CN1109643C - Conveyer - Google Patents
Conveyer Download PDFInfo
- Publication number
- CN1109643C CN1109643C CN 97102287 CN97102287A CN1109643C CN 1109643 C CN1109643 C CN 1109643C CN 97102287 CN97102287 CN 97102287 CN 97102287 A CN97102287 A CN 97102287A CN 1109643 C CN1109643 C CN 1109643C
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- China
- Prior art keywords
- conveyer
- workpiece
- transmission
- belt
- guide rail
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- Expired - Lifetime
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Abstract
Disclosed is a conveyer which can convey magnetic works at a high speed with a low vibration and a low noise and, further, facilitates the highly accurate positioning. The conveyer has a nonmagnetic rail having a guide surface which guides the first surface of a work so as to slide freely and a conveying belt which has a conveying surface brought into contact with the second surface of the work and which moves freely along the rail. The belt is driven to circulate by a driving means. A magnet is provided so as to face the rail with the belt therebetween. The magnetic force of the magnet has a force component which attracts the second surface of the work tightly to the belt and a force component which attracts the first surface of the work to the rail.
Description
The present invention relates to a kind of conveyer, particularly a kind of conveyer of the lead frame that is suitable for transmitting magnetic work, for example manufactures by ferromagnetic material or magnetic material.
In general, when in the course of processing, transmitting strip material, for example lead frame, always get used to transmitting this material, and it can be cut into fixing length with conitnuous forms.In common conveyer, provide reciprocating conveying pawl.When carrying strip material, carry the hole engagement on pawl and the strip material, it is mobile that strip material is produced in this case.When carrying pawl to return, carry the hole on the pawl disengaging strip material, thereby make strip material keep motionless.At this moment, move backward, need to make strip material to keep motionless auxiliary device, for example cylinder or free-wheel clutch in order to prevent strip material.
In order to obtain high-precision strip material stop position, must limit its skew and vibration.For this reason, in common conveyer, make strip material under the tensile force of braking sprocket wheel and idler roller combined action generation, keep motionless.
Yet, in common conveyer, owing to carry pawl to break away from the hole of strip material in carrying banded materials process, therefore, the precision of its stop position is vulnerable to adverse effect under factor effects such as the location dimension precision (they are accumulated) of strip material and strip material expanded by heating.
In addition, owing under the cam mechanism effect, carry pawl to move back and forth, make the time of return of carrying pawl to turn back to initial position will influence intermittent time.And speed is high more, and is big more by vibration and the noise of carrying pawl and cam mechanism to produce.
In addition, also need to provide the device that prevents that strip material from moving backward, device of tensile force or the like is provided, thereby increase the volume of device.
Disclosed as Japanese unexamined utility model patent 7-35388 number, a kind of transmission guide piece is used in suggestion, wherein, guides a lead frame by the upper surface of non-magnetic guide rail, and non-magnetic guide is located at a side of guide rail upper surface, and magnet is embedded in the guide with proper spacing.
In this case, the side of lead frame by magnetic attraction and and guide contacts, can obtain high orientation precision like this.In addition, do not need to provide the device that prevents the device that strap-like member moves backward and tensile force is provided etc.
Yet, in this conveyer, still must use such as the transfer member of carrying pawl and transmit lead frame, like this, it is difficult realizing transmitting at a high speed under low vibration and low-noise situation.In addition, because lead frame and guide closed contact exist friction drag between guide and lead frame, like this, so that when transmitting it, a heavy load partly acts on the lead frame when the engagement of transmission parts and lead frame, as a result, might make lead frame expansion or distortion.
Therefore, an object of the present invention is to provide a kind of conveyer, it can hang down vibration and low noise ground transmits magnetic work, and can realize high fix.
In addition, the present invention also provides a kind of conveyer, and it can conveying work pieces and does not have excessive load to act on the workpiece.
To achieve these goals, provide a kind of according to device of the present invention, that transmission has two adjacently situated surfaces magnetic work, this device comprises: one has the nonmagnetic guide rail of spigot surface, and it guides the workpiece first surface slidably; One nonmagnetic transmission parts, it has the transmission surface that contacts with the workpiece second surface and can move along guide rail; The actuating device that drive transmission parts, it is moved relative to guide rail; And the magnet such as permanent magnet or electromagnet, it is installed in the opposition side of guide rail, and transmission parts is between them, and it can produce a magnetic force, and the component that the component that this magnetic force has the second surface that makes workpiece and a transmission parts closed contact and the first surface that makes workpiece contact with guide rail.
Preferably yoke is installed in two magnetic pole places of above-mentioned magnet, the spigot surface that makes guide rail is near magnetic pole of magnet and the interface between the yoke.
In addition, preferably transmission parts comprises non-magnetic belt, and actuator comprises on it around the belt pulley of belt and the motor of this belt pulley of driving.Some belts can adjacent to each otherly be placed, to form transmission parts.In addition, conveyer can comprise a turntable.
In addition, the present invention is suitable for transmitting thin and long workpiece, such as the magnetic strip material.
When transmission parts when the effect lower edge of actuator guide rail moves because the second surface of workpiece keeps closed contact with transmission parts under the effect of magnet, so workpiece moves with transmission parts.At this moment, the first surface of workpiece is guided slidably by the spigot surface of guide rail, and like this, workpiece is transmitted and keeps stable status.In transport process, workpiece moves and the closed contact of maintenance and transmission parts, and like this, load can not act on the part of workpiece in the concentrated area.Therefore can transmit there not being excessive loads to act under the situation on the workpiece, thereby prevent workpiece deformation or skew.
When transmission parts stopped suddenly, workpiece might move under the effect of force of inertia.Yet, in the present invention and since the second surface of workpiece under the effect of magnetic force with the transmission parts closed contact, therefore, even transmission parts stops suddenly, workpiece also can stop and can not producing mutually and move.In addition, do not need to provide the device that prevents that strip material from moving backward, or the device of tensile force is provided, thereby can reduce the volume of device.
Therefore transmission parts of the present invention is driven and rotates, and does not need to carry out return, like this, can carry out high speed transmission, though and speed increased and still do not had excessive vibration or noise.
That transmission parts of the present invention is suitable for rotating, parts continuously.It can be a belt, but also can be the turntable with cylindrical shape outer peripheral face.The transmission surface of transmission parts needs not be smooth.It can have the fitfull surface.
In addition, also act on effectively on the workpiece for the magnetic force that makes magnet transmits by transmission parts, preferably transmission parts is a thin-wall construction, and is made by the material with high magnetic permeability.
Two adjacently situated surfaces of workpiece are right angle not necessarily mutually.In addition, one of them curved surfaces.
The magnetic force of magnet comprises that one makes the second surface of workpiece and the component of transmission parts closed contact, the component that contacts with guide rail with a first surface that makes workpiece.In order to make the cliding friction between workpiece and the guide rail as much as possible little, preferably determine the position of magnet, the component that the second surface that makes workpiece and the component of transmission parts closed contact contact with guide rail greater than the first surface that makes workpiece.
In addition, the method that the present invention also provides a kind of transmission to have two adjacently situated surfaces magnetic work, this method may further comprise the steps: the first surface that guides described workpiece along a spigot surface slidably; One second surface that transmits surface and described workpiece is kept in touch, and described transmission surface can be moved relative to described spigot surface; Drive described transmission surface and it is moved relative to described spigot surface; And produce a magnetic force, and the component that the component that this magnetic force has the second surface that makes workpiece and a surperficial closed contact of described transmission and the first surface that makes workpiece contact with described spigot surface.
Fig. 1 is the schematic isometric according to first embodiment of the demonstration of conveyer of the present invention;
Fig. 2 is the front elevation of conveyer shown in Figure 1;
Fig. 3 is the planar view of conveyer shown in Figure 2;
Fig. 4 is the left view of conveyer shown in Figure 2;
Fig. 5 is the right elevation of conveyer shown in Figure 2;
Fig. 6 is the partial perspective view of the amplification of conveyer shown in Figure 2, and it has shown a section along the VI-VI line among Fig. 2;
Fig. 7 is a cutaway view, and it has shown the direction of the magnetic line of force in the conveyer among Fig. 2;
Fig. 8 is the block diagram of the signal after several conveyers shown in Figure 1 are connected to each other;
Fig. 9 is the block diagram of another kind of workpiece example;
Figure 10 is the cutaway view according to the conveyer of second embodiment of demonstration of the present invention; And
Figure 11 is the block diagram according to the conveyer of the 3rd embodiment of demonstration of the present invention.
Fig. 1 to 7 has shown the first embodiment of the present invention.The workpiece that is transmitted by this conveyer is lead frame W.
As shown in figs. 1 and 6, the lead frame W of present embodiment is cut into regular length.Lead frame W forms by punching press on the magnetic holding plate that approaches, for example manufactured by ferromagnetic material.Connecting plate b with sprocket hole a is formed on vertical side of lead frame.On another side, have basically along the plurality of terminals part c that gives prominence to perpendicular to the direction of connecting plate b.
Conveyer has guide rail 1, and it is supporting the side surface (first face) of connecting plate b slidably.Guide rail 1 is by non-magnetic material (for example, a kind of material with high permeability), makes such as corrosion-resistant steel, aluminium, resin or other nonferromugnetic material.Suitably provide fluorine resin coating or similar material thereon on (spigot surface) 2 of surface, to reduce the friction drag between surface 2 and the lead frame W.As shown in Figure 6, guide rail 1 is fixed on the front surface of guiderail base 3 by screw 4, and this guiderail base 3 is made by non-magnetic material.Permanent magnet 5 is installed on guiderail base 3, and is separately fixed at its N and S extremely goes up by the yoke 6 and 7 that magnetic material is made.Permanent magnet 5 is fixed on the guiderail base 3 by the magnet fixed mount 8 that appropriate intervals is provided.Because yoke 6 and 7 is the long materials that have with guiderail base 3 basic identical length, does not therefore need permanent magnet 5 also to be and yoke 6 and 7 identical long materials.Thereby also mounting permanent magnet discontinuously.Magnet fixed mount 8 is fixed on the guiderail base 3 by screw 9.
Shown in Fig. 2 to 5, the both ends of the guiderail base 3 on level attitude are by supporting base 10 and 11 supportings.Comprise that servomotor or pulse motor or other similar CD-ROM drive motor 12 are fixed on the supporting base 10.The turning cylinder 13 of motor 12 is connected with drive side belt pulley 15 by a coupler 14.But another supporting base 11 is provided with the sliding stand 16 of horizontal slip, and the intermediation of stretch pulley 18 (also as negative pulley wheel) by bolster 17 is installed in rotation on this sliding stand 16.Tensioning adjustable bolt 20 is threaded with the support 19 that is fixed on supporting base 11 tops, and tensioning spring 21 is installed between bolt 20 and the sliding stand 16.As a result, stretch pulley 18 is urged along the direction opposite with drive pulley 15 under the resilient force of tensioning spring 21, and this elastic force can be adjusted by bolt 20, and is as described below thus, can adjust the tension force of belt 22.
Strain under the tension force effect between drive pulley 15 and the stretch pulley 18 by the belt 22 that non-magnetic material is made, and be driven and along horizontally rotating.Belt 22 is resin belt or the belt made by stainless steel and other metal materials.Belt 22 is thinner, and transmission surface (conveyor side) 22a of belt 22 energy parallel motion is by the gap between upper magnet yoke 6 and the guide rail 1.The back side of belt 22 is by the side support of yoke 6, and the transmission of belt 22 surface 22a then is substantially perpendicular to the spigot surface 2 of guide rail 1.Transmit end face (second face) closed contact of the connecting plate b of surperficial 22a and lead frame W.
Introduce the service condition of this conveyer below.Because yoke 6 and 7 is installed on the last magnetic pole and lower magnetic pole of permanent magnet 5, magnetic line of force concentrate on as shown in Figure 7 yoke 6 and 7 and permanent magnet 5 between interface on.Because just in time near the interface between upper magnet yoke 6 and the permanent magnet 5, the connecting plate b of the lead frame W that slides also just in time is positioned at the place that this magnetic line of force is concentrated for the spigot surface 2 of guide rail 1, be subjected to the effective function of magnetic line of force thus on spigot surface 2.
Here, the magnetic force that acts on the lead frame W can be divided into two component X and Y.Be that component X is the component of end face closed contact belt 22 that makes the connecting plate b of lead frame W, and component Y is the component of side closed contact guide rail 1 that makes the connecting plate b of lead frame W, component X is greater than component Y.
Because the magnetic force of permanent magnet 5 is as mentioned above, spigot surface 2 closed contacts of maintenance of the side of lead frame W and guide rail 1, and the end face of lead frame W keeps and the surperficial 22a closed contact of the transmission of belt 22 simultaneously.Like this, when belt 22 was driven, lead frame W and belt 22 were integral and are transmitted, and slided on guide rail 1 simultaneously.Like this, even belt 22 high-speed mobile also can be avoided rising, skew and the distortion etc. of lead frame W.In addition,, the belt 22 that constitutes transmission parts rotates owing to being driven, but the therefore generation of constrained vibration or noise, and adopting in the reciprocating common conveying pawl, this is recurrent.
When belt 22 stopped operating, lead frame W remained on the stop position under the magnetic action of permanent magnet 5, and like this, even vibrated in this case or impact, the position of lead frame W can not departed from yet, and obtains high-precision location thus.Like this, when this conveyer is used for the fc-specific test FC operation of assembling procedure or electronic component, almost there is not any skew with regard to the position of electronic component.In addition, the device that no longer needs to prevent the device that lead frame W moves backward or tensile force is provided, thus can reduce the volume of device and make its simplification.
In general, transmitting the strip material be cut into regular length is the comparison difficulty, so this class transmits one to being to carry out with continuous form.On the contrary, in the present invention, but strip material can be cut into fixing length, and transmit it with this shape.Thereby this conveyer can be used for the product of all size.
In addition, by the driving of control motor 12, can change the delivery speed of lead frame W.Except continuous conveying, also can carry out intermittent delivery, forward/backward conversion or the like.
Though described the foregoing description at single assembly, also several devices can be linked to be a row, as shown in Figure 8.In this case, it is elongated to transmit route, and workpiece can transmit between many operations.In this case, but by control each the device on motor also driven in synchronism these the device on belts.
Like this, can increase according to the needs of Fabricating machinery or the minimizing device, thus, realize the improvement aspect Design freedom.
Fig. 9 has shown another example of workpiece, and this workpiece can be transmitted by the conveyer in the foregoing description.
This workpiece W is the pallet that a kind of (for example) is made up of magnetic material, and its upper surface is formed with many grooves d.In these grooves d, laying finding e, for example chip element.
In this case, the lower surface of pallet W is still supported slidably by the spigot surface 2 of guide rail 1, and the side surface of pallet W and belt 22 closed contacts.
Be subjected to the infringement of grooves d inwall for fear of chip element e, available elastomeric material, for example silaatic are made the inwall of grooves d.
Figure 10 has shown the conveyer according to second embodiment of the invention.
This conveyer uses has the nonmagnetic turntable 30 of cylindrical shape periphery wall 31 as transmission parts.The turning cylinder 32 of turntable 30 is driven by motor 33.Permanent magnet 34 and the yoke 35 and 36 on the lower magnetic pole thereon in the installed inside of periphery wall 31.Guide rail 37 banded or arc is installed in the outside of periphery wall.
Workpiece W places on the guide rail 37 slidably, and its side surface under the magnetic action of permanent magnet 34 with turntable 30 on periphery wall 31 closed contacts.Like this, when turntable rotated, workpiece W was transmitted by band shape with the periphery wall 31 of turntable 30.
In this case, the same with first embodiment, even turntable 30 high speed rotating almost also not vibration or noise, and with regard to workpiece W with respect to its sense of motion, also can obtain high-precision stop position.
Figure 11 has shown the conveyer according to third embodiment of the invention.
This conveyer is used to transmit the workpiece W of broad, as have IC (integrated circuit) lead frame of mask f in each side.Article two, non-magnetic guide rail 41 and 42 is installed parallel to each other and is fixed on the base 40, and is similar to the outside that belt shown in Figure 1 22 is installed in guide rail 41.In the inboard of belt 22, a magnet (not shown) and a yoke 6 are installed, and parallel with the sense of motion of belt 22.At an end of belt 22, a drive pulley 15 is installed.This belt pulley drives by being installed in base 40 following motors 12.In addition, at the other end of belt 22, also the stretch pulley 18 as negative pulley wheel is rotatably supported on the base 40.
In this embodiment, the lower surface of side surface of workpiece part is supported by pair of guide rails 41 and 42, like this, even under the situation of broad workpiece W, also can carry out stable transmission.
The foregoing description has only been described examples more of the present invention, much less also has many possible variations.
In the foregoing description, be a horizontal surface though guide the spigot surface of workpiece first surface slidably, and the transmission surface that contacts with the workpiece second surface is a vertical surface, also can transmit the surface is a horizontal surface, and spigot surface is a vertical surface.
In addition, spigot surface and transmission surface are not necessarily orthogonal.They can tilt and be out of square.
In the foregoing description, yoke is fixed on the magnetic pole of permanent magnet, but also can not use yoke and make workpiece by spigot surface with transmit attracted by surfaces.Yet,, can increase density of line of magnetic force, thereby can more effectively attract workpiece as using yoke.
The magnet that the present invention uses is not limited to permanent magnet.Also can use electromagnet.Particularly, when from conveyer extraction workpiece, can easily extract workpiece by making the electromagnet demagnetization.
Can see that from top description according to the present invention, the first surface of workpiece is guided slidably by non-magnetic guide rail, and come conveying work pieces effectively by its second surface and non-magnetic transmission parts closed contact, like this, even under situation about transmitting at a high speed, also can obtain high-precision location.In addition, because first and second surfaces of workpiece attract by guide rail and transmission parts respectively, thereby the state of workpiece is stable, and can suddenly stop the transmission of workpiece, and the skew that can not produce the location of workpiece.
Therefore in addition, rotate, do not need to resemble to carry and carry out return the pawl, can under low vibration and low noise situation, carry out the high speed transmission thus owing to transmission parts is driven.
In addition, do not need to provide the device that prevents the device that workpiece moves backward or tensile force is provided, thereby can reduce the volume of conveyer and make its simplification.
The present invention is described by embodiment.Yet,, under the situation that does not break away from the scope of the present invention that limits by appended claims and design, also can make many other changes and improvements for those skilled in the art.
Claims (20)
1. device that transmission has two adjacently situated surfaces magnetic work, this device comprises:
One nonmagnetic guide rail, it has the spigot surface that guides described workpiece first surface slidably;
One nonmagnetic transmission parts, it has the transmission surface of keeping in touch with described workpiece second surface and can move relative to described guide rail;
The actuating device that drives described transmission parts and it is moved relative to described guide rail; And
One magnet, it is installed in the opposition side of described guide rail, and described transmission parts is between them, and it produces a magnetic force, and the component that the component that this magnetic force has the second surface that makes workpiece and a described transmission parts closed contact and the first surface that makes workpiece contact with described guide rail.
2. conveyer as claimed in claim 1 is characterized in that, yoke is fixedly mounted on the magnetic pole place of described magnet, and the spigot surface of described guide rail is near magnetic pole of described magnet and the interface between the yoke.
3. conveyer as claimed in claim 1 is characterized in that described transmission parts comprises non-magnetic belt, and described actuating device comprises on it around the belt pulley of belt and the motor of the described belt pulley of driving.
4. conveyer as claimed in claim 2 is characterized in that described transmission parts comprises non-magnetic belt, and described actuating device comprises on it around the belt pulley of belt and the motor of the described belt pulley of driving.
5. conveyer as claimed in claim 1 is characterized in that, described nonmagnetic transmission parts comprises all non-magnetic belts, and described actuating device comprises on it respectively around all belt pulleys of belt and at least one motor of the described all belt pulleys of driving.
6. conveyer as claimed in claim 1 is characterized in that, described nonmagnetic transmission parts comprises a turntable.
7. conveyer as claimed in claim 1 is characterized in that described workpiece comprises the magnetic strip material.
8. conveyer as claimed in claim 1 is characterized in that, described nonmagnetic guide rail comprises nonferromugnetic material.
9. conveyer as claimed in claim 1 is characterized in that, described nonmagnetic guide rail comprises the coating that is used for reducing friction drag between described guide rail and the described workpiece.
10. conveyer as claimed in claim 1 is characterized in that, also comprises the nonmagnetic guide rail of second.
11. conveyer as claimed in claim 1 is characterized in that, described nonmagnetic transmission parts comprises nonferromugnetic material.
12. conveyer as claimed in claim 1 is characterized in that, described magnet is a kind of in electromagnet and the permanent magnet.
13. conveyer as claimed in claim 1 is characterized in that, the described component that the second surface that makes workpiece and the described component of described transmission parts closed contact contact with described guide rail greater than the first surface that makes workpiece.
14. a transmission has the device of two adjacently situated surfaces magnetic work, this device comprises:
One guides the spigot surface of described workpiece first surface slidably;
The one transmission surface of keeping in touch with described workpiece second surface also can be moved relative to described spigot surface;
Drive the described actuating device that transmits the surface and it is moved relative to described spigot surface; And
One magnet, it is installed in the opposition side of described spigot surface, and described transmission surface is between them, and it produces a magnetic force, and the component that the component that this magnetic force has the second surface that makes workpiece and a surperficial closed contact of described transmission and the first surface that makes workpiece contact with described spigot surface.
15. conveyer as claimed in claim 14 is characterized in that, yoke is fixedly mounted on the magnetic pole place of described magnet, and described spigot surface is near magnetic pole of described magnet and the interface between the yoke.
16. conveyer as claimed in claim 14 is characterized in that, described transmission surface is on a belt, and described actuating device comprises on it around the belt pulley of belt and the motor of the described belt pulley of driving.
17. conveyer as claimed in claim 14 is characterized in that, described nonmagnetic transmission surface is on a turntable.
18. conveyer as claimed in claim 14 is characterized in that, the described component that the second surface that makes workpiece and the described component of the surperficial closed contact of described transmission contact with described spigot surface greater than the first surface that makes workpiece.
19. a transmission has the method for two adjacently situated surfaces magnetic work, this method may further comprise the steps:
Guide the first surface of described workpiece slidably along a spigot surface;
One second surface that transmits surface and described workpiece is kept in touch, and described transmission surface can be moved relative to described spigot surface;
Drive described transmission surface and it is moved relative to described spigot surface; And
Produce a magnetic force, and the component that the component that this magnetic force has the second surface that makes workpiece and a surperficial closed contact of described transmission and the first surface that makes workpiece contact with described spigot surface.
20. method as claimed in claim 19 is characterized in that, the step of described generation magnetic force also comprises: the described component that the second surface that makes workpiece and the described component of the surperficial closed contact of described transmission contact with described spigot surface greater than the first surface that makes workpiece.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08023229A JP3125670B2 (en) | 1996-01-16 | 1996-01-16 | Transfer device |
| JP23229/96 | 1996-01-16 | ||
| JP23229/1996 | 1996-01-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1163227A CN1163227A (en) | 1997-10-29 |
| CN1109643C true CN1109643C (en) | 2003-05-28 |
Family
ID=12104805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97102287 Expired - Lifetime CN1109643C (en) | 1996-01-16 | 1997-01-16 | Conveyer |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3125670B2 (en) |
| CN (1) | CN1109643C (en) |
| MY (1) | MY123849A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3702665B2 (en) | 1998-09-07 | 2005-10-05 | 株式会社村田製作所 | Transport device |
| ES2537079T3 (en) * | 2007-04-16 | 2015-06-02 | Crisplant A/S | Classification system with a drive using a synchronous linear motor |
| EP2847109B1 (en) * | 2012-05-11 | 2017-12-20 | Siemens Healthcare Diagnostics Inc. | Method and system for transporting sample tubes |
| CN106710711A (en) * | 2015-11-12 | 2017-05-24 | 无锡威格斯电气有限公司 | Heavy gauge wire guiding device |
| CN110758994A (en) * | 2019-12-11 | 2020-02-07 | 青岛黄海学院 | Computer nondestructive auxiliary machining and transporting equipment and working method thereof |
| JP7412160B2 (en) * | 2019-12-23 | 2024-01-12 | 三菱電機株式会社 | Frame transport device and semiconductor module manufacturing method |
| CN113232929A (en) * | 2021-05-27 | 2021-08-10 | 汕头市陀斯包装机械有限公司 | Material conveying device |
-
1996
- 1996-01-16 JP JP08023229A patent/JP3125670B2/en not_active Expired - Lifetime
-
1997
- 1997-01-10 MY MYPI97000104A patent/MY123849A/en unknown
- 1997-01-16 CN CN 97102287 patent/CN1109643C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| MY123849A (en) | 2006-06-30 |
| JPH09199516A (en) | 1997-07-31 |
| CN1163227A (en) | 1997-10-29 |
| JP3125670B2 (en) | 2001-01-22 |
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