3D printing pen capable of automatically extruding multifunctional heat capacity glue

Abstract

The 3D printing pen comprises a pen point cap, a rear shell, a discharging port, a discharging port, a key control port, a ceramic head nozzle, a heating assembly, a storage bin, a pushing assembly, a key control assembly and a power supply assembly, front heating feeding and rear rod pushing are adopted, rolling shaft fixing is not needed, the requirement for materials is not high, and the cost is low. A hot melt adhesive rod or a rod can be used for heating meltable food, and the application range is wider; the gear box power assembly drives the worm tooth to rotate, the worm tooth is meshed with the rack section, the worm tooth is used for driving the rack push rod to move, raw materials are extruded through the rack push rod, and the problems that the raw materials are stuck, the extrusion process is interrupted, and the extrusion amount is not easy to control are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing pens, and more specifically, mainly relates to a 3D printing pen capable of automatically extruding multifunctional thermal-capacitive adhesive. Background Art

[0002] The hot melt glue 3D printing pen is a pen with hot melt glue and 3D printing functions. It uses plastics such as EVA and PLA to extrude hot melt plastic by heating, then quickly cools in the air, and finally solidifies into a stable state. The principle of the hot melt glue gun currently widely used in various industries is: after the power is turned on and the power switch is turned on, the heating wire inside the hot melt aluminum barrel heats up and controls the temperature through the thermistor. When the temperature reaches the set value, the glue stick enters the hot melt aluminum barrel through the glue stick insertion port. At this time, the temperature of the hot melt aluminum barrel melts the glue stick, and the trigger push device drives the glue stick push device sleeve to push the glue stick to the direction of the gun nozzle (glue outlet) for extrusion. This hot melt glue gun is completely manually controlled, and the amount of melted glue extruded is not easy to control. When the glue stick is extruded, sometimes the extrusion device cannot hold the glue stick, resulting in extrusion failure.

[0003] There are also automatic hot melt pens. 3D printing pens have been widely used in various fields. Hot melt pens and 3D printing pen products have also become children's intellectual development, science and education, as well as people's creation and entertainment tools. A wire feeding mechanism is provided inside the 3D drawing pen. In order to drive the wire feeding mechanism to feed the wire from top to bottom along the pen body, the existing technology is to install a reduction motor horizontally at the tail of the drawing pen (mostly avoiding the grip part and set at the tail for ease of use). The reduction motor is fixed in the pen body by screws, etc. The reduction motor directly drives the wire feeding gear connected to its shaft. The wire feeding mechanism of the existing 3D drawing pen mostly bites the plastic wire through the gear. The bite depth of the plastic wire varies during the rotation of the gear. When the wire feeding resistance is large, the consumables are easily bitten off, resulting in slippage, and this propulsion method cannot use food-type materials as consumables. Therefore, it is necessary to improve the discharge method and propulsion method of the 3D printing pen. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic extrusion multifunctional thermal-capacitive glue 3D printing pen in view of the above-mentioned shortcomings, so as to solve the technical problems such as the unstable discharge mode and the propulsion mode in the prior art.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides an automatic extrusion multifunctional thermal-capacity glue 3D printing pen, comprising a pen cap and a rear shell fixed to the rear side of the pen cap, wherein the pen cap and the rear shell are both cylindrical, and the internal space of the pen cap and the rear shell forms a component accommodating cavity; a discharge port is arranged at the top of the front end of the pen cap, a discharge port is arranged at the middle section of the pen cap, and a key control port is arranged at the lower side of the discharge port of the pen cap; A ceramic nozzle fixed to the discharge port of the pen cap; A heating component fixed to the front section of the pen cap, located at the rear side of the ceramic head nozzle and connected to the ceramic head nozzle; A storage bin fixed to the lower side of the discharge port of the pen cap and connected to the heating component at the front end; A material pushing component fixed to the rear section of the pen cap and pushing the travel arm into the material storage bin; A key control assembly fixed inside the key control opening of the pen cap; A power supply assembly fixed in the rear housing; The heating component, the material pushing component and the power supply component are electrically connected to the key control component respectively.

[0006] Furthermore, the heating component includes a high-temperature guide tube fixed at the front section of the pen cap and located behind the ceramic head nozzle, a cylindrical heating film fixed on the inside of the high-temperature guide tube, and a thermally conductive copper sleeve fixed on the inside of the cylindrical heating film. The cylindrical heating film is electrically connected to the key control component and the heating current is controlled by the key control component. The front end of the thermally conductive copper sleeve is connected to the ceramic head nozzle, and the rear end of the thermally conductive copper sleeve is connected to the storage bin.

[0007] Furthermore, the pushing assembly includes a base, a motor fixed in the base by a motor buckle, a worm fixed on the motor power output shaft, worm teeth rotatably fixed in the base and meshing with the worm, a rack push rod slidably fixed in the upper track of the storage bin, and a return buckle fixed on the upper side of the rack push rod. A rack is provided at the bottom of the rack push rod, the rack meshes with the worm teeth, and the front end of the rack push rod extends into the storage bin.

[0008] Furthermore, the button control component includes a PCBA control board inside a button control port, the PCBA control board is integrated with a control switch that extends into the button control port, the button control port is slidably provided with a button, the button contacts the control switch, and the heating component, the pushing component, and the power supply component are electrically connected to the PCBA control board via cables.

[0009] Furthermore, the button control component also includes a thermistor, the thermistor is against the heating component, the thermistor is electrically connected to the PCBA control board, and a two-color indicator light is integrated on the PCBA control board.

[0010] Furthermore, the button control assembly also includes a limit switch integrated inside the PCBA control board, and the limit switch is directly opposite to the front end of the pusher assembly.

[0011] Furthermore, the power supply component includes a battery compartment fixed in the rear shell, a battery fixed in the battery compartment, a power control board fixed on the rear side of the battery in the battery compartment, and a back cover slidably closed and fixed at the rear end of the rear shell. The power control board is integrated with a power switch and a charging interface. The back cover contacts the power switch, and the back cover is provided with a charging window corresponding to the charging interface. The battery is electrically connected to the power control board, and the power control board is electrically connected to the button control component.

[0012] Compared with the prior art, the present invention has the following beneficial effects: it adopts front heating and feeding, and rear rod pushing, and does not require roller fixing, and has low requirements on the material itself. Hot melt glue sticks or rod-shaped foods can be used to heat fusible foods, and has a wider range of applications; the gear box power assembly drives the worm gear to rotate, and the worm gear teeth are engaged with the rack segment. The worm gear teeth are used to drive the rack push rod to move, and the rack push rod is used to extrude the raw materials, and there will be no problems such as jamming, interruption of the extrusion process, and difficulty in controlling the extrusion amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of a 3D printing pen that automatically extrude multifunctional thermal adhesive in an embodiment of the present invention; Figure 2 This is a schematic diagram of the disassembly of a 3D printing pen that automatically extrude multifunctional thermal adhesive in an embodiment of the present invention; Figure 3 Schematic diagram of a rack push rod in an embodiment of the present invention.

[0014] The following are the descriptions of the reference numerals: 1 is the pen cap, 2 is the back shell, 3 is the discharge port, 4 is the discharge port, 5 is the key control port, 6 is the ceramic head nozzle, 7 is the heating component, 8 is the storage bin, 9 is the push component, 10 is the key control component, 11 is the power supply component, 701 is the high temperature guide tube, 702 is the cylindrical heating film, 703 is the heat-conducting copper sleeve, 801 is the track, 901 is the base, 902 is the motor buckle, 903 is the motor, 904 is the worm, 905 is the worm, 906 is the worm, 907 is the worm, 908 is the worm, 909 is the worm, 910 is the worm, 911 is the worm, 912 is the worm, 913 is the worm, 914 is the worm, 915 05 is the worm gear, 906 is the rack push rod, 907 is the return buckle, 908 is the rack, 101 is the PCBA control board, 102 is the control switch, 103 is the button, 104 is the cable, 105 is the thermistor, 106 is the limit switch, 111 is the battery compartment, 112 is the battery, 113 is the power control board, 114 is the back cover, 115 is the power switch, 116 is the charging interface, and 117 is the charging window. Implementation

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] refer to Figure 1 , Figure 2 and Figure 3As shown, the embodiment of the present invention is an automatic extrusion multifunctional thermal adhesive 3D printing pen, which importantly includes a pen cap 1 and a rear shell 2 fixed to the rear side of the pen cap 1. The pen cap 1 and the rear shell 2 are both cylindrical, and the internal space of the pen cap 1 and the rear shell 2 forms a component accommodating cavity for installing various functional components of the 3D printing pen; A discharge port 3 is arranged at the top of the front end of the pen cap 1, a discharge port 4 is arranged at the middle section of the pen cap 1, and a button control port 5 is arranged at the lower side of the discharge port 4 of the pen cap 1; The ceramic nozzle 6 fixed to the discharge port 3 of the pen cap 1 can withstand high temperatures and can isolate heat from being transferred to the discharge port 3 of the pen cap 1 to a certain extent; A heating assembly 7 is fixed to the front section of the pen cap 1 and is located behind the ceramic head nozzle 6 and is connected to the ceramic head nozzle 6. The front end is heated and discharged without the need for roller fixation. A material storage bin 8 is fixed to the lower side of the discharge port 4 of the pen cap 1 and the front end of which is connected to the heating component 7, and hot-melt materials or stick-shaped heated meltable food can be put into the discharge port 4; A material pushing component 9 is fixed to the rear section of the pen cap 1 and pushes the stroke arm to extend into the material storage bin 8, pushing the molten material into the heating component 7 from the rear side, and then extruding it from the ceramic head nozzle 6; The key control assembly 10 fixed to the inner side of the key control opening 5 of the pen cap 1 is used to control the entire process; A power supply assembly 11 fixed in the rear housing 2 is used to supply power to the 3D printing pen and to perform charging functions; The heating component 7, the pushing component 9, and the power supply component 11 are electrically connected to the key control component 10 respectively, and the key control component 10 controls the working process of the 3D printing pen; With this design, the material is heated and fed at the front and pushed by the rear rod. There is no need for roller fixation, and the requirements for the material itself are not high. Hot melt glue sticks or rod-shaped foods can be used to heat fusible foods, and the application range is wider.

[0017] The heating assembly 7 includes a high-temperature guide tube 701 fixed to the front section of the pen cap 1 and located at the rear side of the ceramic head nozzle 6, which plays a role of fixing and heat insulation; a cylindrical heating film 702 fixed to the inner side of the high-temperature guide tube 701, and a heat-conducting copper sleeve 703 fixed to the inner side of the cylindrical heating film 702. The cylindrical heating film 702 is electrically connected to the key control assembly 11 and the heating current is controlled by the key control assembly 11 to provide heat for hot melting. The front end of the heat-conducting copper sleeve 703 is connected to the ceramic head nozzle 6, and the rear end of the heat-conducting copper sleeve 703 is connected to the storage bin 8. The heat-conducting copper sleeve 703 is directly used for heat-conducting hot-melt materials, and the front side is used to heat and feed the materials, and the rear rod is used to push, without the need for roller fixing. The material itself is not required to be high, and it can be a rod-shaped heated fusible food, or ordinary plastics such as ABS, PETG, PLA, PCL, etc., which can be selected according to needs. The multifunctional thermal-capacitive adhesive 3D printing pen can be used in the field of 3D printing, as well as other purposes such as creative DIY and writing.

[0018] Wherein, the pushing assembly 9 includes a base 901, a motor 903 fixed in the base through a motor buckle 902, a worm 904 fixed on the power output shaft of the motor 903, a worm tooth 905 rotatably fixed in the base 901 and meshing with the worm 904, a rack push rod 906 slidably fixed in the track 801 on the upper side of the storage bin 8, a return buckle 907 fixed on the upper side of the rack push rod 906, a rack 908 is provided at the bottom of the rack push rod 906, the rack 908 meshes with the worm tooth 905, the front end of the rack push rod 906 extends into the storage bin 8, and the power of the motor 903 is converted into a forward thrust in the storage bin 8 through the worm 904 and worm teeth 905, so as to push the molten material into the heat-conducting copper sleeve 703 to melt, and then be discharged from the ceramic head nozzle 6; With this design, the motor 903 and the worm 904 power assembly drive the worm gear 905 to rotate, and the worm gear 905 meshes with the rack 908. The worm gear 905 is used to drive the rack push rod 906 to move. The rack push rod 906 is used to extrude the raw material without problems such as jamming, interruption of the extrusion process, and difficulty in controlling the extrusion amount.

[0019] Among them, the button control component 10 includes a PCBA control board 101 inside the button control port, and a control switch 102 is integrated on the PCBA control board 101 and extends into the button control port 5. The button control port 5 is slidably provided with a button 103, and the button 103 contacts the control switch 102. The heating component 7, the pushing component 9, and the power supply component 11 are electrically connected to the PCBA control board 101 through the flat cable 104 respectively. By pressing the button 103, the heating and melting state of the molten material and the extrusion process of the pushing component 9 can be controlled.

[0020] A further design is that the button control component 10 also includes a thermistor 105, the thermistor 105 is against the heating component 7, and the thermistor 105 is electrically connected to the PCBA control board 101. The main purpose is that the thermistor 105 can provide a temperature value of the heating component 7, and provide a control basis for the PCBA control board 101 to control the heating and hot melting. A two-color indicator light is integrated on the PCBA control board 101 to indicate whether the hot melt component is heated to a state where it can be hot melted.

[0021] A further design is that the button control component 10 also includes a limit switch 106 integrated on the inner side of the PCBA control board 101. The limit switch 106 is opposite to the front end of the pusher component 9, and the limit switch 106 is close to the rear end of the ceramic head nozzle 6. The distance between the rack push rod 906 of the pusher component 9 and the ceramic head nozzle 6 is minimized when the limit switch 106 contacts the pusher component 9, thereby providing a signal to the PCBA control board 101 to stop the pusher component 9, thereby realizing automatic control and protecting product components and the pusher component 9.

[0022] Among them, the power supply component 11 includes a battery compartment 111 fixed in the rear shell 2, a battery 112 fixed in the battery compartment 111, a power control board 113 fixed on the rear side of the battery 112 in the battery compartment 111, and a rear cover 114 that can be slidably closed and fixed at the rear end of the rear shell 2. The power control board 113 is integrated with a power switch 115 and a charging interface 116. The rear cover 114 contacts the power switch 115, and the power switch 115 can be controlled by pressing the rear cover 114 to start the power on and off; the rear cover 114 is provided with a charging window 117 corresponding to the charging interface 116 for inserting a power cord for charging; the battery 112 is electrically connected to the power control board 113, and the power control board 113 is electrically connected to the button control component 10.

[0023] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0024] Although the present invention is described herein with reference to a number of illustrative embodiments of the present invention, it will be appreciated that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the present disclosure, drawings, and claims, a variety of variations and improvements may be made to the components and / or layout of the subject combination layout. In addition to variations and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. An automatic extrusion multifunctional thermal adhesive 3D printing pen, characterized in that: It includes a pen cap and a rear shell fixed to the rear side of the pen cap, the pen cap and the rear shell are both cylindrical, and the internal space of the pen cap and the rear shell forms a component accommodating chamber; the front end of the pen cap is provided with a discharge port, the middle section of the pen cap is provided with a discharge port, and a key control port is provided at the lower side of the discharge port of the pen cap; A ceramic nozzle fixed to the discharge port of the pen cap; A heating component fixed to the front section of the pen cap, located at the rear side of the ceramic head nozzle and connected to the ceramic head nozzle; A storage bin fixed to the lower side of the discharge port of the pen cap and connected to the heating component at the front end; A material pushing component fixed to the rear section of the pen cap and pushing the travel arm into the material storage bin; A key control assembly fixed inside the key control opening of the pen cap; A power supply assembly fixed in the rear housing; The heating component, the material pushing component and the power supply component are electrically connected to the key control component respectively.

2. The automatic extrusion multifunctional thermal adhesive 3D printing pen according to claim 1, characterized in that: The heating component includes a high-temperature guide tube fixed to the front section of the pen cap and located behind the ceramic head nozzle, a cylindrical heating film fixed on the inside of the high-temperature guide tube, and a heat-conducting copper sleeve fixed on the inside of the cylindrical heating film. The cylindrical heating film is electrically connected to the key control component and the heating current is controlled by the key control component. The front end of the heat-conducting copper sleeve is connected to the ceramic head nozzle, and the rear end of the heat-conducting copper sleeve is connected to the storage bin.

3. The automatic extrusion multifunctional thermal adhesive 3D printing pen according to claim 1, characterized in that: The pushing assembly includes a base, a motor fixed in the base by a motor buckle, a worm fixed on the motor power output shaft, worm teeth rotatably fixed in the base and meshing with the worm, a rack push rod slidably fixed in the upper track of the storage bin, and a return buckle fixed on the upper side of the rack push rod. A rack is provided at the bottom of the rack push rod, the rack meshes with the worm teeth, and the front end of the rack push rod extends into the storage bin.

4. The automatic extrusion multifunctional thermal adhesive 3D printing pen according to claim 1, characterized in that: The key control component includes a PCBA control board inside a key control port, a control switch is integrated on the PCBA control board and extends into the key control port, a key is slidably provided on the key control port, and the key contacts the control switch, and the heating component, the pushing component, and the power supply component are electrically connected to the PCBA control board through cables.

5. The automatic extrusion multifunctional thermal adhesive 3D printing pen according to claim 4, characterized in that: The button control assembly also includes a thermistor, the thermistor is against the heating assembly, the thermistor is electrically connected to the PCBA control board, and a two-color indicator light is integrated on the PCBA control board.

6. The automatic extrusion multifunctional thermal adhesive 3D printing pen according to claim 4, characterized in that: The button control assembly also includes a limit switch integrated inside the PCBA control board, and the limit switch is directly opposite to the front end of the pusher assembly.

7. The automatic extrusion multifunctional thermal adhesive 3D printing pen according to claim 1, characterized in that: The power supply component includes a battery compartment fixed in the rear shell, a battery fixed in the battery compartment, a power control board fixed on the rear side of the battery in the battery compartment, and a back cover slidably closed and fixed to the rear end of the rear shell. A power switch and a charging interface are integrated on the power control board. The back cover contacts the power switch. The back cover is provided with a charging window corresponding to the charging interface. The battery is electrically connected to the power control board, and the power control board is electrically connected to the button control component.

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