CN214820920U - Double-nozzle switching device and 3D printer - Google Patents
Double-nozzle switching device and 3D printer Download PDFInfo
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- CN214820920U CN214820920U CN202023184809.4U CN202023184809U CN214820920U CN 214820920 U CN214820920 U CN 214820920U CN 202023184809 U CN202023184809 U CN 202023184809U CN 214820920 U CN214820920 U CN 214820920U
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- spray head
- connecting rod
- switching device
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Abstract
The utility model relates to a 3D printer technical field specifically discloses a double spray head auto-change over device and 3D printer, and double spray head auto-change over device includes backplate, supporting seat, first shower nozzle subassembly, second shower nozzle subassembly, guide rail, first switching-over piece and second switching-over piece. The backplate slides and sets up in the guide rail, and the supporting seat rotates and sets up in the backplate: the first spray head assembly and the second spray head assembly are arranged on the supporting seat, the supporting seat can swing between a first position and a second position relative to the back plate, and when the supporting seat is located at the first position, the first spray head assembly is located below the second spray head assembly; when the supporting seat is located the second position, first shower nozzle subassembly is located the top of second shower nozzle subassembly, and first switching-over piece and second switching-over piece homoenergetic just can promote the supporting seat respectively with the supporting seat butt and rotate to second position and first position to this position switching that realizes two shower nozzle subassemblies need not to set up motor gear isotructure, can reduce the weight of backplate upper part, guarantees to print efficiency and precision.
Description
Technical Field
The utility model relates to a 3D printer technical field especially relates to a double spray head auto-change over device and 3D printer.
Background
In order to print two colors or different materials, an existing 3D printer is generally configured with two nozzles, and the two nozzles need to be frequently switched during operation.
The existing double-nozzle switching mode is that a rotary double-nozzle switching device for 3D printing is provided in the earlier patent with the application number of CN201510052482.X, a steering gear is driven to rotate according to a corresponding rotating direction by a steering motor, and a second support swings to the right passively in a pendulum mode on the first support by taking a rotating center as a circle center through the meshing of the steering gear and an arc-shaped rack, so that an angle difference is generated between two nozzle devices, a longitudinal height difference is realized, and the function of switching and avoiding the double-nozzle devices is realized. However, the dual-nozzle switching device requires a motor, a gear and the like to be arranged on the nozzle assembly, which results in a heavier nozzle assembly and a complex structure, and affects the printing speed and the printing precision.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the utility model provides a double spray switching device and 3D printer to solve among the prior art through parts such as motor, gear drive double spray switching and lead to the structure complicated, and influence the problem of printing speed and printing precision.
In one aspect, the utility model provides a double spray auto-change over device, this double spray auto-change over device includes:
a guide rail;
the back plate is arranged on the guide rail in a sliding manner;
the supporting seat is rotatably arranged on the back plate:
the first spray head assembly and the second spray head assembly are arranged on the supporting seat, the supporting seat can swing between a first position and a second position relative to the back plate, when the supporting seat is located at the first position, the first spray head assembly is located below the second spray head assembly, and when the supporting seat is located at the second position, the first spray head assembly is located above the second spray head assembly;
the first reversing block and the second reversing block are respectively arranged at two ends of the guide rail, the first reversing block can be abutted against the supporting seat to push the supporting seat to rotate to the second position, and the second reversing block can be abutted against the supporting seat to push the supporting seat to rotate to the first position.
Make the supporting seat switch between primary importance and second place through first switching-over piece and second switching-over piece, so that first shower nozzle subassembly and second shower nozzle subassembly switch, can avoid setting up the part of motor, gear etc. on the backplate, can effectively fall the whole weight of each part on the backplate, be convenient for drive, and can guarantee the work efficiency and the printing precision of two shower nozzle subassemblies, simultaneously, can make supporting seat and first switching-over piece or the cooperation of second switching-over piece through moving the backplate along the guide rail, and because the slip direction of the relative guide rail of backplate can remain stable, and first switching-over piece and second switching-over piece all set up in the guide rail, thereby first switching-over piece or the in-process that the second switching-over piece promoted the switching-over can guarantee stably.
As a preferred technical scheme of the double-nozzle switching device, the support seat comprises a first mounting plate and a second mounting plate which are arranged at intervals, and a first connecting rod group and a second connecting rod group which are arranged at intervals; the first connecting rod group is respectively pivoted with the first mounting plate and the second mounting plate, and the second connecting rod group is respectively pivoted with the first mounting plate and the second mounting plate;
the first mounting plate and the second mounting plate are connected with the backboard in a rotating mode, the first spray head assembly is arranged on the first connecting rod group, and the second spray head assembly is arranged on the second connecting rod group.
First mounting panel and second mounting panel all rotate with the backplate and are connected, stability when can guaranteeing the rotation of two shower nozzle subassemblies.
As a preferred technical solution of the dual nozzle switching device, the first link group includes a first link, and the second link group includes a second link;
the first mounting panel is parallel to the second mounting panel, first connecting rod is parallel to the second connecting rod, just first mounting panel with the rotation center of backplate is located first mounting panel with the rotation center of first connecting rod with first mounting panel with between the rotation center of second connecting rod, the second mounting panel with the rotation center of backplate is located the second mounting panel with the rotation center of first connecting rod with the second mounting panel with between the rotation center of second connecting rod.
The first mounting plate, the first connecting rod, the second mounting plate and the second connecting rod form a parallelogram structure, the structure is simple, and the rotating centers of the first mounting plate and the backboard and the rotating centers of the second mounting plate and the backboard are both positioned in the middle of the first connecting rod and the second connecting rod, so that the first spray head assembly and the second spray head assembly can be guaranteed to have the same motion amplitude when the positions are switched, and the control is convenient.
As a preferred technical solution of the dual nozzle switching device, the first link group and the second link group both extend in a vertical direction, and the first nozzle assembly and the second nozzle assembly are both disposed in the vertical direction.
When the supporting seat is switched between the first position and the second position, the first spray head assembly and the second spray head assembly can be always in the vertical direction, and after the position is switched in place, the orientation of the first spray head assembly or the orientation of the second spray head assembly do not need to be adjusted, so that the printing work can be directly input, and the printing efficiency is convenient to improve.
As a preferred technical solution of the dual nozzle switching device, a first limiting post is disposed on the first connecting rod, a first limiting block is disposed on the back plate, and when the supporting seat is located at the first position, the first limiting post abuts against the first limiting block;
the second connecting rod is provided with a second limiting column, the back plate is provided with a second limiting block, and when the supporting seat is located at the second position, the second limiting column is abutted against the second limiting block.
Through the cooperation of the first limiting column and the first limiting block and the cooperation of the second limiting column and the second limiting block, the supporting seat can be guaranteed to be accurately stopped at the first position and the second position, and the position stability of the first spray head assembly and the second spray head assembly is further guaranteed.
As a preferred technical scheme of the double-nozzle switching device, the first reversing block is wedge-shaped and can be abutted against the first limiting column, and the second reversing block is wedge-shaped and can be abutted against the second limiting column.
The first reversing block is arranged to be wedge-shaped, so that the first reversing block can be smoothly inserted between the first limiting column and the first limiting block to drive the first limiting column to move, and further drive the supporting seat to move to the second position. The second reversing block is arranged to be wedge-shaped, so that the second reversing block can be smoothly inserted between the second limiting column and the second limiting block to drive the second limiting column to move, and further drive the supporting seat to move to the first position.
As a preferable technical solution of the dual spray head switching device, the dual spray head switching device further includes a spring, one end of the spring is fixed to the back plate, and the other end of the spring is fixed to one of the first mounting plate and the second mounting plate, and when the support base is located at the first position, the spring is configured to limit the support base from rotating to the second position, and when the support base is located at the second position, the spring is configured to limit the support base from rotating to the first position.
Through setting up the spring, at supporting seat pivoted in-process, the spring can be restricted the supporting seat in primary importance or second position to guarantee that the supporting seat is stable in position when primary importance or second position, and then guarantee the stable in position of first shower nozzle subassembly and second shower nozzle subassembly.
As a preferred technical scheme of the dual spray head switching device, the first mounting plate is provided with a guide post, the back plate is provided with a slot, the spring is a pressure spring, the pressure spring is always in a compression state, one end of the pressure spring is sleeved on the guide post, and the other end of the pressure spring is inserted into the slot.
Through setting up guide post and slot to guarantee the pressure spring when elastic deformation and bending, the both ends of pressure spring keep being connected stably with first mounting panel and guide post respectively.
As a preferred technical scheme of the double-nozzle switching device, the double-nozzle switching device further comprises a guide rail, wherein the back plate is provided with a roller, and the roller is matched with the guide rail in a rolling manner.
The back plate is matched with the guide rail in a rolling way through the rollers, so that the moving resistance of the back plate can be reduced.
On the other hand, the utility model provides a 3D printer, including the double spray head auto-change over device in any one of the above-mentioned scheme.
The utility model has the advantages that:
the utility model provides a double spray head auto-change over device, this double spray head auto-change over device, through first switching-over piece and second switching-over piece and supporting seat cooperation, so that the supporting seat switches between primary importance and second place, and then realize the position switching of two shower nozzle subassemblies, need not to set up motor gear isotructure on the backplate, simple structure, the cost is lower, and can effectively reduce the whole weight of backplate upper part, be convenient for drive backplate removes, and can guarantee the printing efficiency and the precision of two shower nozzle subassemblies.
This embodiment still provides a 3D printer, and this 3D printer includes above-mentioned dual spray auto-change over device, and has dual spray auto-change over device's beneficial effect.
Drawings
Fig. 1 is a schematic structural diagram of a dual nozzle switching device in an embodiment of the present invention;
fig. 2 is an exploded view of a dual head switching device according to an embodiment of the present invention;
fig. 3 is an exploded view of a dual sprinkler switching device according to an embodiment of the present invention;
fig. 4 is a schematic view of a partial structure of a dual nozzle switching device according to an embodiment of the present invention.
In the figure:
1. a back plate; 11. a back plate main body; 12. a first mounting seat; 13. a second mounting seat; 131. a slot;
2. a supporting seat; 21. a first mounting plate; 211. a guide post; 22. a second mounting plate; 23. a first link; 24. a second link;
3. a first showerhead assembly;
4. a second showerhead assembly; 41. a heat dissipating block; 42. a throat; 43. a heating block;
51. a first commutation block; 52. a second commutation block;
6. a guide rail; 61. a guide groove; 62. a first mating surface;
7. a roller; 71. a second mating surface;
81. a first limit post; 82. a second limit post;
91. a first stopper; 92. a second limiting block;
10. a spring.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means 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.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
As shown in fig. 1, the present embodiment provides a dual head switching device, which is applied to a 3D printer. The double-nozzle switching device comprises a back plate 1, a supporting seat 2, a first nozzle assembly 3, a second nozzle assembly 4, a guide rail 6, a first reversing block 51 and a second reversing block 52. Wherein, 1 slip of backplate sets up in guide rail 6, and supporting seat 2 rotates and sets up in backplate 1: the first spray head assembly 3 and the second spray head assembly 4 are both arranged on the supporting seat 2, the supporting seat 2 can swing between a first position and a second position relative to the back plate 1, and when the supporting seat 2 is located at the first position, the first spray head assembly 3 is located below the second spray head assembly 4, at the moment, the first spray head assembly 3 can perform printing operation, and the second spray head assembly 4 temporarily stops printing; when the supporting seat 2 is located at the second position, the first nozzle assembly 3 is located above the second nozzle assembly 4, at this time, the second nozzle assembly 4 can perform printing operation, and the first nozzle assembly 3 temporarily stops printing. The first reversing block 51 and the second reversing block 52 are respectively arranged at two ends of the guide rail 6, the first reversing block 51 can be abutted against the supporting seat 2 to push the supporting seat 2 to rotate to the second position, and the second reversing block 52 can be abutted against the supporting seat 2 to push the supporting seat 2 to rotate to the first position. The double-nozzle switching device provided by the embodiment, through the cooperation of first switching-over piece 51 and second switching-over piece 52 and supporting seat 2, so that supporting seat 2 switches over between primary importance and second place, and then realize the position switching of two shower nozzle subassemblies, compare prior art, need not to set up structures such as motor and gear on backplate 1, moreover, the steam generator is simple in structure, the cost is lower, and can effectively reduce the whole weight of 1 upper part of backplate, be convenient for drive backplate 1 and remove, and can guarantee the printing efficiency and the precision of two shower nozzle subassemblies. In addition, the movement direction of the first reversing block 51 or the second reversing block 52 relative to the supporting seat 2 can be ensured to be stable in the reversing process by enabling the back plate 1 to move along the guide rail 6.
Optionally, referring to fig. 2, the back plate 1 is rotatably provided with a roller 7, and the roller 7 is in rolling fit with the guide rail 6. Through the rolling fit of the rollers 7 and the guide rails 6, the movement resistance of the backboard 1 can be reduced, and the smooth movement of the backboard 1 is ensured. Wherein, backplate 1 can be connected with belt drive assembly, drives backplate 1 through the drive belt and moves along guide rail 6. Optionally, a plurality of rollers 7 are disposed on the backboard 1, at least one roller 7 is in rolling fit with the lower surface of the guide rail 6, and at least one roller 7 is in rolling fit with the upper surface of the guide rail 6, so as to further ensure the direction stability when the backboard 1 moves, where in this embodiment, a scheme in which two rollers 7 are disposed on the upper surface of the guide rail 6, and one roller 7 is disposed on the lower surface of the guide rail 6 is exemplarily given. Optionally, the guide groove 61 is formed in both the upper surface and the lower surface of the guide rail 6, the guide groove 61 has two first matching surfaces 62 arranged in a V shape, two second matching surfaces 71 arranged in a V shape are arranged on the roller 7, and the two first matching surfaces 62 are respectively abutted against the two second matching surfaces 71 to limit the roller 7 through the guide groove 61, so that the direction stability of the roller 7 when moving along the guide rail 6 can be further ensured. In other embodiments, the roller 7 may also be configured as a sliding block, and the sliding block is slidably disposed on a sliding groove of the guide rail 6.
Optionally, referring to fig. 3, the backboard 1 includes a backboard main body 11, and a first mounting seat 12 and a second mounting seat 13 disposed on the backboard main body 11. Supporting seat 2 and first mount pad 12 rotate to be connected, and gyro wheel 7 sets up in backplate main part 11, and first mount pad 12 and backplate main part 11 can dismantle the connection through the bolt, and second mount pad 13 and backplate main part 11 are likewise can dismantle the connection through the bolt, so can be convenient for assemble and maintain.
Optionally, referring to fig. 2 to 4, the support base 2 includes a first mounting plate 21 and a second mounting plate 22 which are arranged at an interval, and a first link group and a second link group which are arranged at an interval; the first connecting rod group is respectively pivoted with the first mounting plate 21 and the second mounting plate 22, and the second connecting rod group is respectively pivoted with the first mounting plate 21 and the second mounting plate 22; first mounting panel 21 and second mounting panel 22 all rotate with the first mount pad 12 of backplate 1 and are connected, and first shower nozzle subassembly 3 sets up in first linkage, and second shower nozzle subassembly 4 sets up in the second linkage. By rotatably connecting the first mounting plate 21 and the second mounting plate 22 to the first mounting seat 12 of the back plate 1, stability when the first and second head assemblies 3 and 4 rotate can be ensured. In other embodiments, the supporting base 2 can also be a plate-shaped structure and is rotatably disposed on the back plate 1 through a rotating shaft.
In the present embodiment, the first linkage includes a first link 23, and the second linkage includes a second link 24; the first mounting plate 21 is parallel to the second mounting plate 22, the first link 23 is parallel to the second link 24, the centers of rotation of the first mounting plate 21 and the first link 23 of the backboard 1 are located between the centers of rotation of the first mounting plate 21 and the first link 23 and the centers of rotation of the first mounting plate 21 and the second link 24, and the centers of rotation of the second mounting plate 22 and the first mount 12 of the backboard 1 are located between the centers of rotation of the second mounting plate 22 and the first link 23 and the centers of rotation of the second mounting plate 22 and the second link 24. The first mounting plate 21, the first connecting rod 23, the second mounting plate 22 and the second connecting rod 24 form a parallelogram structure, and the rotation is flexible. Specifically, as shown in fig. 4, two ends of the first connecting rod 23 are respectively hinged to one end of the first mounting plate 21 and one end of the second mounting plate 22, two ends of the second connecting rod 24 are respectively hinged to the other end of the first mounting plate 21 and the other end of the second mounting plate 22, the rotation center of the first mounting plate 21 and the first mounting seat 12 is O11, the rotation center of the first mounting plate 21 and the first connecting rod 23 is O12, the rotation center of the first mounting plate 21 and the second connecting rod 24 is O13, the rotation center of the second mounting plate 22 and the first mounting seat 12 is O21, the rotation center of the second mounting plate 22 and the first connecting rod 23 is O22, the rotation center of the second mounting plate 22 and the second connecting rod 24 is O23, the distance between O11 and O12 is L11, the distance between O8 and O13 is L12, the distance between O21 and O22 is L21, the distance between O21 and O23 is L22, wherein L22 is L6865, the spacing between O11 and O21, the spacing between O12 and O22, and the spacing between O13 and O23 are equal. Thus, the parallelogram structure can rotate relative to the first mounting seat 12, so as to ensure that the movement amplitude is the same when the first spray head assembly 3 and the second spray head assembly 4 are switched. Of course, in other embodiments, L11 ≠ L21 ≠ L12 ≠ L22, as needed, which also ensures that the parallelogram structure is free to rotate. Further, if necessary, O11 may be located on the extended line of the connecting line of O12 and O13, and O21 may be located on the extended line of the connecting line of O22 and O23.
Optionally, referring to fig. 4, the first link assembly and the second link assembly extend along a vertical direction, and the first nozzle assembly 3 and the second nozzle assembly 4 extend along the vertical direction. When supporting seat 2 switches between primary importance and second position, vertical direction can be followed all the time to first shower nozzle subassembly 3 and second shower nozzle subassembly 4, after the position switch targets in place, need not to adjust the orientation of first shower nozzle subassembly 3 or second shower nozzle subassembly 4, can directly drop into the printing work, is convenient for improve printing efficiency.
In other embodiments, the first linkage may further include a plurality of first rods hinged in sequence, wherein two first rods located at the outer side are hinged to the first mounting plate 21 and the second mounting plate 22, respectively, and the second linkage includes a plurality of second rods hinged in sequence, and two second rods located at the outermost side are hinged to the first mounting plate 21 and the second mounting plate 22, respectively.
Optionally, referring to fig. 2 and fig. 3, the first connecting rod 23 is provided with a first limiting post 81, the back plate 1 is provided with a first limiting block 91, and when the supporting seat 2 is located at the first position, the first limiting post 81 abuts against the first limiting block 91; the second connecting rod 24 is provided with a second limiting post 82, the back plate 1 is provided with a second limiting block 92, and when the supporting seat 2 is located at the second position, the second limiting post 82 abuts against the second limiting block 92. Through the cooperation of first spacing post 81 and first stopper 91 and the cooperation of spacing post 82 of second and second stopper 92, can guarantee that supporting seat 2 accurately stops in primary importance or second position, and then guarantee the position stability of first shower nozzle subassembly 3 and second shower nozzle subassembly 4.
Optionally, the first direction changing block 51 is wedge-shaped and can abut against the first position-limiting column 81, and the second direction changing block 52 is wedge-shaped and can abut against the second position-limiting column 82. The first reversing block 51 is wedge-shaped, so that the first reversing block 51 can be smoothly inserted between the first limiting column 81 and the first limiting block 91 to drive the first limiting column 81 to move, and then the supporting seat 2 is driven to move to the second position. Similarly, the second direction-changing block 52 is wedge-shaped, so that the second direction-changing block 52 can be smoothly inserted between the second limiting column 82 and the second limiting block 92 to drive the second limiting column 82 to move, and further drive the support base 2 to move to the first position. Specifically, for example, the first direction changing block 51 is provided with a wedge surface, the wedge surface is obliquely arranged, when the supporting seat 2 is located at the first position, along with the movement of the backboard 1 along the guide rail 6, the first direction changing block 51 is inserted between the first limiting column 81 and the first limiting block 91, the wedge surface pushes the first limiting column 81 to move upwards, the first limiting column 81 is gradually far away from the first limiting block 91, and the second limiting column 82 is gradually close to and abuts against the second limiting block 92, so that the supporting seat 2 is switched from the first position to the second position. In other embodiments, the first direction changing block 51 and the second direction changing block 52 may also be replaced by two shifting forks rotatably disposed at two ends of the guide rail 6, and the first connecting rod 23 or the second connecting rod 24 are both provided with shifting fork slots, and the shifting forks can be inserted into the corresponding shifting fork slots and rotate to drive the first connecting rod 23 or the second connecting rod 24 to move, so as to drive the supporting seat 2 to switch between the first position and the second position.
Optionally, referring to fig. 2 to 4, the dual nozzle switching device further includes a spring 10, one end of the spring 10 is fixed to the back plate 1, and the other end of the spring 10 is fixed to one of the first mounting plate 21 and the second mounting plate 22, and when the support base 2 is located at the first position, the spring 10 is configured to limit the support base 2 from rotating to the second position, and when the support base 2 is located at the second position, the spring 10 is configured to limit the support base 2 from rotating to the first position. Through setting up spring 10, at supporting seat 2 pivoted in-process, spring 10 can restrict supporting seat 2 in primary importance or second position to guarantee that supporting seat 2 is stable in position when primary importance or second position, and then guarantee the stable in position of first shower nozzle subassembly 3 and second shower nozzle subassembly 4.
Optionally, as shown in fig. 4, in this embodiment, the spring 10 is a compression spring, the compression spring is always in a compressed state, the first mounting plate 21 is provided with a guide post 211, the second mounting seat 13 of the back plate 1 is provided with a slot 131, one end of the compression spring is sleeved on the guide post 211, and the other end of the compression spring is inserted into the slot 131. Through setting up guide post 211 and slot 131 to guarantee the pressure spring when elastic deformation and bending, the both ends of pressure spring keep being connected stably with first mounting panel 21 and guide post 211 respectively. Specifically, in the rotating process of the supporting seat 2, the supporting seat 2 further has a third position located between the first position and the second position, when the supporting seat 2 is located at the third position, the first mounting plate 21 and the second mounting plate 22 both rotate to the horizontal, at this time, the pressure spring extends in the vertical direction, the first nozzle assembly 3 and the second nozzle assembly 4 are located at the same height, when the supporting seat 2 rotates from the third position to the second position, the pressure spring gradually bends and is in compression deformation, when the supporting seat 2 is located at the second position, the pressure spring deforms to be in a bow shape, and the pressure spring has a tendency of driving the first mounting plate 21 to cross the second position and continue to rotate, but due to the cooperation of the second limiting column 82 and the second limiting block 92, the first mounting plate 21 can be prevented from continuing to rotate, so that the relative positions of the supporting seat 2 and the back plate 1 can be locked. Similarly, when the supporting seat 2 rotates to the first position from the third position, the pressure spring is gradually bent and is in compression deformation, when the supporting seat 2 is located at the first position, the pressure spring deforms to be bow-shaped, and the pressure spring has a tendency of driving the first mounting plate 21 to cross the first position and continue to rotate, but because of the cooperation of the first limiting column 81 and the first limiting block 91, the first mounting plate 21 can be prevented from continuing to rotate, so that the supporting seat 2 and the backboard 1 can be locked at the relative position.
In other embodiments, the pressure spring may be replaced by a tension spring, two ends of the tension spring are respectively connected to the first mounting plate 21 and the second mounting plate 13, the tension spring is always in a stretching state, when the supporting seat 2 is located at the first position and the second position, the stretching range of the tension spring is the largest and equal, and when the supporting seat 2 is located at the third position, the stretching range of the tension spring is the smallest.
Optionally, the first showerhead assembly 3 and the second showerhead assembly 4 have the same structure, and as shown in fig. 2, taking the second showerhead assembly 4 as an example, the second showerhead assembly 4 includes a heat dissipating block 41 disposed on the first mounting seat 12, a throat 42 penetrating the heat dissipating block 41, and a heating block 43 disposed at the lower end of the throat 42. In this embodiment, first shower nozzle subassembly 3 and second shower nozzle subassembly 4 all adopt the distal end to extrude, and motor and the shower nozzle subassembly interval that is used for extruding set up, can further reduce the whole weight of part on backplate 1 to can further guarantee the precision that the shower nozzle subassembly printed.
The embodiment also provides a 3D printer, which comprises the double-nozzle switching device in the scheme. And this double spray head auto-change over device passes through first switching-over piece 51 and the cooperation of second switching-over piece 52 and supporting seat 2 to make supporting seat 2 switch between primary importance and second place, and then realize the position switching of two shower nozzle subassemblies, compare prior art, need not to set up structures such as motor and gear on backplate 1, simple structure, the cost is lower, and can effectively reduce the whole weight of backplate 1 upper part, be convenient for drive backplate 1 removes, and can guarantee the printing efficiency and the precision of two shower nozzle subassemblies.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A dual spray head switching device, comprising:
a guide rail (6);
the back plate (1) is arranged on the guide rail (6) in a sliding manner;
a support base (2) rotatably disposed on the back plate (1):
the first spray head assembly (3) and the second spray head assembly (4) are arranged on the supporting seat (2), the supporting seat (2) can swing between a first position and a second position relative to the back plate (1), when the supporting seat (2) is located at the first position, the first spray head assembly (3) is located below the second spray head assembly (4), and when the supporting seat (2) is located at the second position, the first spray head assembly (3) is located above the second spray head assembly (4);
first switching-over piece (51) and second switching-over piece (52), set up respectively in the both ends of guide rail (6), just first switching-over piece (51) can with supporting seat (2) butt is in order to promote supporting seat (2) rotate extremely the second position, second switching-over piece (52) can with supporting seat (2) butt is in order to promote supporting seat (2) rotate extremely first position.
2. The dual sprinkler switching device of claim 1, wherein the support base (2) comprises first and second spaced mounting plates (21, 22) and first and second spaced linkage sets; the first connecting rod group is respectively pivoted with the first mounting plate (21) and the second mounting plate (22), and the second connecting rod group is respectively pivoted with the first mounting plate (21) and the second mounting plate (22);
first mounting panel (21) with second mounting panel (22) all with backplate (1) rotates to be connected, first shower nozzle subassembly (3) set up in first connecting rod group, second shower nozzle subassembly (4) set up in second connecting rod group.
3. Dual spray head switching device according to claim 2, wherein the first linkage comprises a first link (23) and the second linkage comprises a second link (24);
first mounting panel (21) is on a parallel with second mounting panel (22), first connecting rod (23) is on a parallel with second connecting rod (24), just first mounting panel (21) with the rotation center of backplate (1) is located first mounting panel (21) with the rotation center of first connecting rod (23) with between the rotation center of first mounting panel (21) with second connecting rod (24), second mounting panel (22) with the rotation center of backplate (1) is located second mounting panel (22) with the rotation center of first connecting rod (23) with between the rotation center of second mounting panel (22) with second connecting rod (24).
4. The dual spray head switching device of claim 3, wherein the first linkage and the second linkage each extend in a vertical direction, and the first spray head assembly (3) and the second spray head assembly (4) are each disposed in a vertical direction.
5. The dual spray head switching device of claim 3, wherein the first connecting rod (23) is provided with a first limiting post (81), the back plate (1) is provided with a first limiting block (91), and when the supporting seat (2) is located at the first position, the first limiting post (81) abuts against the first limiting block (91);
the second limiting column (82) is arranged on the second connecting rod (24), the second limiting block (92) is arranged on the back plate (1), and when the supporting seat (2) is located at the second position, the second limiting column (82) is abutted to the second limiting block (92).
6. Double sprinkler switching device according to claim 5, wherein the first reversing block (51) is wedge-shaped and can abut against the first limit post (81), and the second reversing block (52) is wedge-shaped and can abut against the second limit post (82).
7. A dual sprinkler switching device according to claim 3, further comprising a spring (10), one end of the spring (10) being fixed to the back plate (1), the other end of the spring (10) being fixed to one of the first mounting plate (21) and the second mounting plate (22), and the spring (10) being configured to limit the rotation of the support seat (2) towards the second position when the support seat (2) is in the first position, and the spring (10) being configured to limit the rotation of the support seat (2) towards the first position when the support seat (2) is in the second position.
8. The dual spray head switching device of claim 7, wherein the first mounting plate (21) is provided with a guide post (211), the back plate (1) is provided with a slot (131), the spring (10) is a compression spring, the compression spring is always in a compressed state, one end of the compression spring is sleeved on the guide post (211), and the other end of the compression spring is inserted into the slot (131).
9. Double sprinkler switching device according to any of the claims 1-8, characterized in that the back plate (1) is provided with rollers (7), which rollers (7) are in rolling engagement with the guide rails (6).
10. A 3D printer comprising the dual head switching device of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023184809.4U CN214820920U (en) | 2020-12-25 | 2020-12-25 | Double-nozzle switching device and 3D printer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023184809.4U CN214820920U (en) | 2020-12-25 | 2020-12-25 | Double-nozzle switching device and 3D printer |
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| Publication Number | Publication Date |
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| CN214820920U true CN214820920U (en) | 2021-11-23 |
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| CN202023184809.4U Active CN214820920U (en) | 2020-12-25 | 2020-12-25 | Double-nozzle switching device and 3D printer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112757637A (en) * | 2020-12-25 | 2021-05-07 | 深圳市创想三维科技有限公司 | Double-nozzle switching device and 3D printer |
| CN115091750A (en) * | 2022-07-13 | 2022-09-23 | 深圳市创想三维科技股份有限公司 | Double-nozzle device and 3D printing equipment |
-
2020
- 2020-12-25 CN CN202023184809.4U patent/CN214820920U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112757637A (en) * | 2020-12-25 | 2021-05-07 | 深圳市创想三维科技有限公司 | Double-nozzle switching device and 3D printer |
| CN115091750A (en) * | 2022-07-13 | 2022-09-23 | 深圳市创想三维科技股份有限公司 | Double-nozzle device and 3D printing equipment |
| CN115091750B (en) * | 2022-07-13 | 2024-01-05 | 深圳市创想三维科技股份有限公司 | Double-spray-head device and 3D printing equipment |
| WO2024012282A1 (en) * | 2022-07-13 | 2024-01-18 | 深圳市创想三维科技股份有限公司 | Dual-spray-head device, and 3d printing apparatus |
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