CN203817246U - Spherical ring rolling machine - Google Patents
Spherical ring rolling machine Download PDFInfo
- Publication number
- CN203817246U CN203817246U CN201420217772.6U CN201420217772U CN203817246U CN 203817246 U CN203817246 U CN 203817246U CN 201420217772 U CN201420217772 U CN 201420217772U CN 203817246 U CN203817246 U CN 203817246U
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- roller
- cylinder
- mandrel
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- support
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Abstract
The utility model discloses a spherical ring rolling machine which comprises a lathe bed, a drive device, a measurement device, a bracket, a mandrel, a main roller seat, a support and a main feed oil cylinder. The measurement device, the bracket, the mandrel, the main roller seat, the main feed oil cylinder and the support are sequentially arranged above the lathe bed from left to right. The inner wall of the lathe bed is provided with a sliding rail and a fixing plate. The support comprises a supporting base and a support arm, and the two sides of the supporting base are respectively provided with an idler wheel and are arranged in the sliding rail of the lathe bed through the idler wheels. The measurement device comprises an adjusting seat, a support seat, a sliding plate and a measurement part. The main roller seat is fixedly arranged on the fixing plate of the lathe bed, and the main roller seat is provided with a main roller. The mandrel is arranged at the free end of the support arm, the free end of the support arm is provided with an upper mandrel sleeve, and the supporting base is provided with a lower mandrel sleeve. The main feed oil cylinder is arranged on the main roller seat and the supporting base, and the bracket is arranged at the end of the supporting base. The spherical ring rolling machine is suitable for machining medium and large size spherical valve elements, has the advantages of being high in machining accuracy and improving labor intensity.
Description
Technical field
The utility model relates to Ring Rolling Machine field, especially a kind of ball-type Ring Rolling Machine that is applicable to process the contour footpath of big-and-middle-sized ball-type spool ring-type product.
Background technology
Ring Rolling Machine of the prior art, generally can only spreading cross section the circulus that is rectangle, meanwhile, due to the limitation of equipment, can only process some diameters compared with circlet shape product, as diameter is less than the ring-type product of 1000mm, machining kinds is single.And due to the shortage of device for accurately measuring on equipment, the finished product accuracy processing is low.
Utility model content
The purpose of this utility model is to provide a kind of Ring Rolling Machine of high accuracy processing ball-type spool.
The circulus that what the utility model solved is existing Ring Rolling Machine generally can only spreading cross section is rectangle, meanwhile, due to the limitation of equipment, can only process some diameters compared with circlet shape product, and due to the shortage of device for accurately measuring on equipment, the low problem of finished product accuracy processing.
The technical scheme that the utility model solves its technical problem employing is: comprise lathe bed, drive unit, measurement mechanism, bracket, mandrel, king roller seat, support and main feed cylinder; Described drive unit comprises reductor and main motor; Drive unit is installed on the below of lathe bed; Measurement mechanism, bracket, mandrel, king roller seat, main feed cylinder and support have arrayed from left to right above described lathe bed; The inwall of described lathe bed is provided with slide rail and fixed head, and fixed head is provided with fixing hole; Described support comprises bearing and support arm, and one end of support arm is articulated with on bearing and can rotates along bearing, and the other end is free end; Bearing both sides are provided with roller and utilize roller support to be installed in the slide rail of lathe bed; Described measurement mechanism comprises adjusting seat, supporting seat, slide plate and measurement component; Supporting seat is located in adjusting seat, and slide plate is located on supporting seat, and measurement component is installed on slide plate; Described king roller seat is fixedly mounted on the fixed head of lathe bed, and upper bracket and lower carriage are installed on king roller seat, and king roller axle is installed between upper bracket and lower carriage; The outside cover of described king roller axle has king roller, the outer peripheral face of described king roller to comprise the camber section of straightway and indent; Described support arm covers on king roller seat; Described king roller seat both sides are provided with auxiliary roller; Described mandrel is installed on the free end and bearing of support arm, on the free end of support arm, is provided with on mandrel and overlaps, and mandrel is installed on bearing and traps, and the upper end of described mandrel is assigned on mandrel and overlapped, and the lower end of mandrel utilizes pull bar to be placed in mandrel and traps; Described main feed cylinder is installed on king roller seat and bearing, comprises master cylinder cylinder, main cylinder piston-rod and main cylinder piston-rod head, and one end that main cylinder piston-rod is installed piston inserts in master cylinder cylinder, and the other end is connected with main cylinder piston-rod head; Master cylinder cylinder utilizes connecting axle to be installed on bearing, and main cylinder piston-rod head utilizes bearing pin to be installed on king roller seat; Described bracket is installed on the end of bearing, and the top of bracket is the free end of support arm.
The beneficial effects of the utility model are: on king roller of the present utility model, the design of straightway and indent segmental arc can process two types of ring that cross section is rectangle and ball-type rings, be particularly suitable for processing the ball-type spool of 700-1600mm, be also applicable to processing height-diameter flange, annular products, gear etc. with boss according to the structural design of king roller simultaneously.Measurement mechanism can be measured ring diameter in real time, with controlled rolling process, guarantees machining accuracy.Support arm on support utilizes engineering cylinder and the second oil cylinder to realize folding, thereby conveniently realizes loading and unloading.Auxiliary roller utilizes the effect of synchromesh gear, makes the dynamics of effect identical, can not cause the distortion of material, ensures the precision of processing.The combination of encoder assembly and tooth bar can, according to straight-line displacement, be measured the diameter of workpiece.The combination of gear piece and encoder assembly on auxiliary roller, can accurately measure auxiliary roller and turn over angle.
Have on the whole following some:
1, compact conformation, energy-conserving and environment-protective;
2, the product that adopts the utility model to process can improve density of material, economizes in raw materials;
3, significantly reduce labour intensity, improved quality and the production efficiency of product;
The utility model is of many uses, has a good application prospect.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the lathe bed of the utility model.
Fig. 3 is the structural representation of the support of the utility model.
Fig. 4 is the structural representation of the measurement mechanism of the utility model.
Fig. 5 is the structural representation of the king roller of the utility model.
Fig. 6 is the generalized section of the king roller of the utility model.
Fig. 7 is the generalized section of the king roller of the utility model.
Fig. 8 is the structural representation of the auxiliary roller of the utility model.
Fig. 9 is the installation generalized section of the mandrel of the utility model.
Figure 10 is side schematic view of the present utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, Figure 10 shows, the utility model comprises lathe bed 1, drive unit, measurement mechanism 2, bracket 10, mandrel 3, king roller seat 4, support 5 and main feed cylinder 6.Drive unit comprises reductor 9 and main motor 8.Drive unit is installed on the below of lathe bed 1.Lathe bed 1 top arrayed from left to right measurement mechanism 2, bracket 10, mandrel 3, king roller seat 4, main feed cylinder 6 and support 5.
As shown in Figure 2, the inwall of lathe bed 1 is provided with slide rail 1-1 and fixed head 1-2, and fixed head 1-2 is provided with fixing hole 1-3.
As shown in Figure 3, support comprises bearing 5-2 and support arm 5-1, and one end of support arm 5-1 is articulated with bearing 5-2 above and can be along bearing 5-2 rotation, and the other end is free end.Support arm 5-1 covers on king roller seat 4.Bearing 5-2 both sides are provided with roller and utilize roller to be installed in the slide rail 1-1 of lathe bed 1.The effect that is provided with the second oil cylinder 18, the second oil cylinders 18 between the bearing 5-2 of support 5 and support arm 5-1 drives the rotation of support arm 5-1.Roller comprises vertical roller 5-4 and side direction roller 5-3.
As shown in Figure 4, measurement mechanism comprises adjusting seat 2-1, supporting seat 2-2, slide plate 2-3 and measurement component; It is upper that supporting seat 2-2 is located at adjusting seat 2-1, and it is upper that slide plate 2-3 is located at supporting seat 2-2, and measurement component is installed on slide plate 2-3.
Measurement component comprises after-frame 2-12, guide pillar 2-7, guide holder 2-4, cylinder barrel 2-8, piston rod 2-10, head-measuring rack 2-6 and measures roller 2-5.After-frame 2-12 with on head-measuring rack 2-6, be respectively equipped with corresponding two through hole 2-12-1 and through hole 2-6-1.The two ends of guide pillar 2-7 are separately fixed at the through hole of after-frame 2-12 and head-measuring rack 2-6; It is upper that described guide holder 2-4 is arranged on slide plate 2-3, and guide holder 2-4 is provided with pilot hole 2-4-1; Guide pillar 2-7 is supported on guide holder 2-4 through pilot hole 2-4-1.Guide pillar 2-7 can slippage in guide holder 2-4.In the middle of slide plate 2-3, be provided with support ring 2-9, it is upper that cylinder barrel 2-8 is installed on support ring 2-9, and piston rod 2-10 installs an end plug of piston in cylinder barrel 2-8, and the other end is fixed on after-frame 2-12.Measuring roller 2-5 is installed on head-measuring rack 2-6.Measure roller 2-5 and be connected by measuring roller shaft 15 with head-measuring rack 2-6, the upper end of measuring roller shaft 15 is provided with through type forced filling oil cup 2-16, and the sidewall of measuring roller shaft 15 is provided with oil outlet (not shown).Through type forced filling oil cup 2-16 can play lubricated effect, and ensureing to measure roller 2-5 can smooth and easy and accurate measurement result in the time of work.
Supporting seat 2-2 both sides are provided with T-shaped guide rail 2-11, and slide plate 2-3 both sides are provided with fixing hole 2-3-1, and the position of fixing hole 2-3-1 is corresponding with T-shaped guide rail 2-11, utilize bolt can fix and the position of adjusting slider 2-3.A side of guide pillar 2-7 is provided with tooth bar 2-13, the side of supporting seat 2-2 is installed the first encoder assembly 2-14, the first encoder assembly 2-14 engages with tooth bar 2-13, and the straight-line displacement in ball-type spool process is measured in the combination of the first encoder assembly 2-14 and tooth bar 2-13.
As shown in Fig. 5, Fig. 6 Figure 10, king roller seat 4 is fixedly mounted on the fixed head 1-2 of lathe bed 1, king roller 11 is installed on king roller seat 4, upper bracket 4-1 and lower carriage 4-2 are installed on king roller seat 4, between upper bracket 4-1 and lower carriage 4-2, be installed with king roller axle 12.The outside cover of king roller axle 12 has king roller 11, the outer peripheral face of king roller 11 to comprise the camber section of straightway and indent.The lower end of king roller axle 12 utilizes shaft coupling to be connected with reductor 9.
As shown in Figure 6, the outside cover of king roller axle 12 has axle sleeve 4-4, between axle sleeve 4-4 and king roller axle 12, is connected by key 4-3, and king roller 11 is placed on the outside of axle sleeve 4-4, between king roller 11 and axle sleeve 4-4, is also connected by key 4-5.
As shown in Figure 8, on king roller seat 4, auxiliary roller 7 is installed.Auxiliary roller 7 comprises left arm 7-1, right arm 7-2 and the first oil cylinder 15, and left arm 7-1 and right arm 7-2 are located at respectively the both sides of king roller seat 4, and the first oil cylinder 15 has two, is connected to left arm 7-1 and right arm 7-2.Right arm 7-2 comprises Centering Roll 7-3, roller frame 7-4, guide plate 7-5, leading arm 7-6, axle sleeve 7-9, gear piece 7-12, rotating shaft 7-10 and gear 7-11.Centering Roll 7-3 is installed on roller frame 7-4, the back side of roller frame 7-4 is provided with guide plate 7-5, and it is upper that guide plate 7-5 is fixed in one end of leading arm 7-6, and the other end is placed on axle sleeve 7-9, between axle sleeve 7-9 and rotating shaft 7-10, be connected by key, the other end of rotating shaft 7-10 is connected with gear 7-11 by key.Gear piece 7-12 is installed on the below of axle sleeve 7-9.The lateral surface of leading arm 7-6 is provided with two otic placode 7-8, between two otic placode 7-8, is provided with bearing pin 7-7.The both sides of king roller seat 4 are separately installed with cylinder support 4-6 and the second encoder assembly 4-7, as shown in Figure 5.The angle that auxiliary roller 7 turns over can accurately be read by the second encoder assembly 4-7.First oil cylinder 15 one end are fixed on the cylinder support 4-6 of king roller seat 4, and the other end is connected in leading arm 7-6 by bearing pin 7-7 and otic placode 7-8.Left arm 7-1 and right arm 7-2 are with king roller seat 4 symmetries, and two gear engagements, realize synchronously and rotating.
As shown in Figure 9, mandrel 3 is installed on the free end and bearing 5-2 of support arm 5-1, on the free end of support arm 5-1, be provided with and on mandrel, overlap 5-1-1, the mandrel 5-2-1 that traps is installed on bearing 5-2, the upper end of mandrel 3 is assigned and on mandrel, is overlapped 5-1-1, and the lower end of mandrel 3 utilizes pull bar 16 to be placed in the mandrel 5-2-1 that traps.On mandrel, overlap 5-1-1 outer peripheral face and be provided with bearing group 17-1.The inner ring that overlaps 5-1-1 on mandrel is provided with top 19, and the upper end of top 19 connects an engineering cylinder 20.It is upper that engineering cylinder 20 utilizes bolt to be arranged on support arm 5-1, and the mandrel 5-2-1 that traps is provided with bearing group 17-2, main shaft 5-2-2 and pull bar 16 from outside to inside successively, the lower end of pull bar 16 connecting mandrels 3, and the below of main shaft 5-2-2 is provided with rotary sleeve 5-2-3.Engineering cylinder 20 and the second oil cylinder 18 actings in conjunction, drive lifting of support arm 5-1.
As shown in Figure 7, main feed cylinder 6 is installed on king roller seat 4 and bearing 5-2, comprise master cylinder cylinder 6-1, main cylinder piston-rod 6-2 and main cylinder piston-rod head 6-3, one end that main cylinder piston-rod 6-2 installs piston inserts in master cylinder cylinder 6-1, and the other end is connected with main cylinder piston-rod head 6-3; It is upper that master cylinder cylinder utilizes connecting axle 14 to be installed on bearing 5-2, and main cylinder piston-rod head 6-3 utilizes bearing pin 13 to be installed on king roller seat 4.
As shown in Figure 1, bracket 10 is installed on the end of bearing 5-2, and the top of bracket 10 is free ends of support arm 5-1.
King roller 11 can be according to size, the shape appropriate design of reality processing.
Operation principle: the roller that bearing utilizes both sides in the slide rail of lathe bed can before and after slippage, under the effect of main feed cylinder 6, bearing is moved to the most forward the position.Support arm 5-1 lifts under the control of the second oil cylinder 18 and engineering cylinder 19, now workpiece is slowly put into bracket 10 from the upper end of mandrel 3, and then support arm 5-1 moves down.After material loading completes, main motor 8 utilizes reductor 9 to drive the rotation of king roller axle 12, between king roller 11 and king roller axle 12, is connected with key by axle sleeve, and king roller 11 is also driven to rotate.Meanwhile, main feed cylinder 6 is with moving mandrel 3 slowly to move afterwards, between mandrel 3 and king roller 11, exerts pressure to workpiece.The auxiliary roller 7 of king roller seat 4 both sides, under the driving of the first oil cylinder 15, plays and helps the effect of workpiece, prevents that workpiece is stressed improper and be out of shape, and has improved the precision of processing.The rotation of king roller 11 drives the passive rotation of workpiece, mandrel 3 under the effect of frictional force, make workpiece rotational deformation between king roller 11, mandrel 3 and auxiliary roller 7, this spreading process increases the internal diameter of workpiece gradually, and profile is along the appearance and size spreading of king roller 11.Measurement mechanism is installed on the front of workpiece, measure roller 2-5 contact workpiece, in the process expanding gradually at the diameter of workpiece, measuring roller 2-5 can be under the movement of guide pillar 2-7, progressively retreat, the movement of the moving belt carry-over bar 2-13 of guide pillar 2-7, the diameter of the range measurement workpiece that the first encoder assembly 2-14 can move according to tooth bar 2-13, carrys out the process of controlled rolling with this.
Claims (10)
1. a ball-type Ring Rolling Machine, comprises lathe bed, drive unit, measurement mechanism, bracket, mandrel, king roller seat, support and main feed cylinder; Described drive unit comprises reductor and main motor; Drive unit is installed on the below of lathe bed; Measurement mechanism, bracket, mandrel, king roller seat, main feed cylinder and support have arrayed from left to right above described lathe bed; The inwall that it is characterized in that described lathe bed is provided with slide rail and fixed head, and fixed head is provided with fixing hole; Described support comprises bearing and support arm, and one end of support arm is articulated with on bearing and can rotates along bearing, and the other end is free end; Bearing both sides are provided with roller and utilize roller support to be installed in the slide rail of lathe bed; Described measurement mechanism comprises adjusting seat, supporting seat, slide plate and measurement component; Supporting seat is located in adjusting seat, and slide plate is located on supporting seat, and measurement component is installed on slide plate; Described king roller seat is fixedly mounted on the fixed head of lathe bed, and upper bracket and lower carriage are installed on king roller seat, and king roller axle is installed between upper bracket and lower carriage; The outside cover of described king roller axle has king roller, the outer peripheral face of described king roller to comprise the camber section of straightway and indent; Described support arm covers on king roller seat; Described king roller seat both sides are provided with auxiliary roller; Described mandrel is installed on the free end and bearing of support arm, on the free end of support arm, is provided with on mandrel and overlaps, and mandrel is installed on bearing and traps, and the upper end of described mandrel is assigned on mandrel and overlapped, and the lower end of mandrel utilizes pull bar to be placed in mandrel and traps; Described main feed cylinder is installed on king roller seat and bearing, comprises master cylinder cylinder, main cylinder piston-rod and main cylinder piston-rod head, and one end that main cylinder piston-rod is installed piston inserts in master cylinder cylinder, and the other end is connected with main cylinder piston-rod head; Master cylinder cylinder utilizes connecting axle to be installed on bearing, and main cylinder piston-rod head utilizes bearing pin to be installed on king roller seat; Described bracket is installed on the end of bearing, and the top of bracket is the free end of support arm.
2. ball-type Ring Rolling Machine according to claim 1, is characterized in that described measurement component comprises after-frame, guide pillar, guide holder, cylinder barrel, piston rod, head-measuring rack and measurement roller; Described after-frame with on head-measuring rack, be respectively equipped with corresponding two through hole, the two ends of described guide pillar are separately fixed at the through hole of after-frame and head-measuring rack; Described guide holder is arranged on slide plate, and guide holder is provided with pilot hole; Described guide pillar is supported on guide holder through pilot hole; In the middle of described slide plate, be provided with support ring, described cylinder barrel is installed on support ring, and piston rod is installed an end plug of piston in cylinder barrel, and the other end is fixed on after-frame; Described measurement roller is installed on head-measuring rack; Measure roller and be connected by measuring roller shaft with head-measuring rack, the upper end of measuring roller shaft is provided with through type forced filling oil cup, and the sidewall of measuring roller shaft is provided with oil outlet.
3. ball-type Ring Rolling Machine according to claim 1, is characterized in that described supporting seat both sides are provided with T-shaped guide rail; Described slide plate both sides are provided with fixing hole, and the position of fixing hole is corresponding with T-shaped guide rail; One side of described guide pillar is provided with tooth bar, and the side of supporting seat is installed the first encoder assembly, and the first encoder assembly engages with tooth bar.
4. ball-type Ring Rolling Machine according to claim 1, it is characterized in that described auxiliary roller comprises left arm, right arm and the first oil cylinder, left arm and right arm are located at respectively the both sides of king roller seat, and the first described oil cylinder has two, are connected to left arm and right arm; Described right arm comprises Centering Roll, roller frame, guide plate, leading arm, axle sleeve, gear piece, rotating shaft and gear; Described Centering Roll is installed on roller frame, and the back side of roller frame is provided with guide plate, and one end of leading arm is fixed on guide plate, and the other end is placed on axle sleeve, between axle sleeve and rotating shaft, is connected by the second key, and the other end of rotating shaft is connected with gear by triple bond; Described gear piece is installed on the below of axle sleeve; The lateral surface of described leading arm is provided with two otic placodes, between two otic placodes, is provided with bearing pin; The both sides of described king roller seat are separately installed with cylinder support and the second encoder assembly; First described oil cylinder one end is fixed on the cylinder support of king roller seat, and the other end is connected in leading arm by bearing pin and otic placode; Described left arm and right arm are with king roller seat symmetry, and two gear engagements, realize synchronously and rotating.
5. ball-type Ring Rolling Machine according to claim 1, is characterized in that the outside cover of described king roller axle has axle sleeve, between axle sleeve and king roller axle, is connected by key, and king roller is placed on the outside of axle sleeve, between king roller and axle sleeve, is also connected by key.
6. ball-type Ring Rolling Machine according to claim 1, is characterized in that on described mandrel, overlapping outer peripheral face is provided with bearing group; The inner ring overlapping on described mandrel is provided with top, and the upper end of described top connects an engineering cylinder, and described engineering cylinder utilizes bolt to be installed on support arm; Described mandrel is trapped bearing group, main shaft and pull bar is installed from outside to inside successively, the lower end of pull bar connecting mandrel, and the below of main shaft is provided with rotary sleeve.
7. ball-type Ring Rolling Machine according to claim 1, is characterized in that being provided with the second oil cylinder between the bearing of described support and support arm, and the effect of the second oil cylinder drives the rotation of support arm.
8. ball-type Ring Rolling Machine according to claim 1, is characterized in that the lower end of described king roller axle utilizes shaft coupling to be connected with reductor.
9. ball-type Ring Rolling Machine according to claim 1, is characterized in that described roller comprises vertical roller and side direction roller.
10. ball-type Ring Rolling Machine according to claim 1, is characterized in that described king roller can be according to size, the shape appropriate design of reality processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420217772.6U CN203817246U (en) | 2014-04-30 | 2014-04-30 | Spherical ring rolling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420217772.6U CN203817246U (en) | 2014-04-30 | 2014-04-30 | Spherical ring rolling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203817246U true CN203817246U (en) | 2014-09-10 |
Family
ID=51472787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420217772.6U Expired - Fee Related CN203817246U (en) | 2014-04-30 | 2014-04-30 | Spherical ring rolling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203817246U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978133A (en) * | 2014-04-30 | 2014-08-13 | 浙江远大重工锻压有限公司 | Spherical ring rolling machine |
| CN105522082A (en) * | 2016-02-18 | 2016-04-27 | 诸城市圣阳机械有限公司 | Two-station radial horizontal type numerical-control ring rolling machine |
| CN108907045A (en) * | 2018-09-21 | 2018-11-30 | 济南沃茨数控机械有限公司 | A kind of roll axial regulating mechanism and Ring Rolling Machine |
-
2014
- 2014-04-30 CN CN201420217772.6U patent/CN203817246U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978133A (en) * | 2014-04-30 | 2014-08-13 | 浙江远大重工锻压有限公司 | Spherical ring rolling machine |
| CN103978133B (en) * | 2014-04-30 | 2016-08-24 | 浙江远大重工锻压有限公司 | Ball-type Ring Rolling Machine |
| CN105522082A (en) * | 2016-02-18 | 2016-04-27 | 诸城市圣阳机械有限公司 | Two-station radial horizontal type numerical-control ring rolling machine |
| CN108907045A (en) * | 2018-09-21 | 2018-11-30 | 济南沃茨数控机械有限公司 | A kind of roll axial regulating mechanism and Ring Rolling Machine |
| CN108907045B (en) * | 2018-09-21 | 2024-03-26 | 济南沃茨数控机械有限公司 | Roller axial adjusting mechanism and ring rolling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20150430 |
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| EXPY | Termination of patent right or utility model |