JPH06283899A - Tool exchange device in mounting device - Google Patents

Abstract

PURPOSE:To make possible automatic exchange of an arm member by fitting a pin member to a guidance groove by interposing a pin member provided to an arm member inner peripheral surface in the guidance groove formed in a nozzle member outer peripheral surface and by mounting the arm member on the nozzle member removably. CONSTITUTION:While a pair of attaching/removing boring parts 41 are shaped in an outer peripheral surface of an arm supporting block 34 of an arm member 21, a fixing pin 38 is projected from an inner peripheral surface thereof. A guide groove 31 of a longitudinal groove 31a and a transverse groove 31b is made in a position corresponding to that of the fixing pin 38 on an outer peripheral surface of an outer shaft 24 of a nozzle member 20. The arm member 21 is fitted and mounted on the nozzle member 20 by interposing the fixing pin 38 from the longitudinal groove 31a to the transverse groove 31b of the guide groove 31. A pair of base blocks 56 which can be made close and apart are provided on a base, a first chuck block 67 is sealed to a top part and a fixing pin 57 which can be inserted through the attaching/removing boring part 41 is shaped to project in an opposite surface of the first chuck block 67.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mounts a chip component such as an IC on a printed circuit board by a head unit having a nozzle for sucking a chip component and an arm member for positioning an electronic component sucked by the nozzle. The present invention relates to a tool changing device for a mounting machine that automatically replaces a nozzle or an arm member in the mounting machine.

[0002]

2. Description of the Related Art Conventionally, a head unit movably mounted above a base is provided with a nozzle for adsorbing chip components so that the nozzle can be moved up and down, and after the nozzle adsorbs a chip component from a component supply unit, the head unit A mounting machine is generally known in which a chip component is moved onto a printed board to mount a chip component on the board. In such a mounting machine, the nozzle is mounted at the tip of a hollow nozzle shaft of a nozzle member, and a negative pressure from a negative pressure supply source is introduced into the nozzle shaft through a valve or the like. It is burnt and acts on the nozzle so that the chip component can be sucked.

Further, in the mounting machine as described above, recently, in order to mount the chip component at a predetermined position on the substrate more accurately, the suction position of the chip component with respect to the nozzle is deviated in the state where the chip component is sucked by the nozzle. A device for making a correction has also been proposed. As such a device, for example, there is a device in which an arm member in which four arms are arranged in a cylindrical arm support block at equal intervals in the circumferential direction is attached to the nozzle member. In this device, the upper end of each arm is pivotally supported by the arm support block, whereby each arm can be opened / closed and oscillated radially around the nozzle. When picking up the chip components to be supplied, each arm is kept open. When the tip parts are picked up at the nozzle tip, each arm swings in the closing direction (toward the nozzle). By contacting the side surfaces of the chip component with the respective arms, the suction position shift of the chip component with respect to the nozzle is corrected.

By the way, the nozzle and the arm member are
It is detachably attached to the nozzle member so that the size and shape can be changed according to the type of tip member, etc.In particular, when replacing the nozzle, nozzles of multiple sizes and shapes are placed in appropriate places on the base. There is also proposed a mounting machine in which a nozzle exchange station for mounting and holding is installed, and a head unit is moved onto the nozzle exchange station to automatically exchange nozzles.

[0005]

However, although there has been proposed a device which can be automatically replaced as described above for nozzle replacement, an operator detaches and replaces the arm member from the nozzle shaft. It is desirable from the standpoint of work efficiency, production efficiency and unmanned work if it can be automated.

Further, depending on the type of chip parts and the like, it may be necessary to replace the nozzle and the arm member at the same time, so it is more convenient if the nozzle can also be replaced when the arm member is replaced.

The present invention has been made in order to solve the above problems, and provides a tool exchanging device in a mounting machine which can automatically exchang an arm member and also exchang a nozzle. It is an object.

[0008]

The invention according to claim 1 is
A head unit movably installed above the base,
A nozzle member that is provided on the head unit so as to be able to move up and down, a nozzle for adsorbing electronic components that is detachably attached to the lower end of the nozzle member, and a nozzle that is detachably attached to the nozzle member and is adsorbed by the nozzle. In a mounting machine including an arm member having a plurality of arms for positioning an electronic component, one or a plurality of pin members are projectingly provided on the inner peripheral surface of the mounting member, and the outer peripheral surface of the nozzle member is provided. , One or a plurality of substantially inverted L-shaped guide grooves each having a vertical groove and a horizontal groove corresponding to the protruding position of the pin member, and the pin member of the arm member is guided to the nozzle member of the nozzle member. At least a pair of arm portions which can be brought into contact with and separated from each other on the base while the arm member is engaged with the nozzle member by interposing from the vertical groove to the horizontal groove. A tool exchanging station equipped with an exchanging chuck member is provided, the nozzle member and the chuck member are made rotatable relative to each other, and an engaging portion corresponding to the arm member exchanging chuck member and the outer peripheral surface of the arm member. Is provided.

According to a second aspect of the present invention, the nozzle is mounted on the nozzle member so that it can be detached in response to an external force, and a rib portion is provided on the outer peripheral surface near the tip of the nozzle, while the tool exchanging station is provided. Is provided with a pair of chuck members for exchanging nozzles capable of holding and separating the nozzles in a state in which they are close to each other and in a state in which they are close to each other. In addition, a support member for supporting the nozzle tip portion is provided.

[0010]

According to the invention described in claim 1, the pin member provided on the inner peripheral surface of the arm member is provided along the horizontal groove from the vertical groove of the guide groove formed on the outer peripheral surface of the nozzle member. The pin member and the guide groove are engaged with each other, whereby the arm member is detachably attached to the nozzle member.

When the arm member is removed from the nozzle member to which the arm member is attached as described above, the nozzle member attached to the arm member is inserted between the arm member exchange chuck members of the tool exchange station. Moved,
After that, the chuck members for exchanging the arm members are brought close to each other. As a result, the chuck members for exchanging the arm members and the arm members are engaged with each other, and the arm members are held non-rotatably. Then, in this state, the pin member of the arm member is moved from the end of the lateral groove of the guide groove of the nozzle member to the upper end of the vertical groove by rotating the nozzle member and the chuck member for exchanging the arm member relatively. The engagement between the member and the guide groove is released, and the nozzle member is further raised, whereby the arm member is removed from the nozzle member while being held by the arm member replacement chuck member. On the other hand, when the arm member held by the arm member exchanging chuck member is mounted on the nozzle member, the arm member is mounted on the nozzle member by performing the operation reverse to the above.

According to the second aspect of the invention, when the nozzle member is moved between the arm member exchanging chuck members as described above, the tip end portion of the nozzle mounted on the tip end portion of the nozzle member is supported by the support member. Supported. When the arm member exchanging chucks approach each other, simultaneously or in synchronization with each other, the nozzle exchanging chuck members approach each other, and the nozzle is positioned above the rib portion provided on the outer peripheral surface of the nozzle. It is held by a replacement chuck member. When the nozzle member is lifted to remove the arm member, the rib portion of the nozzle member engages with the nozzle replacement chuck member, and the nozzle is removed from the nozzle member tip portion.

[0013]

Embodiments of the present invention will be described with reference to the drawings.

1 and 2 show the structure of the entire mounter according to an embodiment of the present invention. As shown in the figure, a conveyor 2 for conveying a printed circuit board is arranged on a base 1 of an electronic component mounting machine (hereinafter, abbreviated as a mounting machine), and a printed circuit board 3 is conveyed on the conveyor 2. And is stopped at a predetermined mounting work position.

On the side of the conveyor 2, a parts supply section 4 is provided.
Is arranged, and a tool exchange station 10 described later in detail is arranged.

The component supply unit 4 is equipped with a plurality of rows of tape feeders 4a, and each tape feeder 4a has its own structure.
Small pieces of electronic components such as ICs, transistors, and capacitors are stored at predetermined intervals so that the held tape can be pulled out from the reel, and the tape feeding end is equipped with a ratchet-type feeding mechanism, which will be described later. The tape is intermittently delivered as the chip components are picked up by the head unit 5.

A head unit 5 for mounting components is installed above the base 1. The head unit 5 is movable in the X-axis direction (direction of the conveyor 2) and Y-axis direction (direction on the horizontal plane orthogonal to the X-axis).

That is, a pair of fixed rails 7 extending in the Y-axis direction and a ball screw shaft 8 rotatably driven by a Y-axis servomotor 9 are arranged on the base 1, and the fixed rails 7 are mounted on the fixed rail 7. A head unit support member 11 is arranged in the head unit, and a nut portion 12 provided on the support member 11 is screwed onto the ball screw shaft 8. A guide member 13 extending in the X-axis direction and a ball screw shaft 14 driven by an X-axis servomotor 15 are arranged on the support member 11, and the head unit 5 can be moved on the guide member 13. A nut portion (not shown) that is held and provided on the head unit 5 is screwed onto the ball screw shaft 14. Then, the ball screw shaft 8 is rotated by the operation of the Y-axis servomotor 9 to move the support member 11 in the Y-axis direction, and the ball screw shaft 14 is rotated by the operation of the X-axis servomotor 15, so that the head unit is rotated. 5 moves in the X-axis direction with respect to the support member 11.

The head unit 5 is provided with a nozzle member 20 for sucking an electronic component, and an arm member 21 for correcting the suction deviation of the sucked electronic component is mounted on the nozzle member 20. ing. The nozzle member 20 includes an air cylinder 17 for raising and lowering the nozzle member attached to the head unit 5 and an R for rotating the nozzle member.
The axis servo motor 18 allows the head unit 5 to be raised and lowered and rotated.

Here, the nozzle member 20 and the arm member 21 will be described in detail with reference to FIG. In the figure,
The nozzle member 20 includes a negative pressure supply pipe 25 in which a negative pressure supply passage 26 is formed, a nozzle shaft 22 into which the negative pressure supply pipe 25 is press-fit, and an inner shaft 23 integrally fitted to the nozzle shaft 22. And the inner shaft 23
The outer shaft 24 is externally fitted to the nozzle shaft 22, and the nozzle 27 is attached to the lower end portion (tip portion) of the nozzle shaft 22.

The nozzle shaft 22 is a tubular member, the upper end side of which is connected to the air cylinder 17 and the R-axis servomotor 18 via a housing and a transmission means (not shown). The supply pipe 25 is press-fitted. The negative pressure supply pipe 25 is connected to a negative pressure supply source (not shown) via a valve or the like, and the negative pressure generated in the negative pressure supply source is supplied to the nozzle shaft 22 via the negative pressure supply passage 26.
It is designed to lead to the tip side of. On the other hand, a ball 29 is provided on the tip side of the nozzle shaft 22. The ball 29 has a part of the outer peripheral surface of the ball 29, which is formed smaller than its diameter, on the inner peripheral side of the nozzle shaft 22, and by a biasing spring (not shown),
The nozzle shaft 22 is biased in the axial direction (rightward in FIG. 3).

A nozzle 27 for mounting electronic parts is fitted into the tip of the nozzle shaft 22. The nozzle 27 is a tapered tubular member in which a detachable rib portion 28 is formed on the outer peripheral surface of the tip end portion thereof, and a stopper groove 30 of a predetermined dimension is axially formed from the lower end side thereof. The nozzle 2 is inserted into the nozzle 22.
The outer peripheral surface of the ball 29 of the nozzle shaft 22 is interveningly engaged with the stopper groove 30 of No. 7 and is biased in the axial direction. That is, this allows the nozzle 27 to be attached to and detached from the nozzle shaft 22, and after being attached to the nozzle shaft 22, it will not be easily detached due to its own weight or the like.

On the other hand, the inner shaft 23 is integrally fitted on the outer peripheral surface of the nozzle shaft 22,
Further, an outer shaft 24 is fitted on the outer peripheral surface of the inner shaft 23. Although not shown, a projection having a dimension in the axial direction (vertical direction in FIG. 5) is formed on the outer peripheral surface of the inner shaft 23, and the inner peripheral surface of the outer shaft 24 has a dimension in the axial direction. The keyway it has is engraved. That is, the outer shaft 24 is externally fitted to the inner shaft 23 in a state in which the protrusion of the inner shaft 23 is engaged with the key groove of the outer shaft 24, which allows the inner shaft 23 and the outer shaft 24 to move relative to each other. Only vertical movement is allowed. Further, on the outer peripheral surface of the outer shaft 24, a pair of guide grooves 31 for mounting an arm member 21, which will be described later, and a pair of spherical concave portions 32 are engraved at positions symmetrical to each other in the circumferential direction. Has been done. The guide groove 31 is composed of a vertical groove 31a of a predetermined size that extends in the axial direction from the lower end of the outer shaft 24, and a horizontal groove 31b of a predetermined size that extends in the circumferential direction (clockwise in a top view) from the upper end of the vertical groove 31a. It is formed in an inverted L shape. On the other hand, the recess 32 is formed at a position above the end of the lateral groove 31b of the guide groove 31.

When the air cylinder 17 of the nozzle member 20 is driven, the nozzle shaft 22 and the inner shaft 23 are integrally moved up and down with respect to the outer shaft 24, while the R-axis servomotor 18 is driven. Then, the key groove of the outer shaft 24 and the protrusion of the inner shaft 23 are engaged, and the nozzle shaft 22,
The inner shaft 23 and the outer shaft 24 are designed to rotate integrally.

The arm member 21 is detachably attached to the outer peripheral side of the nozzle member 20 constructed as described above. The arm member 21 includes four arms 33 for correcting the suction displacement of the electronic components sucked by the nozzles 27 of the nozzle member 20, and an arm support block 34 on which the arms 33 are swingably mounted. , Each arm 3 above
Urging block 35 for urging No. 3 and this urging block 3
And a biasing spring 36 that biases 5 downward. For the sake of convenience, only two arms 33 are shown in the drawing.

The arms 33 are arranged on the lower end side of the arm support block 34 formed in a cylindrical shape so as to be equidistant in the circumferential direction, that is, the arms 33 have an angle of 90 ° in the circumferential direction. It is set up. The upper end of the arm 33 is pivotally supported by a shaft 37, which allows the arms 33 to swing with respect to the arm support block 34 in a radially open state and a closed state. ing. In addition, the tip portion (lower end portion) of each arm 33
Although not shown in detail, a chuck member corresponding to the shape of the electronic component is attached to the side surface of the electronic component when each arm 33 is closed. The suction displacement of the electronic component with respect to the nozzle 27 is corrected.

On the inner peripheral surface of the arm supporting block 34, a pair of fixing pins 38 (pin members) for mounting the arm supporting block 34 on the nozzle member 20 are provided at positions symmetrical with respect to the circumferential direction. ) Is projected by means of, for example, press fitting or screwing, and a pair of balls 39 are provided above these fixing pins 38. The ball 39 has a part of the outer peripheral surface of the ball 39, which is formed smaller than its diameter, on the inner peripheral side of the arm support block 34. It is designed to be biased in the axial direction.

On the other hand, on the outer peripheral surface of the arm support block 34, a pair of attachment / detachment perforation portions 41 are provided in the vicinity of the lower end portion at symmetrical positions in the circumferential direction. These attachment / detachment perforation portions 41 are provided in the circumferential direction of the arm support block 34.
It is provided between the arms 33, that is, at a position shifted by 45 ° with respect to the arms 33 in the circumferential direction.

Further, on the outer peripheral surface of the arm support block 34, above the respective arms 33, the inner block 35 is provided.
A cylindrical urging block 35 including a and an outer block 35b is externally fitted, and the urging block 35 can be moved up and down relatively to the arm support block 34. A flange portion 40 is formed on the upper end of the arm support block 34 on the outer peripheral side. A biasing spring 36 is interposed between the flange portion 40 and the upper end portion of the biasing block 35, whereby the biasing block 3 is provided.
5 is urged downward, and its lower end presses the upper end of each arm 33. That is,
The lower end of the urging block 35 presses the arms 33 from above, so that the arms 33 are held in a closed state.

The arm member 21 constructed as described above is attached to the nozzle member 20 by inserting the nozzle member 20 into the arm support block 34. More specifically, the fixing pins 38 projecting from the inner peripheral surface of the arm support block 34 are inserted along the vertical grooves 31a of the guide grooves 31 formed in the outer shaft 24 to fix the fixing pins 38. When the upper end of the vertical groove 31a abuts, the arm member 21 and the nozzle member 20 are relatively rotated in the circumferential direction, whereby the fixing pin 38 is moved to the horizontal groove 31b, and the fixing pin 38 and the guide groove are guided. 31 is engaged with the arm member 21 so that the arm member 21 does not separate from the nozzle member 20 by its own weight.
Further, in the state where the fixing pin 38 and the guide groove 31 are engaged with each other as described above, the ball 39 provided on the arm support block 34 and the recess 32 formed on the outer peripheral surface of the outer shaft 24 are engaged with each other so that the outer shaft is engaged. 24 is urged to the axial center side thereof, whereby the arm member 21
The circumferential movement of the nozzle member 20 is restrained.

In the nozzle member 20 to which the arm member 21 is attached as described above, the nozzle member 20 and the arm member 21 are rotated integrally while the R-axis servomotor 18 is driven. As described above, the nozzle shaft 22 and the inner shaft 23 of the nozzle member 20 are driven by driving the air cylinder 17.
Are raised and lowered together. At this time, when the nozzle shaft 22 and the inner shaft 23 are lowered, the tip portion (lower end portion) 43 of the inner shaft 23 comes into contact with the cam 42 provided on each arm member 33 according to the lowering, so that each arm member Three
3 is swung in the outer peripheral direction, whereby each arm 33
Is swung from the closed position shown by the one-dot chain line in FIG. 5 to the open position shown by the two-dot chain line, while the nozzle shaft 22 and the inner shaft 23 are raised, each arm member 33 is moved.
Is urged from above by the urging block 35 to be in a closed state.

Next, the tool exchange station will be described with reference to FIGS. 3 and 4.

As described above, the tool exchanging station 10 is disposed on the side of the conveyor 2 on the base 1, and in the present embodiment, the three bases having the same basic structure are provided. Equipped with a tool change station 10. As shown in FIGS. 2 and 3, each tool exchange station 10 includes a fixed base 50 fixed on the base 1 and a tool exchange mechanism unit 51 supported to be movable up and down with respect to the fixed base 50. It has the basic structure.

A vertical wall surface 66 facing the head unit 5 is formed on the fixed base 50, and a rail 52 extending in the vertical direction is fixed to the vertical wall surface 66. Further, a slider is attached to the rail 52. 53 is mounted so that it can be raised and lowered. A base 54 is fixedly attached to the slider 53 as a support base for the tool changing mechanism 51. A cylinder 63 for raising and lowering the tool changing mechanism is disposed on the base 54, and a tip end of a cylinder rod 64 of the cylinder 63 is fixed to a support plate 65 fixed to the fixing table 50. That is, when the cylinder 63 is driven, the base 54 is moved to the fixed base 5.
It is designed to be moved up and down along a rail 52 of 0.

A base 55 is fixedly attached to the side of the cylinder 63 on the base 54. This base 5
5, a pair of base blocks 56 are arranged in the Y-axis direction, and these blocks 56 are movable on a rail member (not shown) extending in the Y-axis direction, which is arranged on the base 55. Is attached to. No. 1 on top of each block 56
Chuck blocks 67 (arm member replacement chuck members) are fixed, and fixing pins 57 are projected from the surfaces of the first chuck blocks 67 facing each other by means such as press fitting or screwing. It is provided. The fixing pin 57 and the arm support block 3
Corresponding engaging portions are configured with the removable perforation portions 41. Second chuck blocks 58 (nozzle replacement chuck members) are fixed to the facing surfaces of the lower ends of the blocks 56, and the facing surfaces of the second chuck blocks 58 are As shown in FIG. 4, an arcuate notch 59 is formed.

At the lower end of each block 56, a pair of cylinder rods 6 are provided between the blocks 56 in opposite directions.
A cylinder 62 having 8 is arranged in a groove (not shown) formed in the base 55. The cylinder rods 68 of the cylinder 62 are connected to the opposing surfaces of the base blocks 56 via connecting members (not shown), and the cylinders 62 are driven to drive the base blocks 56 to the base. Along the rails on the platform 67, they are displaced in the Y-axis direction so as to be close to each other and apart from each other.

A bridging member 69 fixed to the base 54 is interposed immediately above the cylinder 62 at an intermediate position of the base block 56. A disk-shaped nozzle support block 60 is fixed to the upper surface of the bridging member 69, and a support hole 61 extending in the vertical direction is formed at the center of the nozzle support block 60.

Next, the replacement of the arm member and the nozzle in the mounting machine having the above construction will be described with reference to FIGS. 6 to 8 according to the flowchart of FIG.

When the tool exchanging operation, that is, the removing operation of the nozzle 27 of the nozzle member 20 and the arm member 21 is started in the mounting machine having the above-described structure, first, step S1 is performed.
Then, the tool change station 10 is selected. That is, in the three tool change stations 10,
The tool exchange station 10 in which unused tools are not mounted and held is selected.

When the tool exchange station 10 is selected in step S1, it is determined whether or not the tool exchange station 10 is in the initial state. That is, in the tool exchanging station 10, it is judged whether or not the tool exchanging mechanism section 51 is lowered as shown in FIG. 3 and the base blocks 56 are apart from each other (step S2). . At this time, the tool exchange station 10 is not in the initial state (step S
In the case of 2), the tool exchanging mechanism 51 is lowered, each base block 56 is moved, and the tool exchanging station 10 is reset to the initial state (step S3).

When the tool exchange station 10 is initialized (YES in step S2), it is then determined whether the head unit 5 is at the reference position. That is, the head unit 5 is at the preset reference position, and the nozzle member 20 of the head unit 5 is
It is determined whether or not is increased (step S4). At this time, if the head unit 5 is not at the reference position (NO in step S4), the head unit 5 is moved and the nozzle member 20 is raised to reset the head unit 5 to the reference position (step). S5).

As described above, the tool change station 10
Is set to the initial state and the head unit 5 is set to the reference position (YES in step S4), the head unit 5 is then moved and placed on the tool exchange station 10, and the tool exchange station 10 The cylinder 63 of the tool is driven, and the tool changing mechanism section 5
1 is increased by a predetermined amount (step S6). On this occasion,
As shown in FIG. 5, the axial center of the nozzle 27 is the support hole 6 of the nozzle support block 60 disposed in the tool exchange mechanism section 51.
The head unit 5 is moved so as to be arranged above the center of the nozzle member 1, and the nozzle member 20 and the nozzle member 20 are arranged so that the attachment / detachment perforation portion 41 provided in the arm support block 34 of the arm member 21 is arranged in the Y-axis direction. The arm member 21 is rotated integrally. On the other hand, in the tool exchanging station 10, the tool exchanging is performed so that the axis of the fixing pin 57 projecting from each of the first chuck blocks 67 and the axis of the attaching / detaching hole 41 of the arm support block 34 coincide with each other. The mechanical unit 51 is raised.

When the head unit 5 is moved as described above, the nozzle member 20 is then lowered by a predetermined amount. That is, as shown in FIG. 6, the tip end portion of the nozzle 27 is inserted into the support hole 61 of the nozzle support block 60, and the lower surface of the attaching / detaching rib portion 28 formed on the outer periphery of the tip end portion of the nozzle 27 is the nozzle support block. 60 is brought into contact with the upper surface portion.

When the nozzle member 20 is lowered as described above, then the cylinder 62 of the tool changing mechanism 51 is moved.
Are driven to move the base blocks 56 to positions close to each other. That is, as shown in FIG.
Each fixing pin 57 of the chuck block 57 is inserted into the attachment / detachment perforation portion 41 of the arm support block 34, and each second chuck block 58 holds the nozzle 27 above the attachment / detachment rib portion 28. It

Then, as described above, when the arm member 21 and the nozzle 27 are held by the tool exchanging mechanism 51, the nozzle member 20 is rotated by a predetermined amount (counterclockwise as viewed from above). ) Will be done. At this time, the arm member 21 is fixed to the fixing pin 5 of the first chuck block 67.
Since it is made non-rotatable by 7, the nozzle member 20
Only the arm member 21 will be rotated.
That is, as a result, the ball 38 and the nozzle member 20 provided on the arm support block 34 of the arm member 21 are provided.
Of the outer shaft 24 is disengaged from the recess 32 formed on the outer peripheral surface of the outer shaft 24, and the fixing pin 38 projecting from the inner peripheral surface of the arm support block 27 is attached to the outer shaft 2
4 from the end of the lateral groove 31b of the guide groove 31 to the vertical groove 3
1a is moved to the upper end, and the fixing pin 38 and the guide groove 31 are moved.
Is disengaged (shown in FIG. 7).

When the nozzle member 20 and the arm member 21 are disengaged from each other as described above, then the nozzle member 20 is integrally lifted as shown in FIG.
At this time, as the nozzle member 20 rises, the fixing pin 38 of the arm support block 34 is moved to the vertical groove 31a of the outer shaft.
The arm member 21 is detached from the nozzle member 20 by being moved along.

On the other hand, since the nozzle 27 is clamped by the second chuck block 58 above the attaching / detaching rib portion 28 as described above, the nozzle 27 is lifted to attach / detach the nozzle 27. Rib part 2
8 and the second chuck block 58 engage with each other, whereby the stopper groove 30 of the nozzle 27 and the nozzle shaft 22 are engaged.
The engagement state with the ball 29 is released, and the nozzle 27 is pulled out from the tip end portion of the nozzle shaft 22.

Then, the arm member 21 and the nozzle 27 removed from the nozzle member 20 as described above are held by the first chuck block 56 in the arm member 21 as shown in FIG. Will be held by the second chuck block 58 with its tip inserted into the nozzle support block 60 (steps S7 and S8).

Then, in step S9, the tool exchanging station 10 is reset to the initial state, and further in step S10, the head unit 5 is reset to the reference position, thereby ending this flowchart. However,
In step S9, when the tool exchange station 10 is reset to the initial state, the tool exchange mechanism unit 51
Only the descent of is done.

In the above embodiment, only the removal of the tool has been described, and the description of the tool mounting has been omitted, but it is of course possible to mount the tool in the apparatus of the above embodiment. The flowchart in this case is basically the same as the flowchart in FIG. 9, and the tool attachment operation is performed in step S7 of FIG. 9, and the tool attachment completion confirmation is performed in step S9. Further, the specific operations of the head unit 5 and the tool exchange station 10 are as follows.
Basically, the tool can be attached by performing the reverse operation to the case of removing the tool.

Further, in the tool exchanging station 10 of the above embodiment, the tool exchanging mechanism portion 51 is provided with a pair of base blocks 56, and the base block 56 has the first chuck block 67 for detaching the arm member 21 and the nozzle 27. A second chuck block 58 for detachment is provided, and the first and second chuck blocks 67, 58 are integrally operated by moving the base block 56. Is an embodiment of the present invention, for example, a first chuck block 67,
The second chuck block 58 is configured to be operated by a separate driving means, and the arm member 21 and the nozzle 27 are arranged.
May be selectively attached or detached, or a tool station provided with only the first chuck block 67 may be configured to be used together with a conventional nozzle replacement station.

[0052]

As described above, according to the present invention, the nozzle member is attached to the head unit, the nozzle is detachably attached to the lower end portion of the nozzle member, and the arm member is detachably attached to the nozzle member. In a mounting machine equipped with
A pin member is provided so as to project from the inner peripheral surface of the arm member, while a substantially inverted L-shaped guide groove is formed on the outer peripheral surface of the nozzle member so that the pin member extends from the vertical groove to the lateral groove of the guide groove. The arm member is engaged with the nozzle member by inserting the arm member member into the nozzle member, and a tool exchanging station equipped with at least a pair of arm member exchanging chuck members that can be contacted and separated is disposed on the base. The nozzle member and the chuck member for arm replacement are made rotatable relative to each other, and the engaging member corresponding to the chuck member for arm member replacement and the outer peripheral surface of the arm member are provided. Can be attached and removed as desired.

Further, the nozzle is mounted on the nozzle member so that it can be detached in response to an external force, and a rib portion is provided on the outer peripheral surface in the vicinity of the tip end portion of the nozzle, while a pair of nozzle replacement chucks that can be brought into and out of contact with each other. By providing a member and a supporting member that supports the nozzle tip portion below the approaching position of these nozzle exchanging chuck members, the nozzle can be attached and detached at the same time when the arm member is attached and detached. It will be possible.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a mounting machine equipped with a tool changing device according to an embodiment of the present invention.

FIG. 2 is a schematic front view of a mounting machine including a tool changing device according to an embodiment of the present invention.

FIG. 3 is a side view showing a tool change station.

FIG. 4 is a plan view showing a tool exchange station.

FIG. 5 is a nozzle member showing a state during a tool changing operation,
It is sectional drawing of an arm member and a tool exchange mechanism part.

FIG. 6 is a nozzle member showing a state during a tool changing operation,
It is sectional drawing of an arm member and a tool exchange mechanism part.

FIG. 7 is a nozzle member showing a state during a tool changing operation,
It is sectional drawing of an arm member and a tool exchange mechanism part.

FIG. 8 is a nozzle member showing a state during a tool changing operation,
It is sectional drawing of an arm member and a tool exchange mechanism part.

FIG. 9 is a flowchart showing a tool exchange operation of the mounting machine.

[Explanation of symbols]

 1 Base 5 Head Unit 10 Tool Exchange Station 20 Nozzle Member 21 Arm Member 22 Nozzle Shaft 23 Inner Shaft 24 Outer Shaft 27 Nozzle 31 Guide Groove 31a Vertical Groove 31b Horizontal Groove 33 Arm 34 Arm Support Block 38 Fixing Pin 41 Detachable Hole 56 Base block 57 Fixing pin 58 Second chuck block 67 First chuck block

Claims (2)

[Claims] 1. A head unit movably mounted above a base, a nozzle member provided on the head unit so as to be able to move up and down, and an electronic component suction member detachably mounted on a lower end portion of the nozzle member. A mounting machine equipped with a nozzle for use and an arm member detachably mounted on the nozzle member, the arm member having a plurality of arms for positioning the electronic component sucked by the nozzle, While a plurality of pin members are provided in a protruding manner, one or a plurality of substantially inverted L-shapes composed of vertical grooves and horizontal grooves are formed on the outer peripheral surface of the nozzle member so as to correspond to the protruding positions of the pin members. The guide member is engraved, and the arm member is engaged with the nozzle member by interposing the pin member of the arm member from the vertical groove in the guide groove of the nozzle member to the lateral groove, while on the base. Each other A tool exchanging station equipped with at least a pair of chuck members for exchanging arm members which can be brought into contact with and separated from each other is provided so that the nozzle member and the chuck member can be rotated relative to each other. A tool exchanging device for a mounting machine, wherein an engaging portion corresponding to the chuck member for use with the outer peripheral surface of the arm member is provided. 2. A state in which the nozzle is attached to the nozzle member so as to be detachable in response to an external force, and a rib portion is provided on an outer peripheral surface in the vicinity of the tip end portion of the nozzle, while being close to the tool exchange station. And a pair of nozzle replacement chuck members capable of gripping the nozzles in a state of being close to and apart from each other and being close to each other,
Below the approaching position of these nozzle replacement chuck members,
The tool exchanging device for a mounting machine according to claim 1, further comprising a support member that supports the tip portion of the nozzle.