CN217862834U - Leveling device and 3D printer - Google Patents
Leveling device and 3D printer Download PDFInfo
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- CN217862834U CN217862834U CN202220245401.3U CN202220245401U CN217862834U CN 217862834 U CN217862834 U CN 217862834U CN 202220245401 U CN202220245401 U CN 202220245401U CN 217862834 U CN217862834 U CN 217862834U
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- 238000010521 absorption reaction Methods 0.000 description 3
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- 238000010146 3D printing Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The utility model discloses a levelling device and 3D printer is mainly through setting up probe and determine module, and determine module realizes acquireing the actual height of check point on the print platform through the detection to probe touching print platform, guarantees the effective spraying of nozzle. The utility model discloses technical scheme: a leveling device includes: a sliding hole is formed in the base, and the probe is movably connected in the sliding hole in a penetrating manner; the detection assembly is connected with the base; the driving part is arranged on the base and used for driving the probe to slide in the sliding hole along the direction vertical to the printing platform, and the position of the probe comprises a detection position close to the printing platform; the probe is used for touching the printing platform so as to push the probe to move relative to the base towards the direction away from the printing platform, and when the probe is separated from the detection position, the probe enables the detection assembly to be changed from the first electrical state to the second electrical state. The utility model discloses mainly used 3D printer's leveling.
Description
Technical Field
The utility model relates to a 3D prints technical field, especially relates to a levelling device and 3D printer.
Background
In common hot melt lamination type 3D printer, the leading truck drives and beats printer head and descend to predetermineeing the position, and the nozzle forms the first layer of printing the product according to the cross sectional shape scanning formula of product to the spraying material of print platform selectivity after the material cooling, and the leading truck and then drive and beat printer head one deck that rises, carries out the printing on second floor on the basis of first layer, and the successive layer is accumulated and is realized three-dimensional printing.
Where the formation of the first layer of the printed product is important, it requires precise distance of the nozzles from the upper surface of the printing platform, and the printing platform is horizontal. However, print platform has certain flatness tolerance, and receive factors such as temperature and live time to influence in addition, there is not the deformation of equidimension print platform surface, make the unevenness phenomenon appear on print platform surface, drop to predetermineeing the position all the time at the spraying in-process like the nozzle, the nozzle changes at the spraying in-process with the distance of print platform upper surface, it is inhomogeneous to lead to the bonding force of the first layer on print platform of product, the stability of product printing in-process is not good, the product slope can cause the printing distortion.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a leveling device and 3D printer is mainly through setting up probe and determine module, and determine module realizes acquireing the actual height of check point on the print platform through the detection to probe touching print platform, guarantees the effective spraying of nozzle.
In order to achieve the above object, the present invention mainly provides the following technical solutions:
in one aspect, the embodiment of the utility model provides a leveling device is applied to 3D printer to a print platform for to the 3D printer carries out the leveling, and leveling device includes:
the base is provided with a sliding hole;
the probe is movably connected in the sliding hole in a penetrating manner;
the detection assembly is connected with the base;
the driving piece is arranged on the base and used for driving the probe to slide in the sliding hole along the direction vertical to the printing platform, and the position of the probe comprises a detection position close to the printing platform;
the probe is used for touching the printing platform so as to push the probe to move relative to the base towards the direction away from the printing platform, and when the probe is separated from the detection position, the probe enables the detection assembly to be changed from the first electrical state to the second electrical state.
Wherein, the driving piece includes solenoid, is provided with magnetism on the probe and inhales the piece, and magnetism is inhaled the one end that the piece setting was kept away from print platform at the probe, and solenoid is used for inhaling the piece through magnetism and drives the probe and remove.
The detection assembly comprises a first conductive part and a second conductive part, and the first conductive part and the second conductive part are both connected with the base;
when the probe is at the detection position, the magnetic attraction piece is abutted against the first conductive part and the second conductive part so as to enable the first conductive part and the second conductive part to be electrically conducted; or the probe presses the first conductive part to make the first conductive part and the second conductive part electrically conducted;
when the probe touches the printing platform, the probe and the magnetic part move in a direction away from the printing platform, the second conductive part is separated from the magnetic part and/or the first conductive part, and the first conductive part and the second conductive part are electrically disconnected.
The first conductive part is a conductive elastic sheet, and the second conductive part is a conductive column;
the first end of the conductive elastic sheet and the first end of the conductive column are both connected with the base, the second end of the conductive elastic sheet can bounce, when the probe is at a detection position, the second end of the conductive elastic sheet is connected with the magnetic suction piece in an adsorption manner, the second end of the conductive column is abutted against the magnetic suction piece, and the conductive elastic sheet is electrically conducted with the conductive column through the magnetic suction piece; or the like, or, alternatively,
the conductive elastic sheet is pressed by the probe so that the conductive elastic sheet is contacted with the conductive column.
The base comprises a telescopic cylinder and a control substrate, and the telescopic cylinder is connected with the control substrate;
a sliding hole is formed in the telescopic cylinder and is a through hole, the electromagnetic coil is wound on the outer wall of one end of the telescopic cylinder, which is far away from the printing platform, and the electromagnetic coil is electrically connected with the control substrate;
one side of the telescopic cylinder, which is opposite to the control substrate, is provided with a first penetrating interface and a second penetrating interface, the first end of the first conductive part and the first end of the second conductive part are both connected with the control substrate, the second end of the first conductive part extends into the sliding hole through the first penetrating interface, the first conductive part can move at the first penetrating interface, and the second end of the second conductive part extends into the sliding hole through the second penetrating interface.
The control substrate is provided with a socket on one side opposite to the telescopic cylinder, the socket is respectively electrically connected with the electromagnetic coil, the first conductive part and the second conductive part, and the socket is used for connecting a controller of the 3D printer so as to supply power to the electromagnetic coil and detect the electric conduction state of the conductive elastic sheet and the conductive column;
when the probe is at the detection position, the probe is contacted with the detection assembly so as to enable the detection assembly to be in a first electrical state.
Wherein, the detection subassembly includes the elastic strain gauge, and the elastic strain gauge is connected with the base, and when the probe was in the detection position, magnetism was inhaled piece and elastic strain gauge butt, and when the probe touched print platform, magnetism was inhaled the piece and is aroused the elastic strain gauge and take place deformation.
The position of the probe also comprises a storage position far away from the printing platform;
one end of the sliding hole, which is close to the printing platform, is provided with an opening, one side of the sliding hole, which is opposite to the opening, is provided with an adsorption part, and when the probe is positioned at a storage position, the magnetic adsorption part and the adsorption part are mutually attracted to keep the relative position of the probe and the opening;
the magnetic suction piece protrudes out of the side wall of the probe, the inner wall of the sliding hole comprises a boss, and the boss is used for being abutted to the magnetic suction piece so that the probe is located at a detection position, or, at least part of the probe is located in the sliding hole.
On the other hand, the embodiment of the utility model provides a 3D printer still provides, include the leveling device as above-mentioned any one.
The 3D printer further includes: the printing device comprises a guide assembly, a printing head assembly, a printing platform and a printer base;
the guide assembly is connected with the printer base, the printing platform and the printing head assembly are both connected with the guide assembly, and the leveling device is connected with the printing head assembly;
the guide assembly is used for driving the printing head assembly and the printing platform to move so that the leveling device sequentially corresponds to a plurality of preset detection points on the printing platform, and the leveling device is used for leveling detection at the plurality of detection points respectively.
The embodiment of the utility model provides a leveling device and 3D printer, through the detection of determine module to probe touching print platform, realize acquireing the actual height of check point on the print platform, guarantee the effective spraying of nozzle. Among the prior art, print platform surface roughness, the nozzle falls to predetermineeing the position all the time at the spraying in-process, and the distance of nozzle and print platform upper surface changes at the spraying in-process, and the bonding dynamics that will lead to the first layer of product on print platform is inhomogeneous, and the stability of product printing in-process is not good. Compared with the prior art, in this application file, it can move to set up the base relatively of probe, the driving piece produces thrust to the probe in order to stretch out the base, descend as whole levelling device, so that when the probe arrived touching print platform, the probe atress produced the disturbance, the probe produces the displacement in the direction of thrust back to the back, when detecting element becomes the second electrical property state by first electrical property state, can confirm that the probe touched print platform, thereby can be used for the leveling, height when 3D printer record probe touches print platform is touched at different positions, and then obtain print platform's the surperficial actual height profile of platform, in the printing process, the nozzle carries out the adjustment of the spraying height of nozzle according to print platform's height, make the nozzle spraying in-process keep unanimous height apart from print platform, guarantee to print model first layer and print platform even bonding.
Drawings
Fig. 1 is a schematic perspective view of a leveling device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a leveling device provided in an embodiment of the present invention at a first viewing angle;
fig. 3 is an exploded schematic view of a leveling device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a leveling device part according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a telescopic cylinder and a probe in a leveling device according to an embodiment of the present invention at a second viewing angle;
fig. 6 is a schematic structural diagram of a leveling device at a second viewing angle when the probe is in the storage position according to an embodiment of the present invention;
FIG. 7 isbase:Sub>A schematic cross-sectional view of the leveling device shown in FIG. 6 in the direction A-A;
fig. 8 is a schematic structural diagram of a leveling device at a second viewing angle when the probe is at the detection position according to an embodiment of the present invention;
fig. 9 is a schematic cross-sectional view of the leveling device shown in fig. 8 in the direction B-B.
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the objectives of the present invention, the following detailed description will be made in conjunction with the accompanying drawings and preferred embodiments of the present invention with reference to the following detailed description of the embodiments, structures, features and effects of the leveling device and the 3D printer.
On the one hand, as shown in fig. 1-9, the embodiment of the utility model provides a leveling device is applied to the 3D printer to be used for carrying out the leveling to the print platform of 3D printer, leveling device includes:
a base 10, wherein a sliding hole 20 is arranged on the base 10;
the probe 40 is movably connected in the sliding hole 20 in a penetrating manner;
the detection assembly 60, the detection assembly 60 is connected with the base 10;
a driving member 30, the driving member 30 being disposed on the base 10, the driving member 30 being configured to drive the probe 40 to slide in the sliding hole 20 in a direction perpendicular to the printing platform, the position of the probe 40 including a detection position close to the printing platform;
the probe 40 is used for touching the printing platform to push the probe 40 to move away from the printing platform relative to the base 10, so that when the detection position is released, the probe 40 changes the detection assembly 60 from the first electrical state to the second electrical state.
Wherein, the 3D printer includes print platform, X axle leading truck, Y axle leading truck, Z axle leading truck, printhead assembly and base, print platform passes through Y axle leading truck to be installed on the base, Z axle leading truck erects in the print platform both sides, X axle leading truck both ends and Z axle leading truck sliding connection, printhead assembly is connected with X axle leading truck, printhead assembly erects in the print platform top through X axle leading truck and Z axle leading truck, the printing in-process, the leading truck drives printhead assembly and print platform relative movement, in order to carry out the successive layer spraying of printing material. A leveling device is mounted on the printhead assembly for leveling detection prior to printing, in order to obtain the actual height of the printhead when the probe 40 contacts the printing platform. Specifically, the driving member 30 drives the probe 40 to move in the vertical direction to switch between the storage position and the detection position, and the probe 40 is closer to the printing platform at the detection position. Wherein in the testing position, the height of the probe 40 is below the printhead assembly; in the stowed position, the probe 40 is at a higher elevation than the printhead assembly so that the leveling device does not interfere with printing. Specifically, when leveling detection is performed before printing starts, the driving member 30 drives the probe 40 to move to a detection position in a direction towards the printing platform, the bottom end of the probe 40 is closer to the printing platform than the bottom end of a nozzle of the printing head, the X-axis guide frame drives the leveling device to move towards the printing platform, until the probe 40 touches the printing platform, the probe 40 is pushed by the printing platform to change a relative position with the base 10, so that the detection assembly 60 is changed from a first electrical state to a second electrical state, and when the detection assembly 60 detects the change of the electrical state, the actual height of the printing head assembly is recorded, namely, the height of the printing head assembly relative to a zero point at the moment, and then the actual height of the printing platform is obtained. The method comprises the steps of uniformly arranging a plurality of detection points on a printing platform, and executing the leveling detection process by using each detection point respectively to further obtain the actual height of the printing platform at each detection point, namely obtaining the profile information of the surface of the printing platform, namely the height information of the profile. In the printing process, the printing height of the printing head is adjusted according to the profile height information of the surface of the printing platform, for example, the printing head is lifted at the higher convex position of the printing platform, and the printing head is lowered at the lower concave position of the printing platform, so that the nozzle of the printing head and the upper surface of the printing platform are always kept at a constant height.
It is understood that the 3D printer may be other types of printers, and the leveling device of the present application is also within the protection scope of the present application.
Wherein, in the detecting position, the probe 40 contacts the detecting element 60 to make the detecting element 60 in the first electrical state. The probe 40 may or may not apply a force to the sensing assembly 60 when the probe 40 and the sensing assembly 60 are in contact.
The driving means 30 may be driven in various ways, and it is intended to make the probe 40 stretch and contract to switch between the detection position and the storage position, for example, the driving means 30 may apply a force continuously acting on the probe 40, and the position of the probe 40 is switched by changing the direction of the force; alternatively, the driver 30 may apply a force to move the probe 40 upward only when the probe 40 changes from the detection position to the storage position, and may not apply a force when the probe 40 changes from the storage position to the detection position, and the probe 40 may fall to the detection position only by gravity.
The detecting element 60 is connected to a main controller of the 3D printer, such as a main control chip, when the probe 40 is located at the accommodating position, the probe 40 is not in contact with the detecting element 60, and when the probe 40 is located at the detecting position, the probe 40 is in contact with the detecting element 60, so that the electrical state of the detecting element 60 is changed by the movement of the probe 40, and whether the probe 40 touches the printing platform is detected. Specifically, when the probe 40 touches the printing platform, the probe 40 moves relative to the detection assembly 60, the detection assembly 60 changes from the first electrical state to the second electrical state under the influence of the probe 40, the main controller determines that the probe 40 touches the printing platform, and then the main controller of the 3D printer records the height of the X-axis guide frame at the moment so as to realize leveling detection. The first electrical state and the second electrical state of the detecting element 60 can be in various forms, such as the first electrical state being an on state and the second electrical state being an off state, or the first electrical state and the second electrical state being different electrical signal intensities, and several embodiments of the detecting element 60 will be described in detail below.
The embodiment of the utility model provides a leveling device and 3D printer, through the detection of determine module to probe touching print platform, realize acquireing the actual height of check point on the print platform, guarantee the effective spraying of nozzle. Among the prior art, print platform surface roughness, the nozzle falls to predetermineeing the position all the time at the spraying in-process, and the distance of nozzle and print platform upper surface changes at the spraying in-process, and the bonding dynamics that will lead to the first layer of product on print platform is inhomogeneous, and the stability of product printing in-process is not good. Compared with the prior art, in this application file, it can move to set up the base relatively of probe, the driving piece produces thrust to the probe in order to stretch out the base, descend as whole levelling device, so that when the probe arrived touching print platform, the probe atress produced the disturbance, the probe produces the displacement in the direction of thrust back to the back, when detecting element becomes the second electrical property state by first electrical property state, can confirm that the probe touched print platform, thereby can be used for the leveling, height when 3D printer record probe touches print platform is touched at different positions, and then obtain print platform's the surperficial actual height profile of platform, in the printing process, the nozzle carries out the adjustment of the spraying height of nozzle according to print platform's height, make the nozzle spraying in-process keep unanimous height apart from print platform, guarantee to print model first layer and print platform even bonding.
The manner of driving the probe 40 by the driving member 30 can be various, and one of the specific manners is as follows:
the driving member 30 includes an electromagnetic coil, a magnetic attraction member 50 is disposed on the probe 40, the magnetic attraction member 50 is disposed at an end of the probe 40 away from the printing platform, and the electromagnetic coil is configured to drive the probe 40 to move through the magnetic attraction member 50.
The top of probe 40 is connected with magnetism and inhales piece 50, and magnetism is inhaled piece 50 and solenoid and is the conductive coil and the magnet iron core that can mutually support, and probe 40 is inhaled the one end activity of piece 50 by magnetism and is pegged graft in sliding hole 20, and solenoid can set up in the outside or inside of base 10, and solenoid is used for inhaling the effort that piece 50 applyed different directions through changing the circular telegram current direction to magnetism to make magnetism inhale that piece 50 drives probe 40 and remove. Specifically, before the printing begins, solenoid is circular telegram on the first direction, and solenoid exerts the effort of rebound to magnetism piece 50, and magnetism piece 50 drives probe 40 rebound and is close to opening 21 to the bottom of probe 40, and the bottom of probe 40 is higher than the bottom of the nozzle of beating the head assembly, and the probe is in the position of accomodating promptly, guarantees that probe 40 can not influence the normal printing of beating the head assembly. When leveling detection is needed, the electromagnetic coil is electrified in the second direction, the electromagnetic coil applies acting force moving downwards to the magnetic attraction piece 50, the magnetic attraction piece 50 drives the probe 40 to move downwards to the bottom end of the probe 40 and far away from the opening 21, the bottom end of the probe 40 is lower than the bottom end of a nozzle of the printing head assembly, namely the probe is located at a detection position, so that when the X-axis guide frame descends, the bottom end of the probe 40 contacts the printing platform, and leveling detection is finally achieved.
Taking the first and second electrical states as the on and off states, for example, the detecting element 60 can be of the following form:
the detection member 60 includes a first conductive portion 61 and a second conductive portion 62, and the first conductive portion 61 and the second conductive portion 62 are connected to the base 10. When the probe 40 is at the detection position, the magnetically attracting member 50 abuts against the first conductive part 61 and the second conductive part 62 to electrically connect the first conductive part 61 and the second conductive part 62; alternatively, the probe 40 presses the first conductive portion 61 to electrically connect the first conductive portion 61 and the second conductive portion 62. When the probe 40 touches the printing platform, the probe 40 and the magnetic element 50 move in a direction away from the printing platform, the second conductive part 62 is separated from the magnetic element 50 and/or the first conductive part 61, and the first conductive part 61 and the second conductive part 62 are electrically disconnected.
When the probe 40 is in the detecting position, the electromagnetic coil can apply a downward moving pushing force to the probe 40 through the magnetic attraction member 50, or the electromagnetic coil does not apply a force to the probe 40, and the probe 40 is held in the detecting position only by gravity. When the probe 40 touches the printing platform, the printing platform applies an upward acting force to the probe 40, and pushes the probe 40 to move upward, thereby changing the electrical conduction state of the first conductive part 61 and the second conductive part 62.
The first conductive part 61 and the second conductive part 62 are electrically conducted in two ways, namely, electrically conducted by the magnetic attraction 50 and electrically conducted by direct contact:
one, the magnetic element 50 is an electrical conductor, when the probe 40 is at the detection position, the first conductive part 61 and the second conductive part 62 are both abutted to the magnetic element 50, and electrically connected to each other through the magnetic element 50, when the magnetic element 50 moves relative to the base 10, the magnetic element 50 is separated from at least one of the first conductive part 61 and the second conductive part 62, and the electrically connected state of the first conductive part 61 and the second conductive part 62 is interrupted, and the master controller of the 3D printer can monitor whether the probe 40 touches the printing platform by monitoring the electrically connected state of the first conductive part 61 and the second conductive part 62, so as to realize leveling detection. When the probe 40 is separated from the printing platform to perform the leveling detection of the next detection point, the probe 40 falls down to the magnetic attraction piece 50 to abut against the first conductive part 61 and the second conductive part 62 again, so that the first conductive part 61 and the second conductive part 62 are electrically conducted, and the next detection is performed. The main controller of the 3D printer records the actual height of the X-shaped guide frame when the first conductive part 61 and the second conductive part 62 are disconnected at each detection point, and then the surface profile height of the printing platform is obtained.
Secondly, when the probe 40 is at the detection position, the probe 40 and/or the magnetic element 50 abuts against the first conductive part 61, and presses the first conductive part 61 to move to be in direct contact with the second conductive part 62, so that the first conductive part 61 and the second conductive part 62 are electrically conducted, when the probe 40 touches the printing platform and moves upwards, the acting force pressing the first conductive part 61 is reduced, so that the first conductive part 61 rebounds, and further breaks away from the second conductive part 62, and the electrically conducting state of the first conductive part 61 and the second conductive part 62 is interrupted, so that the touch detection of the printing platform is realized according to the electrically conducting state of the first conductive part 61 and the second conductive part 62.
In one embodiment, as shown in fig. 4, the first conductive portion 61 is a conductive elastic sheet, and the second conductive portion 62 is a conductive column. The first end of electrically conductive shell fragment and the first end of leading electrical pillar all are connected with base 10, and the second end of electrically conductive shell fragment can be flicked, and when probe 40 was in the detection position, the second end of electrically conductive shell fragment was inhaled with magnetism and is inhaled a 50 and be connected, and the second end of leading electrical pillar inhales a 50 butt with magnetism, and electrically conductive shell fragment is inhaled a 50 and is led electrical conductance through magnetism, or, electrically conductive shell fragment is oppressed by probe 40 to make electrically conductive shell fragment and lead electrical pillar contact.
Magnetism is inhaled piece 50 and is cylindrically, electrically conductive shell fragment is formed by conducting strip buckling downwards, it is the column conductor to lead electrical pillar, it sets up between piece 50 and opening 21 to lead electrical pillar, first conductive part 61 and second conductive part 62 are inhaled through magnetism under the mode of piece 50 electric conductance, when probe 40 is in the detection position, inhale the bottom of piece 50 and lead electrical pillar butt, the second end of electrically conductive shell fragment is the suspension end butt of electrically conductive shell fragment promptly on the arc lateral wall of piece 50 is inhaled to magnetism, when probe 40 is in the rebound under print platform's promotion, the bottom of piece 50 is inhaled with leading electrical pillar and break away from to magnetism, because the suspension end of electrically conductive shell fragment can bounce, and magnetism is inhaled piece 50 and is had the magnetic adsorption power to the suspension end of electrically conductive shell fragment, make the suspension end of electrically conductive shell fragment inhale piece 50 butt with magnetism all the time. The conductive elastic sheet is always abutted to the magnetic attraction piece 50, so that the on-off of the conductive elastic sheet and the conductive column only depends on the contact relation between the magnetic attraction piece 50 and the conductive column, the position of the magnetic attraction piece 50 becomes the only factor influencing the on-off, and the detection error caused by the contact position deviation between the magnetic attraction piece 50 and the first conductive part 61 and the second conductive part 62 is avoided. Specifically, if the first conductive portion 61 and the second conductive portion 62 are conductive columns, the magnetic element 50 needs to be in contact with the first conductive portion 61 and the second conductive portion 62 at the same time, which requires that the bottom end of the magnetic element 50 is horizontal enough, and if the bottom end of the magnetic element 50 is worn, the magnetic element 50 cannot be in contact with the first conductive portion 61 and the second conductive portion 62 at the same time when the magnetic element does not touch the printing platform, so that the first conductive portion 61 and the second conductive portion 62 cannot be electrically connected, and the detection result is affected. In addition, magnetism is inhaled piece 50 and is led the mode of electrical shrapnel and lead electrical pillar butt for probe 40 moves down, when being in the critical position that touches print platform and having displacement slightly, can promote magnetism to inhale piece 50 and break away from and lead electrical pillar, and then makes electrically conductive shrapnel and lead the electrical disconnection, realizes the sensitivity that detects, makes the testing result more accurate.
It can be understood that the leveling device of the present application can change the detecting element 60 from the first electrical state to the second electrical state when the probe 40 just touches the printing platform; alternatively, the leveling device may continue to move toward the printing platform just after the probe 40 touches the printing platform, and the detection assembly 60 is changed from the first electrical state to the second electrical state after the probe 40 is moved a distance, i.e., after the probe 40 is pushed by the printing platform a distance. Even if the probe 40 is pushed a distance by the printing platform, the detecting component 60 is changed from the first electrical state to the second electrical state, the changing position of the electrical state is related to the position of the probe 40, and the position of the probe 40 is uniform, so that the precision of the leveling device is not affected.
Under the mode that first conductive part 61 and second conductive part 62 direct contact electric conductance are switched, when probe 40 switches to the detection position at the storage position, probe 40 moves down, probe 40 and magnetism inhale piece 50 wherein arbitrary and electrically conductive shell fragment butt to oppress the end of springing of electrically conductive shell fragment and move down and lead electrical pillar contact, when probe 40 removed because of touching print platform, probe 40 reduced the oppression power to electrically conductive shell fragment, electrically conductive shell fragment is because self elastic action kick-backs, electrically conductive shell fragment and lead electrical pillar disconnection.
In one embodiment, as shown in fig. 3 and 5, the base 10 includes a telescopic cylinder 11 and a control substrate 12, and the telescopic cylinder 11 is connected to the control substrate 12. Set up sliding hole 20 in the telescopic tube 11, sliding hole 20 is the through-hole, and solenoid coils winds in the outer wall of telescopic tube 11 the one end of keeping away from print platform, and solenoid is connected with control substrate 12 electricity. One side of telescopic cylinder 11 for control substrate 12 is provided with first interface 111 and second and passes interface 112, and the first end of electrically conductive shell fragment and the first end of leading electrical pillar all are connected with control substrate 12, and the second end of electrically conductive shell fragment stretches into sliding hole 20 through first interface 111 that passes, and electrically conductive shell fragment can move at first interface 111 that passes, and the second end of leading electrical pillar passes through second interface 112 and stretches into sliding hole 20.
The axial section of the telescopic cylinder 11 is approximately semicircular, and the telescopic cylinder 11 comprises a plane side wall and a cambered surface side wall which are connected, and the plane side wall and the cambered surface side wall enclose a sliding hole 20. First wearing mouth 111 and second wearing mouth 112 all set up on the plane lateral wall, and first wearing mouth 111 is rectangular shape hole, provides the space for the bullet of electrically conductive shell fragment, and second wearing mouth 112 is the circular port. Still be provided with on the cambered surface lateral wall of telescopic cylinder 11 and dodge hole 113 corresponding with second interface 112, it pegs graft in dodging hole 113 after stretching into sliding hole 20 by second interface 112 to lead electrical pillar for lead electrical pillar and run through sliding hole 20, guarantee sliding hole 20 and magnetism and inhale the butt of piece 50.
In one embodiment, a socket 121 is disposed on a side of the control substrate 12 opposite to the telescopic cylinder 11, the socket 121 is electrically connected to the electromagnetic coil, the conductive elastic sheet and the conductive pillar, respectively, and the socket 121 is used for connecting a controller to supply power to the electromagnetic coil and detect an electrical conduction state of the conductive elastic sheet and the conductive pillar.
The first electrical state and the second electrical state can be an on state and an off state, and can also be changes such as the intensity of an electrical signal, for example, in another embodiment, the detecting assembly 60 can also be an elastic strain gauge connected to the base 10, when the probe 40 is located at the detecting position, the magnetic attraction member 50 abuts against the elastic strain gauge, and when the probe 40 touches the printing platform, the magnetic attraction member 50 causes the elastic strain gauge to deform.
When probe 40 is in the detection position, magnetism is inhaled piece 50 and is moved the elastic strain gauge through the pressure for the elastic strain gauge produces the deformation of certain degree, and the elastic strain gauge becomes the detection state of buckling by natural state, and when probe 40 removed because of touching print platform, the elastic strain gauge recovered to natural state, makes the elastic strain gauge take place deformation and then produces the change of signal of telecommunication power, and the master controller detects this signal of telecommunication of elastic strain gauge and then realizes probe 40 touching print platform's detection.
In one embodiment, the position of the probe 40 further includes a storage position far away from the printing platform, one end of the sliding hole 20 close to the printing platform is an opening 21, one side of the sliding hole 20 opposite to the opening 21 is provided with an absorption member 70, and when the probe 40 is in the storage position, the magnetic absorption member 50 and the absorption member 70 attract each other to maintain the relative position of the probe 40 and the opening 21.
The magnetic element 50 protrudes from a sidewall of the probe 40, and an inner wall of the sliding hole 20 includes a protrusion 22, and the protrusion 22 is configured to abut against the magnetic element 50, so as to position the probe 40 at the detecting position, or, so as to position the probe 40 at least partially in the sliding hole 20.
The diameter of the magnetic element 50 is larger than the diameter of the probe 40, so that the bottom end of the magnetic element 50 abuts against the boss 22. The boss 22 has two functions, one is that, in the installation process, the boss 22 prevents the magnetic attraction piece 50 and the probe 40 from sliding out of the sliding hole 20, specifically, in the installation process, the magnetic attraction piece 50 and the probe 40 are placed into the sliding hole 20 from an opening above the sliding hole 20, the probe 40 falls to the position where the magnetic attraction piece 50 abuts against the boss 22 due to gravity, a jackscrew is placed into the sliding hole 20, the probe 40 is pushed upwards by the bottom end of the probe 40, the conductive elastic sheet and the conductive column are inserted through the first penetrating port 111 and the second penetrating port 112, the conductive column is inserted between the magnetic attraction piece 50 and the boss 22, the pushing force is removed, the magnetic attraction piece 50 falls onto the telescopic cylinder 11 due to gravity, and finally the control substrate 12 is installed on the telescopic cylinder 11; secondly, when the detecting element 60 is a structure such as an elastic strain gauge that cannot support the magnetic element 50 from the bottom of the magnetic element 50, the boss 22 serves to balance the repulsive force of the electromagnetic coil, so that the probe 40 is kept at the detecting position.
On the other hand, the embodiment of the utility model provides a still provide a 3D printer, include the levelling device as above-mentioned arbitrary, including the advantage of the levelling device of above-mentioned arbitrary, no longer describe here.
The 3D printer further comprises a guide assembly, a printing head assembly, a printing platform and a printer base. The direction subassembly is connected with the printer base, and print platform and beat printer head assembly and all be connected with the direction subassembly, and levelling device is connected with beating printer head assembly. The guide assembly is used for driving the printing head assembly and the printing platform to move so that the leveling device sequentially corresponds to a plurality of preset detection points on the printing platform, and the leveling device is used for leveling detection at the plurality of detection points respectively.
The detection points can be 25 detection points distributed on the printing platform, and the 25 detection points are uniformly distributed in five rows and five columns so as to realize the detection of the whole contour of the upper surface of the printing platform.
The technical scheme of the utility model as follows:
in one aspect, the embodiment of the utility model provides a leveling device is applied to the 3D printer to carry out the leveling to the print platform of 3D printer, leveling device includes:
a base 10, wherein a sliding hole 20 is arranged on the base 10;
the probe 40, the probe 40 is movably connected in the sliding hole 20 in a penetrating way;
the detection assembly 60, the detection assembly 60 is connected with the base 10;
a driving member 30, the driving member 30 being disposed on the base 10, the driving member being configured to drive the probe 40 to slide in the sliding hole 20 in a direction perpendicular to the printing platform, the position of the probe 40 including a detection position close to the printing platform;
the probe 40 is used for touching the printing platform to push the probe 40 to move away from the printing platform relative to the base 10, so that when the probe 40 is separated from the detection position, the detection assembly 60 is changed from the first electrical state to the second electrical state by the probe 40.
The driving member 30 includes an electromagnetic coil, the probe 40 is provided with a magnetic attraction member 50, the magnetic attraction member 50 is disposed at an end of the probe 40 away from the printing platform, and the electromagnetic coil is used for driving the probe 40 to move through the magnetic attraction member 50.
The detection assembly 60 includes a first conductive part 61 and a second conductive part 62, and both the first conductive part 61 and the second conductive part 62 are connected to the base 10;
when the probe 40 is at the detection position, the magnetically attracting member 50 abuts against the first conductive part 61 and the second conductive part 62 to electrically connect the first conductive part 61 and the second conductive part 62; or the probe 40 presses the first conductive part 61 to electrically connect the first conductive part 61 and the second conductive part 62;
when the probe 40 touches the printing platform, the probe 40 and the magnetic element 50 move away from the printing platform, the second conductive part 62 is separated from the magnetic element 50 and/or the first conductive part 61, and the first conductive part 61 and the second conductive part 62 are electrically disconnected.
Wherein, the first conductive part 61 is a conductive elastic sheet, and the second conductive part 62 is a conductive column;
the first end of the conductive elastic sheet and the first end of the conductive column are both connected with the base 10, the second end of the conductive elastic sheet can be bounced, when the probe 40 is at the detection position, the second end of the conductive elastic sheet is connected with the magnetic attraction piece 50 in an adsorption manner, the second end of the conductive column is abutted against the magnetic attraction piece 50, and the conductive elastic sheet is electrically conducted with the conductive column through the magnetic attraction piece 50; or the like, or, alternatively,
the conductive spring is pressed by the probe 40 to make the conductive spring contact with the conductive post.
The base 10 comprises a telescopic cylinder 11 and a control substrate 12, wherein the telescopic cylinder 11 is connected with the control substrate 12;
a sliding hole 20 is formed in the telescopic cylinder 11, the sliding hole 20 is a through hole, an electromagnetic coil is wound on the outer wall of one end, away from the printing platform, of the telescopic cylinder 11, and the electromagnetic coil is electrically connected with the control substrate 12;
one side of the telescopic cylinder 11, which is opposite to the control substrate 12, is provided with a first penetration port 111 and a second penetration port 112, a first end of the first conductive part 61 and a first end of the second conductive part 62 are both connected with the control substrate 12, a second end of the first conductive part 61 extends into the sliding hole 20 through the first penetration port 111, the first conductive part 61 can move at the first penetration port 111, and a second end of the second conductive part 62 extends into the sliding hole 20 through the second penetration port 112.
Wherein, one side of the control substrate 12, which is opposite to the telescopic cylinder 11, is provided with a socket 121, the socket 121 is electrically connected with the electromagnetic coil, the first conductive part 61 and the second conductive part 62, respectively, and the socket 121 is used for connecting a controller of the 3D printer, so as to supply power to the electromagnetic coil and detect the electrically conductive state of the conductive elastic sheet and the conductive column.
Wherein, the detection component 60 includes the elastic strain gauge, and the elastic strain gauge is connected with base 10, and when probe 40 was in the detection position, magnetism was inhaled piece 50 and elastic strain gauge butt, and when probe 40 touched print platform, magnetism was inhaled piece 50 and is aroused that the elastic strain gauge takes place deformation.
Wherein the position of the probe 40 further includes a storage position away from the printing platform;
one end of the sliding hole 20 close to the printing platform is an opening 21, one side of the sliding hole 20 opposite to the opening 21 is provided with an adsorption part 70, and when the probe 40 is at the storage position, the magnetic adsorption part 50 and the adsorption part 70 are mutually attracted to keep the relative position of the probe 40 and the opening 21;
the magnetic element 50 protrudes from a sidewall of the probe 40, and an inner wall of the sliding hole 20 includes a protrusion 22, and the protrusion 22 is configured to abut against the magnetic element 50, so as to position the probe 40 at the detecting position, or, so as to position the probe 40 at least partially in the sliding hole 20.
On the other hand, the embodiment of the utility model provides a 3D printer still provides, include the leveling device as above-mentioned any one.
The 3D printer further includes: the printing device comprises a guide assembly, a printing head assembly, a printing platform and a printer base;
the guide assembly is connected with the printer base, the printing platform and the printing head assembly are both connected with the guide assembly, and the leveling device is connected with the printing head assembly;
the guide assembly is used for driving the printing head assembly and the printing platform to move so that the leveling device sequentially corresponds to a plurality of preset detection points on the printing platform, and the leveling device is used for leveling detection at the plurality of detection points respectively.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A leveling device is characterized in that the leveling device is applied to a 3D printer and used for leveling a printing platform of the 3D printer, and the leveling device comprises:
the base is provided with a sliding hole;
the probe is movably connected in the sliding hole in a penetrating manner;
the detection assembly is connected with the base;
the driving part is arranged on the base and used for driving the probe to slide in the sliding hole along the direction vertical to the printing platform, and the position of the probe comprises a detection position close to the printing platform;
the probe is used for pushing the probe to move relative to the base in a direction away from the printing platform when the probe touches the printing platform so as to be separated from the detection position, and the probe enables the detection assembly to be changed from a first electrical state to a second electrical state.
2. The leveling device as recited in claim 1, wherein the driving member comprises an electromagnetic coil, a magnetic attraction member is disposed on the probe, the magnetic attraction member is disposed at an end of the probe away from the printing platform, and the electromagnetic coil is configured to drive the probe to move through the magnetic attraction member.
3. Leveling device according to claim 2,
the detection assembly comprises a first conductive part and a second conductive part, and the first conductive part and the second conductive part are both connected with the base;
when the probe is positioned at the detection position, the magnetic attraction piece is abutted against the first conductive part and the second conductive part so as to enable the first conductive part and the second conductive part to be electrically conducted; or the probe presses the first conductive part to make the first conductive part and the second conductive part electrically conducted;
when the probe touches the printing platform, the probe and the magnetic part move towards the direction away from the printing platform, the second conductive part magnetically attracts the part and/or breaks away from the first conductive part, and the first conductive part is electrically disconnected from the second conductive part.
4. Leveling device according to claim 3,
the first conductive part is a conductive elastic sheet, and the second conductive part is a conductive column;
the first end of the conductive elastic sheet and the first end of the conductive column are both connected with the base, the second end of the conductive elastic sheet can be bounced, when the probe is positioned at a detection position, the second end of the conductive elastic sheet is in adsorption connection with the magnetic attraction piece, the second end of the conductive column is abutted against the magnetic attraction piece, and the conductive elastic sheet is electrically communicated with the conductive column through the magnetic attraction piece; or the like, or, alternatively,
the conductive elastic sheet is pressed by the probe, so that the conductive elastic sheet is contacted with the conductive column.
5. Leveling device according to claim 3,
the base comprises a telescopic cylinder and a control substrate, and the telescopic cylinder is connected with the control substrate;
the telescopic cylinder is internally provided with the sliding hole which is a through hole, the electromagnetic coil is wound on the outer wall of one end of the telescopic cylinder, which is far away from the printing platform, and the electromagnetic coil is electrically connected with the control substrate;
the telescopic cylinder is provided with a first penetrating port and a second penetrating port on one side relative to the control substrate, the first end of the first conductive part and the first end of the second conductive part are both connected with the control substrate, the second end of the first conductive part extends into the sliding hole through the first penetrating port, the first conductive part can move at the first penetrating port, and the second end of the second conductive part extends into the sliding hole through the second penetrating port.
6. The leveling device of claim 5,
a socket is arranged on one side, opposite to the telescopic cylinder, of the control substrate, the socket is electrically connected with the electromagnetic coil, the first conductive part and the second conductive part respectively, and the socket is used for being connected with a controller of a 3D printer so as to supply power to the electromagnetic coil and detect the electric conduction state of the first conductive part and the second conductive part;
when the probe is at the detection position, the probe is contacted with the detection assembly so as to enable the detection assembly to be in a first electrical state.
7. Leveling device according to claim 2,
the detection assembly comprises an elastic strain gauge, the elastic strain gauge is connected with the base, when the probe is located at a detection position, the magnetic suction piece is abutted to the elastic strain gauge, and when the probe touches the printing platform, the magnetic suction piece causes the elastic strain gauge to deform.
8. The leveling device of claim 2,
the position of the probe further comprises a storage position far away from the printing platform;
the end, close to the printing platform, of the sliding hole is provided with an opening, one side, opposite to the opening, of the sliding hole is provided with an adsorption piece, and when the probe is located at the accommodating position, the magnetic adsorption piece and the adsorption piece are attracted with each other so as to keep the relative position of the probe and the opening;
the magnetic attraction piece protrudes out of the side wall of the probe, the inner wall of the sliding hole comprises a boss, and the boss is used for being abutted to the magnetic attraction piece so that the probe is located at the detection position, or so that at least part of the probe is located in the sliding hole.
9. 3D printer characterized in that it comprises a levelling device according to any one of the preceding claims 1 to 8.
10. The 3D printer of claim 9, further comprising:
the printing device comprises a guide assembly, a printing head assembly, a printing platform and a printer base;
the guide assembly is connected with the printer base, the printing platform and the printing head assembly are both connected with the guide assembly, and the leveling device is connected with the printing head assembly;
the guiding assembly is used for driving the printing head assembly and the printing platform to move, so that the leveling device sequentially corresponds to a plurality of preset detection points on the printing platform, and the leveling device is used for leveling detection at the detection points respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220245401.3U CN217862834U (en) | 2022-01-27 | 2022-01-27 | Leveling device and 3D printer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220245401.3U CN217862834U (en) | 2022-01-27 | 2022-01-27 | Leveling device and 3D printer |
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| Publication Number | Publication Date |
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| CN217862834U true CN217862834U (en) | 2022-11-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114559663A (en) * | 2022-01-27 | 2022-05-31 | 深圳市纵维立方科技有限公司 | Leveling device and 3D printer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114559663A (en) * | 2022-01-27 | 2022-05-31 | 深圳市纵维立方科技有限公司 | Leveling device and 3D printer |
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