JP2001168583A - Surface mounting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mount an electronic part while sucking it surely and to enhance mounting efficiency. SOLUTION: The head unit body 5a of a head unit 5 is provided with a frame 22 being driven to move up and down by a Z-axis servo motor 21 and a part suction head 20 being driven to move up and down by an air cylinder 25 is mounted on the frame 22. The head 20 is moved up and down between an elevated position and a lowered position for sucking a part through combination of the motor 21 and the air cylinder 25. When the head is elevated after sucking a part, it is elevated slowly at first by driving the motor 21 and then a main controller 45 controls the motor 21 and the air cylinder 25 to drive the head 20 at high speed through the air cylinder 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface mounter comprising a head unit movable between a component supply section and a component mounting section, and a component suction head provided to be movable up and down.
In particular, the present invention relates to a surface mounter in which two mechanisms using an air cylinder and a motor as driving sources are used together as a head lifting / lowering driving mechanism.

[0002]

2. Description of the Related Art Conventionally, a head for moving a component between a component supply section and a printed circuit board positioned at a predetermined working position is provided with a head for picking up and lowering the component and rotatable. 2. Description of the Related Art A surface mounter (hereinafter, referred to as a mounter) that picks up a component from a tape feeder that supplies the component as a carrier and mounts the component on a printed circuit board is generally known.

In this type of mounting machine, the head is configured to be driven up and down by using an air cylinder as a driving source, whereby the head can be moved up and down at a high speed, and the mounting speed can be increased. Has been achieved.

[0004]

However, the conventional mounting as described above has the following problems since the head is moved up and down at a high speed.

[0005] That is, depending on the type of component, the head may rise before the negative pressure sufficiently acts on the component when the component is sucked. In such a case, the tape is stuck in an unstable state. Since the components are taken out from the component storage portion formed in the head, even if the components slightly contact the side walls of the storage portion or burrs formed therein, for example, the components are dropped from the head, and poor suction of the components is likely to occur. Problem. This tendency becomes more conspicuous as the suction area of the component by the head becomes smaller and the speed at which the head moves up and down becomes faster.

For this reason, it has been considered that the head elevating speed can be switched, and the head elevating speed is switched according to, for example, the type of a component to be sucked, and the head is raised and lowered at a speed suitable for the component. However, in the above-described conventional device in which the head is moved up and down by using the air cylinder as a drive source, the speed of the entire up / down stroke of the head is uniformly increased,
Alternatively, since the components are slowed down, for example, when only components requiring low-speed elevation are mounted, there is a problem that mounting efficiency is significantly impaired.

In addition, the vertical speed of the head can be switched by appropriately switching the flow path of the air by interposing a throttle in the air supply / discharge system of the air cylinder. It is also considered to temporarily change the elevating speed to elevate the head at a speed suitable for the component, but in this case, the degree of freedom for the elevating speed is low because the elevating speed of the head is naturally determined by the diameter of the aperture. There is a disadvantage that.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and it is an object of the present invention to provide a surface mounter capable of more securely mounting electronic components by suction while improving mounting efficiency. It is an object.

[0009]

In order to solve the above-mentioned problems, the present invention relates to a surface mounter comprising a movable head unit having a component suction head and a lifting drive mechanism for lifting and lowering the head. The lifting drive mechanism has a first mechanism that raises and lowers the head by a fixed stroke using an air cylinder as a drive source, and a second mechanism that raises and lowers the head using a motor as a drive source. Control means for raising and lowering the head over a predetermined raising position and a lowering position for sucking and mounting components, and further controlling a raising and lowering driving mechanism to raise and lower the head by a second mechanism within a specific range from the lowering position. Is provided (claim 1).

According to this device, within a specific range from the lowered position, the second of the lifting drive mechanisms, which uses a motor as a drive source, is used.
Since the head is driven up and down by the mechanism, at the time of picking up the components, the suction speed of the components can be improved by arbitrarily setting the lifting speed of the head according to the type of the components. After the head is lifted by the second mechanism until the suction state of the component is stabilized, the head is quickly raised to the raised position by the first mechanism using the air cylinder as a driving source, so that the time loss during suction is reduced. Can be minimized.

In the above arrangement, the storage means for storing the specific range according to the type of the component is provided, and the head is stored in the specific range corresponding to the component stored in the storage means according to the mounted component. The control means is configured to drive the head up and down (claim 2), and a storage means is provided for storing the elevating speed of the head in the specific range according to the type of component, and is stored in the storage means according to the mounted component. It is preferable that the control means is configured to drive the head up and down at the moving speed of the component.

[0012] According to this configuration, since the head is moved up and down for each type of component, the component can be more reliably and quickly sucked and mounted.

In the case where components are sucked and mounted from a tape feeder that supplies components using the tape as a carrier, the specific range is set to the range of the head of the head that can take out components from a component storage portion formed on the tape. It is preferable to set the same as the rising amount (claim 4).

According to this configuration, when a component having poor suction stability is taken out from the tape, it is possible to effectively prevent the component from coming into contact with the side wall of the storage section or a burr formed thereon and falling off.

[0015]

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

FIG. 1 schematically shows an entire surface mounting machine (hereinafter abbreviated as mounting machine) according to an embodiment of the present invention. In this figure, a conveyor 2 constituting a transport line is arranged on a base 1, and a printed circuit board 3 is transported on the conveyor 2 and stopped at a predetermined mounting work position.

At the side of the conveyor 2, a component supply unit 4
Is arranged. The component supply unit 4 includes a plurality of rows of tape feeders 4a. Each of the tape feeders 4a stores and holds small chip-shaped chip components such as ICs, transistors, and capacitors at predetermined intervals. And is provided with a ratchet-type feed mechanism at the tape pay-out end,
The tape is intermittently fed out as components are picked up by a head unit 5 described later.

Above the base 1, a head unit 5 for mounting components is mounted.
Can move in the X-axis direction (the direction of the conveyor 2) and the Y-axis direction (the direction orthogonal to the X axis on a horizontal plane).

That is, a pair of fixed rails 7 extending in the Y-axis direction and a ball screw shaft 8 driven to rotate by a Y-axis servomotor 9 are disposed on the base 1. A head unit support member 11 is disposed on the support member 11, and a nut portion 12 provided on the support member 11 is screwed to the ball screw shaft 8. The support member 11 is provided with a guide member 13 extending in the X-axis direction and a ball screw shaft 14 (shown in FIG. 3) driven by an X-axis servomotor 15. The unit 5 is movably held, and a nut portion 16 (shown in FIG. 3) provided on the head unit 5 is screwed to the ball screw shaft 14. The ball screw shaft 8 is rotated by the operation of the Y-axis servo motor 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 servo motor 15, thereby causing the head unit to rotate. 5 moves in the X-axis direction with respect to the support member 11.

The Y-axis servomotor 9 and the X-axis servomotor 15 have position detecting means 9 comprising an encoder.
a and 15a are provided integrally. During the mounting operation, the position of the head unit 5 is detected based on the output signals from the position detecting means 9a and 15a.

FIGS. 2 to 4 show the structure of the head unit 5. In these figures, the head unit 5 is provided with a head 20 for adsorbing components, and in this embodiment, eight heads 20 are arranged side by side in the X-axis direction.

The head unit 5 is equipped with a lifting drive mechanism for raising and lowering each of the heads 20. The lifting drive mechanism includes one overall vertical movement servomotor 21 (hereinafter, referred to as a Z-axis servomotor 21) for simultaneously moving each head 20 up and down, and a predetermined number (8) for individually lifting and lowering each head 20 by a fixed stroke. ), And the servo motor 21 and the air cylinder 2
5, the head 20 is configured to be moved up and down over a predetermined ascending position and a descending position for component mounting. Specifically, it is configured as follows.

The head unit body 5 of the head unit 5
a, a frame 22 for holding the head 20 and the air cylinder 25 and the like is vertically movably mounted, and is provided with a vertical ball screw 23 which is driven to rotate by a Z-axis servo motor 21. A screw 23 is screwed into a nut portion (not shown) provided on the frame 22. When the ball screw 23 is driven to rotate forward and reverse by the operation of the Z-axis servo motor 21, the head 20 and the like are moved up and down integrally with the frame 22. That is, the frame 22, the ball screw 2
3 and Z-axis servo motor 21 according to the second embodiment of the present invention.
A mechanism is configured.

The Z-axis servo motor 21 is integrally provided with position detecting means 21a composed of an encoder. During mounting, the output signal from the Z-axis servo motor 21 and the state of the up / down switching valve 43 which will be described later. The height position of the head 20 is detected based on the above.

Each head 20 has a hollow shaft 20a and a nozzle holder 2 attached thereto, as shown in FIG.
0b and a nozzle 20c detachably attached to the lower end thereof
The head 20 is attached to the frame 22 via a head guide 26 so as to be vertically movable and rotatable. That is, the head guide 26 is rotatably mounted on the frame 22, and the shaft 20a is fitted and mounted on the head guide 26 so as to be vertically movable.

The nozzle holder 20b is connected to the shaft 20
It is possible to move a predetermined stroke in the axial direction with respect to a.
And it is attached in a state of being biased toward the lower end by the spring 27. Thereby, the nozzle holder 20b
Can be elastically displaced in the axial direction with respect to the shaft 20a, so that the impact due to the collision between the nozzle tip and the component at the time of mounting the component or the collision between the suction component at the time of mounting the component and the printed circuit board 3 can be reduced. It has become.

A bearing 28 is fixed to the shaft 20a at a substantially middle portion thereof. This bearing 2
8, the inner ring portion is fixed to the shaft 20a, and the outer ring portion is fixed to the lower end of the sleeve 33a of the piston 33 described later.
Is rotatably connected to the sleeve 33a.

Air cylinders 25 are provided above the positions of the heads on the front side of the frame 22. The upper ends of the shafts 20a of the heads 20 are inserted into the corresponding air cylinders 25, respectively. I have.

Each of the air cylinders 25 has a piston 33 inside thereof, and pressure chambers 34, 35 above and below the piston 33 (in FIG. 4, the pressure chamber 34 is almost extinguished because the piston 33 is at the rising end position). The pressure chambers 34 and 35 are connected to the passage of the air supply / discharge system via ports 36 and 37. When the air is discharged from the lower pressure chamber 35 while the air is supplied to the upper pressure chamber 34, the piston 33 descends, and conversely, the air is supplied to the lower pressure chamber 35 while the upper pressure chamber 34 is supplied.
When the air is exhausted from the piston 33, the piston 33 rises.

At the lower end of the piston 33, a cylindrical sleeve 33a longer than the vertical stroke of the piston 33 is provided.
The upper end of the shaft of the head 20 is rotatably inserted into the sleeve 33a. In this state, the shaft 20a of the head 20 and the sleeve 33a are rotatable via the bearing 28 as described above. Are linked. As a result, as described above, when the piston 33 descends, the shaft 20a and the head 20 descend integrally, and conversely, the shaft 20a and the head 20 where the piston 33 rises rise integrally. That is, the air cylinder 25, the head guide 26, and the like of the lifting drive mechanism of the head 20 serve as the first mechanism according to the present invention.
A mechanism is configured.

Although an air supply / discharge system is not shown in detail, an upper chamber passage 38 leading to the upper pressure chamber 34 is provided.
And a lower chamber passage 39 communicating with the lower pressure chamber 35 are provided in each air cylinder 25, and the passages 38, 39 of each air cylinder 25 are respectively provided with a lift switching valve 43 (shown in FIG. 5) composed of an electromagnetic valve or the like. And each of the up / down switching valves 43 is connected to an air supply source and a chamber (not shown). The air supply / discharge system is configured so that the supply / discharge of air to / from each air cylinder 25 is switched in accordance with the switching of each lifting / lowering switching valve 43.

The head unit 5 is further provided with a rotation drive mechanism for rotating each head 20. Although not shown, the rotation drive mechanism has one rotation servomotor, and a rotation transmission belt is wound around the servomotor and each head 20 so that each head 20 is rotated. Are individually rotated.

The head unit 5 is provided with a vacuum generator 40 for supplying a negative pressure to each of the heads 20.
It is arranged above. And the air cylinder 2
5 is connected to the vacuum generator 40 through a flexible pipe and a valve (not shown) so that the head is connected to the head through the piston 33 of the air cylinder 25. 20 is supplied with a negative pressure.

The reference numeral 18 in FIG.
Is a camera for recognizing the fiducial mark provided on the head unit 5a, and is attached to the side of the head unit body 5a.

FIG. 5 shows a mounting machine constructed as described above.
A control system as shown in FIG. The control system includes a well-known CPU that executes logical operations, a ROM that stores various programs for controlling the CPU in advance, and a RAM that temporarily stores various data during operation of the apparatus. Means 45, the servomotors 9, 15,
21 and the respective drive control means 46 to 4 of the lift switching valve 43
9, an external storage means 52 (simply referred to as storage means 52) for storing data relating to components such as the size and shape of the mounted components, and various data input means 5 such as a keyboard.
0 and display means 51 comprising a CRT display.

The drive control means 46 to 49 of the servomotors 9, 15, 21 and the like and the position detection means 9a, 15
The main control unit 45 a and 21a are connected to the main control unit 45 so that the main control unit 45 controls the driving of each servo motor and the like according to a program stored in advance during mounting. .

In particular, regarding the elevating operation of each head 20 at the time of picking up components, the size of the mounted component is compared with a predetermined value stored in the main control means 45, and based on the comparison result, the elevating and lowering of the head 20 is performed. Among the driving mechanisms, a mechanism using the air cylinder 25 as a driving source (first mechanism) and a mechanism using the Z-axis servomotor 21 as a driving source (second mechanism) are selectively used as described below, so that mounting components can be used. The head 20 is configured to perform a suitable lifting operation every time.

Hereinafter, the mounting operation control by the main control means 45 will be described with reference to the flowchart of FIG.

When the mounting operation is started, first, the head unit 5 is arranged above the component supply unit 4, and then the size of the mounted component (the component to be sucked up) is determined by the main control unit 45.
Is compared with a predetermined size (predetermined value) stored in the storage device to determine whether the size is equal to or smaller than the predetermined size (steps S1 and S1).
2). Here, the predetermined value is set to such a value that if the size of the component is smaller than the size, the suction state immediately after the suction of the component may become unstable due to the relationship with the nozzle 20c. It is obtained experimentally in advance by examining the dropping frequency of the component with the head being raised every time.

In step S2, if it is determined that the size of the mounted component is smaller than the predetermined size, the process proceeds to step S3, and the head 2 is picked up when picking up the component as follows.
0 is controlled to rise and fall.

First, the frame 22 is lowered by the driving of the Z-axis servo motor 21, whereby the heads 20 are arranged integrally at a height position (referred to as an intermediate standby position) lowered by a predetermined amount from the raised position (step S3). ). further,
The up / down switching valve 43 corresponding to the head 20 to be continuously sucked components is switched to a down drive state (that is, a state in which air is supplied to the upper pressure chamber 34 and air is discharged from the lower pressure chamber 35), Thus, the head 20 is lowered by driving the air cylinder 25 from the intermediate standby position to a descent position at which components can be sucked, and a negative pressure is supplied into the head 20 at a predetermined timing while the head 20 is lowered. The components are sucked by the head 20 (steps S4 and S5).

Subsequently, the head 20 is raised by inverting the Z-axis servo motor 21 (step S).
6). Further, the lifting / lowering switching valve 43 corresponding to the head 20 that has continuously sucked the components is switched to a rising drive state (that is, a state in which air is supplied to the lower pressure chamber 35 and air is discharged from the upper pressure chamber 34), As a result, the head 20 that has picked up the component is moved up by the predetermined amount above the intermediate standby position by driving the air cylinder 25 (step S7).

Here, in step S6, the head 20
Is set to be slightly higher than the height required to take out the components from the tape feeder 4a, that is, the height dimension (depth) of the component storage portion formed on the tape. Also, in step S6, the head 2
0, that is, the speed at which the component is taken out of the tape is sufficiently lower than the speed at which the head 20 is raised by driving the air cylinder 25. The speed is set so that it does not fall off the head 20 even if it touches the head slightly. It should be noted that the ascending speed can be experimentally obtained by examining the drop-off frequency of the component when removing the component from the tape based on the head elevating speed and the size of the component.

On the other hand, if it is determined in step S2 that the size of the mounted component is larger than the predetermined value,
The process proceeds to step S12, where the lifting and lowering of the head 20 is controlled as described below when picking up the component.

First, the frame 22 is lowered by driving the Z-axis servo motor 21, thereby lowering all the heads 20 integrally from the raised position to the intermediate standby position (step S12). Further, the head 2 to be used for sucking parts
0, the head 20 is lowered from the intermediate standby position to the lower position by driving the air cylinder 25, and the head 20 is lowered at a predetermined timing during the lowering of the head 20. A negative pressure is supplied into the head 20, and the components are sucked by the head 20 (steps S13, S14).

Thereafter, the lifting / lowering switching valve 43 corresponding to the head 20 on which the component has been sucked is switched to the ascending drive state, whereby the air cylinder 25 is driven to raise the head 20 to the intermediate standby position (step S15).

When a component is picked up by the head 20, it is determined whether there is another component to be picked up next (step S8).
Then, the process proceeds to 1 and the head unit 5 is disposed above the component supply unit 4.

On the other hand, when there is no component to be sucked, Z
The frame 22 is raised by driving the shaft servomotor 21, and each head 20 that has picked up a component is arranged at the raised position (step S <b> 9).

After moving the head unit 5 above the printed circuit board 3, the heads 20 are sequentially driven up and down, and the supply of the negative pressure to the heads 20 is interrupted at the timing when each head 20 reaches the lowered position. Then, the components are mounted on the printed circuit board 3 and the flowchart ends (steps S10 and S11).

Although the control of the elevating operation of the head 20 at the time of component mounting is not described in detail, in this case, first, the frame 2 is driven by the Z-axis servomotor 21.
2, the entire head 20 is lowered to the intermediate standby position. After that, regardless of the size of the parts, the lift switching valve 43 corresponding to each head 20 is continuously switched between the down drive state and the up drive state, whereby
Is moved up and down by driving the air cylinder 25, and components are mounted during this up / down operation. Then, by driving the Z-axis servo motor 21, all the heads 20 are moved up to the rising position.

Here, of the mounting operations described above, the lifting and lowering operations of the head 20 at the time of picking up components are briefly summarized as follows.

First, all the heads 20 are lowered to the intermediate standby position by driving the Z-axis servo motor 21, and then the individual heads 20 are displaced from the intermediate position to the lowered position by driving the air cylinder 25 to remove parts. Adsorb.

The lifting operation of the head 20 after the suction of the component differs depending on the size of the component. First, when the suction component is smaller than a predetermined size, the lifting of the frame 22 by driving the Z-axis servomotor 21 is performed. Accordingly, the head 20 is raised at a relatively slow speed until the component is removed from the component storage portion of the tape. Then, when the component is taken out of the component storage section, the air cylinder 25 is subsequently driven, whereby the head 20 is raised at a high speed.

On the other hand, if the component exceeds a predetermined size, the air cylinder 25 is driven immediately after the component is sucked, and the head 20 is raised at a high speed.

When the suction of all the components is completed,
As the frame 22 is raised by driving the Z-axis servo motor 21, all the heads 20 are reset to the raised position integrally with the components being sucked.

As described above, in the above mounting machine, a component having poor suction stability is determined based on the size of the component, and the component is picked up after the component is sucked until the component is removed from the component storage section of the tape. During this time, the head 20 is gently lifted by driving the Z-axis servo motor 21 to prevent the components from falling off due to the contact of the components with the side walls of the component storage section. Even when a component with a poor quality is mounted, the component can be satisfactorily sucked and the tape feeder 4a can be taken out. In addition, after the components are taken out of the component storage unit, the air cylinder 25 is immediately driven to quickly raise the head 20, so that the time loss at the time of suction can be minimized.

Therefore, as compared with a case where the ascent / descent speed of the entire elevating / lowering stroke is uniformly set to be lower and the attraction property is improved, it is possible to achieve a high mounting efficiency while reliably sucking the components. This has the effect.

In addition, in the above mounting machine, the initial ascent operation of the head 20 when sucking a component having poor suction stability is performed by Z
Since the rotation is performed by driving the axis servomotor 21, the rising speed and the rising amount of the head 20 at this time can be arbitrarily set. In other words, there is a high degree of freedom regarding the ascending speed and the ascending amount. Therefore, it is possible to set the ascending speed and the ascending amount of the initial ascending operation of the head 20 to the optimum values, and there is also an effect that the components can be more reliably sucked.

The mounting machine described above is one embodiment of the mounting machine according to the present invention, and its specific configuration can be changed as appropriate without departing from the gist of the present invention.

For example, when the head is lowered before suctioning the components, the head 20 is first lowered at a high speed by driving the air cylinder 25, and then the head 20 is lowered by lowering the frame 22 by driving the Z-axis servo motor 21. You may make it descend | fall slowly to a position. This is effective, for example, in preventing damage to the nozzle 20c and the component due to collision between the component and the nozzle 20c when the head 20 reaches the lowered position during component suction.
Similarly, when ascending and descending at the time of component mounting, first, the head 20 is lowered at a high speed to a predetermined position by driving the air cylinder 25, and then the head 20 is lowered by lowering the frame 22 by driving the Z-axis servomotor 21. You may make it descend | fall slowly to a descending position. This is effective in preventing damage to the components and the printed circuit board 3 due to collision between the component and the printed circuit board 3 during component mounting.

Also, in the above embodiment, after the parts are sucked, Z
The speed and the amount of rise when the head 20 is gently raised by driving the shaft servomotor 21 are kept constant irrespective of the size of specific components. Since it depends on the specific size of the parts and the depth (dimension in the height direction) of the parts storage part of the tape,
For example, the optimal ascending speed and ascending amount for each type of component are stored in the storage means 52 in advance, and at the time of picking up the component, the Z axis is determined based on the speed or the like stored in the storage means 52 according to the type of component. The driving of the servomotor 21 may be controlled. With this configuration, it is possible to more reliably perform suction of a component having poor suction stability. When the head is lowered before sucking the component or when the component is mounted, the head 20 is first lowered at a high speed by driving the air cylinder 25, and then the head 20 is gradually moved to the lowered position by driving the Z-axis servo motor 21. As described above, the descent speed and descent amount when the head 20 is lowered by driving the Z-axis servo motor 21 may be stored in the storage means 52 in advance for each type of component.

[0062]

As described above, according to the present invention, by using the first mechanism using the air cylinder as a driving source and the second mechanism using a motor as a driving source, the head is moved to a predetermined raised position and a part. The head lifting / lowering mechanism is configured to move up and down over the lowering position for suction mounting, and the head is driven up and down by the second mechanism within a specific range from the lowering position. Even when the component is picked up and picked up by an unstable component, the head lifting speed immediately after component picking up can be set arbitrarily according to the type of the component. Therefore, for example, immediately after component adsorption,
By raising the head at a slow speed suitable for the component, it is possible to reliably suck the component, which is a component having poor suction stability, and to remove the component from the component supply unit. In addition, after the head is raised to a point where the suction state is stabilized, the head can be quickly raised to the raised position by the first mechanism, so that the time loss during suction can be minimized. Therefore, as compared with the case where the lifting speed of the entire lifting stroke is uniformly set to be low and the suction performance is improved, there is an effect that high mounting efficiency can be achieved while the components are reliably suctioned. .

In particular, the above-described specific range and the head elevating speed in the specific range are stored in advance in accordance with the type of component, and the elevating drive of the head is controlled in accordance with the stored content for each type of component. Then, the components can be more reliably sucked.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing an example of a surface mounter of the present invention.

FIG. 2 is a front view showing a configuration of a head unit mounted on the surface mounter.

FIG. 3 is a side view of the head unit.

FIG. 4 is a cross-sectional view of a main part showing a head and a lifting drive mechanism (first mechanism) thereof.

FIG. 5 is a block diagram showing a control system of the surface mounter.

FIG. 6 is a flowchart illustrating an example of a mounting operation.

[Explanation of symbols]

 5 Head unit 10, 16, 21a Position detecting means 20 Head 20a Shaft 20b Nozzle holder 20c Nozzle 21 Z-axis servo motor 22 Frame 25 Air cylinder 33 Piston 34 Upper pressure chamber 35 Lower pressure chamber 36, 37 Port 45 Main control means 46 To 49 drive control means 50 input means 51 display means 52 storage means

Claims (4)

[Claims] 1. A surface mounter comprising a movable head unit having a component suction head and a lifting drive mechanism for lifting and lowering the head, wherein the lifting drive mechanism uses the air cylinder as a drive source to drive the head. It has a first mechanism for raising and lowering the head by a fixed stroke, and a second mechanism for raising and lowering the head by using a motor as a driving source. And a control means for controlling the lifting drive mechanism to drive the head up and down by the second mechanism within a specific range from the lowered position. Surface mounting machine. 2. A storage means for storing the specific range according to the type of component is provided, and the control means controls the specific range corresponding to the component stored in the storage means according to the mounted component. 2. The surface mounting machine according to claim 1, wherein the head is driven up and down by the second mechanism. 3. A storage means for storing a head elevating speed in the specific range according to a type of a component, wherein the control means controls the elevation of the component stored in the storage means according to a mounted component. 3. The surface mounting machine according to claim 1, wherein the head is driven up and down by the second mechanism at a speed. 4. An apparatus for adsorbing and mounting components from a tape feeder that supplies components using the tape as a carrier, wherein the specific range is such that the head can take out components from a component storage portion formed on the tape. The surface mounter according to any one of claims 1 to 3, wherein a rise amount of the surface mount is set.