KR100917869B1 - up and down apparatus of using cam - Google Patents

Abstract

Disclosed is a plurality of places (for example, four places) by the link movement of the link member for converting the rotational movement of the driving unit into a linear movement when the height of the height is adjusted in a predetermined section of the work line for transferring the semiconductor parts and the like. Cams are installed in each of the cam movement to move the plurality of lifting units (for example, four lifting units) in conjunction with each other to move up and down, the column, the base plate which is coupled to the lifting and lifting, The drive unit mounted on the base plate, the first and second link members to convert the rotational movement of the drive unit to a linear motion, and the link movement in linkage when the drive unit is driven, and the base is interlocked during the link movement of the first and second link members Lifting means for lifting the plate relative to the column, the lifting means, the first and second rotation coupled to the supporter and the cam groove of the column formed on the upper surface of the base plate A shaft, first and second drive shafts rotatably connected to one end of the first and second link members, first and second hinge shafts movably coupled to a support piece formed on an upper surface of the base plate, and the first and second hinge shafts. Is supported on the outer surface of the supporter so that the cam moves by the second rotating shaft, the first and second driving shafts, and the first and second hinge shafts, and the first and second hinge shafts are driven by the first and second hinge shafts. There is provided a cam driving type lifting device, characterized in that it comprises a cam for elevating the base plate with respect to the column in a driving direction in which the rotation shaft cam moves along the cam groove.

Lifting device, cam, rack gear, worm and worm wheel, link member

Description

Lifting device of cam driving method {up and down apparatus of using cam}

According to the present invention, when the height is adjusted in a predetermined section of a work line (or a device for assembling semiconductor parts, etc.) for transferring semiconductor parts, the lifting part of the cam driving method may be moved up and down by the driving part. It relates to a lifting device of a cam drive system.

More specifically, the cams installed in plural places (say, four places) are cam-moved by link movements of the link members for converting the rotational movement of the drive unit into linear movements, respectively. It relates to a lifting device of the cam drive system that can be moved up and down by interlocking with).

As shown in Figure 1, the hydraulic lifting device according to the prior art, the base plate 100,

A lifting plate 101 which is installed to be capable of lifting and lowering the base plate 100, and lifts a predetermined article;

The first arm 102 is pivotally fixed to the base plate 100 and the upper end is slidably supported on the elevating plate 101, and the intermediate side is foldably fixed to the first arm 102, Lifting means consisting of a second arm 103, the upper end is rotatably fixed to the steel plate 101 and supported to slide on the base plate 100,

A hydraulic cylinder 104 having a rod side fixed to the fixed portions of the first and second arms 102 and 103 and a cylinder side fixed to the base plate 100,

And a hydraulic unit 105 for supplying and controlling hydraulic oil to the hydraulic cylinder 104.

Therefore, due to the expansion and contraction of the hydraulic cylinder 104 described above, the predetermined article is lifted by the elevating plate 101 which is lifted by folding the first and second arms 102 and 103 around the hinge pin. Can be lowered.

Since the hydraulic lifting device according to the prior art uses hydraulic pressure as a power source for driving the hydraulic cylinder 104 to raise and lower the above-mentioned lifting plate 101, noise is severely generated during driving, and when a leakage occurs from the hydraulic component, And causing environmental pollution.

Meanwhile, although not shown in the drawings, many applications have been disclosed in connection with the technical content of elevating the elevating plate as the elevating plate installed to be elevated relative to the base plate is driven by the driving motor. .

In this case, when lifting the lifting plate due to the drive of the driving motor, the lifting plate is limited to maintain the minimum height due to the size of the corresponding parts such as the arm, so that the lifting height (the stroke) of the lifting plate is low. Has a problem that usage is restricted.

In addition, the process of transferring the power from the drive motor to the arm is complicated, so that the number of parts increases, the cost cost and manufacturing cost is increased, there is a problem in that the after-care costs due to frequent failures.

Embodiment of the present invention, in the case of adjusting the height of the height in a predetermined section of the work line for transporting semiconductor components, etc., the structure of the lifting device for lifting and lowering the lifting unit by driving the drive unit by simplifying and compacting the location and surrounding environment It is related to a cam driven lifting device which can be installed without interference.

An embodiment of the present invention relates to a cam drive type elevating device that enables to reduce the number of parts of the elevating device to reduce the cost and manufacturing cost.

An embodiment of the present invention relates to a cam drive type lifting device which can provide convenience to the user by eliminating the occurrence of a failure by configuring the driving means of the device as a mechanical mechanism to reduce the occurrence of failure.

The cam drive type elevating apparatus according to an embodiment of the present invention includes a column, a base plate coupled to the column to be liftable to the column, a drive unit mounted on the base plate, and a rotational movement of the drive unit into linear motion. And first and second link members interlocked and linked with each other when the driving unit is driven, and elevating means interlocked with each other during link movement of the first and second link members to lift and lower the base plate with respect to the column. First and second pivotal shafts coupled to the supporter and the cam groove of the column formed on the upper surface of the plate, first and second driving shafts rotatably connected to one end of the first and second link members, and a support piece formed on the upper surface of the base plate First and second hinge shafts movably coupled to the first and second hinge shafts, the first and second pivot shafts, the first and second driving shafts, and the first and second hinge shafts, respectively, being supported on the outer surface of the supporter to support the cam movement. The first and second hinge axes Along the first and second cam grooves into the rotation shaft mandrel in accordance with the driving direction in which the cam includes a cam movement to the base plate for lifting the column.

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In accordance with an embodiment of the present invention, a cam driving device includes: a column on which a caster is mounted on a bottom surface;

A base plate coupled to the column to be liftable and mounted on a top thereof with supporters each having a cam groove formed thereon;

A driving unit mounted to the base plate,

A first and second link members converting the rotational motion of the driving unit into linear motions and linked with each other when the driving unit is driven;

The first and second rotation shafts coupled through the column and the cam groove, respectively, and the first and second driving shafts and the first and second hinge shafts rotatably connected to one ends of the first and second link members, respectively, to support the cam motion. And a cam for elevating the base plate relative to the column according to the driving direction.

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The driving unit described above

A drive shaft on which a worm is formed,

A driven shaft having a worm wheel engaged with the worm and having a pinion formed at a lower end thereof;

A first rack gear formed on an inner surface of the first driving link of the first link member and engaged with the pinion;

A second rack gear is formed on the inner surface of the second driving link of the second link member to face the first rack gear and engages with the pinion.

The aforementioned drive shaft is manually operated by a handle connected to the drive shaft.

The drive shaft described above is automatically operated by a drive motor connected to the drive shaft.

The first link member described above

A first driving link having one end hinged to the first driving shaft,

A first hinge member fixed to the base plate by a first hinge pin and pivotally connected to one end of the first driving link;

One end is hinged to the other end of the first hinge member and the other end is hinged to the second drive shaft, and in the opposite direction to the first drive link by the first hinge member that is pivoted about the first axis of the drive when the drive unit is driven. And a first driven link driven to drive the second drive shaft.

The second link member described above

A second driving link having one end hinged to the second driving shaft,

A second hinge member fixed to the base plate by a second hinge pin so as to be rotatable and hinged to an intermediate side of the second driving link;

One end is hinged to the other end of the second hinge member and the other end is hinged to the first drive shaft, and in the opposite direction to the second drive link by a second hinge member that rotates the second hinge pin about its center axis when the drive unit is driven. And a second driven link driven to drive the first drive shaft.

It further includes a height adjustment opening is mounted to the edge of the base plate.

Both ends are fixed to the first and second hinge members rotatably fixed to the above-described base plate, and further comprising an elastic member for maintaining the balancing of the driving force for lifting the base plate.

It further comprises a pressing piece for preventing the lifting of the first and second link members from the base plate described above.

It further includes a caster rotatably mounted to the column bottom surface described above.

The first rotating shaft, the first driving shaft, and the first hinge shaft described above are disposed symmetrically with respect to the second rotating shaft, the second driving shaft, and the second hinge shaft, respectively.

The first and second link members described above are interlocked to drive the driving unit in the opposite directions.

As described above, the cam driving apparatus according to the embodiment of the present invention has the following advantages.

In the case of adjusting the height of the work line to transfer the semiconductor parts, etc., the structure of the lifting device which raises and lowers the lifting unit by the driving unit can be installed without the interference of the place and the surrounding items. .

In addition, the cost and manufacturing cost is reduced by reducing the number of parts of the lifting device can increase the price competitiveness.

In addition, the lifting device is configured as a mechanical mechanism, thereby reducing the occurrence of failure, so that post-management is unnecessary and thus the service life is extended, thereby providing convenience to the user.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings, which is intended to explain in detail enough to enable those skilled in the art to easily practice the present invention. It is not intended that the technical spirit and scope of the invention be limited.

As shown in Figures 2 to 11, the cam drive system lifting device according to an embodiment of the present invention, the column (2-5) is rotatably mounted to the caster 1 on the bottom surface, respectively,

A base plate (11) coupled to the column (2-5) so as to be liftable and mounted on an upper surface thereof with supporters (7-10) formed with a pair of cam grooves (6) opposed thereto;

A driving unit mounted on an upper surface of the base plate 11,

First and second link members (12, 13) and converts the rotational movement of the drive unit to a linear movement, the link movement in the opposite direction interlocked with each other when driving the drive unit,

Pressing pieces 14 and 15 fixed to the base plate 11 to prevent lifting of the first and second link members 12 and 13 from the base plate 11,

It includes lifting means for lifting the base plate 11 relative to the column (2-5) in conjunction with the link movement of the first and second link members (12, 13).

The above-mentioned lifting means,

First and second pivot shafts 16 and 17 coupled to the supporters 7-10 formed on the upper surface of the base plate 11 and the cam grooves 6 and 2a of the columns 2-5;

First and second drive shafts 18 and 19 rotatably connected to one ends of the first and second link members 12 and 13,

First and second hinge shafts 20 and 21 movably coupled to a support piece 44 formed on an upper surface of the base plate 11,

It is supported on the outer surface of the supporter (7-10) to cam movement by the first and second rotation shafts (16, 17), the first and second driving shafts (18, 19) and the first and second hinge shafts (20, 21). , When the first and second link members 12 and 13 are driven, the first and second pivot shafts 16 and 17 move about the cam groove 6 along the cam groove 6 about the first and second hinge shafts 20 and 21. A cam for elevating the base plate 11 by a predetermined stroke (referring to the distance between the top dead center 6a and the bottom dead center 6b of the cam groove 6) with respect to the column 2-5 according to the driving direction. (22-25).

The driving unit described above

A drive shaft 27 on which a worm 26 is formed,

A worm wheel 28 engaged with the worm 26 is formed, and a driven shaft 30 having a pinion 29 formed at a lower end thereof;

A first rack gear 32 formed on the inner surface of the first driving link 31 of the first link member 12 and engaged with the pinion 29;

And a second rack gear 34 formed at a position opposite to the first rack gear 32 on the inner surface of the second driving link 33 of the second link member 13 and engaged with the pinion 29. .

The drive shaft 27 described above may be manually operated by the handle 35 connected to the drive shaft 27.

The drive shaft 27 described above may be automatically operated by a drive motor (not shown) connected to the drive shaft 27.

The first link member 12 described above

A first driving link 31 hinged to one end of the first driving shaft 18;

A first hinge member 37 having an intermediate side rotatably fixed to the base plate 11 by a first hinge pin 36 and one end of which is hinged to one end of the first driving link 31;

One end hinged to the other end of the first hinge member 37 and the other end hinged to the second drive shaft 19, the first hinge member (36) rotated about the first hinge pin (36) about the central axis when driving the drive unit ( 37, the first driven link 38 is driven in the opposite direction to the first drive link 31 to drive the second drive shaft 19.

The second link member 13 described above

A second driving link 33 hinged to one end of the second driving shaft 19;

A second hinge member 40 whose middle side is rotatably fixed to the base plate 11 by a second hinge pin 39 and whose one end is hingedly connected to the middle side of the second driving link 33;

One end is hinged to the other end of the second hinge member 40 and the other end is hinged to the first drive shaft 18, and the second hinge member (39) rotated about the second hinge pin (39) around the central axis when the drive unit is driven. And a second driven link 41 driven in the opposite direction to the second drive link 33 by 40 to drive the first drive shaft 18.

It further includes a height adjusting device 42 which is mounted to the four corners of the base plate 11 above.

Both ends are fixed to the first and second hinge members 37 and 40 which are rotatably fixed to the base plate 11 by the first and second hinge pins 36 and 39, and the base plate 11 is elevated. It further includes an elastic member 43 (for example, a tensile coil spring is used) to maintain the balancing of the driving force to.

The cross-sectional shapes of the first and second hinge shafts 20 and 21 described above are formed as polygons (for example, hexagons are used).

The first rotation shaft 16, the first driving shaft 18, and the first hinge shaft 20 described above are the second rotation shaft 17, the second driving shaft 19, and the second hinge shaft 21. Are arranged symmetrically with respect to each other.

In the drawings, reference numeral 44 denotes a support piece for supporting the first and second drive shafts 18 and 19 and the first and second hinge axes 20 and 21, and 50 is mounted at the edge of the base plate 11 and drives the drive unit. An elevating object elevating by an elevating base plate 11 (for example, an apparatus for assembling a semiconductor component).

Hereinafter, with reference to the accompanying drawings an example of the use of the cam driving system lifting device according to an embodiment of the present invention will be described in detail.

6 and 7 are a side view and a plan view showing a state in which the base plate is lowered to a set minimum height in the cam driving device lifting device according to an embodiment of the present invention.

As shown in Figs. 2, 3, 4, 5, 6, 7, and 11, in the case of rotating the handle 35 detachably coupled to the drive shaft 27 described above, the drive shaft 27 The driven shaft 30 is rotated in a clockwise direction by mutual engagement of the formed worm 26 and the worm wheel 28. At this time, since the gear ratio of the worm 26 and the worm wheel 28 is 40: 1, the handle 35 can be rotated even with a small force.

The first drive link 31 is moved to the left in the drawing by the pinion 29 formed on the driven shaft 30 and the first rack gear 32 (indicated by an arrow), and at the same time The second driving link 33 is moved in the right direction on the drawing by the engagement of the 29 and the second rack gear 34 (indicated by the arrow).

At this time, as the first hinge member 37 hinged to one end of the first driving link 31 rotates clockwise with respect to the first hinge pin 36 as a central axis, the first hinge member 37 The first driven link 38 hinged at one end is moved to the right in the drawing (indicated by the arrow).

At the same time, as the second hinge member 40 hinged to the intermediate side of the second driving link 33 rotates counterclockwise around the second hinge pin 39, the second hinge member 40 The second driven link 41 hinged to one end of the c) is moved to the left in the drawing (indicated by an arrow).

Accordingly, the cams 22 and 23 are driven by the first hinge shaft 20 by driving one end of the first drive link 31 and the first drive shaft 18 hinged to one end of the second driven link 41. ) Cam as a central axis. As a result, the first pivot 16 is moved upward along the cam groove 6 to the top dead center 6a of the cam groove 6.

At the same time, the cams 24 and 25 are driven by the second hinge shafts by driving one end of the second drive link 33 and the second drive shaft 19 hinged to one end of the first driven link 38. Move the cam counterclockwise with 21) as the center axis. As a result, the second pivot 17 is moved upward along the cam groove 6 to the top dead center 6a.

For this reason, the base plate 11 can be lowered along the column 2-5 and lowered to the set minimum height. Therefore, four places of the elevating object 50 seated on the four corners of the base plate 11 can be lowered to a predetermined height at the same time. At this time, when the work line is adjusted to a predetermined height, the set height of the work line can be maintained by the height adjusting port 42 which is mounted on the four corners of the base plate 11 to be elevated.

8 and 9 are a side view and a plan view showing a state in which the base plate is raised to the set maximum height in the cam driving device lifting device according to an embodiment of the present invention.

As shown in FIGS. 2, 3, 4, 5, 8, 9, and 11, when the handle 35 that is detachably coupled to the above-described drive shaft 27 is rotated in the clockwise direction, it is formed on the drive shaft 27. The driven shaft 30 is rotated counterclockwise by mutual engagement of the worm 26 and the worm wheel 28.

The first driving link 31 is moved to the right in the drawing by mutual engagement of the pinion 29 and the first rack gear 32 formed on the driven shaft 30 described above, and at the same time, the pinion 29 and the second The second drive link 33 is moved to the left in the drawing by mutual engagement of the rack gears 34 (referring to gear engagement).

At this time, as the first hinge member 37 hinged to one end of the first driving link 31 rotates counterclockwise around the first hinge pin 36, the first hinge member 37 The first driven link 38 hinged at one end is moved leftward in the drawing.

At the same time, as the second hinge member 40 hinged to the intermediate side of the second driving link 33 rotates clockwise around the second hinge pin 39, the second hinge member 40 The second driven link 41 hinged to one end of the plate is moved in the right direction on the drawing.

Accordingly, the cams 22 and 23 are driven by the first hinge shaft 20 by driving one end of the first drive link 31 and the first drive shaft 18 hinged to one end of the second driven link 41. ) As the center axis and cam movement counterclockwise. As a result, the first pivot 16 is moved downward along the cam groove 6 to the bottom dead center 6b of the cam groove 6.

At the same time, the cams 24 and 25 are driven by the second hinge shafts by driving one end of the second drive link 33 and the second drive shaft 19 hinged to one end of the first driven link 38. 21) Cam movement clockwise around the center axis. As a result, the second pivot 17 is moved downward along the cam groove 6 to the bottom dead center 6b of the cam groove 6.

For this reason, the base plate 11 can be raised along the column 2-5 to the highest height set. Therefore, four places of the elevating object 50 seated on the four corners of the base plate 11 can be simultaneously raised to a predetermined height. At this time, when the work line is adjusted to a predetermined height, the set height of the work line can be maintained by the height adjusting port 42 which is mounted on the four corners of the base plate 11 to be elevated.

At this time, when the base plate 11 is elevated due to the driving of the driving unit described above, since the gear ratio of the worm 26 and the worm wheel 28 is maintained at 40: 1, the object mounted on the base plate 11 is a heavy body. Even by operating the handle 35 with a small force can easily lift the base plate (11).

As described above, the cam drive type elevating apparatus according to the embodiment of the present invention, in the case of adjusting the height by raising or lowering the work line to a predetermined height in a predetermined section of the work line for transporting semiconductor goods and the like. As the driving means of the teeth, it is possible to simplify the structure and make it compact by configuring the mechanical mechanism using the link and the cam, thereby minimizing the interference from the place and the surrounding environment.

1 is a schematic view of a hydraulic lifting device according to the prior art,

2 is a perspective view of a cam driving device according to an embodiment of the present invention;

3 is a side view of the elevating device of the cam driving method according to the embodiment of the present invention;

4 is a plan view of the lifting device of the cam driving method according to an embodiment of the present invention,

5 is an exploded perspective view extracting the main portion of the lifting unit in the lifting device of the cam driving method according to an embodiment of the present invention,

6 is a side view showing the base plate when the base plate is moved to the set height in the cam drive type lifting apparatus according to the embodiment of the present invention;

FIG. 7 is a plan view relating to the operation of the lifting device shown in FIG. 6;

8 is a side view showing the base plate when the base plate is moved to the set height in the cam drive type lifting apparatus according to the embodiment of the present invention;

9 is a plan view relating to the operation of the elevating device shown in FIG.

10 is a state of use of the cam drive lifting device according to an embodiment of the present invention,

11 is a schematic plan view of a cam driving device according to an embodiment of the present invention.

* Explanation of symbols used in the main part of the drawing

One; Caster

3,5; column

7,9; supporter

11; Base plate

13; Second link member

15; Pressing piece

17; 2nd Coaxial

19; 2nd drive shaft

21; 2nd hinge axis

23,25; cam

27; driving axle

29; Pinion

31; 1st drive link

33; 2nd driving link

35; handle

37; First hinge member

39; 2nd hinge pin

41; Second driven link

43; Elastic member

Claims (14)

column; A base plate rotatably coupled to the column; A driving unit mounted to the base plate; First and second link members converting the rotational motion of the driving unit into linear motion and linked with each other when the driving unit is driven; And It includes lifting means for lifting the base plate relative to the column is linked to the link movement of the first and second link members, The elevating means includes: first and second rotation shafts coupled to the supporter and the cam groove of the column formed on the upper surface of the base plate, and first and second driving shafts rotatably connected to one end of the first and second link members; The supporter is cam-moved by the first and second hinge shafts movably coupled to the support pieces formed on the base plate, and the first and second pivot shafts, the first and second driving shafts, and the first and second hinge shafts. It is supported on the outer surface and the base plate is raised and lowered to the column in the driving direction in which the first and second rotation shafts cam cam along the cam groove when the first and second link members are driven. A cam drive type lifting device comprising a cam. A column on which the caster is mounted on the bottom surface; A base plate coupled to the column to be movable up and down, and having a supporter having cam grooves formed thereon, respectively; A driving unit mounted to the base plate; First and second link members converting the rotational movement of the driving unit into linear movements and linked with each other when the driving unit is driven; First and second rotation shafts coupled through the column and the cam groove, respectively, and first and second driving shafts and first and second hinge shafts rotatably connected to one ends of the first and second link members, respectively. And a cam for lifting and lowering the base plate with respect to the column according to a driving direction of the cam driving method. delete The method of claim 1 or 2, wherein the drive unit A drive shaft on which a worm is formed; A driven shaft having a worm wheel engaged with the worm and having a pinion formed at a lower end thereof; A first rack gear formed on an inner surface of the first driving link of the first link member and engaged with the pinion; And And a second rack gear formed on an inner surface of the second drive link of the second link member to face the first rack gear and engaged with the pinion. The cam drive system of claim 1, wherein the driving shaft is manually operated by a handle connected to the driving shaft. The cam driving method of claim 1, wherein the driving shaft is automatically operated by a driving motor connected to the driving shaft. The method of claim 2, wherein the first link member A first driving link having one end hinged to the first driving shaft; A first hinge member whose middle side is rotatably fixed to the base plate by a first hinge pin and hinged to one end of the first driving link; And One end is hinged to the other end of the first hinge member and the other end is hinged to the second drive shaft, the first drive by the first hinge member is rotated around the first hinge pin to the central axis when the drive unit is driven A cam driving type lifting device, comprising: a first driven link driven in a direction opposite to the link to drive the second drive shaft. The method of claim 2, wherein the second link member A second driving link having one end hinged to the second driving shaft; A second hinge member fixed to the base plate by a second hinge pin, the middle side of which is pivotally connected, and hinged to the middle side of the second driving link; And One end is hinged to the other end of the second hinge member and the other end is hinged to the first drive shaft, and the second drive is driven by a second hinge member that is rotated about the second hinge pin about a central axis when the drive unit is driven. A cam driving type lifting device, comprising: a second driven link driven in a direction opposite to the link to drive the first drive shaft. The cam driving method of claim 1 or 2, further comprising a height adjusting tool mounted to the edge of the base plate to be elevated. The method of claim 7 or 8, wherein both ends are fixed to the first and second hinge members rotatably fixed to the base plate, characterized in that it further comprises an elastic member for maintaining the balancing of the driving force for lifting the base plate Lifting device of cam drive system. The cam driving method of claim 1 or 2, further comprising a pressing piece that prevents lifting of the first and second link members from the base plate. The cam driving method of claim 1, further comprising a caster rotatably mounted on the bottom surface of the column. The cam driving method as set forth in claim 2, wherein the first rotation shaft, the first driving shaft, and the first hinge shaft are arranged in a left-right symmetry with respect to the second rotation shaft, the second driving shaft, and the second hinge shaft. Lifting device. The cam driving method of claim 1 or 2, wherein the first and second link members are interlocked and driven in opposite directions when driving the driving unit.

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