CN112317982A - Cable welding automatic protection welding mould - Google Patents
Cable welding automatic protection welding mould Download PDFInfo
- Publication number
- CN112317982A CN112317982A CN202011155846.4A CN202011155846A CN112317982A CN 112317982 A CN112317982 A CN 112317982A CN 202011155846 A CN202011155846 A CN 202011155846A CN 112317982 A CN112317982 A CN 112317982A
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- China
- Prior art keywords
- welding
- mould
- semicircle
- pressure
- controller
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- 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.)
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Classifications
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- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F15/00—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire
- B21F15/02—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire
- B21F15/06—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire with additional connecting elements or material
- B21F15/08—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with wire with additional connecting elements or material making use of soldering or welding
-
- 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
-
- 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
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- 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
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
- H01R43/0263—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections for positioning or holding parts during soldering or welding process
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- General Induction Heating (AREA)
Abstract
The invention discloses an automatic protection welding mould for cable welding, which comprises a controller, wherein a plurality of supporting columns are symmetrically arranged on the controller, a protective plate is arranged at the upper ends of the supporting columns, two pressure pipes are symmetrically arranged on the upper surface of the controller, a piston rod is hermetically and slidably inserted into the upper end of each pressure pipe, a semicircular lower mould is arranged on each pressure pipe, and a semicircular upper mould is arranged on each piston rod. The invention realizes rapid hot-melt welding by the way that the upper arc lead and the lower arc lead are spirally connected in series with electromagnetic heating, automatically rises after welding is finished by heat conduction of the thermal inductance sheet and the heat conduction rod to finish welding, carries out welding protection through the upper pressure groove and the lower pressure groove, avoids empty welding through the electromagnetic disc and the permanent magnetic plate, realizes welding and protection linkage through the parallel connection of the electromagnetic disc and the control lead, and increases welding safety and welding firmness.
Description
Technical Field
The invention relates to the field of welding dies, in particular to an automatic protection welding die for cable welding.
Background
One of the indispensable technology of power device equipment during wire welding, wire welding can be connected two power devices or be connected terminal and power device, the erection joint of being convenient for, can produce a large amount of heats among the welding process, if make the upper and lower welding point long-term contact can lead to the temperature to rise sharply and take place danger after the welding.
The existing welding is generally direct welding, namely a lead is directly placed between welding tools for extrusion welding, the welding firmness is poor, sparks are easy to generate, and dangers can be caused.
Disclosure of Invention
The invention aims to solve the defects that in the prior art, direct welding firmness is poor, sparks are easy to generate, and safety accidents are caused, and provides an automatic protection welding die for cable welding.
In order to achieve the purpose, the invention adopts the following technical scheme:
a cable welding automatic protection welding mould comprises a controller, wherein a plurality of supporting columns are symmetrically installed on the controller, a protection plate is installed at the upper ends of the plurality of supporting columns, two pressure pipes are symmetrically installed on the upper surface of the controller, a piston rod is inserted into the upper ends of the pressure pipes in a sealing and sliding manner, a semicircular lower mould is installed on the two pressure pipes, a semicircular upper mould is installed on the two piston rods, a pressure cavity is formed in the semicircular lower mould, thermal expansion liquid is injected into the pressure cavity, a plurality of lower pressing grooves and upper pressing grooves are correspondingly formed in the opposite surfaces of the semicircular lower mould and the semicircular upper mould respectively, a plurality of lower electrode plates and a plurality of upper electrode plates are symmetrically embedded in the two sides of each lower pressing groove and each upper pressing groove on the opposite surfaces of the semicircular lower mould and the semicircular upper mould respectively, and a plurality of symmetrical lower arc wires are installed on the lower electrode plates in sequence, the symmetrical plurality of upper electrode pieces are sequentially and jointly provided with a plurality of upper arc wires, the upper surface of the semicircular lower die is embedded with a plurality of thermal inductance pieces, the lower end of each thermal inductance piece is provided with a heat conduction rod, and the lower end of each heat conduction rod extends into the pressure cavity.
Preferably, the lower surface of protection shield inlays and is equipped with the electromagnetic disc, and the upper end of semicircle upper die inlays and is equipped with the permanent magnetism board, the magnetism of the opposite face of electromagnetic disc and permanent magnetism board is opposite.
Preferably, the inner wall of pressure chamber is gone up the symmetry respectively and is inlayed and is equipped with a plurality of pressure pipes, every the one end that the pressure chamber was kept away from to the pressure pipe all extends to the outside of semicircle lower mould and connects the pressure pipe.
Preferably, the semicircular lower die and the controller are symmetrically provided with two control wires together, and the electromagnetic disc is connected with the two control wires in parallel.
Preferably, the plurality of lower arc wires and the plurality of upper arc wires are correspondingly connected in series in sequence through the plurality of lower electrode plates and the plurality of upper electrode plates, then are connected in parallel and are connected in series with the control wire.
The invention has the following beneficial effects:
1. a plurality of arc wire under through a plurality of electrode slices and a plurality of last electrode slice contact connection and a plurality of last arc wire series connection form heliciform heating coil, can will place the wire rod hot melt welding between arc groove and last arc groove under with, increase welded fastness, and do not produce the spark, and the welding is located arc groove and last arc groove down, and is less to external disturbance, is difficult for causing danger, safer.
2. The wire rod produces a large amount of heats by arc wire and last arc wire hot melt welding down in arc groove and last arc groove, the heat is conducted to the pressure chamber through hot-sensing piece and heat conduction stick and is made thermal energy liquid expand fast, make the piston rod drive mould rebound on the semicircle through the connecting tube, both cut off the connection between electrode slice and the last electrode piece down, make the heating stop, avoid the heating excessive, it is firm also to make mould and the quick heat dissipation butt fusion of semicircle lower mould separation on the semicircle, increase welded stability and fastness.
3. A plurality of lower arc wires and a plurality of last arc wires correspond to establish ties in proper order through a plurality of lower electrode slices and a plurality of last electrode slices and back parallel connection and establish ties with control wire, and the electromagnetic disc is parallelly connected with two control wire, then when the heating starts, the electromagnetic disc produces magnetic force, and when mould and semicircle lower mould separation heating stopped on the semicircle, the electromagnetic disc passes through magnetic force and adsorbs the permanent magnetic plate of mould top on the semicircle, make the mould can't fall on the semicircle, can avoid empty welding promptly, increase the security, and when heating when closing, the electromagnetic disc loses the electricity and demagnetizes and makes the mould whereabouts on the semicircle, can not heat after mould and the semicircle lower mould compound die this moment on the semicircle, further guarantee welded security.
In conclusion, the invention adopts the mode that the upper arc conductor and the lower arc conductor are spirally connected in series with the electromagnetic heating for rapid hot melting welding, the thermal inductance sheet and the thermal conduction rod conduct heat to enable the welding to be automatically lifted and finished after the welding is finished, the upper pressure groove and the lower pressure groove are used for welding protection, the electromagnetic disc and the permanent magnet plate are used for avoiding empty welding, the electromagnetic disc and the control conductor are connected in parallel to realize the linkage of welding and protection, and the welding safety and the welding firmness are improved.
Drawings
FIG. 1 is a schematic structural view of an automatic protective welding mold for cable welding according to the present invention;
FIG. 2 is an enlarged view of a semicircular lower die part of the automatic protective welding die for cable welding according to the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is an enlarged view of FIG. 3 at B;
fig. 5 is a partially enlarged view of a heat sensing piece of a cable welding automatic protective welding mold according to the present invention.
In the figure: the device comprises a controller 1, a support column 11, a control lead wire 12, a protective plate 2, an electromagnetic disc 21, a pressure tube 3, a piston rod 31, a pressure guide tube 32, a lower semicircular mold 4, a pressure cavity 41, thermal expansion liquid 411, a pressing groove 42, a lower arc lead wire 43, a lower electrode plate 44, an upper semicircular mold 5, a permanent magnetic plate 51, an upper pressing groove 52, an upper arc lead wire 53, an upper electrode plate 54, a thermal sensing plate 6 and a thermal conducting rod 61.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, an automatic protection welding mold for cable welding comprises a controller 1, wherein a plurality of supporting columns 11 are symmetrically installed on the controller 1, a protection plate 2 is installed at the upper ends of the supporting columns 11, two pressure pipes 3 are symmetrically installed on the upper surface of the controller 1, a piston rod 31 is hermetically and slidably inserted into the upper end of each pressure pipe 3, a semicircular lower mold 4 is installed on each pressure pipe 3, a semicircular upper mold 5 is installed on each piston rod 31, a pressure cavity 41 is formed in each semicircular lower mold 4, thermal expansion liquid 411 is filled in each pressure cavity 41, a plurality of lower pressure grooves 42 and a plurality of upper pressure grooves 52 are correspondingly formed in the opposite surfaces of the semicircular lower mold 4 and the semicircular upper mold 5, a plurality of lower electrode plates 44 and a plurality of upper electrode plates 54 are symmetrically embedded in the two sides of each lower pressure groove 42 and each upper pressure groove 52 on the opposite surfaces of the semicircular lower mold 4 and, a plurality of lower arc wires 43 are sequentially and commonly installed on the plurality of symmetrical lower electrode plates 44, a plurality of upper arc wires 53 are sequentially and commonly installed on the plurality of symmetrical upper electrode plates 54, a plurality of thermal sensing pieces 6 are embedded on the upper surface of the semicircular lower die 4, a heat conducting rod 61 is installed at the lower end of each thermal sensing piece 6, and the lower end of each heat conducting rod 61 extends into the pressure cavity 41.
The lower surface of protection shield 2 inlays and is equipped with electromagnetic disc 21, and mould 5's on the semicircle upper end inlays and is equipped with permanent magnetic plate 51, and the magnetism of electromagnetic disc 21 and permanent magnetic plate 51's opposite face is opposite, and after electromagnetic disc 21 circular telegram, permanent magnetic plate 51 is adsorbed by electromagnetic disc 21 after being close electromagnetic disc 21 for mould 5 can't fall on the semicircle, avoids appearing empty welding and causes danger.
Inlay respectively the symmetry on the inner wall of pressure chamber 41 and be equipped with a plurality of connecting pipes 32, the one end that pressure chamber 41 was kept away from to every connecting pipe 32 all extends to the outside of semicircle lower mould 4 and is connected the manometer pipe 3, the heat that the welding produced is conducted to thermal expansion liquid 411 through hotness sensing piece 6 and heat conduction stick 61, make thermal expansion liquid 411 rapid expansion and promote piston rod 31 through connecting pipe 32 and upwards drive semicircle on the mould 5 and remove, make arc wire 43 and last arc wire 53 disconnection stop heating down, realize the function that automatic stop welding was opened, avoid the overwelding.
Two control wires 12 are symmetrically installed on the semicircular lower die 4 and the controller 1 together, the electromagnetic disc 21 is connected with the two control wires 12 in parallel, the electromagnetic disc 21 and the control wires 12 are heated and work simultaneously, the electromagnetic disc 21 enables the semicircular upper die 5 to not fall automatically through the adsorption permanent magnetic plate 51, and the empty welding condition can be avoided.
The plurality of lower arc wires 43 and the plurality of upper arc wires 53 are correspondingly connected in series in sequence through the plurality of lower electrode plates 44 and the plurality of upper electrode plates 54, then are connected in parallel and are connected in series with the control wire 12, namely, the plurality of lower arc wires 43 and the plurality of upper arc wires 53 are connected end to end up and down through the plurality of lower electrode plates 44 and the plurality of upper electrode plates 54 to form a spiral coil for eddy current heating, and the control wire 12 is connected in series to control the heating.
When the welding device is used, the connecting position of wires to be welded is placed between the lower pressure groove 42 and the upper pressure groove 52, then a power switch is turned on, a welding button is pressed, and current flows into a plurality of spiral heating coils formed by connecting a plurality of lower arc conducting wires 43, a plurality of upper arc conducting wires 53, a plurality of lower electrode plates 44 and a plurality of upper electrode plates 54 in series end to end from the control conducting wire 12, so that the wires in the lower pressure groove 42 and the upper pressure groove 52 are quickly welded;
the heat of welding is conducted into the thermal expansion liquid 411 in the pressure cavity 41 through the thermal sensing sheet 6 and the heat conducting rod 61, so that the thermal expansion liquid 411 is rapidly expanded and pushes the piston rod 31 to upwards drive the semicircular upper die 5 to move along the pressure conducting pipe 32, the permanent magnetic plate 51 is adsorbed by the electromagnetic disc 21 which is connected with the control lead 12 in parallel, the semicircular upper die 5 is prevented from falling down to form empty welding after being cooled, and the safety is improved;
after changing the wire rod, press the welding button once more, cut off the electric power energy supply of control wire 12 and electromagnetic disc 21, press the welding button once more after waiting mould 5 fall line on the semicircle and weld, the welding of hot melt can increase welded fastness, and indent 42 and last indent 52 can be wrapped up the welding wire rod down, avoid causing the influence to the external world.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The utility model provides a cable welding automatic protection welding mould, includes controller (1), its characterized in that, a plurality of support columns (11) are installed to the symmetry on controller (1), and is a plurality of protection shield (2) are installed jointly to the upper end of support column (11), two pressure pipes (3) are installed to the upper surface symmetry of controller (1), every the upper end of pressure pipe (3) is all sealed to slide and is inserted and is equipped with piston rod (31), two install semicircle lower mould (4) jointly on pressure pipe (3), two install semicircle last mould (5) jointly on piston rod (31), seted up pressure chamber (41) in semicircle lower mould (4), interior thermal expansion liquid (411) of having annotated of pressure chamber (41), correspond respectively on the opposite face of semicircle lower mould (4) and semicircle last mould (5) and seted up a plurality of indent (42) and last indent (52), the both sides that lie in every indent (42) and last indent (52) on the opposite face of semicircle lower mould (4) and semicircle mould (5) symmetry respectively inlay and are equipped with a plurality of lower electrode piece (44) and a plurality of upper electrode piece (54), a plurality of symmetry install a plurality of lower arc wire (43) on lower electrode piece (44) jointly in proper order, a plurality of symmetrical go up arc wire (53) on upper electrode piece (54) install jointly in proper order, it is equipped with a plurality of hot sensing piece (6) to inlay on the upper surface of semicircle lower mould (4), every hot sensing piece (6)'s lower extreme all installs heat conduction stick (61), every the lower extreme of heat conduction stick (61) all extends to in pressure chamber (41).
2. The automatic protective welding mould for cable welding as claimed in claim 1, wherein an electromagnetic disc (21) is embedded in the lower surface of the protection plate (2), a permanent magnetic plate (51) is embedded in the upper end of the semicircular upper die (5), and the magnetism of the opposite surface of the electromagnetic disc (21) and the opposite surface of the permanent magnetic plate (51) are opposite.
3. A cable welding automatic protection welding die according to claim 1, characterized in that a plurality of pressure guiding pipes (32) are symmetrically embedded on the inner wall of the pressure chamber (41), and one end of each pressure guiding pipe (32) far away from the pressure chamber (41) extends to the outer side of the semicircular lower die (4) and is connected with the pressure pipe (3).
4. The automatic protective welding mould for cable welding as claimed in claim 1, wherein two control wires (12) are symmetrically installed on the semicircular lower mould (4) and the controller (1), and the electromagnetic disc (21) is connected with the two control wires (12) in parallel.
5. A cable welding automatic protective welding mould according to claim 4, characterized in that a plurality of said lower arc conducting wires (43) and a plurality of said upper arc conducting wires (53) are connected in series in turn and then connected in parallel and connected in series with the control conducting wire (12) through a plurality of lower electrode plates (44) and a plurality of upper electrode plates (54).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011155846.4A CN112317982A (en) | 2020-10-26 | 2020-10-26 | Cable welding automatic protection welding mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011155846.4A CN112317982A (en) | 2020-10-26 | 2020-10-26 | Cable welding automatic protection welding mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112317982A true CN112317982A (en) | 2021-02-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011155846.4A Pending CN112317982A (en) | 2020-10-26 | 2020-10-26 | Cable welding automatic protection welding mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112317982A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101594964A (en) * | 2006-09-18 | 2009-12-02 | 斯宾达科林焊接有限公司 | The equipment that is used for the solid-state welding of induction friction |
| US20130240608A1 (en) * | 2012-03-19 | 2013-09-19 | Wistron Corporation | Clamping tool and equipment for rework process |
| CN105291137A (en) * | 2015-12-05 | 2016-02-03 | 重庆镭宝激光智能机器人制造有限公司 | Welding cable guide device of welding robot |
| CN207272503U (en) * | 2017-09-27 | 2018-04-27 | 武汉盖伦科技有限公司 | A kind of cable connector automatic welding presses equipment |
| CN207930123U (en) * | 2018-03-16 | 2018-10-02 | 上海蓬渤机电设备有限公司 | A kind of motor welder |
| CN208285570U (en) * | 2018-06-30 | 2018-12-25 | 深圳市安迪尔电器有限公司 | A kind of long baking oven case heating wire mounting structure |
| CN109326933A (en) * | 2018-10-27 | 2019-02-12 | 白国强 | A kind of socket that safety is good |
| CN111619075A (en) * | 2020-06-04 | 2020-09-04 | 陈辉 | Injection mold convenient to take off material |
| CN111687513A (en) * | 2020-06-24 | 2020-09-22 | 伍雄飞 | Industrial welding robot and cooling device thereof |
| CN111786275A (en) * | 2020-07-06 | 2020-10-16 | 龙世金 | Fire balloon-imitated type electric power cabinet heat dissipation device |
-
2020
- 2020-10-26 CN CN202011155846.4A patent/CN112317982A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101594964A (en) * | 2006-09-18 | 2009-12-02 | 斯宾达科林焊接有限公司 | The equipment that is used for the solid-state welding of induction friction |
| US20130240608A1 (en) * | 2012-03-19 | 2013-09-19 | Wistron Corporation | Clamping tool and equipment for rework process |
| CN105291137A (en) * | 2015-12-05 | 2016-02-03 | 重庆镭宝激光智能机器人制造有限公司 | Welding cable guide device of welding robot |
| CN207272503U (en) * | 2017-09-27 | 2018-04-27 | 武汉盖伦科技有限公司 | A kind of cable connector automatic welding presses equipment |
| CN207930123U (en) * | 2018-03-16 | 2018-10-02 | 上海蓬渤机电设备有限公司 | A kind of motor welder |
| CN208285570U (en) * | 2018-06-30 | 2018-12-25 | 深圳市安迪尔电器有限公司 | A kind of long baking oven case heating wire mounting structure |
| CN109326933A (en) * | 2018-10-27 | 2019-02-12 | 白国强 | A kind of socket that safety is good |
| CN111619075A (en) * | 2020-06-04 | 2020-09-04 | 陈辉 | Injection mold convenient to take off material |
| CN111687513A (en) * | 2020-06-24 | 2020-09-22 | 伍雄飞 | Industrial welding robot and cooling device thereof |
| CN111786275A (en) * | 2020-07-06 | 2020-10-16 | 龙世金 | Fire balloon-imitated type electric power cabinet heat dissipation device |
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Application publication date: 20210205 |