CN110271181B - Fused deposition 3D prints and uses wire rod connector subassembly - Google Patents
Fused deposition 3D prints and uses wire rod connector subassembly Download PDFInfo
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- CN110271181B CN110271181B CN201810212097.0A CN201810212097A CN110271181B CN 110271181 B CN110271181 B CN 110271181B CN 201810212097 A CN201810212097 A CN 201810212097A CN 110271181 B CN110271181 B CN 110271181B
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- 230000008021 deposition Effects 0.000 title claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000010146 3D printing Methods 0.000 claims abstract description 14
- 230000001681 protective effect Effects 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 16
- 210000001503 joint Anatomy 0.000 abstract description 15
- 238000007639 printing Methods 0.000 abstract description 15
- 238000004806 packaging method and process Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 238000011960 computer-aided design Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920005669 high impact polystyrene Polymers 0.000 description 2
- 239000004797 high-impact polystyrene Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229920000747 poly(lactic acid) Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000004626 polylactic acid Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920001893 acrylonitrile styrene Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
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- 238000000429 assembly Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 229920001778 nylon Polymers 0.000 description 1
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- 229920003023 plastic Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
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- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/69—General aspects of joining filaments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
- B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
- B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
- B29C66/91413—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account the parts to be joined having different temperatures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
Abstract
The invention discloses a wire rod connector assembly for fused deposition 3D printing, which comprises a connector inner sleeve and a heater; the connector inner sleeve comprises a second fixing part, a third fixing part, a fourth fixing part and a first fixing part provided with a limit groove; the first fixing part and the second fixing part are spliced and fixed together to form a first channel; the third fixing part and the fourth fixing part are spliced and fixed together to form a second channel; the first fixing part is connected with the third fixing part, and the second fixing part is connected with the fourth fixing part; the heater is similar to a vice, and the inner side of the vice head is provided with a plane-shaped notch and a semicircular notch; the planar notch is consistent with the limit groove in size, and the PTC heating plate is additionally arranged on the back surface of the planar notch; the size of the semicircular notch is consistent with that of the second fixing part. The invention can realize the integrated packaging and connecting process of the FDM wires, the butt joint of the wires is smooth, and the integrated packaging and connecting process can be directly used for printing without post-treatment.
Description
Technical Field
The invention relates to a wire rod connector assembly for fused deposition 3D printing, and belongs to the field of FDM (fused deposition modeling) 3D printing.
Background
3D printing technology, also known as AM (additive manufacturing), has been widely used in the fields of scientific research, industrial production, and high-precision tip processing. The basic process of the technology is as follows: designing a CAD (computer aided design) model in advance, and discretizing the CAD model by using a 3D printing control system (computer) to obtain a group of two-dimensional data information corresponding to the three-dimensional model; and then driving a 3D printer by using the two-dimensional data information, and finally obtaining the complete three-dimensional entity in a stacking mode. FDM printing technology belongs to the general class of extrusion type 3D printing technology, and is a common and widely used 3D printing technology. The technology is generally to convey thermoplastic strands through a wire feed system to an extrusion nozzle, heat the strands to a semi-molten state in the nozzle, and then extrude and build a three-dimensional body on a work platform.
The thermoplastic wires currently mainstream in the market include: PLA (polylactic acid), ABS (acrylonitrile-styrene plastic), PC (polycarbonate), HIPS (high impact polystyrene), PA (nylon) and the like, also include a portion of functionalized strands for special purposes. The major diameters of the wires were 1.75mm and 3.00mm, matching the common FDM printing system.
FDM printing is widely used in the fields of molds, artwork models, mechanical parts and the like, but has a low forming speed and high wire consumption, so that the FDM printing faces a great challenge in the construction process of large-sized objects. In addition, FDM multi-material printing is also becoming a market demand, but current FDM is mainly single-jet and dual-jet, and there is a certain difficulty in meeting multi-material printing. The key to solve the problems is that the FDM wires can be simply and flexibly butted. A common solution is to cut the wire ends directly flat, join them by direct heat or glue bonding, and then cut and buff them with a blade or sandpaper to accommodate the FDM extrusion head. The method is inconvenient to operate, the quality of the butt joint of the wires is poor, the wires are easy to break, and the quality of a printed product is affected. At present, some tools for FDM wire butt joint, such as a heating clamp similar to a vice, are reported to be capable of realizing wire butt joint, but the operation is inconvenient, the process is complicated, and the butt joint of the final wire still needs polishing treatment. Patent cn201610488811.X discloses a FDM 3D printer consumable connection device and method of use thereof. The invention specifically comprises a first detachable fixing part and a second detachable fixing part, wherein the first detachable fixing part and the second detachable fixing part are spliced and fixed together to form a first channel and a second channel which can be used for a 3D printing wire to pass through, and a working area which can be used for heating the butt joint end of the wire is arranged between the first channel and the second channel. Although the invention can realize better wire connection, the wire butt joint is heated under the condition of exposure, open fire or other heating modes are adopted until the wire is melted, and finally the wire is manually pushed into a corresponding channel for cooling, and the butt joint wire is slightly trimmed to a proper size for FDM printing in the later period. The whole operation process is complicated, and the tool matched with the FDM printer is inconvenient to use, and the heating mode of open fire enables the FDM printer to have potential safety hazards in the use process. In addition, the melting temperatures of different materials are different, so that the method is limited to realize the butt joint of different wires.
To sum up, the integrated and tooled FDM wire connecting device is urgently needed at present, is easy and convenient to operate and high in safety, can meet various wire connecting requirements, and is suitable for popularization and application to markets.
Disclosure of Invention
The invention aims to provide a wire connector assembly for fused deposition 3D printing.
The connector assembly is an integrally packaged FDM wire connecting device, has the working characteristics of simple operation, safety and reliability, can quickly and efficiently realize the butt joint of different wires, can be customized to be 1.75mm and 3.00mm, and can simply realize the connection of main stream FDM wires in the current market through the replacement of the inner sleeve of the connector. The invention can be popularized and applied to the market as a tool type product.
A wire connector assembly for fused deposition 3D printing, characterized in that the connector assembly comprises a connector inner sleeve and a heater; the connector inner sleeve comprises a first fixing part, a second fixing part, a third fixing part and a fourth fixing part which are provided with limit grooves; the first fixing part and the second fixing part are spliced and fixed together to form a first channel, and two wires to be butted are integrally packaged; the third fixing part and the fourth fixing part are spliced and fixed together to form a second channel, the diameter of the channel is slightly smaller than that of the wire, and the wire is clamped after the third fixing part and the fourth fixing part are spliced and closed; the first fixing part and the third fixing part are connected in a combined way through a spring screw rod, and the second fixing part and the fourth fixing part are connected in a combined way through a spring screw rod; the heater is similar to a vice, and a plane type notch and a semicircular notch are arranged on the inner side of the clamp head; the size of the planar notch is consistent with that of the limit groove of the first fixing part, a PTC (positive temperature coefficient) heating plate is additionally arranged on the back of the planar notch, and the limit groove is a heating working area; the size of the semicircular notch is consistent with the outer size of the second fixing part.
The first fixing part and the second fixing part are in mirror symmetry structures, and the third fixing part and the fourth fixing part are in mirror symmetry structures.
Four connecting holes, a fixing hole which is connected with the penetrating connecting hole arranged on the third fixing part through a spring screw rod combination and a first chute are arranged on the first fixing part; the second fixing part is provided with a second chute spliced with the first chute to form a first channel, and a fixing hole connected with a through connecting hole arranged on the fourth fixing part through a spring screw rod combination; the four connecting holes arranged on the first fixing part are connected with the four fixing holes of the second fixing part through four screws; the third fixing part is provided with a third sliding groove and two connecting holes; the fourth fixing part is provided with a fourth chute spliced with the third chute to form a second channel; the two connecting holes arranged on the third fixing part are connected with the two fixing holes of the fourth fixing part through two screws.
The cross sections of the first chute, the second chute, the third chute and the fourth chute of the connector inner sleeve are all semicircular.
The cross sections of the first channel and the second channel are circular. The diameter of the first channel was 1.75mm or 3.00mm (designed for both wire sizes). The diameter of the second channel is 1.70mm or 2.95mm, the diameter of the second channel is slightly smaller than the diameter of the wire, and the wire can be clamped after the third fixing part and the fourth fixing part are spliced and closed.
The tail ends of the two wires are butted at the middle part of the first channel, and the positions of the tail ends of the two wires correspond to the middle part of the first fixing part limiting groove of the inner sleeve of the connector.
All the connecting holes are straight holes without internal threads; all the fixing holes are internal threaded holes.
All parts of the inner sleeve of the connector are made of stainless steel, wires after being heated and fused are not bonded with the surface of the first channel, the surface smoothness of the wires is guaranteed to be good, the inner sleeve can be directly used for FDM printing, and polishing and cutting post-treatment is not needed at the joint of the wires. In addition, stainless steel has good wear resistance and long service life of the inner sleeve of the connector.
The heater is made of carbon steel; the handle is additionally provided with a heat insulation protective sleeve which is made of polytetrafluoroethylene.
The PTC heating sheet is encapsulated by high temperature resistant epoxy resin.
The planar notch of the heater is consistent with the limit groove of the first fixing part in size, so that fixed-point heating at the joint of two wires is realized, and the wire joint quality is improved; the size of the semicircular notch is consistent with the outer size of the second fixing part, so that the clamping stability is ensured.
According to the invention, external force is applied and unloaded to the wire rod butt joint direction by adjusting the tightness degree of the spring screw rod combination, so that the thrust applied to the wire rod by manual external force under the high temperature condition is avoided, the safety is ensured, and the part does not need to be disassembled after the installation is finished.
When the wire rod connector assembly for fused deposition 3D printing works, the method comprises the following steps of:
(1) Two wires to be butted are packaged in a first channel;
(2) The second channel clamps the wire rod at one side of the outside, and the spring screw rod combination is adjusted to apply certain external force to the wire rod;
(3) Clamping the heater in a limit groove of the inner sleeve of the connector, heating for about 20 seconds, and removing the heater to naturally cool the inner sleeve of the connector to room temperature;
(4) Unscrewing the screws (three) on one side of the inner sleeve of the connector and opening the screws (3) on the other side, the fixing part can be separated, and the connected FDM wires can be taken down and directly used for FDM printing.
The heater is similar to a vice, a PTC heating plate is designed and installed at the position of the vice head, the heating plate is controlled by a temperature control circuit, the control of multiple temperature areas can be realized, and the constant-temperature heating of different temperature areas can be realized within the range of 100-200 ℃. The gap of the heater at the jaw is matched with the heating working area of the inner sleeve of the connector, so that the wire can be locally and fixedly heated at the butt joint position.
The first chute and the second chute are spliced to form a first channel, the cross section of the channel is in a closed circular shape, and the diameter of the channel is consistent with the diameter of the FDM wire; the third chute and the fourth chute are spliced to form a second channel, the cross section of the channel is in a closed circular shape, the diameter of the channel is slightly smaller than that of the FDM wire, and after the third fixing part and the fourth fixing part are spliced and closed, the fixing part has a certain clamping effect on the wire.
Compared with the existing FDM wire connecting method and device, the method has the advantages that: the invention can realize the integrated packaging and connecting process of the FDM wires, has simple and convenient operation, high safety and smooth wire butt joint, can be directly used for printing without post-treatment, can meet the connecting requirements of wires with different melting temperatures, and can be used as a matched tool of an FDM printer. The invention fills the blank in the field of FDM wire wiring devices and widens the application of FDM printing technology.
Drawings
Fig. 1 is a schematic diagram of a fused deposition 3D printing connector assembly according to the present invention.
Fig. 2 is an exploded schematic view of the structure of the inner housing of the connector according to the present invention.
Fig. 3 is a schematic view of the structure of the inner housing of the connector according to the present invention.
Fig. 4 is a schematic structural view of the heater according to the present invention.
Detailed Description
As shown in fig. 1, a fused deposition 3D printing wire connector assembly, bao Jiexian in-can i and heater ii. As shown in fig. 2, the first fixing part 1 and the second fixing part 2 of the inner sleeve i of the connector are detachably connected through four screws 5, 6, 7 and 8, and the first fixing part 1 and the second fixing part 2 are spliced to form a first channel through which an FDM wire can pass; the third fixing part 3 and the fourth fixing part 4 of the connector inner sleeve I are detachably connected through two screws 9 and 10, the third fixing part 3 and the fourth fixing part 4 are spliced to form a second channel for the FDM wire to pass through, the diameter of the channel is slightly smaller than that of the wire, and the wire is clamped after the fixing parts are closed; the two spring-loaded screws 11, 12 pass through the connecting hole 3-4 of the third fixing part 3 and the connecting hole 4-4 of the fourth fixing part 4, and are respectively connected with the fixing hole 1-7 of the first fixing part 1 and the fixing hole 2-6 of the second fixing part 2, so as to be detachably connected. The first fixing part 1 and the second fixing part 2 are used for integrally packaging the wire rod, the third fixing part 3 and the fourth fixing part 4 are matched with the two spring screw rod combinations 11 and 12 to apply external force to the direction of the wire rod butt joint, and the external force is applied instead of manual loading. The heater II is directly clamped in the limit groove 1-1 of the heating working area of the inner sleeve I of the connector, so that the wire butt joint part is heated and melted, and then the wire connection is completed through natural cooling.
The first fixing part 1 is provided with a limiting groove 1-1, and the limiting groove 1-1 is a heating working area; four connecting holes 1-2, 1-3, 1-4 and 1-5 are arranged, a first chute 1-6 with a semicircular cross section is arranged, and a fixing hole 1-7 is arranged.
The second fixing part 2 is provided with five fixing holes 2-1, 2-2, 2-3, 2-4 and 2-6, and is provided with a second chute 2-5 with a semicircular cross section.
The third fixing part 3 is provided with a third chute 3-1, two connecting holes 3-2 and 3-3, and a connecting hole 3-4 penetrating.
The fourth fixing part 4 is provided with a fourth chute 4-1, two fixing holes 4-2 and 4-3, and a connecting hole 4-4 penetrating.
The first chute 1-6 and the second chute 2-5 are spliced to form a first channel, and the third chute 3-1 and the fourth chute 4-1 are spliced to form a second channel; the cross sections of the first channel and the second channel are circular.
The limiting groove 1-1 on the first fixing part 1 is a heating working area, the tail ends of the two wires are butted in the middle of the first channel, and the positions of the two wires are correspondingly arranged in the middle of the limiting groove 1-1.
The spring screw combination 11 passes through the connecting holes 3-4 and the fixing holes 1-7 to realize detachable connection; the spring screw assembly 12 is detachably connected through the connecting hole 4-4 and the fixing hole 2-6.
All the fixing holes 1-7,2-1, 2-2, 2-3, 2-4, 2-6, 4-2 and 4-3 are internal threaded holes and are matched with corresponding screws for use. The screws 5, 6, 7, 8, 9 and 10 are standard components with corresponding specifications. All of the connection holes 1-2, 1-3, 1-4, 1-5, 3-2, 3-3, 3-4 and 4-4 are straight holes without internal threads.
All parts of the inner housing I of the connector are stainless steel.
The first fixing part 1 and the second fixing part 2 are in mirror symmetry, and the third fixing part 3 and the fourth fixing part 4 are in mirror symmetry.
The splice of the connector inner housing is shown in fig. 3.
As shown in fig. 4, the heater ii is similar to a vice. A planar notch 13-1 is arranged on the inner side of the handle clamp head 13 at one side, a PTC heating sheet 16 is additionally arranged on the back surface of the planar notch 13-1, and the PTC heating sheet is encapsulated by high-temperature-resistant epoxy resin. The inner side of the other side handle clamp head 14 is provided with a semicircular notch 14-1. The planar notch 13-1 is consistent with the limit groove 1-1 of the first fixing part 1 in size, so that fixed-point heating of the joint of two wires is realized, and the joint quality of the wires is improved; the size of the semicircular notch 14-1 is consistent with that of the second fixing part 2, so that the clamping stability is ensured.
The heater is made of common carbon steel, a heat insulation protective sleeve 15 is additionally arranged on the handles 13 and 14, and the protective sleeve 15 is made of polytetrafluoroethylene.
When the FDM wire connector assembly works, two wires to be butted are packaged in the first channel of the inner sleeve I of the wire connector according to the installation sequence, then the spring screw rod assemblies 11 and 12 are adjusted to apply certain external force to the wires at one side, the combination effect is enhanced when the wires are heated and melted, and the wire connection quality is improved. Then the heater II is clamped in the limit groove 1-1 of the inner sleeve I of the connector and heated for about 20 seconds, and the heater II is removed, so that the inner sleeve I of the connector is naturally cooled and shaped to the room temperature. And then unscrewing the screw rods (3) on one side of the inner sleeve I of the connector, opening the screw rods (3) on the other side, and separating the fixing part, and taking down the connected FDM wires to be directly used for FDM printing.
The invention fills the blank in the technical field. The assembly can conveniently and rapidly realize connection among different FDM wires, the wires are integrally packaged in the connection process, the diameter of a channel is consistent with that of the wires, the connected wires can be directly used for FDM printing, no polishing and cutting treatment is needed, and the whole process is safe and reliable. In addition, the temperature control circuit of the heater can realize heating at different temperatures, and the connection of thermoplastic wires with different melting temperatures is possible. The invention provides the possibility for printing large-size objects and various materials by using the FDM technology.
Claims (7)
1. A wire connector assembly for fused deposition 3D printing, characterized in that the connector assembly comprises a connector inner sleeve (i) and a heater (ii); the connector inner sleeve (I) comprises a second fixing part (2), a third fixing part (3), a fourth fixing part (4) and a first fixing part (1) provided with a limit groove (1-1); the first fixing part (1) and the second fixing part (2) are spliced and fixed together to form a first channel, and two wires to be butted are integrally packaged; the third fixing part (3) and the fourth fixing part (4) are spliced and fixed together to form a second channel, the diameter of the second channel is slightly smaller than that of the wire, and the wire is clamped after the splicing and the closing; the first fixing part (1) is connected with the third fixing part (3), and the second fixing part (2) is connected with the fourth fixing part (4); the heater (II) is similar to a vice, and a plane-shaped notch (13-1) and a semicircular notch (14-1) are arranged on the inner side of the clamp head; the planar notch (13-1) on the heater (II) is consistent with the limit groove (1-1) of the first fixing part (1) on the inner sleeve (I) of the connector in size, the PTC heating plate is additionally arranged on the back of the heater, and the limit groove (1-1) is a heating working area; the size of the semicircular notch (14-1) is consistent with the outer size of the second fixing part (2); the first fixing part (1) and the second fixing part (2) of the connector inner sleeve (I) are in mirror symmetry structures, and the third fixing part (3) and the fourth fixing part (4) are in mirror symmetry structures; four connecting holes (1-2, 1-3, 1-4, 1-5) and a first sliding groove (1-6) are formed in a first fixing part (1) of the connector inner sleeve (I); the through connection holes (3-4) arranged on the third fixing part (3) are connected with the fixing holes (1-7) on the first fixing part (1) through the spring screw combination (11); the second fixing part (2) is provided with a second chute (2-5) spliced with the first chute (1-6) to form a first channel; the through connection hole (4-4) arranged on the fourth fixing part (4) is connected with the fixing hole (2-6) on the second fixing part (2) through the spring screw combination (12); the four connecting holes (1-2, 1-3, 1-4, 1-5) arranged on the first fixing part (1) are connected with the four fixing holes (2-1, 2-2, 2-3, 2-4) of the second fixing part (2) through four screws (5, 6, 7, 8); the third fixing part (3) is provided with a third sliding groove (3-1) and two connecting holes (3-2, 3-3); a fourth chute (4-1) spliced with the third chute (3-1) to form a second channel is arranged on the fourth fixing part (4); the connecting holes (3-2, 3-3) arranged on the third fixing part (3) are connected with the two fixing holes (4-2, 4-3) on the fourth fixing part (4) through two screws (9, 10); the tail ends of the two wires are butted at the middle part of the first channel, and the positions of the tail ends of the two wires correspond to the middle part of a limiting groove (1-1) of a first fixing part (1) of the inner sleeve (I) of the connector.
2. Wire connector assembly according to claim 1, characterized in that the cross section of the first runner (1-6), the second runner (2-5), the third runner (3-1) and the fourth runner (4-1) of the connector inner sleeve (i) is semicircular.
3. The wire connector assembly of claim 1 wherein the first and second passages of the connector inner housing (i) are circular in cross-section.
4. The wire connector assembly of claim 1, wherein all of the connection holes (1-2, 1-3, 1-4, 1-5, 3-2, 3-3, 3-4, 4-4) are straight holes without internal threads; all the fixing holes (1-7, 2-1, 2-2, 2-3, 2-4,4-2, 4-3, 2-6) are internal threaded holes.
5. Wire connector assembly according to claim 1, characterized in that all parts of the inner connector housing (i) are stainless steel.
6. The wire connector assembly of claim 1 wherein said heater (ii) is carbon steel; the handles (13, 14) are additionally provided with heat insulation protective sleeves (15), and the protective sleeves (15) are made of polytetrafluoroethylene.
7. The wire connector assembly of claim 1 wherein said PTC heating sheet (16) is encapsulated with a high temperature epoxy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810212097.0A CN110271181B (en) | 2018-03-15 | 2018-03-15 | Fused deposition 3D prints and uses wire rod connector subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810212097.0A CN110271181B (en) | 2018-03-15 | 2018-03-15 | Fused deposition 3D prints and uses wire rod connector subassembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110271181A CN110271181A (en) | 2019-09-24 |
| CN110271181B true CN110271181B (en) | 2024-02-27 |
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| CN201810212097.0A Active CN110271181B (en) | 2018-03-15 | 2018-03-15 | Fused deposition 3D prints and uses wire rod connector subassembly |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| US9149988B2 (en) * | 2013-03-22 | 2015-10-06 | Markforged, Inc. | Three dimensional printing |
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| CN110271181A (en) | 2019-09-24 |
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