Consumable reset mechanism for 3D printing and 3D printer

Abstract

The utility model relates to the technical field of 3D printing, and provides a consumable reset mechanism for 3D printing and a 3D printer, the consumable reset mechanism for 3D printing comprises a tray, the tray is provided with a consumable reset device, and the consumable reset device is configured to drive a consumable disc to rotate in the reverse feeding direction when feeding of the consumable disc is finished. The consumable reset device is arranged, power is provided for the consumable reset device when the consumables are fed, the tray support can be driven to rotate in the direction opposite to the feeding direction when feeding is finished, the returned and withdrawn consumables are rotated and tightened on the consumable tray, and therefore the problem that the consumables are loosened and knotted due to returning is fundamentally avoided; consumable materials can be prevented from moving everywhere during material returning and tightening. A plurality of trays can be connected, and each tray can be connected with consumable trays of different models, different colors and different sizes, so that the multi-color printing requirement of a multi-color printer is met.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, and in particular to a consumable material resetting mechanism for 3D printing and a 3D printer. Background Art

[0002] 3D printing technology is widely used in all walks of life, but for 3D printers based on the principle of fused deposition modeling, the material return process after feeding and printing will make the filaments on the material tray loose, which will lead to the problem of filaments getting tangled. In view of this, a filament resetting mechanism for 3D printing is designed to fundamentally avoid the problem of filaments getting tangled due to the material return process. Utility Model Content

[0003] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0004] The utility model provides a consumable material resetting mechanism for 3D printing, comprising a tray, on which a consumable material resetting device is arranged, and the consumable material resetting device is configured to drive the consumable material tray to rotate in a reverse feeding direction when the consumable material tray feeding is finished.

[0005] Furthermore, a baffle is provided on the tray, and the baffle can be arranged on the baffle in a semi-enclosed manner or in a fully-enclosed manner.

[0006] Furthermore, the tray is provided with a placement column, and a limiter is sleeved on the placement column, and the limiter is configured to allow the consumable hose to pass through and limit it. Specifically, in order not to affect the rotation of the consumable tray on the tray, the tray is provided with a protruding end, and the placement column is arranged on the protruding end.

[0007] Furthermore, the surface of the placement column is coated with a friction-reducing coating, and the coating includes PTFE or POM or nylon.

[0008] Furthermore, the limit member is provided with a groove for the consumable hose to pass through. Specifically, the limit member includes a first limit member end and a second limit member end, and a groove is provided between the first limit member end and the second limit member end of the limit member; in order to reduce the friction of the consumable hose when passing through the limit member, the limit member may also include a first limit member end, a second limit member end and a third limit member end, the first limit member end and the second limit member end are both sleeved on the placement column, and the third limit member end is arranged on the same side of the first limit member end and the second limit member end, and is respectively connected to the first limit member end and the second limit member end, and forms a groove with them for the consumable hose to pass through, because the surface of the placement column is coated with a friction reducing coating, the consumable hose directly contacts the coating in the groove, thereby reducing the friction with the placement column or the limit member during limiting.

[0009] Furthermore, the consumables resetting mechanism includes a connector, and the connector is configured to connect at least two trays. Specifically, each tray is provided with a connecting hole near the baffle, and the connector is arranged in the connecting hole for connecting multiple trays, and each tray can be connected to consumables trays of different models, colors, and sizes to meet the multi-color printing requirements of the multi-color printer.

[0010] Furthermore, the tray is provided with a guide hole, and a guide assembly is provided in the guide hole, and the guide assembly includes a universal bearing or a self-lubricating guide wheel or a rolling bearing. When the consumables reset mechanism is provided with multiple trays, the guide assembly on the tray at the bottom layer is a self-lubricating guide wheel, and the guide assemblies on the remaining trays can be universal bearings or self-lubricating guide wheels or rolling bearings. The tray at the bottom layer can also be provided with a handle to facilitate pulling the entire consumables reset mechanism out of the printer.

[0011] Furthermore, a connecting shaft is provided on the tray, and a first placement groove is provided in the middle portion of the connecting shaft.

[0012] Furthermore, the consumable material resetting device includes a bottom cover, a tray support, an outer rotating shaft, an inner rotating shaft, a clockwork mechanism and a clockwork cover;

[0013] The outer rotating shaft and the material tray bracket are sequentially sleeved on the connecting shaft, the bottom cover is also sleeved on the connecting shaft and fixedly connected to the material tray bracket, the inner rotating shaft is arranged in the first placement groove and fixed thereto; one end of the clockwork mechanism is connected to the inner rotating shaft, and the other end is connected to the outer rotating shaft, and the clockwork cover is fixedly connected to the material tray bracket.

[0014] Furthermore, a first elastic member is disposed in the bottom cover, and the first elastic member is configured to provide friction force for the outer rotating shaft.

[0015] Furthermore, the tray bracket is provided with fins and a second elastic member, the fins and the second elastic member are connected, and the fins are configured to expand and contract under the action of the second elastic member to adapt to consumable trays of different specifications.

[0016] The present invention provides a 3D printer, wherein the above-mentioned consumable passive resetting mechanism is provided in the 3D printer.

[0017] The utility model has the following beneficial effects:

[0018] (1) The utility model is provided with a consumable material reset device, which provides power for the consumable material reset device when the consumable material is fed. When the feeding is finished, the material tray bracket can be driven to rotate in the opposite feeding direction, and the consumable material that is returned and discharged can be rotated and tightened on the consumable tray, thereby fundamentally avoiding the problem of the consumable material becoming loose and causing knots, and a baffle is provided on the tray to prevent the consumable material from running around when the consumable material is returned and tightened.

[0019] (2) The tray of the utility model (3) The tray of the utility model is also provided with a limiter for the consumable hose to pass through, further preventing the consumables from loosening and causing knots;

[0020] (4) The utility model can be connected by multiple trays, each of which can be connected to consumable trays of different models, colors, and sizes to meet the multi-color printing requirements of a multi-color printer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the consumables resetting mechanism of Example 1.

[0022] Figure 2 It is a schematic diagram of the consumables resetting mechanism of Example 2.

[0023] Figure 3 It is a schematic diagram of the mechanism of the limiting member in Example 2.

[0024] Figure 4 This is a schematic diagram of the consumables reset mechanism in Example 3

[0025] Figure 5 It is an exploded view of the consumables resetting mechanism in Example 4.

[0026] Figure 6 It is a cross-sectional view of the tray support in Example 4. DETAILED DESCRIPTION

[0027] The specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. It should be pointed out that the embodiments are only specific explanations of the utility model and should not be regarded as limitations of the utility model. The purpose of the embodiments is to enable those skilled in the art to better understand and reproduce the technical solutions of the utility model. The protection scope of the utility model shall still be based on the scope defined in the claims.

[0028] Example 1

[0029] like Figure 1 As shown, this embodiment provides a consumable resetting mechanism for 3D printing, including a tray 1, on which a consumable resetting device 3 is provided, and a consumable tray 4 is placed on the tray 1, and the consumable resetting device 3 is configured to drive the consumable tray 4 to rotate in the reverse feeding direction when the feeding of the consumable tray 4 is completed.

[0030] Example 2

[0031] like Figure 2As shown, this embodiment provides a consumable resetting mechanism for 3D printing. On the basis of Example 1, a baffle is provided on the tray. The baffle can be arranged on the baffle in a semi-enclosed manner or in a fully enclosed manner. The baffle 2 is configured to confine the consumables within the baffle 2 area when the consumable resetting device 3 performs consumable resetting.

[0032] Example 3

[0033] like Figure 2 As shown, this embodiment provides a consumable material resetting mechanism for 3D printing. Based on Example 1 and / or Example 2, the tray 1 is provided with a placement column 11, and the placement column 11 is sleeved with a limiter 12, and the limiter 12 is configured to allow the consumable material hose to pass through and limit it. Specifically, in order not to affect the rotation of the consumable material tray 4 on the tray 1, the tray 1 is provided with a protruding end 10, and the placement column 11 is arranged on the protruding end 10.

[0034] The stopper 12 is provided with a slot 120 for the consumable hose to pass through. Specifically, the stopper includes a first stopper end and a second stopper end. A slot is provided between the first stopper end and the second stopper end of the stopper; Figure 3 As shown, in order to reduce the friction of the consumable hose when passing through the limiter, the limiter 12 may also include a first limiter end 121, a second limiter end 122 and a third limiter end 123, wherein the first limiter end 121 and the second limiter end 122 are both sleeved on the placement column 11, and the third limiter end 123 is arranged on the same side of the first limiter end 121 and the second limiter end 122, and are respectively connected to the first limiter end 121 and the second limiter end 122, and form a groove 120 therewith for the consumable hose to pass through, since the surface of the placement column 11 is coated with a friction-reducing coating to reduce friction, the coating includes PTFE or POM or nylon; the consumable hose is directly in contact with the coating in the groove 120, thereby reducing the friction with the placement column 11 or the limiter 12 during limiting.

[0035] The tray 1 is provided with a guide hole 13 , and a guide assembly 5 is arranged in the guide hole 13 . The guide assembly 5 includes a universal bearing, a self-lubricating guide wheel, or a rolling bearing.

[0036] Example 3

[0037] like Figure 4As shown, this embodiment provides a consumable material reset mechanism for 3D printing, the consumable material reset mechanism includes a connector 6, and the connector 6 is configured to connect at least two trays 1. Specifically, each tray 1 is provided with a connection hole near the baffle 2, and the connector 6 is arranged in the connection hole for connecting multiple trays 1. Each tray 1 can be connected to consumable trays of different models, colors, and sizes to meet the multi-color printing requirements of a multi-color printer. Each layer of tray 1 is provided with the same structure as that of embodiment 1 or embodiment 2.

[0038] When the consumables resetting mechanism is provided with multiple trays 1, the guide assembly on the tray at the bottom layer is a self-lubricating guide wheel, and the guide assemblies on the remaining trays can be universal bearings or self-lubricating guide wheels or rolling bearings. A handle 14 can also be provided on the tray 1 at the bottom layer to facilitate pulling the entire consumables resetting mechanism out of the printer.

[0039] Example 4

[0040] This embodiment provides a consumables resetting device, which is arranged in the consumables resetting mechanism in embodiment 1, embodiment 2 or embodiment 3. The consumables resetting device 3 is configured to drive the consumables tray 4 to rotate in the reverse feeding direction when the feeding of the consumables tray 4 is completed.

[0041] like Figure 5 As shown, the consumable material resetting device 3 includes a bottom cover 31, a material tray bracket 32, an outer rotating shaft 33, an inner rotating shaft 34, a spring mechanism 35 and a spring cover 36; a connecting shaft 15 is provided on the tray 1, and a first placement groove 151 is provided in the middle part of the connecting shaft 15.

[0042] The outer rotating shaft 33 and the material tray bracket 32 ​​are sequentially sleeved on the connecting shaft 15, the bottom cover 31 is also sleeved on the connecting shaft 15 and fixedly connected to the material tray bracket 32, the inner rotating shaft 34 is arranged in the first placement groove 151 and fixed thereto; one end of the clockwork mechanism 35 is connected to the inner rotating shaft 34, and the other end is connected to the outer rotating shaft 33, the clockwork mechanism 35 can be a clockwork or a torsion spring; the clockwork cover 36 is fixedly connected to the material tray bracket 32, and the clockwork cover 36 and the material tray bracket 32 ​​can be connected by other connection methods such as snap connection or threaded connection to restrict the clockwork mechanism in the material tray bracket.

[0043] Preferably, the material tray bracket 32 ​​matches the shape of the shaft portion of the consumable tray 4, and the material tray bracket 32 ​​can be placed in the shaft portion of the consumable tray 4 and detachably connected thereto;

[0044] like Figure 6As shown, the material tray bracket 32 ​​is provided with a fin 321 and a second elastic member 322 , and the fin 321 and the second elastic member 322 are connected. The fin 321 is configured to expand and contract under the action of the second elastic member 322 to adapt to consumable trays 4 of different specifications.

[0045] A first elastic member 311 is disposed in the bottom cover 31 , and the first elastic member 311 is configured to provide friction force for the outer shaft. Specifically, the bottom cover 31 is provided with a second placement groove 312, and the first elastic member 311 is placed in the second placement groove 312 and fixed thereto; the outer shaft 33 is sleeved on the connecting shaft 15; the first elastic member 311 is fixed on the bottom cover 31, so that the first elastic member 311 will rotate coaxially relative to the connecting shaft of the tray 1, and the first elastic member 311 provides a relatively certain friction force to drive the outer shaft 33 to rotate, and the first elastic member 311 can be a spring sheet, and the inner shaft 34 is arranged in the first placement groove 151 and fixed thereto, and the fixing method can be directly fixed by fasteners or by buckles. Specifically, a buckle 152 can be provided on the side of the connecting shaft 15, and a buckle is provided on the inner shaft 34, and the buckle is configured in the buckle 152, and the number of the buckle 152 and the buckle is consistent, and there are at least two buckle 152 or buckles to ensure that the inner shaft 34 can be fixed in the first placement groove 151.

[0046] The outer shaft 33 is configured to stop rotating when the friction force provided by the first elastic member 311 is less than the elastic force applied to the clockwork mechanism 35. Since one end of the clockwork mechanism 35 is connected to the inner shaft 34 and the other end is connected to the outer shaft 33, the outer shaft rotates when the consumables are fed, while the inner shaft 34 does not move, and the clockwork mechanism 35 is tightened until the elastic force generated by the tightening of the clockwork mechanism 35 is greater than the friction force provided by the first elastic member 311, and the outer shaft 33 is no longer driven to rotate by the first elastic member 311; the consumable tray, the tray bracket, the bottom cover, and the first elastic member 311 are pulled to continue rotating as the consumables continue to be fed. During the feeding process, the elastic force provided by the clockwork mechanism 35 to the outer shaft 33 and the friction force provided by the clockwork mechanism 35 to the inner shaft 34 are greater than the friction force provided by the first elastic member 311. The first elastic member 311 provides an equal dynamic friction force to the outer shaft 33; when the material is withdrawn, the pulling force of the feeding motor is lost, and the elastic force of the clockwork mechanism 35 is released, driving the outer shaft 33 to rotate; because there is friction between the first elastic member 311, the first elastic member 311 is driven to rotate, and because the first elastic member 311 is fixed on the bottom cover 31, the bottom cover 31 is fixed on the material tray bracket 32, and the consumable tray 4 is installed on the material tray bracket 32, therefore, under the action of the clockwork mechanism 35, the consumable tray 4 is driven to rotate in the reverse feeding direction to tighten the consumables.

[0047] The working principle is as follows: the consumable tray 4 is detachably connected to the tray bracket 32. When the consumable tray 4 rotates under the action of the feeding motor, the tray bracket 32 ​​is driven to rotate. Since the tray bracket 32 ​​and the bottom cover 31 are fixed, the spring (first elastic member 311) is fixed on the bottom cover 31, so the spring (first elastic member 311) will also rotate coaxially with respect to the connecting shaft 15 of the tray 1. The spring (first elastic member 311) will provide a relatively certain friction force to drive the outer shaft 33 to rotate. The outer shaft 33 is fixed with a spring (spring mechanism 35). The other end of the spring (spring mechanism 35) is fixed on the inner shaft 34. Because the buckle of the inner shaft 34 is set in the slot 152 during operation, the outer shaft 33 rotates when the consumables are fed, and the inner shaft 34 does not move. The spring (spring mechanism 35) is tightened until the elastic force generated by the spring (spring mechanism 35) due to tightening is greater than the friction force provided by the spring sheet (first elastic member 311). Because one end of the spring (spring mechanism 35) is fixed on the inner shaft 34, the inner shaft 34 is fixed on the tray 1, and the other end is fixed on the outer shaft 33, the rotation of the outer shaft 33 The outer shaft 33 is no longer driven to rotate by the spring (first elastic member 311), and the consumable tray 4, the tray bracket 32, the bottom cover 31 and the spring (first elastic member 311) are pulled to continue rotating as the consumables continue to be fed. During the continuous feeding process, the elastic force provided by the spring (spring mechanism 35) to the outer shaft 33 is equal to the dynamic friction force provided by the spring (first elastic member 311) to the outer shaft 33; when the material is withdrawn, the pulling force of the feeding motor is lost, and the elastic force of the spring (spring mechanism 35) The outer shaft 33 is released to rotate. The outer shaft 33 has friction with the spring (first elastic member 311), which drives the spring (first elastic member 311) to rotate. Since the spring (first elastic member 311) is fixed on the bottom cover 31, and the bottom cover 31 is fixed on the material tray bracket 32, and the material tray bracket 32 ​​is connected to the consumable tray 4, the elastic force of the spring (spring mechanism 35) is released when the material is withdrawn, driving the consumable tray 4 to rotate in the opposite direction of the feeding direction, and the withdrawn consumables are rotated and tightened on the consumable tray 4, thereby fundamentally avoiding the problem of loose consumables causing knots.

[0048] Example 5

[0049] This embodiment provides a consumables resetting device, which is arranged in the consumables resetting mechanism in embodiment 1, embodiment 2 or embodiment 3. The consumables resetting device 3 is configured to drive the consumables tray 4 to rotate in the reverse feeding direction when the feeding of the consumables tray 4 is completed.

[0050] The consumable material resetting device 3 includes a bottom cover 31, a material tray bracket 32, a clockwork mechanism 35 and a clockwork cover 36; a connecting shaft 15 is provided on the tray 1, and the bottom cover and the material tray bracket are both sleeved on the connecting shaft 15, and the material tray bracket 32 ​​matches the shaft shape of the consumable material tray 4, and the material tray bracket 32 ​​can be placed in the shaft of the consumable material tray 4 and detachably connected thereto; a fin 321 and a second elastic member 322 are provided on the material tray bracket 32, and the fin 321 and the second elastic member 322 are connected, and the fin 321 is configured to expand and contract under the action of the second elastic member 322 to adapt to consumable material trays 4 of different specifications.

[0051] The spring cover 36 and the tray support 32 can be connected by snap connection or thread connection or other connection methods. The spring mechanism 35 is arranged on the spring cover 36, and the spring mechanism 35 includes a motor, and the driving shaft of the motor is connected to the connecting shaft. When the feeding is completed, the motor directly drives the tray 1 to drive the consumable tray 4 to rotate and tighten the consumables on the consumable tray.

[0052] The working principle is: when feeding, the motor (clockwork mechanism 35) is not powered, and the consumable tray 4 and the tray bracket 32 ​​are dragged and rotated by the feeding motor (clockwork mechanism 35); when returning the material, the motor (clockwork mechanism 35) drives the connecting shaft 15 to move in the opposite direction, pulls back the material tray, tightens the consumables already in the feeding channel, and resets the consumables on the consumable tray 4, thereby fundamentally avoiding the problem of loose consumables causing knots when returning the material.

[0053] Example 6

[0054] This embodiment provides a 3D printer, in which the consumable passive resetting mechanism of Embodiment 1, Embodiment 2, Embodiment 3, Embodiment 4 or Embodiment 5 is provided.

[0055] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0056] It should be noted that the technical features not described in detail in the present invention can be achieved by any existing technology.

Claims

1. A consumables resetting mechanism for 3D printing, characterized in that: It includes a tray, on which a consumable material resetting device is provided, and the consumable material resetting device is configured to drive the consumable material tray to rotate in the reverse feeding direction when the consumable material tray feeding is finished; The tray is provided with a placing column, and a limiting member is sleeved on the placing column. The limiting member is configured to allow the consumable hose to pass through and limit the consumable hose.

2. A consumables resetting mechanism for 3D printing according to claim 1, characterized in that: A baffle is provided on the tray.

3. A consumables resetting mechanism for 3D printing according to claim 1, characterized in that: The surface of the placement column is coated with a friction-reducing coating.

4. A consumables resetting mechanism for 3D printing according to claim 1, characterized in that: The limiting member is provided with a slot for the consumable hose to pass through.

5. The consumable material resetting mechanism for 3D printing according to claim 1, characterized in that: The consumable material resetting mechanism includes a connecting member configured to connect at least two trays.

6. A consumable material resetting mechanism for 3D printing according to claim 1, characterized in that: The tray is provided with a guide hole, and a guide assembly is arranged in the guide hole. The guide assembly includes a universal bearing, a self-lubricating guide wheel or a rolling bearing.

7. A consumables resetting mechanism for 3D printing according to claim 1, characterized in that: The tray is provided with a connecting shaft, and the middle part of the connecting shaft is provided with a first placement groove.

8. A consumable material resetting mechanism for 3D printing according to claim 7, characterized in that: The consumable material resetting device comprises a bottom cover, a material tray support, an outer rotating shaft, an inner rotating shaft, a spring mechanism and a spring cover; The outer rotating shaft and the material tray bracket are sequentially sleeved on the connecting shaft, the bottom cover is also sleeved on the connecting shaft and fixedly connected to the material tray bracket, the inner rotating shaft is arranged in the first placement groove and fixed thereto; one end of the clockwork mechanism is connected to the inner rotating shaft, and the other end is connected to the outer rotating shaft, and the clockwork cover is fixedly connected to the material tray bracket.

9. A consumable material resetting mechanism for 3D printing according to claim 8, characterized in that: A first elastic member is disposed inside the bottom cover, and the first elastic member is configured to provide friction force for the outer rotating shaft.

10. A consumable material resetting mechanism for 3D printing according to claim 8, characterized in that: The tray bracket is provided with a fin and a second elastic member, the fin and the second elastic member are connected, and the fin is configured to expand and contract under the action of the second elastic member to adapt to consumable trays of different specifications.

11. A 3D printer, characterized in that: The 3D printer is provided with the consumable passive resetting mechanism described in any one of claims 1-10.

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