CN206662441U - Screw-rolling machine - Google Patents
Screw-rolling machine Download PDFInfo
- Publication number
- CN206662441U CN206662441U CN201720129264.6U CN201720129264U CN206662441U CN 206662441 U CN206662441 U CN 206662441U CN 201720129264 U CN201720129264 U CN 201720129264U CN 206662441 U CN206662441 U CN 206662441U
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- Prior art keywords
- material road
- workpiece
- screw
- blanking
- rolling machine
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Abstract
The utility model discloses a kind of screw-rolling machine,Although the automatic thread roller feeding speed for solving in the market is fast,But very easily there is workpiece among feeding process the problem of low precision,Workpiece is caused easily to occur processing a location dislocation,The processing problems such as ejection,Its drip irrigation device is to be provided with feed channel always at the processing stations,The initiating terminal of straight material road is used to connect feeder,Set in the end of straight material road and need material road,One feeding manipulator is by the piece-holder in material road to be expected and is delivered to put down at processing stations and is processed,A blanking mechanical hand is provided between the material road to be expected and processing stations,The workpiece processed is taken out and carries out blanking by the blanking mechanical hand from processing stations,It is accurate clamping among feeding manipulator clamping process has been reached,The division of labor of work flow chemical industry sequence is clear and definite,Feeding precision is high,It is low to there is error rate for part feeding and blanking in processing,Part rejection rate after processing is low.
Description
Technical field
It the utility model is related to screw-rolling machine, the stable screw-rolling machine of more particularly to a kind of feeding.
Background technology
At present, when producing the standard components such as screw rod, bolt, harness cord and non-standard component, generally use screw-rolling machine.Screw-rolling machine
Primary structure includes fuselage, a pair of thread rolling shafts and thread rolling shaft is positioned at the rolled thread axle bed of fuselage forming, encapsulation on rolled thread axle bed
Thread rolling die can produce.The characteristics of equipment is that the main shaft of two thread rolling shafts is parallel and be located at same horizontal plane, but by
It is located in the pull bar in cutter shaft fixed seat on the inside of fixed seat, annular knurl processing is carried out using artificial feeding style, is equipped with a masterpiece
Product is put into thread rolling shaft by industry person with hand-held mode.Annular knurl efficiency is very low, in process of production it occur frequently that manually putting
Put not in place, cause product quality unstable.
The utility model of Application No. 201520644661.8 discloses a kind of automatic charging screw-rolling machine, including fuselage, rolling
Silk device and automatic charging device, the automatic charging device are arranged on the side of thread rolling apparatus, and the automatic charging device is set
Put on the table, including material placing device and material-pulling device, set on the table, the Sheng material placing device tilting
Gap be present between material device and workbench, be provided with the gap and dial roller, described group of roller is connected with material-pulling device, realizes
, although this feeding speed accelerates, but very easily there is workpiece in feeding process in efficient automatic charging function
Central low precision, it is inaccurate easily to cause to enter in processing stations position, cause workpiece easily occur processing a location dislocation,
The processing problems such as ejection.
Utility model content
The purpose of this utility model be to provide its a kind of feeding device can stablize accurately conveying workpieces into processing stations
Screw-rolling machine.
To solve the above problems, the utility model provides a kind of screw-rolling machine, including screw-rolling machine body, in screw-rolling machine body
The processing stations of a pair of thread rolling shaft compositions are provided with, feed channel always, straight material road are being provided with the processing stations
Initiating terminal be used to connect feeder, set in the end of straight material road and need material road, a feeding manipulator, which will be located at, to be treated
Expect the piece-holder in material road and be delivered to put down at processing stations to be processed, between the material road to be expected and processing stations
A blanking mechanical hand is provided with, the workpiece processed is taken out and carries out blanking by the blanking mechanical hand from processing stations.
By using above-mentioned technical proposal, the workpiece brought in feeding station is introduced into straight material road, Jin Er
Ordered arrangement in straight material road, and set in the end of straight material road and need material road, can only it be put in the material road to be expected
A workpiece is put, is easy to the clamping of feeding manipulator, and workpiece is delivered in processing stations and is processed, after processing
Blanking is carried out by blanking mechanical hand, and then realizes Full-automatic blanking, and the workpiece for needing feeding is placed on material road to be expected
In, clamping among feeding manipulator clamping process accurately, is additionally provided with blanking mechanical hand and is used for blanking, work flow chemical industry sequence
The division of labor is clear and definite, and feeding precision is high, in processing part feeding and blanking occur that error rate is low, the part rejection rate after processing is low.
As further improvement of the present utility model, the initiating terminal of material road to be expected is provided with a limiting plate, described
The ejection pawl being vertically arranged between material road to be expected and straight material road, the ejection pawl will be close on limiting plate by cylinder driving
Workpiece eject to be sent into material road to be expected.
By using above-mentioned technical proposal, by being provided with limiting plate, and then serve and have workpiece in material road to be expected
In the case of, it can avoid rolling down by mistake clamping workpiece impacted by the workpiece in straight material road in straight material road, and
And when when expecting that the workpiece in material road is transported to processing stations, ejection pawl rises in the presence of cylinder, and then realizes tight
Workpiece on patch limiting plate is ejected, and is snapped down under gravity in material road to be expected, is realized the orderly supplement of subsequent workpiece.
As further improvement of the present utility model, the feeding manipulator is also driven with vertical by a vertical cylinder
Lifting on direction, a horizontal rail is provided with the track to be expected, the feeding manipulator and vertical cylinder are by one
Horizontal air cylinder driving can slide in horizontal rail.
By using above-mentioned technical proposal, by being provided with vertical cylinder and horizontal air cylinder, and then feeding machinery is realized
Hand is first driven in top corresponding to material road to be expected by vertical cylinder to be declined, and then clamping workpiece, and further passes through level
The driving of cylinder is delivered to the top of processing stations, then realizes by the driving of vertical cylinder again and declines feeding manipulator
To processing stations, then workpiece is placed into processing stations and is processed.
As further improvement of the present utility model, the feeding manipulator includes doing by gripper cylinder driving
The clamping jaw of move toward one another, the jaws of triangle is provided with the opposed faces of clamping jaw.
By using above-mentioned technical proposal, the jaws of triangle is provided with two clamping jaws, and then realize jaws energy
It is adapted to the workpiece of different size diameters.
As further improvement of the present utility model, parallel beneath corresponding to the horizontal rail is provided with a blanking
Track, slid in blanking track and be provided with a blanking seat, the blanking seat is driven by horizontal air cylinder, and close in blanking seat adds
Work station one end be provided with two panels can move toward one another holding piece.
By using above-mentioned technical proposal, because workpiece is usually that a headband has screw head, the diameter of screw head is more than spiral shell
The diameter of bar, so among blanking process, blanking seat moves under the driving of blanking track to processing stations direction first, this
When two pieces of holding pieces between spacing be more than workpiece maximum cross section width, then two pieces of holding pieces realized in move toward one another
Clamping for workpiece, then the return motion by blanking seat, workpiece is taken out of in processing stations.
As further improvement of the present utility model, the straight material road is tilted towards dividing into along workpiece blanking direction
Put, the bottom of straight material road is provided with base, polylith vibrating reed is provided with base, a bobbing machine is installed in one piece of vibration
On piece, polylith vibrating reed is realized by a connecting plate to be connected with straight material road.
By using above-mentioned technical proposal, by setting diagonally downward, workpiece has the trend moved downward, makes workpiece more
Add and conveniently enter in material road to be expected, and straight bobbing machine is provided with bottom, further avoid workpiece from being stuck in straight material road
Side, make, effect that motor pass through vibrating reed more smooth into material road to be expected so that vibration trend vibrates to be front and rear, Ran Houzhen
Dynamic frequency is directly transmitted by vibrating reed, and vibration frequency is high, and noise is small.
As further improvement of the present utility model, it is provided with close to the front end of the thread rolling shaft for placing workpiece
Frame feed collet.
By using above-mentioned technical proposal, by being provided with frame feed collet, frame feed collet is served for entering thread rolling shaft soon
Between workpiece serve spacing on position, avoid the sideslip of workpiece.
As further improvement of the present utility model, at least one limiting plate is provided with above the straight material road,
It is provided with and a plurality of guide roller in the raceway surface of the straight material road.
By using above-mentioned technical proposal, by being provided with limiting plate, avoid workpiece in the presence of bobbing machine in material road
Course of conveying among shake out material road.
As further improvement of the present utility model, rotation clamping is provided between the feeder and straight material road
Part, straight material road is articulated with the middle part of the rotary clamp, the eccentric end of the holder is hinged with the piston rod of a cylinder,
The cylinder is articulated with a fixed plate relative to the other end of piston rod.
By using above-mentioned technical proposal, by rotary clamp by the piece-holder on track undetermined and rotation
90 °, workpiece can be delivered in straight material road with the state of transverse direction, be made up of in whole mechanism three fulcrums, three fulcrums
One triangle, the pin joint position at middle part is constant, and then the piston rod of cylinder and the bottom of cylinder are be hinged setting, in gas
There is certain deformation quantity among the process that cylinder jacks up, the jack-up of cylinder piston rod is realized 90 ° of rotation of rotary clamp
Turn.
As further improvement of the present utility model, the feeder can be centrifugation feeder or vibration feeding
Machine.
Summary technical scheme, the utility model have the advantages that：
1st, holder is provided with, by part feeding in a lateral manner, is easy to the operation of next step.
2nd, the clamping of feeding manipulator and blanking mechanical hand, make clamp precision higher, enter more accurate in processing stations
Really.
3rd, straight material road and material road to be expected are separated, realize that single workpiece is placed among material road to be expected by ejecting pawl,
It is easy to the clamping of feeding manipulator.
Brief description of the drawings
Fig. 1 is the overall schematic of screw-rolling machine；
Fig. 2 is the independent schematic diagram of the processing stations of screw-rolling machine；
Fig. 3 is the schematic diagram of feeding device and feeding manipulator；
Fig. 4 is the independent schematic diagram of feeding device；
Fig. 5 is the schematic diagram that blanking mechanical hand coordinates with frame；
Fig. 6 is the schematic diagram that holder does not carry out rotating clamping；
Fig. 7 is that rod-like piece rotation is clamped 90 ° of schematic diagrames to straight material road by holder.
In figure, 1, screw-rolling machine body；11st, processing stations；111st, thread rolling shaft；12nd, frame；13rd, frame feed collet；2nd, feeding fills
Put；21st, straight material road；22nd, guide roller；23rd, limiting plate；24th, material road to be expected；25a, ejection pawl；25b, position-limited claw；251st, it is spacing
End face；252nd, circular arc end face；3rd, bobbing machine；31st, base；32nd, vibrating reed；33rd, connecting plate；4th, horizontal rail；41st, feeder
Tool hand；411st, clamping jaw；412nd, jaws；5th, blanking track；51st, blanking seat；52nd, holding piece；6a, gripper cylinder；6b, horizontal gas
Cylinder；6c, vertical cylinder；6d, piston rod；7th, holder；71st, neck；8th, workpiece.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Attached Fig. 1 and 2, a kind of screw-rolling machine, including screw-rolling machine body 1 are refer to, processing work is provided with screw-rolling machine body 1
Position 11, processing stations 11 are formed by a pair of thread rolling shafts 111, and thread rolling shaft 111 drives by motor shaft, between two thread rolling shafts 111
With the gap placed for workpiece 8, wherein a thread rolling shaft 111 can be done relative to the opposite/remote of another thread rolling shaft 111
Motion, to realize the change of the distance in gap that workpiece 8 places, be easy to the placement of workpiece 8, and close to the thread rolling shaft
111 front end is provided with the frame feed collet 13 for placing workpiece 8, frame feed collet 13 serve for enter soon thread rolling shaft 111 it
Between workpiece 8 serve spacing on position, avoid the sideslip of workpiece 8.
Accompanying drawing 4 is refer to, a frame 12 is equiped with the opening position being close to the phase of screw-rolling machine body 1, above frame 12
A feeding device 2 is placed with, feeding device 2 includes feed channel 21 always, and straight material road 21 is to be obliquely installed, straight material road 21
The height of initiating terminal is higher than the height of end, and initiating terminal is connected with feeder, and the width of straight material road 21 is equal to the length of workpiece 8
Degree, the workpiece 8 being placed in feeder are entered in straight material road 21 with the state of transverse direction, set in the raceway surface of straight material road 21
The more guide rollers 22 parallel with the long side of the bottom plate of straight material road 21 are equipped with, and limit is provided with the top of straight material road 21
Position plate 23, the vertical range of the raceway surface of the bottom surface of limiting plate 23 to the straight track of material road 21 are more than the diameter of workpiece 8, with
Realize that workpiece 8 can convey in straight material road 21, and limiting plate 23 can play it is effective must to workpiece 8 among transportation it is real
Limitation on existing height and position, avoids departing from from straight material road 21.
The straight machine that shakes is installed between frame 12 and straight material road 21, the machine that directly shakes includes the base being arranged in frame 12
31, vibrating reed 32 is vertically arranged with the both sides of base 31, a bobbing machine 3 is installed on one piece of vibrating reed 32 wherein,
The top of vibrating reed 32 is provided with the connecting plate 33 of one piece of transverse direction, and connecting plate 33 is used to be connected with the bottom of straight material road 21,
The effect that motor passes through vibrating reed 32 so that vibration trend is vibrated to be front and rear, and then vibration frequency is directly passed by vibrating reed 32
Pass, vibration frequency is high, and noise is small.
Set in the end of straight material road 21 and need material road 24, be provided between straight material road 21 and material road to be expected 24
One feeding gap, ejection pawl 25a is provided with feeding gap, ejection pawl 25a is driven by cylinder, and ejection pawl 25a includes limit
Position end face 251 and circular arc end face 252, three ejection pawl 25a are provided with feeding gap, wherein ejection pawl 25a positive stop end
Face 251 is towards straight material road 21, and ejection pawl 25a circular arc end face 252 is towards material road 24 to be expected.Set in the end of material road 24 to be expected
Position-limited claw 25b is equipped with, position-limited claw 25b is also equipped with three, is corresponded with ejection pawl 25a, position-limited claw 25b circular arc end face
252 direction material roads 24 to be expected.
Process after workpiece 8 enters straight material road 21 is, workpiece 8 is with the state that is close in straight material road 21
Place, now eject pawl 25a and be located at extreme lower position, a workpiece 8 is waited to expect as in the circular arc end face 252 for ejecting pawl 25a
The height of the initiating terminal of material road 24 realizes isolating for workpiece 8 and material road 24 to be expected higher than the height of the end of straight material road 21,
When expecting that the workpiece 8 in material road 24 is clamped to processing stations 11, ejection pawl 25a is ejected by vertical cylinder 6c, in circular arc end face
Under 252 drive, workpiece 8 is slided into material road 24 to be expected, as the end of material road 24 to be expected under position-limited claw 25b position-limiting action
End.
Refer to accompanying drawing 3, be equiped with a horizontal rail 4 in frame 12, the position on the vertical direction of horizontal rail 4 with
The end of material road 24 to be expected is corresponding, is slid in horizontal rail 4 and is provided with feeding manipulator 41, feeding manipulator 41 is by water
Flat cylinder 6b driving, feeding manipulator 41 are also equiped with vertical cylinder 6c, by horizontal air cylinder 6b and vertical cylinder 6c driving,
To realize the motion in the in the vertical direction of feeding manipulator 41 and horizontal direction, feeding manipulator 41, which includes two, can do phase
To the clamping jaw 411 of motion, the jaws 412 of triangle is provided with the opposed faces of clamping jaw 411, and then realizes the energy of jaws 412
It is adapted to the workpiece 8 of different size diameters.
The process that workpiece 8 is transported to processing stations 11 is：Feeding manipulator 41 is in the presence of horizontal air cylinder 6b first
The top for treating material road is transported to, is declined in the presence of vertical cylinder 6c, while clamping jaw 411 is opened in gripper cylinder 6a effects,
Workpiece 8 in station to adding material is clamped, conveyed in the presence of horizontal air cylinder 6b to the opening position of processing stations 11, when defeated
Deliver at processing stations 11, dropped in the presence of vertical cylinder 6c at frame feed collet 13, unclamp clamping jaw 411, workpiece 8 is placed
Thread rolling shaft 111 carries out the processing to workpiece 8 afterwards, and feeding manipulator 41 resets, and is ready for gripping next time.
Accompanying drawing 5 is refer to, a blanking track 5 is additionally provided with frame 12, blanking track 5 is located at material road 24 to be expected with adding
Between work station 11, there is a blanking seat 51 by horizontal air cylinder 6b drivings in blanking track 5, being provided with blanking seat 51 can be opposite
The holding piece 52 of motion, because workpiece 8 is usually that a headband has screw head, the diameter of screw head is more than the diameter of screw rod, clamping
Piece 52 is used to clamp the distance between screw rod and screw rod, and pulling back can both realize and pull out workpiece 8 from processing stations 11.
So among blanking process, blanking seat 51 is transported under the driving of blanking track 5 to the direction of processing stations 11 first
Dynamic, now the spacing between two pieces of holding pieces 52 is more than the maximum cross section width of workpiece 8, and then two pieces of holding pieces 52 are opposite
The clamping for workpiece 8, then the return motion by blanking seat 51 are realized in motion, workpiece 8 is taken out of in processing stations 11, with
Holding piece 52 is unclamped afterwards, realizes the blanking of workpiece 8.
Accompanying drawing 6 and 7 is refer to, further, one is provided between straight material road 21 and the delivery track of bobbing machine 3
Individual holder 7, wherein holder 7 are the plate of a block length cube, and holder 7 is close to straight material road 21 close to straight material road
Hold in fact, the middle part of holder 7 is hinged with straight material road 21, and the side of holder 7 is provided with neck 71, the shape of neck 71
Shape is adapted with the top of workpiece 8, and one piece of lower plate is vertically provided with straight material road 21, be provided with lower plate one vertically to
On cylinder, the bottom of cylinder and the bottom corner of lower plate be hinged, and the bottom of cylinder is hinged with an angle of holder 7, folder
The length of gripping member 7 is half of width of straight material road 21 or so, and the one of holder 7 is not provided with straight material road 21
End is provided with limiting plate 23, is placed in when workpiece 8 is arranged in order on track undetermined, and the workpiece 8 of forefront is entered inside neck 71,
The piston rod 6d of cylinder is jacked up therewith, is done holder 7 and is avoided workpiece with the be hinged rotary motion in middle part, the setting of limiting plate 23
8 fall, and after rotation is to 90 °, workpiece 8 is to be placed in the placement of transverse direction inside neck 71, and the position and straight material
It is adapted at the top of road 21, just realizes that workpiece 8 can feeding, and then carry out the operation of the next step in a lateral manner.
This specific embodiment is only that it is not to limitation of the present utility model, ability to explanation of the present utility model
Field technique personnel can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but
As long as all protected in right of the present utility model by Patent Law.
Claims (10)
1. a kind of screw-rolling machine, including screw-rolling machine body (1), a pair of thread rolling shaft (111) compositions are provided with screw-rolling machine body (1)
Processing stations (11), it is characterised in that the processing stations (11) place is being provided with feed channel (21) always, straight material
The initiating terminal in road (21) is used to connect feeder, is set in the end of straight material road (21) and needs material road (24), a feeding
The workpiece (8) being located in material road to be expected (24) is clamped and be delivered to processing stations (11) place and put down by manipulator (41) to be added
Work, is provided with a blanking mechanical hand between the material road (24) to be expected and processing stations (11), and the blanking mechanical hand will add
The complete workpiece of work (8) takes out from processing stations (11) and carries out blanking.
2. screw-rolling machine according to claim 1, it is characterised in that it is spacing that the initiating terminal of material road to be expected (24) is provided with one
Plate (23), the ejection pawl (25a) being vertically arranged between the material road (24) to be expected and straight material road (21), the ejection pawl
(25a) is driven by a cylinder and ejects the workpiece (8) being close on limiting plate (23) to be sent into material road to be expected (24).
3. screw-rolling machine according to claim 2, it is characterised in that the feeding manipulator (41) is also by a vertical cylinder
(6c) driving is provided with a horizontal rail (4), the feeding machinery with the lifting of in the vertical direction on the track to be expected
Hand (41) and vertical cylinder (6c) can be slid by a horizontal air cylinder (6b) driving in horizontal rail (4).
4. screw-rolling machine according to claim 3, it is characterised in that the feeding manipulator (41) is included by gripper cylinder
The clamping jaw (411) for doing move toward one another of (6a) driving, the jaws of triangle is provided with the opposed faces of clamping jaw (411)
(412)。
5. screw-rolling machine according to claim 4, it is characterised in that set in parallel beneath corresponding to the horizontal rail (4)
A blanking track (5) is equipped with, is slid in blanking track (5) and is provided with a blanking seat (51), the blanking seat (51) is by level
Cylinder (6b) drive, be provided with close processing stations (11) one end of blanking seat (51) two panels can move toward one another holding piece
(52)。
6. screw-rolling machine according to claim 5, it is characterised in that the straight material road (21) is along workpiece (8) blanking side
To setting diagonally downward, the bottom of straight material road (21) is provided with base (31), polylith vibration is provided with base (31)
Piece (32), a bobbing machine (3) are installed on one piece of vibrating reed (32), polylith vibrating reed (32) by a connecting plate (33) realize with
Straight material road (21) is connected.
7. screw-rolling machine according to claim 1, it is characterised in that the front end of the thread rolling shaft (111) is provided with use
In the frame feed collet (13) for placing workpiece (8).
8. screw-rolling machine according to claim 7, it is characterised in that be provided with least one above the straight material road (21)
Bar limiting plate (23), it is provided with and a plurality of guide roller (22) in the raceway surface of the straight material road (21).
9. screw-rolling machine according to claim 1, it is characterised in that be provided between the feeder and straight material road (21)
One rotary clamp (7), straight material road (21), the bias of the holder (7) are articulated with the middle part of the rotary clamp (7)
End is hinged with the piston rod (6d) of a cylinder, and the cylinder is articulated with a fixed plate relative to the other end of piston rod (6d).
10. screw-rolling machine according to claim 1, it is characterised in that the feeder can be centrifugation feeder or shake
Dynamic feeder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720129264.6U CN206662441U (en) | 2017-02-13 | 2017-02-13 | Screw-rolling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720129264.6U CN206662441U (en) | 2017-02-13 | 2017-02-13 | Screw-rolling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206662441U true CN206662441U (en) | 2017-11-24 |
Family
ID=60378179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720129264.6U Withdrawn - After Issue CN206662441U (en) | 2017-02-13 | 2017-02-13 | Screw-rolling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206662441U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108655515A (en) * | 2018-05-22 | 2018-10-16 | 芜湖明智自动化科技有限公司 | A kind of screw thread iron staff tapping machine |
| CN108723266A (en) * | 2018-06-29 | 2018-11-02 | 中民筑友有限公司 | A kind of processing of spiral and sleeve install equipment |
| CN106670597B (en) * | 2017-02-13 | 2018-12-21 | 宁波卓呈自动化装备有限公司 | Screw-rolling machine |
| CN109648382A (en) * | 2018-06-05 | 2019-04-19 | 佛山市名将自动化设备有限公司 | A kind of multi-robot of truss robot is integrated |
-
2017
- 2017-02-13 CN CN201720129264.6U patent/CN206662441U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670597B (en) * | 2017-02-13 | 2018-12-21 | 宁波卓呈自动化装备有限公司 | Screw-rolling machine |
| CN108655515A (en) * | 2018-05-22 | 2018-10-16 | 芜湖明智自动化科技有限公司 | A kind of screw thread iron staff tapping machine |
| CN108655515B (en) * | 2018-05-22 | 2020-08-18 | 台州蓝鲸清洗机械股份有限公司 | Threaded iron bar tapping machine |
| CN109648382A (en) * | 2018-06-05 | 2019-04-19 | 佛山市名将自动化设备有限公司 | A kind of multi-robot of truss robot is integrated |
| CN108723266A (en) * | 2018-06-29 | 2018-11-02 | 中民筑友有限公司 | A kind of processing of spiral and sleeve install equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171124 Effective date of abandoning: 20181221 |
|
| AV01 | Patent right actively abandoned |