Auxiliary feeding device

By designing auxiliary feeding devices in the 3D printing system, using motor power assist and meshing gear structures, the problem of unstable feeding of consumable racks under high tension is solved, stable and efficient wire conveying is achieved, and printing quality is improved.

CN222346303UActive Publication Date: 2025-01-14YIJIANG (TAIZHOU) INTELLIGENT EQUIPMENT TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202421091981.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-17
Publication Date
2025-01-14
Estimated Expiration
2034-05-17

AI Technical Summary

Technical Problem

In the existing 3D printing technology, when the pulley mechanism of the consumable tray is facing a large wire pressure, the traction force of the wire inlet is insufficient, resulting in unstable feeding and affecting the printing quality.

Method used

Design an auxiliary feeding device, including a frame, an L-shaped support plate, swing arm, wire feeding gear device and a motor. Through induction proximity switch and delay switch, the motor is used to assist wire feeding to avoid slippage and wire breakage. The wire is pressed with a meshing gear structure to ensure stable transportation.

Benefits of technology

While saving energy consumption, it improves the feeding stability of the 3D printing system, avoids slippage and wire breakage, and ensures the reliability of flexible wire feeding and material discharge.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an auxiliary feeding device which comprises a machine frame, an L-shaped supporting plate is fixedly connected to one side of the machine frame, a fixing block, a swing arm and a wire feeding gear device are arranged between the machine frame and the L-shaped supporting plate, a positioning hole is formed in one side of the fixing block, the fixing block is fixedly connected with the machine frame, and the wire feeding gear device is arranged in the positioning hole. The two sides of the swing arm are rotationally connected with a first roller set and a second roller set correspondingly, one side of the swing arm is fixedly connected with a second stud, one side of the L-shaped supporting plate is rotationally connected with a first stud, the first stud is rotationally connected with the swing arm, and a motor is arranged in the rack. According to the utility model, the swing arm is matched with the induction type proximity switch, the condition of unsmooth wire feeding is recognized in a passive mode, and the motor is used for assisting wire feeding, so that the energy consumption is reduced compared with a 3D printer system which always starts the motor for assisting feeding, and meanwhile, the wire feeding and discharging are stable compared with a 3D printer system which does not start the motor for assisting feeding; the phenomena that the wire feeder slips and wires are broken can be avoided, and flexible wire feeding can be achieved.
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Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to an auxiliary feeding device. Background Art

[0002] 3D printing technology is a type of rapid prototyping technology, also known as additive manufacturing. The consumables used in the 3D printing process need to be loaded on plastic reels. When the printer is working, the wire on the reel needs to be rotated with the help of a bracket, so that the printer can smoothly peel off the wire on the reel for use.

[0003] The current consumable material tray rack generally adopts the method of setting a pulley mechanism at the bottom, such as the patent with application number 2023208017096. A rotating pulley is set on the tray bracket. The pulley is a concave structure that can correspond to the limited position of the tray body of the consumable tray. After the consumable tray is installed, it is pulled by the wire feeder, and the consumable tray and the pulley rotate synchronously to achieve the purpose of continuous wire feeding. However, if there is wire compression between the wires and the traction force of the wire feeder is not enough to pull the wire, the current material rack may not be able to feed stably, resulting in unstable nozzle discharge and affecting the printing quality. Therefore, it is urgent to design an auxiliary feeding device to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an auxiliary feeding device to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An auxiliary feeding device comprises a frame, one side of the frame is fixedly connected to an L-shaped support plate, a fixed block, a swing arm and a wire feeding gear device are arranged between the frame and the L-shaped support plate, one side of the fixed block is opened with a positioning hole, and the fixed block is fixedly connected to the frame, both sides of the swing arm are rotatably connected to a first roller group and a second roller group, and one side of the swing arm is fixedly connected to a second stud, one side of the L-shaped support plate is rotatably connected to a first stud, and the first stud is rotatably connected to the swing arm, a motor is arranged inside the frame, and a delay switch is arranged under the motor, a fixed support is fixedly connected to the inner wall of one side of the frame, and an inductive proximity switch is movably plugged into the fixed support.

[0007] Preferably, a third stud is fixedly connected to one side of the frame, and a first spring is arranged between the third stud and the second stud.

[0008] Preferably, an arc track is provided at a position corresponding to the second stud on one side of the frame, and the second stud is slidably connected inside the arc track.

[0009] Preferably, the first roller group and the second roller group are cylindrical, and arc grooves are formed in the middle of the first roller group and the second roller group.

[0010] Preferably, the wire feeding gear device includes a wire feeding active gear, a wire feeding driven gear, a gear frame, a push rod and a second spring. The wire feeding active gear is fixedly connected to the moving end of the motor, and the wire feeding active gear and the wire feeding driven gear are meshed with each other. The wire feeding driven gear is rotatably connected to the gear frame, and a push rod is fixedly connected to the outer surface of the bottom of the gear frame. A second spring is sleeved on the outer side of the push rod, and one end of the second spring is fixed to the bottom of the gear frame, and the other end is in contact with one side of the L-shaped support plate, and the push rod is movably connected to the L-shaped support plate.

[0011] Preferably, a cable connector is fixedly connected to one side of the frame, and a round hole is opened in the middle of the cable connector.

[0012] In the above technical solution, the utility model provides an auxiliary feeding device, which has the following beneficial effects:

[0013] (1) The swing arm and the inductive proximity switch cooperate with each other to passively identify the situation of poor wire feeding, and use the motor to assist wire feeding. This saves energy compared to a 3D printer system that always turns on the motor to assist in feeding. At the same time, it is more energy-efficient than a 3D printer system that does not have auxiliary feeding. The wire feeding and material output are more stable, and the wire feeder can be prevented from slipping and wire breakage, thereby achieving flexible wire feeding.

[0014] (2) By providing two rows of teeth on both the wire feeding active gear and the wire feeding driven gear, one row is meshing teeth and the other row is wire feeding teeth, the wire feeding teeth are grooved, and the wire feeding active gear and the wire feeding driven gear press the wire material through the wire feeding teeth, so that the wire material can be better transported and the wire slippage can be effectively avoided.

[0015] (3) By pulling the push rod, it is convenient to install the wire and embed it between the gears when changing materials. When the tension is large, the gear frame can move up and down, and it is not easy to break the wire due to excessive tension. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 The present invention provides a three-dimensional schematic diagram of the overall structure of an auxiliary feeding device embodiment of the present invention.

[0018] Figure 2A three-dimensional schematic diagram of the internal structure of a frame provided for an auxiliary feeding device embodiment of the utility model.

[0019] Figure 3 A three-dimensional schematic diagram of the structure of a wire feeding gear device provided in an embodiment of an auxiliary feeding device of the utility model.

[0020] 1 frame, 2 L-shaped support plate, 3 fixed block, 4 positioning hole, 5 swing arm, 6 first roller group, 7 second roller group, 8 first stud, 9 second stud, 10 third stud, 11 first spring, 12 fixed support, 13 inductive proximity switch, 14 motor, 15 delay switch, 16 arc track, 17 wire feeding gear device, 18 wire feeding active gear, 19 wire feeding driven gear, 20 gear frame, 21 push rod, 22 second spring, 23 cable connector. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0022] like Figure 1-3 As shown, an auxiliary feeding device provided by an embodiment of the utility model includes a frame 1, an L-shaped support plate 2 is fixedly connected to one side of the frame 1, a fixed block 3, a swing arm 5 and a wire feeding gear device 17 are arranged between the frame 1 and the L-shaped support plate 2, a positioning hole 4 is opened on one side of the fixed block 3, and the fixed block 3 is fixedly connected to the frame 1, a first roller group 6 and a second roller group 7 are rotatably connected on both sides of the swing arm 5, and a second stud 9 is fixedly connected to one side of the swing arm 5, a first stud 8 is rotatably connected to one side of the L-shaped support plate 2, and the first stud 8 is rotatably connected to the swing arm 5, a motor 14 is arranged inside the frame 1, and a delay switch 15 is arranged under the motor 14, a fixed support 12 is fixedly connected to the inner wall of one side of the frame 1, and an inductive proximity switch 13 is movably plugged into the fixed support 12.

[0023] Specifically, in this embodiment, a frame 1 is included, one side of the frame 1 is fixedly connected to an L-shaped support plate 2, a fixed block 3, a swing arm 5 and a wire feeding gear device 17 are arranged between the frame 1 and the L-shaped support plate 2, a positioning hole 4 is provided on one side of the fixed block 3, and the fixed block 3 is fixedly connected to the frame 1, the positioning hole 4 is used for the wire to enter, the two sides of the swing arm 5 are rotatably connected to the first roller group 6 and the second roller group 7, and one side of the swing arm 5 is fixedly connected to the second stud 9, the swing arm 5 is a T-shaped structure, and one side of the swing arm 5 is provided with a groove, the first roller group 6 and the second roller group 7 are rotatably connected inside the groove of the swing arm 5, and the L-shaped support plate 2 is rotatably connected to the first roller group 6 and the second roller group 7. Stud 8, and the first stud 8 is rotatably connected to the swing arm 5, the swing arm 5 can rotate around the first stud 8, a motor 14 is arranged inside the frame 1, and a delay switch 15 is arranged below the motor 14, the motor 14 is used to provide power, when the tension increases, the motor 14 will move with the wire feeding device 17, thereby realizing stable wire feeding, the delay switch 15 can delay the motor from shutting down, which can effectively prevent the wire from slipping, a fixed support 12 is fixedly connected to the inner wall on one side of the frame 1, and an inductive proximity switch 13 is movably plugged into the fixed support 12, a sleeve is fixedly installed on the fixed support 12, and the inductive proximity switch 13 is plugged into the sleeve.

[0024] The utility model provides an auxiliary feeding device, which cooperates with the swing arm 5 and the inductive proximity switch 13 to passively identify the situation of poor wire feeding, and assists wire feeding through the motor 14. It saves energy compared with a 3D printer system in which the motor 14 is always turned on for auxiliary feeding. At the same time, it feeds wire and discharges materials more stably than a 3D printer system without auxiliary feeding, and can avoid slipping of the wire feeder and wire breakage, thereby realizing flexible wire feeding.

[0025] In an embodiment provided by the utility model, a third stud 10 is fixedly connected to one side of the frame 1, and a first spring 11 is arranged between the third stud 10 and the second stud 9, one end of the first spring 11 is sleeved on the third stud 10, and the other end of the first spring 11 is sleeved on the second stud 9, and the swing arm 5 can be placed in a horizontal state through the second stud 9.

[0026] In another embodiment provided by the utility model, an arc track 16 is opened at a position corresponding to the second stud 9 on one side of the frame 2, and the second stud 9 is slidably connected inside the arc track 16. When the wire tension increases, the first spring 11 installed between the second stud 9 and the third stud 10 is gradually stretched, the swing arm 5 rotates around the first stud 8, and the second stud 9 descends along the arc track 16. When the second stud 9 reaches the sensing position of the inductive proximity switch 13, the motor 14 inside the frame 1 can be turned on.

[0027] In another embodiment provided by the utility model, the first roller group 6 and the second roller group 7 are cylindrical, and arc grooves are opened in the middle of the first roller group 6 and the second roller group 7. The first roller group 6 and the second roller group 7 are each provided with two rollers, and the two rollers are distributed up and down. The arc grooves on the two rollers can make the wire pass through more smoothly without wire jamming.

[0028] In one embodiment of the utility model, the wire feeding gear device 17 includes a wire feeding driving gear 18, a wire feeding driven gear 19, a gear frame 20, a push rod 21 and a second spring 22. The wire feeding driving gear 18 is fixedly connected to the moving end of the motor 14, and the wire feeding driving gear 18 and the wire feeding driven gear 19 are meshed with each other. The wire feeding driving gear 18 and the wire feeding driven gear 19 are both provided with two rows of teeth, one row of which is a transmission meshing tooth. Through the meshing teeth of the wire feeding driving gear 18 and the wire feeding driven gear 19, the wire feeding driving gear 18 rotates to drive the wire feeding driven gear 19 to rotate, and the other row is a wire feeding tooth. The wire feeding tooth is groove-shaped. The active tooth 18 and the wire feeding driven gear 19 press the wire material through the wire feeding tooth, and the wire feeding driven gear 19 is rotatably connected to the gear frame 20, and a push rod 21 is fixedly connected to the outer surface of the bottom of the gear frame 20, and a second spring 22 is sleeved on the outer side of the push rod 21, and one end of the second spring 22 is fixed to the bottom of the gear frame 20, and the other end is fitted with one side of the L-shaped support plate 2. The push rod 21 is movably plugged into the L-shaped support plate 2. By pulling the push rod 21, it is convenient to install the wire material between the wire feeding active gear 18 and the wire feeding driven gear 19 when changing materials, and when the tension is large, the gear frame 20 can move up and down, and it is not easy to break the wire due to excessive tension.

[0029] In another embodiment provided by the utility model, a cable connector 23 is fixedly connected to one side of the frame 1, and a round hole is opened in the middle of the cable connector 23. The round hole in the middle of the cable connector 23 is used to connect the cable so that the cable can be electrically connected to the internal components. The cable connector 23 can be used for insulation protection of the connection.

[0030] Working principle: Pull the wire on the consumables disk, pass the wire through the positioning hole 4, pass through the wire feeding grooves of the meshing wire feeding active gear 18 and the wire feeding driven gear 19, and then sequentially embed into the arc grooves between the first roller group 6 and the second roller group 7 on both sides of the swing arm 5, and finally load the wire into the wire feeder. Through the traction of the wire feeder, the wire will enter the wire feeder through the auxiliary feeding device, and the change of the wire feeding tension will cause the swing arm 5 to rotate, causing the second stud 9 on the swing arm 5 to move up and down along the arc track 16. When the wire tension increases, the second stud 9 and the third stud 10 The first spring 11 installed between is gradually stretched, the swing arm 5 rotates around the first stud 8, and the second stud 9 descends along the arc track 16. When the second stud 9 reaches the sensing position of the inductive proximity switch 13, the motor 14 inside the frame 1 is turned on, and the motor 14 drives the wire feeding active gear 19 to rotate, thereby achieving stable wire feeding. When the tension decreases, the swing arm 5 rotates upward and gradually returns to its original position, and the second stud 9 gradually moves away from the sensing position of the inductive proximity switch 13 along the arc track 16. The first spring 11 gradually returns to its original state, and the motor 14 is turned off. At this time, the wire is pulled in by the wire feeder.

[0031] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An auxiliary feeding device, comprising a frame (1), characterized in that: An L-shaped support plate (2) is fixedly connected to one side of the frame (1); a fixed block (3), a swing arm (5) and a wire feeding gear device (17) are arranged between the frame (1) and the L-shaped support plate (2); a positioning hole (4) is opened on one side of the fixed block (3), and the fixed block (3) is fixedly connected to the frame (1); a first roller group (6) and a second roller group (7) are rotatably connected to the two sides of the swing arm (5); a second stud (9) is fixedly connected to one side of the swing arm (5); a first stud (8) is rotatably connected to one side of the L-shaped support plate (2), and the first stud (8) is rotatably connected to the swing arm (5); a motor (14) is arranged inside the frame (1), and a delay switch (15) is arranged below the motor (14); a fixed support (12) is fixedly connected to the inner wall of one side of the frame (1), and an inductive proximity switch (13) is movably plugged into the fixed support (12).

2. An auxiliary feeding device according to claim 1, characterized in that: A third stud (10) is fixedly connected to one side of the frame (1), and a first spring (11) is arranged between the third stud (10) and the second stud (9).

3. An auxiliary feeding device according to claim 2, characterized in that: An arc track (16) is provided at a position corresponding to the second stud (9) on one side of the frame (1), and the second stud (9) is slidably connected inside the arc track (16).

4. The auxiliary feeding device according to claim 1, characterized in that: The first roller group (6) and the second roller group (7) are cylindrical, and arc grooves are provided in the middle of the first roller group (6) and the second roller group (7).

5. The auxiliary feeding device according to claim 1, characterized in that: The wire feeding gear device (17) comprises a wire feeding active gear (18), a wire feeding driven gear (19), a gear frame (20), a push rod (21) and a second spring (22); the wire feeding active gear (18) is fixedly connected to the moving end of the motor (14), and the wire feeding active gear (18) and the wire feeding driven gear (19) are meshed with each other; the wire feeding driven gear (19) is rotatably connected to the gear frame (20), and a push rod (21) is fixedly connected to the outer surface of the bottom of the gear frame (20); the outer side of the push rod (21) is sleeved with a second spring (22); one end of the second spring (22) is fixed to the bottom of the gear frame (20), and the other end is mutually fitted with one side of the L-shaped support plate (2); the push rod (21) is movably plugged with the L-shaped support plate (2).

6. The auxiliary feeding device according to claim 1, characterized in that: A cable connector (23) is fixedly connected to one side of the frame (1), and a round hole is provided in the middle of the cable connector (23).