CN114347467A - 3D printer, method for the same, detection apparatus, medium, and program product - Google Patents
3D printer, method for the same, detection apparatus, medium, and program product Download PDFInfo
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- CN114347467A CN114347467A CN202111618281.3A CN202111618281A CN114347467A CN 114347467 A CN114347467 A CN 114347467A CN 202111618281 A CN202111618281 A CN 202111618281A CN 114347467 A CN114347467 A CN 114347467A
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- 238000010146 3D printing Methods 0.000 description 4
- 238000012840 feeding operation Methods 0.000 description 4
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Abstract
A3D printer, a method for a 3D printer, a detection apparatus, a storage medium, and a computer program product. The 3D printer includes a detection device, an extruder, and a processor. The detection device includes: the body is arranged in a material guide pipeline of the 3D printer; a driven wheel mounted on the body, wherein the driven wheel is arranged such that when one of the line feeding and the line retracting is performed, the line is pressed against a tread of the driven wheel to rotate the driven wheel; and at least one sensor mounted on the body for detecting a rotational state of the driven wheel. The extruder is separate from the detection device and is configured to drive the strand movement for strand feeding or strand withdrawal. The processor is configured to execute instructions to determine a state of motion of the strand based on a state of rotation of the driven wheel.
Description
Technical Field
The present disclosure relates to the field of 3D printing technologies, and in particular, to a 3D printer, a method for a 3D printer, a detection apparatus, a storage medium, and a computer program product.
Background
The 3D printer, also known as a three-dimensional printer or a stereo printer, is a process equipment for rapid prototyping, and is usually realized by printing a material by using a digital technology. 3D printers are often used to manufacture models or parts in the fields of mold manufacturing, industrial design, and the like. In recent years, 3D printing technology has had a promising application in jewelry, footwear, industrial design, construction, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms, and other fields.
In the three-dimensional printing method known in the art, the movement state of the strand is generally controlled by the extruder of the 3D printer while performing the feeding operation and the discharging operation. However, if the movement state of the strand may be different from that set by the extruder in some special cases, a device for detecting the movement state of the strand in real time needs to be added to the 3D printer.
Disclosure of Invention
The present disclosure provides a 3D printer, a method for a 3D printer, a detection apparatus, a computer-readable storage medium, and a computer program product.
According to one aspect of the present disclosure, a 3D printer is provided. This 3D printer includes: including detection device, this detection device includes: the body is arranged in a material guide pipeline of the 3D printer; a driven wheel mounted on the body, wherein the driven wheel is arranged such that when one of the line feeding and the line retracting is performed, the line is pressed against a tread of the driven wheel to rotate the driven wheel; the sensor is arranged on the body and used for detecting the rotation state of the driven wheel; an extruder, separate from the detection device, configured to drive the strand movement for strand feeding or strand withdrawal; and a processor configured to execute instructions to determine a state of motion of the strand based on a state of rotation of the driven wheel.
According to another aspect of the present disclosure, there is also provided a method for a 3D printer. The 3D printer comprises a detection device and an extruder. The detection device comprises: the body is arranged in a material guide pipeline of the 3D printer; a driven wheel mounted on the body, wherein the driven wheel is arranged such that when one of the line feeding and the line retracting is performed, the line is pressed against a tread of the driven wheel to rotate the driven wheel; and at least one sensor mounted on the body for detecting a rotational state of the driven wheel. The extruder is separate from the detection device and is configured to drive the strand movement for strand feeding or strand withdrawal. The method comprises the following steps: acquiring a rotation state of a driven wheel detected by at least one sensor; determining the linear speed and the rotation direction of the driven wheel based on the rotation state; and determining the moving speed and the moving direction of the stockline based on the linear speed and the rotating direction of the driven wheel.
According to another aspect of the present disclosure, there is also provided a detection apparatus for a 3D printer. The detection device includes: the body is arranged in a material guide pipeline of the 3D printer; a driven wheel mounted on the body, wherein the driven wheel is arranged such that when the 3D printer performs one of a line feeding and a line retracting, the line presses against a wheel face of the driven wheel to drive the driven wheel to rotate; and at least one sensor mounted on the body for detecting a rotational state of the driven wheel, wherein the rotational state of the driven wheel indicates a movement state of the stockline. The driven wheel includes or is formed from a magnet and the at least one sensor includes a hall sensor disposed adjacent the driven wheel to detect a rotational condition of the driven wheel. Alternatively, the detection device further comprises a turntable, which is coaxially and fixedly connected with the driven wheel, the turntable comprises a magnet or is formed by a magnet, and the at least one sensor comprises a hall sensor, which is arranged adjacent to the turntable to detect the rotation state of the turntable as the rotation state of the driven wheel.
According to yet another aspect of the present disclosure, there is also provided a non-transitory computer readable storage medium having instructions stored thereon, wherein the instructions, when executed by a processor of a 3D printer as described above, implement the method as described above.
According to yet another aspect of the present disclosure, there is also provided a computer program product comprising instructions, wherein the instructions, when executed by a processor of a 3D printer as described above, implement the method as described above.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present disclosure, nor do they limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.
Drawings
In the drawings, like reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily to scale. It is appreciated that these drawings depict only some embodiments in accordance with the disclosure and are not to be considered limiting of its scope.
Fig. 1 illustrates a block diagram of a 3D printer according to an exemplary embodiment of the present disclosure;
FIG. 2 shows a schematic view of a partial structure of a detection apparatus according to an exemplary embodiment of the present disclosure;
FIG. 3 shows a schematic structural diagram of a detection apparatus according to an exemplary embodiment of the present disclosure;
FIG. 4 shows a flow diagram of a method for a 3D printer according to an example embodiment of the present disclosure;
FIG. 5 shows a flow diagram of a method for a 3D printer according to an example embodiment of the present disclosure; and
fig. 6 is a block diagram illustrating a structure of a detection apparatus for a 3D printer according to an embodiment of the present disclosure.
Detailed Description
Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings, in which various details of the embodiments of the disclosure are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
In the present disclosure, unless otherwise specified, the use of the terms "first", "second", etc. to describe various elements is not intended to limit the positional relationship, the timing relationship, or the importance relationship of the elements, and such terms are used only to distinguish one element from another. In some examples, a first element and a second element may refer to the same example of the element, and in some cases, based on the context, they may also refer to different examples.
The terminology used in the description of the various described examples in this disclosure is for the purpose of describing particular examples only and is not intended to be limiting. Unless the context clearly indicates otherwise, if the number of elements is not specifically limited, the elements may be one or more. Furthermore, the term "and/or" as used in this disclosure is intended to encompass any and all possible combinations of the listed items.
In the existing 3D printer, whether the feeding operation or the discharging operation is performed is controlled by a stepping motor provided in the extruder, but the extruder cannot know the actual motion state of the strand in real time, and a detection device capable of detecting the motion state of the strand needs to be added to the 3D printing system. Meanwhile, since the guide duct of the 3D printer is generally limited in space, it is desirable that such a detection apparatus has a compact size.
In view of this, the disclosed embodiments provide a 3D printer and a method for a 3D printer that may alleviate, alleviate or even eliminate the above-mentioned problems.
Fig. 1 illustrates a block diagram of a 3D printer 100 according to an embodiment of the present disclosure. The 3D printer 100 will be described in detail with reference to fig. 1.
As shown in fig. 1, the 3D printer 100 includes: a detection device 101, an extruder 102 and a processor 103, and the detection device 101 comprises a body 104, a driven wheel 105 and at least one sensor 106.
The extruder 102 is separate from the detection device 101, i.e. they are arranged at different locations in the 3D printer. The extruder 102 is configured to drive movement of a strand (not shown) for strand feeding or strand withdrawal. In one example, the extruder 102 includes a pair of extrusion wheels therein, which are powered by a stepper motor to move a strand for feeding or discharging.
The detection device 101 includes a body 104, and the body 104 is disposed in a material guide pipeline of the 3D printer. In one example, the detection device 101 is disposed between a tray (not shown) and the extruder 102. When feeding the material line, the material line used by the 3D printer 100 passes through the detection device 101 including the body 104 and then passes through the extruder 102 in the material guiding pipeline. In another example, the detection device 101 may be disposed between the extruder 102 and a hot end (not shown). In the case of the strand feeding, the strand passes through the extruder 102 and then the detection device 101.
The detection device 101 further comprises a driven wheel 105, the driven wheel 105 being mounted on the body 104. The driven pulley 105 is arranged such that when one of the wire feeding and the wire retracting is performed, the wire is pressed against the tread of the driven pulley 105, thereby rotating the driven pulley 105.
In one example, a spring force may be applied to the driven wheel 105 by a spring mounted on the body 104 towards the strand such that a sufficient frictional force is created between the driven wheel 105 and the strand as the strand passes the driven wheel 105. Thus, as the line moves, the driven pulley 105 begins to rotate under the drive of the line.
It will be appreciated that the driven wheel 105 may also be caused to follow the line in other ways. In one example, driven wheel 105 may be secured to body 104 in a position such that when the wire passes over driven wheel 105, driven wheel 105 is likewise caused to rotate together.
The detection device 101 further comprises at least one sensor 106, the at least one sensor 106 being mounted on the body 104 for detecting the rotational state of the driven wheel 105. In one example, the rotational state may be an angular speed and a rotational direction of rotation of the driven wheel.
The processor 103 is configured to execute instructions to determine a state of motion of the wire based on a state of rotation of the driven wheel. In the 3D printer, the method for determining the motion state of the stockline based on the rotation state of the driven wheel will be specifically described later with reference to fig. 4, and details are not repeated here.
According to some embodiments, the detection device 101 may further comprise a drive wheel (not shown in fig. 1) for driving the strand in cooperation with the extruder 102. The driving wheel is arranged opposite to the driven wheel with respect to the stock line so that the stock line is pressed against a wheel face of the driving wheel to be driven by the driving wheel when the 3D printer performs one of stock line feeding and stock line retreat.
Referring now to fig. 2, fig. 2 shows a cross-section of an example of the detection apparatus 101 of fig. 1. In the example of fig. 2, the detection device 101 comprises a spring 201, a driven wheel 202, a driving wheel 203 and a gear 204 connected to the driving wheel 203 by a shaft. The driven wheel 202 and the driving wheel 203 are distributed on both sides of the strand, so that the strand is clamped by the driven wheel 202 and the driving wheel 203 to feed or retreat. When the strand is driven by an extruder (e.g., extruder 102 in fig. 1) to pass between driven pulley 202 and driving pulley 203, driving pulley 203 assists the extruder in driving the strand, and spring 201 causes driven pulley 202 to generate sufficient friction with the strand by which driven pulley 202 rotates.
In one example, when the 3D printer performs a strand feeding operation, the extruder drives the strand from top to bottom, which rotates the driven wheel 202 in a clockwise direction. To cooperate with the strand feeding operation, the gear 204 is powered by, for example, a motor, and the drive gear 204 rotates in a counterclockwise direction while the capstan 203 also rotates at the same angular velocity and direction as the gear 204.
In another example, when the 3D printer performs a strand retraction operation, the extruder drives the strand from bottom to top, which drives the driven wheel 202 to rotate in a counterclockwise direction. To coordinate with the line feed operation, the gear 204 is powered by, for example, a motor, and the drive gear 204 rotates in a clockwise direction while the capstan 203 also rotates at the same angular velocity and direction as the gear 204.
Although the driving wheel 203 is driven to rotate by the gear 204 in the example of fig. 2, it is understood that the power may be transmitted to the driving wheel 203 by a belt transmission, a link transmission, or a direct transmission, which is not limited herein.
Alternatively, in an embodiment not illustrated, the detection device 101 may not comprise the gear 204 connected to the driving wheel 203 through a shaft, illustrated in fig. 2, i.e. there may be two driven wheels in the detection device 101.
In such an embodiment, the driven wheel described above is a first driven wheel, and the detection device 101 further comprises a second driven wheel. The second driven wheel may comprise a bearing, for example in the form of an extrusion wheel similar to the driven wheel 202 or the driving wheel 203 in fig. 2. Alternatively, the second driven wheel may be constituted by a bearing. The second driven wheel is arranged opposite to the first driven wheel with respect to the material line, so that when the 3D printer performs one of material line feeding and material line retracting, the material line presses against a wheel face of the second driven wheel to rotate the second driven wheel.
The second driven wheel comprising a bearing or consisting of the bearing is arranged to be matched with the first driven wheel to clamp the stockline, so that the stockline is prevented from slipping from the driven wheel or rolling in the material guide pipeline. In the embodiment that the second driven wheel is composed of the bearing, the outer surface of the bearing is a smooth cylindrical surface, so that the friction force between the second driven wheel and the stockline can be reduced, and the phenomenon that the stockline moves to be blocked so that normal conveying cannot be finished is avoided.
In the 3D printer, according to some embodiments, the detection device further includes a turntable, the turntable being coaxially and fixedly connected with the driven wheel, the turntable including or being constituted by a magnet, and the at least one sensor including a hall sensor disposed adjacent to the turntable to detect a rotation state of the turntable as a rotation state of the driven wheel.
Fig. 3 shows an example of the detection device 101 of fig. 1. In the example of fig. 3, the turntable 301 and the driven wheel 302 are fixedly connected through a rotating shaft 304. When the driven wheel 302 starts to rotate, the driven wheel 302 transmits power to the rotary disc 301 through the rotating shaft 304, and the rotary disc 301 is driven to rotate together with the driven wheel at the same angular speed and the same moving direction. Two hall sensors 303 are disposed adjacent to the turntable 301 and distributed along the circumferential direction of the turntable 301 to detect the angular velocity and the moving direction of the turntable 301 when rotating.
Fig. 3 shows only one example of using two hall sensors 303, and it is understood that detecting the motion state of the dial 301 can be accomplished using any number of hall sensors. The more hall sensors that are used, the higher the detection accuracy will be.
In one example, as the turntable 301, which is comprised of magnets, rotates, hall sensors 303, which are adjacent to the turntable 301 and distributed along the circumference of the turntable 301, may generate a corresponding pulse signal as each magnetic pole passes. By detecting the order of occurrence of the pulse signal appearing per unit time and the pulse signals representing the high level and the low level, the angular velocity and the rotational direction of the turntable 301 can be obtained, respectively.
In another example, one or more magnet pieces may be affixed to the dial 301 on an outer surface so that the hall sensor 303 can detect changes in magnetic polarity. When the turntable 301 is rotating, the hall sensors 303 distributed along the circumference of the turntable 301 may generate a corresponding pulse signal when each magnet part passes. By detecting the order of occurrence of the pulse signal appearing per unit time and the pulse signals representing the high level and the low level, the angular velocity and the rotational direction of the turntable 301 can be obtained, respectively.
In another example, the dial 301 may include one or more magnet features inside so that a hall sensor can detect a change in magnetic polarity. When the turntable 301 is rotating, the hall sensors 303 distributed along the circumference of the turntable 301 may generate a corresponding pulse signal when each magnet part passes. By detecting the order of occurrence of the pulse signal appearing per unit time and the pulse signals representing the high level and the low level, the angular velocity and the rotational direction of the turntable 301 can be obtained, respectively.
The state of motion of the driven wheel is determined by detecting the dial 301 using a detection device comprising a hall sensor. Because hall sensor size is little, detects the precision higher for when final testing result is comparatively reliable, detection device's volume is also less, integrates easily on the 3D printer. This would be advantageous compared to solutions using other types of sensors, such as photosensors, since photosensors typically require complex optical systems, such as light sources, gratings, code discs and photosensitive elements, resulting in a complex and bulky detection device.
In a 3D printer, the driven wheel itself may include or be comprised of a magnet, and the at least one sensor includes a hall sensor disposed adjacent the driven wheel to detect the rotational state of the driven wheel, according to some embodiments.
In one example, the driven wheel is comprised of a magnet. When the driven wheel composed of the magnets is driven to rotate by the movement of the material line, the Hall sensors fixed on the periphery of the driven wheel can generate a corresponding pulse signal when each magnetic pole passes through. By detecting the order of occurrence of the pulse signal appearing per unit time and the pulse signals representing the high level and the low level, the angular velocity and the rotational direction of the driven wheel can be obtained, respectively.
In another example, one or more magnet features may be fixed to or embedded in the driven wheel so that a hall sensor can detect a change in magnetic polarity. When the driven wheel is rotating, the hall sensors fixed to the periphery of the driven wheel 301 can generate a corresponding pulse signal when each magnet part passes, and by detecting the sequence of occurrence of the pulse signal occurring per unit time and the pulse signals representing the high level and the low level, the angular speed and the rotating direction of the driven wheel can be obtained respectively.
In this way, the hall sensor can directly detect the rotation state of the driven wheel, rather than detecting the rotation state of the turntable connected to the driven wheel via a shaft. In this case, the rotary shaft 304 and the turntable 301 in fig. 3 are not required, so that the volume of the detection apparatus can be further reduced.
Fig. 4 shows a flowchart of a method 400 for a 3D printer according to an example embodiment of the present disclosure. In this embodiment, the 3D printer to which the method 400 is applied includes a detection device and an extruder. The detection device comprises: the body is arranged in a material guide pipeline of the 3D printer; a driven wheel mounted on the body, wherein the driven wheel is arranged such that when one of the line feeding and the line retracting is performed, the line is pressed against a tread of the driven wheel to rotate the driven wheel; and at least one sensor mounted on the body for detecting a rotational state of the driven wheel. The extruder is separate from the detection device and is configured to drive the strand movement for strand feeding or strand withdrawal. The structure of the 3D printer has already been described in detail above with reference to fig. 1, and therefore, for brevity, the description is not repeated here.
As shown in fig. 4, method 400 includes steps 401 through 403.
In step 401, the rotation state of the driven wheel detected by at least one sensor is acquired. In one example, the sensor may detect the angular velocity of the driven wheel and the direction in which the driven wheel is rotating.
In step 402, based on the rotational state, the linear velocity and rotational direction of the driven wheel is determined. In one example, after the angular velocity of the driven wheel is obtained, a linear velocity of the driven wheel may be obtained based on a radius of the driven wheel.
In step 403, the speed and direction of movement of the strand are determined based on the linear speed and direction of rotation of the driven wheel. In one example, the magnitude of the linear velocity of the driven wheel is the magnitude of the movement velocity of the strand. Referring to the example arrangement of fig. 3, if the direction of rotation of the driven wheel is clockwise, the wire moves from top to bottom; if the rotation direction of the driven wheel is anticlockwise, the stockline moves from bottom to top.
Fig. 5 shows a flowchart of a method 500 for a 3D printer according to another example embodiment of the present disclosure. In this embodiment, the extruder is configured to drive the strand at a first speed. As shown in fig. 5, method 500 includes 501 through 504.
In step 501, the rotational state of the driven wheel detected by at least one sensor is acquired.
In step 502, based on the rotational state, the linear speed and rotational direction of the driven wheel is determined.
In step 503, the speed and direction of movement of the strand are determined based on the direction of rotation of the driven wheel's linear speed.
In step 504, it is determined that the strand is slipping in response to determining that the linear speed of the driven wheel is less than the first speed. When the linear speed of the driven wheel is lower than the preset speed of the extruder, it can be inferred that relative motion exists between the part of the driven wheel, which is in contact with the strand, and the strand, namely, the strand slips.
It should be understood that normally the linear speed of the driven wheel cannot be greater than the preset speed of the extruder. When this occurs, it can be inferred that the 3D printer has failed.
By such a method 500, a stockline slip phenomenon can be accurately and quickly found. This allows the 3D printer or the user to know the operation state of the 3D printer in time, and thus take corresponding measures to reduce the slip phenomenon.
According to some embodiments, in another 3D printer, the detection device further includes a driving wheel for driving the strand in cooperation with the extruder, the driving wheel being arranged opposite the driven wheel with respect to the strand such that the strand is pressed against a tread of the driving wheel to be driven by the driving wheel when the 3D printer performs one of strand feeding and strand withdrawal. The drive wheel is configured to drive the strand to move at a second speed. The detection device of the 3D printer has been described in detail above with reference to fig. 2, and therefore, for the sake of brevity, the description is not repeated here.
In such embodiments, the method 500 may further include: in response to determining that the linear speed of the driven wheel is less than the second speed, it is determined that the wire is slipping. In one example, when the linear speed of the driven wheel is lower than the preset speed of the driving wheel, it can be inferred that there is relative motion between the part of the driven wheel in contact with the strand and the strand, i.e. strand slip has occurred.
In some cases, when controlling the movement of the stockline, it is also necessary to know the position of the stockline at that time in the 3D printer.
According to some embodiments, the method 500 may further comprise: in response to determining that the extruder is driving the strand in motion and that the driven wheel is transitioning from stationary to rotating, determining that the stub bar of the strand is passing the driven wheel. In one example, the 3D printer is performing a feed stock line operation. The driven wheel is stationary before the stockline is fed to the driven wheel, and the stockline rotates the driven wheel when the stockline head is fed to the driven wheel. Thus, it can be determined that the stub bar of the stockline is passing the driven wheel.
Fig. 6 illustrates a block diagram of a detection apparatus 600 of a 3D printer according to an embodiment of the present disclosure. As shown in fig. 6, the detection device 600 includes a body 601, a driven wheel 602, and at least one sensor 603.
The body 601 is configured to be disposed in a guide duct of a 3D printer.
The driven wheel 602 is configured to be mounted on the body, and the driven wheel is arranged such that when the 3D printer performs one of the line feeding and the line retracting, the line presses against a wheel face of the driven wheel to rotate the driven wheel.
At least one sensor 603 is configured to be mounted on the body for detecting a rotational status of the driven wheel, which indicates a state of motion of the stockline.
The driven wheel includes or is formed from a magnet and the at least one sensor includes a hall sensor disposed adjacent the driven wheel to detect a rotational condition of the driven wheel.
Alternatively or additionally, the detection device further comprises a turntable, which is fixedly connected coaxially with the driven wheel, the turntable comprises or consists of a magnet, and the at least one sensor comprises a hall sensor, which is arranged adjacent to the turntable to detect a rotation state of the turntable as a rotation state of the driven wheel.
The detection device has been described in detail above, and therefore, for the sake of brevity, no further description is provided herein.
According to an embodiment of the present disclosure, there is also provided a non-transitory computer readable storage medium having stored thereon instructions which, when executed by the processor 103 of the 3D printer 100, implement the steps of any one of the methods as in any one of the embodiments of the present disclosure.
There is also provided, according to an embodiment of the present disclosure, a computer program product comprising instructions which, when executed by the processor 103 of the 3D printer 100, implement the steps of the method as in any one of the embodiments of the present disclosure.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present disclosure may be performed in parallel, sequentially or in different orders, and are not limited herein as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved.
It will be understood that in this specification, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like, indicate an orientation or positional relationship or dimension based on that shown in the drawings, which terms are used for convenience of description only and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered limiting to the scope of the disclosure.
In the present disclosure, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
This description provides many different embodiments or examples that can be used to implement the present disclosure. It should be understood that these various embodiments or examples are purely exemplary and are not intended to limit the scope of the disclosure in any way. Those skilled in the art can conceive of various changes or substitutions based on the disclosure of the specification of the present disclosure, which are intended to be included within the scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope defined by the appended claims.
Claims (12)
1. A 3D printer, comprising:
a detection device, the detection device comprising:
the body is arranged in a material guide pipeline of the 3D printer;
a driven wheel mounted on the body, wherein the driven wheel is arranged such that when one of a line feed and a line retreat is performed, a line is pressed against a tread of the driven wheel to rotate the driven wheel; and
at least one sensor mounted on the body for detecting a rotational state of the driven wheel;
an extruder, separate from the detection device, configured to drive the strand to move for strand feeding or strand withdrawal; and
a processor configured to execute instructions to determine a state of motion of the strand based on a state of rotation of the driven wheel.
2. The 3D printer according to claim 1,
wherein the driven wheel comprises or consists of a magnet, and
wherein the at least one sensor comprises a Hall sensor disposed adjacent the driven wheel to detect a rotational condition of the driven wheel.
3. The 3D printer of claim 1, wherein the detection device further comprises a turntable, the turntable being fixedly connected coaxially with the driven wheel,
wherein the turntable comprises or consists of a magnet, and
wherein the at least one sensor includes a hall sensor disposed adjacent to the turntable to detect a rotational state of the turntable as a rotational state of the driven wheel.
4. The 3D printer of any one of claims 1 to 3, wherein the driven wheel is a first driven wheel, and wherein the detection device further comprises a second driven wheel including or consisting of a bearing, the second driven wheel being disposed opposite the first driven wheel with respect to the stock line such that when the 3D printer performs one of stock line feeding and stock line retracting, the stock line presses against a tread of the second driven wheel to rotate the second driven wheel.
5. The 3D printer of any one of claims 1 to 3, wherein the detection device further comprises a drive wheel for driving the strand in cooperation with the extruder, wherein the drive wheel is arranged opposite the driven wheel with respect to the strand such that the strand is pressed against a tread of the drive wheel to be driven by the drive wheel when the 3D printer performs one of strand feeding and strand withdrawal.
6. A method for a 3D printer, wherein the 3D printer comprises a detection device and an extruder, the detection device comprising: the body is arranged in a material guide pipeline of the 3D printer; a driven wheel mounted on the body, wherein the driven wheel is arranged such that when one of a line feed and a line retreat is performed, a line is pressed against a tread of the driven wheel to rotate the driven wheel; and at least one sensor mounted on the body for detecting a rotational state of the driven wheel, the extruder being separate from the detection device and configured to drive movement of the strand for strand feeding or strand withdrawal, the method comprising:
acquiring a rotation state of the driven wheel detected by the at least one sensor;
determining a linear speed and a rotational direction of the driven wheel based on the rotational state; and
and determining the movement speed and the movement direction of the stockline based on the linear speed and the rotation direction of the driven wheel.
7. The method of claim 6, wherein the extruder is configured to drive the strand at a first speed of movement, and wherein the method further comprises:
determining that the strand is slipping in response to determining that the linear speed of the driven wheel is less than the first speed.
8. The method of claim 6, wherein the detection device further comprises a drive wheel for driving the strand in cooperation with the extruder, wherein the drive wheel is arranged opposite the driven wheel with respect to the strand such that when the 3D printer performs one of strand feeding and strand withdrawal, the strand is pressed against a tread of the drive wheel to be driven by the drive wheel, wherein the drive wheel is configured to drive the strand to move at a second speed, and wherein the method further comprises:
determining that slippage of the wire occurs in response to determining that the linear speed of the driven wheel is less than the second speed.
9. The method of claim 6, further comprising:
in response to determining that the extruder is driving the strand in motion and that the driven wheel is transitioning from stationary to rotating, determining that a stub bar of the strand is passing the driven wheel.
10. A detection apparatus for a 3D printer, comprising:
the body is arranged in a material guide pipeline of the 3D printer;
a driven wheel mounted on the body, wherein the driven wheel is arranged such that when the 3D printer performs one of a line feed and a line retraction, a line presses against a wheel face of the driven wheel to rotate the driven wheel; and
at least one sensor mounted on the body for detecting a rotational state of the driven wheel, wherein the rotational state of the driven wheel indicates a movement state of the stockline,
wherein the driven wheel includes or is comprised of a magnet and the at least one sensor includes a Hall sensor disposed adjacent the driven wheel to detect a rotational condition of the driven wheel, or
Wherein the detection device further comprises a turntable, the turntable is coaxially and fixedly connected with the driven wheel, the turntable comprises a magnet or is composed of a magnet, and the at least one sensor comprises a hall sensor, the hall sensor is arranged adjacent to the turntable to detect the rotation state of the turntable as the rotation state of the driven wheel.
11. A non-transitory computer readable storage medium having stored thereon instructions that, when executed by a processor of the 3D printer of claim 1, cause the 3D printer to perform the method of any one of claims 6-9.
12. A computer program product comprising instructions which, when executed by a processor of the 3D printer of claim 1, cause the 3D printer to perform the method of any one of claims 6-9.
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