A passive resetting mechanism for consumables used in 3D printing and a 3D printer
By designing a passive reset mechanism for consumables including pallets, tray brackets and power accumulators in a 3D printer, the problem of loose consumables wires during the material removal process is solved, and effective resetting of consumables and stability of printing process is achieved.
Patent Information
- Application Number
- CN202420331120.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2023-12-20
- Filing Date
- 2024-02-22
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-02-22
AI Technical Summary
During the material removal process of 3D printers, the consumable wires are likely to become loose, resulting in knotting problems.
A passive reset mechanism for consumables is designed, including a pallet, a tray bracket and a power storage mechanism. When the feeding of the consumable tray is completed, the accumulator drives the material tray support to rotate in the reverse feeding direction, tightening the consumables to prevent knotting.
It effectively avoids the knotting problem caused by loose consumable wire during material removal, and ensures the neatness and smooth feeding of consumables.
Smart Images
Figure CN222742162U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of 3D printing, in particular to a 3D printer with a consumable passive resetting mechanism for 3D printing. 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 passive resetting mechanism for filaments used in 3D printing is designed to fundamentally avoid the problem of filaments getting tangled during 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 passive resetting mechanism for consumables used in 3D printing, comprising a tray, a tray support and a force storage mechanism, wherein the tray is provided with a connecting shaft, the force storage mechanism and the tray support are sequentially sleeved on the connecting shaft, the force storage mechanism is arranged in the tray support, and the force storage mechanism is configured to drive the tray support to rotate in the reverse feeding direction when the consumable tray feeding is finished.
[0005] Preferably, the material tray bracket matches the shape of the shaft portion of the consumable tray, and the material tray bracket can be placed in the shaft portion of the consumable tray and detachably connected thereto.
[0006] Furthermore, a first placement groove is provided in the middle portion of the connecting shaft.
[0007] Furthermore, the force storage mechanism includes a bottom cover, and the bottom cover is fixedly connected to the tray bracket, specifically, can be connected by fasteners.
[0008] Furthermore, the force storage mechanism also includes an outer rotating shaft, which is placed above the first elastic member and sleeved on the connecting shaft.
[0009] 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.
[0010] 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.
[0011] Furthermore, the force storage mechanism also includes an inner rotating shaft, which is arranged in the first placement groove and fixed thereto; the fixing method can be directly fixed by fasteners, or fixed by buckles. Specifically, a buckle can be provided on the side of the connecting shaft, and a buckle is provided on the inner rotating shaft. The buckle is configured in the slot, and the number of the slots and buckles is consistent, and there are at least two slots or buckles to ensure that the inner rotating shaft can be fixed in the first placement groove.
[0012] Furthermore, the power storage mechanism also includes a spring mechanism and a spring cover, and the spring cover is connected to the tray bracket.
[0013] Preferably, the spring cover and the tray support may be connected by other connection methods such as snap connection or threaded connection.
[0014] Furthermore, the clockwork mechanism is arranged on the clockwork cover, and the clockwork mechanism includes a motor, and the driving shaft of the motor is connected to the connecting shaft. When the feeding is completed, the motor is used to directly drive the tray to drive the consumable tray to rotate and tighten the consumables on the consumable tray.
[0015] Furthermore, 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 mechanism includes a clockwork spring or a torsion spring.
[0016] Furthermore, the outer rotating shaft is configured to stop rotating when the friction force provided by the first elastic member is smaller than the elastic force exerted on the clockwork mechanism. Since one end of the clockwork mechanism is connected to the inner rotating shaft and the other end is connected to the outer rotating shaft, when the consumables are fed, the outer rotating shaft rotates, the inner rotating shaft does not move, and the clockwork mechanism is tightened until the elastic force generated by the tightening of the clockwork mechanism is greater than the friction force provided by the first elastic member, and the outer rotating shaft is no longer driven to rotate by the first elastic member; the consumable tray, the tray bracket, the bottom cover, and the first elastic member are pulled to continue to rotate as the consumables continue to be fed. During the continued feeding process, the elastic force provided by the clockwork mechanism to the outer rotating shaft is equal to the dynamic friction force provided by the first elastic member to the outer rotating shaft; when the material is withdrawn, the pulling force of the feeding motor is lost, the elastic force of the clockwork mechanism is released, and the outer rotating shaft is driven to rotate; because there is friction between the first elastic member, the first elastic member is driven to rotate, and since the first elastic member is fixed on the bottom cover, the bottom cover is fixed on the tray bracket, and the tray bracket is equipped with the consumable tray, the consumable tray is driven to rotate in the opposite feeding direction under the action of the clockwork mechanism to tighten the consumables.
[0017] Furthermore, the tray is provided with a guide hole, and a guide assembly is provided in the guide hole for rotating the consumable tray on the tray, and the guide assembly includes a universal bearing or a self-lubricating guide wheel or a rolling bearing.
[0018] The utility model also provides a 3D printer, in which the above-mentioned consumable passive resetting mechanism is arranged.
[0019] The utility model has the following beneficial effects:
[0020] (1) The utility model is provided with a tray, a material tray bracket and a power storage mechanism. When the consumables are fed, power is provided to the power storage mechanism. When the feeding is completed, the material tray bracket can be driven to rotate in the opposite direction of the feeding, and the consumables that are returned and discharged can be rotated and tightened on the consumable tray, thereby fundamentally avoiding the problem of the consumables becoming loose and causing knots.
[0021] (2) The tray of the utility model is provided with a guide assembly, which can reduce the resistance between the consumable tray and the tray when the consumable tray rotates, and ensure that the consumable tray can rotate and tighten the discharged consumables on the consumable tray under the action of the power storage mechanism. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is an exploded view of the reset mechanism in Example 1.
[0023] Figure 2 It is a schematic diagram of the usage status of Example 1.
[0024] Figure 3 yes Figure 2 Bottom view of .
[0025] Figure 4 It is a cross-sectional view of the tray support in Example 1. DETAILED DESCRIPTION
[0026] 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.
[0027] Example 1
[0028] like Figure 1-3As shown, this embodiment provides a passive resetting mechanism for consumables used in 3D printing. The consumables are wound on the consumable tray 5. The passive resetting mechanism includes a tray 1, a tray support 2 and a force storage mechanism 3. The tray 1 is provided with a connecting shaft 11. The force storage mechanism 3 and the tray support 2 are sequentially sleeved on the connecting shaft 11. The force storage mechanism 2 is arranged in the tray support 2, and the consumable tray is placed on the tray 1. The force storage mechanism 3 is configured to drive the tray support 2 to rotate in the opposite feeding direction when the consumable tray 5 finishes feeding. The tray 1 is provided with a guide hole 12. The guide hole 12 is provided with a guide assembly 4, which is used for the consumable tray to rotate on the tray 1. At the same time, the guide assembly 4 can also ensure that the resistance of the consumable tray is small enough when rotating. The guide assembly 4 includes a universal bearing or a self-lubricating guide wheel or a rolling bearing. The middle part of the connecting shaft 11 is provided with a first placement groove 111.
[0029] Preferably, the material tray support 2 matches the shape of the shaft portion of the consumable tray 5 , and the material tray support 2 can be placed in the shaft portion of the consumable tray 5 and detachably connected thereto.
[0030] Preferably, the tray 1 can be directly fixed on the 3D printer to reset the consumables when returning the materials.
[0031] The power storage mechanism 3 includes a bottom cover 31, an outer rotating shaft 32, an inner rotating shaft 33, a clockwork mechanism 34 and a clockwork cover 35; the bottom cover is connected to the tray bracket 2 by fasteners, and a first elastic member 36 is provided in the bottom cover 31, and the first elastic member is configured to provide friction for the outer rotating shaft. Specifically, a second placement groove 311 is provided in the bottom cover 31, and the first elastic member 36 is placed in the second placement groove 311 and fixed thereto; the outer rotating shaft 32 is sleeved on the connecting shaft 11; the first elastic member 36 is fixed on the bottom cover 31, so that the first elastic member 36 will rotate coaxially with respect to the connecting shaft of the tray 1, and the first elastic member 36 will rotate coaxially with respect to the connecting shaft of the tray 1. The first elastic member 36 provides a relatively certain friction force to drive the outer shaft 32 to rotate. The first elastic member 36 can be a spring. The inner shaft 33 is arranged in the first placement groove 111 and fixed thereto. The fixing method can be directly fixed by a fastener or fixed by a buckle. Specifically, the side of the connecting shaft 11 can be provided with a buckle 112, and the inner shaft 33 is provided with a buckle 331. The buckle 331 is configured in the buckle 112. The number of the buckle 112 and the buckle 331 is the same, and there are at least two buckles 112 or buckles 331, ensuring that the inner shaft 33 can be fixed in the first placement groove 111. The clockwork cover 35 is connected to the tray bracket 2. Preferably, the clockwork cover 35 and the tray bracket 2 can be connected by other connection methods such as buckle connection or threaded connection. One end of the clockwork mechanism 34 is connected to the inner shaft 33, and the other end is connected to the outer shaft 32. The clockwork mechanism 34 can be a clockwork or a torsion spring. The outer shaft 32 is configured to stop rotating when the friction force provided by the first elastic member 36 is less than the elastic force provided by the clockwork mechanism 34. Since one end of the clockwork mechanism 34 is connected to the inner shaft 33 and the other end is connected to the outer shaft 32, the outer shaft rotates when the consumables are fed, and the inner shaft 33 does not move. The clockwork mechanism 34 is tightened until the elastic force generated by the tightening of the clockwork mechanism 34 is greater than the friction force provided by the first elastic member 36, and the outer shaft 32 is no longer driven to rotate by the first elastic member 36; the consumable tray, the tray bracket, the bottom cover, and the first elastic member 36 are pulled to continue rotating as the consumables continue to be fed. During the feeding process, the elastic force provided to the outer shaft 32 by the clockwork mechanism 34 It is equal to the dynamic friction force provided to the outer shaft 32 by the first elastic member 36; when the material is withdrawn, the pulling force of the feeding motor is lost, the elastic force of the clockwork mechanism 34 is released, and the outer shaft 32 is driven to rotate; because there is friction between the first elastic member 36, the first elastic member 36 is driven to rotate, and because the first elastic member 36 is fixed on the bottom cover 31, the bottom cover 31 is fixed on the material tray bracket 2, and the consumable tray 5 is installed on the material tray bracket 2, therefore, under the action of the clockwork mechanism 34, the consumable tray 5 is driven to rotate in the reverse feeding direction to tighten the consumables.
[0032] like Figure 4As shown, the material tray bracket 2 may also be provided with a fin 21 and a second elastic member 22, and the fin 21 and the second elastic member 22 are connected. The fin 21 is configured to expand and contract under the action of the second elastic member 22 to adapt to consumable trays 5 of different specifications and meet the connection with consumable trays 5 of different sizes.
[0033] The working principle is as follows: the consumable tray 5 is detachably connected to the tray bracket 2. When the consumable tray 5 rotates under the action of the feeding motor, the tray bracket 2 is driven to rotate. Since the tray bracket 2 and the bottom cover 31 are fixed, the spring (first elastic member 36) is fixed on the bottom cover 31, so the spring (first elastic member 36) will also rotate coaxially with respect to the connecting shaft 11 of the tray 1. The spring (first elastic member 36) will provide a relatively certain friction force to drive the outer shaft 32 to rotate. A spring (spring mechanism 34) is fixed on the outer shaft 32. The other end of the spring (spring mechanism 34) is fixed on the inner shaft 33. Because the buckle 331 of the inner shaft 33 is set in the slot 112 during operation, the outer shaft 32 rotates when the consumables are fed, and the inner shaft 33 does not move. The spring (spring mechanism 34) is tightened until the elastic force generated by the spring (spring mechanism 34) due to tightening is greater than the friction force provided by the spring sheet (first elastic member 36). Because one end of the spring (spring mechanism 34) is fixed on the inner shaft 33, the inner shaft 33 is fixed on the tray 1, and the other end is fixed on the outer shaft 32, the outer shaft 32 The rotation of the outer shaft 32 is driven by the friction force provided by the spring (first elastic member 36), and the outer shaft 32 is no longer driven to rotate by the spring (first elastic member 36). The consumable tray 5, the tray bracket 2, the bottom cover 31 and the spring (first elastic member 36) are pulled to continue to rotate as the consumables continue to be fed. During the continuous feeding process, the elastic force provided by the spring (spring mechanism 34) to the outer shaft 32 is equal to the dynamic friction force provided by the spring (first elastic member 36) to the outer shaft 32; when the material is withdrawn, the pulling force of the feeding motor is lost, and the spring (spring mechanism 34) is elastic. The force is released, driving the outer shaft 32 to rotate. The outer shaft 32 has a friction force with the spring sheet (first elastic member 36), driving the spring sheet (first elastic member 36) to rotate. Since the spring sheet (first elastic member 36) is fixed on the bottom cover 31, and the bottom cover 31 is fixed on the material tray bracket 2, and the material tray bracket 2 is connected to the consumable tray 5, the elastic force of the spring (spring mechanism 34) is released when the material is withdrawn, driving the consumable tray 5 to rotate in the opposite direction of the feeding direction, and the withdrawn consumables are rotated and tightened on the consumable tray 5, thereby fundamentally avoiding the problem of loose consumables causing knots.
[0034] Example 2
[0035] The present embodiment provides a passive reset mechanism for consumables used in 3D printing. The consumables are wound on a consumable tray 5. The passive reset mechanism includes a tray 1, a tray support 2, and a force storage mechanism 3. The tray 1 is provided with a connecting shaft 11. The force storage mechanism 3 and the tray support 2 are sequentially sleeved on the connecting shaft 11. The force storage mechanism 2 is arranged in the tray support 2, and the consumable tray is placed on the tray 1. The force storage mechanism 3 is configured to drive the tray support 2 to rotate in the opposite feeding direction when the consumable tray 5 finishes feeding. The tray 1 is provided with a guide hole 12, and a guide assembly 4 is arranged in the guide hole 12, which is used for the consumable tray to rotate on the tray 1. At the same time, the guide assembly 4 can also ensure that the resistance of the consumable tray is small enough when rotating. The guide assembly 4 includes a universal bearing, a self-lubricating guide wheel or a rolling bearing. Preferably, the tray support 2 matches the shape of the shaft of the consumable tray 5, and the tray support 2 can be placed in the shaft of the consumable tray 5 and detachably connected thereto.
[0036] Preferably, the tray 1 can be directly fixed on the 3D printer to reset the consumables when returning the materials.
[0037] The power storage mechanism 3 includes a spring mechanism 34 and a spring cover 35; the spring cover 35 is connected to the tray support 2. Preferably, the spring cover 35 and the tray support 2 can be connected by other connection methods such as snap connection or threaded connection. The spring mechanism 34 is arranged on the spring cover 35, and the spring mechanism 34 includes a motor, and the driving shaft of the motor is connected to the connecting shaft. When the feeding is completed, the motor is used to directly drive the tray to drive the consumable tray to rotate and tighten the consumables on the consumable tray.
[0038] The working principle is as follows: when feeding, the motor (clockwork mechanism 34) is not energized, and the consumable tray 5 and the tray bracket 2 are dragged and rotated by the feeding motor (clockwork mechanism 34); when withdrawing, the motor (clockwork mechanism 34) drives the connecting shaft 11 to move in the opposite direction, pulls back the tray, tightens the consumables already in the feeding channel, and resets the consumables on the consumable tray 5, thereby fundamentally avoiding the problem of consumables becoming loose and causing knots when withdrawn.
[0039] Example 3
[0040] This embodiment provides a 3D printer, and the 3D printer includes the consumable passive resetting mechanism in Embodiment 1 or Embodiment 2.
[0041] 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.
[0042] 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 passive resetting mechanism for consumables used in 3D printing, characterized in that: It includes a tray, a tray bracket and a force storage mechanism. The tray is provided with a connecting shaft. The force storage mechanism and the tray bracket are sequentially sleeved on the connecting shaft. The force storage mechanism is arranged in the tray bracket. The force storage mechanism is configured to drive the tray bracket to rotate in the opposite feeding direction when the feeding of the consumable tray is completed.
2. A passive resetting mechanism for consumables for 3D printing according to claim 1, characterized in that: A first placement groove is provided in the middle portion of the connecting shaft.
3. A passive resetting mechanism for consumables for 3D printing according to claim 1, characterized in that: The force storage mechanism comprises a bottom cover, and the bottom cover is fixedly connected to the material tray support.
4. A passive resetting mechanism for consumables for 3D printing according to claim 3, characterized in that: The power storage mechanism also includes an outer rotating shaft, and the outer rotating shaft is sleeved on the connecting shaft.
5. A passive resetting mechanism for consumables used in 3D printing according to claim 4, 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.
6. A passive resetting mechanism for consumables used in 3D printing according to claim 1, 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.
7. A passive resetting mechanism for consumables for 3D printing according to claim 2, characterized in that: The power storage mechanism also includes an inner rotating shaft, which is arranged in the first placement groove and fixed thereto.
8. The passive resetting mechanism for consumables used in 3D printing according to claim 5, characterized in that: The power storage mechanism also includes a spring mechanism and a spring cover, and the spring cover is connected to the material tray bracket.
9. A passive resetting mechanism for consumables used in 3D printing according to claim 8, characterized in that: The clockwork mechanism is arranged on the clockwork cover, and the clockwork mechanism comprises a motor, and a driving shaft of the motor is connected to the connecting shaft.
10. The passive resetting mechanism for consumables used in 3D printing according to claim 8, characterized in that: One end of the clockwork mechanism is connected to the inner rotating shaft, and the other end is connected to the outer rotating shaft; the clockwork mechanism includes a clockwork spring or a torsion spring.
11. A passive resetting mechanism for consumables used in 3D printing according to claim 10, characterized in that: The outer rotating shaft is configured to stop rotating when the friction force provided by the first elastic member is smaller than the elastic force received by the clockwork mechanism.
12. The passive resetting mechanism for consumables used in 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.
13. A 3D printer, characterized in that: The 3D printer is provided with the consumable passive resetting mechanism described in any one of claims 1-11.