KR102534305B1 - Rotatory head having multi-directional driving spindle - Google Patents

Abstract

According to an embodiment of the present invention, a rotary head for a component mounting machine having a spindle support structure capable of being driven in multiple directions has a connecting cylinder driving unit disposed above a main frame and a connecting cylinder driving unit disposed below the connecting cylinder driving unit to rotate when the connecting cylinder driving unit is driven. A connecting cylinder, a rotor housing disposed below the connecting cylinder, a spindle rotatably disposed inside the rotor housing, and a suction nozzle for adsorbing parts disposed at the bottom thereof, and a spindle disposed on the side of the main frame to rotate the spindle. It includes a spindle driving unit and a spindle raising and lowering unit disposed on one side of the upper part of the main frame to move the spindle in an up and down direction.

Description

Rotary head for component mounting machine having a spindle support structure capable of driving in multiple directions {ROTATORY HEAD HAVING MULTI-DIRECTIONAL DRIVING SPINDLE}

The present invention relates to a rotary head for a component mounting machine, and more particularly, to a support structure for a spindle capable of rotating and vertically moving among the rotary heads of a mounting machine for mounting components on a board.

A mounting machine for mounting a component on a board is configured to move a suction nozzle above a supply unit supplying the component to pick up the component, move it to the top of the board, and mount the component to a predetermined position on the board.

These mounting machines generally have a piano-type mounting machine in which a head composed of several suction nozzles moves in the X-axis and Y-axis to increase the mounting efficiency of parts, and individual suction nozzles move in the Z-axis on the head, and the head rotates. And, there is a rotary type mounting machine in which the adsorption nozzle on the head rotates.

In the double piano type mounting machine, it is difficult to mount by rotating the part when the part cannot be picked up at a correct angle, so a rotary type mounting machine has recently been developed and used.

This mounting machine is arranged so that the spin on which the adsorption nozzle is installed can rotate and move up and down on the head. Therefore, in order to implement accurate and fast component mounting, the spindle must rotate and move up and down accurately and quickly.

However, since various structures for supplying air pressure are installed inside the spindle, and the length is relatively long for rotation, interference may occur during rapid vertical movement.

Japanese Patent Laid-Open No. 2004-186384 (published on July 2, 2004)

The rotary head for a component mounting machine having a spindle support structure capable of being driven in multiple directions according to the present invention is intended to minimize shaking during rotation and vertical movement of the spindle.

In addition, it is intended to minimize interference with other components during vertical movement of the spindle.

A head for a component mounting machine capable of precise driving control according to an embodiment of the present invention includes a connecting cylinder driving unit disposed above a main frame, a connecting cylinder disposed below the connecting cylinder driving unit and rotating when the connecting cylinder driving unit is driven, A rotor housing disposed under the connecting cylinder, a spindle rotatably disposed inside the rotor housing and having an absorption nozzle for adsorbing parts disposed thereunder, and a spindle drive unit disposed on a side surface of the main frame to rotate the spindle; It is disposed on one side of the upper part of the main frame and includes a spindle raising and lowering unit for moving the spindle in an up and down direction.

The connecting cylinder driving part of the head for a component mounting machine capable of precise driving control according to an embodiment of the present invention is composed of an outer housing coupled to the main frame and an inner housing rotatably disposed below the outer housing, and the outer housing and A rotor, a motor core, and a stator coil wound around the motor core are disposed between the inner housings.

According to an embodiment of the present invention, a connection cylinder support frame is disposed in one direction on the upper part of the main frame of the head for a component mounting machine capable of precise drive control, and the outer housing is formed in a cylindrical shape and fixed to the lower portion of the connection cylinder support frame. The inner housing is composed of a cylindrical support at the center and a disk-shaped lower base at the lower end of the support, the rotor is disposed on the outer surface of the support, and the motor core is preferably disposed on the inner surface of the outer housing.

According to an embodiment of the present invention, a connecting cylinder support frame of a head for a component mounting machine capable of precise driving control, a through hole is formed in the lower base to correspond to the inner surface of the support part, and a pneumatic supply pipe for supplying air pressure is disposed in the through hole. it is desirable to be

It is preferable that the upper end of the connection cylinder of the head for a component mounting machine capable of precise drive control according to an embodiment of the present invention communicates with the through hole and has a pneumatic supply pipe extending therein.

It is preferable that the pneumatic supply pipe of the head for a component mounting machine capable of precise driving control according to an embodiment of the present invention is a flexible pneumatic hose.

According to an embodiment of the present invention, a rotary head for a component mounting machine having a spindle support structure capable of being driven in multiple directions has a connecting cylinder driving unit disposed above a main frame and a connecting cylinder driving unit disposed below the connecting cylinder driving unit to rotate when the connecting cylinder driving unit is driven. A connecting cylinder, a rotor housing disposed below the connecting cylinder, a spindle rotatably disposed inside the rotor housing, and a suction nozzle for adsorbing parts disposed at the bottom thereof, and a spindle disposed on the side of the main frame to rotate the spindle. It includes a spindle driving unit and a spindle raising and lowering unit disposed on one side of the upper part of the main frame to move the spindle in an up and down direction.

A spindle driving gear that rotates around the connecting cylinder when the spindle driving unit is driven is disposed in the connection cylinder of the rotary head for a component mounting machine having a spindle support structure that can be driven in multiple directions according to an embodiment of the present invention, and the spindle drives the spindle. It is preferable to arrange a shaft rotation gear meshing with the gear.

The spindle of the rotary head for a component mounting machine having a spindle support structure capable of being driven in multiple directions according to an embodiment of the present invention includes a cylindrical shaft, a shaft housing through which the shaft is disposed through, and an upper portion of the shaft housing. It includes an upper bush disposed on the upper bush and a lower bush disposed on the lower part of the shaft housing, the shaft rotation gear is disposed on the upper part of the shaft, and between the shaft rotation gear and the upper bush, the restoring force when the spindle lifting unit moves the spindle to the lower part. It is preferable that the coil spring generating the is disposed, and the upper bush, the shaft housing and the lower bush are disposed within the rotor housing.

A plurality of spindle insertion holes into which spindles are inserted are formed in the rotor housing of a rotary head for a component mounting machine having a spindle support structure capable of being driven in multiple directions according to an embodiment of the present invention, and an upper bush and a lower bush are inner surfaces of the spindle insertion hole. It is in close contact with, and the shaft housing is preferably disposed spaced apart from the inner surface of the spindle insertion hole.

Sealing seating grooves are formed on the upper and lower outer surfaces of the shaft housing of the rotary head for a component mounting machine having a spindle support structure capable of being driven in multiple directions according to an embodiment of the present invention, between the shaft housing and the upper bush, and between the shaft housing and Preferably, a first seal and a second seal are disposed between the lower bushes and adhered to the inner surface of the spindle insertion hole, and a third seal adhered to the inner surface of the spindle insertion hole is disposed in the seal seating groove.

A rotary head pneumatic supply structure for a component mounting machine according to an embodiment of the present invention includes a connecting cylinder rotatably disposed on a main frame, a connecting cylinder driving unit disposed above the main frame to rotate the connecting cylinder, and an outer surface of the connecting cylinder. A plurality of spindles rotatably disposed on the lower side, a spindle driving unit disposed on one side of the side of the main frame to rotate the plurality of spindles, and a spindle disposed on the other side of the side of the main frame to move at least one of the plurality of spindles up and down. It consists of an ascending and descending part, and an adsorption nozzle for adsorbing parts using air pressure is disposed at the lower end of the spindle, and the air pressure supplied to the spindle is supplied through the inner surface of the connecting cylinder.

A pneumatic supply hose is disposed on the inner surface of the connecting cylinder of the rotary head pneumatic supply structure for a component mounting machine according to an embodiment of the present invention, and a distribution socket having a through hole formed in the direction of the inner surface of the connecting cylinder is coupled to the end of the pneumatic supply hose, It is preferable that a pneumatic connecting hole communicating with the inner surface of the connecting cylinder is formed on the lower outer surface of the connecting cylinder at a position corresponding to the distribution socket, and when the connecting cylinder is rotated by the connecting cylinder driving unit, the connecting cylinder rotates around the distribution socket. do.

The pneumatic supply hose of the rotary head pneumatic supply structure for a component mounting machine according to an embodiment of the present invention is preferably formed of a flexible material.

It is preferable that bearings are disposed on the outer surface of the distribution socket and the inner surface of the connecting cylinder of the rotary head pneumatic supply structure for a component mounting machine according to an embodiment of the present invention.

The rotary head for a component mounting machine having a spindle support structure capable of being driven in multiple directions according to the present invention can be expected to minimize shaking during rotation and vertical movement of the spindle.

In addition, the effect of minimizing interference with other components during vertical movement of the spindle can be expected.

Effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

1 is a front view of a head for a component mounting machine capable of precise driving control according to an embodiment of the present invention.
FIG. 2 is a side view of a head for a component mounting machine capable of precise driving control shown in FIG. 1 .
Figure 3 is a cross-sectional view of the main part of the connecting cylinder driving unit shown in Figure 1;
FIG. 4 is a cross-sectional view of a main part of the connecting cylinder connected to the connecting cylinder driver shown in FIG. 3 .
Figure 5 is a front view of the spindle shown in Figure 1;
6 is a cross-sectional view of main parts of a state in which a spindle is coupled to the rotary head shown in FIG. 1;
FIG. 7 is an enlarged cross-sectional view of a main part of a spindle disposed in the shaft housing shown in FIG. 6 .

With reference to the accompanying drawings, a preferred embodiment according to the present invention will be described in detail, but the same or similar components are assigned the same reference numerals regardless of reference numerals, and redundant description thereof will be omitted.

In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may obscure the gist of the present invention, the detailed description will be omitted. In addition, it should be noted that the accompanying drawings are only for easily understanding the spirit of the present invention, and should not be construed as limiting the spirit of the present invention by the accompanying drawings.

Hereinafter, referring to FIGS. 1 to 7 , a head for a component mounting machine capable of precise driving control according to an embodiment of the present invention (hereinafter, referred to as a 'head for mounting machine') will be described.

A connecting cylinder shown in FIGS. 2 and 1, which are side views of the head for a component mounting machine capable of precise driving control shown in FIGS. Referring to FIG. 3 , which is a cross-sectional view of the main part of the drive unit, the mounting machine head includes a connecting cylinder drive unit 200, a connecting cylinder 280, a rotor housing 620, a spindle 610, and a spindle drive unit 400 centering on the main frame 100. ), and the spindle elevating unit 300.

The connection cylinder driving unit 200 rotates the connection cylinder 280 by rotating the connection flange 222 connected to the connection cylinder 280, and the rotor housing 620 is disposed in the connection cylinder 280 to connect When the cylinder 280 rotates, the rotor housing 620 rotates based on the center of rotation of the connecting cylinder 280 .

As shown in FIG. 1, the rotor housing 620, which rotates when the connecting cylinder 280 rotates, adsorbs components (not shown) from the component supply unit (not shown) at the bottom to obtain from the substrate supply unit (not shown). A spindle 610 having an adsorption nozzle 630 capable of mounting a component at a predetermined position on a supplied substrate (not shown) is rotatably disposed through.

At this time, the spindle driving unit 400 for rotating the spindle 610 on the rotor housing 620 is disposed on the side of the main frame 100, and the spindle 610 moves up and down on one side of the upper part of the main frame 100. A spindle elevating unit 300 is disposed.

The spindle driving unit 400 is for rotating the spindle 610, rotates the spindle driving gear 410 as shown in FIG. 1 on the rotor housing 620, and rotates the shaft rotation gear of the spindle 610 to be described later ( 640a) is meshed with the spindle drive gear 410 to rotate the spindle 610.

Since the spindle driving unit 400 is an essential component for the rotation of the spindle 610 but is not a major feature in the present invention, a detailed description of the spindle driving unit 400 will be omitted below.

In addition, the spindle lifting unit 300 moves the spindle 610 up and down by pressing the pressure knob 641 shown in FIGS. 5 and 6, and is not a main feature in the present invention like the spindle driving unit 400. A detailed description will be omitted.

Looking at the connecting cylinder driving unit 200 for rotating the connecting cylinder 280 in more detail with reference to FIG. The inner housing 220 rotatably disposed under the outer housing 230 and the inner housing 220, the rotor 240 disposed between the outer housing 230 and the inner housing 220, the motor core 250, and the stator wound around the motor core 250. It is composed of coils 250 and when power is applied to the stator coil 250, the housing to which the motor core 250 is coupled rotates.

The outer housing 230 is a housing constituting the side and upper surfaces of the connecting cylinder driving unit 200 and extends downward from the bottom surface of the connecting cylinder support frame 210 coupled to the main frame 100 as shown in FIG. formed in a cylindrical shape, and the inner housing 220 is rotatably disposed below the outer housing 230 .

The inner housing 220 is composed of a disc-shaped lower base 220b and a cylinder-shaped support part 220a extending upward at a predetermined interval from the center of the upper surface of the lower base 220b.

The rotor 240 composed of permanent magnets is disposed on the outer surface of the support part 220a, and the motor core 250 is disposed on the inner surface of the outer housing 230. Therefore, when power is applied to the stator coil 250, the inner housing 220 on which the rotor 240 is disposed rotates around the center of the lower base 220b.

Since the connecting cylinder driving unit 200 having this configuration is configured to directly rotate the connecting cylinder 280 without using a separate gear unlike a general driving unit, it is difficult to implement depending on the shape of the gear, such as the tooth shape and number of teeth of the gear. Precise rotation can be implemented through control of supplied power. Therefore, it is possible to provide a mounting machine that meets the needs of the recent industry where parts to be mounted become smaller.

In addition, as shown in FIG. 3, through-holes 212 penetrating vertically are formed in the connecting cylinder support frame 210 to correspond to the inner surface of the support part 220a, and the support part 220a is formed in the lower base 220b. A through hole is formed corresponding to the inner surface of the through hole 212, a pneumatic supply pipe for supplying air pressure is disposed.

As shown in FIG. 3, the connection cylinder 280 described above has an inner surface in communication with the through hole 212, and a pneumatic supply pipe is extended from the inner side to the lower side to supply air pressure to the spindle disposed below the connection cylinder 280 ( 610) is configured to be supplied. At this time, the pneumatic supply pipe may be a supply pipe made of various materials, but when the length of the connecting cylinder 280 is long as shown in FIG. 4, which is a cross-sectional view of the connecting cylinder connected to the connecting cylinder driving unit shown in FIG. In case of use, since processing may be difficult, it is preferable to use a flexible pneumatic supply hose 270 as in the present embodiment.

FIG. 4, which is a front view of the spindle shown in FIG. 1, and FIG. 5, which is a cross-sectional view of main parts in a state in which the spindle is coupled to the rotary head shown in FIG. 1, and FIG. Referring to, the support structure of the spindle 610 coupled to the rotor housing 620 of the rotary head 600 will be described below.

As shown in FIG. 5, the spindle 610 includes a cylindrical shaft 640, a shaft housing 642 through which the shaft 640 is disposed, and an upper portion of the shaft housing 642 through which the shaft 640 is disposed through. and an upper bush 644 and a lower bush 646 disposed at the lower portion.

The upper end of the shaft 640 is coupled with the pressure knob 641 pressurized by the previously described spindle elevation unit 300, and the lower portion of the pressure knob 641 and the upper outer surface of the shaft 640 are coupled with the spindle drive gear 410. A shaft rotation gear 640a to be engaged is disposed.

Between the shaft rotating gear 640a and the upper bush 644, a coil spring 640b generating a restoring force when the spindle elevating unit 300 presses the pressure knob 641 to move the spindle 610 downward is provided. are placed

At this time, the upper bush 644, the shaft housing 642, and the lower bush 646 are disposed in the rotor housing 620 as shown in FIG. It is configured to be able to rotate and move up and down with a rotation axis.

The upper bush 644 , the shaft housing 642 , and the lower bush 646 are inserted into the plurality of spindle insertion holes 622 formed in the rotor housing 620 . At this time, the upper bush 644 and the lower bush 646 are in close contact with the inner surface of the spindle insertion hole 622, as shown in FIG. 7, and the shaft housing 642 is spaced apart from the inner surface of the spindle insertion hole 622. are placed

As shown in FIG. 6, the shaft housing 642 communicates with the pneumatic connection hole 282 formed in the connecting cylinder 280 so as to receive air pressure through the connecting cylinder 280, and transmits it to the inside of the shaft 640. A pneumatic outlet hole 642a is formed, and the pneumatic pressure is transmitted to the adsorption nozzle 630 through the opening and closing of the pneumatic outlet hole 642a, so as shown in FIG. 7, the outer surface of the shaft housing 642 and the spindle are inserted. The inner surface of the ball 622 is preferably spaced apart at regular intervals, and the upper and lower bushes 644 and 646 of the upper and lower parts of the shaft housing 642 are preferably in close contact with the inner surface of the spindle insertion hole 622. .

Accordingly, the spindle 610 moving up and down is firmly supported within the rotor housing 620 through the upper bush 644 and the lower bush 646 .

At this time, sealing seating grooves 642b are formed on the upper and lower outer surfaces of the shaft housing 642, and between the shaft housing 642 and the upper bush 644 and between the shaft housing 642 and the lower bush 646. A first seal 651 and a second seal 653 are placed in close contact with the inner surface of the spindle insertion hole 622, and a third seal (651) adheres to the inner surface of the spindle insertion hole 622 ( 655) is placed.

The first seal 651 and the second seal 653 are located on the spindle insertion hole 622 of the rotor housing 620 when the spindle 610 moves up and down. Do not push up and down, and do not leak the delivered air pressure. In addition, the third seal 655 seated in the seal seating groove 642b prevents leakage of air pressure and at the same time allows the shaft housing 642 to be firmly supported on the spindle insertion hole 622 .

Since each of the bushes 644 and 646 and the shaft housing 642 supported by the respective seals 651, 653 and 655 are more firmly supported on the spindle insertion hole 622, each of the bushes 644 and 646 , The shaft 640 inserted into the center of the shaft housing 642 can move up and down and rotate without shaking, and in particular, can move without interfering with separate parts during up and down movement.

Referring to FIG. 4, which is a cross-sectional view of the main part of the connecting cylinder connected to the connecting cylinder driver shown in FIG. 3, a structure in which pneumatic pressure is supplied to the suction nozzle 630 for sucking parts using pneumatic pressure at the lower end of the spindle 610 will be described. If you do it like below

As described above, the rotary head 600 rotates around the connecting cylinder 280, and the spindle 610 rotating and moving up and down on the rotor housing 620 of the rotary head 600 rotates the connecting cylinder 280. , The connecting cylinder driving unit 200, the spindle lifting unit 300, the spindle driving unit 400, and the valve driving unit 500 are connected to control the rotation and movement of the spindle 610 and the air pressure supplied to the spindle 610. Since it must be installed around the 280, the length of the connecting cylinder 280 becomes longer, and as the length of the connecting cylinder 280 increases, the structure for supplying air pressure also becomes longer.

Therefore, as shown in FIG. 4 , the present invention allows air pressure to be supplied to the spindle 610 through the inner surface of the connecting cylinder 280 .

This configuration minimizes the exposure of the pneumatic supply line to the outside and prevents the pneumatic supply line from contacting other components.

Pneumatic supply pipes made of various materials may be disposed on the inner surface of the connecting cylinder 280, but when the pneumatic supply pipe is made of a material that does not bend, such as metal, more precise processing is required to arrange it inside the connecting cylinder 280, which is elongated. this will be needed Therefore, it is preferable to use the pneumatic supply hose 270 as a pneumatic supply pipe as in this embodiment. At this time, it is preferable that a distribution socket 290 having a through hole formed in the direction of the inner surface of the connection cylinder 280 is coupled to the end of the pneumatic supply hose 270. It is preferable to form a pneumatic connection hole 282 communicating with the inner surface of the connecting cylinder 280 at a position corresponding to the distribution socket 290 on the lower outer surface of the connecting cylinder 280.

Therefore, when the connecting cylinder 280 is rotated by the connecting cylinder driver 200, the connecting cylinder 280 rotates around the distribution socket 290 so that the pneumatic supply hose 270 coupled to the distribution socket 290 is not twisted. It is preferable to rotate, and more preferably, a bearing 292 is installed between the outer surface of the distribution socket 290 and the inner surface of the connecting cylinder 280 so that the connecting cylinder 280 can rotate more effectively.

The pneumatic supply hose 270 disposed inside the connecting cylinder 280 may be formed of various materials, but is preferably formed of a flexible material so as to facilitate processing.

In the above, the present invention has been described in detail using preferred embodiments, but the scope of the present invention is not limited to specific embodiments, and should be interpreted according to the appended claims. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

100: mainframe
200: connecting cylinder driving unit 210: connecting cylinder support frame
212: through hole 220: inner housing
230: outer housing
240: rotor 250: motor core
260: stator coil 270: pneumatic supply hose
280: connecting cylinder 282: pneumatic connector
290: distribution socket 292: bearing
300: spindle elevating unit
400: spindle driving unit
500: valve driving unit 510: valve driving motor
600: rotary head 610: spindle
620: rotor housing 630: suction nozzle
640: shaft 640a: shaft rotation gear
641: pressure knob 642: shaft housing
642a: pneumatic inflow hole 644: upper bush
646: lower bush 651: first sealing
653: second ceiling 655: third ceiling

Claims (4)

Connecting cylinder driving unit disposed on the upper part of the main frame;
A connecting cylinder disposed under the connecting cylinder driving unit and rotating when the connecting cylinder driving unit is driven:
a rotor housing disposed under the connecting cylinder;
a spindle rotatably disposed through the rotor housing and having a suction nozzle disposed at a lower portion of the rotor housing;
a spindle driver disposed on a side surface of the main frame to rotate the spindle;
A spindle elevating unit disposed on one side of an upper portion of the main frame to move the spindle in an up and down direction;
A spindle driving gear that rotates around the connecting cylinder when the spindle driving unit is driven is disposed on the connecting cylinder,
A shaft rotation gear meshing with the spindle drive gear is disposed on the spindle,
The connecting cylinder driving unit is composed of an outer housing coupled to the main frame and an inner housing rotatably disposed below the outer housing,
A spindle support structure capable of being driven in multiple directions, characterized in that a rotor, a motor core, and a stator coil wound around the motor core are disposed between the outer housing and the inner housing, and the connecting cylinder is coupled to the lower portion of the inner housing. Rotary head for component mounting machine with
According to claim 1,
The spindle
A cylindrical shaft;
a shaft housing through which the shaft is disposed; and
The shaft is disposed through and includes an upper bush disposed above the shaft housing and a lower bush disposed below the shaft housing,
The shaft rotation gear is disposed above the shaft,
A coil spring is disposed between the shaft rotation gear and the upper bush to generate a restoring force when the spindle elevating unit moves the spindle downward,
The rotary head for a component mounting machine having a multi-direction drivable spindle support structure, characterized in that the upper bush, the shaft housing and the lower bush are disposed within the rotor housing.
According to claim 2,
A plurality of spindle insertion holes into which the spindles are inserted are formed in the rotor housing,
The upper bush and the lower bush are in close contact with the inner surface of the spindle insertion hole,
The rotary head for a component mounting machine having a spindle support structure capable of being driven in multiple directions, characterized in that the shaft housing is disposed spaced apart from the inner surface of the spindle insertion hole.
According to claim 3,
Sealing seating grooves are formed on the upper and lower outer surfaces of the shaft housing,
A first seal and a second seal are disposed between the shaft housing and the upper bush, and between the shaft housing and the lower bush, in close contact with the inner surface of the spindle insertion hole,
The rotary head for a component mounting machine having a spindle support structure capable of being driven in multiple directions, characterized in that a third seal ring in close contact with the inner surface of the spindle insertion hole is disposed in the sealing seating groove.

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