CN111822814B - Jewelry oxygen welding gun with temperature electronic display screen - Google Patents
Jewelry oxygen welding gun with temperature electronic display screen Download PDFInfo
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- CN111822814B CN111822814B CN202010685241.XA CN202010685241A CN111822814B CN 111822814 B CN111822814 B CN 111822814B CN 202010685241 A CN202010685241 A CN 202010685241A CN 111822814 B CN111822814 B CN 111822814B
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- electronic display
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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
- B23K5/00—Gas flame 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
- B23K5/00—Gas flame welding
- B23K5/22—Auxiliary equipment, e.g. backings, guides
- B23K5/24—Arrangements for supporting torches
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a jewelry oxygen welding gun with a temperature electronic display screen, which comprises an oxygen tube and an acetylene tube, wherein a protection mechanism is arranged on the outer side of a spray head, cooling water is introduced into a connecting tube and the inner side of a spiral channel to reduce the temperature of a protection barrel, then the protection barrel is pulled leftwards, then a T-shaped sleeve ring drives the protection barrel to rotate 180 degrees, the protection barrel can rotate to enable the connecting tube to be always positioned at the front end of the protection barrel, then the pulling force on the T-shaped sleeve ring is cancelled, the T-shaped sleeve ring and the protection barrel are moved rightwards by the elastic force of a spring to cover and protect the left end of the outer side of the spray head, and the spray head is subjected to heat absorption and rapid cooling through the protection barrel, so that the spray head is rapidly protected and cooled, the external touch and scalding are prevented, and the service life of the spray head is prolonged.
Description
Technical Field
The invention relates to the relevant field of welding guns, in particular to a jewelry oxygen welding gun with a temperature electronic display screen.
Background
The welding gun is a part for executing welding operation in the welding process, is a tool for gas welding, is shaped like a gun, has a nozzle at the front end, sprays high-temperature flame as a heat source, is flexible to use, convenient and fast, and has a simple process.
After the oxygen welding gun is used, the spray head of the oxygen welding gun still can be in a high-temperature state and is difficult to quickly dissipate heat, so that the welding gun is easy to scald when being placed after being used, external personnel can easily touch the spray head carelessly, and the spray head is in the high-temperature state for a long time and is easy to influence the service life of the spray head.
Disclosure of Invention
Therefore, in order to solve the defects, the invention provides the jewelry oxygen welding gun with the temperature electronic display screen.
The invention is realized in such a way that a jewelry oxygen welding gun with a temperature electronic display screen is constructed, the device comprises an oxygen tube and an acetylene tube, the oxygen tube and the acetylene tube are connected with the right end of the inner side of a spray head after penetrating through the right end surface of a handle, a protection mechanism is arranged on the outer side of the spray head, the protection mechanism consists of a fixed ring, a fixed cylinder, a connecting rod, a rotating rod, a T-shaped sleeve ring, a protection cylinder, a connecting pipe, a support frame, a spring, a clamping block, a micro spring, a groove and a spiral channel, the inner ring of the fixed ring is fastened at the middle part of the outer side of the spray head, the fixed cylinder is arranged at the front end of the right end surface of the fixed ring, the connecting rod penetrates through the front end of the left end surface of the fixed ring, the connecting rod is connected with the right end of the inner side of the fixed cylinder through the spring, the rotating rod is rotatably connected with the left end surface of the connecting rod, the rotating rod is fastened at the rear end of the right end surface of the T-shaped sleeve ring, the T-shaped sleeve ring is movably nested at the right end of the outer side of the protection cylinder, the connecting pipes are symmetrically connected to the left end and the right end of the inner side of the spiral channel, the support frames are arranged on the left opposite surfaces and the right opposite surfaces of the two connecting pipes, the fixture block is connected to the left end face of the inner side of the groove through the miniature spring, the right end of the outer side of the fixture block is matched with the inner side of the clamping groove formed in the right end face of the inner side of the T-shaped sleeve, the groove is formed in the front end of the right end face of the protection barrel, and the spiral channel is formed in the edge of the inner portion of the protection barrel.
Preferably, the governing valve is installed to oxygen hose and acetylene pipe top right-hand member, the shower nozzle is embedded in handle left end top, and shower nozzle rear end face left end embedding has high temperature sensor, the ooff valve is installed to handle top right-hand member, and the embedding of lower part has the electronic display screen in the handle rear end face.
Preferably, the support frame comprises butt joint pole, first backup pad, second backup pad, silica gel piece, guide bar and screw rod, terminal surface is fastened respectively in first backup pad left end face middle part and second backup pad right end face middle part about the butt joint pole, the silica gel piece is pasted in first backup pad right end face and second backup pad left end face, both ends about the guide bar is installed to butt joint pole rear end face, and the guide bar activity stretches into the circular recess inboard that both ends were seted up about the terminal surface before the protection section of thick bamboo, the screw rod rotates and installs in butt joint pole rear end face middle part, and screw rod outside rear end and the threaded recess inboard threaded connection of seting up in the terminal surface middle part before the protection section of thick bamboo.
Preferably, the connecting rod is T-shaped, and a corresponding groove is formed in the front side of the right end face of the fixing ring.
Preferably, a heat-conducting ceramic layer is arranged on the inner side of the protection cylinder, and the inner diameter of the heat-conducting ceramic layer corresponds to the outer diameter of the spray head.
Preferably, the right end face of the inner side of the T-shaped sleeve ring is provided with two clamping grooves corresponding to the clamping blocks, and the two clamping grooves are respectively positioned on the front side and the rear side of the right end face of the inner side of the T-shaped sleeve ring.
Preferably, the right end of the outer side of the clamping block is in a rightward-convex semi-elliptical shape, and the outer surface of the clamping block is smooth and burr-free.
Preferably, the first support plate and the second support plate are cylindrical, openings are formed in the outer sides of the first support plate and the second support plate, and the end faces of the inner sides of the first support plate and the second support plate are parallel to the outer surface of the connecting pipe.
Preferably, the outer surface of the silica gel sheet is provided with anti-skid convex points, and the anti-skid coating points are arranged on the outer end surface of the silica gel sheet at equal intervals.
Preferably, the left end of the outer side of the screw rod is cylindrical, and the outer surface of the screw rod is coated with anti-skid paint.
The invention has the following advantages: the invention provides a jewelry oxygen welding gun with a temperature electronic display screen through improvement, compared with the same type of equipment, the invention has the following improvement:
the method has the advantages that: the invention relates to an oxygen welding gun for jewelry with a temperature electronic display screen, which is characterized in that a protection mechanism is arranged on the outer side of a spray head, cooling water is introduced into a connecting pipe and the inner side of a spiral channel to reduce the temperature of a protection barrel, then the protection barrel is pulled leftwards, then a T-shaped sleeve ring drives the protection barrel to rotate 180 degrees, the protection barrel can rotate automatically to enable the connecting pipe to be always positioned at the front end of the protection barrel, then the pulling force on the T-shaped sleeve ring is cancelled, the T-shaped sleeve ring and the protection barrel are moved rightwards under the elastic force of a spring to cover and protect the left end of the outer side of the spray head, the spray head is subjected to heat absorption and rapid cooling through the protection barrel, the spray head is rapidly protected and cooled, the external touch is prevented, and the service life of the spray head is prolonged.
The method has the advantages that: according to the jewelry oxygen welding gun with the temperature electronic display screen, the connecting rod is T-shaped, and the corresponding groove is formed in the front side of the right end face of the fixing ring, so that the connecting rod is prevented from being separated from the left end face of the fixing ring.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the protective mechanism of the present invention;
FIG. 3 is a schematic top cross-sectional view of the protection mechanism of the present invention;
FIG. 4 is a schematic view of a cartridge connecting structure according to the present invention;
fig. 5 is a schematic view of the supporting frame structure of the present invention.
Wherein: the device comprises an oxygen tube-1, an acetylene tube-2, a spray head-3, a high-temperature sensor-4, a handle-5, a switch valve-6, an electronic display screen-7, a regulating valve-8, a protection mechanism-9, a fixing ring-91, a fixing cylinder-92, a connecting rod-93, a rotating rod-94, a T-shaped lantern ring-95, a protection cylinder-96, a connecting tube-97, a support frame-98, a spring-99, a fixture block-910, a micro spring-911, a groove-912, a spiral channel-913, a butt joint rod-981, a first support plate-982, a second support plate-983, a silica gel sheet-984, a guide rod-985 and a screw rod-986.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 5, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1, the invention provides a jewelry oxygen welding gun with a temperature electronic display screen through improvement, which comprises an oxygen tube 1 and an acetylene tube 2, wherein the oxygen tube 1 and the acetylene tube 2 are connected with the right end of the inner side of a spray head 3 after passing through the right end surface of a handle 5, the right ends of the tops of the oxygen tube 1 and the acetylene tube 2 are provided with regulating valves 8, the spray head 3 is embedded in the top of the left end of the handle 5, the left end of the rear end surface of the spray head 3 is embedded with a high temperature sensor 4, the right end of the top of the handle 5 is provided with a switch valve 6, and the middle lower part of the rear end surface of the handle 5 is embedded with an electronic display screen 7, so that the temperature detected by the high temperature sensor 4 can be conveniently displayed.
Referring to fig. 2, 3 and 4, the present invention provides a jewelry oxygen welding gun with a temperature electronic display screen by improvement, wherein a protection mechanism 9 is arranged outside a nozzle 3, the protection mechanism 9 is composed of a fixing ring 91, a fixing cylinder 92, a connecting rod 93, a rotating rod 94, a T-shaped collar 95, a protecting cylinder 96, a connecting pipe 97, a supporting frame 98, a spring 99, a fixture block 910, a micro spring 911, a groove 912 and a spiral channel 913, an inner ring of the fixing ring 91 is fastened at the middle of the outside of the nozzle 3, the fixing cylinder 92 is arranged at the front end of the right end face of the fixing ring 91, the connecting rod 93 penetrates the front end of the left end face of the fixing ring 91, the connecting rod 93 is connected to the right end of the inside of the fixing cylinder 92 through the spring 99, the connecting rod 93 is T-shaped, the front side of the right end face of the fixing ring 91 is provided with a corresponding groove to prevent the connecting rod 93 from falling off from the left end face of the fixing ring 91, the rotating rod 94 is rotatably connected with the left end face of the connecting rod 93, the rotating rod 94 is fastened at the rear end of the right end face of the T-shaped sleeve ring 95, the T-shaped sleeve ring 95 is movably nested at the right end of the outer side of the protective cylinder 96, the right end face of the inner side of the T-shaped sleeve ring 95 is provided with two clamping grooves corresponding to the clamping blocks 910, the two clamping grooves are respectively positioned at the front side and the rear side of the right end face of the inner side of the T-shaped sleeve ring 95 so as to be convenient for fixing the protective cylinder 96 at an unused position, the inner side of the protective cylinder 96 is provided with a heat-conducting ceramic layer, the inner diameter of the heat-conducting ceramic layer corresponds to the outer diameter of the nozzle 3 so as to facilitate the high-temperature rapid conduction of the outer surface of the nozzle 3, the connecting pipes 97 are symmetrically connected at the left end and the right end of the inner side of the spiral channel 913, the left and the right opposite surfaces of the two connecting pipes 97 are provided with supporting frames 98, the clamping blocks 910 are connected at the left end face and the left end face of the inner side of the groove 912 through miniature springs 911 so as to facilitate the rapid resetting of the clamping blocks 910, and the right end of the outer sides of the clamping blocks 910 are matched with the clamping grooves arranged at the right end face of the inner side of the T-shaped sleeve ring 95, the right end of the outer side of the clamping block 910 is in a semi-elliptical shape protruding rightward, the outer surface of the clamping block 910 is smooth and burr-free, so that the clamping block 910 can move inwards in the process of rotating the protection cylinder 96, the groove 912 is formed in the front end of the right end face of the protection cylinder 96, and the spiral channel 913 is formed in the inner edge of the protection cylinder 96.
Referring to fig. 5, the present invention provides a jewelry oxygen welding gun with a temperature electronic display screen by improving, wherein a support frame 98 is composed of a butt joint rod 981, a first support plate 982, a second support plate 983, a silica gel sheet 984, a guide rod 985 and a screw rod 986, the butt joint rod 981 is fastened to the middle of the left end face of the first support plate 982 and the middle of the right end face of the second support plate 983, the first support plate 982 and the second support plate 983 are cylindrical with openings on the outer sides, the inner side end faces of the first support plate 982 and the second support plate 983 are parallel to the outer surface of the connecting pipe 97, so that the first support plate 982 and the second support plate 983 stably clamp and fix the connecting pipe 97, the silica gel sheet 984 is adhered to the right end face of the first support plate 982 and the left end face of the second support plate 983, the silica gel sheet 984 is provided with anti-slip coating points at equal intervals and two rows of convex points are provided on the outer side end face of the silica gel sheet 984, make more stable laminating of silica gel piece 984 on the surface of connecting pipe 97, both ends about guide bar 985 is installed in butt joint pole 981 rear end face, and the guide bar 985 activity stretches into the circular slot inboard that both ends were seted up about protection section of thick bamboo 96 front end face, screw rod 986 rotates and installs in butt joint pole 981 rear end face middle part, and screw rod 986 outside rear end and the threaded groove inboard threaded connection of seting up in protection section of thick bamboo 96 front end face middle part, screw rod 986 outside left end is the cylinder form, and the coating of screw rod 986 surface has anti-skidding lacquer, prevent to slide at the in-process of rotating screw rod 986.
Example two:
the invention provides a jewelry oxygen welding gun with a temperature electronic display screen through improvement, wherein the left end and the right end of the outer side of a spray head 3 form an included angle of 120 degrees, the left end of the outer side of the spray head 3 is inclined and extends towards the left lower end, so that the tail end of the spray head 3 is convenient to contact with a welding spot for observation, and the outer surface of a switch valve 6 is provided with a frosted layer which is a rough outer surface and is prevented from sliding in the process of rotating the switch valve 6.
The invention provides a jewelry oxygen welding gun with a temperature electronic display screen through improvement, and the working principle is as follows;
firstly, taking out the whole device, respectively connecting the oxygen tube 1, the acetylene tube 2, the high-temperature sensor 4, the electronic display screen 7 and the connecting tube 97 to corresponding positions of external equipment, and then holding the handle 5 by hand to adjust the position and the angle of the spray head 3;
secondly, at the moment, the jewelry to be welded can be placed on a designated position, another article to be connected is moved to a corresponding position, at the moment, an external ignition device can be placed at the tail end of the spray head 3, meanwhile, the switch valve 6 and the regulating valve 8 can be opened, so that the oxygen pipe 1 and the acetylene pipe 2 respectively inject corresponding gas into the inner side of the spray head 3, oxygen and acetylene can be ignited through the external ignition device, then the spray head 3 is moved again to carry out high-temperature melt welding on the jewelry, and the temperature at the tail end of the spray head 3 can be checked through the high-temperature sensor 4 in the using process of the spray head 3, and the checked information is displayed on the electronic display screen 7;
thirdly, after the nozzle 3 is used, cooling water can be introduced into the inner sides of the connecting pipe 97 and the spiral channel 913 to reduce the temperature of the protective cylinder 96, then the protective cylinder 96 is pulled leftwards, then the protective cylinder 96 can be driven by the T-shaped sleeve 95 to rotate 180 degrees, and the protective cylinder 96 can rotate to enable the connecting pipe 97 to be always positioned at the front end of the protective cylinder, after the protective cylinder 96 rotates, the fixture block 910 is moved rightwards by the elastic force of the micro spring 911 to enter the inner side of the clamping groove formed at the right end of the inner side of the T-shaped sleeve 95 to be fixed, then the pulling force on the T-shaped sleeve 95 is cancelled, so that the T-shaped sleeve 95 and the protective cylinder 96 are moved rightwards by the elastic force of the spring 99 to cover and protect the left end of the outer side of the nozzle 3, and the nozzle 3 is rapidly cooled by absorbing heat through the protective cylinder 96.
The invention provides a jewelry oxygen welding gun with a temperature electronic display screen through improvement, cooling water is introduced into the inner sides of a connecting pipe 97 and a spiral channel 913 so as to reduce the temperature of a protective cylinder 96, then the protective cylinder 96 is pulled leftwards, then a T-shaped sleeve ring 95 can drive the protective cylinder 96 to rotate 180 degrees, the protective cylinder 96 can rotate automatically so that the connecting pipe 97 is always positioned at the front end of the protective cylinder, after the protective cylinder 96 rotates, a fixture block 910 moves rightwards under the elastic force of a miniature spring 911 after the protective cylinder 96 rotates, enters the inner side of a clamping groove formed at the right end of the inner side of the T-shaped sleeve ring 95 to be fixed, then the pulling force on the T-shaped sleeve ring 95 is cancelled, so that the T-shaped sleeve ring 95 and the protective cylinder 96 move rightwards under the elastic force of a spring 99 to cover and protect the left end of the outer side of a nozzle 3, and the nozzle 3 is subjected to heat absorption and rapid cooling through the protective cylinder 96, so that the nozzle 3 is protected and cooled rapidly, scald caused by external touch is prevented, and the service life of the spray head 3 is prolonged; the connecting rod 93 is in a T-shaped appearance, and a corresponding groove is formed in the front side of the right end face of the fixing ring 91, so that the connecting rod 93 is prevented from being separated from the left end face of the fixing ring 91.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described, and the standard parts used in the present invention are all available on the market, the special-shaped parts can be customized according to the description and the accompanying drawings, the specific connection mode of each part adopts the conventional means of bolt and rivet, welding and the like mature in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, and the details are not described herein.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A jewelry oxygen welding gun with a temperature electronic display screen comprises an oxygen tube (1) and an acetylene tube (2), wherein the oxygen tube (1) and the acetylene tube (2) penetrate through the right end face of a handle (5) and then are connected with the right end of the inner side of a spray head (3);
the method is characterized in that: the spray head is characterized by further comprising a protection mechanism (9), the protection mechanism (9) is arranged on the outer side of the spray head (3), the protection mechanism (9) is composed of a fixing ring (91), a fixing cylinder (92), a connecting rod (93), a rotating rod (94), a T-shaped lantern ring (95), a protection cylinder (96), a connecting pipe (97), a support frame (98), a spring (99), a fixture block (910), a micro spring (911), a groove (912) and a spiral channel (913), the inner ring of the fixing ring (91) is fastened in the middle of the outer side of the spray head (3), the fixing cylinder (92) is installed at the front end of the right end face of the fixing ring (91), the connecting rod (93) penetrates through the front end of the left end face of the fixing ring (91), the connecting rod (93) is connected to the right end of the inner side of the fixing cylinder (92) through the spring (99), the rotating rod (94) is rotatably connected with the left end face of the connecting rod (93), and the rotating rod (94) is fastened at the rear end of the right end face of the T-shaped lantern ring (95), the T-shaped lantern ring (95) is movably nested at the right end of the outer side of the protection barrel (96), the connecting pipes (97) are symmetrically connected to the left end and the right end of the inner side of the spiral channel (913), the left and the right opposite surfaces of the two connecting pipes (97) are provided with the supporting frames (98), the fixture block (910) is connected to the left end face of the inner side of the groove (912) through the miniature spring (911), the right end of the outer side of the fixture block (910) is matched with the inner side of the clamping groove formed in the right end face of the inner side of the T-shaped lantern ring (95), the groove (912) is formed in the front end of the right end face of the protection barrel (96), the spiral channel (913) is formed in the inner edge of the protection barrel (96), the supporting frame (98) is formed by a butt joint rod (981), a first supporting plate (982), a second supporting plate (983), a silica gel sheet (984), a guide rod (985) and a screw rod (986), the left and right end faces of the butt joint rod (981) are fastened to the middle part of the left end face of the second supporting plate (982) and right end face of the second supporting plate (983), silica gel piece (984) paste in first backup pad (982) right-hand member face and second backup pad (983) left end face, both ends about butt joint pole (981) rear end face are installed in guide bar (985), and guide bar (985) activity stretches into the circular recess inboard that both ends were seted up about protection section of thick bamboo (96) preceding terminal surface, screw rod (986) rotate install in butt joint pole (981) rear end face middle part, and screw rod (986) outside rear end and protection section of thick bamboo (96) preceding terminal surface middle part seted up the inboard threaded connection of thread groove.
2. The jewelry oxygen welding gun with the temperature electronic display screen according to claim 1, characterized in that: governing valve (8) are installed to oxygen hose (1) and acetylene pipe (2) top right-hand member, shower nozzle (3) are embedded in handle (5) left end top, and shower nozzle (3) rear end face left end embedding has high temperature sensor (4), ooff valve (6) are installed to handle (5) top right-hand member, and the embedding of lower part has electronic display screen (7) in handle (5) rear end face.
3. The jewelry oxygen welding gun with the temperature electronic display screen according to claim 1, characterized in that: the connecting rod (93) is T-shaped, and a corresponding groove is formed in the front side of the right end face of the fixing ring (91).
4. The jewelry oxygen welding gun with the temperature electronic display screen according to claim 1, characterized in that: the inner side of the protection cylinder (96) is provided with a heat-conducting ceramic layer, and the inner diameter of the heat-conducting ceramic layer corresponds to the outer diameter of the spray head (3).
5. The jewelry oxygen welding gun with the temperature electronic display screen according to claim 1, characterized in that: two clamping grooves corresponding to the clamping blocks (910) are formed in the right end face of the inner side of the T-shaped lantern ring (95), and the two clamping grooves are located on the front side and the rear side of the right end face of the inner side of the T-shaped lantern ring (95) respectively.
6. The jewelry oxygen welding gun with the temperature electronic display screen according to claim 1, characterized in that: the right end of the outer side of the clamping block (910) is in a rightward-convex semi-elliptical shape, and the outer surface of the clamping block (910) is smooth and burr-free.
7. The jewelry oxygen welding gun with the temperature electronic display screen according to claim 1, characterized in that: the first supporting plate (982) and the second supporting plate (983) are cylindrical, openings are formed in the outer sides of the first supporting plate and the second supporting plate, and the end faces of the inner sides of the first supporting plate (982) and the second supporting plate (983) are parallel to the outer surface of the connecting pipe (97).
8. The jewelry oxygen welding gun with the temperature electronic display screen according to claim 1, characterized in that: the outer surface of the silica gel sheet (984) is provided with anti-skidding convex points, and more than two lines of anti-skidding coating points are arranged on the outer end face of the silica gel sheet (984) at equal intervals.
9. The jewelry oxygen welding gun with the temperature electronic display screen according to claim 1, characterized in that: the left end of the outer side of the screw rod (986) is cylindrical, and the outer surface of the screw rod (986) is coated with anti-skid paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685241.XA CN111822814B (en) | 2020-07-16 | 2020-07-16 | Jewelry oxygen welding gun with temperature electronic display screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685241.XA CN111822814B (en) | 2020-07-16 | 2020-07-16 | Jewelry oxygen welding gun with temperature electronic display screen |
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| CN111822814A CN111822814A (en) | 2020-10-27 |
| CN111822814B true CN111822814B (en) | 2022-03-15 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111822814A (en) | 2020-10-27 |
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