3D printing consumable connector
By designing a pliers-type 3D printing filament connector, using an electric heating rod and combining it with a grinding area, the problems of unstable heating and complex structure in existing technologies are solved, achieving convenient filament connection and protrusion removal.
Patent Information
- Application Number
- CN202522375082.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-10
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-10
AI Technical Summary
Existing 3D printing consumable connectors require additional hot-melt tools for heating, resulting in unstable temperatures, fixed structures that are difficult to move, and complex installation.
Design a pliers-like structure comprising a pliers head, a rotating opening and closing part, and a handle. The pliers head has a heating area and a grinding area. It uses an electric heating rod to heat and removes protrusions through the grinding hole. The overall structure is easy to move and install.
It achieves temperature-controlled heating and welding, reduces heating protrusions, has a simple structure that is easy to use, and avoids dependence on additional tools and cumbersome operations.
Smart Images

Figure CN224928536U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of 3D printing consumables, and in particular to a 3D printing consumable connector. Background Technology
[0002] The 3D printing filament connector is a very useful tool for securely connecting two pieces of 3D printing filament (such as PLA, ABS, PETG, etc.). This is extremely useful when dealing with filament scraps, changing colors, or repairing broken filament.
[0003] For example, the utility model with publication number CN221756874U discloses a 3D printing consumable connector, including: a support base, a wire tube fixedly connected to one end inside the support base, an external threaded ring block fixedly connected to one end outside the wire tube, a limit ring fixedly connected to the other end of the wire tube, a fastening ring block threadedly connected to the outside of the external threaded ring block, an inner cone block fixedly connected inside the fastening ring block, and a hollow cone cutter fixedly connected to one end outside the inner cone block.
[0004] The above solution has the following drawbacks: 1. Additional heat-melting tools are required for heating, usually a lighter, but its heating temperature is unstable; 2. It is fixed by a support base, and the overall structure is fixed, making it inconvenient to move; 3. The structure is complex and installation is inconvenient. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a 3D printing consumable connector that is more convenient, faster, safer and more reliable to use.
[0006] The objective of this utility model can be achieved through the following technical solutions: A 3D printing filament connector includes a main body, which is a pliers structure comprising a pliers head, a rotating opening and closing part, and a handle connected in sequence. The pliers head has a grinding area, a chip removal hole, and a heating area arranged sequentially along the center line in the middle. The grinding area includes a grinding hole that mates with the 3D printing filament, and the wall of the grinding hole has raised textures. The chip removal hole connects the grinding hole and the outside of the pliers head. The heating area includes a heating hole that mates with the 3D printing filament and heating rods located on both sides of the heating hole. The heating rods are fixed by the pliers head. The pliers head is made of a heat-conducting material, and the outer side of the grip is covered with a rubber sleeve.
[0007] Furthermore, the pliers head includes a first sub-pliers head and a second sub-pliers head, and the grinding hole, chip removal hole and heating hole are all distributed on the end faces of the first sub-pliers head and the second sub-pliers head that are close to each other.
[0008] Furthermore, the extending direction of the grinding hole and the heating hole is the extending direction of the end faces of the first and second sub-pliers that are close to each other.
[0009] Furthermore, the chip removal hole extends perpendicularly to the extension direction of the end faces of the first and second sub-pliers that are close to each other, and connects the grinding hole and the heating hole.
[0010] Furthermore, the horizontal plane containing the grinding hole and the heating hole is located above the horizontal plane containing the rotating opening and closing part.
[0011] Furthermore, the heating rod is connected to a power supply.
[0012] Furthermore, the wall of the polished hole has a serrated texture.
[0013] Furthermore, the rotating opening and closing part includes a first rotating part and a second rotating part that are rotatably connected, and a spring is connected between the first rotating part and the second rotating part.
[0014] Furthermore, the heating rod is perpendicular to the surface of the pliers head.
[0015] Furthermore, the clamp head is provided with mounting holes for installing a power supply heating rod.
[0016] Compared with the prior art, the present invention has the following advantages: (1) This utility model provides a pliers-type main structure, with a heating area in the pliers head and a heating hole inside. Electric heating rods are provided on both sides of the heating hole. The heating rods conduct heat to the heating hole to heat and weld the 3D printing consumables. The heating rods can control the temperature and are safe. Heating inside the pipe can reduce the protrusions caused by heating. Furthermore, a grinding area and chip removal hole are provided. The grinding hole in the grinding area can be used to grind the 3D printing consumables after heating and welding, which can effectively reduce the protrusions caused by heating. The overall structure makes it more convenient and faster to use.
[0017] (2) The integrated grip structure of this utility model can prevent the cumbersome steps caused by disassembly. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of a 3D printing consumable connector provided in an embodiment of this utility model; Figure 2 This is an exploded view of the structure of a 3D printing consumable connector provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the heating state of 3D printing consumables in a 3D printing consumable connector provided in an embodiment of this utility model; Figure 4 for Figure 3 A magnified view of a portion of the image; Figure 5 This is a schematic diagram of the 3D printing consumable polishing state of a 3D printing consumable connector provided in this embodiment of the utility model; In the diagram, 1 is the grinding area, 2 is the rubber sleeve, 3 is the heating rod, 4 is the chip removal hole, 5 is the heating area, and 6 is the 3D printing consumable. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0022] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0023] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0024] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0025] Example 1 like Figure 1 and Figure 2 As shown, this embodiment provides a 3D printing consumable connector, including a main body, which is a pliers structure, including a pliers head, a rotating opening and closing part, and a handle connected in sequence. The pliers head has a grinding area 1, a chip removal hole 4 and a heating area 5 arranged sequentially along the center line. The grinding area 1 includes a grinding hole that mates with the 3D printing consumable, and the wall of the grinding hole has raised textures. The chip removal hole 4 connects the grinding hole and the outside of the pliers head. The heating area 5 includes a heating hole that mates with the 3D printing consumable and heating rods 3 located on both sides of the heating hole. The heating rods 3 are fixed by the pliers head. The pliers head is made of heat-conducting material, and the outer side of the handle is covered with a rubber sleeve 2.
[0026] This solution provides a pliers-like main structure with a heating area 5 in the pliers head, containing heating holes. Heating rods 3 are located on both sides of the heating holes, and the heating is conducted through the heating rods 3 to the heating holes to heat and fuse the 3D printing filament. The heating rods are temperature-controllable and safe. Heating within the pipe reduces protrusions caused by heating. Furthermore, a polishing area 5 and a chip removal hole 4 are provided. The polishing holes in the polishing area allow for polishing of the heated and fused 3D printing filament, effectively reducing protrusions caused by heating.
[0027] Specifically, the pliers head includes a first sub-pliers head and a second sub-pliers head. The grinding hole, chip removal hole 4, and heating hole are all distributed on the end faces of the first sub-pliers head and the second sub-pliers head that are close to each other.
[0028] That is, the grinding hole and the heating hole are both semi-cylindrical structures on the end faces of the first and second sub-clamps. When the first and second sub-clamps are combined, they form an integral cylindrical structure that can be matched with the shape of the 3D printing consumables to achieve clamping.
[0029] The grinding hole and the heating hole extend in the same direction as the end faces of the first and second sub-pliers that are close to each other.
[0030] The chip removal hole 4 extends perpendicularly to the extension direction of the end faces of the first and second sub-pliers that are close to each other, and connects the grinding hole and the heating hole.
[0031] That is, the grinding holes and heating holes are distributed along the longitudinal direction of the first and second sub-clamps, and the chip removal hole 4 is perpendicular to the plane direction of the first and second sub-clamps; the clamped 3D printing consumables also extend along the longitudinal plane of the first and second sub-clamps.
[0032] Preferably, the horizontal plane where the grinding hole and the heating hole are located is above the horizontal plane where the rotating opening and closing part is located, that is, a stepped connection is formed between the pliers head part and the rotating opening and closing part, and the pliers head part protrudes relative to the rotating opening and closing part.
[0033] This allows for easy wiring of 3D printing filaments, with the remaining filaments being led out from above the rotating opening.
[0034] The heating rod 3 is connected to a power supply, and the heating rod 3 is heated by the power supply. Preferably, a thermostat can also be set to control the temperature of the heating rod 3.
[0035] Optionally, the walls of the grinding holes can have a serrated texture, or they can have a spiral or mesh texture, etc. There is no single limitation, as long as it can grind the surface of the 3D printing filament.
[0036] Optionally, the rotating opening and closing part includes a first rotating part and a second rotating part that are rotatably connected, and a spring is connected between the first rotating part and the second rotating part, with the opening and closing controlled by the intermediate spring.
[0037] The grip is also divided into a first grip and a second grip. The first rotating part is connected to the first sub-clamp head and the first grip, and the second rotating part is connected to the second sub-clamp head and the second grip.
[0038] Optionally, the heating rod 3 is perpendicular to the surface of the pliers head and extends out relative to the surface of the pliers head for easy connection to an external power source.
[0039] Optionally, the clamps are provided with mounting holes for installing the power supply heating rod 3.
[0040] Usage instructions: (e.g.) Figure 3 and 4 As shown, first place the two sections of 3D printing filament 6 into the heating area 5, then close the handle to allow the heating rod 3 to be powered on and heated. Once the interface of the 3D printing filament 6 softens, join them together. Then turn off the power to allow it to cool. After cooling, slightly open the clamps, as shown... Figure 5 As shown, the protrusions caused by heating are polished in polishing area 1, and the polishing debris 4 is discharged through the chip discharge hole.
[0041] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.
Claims
1. A connector for 3D printing consumables, characterized in that, The main body is a pliers structure, comprising a pliers head, a rotating opening and closing part, and a handle connected in sequence. The pliers head has a grinding area (1), a chip removal hole (4) and a heating area (5) arranged sequentially along the center line. The grinding area (1) includes a grinding hole that matches the 3D printing consumable, and the hole wall of the grinding hole has raised textures. The chip removal hole (4) connects the grinding hole and the outside of the pliers head. The heating area (5) includes a heating hole that matches the 3D printing consumable and heating rods (3) located on both sides of the heating hole. The heating rods (3) are fixed by the pliers head. The pliers head is made of a heat-conducting material, and the outer side of the grip is covered with a rubber sleeve (2).
2. A 3D printing consumable connector according to claim 1, characterized in that, The pliers head includes a first sub-pliers head and a second sub-pliers head. The grinding hole, chip removal hole (4) and heating hole are all distributed on the end faces of the first sub-pliers head and the second sub-pliers head that are close to each other.
3. A 3D printing consumable connector according to claim 2, characterized in that, The grinding hole and the heating hole extend in the direction of the end faces of the first and second sub-pliers that are close to each other.
4. A 3D printing consumable connector according to claim 2, characterized in that, The chip removal hole (4) extends perpendicularly to the extension direction of the end faces of the first and second sub-pliers that are close to each other, and connects the grinding hole and the heating hole.
5. A 3D printing consumable connector according to claim 1, characterized in that, The horizontal plane containing the grinding hole and the heating hole is located above the horizontal plane containing the rotating opening and closing part.
6. A 3D printing consumable connector according to claim 1, characterized in that, The heating rod (3) is connected to a power supply.
7. A 3D printing consumable connector according to claim 1, characterized in that, The walls of the polished holes have a serrated texture.
8. A 3D printing consumable connector according to claim 1, characterized in that, The rotating opening and closing part includes a first rotating part and a second rotating part that are rotatably connected, and a spring is connected between the first rotating part and the second rotating part.
9. A 3D printing consumable connector according to claim 1, characterized in that, The heating rod (3) is perpendicular to the surface of the pliers head.
10. A 3D printing consumable connector according to claim 9, characterized in that, The clamp head is provided with mounting holes for installing the power supply heating rod (3).
Citation Information
Patent Citations
3D printing consumable wire connector
CN221756874U
