body 30 downward.

Here, with reference to FIGS. 8 and 9, machined portions such as lateral holes and recesses formed on the outer peripheral surface of the shaft 12 will be described. As shown in FIGS. 8 and 9, the top of the shaft 12 is provided with an opening 20a for connecting the housing hole 20 to the suction path 21. As shown in FIGS. A chamfered portion 12a is provided on the upper portion of the shaft 12 by cutting the width of the outer surface of the shaft 12 over a substantially half height range. By cutting the width of the side surface of the shaft 12 in this way, it is possible to perform an operation of pinching the operating portion 16a of the clamp lever 16 from the outside and pressing it inward from the outer diameter of the shaft 12 .

As shown in FIGS. 8A and 9A, an annular groove 12b is formed along the entire circumference of the shaft 12 at a height position sandwiched between the fulcrum concave portion 12f and the first convex portion 16d of the clamp lever 16 on the outer circumference of the shaft 12. As shown in FIG. 7, the annular groove 12b has the function of accommodating the clamp lever biasing means 24 comprising the back support member 14 and the elastic member 15. As shown in FIG. Here, the depth dimension of the annular groove 12b is set so that the clamp lever biasing means 24 does not protrude from the outer surface of the shaft 12 as much as possible.

As shown in FIG. 9(b), the outer surface of the shaft 12 is formed with a clamp lever housing groove 12c whose one end communicates with the chamfered portion 12a and extends downward across the annular groove 12b. The clamp lever housing groove 12c has a function of housing the clamp lever 16, as shown in FIGS. As shown in FIG. 8B, the side surface of the shaft 12 in the clamp lever housing groove 12c is formed with a fulcrum concave portion 12f positioned below the chamfered portion 12a and into which the fulcrum convex portion 16b of the clamp lever 16 is fitted.

A second lateral hole 12g and a first lateral hole 12h are formed through the side surface of the shaft 12 in the clamp lever housing groove 12c below the fulcrum recess 12f. Further, on the outer peripheral surfaces facing each other at the lower end of the shaft 12, a guide groove 12e into which the guide pin 17 shown in FIG. 4 is fitted and an operation groove 12d for attaching and detaching the coupling member 18 shown in FIG.

Next, details of the clamp lever 16 will be described. A pair of clamp levers 16 are arranged on the outer peripheral surface of the shaft 12 so as to be positioned in the clamp lever storage grooves 12c. Note that it is not essential to have a pair of clamp levers 16, and at least one clamp lever 16 may be provided. The clamp lever 16 is mounted by fitting a fulcrum convex portion 16b protruding inwardly below the operating portion 16a into a fulcrum concave portion 12f. That is, each clamp lever 16 is provided so as to be able to swing vertically along the axis AX (see FIG. 8B) of the shaft 12 about a fulcrum recess 12f (see FIG. 8B), which is a fulcrum located on the outer peripheral surface of the shaft 12.

The clamp lever 16 has a first convex portion 16 d which is a convex portion that can be engaged with an engaging groove 33 c provided in a head portion 33 a inserted into the housing hole 20 . The first protrusion 16d is fitted inside the storage hole 20 via the first horizontal hole 12h and engages with the engagement groove 33c. That is, the outer peripheral surface of the shaft 12 is formed with at least one clamp lever housing groove 12c for housing the clamp lever 16, and a first lateral hole 12h provided at a position corresponding to the first projection 16d. The first convex portion 16d of the clamp lever 16 arranged in the clamp lever housing groove 12c can be inserted through the first lateral hole 12h and engaged with the head portion 33a.

As described above, the clamp lever 16 for detachably holding the component holding suction nozzle 13 on the shaft 12 is housed in the clamp lever housing groove 12c, and the clamp lever urging means 24 for pressing the clamp lever 16 inward is housed in the annular groove 12b formed on the outer surface of the shaft 12, thereby obtaining the following effects. That is, in the prior art, it was common to use a ring-shaped coil spring member to hold down the clamp lever, which is arranged in a form projecting from the shaft, from the outside. For this reason, an increase in the outer diameter size of the overall shape of the nozzle unit was unavoidable.

On the other hand, in the present embodiment, the clamp lever 16 and the clamp lever biasing means 24 are configured to minimize the overhang dimension from the outer surface of the shaft 12, so that the outer diameter size of the nozzle unit 11 can be reduced. Accordingly, the nozzle pitch can be reduced in the mounting head in which a plurality of nozzle units are arranged, and the mounting head can be made compact.

Here, the detailed configuration and function of the component holding suction nozzle 13 will be described with reference to FIGS. 10 to 13. FIG. FIG. 10 shows the outline of the component holding suction nozzle 13 . As shown in FIGS. 10A and 11A, the component holding suction nozzle 13 has a configuration in which an insertion portion 32 to which a nozzle tip member 31 that abuts and holds a component to be mounted (not shown) is fixedly mounted is held by a sleeve 33 so as to be vertically slidable, and the insertion portion 32 is biased downward by a nozzle body biasing means 34.

That is, in FIG. 11(a), a suction path 32a that opens to the lower end of the nozzle tip member 31 is formed inside the tubular insertion portion 32 to which the nozzle tip member 31 is attached. The nozzle tip member 31 and the insertion portion 32 in which the suction path 32 a is formed constitute the nozzle body 30 of the component holding suction nozzle 13 . The insertion portion 32 is inserted into an insertion hole 33b formed in the sleeve 33 along the extending direction of the suction path 32a.

The sleeve 33 has a shape in which a head portion 33a is provided at the top of a cylindrical body from which a flange portion 33f extends. Between the sleeve 33 and the nozzle tip member 31 forming the nozzle body 30, a nozzle body biasing means 34 made of a compression spring is mounted. The nozzle body urging means 34 has a function of urging the nozzle body 30 in a direction to come out of the insertion hole 33b and buffering the impact when the nozzle unit 11 is lowered to bring the nozzle tip member 31 into contact with a component. Here, a configuration example in which the nozzle body biasing means 34 is provided in the component holding suction nozzle 13 is shown.

As shown in FIG. 11A, a groove portion 32b, which is a vertically long groove, is formed in the direction in which the suction path 32a extends on the outer peripheral surface of the insertion portion 32 inserted into the insertion hole 33b. As shown in FIG. 11B, the pin-shaped coupling member 18 is inserted into the groove 32b through a coupling member insertion hole 33e penetrating from the side surface of the sleeve 33 toward the center of the insertion hole 33b. That is, the coupling member 18 is embedded in the coupling member insertion hole 33e.

In this configuration, relative movement of the insertion section 32 with respect to the sleeve 33 is permitted by longitudinal movement of the coupling member 18 within the groove 32b. That is, the nozzle body 30 can move in the direction in which the suction path 32a extends with respect to the sleeve 33 within the range where the groove portion 32b is formed.

The coupling member 18 is restrained by a restraining member 19 so as not to slip out of the groove portion 32b. The restraint member 19 is a C-shaped clip formed by bending a fine metal wire into a substantially semicircular shape, and is attachable to and detachable from the sleeve 33 by elastic deformation. That is, as shown in FIGS. 12 and 13, one end of the restraining member 19 is a bent portion 19a that is bent inward in a V shape, and the other end is a bent portion 19b that is bent inward in an L shape.

Engagement recesses 33 g and 33 h are provided on the outer periphery of the sleeve 33 corresponding to the positions of the bent portion 19 a and the bent portion 19 b of the restraining member 19 . Further, a fitting groove 18b into which the restraining member 19 is fitted is provided on the outer surface of the coupling member 18 that is inserted into the groove portion 32b through the coupling member insertion hole 33e.

When connecting the insertion portion 32 to the sleeve 33, as shown in FIG. 12, the connecting member 18 is passed through the connecting member insertion hole 33e and inserted into the groove portion 32b while the groove portion 32b is aligned with the connecting member insertion hole 33e. The coupling member 18 is formed with a through portion 18a for operation, and the coupling member 18 is operated by inserting a working tool into the through portion 18a for the operation of inserting it into the groove portion 32b. The fitting groove 18 b formed on the outer surface of the coupling member 18 is positioned on the outer peripheral surface of the sleeve 33 when the coupling member 18 is inserted into the groove portion 32 b.

In this state, the restraining member 19 is elastically deformed and attached to the sleeve 33 so that the coupling member 18 does not slip out of the groove 32b. That is, as shown in FIG. 11B, the bent portion 19a and the bent portion 19b of the restraining member 19 are engaged with the engaging recesses 33g and 33h, respectively, and the intermediate portion of the restraining member 19 is fitted into the fitting groove 18b on the outer surface of the coupling member 18.

Further, when extracting the coupling member 18 in order to separate the insertion portion 32 from the sleeve 33 , it is only necessary to elastically deform the restraining member 19 to remove it from the outer periphery of the sleeve 33 . Then, in this state, a work tool is inserted into the through portion 18a of the coupling member 18, and the coupling member 18 is pulled out. That is, in the present embodiment, as the restraining member 19 that prevents the coupling member 18 from coming off, a C-shaped clip is used, whose both ends are engaged with the engaging recesses 33g and 33h formed on the outer periphery of the sleeve 33, and whose intermediate portion is fitted into the fitting groove 18b formed on the outer surface of the coupling member 18.

By constructing the mechanism for mounting the nozzle body 30 vertically slidably with respect to the sleeve 33 while guiding the relative rotational position of the nozzle body 30 to the sleeve 33 as described above, the following effects can be obtained in comparison with the prior art. That is, in the conventional apparatus, a guide pin system in which the nozzle axis is guided by a guide pin inserted in a direction orthogonal to the nozzle axis is generally used.

In this guide pin method, when the nozzle main body 30 is detached, the guide pin itself is detached. Since this work requires a special tool for press-fitting and removing the guide pin, it is difficult to perform it at the work site of the production line.

On the other hand, in a configuration in which the binding member 18 is prevented from coming off by the binding member 19, as in the nozzle unit 11 shown in the present embodiment, the binding member 18 can be pulled out by a simple operation of elastically deforming the binding member 19 without using a dedicated tool. Therefore, the attachment and detachment work of the nozzle body 30 can be easily carried out by a simple work at the work site.

Furthermore, in the configuration in which the guide pin is inserted in the direction orthogonal to the nozzle axis, the inserted guide pin is inserted across the suction passage, so the effective cross-sectional area of the suction passage is reduced. As a result, the holding force for holding the component by vacuum suction cannot be avoided, and the performance of the component holding nozzle is degraded. On the other hand, in the nozzle unit 11 shown in the present embodiment, there is no component that blocks the suction path 32a, and high component holding capability can be ensured.

As shown in FIGS. 11(a) and 11(b), a guide pin 17 is implanted in the sleeve 33 between the annular surface 33d and the flange portion of the flange portion 33f at a position opposed to the coupling member 18. As shown in FIGS. The guide pin 17 is positioned to fit into the guide groove 12e shown in FIG. 4, and functions as a detent that defines the position of the component holding suction nozzle 13 about the axis with respect to the shaft 12. As shown in FIG.

The head 33a is formed with an engaging groove 33c with which the first protrusion 16d engages, and an annular surface 33d (see FIG. 11(a)) that contacts the inner surface of the housing hole 20 below the engaging groove 33c and below the first lateral hole 12h. With this configuration, when the component holding suction nozzle 13 is locked by the clamp lever 16, the component holding suction nozzle 13 is held at two positions, the engaging groove 33c and the annular surface 33d, and a stable holding state is realized.

At a position where the clamp lever 16 overlaps the annular groove 12b, the back support member 14 is arranged so as to contact the outer surface of the clamp lever 16. As shown in FIG. As shown in FIG. 7, both ends of the back support member 14 protruding from the clamp lever 16 are bent toward the annular groove 12b. Both ends of the back support member 14 are connected to elastic members 15 which are disposed so as to circle the annular groove 12b. The elastic member 15 is a tension spring and applies tension to the back support member 14 to press the back support member 14 against the outer surface of the clamp lever 16 . As a result, the first convex portion 16d of the clamp lever 16 is pressed against the engagement groove 33c provided in the head portion 33a of the sleeve 33, and the sleeve 33 is locked by the clamp lever 16. As shown in FIG.

That is, the elastic member 15 has a function of pressing the back support member 14 against the outer surface of the clamp lever 16 to press the first convex portion 16d against the head portion 33a. Although the elastic members 15 are connected to both sides of the backrest member 14 here, it is also possible to connect at least one elastic member 15 to only one side of the backrest member 14, that is, to the backrest member 14 to apply tension to the backrest member 14.

As shown in FIG. 5, a groove 16e having a width and depth capable of accommodating the back support member 14 is formed at a position overlapping the annular groove 12b on the outer surface of the clamp lever 16 (see FIGS. 2 and 3). When placed in the annular groove 12b, the back support member 14 contacts the groove 16e. In this state, the back support member 14 presses the clamp lever 16 inward without protruding from the outer surface of the clamp lever 16 .

In the above configuration, the back support member 14 and the elastic member 15 serve as clamp lever biasing means for biasing the first protrusion 16d and the second protrusion 16c toward the cartridge 40 side. The clamp lever biasing means 24 consisting of the back support member 14 and the elastic member 15 and the clamp lever 16 constitute a nozzle holder 25 which is a nozzle holder for mounting the component holding suction nozzle 13 on the shaft 12 with the head 33a stored in the inlet of the storage hole 20. In this embodiment, as described above, the clamp lever biasing means 24 and the clamp lever 16 are arranged so as not to protrude from the outer surface of the shaft 12 as much as possible, so that the size of the nozzle holder can be reduced.

Next, referring to FIGS. 5, 6, 14, 15, and 16, the configuration of the cartridge 40 stored above the component holding suction nozzle 13 behind the inlet of the storage hole 20 in the nozzle unit 11 of the component mounting apparatus 1, and the engagement and disengagement of the cartridge 40 in the nozzle unit 11 will be described. In FIG. 5, upper ends of a cylindrical body 41 and an air filter 42 forming a cartridge 40 are in contact with a stopper 23 mounted on the top surface of the housing hole 20 . The cartridge 40 is a cartridge for a component mounting device equipped with an air filter for removing foreign matter contained in air sucked from a component holding suction nozzle 13 of a nozzle unit 11 mounted on a mounting head 8 in the component mounting device 1. - 特許庁

As shown in FIGS. 5 and 16, the cartridge 40 is composed of a cylindrical body 41, a ventilation hole 41a, an air filter 42, an in-cartridge air flow path 43, a guide body 44, a joint 45, and a pad 46. As shown in FIG. The cartridge 40 is held in the housing hole 20 by a guide body 44 having a guide portion that contacts the inner wall of the housing hole 20 . As a result, the cartridge 40 can be stably held without rattling or vibration.

The cylindrical body 41 is mounted on the guide body 44 and is a hollow member having a cylindrical shape and air permeability in the radial direction. In this embodiment, ventilation is ensured by providing a plurality of ventilation holes 41a. The internal space of the housing hole 20 is divided by the cylindrical body 41 into an outer space 20b and an inner space 20c. It should be noted that the cylindrical body 41 and the guide body 44 may be formed integrally.

An air filter 42 made of a porous material or non-woven fabric is attached to the outer peripheral surface of the cylindrical body 41 . By arranging the air filter 42 on the outer peripheral surface of the cylindrical body 41 in this manner, the following effects can be obtained. First, although the air filter 42 is made of a fragile material and has the characteristic of being easily damaged, it can be stably held and prevented from being damaged by being mounted and held on the outer peripheral surface of the cylindrical body 41 . Further, since the air filter 42 is attached to the outer peripheral surface of the cylindrical body 41, the attachment and detachment work can be easily performed, and the filter replacement work, which is frequently performed, can be made efficient.

Furthermore, since the cartridge 40 is arranged in the storage hole 20 deeper than the nozzle holder portion, there is no restriction on the diameter due to the clamp lever 16 . This makes it possible to set the diameter sizes of the air filter 42 and the cylindrical body 41 as large as possible. Further, since the air filter 42 is mounted on the outer peripheral surface of the cylindrical body 41 having a large diameter and a large surface area, the filtration area of the air filter 42 can be set as large as possible.

Therefore, by increasing the ability of the air filter 42 to collect foreign matter, it is possible to extend the replacement life of the air filter 42 as much as possible, and it is possible to promote the reduction of maintenance costs and running costs. From this point of view, it is desirable to set the length size of the cylindrical body 41 and the air filter 42 as large as possible.

Inside the guide body 44, an in-cartridge air flow path 43 is formed for guiding the air sucked from the suction path 32a to the outer space 20b. The in-cartridge air flow path 43 is composed of a first flow path 43a that penetrates the guide body 44 in the horizontal direction and a second flow path 43b that extends downward from the first flow path 43a. The second flow path 43b communicates with a joint 45 extending downward from the guide body 44 .

A pad 46 that connects the in-cartridge air flow path 43 and the suction path 32a is attached to the lower end of the joint 45, ie, the part holding suction nozzle 13 side of the guide body 44. As shown in FIG. The pad 46 is a resin member formed by molding an elastic resin such as silicone rubber into a pad shape. When the component holding suction nozzle 13 is attached, the head portion 33a of the sleeve 33 is pressed against the pad 46, thereby establishing communication between the suction path 32a and the pad 46. As shown in FIG.

Air sucked from the suction path 32a flows into the outer space 20b through the pad 46, the joint 45, and the air flow path 43 in the cartridge, and then flows into the inner space 20c through the air filter 42 and the ventilation hole 41a. Foreign matter contained in the air during this air flow process is captured by the air filter 42 , thereby removing the foreign matter from the air sucked into the suction path 21 .

5, the clamp lever 16 is provided with a first projection 16d that can be engaged with the head portion 33a and a second projection 16c that can be engaged with the cartridge 40 below the fulcrum projection 16b. When the clamp lever biasing means 24 biases the first protrusion 16d and the second protrusion 16c toward the head 33a and the cartridge 40, the first protrusion 16d is inserted through the first lateral hole 12h and engaged with the head 33a. Along with this, the second convex portion 16c is inserted through the second lateral hole 12g and engaged with the guide end portion 44a of the guide body 44 of the cartridge 40. As shown in FIG. That is, the clamp lever 16 is configured such that the second convex portion 16 c can be engaged with the guide body 44 .

Disengagement of the component holding suction nozzle 13 and the cartridge 40 by the clamp lever 16 will be described with reference to FIGS. 14 and 15. FIG. In the nozzle unit 11 shown in this embodiment, the clamp lever 16 is provided with an operation portion 16a extending upward from a fulcrum convex portion 16b. By pressing the operating portion 16a toward the shaft 12, the first convex portion 16d and the second convex portion 16c move in the direction of releasing the engagement between the head portion 33a and the cartridge 40, respectively.

FIG. 14 shows a state in which only the component holding suction nozzle 13 is disengaged from a state in which the cartridge 40 and the component holding suction nozzle 13 are housed in the housing hole 20 and the clamp lever 16 is engaged with them. That is, when the operating portion 16a of the clamp lever 16 is first pressed toward the shaft 12 by a predetermined amount (arrow a), the clamp lever 16 swings against the clamp lever biasing means 24, and the first projection 16d at the lower end of the clamp lever 16 moves in the direction (arrow b) away from the first lateral hole 12h.

This movement of the first protrusion 16d disengages the head 33a from the engagement of the first protrusion 16d, enabling the component holding suction nozzle 13 to be taken out from the inlet portion of the storage hole 20 (arrow c). At this time, even if the clamp lever 16 swings against the aforementioned clamp lever biasing means 24 when the head 33a is removed from the first convex portion 16d, the second convex portion 16c maintains the state of being engaged with the guide end portion 44a of the guide body 44 of the cartridge 40. Therefore, in maintenance or replacement work for the cartridge 40 and the component holding suction nozzle 13 detachably mounted in the storage hole 20, only the component holding suction nozzle 13 can be selectively taken out without dropping the cartridge 40.例文帳に追加

When the component holding suction nozzle 13 is automatically replaced, the first convex portion 16d is pushed in the direction of the arrow b by the head portion 33a forcibly pulled out from the housing hole 20, and the clamp lever 16 swings. Therefore, even when the component holding suction nozzle 13 is automatically replaced, the cartridge 40 does not fall out of the housing hole 20. - 特許庁

15 shows how the clamp lever 16 is operated when the cartridge 40 is removed from the housing hole 20. FIG. When the operating portion 16a of the clamp lever 16 is pressed toward the shaft 12 and brought into contact with the chamfered portion 12a (arrow d), the clamp lever 16 further swings against the clamp lever biasing means 24, and the second protrusion 16c at the intermediate portion of the clamp lever 16 moves in the direction (arrow e) away from the second lateral hole 12g. As a result, the engagement of the guide end portion 44a with the second convex portion 16c is released, and the cartridge 40 stored on the inner side of the storage hole 20 can be taken out (arrow f).

No special tools are required for removing the component holding suction nozzle 13 and the cartridge 40 described above. Therefore, maintenance work such as replacement of the air filter 42, which must be performed frequently, can be performed efficiently at low cost.

As described above, in the component mounting apparatus shown in this embodiment, in the nozzle unit 11 arranged in the mounting head 8, the clamp levers 16 are arranged in the pair of clamp lever housing grooves 12c formed opposite to the outer peripheral surface of the shaft 12, respectively, and the clamp lever urging means 24 comprising the back support member 14 and the elastic member 15 arranged in the annular groove 12b formed around the shaft 12 press the clamp lever 16 inward. is engaged with an engaging portion provided in the component holding suction nozzle 13 , and the component holding suction nozzle 13 is held in a storage hole provided in the shaft 12 . As a result, in the configuration provided with the mounting head 8 for detachably holding the component holding suction nozzle 13 on the nozzle unit 11, the outer diameter size of the nozzle unit 11 can be reduced, and the nozzle pitch in the mounting head 8 can be reduced.

In the component mounting apparatus shown in the present embodiment, in the nozzle unit 11 arranged in the mounting head 8, the clamp lever 16 functions as a nozzle holder by being pushed inward by the clamp lever biasing means 24 composed of the back support member 14 and the elastic member 15. The clamp lever 16 is pivotable in the vertical rotation direction about the fulcrum convex portion 16b located on the outer peripheral surface of the shaft 12. The first convex portion 16d and the air can be engaged with the head portion 33a of the component holding suction nozzle 13 inserted into the storage hole 20. A second protrusion 16 c that can be engaged with the cartridge 40 having the filter 42 is provided, and the clamp lever 16 holds the component holding suction nozzle 13 and the cartridge 40 . As a result, in the structure having the air filter 42 for filtering the air sucked from the component holding suction nozzle 13, the size of the nozzle holder can be reduced, the life of the air filter 42 can be extended, and the replacement work of the air filter 42 can be facilitated.

In the component mounting apparatus shown in the present embodiment, in the nozzle unit 11 arranged in the mounting head 8, the component holding suction nozzle 13 is held by the nozzle holder 25 with the head 33a housed in the entrance portion of the housing hole 20 of the shaft 12, and the cartridge 40 is housed deeper than the entrance portion of the housing hole 20. It has an air filter 42 attached to the outer peripheral surface, a cartridge internal air flow path 43 that guides the sucked air to the outer space 20b, and a guide body 44 having a guide portion that contacts the inner wall of the housing hole 20. As a result, in the structure having the air filter 42 for filtering the air sucked from the component holding suction nozzle 13, the size of the nozzle holder can be reduced, the life of the air filter 42 can be extended, and the replacement work of the air filter can be facilitated.

In the cartridge for the component mounting device shown in the present embodiment, the component mounting device includes the component holding suction nozzle 13 having the head 33a and the suction path 32a, and the nozzle holding portion 25 as a nozzle holder for mounting the component holding suction nozzle 13 on the shaft 12 with the head 33a accommodated in the inlet portion of the storage hole 20. 0c, an air filter 42 attached to the outer peripheral surface of the cylindrical body 41, an air flow path 43 in the cartridge that guides the sucked air to the outer space 20b, and a guide body 44 having a guide portion that contacts the inner wall of the housing hole 20. As a result, in a cartridge equipped with an air filter for filtering air sucked from a component holding suction nozzle, the size of the nozzle holder can be reduced, the life of the air filter can be extended, and the replacement work of the air filter can be facilitated.

In the component holding suction nozzle shown in the present embodiment, in the nozzle unit 11 arranged in the mounting head 8, the component holding suction nozzle 13 is mounted with the head 33a housed in the inlet portion of the housing hole 20 of the shaft 12. The nozzle main body 30 has a cylindrical insertion portion 32 in which a suction path 32a is formed, the sleeve 33 has an insertion hole 33b into which the insertion portion 32 is inserted along the extending direction of the suction path 32a, and is inserted into the insertion hole 33b. A coupling member 18 is inserted through a coupling member insertion hole 33e penetrating from the side surface of the sleeve 33 toward the center of the insertion hole 33b into a groove portion 32b formed on the outer peripheral surface of the insertion portion 32, and a restraining member 19 is provided to restrain the coupling member 18 from coming out of the groove portion 32b. As a result, it is possible to provide a component holding suction nozzle that is easy to disassemble and assemble and has a high capacity to hold a component.

INDUSTRIAL APPLICABILITY The component mounting apparatus of the present invention has a configuration including a mounting head that detachably holds a component holding suction nozzle on a nozzle unit, and has the effect of reducing the outer diameter size of the nozzle unit and realizing a reduction in the nozzle pitch of the mounting head.

1 component mounting device 8 mounting head 11 nozzle unit 12 shaft 12b annular groove 12c clamp lever storage groove 12f fulcrum recess 12g second lateral hole 12h first lateral hole 13 component holding suction nozzle 14 back support member 15 elastic member 16 clamp lever 16a operating portion 16b fulcrum protrusion 16c second protrusion 16d 1 convex portion 16e groove 18 coupling member 18a through portion 18b fitting groove 19 restraining member 20 storage hole 20b outer space 20c inner space 24 clamp lever biasing means 25 nozzle holding portion 30 nozzle main body 31 nozzle tip member 32 insertion portion 32a suction path 32b groove portion 33 sleeve 33a head 33b insertion hole 33c engagement groove 33e coupling member insertion hole 34 nozzle body biasing means 40 cartridge 41 cylindrical body 41a ventilation hole 42 air filter 43 air flow path in cartridge 44 guide body 45 joint 46 pad

Claims (4)

a shaft elongated in the longitudinal direction and formed therein with a downwardly opening storage hole at the terminal end of a suction path leading to a negative pressure generation source;
a component holding suction nozzle having a head that can be inserted into the housing hole and a suction path formed therein;
at least one clamp lever that is swingable about a fulcrum located on the outer peripheral surface of the shaft in a vertical rotation direction along the axis of the shaft and that is engageable with the head inserted into the housing hole ;
an annular groove formed at a position sandwiched between the fulcrum and the projection on the outer periphery of the shaft;
a back support member that abuts against the outer surface of the clamp lever at a position where the clamp lever overlaps the annular groove, and has both ends protruding from the clamp lever bent toward the annular groove;
at least one elastic member arranged in the annular groove while being connected to both ends of the back support member, and pressing the convex portion against the head by pressing the back support member against the outer surface of the clamp lever. 2. The component mounting apparatus according to claim 1, wherein a groove is formed on the outer surface of said clamp lever at a position overlapping said annular groove, and said back support member abuts said groove. At least one clamp lever housing groove for housing the clamp lever and a lateral hole provided at a position corresponding to the projection are formed on the outer peripheral surface of the shaft,
3. The component mounting apparatus according to claim 1, wherein said protrusion of said clamp lever disposed in said clamp lever housing groove is capable of being inserted through said lateral hole and engaged with said head. 4. The component mounting apparatus according to claim 3, wherein the head has an engaging groove with which the projection engages and an annular surface that is below the engaging groove and below the lateral hole and contacts the inner surface of the housing hole.

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