CN104741863B - Swelling device - Google Patents
Swelling device Download PDFInfo
- Publication number
- CN104741863B CN104741863B CN201310747239.0A CN201310747239A CN104741863B CN 104741863 B CN104741863 B CN 104741863B CN 201310747239 A CN201310747239 A CN 201310747239A CN 104741863 B CN104741863 B CN 104741863B
- Authority
- CN
- China
- Prior art keywords
- ringfeder
- pull bar
- pulley
- rotary shaft
- take
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0531—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor internal pipe alignment clamps
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Clamps And Clips (AREA)
Abstract
A kind of swelling device, including: support member (1) and control device；Described support member (1) includes multiple ringfeder (11), the cushion rubber (12) being folded between adjacent ringfeder (11) and ringfeder seat (13) being fixed on rearmost ringfeder (11) front and back connected；Controlling device and include tensioning mechanism, this tensioning mechanism includes pull bar (21) and acts on the tension power set (22) of pull bar (21) rear end；In the anterior inner chamber inserting the plurality of ringfeder (11) of pull bar (21), its ringfeder (11) being fixedly arranged at the front end with a top cover (23) and forefront offsets；Ringfeder (11) applying extruding force is made the cushion rubber (12) between adjacent ringfeder (11) be squeezed power by pull bar (21) the most simultaneously and deforms upon by tension power set (22).Cushion rubber (12) deforms upon and makes external diameter become big thus that realization is to described tubing workpiece inner wall support.The swelling device of the present invention will not disfiguring workpiece inwall workpiece deflection can be made the least, moreover it is possible to rotates while tensioner, and realizes resistance welding function, substantially increases the efficiency of welding.
Description
Technical field
The present invention relates to the positioner of a kind of industrial use, particularly relate to a kind of swelling device for being positioned by tubing workpiece, it is adaptable to location to tubing workpiece in welder.
Background technology
In prior art, for position the swelling device of tubing workpiece be typically with metalwork support the inwall in tubing workpiece thus reach location purpose, but the direct action by contact of this metalwork easily damages the inwall of tubing workpiece in the mode of tubing workpiece inner wall, it could even be possible to cause the deformation of tubing workpiece.Additionally, existing swelling device only has single tensioner positioning function, can not rotate, when being applied to welder, if needing when multiple joint is welded in the position of the different angles of tubing workpiece, also need to make swelling device reset, readjust the angle of tubing workpiece, the most again carry out tensioner location, use cumbersome, efficiency is low, time-consuming.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of swelling device being avoided that when tensioner positions, the metalwork of swelling device contacts with tubing workpiece inner wall.
Another technical problem that the invention solves the problems that is to provide a kind of swelling device with tensioner and spinfunction.
The present invention solves above-mentioned technical problem and employed technical scheme comprise that, manufactures and designs a kind of swelling device, including: for supporting the support member of tubing workpiece inner wall and controlling device.
Described support member includes multiple ringfeder, cushion rubber being folded between two adjacent ringfeders being front and back slidably connected successively and fixes the ringfeder seat being connected with rearmost end ringfeder；Described control device includes tensioning mechanism, and this tensioning mechanism includes pull bar and the tension power set being connected with described back end of tie rod；Described pull bar inserts the axis hole of the plurality of ringfeder, and the top cover that a restriction forefront ringfeder is displaced outwardly is fixed in its front end.
Described tension power set apply axial compression power by described pull bar to ringfeder and the cushion rubber between adjacent two ringfeders are extruded, and the described cushion rubber being extruded deforms upon and makes external diameter become big thus that realization is to described tubing workpiece inner wall support.
Described control device also includes rotating mechanism, and this rotating mechanism includes rotary shaft and acts on the rotary power unit at this rotary shaft rear portion, and described rotary shaft is anterior and described support member is connected.
Described tensioning mechanism also includes: be socketed on that described rotary shaft is outer and lateral surface is provided with the take-up pulley of annular groove, can be socketed on the pushing clamping sleeve outside this take-up pulley with the relative rotation and be fixed on described pushing clamping sleeve and inner side is positioned at the driving member of described annular groove；The power of described tension power set produces axle and is connected with described pushing clamping sleeve；Described power produces axle and pulls described pushing clamping sleeve, and this pushing clamping sleeve pulls described take-up pulley by described driving member.
Described pull bar rear portion offers the first through hole, and described take-up pulley offers the second through hole, and described rotary shaft offers axially extended elongated hole；Described rotary shaft inner chamber is inserted at described pull bar rear portion, and described pull bar, take-up pulley and rotary shaft are linked together by a latch through described first through hole, the second through hole and elongated hole.
Described rotary shaft both sides are provided with axially extended convex key, described take-up pulley inwall corresponding position is provided with two axial notches, and the described convex key of rotary shaft both sides makes in being respectively embedded into two axial notches of take-up pulley can only move axially relatively between described take-up pulley and rotary shaft but can not relatively rotate.
Described driving member includes that dead axle and bearing, described dead axle are fixed on described pushing clamping sleeve, described bearing be positioned at the annular groove outside described take-up pulley and with this dead axle grafting.
Described pushing clamping sleeve is provided with polygonal lateral wall, is fitted with two Anti-rotary blocks fixed outside the two of which face of this polygonal outer sidewall.
The anterior external diameter of described ringfeder is less, rear portion external diameter is bigger, joint, front and rear part forms one and vertically becomes at rank, the front portion of rear ringfeder is plugged in the inner chamber of front ringfeder, described cushion rubber be socketed on rear ringfeder front portion and be folded in front ringfeder rear end face vertical with rear ringfeder change rank between.
The ringfeder that the top cover of described pull bar front end is socketed on forefront is anterior, and the change vertical with this ringfeder of this top cover is gripped with described cushion rubber between rank.
The most relatively, the swelling device of the present invention utilizes tensioning mechanism extruded sleeve cushion rubber on support member to be allowed to deform external diameter change and greatly thus is pressed on the inwall of tubing workpiece, reach to position the purpose of workpiece, the contact internal walls of metalwork and workpiece can be avoided, will not disfiguring workpiece inwall, and the deformation of tubing workpiece can be reduced to greatest extent；It addition, the swelling device of the present invention has tensioner and spinfunction concurrently, after the workpiece of tensioner location, energy rotary support member, the convenient Difference angles at tubing workpiece welds another joint, substantially increases the efficiency of welding.
Accompanying drawing explanation
Fig. 1 is the structural representation of swelling device of the present invention；
Fig. 2 is the exploded view of swelling device of the present invention；
Fig. 3 is described take-up pulley 24 and the structural representation of pushing clamping sleeve 25；
Fig. 4 is described ringfeder 11 structural representation.
Detailed description of the invention
It is described in further detail below in conjunction with the most preferred embodiment shown in accompanying drawing.
As depicted in figs. 1 and 2, the swelling device of the present invention mainly includes being socketed in outer support member 1 for tubing workpiece and controlling device, and described control device includes tensioning mechanism and rotating mechanism.It is illustrated individually below.
Described support member 1 is generally cylindrical, including the ringfeder 11 connected before and after multiple, the cushion rubber 12 being folded between adjacent ringfeder 11 and the ringfeder seat 13 being fixed on rearmost ringfeder 11.As shown in Figure 4, the anterior external diameter of described ringfeder 11 is less, and rear portion external diameter is relatively big, and joint, front and rear part forms one and vertically becomes at rank 113.During assembling, the front portion of rear ringfeder 11 is plugged in the inner chamber of front ringfeder 11, and described cushion rubber 12 is socketed on the less front portion of rear ringfeder 11 external diameter and the rear end face being folded in front ringfeder 11 and rear ringfeder 11 vertical and becomes at rank between 113.
As depicted in figs. 1 and 2, rotating mechanism includes rotary shaft 31 and acts on the rotary power unit 32 at this rotary shaft 31 rear portion, rotary power unit 32 can be rotated axle 31 and rotate, the front and rear of this rotary shaft 31 is respectively by bearing 51 and bearing 52 support, two convex keys 312 axially extended it are relatively fixed on the middle part sidewall of rotary shaft 31, additionally, be further opened with an elongated hole axially extended 311.
Described tensioning mechanism includes pull bar 21, tension power set 22, is fixed in the top cover 23 of pull bar 21 front end, take-up pulley 24, pushing clamping sleeve 25, driving member 26, pushes away seat 27 and latch 28.
Wherein, in the anterior inner chamber inserting the plurality of ringfeder 11 of described pull bar 21, the ringfeder 11 that the affixed top cover 23 in its front end is socketed on forefront is anterior, it is gripped with cushion rubber 12 between 113 at this top cover 23 rear end face change vertical with forefront ringfeder 11 rank, pull bar 21 rear portion is then inserted in the forward lumen of described rotary shaft 31, and this pull bar 21 rearward end offers the first through hole 211 being perpendicular to its axis.
As shown in Figure 3, described take-up pulley 24 is socketed on outside the rotary shaft 31 between two bearings 51 and 52, this take-up pulley 24 lateral surface is provided with a ring annular groove 241, and on its sidewall, offer the second through hole 242 being perpendicular to its axis, additionally, this take-up pulley 24 inwall is respectively provided on two sides with the described convex key 312 of two axial notches 243 confession rotary shaft 31 both sides being parallel to axis direction and is respectively embedded into, so that can only move axially relatively between described take-up pulley 24 and rotary shaft 31 but can not relatively rotate.
Described pushing clamping sleeve 25 is socketed on outside take-up pulley 24, and its lateral wall is a polygon wall, and the wall that two of which is relative offers the third through-hole 251 being perpendicular to its axis, and remaining wall offers fourth hole 252 and multiple screw 253.It addition, be fitted with two Anti-rotary blocks 4 fixed outside the two of which face of the polygonal outer sidewall of described pushing clamping sleeve 25, thus can prevent pushing clamping sleeve 25 from rotating about the axis thereof.
Described driving member 26 is provided with multiple and is respectively arranged on multiple walls of pushing clamping sleeve 25, this driving member 26 includes dead axle 261 and bearing 262, wherein dead axle 261 the inner is provided with protruding shaft, in this protruding shaft fourth hole 252 from pushing clamping sleeve 25 wall insert pushing clamping sleeve 25 inner chamber and with bearing 262 grafting, and described bearing 262 is positioned at the annular groove 241 outside described take-up pulley 24, dead axle 261 outer end is fixed on pushing clamping sleeve 25 by screw by the screw 253 on pushing clamping sleeve 25 wall.The setting of this driving member 26 makes to rotate against around axis between pushing clamping sleeve 25 and take-up pulley 24, but can not relative movement in the axial direction.
Described pull bar 21, take-up pulley 24 and rotary shaft 31 are linked together by described latch 28 through the first through hole 211, the second through hole 242 on take-up pulley 24 and the elongated hole 311 in rotary shaft 31 on pull bar 21, and are stuck in the jump-ring slot at these latch 28 two ends with jump ring 281.
As in figure 2 it is shown, described tension power set 22 are provided with two and lay respectively at the both sides of rotary shaft 31, its power produces axle 221 and is connected with oscillating bearing 222.Described seat 27 outer end that pushes away is convexly equipped with protruding shaft 271 and is plugged in described oscillating bearing 222, pushes away seat 27 the inner and is then provided with projection 272, and this projection 272 is plugged in the third through-hole 251 on described pushing clamping sleeve 25.The power of described tension power set 22 produces axle 221 and by oscillating bearing 222 and pushes away seat 27 and pull described pushing clamping sleeve 25 to be moved forward or rearward, and this pushing clamping sleeve 25 then pulls described take-up pulley 24 to be moved forward or rearward accordingly by the multiple driving members 26 being fixed thereon.In the present embodiment, described tension power set 22 can use air cylinder structure.
The power of described tension power set 22 produce axle 221 by oscillating bearing 222 and push away seat 27 pull described pushing clamping sleeve 25 to be moved rearwards by time, the multiple driving members 26 being fixed on pushing clamping sleeve 25 pull described take-up pulley 24 to be moved rearwards by accordingly, because pull bar 21 is linked together with take-up pulley 24 by latch 28, this will pull pull bar 21 to be moved rearwards by, described pull bar 21 applies extruding force by top cover 23 and the distance between adjacent ringfeder 11 is diminished thus extrudes described cushion rubber 12 multiple ringfeders 11, described cushion rubber 12 deforms upon and makes external diameter change greatly thus be in close contact with tubing workpiece inner wall, thus can realize the positioning function to tubing workpiece.And when needs rotate tubing workpiece, rotary power unit 32 drives pull bar 21, support member 1 and take-up pulley 24 to rotate by rotary shaft 31 simultaneously, thus tubing workpiece synchronous axial system can be driven.Now, can not rotate because pushing clamping sleeve 25 is limited by Anti-rotary block 4, and can rotate against between pushing clamping sleeve 25 and take-up pulley 24, therefore the rotary motion of take-up pulley 24 does not interferes with pushing clamping sleeve 25.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (7)
1. a swelling device, including: for supporting the support member (1) of tubing workpiece inner wall and controlling device；It is characterized in that:
Described support member (1) includes multiple ringfeder (11), the cushion rubber (12) being folded between two adjacent ringfeders (11) and ringfeder seat (13) of being connected fixing with rearmost end ringfeder (11) being front and back slidably connected successively；Described control device includes tensioning mechanism and rotating mechanism, and this rotating mechanism includes rotary shaft (31) and acts on the rotary power unit (32) at this rotary shaft (31) rear portion, and described rotary shaft (31) is anterior and described support member (1) is connected；This tensioning mechanism includes: tension power set (22) that pull bar (21) is connected with described pull bar (21) rear end, outward and lateral surface is provided with the take-up pulley (24) of annular groove (241), can be socketed on the outer pushing clamping sleeve (25) of this take-up pulley (24) with the relative rotation and be fixed on described pushing clamping sleeve (25) and inner side is positioned at the driving member (26) of described annular groove (241) to be socketed on described rotary shaft (31)；The power of described tension power set (22) produces axle (221) and is connected with described pushing clamping sleeve (25)；Described power produces axle (221) and pulls described pushing clamping sleeve (25), and this pushing clamping sleeve (25) pulls described take-up pulley (24) by described driving member (26)；Described pull bar (21) inserts the axis hole of the plurality of ringfeder (11), and the top cover (23) that restriction forefront ringfeder (11) is displaced outwardly is fixed in its front end；
Described tension power set (22) apply axial compression power by described pull bar (21) to ringfeder (11) and the cushion rubber (12) between adjacent two ringfeders (11) are extruded, and the described cushion rubber (12) being extruded deforms upon and makes external diameter become big thus that realization is to described tubing workpiece inner wall support.
Swelling device the most according to claim 1, it is characterized in that: described pull bar (21) rear portion offers the first through hole (211), offer the second through hole (242) on described take-up pulley (24), described rotary shaft (31) offers axially extended elongated hole (311)；Described rotary shaft (31) inner chamber is inserted at described pull bar (21) rear portion, and described pull bar (21), take-up pulley (24) and rotary shaft (31) are linked together by a latch (28) through described first through hole (211), the second through hole (242) and elongated hole (311).
Swelling device the most according to claim 1, it is characterized in that: described rotary shaft (31) both sides are provided with axially extended convex key (312), described take-up pulley (24) inwall corresponding position is provided with two axial notches (243), and the described convex key (312) of rotary shaft (31) both sides makes in being respectively embedded into two axial notches (243) of take-up pulley (24) can only move axially relatively between described take-up pulley (24) and rotary shaft (31) but can not relatively rotate.
Swelling device the most according to claim 1, it is characterized in that: described driving member (26) includes dead axle (261) and bearing (262), described dead axle (261) is fixed on described pushing clamping sleeve (25), described bearing (262) be positioned at described take-up pulley (24) outside annular groove (241) and with this dead axle (261) grafting.
Swelling device the most according to claim 1, it is characterised in that: described pushing clamping sleeve (25) is provided with polygonal lateral wall, is fitted with two Anti-rotary blocks (4) fixed outside the two of which face of this polygonal outer sidewall.
6. according to the swelling device described in any one of claim 1 to 5, it is characterized in that: the anterior external diameter of described ringfeder (11) is less, rear portion external diameter is bigger, joint, front and rear part forms one and vertically becomes at rank (113), the front portion of rear ringfeder (11) is plugged in the inner chamber of front ringfeder (11), and described cushion rubber (12) is socketed on the front portion of rear ringfeder (11) and is folded at front ringfeder (11) rear end face change vertical with rear ringfeder (11) rank between (113).
Swelling device the most according to claim 5, it is characterized in that: the ringfeder (11) that the top cover (23) of described pull bar (21) front end is socketed on forefront is anterior, at this top cover (23) change vertical with this ringfeder (11) rank, between (113), be gripped with described cushion rubber (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310747239.0A CN104741863B (en) | 2013-12-31 | 2013-12-31 | Swelling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310747239.0A CN104741863B (en) | 2013-12-31 | 2013-12-31 | Swelling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104741863A CN104741863A (en) | 2015-07-01 |
| CN104741863B true CN104741863B (en) | 2016-08-17 |
Family
ID=53582424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310747239.0A Active CN104741863B (en) | 2013-12-31 | 2013-12-31 | Swelling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104741863B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052769B (en) * | 2016-12-27 | 2023-08-22 | 宣城市建林机械有限公司 | Locking device of rotating assembly |
| CN109555856B (en) * | 2019-01-15 | 2023-08-18 | 苏州天准科技股份有限公司 | Small hole sealing device |
| CN111003652B (en) * | 2019-12-14 | 2021-04-06 | 成都建工第二建筑工程有限公司 | Civil engineering pipe fitting device of taking |
| CN113510432A (en) * | 2021-04-16 | 2021-10-19 | 睿信泰智能科技(昆山)有限公司 | Combined assembly core expansion tool |
| CN114166049A (en) * | 2021-12-08 | 2022-03-11 | 黑龙江建筑职业技术学院 | Energy-saving heat pipe device of gas heating stove |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039530A (en) * | 2010-06-08 | 2011-05-04 | 昆山新莱洁净应用材料股份有限公司 | Automatic internally supporting and fixing device |
| CN102059561A (en) * | 2010-11-19 | 2011-05-18 | 河南省中原内配股份有限公司 | Clamp for quickly changing inner support of cylinder jacket |
| CN202278206U (en) * | 2011-09-30 | 2012-06-20 | 中国石化集团第四建设公司 | Large-caliber thick walled tube type grooved lathe processing clamping fixture |
| CN102513838A (en) * | 2011-12-08 | 2012-06-27 | 河南省中原内配股份有限公司 | High-precision labyrinth special fixture for cylinder casing processing |
| CN103418979A (en) * | 2013-08-09 | 2013-12-04 | 青岛东方铁塔股份有限公司 | Steel tube pneumatic clamping locating indexing device |
| CN203726072U (en) * | 2013-12-31 | 2014-07-23 | 深圳市鹏煜威科技有限公司 | Tensioning device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101003237B1 (en) * | 2005-06-17 | 2010-12-22 | 현대중공업 주식회사 | The device to increase of motion accuracy toward welding direction for pipe orbital welding carriage |
| US7954689B2 (en) * | 2007-05-04 | 2011-06-07 | Asm Technology Singapore Pte Ltd | Vacuum wire tensioner for wire bonder |
-
2013
- 2013-12-31 CN CN201310747239.0A patent/CN104741863B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102039530A (en) * | 2010-06-08 | 2011-05-04 | 昆山新莱洁净应用材料股份有限公司 | Automatic internally supporting and fixing device |
| CN102059561A (en) * | 2010-11-19 | 2011-05-18 | 河南省中原内配股份有限公司 | Clamp for quickly changing inner support of cylinder jacket |
| CN202278206U (en) * | 2011-09-30 | 2012-06-20 | 中国石化集团第四建设公司 | Large-caliber thick walled tube type grooved lathe processing clamping fixture |
| CN102513838A (en) * | 2011-12-08 | 2012-06-27 | 河南省中原内配股份有限公司 | High-precision labyrinth special fixture for cylinder casing processing |
| CN103418979A (en) * | 2013-08-09 | 2013-12-04 | 青岛东方铁塔股份有限公司 | Steel tube pneumatic clamping locating indexing device |
| CN203726072U (en) * | 2013-12-31 | 2014-07-23 | 深圳市鹏煜威科技有限公司 | Tensioning device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104741863A (en) | 2015-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104741863B (en) | Swelling device | |
| CN101675256B (en) | Connection means and method for connecting a first component and second component | |
| TWI403344B (en) | Manual resistance control device for sports equipment | |
| CN107017517A (en) | Smoothly power equipment is powered docking device for one kind operation | |
| CN203726072U (en) | Tensioning device | |
| JP4917612B2 (en) | Device for setting fixed elements | |
| CN203051659U (en) | Linear actuator and rocker arm driving mechanism thereof | |
| CN211053055U (en) | Handle torsional spring assembly fixture | |
| CN211331532U (en) | Plastic pipeline internal diameter planing machine | |
| US9505112B1 (en) | Pin puller | |
| US20150198351A1 (en) | Multi-shaft bending machine for bending rectangular duct body | |
| WO2020032130A1 (en) | Motorized position adjustment device for steering wheel | |
| CN108946031B (en) | Mould platform drive arrangement and stacker | |
| JP2012139662A (en) | Bolt supporting device serving for coating locking agent for bolt | |
| JP5778051B2 (en) | Pipe making equipment | |
| US20170107684A1 (en) | A coupler for a wheel loader | |
| KR100988998B1 (en) | Clutch Structure of Sewing Machine | |
| JP3161625U (en) | Nailing machine | |
| JP2007024185A (en) | Actuator, parallel link mechanism using the same, and long-sized material bending device | |
| CN207465074U (en) | A kind of assembling jig of height adjuster friction reed | |
| JP6265038B2 (en) | Fastening socket and socket switching method | |
| CN216541569U (en) | Processing tool for inner support of engine cylinder | |
| TWI597133B (en) | Tool magnetic slip device | |
| CN209902170U (en) | Full-automatic roll forging machine mould fixed establishment | |
| CN217355635U (en) | High-pressure ball valve matching device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |