One-way material passing device and additive manufacturing apparatus

Abstract

The utility model discloses a one -way material passing device and laminated manufacturing equipment mainly through the action piece moves to the limiting position, and then extrudes consumable and carries out the limiting of consumable, avoids the reason of the mistake of consumable or vibration and so on to the nozzle outside and draws apart. The utility model mainly technical scheme: a one -way material passing device, include: support body, at least one action piece, action piece and support body swing joint, and action piece is used for abutting material, and material passes through the passage between support body and action piece, the position of action piece includes limiting position and loosening position, action piece is used for following material positive direction moves to loosening position to loosen material, if material stops moving, action piece is used for moving to limiting position under the action of external force, or action piece is used for following material reverse direction moves to limiting position to extrude material. The utility model is mainly used for preventing material reverse direction movement.

Description

[0001] This application claims priority to Chinese Patent Application No. 202421874601.0, filed on August 2, 2024, entitled "A Unidirectional Feeding Device and Lamination Manufacturing Equipment", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This utility model relates to the field of 3D printing technology, and in particular to a unidirectional material feeding device and a layering manufacturing equipment. Background Technology

[0003] In an FDM printer, the filament passes through the extruder and is introduced into the printhead. During printing, the extruder pushes the filament into the printhead, where it is heated and melted before being ejected from the printhead onto the printing platform.

[0004] In situations requiring adjustment of the spraying position or replacement of consumables in multi-color printing, the extruder is stopped, thereby interrupting the feeding of the consumables and halting further extrusion. In existing technology, the consumables are drawn directly from the feed tray and pass directly through the extruder. When feeding is interrupted, the consumables are suspended between the feed tray and the extruder. Due to accidental contact with the consumables or extruder vibrations, the consumables can easily move in the opposite direction of the feeding, subsequently being drawn out of the nozzle. This results in inaccurate control of the next feed amount, and the movement of consumables in the molten section can easily cause nozzle clogging. Utility Model Content

[0005] In view of this, in order to solve at least one of the above-mentioned technical problems, the present invention provides a unidirectional material feeding device and a lamination manufacturing equipment.

[0006] To achieve the above objectives, this utility model mainly provides the following technical solutions: On the one hand, this utility model provides a unidirectional material feeding device, including: Support structure; At least one actuating element is movably connected to the support body. The actuating element is used to abut against the material, and the material passes through the channel between the support body and the actuating element. The position of the actuating element includes a limiting position and a releasing position. The actuating element is used to follow the material in the forward direction to the releasing position to release the material. If the material stops moving, the actuating element is used to move to the limiting position under the action of an external force, or the actuating element is used to follow the material in the reverse direction to the limiting position to squeeze the material.

[0007] On the other hand, the present invention also provides a lamination manufacturing apparatus, including any of the above-mentioned unidirectional feeding devices.

[0008] This utility model proposes a unidirectional feeding device and a lamination manufacturing equipment. The device primarily works by having an actuating element contact the material and follow its movement. During forward material feeding, the actuating element moves forward with the material to a release position, thus releasing the material's restriction and allowing it to continue forward feeding. When the material moves in the reverse direction, the actuating element moves with the material to a limit position, or after the material's forward movement stops, the actuating element moves to the limit position under external force, thereby squeezing the material and preventing it from continuing to move in the reverse direction. This locks the material during reverse movement, preventing accidental contact or vibration that could cause it to be pulled out of the nozzle, thus avoiding impacts on feeding accuracy and printing quality, and preventing nozzle clogging caused by the movement of molten material inside the nozzle. Furthermore, the actuating element switches between the release and limit positions as it moves with the material, eliminating the need for additional sensors and drive devices for active control of the actuating element. The structure is simple and easy to implement. Attached Figure Description

[0009] Figure 1 A schematic diagram of a unidirectional material feeding device provided in an embodiment of this utility model from a first-view perspective; Figure 2 A schematic diagram of a unidirectional material feeding device provided in an embodiment of this utility model from a second perspective; Figure 3 An exploded structural diagram of a unidirectional material feeding device provided in an embodiment of this utility model; Figure 4 for Figure 2 A schematic cross-sectional view of the unidirectional feeding device at position AA. Figure 5 for Figure 2 A schematic cross-sectional view of the unidirectional feeding device at position BB; Figure 6 This is a cross-sectional structural diagram of a support provided in an embodiment of the present utility model. Detailed Implementation

[0010] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the following detailed description of the specific implementation, structure, features and effects of the unidirectional material feeding device proposed according to this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0011] On the one hand, such as Figure 1-6 As shown, this utility model embodiment provides a unidirectional material feeding device, including: Support body 100; At least one actuating member 200 is movably connected to the support 100. The actuating member 200 is used to abut against the material 300, which passes through the channel between the support 100 and the actuating member 200. The position of the actuating member 200 includes a limiting position and a releasing position. The actuating member 200 is used to follow the material 300 in the forward direction to the releasing position to release the material 300. If the material 300 stops moving, the actuating member 200 is used to move to the limiting position under the action of external force, or the actuating member 200 is used to follow the material 300 in the reverse direction to the limiting position to squeeze the material 300.

[0012] A one-way feeding device can be applied to additive manufacturing equipment. Material 300 is the filament used for 3D printing. The one-way feeding device prevents the filament from being ejected, thus avoiding inaccurate feeding and molten filament clogging the print head caused by the filament being pulled out of the print head. Alternatively, the one-way feeding device can also be used in feeding other filamentary or strip-shaped materials 300. Alternatively, material 300 can also be a conveyor belt, preventing inaccurate positioning of the conveyor belt caused by reverse movement. In the following embodiments, material 300 is used as an example. The one-way feeding device can be set at any position on the path of material 300 from the material tray to the print head, such as between the material tray and the extruder, or between the extruder and the print head.

[0013] The support body 100 is the main structure of the unidirectional feeding device. It can be fixed to the multilayer manufacturing equipment, such as the frame or print head, or it can be fixed separately to the operating table. The unidirectional feeding device can pass through one material 300, or it can be used to pass through multiple materials 300. The actuating element 200 can be single or multiple. Each material 300 can correspond to one actuating element 200. The consumable passes between the actuating element 200 and the support body 100. When the actuating element 200 is in the limiting position, the actuating element 200 and the support body 100 cooperate to squeeze the consumable, thereby limiting the consumable. Subsequently, multiple actuating elements 200 can respectively constrain the movement direction of multiple consumables. For example, taking the unidirectional feeding device to constrain the movement direction of four consumables as an example, the number of actuating elements 200 is four, and each actuating element 200 is connected to the support body 100 with one consumable. Alternatively, in some other implementations, each material 300 may correspond to multiple action members 200. For example, the consumable passes between two action members 200, and the two action members 200 move synchronously under the action of the consumable. When the two action members 200 move to the limit position at the same time, the consumable is squeezed by both sides of the consumable, thereby achieving the limit of the consumable.

[0014] The actuating element 200 comes into contact with the consumable. If the consumable changes from forward movement to a standstill, or from forward movement to reverse movement, the actuating element 200 will follow the consumable under the frictional force of the consumable, thereby changing its position. The direction in which the consumable moves towards the printhead is called the forward movement of the consumable, and the direction in which the consumable moves away from the printhead is called the reverse movement of the consumable. The forward and reverse movements of the consumable will cause the actuating element 200 to move in opposite directions, thereby changing the position of the actuating element 200.

[0015] Alternatively, in some other embodiments, by applying an external force to the actuator 200, the change in the position of the actuator 200 relies on the synergistic action of the consumable and the external force. For example, when the consumable stops moving forward, since the actuator 200 is not pressing against the consumable, there will be room for movement between the actuator 200 and the consumable. The actuator 200 will move independently of the consumable under the action of the external force, rather than relying on the consumable, in the direction of pressing against the consumable, such as moving in the opposite direction of the consumable's movement, and then move to the limit position, thus pressing against the consumable. This achieves locking of the consumable without relying on the reverse movement of the consumable. There are various ways to apply an external force to the actuator 200. For example, an elastic element can be directly or indirectly connected to the actuator 200, thereby directly or indirectly providing the actuator 200 with an external force that causes the actuator 200 to move and press against the consumable.

[0016] It is worth noting that the movement of the actuating element 200 between the limiting position and the releasing position can be changed by the movement of the consumable or by the combined action of the consumable movement and external force. For example, the actuating element 200 can be rotatably connected to the support body 100. The actuating element 200 has a pressing head. The movement of the consumable drives the actuating element 200 to rotate in the forward direction, and the pressing head will rotate to press the consumable, thereby limiting the consumable. Alternatively, the movement of the consumable drives the actuating element 200 to rotate in the reverse direction, and the pressing head will rotate away from the consumable, thereby releasing the consumable. Or, in some embodiments, the actuating element 200 can move relative to the support body 100 at least in the direction of consumable movement. The actuating element 200 relies on the shape of the support body 100 and the combined action of the consumable movement to achieve movement between the limiting position and the releasing position. This embodiment will be further described in the embodiments below.

[0017] This utility model discloses a unidirectional feeding device and a lamination manufacturing equipment. The device primarily works by having an actuating element contact the material and follow its movement. During forward material feeding, the actuating element moves with the material to a release position, releasing the material's restriction and allowing it to continue forward feeding. When the material moves in the reverse direction, the actuating element moves with the material to a limit position, or moves to a limit position under external force, thus squeezing the material and preventing it from continuing to move in the reverse direction. This locks the material during reverse movement, preventing accidental contact or vibration that could cause it to be pulled out of the nozzle, thus avoiding impacts on feeding accuracy and printing quality, and preventing nozzle clogging caused by molten material moving within the nozzle. Furthermore, the actuating element switches between the release and limit positions as it moves with the material, eliminating the need for additional sensors and drive devices for active control. The structure is simple and easy to implement.

[0018] In one embodiment, the size of the channel corresponding to the limiting position is smaller than the size of the channel corresponding to the releasing position. The channel size refers to the distance between the point of action of the actuating member for compressing the consumable and the support body in the radial direction of the consumable. Reducing the channel size will achieve compression of the consumable. For example, the size of the channel corresponding to the limiting position can be smaller than the outer diameter of the consumable, thereby achieving compression of the consumable; the size of the channel corresponding to the releasing position can be greater than or equal to the outer diameter of the consumable, thereby allowing the consumable to pass between the support body and the actuating member.

[0019] In one embodiment, the support body 100 has at least one material passage hole 101 for receiving material 300. The material passage hole 101 includes an action area 1012. The opening area of ​​the action area 1012 decreases in the reverse movement direction of the material 300. The action member 200 is located within the action area 1012.

[0020] The number of feed holes 101 is consistent with the number of consumables that need to be threaded through. For example, in the aforementioned embodiment of the unidirectional feed device used to constrain the movement direction of four consumables, there are four feed holes 101, each of which passes through one consumable. The action area 1012 is a section of the feed hole 101. The reduction of the opening area of ​​the action area 1012 can be achieved by tilting one or more side walls, or by uniformly shrinking the side walls of the action area 1012 circumferentially. A single action element 200 or multiple action elements 200 can be provided inside the feed hole 101. When the consumable moves forward, the action element 200 is driven by the consumable to move towards the side with a larger opening area of ​​the action area 1012, thereby making way for the consumable and enabling the consumable to move forward. When the consumable moves in the reverse direction, the actuating element 200 is driven by the consumable to move to the side with a smaller opening area in the action area 1012. Alternatively, when the consumable stops moving in the forward direction, the actuating element 200 is subjected to an external force and moves to the side with a smaller opening area in the action area 1012. Subsequently, the actuating element 200 will squeeze the consumable to limit the consumable from continuing to move in the reverse direction.

[0021] In one implementation, such as Figure 6 As shown, the inner wall of the action area 1012 includes an action wall 102 and an adjustment wall 103 disposed opposite to each other. The action member 200 abuts against the adjustment wall 103, and a channel is formed between the action member 200 and the action wall 102 for the material 300 to pass through. The distance between the adjustment wall 103 and the action wall 102 decreases in the direction of reverse movement of the material 300. The action member 200 is used to follow the material 300 in the reverse direction along the adjustment wall 103 to the limit position, or the action member 200 is used to follow the adjustment wall 103 in the reverse direction to the limit position under the action of external force, so as to cooperate with the action wall 102 to squeeze the material 300. The action member 200 is also used to follow the material 300 in the forward direction along the adjustment wall 103 to the release position to release the material 300.

[0022] The actuating wall 102 is a sidewall extending in the direction of consumable movement, while the adjusting wall 103 is an inclined sidewall. In the direction of consumable movement in the opposite direction, the adjusting wall 103 is inclined closer to the actuating wall 102. When the consumable moves forward, the actuating member 200 is driven by the consumable to move further away from the actuating wall 102 on the adjusting wall 103, thereby making way for the consumable and allowing it to move forward. When the consumable moves in the opposite direction, the actuating member 200 is driven by the consumable to move closer to the actuating wall 102 on the adjusting wall 103. Alternatively, when the consumable stops moving forward, the actuating member 200 is subjected to an external force and moves closer to the actuating wall 102 on the adjusting wall 103. The actuating member 200 then compresses the consumable to limit its continued reverse movement. The actuating wall 102 serves to cooperate with the adjusting wall 103 in compressing the consumable and to guide the consumable during transport.

[0023] In some embodiments, a single actuating element 200 is provided within the operating area 1012, such as in the embodiment described above that includes an operating wall 102 and an adjusting wall 103, where the single actuating element 200 abuts against the adjusting wall 103. Alternatively, in other embodiments, multiple actuating elements 200 are provided within the operating area 1012, such as in an embodiment where the operating area 1012 is uniformly inwardly circumferentially concave. The multiple actuating elements 200 can be evenly distributed circumferentially within the operating area 1012, with the material 300 located between the multiple actuating elements 200. Subsequently, following the movement of the consumable, the multiple actuating elements 200 simultaneously open outward to release the consumable. The actuating elements 200 move in the opposite direction with the consumable, or are subjected to external force and converge inward to compress the consumable, thereby limiting the consumable.

[0024] The shape of the actuating wall 102 can be adapted to the contour of the consumable, such as being arc-shaped. The shape of the adjusting wall 103 can be adapted to the actuating member 200, allowing the actuating member 200 to move relative to the adjusting wall 103, such as the adjusting wall 103 being planar. The relative movement of the actuating member 200 with the sidewall of the actuating area 1012, or in other words, with the adjusting wall 103, can take various forms. For example, in one embodiment, the actuating member 200 slides against the sidewall of the actuating area 1012. Alternatively, in some embodiments, the actuating member 200 rolls against the sidewall of the actuating area 1012, such as when the actuating member 200 is spherical, or when the actuating member 200 is cylindrical. Rolling, compared to sliding, makes it easier for the actuating member 200 to move relative to the support 100, resulting in higher sensitivity and reducing the burden on the consumable to move the actuating member 200. Meanwhile, when the actuating element 200 moves to the released position, the actuating element 200 rolls during the forward conveying of the consumable to avoid friction between the actuating element 200 and the consumable, which would affect the smoothness of the consumable conveying.

[0025] In one implementation, such as Figure 6 As shown, the material passage 101 also includes a through-hole area 1011, which is located on the side of the function area 1012 in the reverse movement direction of the material 300. The opening area of ​​the through-hole area 1011 is smaller than the opening area of ​​the function area 1012, and a boss 105 is formed between the through-hole area 1011 and the function area 1012.

[0026] The shape of the through-hole area 1011 can be adapted to the consumable material. For example, the inner diameter of the through-hole area 1011 can be slightly larger than the outer diameter of the consumable material, such as by 0.05 mm to 0.1 mm, thereby stabilizing the consumable material. When the unidirectional feeding device is located between the extruder and the print head, the through-hole area 1011 can connect to the feed tube. When the actuating member 200 is in the limit position, the actuating member 200 abuts against the boss 105, or, when the actuating member 200 is in the limit position, the distance between the actuating member 200 and the boss 105 is less than a set distance, such as less than 1 mm, which can reduce the processing accuracy requirements. The boss 105 is used to prevent the actuating member 200 from excessively squeezing the consumable material. When the force of the consumable material moving in the opposite direction is too large, the actuating member 200 will continue to move in the opposite direction with the consumable material. By abutting against the boss 105, the actuating member 200 can stop the continued movement of the consumable material and the actuating member 200, avoiding damage to the consumable material due to excessive squeezing.

[0027] In one embodiment, the unidirectional feeding device further includes an elastic element 400, which is directly or indirectly connected to the actuating element 200. The connection can be abutment. The elastic element 400 is used to provide the actuating element 200 with a spring force to move towards the limiting position.

[0028] The elastic element 400 serves two purposes: firstly, it ensures that when the consumable moves in the reverse direction, the actuating element 200 can closely follow the consumable to the limit position, achieving a limit and preventing it from failing to follow the consumable due to insufficient friction; secondly, it allows the actuating element 200 to remain stable in the limit position when the consumable is not moving forward, maintaining control over the consumable's position. When the consumable moves forward, the pushing force of the consumable on the actuating element 200 overcomes the elastic force of the elastic element 400, causing the actuating element 200 to move in the direction of the consumable's forward movement. During the movement of the actuating element 200, the degree of compression between it and the consumable decreases, and the friction decreases. When the friction between the consumable and the actuating element 200 is balanced with the elastic force of the elastic element 400, the actuating element 200 stabilizes in the released position, and the consumable can continue to move forward. The elastic element 400 can be of various types, such as soft rubber, foam, or a spring.

[0029] Each actuating element 200 may be provided with a separate elastic element 400. Alternatively, in one embodiment, the unidirectional feeding device may further include a pressing element 500, with the actuating element 200 connected to the pressing element 500 and the elastic element 400 connected to the pressing element 500.

[0030] The pressing member 500 is a single entity, and all four actuating members 200, as described in the previous embodiment, abut against the same pressing member 500. The elastic member 400 is also a single entity. The pressing member 500 simultaneously provides a force to move multiple actuating members 200 towards the limiting position. It is worth noting that when a single actuating member 200 moves, the pressing member 500 will only experience a slight positional fluctuation on one side corresponding to the moving actuating member 200. The distance that the actuating member 200 moves between the limiting position and the releasing position is approximately 0.1 mm, and the fluctuation distance of the pressing member 500 is also approximately 0.1 mm. This does not affect the limiting effect on other actuating members 200 that are not moving.

[0031] In a more specific embodiment, there are multiple actuating elements 200, which are symmetrically distributed relative to the elastic element 400. For example, if there are four actuating elements 200, they are evenly distributed around the central axis of the elastic element 400, meaning the elastic element 400 applies force at the center point of the area enclosed by the four actuating elements 200. When the first actuating element 200 moves to the released position, the pressing element 500 only experiences a slight movement on one side corresponding to the first actuating element 200, while the positions of the other three actuating elements 200 do not move significantly. Furthermore, because the elastic element 400 applies force at the middle position of the multiple actuating elements 200, one side of the pressing element 500 corresponding to the other actuating element 200, which is symmetrically arranged with respect to the first actuating element 200, will experience a slight movement towards the actuating element, thereby making the other actuating element 200, which is symmetrically arranged with respect to the first actuating element 200, more stable in the limiting position.

[0032] In an embodiment where at least one material passage hole 101 is provided on the aforementioned support 100, and the material passage hole 101 includes an action area 1012, and the action member 200 is located within the action area 1012, in order to realize the interaction between the pressing member 500 and the action member 200, in one embodiment, the pressing member 500 includes a connecting plate 510 and at least one action claw 520. The action claw 520 is connected to the connecting plate 510 and extends into the material passage hole 101 or the action area 1012 to connect with the action member 200. The elastic member 400 is connected to the connecting plate 510.

[0033] The number of actuating claws 520 is the same as that of actuating member 200, such as four. The shape of the actuating claws 520 can be adapted to the actuating member 200. For example, if the actuating member 200 is cylindrical, the actuating claws 520 can be plate-shaped structures, thereby applying force evenly to the actuating member 200 along its axial direction and preventing the actuating member 200 from tilting during movement. The connecting plate 510 is a disc or a polygonal disc-shaped structure.

[0034] In one embodiment, the support 100 has a receiving space 104, in which at least a portion of the structure of the pressing member 500 and the elastic member 400 are located.

[0035] In an embodiment where at least one feed hole 101 is provided on the support body 100, the receiving space 104 communicates with the feed hole 101, and the connecting plate 510 of the pressing member 500 is located in the receiving space 104. This arrangement of the pressing member 500 and the elastic member 400 inside the support body 100 protects the pressing member 500, the elastic member 400, and the feed hole 101 from contamination by debris, thus preventing them from affecting movement and performance. Furthermore, it results in a simple and aesthetically pleasing overall appearance for the unidirectional feed device.

[0036] In one embodiment, the unidirectional feeding device further includes a disassembly component 600, which is detachably connected to the support body 100. The disassembly component 600 restricts the elastic member 400 and the pressing member 500 between the disassembly component 600 and the actuating member 200.

[0037] The disassembly / assembly component 600 facilitates the installation of the elastic element 400 and the pressing element 500. In use, the disassembly / assembly component 600 is removed from the support body 100, the pressing element 500 and the elastic element 400 are installed in place, and then the disassembly / assembly component 600 is installed back onto the support body 100 to limit the movement of the pressing element 500 and the elastic element 400. This facilitates the replacement of the pressing element 500 and the elastic element 400. Furthermore, after the pressing element 500 is disassembled, the actuating element 200 within the working area 1012 can be removed for cleaning, replacement, etc.

[0038] In one embodiment, the disassembly component 600 is interference-fitted with the support body 100; or, the disassembly component 600 can be a bolt, and the support body 100 has a screw hole, so that the disassembly component 600 is screwed to the support body 100.

[0039] In one embodiment, the support 100 includes a main body 110 and a limiting post 120, the limiting post 120 being connected to the main body 110, and the actuating member 200 being movably connected to the main body 110. At least one elastic member 400 is sleeved on the limiting post 120.

[0040] The limiting post 120 guides the deformation of the elastic element 400, ensuring a stable and uniform elastic force. In the embodiment including the pressing member 500 and the disassembly / assembly member 600, the connecting plate 510 of the pressing member 500 has an insertion port. The pressing member 500 is sleeved onto the limiting post 120 through the insertion port, and then the elastic element 400 is sleeved on the outer periphery of the limiting post 120. The disassembly / assembly member 600 is connected to the limiting post 120. When the disassembly / assembly member 600 is a bolt, the outer edge of the nut of the disassembly / assembly member 600 extends beyond the outer periphery of the limiting post 120, and the elastic element 400 abuts against the portion of the disassembly / assembly member 600 that extends beyond the limiting post 120. Subsequently, the disassembly / assembly member 600 restricts the position of the pressing member 500 and the elastic element 400.

[0041] On the other hand, this utility model also provides a lamination manufacturing apparatus, including any of the aforementioned unidirectional feeding devices. The advantages of including any of the aforementioned unidirectional feeding devices will not be elaborated here.

[0042] In some embodiments, the additive manufacturing apparatus further includes an extruder, a consumable hopper, and a printer body, the printer body including a printhead. The consumable material drawn from the consumable hopper first passes through a one-way feeding device, then through the extruder, and then into the printhead. Alternatively, the consumable material drawn from the consumable hopper passes through the extruder, then through a one-way feeding device, and then into the printhead. In multi-color printing additive manufacturing apparatus, the consumable hopper contains trays of multiple colors. Each color of consumable material, after being drawn from the consumable hopper, can pass through the same one-way feeding device, thus simultaneously restricting the movement direction of multiple consumable materials.

[0043] This application also provides the following implementation methods: Reference numeral 1. A unidirectional material feeding device, comprising: Support body 100; At least one actuating member 200 is movably connected to the support 100. The actuating member 200 is used to abut against the material 300, which passes through the channel between the support 100 and the actuating member 200. The position of the actuating member 200 includes a limiting position and a releasing position. The actuating member 200 is used to follow the material 300 in the forward direction to the releasing position to release the material 300. If the material 300 stops moving, the actuating member 200 is used to move to the limiting position under the action of external force, or the actuating member 200 is used to follow the material 300 in the reverse direction to the limiting position to squeeze the material 300.

[0044] Label 2, according to the unidirectional feeding device of label 1, wherein, The size of the channel corresponding to the limit position is smaller than the size of the channel corresponding to the release position.

[0045] Reference numeral 3, according to the unidirectional feeding device of reference numeral 1, wherein the support body 100 is provided with at least one feeding hole 101, the feeding hole 101 is used to receive material 300, the feeding hole 101 includes an action area 1012, the opening area of ​​the action area 1012 decreases in the direction of reverse movement of material 300, and the action member 200 is located within the action area 1012.

[0046] Label 4, according to the unidirectional feeding device of label 3, wherein, The inner wall of the action area 1012 includes an action wall 102 and an adjustment wall 103 disposed opposite to each other. The action member 200 abuts against the adjustment wall 103, and a channel is formed between the action member 200 and the action wall 102 for the material 300 to pass through. The distance between the adjusting wall 103 and the actuating wall 102 decreases in the direction of the reverse movement of the material 300. The actuating member 200 is used to follow the material 300 in the reverse movement along the adjusting wall 103 to the limit position, so as to cooperate with the actuating wall 102 to squeeze the material 300. The actuating member 200 is also used to follow the material 300 in the forward movement along the adjusting wall 103 to the release position, so as to release the material 300.

[0047] Reference numeral 5, according to reference numeral 3, wherein multiple action elements 200 are provided in the action area 1012, and the unidirectional material conveying device is used to pass through multiple materials 300; Each material 300 corresponds to one or more functional components 200; The actuating element 200 slides against the side wall of the acting area 1012; Alternatively, the actuating element 200 is rolled to the sidewall of the actuating area 1012; Alternatively, the actuating element 200 is spherical, and the actuating element 200 is rolledly connected to the side wall of the actuating area 1012; Alternatively, the actuating element 200 is cylindrical, and the actuating element 200 is rolledly connected to the side wall of the actuating area 1012.

[0048] Label 6, according to the unidirectional feeding device of label 3, wherein, The material passage 101 also includes a through area 1011, which is located on one side of the material 300 in the opposite direction of movement in the action area 1012. The opening area of ​​the through area 1011 is smaller than the opening area of ​​the function area 1012, and a boss 105 is formed between the through area 1011 and the function area 1012. When the actuator 200 is in the limit position, the actuator 200 abuts against the boss 105, or the distance between the actuator 200 and the boss 105 is less than the set distance.

[0049] Reference numeral 7. The unidirectional feeding device according to reference numeral 1, wherein the unidirectional feeding device further includes: The elastic element 400 is directly or indirectly connected to the actuating element 200. The elastic element 400 applies a spring force to the actuating element 200, causing the actuating element 200 to move toward the limiting position.

[0050] Reference numeral 8. According to reference numeral 7, the one-way conveying device further includes: The pressing element 500 is connected to the actuating element 200, and the elastic element 400 is connected to the pressing element 500. The pressing member 500 includes a connecting plate 510 and at least one actuating claw 520. The actuating claw 520 is connected to the connecting plate 510 and to the actuating member 200. The elastic member 400 is connected to the connecting plate 510. The support 100 has a receiving space 104, in which at least a portion of the structure of the pressing member 500 and the elastic member 400 are located; the unidirectional feeding device also includes: Disassembly / assembly parts 600; The disassembly component 600 is detachably connected to the support body 100, and the disassembly component 600 restricts the elastic element 400 and the pressing element 500 between the disassembly component 600 and the actuating element 200; The assembly / disassembly component 600 is interference-fitted with the support body 100; or, the assembly / disassembly component 600 is screwed to the support body 100.

[0051] Reference numeral 9, a one-way feeding device according to reference numeral 7, wherein the one-way feeding device is applied to the lamination manufacturing equipment; material 300 is a consumable; The support 100 includes a main body 110 and a limiting post 120. The limiting post 120 is connected to the main body 110, and the actuating member 200 is movably connected to the main body 110. At least 400 elastic elements are fitted onto the limiting post 120.

[0052] Reference numeral 10. A layering manufacturing apparatus, comprising a unidirectional feeding device of any one of reference numerals 1-9 above.

[0053] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A unidirectional material feeding device, characterized in that, include: Support structure; At least one actuating member is movably connected to the support body, the actuating member is used to abut against material, and the material passes through a channel between the support body and the actuating member; The position of the actuating element includes a limiting position and a releasing position. The actuating element is used to follow the material in the forward direction to the releasing position to release the material. If the material stops moving, the actuating element is used to move to the limiting position under the action of an external force, or the actuating element is used to follow the material in the reverse direction to the limiting position to squeeze the material.

2. The unidirectional feeding device according to claim 1, characterized in that, The size of the channel corresponding to the limiting position is smaller than the size of the channel corresponding to the releasing position.

3. The unidirectional feeding device according to claim 1, characterized in that, The support body has at least one material passage hole for receiving the material. The material passage hole includes an active area, the opening area of ​​which decreases in the direction of the reverse movement of the material, and the active member is located within the active area.

4. The unidirectional feeding device according to claim 3, characterized in that, The inner wall of the working area includes a working wall and an adjusting wall arranged opposite to each other. The working member abuts against the adjusting wall, and the channel is formed between the working member and the working wall for the material to pass through. The distance between the adjusting wall and the actuating wall decreases in the direction of the reverse movement of the material. The actuating member is used to follow the material in the reverse direction along the adjusting wall to the limiting position to cooperate with the actuating wall to squeeze the material. The actuating member is also used to follow the material in the forward direction along the adjusting wall to the releasing position to release the material.

5. The unidirectional feeding device according to claim 3, characterized in that, The functional area is provided with multiple functional elements, and the unidirectional material conveying device is used to pass through multiple materials; Each of the aforementioned materials corresponds to one or more of the aforementioned functional elements; The actuating element slides against the sidewall of the actuating area; Alternatively, the actuating element is rolled to the sidewall of the actuating area; Alternatively, the actuating element is spherical, and the actuating element is rolledly connected to the sidewall of the actuating area; Alternatively, the actuating element is cylindrical and is rolledly connected to the sidewall of the actuating area.

6. The unidirectional feeding device according to claim 3, characterized in that, The material passage hole also includes a through-hole area, which is located on one side of the material in the opposite direction of movement in the functional area; The opening area of ​​the through-hole region is smaller than the opening area of ​​the functional region, and a boss is formed between the through-hole region and the functional region; When the actuating member is in the limiting position, the actuating member abuts against the boss, or the distance between the actuating member and the boss is less than a set distance.

7. The unidirectional feeding device according to claim 1, characterized in that, The unidirectional feeding device further includes: An elastic element is directly or indirectly connected to the actuating element, and the elastic element applies a spring force to the actuating element to move the actuating element toward the limiting position.

8. The unidirectional feeding device according to claim 7, characterized in that, The unidirectional feeding device further includes: A pressing member, wherein the actuating member is connected to the pressing member, and the elastic member is connected to the pressing member; The pressing member includes a connecting plate and at least one actuating claw, the actuating claw being connected to the connecting plate and the actuating element, and the elastic element being connected to the connecting plate; The support body has a receiving space, and at least a portion of the structure of the pressing member and the elastic member are located in the receiving space; the unidirectional feeding device further includes: Disassembly / assembly parts; The detachable component is detachably connected to the support body, and the detachable component restricts the elastic element and the pressing element between the detachable component and the actuating element; The assembly / disassembly component is interference-fitted to the support body; or, the assembly / disassembly component is screwed to the support body.

9. The unidirectional feeding device according to claim 7, characterized in that, The unidirectional feeding device is used in a lamination manufacturing equipment; the material is a consumable. The support body includes a main body and a limiting post, the limiting post being connected to the main body, and the actuating member being movably connected to the main body; At least the elastic element is sleeved on the limiting post.

10. A laminated manufacturing apparatus, characterized in that, The unidirectional feeding device includes any one of claims 1-9 above.

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