CN215550989U

CN215550989U - Double-connecting-rod transmission solid 3D printing material delivery forming device

Info

Publication number: CN215550989U
Application number: CN202122109847.1U
Authority: CN
Inventors: 胡吉
Original assignee: Shanghai Boshu Composite Material Technology Co ltd
Current assignee: Shanghai Boshu Composite Material Technology Co ltd
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2022-01-18
Anticipated expiration: 2031-09-02

Abstract

The utility model relates to the technical field of 3D printing, in particular to a double-connecting-rod transmission solid 3D printing material delivery forming device which comprises a printing head, a near-end feeding device arranged in the printing head, a printing material cutting device, a continuous fiber consumable material guide channel, a heating device and a heat insulation device.

Description

Double-connecting-rod transmission solid 3D printing material delivery forming device

Technical Field

The utility model relates to the technical field of 3D printing, in particular to a double-connecting-rod transmission solid 3D printing material delivery forming device.

Background

The raw materials that polymer plastic 3D printed are mainly thermoplastic resin, and the part intensity of printing the product is not high, has not satisfied actual demand. In order to improve the mechanical properties of 3D printed materials, the use of high-strength printing materials such as Polyetheretherketone (PEEK), Polyetherketoneketone (PEKK), and thermoplastic resins such as epoxy resins and modified materials thereof as base materials for printing has been proposed. On the other hand, 3D printing technology for improving mechanical properties of materials by adding high-strength fibers into a printing matrix is proposed and conducted with practical research, and such printing technology using fibers and matrix materials in composite is becoming the future development direction of the industry.

Fiber-reinforced composites are further classified into short fiber-reinforced composites, long fiber-reinforced composites and continuous fiber-reinforced composites according to the length of the fiber. The fiber length in the short fiber reinforced composite material is less than 1mm, the fiber length in the long fiber reinforced composite material is more than 1mm but not more than 10mm, and the fiber length in the continuous fiber reinforced composite material can be dozens of centimeters to dozens of meters according to the size of the molding volume. The mechanical properties of these three materials also increase with increasing fiber length. On the other hand, the short fiber reinforced composite material can be printed by using an old 3D printing extrusion head, and long fiber and continuous fiber materials need to be additionally provided with a shearing device, so that the printing material can be switched at different positions.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a double-connecting-rod transmission solid 3D printing material delivery forming device.

In order to achieve the purpose, the utility model provides the following technical scheme: a double-link transmission solid 3D printing material delivery forming device comprises a printing head, a near-end feeding device, a printing material cutting device, a continuous fiber consumable guiding channel, a heating device and a heat insulation device, wherein the near-end feeding device, the printing material cutting device, the continuous fiber consumable guiding channel, the heating device and the heat insulation device are arranged in the printing head, the near-end feeding device comprises an upper feeding gear set and a lower feeding gear set which are arranged in the printing head, and a motor used for driving the feeding gear sets, a connecting rod is arranged between the two feeding gear sets, the two feeding gear sets are linked through the connecting rod, the motor is arranged on the printing head, a first driving gear is arranged on a rotating shaft of the motor, the first driving gear is in linkage fit with one of the gear sets, the continuous fiber consumable guiding channel is arranged in the printing head and vertically arranged between the two gear sets, the printing material cutting device comprises a steering engine, a cutter and a second driving gear, the cutter is an arc-shaped cutter with gear teeth arranged on one side, the utility model discloses a continuous fiber consumable material guide channel, including printer head, cutter, drive gear two, heater, cutter, drive gear two, heater sets up in the lower part discharge gate department of printer head, the heat-proof device cover is established at printer head outside, and the cutter is kept away from one side of gear tooth and is connected in the rotation of axle in the cavity, and the cutting edge department of cutter sets up corresponding to continuous fiber consumable material guide channel department, the steering wheel is installed on the printer head, and drive gear two installs in the pivot of steering wheel, and drive gear two corresponds gear tooth department linkage cooperation setting of cutter, heater sets up in the lower part discharge gate department of printer head, the heat-proof device cover is established at printer head outside.

Preferably, the gear set comprises two linkage gears and two feeding gears, each linkage gear is coaxially overlapped with one feeding gear, the two linkage gears are meshed with each other, the two feeding gears are matched with each other to form a gear feeding mechanism, a connecting shaft is arranged at the center of each pair of linkage gears and the feeding gears, an eccentric shaft is arranged at one end of each connecting shaft, the connecting rods are provided with two connecting rods, and two ends of each connecting rod are respectively in shaft connection and matching with the corresponding eccentric shafts of the upper and lower gear sets.

Preferably, the eccentric shafts on the two connecting rods are arranged at a 90-degree difference.

Preferably, the heating device comprises an electric heating block and a nozzle, the nozzle is arranged on a lower discharge port of the printing head, and the electric heating block is installed on the nozzle.

Preferably, the heat insulation device is a heat insulation shell, and the heat insulation shell is sleeved outside the printing head.

Compared with the prior art, the utility model has the beneficial effects that: through the cooperation of material feeding unit, cutting device and heating device, can realize that continuous fibers reinforcing combined material 3D prints and prints the cutting off of fibre in the complicated structure piece process.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic view of the upper and lower gear sets of the present invention in combination;

FIG. 4 is a view of the construction of the linkage gear and feed gear of the present invention;

FIG. 5 is a schematic view of the cutting apparatus of the present invention;

FIG. 6 is a horizontal cross-sectional view at the cutting knife of the present invention;

fig. 7 is a schematic view of the structure of the nozzle of the present invention.

In the figure: 1. a print head; 2. a feed gear set; 3. a linkage gear; 4. a feed gear; 5. a connecting shaft; 6. an eccentric shaft; 7. a connecting rod; 8. a motor; 9. driving a gear I; 10. a steering engine; 11. driving a gear II; 12. a cutter; 13. a thermally insulated housing; 14. an electrical heating block; 15. a nozzle; 16. and (4) a guide channel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1 to 7, the present invention provides a technical solution: a double-link transmission solid 3D printing material delivery forming device comprises a printing head 1, a near-end feeding device, a printing material cutting device, a continuous fiber consumable guiding channel 16, a heating device and a heat insulation device, wherein the near-end feeding device, the printing material cutting device, the continuous fiber consumable guiding channel 16, the heating device and the heat insulation device are arranged in the printing head 1, the near-end feeding device comprises an upper feeding gear set 2 and a lower feeding gear set 2 which are arranged in the printing head 1 and a stepping motor 8 which is used for driving the feeding gear sets 2, a connecting rod 7 is arranged between the two feeding gear sets 2, the two feeding gear sets are linked through the connecting rod 7, the stepping motor 8 is arranged on the printing head 1, a first driving gear 9 is arranged on a rotating shaft of the stepping motor 8, the first driving gear 9 is in linkage fit with one of the gear sets, the continuous fiber consumable guiding channel 16 is arranged in the printing head 1 corresponding to the vertical arrangement between the two gear sets, and the feeding device is composed of the upper feeding gear set and the lower feeding gear sets 2, the upper group of gears are responsible for conveying the continuous fiber consumables to the cutting device, and the lower group of gears are responsible for conveying the consumables below the cutting device to the spray head heating device;

the printing material cutting device comprises a steering engine 10, a cutter 12 and a second driving gear 11, wherein the cutter 12 is an arc-shaped cutter 12 with gear teeth arranged on one side, a cavity is horizontally arranged in the printing head 1 corresponding to a continuous fiber consumable material guide channel 16, the cutter 12 is arranged in the cavity, one side, away from the gear teeth, of the cutter 12 is rotatably connected in the cavity, a cutting edge of the cutter 12 is arranged in the position corresponding to the continuous fiber consumable material guide channel 16, the steering engine 10 is arranged on the printing head 1, the second driving gear 11 is arranged on a rotating shaft of the steering engine 10, the second driving gear 11 is arranged in a linkage matched mode corresponding to the gear teeth of the cutter 12, and a mechanism consisting of the steering engine 10, the gear and the cutter 12 can control the opening and closing movement of the cutter 12 by controlling the rotation angle of the steering engine 10 so as to cut off the printing material; the printing material guide channel 16 is arranged between the upper feeding gear 4 and the lower feeding gear 4 and between the cutting device and the cutting device, so that the consumable materials can be accurately conveyed to the target positions of the cutter 12 and the gears.

The heating device is arranged at a discharge port at the lower part of the printing head 1, and the heat insulation device is covered outside the printing head 1.

The gear set comprises two linkage gears 3 and two feeding gears 4, each linkage gear 3 is coaxially overlapped with one feeding gear 4, the two linkage gears 3 are meshed with each other, the two feeding gears 4 are matched with each other to form a gear feeding mechanism, a connecting shaft 5 is arranged at the shaft center of each pair of linkage gears 3 and feeding gears 4, the linkage gears 3 and the feeding gears 4 are rotatably arranged in the printing head 1 through the connecting shaft 5, one end of the connecting shaft 5 is provided with an eccentric shaft 6, two ends of a connecting rod 7 are respectively provided with a lantern ring which is rotatably matched with the eccentric shaft 6 through the lantern ring, simultaneously, the upper and lower groups of gear sets are mutually matched through the connecting rod 7, the connecting rod 7 is provided with two pieces, two ends of each connecting rod 7 are respectively and correspondingly and respectively connected with the eccentric shafts 6 of the upper and lower groups of gear sets and are matched with each other through the connecting rod 7, so that when one linkage gear 3 rotates, the corresponding linkage gear 3 of the other group of gear sets can be synchronously driven to rotate through the connecting rod 7, meanwhile, the mutually meshed linkage gears 3 can synchronously rotate, and the double-connecting-rod 7 mechanism can more stably form synchronous linkage between the upper gear set and the lower gear set.

The eccentric shafts 6 on the two connecting rods 7 are arranged with a 90-degree difference, the driving motor 8 is loaded on the upper gear, the connecting rods 7 drive the lower gear to synchronously rotate, and the dead point of the connecting rod 7 mechanism can be overcome by the double-connecting-rod 7 structure with a 90-degree difference.

The heating device comprises an electric heating block 14 and a nozzle 15, the nozzle 15 is arranged on a discharge hole at the lower part of the printing head 1, the electric heating block 14 is installed on the nozzle 15, meanwhile, the electric heating block 14 can also be composed of a thermocouple, a heating rod and a heating block, and a printing material is heated, melted and extruded in the heating part to be molded, so that the printing function is completed.

The heat insulation device is a heat insulation shell 13, the shell 13 is processed by high-temperature-resistant heat insulation materials such as Teflon or synthetic stone, the heat insulation shell 13 is sleeved outside the printing head 1, the high temperature at the nozzle 15 in the working process of the printing head 1 is prevented from influencing the inside of the printing head 1 through the heat insulation shell 13, and the internal temperature of the printing head 1 is kept at a stable working temperature.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a forming device is delivered to two connecting rod transmission solid 3D printing material which characterized in that: the printing material cutting device comprises a printing head, a near-end feeding device, a printing material cutting device, a continuous fiber consumable guiding channel, a heating device and a heat insulation device, wherein the near-end feeding device is arranged in the printing head and comprises an upper feeding gear set, a lower feeding gear set and a motor for driving the feeding gear sets, the upper feeding gear set and the lower feeding gear set are arranged in the printing head, a connecting rod is arranged between the two feeding gear sets, the two feeding gear sets are linked through the connecting rod, the motor is arranged on the printing head, a first driving gear is arranged on a rotating shaft of the motor and is in linkage fit with one of the gear sets, the continuous fiber consumable guiding channel is arranged in the printing head and corresponds to the vertical arrangement between the two gear sets, the printing material cutting device comprises a steering engine, a cutter and a second driving gear, the cutter is an arc-shaped cutter with gear teeth arranged on one side, a cavity is horizontally arranged in the printing head corresponding to the continuous fiber consumable guiding channel, the cutter sets up in the cavity, and the cutter keeps away from one side of gear tooth and rotates the connection in the cavity, and the cutting edge department of cutter sets up corresponding to continuous fibers consumptive material guide way department, the steering wheel is installed on the printing head, and drive gear two is installed in the pivot of steering wheel, and drive gear two is located the linkage cooperation setting corresponding to the gear tooth of cutter, heating device sets up in the lower part discharge gate department that beats printer head, the heat-proof device cover is established and is beaten the printer head outside.

2. The dual link drive solid 3D print delivery molding apparatus of claim 1, wherein: the gear set comprises two linkage gears and two feeding gears, each linkage gear is coaxially overlapped with one feeding gear, the two linkage gears are meshed, the two feeding gears are matched with each other to form a gear feeding mechanism, a connecting shaft is arranged at the center of each pair of linkage gears and the feeding gears, an eccentric shaft is arranged at one end of each connecting shaft, the connecting rods are provided with two connecting rods, and the two ends of each connecting rod are respectively in shaft connection and matching with the corresponding eccentric shafts of the upper and lower groups of gear sets.

3. The dual link drive solid 3D print delivery molding apparatus of claim 2, wherein: the eccentric shafts on the two connecting rods are arranged with a 90-degree difference.

4. The dual link drive solid 3D print delivery molding apparatus of claim 1, wherein: the heating device comprises an electric heating block and a nozzle, the nozzle is arranged on a discharge hole at the lower part of the printing head, and the electric heating block is arranged on the nozzle.

5. The dual link drive solid 3D print delivery molding apparatus of claim 1, wherein: the heat insulation device is a heat insulation shell, and the heat insulation shell is sleeved outside the printing head.