CN219276688U

CN219276688U - Wire rod conveying buffer device and three-dimensional forming equipment

Info

Publication number: CN219276688U
Application number: CN202223095960.XU
Authority: CN
Inventors: 王敬杰
Original assignee: Shenzhen Anycubic Technology Co Ltd
Current assignee: Shenzhen Anycubic Technology Co Ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-06-30
Anticipated expiration: 2032-11-18

Abstract

The utility model provides a wire conveying buffer device and three-dimensional forming equipment. The three-dimensional forming equipment includes two at least wire rod conveyor, and wire rod transport buffer includes: the base is provided with a passing cavity, a feeding port and a discharging port, the feeding port is used for being communicated with the wire conveying device of the upper stage, and the discharging port is used for being communicated with the wire conveying device of the lower stage; the two detection assemblies are connected with the base and are positioned between the feeding hole and the discharging hole, the distance between the two detection assemblies is larger than the preset multiple of the diameter of the wire rod, and the detection assemblies are used for detecting the position of the wire rod so as to convey position signals to the three-dimensional forming equipment, so that the three-dimensional forming equipment can adjust the working state of the wire rod conveying device at the upper stage and/or the wire rod conveying device at the lower stage. Therefore, the wire conveying buffer device can buffer the stress of the wire caused by asynchronous movement of the plurality of wire conveying devices, and the printing reliability and printing quality are improved.

Description

Wire rod conveying buffer device and three-dimensional forming equipment

Technical Field

The utility model relates to the technical field of printing equipment, in particular to a wire conveying buffer device and three-dimensional forming equipment.

Background

The stereo forming equipment, such as 3D printer, is one accumulating technology and one fast forming technology, and is one digital model file based to produce three-dimensional object with special wax, powdered metal, plastic or other adhesive material and through successive printing of several layers of adhesive material.

The related art three-dimensional forming device, such as an FDM (Fused Deposition Modeling, process fused deposition manufacturing) printer, has a longer conveying distance from a tray to a printing head through a conveying pipeline, has a friction force between the wire and the pipeline, and the longer the pipeline is, the larger the conveying resistance is, the larger the required force of a wire conveying device for pushing the wire is required, and the wire is also deformed in the pipeline due to the resistance and thrust action, and is meshed by gears of the wire conveying device to generate a series of problems such as damage and slipping, so that the use of the machine is affected. For this purpose, part of the 3D printer is provided with two sets of wire feeding devices for feeding the wires together, one set close to the wire material tray and one set close to the print head. Because the two groups of wire conveying devices have the problems of asynchronous movement and the like, the wire is pulled or piled between the two groups of wire conveying devices, and the problems of wire stretch-breaking, structural damage, even printing failure and the like can be caused.

Disclosure of Invention

In view of the above, the present utility model provides a wire feeding buffer device and a three-dimensional forming apparatus capable of buffering the stress of a wire due to the unsynchronized movement of a plurality of wire feeding devices, thereby improving the reliability and the printing quality of printing.

An embodiment of a first aspect of the present utility model provides a wire conveying buffer device for a stereolithography apparatus, the stereolithography apparatus including at least two wire conveying devices, the wire conveying buffer device comprising: the base is provided with a passing cavity, a feeding port and a discharging port, wherein the feeding port and the discharging port are communicated with the passing cavity, the feeding port is used for being communicated with a wire conveying device at the upper stage, and the discharging port is used for being communicated with a wire conveying device at the lower stage; the two detection assemblies are connected with the base and are positioned between the feeding hole and the discharging hole, the distance between the two detection assemblies is larger than the preset multiple of the diameter of the wire rod, and the detection assemblies are used for detecting the position of the wire rod so as to convey position signals to the three-dimensional forming equipment, so that the three-dimensional forming equipment can adjust the working state of the wire rod conveying device at the upper stage and/or the wire rod conveying device at the lower stage.

Further, the two detection assemblies are distributed on two opposite sides of the passing cavity;

The two detection assemblies comprise a first detection assembly and a second detection assembly, a first sensing position of the first detection assembly and a second sensing position of the second detection assembly are positioned on the same side of a straight line where the feeding hole and the discharging hole are positioned, and a wire rod is used for passing through the space between the first detection assembly and the second detection assembly; the wire rod in the material passing cavity is pulled to be abutted with the first detection component, and the wire rod in the material passing cavity is pushed to be abutted with the second detection component.

Further, a distance between the first sensing position of the first detection assembly and the second sensing position of the second detection assembly is 8mm to 200mm;

the first detection assembly is close to the linear distribution of connecting the feed inlet and the discharge outlet, the second detection assembly is far away from the linear distribution, and the first detection assembly and the second detection assembly are positioned on two sides of a wire rod in the material passing cavity.

Further, the material passing cavity comprises a first side wall and a second side wall, the first detection component is positioned on the first side wall, the second detection component is positioned on the second side wall, the first side wall is linear, the second side wall is arc-shaped, and one side of the first detection component, facing the second side wall, is arc-shaped and protruding;

the second side wall comprises a first arc-shaped structure and second arc-shaped structures which are positioned on two sides of the first arc-shaped structure and connected with the first arc-shaped structure; the centroid of the first arc-shaped structure is positioned at one side of the first arc-shaped structure, which is close to the first side wall; the centroid of the second arc-shaped structure is positioned at one side of the second arc-shaped structure away from the first side wall;

Or the second side wall (115) comprises a first arc-shaped structure and a second arc-shaped structure which is positioned on one side of the first arc-shaped structure and is connected with the first arc-shaped structure, the second arc-shaped structure is positioned on one side of the first arc-shaped structure, which is close to the feed port (112) or the discharge port (113), and the centroid of the first arc-shaped structure is positioned on one side of the first arc-shaped structure, which is close to the first side wall (114); the centroid of the second arcuate structure is located on a side of the second arcuate structure remote from the first sidewall (114).

Further, the detection assembly includes: the electronic control substrate is arranged on the base and connected with the detection part, and the electronic control substrate is used for transmitting a position signal of the detection part to the three-dimensional forming equipment; wherein the detection part is a switch type detection piece; or the detection part comprises a light emitter, a light receiver and a groove, the detection component further comprises a light blocking piece, the light emitter and the light receiver are respectively arranged on two opposite sides of the groove, the light blocking piece is rotationally connected with the base, at least part of the light blocking piece is positioned in the material passing cavity, and wires in the material passing cavity are abutted with the light blocking piece so that the light blocking piece extends to between the light emitter and the light receiver in the groove.

Further, when the detection part comprises a light emitter, a light receiver and a groove, the detection assembly further comprises a reset piece, the reset piece is connected with the light blocking piece, and the reset piece is used for applying thrust far away from the groove to the light blocking piece when the light blocking piece is abutted with the wire; the base is provided with a blocking piece, and the blocking piece and the resetting piece are positioned on two opposite sides of the light piece.

Further, the light blocking piece comprises a rotating shaft, a rotating arm and a light shielding structure, the rotating shaft is rotationally connected with the base and is positioned outside the passing cavity, the rotating arm is connected with the rotating shaft and is positioned inside the passing cavity, the rotating arm is used for being abutted against a wire rod, the reset piece is respectively connected with the rotating arm and the electric control substrate, the light shielding structure is arranged on one side of the rotating arm, facing the detection part, of the rotating arm, and the rotating arm can enable the light shielding structure to extend into the groove and be positioned between the light emitter and the light receiver; the rotary arm is of an arc-shaped structure, and the center of the arc-shaped structure is positioned outside the material passing cavity; and/or one side of the rotating arm facing the outside of the material passing cavity is provided with a convex column, and the resetting piece is sleeved on the outer side of the convex column.

Further, the base comprises a first body and a second body, the first body and the second body are surrounded to form a material passing cavity, and the feed inlet and the discharge outlet are formed in the first body; the electric control substrate is connected with the first body and is positioned outside the material passing cavity, and the first body is provided with an avoidance hole opposite to the groove and the reset piece; the wire rod conveying buffer device further includes: the connector is connected to the feed inlet and the discharge outlet; the first end of the material guiding pipe is connected with the joint, and the other end of the material guiding pipe is connected with the adjacent wire conveying device.

An embodiment of a second aspect of the present utility model provides a stereolithography apparatus, including: at least two wire conveying devices; and the wire rod conveying buffering device of any one of the first aspects.

Further, the stereolithography apparatus further includes: the wire rod conveying device comprises a wire rod accommodating device, a printing head and a control device, wherein at least two wire rod conveying devices are configured to convey wire rods accommodated by the wire rod accommodating device to the printing head through the wire rod conveying buffer device, and the control device is connected with the wire rod conveying device and a detection assembly of the wire rod conveying buffer device; wherein, every two wire rod conveyor in two wire rod conveyor all is provided with wire rod and carries buffer between the two wire rod conveyor.

The wire rod conveying buffer device and the three-dimensional forming device provided by the embodiment of the utility model comprise at least two wire rod conveying devices, wherein each wire rod conveying device comprises a base and two detection assemblies, a material passing cavity of the base is communicated with a wire rod conveying device at the upper stage through a feed port, and is communicated with a wire rod conveying device at the lower stage through a discharge port, so that wires on a wire rod accommodating device are conveyed to the direction of a printing head through the wire rod conveying device at the upper stage, the feed port, the material passing cavity, the discharge port and the wire rod conveying device at the lower stage. Through setting up two detection components between passing material chamber is located feed inlet and discharge gate, the wire rod that is located passing material intracavity can with two detection components in the butt and make detection component carry position signal to three-dimensional former under the circumstances of atress for three-dimensional former can know the atress condition that is located the wire rod of passing material intracavity according to this position signal, three-dimensional former adjusts last level wire rod conveyor and/or next level wire rod conveyor's operating condition according to this position signal, can cushion the atress that leads to the fact the wire rod because last level wire rod conveyor and one-level wire rod conveyor's work is asynchronous, reduce the possibility and the severity of wire rod appearance pulling or piling up the phenomenon, thereby can improve reliability and the print quality of printing.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. Wherein:

fig. 1 is a schematic view showing a structure of a stereolithography apparatus according to an embodiment of the present utility model;

fig. 2 is a schematic structural view of a wire conveying buffer device according to an embodiment of the present utility model;

FIG. 3 shows an exploded view of the embodiment of FIG. 2;

FIG. 4 shows a cross-sectional view of the embodiment of FIG. 2 from one perspective;

FIG. 5 illustrates a cross-sectional view of a wire delivery buffer device provided by one embodiment of the present utility model when the wire is pulled to trigger a position signal from a first detection assembly;

FIG. 6 illustrates a cross-sectional view of a wire delivery buffer device provided by one embodiment of the present utility model when the wire is pushed to trigger a position signal from a second detection assembly;

FIG. 7 is a schematic diagram showing the assembly of an electronic control substrate, a detection portion and a wiring port of a detection assembly according to an embodiment of the present utility model;

fig. 8 shows a schematic structural view of a light blocking member according to an embodiment of the present utility model.

The correspondence between the reference numerals and the component names in fig. 1 to 8 is:

100 wire rod conveying buffer device, 110 base, 111 material passing cavity, 112 feed inlet, 113 discharge outlet, 114 first side wall, 115 second side wall, 116 first body, 117 second body, 118 avoidance hole, 120 detection component, 121 first detection component, 122 second detection component, 123 electric control substrate, 1231 connecting hole, 124 detection part, 1241 light emitter, 1242 light receiver, 1243 groove, 125 light blocking piece, 1251 rotating shaft, 1252 rotating arm, 1253 light shielding structure, 1254 convex column, 126 wiring port, 127 reset piece, 130 connecting piece, 140 joint, 150 guide pipe, 200 three-dimensional forming equipment, 210 upper stage wire rod conveying device, 220 lower stage wire rod conveying device, 230 wire rod containing device, 240 printing head, 250 wire rod.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

The wire feeding buffer device 100 and the stereoscopic shaping apparatus 200 provided according to some embodiments of the present utility model will be described below with reference to fig. 1 to 8, and in particular, the wire feeding device is applied to the stereoscopic shaping apparatus 200, and the stereoscopic shaping apparatus 200 may be a 3D printer, for example, the stereoscopic shaping apparatus 200 may be an FDM printer, or other type of printer as required.

Further, as shown in fig. 1, the stereolithography apparatus 200 includes at least two wire feeding devices, a printing head 240 and a wire receiving device 230, wherein the at least two wire feeding devices are used for feeding the wires 250 received by the wire receiving device 230 to the printing head 240, and the stereolithography apparatus 200 further includes a printing platform on which the wires are sprayed via the printing head 240 to achieve printing of the three-dimensional model.

The at least two wire conveying devices may be two, three, four or other numbers, all of which are sequentially arranged according to a conveying direction of the wires 250 from the wire accommodating device 230 to the print head 240, it is understood that any two wire conveying devices of the at least two wire conveying devices include a previous wire conveying device 210 and a next wire conveying device 220, the previous wire conveying device 210 is disposed close to the wire accommodating device 230 relative to the next wire conveying device 220, the next wire conveying device 220 is disposed close to the print head 240 relative to the previous wire conveying device 210, that is, the wires 250 in the wire accommodating device 230 need to be sequentially conveyed to the print head 240 through the previous wire conveying device 210, the wire conveying buffer device 100 and the next wire conveying device 220. In particular, the wire conveying device may be an extruder or other conveying device as required.

In the related art, since the upper stage wire conveying device and the lower stage wire conveying device move asynchronously (for example, the conveying speeds and/or the conveying forces of the upper stage wire conveying device and the lower stage wire conveying device are different), the wires are stressed, for example, the wires can have a pulling or stacking phenomenon, and if the wires are severely pulled or stacked, the wires can be broken, the structure is damaged, even the printing fails, and the like.

In view of this, as shown in fig. 1, 2 and 3, an embodiment of a first aspect of the present utility model provides a wire-feeding buffer device 100, the wire-feeding buffer device 100 including: the base 110 is provided with a passing cavity 111, a feeding port 112 and a discharging port 113, wherein the feeding port 112 and the discharging port 113 are communicated with the passing cavity 111, the feeding port 112 is used for being communicated with a wire conveying device 210 at the upper stage, and the discharging port 113 is used for being communicated with a wire conveying device 220 at the lower stage; the two detecting assemblies 120 are connected with the base 110 and located between the feeding hole 112 and the discharging hole 113, the distance between the two detecting assemblies 120 is larger than a preset multiple of the diameter of the wire 250, and the detecting assemblies 120 are used for detecting the positions of the wires so as to transmit position signals to the three-dimensional forming equipment 200, so that the three-dimensional forming equipment 200 can adjust the working states of the wire conveying device 210 at the upper stage and/or the wire conveying device 220 at the lower stage.

As shown in fig. 1, the wire feeding buffer device 100 is located between the wire feeding device 210 at the upper stage and the wire feeding device 220 at the lower stage, that is, the wire feeding buffer device 100 is located between two adjacent wire feeding devices of the at least two wire feeding devices, and the wire feeding buffer device 100 is used to buffer the stress condition of the wire 250 caused by the asynchronous movement of the two or more wire feeding devices.

Wherein, the two detecting assemblies 120 may be located at the same side of the passing cavity 111 or distributed at opposite sides of the passing cavity 111.

When two detecting assemblies 120 may be located on the same side of the passing cavity 111, if the length of the passing cavity 111 is longer than 150mm, the wire 250 is pushed, the wire 250 is S-shaped, and contacts with one of the detecting assemblies 120, and one detecting assembly 120 sends a position signal, which indicates that the wire 250 is longer, the wire 250 conveying speed of the next wire conveying device 220 needs to be increased, and/or the wire 250 conveying speed of the previous wire conveying device 210 needs to be reduced.

It will be appreciated that when the wire 250 is pulled and the wire is changing toward a straight trend in the passing chamber 111, the two subsequent detection assemblies 120 each send a position signal, which indicates that the wire is being straightened, it may be desirable to increase the wire 250 delivery speed of the wire delivery device 220 of the previous stage and/or decrease the wire 250 delivery speed of the wire delivery device 210 of the next stage.

The subsequent embodiments of the present application illustrate two detection assemblies 120 distributed on opposite sides of the passing chamber 111, where the length of the passing chamber 111 is relatively short, such as less than 150mm.

In this application, as shown in fig. 2 and 3, the wire feeding device includes a base 110 and two detecting assemblies 120, the passing cavity 111 of the base 110 is communicated with the wire feeding device 210 at the previous stage through a feed port 112, and is communicated with the wire feeding device 220 at the next stage through a discharge port 113, so that the wire 250 on the wire accommodating device 230 is fed to the direction of the printing head 240 through the wire feeding device 210 at the previous stage, the feed port 112, the passing cavity 111, the discharge port 113, and the wire feeding device 220 at the next stage. By arranging the detecting assemblies 120 on two opposite sides of the passing cavity 111 between the feeding port 112 and the discharging port 113, the distance between the two detecting assemblies 120 is larger than the preset multiple of the diameter of the wire rod 250, so that the position of the wire rod in the passing cavity 111 can be changed after the wire rod in the passing cavity 111 is stressed, the detecting assemblies 120 are used for detecting the position of the wire rod 250 to convey a position signal to the three-dimensional forming device 200, the three-dimensional forming device 200 can know the position condition of the wire rod 250 in the passing cavity 111 according to the position signal, namely, the three-dimensional forming device 200 can know the stressed condition of the wire rod 250 in the passing cavity 111 according to the position signal, and then can know the asynchronous movement condition of the wire rod conveying device 210 at the upper stage and/or the wire rod conveying device 220 at the lower stage, therefore, the three-dimensional forming device 200 can buffer the stressed condition of the wire rod 250 caused by the asynchronous operation of the wire rod conveying device 210 at the upper stage and the wire rod conveying device, the possibility of pulling or the serious phenomenon of the wire rod 250 is reduced, and the printing quality is improved.

Further, the three-dimensional forming apparatus 200 further includes a control device connected to all the wire conveying devices, and capable of adjusting the working states of all the wire conveying devices. Specifically, the control device can adjust the conveyance speed and/or conveyance force of any wire conveyance device. The control device is connected with the two detecting assemblies 120, and is capable of receiving the position signals transmitted by the detecting assemblies 120, and it can be understood that the control device can adjust the working state of one of the upper wire conveying device 210 and the lower wire conveying device 220, or can simultaneously adjust the working states of the upper wire conveying device 210 and the lower wire conveying device 220, according to the received position signals, so as to buffer the stress condition of the wire 250 in the passing cavity 111, reduce the possibility and severity of the pulling or stacking phenomenon of the wire 250, and improve the printing reliability and printing quality.

The detecting assembly 120 may detect the position of the wire 250 in the passing cavity 111 by contacting the wire 250 or non-contacting the wire, for example, the detecting assembly 120 may be a switch sensor, and the wire 250 in the passing cavity 111 may touch a switch at different positions to transmit a position signal, or the detecting assembly 120 may be a distance sensor, and the wire 250 in the passing cavity may trigger the distance sensor to transmit the position signal when reaching a suitable position of the distance sensor and not contacting the distance sensor. It will be appreciated that the detection assembly 120 may be other types of sensors, not specifically illustrated herein.

The distance between the two detecting components 120 is greater than a preset multiple of the diameter of the wire 250, and the preset multiple may be an integer or a non-integer, for example, the distance between the two detecting components 120 is greater than 3 times, 5 times, 7.5 times, 9 times, or other values of the straight line of the wire 250. By the arrangement, a certain conveying channel is provided for conveying the wires 250 between the two detection assemblies 120, meanwhile, a certain accommodating space can be provided for a small amount of stacked wires 250, so that the small amount of stacked wires 250 cannot be blocked, the reliability and smoothness of wire 250 supply are improved, and meanwhile, a certain space is provided for shaking in wire 250 conveying, so that the reliability of wire 250 conveying is ensured.

In some possible embodiments provided by the present utility model, as shown in fig. 2, 3 and 4, the two detecting assemblies 120 include a first detecting assembly 121 and a second detecting assembly 122, where a first sensing position of the first detecting assembly 121 and a second sensing position of the second detecting assembly 122 are located on the same side of a straight line where the feed inlet 112 and the discharge outlet 113 are located, and a wire is used to pass between the first detecting assembly 121 and the second detecting assembly 122; the wire 250 in the material passing cavity 111 abuts against the first detecting assembly 121 when being pulled, and abuts against the second detecting assembly 122 when the wire 250 in the material passing cavity 111 is pushed. When the wire 250 is pulled, i.e. the two ends of the wire 250 are respectively a front end and a rear end, the front end receives a large force, and the rear end receives a small force, so that the wire 250 is straightened; when the wire 250 is pushed, i.e. pushed, for example, the front end receives small force and the rear end receives large force, the wire 250 is gradually bent.

Wherein the sensing location characterizes a portion of the sensing assembly 120 that is used to sense the position of the wire 250, such as a portion of the sensing assembly 120 that interacts with, abuts against, the wire 250 at a location.

In this embodiment, since the first sensing position of the first detecting member 121 and the second sensing position of the second detecting member 122 are located on the same side of the straight line where the feed port 112 and the discharge port 113 are located, the wire 250 passes between the first detecting member 121 and the second detecting member 122 as it passes through the feed port 112 and the discharge port 113 through the feed chamber 111, so that the wire 250 becomes arc-shaped, and when the speeds of the two wire conveying devices for conveying the wire 250 are not synchronous, the wire 250 is more easily bent, the wire 250 is more easily contacted with the first detecting member 121 or the second detecting member 122, and thus one of the first detecting member 121 or the second detecting member 122 is conveyed with the position signal.

Specifically, the wire 250 in the passing cavity 111 is pulled to be abutted with the first detecting component 121, and the wire 250 in the passing cavity 111 is pushed to be abutted with the second detecting component 122, that is, the first detecting component 121 and the second detecting component 122 are contact sensors, so that the position of the wire 250 in the passing cavity 111 can be detected through the first detecting component 121 and the second detecting component 122, and the structure is simple and easy to realize.

In the above embodiment, the distance between the first sensing position of the first detecting assembly 121 and the second sensing position of the second detecting assembly 122 is 8mm to 200mm, wherein, as shown in fig. 4, the distance between the first sensing position of the first detecting assembly 121 and the second sensing position of the second detecting assembly 122 may be as shown by h, and further, the distance h between the first sensing position of the first detecting assembly 121 and the second sensing position of the second detecting assembly 122 may be 8mm, 10mm, 14mm, 16mm, 20mm, 50mm, 200mm or other values. By the arrangement, a certain conveying channel can be provided for conveying the wire 250 between the two detection assemblies 120, meanwhile, a certain accommodating space can be provided for a small amount of stacked wires 250, so that the small amount of stacked wires 250 cannot be blocked, the reliability and smoothness of wire 250 supply are improved, and meanwhile, a certain space is provided for shaking in wire 250 conveying, so that the reliability of wire 250 conveying is ensured.

In the above embodiment, the first detecting assembly 121 is disposed close to the straight line connecting the inlet 112 and the outlet 113, the second detecting assembly 122 is disposed far away from the straight line, and the first detecting assembly 121 and the second detecting assembly 122 are disposed at both sides of the wire 250 in the passing chamber 111.

As shown in fig. 5, taking the detecting assembly 120 as an example of a contact sensor, when the wire 250 in the passing cavity 111 is pulled, the length of the wire 250 in the passing cavity 111 between the feeding port 112 and the discharging port 113 is shorter, the pulled wire 250 has a movement trend close to the straight line where the feeding port 112 and the discharging port 113 are located, and because the first detecting assembly 121 is distributed close to the straight line connecting the feeding port 112 and the discharging port 113, the pulled wire 250 in the passing cavity 111 can be abutted with the first detecting assembly 121 to enable the first detecting assembly 121 to convey a position signal to the control device of the three-dimensional forming device 200. Further, the control device can know that the wire 250 located in the material passing cavity 111 is pulled according to the position signal, so that the control device reasonably adjusts the working state of the upper wire conveying device 210 and/or the lower wire conveying device 220 according to the position signal to buffer the pulling phenomenon of the wire 250, avoid the phenomena of breakage, damage to other structures and printing failure caused by serious pulling of the wire 250, and is beneficial to improving the success rate and printing quality of printing.

Specifically, the upper stage wire feeding device 210 may be controlled to increase the feeding speed and the lower stage wire feeding device 220 may be controlled to decrease the feeding speed, or the upper stage wire feeding device 210 may be controlled to maintain the original feeding speed and the lower stage wire feeding device 220 may be controlled to decrease the feeding speed, or the upper stage wire feeding device 210 may be controlled to increase the feeding speed and the lower stage wire feeding device 220 may be controlled to maintain the original feeding speed, so that the severely tensioned wire 250 may be buffered. Wherein the upper stage wire feeding device 210 and the lower stage wire feeding device 220 can continuously and simultaneously operate at the time of printing, and the operating state of the upper stage wire feeding device 210 and/or the lower stage wire feeding device 220 is adjusted as needed. The next-stage wire feeding device 220 may also continuously operate, and the previous-stage wire feeding device 210 operates to intermittently feed the wire 250 as needed, if the first detecting assembly 121 outputs a position signal, the previous-stage wire feeding device 210 starts feeding the wire 250 at a speed greater than that of the next-stage wire feeding device 220 until the second detecting assembly 122 outputs a position signal, and the previous-stage wire feeding device 210 stops operating.

As shown in fig. 6, taking the detecting assembly 120 as an example of a contact sensor, when the wire 250 in the passing cavity 111 is pushed due to serious accumulation, the length of the wire 250 in the passing cavity 111 between the feeding port 112 and the discharging port 113 is longer, the pushed wire 250 has a moving trend away from a straight line connecting the feeding port 112 and the discharging port 113, and the second detecting assembly 122 is distributed away from the straight line connecting the feeding port 112 and the discharging port 113, so that the pushed wire 250 in the passing cavity 111 can be abutted with the second detecting assembly 122 to enable the second detecting assembly 122 to convey a position signal to the control device of the three-dimensional forming apparatus 200. Further, the control device can know that the wire 250 in the passing cavity 111 is pushed due to serious stacking according to the position signal, so that the control device reasonably adjusts the working state of the upper wire conveying device 210 and/or the lower wire conveying device 220 according to the position signal to buffer the pushing phenomenon of the wire 250, avoid the phenomenon of printing failure caused by serious stacking of the wire 250, and improve the success rate and the printing quality of printing.

Specifically, the upper wire feeding device 210 may be controlled to decrease the feeding speed and the lower wire feeding device 220 may be controlled to increase the feeding speed, or the upper wire feeding device 210 may be controlled to maintain the original feeding speed and the lower wire feeding device 220 may be controlled to increase the feeding speed, or the upper wire feeding device 210 may be controlled to decrease the feeding speed and the lower wire feeding device 220 may be controlled to maintain the original feeding speed, so that the wire 250 which is severely pushed may be buffered.

Further, since the first detecting component 121 and the second detecting component 122 are located at two sides of the wire 250 in the passing cavity 111, and the first detecting component 121 is close to the straight line connecting the feeding port 112 and the discharging port 113, the second detecting component 122 is far away from the straight line, so that the wire 250 in the passing cavity 111 can only be abutted with one of the two detecting components 120 to enable the one detecting component 120 to transmit the position signal under the condition of serious stress. Therefore, according to the position signals transmitted by the first detecting assembly 121 and the second detecting assembly 122, the control device of the three-dimensional forming device 200 can timely and accurately know the stress condition of the wire 250 in the material passing cavity 111, and further reasonably adjust the working states of the wire conveying device 210 at the upper stage and/or the wire conveying device 220 at the lower stage, so as to buffer the stress condition of the wire 250 caused by the asynchronous work of the wire conveying device, and improve the printing quality and the printing success rate.

In some possible embodiments provided by the present utility model, as shown in fig. 3 and 4, the passing chamber 111 includes a first sidewall 114 and a second sidewall 115, the first detecting assembly 121 is located on the first sidewall 114, and the second detecting assembly 122 is located on the second sidewall 115, that is, the first sidewall 114 and the second sidewall 115 are located between the inlet 112 and the outlet 113. The first side wall 114 is linear, the second side wall 115 is arc-shaped, and a side of the first detection component 121 facing the second side wall 115 is arc-shaped.

In this embodiment, the first ends of the first side wall 114 and the second side wall 115 enclose a portion of the feed inlet 112, and the first side wall 114 encloses a portion of the discharge outlet 113 with the second end of the second side wall 115. That is, the material passing cavity 111 is a substantially arch-shaped cavity with two open ends (the feed inlet 112 and the discharge outlet 113) and one straight side, so that the material passing cavity 111 provides a certain conveying channel for conveying the wire 250, and meanwhile, a certain accommodating space can be provided for a small amount of stacked wire 250, so that the discharge outlet 113 is not blocked by the small amount of stacked wire 250, and the reliability and smoothness of the supply of the wire 250 are improved, and meanwhile, a certain installation space is provided for the arrangement of the first detection assembly 121 and the second detection assembly 122, so that the wire 250 can accurately and reliably abut against the first detection assembly 121 under the condition of being pulled, and the wire 250 can accurately and reliably abut against the second detection assembly 122 under the condition of being severely pushed.

The first detecting assembly 121 is located on the first side wall 114, the second detecting assembly 122 is located on the second side wall 115, one side of the first detecting assembly 121 facing the second side wall 115 is in a convex arc shape, and the vertex of the convex arc shape and the second detecting assembly 122 are located on the same side of the straight line where the feeding hole 112 and the discharging hole 1113 are located.

Wherein the second sidewall 115 includes a first arc structure and a second arc structure located at both sides of and connected to the first arc structure; the centroid of the first arc structure is located at a side of the first arc structure near the first sidewall 114; the centroid of the second arc structure is located at one side of the second arc structure away from the first side wall 114, and the second arc structure is formed by the transition of the first arc structure to the feed inlet 112 and the discharge outlet 113, so that when the wire 250 is in arc contact with the second detection component 122, tension is generated in the directions of the feed inlet 112 and the discharge outlet 113 by the two ends of the wire 250 located in the passing cavity 111, and the wire 250 is easier to advance, but not blocked by the second side wall 115. Such as facilitating the entry of the wire 250 from the inlet 112 and the exit of the consumable from the outlet 113, so that the pushing force of the wire 250 from the upper stage wire feeding device 210 can be reduced and the pulling force of the wire feeding device 220 from the lower stage can be reduced.

It will be appreciated that the second arc structure may also include only one, i.e., the second side wall 115 includes a first arc structure and a second arc structure located on one side of the first arc structure and connected to the first arc structure, the second arc structure being located on one side of the first arc structure near the feed port 112 or the discharge port 113, and the centroid of the first arc structure being located on one side of the first arc structure near the first side wall 114; the centroid of the second arcuate structure is located on a side of the second arcuate structure remote from the first sidewall 114. The second arc structure positioned at one side of the first arc structure close to the feed inlet 112 is convenient for the wire 250 to enter from the feed inlet 112, so that the thrust of the wire 250 by the wire conveying device 210 at the upper stage can be reduced; the second arc structure positioned on one side of the first arc structure close to the discharge hole 113 is convenient for the consumable to go out from the discharge hole 113, and can reduce the pulling force of the wire conveying device 220 of the next stage.

Further, as shown in fig. 2, 4, 5, 6 and 7, the probe assembly 120 includes: an electronic control substrate 123 and a detecting part 124, wherein the electronic control substrate 123 is mounted on the base 110 and connected with the detecting part 124, and the electronic control substrate 123 is used for transmitting a position signal of the detecting part 124 to the stereolithography apparatus 200.

It can be understood that the electronic control substrate 123 may be connected with a control device of the three-dimensional forming apparatus 200, for example, the detecting assembly 120 further includes a wiring port 126 installed on the electronic control substrate 123, and the electronic control substrate 123 and the control device are connected through the wiring port 126, so that the electronic control substrate 123 can transmit a position signal sent by the detecting portion 124 to the control device, and the control device can know the stress condition of the wire 250 in the material passing cavity 111 according to the position signal, so that the working state of the wire conveying device 210 at the upper stage and/or the wire conveying device 220 at the lower stage can be reasonably adjusted, so as to buffer the stress condition of the wire 250, and improve the printing quality and the printing success rate.

As shown in fig. 2, 3, 4 and 7, the wire conveying buffer device 100 further includes a connecting member 130, a connecting hole 1231 is provided on the electric control substrate 123, the connecting member 130 is connected with the base 110 through the connecting hole 1231, and the electric control substrate 123 can be mounted on the base 110. Specifically, the connection member 130 may be a bolt, and the base 110 is provided with a threaded hole on a sidewall of the material passing cavity 111, and the connection member 130 is connected with the threaded hole through a connection hole 1231 on the electronic control substrate 123, so that the electronic control substrate 123 can be mounted on the base 110.

In some embodiments provided by the present utility model, the detecting portion 124 may be a switch-type detecting member, for example, the wire 250 in the passing cavity 111 moves in the passing cavity 111 under the condition of being stressed, and when the wire 250 moves to a certain position in the passing cavity 111, the wire 250 can abut against the moving end of the switch-type detecting member and drive the moving end to move to contact with the static end of the switch-type detecting member, so that the switch-type detecting member triggers a position signal, and the position of the wire 250 is detected.

It will be appreciated that the switch-type detecting member may further include a reset function to reset to an initial position to re-detect the position of the wire 250 after the control device adjusts the operation state of the upper stage wire feeding device 210 and/or the lower stage wire feeding device 220 to buffer the force applied to the wire 250 according to the position signal fed by the switch-type detecting member.

In other embodiments provided by the present utility model, as shown in fig. 2, 4, 5, 6 and 7, the detecting portion 124 includes a light emitter 1241, a light receiver 1242 and a groove 1243, the detecting assembly 120 further includes a light blocking member 125, the light emitter 1241 and the light receiver 1242 are respectively disposed on two opposite sides of the groove 1243, the light blocking member 125 is rotatably connected with the base 110, at least part of the light blocking member 125 is located in the passing cavity 111, and the wire 250 in the passing cavity 111 abuts against the light blocking member 125 so that the light blocking member 125 extends between the light emitter 1241 and the light receiver 1242 in the groove 1243.

In this embodiment, the detecting portion 124 may be understood as a photoelectric switch, the detecting portion 124 of the detecting assembly 120 is mounted on the base 110 through the electronic control substrate 123, the light blocking member 125 of the detecting assembly 120 is rotatably connected with the base 110, where when the wire 250 in the material cavity 111 is not stressed or is stressed less, the light blocking member 125 does not extend between the light emitter 1241 and the light receiver 1242 in the groove 1243, at this time, the optical signal of the light emitter 1241 may be transmitted to the light receiver 1242, that is, the light receiver 1242 may receive the optical signal emitted by the light emitter 1241. When the wire 250 in the material passing cavity 111 is stressed greatly, the wire 250 abuts against the light blocking member 125 and makes the light blocking member 125 rotate relative to the base 110, and makes the light blocking member 125 extend between the light emitter 1241 and the light receiver 1242 in the groove 1243, at this time, due to the effect of the light blocking member 125, the light signal of the light emitter 1241 cannot be transmitted to the light receiver 1242, that is, the light receiver 1242 cannot receive the light signal emitted by the light emitter 1241, so that the signal of the light receiver 1242 is changed, and then a position signal can be emitted.

At least part of the light blocking member 125 is located in the passing cavity 111, or the whole light blocking member 125 may be installed in the passing cavity 111, or part of the light blocking member 125 may be installed in the passing cavity 111, and another part of the light blocking member 125 is installed outside the passing cavity 111, and the installation position of the light blocking member 125 may be reasonably set according to the specific structure of the light blocking member 125.

In some possible embodiments of the present utility model, as shown in fig. 2 and fig. 4, when the detecting portion 124 includes the light emitter 1241, the light receiver 1242 and the groove 1243, the detecting assembly 120 further includes a reset element 127, where the reset element 127 is connected to the light blocking element 125, and the reset element 127 is used to apply a pushing force to the light blocking element 125 away from the groove 1243 when the light blocking element 125 abuts against the wire 250, where a blocking element is disposed on the base 110, and the blocking element and the reset element 127 are located on opposite sides of the light blocking element 125. The blocking member serves to prevent the light blocking member 125 from being excessively rotated by the reset member 127.

The setting of the reset device 127 makes the wire 250 in the material passing cavity 111 abut against the light blocking device 125 to enable the detection portion 124 to send a position signal, and adjusts the working state of the first-stage wire conveying device and/or the next-stage wire conveying device 220 through the control device, so that after the stress condition of the wire 250 is buffered, the reset device 127 can enable the light blocking device 125 to move to a position not located between the light emitter 1241 and the light receiver 1242, so that the light blocking device 125 cannot prevent the light receiver 1242 from smoothly receiving the light signal emitted by the light emitter 1241, and further enable the detection assembly 120 to reset to an initial position, wherein the initial position of the detection assembly 120 is that the light receiver 1242 can receive the light signal emitted by the light emitter 1241.

After the stress condition of the wire 250 is buffered, the reset device 127 can make the light blocking device 125 move to the outside of the groove 1243 in a direction away from the groove 1243, or move to a side of the groove 1243, away from the bottom of the groove 1243, of the light emitter 1241 and the light receiver 1242, so that the light blocking device 125 is not located between the light emitter 1241 and the light receiver 1242.

Specifically, the restoring member 127 may be a spring, or other structure as desired. One end of the reset member 127 away from the light blocking member 125 may be connected to the base 110 or may be connected to the electronic control substrate 123.

In some possible embodiments of the present utility model, as shown in fig. 8, the light blocking member 125 includes a rotation shaft 1251, a rotation arm 1252, and a light shielding structure 1253, and the rotation shaft 1251 is rotatably connected to the base 110 and is located outside the material passing chamber 111. If the base 110 is located outside the material passing cavity 111, a shaft hole is provided, and the rotating shaft 1251 is rotatably connected with the base 110 through the shaft hole. The rotating arm 1252 is connected with the rotating shaft 1251 and is positioned in the material passing cavity 111, the rotating arm 1252 is used for being abutted with the wire 250, and the reset piece 127 is connected with the rotating arm 1252 and the electric control substrate 123, so that after the stress condition of the wire 250 is buffered, the rotating arm 1252 can be reset to the initial position. The light shielding structure 1253 is disposed on a side of the swivel arm 1252 facing the detecting portion 124, and rotation of the swivel arm 1252 enables the light shielding structure 1253 to extend into the recess 1243 and be located between the light emitter 1241 and the light receiver 1242. The first sidewall 114 is provided with an opening for the light blocking member 125 to pass through, and the blocking member may be a hole wall of the opening on the first sidewall 114.

Thus, when the wire 250 in the feeding chamber 111 is severely stressed and abuts against the rotating arm 1252 to rotate relative to the base 110 about the rotating shaft 1251, the light shielding structure 1253 extends to the inside of the groove 1243 and is located between the light emitter 1241 and the light receiver 1242, so that the light signal received by the light receiver 1242 is changed to send a position signal, and the electronic control substrate 123 transmits the position signal to the control device of the three-dimensional forming device 200 to buffer the stress condition of the wire 250 by adjusting the working state of the upper stage wire conveying device 210 and/or the lower stage wire conveying device 220. After the stress condition of the wire 250 is buffered, the rotating arm 1252 rotates to the initial position under the action of the reset element 127, and at this time, the light shielding structure 1253 extends to a position outside the light emitter 1241 and the light receiver 1242, so that the detecting assembly 120 can continuously detect the stress condition of the wire 250.

The light shielding structure 1253 may be a protrusion structure on the rotating arm 1252, or may be a light blocking sheet mounted on the rotating arm 1252.

Specifically, as shown in fig. 5, when the wire 250 in the passing cavity 111 is severely pulled, the wire 250 in the passing cavity 111 is abutted against the rotating arm 1252 of the first detecting assembly 121, so that the light shielding structure 1253 on the rotating arm 1252 of the first detecting assembly 121 is located between the light emitter 1241 and the light receiver 1242, at this time, the first detecting assembly 121 can send the first position signal, and the second detecting assembly 122 is at the initial position under the action of the reset element 127 due to the fact that the light shielding structure 1253 on the rotating arm 1252 of the second detecting assembly 122 is not located between the light emitter 1241 and the light receiver 1242. At this time, the control device of the stereoscopic forming apparatus 200 can know that the wire 250 in the passing cavity 111 is severely pulled according to the received first position signal, so that the working state of the upper wire conveying device 210 and/or the lower wire conveying device 220 can be adjusted to alleviate the problem that the wire 250 in the passing cavity 111 is severely pulled, and after the problem that the wire 250 is severely pulled is buffered, the first detecting assembly 121 is restored to the initial position under the action of the reset element 127, so that the light shielding structure 1253 on the rotating arm 1252 of the first detecting assembly 121 is not located between the light emitter 1241 and the light receiver 1242.

As shown in fig. 6, when the wire 250 in the feeding chamber 111 is pushed seriously, the wire 250 in the feeding chamber 111 abuts against the rotating arm 1252 of the second detecting assembly 122, so that the light shielding structure 1253 on the rotating arm 1252 of the second detecting assembly 122 is located between the light emitter 1241 and the light receiver 1242, at this time, the second detecting assembly 122 can send the second position signal, and the first detecting assembly 121 is at the initial position under the action of the reset member 127 due to the fact that the first detecting assembly 121 is not abutted against the wire 250, that is, the light shielding structure 1253 on the rotating arm 1252 of the first detecting assembly 121 is not located between the light emitter 1241 and the light receiver 1242. At this time, the control device of the stereoscopic forming apparatus 200 can know that the wire 250 in the passing cavity 111 is severely pulled according to the received second position signal, so that the working state of the upper wire conveying device 210 and/or the lower wire conveying device 220 can be adjusted to alleviate the serious problem that the wire 250 in the passing cavity 111 is severely pushed, and after the serious problem that the wire 250 is severely pushed is buffered, the second detecting assembly 122 is restored to the initial position under the action of the reset element 127, so that the light shielding structure 1253 on the rotating arm 1252 of the second detecting assembly 122 is not located between the light emitter 1241 and the light receiver 1242.

In some possible embodiments of the present utility model, as shown in fig. 4, the rotating arm 1252 is in an arc structure, and the center of the arc structure is located outside the passing cavity 111, for example, the rotating arm 1252 of the first detecting component 121 has a certain convex arc with respect to the first side wall 114 of the passing cavity 111, and is bent from the first side wall 114 to the second side wall 115, i.e., to the direction inside the passing cavity 111, and the rotating arm 1252 of the second detecting component 122 is bent from the second side wall 115 to the direction of the first side wall 114, i.e., to the direction inside the passing cavity 111. Because the wire rod 250 in the passing cavity 111 is located between the rotating arms 1252 of the two detecting assemblies 120, the wire rod 250 in the passing cavity 111 can be ensured to be abutted against the rotating arm 1252 of the first detecting assembly 121 under the condition of severe tension, and the wire rod 250 in the passing cavity 111 can be abutted against the rotating arm 1252 of the second detecting assembly 122 under the condition of severe pushing, so that the two detecting assemblies 120 can accurately and timely detect the tension condition of the wire rod 250 in the passing cavity 111.

Meanwhile, the first detecting assembly 121 and the second detecting assembly 122 have the same structure, that is, the two detecting assemblies 120 with the same structure can detect the conditions of serious tension and pushing of the wire rod at the same time, so that the standardization rate of the wire rod conveying buffer device 100 is improved, and the cost is saved.

In some possible embodiments of the present utility model, as shown in fig. 8, a boss 1254 is disposed on a side of the rotary arm 1252 facing the outside of the passing chamber 111, and the reset element 127 is sleeved on the outside of the boss 1254. The setting of projection 1254 has played certain guide effect for the application of force direction of restoring member 127, and then can ensure that the atress condition of wire rod 250 in material passing chamber 111 obtains the buffering back, under the effect of restoring member 127 for rocking arm 1252 can drive the light shielding structure 1253 and remove to the position not between light emitter 1241 and light receiver 1242, can ensure that detection assembly 120 resets to initial position promptly, and then is favorable to improving detection assembly 120's life.

In some possible embodiments of the present disclosure, as shown in fig. 2 and 3, the base 110 includes a first body 116 and a second body 117, where the first body 116 and the second body 117 enclose a material passing cavity 111, and the material inlet 112 and the material outlet 113 are formed on the first body 116.

The first body 116 and the second body 117 may be detachable, and the first body 116 and the second body 117 may be detachable through bolts, connection structures, and the like. Such setting, the assembly of being convenient for, simultaneously, the convenience is dismantled the back with first body 116 and second body 117, to being located the detection component 120 of passing in the material chamber 111 and maintaining, simultaneously, also can dredge wire rod 250 after first body 116 and second body 117 are dismantled under the condition that the material chamber 111 was passed to wire rod 250 card, convenient operation.

Wherein, feed inlet 112 and discharge gate 113 are offered on first body 116 for feed inlet 112 and discharge gate 113 can be circumference closed round hole, and such setting has avoided gap scratch wire rod 250 or has blocked the problem of wire rod 250 with first body 116 and second body 117 encirclement into feed inlet 112 and discharge gate 113 and has had the gap, is favorable to improving wire rod 250's life and is favorable to improving conveying efficiency.

In this embodiment, as shown in fig. 2 and 3, the electronic control substrate 123 is connected to the first body 116 and is located outside the passing chamber 111, and the first body 116 is provided with a relief hole 118 opposite to the groove 1243 and the reset member 127.

The electric control substrate 123 is arranged outside the passing cavity 111, so that the electric control substrate 123 is convenient to repair and replace, further, the detection part 124 is arranged on the electric control substrate 123 and can be positioned outside the passing cavity 111, the detection part 124 is convenient to repair and replace outside the passing cavity 111, the disassembly operation of the first body 116 and the second body 117 is simplified, and the maintenance efficiency is improved.

Through set up on first body 116 with recess 1243 and reset piece 127 relative dodge hole 118 for reset piece 127 can be reliably with automatically controlled base plate 123 and rocking arm 1252 through dodging the hole 118 and be connected, rocking arm 1252 is in the in-process for base 110 pivoted, through dodging hole 118, can make rocking arm 1252 reach the light-shielding structure 1253 and be located between light emitter 1241 and the light receiver 1242 in the recess 1243 when reasonable position.

Specifically, the number of the avoidance holes 118 formed in the first body 116 may be two, and the two avoidance holes 118 are respectively opposite to the groove 1243 and the reset member 127, or the number of the avoidance holes 118 formed in the first body 116 may be one, and one avoidance hole 118 is opposite to the groove 1243 and the reset member 127.

Further, a rotation shaft 1251 of the light blocking member 125 is also installed on the first body 116, and is located outside the material passing cavity 111.

In some possible embodiments provided by the present utility model, as shown in fig. 1, 2, 3 and 4, the wire feeding buffering device 100 further includes: the joint 140 is connected with the feed inlet 112 and the discharge outlet 113; the first end of the guide pipe 150 is connected with the joint 140, and the other end of the guide pipe 150 is connected with an adjacent wire conveying device.

Through the arrangement of the joint 140 and the material guiding pipe 150, the wire conveying buffer device 100 can be quickly and conveniently connected with the wire conveying device 210 of the upper stage and the wire conveying device 220 of the lower stage, and the operation is simple and the assembly efficiency is high. Meanwhile, in the case that the wire feeding buffer device 100 needs to be maintained, the wire feeding buffer device 100 can be detached from the two wire feeding buffer devices through the two connectors 140, so that maintenance operation of the wire feeding buffer device is conveniently displayed.

At the same time, the arrangement is such that the wire feeding buffer device 100 can be selectively installed as a separate fitting between two adjacent wire feeding devices among the plurality of wire feeding devices.

As shown in fig. 1, an embodiment of a second aspect of the present utility model provides a stereolithography apparatus 200, including: at least two wire conveying devices; and the wire feeding buffer device 100 of any one of the first aspects. Since the three-dimensional forming apparatus 200 includes the wire conveying buffer device 100 according to any one of the first aspect, the three-dimensional forming apparatus has all the beneficial technical effects of the wire conveying buffer device 100, which are not described in detail herein.

In the above embodiment, as shown in fig. 1, the stereolithography apparatus 200 further includes: the wire-holding device 230, the print head 240, and the control device, at least two wire-feeding devices configured to feed the wire 250 held by the wire-holding device 230 to the print head 240 via the wire-feeding buffer device 100, the control device being connected to the wire-feeding device, the detection assembly 120 of the wire-feeding buffer device 100; wherein, each adjacent two wire conveying devices in the two wire conveying devices are provided with a wire conveying buffer device 100 therebetween.

That is, the number of the wire conveying buffer devices 100 is one less than that of the wire conveying devices, all the wire conveying buffer devices 100 are sequentially located between every two adjacent wire conveying devices, and by means of the arrangement, the stress conditions of the wires 250 between any one wire conveying buffer device 100 and two adjacent wire conveying devices can be buffered, so that all the wire conveying buffer devices 100 can buffer the stress conditions of the wires 250 between all the wire conveying devices in a segmented manner, the overall buffering function of the wires 250 is improved, the problems that the wires 250 are seriously pulled or accumulated, the wires 250 are seriously broken, the structure is damaged, even the printing is failed and the like are avoided, the printing reliability and the printing quality are improved, and the wire conveying buffer device is suitable for popularization and application.

In a specific embodiment, as shown in fig. 1 to 8, the present utility model provides a wire-feeding buffer device 100 for a stereolithography apparatus 200, the stereolithography apparatus 200 including at least two wire-feeding devices, the wire-feeding buffer device 100 comprising: the base 110 is provided with a passing cavity 111, a feeding port 112 and a discharging port 113, wherein the feeding port 112 and the discharging port 113 are communicated with the passing cavity 111, the feeding port 112 is used for being communicated with a wire conveying device 210 at the upper stage, and the discharging port 113 is used for being communicated with a wire conveying device 220 at the lower stage; the two detecting assemblies 120 are connected with the base 110 and located between the feeding hole 112 and the discharging hole 113, the distance between the two detecting assemblies 120 is larger than a preset multiple of the diameter of the wire 250, and the detecting assemblies 120 are used for detecting the positions of the wires so as to transmit position signals to the three-dimensional forming equipment 200, so that the three-dimensional forming equipment 200 can adjust the working states of the wire conveying device 210 at the upper stage and/or the wire conveying device 220 at the lower stage.

Further, two detecting assemblies 120 are distributed on two opposite sides of the material passing cavity 111;

the two detecting assemblies 120 include a first detecting assembly 121 and a second detecting assembly 122, the first sensing position of the first detecting assembly 121 and the second sensing position of the second detecting assembly 122 are located on the same side of the straight line where the feed inlet 112 and the discharge outlet 113 are located, and the wire rod is used for passing through between the first detecting assembly 121 and the second detecting assembly 122; wherein the wire 250 in the passing cavity 111 is pulled to be abutted with the first detecting assembly 121, and the wire 250 in the passing cavity 111 is pushed to be abutted with the second detecting assembly 122.

Further, the distance between the first sensing position of the first detecting assembly 121 and the second sensing position of the second detecting assembly 122 is 8mm to 200mm; the first detection assembly 121 is close to the linear distribution connecting the feeding hole 112 and the discharging hole 113, the second detection assembly 122 is far away from the linear distribution, and the first detection assembly 121 and the second detection assembly 122 are positioned on two sides of the wire 250 in the passing cavity 111.

Further, the material passing cavity 111 includes a first side wall 114 and a second side wall 115, the first detecting component 121 is located on the first side wall 114, the second detecting component 122 is located on the second side wall 115, the first side wall 114 is in a straight line shape, the second side wall 115 is in a circular arc shape, and one side of the first detecting component 121 facing the second side wall 115 is in a convex arc shape;

The second sidewall 115 includes a first arc structure, and second arc structures located at both sides of and connected to the first arc structure; the centroid of the first arc structure is located at a side of the first arc structure near the first sidewall 114; the centroid of the second arc structure is located at a side of the second arc structure away from the first sidewall 114;

or the second side wall 115 comprises a first arc structure and a second arc structure which is positioned on one side of the first arc structure and connected with the first arc structure, the second arc structure is positioned on one side of the first arc structure close to the feed inlet 112 or the discharge outlet 113, and the centroid of the first arc structure is positioned on one side of the first arc structure close to the first side wall 114; the centroid of the second arcuate structure is located on a side of the second arcuate structure remote from the first sidewall 114.

Further, the probe assembly 120 includes: an electronic control substrate 123 and a detecting part 124, wherein the electronic control substrate 123 is mounted on the base 110 and connected with the detecting part 124, and the electronic control substrate 123 is used for transmitting a position signal of the detecting part 124 to the stereolithography apparatus 200; wherein the detecting part 124 is a switch type detecting member; or the detecting part 124 comprises a light emitter 1241, a light receiver 1242 and a groove 1243, the detecting assembly 120 further comprises a light blocking member 125, and the light emitter 1241 and the light receiver 1242 are respectively arranged at two opposite sides of the groove 1243; the light blocking member 125 is rotatably connected to the base 110, at least a portion of the light blocking member 125 is positioned within the pass through cavity 111, and the wire 250 within the pass through cavity 111 abuts the light blocking member 125 such that the light blocking member 125 extends between the light emitter 1241 and the light receiver 1242 within the recess 1243.

Further, when the detecting portion 124 includes the light emitter 241, the light receiver 1242 and the groove 1243, the detecting assembly 120 further includes a reset element 127, the reset element 127 is connected to the light blocking element 125, and the reset element 127 is configured to apply a pushing force away from the groove 1243 to the light blocking element 125 when the light blocking element 125 abuts against the wire 250; the base 110 is provided with a blocking member, and the blocking member and the reset member 127 are positioned at opposite sides of the light blocking member 125.

Further, the light blocking member 125 includes a rotation shaft 1251, a rotation arm 1252, and a light shielding structure 1253, the rotation shaft 1251 is rotatably connected with the base 110 and is located outside the passing cavity 111, the rotation arm 1252 is connected with the rotation shaft 1251 and is located inside the passing cavity 111, the rotation arm 1252 is used for being abutted against the wire 250, the reset member 127 is respectively connected with the rotation arm 1252 and the electric control substrate 123, the light shielding structure 1253 is arranged on one side of the rotation arm 1252 facing the detection portion 124, and rotation of the rotation arm 1252 can enable the light shielding structure 1253 to extend into the groove 1243 and be located between the light emitter 1241 and the light receiver 1242; wherein, the rotary arm 1252 is in an arc structure, and the center of the arc structure is positioned outside the material passing cavity 111; and/or the side of the rotating arm 1252 facing the outside of the material passing cavity 111 is provided with a convex column 1254, and the reset piece 127 is sleeved on the outer side of the convex column 1254.

Further, the base 110 includes a first body 116 and a second body 117, the first body 116 and the second body 117 enclose a material passing cavity 111, and a feed inlet 112 and a discharge outlet 113 are formed on the first body 116; the electric control substrate 123 is connected with the first body 116 and is located outside the material passing cavity 111, and the first body 116 is provided with a dodging hole 118 opposite to the groove 1243 and the reset element 127.

Further, the wire feeding buffer device 100 further includes: the joint 140 is connected with the feed inlet 112 and the discharge outlet 113; the first end of the guide pipe 150 is connected with the joint 140, and the other end of the guide pipe 150 is connected with an adjacent wire conveying device.

The present utility model also provides a stereolithography apparatus 200 comprising: at least two wire conveying devices; and the wire feeding buffer device 100 of any one of the first aspects.

Further, the stereolithography apparatus 200 further includes: the wire-holding device 230, the print head 240, and the control device, at least two wire-feeding devices configured to feed the wire 250 held by the wire-holding device 230 to the print head 240 via the wire-feeding buffer device 100, the control device being connected to the wire-feeding device, the detection assembly 120 of the wire-feeding buffer device 100; wherein, each wire rod conveying device of the two wire rod conveying devices is provided with a wire rod conveying buffer device 100.

In the description of the present utility model, the term "plurality" refers to two or more.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A wire conveying buffer device for a stereoscopic shaping apparatus, characterized in that the stereoscopic shaping apparatus comprises at least two wire conveying devices, the wire conveying buffer device comprising:

the base is provided with a passing cavity, a feeding port and a discharging port, wherein the feeding port and the discharging port are communicated with the passing cavity, the feeding port is used for being communicated with a wire conveying device at the upper stage, and the discharging port is used for being communicated with a wire conveying device at the lower stage;

the two detection assemblies are connected with the base and are positioned between the feeding hole and the discharging hole, the distance between the two detection assemblies is larger than the preset multiple of the diameter of the wire rod, and the detection assemblies are used for detecting the position of the wire rod so as to convey position signals to the three-dimensional forming equipment, so that the three-dimensional forming equipment can adjust the working state of the wire rod conveying device at the upper stage and/or the wire rod conveying device at the lower stage.

2. The wire feed buffer device of claim 1, wherein,

the two detection assemblies are distributed on two opposite sides of the material passing cavity;

the two detection assemblies comprise a first detection assembly and a second detection assembly, a first sensing position of the first detection assembly and a second sensing position of the second detection assembly are positioned on the same side of a straight line where the feeding hole and the discharging hole are, and the wire rod is used for passing through the space between the first detection assembly and the second detection assembly;

the wire rod in the material passing cavity is pulled to be abutted with the first detection assembly, and the wire rod in the material passing cavity is pushed to be abutted with the second detection assembly.

3. The wire feed buffer device of claim 2,

a distance between a first sensing position of the first detection assembly and a second sensing position of the second detection assembly is 8mm to 200mm;

the first detection assembly is close to and connects the feed inlet with the straight line distribution of discharge gate, the second detection assembly is kept away from the straight line is distributed, the first detection assembly with the second detection assembly is located the both sides of the wire rod in the material passing cavity.

4. The wire feeding buffer device according to claim 3, wherein,

the material passing cavity comprises a first side wall and a second side wall, the first detection component is positioned on the first side wall, the second detection component is positioned on the second side wall, the first side wall is in a straight line shape, the second side wall is in an arc shape, and one side of the first detection component, facing the second side wall, is in a convex arc shape;

or the second side wall comprises a first arc-shaped structure and a second arc-shaped structure which is positioned at one side of the first arc-shaped structure and connected with the first arc-shaped structure, the second arc-shaped structure is positioned at one side of the first arc-shaped structure, which is close to the feed inlet or the discharge outlet, and the centroid of the first arc-shaped structure is positioned at one side of the first arc-shaped structure, which is close to the first side wall; the centroid of the second arc-shaped structure is positioned at one side of the second arc-shaped structure away from the first side wall.

5. The wire delivery buffer of claim 1, wherein the detection assembly comprises:

the electronic control substrate is arranged on the base and connected with the detection part, and the electronic control substrate is used for transmitting a position signal of the detection part to the three-dimensional forming equipment;

wherein the detection part is a switch type detection piece; or (b)

The detection part comprises a light emitter, a light receiver and a groove, the detection assembly further comprises a light blocking piece, the light emitter and the light receiver are respectively arranged on two opposite sides of the groove, the light blocking piece is rotationally connected with the base, at least part of the light blocking piece is positioned in the material passing cavity, and wires in the material passing cavity are abutted to the light blocking piece so that the light blocking piece extends between the light emitter and the light receiver in the groove.

6. The wire feeding buffer device according to claim 5, wherein when the detecting portion includes the light emitter, the light receiver and the groove,

the detection assembly further comprises a resetting piece, wherein the resetting piece is connected with the light blocking piece, and the resetting piece is used for applying thrust away from the groove to the light blocking piece when the light blocking piece is in abutting connection with the wire; the base is provided with a blocking piece, and the blocking piece and the resetting piece are positioned on two opposite sides of the light blocking piece.

7. The wire rod conveying and buffering device according to claim 6, wherein the light blocking member comprises a rotating shaft, a rotating arm and a light shielding structure, the rotating shaft is rotatably connected with the base and located outside the passing cavity, the rotating arm is connected with the rotating shaft and located inside the passing cavity, the rotating arm is used for being abutted against wires, the reset member is respectively connected with the rotating arm and the electric control substrate, the light shielding structure is arranged on one side, facing the detection portion, of the rotating arm, and the rotating arm can enable the light shielding structure to extend into the groove and located between the light emitter and the light receiver;

the rotary arm is of an arc-shaped structure, and the circle center of the arc-shaped structure is positioned outside the material passing cavity; and/or

The rocking arm towards the outside one side of passing the material chamber is provided with the projection, reset piece cover is established the outside of projection.

8. The wire feed buffer device of claim 6, wherein,

the base comprises a first body and a second body, the first body and the second body are encircled to form the material passing cavity, and the feed inlet and the discharge outlet are formed in the first body;

The electric control substrate is connected with the first body and is positioned outside the material passing cavity, and the first body is provided with an avoidance hole opposite to the groove and the reset piece;

the wire rod conveying buffer device further comprises:

the connector is connected with the feed inlet and the discharge outlet;

the first end of the material guiding pipe is connected with the joint, and the other end of the material guiding pipe is connected with the adjacent wire conveying device.

9. A stereolithography apparatus, comprising:

at least two wire conveying devices; and the wire rod conveying buffering device according to any one of claims 1 to 8.

10. The stereolithography apparatus according to claim 9, further comprising:

a wire-holding device, a print head, and a control device, the at least two wire-conveying devices being configured to convey wires held by the wire-holding device to the print head via the wire-conveying buffer device, the control device being connected to the wire-conveying device, a detection assembly of the wire-conveying buffer device;

wherein, each adjacent two wire rod conveying devices in the two wire rod conveying devices are provided with the wire rod conveying buffer device.