Stock bin, 3D printing feeding device and 3D printing system

Abstract

The utility model discloses a stock bin, a 3D printing feeding device and a 3D printing system, the stock bin comprises a box body, a communicating piece and a guiding piece, and the box body is provided with an inner cavity; the communicating piece is arranged in the inner cavity, the communicating piece is provided with a discharging channel and at least one feeding channel, and the discharging channel is communicated with the feeding channel; the communicating piece further comprises a discharging releasing ring, one end of the discharging releasing ring extends into the discharging channel, the other end of the discharging releasing ring extends out of the discharging channel, and the discharging releasing ring is used for locking or releasing the extending material guiding pipe extending out of the box body from the discharging releasing ring. And the guide piece penetrates to the inner cavity from the outside of the box body and is movably connected with the box body so as to abut against the discharging release ring. The guiding piece movably abuts against the discharging releasing ring, the discharging releasing ring can be switched from the locking state to the releasing state, then a user can conveniently pull out the extending material guiding pipe from the discharging releasing ring from the outside of the box body, and therefore the user can conveniently clean broken wire materials extending out of the material guiding pipe.

Description

Technical Field

[0001] This application relates to the field of 3D printing technology, and particularly to a material bin, a 3D printing feeding device, and a 3D printing system. Background Art

[0002] A 3D printer (also known as a three-dimensional printer or a stereoscopic printer) constructs three-dimensional objects by printing layer by layer. The 3D printer includes a print head for extruding printing materials and a printing platform for depositing printing materials to form three-dimensional objects. The print head is configured to be able to move relative to the printing platform and extrude the printing materials onto the surface of the printing platform while moving.

[0003] During the working process of a 3D printer, the wire material that supplies printing materials to the 3D printer sometimes breaks, which may cause the 3D printer to malfunction. In existing 3D printers, the operation of cleaning the broken wire material is complex, and the wire material is not thoroughly cleaned. Utility Model Content

[0004] This application provides a material bin, a 3D printing feeding device, and a 3D printing system that are convenient for cleaning broken wire materials.

[0005] In a first aspect, this application provides a material bin, which includes:

[0006] A box body having an inner cavity;

[0007] A connecting member disposed in the inner cavity. The connecting member has a discharge channel and at least one feeding channel. The discharge channel is in communication with the feeding channel. The connecting member further includes a discharge release ring. One end of the discharge release ring extends into the discharge channel, and the other end of the discharge release ring extends out of the discharge channel. The discharge release ring is used to lock or release an extending guide pipe that extends from the discharge release ring to the outside of the box body;

[0008] A guiding member. The guiding member penetrates from the outside of the box body to the inner cavity. The guiding member is movably connected to the box body to press against the discharge release ring.

[0009] In a feasible implementation, the guiding member includes a connected guiding portion and a sealing portion. The guiding portion allows the extending guide pipe to pass through from the inner cavity to the outside of the box body. The guiding portion is used for movably abutting against the discharge release ring. The sealing portion is connected to the box body.

[0010] In a feasible implementation, at least a part of the sealing portion extends into the guiding portion. The sealing portion is used for allowing the extending guide pipe to pass through and tightly connecting with the extending guide pipe. The guiding portion is fixedly connected to the sealing portion.

[0011] In a feasible implementation manner, the sealing portion includes a sealing tube and a sealing ring. The sealing tube extends into the guiding portion and allows the protruding material guiding tube to pass through. The outer surface of the sealing tube is in close contact with the guiding portion, and the inner surface of the sealing tube is in close contact with the protruding material guiding tube. The sealing ring extends out of the guiding portion and is sealingly connected to the box body.

[0012] In a feasible implementation manner, a first sealing tooth protrudes radially inward along the inner surface of the sealing tube, and the first sealing tooth is in close contact with the outer surface of the protruding material guiding tube.

[0013] In a feasible implementation manner, the box body has a through hole for the sealing ring to extend into the inner cavity;

[0014] A hollow boss is provided on one side of the box body facing the inner cavity. The boss surrounds the through hole, and the boss is snap-fitted or in close contact with the sealing ring.

[0015] In a feasible implementation manner, along the axial direction of the through hole, the area between the connection of the sealing ring and the boss and the connection of the sealing ring and the guiding portion is bent to provide a deformation space required for the movement of the guiding portion.

[0016] In a feasible implementation manner, along the radial direction of the sealing ring, a second sealing tooth is provided on the side of the sealing ring in contact with the boss, and the second sealing tooth is in close contact with the contact surface of the boss when moving along the axial direction of the through hole.

[0017] In a feasible implementation manner, the boss has a first limiting edge that extends radially inward along the boss;

[0018] The sealing ring has a first card slot, and the first limiting edge extends into the first card slot.

[0019] In a feasible implementation manner, the guiding portion is provided with a second limiting edge, the sealing ring has a second card slot spaced from the first card slot, and the second limiting edge extends into the second card slot.

[0020] In a feasible implementation manner, the guiding member further includes an elastic member. A limiting flange protrudes from the outer periphery of the guiding portion, and the limiting flange is connected to the sealing ring;

[0021] A sink is provided on the outer surface of the box body, and the elastic member is connected between the bottom wall of the sink and the limiting flange. The sealing ring is in movable close contact with the side wall of the sink.

[0022] In a feasible implementation manner, the sealing ring is a flexible elastic body.

[0023] In a feasible implementation, the box body includes a bottom plate and side plates, the side plates surround the bottom plate and are connected to the bottom plate, and the guide portion passes through the side plates and forms an angle of 15°-50° with the bottom plate.

[0024] In a feasible implementation, the silo also includes a base for accommodating the connecting piece, and the connecting piece also includes an active friction wheel and a driven friction wheel arranged in the discharge channel, and the outer periphery of the active friction wheel and the outer periphery of the driven friction wheel have a gap for the wire material to extend into, and the connecting piece is provided with a button on the side away from the bottom plate, and the button is used to drive the driven friction wheel to change the size of the gap between the outer periphery of the active friction wheel and the outer periphery of the driven friction wheel, and the button is exposed relative to the side of the base facing the outside of the silo.

[0025] In a feasible implementation, the connecting member also includes a connecting rod structure and a return spring, the driven friction wheel is rotatably connected to the connecting rod structure, the connecting rod structure is used to drive the driven friction wheel closer to or away from the active friction wheel, and the return spring connects the button and the connecting rod structure.

[0026] In a feasible implementation, the connecting piece also includes a feed release ring, which extends into the feed channel and allows the built-in material guide tube to pass through. The feed release ring is used to drive the latch in the connecting piece to lock or release the built-in material guide tube.

[0027] In a second aspect, the present application provides a 3D printing feeding device, which is used in a 3D printing system. The 3D printing feeding device includes a material tray and a material bin as described in the first aspect, and the material tray is installed in the material bin and is used to carry wire material.

[0028] In a third aspect, the present application further provides a 3D printing system, which includes a 3D printer and a 3D printing feeding device as described in the second aspect, wherein the 3D printing feeding device provides wire material for the 3D printer.

[0029] In this solution, the guide member extends from outside the box body to the inner cavity, and the guide member can press the discharge release ring to switch the discharge release ring from a locked state to a released state, thereby making it convenient for the user to pull out the material guide tube from the discharge release ring from outside the box body, thereby making it convenient for the user to clean the broken wire material in the material guide tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0031] Figure 1 A cross-sectional view of a silo provided by an embodiment of the present application;

[0032] Figure 2 An exploded schematic view of a connecting member provided by an embodiment of the present application;

[0033] Figure 3 A cross-sectional view of a guiding member provided by an embodiment of the present application;

[0034] Figure 4 A front view of a silo provided by an embodiment of the present application;

[0035] Figure 5 A three-dimensional structural diagram of a guiding member provided by an embodiment of the present application;

[0036] Figure 6 A top view of a silo provided by an embodiment of the present application;

[0037] Figure 7 A three-dimensional structural diagram of a box body provided by an embodiment of the present application;

[0038] Figure 8 A cross-sectional view of a base provided by an embodiment of the present application;

[0039] Figure 9 A top view of a base provided by an embodiment of the present application;

[0040] Figure 10 A bottom view of a base provided by an embodiment of the present application;

[0041] Figure 11 A three-dimensional structural diagram of a base provided by an embodiment of the present application;

[0042] Figure 12 A structural diagram of a flexible release plate connected to a plurality of feed release rings provided by an embodiment of the present application;

[0043] Figure 13 A three-dimensional structural diagram of a material guiding assembly connected to a base provided by an embodiment of the present application;

[0044] Figure 14 A three-dimensional structural diagram of a material guiding assembly provided by an embodiment of the present application;

[0045] Figure 15 A cross-sectional view of a material guiding assembly provided by an embodiment of the present application;

[0046] Figure 16 Another cross-sectional view of a material guiding assembly provided by an embodiment of the present application;

[0047] Figure 17 Schematic diagram of the assembly of the material guiding member and the reinforcing member provided in an embodiment of the present application;

[0048] Figure 18 Cross-sectional view of the active feeding wheel of the material guiding assembly provided in an embodiment of the present application;

[0049] Figure 19 is Figure 18 Enlarged view of part A in

[0050] Figure 20 Schematic structural diagram of the indicating member in the material guiding assembly provided in an embodiment of the present application.

[0051] Explanation of reference numerals:

[0052] 1000, material bin; 100, box body; 100a, inner cavity; 101, bottom plate; 102, side plate; 103, base; 104, groove; 105, hole; 106, wire groove; 107, heating cavity; 108, heater; 109, guiding member; 110, guiding portion; 111, sealing portion; 112, sealing tube; 113, sealing ring; 114, first sealing tooth; 115, second sealing tooth; 116, boss; 117, first limiting edge; 118, first card slot; 119, second limiting edge; 120, second card slot; 123, elastic member; 123a, limiting flange; 123b, counterbore; 124, box cover; 125, heat flow outlet; 127, fan; 128, recessed area; 129, drying cavity; 200, connecting member; 201a, feeding channel; 201b, discharging channel; 202a, feeding release ring; 202b, discharging release ring; 203, flexible release plate; 204, active friction wheel; 205, driven friction wheel; 208, link structure; 209, return spring; 210, rotating shaft; 211, Hall sensor; 212, button; 300, material guiding assembly; 301, material guiding member; 302, reinforcing member; 303, feeding channel; 304, feeding port; 305, discharging port; 306, mounting groove; 307, first step; 308, second step; 309, first peripheral surface; 310, first plane; 311, second peripheral surface; 312, second plane; 313, upper arc surface; 314, lower arc surface; 315, main body arc surface; 316, cylindrical hole; 317a, flared hole section; 317b, material guiding channel section; 318, third peripheral surface; 319, active feeding wheel; 320, driven feeding wheel; 321, communication port; 322, notch; 323, convex block; 324, outer cover; 325, indicating member; 326, light guiding portion; 327, mounting portion; 328, mounting plane. Detailed implementation manners

[0053] To make the objectives, technical solutions, and advantages of this application more clear, the following will further describe this application in detail with reference to the accompanying drawings.

[0054] The embodiment of this application provides a 3D printing system. The 3D printing system includes a 3D printer and a 3D printing feeding device. The 3D printing feeding device is connected to the 3D printer, and the 3D printing feeding device is used to supply wire materials for printing to the 3D printer.

[0055] Among them, the 3D printing feeding device includes a material tray and a material bin. The material tray is installed in the material bin, and the material tray is used to carry wire materials. Specifically, the wire materials are wound around the material tray. The material tray can rotate. When the wire materials drag the material tray to rotate forward, the material tray releases the wire materials, and the 3D printing feeding device can supply wire materials to the 3D printer. When the material tray rotates in reverse, the material tray can recover the released wire materials.

[0056] The 3D printing feeding device further includes a rotating roller. The rotating roller is arranged in the box body and is located on the outer periphery of the material tray. When the 3D printing feeding device needs to recover wire materials, the rotating roller drives the material tray to rotate, and the connecting member is at least partially located below the rotating roller. The rotating roller can drive the material tray to rotate to realize the winding of wire materials.

[0057] Please refer to Figure 1 , the material bin 1000 includes a box body 100, a connecting member 200, and a guiding member 109. The box body 100 has an inner cavity 100a. Among them, the connecting member 200 is arranged in the inner cavity 100a.

[0058] Please refer to Figure 2 , the connecting member 200 has a discharge channel 201b and at least one feed channel 201a. In some embodiments, the number of feed channels 201a is more than two, and each feed channel 201a is communicated with the discharge channel 201b.

[0059] The connecting member 200 further includes a discharge release ring 202b and at least one feed release ring 202a. One end of the discharge release ring 202b extends into the discharge channel 201b, and the other end of the discharge release ring 202b extends out of the discharge channel 201b. One end of the extending guide pipe is inserted into the discharge channel 201b, and the other end extends out of the discharge channel 201b, and the extending guide pipe is arranged in the discharge release ring 202b. In some embodiments, the extending guide pipe extends out of the box body 100. The part of the extending guide pipe extending out of the box body 100 can be connected to the 3D printer. The extending guide pipe can accommodate wire materials and is used to guide the wire materials, and the extending guide pipe conveys the wire materials to the 3D printer.

[0060] The discharge release ring 202b is used to lock or release the extended guide pipe that extends from the discharge release ring 202b to the outside of the box body 100. When the discharge release ring 202b releases the extended guide pipe, the user can pull out the extended guide pipe from outside the box body 100, so as to facilitate the transportation and disassembly of the silo, or to facilitate the handling of the broken wire material in the extended guide pipe. When the discharge release ring 202b locks the extended guide pipe, it can limit the extended guide pipe, so that the extended guide pipe can more stably convey the wire material to the 3D printer.

[0061] The number of the feeding release rings 202a is the same as the number of the feeding channels 201a. Each feeding release ring 202a extends into the corresponding feeding channel 201a, and each feeding release ring 202a is provided with an internal guide pipe for conveying the wire material to the extended guide pipe. The feeding release ring 202a is used to lock or release the internal guide pipe. When the feeding release ring 202a locks the internal guide pipe, the feeding release ring 202a limits the internal guide pipe to improve the stability of the internal guide pipe for conveying the wire material. When the feeding release ring 202a releases the internal guide pipe, it is convenient for the user to pull out the internal guide pipe, and then it is convenient for the user to handle the broken wire material in the internal guide pipe.

[0062] Continue to refer to Figure 1 and Figure 2 , the guide member 109 penetrates from outside the box body 100 to the inner cavity 100a. The guide member 109 is movably connected to the box body 100 to press against the discharge release ring 202b. It should be noted that the guide member 109 can move substantially along its axial direction. The guide member 109 is spaced apart from the discharge release ring 202b, and the guide member 109 can also press against the discharge release ring 202b. When the guide member 109 is spaced apart from the discharge release ring 202b, the discharge release ring 202b locks the extended guide pipe. When the guide member 109 presses against the discharge release ring 202b, the guide member 109 causes the discharge release ring 202b to switch from the locked state to the released state. At this time, the user can operate from outside the box body 100 to pull out the extended guide pipe from the discharge release ring 202b to the outside of the box body 100, so as to facilitate the transportation and disassembly of the silo, or to facilitate the cleaning of the broken wire material in the extended guide pipe.

[0063] Please refer to Figure 3 , the guide member 109 includes a connected guide portion 110 and a sealing portion 111. The guide portion 110 allows the extended guide pipe to pass through from the inner cavity 100a to the outside of the box body 100. The guide portion 110 is used for movably abutting against the discharge release ring 202b. The sealing portion 111 is connected to the box body 100, and the movable abutment can be either that the guide portion 110 directly abuts against the discharge release ring 202b or that the force is transmitted indirectly.

[0064] In the embodiments provided by the present application, the guiding portion 110 may be a rigid tubular structure. The guiding portion 110 is for the extending material guiding pipe to pass through. The extending material guiding pipe can partially extend outside the box body 100 or be arranged close to the housing of the box body 100 from the material discharging release ring 202b and the guiding portion 110.

[0065] The sealing portion 111 at least partially extends into the guiding portion 110. The sealing portion 111 is for the extending material guiding pipe to pass through and is tightly connected to the extending material guiding pipe. The guiding portion 110 is fixedly connected to the sealing portion 111.

[0066] The sealing portion 111 is used to seal the extending material guiding pipe and the guiding portion 110. The sealing portion 111 is also hermetically connected to the box body 100, and the sealing portion 111 and the box body 100 can move relative to each other. Since the guiding portion 110 is fixedly connected to the sealing portion 111, it can be understood that the guiding portion 110 can move relative to the box body 100. When the user needs to clean the broken wire material in the extending material guiding pipe, the user can push the guiding portion 110 outside the box body 100 to release the extending material guiding pipe from the material discharging release ring 202b, so as to facilitate the user to pull out the extending material guiding pipe from outside the box body 100 to clean the broken wire material in the extending material guiding pipe.

[0067] The sealing portion 111 includes a sealing pipe 112 and a sealing ring 113. The sealing pipe 112 extends into the guiding portion 110, and the sealing pipe 112 is for the extending material guiding pipe to pass through. The outer surface of the sealing pipe 112 is in close contact with the guiding portion 110, and the inner surface of the sealing pipe 112 is in close contact with the extending material guiding pipe. The sealing ring 113 extends out of the guiding portion 110 and is hermetically connected to the box body 100.

[0068] The sealing pipe 112 plays a certain limiting role on the extending material guiding pipe, so that the extending material guiding pipe can more stably convey the wire material to the 3D printer.

[0069] Since the sealing ring 113 is hermetically connected to the box body 100, the sealing performance of the box body 100 can be improved, and the air outside the box body 100 entering the inner cavity 100a can be reduced, so as to prevent the wire material arranged in the inner cavity 100a from being affected by moisture.

[0070] At least a part of the outer surface of the sealing pipe 112 is in close contact with the guiding portion 110, and the inner surface of the sealing pipe 112 is in close contact with the extending material guiding pipe, playing a role in sealing the guiding portion 110 and the extending material guiding pipe, and can prevent the air outside the box body 100 from entering the inner cavity 100a from the guiding portion 110.

[0071] In some embodiments, the sealing ring 113 and the sealing pipe 112 are integrally formed.

[0072] The inner surface of the sealing pipe 112 is radially and inwardly convex with a first sealing tooth 114, and the first sealing tooth 114 is in close contact with the outer surface of the extending material guiding pipe.

[0073] The extended material guiding tube is a flexible tube. The first sealing teeth 114 are in close contact with the outer surface of the extended material guiding tube, and the inner surface of the extended material guiding tube is in close contact with the wire material.

[0074] Specifically, the first sealing teeth 114 can squeeze the extended material guiding tube, so that the extended material guiding tube can be in close contact with the sealing tube 112, thereby blocking the gap between the extended material guiding tube and the sealing tube 112 and playing a sealing role.

[0075] It should be noted that the extended material guiding tube plays a guiding role for the wire material. During the process of the wire material being transmitted from the inner cavity 100a to the 3D printer (outside the box body 100), the wire material can move relative to the extended material guiding tube. After the water vapor enters the inside of the material bin 1000, it will have a negative impact on the wire material, making it easier for the wire material to break. In addition, the wire material getting damp will also reduce the quality of the products printed by the 3D printer.

[0076] In the embodiment provided by the present application, the position where the sealing tube 112 is located can be flexibly set. The sealing tube 112 can be arranged at one end of the guiding part 110 close to the discharge release ring 202b, or the sealing tube 112 can also be arranged at one end of the guiding part 110 far from the discharge release ring 202b. The present application does not make specific restrictions on the position where the sealing tube 112 is located.

[0077] The box body 100 has a through hole for the sealing ring 113 to extend into the inner cavity 100a; on one side of the box body 100 facing the inner cavity 100a, there is a hollow boss 116, and the boss 116 is arranged around the through hole, and the boss 116 is in snap connection or close contact with the sealing ring 113.

[0078] The boss 116 is used to be tightly connected with the sealing ring 113. In some embodiments, the boss 116 is generally a hollow cylindrical or hollow waist-shaped column. One end of the sealing ring 113 extending into the box body 100 is fixedly connected to the boss 116, and the other end of the sealing ring 113 is fixedly connected to one end of the sealing tube 112 extending out of the guiding part 110. The guiding part 110 penetrates through the boss 116, and the sealing ring 113 also penetrates through the boss 116. When pressing the guiding part 110 to make the guiding part 110 press against the discharge release ring 202b, the sealing ring 113 can be compressed and deformed. When no thrust is applied to the guiding part 110, the sealing ring 113 can actively reset by relying on its own elastic force, and then can drive the guiding part 110 to return to its original position, so that the guiding part 110 and the discharge release ring 202b return to the spaced position, so that the discharge release ring 202b is in the locked position, and thus the connecting member 200 can reliably convey the wire material.

[0079] In the embodiments provided by the present application, along the axial direction of the through hole, the area between the connection between the sealing ring 113 and the boss 116 and the connection between the sealing ring 113 and the guiding portion 110 is bent to provide a deformation space required for the movement of the guiding portion 110.

[0080] In some embodiments, please refer to Figure 4 , the sealing ring 113 surrounds the guiding portion 110. The sealing ring 113 is generally a hollow cylindrical shape, such as a cylindrical corrugated shape, a rectangular corrugated column shape, an oval corrugated column shape, etc. The part of the sealing ring 113 connected to the box body 100 is snap-connected or in close contact with the boss 116, and the sealing ring 113 is also snap-connected or in close contact with the guiding portion 110. Among them, the connection between the sealing ring 113 and the sealing tube 112 is spaced from the connection between the sealing ring 113 and the boss 116.

[0081] Since the connection between the sealing ring 113 and the sealing tube 112 and the connection between the sealing ring 113 and the boss 116 are bent. When the guiding portion 110 is pressed outside the box body 100, the bent area of the sealing ring 113 can undergo elastic deformation. It should be noted that pressing the guiding portion 110 can be in direct contact with the guiding portion 110 to make the guiding portion 110 move relative to the box body 100, or in indirect contact with the guiding portion 110 to make the guiding portion 110 move relative to the box body 100. Among them, indirectly contacting the guiding portion 110 to make the guiding portion 110 move relative to the box body 100 can be achieved by pressing the sealing portion 111 to make the guiding portion 110 move relative to the box body 100. The material of the sealing ring 113 can be a flexible material, such as rubber, plastic, polyurethane elastomer, etc.

[0082] Along the radial direction of the sealing ring 113, a second sealing tooth 115 is provided on the side of the contact surface of the sealing ring 113 with the boss 116. The second sealing tooth 115 is in close contact with the contact surface of the boss 116 when moving along the axial direction of the through hole.

[0083] By the second sealing tooth 115 being in close contact with the contact surface of the boss 116, the sealing ring 113 functions to seal the box body 100, and it is difficult for the air outside the box body 100 to enter the inner cavity 100a through the connection between the boss 116 and the sealing ring 113.

[0084] The boss 116 has a first limiting edge 117, and the first limiting edge 117 extends radially inward along the boss 116; the sealing ring 113 has a first card slot 118, and the first limiting edge 117 extends into the first card slot 118.

[0085] In some embodiments, a first clamping groove 118 is formed by recessing the outer surface of the sealing ring 113 facing away from the guiding portion 110. The first clamping groove 118 is generally annular. The first limiting edge 117 is also annular, and the structural shape of the first limiting edge 117 is adapted to the structural shape of the first clamping groove 118. The first limiting edge 117 is in close contact with the surface of the first clamping groove 118, which can play a sealing role and prevent relatively humid air outside the box body 100 from entering the box body 100.

[0086] The guiding portion 110 is provided with a second limiting edge 119. The sealing ring 113 has a second clamping groove 120 spaced apart from the first clamping groove 118, and the second limiting edge 119 extends into the second clamping groove 120.

[0087] In the embodiments provided in the present application, a second clamping groove 120 is formed by recessing the surface of the sealing ring 113 facing away from the boss 116. The second clamping groove 120 is generally annular. A second limiting edge 119 is formed on the outer surface of the guiding portion 110. The second limiting edge 119 is generally annular, and the structural shape of the second limiting edge 119 is adapted to the structural shape of the second clamping groove 120. The second limiting edge 119 is in close contact with the surface of the second clamping groove 120. The second limiting edge 119 is in close contact with the surface of the second clamping groove 120, which can play a sealing role and prevent relatively humid air outside the box body 100 from entering the box body 100. Among them, the first limiting edge 117 is in close contact with the surface of the first clamping groove 118, and the second limiting edge 119 is in close contact with the surface of the second clamping groove 120, which can play a dual-sealing role and greatly improve the sealing performance of the box body 100.

[0088] In some embodiments, please refer to Figure 1 , the guiding member 109 includes a guiding portion 110, a sealing portion 111 and an elastic member 123. The sealing portion 111 includes a sealing tube 112 and a sealing ring 113. The sealing tube 112 extends into the guiding portion 110 and is for the extending material guiding tube to pass through. The outer surface of the sealing tube 112 is in close contact with the guiding portion 110, and the inner surface of the sealing tube 112 is in close contact with the extending material guiding tube. The sealing ring 113 extends out of the guiding portion 110 and is sealingly connected to the box body 100.

[0089] A limiting flange 123a is convexly provided on the outer periphery of the guiding portion 110. The limiting flange 123a is connected to the sealing ring 113. A sunk groove 123b is provided on the outer surface of the box body 100. The elastic member 123 is connected between the bottom wall of the sunk groove 123b and the limiting flange 123a. The sealing ring 113 is in movable close contact with the side wall of the sunk groove 123b.

[0090] When the user pushes the guiding part 110 outside the box body 100 to press against the discharge release ring 202b, the elastic member 123 is compressed. When the user does not apply an external force to the guiding part 110, the elastic member 123 naturally extends and returns to its initial length (the length of the elastic member 123 before the user pushes the guiding part 110). The elastic member 123 will drive the guiding part 110 to reset and separate from the discharge release ring 202b. The elastic member 123 can be a spring.

[0091] In the embodiment provided by the present application, the sealing ring 113 is a flexible elastomer. Specifically, the material of the sealing ring 113 can be plastic, rubber, polyurethane (PU), etc.

[0092] Please continue to refer to Figure 1 、 Figure 5 、 Figure 6 and Figure 7 The box body 100 includes a bottom plate 101, side plates 102 and a base 103. The side plates 102 surround the bottom plate 101 and are connected to the bottom plate 101. The base 103 is disposed on the inner surface of the bottom plate 101. The guiding part 110 penetrates through the side plate 102 and forms an angle of 15° - 50° with the bottom plate 101.

[0093] In the embodiment provided by the present application, the length direction of the box body 100 is defined as the X direction, the width direction of the box body 100 is defined as the Y direction, the height of the box body 100 is defined as the Z direction, the axial direction of the guiding part 110 is the a direction, the axial direction of the guiding part 110 is consistent with the direction in which the feeding pipe extends through the guiding part 110, and the bottom plate 101 is parallel to the plane formed by the X direction and the Y direction.

[0094] In the embodiment provided by the present application, the box body 100 further includes a box cover 124. The box cover 124 is hinged to the side plate 102 and can be opened or closed. When the box cover 124 is closed, the box cover 124, the side plate 102 and the base 103 enclose a closed inner cavity 100a. Among them, the tray is disposed in the inner cavity 100a.

[0095] In the embodiment provided by the present application, the guiding member 109 passes through the side plate from outside the box body 100 and extends into the inner cavity 100a. The guiding member 109 is movably connected to the side plate 102. Among them, the guiding part 110 penetrates through the side plate 102 or is arranged to be open relative to the side plate 102. By arranging the guiding part 110 to penetrate through the side plate 102 or arranging the guiding part 110 to be open relative to the side plate 102, the guiding part can be operated without disassembling the side plate 102. It should be noted that the guiding part 110 being arranged to be open relative to the side plate 102 also includes the case where an elastic material is coated on the guiding part 110. By arranging the guiding part 110 and the elastic material in this way, the guiding part 110 can still be operated without disassembling the side plate, which meets the design purpose of the present utility model.

[0096] In the embodiment provided by the present application, a groove 104 or a hole 105 is provided on the surface of the base 103 facing away from the bottom plate 101. At least a part of the connecting member 200 is disposed in the groove 104 or the hole 105, and the groove 104 or the hole 105 is open toward the side of the box cover 124. When it is necessary to install or disassemble the connecting member 200, the user can directly operate in the inner cavity 100a without disassembling the base 103 to install or disassemble the connecting member 200. Also, since the feeding channel 201a in the connecting member 200 is for the built-in guide pipe to extend into, and the built-in guide pipe is used for conveying wire materials. Specifically, the wire materials wound on the coil are extended into the built-in guide pipe, and the wire materials pass through the feeding channel 201a and the discharging channel 201b in sequence from the built-in guide pipe, and then the wire materials extend into and out of the guide pipe.

[0097] If the wire materials accommodated in the built-in guide pipe are broken, since the groove or the hole accommodating the connecting member is open toward the side of the box cover, only the box cover 124 needs to be opened, and then the connecting member can be operated. The user can very conveniently operate in the inner cavity 100a, pull out the built-in guide pipe in the feeding channel 201a to clean the broken materials in the built-in guide pipe, without disassembling the base 103 and then pulling out the built-in guide pipe.

[0098] A plurality of wire grooves 106 communicating with the groove 104 or the hole 105 are provided on the surface of the base 103 facing away from the bottom plate 101. It can be understood that a groove 104 or a hole 105 is provided on the surface of the base 103 facing the box cover 124. Each wire groove 106 is used for accommodating a built-in guide pipe; for two adjacent wire grooves 106, the distance between the ends close to the connecting member 200 is smaller than the distance between the ends far from the connecting member 200. It should be noted that the wire groove 106 can be a groove formed by the surface of the base 103 facing away from the bottom plate 101 being recessed. The wire groove 106 can also be a hollow or perforated groove. Exemplarily, a protrusion is provided on the surface of the base 103 facing away from the bottom plate 101, and a wire groove 106 penetrating the protrusion can be provided on the protrusion.

[0099] In the embodiment provided by the present application, each wire groove 106 is used for accommodating a built-in guide pipe. If the wire groove 106 is a groove formed by the surface of the base 103 facing away from the bottom plate 101 being recessed, the wire groove 106 can play a role in limiting the built-in guide pipe, and the wire groove 106 can also reduce the space occupied by the wire materials in the inner cavity 100a of the box body 100. Specifically, by accommodating the built-in guide pipe in the way of providing the groove 104 on the base 103, the built-in guide pipe can share the wall thickness of the base 103, so that the height space of the inner cavity 100a of the box body 100 occupied by the wire materials can also be reduced, making the material bin 1000 more compact and miniaturized.

[0100] In some embodiments, the number of the feeding channels 201a is multiple, and the multiple feeding channels 201a are all communicated with the discharging channel 201b. The multiple feeding channels 201a correspond to the multiple wire grooves 106 one by one. Since the multiple feeding channels 201a are communicated with the discharging channel 201b, it can be obtained that the multiple feeding channels 201a converge together through the discharging channel 201b.

[0101] In the embodiments provided in the present application, between two adjacent wire grooves 106, the distance between the ends close to the connecting member 200 is smaller than the distance between the ends far from the connecting member 200. Specifically, the multiple wire grooves 106 gradually approach each other from the end far from the connecting member 200 to the end close to the connecting member 200. The multiple built-in guide pipes corresponding to the multiple wire grooves 106 also gradually approach each other from the end far from the connecting member 200 to the end close to the connecting member 200. Each wire groove 106 is bent, so that the built-in guide pipe is smoother when transmitting the wire material, and the wire material is not easily broken.

[0102] The surface of the base 103 facing away from the bottom plate 101 further has at least one concave area 128, and the concave area 128 is communicated with one of the two outermost wire grooves 106 among the multiple wire grooves 106; compared with the end of the wire groove 106 far from the connecting member 200, the concave area 128 is communicated with the end of the wire groove 106 close to the connecting member 200. Since the operation space of the wire groove is narrow, it may not be convenient for the user's finger operation. By providing the concave area 128, an operation space for the user to easily pull out or install the built-in guide pipe can be provided.

[0103] In some embodiments, the number of the feeding channels 201a corresponds to the number of the feeding release rings 202a one by one, and each feeding release ring 202a extends into the feeding channel 201a. The number of the feeding release rings 202a corresponds to the number of the built-in guide pipes one by one. Each built-in guide pipe passes through the corresponding feeding release ring 202a and extends into the feeding channel 201a. The feeding release ring 202a is used to drive the buckle in the connecting member 200 to lock or release the built-in guide pipe.

[0104] The material bin 1000 further includes a material guiding component 300, and the material guiding component 300 is arranged on the side of the material bin 1000 opposite to the connecting member 200, and the material guiding component 300 has a feeding port 304.

[0105] The feeding channel 201a is communicated with the discharging channel 201b. Each wire groove 106 is located between the material guiding component 300 and the groove 104 or the hole 105. Each built-in guide pipe extends from a feeding port 304 and passes through the wire groove 106 to the feeding channel 201a.

[0106] The guide assembly 300 corresponds to the feed channel 201a. The wire groove 106 is located between the guide assembly 300 and the groove 104, or between the guide assembly 300 and the hole 105. The feed opening 304 of the guide assembly 300 allows the wire to pass through. Because the wire is wound around the tray, when the tray releases the wire, it is bent. The guide assembly 300 pulls the wire, straightening it.

[0107] See Figure 8 、 Figure 9 and Figure 10 The connecting member 200 further includes a driving friction wheel 204 and a driven friction wheel 205 disposed within the discharge channel 201b. A gap is defined between the outer peripheries of the driving friction wheel 204 and the outer peripheries of the driven friction wheel 205, allowing the wire to pass through. A button 212 is provided on the side of the connecting member 200 facing away from the bottom plate 101. The button 212 is located on the side of the connecting member 200 facing the bin lid. The button 212 is used to actuate the driven friction wheel 205 to change the gap between the outer peripheries of the driving friction wheel 204 and the driven friction wheel 205. The button 212 is exposed on the side of the base 103 facing the exterior of the silo 1000.

[0108] It should be noted that the button 212 is exposed relative to the side of the base 103 facing the outside of the silo 1000, which means that the button 212 is arranged on the surface of the connecting piece 200 facing away from the bottom plate 101.

[0109] In some embodiments, pressing button 212 can increase the gap between the outer periphery of the active friction wheel 204 and the outer periphery of the driven friction wheel 205, thereby facilitating the removal of the wire between the driven and active friction wheels 205. Releasing button 212 can decrease the gap between the outer periphery of the active friction wheel 204 and the driven friction wheel 205, thereby increasing the friction between the wire and the driven and active friction wheels 205, 204. When the active friction wheel 204 rotates, the friction force drives the wire to move, thereby transporting the wire to the 3D printer. The driven friction wheel 205 cooperates with the active friction wheel 204 to control the position of the wire, ensuring stable wire transportation to the 3D printer. The active and driven friction wheels 204, 205, constitute a drive wheel assembly, which is located between the internal material guide tube and the extended material guide tube.

[0110] The connecting member 200 also includes a connecting rod structure 208 and a return spring 209. The driven friction wheel 205 is rotatably connected to the connecting rod structure 208. The connecting rod structure 208 is used to drive the driven friction wheel 205 to move closer to or away from the active friction wheel 204. The return spring 209 connects the button 212 and the connecting rod structure 208.

[0111] It should be noted that the driven friction wheel 205 can rotate relative to the connecting rod structure 208. When the connecting rod structure 208 moves, the connecting rod structure 208 can drive the driven friction wheel 205 to move so as to change the gap size between the driven friction wheel 205 and the driving friction wheel 204.

[0112] The connecting member 200 further includes a rotating shaft 210. The connecting rod structure 208 is hinged to the rotating shaft 210. The rotating shaft 210 penetrates through the connecting rod structure 208, and the axial direction of the rotating shaft 210 is the same as the axial direction of the driven friction wheel 205. The rotating shaft 210 is spaced apart from the driven friction wheel 205. Herein, the rotating shaft 210 being spaced apart from the driven friction wheel 205 means that there is a distance between the outer periphery of the rotating shaft 210 and the outer periphery of the driven friction wheel 205, and the position of the rotating shaft 210 is located between the driven friction wheel 205 and the return spring 209. When the button 212 is pressed to compress the return spring 209, the return spring 209 drives the connecting rod structure 208 to rotate relative to the rotating shaft 210, and the connecting rod structure 208 drives the driven friction wheel 205 to move so as to increase the gap between the driven friction wheel 205 and the driving friction wheel 204. If the button 212 is released, the return spring 209 naturally elongates due to the compression elastic force, the connecting rod structure 208 rotates relative to the rotating shaft 210, and the connecting rod structure 208 drives the driven friction wheel 205 to move so as to decrease the gap between the driven friction wheel 205 and the driving friction wheel 204.

[0113] The connecting member 200 further includes a Hall sensor 211. The Hall sensor 211 is arranged on the periphery of the driven friction wheel 205, and the Hall sensor 211 is used to detect the rotation speed of the driven friction wheel 205.

[0114] The silo 1000 further includes a driving member for driving the driving friction wheel to rotate. The driving member can be arranged in the inner cavity 100a, the driving member can be located outside the connecting member 200, and the driving member can be a motor.

[0115] The base 103 has a heating cavity 107 for accommodating the heater 108. The heating cavity 107 is communicated with at least one of the groove 104 or the hole 105 or the wire groove 106 or the recessed area 128; the heating cavity 107 is provided with a heat flow outlet 125 and a blower 127. The heat flow outlet 125 is communicated with at least one of the groove 104 or the hole 105 or the wire groove 106 or the recessed area 128; the blower 127 is used to blow the heat flow in the heating cavity 107 towards the groove 104 or the hole 105.

[0116] Heater 108 heats air to evaporate moisture adsorbed in the strands, thereby dehumidifying the strands. Fan 127 rapidly diffuses the heated air and directs it through heat outlet 125 toward groove 104 or hole 105. The heated air dries the strands. Specifically, the heated air passes through groove 104 or hole 105 and enters discharge channel 201b of connector 200, drying the strands in the tray and preventing them from becoming damp.

[0117] The heat outlet 125 is located in the center of the base 103. The base 103 has a first and second orthogonal direction. The projection of the center of the heat outlet 125 onto the base plate is point O. The line segment passing through point O along the first direction of the base 103 is AB, and the line segment passing through point O along the second direction of the base 103 is CD. OA / AB is between 0.35-0.65, and / or OC / CD is between 0.35-0.65. Because the heat outlet 125 is located in the center of the base 103, the heated air can be more quickly diffused throughout the inner cavity 100a, dehumidifying the strands. The first direction is the X-axis, and the second direction is the Y-axis.

[0118] The base 103 has a drying chamber 129 for storing desiccant. A groove 104 or hole 105 is located between the drying chamber 129 and the heating chamber 107. The desiccant absorbs moisture from the air in the inner chamber 100a, preventing the strands on the tray from becoming damp. The groove 104 or hole 105 is located between the drying chamber 129 and the heating chamber 107. The heat flow from the groove 104 or hole 105 dries the air near the connecting piece 200, making it less susceptible to moisture. The desiccant absorbs moisture from the air around the silo 1000 and the connecting piece 200, preventing the strands from becoming damp.

[0119] In the examples provided in this application, see Figure 11 and Figure 12 The connecting member 200 also includes a flexible release plate 203. This plate connects the multiple feed release rings 202a that extend outward from one side of the feed channel 201a, forming a unified connection. This provides a more stable connection and simplifies operation during production and assembly, reducing the number of operations required. When a feed release ring 202a is pressed to switch between locked and released states, the flexible release plate 203 elastically deforms, allowing pressing one feed release ring 202a to maintain the same state as the other release rings.

[0120] A plurality of feed release rings 202a are arranged in an arc or broken line, so that the axial direction of the feed release ring 202a is set towards the axial direction of the wire groove 106. The flexible release plate 203 arches towards the side away from the feed channel 201a. When pressing the feed release rings 202a of the plurality of feed channels 201a, the flexible release plate 203 will make the feed release rings 202a have a larger operating area, which is beneficial to improving the convenience of operating the feed release rings 202a in a narrow area. It should be noted that the recessed area 128 provided in the base 103 is beneficial to facilitate the user to manually press the flexible release plate 203.

[0121] The distance between every two adjacent feed channels 201a gradually increases from the end connected to the discharge channel 201b to the end away from the discharge channel 201b. When pressing the release ring of the feed channel 201a, the flexible release plate 203 will have a larger deformation area, preventing the state of other feed release rings 202a from being affected when pressing one feed release ring 202a.

[0122] Each feed release ring 202a passes through the flexible release plate 203 along the thickness direction of the flexible release plate 203, and the thickness of the flexible release plate 203 is less than the dimension of the feed release ring 202a along the thickness direction of the flexible release plate 203. The flexible release plate 203 is a plastic component, and the thickness of the flexible release plate 203 is 0.5 mm - 2 mm. The flexible release plate 203 can be a plastic component. If the thickness of the flexible release plate 203 is too small (such as less than 0.5 mm), it may cause too large a wall thickness difference and be difficult to manufacture (for example, when manufacturing by injection molding, the wall thickness is required to meet certain conditions and the difference cannot be too large). If the thickness of the flexible release plate 203 is too large (such as greater than 2 mm), it is easy to affect the state of other feed release rings 202a when pressing any one feed release ring 202a.

[0123] The wire material in the 3D printing system is transported to the 3D printer through the feed port for printing. The wire material is in a tensioned state when passing through the feed port. During the transportation process, the wire material will continuously wear against the feed port. After wear, the feed port will generate a large transportation resistance, causing damage to the wire material.

[0124] Please refer to Figures 13 to 20, in the embodiments provided in the present application, the material guiding assembly 300 includes a material guiding member 301, a reinforcing member 302, a driving feeding wheel 319 and a driven feeding wheel 320. The material guiding member 301 is installed on the base 103, the reinforcing member 302 is installed on the material guiding member 301, a feeding channel 303 is formed between the material guiding member 301 and the reinforcing member 302, and the feeding channel 303 includes a feeding port 304 and a discharging port 305. Both the driving feeding wheel 319 and the driven feeding wheel 320 are connected to the material guiding member 301, the driving feeding wheel 319 and the driven feeding wheel 320 are arranged at intervals, and the driving feeding wheel 319 and the driven feeding wheel 320 are used to push the wire material from one side of the feeding port 304 to one side of the discharging port 305 to extrude the feeding channel 303.

[0125] Among them, the material guiding member 301 refers to the material guiding part between the wire material and the driving feeding wheel 319, and can be a single part or a combination of multiple parts. The hardness of the reinforcing member 302 is greater than that of the material guiding member 301. In this way, the wear resistance of the reinforcing member 302 is better than that of the material guiding member 301, which can effectively improve the reliability of the material guiding assembly 300 and reduce the wear degree of the wire material.

[0126] At least a part of the cross-section of the feeding channel 303 perpendicular to the axial direction of the feeding channel 303 is circular, and the overall feeding channel 303 is in a flared shape.

[0127] In some embodiments, the reinforcing member 302 is a hole column structure. Along the axial direction of the feeding channel 303, the size of the reinforcing member 302 is greater than or equal to 2.40 mm and less than or equal to 3.60 mm. The size of the reinforcing member 302 is denoted as L1. As Figure 14 shown, for example, the value of the size L1 of the reinforcing member 302 can be 2.40 mm, 2.58 mm, 2.70 mm, 2.82 mm, 3.00 mm, 3.40 mm or 3.60 mm, and will not be listed one by one.

[0128] In one embodiment, the reinforcing member 302 and the material guiding member 301 are stacked along the axial direction of the feeding channel 303, and the reinforcing member 302 is farther away from the feeding port 304 than the material guiding member 301. That is, the opening on the side of the material guiding member 301 away from the reinforcing member 302 forms the feeding port 304, and the opening on the side of the reinforcing member 302 away from the material guiding member 301 forms the discharging port 305. In another embodiment, the reinforcing member 302 is embedded in the material guiding member 301.

[0129] The feeding channel 303 includes a flared hole section 317a and a material guiding channel section 317b. Among them, the flared hole section 317a is arranged near the feeding port 304, and the material guiding channel section 317b is arranged near the active feeding wheel 319. Exemplarily, the material guiding member 301 forms the flared hole section 317a and the material guiding channel section 317b. The flared hole section 317a and the material guiding channel section 317b are combined to form the whole material guiding member 301. In some embodiments, the flared hole section 317a and the material guiding channel section 317b are of an integrally formed structure. In some embodiments, the flared hole section 317a and the material guiding channel section 317b are of a split structure, and the flared hole section 317a and the material guiding channel section 317b are connected and fixed to form the material guiding member 301.

[0130] As Figure 15 shown, the reinforcing member 302 covers part of the flared hole section 317a and part of the material guiding channel section 317b. Alternatively, the reinforcing member 302 covers a partial section of the flared hole section 317a close to the material guiding channel section 317b. For example, as Figure 16 shown, the reinforcing member 302 is integrally arranged in the flared hole section 317a. Along the axial direction of the feeding channel 303, the end of the flared hole section 317a on the side far from the feeding port 304 is denoted as the first end, then the distance from the reinforcing member 302 to the first end is less than or equal to the distance from the reinforcing member 302 to the feeding port 304. The partial section of the flared hole section 317a close to the active feeding wheel 319 is most worn by the wire material. Especially in the high-speed printing scenario, the flared hole section 317a is easily worn, thus greatly reducing the service life of the material guiding member 301, and a large conveying resistance is generated after this partial section is damaged. The reinforcing member 302 covers at least the partial section of the flared hole section 317a close to the active feeding wheel 319. The reinforcing member 302 with better wear resistance than the material guiding member 301 is not easily damaged, improving the reliability of the material guiding assembly 300.

[0131] Furthermore, an installation groove 306 is formed on the inner wall surface of the material guiding member 301. The installation groove 306 is used for installing the reinforcing member 302, and the installation groove 306 positions the installation of the reinforcing member 302.

[0132] Along the axial direction of the feeding channel 303, the inner wall surface of the flared hole section 317a gradually tapers from the feeding port 304 to the direction of the active feeding wheel 319. The reinforcing member 302 covers at least one end of the inner wall surface of the flared hole section 317a close to the material guiding channel section 317b. In this way, the reinforcing member 302 is arranged at the position where the flared hole section 317a is most severely worn by the wire material, improving the reliability of the material guiding assembly 300 and reducing the wear degree of the wire material.

[0133] As Figure 17As shown, the reinforcing member 302 is in the shape of a hollow column. Along the radial direction of the reinforcing member 302, the installation groove 306 has at least three groove wall surfaces. The installation groove 306 has a communication port 321 that communicates with the outside of the material guiding member 301. The communication port 321 is used for inserting the reinforcing member 302 into the installation groove 306. At least the outer peripheral surface of the reinforcing member 302 is in close fit with two relatively arranged groove wall surfaces.

[0134] The reinforcing member 302 is installed into the installation groove 306 from the communication port 321. After long-term use, the reinforcing member 302 can be conveniently replaced, ensuring the reliability of the material guiding assembly 300 and reducing the wear degree on the wire material.

[0135] Further, a notch 322 is formed on the groove wall surface. The outer peripheral surface of the reinforcing member 302 is in close fit with the groove wall surface where the notch 322 is located and the groove wall surface opposite to the notch 322. Among them, the notch 322 communicates with the installation groove 306. The axial direction of the notch 322 is staggered with the axial direction of the communication port 321. The notch 322 at least accommodates a part of the outer peripheral surface of the reinforcing member 302. After the reinforcing member 302 is inserted into the installation groove 306 from the communication port 321, a part of the outer peripheral surface of the reinforcing member 302 is stuck in the notch 322, thereby being fixed in the installation groove 306.

[0136] On the groove wall surface where the notch 322 is located, and / or, a convex block 323 is also formed on the groove wall surface opposite to the notch 322. Along the insertion direction of the reinforcing member 302, the convex block 323 covers a part of the groove wall surface between the notch 322 and the communication port 321. That is, along the insertion direction of the reinforcing member 302, the convex block 323 is located between the communication port 321 and the notch 322. The convex block 323 is used to provide an indication for the reinforcing member 302 when the reinforcing member 302 is installed, so that the reinforcing member 302 experiences a process of first tightening and then loosening during the assembly process, thereby indicating that the assembly is in place. In addition, the convex block 323 can also limit and fix the reinforcing member 302 after it extends into the notch 322, reducing the possibility of the reinforcing member 302 sliding out of the installation groove 306.

[0137] For example, a convex block 323 is formed on the groove wall surface where the notch 322 is located. Also for example, a convex block 323 is formed on the groove wall surface opposite to the notch 322. Still for example, convex blocks 323 are formed on both the groove wall surface where the notch 322 is located and the groove wall surface opposite to the notch 322. In this way, the convex blocks 323 on both sides can further strengthen the limitation of the reinforcing member and reduce the possibility of the reinforcing member 302 sliding out of the installation groove 306.

[0138] At least part of the inner wall surface of the reinforcing member 302 forms a cylindrical hole 316, or the inner wall surface of the reinforcing member 302 has a minimum diameter position. Along the axial direction of the feeding channel 303, the distance between the center of the active feeding wheel 319 and the edge of the cylindrical hole 316 on the side away from the feeding port 304 is greater than or equal to 7.0 mm and less than or equal to 11.02 mm. For example, the value of this distance can be 7.0 mm, 7.34 mm, 7.80 mm, 8.25 mm, 8.67 mm, 9.18 mm, 9.50 mm, 10.26 mm, 10.64 mm, 10.85 mm or 11.02 mm. Or, along the axial direction of the feeding channel 303, the distance between the center of the active feeding wheel 319 and the minimum diameter position of the inner wall surface of the reinforcing member 302 is greater than or equal to 7.0 mm and less than or equal to 15 mm. For example, the value of this distance can be 7.0 mm, 8.25 mm, 9.18 mm, 10.26 mm, 11.02 mm, 13.3 mm, 14.5 mm or 15.0 mm.

[0139] In one embodiment, the inner wall surface of the reinforcing member 302 has a minimum diameter position, which can be a circular arc transition or a cylindrical hole 316 transition. For example, when the minimum position is a circular arc transition, a curved surface is provided on the inner wall surface of the reinforcing member 302 to connect the top surface and the bottom surface of the reinforcing member 302, and a minimum diameter is formed at the curved surface transition. By designing the diameter at the minimum diameter position on the inner wall surface of the reinforcing member 302 appropriately, the positioning of the wire is made more accurate, and it is centered as much as possible, thereby reducing the conveying resistance of the wire and making the wire as straight as possible during conveying, which is beneficial for accurately measuring the conveying resistance during the closed-loop control of the active feeding wheel 319 and making the conveying speed control more accurate. In addition, the wire can be made to avoid contacting the guiding member 301 as much as possible, reducing the wear of the wire on the guiding member 301 and improving the conveying accuracy.

[0140] When there is a circular arc transition at the minimum diameter position, the minimum diameter position of the inner wall surface of the reinforcing member 302 can be the middle position along the axial direction of the feeding channel 303 of the circular arc transition position, or the edge of the minimum diameter position on the side away from the feeding port 304, or the edge of the minimum diameter position close to the feeding port 304.

[0141] Control the distance between the center of the active feeding wheel 319 and the minimum diameter position of the inner wall surface of the reinforcing member 302 to be [7.0 mm, 15.0 mm], to avoid the situation that the wire cannot be straightened and positioned due to too close a distance, and at the same time, when the hardness of the wire is insufficient, reduce the deformation of the wire between the two contact points caused by too far a distance.

[0142] In another embodiment, at least part of the inner wall surface of the reinforcing member 302 forms a cylindrical hole 316, and the cylindrical hole 316 extends along the axial direction of the feeding channel 303.

[0143] In this application, the position of the cylindrical hole 316 is the position where the inner wall surface of the reinforcing member 302 has the smallest diameter. The distance between the center of the active feeding wheel 319 and the edge of the cylindrical hole 316 on the side away from the feeding port 304 is denoted as L2, as Figure 18 shown. The distance between the center of the active feeding wheel 319 and the edge of the cylindrical hole 316 on the side away from the feeding port 304 is controlled to be [7.0 mm, 11.02 mm], so as to avoid the positioning wire material not being straightened due to too close a distance, and at the same time avoid the wire material between the two contact points being deformed due to too far a distance when the hardness of the wire material is insufficient. By designing the diameter of the appropriate cylindrical hole 316, the positioning of the wire material is made more accurate, and it is arranged as centrally as possible, thereby reducing the conveying resistance of the wire material and making the wire material as straight as possible for conveying, which is beneficial to accurately measuring the conveying resistance during the closed-loop control of the active feeding wheel 319 and making the conveying speed control more accurate. In addition, the wire material can also be made to avoid contact with the guiding member 301 as much as possible, reduce the wear of the wire material on the guiding member 301 and improve the accuracy of conveying.

[0144] The inner wall surface of the reinforcing member 302 forms a flared hole as a whole from the feeding port 304 to the direction of the active feeding wheel 319. The inner wall surface of the reinforcing member 302 is connected to the inner wall surface of the flared hole section 317a, and at least a part of the inner wall surface of the reinforcing member 302 forms a cylindrical hole 316.

[0145] In one embodiment, the ratio of the diameter of the cylindrical hole 316 to the diameter of the guiding channel section 317b on the guiding member 301 is greater than or equal to 0.95 and less than or equal to 1.05. That is, the diameter of the cylindrical hole 316 can be smaller than the diameter of the guiding channel section 317b, or can be greater than or equal to the diameter of the guiding channel section 317b. It should be noted that the diameter of the guiding channel section 317b on the guiding member 301 is the diameter at the entrance of the guiding channel section 317b close to the flared hole section 317a, or can also be the average diameter of the guiding channel section 317b between the entrance and the active feeding wheel 319.

[0146] In another embodiment, the ratio of the diameter of the cylindrical hole 316 to the diameter of the material guiding channel section 317b on the material guiding member 301 is greater than or equal to 0.90 and less than 1.0, that is, the diameter of the cylindrical hole 316 is smaller than the diameter of the material guiding channel section 317b. Among them, the inner wall surface surrounding the cylindrical hole 316 can more accurately define the wire material at this position. At the same time, the active feeding wheel 319 and the driven feeding wheel 320 clamp the wire material, so that the position of the wire material between the cylindrical hole 316 and the active feeding wheel 319 can be better positioned, making the wire material as centered as possible, so that the wire material between the cylindrical hole 316 and the active feeding wheel 319 is in a straightened state. In this way, the adverse effects brought by the curved state of the wire material when it is released from the wire reel can be overcome, so that the wire material is conveyed as straightened as possible, which is beneficial to improving the meshing accuracy of the active feeding wheel 319 and the driven feeding wheel 320, and thus facilitating the accurate measurement of the conveying resistance and the conveying distance during closed-loop control, making the conveying control of the wire material more accurate.

[0147] Exemplarily, the diameter of the cylindrical hole 316 is 0.2 mm - 0.6 mm larger than the diameter of the wire material. For example, the diameter of the cylindrical hole 316 is 0.3 mm larger than the diameter of the wire material, or the diameter of the cylindrical hole 316 is 0.5 mm larger than the diameter of the wire material, or the diameter of the cylindrical hole 316 is 0.6 mm larger than the diameter of the wire material. By setting a smaller gap between the diameter of the cylindrical hole 316 and the wire material, the position of the wire material can be more accurately limited, thereby improving the positioning accuracy of the wire material, which is beneficial to improving the meshing control accuracy of the active feeding wheel 319 and the driven feeding wheel 320. In one embodiment, when the diameter of the wire material is 1.75 mm, the diameter of the cylindrical hole 316 is between 1.95 mm - 2.35 mm.

[0148] The diameter of the material guiding channel section 317b is 0.1 mm - 0.5 mm larger than the diameter of the cylindrical hole 316. For example, the diameter of the material guiding channel section 317b is 0.1 mm larger than the diameter of the cylindrical hole 316, or the diameter of the material guiding channel section 317b is 0.35 mm larger than the diameter of the cylindrical hole 316, or the diameter of the material guiding channel section 317b is 0.5 mm larger than the diameter of the cylindrical hole 316.

[0149] In one embodiment, along the radial direction of the feeding channel 303, the diameter of the cylindrical hole 316 is greater than or equal to 1.9 mm and less than or equal to 2.6 mm. It can be understood that the diameter of the cylindrical hole 316 is the aperture size of the cylindrical hole 316. The diameter of the cylindrical hole 316 is denoted as D1, as Figure 19As shown, for example, the diameter D1 of the cylindrical hole 316 can be 1.9 mm, 1.95 mm, 2.01 mm, 2.16 mm, 2.25 mm, 2.42 mm, or 2.6 mm, and not listed one by one here. Specifically, the diameter of the cylindrical hole 316 can be determined according to the diameter of the wire material. Generally, the diameter of the wire material is about 1.75 mm. Therefore, the cylindrical hole 316 cannot be too small, otherwise it is easy to over-extrude the wire material, resulting in wire breakage or increased wear of the reinforcement 302. If the diameter of the cylindrical hole 316 is greater than 2.6 mm, the channel formed by the cylindrical hole 316 is too large, and the wire material cannot be straightened, and deformation is likely to occur. By setting the diameter of the cylindrical hole 316 to be slightly larger than the diameter of the wire material, the position of the wire material can be accurately positioned and the wire material can be prevented from being extruded. In this application, by reasonably determining the diameter of the cylindrical hole 316, the phenomenon of wire breakage or deformation of the wire material can be effectively reduced or avoided.

[0150] Axially along the inner wall surface of the reinforcement 302, the length of the cylindrical hole 316 is greater than or equal to 0.2 mm and less than or equal to 1.6 mm. The length of the cylindrical hole 316 is denoted as L3, as Figure 19 shown. For example, the value of the length L3 of the cylindrical hole 316 can be 0.2 mm, 0.5 mm, 0.92 mm, 1.26 mm, 1.35 mm, or 1.6 mm, and not listed one by one. By setting the cylindrical hole 316 to have a certain length, the cylindrical hole 316 can have a better wire material positioning effect. Since the frictional force between the cylindrical hole 316 section and the wire material is relatively large, the cylindrical hole 316 should not be too long. By controlling the length of the cylindrical hole 316, the material and volume of the reinforcement 302 can also be saved.

[0151] The inner wall surface of the reinforcement 302 includes a main arc surface 315, and the main arc surface 315 is connected to the inner wall surface of the trumpet-shaped hole section 317a. Along the axial direction of the feeding channel 303 away from the feeding port 304, the diameter of the main arc surface 315 gradually decreases until it is equal to the diameter of the cylindrical hole 316.

[0152] The edge of the main arc surface 315 on the side away from the feeding port 304 is directly connected to the cylindrical hole 316. The main arc surface 315 can be a smooth curved surface. When the wire material passes through the main arc surface 315, the frictional force between the main arc surface 315 and the wire material can be reduced, thereby reducing the wear degree of the wire material. Exemplarily, the guiding member 301 is a plastic component, and the reinforcement 302 is a ceramic component. Ceramics have a very high hardness and a relatively low friction coefficient, which are very suitable for wire material output. The reinforcement 302 and the guiding member 301 can be connected by insert injection molding. In some embodiments, the formed reinforcement 302 can be placed in an injection mold, and then the plastic material of the guiding member 301 is poured into the injection mold to connect the reinforcement 302 and the guiding member 301 into one body.

[0153] The material guiding member 301 is formed with a first step 307 and / or a second step 308. For example, the material guiding member 301 is formed with a first step 307 and a second step 308, and the second step 308 is farther from the feed inlet 304 than the first step 307. An installation groove 306 is formed between the first step 307 and the second step 308.

[0154] Specifically, the first step 307 includes a connected first circumferential surface 309 and a first plane 310. The first circumferential surface 309 extends along the axial direction of the feeding channel 303 and encloses at least part of the feeding channel 303. The first plane 310 is perpendicular to the axial direction of the feeding channel 303, and the first plane 310 fits with the top surface of the reinforcing member 302, so that the reinforcing member 302 is press-fitted in the material guiding member 301, and it is not easy for the reinforcing member 302 to shake after installation. The top surface of the reinforcing member 302 is the surface of the reinforcing member 302 facing the feed inlet 304 in the axial direction of the feeding channel 303. By setting the first step 307, the minimum wall thickness requirement of the material guiding member 301 is met, avoiding that the wall thickness of the material guiding member 301 is too small to be manufactured, resulting in insufficient structural strength of the material guiding member 301, or avoiding that the wall thickness of the material guiding member 301 is too large to affect the feeding or retracting of the wire material.

[0155] Along the axial direction of the feeding channel 303, the distance from the top surface of the material guiding member 301 to the first plane 310 is greater than or equal to 2.70 mm and less than or equal to 4.00 mm. The top surface of the material guiding member 301 is the surface of the material guiding member 301 farthest from the discharge port 305; the distance from the top surface of the material guiding member 301 to the first plane 310 is denoted as L4, as Figure 14 shown. For example, the value of the distance L4 can be 2.70 mm, 3.00 mm, 3.24 mm, 3.40 mm, 3.67 mm, 3.92 mm or 4.00 mm.

[0156] The second step 308 includes a connected second circumferential surface 311 and a second plane 312. The second circumferential surface 311 extends along the axial direction of the feeding channel 303 and encloses at least part of the feeding channel 303. The second plane 312 is perpendicular to the axial direction of the feeding channel 303, and the second plane 312 fits with the bottom surface of the reinforcing member 302. The bottom surface of the reinforcing member 302 is the surface of the reinforcing member 302 facing the discharge port 305 in the axial direction of the feeding channel 303. The top surface and the bottom surface of the reinforcing member 302 are in interference fit with the material guiding member 301. Specifically, the top surface and the bottom surface of the reinforcing member 302 are respectively fitted with the first plane 310 and the second plane 312, so that the reinforcing member 302 is press-fitted in the material guiding member 301, and it is not easy for the reinforcing member 302 to shake after installation.

[0157] In the axial direction of the feeding channel 303, the second plane 312 is disposed opposite to the first plane 310, and an installation groove 306 is formed between the second plane 312 and the first plane 310. The second circumferential surface 311 extends axially along the feeding channel 303 to the discharge port 305.

[0158] In the radial direction of the feeding channel 303, the diameter of the first circumferential surface 309 is greater than the diameter of the second circumferential surface 311. Exemplarily, in the radial direction of the feeding channel 303, the diameter of the first circumferential surface 309 is greater than or equal to 4.88 mm and less than or equal to 7.32 mm. The diameter of the first circumferential surface 309 is denoted as D2. As Figure 19 shown, for example, the diameter D2 of the first circumferential surface 309 can be 4.88 mm, 5.00 mm, 5.23 mm, 5.58 mm, 5.88 mm, 6.10 mm, 6.54 mm, 7.00 mm or 7.32 mm, and will not be listed one by one.

[0159] Exemplarily, in the radial direction of the feeding channel 303, the diameter of the second circumferential surface 311 is greater than or equal to 2.0 mm and less than or equal to 3.0 mm. The diameter of the second circumferential surface 311 is denoted as D3. For example, the diameter D3 of the second circumferential surface 311 can be 2.00 mm, 2.26 mm, 2.34 mm, 2.48 mm, 2.64 mm, 2.74 mm or 3.0 mm, and will not be listed one by one.

[0160] Exemplarily, the inner wall surface of the guiding member 301 further includes a third circumferential surface 318. The third circumferential surface 318 extends axially along the feeding channel 303 and is connected between the first plane 310 and the second plane 312. The third circumferential surface 318 is the inner wall surface of the installation groove 306, and at least a part of the third circumferential surface 318 abuts against the outer wall surface of the reinforcing member 302. It can be understood that the third circumferential surface 318 is a circumferential surface formed by connecting a plurality of groove wall surfaces of the installation groove 306. The top surface and the bottom surface of the reinforcing member 302 are in interference fit with the guiding member 301, and the reinforcing member 302 is not likely to shake after installation.

[0161] The inner wall surface of the reinforcing member 302 includes an upper arc surface 313 and a lower arc surface 314. In the axial direction of the feeding channel 303, the upper arc surface 313, the main body arc surface 315, the circumferential surface enclosing the cylindrical hole 316 and the lower arc surface 314 are connected in sequence. The upper arc surface 313 is connected to the top surface of the reinforcing member 302 at the edge close to the feeding port 304 in the axial direction of the feeding channel 303. The lower arc surface 314 is connected to the bottom surface of the reinforcing member 302 at the edge far from the feeding port 304 in the axial direction of the feeding channel 303.

[0162] Exemplarily, the diameter of the upper arc surface 313 at the edge away from the feed inlet 304 in the axial direction of the feed channel 303 is smaller than the diameter of the first circumferential surface 309. And / or, the diameter of the lower arc surface 314 at the edge close to the feed inlet 304 in the axial direction of the feed channel 303 is smaller than the diameter of the second circumferential surface 311. Preferably, the diameter of the upper arc surface 313 at the edge away from the feed inlet 304 in the axial direction of the feed channel 303 is smaller than the diameter of the first circumferential surface 309, and the diameter of the lower arc surface 314 at the edge close to the feed inlet 304 in the axial direction of the feed channel 303 is smaller than the diameter of the second circumferential surface 311.

[0163] The connection between the upper arc surface 313 and the top surface of the reinforcing member 302 is recessed relative to the connection between the first circumferential surface 309 and the first plane 310. In this way, at the connection between the reinforcing member 302 and the first step 307, it is ensured that the wire material mainly contacts the arc surface of the reinforcing member 302 with higher hardness rather than the first circumferential surface 309 with lower hardness, so as to reduce the wear on the feed inlet 304.

[0164] Along the radial direction of the feed channel 303, the diameter of the lower arc surface 314 at the edge close to the feed inlet 304 in the axial direction of the feed channel 303 is smaller than the inner diameter of the second circumferential surface 311. That is, the connection between the lower arc surface 314 and the bottom surface of the reinforcing member 302 is recessed relative to the connection between the second circumferential surface 311 and the second plane 312. In this way, the wire material will not scrape against the connection between the second plane 312 and the second circumferential surface 311, ensuring that the wire material mainly contacts the arc surface of the reinforcing member 302 and reducing the wear on the wire material. In addition, it can effectively reduce or avoid the excessive deflection of the wire material caused by the extrusion force of the active feed wheel 319 and the excessive wear on the reinforcing member 302.

[0165] Along the axial direction of the feed channel 303 away from the feed inlet 304, the diameter of the upper arc surface 313 gradually decreases until it is equal to the diameter of the main body arc surface 315 at the edge close to the feed inlet 304 in the axial direction of the feed channel 303. With such a setting, it is ensured that the wire material contacts the arc surface of the reinforcing member 302 rather than the guide member 301, reducing the wear of the wire material on the guide member 301.

[0166] Along the axial direction of the feed channel 303 close to the feed inlet 304, the diameter of the lower arc surface 314 gradually decreases until it is equal to the diameter of the cylindrical hole 316.

[0167] In summary, the inner wall surface enclosing the cylindrical hole 316 is the part with the smallest diameter among the inner wall surfaces of the reinforcing member 302, and the inner wall surface enclosing the cylindrical hole 316 extends along the axial direction of the feeding channel 303. The inner wall surface enclosing the cylindrical hole 316 can make the positioning of the wire material more accurate, make it as centered as possible, thereby reducing the conveying resistance of the wire material and making the wire material as straight as possible during conveying, which can balance the accurate positioning of the wire material and avoid the wire material being squeezed. At the same time, by setting the inner wall surface enclosing the cylindrical hole 316 as the part with the smallest diameter of the inner wall surface of the reinforcing member 302, by reasonably determining the diameter of the cylindrical hole 316, the phenomenon of wire breakage or deformation of the wire material can be effectively reduced or avoided.

[0168] The driving feeding wheel 319 and the driven feeding wheel 320 are located on the side of the reinforcing member 302 facing the discharge port 305, that is, both the driving feeding wheel 319 and the driven feeding wheel 320 are relatively far from the feeding port 304 with respect to the reinforcing member 302. The driving feeding wheel 319 and the driven feeding wheel 320 are located on opposite sides of the wire material, so that the wire material is clamped and conveyed or retracted by the driving feeding wheel 319 and the driven feeding wheel 320.

[0169] Specifically, at least part of the driving feeding wheel 319 and at least part of the driven feeding wheel 320 protrude from the second circumferential surface 311 and are located in the feeding channel 303. The wire material located at the second circumferential surface 311 is clamped by the driving feeding wheel 319 and the driven feeding wheel 320, and the wire material located at the reinforcing member 302 is clamped by the reinforcing member 302. In this way, the wire material between the driving feeding wheel 319 and the reinforcing member 302 is in a straight state.

[0170] Exemplarily, along the radial direction of the feeding channel 303, the distance between the center of the driving feeding wheel 319 and the center of the driven feeding wheel 320 is greater than or equal to 8.10 mm and less than or equal to 12.20 mm. The distance between the center of the driving feeding wheel 319 and the center of the driven feeding wheel 320 can be denoted as L5, as Figure 18 shown. For example, the distance L5 between the center of the driving feeding wheel 319 and the center of the driven feeding wheel 320 is 8.14 mm, 8.65 mm, 9.38 mm, 10.18 mm, 10.50 mm, 11.65 mm or 12.20 mm.

[0171] Exemplarily, along the radial direction of the feeding channel 303, the distance between the center of the driven feeding wheel 320 and the central axis of the feeding channel 303 is greater than or equal to 6.0 mm and less than or equal to 6.3 mm. The distance between the center of the driven feeding wheel 320 and the central axis of the feeding channel 303 is denoted as L6, as Figure 15As shown, for example, the distance L6 from the center of the driven feeding wheel 320 to the central axis of the feeding channel 303 is 6.07 mm, 6.14 mm, 6.19 mm, 6.24 mm, 6.27 mm or 6.30 mm.

[0172] The guiding component 300 further has a transparent outer cover 324. The guiding component 300 is arranged inside the outer cover 324. An indicating member 325 is also arranged inside the outer cover 324. The indicating member 325 is arranged opposite to the material tray. The indicating member 325 and the material tray are arranged on the opposite sides in the radial direction of the feeding port 304. The indicating member 325 has a lamp bead and an annular or planar light guiding portion 326. The main light emitting surface of the light guiding portion 326 faces the axial direction of the feeding port 304.

[0173] Among them, the feeding port 304 of the guiding member 301 is located outside the outer cover 324, so that the wire material can extend from the feeding port 304 into the feeding channel 303. It should be noted that the number of material trays is multiple, and each material tray corresponds to a guiding member 301, so each material tray corresponds to an indicating member 325. Among them, in the relatively arranged material tray and the indicating member 325, the indicating member 325 indicates the state information such as the insertion and transportation failure of the wire material through the light emitted by the light guiding portion 326. And the indicating member 325 and the material tray are located on the opposite sides of the feeding port 304, and it is not easy to block the indicating member 325 when operating the wire material.

[0174] Exemplarily, the guiding component 300 has a mounting portion 327. The mounting portion 327 has a mounting plane 328. The mounting plane 328 faces the side of the feeding port 304. The guiding member 301 and the indicating member 325 are mounted on the mounting plane 328. Among them, the mounting plane 328 is arranged parallel to the surface of the bottom plate 101 facing the guiding member 301. The guiding member 301 is inclinedly arranged on the mounting plane 328. Specifically, the plane perpendicular to the axial direction of the feeding channel 303 on the guiding member 301 intersects with the mounting plane 328.

[0175] The projection distance of the connection line between the center of the light guiding portion 326 and the center of the feeding port 304 on the mounting plane 328 is greater than or equal to 20 mm and less than or equal to 60 mm. That is, the line length of the orthographic projection of the connection line between the center of the light guiding portion 326 and the center of the feeding port 304 on the bottom plate 101 is greater than or equal to 20 mm and less than or equal to 60 mm. In this way, it is avoided that the distance between the center of the light guiding portion 326 and the center of the feeding port 304 is too small, and the state information such as the insertion of the wire material into the feeding port 304 or the transportation failure at the feeding port 304 is not easily blocked due to operation. At the same time, on the premise of ensuring that the state information is not blocked, it is avoided that the distance between the center of the light guiding portion 326 and the center of the feeding port is too large, resulting in too much space occupied by the guiding component 300.

[0176] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0177] In addition, in this application, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0178] In this application, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0179] In addition, the technical solutions between various embodiments of this application can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by this application.

[0180] The above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of changes or substitutions, which should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A silo, characterized in that, Comprising: A box body having an inner cavity; A connecting member disposed in the inner cavity. The connecting member has a discharge channel and at least one feed channel. The discharge channel is in communication with the feed channel. The connecting member further includes a discharge release ring. One end of the discharge release ring extends into the discharge channel, and the other end of the discharge release ring extends out of the discharge channel. The discharge release ring is used to lock or release an extending guide pipe that extends from the discharge release ring to outside the box body; A guiding member that penetrates from outside the box body to the inner cavity. The guiding member is movably connected to the box body to press against the discharge release ring.

2. The silo according to claim 1, characterized in that, The guiding member includes a connected guiding portion and a sealing portion. The guiding portion allows the extending guide pipe to pass through from the inner cavity to outside the box body. The guiding portion is used to movably abut against the discharge release ring, and the sealing portion is connected to the box body.

3. The silo according to claim 2, characterized in that, At least a part of the sealing portion extends into the guiding portion. The sealing portion is used to allow the extending guide pipe to pass through and is tightly connected to the extending guide pipe. The guiding portion is fixedly connected to the sealing portion.

4. The silo according to claim 2, wherein, The sealing portion includes a sealing pipe and a sealing ring. The sealing pipe extends into the guiding portion and allows the extending guide pipe to pass through. The outer surface of the sealing pipe is in close contact with the guiding portion, and the inner surface of the sealing pipe is in close contact with the extending guide pipe. The sealing ring extends out of the guiding portion and is sealingly connected to the box body.

5. The silo according to claim 4, characterized in that, The inner surface of the sealing pipe is radially inwardly convex with first sealing teeth that are in close contact with the outer surface of the extending guide pipe.

6. The silo according to claim 4, wherein, The box body has a through hole for the sealing ring to extend into the inner cavity; On one side of the box body facing the inner cavity, there is a hollow boss that surrounds the through hole. The boss is in snap connection or close contact with the sealing ring.

7. The silo according to claim 6, characterized in that, Along the axial direction of the through hole, the area between the connection of the sealing ring and the boss and the connection of the sealing ring and the guiding portion is bent to provide a deformation space required for the movement of the guiding portion.

8. The silo according to claim 6, characterized in that, Along the radial direction of the sealing ring, on the side of the contact surface of the sealing ring with the boss, there are second sealing teeth that are in close contact with the contact surface of the boss when moving along the axial direction of the through hole.

9. The silo according to claim 6, wherein, The boss has a first limiting edge that extends radially inward along the boss; The sealing ring has a first card slot, and the first limiting edge extends into the first card slot.

10. The silo according to claim 9, characterized in that, The guiding portion is provided with a second limiting edge, and the sealing ring has a second card slot spaced from the first card slot. The second limiting edge extends into the second card slot.

11. The silo according to claim 4, characterized in that, The guiding member further includes an elastic member. A limiting flange is convexly provided on the outer periphery of the guiding portion, and the limiting flange is connected to the sealing ring; On the outer surface of the box body, there is a sunk groove. The elastic member is connected between the bottom wall of the sunk groove and the limiting flange. The sealing ring is in movable close contact with the side wall of the sunk groove.

12. The silo according to any one of claims 4-10, characterized in that, The sealing ring is a flexible elastic body.

13. The silo according to claim 2, characterized in that, The box body includes a bottom plate and side plates. The side plates surround the bottom plate and are connected to the bottom plate. The guiding portion penetrates through the side plates and has an angle of 15° - 50° with the bottom plate.

14. The silo according to claim 13, characterized in that, The silo also includes a base for accommodating the connecting piece, and the connecting piece also includes an active friction wheel and a driven friction wheel arranged in the discharge channel, and the outer periphery of the active friction wheel and the outer periphery of the driven friction wheel have a gap for the wire material to extend into, and the connecting piece is provided with a button on the side away from the bottom plate, and the button is used to drive the driven friction wheel to change the size of the gap between the outer periphery of the active friction wheel and the outer periphery of the driven friction wheel. The button is exposed relative to the side of the base facing the outside of the silo.

15. The silo according to claim 14, wherein The connecting member also includes a connecting rod structure and a reset spring. The driven friction wheel is rotatably connected to the connecting rod structure. The connecting rod structure is used to drive the driven friction wheel to move closer to or away from the active friction wheel. The reset spring connects the button and the connecting rod structure.

16. The silo according to claim 1, wherein, The connecting piece also includes a feed release ring, which extends into the feed channel and allows the built-in material guide tube to pass through the feed release ring. The feed release ring is used to drive the latch in the connecting piece to lock or release the built-in material guide tube.

17. A 3D printing feeding device, characterized in that, The 3D printing feeding device is used in a 3D printing system. The 3D printing feeding device includes a material tray and a material bin according to any one of claims 1 to 16. The material tray is installed in the material bin and is used to carry wire material.

18. A 3D printing system, characterized in that, It comprises a 3D printer and a 3D printing feeding device as claimed in claim 17, wherein the 3D printing feeding device provides wire material for the 3D printer.

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