CN112588978A - Tool for pressing and riveting upper end cover and lower end cover of air conditioner motor - Google Patents
Tool for pressing and riveting upper end cover and lower end cover of air conditioner motor Download PDFInfo
- Publication number
- CN112588978A CN112588978A CN202011338310.6A CN202011338310A CN112588978A CN 112588978 A CN112588978 A CN 112588978A CN 202011338310 A CN202011338310 A CN 202011338310A CN 112588978 A CN112588978 A CN 112588978A
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- movable
- block
- air conditioner
- riveting
- locking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a riveting tool for upper and lower end covers of an air conditioner motor, which is characterized in that when the air conditioner motor is subjected to riveting work, the motor is firstly positioned for the first time through a movable calibration block arranged in the riveting tool, so that the motor can be well limited and locked during the riveting work, the phenomenon of position sliding and deviation of the motor in the driving process of a workbench is avoided, and the normal operation of the riveting work is ensured; the arc-shaped limiting plate and the locking mechanism can well lock and position the air conditioner motor at a machining site on the workbench when the air conditioner motor is riveted, can ensure that the motor does not shake during riveting, ensures the position coincidence precision of the riveting machining site and a riveting workpiece, further improves the riveting machining working quality of the air conditioner motor, and improves the working economic benefit.
Description
Technical Field
The invention relates to the technical field of design of press riveting tools, in particular to a press riveting lower tool for upper and lower end covers of an air conditioner motor.
Background
For the prior art, the upper end cover and the lower end cover of the used air conditioner motor are usually connected by bolts and are manually carried out; the riveting press is generally used in the riveting process, a punching machine and a special connecting die are utilized to form a stress-free concentrated internal embedding round point with certain tensile strength and shear strength according to the cold extrusion deformation of the plate material by an instant strong high-pressure processing process, so that two or more layers of plate materials with different materials and different thicknesses can be connected, the working advantages of the riveting press include that 1, the connecting point is firm and reliable, no raw material consumption and no auxiliary material are needed, the metal material limitation and the thickness limitation are surpassed, the connection of a round point and a huge point can be formed, the connecting area has no thermal stress, the protective layer on the surface of a workpiece can not be damaged, the pretreatment or post-treatment is not needed, the interlayer and multilayer connection is allowed, and the working environment is good, no dust and toxic smoke discharge, no noise, simple operation, low consumption and low maintenance cost.
In the prior art, the riveting operation of the air conditioner motor is generally that the motor is placed on a workbench, then the workbench is pushed by hydraulic pressure, the air conditioner motor is pushed to a processing site, then the riveting operation is carried out on the air conditioner motor, in the process, the motors are simply placed on the workbench, and no good auxiliary tool for riveting, fixing and limiting is provided, on one hand, when the workbench drives the motor to move, the motor position can slide, and further the riveting position point position can be deviated, thereby having influence on the riveting operation, in the riveting process of the motor, the position coincidence of the riveting processing station and the riveting workpiece can be caused to generate deviation, therefore, the riveting working quality is reduced, the economic benefits of processing and production work are influenced, and therefore the invention provides the riveting tool for the upper end cover and the lower end cover of the air conditioner motor, which is used for solving the problems.
Disclosure of Invention
The invention aims to provide a riveting tool for upper and lower end covers of an air conditioner motor, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a press riveting lower tool for upper and lower end covers of an air conditioner motor comprises a workbench, a fixed body, a movable calibration block, an arc limiting plate and a locking mechanism;
the worktable is integrally provided with a fixed body, a placing groove is arranged in the fixed body, and movable calibration blocks are symmetrically and movably arranged in the fixed body;
one end of the movable calibration block is provided with an auxiliary inclined plane, the other end of the movable calibration block is provided with an extrusion spring in a connected mode, a first transmission rack is arranged on the movable calibration block, the first transmission rack is arranged on one side of the transmission gear in a meshed mode, the transmission gear is movably arranged in the fixed body, and the other side of the transmission gear is arranged with a second transmission rack in a meshed mode;
the second transmission rack is movably arranged in the fixed body, one end of the second transmission rack is provided with a tension spring, a limiting auxiliary block is movably arranged in the second transmission rack, one end of the limiting auxiliary block is provided with an arc limiting plate, the other end of the limiting auxiliary block is provided with a first return spring, and a first arc inclined plane extrusion block is integrally formed on the limiting auxiliary block;
the fixed body is provided with a movable groove on the upper side of the second transmission rack, and the fixed body is provided with a fixed ring at the side of the notch of the placing groove;
the activity is provided with the bulge loop in the stationary ring, and the equidistance is provided with second arc inclined plane extrusion piece on the bulge loop to bulge loop integrated into one piece sets up at the activity lantern ring, and the activity lantern ring cup joints the setting on stationary ring, and the lateral wall equidistance of the activity lantern ring is provided with the rotation handle, and the stationary body is provided with locking mechanism in the avris position of the activity lantern ring.
Preferably, the locking mechanism comprises a fixed block, a first movable insert block, a second movable insert block, a movable block, a locking insert column, an extrusion chute and a locking positioning circular groove, the fixed block is integrally formed on the fixed body, and is arranged at the side position of the movable lantern ring, a first movable inserting block is inserted into the fixed block, one end of the first movable inserting block is provided with a second movable inserting block, and the second movable insert block is connected with a second return spring at the same end as the first movable insert block, the movable block is movably arranged in the fixed block, the movable block is arranged at the side position of the second movable inserting block, one end of the movable block is provided with a locking inserting column, the movable block is provided with an extrusion chute, and the movable block is connected with the same end of the locking plug column and is provided with a third reset spring, and the locking positioning circular grooves are arranged on the outer side wall of the movable lantern ring at equal intervals.
Preferably, the arc-shaped limiting plate and the movable calibration block are arranged at corresponding positions and have the same number of groups, and at least four groups are arranged.
Preferably, the second arc-shaped inclined plane extrusion blocks and the first arc-shaped inclined plane extrusion blocks are corresponding in arrangement position, are same in arrangement group number, and are at least four.
Preferably, the locking positioning circular groove corresponds to the locking inserting column in arrangement position, and the diameter of the locking positioning circular groove is equal to that of the locking inserting column in arrangement position.
Compared with the prior art, the invention has the beneficial effects that:
1. when the riveting operation of the air conditioner motor is carried out, the motor is firstly positioned by the movable calibration block, so that the motor can be well limited and locked during the riveting operation, the phenomena of position sliding and deviation cannot be generated during the driving process of the workbench, and the normal operation of the riveting operation is ensured;
2. the arc-shaped limiting plate and the locking mechanism can well lock and position the air conditioner motor at a machining site on the workbench when the air conditioner motor is riveted, can ensure that the motor does not shake during riveting, ensures the position coincidence precision of the riveting machining site and a riveting workpiece, further improves the riveting machining working quality of the air conditioner motor, and improves the working economic benefit.
Drawings
FIG. 1 is a left side schematic view of a connection structure according to the present invention;
FIG. 2 is a right side schematic view of a connection structure according to the present invention;
FIG. 3 is a partial cross-sectional top view of the internal connection structure of the present invention;
FIG. 4 is a partially enlarged view of the internal connection structure of the fixing body shown in FIG. 3 according to the present invention;
FIG. 5 is an enlarged view of the internal connection structure of the locking mechanism of FIG. 3 according to the present invention;
FIG. 6 is a bottom view, partially in section, of the internal connection structure of the present invention;
fig. 7 is a partially enlarged view of the connection structure shown in fig. 6 according to the present invention.
In the figure: the device comprises a workbench 1, a fixed body 2, a placing groove 3, a movable calibration block 4, an auxiliary inclined plane 5, an extrusion spring 6, a first transmission rack 7, a transmission gear 8, a second transmission rack 9, a tension spring 10, a limiting auxiliary block 11, an arc limiting plate 12, a first arc inclined plane extrusion block 13, a movable groove 14, a fixed ring 15, a convex ring 16, a second arc inclined plane extrusion block 17, a movable lantern ring 18, a rotating handle 19, a locking mechanism 20, a fixed block 2001, a first movable insertion block 2002, a second movable insertion block 2003, a movable block 2004, a locking insertion column 2005, an extrusion chute 2006 and a locking positioning circular groove 2007.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below. The embodiments of the present invention, and all other embodiments obtained by a person of ordinary skill in the art without any inventive work, belong to the scope of protection of the present invention.
Referring to fig. 1 to 7, the present invention provides a technical solution: the invention relates to a riveting tool for upper and lower end covers of an air conditioner motor, which comprises a workbench 1, a fixed body 2, a movable calibration block 4, an arc limiting plate 12 and a locking mechanism 20;
the workbench 1 is integrally provided with a fixed body 2, the fixed body 2 is internally provided with a placing groove 3, the fixed body 2 is symmetrically and movably provided with movable calibration blocks 4, and the movable calibration blocks 4 are arranged for the purpose of primary positioning when riveting and pressing the air conditioner motor;
one end of the movable calibration block 4 is provided with an auxiliary inclined plane 5, the other end of the movable calibration block 4 is provided with an extrusion spring 6 in a connecting manner, the movable calibration block 4 is provided with a first transmission rack 7, the first transmission rack 7 is arranged on one side of a transmission gear 8 in a meshing connection manner, the transmission gear 8 is movably arranged in the fixed body 2, and the other side of the transmission gear 8 is arranged with a second transmission rack 9 in a meshing connection manner;
the second transmission rack 9 is movably arranged in the fixed body 2, one end of the second transmission rack 9 is provided with a tension spring 10, the second transmission rack 9 is movably provided with a limiting auxiliary block 11, one end of the limiting auxiliary block 11 is provided with an arc limiting plate 12, the other end of the limiting auxiliary block 11 is provided with a first return spring, and the limiting auxiliary block 11 is integrally provided with a first arc inclined plane extrusion block 13;
the fixed body 2 is provided with a movable groove 14 on the upper side of the second transmission rack 9, and the fixed body 2 is provided with a fixed ring 15 at the side position of the notch of the placing groove 3;
the movable bulge loop 16 is movably arranged in the fixed ring 15, the second arc-shaped inclined plane extrusion blocks 17 are equidistantly arranged on the bulge loop 16, the bulge loop 16 is integrally formed on the movable lantern ring 18, the movable lantern ring 18 is sleeved on the fixed ring 15, the rotating handles 19 are equidistantly arranged on the outer side wall of the movable lantern ring 18, and the locking mechanism 20 is arranged on the side position of the fixed body 2 on the movable lantern ring 18.
Further, the arc limiting plate 12 and the movable calibration block 4 are arranged at corresponding positions and have the same number of groups, and at least four groups are arranged.
Furthermore, the second arc-shaped inclined plane extrusion blocks 17 correspond to the first arc-shaped inclined plane extrusion blocks 13 in arrangement position, are arranged in the same number of groups, and are at least four.
Further, the locking mechanism 20 includes a fixed block 2001, a first movable insert 2002, a second movable insert 2003, a movable block 2004, a locking insert 2005, a pressing inclined groove 2006, and a locking positioning circular groove 2007, wherein the fixed block 2001 is integrally formed on the fixed body 2 and disposed at a side position of the movable collar 18, the fixed block 2001 is inserted with the first movable insert 2002, one end of the first movable insert 2002 is disposed with the second movable insert 2003, the second movable insert 2003 is connected with the same end as the first movable insert 2002 and is disposed with a second return spring, the movable block 2004 is movably disposed in the fixed block 2001 and is disposed at a side position of the second movable insert 2003, one end of the movable block 2004 is disposed with the locking insert 2005, the movable block 2004 is disposed with the pressing inclined groove 2006, and the movable block 2004 is connected with a third return spring at the same end as the locking insert 2005, locking and positioning circular slots 2007 are equidistantly formed in the outer side wall of the movable collar 18.
Further, the locking positioning circular groove 2007 corresponds to the position where the locking insertion column 2005 is arranged, and the diameters of the locking positioning circular groove 2007 and the locking insertion column 2005 are equal.
The working principle is as follows: when the riveting and pressing work of the air conditioner motor end cover is carried out, firstly, the motor is placed in the placing groove 3 in the fixed body 2, in the process, the motor extrudes the movable calibration block 4 to further push the movable calibration block 4 to move towards the fixed body 2, then the first transmission rack 7 arranged on the movable calibration block 4 drives the transmission gear 8, the transmission gear 8 drives the second transmission rack 9 arranged on the other side to carry out transmission, further the limiting auxiliary block 11 in the second transmission rack 9 pushes the arc limiting plate 12 at one end of the limiting auxiliary block to extrude and limit the side wall of the motor, in the process, the first arc inclined plane extrusion block 13 arranged on the limiting auxiliary block 11 moves in the movable groove 14, then the movable sleeve ring 18 is rotated through the rotating handle 19, and the movable sleeve ring 18 drives the convex ring 16 to rotate along with the rotation of the movable sleeve ring 18, the convex ring 16 drives the second arc-shaped inclined plane extrusion block 17 to rotate, so as to extrude the first arc-shaped inclined plane extrusion block 13, the first arc-shaped inclined plane extrusion block 13 further pushes the arc-shaped limiting plate 12 at one end of the limiting auxiliary block 11 to limit and clamp the side wall of the motor, so as to play a role in strengthening the positioning of the motor, in addition, the first movable insertion block 2002 is pressed while the movable lantern ring 18 is rotated, the first movable insertion block 2002 pushes the second movable insertion block 2003 to enter the extrusion chute 2006 on the movable block 2004, so that the movable block 2004 drives the locking insertion column 2005 to be separated from the locking positioning circular groove 2007 at the side of the movable lantern ring 18, the positioning of the movable lantern ring 18 is released, when the motor positioning and clamping work is completed, the first movable insertion block 2002 is stopped to be extruded, so that the locking insertion column 2005 is clamped in the locking positioning circular groove 2007 under the action of a third return spring, the movable lantern ring 18 is positioned and locked, so that the motor is positioned and locked, when the air conditioner motor is riveted, the motor is firstly positioned for the first time through the movable calibration block 4 arranged in the riveting machine, so that the motor can be well limited and locked during riveting, the phenomenon that the motor slides and deviates in the driving process of the workbench 1 is avoided, and normal riveting operation is guaranteed; through the arc limiting plate 12 and the locking mechanism 20 arranged in the invention, the air conditioner motor can be well locked and positioned at the processing site on the workbench 1 when in riveting operation, the motor can be ensured not to shake during riveting operation, the position coincidence precision of the riveting processing site and a riveting workpiece is ensured, the riveting processing working quality of the air conditioner motor is further improved, and the working economic benefit is improved
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a frock under air conditioner motor upper and lower end cover is pressed and is riveted which characterized in that: comprises a workbench (1), a fixed body (2), a movable calibration block (4), an arc limiting plate (12) and a locking mechanism (20);
a fixed body (2) is integrally formed on the workbench (1), a placing groove (3) is formed in the fixed body (2), and movable calibration blocks (4) are symmetrically and movably arranged in the fixed body (2);
an auxiliary inclined plane (5) is arranged at one end of the movable calibration block (4), an extrusion spring (6) is arranged at the other end of the movable calibration block (4) in a connecting mode, a first transmission rack (7) is arranged on the movable calibration block (4), the first transmission rack (7) is arranged on one side of a transmission gear (8) in a meshing connection mode, the transmission gear (8) is movably arranged in the fixed body (2), and a second transmission rack (9) is arranged on the other side of the transmission gear (8) in a meshing connection mode;
the second transmission rack (9) is movably arranged in the fixed body (2), one end of the second transmission rack (9) is provided with a tension spring (10), a limiting auxiliary block (11) is movably arranged in the second transmission rack (9), one end of the limiting auxiliary block (11) is provided with an arc limiting plate (12), the other end of the limiting auxiliary block (11) is provided with a first return spring, and a first arc inclined plane extrusion block (13) is integrally formed on the limiting auxiliary block (11);
a movable groove (14) is formed in the fixed body (2) on the upper side of the second transmission rack (9), and a fixing ring (15) is arranged on the fixed body (2) at the side of the notch of the placing groove (3);
the middle of the fixing ring (15) is movably provided with a convex ring (16), a second arc-shaped inclined plane extrusion block (17) is equidistantly arranged on the convex ring (16), the convex ring (16) is integrally formed on a movable sleeve ring (18), the movable sleeve ring (18) is sleeved on the fixing ring (15), the outer side wall of the movable sleeve ring (18) is equidistantly provided with a rotating handle (19), and a locking mechanism (20) is arranged at the side position of the fixing body (2) on the movable sleeve ring (18).
2. The air conditioner motor upper and lower end cover press riveting tool according to claim 1, characterized in that: the locking mechanism (20) comprises a fixed block (2001), a first movable inserting block (2002), a second movable inserting block (2003), a movable block (2004), a locking inserting column (2005), an extrusion chute (2006) and a locking positioning circular groove (2007), wherein the fixed block (2001) is integrally arranged on the fixed body (2) and is arranged at the side position of the movable lantern ring (18), the fixed block (2001) is provided with the first movable inserting block (2002) in an inserting mode, one end of the first movable inserting block (2002) is provided with the second movable inserting block (2003), the second movable inserting block (2003) is connected with the same end of the first movable inserting block (2002) and is provided with a second reset spring, the movable block (2004) is movably arranged in the fixed block (2001), the movable block (2004) is arranged at the side position of the second movable inserting block (2003), one end of the movable block (2004) is provided with the locking inserting column (2005), an extrusion chute (2006) is arranged on the movable block (2004), a third return spring is connected and arranged at the same end of the movable block (2004) and the locking inserting column (2005), and the locking positioning circular grooves (2007) are equidistantly arranged on the outer side wall of the movable sleeve ring (18).
3. The air conditioner motor upper and lower end cover press riveting tool according to claim 1, characterized in that: the arc limiting plates (12) and the movable calibration blocks (4) are arranged at corresponding positions and are arranged in the same number of groups, and at least four groups are arranged.
4. The air conditioner motor upper and lower end cover press riveting tool according to claim 1, characterized in that: the second arc-shaped inclined plane extrusion blocks (17) and the first arc-shaped inclined plane extrusion blocks (13) are corresponding in arrangement position, identical in arrangement group number and at least four in arrangement number.
5. The air conditioner motor upper and lower end cover press riveting tool according to claim 2, characterized in that: the locking positioning circular groove (2007) corresponds to the arrangement position of the locking inserting column (2005), and the arrangement diameters of the locking positioning circular groove and the locking inserting column are equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011338310.6A CN112588978A (en) | 2020-11-25 | 2020-11-25 | Tool for pressing and riveting upper end cover and lower end cover of air conditioner motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011338310.6A CN112588978A (en) | 2020-11-25 | 2020-11-25 | Tool for pressing and riveting upper end cover and lower end cover of air conditioner motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112588978A true CN112588978A (en) | 2021-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011338310.6A Withdrawn CN112588978A (en) | 2020-11-25 | 2020-11-25 | Tool for pressing and riveting upper end cover and lower end cover of air conditioner motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112588978A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114453200A (en) * | 2022-01-14 | 2022-05-10 | 中建八局第一建设有限公司 | Automatic brushing device for inner side of pipeline and implementation method thereof |
| CN115213338A (en) * | 2022-07-15 | 2022-10-21 | 西安北方光电科技防务有限公司 | Special-shaped printed circuit board riveting device and using method |
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| CN203056797U (en) * | 2013-01-14 | 2013-07-10 | 重庆轮辐机械自动化设备有限公司 | Lower fixture for riveting upper, lower end covers of air conditioner motor |
| CN106624924A (en) * | 2016-12-24 | 2017-05-10 | 天津汇之灵科技有限公司 | Tube clamping device |
| CN108313677A (en) * | 2018-04-08 | 2018-07-24 | 昆山木利机械设计有限公司 | A kind of automatic positioning equipment |
| CN108326596A (en) * | 2018-04-24 | 2018-07-27 | 爱发科东方真空(成都)有限公司 | Workpiece positioning clamp |
| CN208939783U (en) * | 2018-12-04 | 2019-06-04 | 天津飞旋高速电机科技有限公司 | A kind of magnetic suspension bearing rotor component and rotor bushing device |
| CN209001787U (en) * | 2018-11-24 | 2019-06-18 | 深圳盟浩电机有限公司 | The riveting device of micromotor |
| CN210281445U (en) * | 2019-06-27 | 2020-04-10 | 大连市锦泽精密模具有限公司 | Fixing device is used in spare part processing |
| CN210968618U (en) * | 2019-11-27 | 2020-07-10 | 苏州康索机电有限公司 | Clamp for machining motor end cover |
| CN111673638A (en) * | 2020-06-04 | 2020-09-18 | 朱冬冬 | Vertical locking device of silicon nitride ceramic rod production |
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2020
- 2020-11-25 CN CN202011338310.6A patent/CN112588978A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203056797U (en) * | 2013-01-14 | 2013-07-10 | 重庆轮辐机械自动化设备有限公司 | Lower fixture for riveting upper, lower end covers of air conditioner motor |
| CN106624924A (en) * | 2016-12-24 | 2017-05-10 | 天津汇之灵科技有限公司 | Tube clamping device |
| CN108313677A (en) * | 2018-04-08 | 2018-07-24 | 昆山木利机械设计有限公司 | A kind of automatic positioning equipment |
| CN108326596A (en) * | 2018-04-24 | 2018-07-27 | 爱发科东方真空(成都)有限公司 | Workpiece positioning clamp |
| CN209001787U (en) * | 2018-11-24 | 2019-06-18 | 深圳盟浩电机有限公司 | The riveting device of micromotor |
| CN208939783U (en) * | 2018-12-04 | 2019-06-04 | 天津飞旋高速电机科技有限公司 | A kind of magnetic suspension bearing rotor component and rotor bushing device |
| CN210281445U (en) * | 2019-06-27 | 2020-04-10 | 大连市锦泽精密模具有限公司 | Fixing device is used in spare part processing |
| CN210968618U (en) * | 2019-11-27 | 2020-07-10 | 苏州康索机电有限公司 | Clamp for machining motor end cover |
| CN111673638A (en) * | 2020-06-04 | 2020-09-18 | 朱冬冬 | Vertical locking device of silicon nitride ceramic rod production |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114453200A (en) * | 2022-01-14 | 2022-05-10 | 中建八局第一建设有限公司 | Automatic brushing device for inner side of pipeline and implementation method thereof |
| CN115213338A (en) * | 2022-07-15 | 2022-10-21 | 西安北方光电科技防务有限公司 | Special-shaped printed circuit board riveting device and using method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210402 |