3D printing wire rod conveying device

Abstract

The utility model discloses a 3D printing wire rod conveying device, which relates to the technical field of 3D printers and comprises a fixed shaft, a wire roller and a wire rod, the fixed shaft is connected with a printer body, the wire rod is wound on the wire roller, the wire roller is movably connected with the fixed shaft, and the 3D printing wire rod conveying device further comprises a limiting mechanism connected with the fixed shaft; the connecting frame is connected with the printer body; the conveying mechanism is connected with the connecting frame; and the broken wire sensing mechanism is connected with the connecting frame and is arranged between the conveying mechanism and the fixed shaft. A wire roller wound with a wire is movably clamped to a fixing shaft 1, a limiting mechanism limits the wire roller, the wire sequentially penetrates through a wire breakage sensing mechanism and a conveying mechanism, the conveying mechanism conveys the wire, and in the conveying process, if the wire breaks, the wire breakage sensing mechanism senses the wire breakage and then controls a printer body, so that the printer stops working; the problem that in the prior art, the wire breakage condition cannot be monitored is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printers, in particular to a 3D printing wire conveying device. Background Art

[0002] 3D printer, also known as three-dimensional printer, is a kind of rapid prototyping process equipment. The working steps of 3D printer are as follows: firstly, the model is built through computer modeling software. If the user has a ready-made model, it can be used directly, such as an animal or a miniature building model, etc. The model is sliced ​​through the software, and then the model is copied to the 3D printer through an SD card or USB flash drive. After the printing settings are made, the printer can print them out.

[0003] The utility model patent with the authorization announcement number CN209023932U discloses a feeding device of a 3D printer, including a housing, a driving mechanism and a feeding assembly, the feeding assembly including a first feeding wheel group and a second feeding wheel group, the first feeding wheel group and the second feeding wheel group are both rotatably arranged inside the housing, the first feeding wheel group and the second feeding wheel group both include a first feeding wheel and a second feeding wheel, and the driving mechanism can drive the first feeding wheel and / or the second feeding wheel to rotate. For the above-mentioned prior art, it is impossible to monitor the wire breakage. When the wire breaks, the printer continues to work, resulting in a waste of resources and easily causing damage to the printer. Therefore, a 3D printing wire conveying device is urgently needed to solve the above-mentioned problems. Summary of the invention

[0004] The purpose of the embodiments of the present utility model is to provide a 3D printing wire conveying device to solve the problems raised in the above-mentioned background technology.

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

[0006] A 3D printing wire conveying device, comprising a fixed shaft, a wire roller and a wire, wherein the fixed shaft is connected to a printer body, the wire is wound on the wire roller, and the wire roller is movably connected to the fixed shaft, and further comprising:

[0007] A limiting mechanism, connected to the fixed shaft, for limiting the position of the line roller;

[0008] A connection frame connected to the printer body;

[0009] A conveying mechanism, connected to the connection frame, for conveying the wire;

[0010] The line break sensing mechanism is connected to the connection frame and is arranged between the conveying mechanism and the fixed shaft. The line break sensing mechanism is electrically connected to the printer body.

[0011] As a further solution of the utility model: the limiting mechanism includes:

[0012] A fixed cylinder connected to the fixed shaft;

[0013] A sliding rod, slidably connected to the fixed cylinder;

[0014] The elastic member 1 is arranged inside the fixed tube, and the bottom end is connected to the fixed tube, and the top end is connected to the bottom end of the sliding rod;

[0015] Fixed arc plates, wherein two groups of the fixed arc plates are provided, the two groups of the fixed arc plates are symmetrically arranged and connected together, and one group of the fixed arc plates is connected to the top end of the sliding rod;

[0016] Rolling ball one is rotatably connected with the fixed arc plate.

[0017] As a further solution of the utility model: the conveying mechanism includes:

[0018] A fixed wheel, rotatably connected to the connection frame, and the fixed wheel is connected to the output end of the driving member;

[0019] A fixed folding rod is rotatably connected to the fixed wheel and is connected to the connecting frame;

[0020] A sliding folding rod, slidably connected to the fixed folding rod;

[0021] A rotating wheel is rotatably connected to the top of the sliding folding rod;

[0022] The second elastic member is arranged inside the fixed folding rod, and the bottom end is connected to the fixed folding rod, and the top end is connected to the bottom end of the sliding folding rod.

[0023] As a further solution of the utility model: the disconnection sensing mechanism includes:

[0024] A limiting ring connected to the connection frame;

[0025] A connecting rod connected to the limiting ring;

[0026] A rotating sleeve, rotatably connected to the connecting rod;

[0027] The volute spring is arranged inside the rotating sleeve, and one end of the volute spring is connected to the connecting rod, and the other end of the volute spring is connected to the rotating sleeve;

[0028] A fixed rod connected to the rotating sleeve;

[0029] The sensor is connected to the limit ring and is electrically connected to the printer body.

[0030] Compared with the prior art, the beneficial effects of the utility model are:

[0031] The wire roller wound with the wire is movably clamped on the fixed shaft 1, and the limiting mechanism limits the wire roller. The wire passes through the wire breakage sensing mechanism and the conveying mechanism in sequence, and the conveying mechanism conveys the wire. During the conveying process, if the wire breaks, the wire breakage sensing mechanism senses it and controls the printer body to stop the printer, thereby solving the problem that the wire breakage cannot be monitored in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a 3D printing wire conveying device in an embodiment of the utility model.

[0033] Figure 2 It is a structural schematic diagram of the limiting mechanism in the embodiment of the utility model.

[0034] Figure 3 Schematic diagram of the structure of the disconnection sensing mechanism in the embodiment of the utility model.

[0035] In the figure: 1. fixed shaft; 2. wire roller; 3. wire; 4. fixed cylinder; 5. elastic part 1; 6. sliding rod; 7. fixed arc plate; 8. rolling ball 1; 9. connecting frame; 10. fixed wheel; 11. fixed folding rod; 12. sliding folding rod; 13. rotating wheel; 14. elastic part 2; 15. limiting ring; 16. rolling ball 2; 17. connecting rod; 18. rotating sleeve; 19. spiral spring; 20. fixed rod; 21. sensor. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In the present utility model embodiment, please refer to Figures 1 to 3 A 3D printing wire conveying device comprises a fixed shaft 1, a wire roller 2 and a wire 3, wherein the fixed shaft 1 is connected to a printer body, the wire 3 is wound on the wire roller 2, and the wire roller 2 is movably connected to the fixed shaft 1, and further comprises:

[0038] A limiting mechanism, connected to the fixed shaft 1, for limiting the position of the line roller 2;

[0039] A connection frame 9, connected to the printer body;

[0040] A conveying mechanism, connected to the connecting frame 9, for conveying the wire 3;

[0041] The disconnection sensing mechanism is connected to the connection frame 9 and is disposed between the conveying mechanism and the fixed shaft 1 . The disconnection sensing mechanism is electrically connected to the printer body.

[0042] The wire roller 2 wound with the wire 3 is movably clamped on the fixed shaft 1, and the limiting mechanism limits the wire roller 2. The wire 3 passes through the wire breakage sensing mechanism and the conveying mechanism in sequence, and the conveying mechanism conveys the wire 3. During the conveying process, if the wire 3 breaks, the wire breakage sensing mechanism senses it and controls the printer body to stop working.

[0043] As an embodiment of the present invention, please refer to Figure 1 and Figure 2 , the limiting mechanism comprises:

[0044] A fixed cylinder 4 connected to the fixed shaft 1;

[0045] The sliding rod 6 is slidably connected to the fixed cylinder 4;

[0046] The elastic member 1 5 is arranged inside the fixed tube 4, and the bottom end is connected to the fixed tube 4, and the top end is connected to the bottom end of the sliding rod 6;

[0047] Fixed arc plates 7, wherein two groups of the fixed arc plates 7 are provided, the two groups of the fixed arc plates 7 are symmetrically arranged and connected together, and one group of the fixed arc plates 7 is connected to the top end of the sliding rod 6;

[0048] The rolling ball 8 is rotatably connected to the fixed arc plate 7.

[0049] Pull the sliding rod 6, and then drive the fixed arc plate 7 to move, so that the line roller 2 is movably connected to the fixed shaft 1, and the line roller 2 is located between the two sets of fixed arc plates 7. Loosen the sliding rod 6, and under the reaction force of the elastic member 5, the fixed arc plate 7 moves downward to limit the line roller 2. The setting of the rolling ball 8 ensures that the line roller 2 rotates smoothly. The elastic member 5 can be a spring, a spring, etc.

[0050] As an embodiment of the present invention, please refer to Figure 1 , the conveying mechanism comprises:

[0051] A fixed wheel 10 is rotatably connected to the connecting frame 9, and the fixed wheel 10 is connected to the output end of the driving member;

[0052] A fixed folding rod 11 is rotatably connected to the fixed wheel 10 and is connected to the connecting frame 9;

[0053] The sliding folding rod 12 is slidably connected to the fixed folding rod 11;

[0054] A rotating wheel 13 is rotatably connected to the top of the sliding folding rod 12;

[0055] The second elastic member 14 is disposed inside the fixed folding rod 11 , and its bottom end is connected to the fixed folding rod 11 , and its top end is connected to the bottom end of the sliding folding rod 12 .

[0056] Pull the sliding folding rod 12 to disengage the rotating wheel 13 from the fixed wheel 10, pass the wire 3 between the rotating wheel 13 and the fixed wheel 10, release the sliding folding rod 12, and under the reaction force of the elastic member 14, the rotating roller 13 moves to cooperate with the fixed wheel 10 to limit the wire 3, and the driving member (not shown) drives the fixed wheel 10 to rotate, thereby conveying the wire 3. The driving member can be a stepping motor, a servo motor, etc.

[0057] As an embodiment of the present invention, please refer to Figure 1 and Figure 3 , the disconnection sensing mechanism comprises:

[0058] A limiting ring 15 connected to the connecting frame 9;

[0059] A connecting rod 17 connected to the limiting ring 15;

[0060] The rotating sleeve 18 is rotatably connected to the connecting rod 17;

[0061] The spiral spring 19 is arranged inside the rotating sleeve 18, and one end of the spiral spring 19 is connected to the connecting rod 17, and the other end of the spiral spring 19 is connected to the rotating sleeve 18;

[0062] A fixed rod 20 connected to the rotating sleeve 18;

[0063] The sensor 21 is connected to the limit ring 15 and is electrically connected to the printer body.

[0064] In the initial state, the fixed rod 20 blocks the passage between the two sets of limit rings 15. When the wire 3 is transported, the fixed rod 20 is first rotated to pass the wire 3 through the limit ring 15, and then the fixed rod 20 is loosened. Under the action of the spiral spring 19, the fixed rod 20 is abutted against the wire 3, and the wire 3 limits the rotation of the fixed rod 20, and the fixed rod 20 is disengaged from the sensor 21. When the wire 3 is disconnected, under the action of the spiral spring 19, the fixed rod 20 is rotated to abut against the sensor 21, and the sensor 21 senses the signal and controls the printer body to stop working.

[0065] As an embodiment of the present invention, please refer to Figure 1 and Figure 3 , also includes:

[0066] The rolling ball 2 16 is rotatably connected to the limiting ring 15 .

[0067] The rolling ball 16 is provided to facilitate the movement of the wire 3 and ensure smooth transportation of the wire 3.

[0068] The working principle of the utility model is: pull the sliding rod 6, thereby driving the fixed arc plate 7 to move, so that the wire roller 2 is movably connected to the fixed shaft 1, and the wire roller 2 is located between the two groups of fixed arc plates 7, and the sliding rod 6 is released. Under the reaction force of the elastic member 5, the fixed arc plate 7 moves downward to limit the wire roller 2. In the initial state, the fixed rod 20 blocks the channel between the two groups of limiting rings 15. When the wire 3 is transported, the fixed rod 20 is first rotated to pass the wire 3 through the limiting ring 15, and then the fixed rod 20 is released. Under the action of the spiral spring 19, the fixed rod 20 is abutted against the wire 3, and the wire 3 limits the fixed rod 2 0 rotates, the fixed rod 20 is disengaged from the sensor 21, the sliding folding rod 12 is pulled, the rotating wheel 13 is disengaged from the fixed wheel 10, the wire 3 is passed between the rotating wheel 13 and the fixed wheel 10, the sliding folding rod 12 is loosened, and the rotating roller 13 moves under the reaction force of the elastic member 14, and cooperates with the fixed wheel 10 to limit the wire 3, and the driving member (not shown) drives the fixed wheel 10 to rotate, thereby conveying the wire 3. When the wire 3 is disconnected, under the action of the spiral spring 19, the fixed rod 20 is rotated to abut against the sensor 21, the sensor 21 senses the signal, and controls the printer body to stop working.

[0069] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0070] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A 3D printing wire conveying device, comprising a fixed shaft, a wire roller and a wire, wherein the fixed shaft is connected to a printer body, the wire is wound on the wire roller, and the wire roller is movably connected to the fixed shaft, characterized in that: Also includes: A limiting mechanism, connected to the fixed shaft, for limiting the position of the line roller; A connection frame connected to the printer body; A conveying mechanism, connected to the connection frame, for conveying the wire; The line break sensing mechanism is connected to the connection frame and is arranged between the conveying mechanism and the fixed shaft. The line break sensing mechanism is electrically connected to the printer body.

2. A 3D printing wire conveying device according to claim 1, characterized in that: The limiting mechanism comprises: A fixed cylinder connected to the fixed shaft; A sliding rod, slidably connected to the fixed cylinder; The elastic member 1 is arranged inside the fixed tube, and the bottom end is connected to the fixed tube, and the top end is connected to the bottom end of the sliding rod; Fixed arc plates, wherein two groups of the fixed arc plates are provided, the two groups of the fixed arc plates are symmetrically arranged and connected together, and one group of the fixed arc plates is connected to the top end of the sliding rod; The rolling ball one is rotatably connected with the fixed arc plate.

3. A 3D printing wire conveying device according to claim 1, characterized in that: The conveying mechanism comprises: A fixed wheel, rotatably connected to the connection frame, and the fixed wheel is connected to the output end of the driving member; A fixed folding rod is rotatably connected to the fixed wheel and is connected to the connecting frame; A sliding folding rod, slidably connected to the fixed folding rod; A rotating wheel is rotatably connected to the top of the sliding folding rod; The second elastic member is arranged inside the fixed folding rod, and the bottom end is connected to the fixed folding rod, and the top end is connected to the bottom end of the sliding folding rod.

4. A 3D printing wire conveying device according to claim 1, characterized in that: The disconnection sensing mechanism comprises: A limiting ring connected to the connecting frame; A connecting rod connected to the limiting ring; A rotating sleeve, rotatably connected to the connecting rod; The volute spring is arranged inside the rotating sleeve, and one end of the volute spring is connected to the connecting rod, and the other end of the volute spring is connected to the rotating sleeve; A fixed rod connected to the rotating sleeve; The sensor is connected to the limit ring and is electrically connected to the printer body.

5. A 3D printing wire conveying device according to claim 4, characterized in that: Also includes: Rolling ball 2 is rotatably connected with the limiting ring.

Images