Consumable conveying device and three-dimensional forming equipment

Abstract

According to the consumable conveying device and the three-dimensional forming equipment, a discharging opening is mainly covered with a blocking piece at the positioning position, when the consumable is installed, the consumable abuts against the blocking piece and cannot continue to move forwards, feedback that the consumable is installed in place is achieved, and the situation that the consumable is not enough due to insufficient insertion of the consumable is avoided. And the problems of material leakage and blockage of a convergence channel caused by excessive consumable insertion are solved. According to the main technical scheme, the consumable conveying device is characterized in that a consumable channel is formed in a main body, the consumable channel comprises a discharging port, and the discharging port is used for allowing consumables to penetrate through in the preset direction; when the blocking piece is located at the positioning position, the ratio of the overlapping area of the blocking piece and the projection of the discharging port to the projection of the discharging port is larger than or equal to a first threshold value so as to block the consumable, and when the blocking piece is located at the receding position, the ratio of the overlapping area of the blocking piece and the projection of the discharging port to the projection of the discharging port is smaller than or equal to a second threshold value so that the consumable can move for receding. The consumable conveying device is mainly used for conveying consumables.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, and in particular to a consumable transfer device and a stereolithography equipment. Background Technology

[0002] In a multi-consumer FDM printer, the printhead includes multiple filament channels, a converging channel, and an extrusion mechanism. The filament channels are used to insert different consumables. During printing, depending on the consumable to be used, the extrusion mechanism moves the corresponding consumable from the filament channel to the converging channel. The consumable is then heated and melted, and subsequently sprayed onto the printing platform.

[0003] When installing consumables before printing, the consumables must be guided to the preset position in the consumable channel to ensure that the extrusion mechanism can accurately deliver the consumables to the converging channel and that the amount of consumables sprayed onto the printing platform is the preset amount. Currently, consumable installation usually relies on the operator's experience. Incorrect consumable installation will result in insufficient consumables being sprayed, affecting print quality; consumables that are too long can easily clog the entrance of the converging channel and cause excessive consumables to be sprayed out, affecting print results. Utility Model Content

[0004] In view of this, in order to solve at least one of the aforementioned technical problems, this utility model provides a consumables transfer device and a three-dimensional forming equipment.

[0005] To achieve the above objectives, this utility model mainly provides the following technical solutions:

[0006] On the one hand, this utility model provides a consumables transmission device, comprising:

[0007] The main body has at least one consumable channel, which includes a discharge port for passing consumables through in a preset direction.

[0008] The positioning component includes a stop, and the position of the stop includes a positioning position and a clearance position. When the stop is in the positioning position, in a preset direction, the ratio of the overlapping area of ​​the projection of the stop and the projection of the discharge port to the projection of the discharge port is greater than or equal to a first threshold, so as to block the consumable. When the stop is in the clearance position, in a preset direction, the ratio of the overlapping area of ​​the projection of the stop and the projection of the discharge port to the projection of the discharge port is less than or equal to a second threshold, so as to make way for the movement of the consumable. The first threshold is greater than the second threshold.

[0009] The positioning element is used to move under the action of external force so that the stop can move between the positioning position and the clearance position.

[0010] The stop can move between the positioning position and the clearance position in at least one of the following ways: linear movement, curved movement, rotation, and flipping. When the stop moves in a straight line, curved movement, or flipping, the stop is a plate-shaped structure. When the stop rotates, the stop is a disc-shaped structure.

[0011] And / or, the first threshold is greater than or equal to 0.2, and the second threshold is less than 0.2.

[0012] The positioning component also includes a connector. A movable guide is provided on the main body. The stop is connected to the connector. The connector is movably connected to the main body through the movable guide. The movable guide is used to guide the movement direction of the stop.

[0013] The movable guide includes a connecting hole, and the connecting member includes a through part and a locking head. The through part is connected to the stop, and the locking head is disposed in the through part. The through part passes through the connecting hole, and the locking head acts on the edge of the connecting hole to limit the position of the stop in the axial direction of the connecting hole.

[0014] The clip is elastic, or the first end of the through part is connected to the stop, the second end of the through part is used to spring under the action of external force, and the clip is set at the second end of the through part.

[0015] The stop is provided with at least one clearance opening. When the positioning member is in the clearance position, the clearance opening corresponds to the discharge port in a preset direction.

[0016] The clearance openings are notches set on the stop and there are multiple clearance openings of the same number. The clearance openings are arranged in a single direction or distributed around the rotation axis of the stop.

[0017] Alternatively, the clearance port can be a through hole provided on the stop. There are multiple discharge ports and clearance ports, and the number is the same. The clearance ports are arranged in a single direction, or distributed around the rotation axis of the stop.

[0018] The main body is provided with a first limiting part and a second limiting part. When the stopper moves to the positioning position, the first limiting part acts with the positioning member. When the positioning member moves to the yielding position, the second limiting part acts with the positioning member, thereby restricting the position of the stopper between the positioning position and the yielding position.

[0019] The positioning component also includes an extension component, which is connected to the stop component;

[0020] A limiting groove is provided on the main body, and at least a part of the structure of the extension is embedded in the limiting groove. The first limiting part and the second limiting part are different side walls of the limiting groove.

[0021] Alternatively, a limiting hole is provided on the main body, and the extension is inserted into the limiting hole, with the first limiting part and the second limiting part being different side walls of the limiting hole.

[0022] The stop component slides and abuts against the main body;

[0023] The main body has a mounting groove, and at least part of the structure of the stop is embedded in the mounting groove;

[0024] The surface of the main body opposite the stop and the groove of the mounting slot are on the same plane.

[0025] The positioning component also includes a force-applying handle, which is connected to a stop and is used to apply external force.

[0026] The main body is also provided with a force application guide. The force application handle interacts with the force application guide, and the force application guide is used to guide the movement direction of the force application handle.

[0027] The force-applying guide includes a guide hole or guide groove, and the force-applying handle passes through the guide hole or guide groove and is slidably connected to the inner wall of the guide hole or guide groove.

[0028] This also includes:

[0029] The elastic element is at least connected to the positioning element. When the stop moves from the yielding position to the positioning position, the elastic element stores energy, and when the stop moves from the positioning position to the yielding position, the elastic element releases energy.

[0030] The connection methods between the elastic element and the positioning element include at least one of the following: snap-fit, hook-fit, plug-fit, adhesive, and magnetic connection.

[0031] On the other hand, this invention also provides a stereolithography apparatus, including the consumable transfer device of any of the above.

[0032] This utility model proposes a consumable conveying device and a stereolithography equipment. When the stop is in the positioning position, it covers at least a portion of the outlet in a preset direction. During consumable installation, the stop prevents the consumable from moving further in the preset direction. The consumable resists the stop, preventing further forward movement under pressure, thus providing feedback that the consumable is properly installed. This avoids problems such as insufficient consumable insertion leading to insufficient ejection, or excessive insertion leading to leakage and blockage of the converging channel. During printing, the stop moves to a clearance position, opening the outlet. The consumable can then pass through the outlet and enter the converging channel under the action of the extrusion mechanism, achieving consumable conveying and printing. Attached Figure Description

[0033] Figure 1 A schematic diagram of the structure of a consumable transmission device provided in an embodiment of this utility model;

[0034] Figure 2 for Figure 1 A cross-sectional view of the consumables transfer device at position AA.

[0035] Figure 3This is a schematic diagram of a partial structure of a consumables transmission device provided in an embodiment of the present utility model;

[0036] Figure 4 An exploded view of a portion of the structure of a consumables transmission device provided in an embodiment of this utility model;

[0037] Figure 5 A schematic diagram of a positioning component provided in an embodiment of this utility model from a first-view perspective;

[0038] Figure 6 A schematic diagram of a positioning element provided in an embodiment of this utility model from a second perspective;

[0039] Figure 7 A schematic diagram of a positioning component from a third-person perspective, provided for an embodiment of this utility model;

[0040] Figure 8 A schematic diagram of a positioning element from a fourth perspective, provided in an embodiment of this utility model;

[0041] Figure 9 This is a schematic diagram of the structure of a lower guide provided in an embodiment of the present utility model. Detailed Implementation

[0042] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the following detailed description, in conjunction with the accompanying drawings and preferred embodiments, provides a detailed explanation of the specific implementation methods, structure, features, and effects of the consumable transmission device proposed according to this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0043] On the one hand, such as Figure 1-4 As shown, this embodiment of the utility model provides a consumables transmission device, including:

[0044] The main body 100 has at least one consumable channel, which includes a discharge port 101 for passing consumables through in a preset direction.

[0045] The positioning component 200 includes a stop 210. The position of the stop 210 includes a positioning position and a clearance position. When the stop 210 is in the positioning position, in a preset direction, the ratio of the overlapping area of ​​the projection of the stop 210 and the projection of the discharge port 101 to the projection of the discharge port 101 is greater than or equal to a first threshold, so as to block the consumable. When the stop 210 is in the clearance position, in a preset direction, the ratio of the overlapping area of ​​the projection of the stop 210 and the projection of the discharge port 101 to the projection of the discharge port 101 is less than or equal to a second threshold, so as to make way for the movement of the consumable. The first threshold is greater than the second threshold.

[0046] The positioning member 200 is used to move under the action of external force so that the stop member 210 moves between the positioning position and the yielding position.

[0047] The consumable transport device can be a separate mechanism from the printhead, meaning the main body 100 is separate from the printhead, and the consumable transport device is used to transport consumables to the printhead. The consumable transport device can also include a front-end channel and an extrusion mechanism. The front-end channel corresponds to the consumable channel, the discharge port 101 corresponds to the consumable channel inlet of the printhead, and the extrusion mechanism is located between the front-end channel and the consumable channel. The extrusion mechanism is used to clamp and push the consumables sequentially through the front-end channel and the consumable channel, then remove them from the discharge port 101 and further into the printhead. Alternatively, the consumable transport device can function as the printhead itself, meaning the main body 100 is the printhead body, and the consumable transport device is used to spray consumables onto the printing platform. The consumable transport device, or printhead, may also include a front-end channel, an extrusion mechanism, a converging channel, a heating element, and a nozzle. The front-end channel corresponds to the consumable channel, and the discharge port 101 corresponds to the converging channel. The converging channel can be located inside the heating element or independently of it. The nozzle is connected to the heating element. The extrusion mechanism is located between the front-end channel and the consumable channel. The extrusion mechanism is used to clamp and push the consumable through the front-end channel and the consumable channel in sequence, then remove it from the discharge port 101 and enter the heating element through the converging channel to melt, and then spray it out through the nozzle to the printing platform. The consumable channel is the channel located in the middle area of ​​the consumable transport channel. The consumable channel can be the channel between the extrusion mechanism and the heating block. Both the consumable channel and the aforementioned front-end channel can be channels directly opened on the main body 100, or the main body 100 can include a housing 110 and a lower guide 120. The lower guide 120 has a consumable channel and is detachably connected to the housing 110 for easy processing and replacement. The main body 100 also includes an upper guide 130, which has a front end channel and is detachably connected to the housing 110.

[0048] The consumable channel can be a single channel for conveying a single consumable, or multiple channels can be used for conveying various consumables. The inner diameter of the consumable channel can be slightly larger than the outer diameter of the consumable, such as by 0.05 mm or 1 mm. The outlet 101 is the opening at the rear end of the consumable channel in the consumable conveying direction during the consumable spraying process, or... Figure 2 Taking the central direction as an example, the discharge port 101 is the bottom opening of the consumable channel. The preset direction is vertically downward, or as shown below. Figure 2 The consumables channel converges in a downward-sloping direction. It can be a straight channel extending in a preset direction, or it can be a curved channel.

[0049] When positioning, the ratio of the overlapping area of ​​the projection of the stop 210 and the projection of the outlet 101 to the projection of the outlet 101 is greater than or equal to a first threshold. This means that at least a portion of the projection of the stop 210 overlaps with the projection of the outlet 101. In other words, the positioning member 200 covers at least a portion of the outlet 101 in the consumable conveying direction, or the positioning member 200 blocks a portion of the outlet 101. The overlap ratio should ensure that consumables do not pass through the outlet 101 through non-overlapping areas. The stop 210 and the main body 100 can slide against each other, such as sliding against the bottom surface of the aforementioned lower guide 120, making the position of the stop 210 more accurate. Moreover, when positioning, the stop 210 directly blocks the outlet 101 from the plane where the outlet 101 is located, with no gap between it and the outlet 101, thereby preventing consumables from leaking out between the outlet 101 and the stop 210. Alternatively, the positioning element 200 can be spaced apart from the main body 100, that is, the positioning element 200 can be spaced apart from the edge of the discharge port 101. The positioning element 200 indirectly blocks the discharge port 101, which can reduce the moving resistance of the stop 210. When there are multiple discharge ports 101, the upper surface of the positioning element 200 can be parallel to the plane formed by the centers of all discharge ports 101, thereby ensuring that the height of the ends of all consumables is consistent when positioning multiple consumables.

[0050] The positioning element 200 can block only a portion of the outlet 101, or it can block the entire outlet 101, preventing the consumable from moving further downwards due to the obstruction of the positioning element 200. In an optional embodiment, the first threshold is greater than or equal to 0.2. If the positioning element 200 can completely block the outlet 101, that is, the overlapping area of ​​the projection of the positioning element 200 and the projection of the outlet 101 occupies the entire area of ​​the projection of the outlet 101, the first threshold is 1. Alternatively, when the inner diameter of the consumable channel is greater than the outer diameter of the consumable by 0.1 mm, the positioning element 200 is allowed to at least block the annular area 0.1 mm away from the edge of the projection of the outlet 101. For example, if the outer diameter of the consumable is 1.75 mm, the ratio of the area of ​​the consumable to the area of ​​the outlet 101 is approximately 0.8, that is, the projection of the positioning element 200 occupies at least 0.2 of the projection of the outlet 101 to satisfy the requirement of limiting the consumable. During filament installation, the filament is inserted into the extruder through the front channel and then continues into the filament channel until its end abuts against the positioning element 200. As the filament continues to be fed into the channel, it will be unable to move, thus providing feedback on its positioning. After all filaments are installed, the positioning element 200 can be moved to a clearance position, making room for the filaments at least in the filament passage direction at the discharge port 101. When the extruder drives the filaments to move, they can start from the position positioned by the positioning element 200 and continue moving towards the heating block, ensuring accurate starting position and guaranteeing printing quality.

[0051] When the positioning element is in the yielding position, the ratio of the overlapping area of ​​the projection of the stop 210 and the projection of the outlet 101 to the projection of the outlet 101 is less than or equal to a second threshold. In an optional embodiment, the projection of the stop 210 and the projection of the outlet 101 may not overlap at all, that is, the positioning element 200 is completely located outside the outlet 101 in the consumable conveying direction, and the second threshold is 0. Alternatively, the positioning element 200 may block a portion of the outlet 101, and the overlap ratio should ensure that the consumable can pass through the outlet 101 through the non-overlapping area, and the second threshold is less than 0.2. For example, the positioning element 200 may be completely located outside the outlet 101, that is, the overlap area between the projection of the positioning element 200 and the projection of the outlet 101 is 0. Alternatively, when the inner diameter of the consumable channel is 0.1 mm larger than the outer diameter of the consumable, the area that the positioning element 200 can block at most should be smaller than the annular area 0.1 mm away from the edge of the projection of the outlet 101. For example, if the outer diameter of the consumable is 1.75 mm, the ratio of the area of ​​the consumable to the area of ​​the outlet 101 is about 0.8, that is, the projection of the positioning element 200 occupies at least less than 0.2 of the projection of the outlet 101, so as to satisfy the limitation of the consumable.

[0052] The movement of the positioning component 200 can be achieved manually, or it can be automatically driven by a combination of a drive motor and a transmission component, or it can be manually switched in conjunction with an energy storage component.

[0053] This utility model discloses a consumable conveying device and a stereolithography equipment. When a stop is in its positioning position, it covers at least a portion of the outlet in a preset direction. During consumable installation, the stop prevents the consumable from moving further in the preset direction. The consumable resists the stop, preventing further forward movement under pressure, thus providing feedback that the consumable is properly installed. This avoids problems such as insufficient consumable insertion leading to insufficient ejection, or excessive insertion causing leakage and blockage of the converging channel. During printing, the stop moves to a clearance position, opening the outlet. The consumable can then pass through the outlet and enter the converging channel under the action of the extrusion mechanism, achieving consumable conveying and printing.

[0054] The stop 210 can move between the positioning position and the yielding position in various ways, ensuring that it can block the conveyance of consumables or make way for the conveyance of consumables in a preset direction. For example, the stop 210 can move linearly or curvedly in the horizontal plane to achieve position switching. If the discharge port 101 can be multiple openings arranged side-by-side in a single direction, and the stop 210 is a plate-like structure, it can move linearly parallel to the direction of the discharge port 101. Alternatively, the stop 210 can rotate around an axis. In one embodiment, the stop 210 is a plate-like structure, specifically a disc-like structure, and is arranged horizontally, achieving position switching by rotating around a vertical axis. In some other embodiments, the stop 210 can be flipped to achieve position switching. For example, if the stop 210 is a plate-like structure, it can be flipped around the horizontal axis to be arranged horizontally, thus blocking the discharge port 101; or it can be flipped to be arranged vertically or flipped 180 degrees to open the discharge port 101.

[0055] When the stop 210 is in the clearance position, it can be moved entirely to the outside of the area where the discharge port 101 is located. If there are four discharge ports 101 arranged in a rectangle, the stop 210 can be moved entirely to the outside of the area enclosed by all the discharge ports 101, and the moving distance of the stop 210 is at least the distance between two adjacent discharge ports 101. Alternatively, at least one clearance opening 211 can be provided on the stop 210. When the positioning member 200 is in the clearance position, the clearance opening 211 corresponds to the discharge port 101 in a preset direction. When the positioning member 200 is in the positioning position, the stop 210 blocks the discharge port 101. In the embodiment with four rectangularly distributed discharge ports 101, the baffle 210 does not need to move to the outside of the area enclosed by all the discharge ports 101, but only needs to move to the clearance port 211 to be offset from the discharge port 101. The moving distance of the baffle 210 can be only the inner diameter of the discharge port 101. Alternatively, when positioning, if the baffle 210 only blocks part of the discharge port 101, the distance that the baffle 210 needs to move is even smaller. This can greatly reduce the moving distance of the baffle 210, reduce the space occupied by the baffle 210, and make the operation more convenient.

[0056] In one embodiment, there can be multiple discharge ports 101 and equal numbers of clearance ports 211. The clearance ports 211 are arranged in a single direction or distributed around the rotation axis of the stop member 210. For example, there can be four clearance ports 211 arranged in a single direction, or four clearance ports 211 arranged in a rectangle as described in the previous embodiment. The stop member 210 can be rotated to change its position. The rotation axis is the center of the area formed by the four clearance ports 211. The stop member 210 has a regular shape, which reduces the space occupied by the movement of the stop member 210.

[0057] The yielding port 211 can be as follows Figure 5As shown, the notch provided on the stop 210 can reduce the space occupied by the stop 210. Alternatively, the clearance opening 211 is a through hole provided on the stop 210, which can increase the mechanical strength of the stop 210 and prevent the edge from deforming after long-term use.

[0058] In one embodiment, the positioning member 200 further includes a connecting member 220. A movable guide 102 is provided on the main body 100. The stop member 210 is connected to the connecting member 220. The connecting member 220 is movably connected to the main body 100 via the movable guide 102. The movable guide 102 supports the stop member 210 via the connecting member 220 and guides the movement direction of the stop member 210. Depending on the movement mode of the stop member 210, the structure of the movable guide 102 can be varied. For example, in an embodiment where the stop member 210 moves horizontally in a straight line, the movable guide 102 can be a horizontally extending strip-shaped opening. The connecting member 220 passes through the strip-shaped opening and can then move along the strip-shaped opening under external force. The connecting member 220 provides support for the stop member 210 and guides its movement. Alternatively, in an embodiment where the stop 210 is used for rotation, the moving guide 102 includes a connecting hole extending vertically and located above the stop 210. The connecting member 220 includes a through portion 221 and a locking head 222. The through portion 221 is connected to the stop 210, and the locking head 222 is disposed in the through portion 221. The through portion 221 passes through the connecting hole, and the locking head 222 acts against the top edge of the stop 210 opposite to the connecting hole to limit the position of the stop 210 in the axial direction of the moving guide 102. The through portion 221 is used for rotation relative to the connecting hole. The through portion 221 can be slidably connected to the inner wall of the connecting hole to limit the radial position of the through portion 221.

[0059] To facilitate the installation of the threaded portion 221, the locking head 222 can be elastic, allowing the threaded portion 221 to be installed by pressing the locking head 222. Alternatively, the first end of the threaded portion 221 can be connected to the stop 210, and the second end of the threaded portion 221 can be spring-loaded under external force, with the locking head 222 positioned at the second end of the threaded portion 221. Figure 5-8 As shown, there are two through-holes 221, both of which are approximately semi-cylindrical structures and are spaced apart. The locking heads 222 are respectively located on opposite sides of the two through-holes 221. The locking heads 222 enter the connecting hole by the through-holes 221 moving closer together. After passing through the connecting hole, the through-holes 221 restore their shape, causing the locking heads 222 to lock onto the edge of the connecting hole.

[0060] In one embodiment, the main body 100 is provided with a first limiting part and a second limiting part. When the stop member 210 moves from the yielding position to the positioning position, the first limiting part acts on the positioning member 200, thereby restricting the stop member 210 from moving further away from the yielding position, thus confining the positioning member 200 to the positioning position. When the positioning member 200 moves from the positioning position to the yielding position, the second limiting part acts on the positioning member 200, thereby restricting the stop member 210 from moving further away from the positioning position, thus confining the positioning member 200 to the yielding position, so that the stop member 210 moves between the positioning position and the yielding position without exceeding this range. The first limiting part and the second limiting part can be implemented in various ways, depending on the movement mode of the stop member 210. The first limiting part and the second limiting part can act directly or indirectly on the stop member 210. In one embodiment, such as... Figure 5-6 and Figure 9 As shown, the positioning member 200 also includes an extension member 230, which is connected to the stop member 210. A limiting groove 103 is formed on the main body 100. In the aforementioned embodiment where the main body 100 includes a lower guide member 120, the discharge port 101 is located on the bottom surface of the lower guide member 120, and the limiting groove 103 is disposed on the bottom surface of the lower guide member 120. At least a portion of the structure of the extension member 230 is embedded in the limiting groove 103, and the first limiting portion and the second limiting portion are different side walls of the limiting groove 103. When the stop member 210 rotates or moves linearly, the extension member 230 moves synchronously with the stop member 210, limiting the range of movement by abutting against the side walls of the limiting groove 103. In some other embodiments, the main body 100 may have a limiting hole, the extension 230 may be inserted into the limiting hole, the first limiting part and the second limiting part may be different side walls of the limiting hole, and when the extension 230 and the stop 210 move synchronously, the movement range is limited by abutting against the side walls of the limiting hole.

[0061] In one implementation, such as Figure 9 As shown, a mounting groove 104 is provided on the bottom surface of the main body 100, or lower guide 120. At least a portion of the structure of the stop 210 is embedded in the mounting groove 104, which can further limit the position of the stop 210. The surface of the stop 210 opposite to the main body 100 is on the same plane as the opening of the mounting groove 104, thereby allowing the stop 210 to be fully embedded, reducing space occupation, simplifying the appearance, and reducing the risk of the stop 210 being obstructed by other structures.

[0062] The positioning element 200 can be moved manually, as in one embodiment, such as... Figure 5-8As shown, the positioning component 200 also includes a force-applying handle 240, which is connected to the stop component 210. The force-applying handle 240 is used to apply external force. The stop component 210 can be moved to either the clearance position or the positioning position by manually moving the force-applying handle 240. Alternatively, an elastic element can be provided, which is at least connected to the positioning component 200. When the stop component 210 moves from the clearance position to the positioning position, the elastic element stores energy; when the stop component 210 moves from the positioning position to the clearance position, the elastic element releases energy. That is, during filament installation, the force-applying handle 240 is manually pushed to drive the stop component 210 from the clearance position to the positioning position, thereby achieving the insertion and positioning of the filament. After the filament installation is completed, the handle is released, and the elastic element releases energy, driving the stop component 210 back to the clearance position. This operation is convenient and helps the stop component 210 remain in the clearance position, preventing the stop component 210 from shifting position due to vibration or accidental contact during printing.

[0063] The elastic element can be of various types, such as springs, coil springs, foam, soft rubber, etc. The connection method between the elastic element and the positioning element 200 includes at least one of the following: snap-fit, hook-fit, plug-fit, adhesive, and magnetic connection. The elastic element can be connected to the stop element 210 or to the force-applying handle 240. Figure 5-8 As shown, a first suspension head 241 is provided on the force application handle 240, and a second suspension head can be provided on the main body 100. The two ends of the spring are respectively attached to the first suspension head 241 and the second suspension head.

[0064] In one implementation, such as Figure 4 As shown, the main body 100 is also provided with a force application guide 105. The force application handle 240 interacts with the force application guide 105, and the force application guide 105 is used to guide the movement direction of the force application handle 240.

[0065] Depending on the movement mode of the stop 210, the movement trajectory of the force-applying handle 240 will differ, and the force-applying guide 105 can have various configurations. For example, the force-applying guide 105 may include a guide hole or a guide groove, with the force-applying handle 240 passing through the guide hole or guide groove and slidably connected to the inner wall of the guide hole or guide groove. In embodiments where the stop 210 moves horizontally or rotates, the force-applying guide 105 may be a horizontally extending guide groove. Alternatively, in embodiments where the stop 210 flips, the force-applying guide 105 may be an arc-shaped extending groove or hole that adapts to the movement path of the force-applying handle 240.

[0066] On the other hand, this invention also provides a stereolithography apparatus, including a consumable transport device as described above, as well as a base, a gantry mechanism, an X-axis mechanism, and a printing platform. The consumable transport device can be used as a print head. The consumable transport device is driven and connected to the X-axis mechanism. The gantry mechanism is mounted on the base, the printing platform is connected to the base, and the X-axis mechanism is driven and connected to the gantry mechanism. The consumable transport device is located above the printing platform and is used to spray consumables onto the printing platform. Alternatively, the consumable transport device is only used for transporting consumables. The stereolithography apparatus also includes a print head, which is driven and connected to the X-axis mechanism. The gantry mechanism is mounted on the base, the printing platform is connected to the base, and the X-axis mechanism is driven and connected to the gantry mechanism. The print head is located above the printing platform and is used to spray consumables onto the printing platform. The consumable transport device can be connected to the gantry mechanism, the X-axis mechanism, or the print head, or a separate fixed bracket can be provided to fix the consumable transport device.

[0067] The 3D forming equipment includes any of the aforementioned consumable transfer devices, and the advantages of including any of the aforementioned consumable transfer devices will not be elaborated here.

[0068] 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 consumables transfer device, characterized in that, include: The main body has at least one consumable channel, the consumable channel including a discharge port for passing consumables through in a preset direction; A positioning component, comprising a stop, wherein the position of the stop includes a positioning position and a clearance position, wherein when the stop is in the positioning position, in the preset direction, the ratio of the overlapping area of ​​the projection of the stop and the projection of the discharge port to the projection of the discharge port is greater than or equal to a first threshold, thereby blocking the consumable; wherein when the stop is in the clearance position, in the preset direction, the ratio of the overlapping area of ​​the projection of the stop and the projection of the discharge port to the projection of the discharge port is less than or equal to a second threshold, thereby making way for the movement of the consumable, wherein the first threshold is greater than the second threshold; The positioning element is used to move under the action of an external force so that the stop can move between the positioning position and the yielding position.

2. The consumables transfer device according to claim 1, characterized in that, The stop member moves between the positioning position and the clearance position in a manner that includes at least one of linear movement, curved movement, rotation, and flipping. When the stop member moves in a linear manner, curved movement, or flipping, the stop member has a plate-like structure. When the stop member rotates, the stop member has a disc-like shape. And / or, the first threshold is greater than or equal to 0.2, and the second threshold is less than 0.

2.

3. The consumables transmission device according to claim 1, characterized in that, The positioning component also includes a connector, and a movable guide is provided on the main body. The stop is connected to the connector, and the connector is movably connected to the main body through the movable guide. The movable guide is used to guide the movement direction of the stop. The movable guide includes a connecting hole, the connecting member includes a through part and a locking head, the through part is connected to the stop, the locking head is disposed in the through part, the through part passes through the connecting hole, and the locking head acts on the edge of the connecting hole to limit the position of the stop in the axial direction of the connecting hole; The clip is elastic, or the first end of the through part is connected to the stop, the second end of the through part is used to bounce under the action of external force, and the clip is disposed at the second end of the through part.

4. The consumables transmission device according to claim 1, characterized in that, The stop is provided with at least one clearance opening. When the positioning member is in the clearance position, the clearance opening corresponds to the discharge port in the preset direction. The clearance opening is a notch provided on the stop member. There are multiple discharge ports and clearance openings, and the number is the same. The clearance openings are arranged in a single direction, or distributed around the rotation axis of the stop member. Alternatively, the clearance opening is a through hole provided on the stop member. There are multiple discharge ports and clearance openings, and the number is the same. The clearance openings are arranged in a single direction, or distributed around the rotation axis of the stop member.

5. The consumables transmission device according to claim 1, characterized in that, The main body is provided with a first limiting part and a second limiting part. When the stopper moves to the positioning position, the first limiting part acts with the positioning member. When the positioning member moves to the yielding position, the second limiting part acts with the positioning member, thereby restricting the position of the stopper between the positioning position and the yielding position.

6. The consumables transmission device according to claim 5, characterized in that, The positioning element further includes an extension element, which is connected to the stop element; A limiting groove is formed on the main body, and at least a part of the structure of the extension is embedded in the limiting groove, wherein the first limiting part and the second limiting part are different side walls of the limiting groove; Alternatively, a limiting hole is provided on the main body, and the extension is inserted into the limiting hole, wherein the first limiting part and the second limiting part are different side walls of the limiting hole.

7. The consumables transmission device according to claim 1, characterized in that, The stopper slides against the main body; The main body has a mounting groove, and at least a portion of the structure of the stop is embedded in the mounting groove; The surface of the stop opposite to the main body is on the same plane as the opening of the mounting groove.

8. The consumables transmission device according to claim 1, characterized in that, The positioning component further includes a force-applying handle, which is connected to the stop and is used to apply the external force. The main body is also provided with a force-applying guide, and the force-applying handle interacts with the force-applying guide. The force-applying guide is used to guide the movement direction of the force-applying handle. The force-applying guide includes a guide hole or a guide groove, and the force-applying handle passes through the guide hole or the guide groove and is slidably connected to the inner wall of the guide hole or the guide groove.

9. The consumables transmission device according to claim 1, characterized in that, Also includes: An elastic element is at least connected to the positioning element. When the stop moves from the yielding position to the positioning position, the elastic element stores energy, and when the stop moves from the positioning position to the yielding position, the elastic element releases energy. The connection method between the elastic element and the positioning element includes at least one of snap-fit, hook-fit, plug-fit, adhesive, and magnetic connection.

10. A three-dimensional forming device, characterized in that, The consumables transfer device includes any one of claims 1-9.

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