CN114211155A - Brazing flux melting injection device, and preparation method and preparation equipment of flux-cored welding rod - Google Patents
Brazing flux melting injection device, and preparation method and preparation equipment of flux-cored welding rod Download PDFInfo
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- CN114211155A CN114211155A CN202210021902.8A CN202210021902A CN114211155A CN 114211155 A CN114211155 A CN 114211155A CN 202210021902 A CN202210021902 A CN 202210021902A CN 114211155 A CN114211155 A CN 114211155A
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- 230000004907 flux Effects 0.000 title claims abstract description 216
- 238000005219 brazing Methods 0.000 title claims abstract description 172
- 238000002347 injection Methods 0.000 title claims abstract description 172
- 239000007924 injection Substances 0.000 title claims abstract description 172
- 238000003466 welding Methods 0.000 title claims abstract description 44
- 238000002844 melting Methods 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 230000008018 melting Effects 0.000 title claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims description 52
- 239000002184 metal Substances 0.000 claims description 52
- 239000000945 filler Substances 0.000 claims description 51
- 230000006698 induction Effects 0.000 claims description 17
- 238000005476 soldering Methods 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000009957 hemming Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 23
- 238000004519 manufacturing process Methods 0.000 abstract description 20
- 239000000853 adhesive Substances 0.000 abstract description 8
- 230000001070 adhesive effect Effects 0.000 abstract description 8
- 230000036541 health Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 18
- 238000005491 wire drawing Methods 0.000 description 10
- 238000007789 sealing Methods 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000012043 crude product Substances 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 235000019633 pungent taste Nutrition 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/406—Filled tubular wire or rods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the field of cored electrodes, in particular to a method and a device for preparing the cored electrode. The invention aims to protect a brazing flux melting injection device, a preparation method and preparation equipment of a flux-cored welding rod. The brazing flux melting and injecting device comprises a brazing flux container, a spiral conveying piece and an injection pipe, wherein the injection pipe is provided with an injection pipe inlet and an injection pipe outlet, and the brazing flux container is provided with a container inlet and a container outlet; the spiral conveying piece is provided with a spiral channel and extends into the injection pipe and/or the brazing flux container; the flux melting and injecting device also comprises a conveying member driving mechanism and a heating device for heating and melting the flux in the injection pipe, wherein the spiral conveying member applies acting force to the flux through rotation so that the flux is conveyed to the outlet of the injection pipe and the melted flux is extruded out of the outlet of the injection pipe. The brazing flux melting and injecting device does not use an organic adhesive when in use, thereby avoiding the technical problem that the organic adhesive is easy to damage the health of production personnel.
Description
Technical Field
The invention relates to the field of cored electrodes, in particular to a method and a device for preparing the cored electrode.
Background
The flux-cored welding rod is widely applied to brazing in the fields of aerospace, automobiles, machinery, household appliances and the like, the flux-cored welding rod comprises a brazing flux and a brazing filler metal sheath wrapping the brazing flux, and the Chinese invention patent with application publication number of CN103480988A discloses a high-tin-silver-based welding rod and a preparation method thereof, wherein the preparation method comprises the following steps: copper and tin are firstly atomized into alloy powder according to a certain proportion to be used as a soldering flux, silver, copper and zinc are then melted into alloy cast ingots according to a certain proportion, after rough turning and skin removing and annealing of the alloy cast ingots, the cast ingots are extruded into brazing filler metal strips by using a horizontal extruder, the brazing filler metal strips are rolled for multiple times to form brazing filler metal thin strips, the brazing filler metal thin strips are used as brazing filler metal skins of flux-cored welding rods, the brazing filler metal skins are formed into U-shaped brazing filler metal skins after passing through a pay-off machine, a flat roller machine and a vertical roller machine, the soldering flux is added into U-shaped grooves of the brazing filler metal skins by a powder feeder, the U-shaped brazing filler metal skins are synthesized into O-shapes by using the flat roller machine, so that the brazing filler metal skins wrap the soldering flux, and then the finished flux-cored welding rods are finally obtained after the processes of wire drawing by a wire drawing machine and cutting-off machine. The pay-off machine forms an unreeling device for unreeling and conveying the brazing filler metal sheath, the flat roller machine and the vertical roller machine for reeling the brazing filler metal sheath into a U shape form a curling device, the powder feeding machine forms an injection device for injecting the brazing flux into a U-shaped groove surrounded by the brazing filler metal sheath, and the flat roller mechanism for synthesizing the brazing filler metal sheath into an O shape forms a sealing device for sealing the U-shaped brazing filler metal sheath.
In the preparation method of the flux-cored welding rod, the flux is used as powder and needs to be filled in the U-shaped groove of the brazing filler metal sheath, the traditional flux is filled in two modes, the first mode is that the flux mentioned in the preparation method of the flux-cored welding rod is sprayed in the U-shaped groove in a free falling mode, and then the brazing filler metal sheath is coiled. The second mode is that organic binder is needed to be added into the brazing flux to form a sticky paste, when the brazing flux filling mode is adopted, on one hand, organic chemical substances in the organic binder can emit pungent taste (part of the organic chemical substances also contain toxic and harmful aromatic hydrocarbons and benzene ring substances), the life safety and the body health of production personnel are seriously threatened, and in addition, organic substances are also extremely difficult to clean and remove, and the pollution to water and land is serious.
Disclosure of Invention
The invention aims to provide a brazing flux melting and injecting device, which is used for solving the technical problem that organic binders used in the brazing flux filling and injecting process are easy to damage the health of production personnel. The invention also provides a flux-cored welding rod preparation device comprising the flux-melting injection device, and in addition, the invention also provides a preparation method of the flux-cored welding rod.
The technical scheme of the preparation method of the flux-cored welding rod is as follows:
the preparation method of the flux-cored welding rod comprises the following steps: firstly, the flux is heated to a molten state, then the flux in the molten state is injected into a groove surrounded by a brazing filler metal sheath, and finally, the notch of the brazing filler metal sheath is sealed to form the flux-cored welding rod.
Has the advantages that: the preparation method of the flux-cored welding rod provided by the invention is that the brazing flux is heated to a molten state and is injected into the groove surrounded by the brazing filler metal sheath, and an organic adhesive is not used in the injection process of the brazing flux, so that the technical problem that the organic adhesive is easy to damage the health of production personnel is solved.
The technical scheme of the brazing flux melting and injecting device is as follows:
the flux melting and injecting device comprises a flux container for containing flux, a spiral conveying piece and an injection pipe positioned on the lower side of the flux container, wherein the injection pipe is provided with an injection pipe inlet and an injection pipe outlet, the flux container is provided with a container inlet for granular flux to enter and a container outlet for granular flux to discharge, and the injection pipe inlet is communicated with the flux container for granular flux to enter the injection pipe; the spiral conveying piece is provided with a spiral channel; the spiral conveying piece extends into the injection pipe and/or the brazing flux container, the brazing flux melting and injecting device further comprises a conveying piece driving mechanism and a heating device, the heating device is used for heating and melting the brazing flux in the injection pipe, the conveying piece driving mechanism is used for driving the spiral conveying piece to rotate, the spiral conveying piece exerts acting force on the brazing flux through rotation, the brazing flux is conveyed to the outlet of the injection pipe, and the molten brazing flux is extruded out of the outlet of the injection pipe.
Has the advantages that: when the brazing flux melting and injecting device is used, granular brazing flux is firstly added into a brazing flux container, the rotation of a screw drives the brazing flux to be conveyed into an injection pipe from the brazing flux container, then a heating device heats the brazing flux in the injection pipe to be in a molten state, and the brazing flux in the molten state is extruded out of an injection pipe outlet of the injection pipe under the action of the rotating screw and enters a groove surrounded by a brazing flux sheath. In the process of injecting the brazing flux into the groove surrounded by the brazing filler metal sheath, the brazing flux is heated and melted to be in a molten state, brazing flux dust is not generated, in addition, an organic adhesive is not used in the process, and the technical problem that the organic adhesive is easy to damage the body health of production personnel is solved.
Further, the screw conveyor extends into the injection tube and is arranged coaxially with the injection tube.
Has the advantages that: the spiral conveying piece extends into the injection pipe and is arranged coaxially with the injection pipe, so that the conveying of the brazing flux is controlled conveniently by controlling the rotation of the spiral conveying piece.
Further, the screw conveyor is in clearance fit with the wall of the injection tube inlet of the injection tube.
Has the advantages that: the spiral conveying part is in clearance fit with the wall of the injection tube, so that the aim of controlling the flux to quantitatively enter the injection tube is achieved by controlling the rotating speed of the spiral conveying part.
Further, a screw member extends into the flux container and out of the injection tube, and the screw member rotates to deliver flux to the injection tube and apply pressure to the flux in the injection tube.
Has the advantages that: the spiral conveying piece extends into the brazing flux container and is positioned outside the injection pipe, so that the brazing flux melting and injecting device is simple in structure and convenient to process and install.
Further, the screw passes through the flux container and the screw extends through the container outlet into the injection tube.
Has the advantages that: the spiral conveying piece penetrates through the brazing flux container and can convey the brazing flux from the brazing flux container to the injection pipe through rotation, and in the process, the screw can effectively reduce the probability of arching in the brazing flux container.
Further, the spiral conveying member is a screw.
Has the advantages that: the screw conveying piece adopts a screw, so that the structure is simple and the processing is convenient.
Further, the heating device is an induction heating device comprising an induction coil surrounding the outside of the syringe.
Has the advantages that: the induction heating device has simple structure and is convenient to install and control the heating temperature.
Further, the injection tube comprises a conical extrusion tube section, and the lower end opening of the conical extrusion tube section forms the outlet of the injection tube.
Has the advantages that: the provision of a syringe comprising a tapered extruded section enables better control of the rate at which flux in the molten state flows out of the syringe outlet.
The technical scheme of the flux-cored welding rod preparation equipment is as follows:
the flux-cored welding rod preparation equipment comprises an unreeling device used for unreeling and conveying a brazing filler metal sheath, a curling device used for curling the brazing filler metal sheath into a groove-shaped structure, an injection device used for injecting a brazing flux into a brazing flux containing groove surrounded by the brazing filler metal sheath, and a sealing device used for sealing the brazing flux containing groove, and further comprises the injection device, wherein the injection device comprises a brazing flux container used for containing the brazing flux, a spiral conveying piece and an injection pipe positioned on the lower side of the brazing flux container, the injection pipe is provided with an injection pipe inlet and an injection pipe outlet, the brazing flux container is provided with a container inlet used for allowing granular brazing flux to enter and a container outlet used for discharging granular brazing flux, and the injection pipe inlet is communicated with the brazing flux container and used for allowing the granular brazing flux to enter the injection pipe; the spiral conveying piece is provided with a spiral channel; the spiral conveying piece extends into the injection pipe and/or the brazing flux container, the brazing flux melting and injecting device further comprises a conveying piece driving mechanism and a heating device, the heating device is used for heating and melting the brazing flux in the injection pipe, the conveying piece driving mechanism is used for driving the spiral conveying piece to rotate, the spiral conveying piece exerts acting force on the brazing flux through rotation, the brazing flux is conveyed to the outlet of the injection pipe, and the molten brazing flux is extruded out of the outlet of the injection pipe.
Has the advantages that: when the injection device of the flux-cored welding rod preparation equipment is used, granular brazing flux is added into a brazing flux container, the rotation of a screw drives the brazing flux to be conveyed into an injection pipe from the brazing flux container, then a heating device heats the brazing flux in the injection pipe to be in a molten state, and the brazing flux in the molten state is extruded out of an injection pipe outlet of the injection pipe under the action of the rotating screw and enters a groove surrounded by a brazing flux sheath. In the process of injecting the brazing flux into the groove surrounded by the brazing filler metal sheath, the brazing flux is heated and melted to be in a molten state, brazing flux dust is not generated, in addition, an organic adhesive is not used in the process, and the technical problem that the organic adhesive is easy to damage the body health of production personnel is solved.
Further, the screw conveyor extends into the injection tube and is arranged coaxially with the injection tube.
Has the advantages that: the spiral conveying piece extends into the injection pipe and is arranged coaxially with the injection pipe, so that the conveying of the brazing flux is controlled conveniently by controlling the rotation of the spiral conveying piece.
Further, the screw conveyor is in clearance fit with the wall of the injection tube inlet of the injection tube.
Has the advantages that: the spiral conveying part is in clearance fit with the wall of the injection tube, so that the aim of controlling the flux to quantitatively enter the injection tube is achieved by controlling the rotating speed of the spiral conveying part.
Further, a screw member extends into the flux container and out of the injection tube, and the screw member rotates to deliver flux to the injection tube and apply pressure to the flux in the injection tube.
Has the advantages that: the spiral conveying piece extends into the brazing flux container and is positioned outside the injection pipe, so that the brazing flux melting and injecting device is simple in structure and convenient to process and install.
Further, the screw passes through the flux container and the screw extends through the container outlet into the injection tube.
Has the advantages that: the spiral conveying piece penetrates through the brazing flux container and can convey the brazing flux from the brazing flux container to the injection pipe through rotation, and in the process, the screw can effectively reduce the probability of arching in the brazing flux container.
Further, the spiral conveying member is a screw.
Has the advantages that: the screw conveying piece adopts a screw, so that the structure is simple and the processing is convenient.
Further, the heating device is an induction heating device comprising an induction coil surrounding the outside of the syringe.
Has the advantages that: the induction heating device has simple structure and is convenient to install and control the heating temperature.
Further, the injection tube comprises a conical extrusion tube section, and the lower end opening of the conical extrusion tube section forms the outlet of the injection tube.
Has the advantages that: the provision of a syringe comprising a tapered extruded section enables better control of the rate at which flux in the molten state flows out of the syringe outlet.
Drawings
FIG. 1 is a general schematic view of an embodiment 1 of the apparatus for making a cored electrode of the present invention;
FIG. 2 is a schematic view of the construction of the injection device in example 1 of the cored electrode manufacturing apparatus of the present invention;
FIG. 3 is a schematic view of the construction of the screw of example 1 of the apparatus for manufacturing a cored electrode of the present invention;
FIG. 4 is a schematic diagram of the construction of the injection device in example 8 of the cored electrode manufacturing apparatus of the present invention.
Description of reference numerals: 1. an unwinding device; 2. a crimping device; 3. an injection device; 4. a sealing device; 5. a cleaning device; 6. a wire drawing device; 7. a cutting device; 8. flux cored electrodes; 801. brazing filler metal sheath; 802. soldering flux; 9. a brazing flux containing groove; 10. a flux container; 11. an injection tube; 12. a screw; 13. an induction heating device; 14. an induction coil; 15. a vibrator; 16. a recycling bin; 17. a container inlet; 18. a container outlet; 19. an injection tube inlet; 20. an injection tube outlet; 21. a screw conveyor; 22. a spiral channel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is to be noted that, in the embodiments of the present invention, relational terms such as "first" and "second", and the like, which may be present in the embodiments, are only used for distinguishing one entity or operation from another entity or operation, and do not necessarily require or imply that such actual relationships or orders between the entities or operations exist. Also, terms such as "comprises," "comprising," or any other variation thereof, which may be present, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the appearances of the phrase "comprising an … …" or similar limitation may be present without necessarily excluding the presence of additional identical elements in the process, method, article, or apparatus that comprises the same elements.
In the description of the present invention, unless otherwise explicitly specified or limited, terms such as "mounted," "connected," and "connected" that may be present are to be construed broadly, e.g., as a fixed connection, a releasable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the present invention, unless otherwise specifically stated or limited, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be detachable or non-detachable. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The present invention will be described in further detail with reference to examples.
Example 1 of the cored electrode manufacturing apparatus provided in the present invention:
the flux-cored welding rod 8 comprises a brazing flux 802 and a brazing filler metal sheath 801 wrapped outside the brazing flux 802, the brazing flux 802 is usually powder or particles comprising multiple metals, the brazing filler metal sheath 801 is usually manufactured by firstly melting alloy cast ingots formed by copper, silver and zinc according to a certain proportion, roughly turning the alloy cast ingots to remove oxide skin and annealing, then extruding the alloy cast ingots into brazing filler metal strips by using a horizontal extruder, and then rolling the brazing filler metal strips for multiple times to form brazing filler metal thin strips, wherein the brazing filler metal thin strips can be used as the brazing filler metal sheath 801 of the flux-cored welding rod 8.
After the brazing flux sheath 801 and the brazing flux 802 for preparing the flux-cored welding rod 8 are prepared, the flux-cored welding rod 8 can be prepared by using the flux-cored welding rod preparation equipment shown in fig. 1 to 3, the flux-cored welding rod preparation equipment comprises an unwinding device 1, a curling device 2, an injection device 3, a sealing device 4, a cleaning device 5, a wire drawing device 6 and a cutting device 7 from front to back, the unwinding device 1 unwinds and conveys the brazing flux sheath 801 from front to back, the curling device 2 winds the brazing flux sheath 801 into a U-shaped groove structure with a brazing flux containing groove 9, the injection device 3 heats and melts the brazing flux 802 to a molten state, and injects the brazing flux 802 in the molten state into the brazing flux containing groove 9 surrounded by the brazing flux sheath 801, the sealing device 4 surrounds the U-shaped brazing flux sheath into an O shape to seal the notch of the brazing flux containing groove 9, so as to obtain a rough product of the flux-cored welding rod 8, the cleaning device 5 cleans the overflowing brazing flux 802 adhered to the rough product of the flux-cored welding rod 8, the wire drawing device 6 draws the cleaned crude product of the flux-cored welding rod 8 into a crude product of the flux-cored welding rod 8 with a required diameter, and the cutting device 7 cuts the crude product of the flux-cored welding rod 8 after wire drawing into a finished product of the flux-cored welding rod 8 with a required size.
It should be noted that the unwinding device 1, the curling device 2, the sealing device 4, the drawing device 6, and the cutting device 7 are all common devices in the prior art, for example, the devices are disclosed in the chinese patent application publication No. CN103480988A mentioned in the background, and are not described herein again, and the injection device 3 and the cleaning device 5 are described below.
The injection device 3 comprises a flux container 10 for containing granular flux 802, a screw conveyor 21 and an injection pipe 11 positioned at the lower side of the flux container 10, in the embodiment, the screw conveyor 21 is a screw 12, the screw 12 comprises a rod body and a thread arranged on the rod body, and the thread surrounds the rod body to form a spiral channel 22 for conveying the flux 802. The injection device 3 further includes a conveying member driving mechanism for driving the screw 12 to rotate, and the conveying member driving mechanism is a motor (not shown) directly connected to the screw 12 for driving the screw 12 to rotate in the present embodiment, and may be a screw nut mechanism for driving the screw to rotate in other embodiments.
The flux container 10 has a container inlet 17 at an upper end of the flux container 10 for the introduction of the granular flux 802, and a container outlet 18 at a lower end of the flux container 10 for the discharge of the granular flux 802, the injection tube 11 has an injection tube inlet 19 at an upper end of the injection tube 11 and an injection tube outlet 20 at a lower end of the injection tube 11, and the container outlet 18 of the flux container 10 is disposed opposite to the injection inlet of the injection tube 11 so that the granular flux 802 is introduced into the injection tube 11 through the container outlet 18.
As shown in fig. 2, a screw 12 penetrates the flux container 10, and the screw 12 extends into the injection tube 11 through a container outlet 18 of the flux container 10, and the screw 12 is rotated by a motor, and the screw 12 transports flux 802 in the flux container 10 into the injection tube 11 by its rotation. It should be noted that the motor is controlled by the computer control system, so the rotational speed of the motor, and therefore the rotational speed of the screw 12, can be controlled by the computer control system, and finally the purpose of controlling the flux 802 to quantitatively enter the injection tube 11 is achieved by controlling the rotational speed of the screw 12. In this embodiment, flux container 10 is a flux hopper, so that container outlet 18 of flux container 10 is an inverted bell mouth, screw 12 is in clearance fit with the side wall of container outlet 18 at the lower end of flux container 10, and screw 12 is in clearance fit with the wall of injection tube inlet 19. The screw 12 is arranged to be in clearance fit with the side wall of the container outlet 18 and the wall of the injection tube inlet 19, so that the speed of the brazing flux 802 entering the injection tube 11 can be better controlled through the screw 12.
The injection device 3 further includes a heating device for heating and melting the brazing flux 802 in the injection tube 11. In this embodiment, the heating device is an induction heating device 13, the induction heating device 13 includes an induction coil 14 surrounding the outside of the injection tube 11, the injection tube 11 is heated to a high temperature by the electromagnetic field of the induction coil 14, and the flux 802 is heated and melted by the injection tube 11 to a molten state.
In this embodiment, the injection tube outlet 20 at the lower end of the injection tube 11 extends into the flux containing groove 9 surrounded by the brazing filler metal sheath 801, and the portion of the screw 12 extending into the injection tube 11 is rotated to push out the flux 802 in a molten state from the injection tube outlet 20 of the injection tube 11 and into the flux containing groove 9.
In addition, the screw 12 is coaxially arranged with the injection tube 11, and the injection tube 11 is integrally tapered, so that the lower tube section of the injection tube 11 is a tapered extruded tube section, and further, the injection tube outlet 20 at the lower end of the injection tube 11 is an inverted bell mouth, and the lower tube section of the injection tube 11 is a tapered extruded tube section, so that the speed of the flux 802 in the molten state entering the flux accommodating groove 9 can be better controlled by the screw 12.
In the present embodiment, the cleaning device 5 comprises a vibrator 15 and a recycling bin 16 arranged below the vibrator 15, the flux 802 adhered to the rough product of the cored electrode 8 falls into the recycling bin 16 under the action of the vibrator 15, and the flux 802 collected in the recycling bin 16 can be recycled.
In the present embodiment, the process parameters such as the rotation speed of the screw 12, the current of the induction heating device 13, the frequency of the induction heating device 13, the heating temperature of the injection tube 11, the vibration frequency of the vibrator 15, the wire drawing and wire feeding speed of the wire drawing device 6, etc. are all controlled by the computer control system.
The process of using the cored electrode manufacturing equipment of the invention to process the cored electrode 8 is as follows:
the brazing filler metal sheath 801 is uncoiled and conveyed from front to back through the uncoiling device 1, then the brazing filler metal sheath 801 is coiled into a U-shaped brazing filler metal sheath 801 with a brazing flux containing groove 9 through the edge curling device 2, the granular brazing flux 802 is heated and melted to be in a molten state through the injection device 3, the brazing flux 802 in the molten state is extruded out from an injection pipe outlet 20 of an injection pipe 11 under the rotation action of a screw 12 and is injected into the brazing flux containing groove 9 of the U-shaped brazing filler metal sheath 801, then the U-shaped brazing filler metal sheath 801 is coiled into an O shape under the action of the sealing device 4, the brazing flux 802 is wrapped in the brazing filler metal sheath 801, then a vibrator 15 of the cleaning device 5 vibrates and drops the brazing flux 802 (the brazing flux 802 overflowing when the adhered brazing flux 802 is sealed) adhered on the brazing filler metal sheath 801 into the recovery barrel 16 through vibration, a crude cored welding rod 8 is obtained, and the crude welding rod 8 is subjected to the wire drawing action of the wire drawing device 6, to obtain a crude product of the cored electrode 8 with the required diameter, and finally, the crude product of the cored electrode 8 is cut into a finished product of the cored electrode 8 with the required size by a cutting device 7, so that the processing process of the cored electrode 8 is completed.
In example 2 of the flux-cored welding rod manufacturing apparatus of the present invention, unlike example 1, the heating device includes an electric heating coil which surrounds the outside of the injection tube, and the electric heating coil heats itself under energization to heat the flux in the injection tube until the flux is heated and melted to a molten state.
The difference of the embodiment 3 of the flux-cored welding rod preparation equipment of the invention from the embodiment 1 is that the screw does not extend into the injection tube, the flux container is a container with the same upper and lower pipe diameters, the inner diameter of the flux container is larger than that of the injection tube, and the screw is in clearance fit with the container wall of the flux container.
The difference between example 4 of the cored electrode manufacturing apparatus of the present invention and example 1 is that the diameters of the upper and lower injection tubes are identical.
In example 5 of the cored electrode manufacturing apparatus of the present invention, unlike example 1, the cleaning device is an ultrasonic cleaning device, or in other examples, the cleaning device includes a brush and a motor that drives the brush to move in a circular motion, and the brush that moves in a circular motion cleans flux adhering to the outer surface of the brazing filler metal.
In embodiment 6 of the cored electrode manufacturing apparatus of the present invention, unlike embodiment 1, the screw conveyor includes a screw blade and a rotating shaft provided at an end of the screw blade, and the conveyor driving mechanism drives the screw blade to rotate by driving the rotating shaft to rotate.
The embodiment 7 of the flux-cored welding rod manufacturing equipment of the invention is different from the embodiment 1 in that an injection tube is obliquely arranged, the middle part of the injection tube is provided with an injection tube inlet which is vertically opposite to a container outlet of a soldering flux container, a screw rod extends into the injection tube from an upper end opening of the injection tube, the soldering flux flowing out of the container outlet of the soldering flux container enters the injection tube through the injection tube inlet, the soldering flux in the injection tube is heated to a molten state and then is conveyed to a lower end opening of the injection tube through the screw rod to be discharged, and the soldering flux enters a soldering flux accommodating groove surrounded by a brazing filler metal sheath.
Unlike example 1, example 8 of the cored electrode manufacturing apparatus of the present invention is that, as shown in fig. 4, a screw 12 is extended into a flux container 10 and is positioned outside an injection tube 11, the screw 12 transfers flux 802 in the flux container 10 into the injection tube 11 by rotation, and the flux 802 transferred into the injection tube 11 applies a pressure downward to extrude the flux 802 in a molten state from an injection tube outlet 20.
In the embodiment of the flux-cored welding rod manufacturing apparatus of the present invention, the structure of the flux-cored welding rod manufacturing apparatus is the same as that of the flux-cored welding rod manufacturing apparatus in any embodiment, and the detailed description thereof is omitted.
The flux-cored welding rod is prepared by the flux-cored welding rod preparation equipment, the flux is heated to a molten state, then the flux in the molten state is injected into a groove surrounded by a brazing filler metal sheath, and finally the notch of the brazing filler metal sheath is sealed, cleaned, drawn and cut to form the flux-cored welding rod. In other embodiments, the flux cored electrode may also use an existing melting device to melt the flux, such as by allowing the flux to drip by gravity into a flux receiving groove defined by the outer skin of the flux cored electrode.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. A preparation method of a flux-cored welding rod is characterized in that a soldering flux (802) is heated to a molten state, then the soldering flux (802) in the molten state is injected into a groove surrounded by a brazing filler metal sheath (801), and finally a notch of the brazing filler metal sheath (801) is sealed to form the flux-cored welding rod (8).
2. The brazing flux melting and injecting device is characterized by comprising a brazing flux container (10) for containing brazing flux (802), a spiral conveying piece (21) and an injection pipe (11) positioned on the lower side of the brazing flux container (10), wherein the injection pipe (11) is provided with an injection pipe inlet (19) and an injection pipe outlet (20), the brazing flux container (10) is provided with a container inlet (17) for allowing granular brazing flux (802) to enter and a container outlet (18) for discharging the granular brazing flux (802), and the injection pipe inlet (19) is communicated with the brazing flux container (10) for allowing the granular brazing flux (802) to enter the injection pipe (11); the spiral conveying piece (21) is provided with a spiral channel (22);
the spiral conveying piece (21) extends into the injection pipe (11) and/or the brazing flux container (10), the brazing flux melting and injecting device further comprises a conveying piece driving mechanism and a heating device, the heating device is used for heating and melting brazing flux (802) in the injection pipe (11), the conveying piece driving mechanism is used for driving the spiral conveying piece (21) to rotate, and the spiral conveying piece (21) exerts force on the brazing flux (802) through rotation to enable the brazing flux (802) to be conveyed to the injection pipe outlet (20) and extrude the molten brazing flux (802) out of the injection pipe outlet (20).
3. The flux-melting injection apparatus according to claim 2, wherein the screw conveyor (21) extends into the injection pipe (11) and is arranged coaxially with the injection pipe (11).
4. A flux-melting injection apparatus according to claim 3, characterized in that the screw (21) is in clearance fit with the wall of the injection tube inlet (19) of the injection tube (11).
5. A flux-melting pouring device according to claim 2, characterized in that the screw (21) extends into the flux container (10) and out of the injection tube (11), the screw (21) by rotating transfers flux (802) towards the injection tube (11) and applies pressure to the flux (802) in the injection tube (11).
6. The flux-melting injection apparatus according to claim 3 or 4, wherein the screw (21) penetrates the flux container (10) and the screw (21) protrudes through the container outlet (18) into the injection tube (11).
7. The flux-melting injection apparatus according to any one of claims 2-5, wherein the screw conveyor (21) is a screw (12).
8. A flux-melting injection apparatus according to any of claims 2-5, characterized in that the heating means is an induction heating means (13), the induction heating means (13) comprising an induction coil (14) surrounding the outside of the injection tube (11).
9. The flux-melting injection apparatus according to any one of claims 2-5, wherein the injection tube (11) comprises a tapered extruded tube section, the lower end opening of which constitutes the injection tube outlet (20).
10. Flux-cored electrode preparation equipment, including unwinding device (1) that is used for unreeling transport to brazing filler metal crust (801), be used for rolling up the hemming device (2) of groove-like structure with brazing filler metal crust (801), be used for pouring into soldering flux (802) into brazing flux holding tank (9) that brazing filler metal crust (801) encloses, be used for carrying out closing device (4) sealed to brazing flux holding tank (9), characterized by, flux-cored electrode preparation equipment still includes injection apparatus (3), injection apparatus (3) are any claim 2-9 the brazing flux melting injection apparatus.
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| CN202210021902.8A CN114211155A (en) | 2022-01-10 | 2022-01-10 | Brazing flux melting injection device, and preparation method and preparation equipment of flux-cored welding rod |
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| CN202210021902.8A CN114211155A (en) | 2022-01-10 | 2022-01-10 | Brazing flux melting injection device, and preparation method and preparation equipment of flux-cored welding rod |
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| CN115647656A (en) * | 2022-10-27 | 2023-01-31 | 郑州机械研究所有限公司 | Flux-cored solder preparation device and flux-cored solder preparation method |
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