CN116586947A - Piston assembly device for manufacturing slurry pump - Google Patents
Piston assembly device for manufacturing slurry pump Download PDFInfo
- Publication number
- CN116586947A CN116586947A CN202310337553.5A CN202310337553A CN116586947A CN 116586947 A CN116586947 A CN 116586947A CN 202310337553 A CN202310337553 A CN 202310337553A CN 116586947 A CN116586947 A CN 116586947A
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- piston
- base
- cylinder sleeve
- piston assembly
- 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.)
- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000002002 slurry Substances 0.000 title abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 49
- 238000003825 pressing Methods 0.000 claims description 11
- 210000000078 claw Anatomy 0.000 claims description 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
Abstract
The invention relates to the technical field of slurry pump equipment, and discloses a piston assembly device for manufacturing a slurry pump. When the piston is used for assembling the slurry pump, a worker firstly reversely buckles the piston on the fixing mechanism, the limiting block is enabled to outwards move to prop against the inner wall of the piston through downwards extruding the spring, the piston is fixed, then the telescopic rod is started to upwards move, the cylinder sleeve is placed in the center of the chuck mechanism, the screw rod of the chuck mechanism automatically rotates, the sliding block can be enabled to move and tighten along the sliding groove of the chuck cover until the clamping jaw fixes the cylinder sleeve main body, the axis of the cylinder sleeve can be fixed and coincides with the axis of the piston below when the cylinder sleeve is fixed, the upper hydraulic press is started after the cylinder sleeve is fixed, the hydraulic press cylinder generates vertical downward force on the cylinder sleeve until the cylinder sleeve contacts the buffer gasket, the piston is pushed into the cylinder sleeve, and the assembly is completed. The device is favorable for accurately assembling the piston, can be disassembled, is suitable for cylinder sleeves and pistons with various diameters and lengths, and has wide application range.
Description
Technical Field
The invention relates to the technical field of slurry pump equipment, in particular to a piston assembly device for manufacturing a slurry pump.
Background
The utility model provides a slurry pump, refers to the machinery that carries flushing liquid such as mud or water in the drilling process, and the slurry pump of using in general is piston or column type, and the bent axle of pump is rotated by the driving machine, and the bent axle passes through the cross head and drives piston or plunger again and do reciprocating motion in the pump cylinder, under the alternating effect of suction and discharge valve, realizes the purpose of pressure delivery and circulation flushing liquid.
In the operation process of manually assembling the piston, an operator can only assemble the piston in the cylinder sleeve by means of a skilled assembling experience, the piston is easy to be blocked in the cylinder sleeve due to inclination of the piston, the assembly process is delayed, the manual assembly cannot ensure that the piston to be assembled and the cylinder sleeve are positioned on the same central axis, and the piston assembly of the cylinder sleeves with different diameters and different lengths is inconvenient, so that the piston assembly device for manufacturing the slurry pump is provided for the problems.
Disclosure of Invention
The present invention aims to provide a piston assembly device for mud pump manufacture to solve the above-mentioned problems set forth in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: a device for manufacturing a slurry pump or assembling an asenap.
Preferably, the both sides of the upper surface of bottom plate are all fixedly connected with U type support frame, the upper surface axis department fixedly connected with supporting seat of bottom plate, the top outer wall fixedly connected with a plurality of stand of supporting seat, a plurality of the stand is kept away from the one end fixedly connected with upper beam plate of supporting seat, a plurality of be provided with the movable plate on the stand, the movable plate slides and sets up on the surface of a plurality of stand, the lower surface center department fixedly connected with cylinder of movable plate, the fixedly connected with hydraulic press on the surface of upper beam plate, the upper surface axis department fixedly connected with fixed establishment of bottom plate, the top of fixed establishment runs through the surface of supporting seat and extends to the outside, two respectively sliding connection have the carriage on the U type support frame, fixedly connected with chuck mechanism on the inboard surface of carriage, chuck mechanism and fixed establishment's axis coincidence.
Preferably, the U-shaped support frame is fixedly connected to the upper surface of the first driving base, the first driving base is fixedly connected to two sides of the upper surface of the bottom plate, a first telescopic rod is fixedly connected to a center shaft of the upper surface of the first driving base, and a sliding frame is fixedly connected to the top of the first telescopic rod
Preferably, the supporting seat is fixedly connected to the upper surface of the bottom plate and is located between the two U-shaped supporting frames, the upper surface of the supporting seat is fixedly connected with a buffer gasket, and the inner diameter of the buffer gasket is the same as the inner diameter of the top end of the fixing mechanism.
Preferably, the fixing mechanism comprises a second driving base, a second telescopic rod is fixedly connected to the center of the upper surface of the second driving base, a circular mounting groove is formed in the top end of the second telescopic rod, and a base is fixedly connected to the lower surface inside the circular mounting groove
Preferably, an upper pressing plate is arranged right above the base, the upper pressing plate is connected with the base through a spring, a plurality of supporting rods and limiting blocks are uniformly distributed on the periphery of the spring, the limiting blocks are respectively connected with the base and the upper pressing plate through rotation through two supporting rods, and an outwards protruding included angle is formed by the two supporting rods connected with the same limiting block.
Preferably, the chuck mechanism comprises a base, a gear plate is rotatably arranged on the base, a screw is rotatably arranged between the base and the gear plate, the screw is meshed with the lower surface of the gear plate and the upper surface of the base, and the screw is mutually matched with the gear plate.
Preferably, the upper surface of gear disc has seted up annular tooth, gear disc upper surface sliding connection has a plurality of slider, the lower surface fixedly connected with of slider with annular tooth complex tooth, a plurality of chuck lid has been cup jointed in the outside of slider, the spout has been seted up at the top of chuck lid, the inboard of slider is vertically seted up the recess, and the inside rotation of recess has connect the jack catch
Preferably, the two sides of the base are respectively and fixedly connected with a fixing frame, and the fixing frames are fixedly connected to the inner side surfaces of the sliding frames.
Compared with the prior art, the invention has the beneficial effects that:
(1) When the cylinder sleeves with different diameters and different lengths are required to be assembled, the screw rod of the chuck mechanism automatically rotates and drives the gear disc to rotate, so that the sliding block can move back and forth along the sliding groove of the chuck cover to realize loosening and tightening of the clamping jaw, the chuck is suitable for the cylinder sleeves with different diameters, the chuck can move up and down through the control of the telescopic rod, the chuck is suitable for the cylinder sleeves with different lengths, and the effect of assembling the cylinder sleeves with different lengths and different diameters can be achieved compared with the prior art, so that the chuck is wider in application range.
(2) When the pistons with different diameters are reversely buckled on the upper pressing plate at the top end of the fixing mechanism, the limiting block is made of rubber by downwards extruding the spring to outwards move to prop against the inner wall of the piston, the friction force is large, and the pistons are fixed by the friction force between the limiting block and the pistons, so that the piston type and the piston type fixing mechanism can be suitable for pistons with various types and sizes, is wide in application range and reduces cost.
(3) When the cylinder sleeve and the piston are required to be disassembled, the cylinder sleeve can be fixed at the center of the chuck, the chuck is kept to be clamped by the telescopic rod to keep the cylinder sleeve still, the telescopic rod of the fixing mechanism is started to be lifted upwards until the piston is pushed out of the cylinder sleeve, and compared with the prior art, the device can disassemble the assembled cylinder sleeve and piston, and has more comprehensive functions.
(4) The chuck mechanism is always horizontally placed, the axis of the cylinder sleeve can be automatically adjusted while the chuck mechanism is tightened and fixed, the axis is kept vertical, the axis and the axis of the piston can be kept on the same central line, the accurate assembly of the piston and the cylinder sleeve can be realized, and the delay of the assembly process caused by the inclined clamping of the piston in the cylinder sleeve is avoided.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a bottom view of the overall structure of the present invention;
FIG. 3 is a schematic view of the overall structure of the chuck mechanism of the present invention;
FIG. 4 is a partially expanded view of the chuck mechanism of the present invention;
FIG. 5 is a schematic view of the mounting structure of the fixing mechanism of the present invention;
FIG. 6 is an enlarged view of FIG. 5A in accordance with the present invention;
FIG. 7 is a bottom view of the securing mechanism of the present invention;
in the figure: 1. a bottom plate; 2. a U-shaped supporting frame; 201. a first telescopic rod; 202. a carriage; 203. a first drive housing; 3. a column; 4. an upper beam plate; 5. a hydraulic press; 501. a cylinder; 502. a moving plate; 6. a chuck mechanism; 601. a claw; 602. a screw; 603. a chuck cover; 604. a slide block; 605. a gear plate; 606. a fixing frame; 607. a base; 7. a support base; 701. a buffer gasket; 8. a fixing mechanism; 801. an upper press plate; 802. a support rod; 803. a limiting block; 804. a base; 805. a second telescopic rod; 806. and the second driving base.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 7, the present invention provides a technical solution: a piston assembly apparatus for use in the manufacture of a mud pump.
The device comprises a bottom plate 1, wherein both sides of the upper surface of the bottom plate 1 are fixedly connected with a U-shaped supporting frame 2, and a supporting seat 7 is fixedly connected with a center shaft of the upper surface of the bottom plate 1;
the upper surface of the supporting seat 7 is fixedly connected with a plurality of upright posts 3, one end of the plurality of upright posts 3, which is far away from the supporting seat 7, is fixedly connected with an upper beam plate 4, a movable plate 502 is arranged on the plurality of upright posts 3, the movable plate 502 is arranged on the outer walls of the plurality of upright posts 3 in a sliding manner, the center of the lower surface of the movable plate 502 is fixedly connected with a cylinder 501, and the upper surface of the upper beam plate 4 is fixedly connected with a hydraulic machine 5;
the bottom plate 1 is fixedly connected with a fixing mechanism 8 at the middle shaft of the outer wall of the top, and the top end of the fixing mechanism 8 penetrates through the outer surface of the supporting seat 7 and extends to the outer side;
the two U-shaped support frames 2 are respectively and slidably connected with a sliding frame 202, the inner side surface of the sliding frame 202 is fixedly connected with a chuck mechanism 6, and the chuck mechanism 6 is always horizontally placed;
the axes of the chuck mechanism 6 and the fixing mechanism 8 are coincident, and the purpose of the arrangement is to accurately push the piston into the cylinder sleeve;
the U-shaped support frame 2 is fixedly connected to the upper surface of the first driving base 203, the first driving base 203 is fixedly connected to two sides of the upper surface of the bottom plate 1, a first telescopic rod 201 is fixedly connected to a middle shaft of the upper surface of the first driving base 203, a sliding frame 202 is fixedly connected to the top of the first telescopic rod 201, the purpose of the arrangement is to control the installation depth of a piston in a cylinder sleeve, the movable range of the sliding frame 202 is determined by the first telescopic rod 201, the height of the sliding frame is not higher than that of a cylinder 501, and the height of the sliding frame is not lower than that of a buffer gasket 701;
the supporting seat 7 is fixedly connected to the upper surface of the bottom plate 1 and is positioned between the two U-shaped supporting frames 2, a buffer gasket 701 is fixedly connected to the center of the upper surface of the supporting seat 7, the buffer gasket 701 is made of rubber and the like, the inner diameter of the buffer gasket 701 is the same as the inner diameter of the top end of the fixing mechanism 8, the outer diameter of the buffer gasket 701 is always larger than the outer diameter of the cylinder sleeve, and the purpose of the arrangement is to buffer impact caused by the falling of the cylinder sleeve and avoid deformation of the cylinder sleeve;
the fixing mechanism 8 comprises a second driving base 806, a second telescopic rod 805 is fixedly connected to the center of the upper surface of the second driving base 806, a circular mounting groove is formed in the top end of the second telescopic rod 805, a base 804 is fixedly connected to the lower surface inside the circular mounting groove, the diameter of the second telescopic rod 805 is always smaller than the inner diameter of the piston, and the purpose of the arrangement is to facilitate the second telescopic rod 805 to be telescopic and drive pistons of different types to be assembled into a cylinder sleeve;
an upper pressing plate 801 is arranged right above the base 804, the upper pressing plate 801 is connected with the base 804 through a spring, a plurality of supporting rods 802 and limiting blocks 803 are uniformly distributed on the periphery of the spring, the limiting blocks 803 are respectively connected with the base 804 and the upper pressing plate 801 through two supporting rods 802 in a rotating way, and an outwards protruding included angle is formed by the two supporting rods 802 connected with the same limiting block 803, so that the purpose of the arrangement is to support the piston outwards from the inner diameter, the purpose of fixing is achieved, the piston and a cylinder sleeve can be kept at the same axis, and accurate assembly is easy;
the chuck mechanism 6 comprises a base 607, a gear plate 605 is rotatably arranged on the base 607, a screw 602 is rotatably arranged between the base 607 and the gear plate 605, the screw 602 is meshed with the lower surface of the gear plate 605 and the upper surface of the base 607, and the screw 602 is matched with the gear plate 605;
the upper surface of the gear plate 605 is provided with annular teeth, the upper surface of the gear plate 605 is connected with a plurality of sliding blocks 604 in a sliding manner, the lower surface of each sliding block 604 is fixedly connected with teeth matched with the annular teeth, the outer sides of the plurality of sliding blocks 604 are sleeved with chuck covers 603, the tops of the chuck covers 603 are provided with sliding grooves, the inner sides of the sliding blocks 604 are vertically provided with grooves, claws 601 are rotatably connected in the grooves, the purpose of the arrangement is to fix cylinder sleeves of different types and different lengths and keep the axes of the cylinder sleeves stable, the movable range of a chuck mechanism 6 is between a buffer washer 701 and a cylinder 501 below, and the initial position is stopped at one end close to the buffer washer 701;
the fixed frames 606 are fixedly connected to the two sides of the base 607 respectively, the fixed frames 606 are fixedly connected to the inner side and the outer surface of the sliding frame 202, the purpose of the arrangement is to enable the chuck to move up and down, cylinder sleeves with different lengths are assembled, the upper surface and the lower surface of the chuck mechanism 6 are always in a horizontal state, and the purpose of the arrangement is to ensure that the axis of the cylinder sleeve is always vertical and coincides with the axis of the piston.
When the piston reverse buckle is used, a worker firstly places the piston reverse buckle on the upper pressing plate 801 at the top end of the fixing mechanism 8, the limiting block 803 is made to move outwards to prop against the inner wall of the piston by downwards extruding the spring, the limiting block 803 is made of rubber with larger friction force and is textured with the contact surface of the piston, so that the friction force is increased, the purpose of fixing the piston from the inner diameter is achieved, the axis of the piston and the axis of the fixing mechanism 8 are always kept coincident, and then the second driving base 806 is started to drive the second telescopic rod 805 to move upwards.
Next, the cylinder sleeve is placed in the center of the chuck mechanism 6, the chuck mechanism 6 at the initial position is relatively close to the buffer washer 701 at the lower part, the chuck mechanism 6 drives the sliding frame 202 to slowly ascend along with the lifting of the first telescopic rod 201 while the cylinder sleeve is placed in, meanwhile, the screw 602 of the chuck mechanism 6 automatically rotates and drives the gear plate 605 to rotate, the sliding block 604 can be moved and tightened along the sliding groove of the chuck cover 603 until the clamping jaw 601 fixes the cylinder sleeve main body, the axis of the cylinder sleeve can be kept vertical and fixed while the cylinder sleeve is fixed, and the axis of the cylinder sleeve can be coincident with the axis of the lower fixing mechanism 8.
After the cylinder sleeve is fixed, the upper hydraulic press 5 is started, the telescopic end of the hydraulic press 5 drives the movable plate 502 to vertically move downwards, the air cylinder 501 below the movable plate 502 generates vertical downward pressure force on the cylinder sleeve, meanwhile, as the clamping jaw 601 of the chuck mechanism 6 clamps the cylinder sleeve main body, the downward force of the hydraulic press 5 can enable the chuck mechanism 6 and the cylinder sleeve to integrally move downwards, the upper surface of the chuck mechanism 6 is in a horizontal state all the time, the automatic first telescopic rod 201 on the U-shaped support frame 2 also contracts along with the cylinder sleeve until the cylinder sleeve contacts with the buffer gasket 701, the cylinder sleeve is compacted, and at the moment, the piston is pushed into the cylinder sleeve, and the assembly is completed.
The method can be summarized as follows:
although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a piston assembly quality for slush pump makes, includes bottom plate (1), the equal fixedly connected with U type support frame (2) in upper surface both sides of bottom plate (1), the axis department fixedly connected with supporting seat (7), its characterized in that of upper surface of bottom plate (1):
the hydraulic machine comprises a supporting seat (7), a plurality of stand columns (3) are fixedly connected to the upper surface of the supporting seat (7), an upper beam plate (4) is fixedly connected to one end, away from the supporting seat (7), of each stand column (3), a plurality of moving plates (502) are arranged on the stand columns (3), the moving plates (502) are slidably arranged on the outer surfaces of the stand columns (3), an air cylinder (501) is fixedly connected to the center of the lower surface of each moving plate (502), and a hydraulic machine (5) is fixedly connected to the upper surface of the upper beam plate (4);
a fixing mechanism (8) is fixedly connected to the middle shaft of the upper surface of the bottom plate (1), and the top end of the fixing mechanism (8) penetrates through the upper surface of the supporting seat (7) and extends to the outer side;
the two U-shaped support frames (2) are respectively and slidably connected with a sliding frame (202), and the inner side surfaces of the sliding frames (202) are fixedly connected with a chuck mechanism (6);
the axes of the chuck mechanism (6) and the fixing mechanism (8) are overlapped.
2. A piston assembly apparatus for use in the manufacture of a mud pump as set forth in claim 1, wherein: the U-shaped support frame (2) is fixedly connected with the upper surface of the first driving base (203), the first driving base (203) is fixedly connected with the two sides of the upper surface of the bottom plate (1), the middle shaft of the upper surface of the first driving base (203) is fixedly connected with the first telescopic rod (201), and the top of the first telescopic rod (201) is fixedly connected with the sliding frame (202).
3. A piston assembly apparatus for use in the manufacture of a mud pump as set forth in claim 1, wherein: the support seat (7) is fixedly connected to the upper surface of the bottom plate (1) and located between the two U-shaped support frames (2), a buffer gasket (701) is fixedly connected to the upper surface of the support seat (7), and the inner diameter of the buffer gasket (701) is identical to the inner diameter of the top end of the fixing mechanism (8).
4. A piston assembly apparatus for use in the manufacture of a mud pump as set forth in claim 1, wherein: the fixing mechanism (8) comprises a second driving base (806), a second telescopic rod (805) is fixedly connected to the center of the upper surface of the second driving base (806), a circular mounting groove is formed in the top end of the second telescopic rod (805), and a base (804) is fixedly connected to the lower surface of the inside of the circular mounting groove.
5. A piston assembly apparatus for use in the manufacture of a mud pump as set forth in claim 4 wherein: an upper pressing plate (801) is arranged right above the base (804), the upper pressing plate (801) is connected with the base (804) through a spring, a plurality of supporting rods (802) and limiting blocks (803) are uniformly distributed on the periphery of the spring, the limiting blocks (803) are respectively connected with the base (804) and the upper pressing plate (801) in a rotating mode through two supporting rods (802), and an outwards protruding included angle is formed by the two supporting rods (802) connected with the limiting blocks (803).
6. A piston assembly apparatus for use in the manufacture of a mud pump as set forth in claim 1, wherein: the chuck mechanism (6) comprises a base (607), a gear disc (605) is rotatably arranged right above the base (607), a screw (602) is rotatably arranged in the middle of the base (607) and the gear disc (605), the screw (602) is meshed with the lower surface of the gear disc (605) and the upper surface of the base (607), and the screw (602) is mutually matched with the gear disc (605).
7. A piston assembly apparatus for use in the manufacture of a mud pump as set forth in claim 6, wherein: annular teeth are arranged on the upper surface of the gear plate (605), a plurality of sliding blocks (604) are slidably connected to the upper surface of the gear plate (605), teeth matched with the annular teeth are fixedly connected to the lower surface of the sliding blocks (604), a plurality of chuck covers (603) are sleeved on the outer sides of the sliding blocks (604), sliding grooves are formed in the tops of the chuck covers (603), grooves are vertically formed in the inner sides of the sliding blocks (604), and clamping claws (601) are rotatably connected to the inner sides of the grooves.
8. A piston assembly apparatus for use in the manufacture of a mud pump as set forth in claim 6, wherein: the two sides of the base (607) are respectively fixedly connected with a fixing frame (606), and the fixing frames (606) are fixedly connected to the inner side surface of the sliding frame (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310337553.5A CN116586947A (en) | 2023-03-31 | 2023-03-31 | Piston assembly device for manufacturing slurry pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310337553.5A CN116586947A (en) | 2023-03-31 | 2023-03-31 | Piston assembly device for manufacturing slurry pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116586947A true CN116586947A (en) | 2023-08-15 |
Family
ID=87603370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310337553.5A Withdrawn CN116586947A (en) | 2023-03-31 | 2023-03-31 | Piston assembly device for manufacturing slurry pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116586947A (en) |
-
2023
- 2023-03-31 CN CN202310337553.5A patent/CN116586947A/en not_active Withdrawn
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20230815 |
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| WW01 | Invention patent application withdrawn after publication |