CN215531522U - Drive assembly for a discharge device - Google Patents
Drive assembly for a discharge device Download PDFInfo
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- CN215531522U CN215531522U CN202122119830.4U CN202122119830U CN215531522U CN 215531522 U CN215531522 U CN 215531522U CN 202122119830 U CN202122119830 U CN 202122119830U CN 215531522 U CN215531522 U CN 215531522U
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- screw rod
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- drive assembly
- screw
- piston
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Abstract
The invention discloses a driving assembly for a discharging device, and belongs to the field of 3D printing equipment. The drive assembly includes: run through motor, lead screw and locating part, the lead screw side is equipped with at least one and prevents changeing the portion, prevents that changeing the portion and extends along the center pin direction of lead screw, the locating part with the lead screw prevent changeing the portion butt, the circumferential motion of locating part restriction lead screw makes the lead screw along the extending direction displacement of lead screw. According to the invention, the limit piece limits the circumferential movement of the screw rod, so that when the penetrating motor is driven by electric power, the screw force applied to the screw rod by the transmission piece under the action of the magnetic field force only keeps the displacement force along the extension direction of the screw rod, the linear displacement force can be used as a load to overcome the gravity of the screw rod, and the screw rod can overcome the gravity of the screw rod to enable the screw rod to move upwards when the motor moves upwards.
Description
Technical Field
The invention belongs to the field of 3D printing equipment, and particularly relates to a driving assembly for a discharging device.
Background
Because the discharging device that is used for food 3D to print need to accept the printing material in discharging device, so there is the too big problem that leads to the too big uncontrollable printing precision of 3D printer load of discharging device's whole weight, consequently need select for use the less drive assembly of weight to reduce the load of 3D printer, but the less gravity that can't overcome the lead screw of the less drive assembly power of weight makes the lead screw upwards displacement.
When the existing driving assembly drives the screw rod to move downwards, the resultant force of the gravity of the screw rod and the downward force of the driving assembly in the process that the driving assembly applies the screw force to the screw rod is larger than the friction force between the screw rod and the driving assembly, so that the screw rod can move downwards, and when the driving assembly drives the screw rod to move upwards, the gravity of the screw rod can increase the friction force between the screw rod and the driving assembly to block the upward movement of the screw rod, at the moment, the upward force of the driving assembly in the process that the driving assembly applies the screw force to the screw rod is smaller than or equal to the friction force between the screw rod and the driving assembly, so that the screw rod cannot guide the upward displacement of the screw rod, and is driven to rotate by the driving assembly due to the overlarge friction force, so that the driving assembly capable of enabling the screw rod to do reciprocating displacement in the vertical direction is needed to be provided.
Disclosure of Invention
The purpose of the invention is as follows: a drive assembly for a discharge device is provided to solve the above-mentioned problems of the prior art.
The technical scheme is as follows: a drive assembly for an outfeed device comprising: penetrating the motor.
The side of the screw rod is provided with at least one anti-rotation part, and the anti-rotation part extends along the central shaft direction of the screw rod.
The limiting part is abutted against the rotation preventing part of the screw rod.
The limiting part limits circumferential movement of the screw rod to enable the screw rod to move along the extension direction of the screw rod.
In a further embodiment, the axial side milling surface is a side plane, a side groove or a side protrusion extending along the central axis of the screw.
In a further embodiment, when the rotation preventing part is a side plane or a side protrusion, a thread continuous with the circumferential side wall of the screw rod is further provided on the side plane or the side protrusion.
In a further embodiment, the limiting member is a limiting member provided with a through hole, and the shape of the through hole is consistent with the shape of the radial section of the screw rod.
The limiting piece is connected with a base shell penetrating through the motor and/or the discharging device.
The screw rod penetrates through the through hole, and the through hole limits circumferential movement of the screw rod.
In a further embodiment, the limiting member is a limiting member whose side surface abuts against the rotation preventing portion.
The limiting piece is connected with a base shell penetrating through the motor and/or the discharging device.
In a further embodiment, the thickness of the position where the limiting member abuts against the rotation-preventing part is at least twice of the screw pitch of the screw rod.
In a further embodiment, the through-motor comprises: an electric motor.
The transmission part is accommodated in the motor.
The screw rod is in threaded connection with the transmission piece.
In a further embodiment, the drive assembly for the outfeed device further comprises: and the piston is connected with the screw rod and contained in the material pipe of the discharging device.
The piston is in sealing fit with the material pipe.
In a further embodiment, the limiting member is a piston, and the piston and the material tube are in an elliptic cylinder structure or a prismatic structure in sealing fit.
Has the advantages that: the invention discloses a driving assembly for a discharging device, which limits circumferential movement of a screw rod through a limiting piece, prevents the screw rod and a penetrating motor from rotating due to friction force, avoids the dispersion of spiral force into rotating force and lifting force, further ensures that when the penetrating motor is driven by electric power, the spiral force applied to the screw rod by a driving piece penetrating the motor only keeps displacement force along the extension direction of the screw rod, can move upwards by the motor to enable the screw rod to move upwards, enables the screw rod to perform reciprocating displacement in the vertical direction, can be detachably connected with the penetrating motor through the limiting piece, is convenient for the screw rod to pass through the penetrating motor, and then installs the limiting piece on the penetrating motor, thereby solving the problem that the screw rod cannot pass through the penetrating motor when the limiting piece is integrated with the penetrating motor.
Drawings
FIG. 1 is an axial schematic view of the present invention.
Fig. 2 is a schematic front view of the present invention.
Fig. 3 is a schematic left side cross-sectional view of the present invention.
Fig. 4 is a schematic top cross-sectional view of the present invention.
Fig. 5 is a left side cross-sectional view of the present invention applied to a discharging device.
Fig. 6 is a top partial cross-sectional view of the piston of the present invention in cooperation with a feed tube.
The reference numerals shown in fig. 1 to 6 are: run through motor 1, driving medium 2, lead screw 3, locating part 4, base casing 5, receive material casing 6, material pipe 7, piston 8.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
The invention discloses a driving assembly capable of overcoming the gravity of a screw rod and enabling the screw rod to perform reciprocating displacement in the vertical direction.
The drive assembly includes: run through motor 1, driving medium 2, lead screw 3 and locating part 4.
The through motor 1 includes: the motor and the transmission member 2 accommodated in the motor penetrate through the motor 1, when the motor is driven by electric power, the transmission member 2 applies a screw force to the screw rod 3 under the action of a magnetic field force, the screw rod 3 is in threaded connection with the transmission member 2, and the transmission member 2 can be a screw nut in the embodiment.
The side of the screw rod 3 is provided with at least one rotation prevention part which extends along the central shaft direction of the screw rod 3.
The limiting part 4 is arranged at one end penetrating through the motor 1 and is abutted against the rotation preventing part of the screw rod 3.
The limiting member 4 limits circumferential movement of the screw rod 3 to enable the screw rod 3 to displace along the extending direction of the screw rod 3.
When used in an outfeed device, the outfeed device comprises: base housing 5, drive assembly, receive material casing 6, material pipe 7 and piston 8, receive material casing 6 and set up the one end at base housing 5, material pipe 7 is acceptd in receiving material casing 6, piston 8 and the inner wall butt of material pipe 7, drive assembly's the motor 1 that runs through and locating part 4 are acceptd in discharging device's base housing 5, lead screw 3 passes and runs through in motor 1 and base housing 5 extend to discharging device's material pipe 7 to be connected with piston 8.
The assembling method of the embodiment comprises the following steps: the screw rod 3 penetrates through the motor 1, then the limiting part 4 is installed to form a driving assembly, and then the driving assembly is installed in the base shell 5.
The working principle is as follows: when the existing through motor 1 goes upwards, the reason that the screw rod 3 cannot go upwards is that the self weight of the screw rod 3 is too large, so that the friction force between the screw rod 3 and the through motor 1 is too large, the screw force applied to the screw rod 3 by the through motor 1 only leaves a rotating force, the screw rod 3 rotates along with the through motor 1, the circumferential motion of the screw rod 3 is limited by the limiting piece 4, the screw rod 3 and the through motor 1 are prevented from rotating due to the friction force, further, when the through motor 1 is driven by electric power, the screw force applied to the screw rod 3 by the transmission piece 2 of the through motor 1 only keeps the displacement force along the extension direction of the screw rod 3, the screw rod 3 can go upwards by the through motor 1, the screw rod 3 can do reciprocating displacement in the vertical direction, and can be detachably connected with the through motor 1 by the limiting piece 4, the limiting piece 4 can be convenient for installing the limiting piece 4 on the through motor 1 after the screw rod 3 passes through the through motor 1, the problem of locating part 4 with when running through motor 1 an organic whole, lead screw 3 can't pass through motor 1 is solved.
In the present embodiment, the rotation preventing portion is a side plane, a side groove, or a side protrusion extending along the central axis of the screw 3.
The method for processing the screw rod 3 comprises the following steps: firstly, a rotation prevention part is processed on the side surface of the screw rod 3, and then threads are processed on the side wall of the screw rod 3.
Or a thread is firstly processed on the side wall of the screw rod 3, and then a rotation prevention part is processed on the side surface of the screw rod 3.
Both of the above two processing methods can obtain the screw 3 having the screw thread and the rotation preventing portion.
As in the embodiment shown in fig. 1-4, an embodiment with side planes extending along the central axis of the screw 3 is used.
In the present embodiment, in the embodiment of the side plane or the side protrusion, a thread continuous with the circumferential side wall of the screw rod 3 may be further provided on the side plane or the side protrusion.
In the embodiment shown in fig. 1-3, the limiting member 4 is a limiting member provided with a through hole, the screw rod 3 passes through the through hole, and a limiting portion abutting against the circumferential side rotation preventing portion of the screw rod 3 is provided in the through hole.
In the present exemplary embodiment, the stop element 4 is connected to a base housing 5 which extends through the electric motor 1 and/or the discharge device.
The shape of the through hole is consistent with the shape of the radial section of the screw rod 3, the screw rod 3 penetrates through the through hole, and the through hole limits the circumferential movement of the screw rod 3.
In another embodiment, the limiting member 4 is a limiting member whose side surface abuts against the circumferential-side rotation-preventing portion of the screw rod 3, for example, the limiting member 4 in fig. 1 to 3 is divided into two parts, and only a part of the limiting member 4 abutting against the circumferential-side rotation-preventing portion of the screw rod 3 is reserved, and the part is fixed on the through motor 1, so that the rotation of the screw rod 3 can still be limited.
In the present exemplary embodiment, the stop element 4 is connected to a base housing 5 which extends through the electric motor 1 and/or the discharge device.
In a further embodiment, when the thickness of the abutting position of the limiting member 4 and the circumferential side rotation preventing part of the screw rod 3 is smaller than or equal to the thread pitch of the screw rod 3, the limiting member 4 is in threaded engagement with the screw rod 3, and the screw rod 3 cannot perform linear motion.
In order to solve the above problem, the thickness of the abutting position of the stopper 4 and the circumferential side rotation preventing portion of the screw 3 is at least twice the pitch of the screw 3.
The thickness through increasing locating part 4 can avoid the screw thread joint of locating part 4 and lead screw 3, and then has guaranteed the normal linear motion of lead screw 3.
In a further embodiment, the drive assembly further comprises: and the piston 8 is connected with the screw rod 3 and is contained in the material pipe 7 of the discharging device.
The piston 8 is in sealing engagement with the pipe 7.
In a further embodiment, the limiting member 4 is a piston 8, and the piston 8 and the material tube 7 are of an elliptic cylinder structure or a prismatic structure in sealing fit.
In this embodiment, the drive assembly-based outfeed device comprises: a base housing 5, a material receiving housing 6, a drive assembly, a material pipe 7 and a piston 8.
A control circuit and a driving assembly are arranged in the base shell 5, and a connecting frame connected with the 3D printer is arranged outside the base shell 5.
The receiving housing 6 is provided at one end of the base housing 5.
The drive unit is the drive unit described in the above embodiment, the penetration motor 1 of the drive unit is housed in the base housing 5, and the lead screw 3 of the drive unit penetrates the penetration motor 1 and the base housing 5.
The material pipe 7 is detachably connected with the material receiving shell 6.
The piston 8 is accommodated in the material pipe 7 and connected with the screw rod 3, wherein the piston 8 and the screw rod 3 can be fixedly connected in a circumferential direction by forming a threaded hole in the side surface of the screw rod 3 and then using a screw to penetrate through the piston 8 to be in threaded connection with the screw rod 3, or by forming a threaded hole in the end portion of the screw rod 3 and then using a screw to penetrate through the piston 8 to be in threaded connection with the screw rod 3, so that the piston 8 is fixedly sleeved with the end portion of the screw rod 3, and then the circumferential positioning of the piston 8 and the screw rod 3 is realized by using an anti-rotation portion of the screw rod 3.
In a further embodiment, the limiting member 4 is a piston 8, and the piston 8 and the material pipe 7 are in an elliptic cylinder structure or a prism structure in sealing fit, in this embodiment, at least the side wall of the piston 8 is provided with a rubber member material pipe 7 in elastic abutment to realize the sealing fit of the piston 8 and the material pipe 7.
The cross-section of the piston 8 and the material pipe 7 in the present embodiment has a prism structure, i.e. the prism structure has at least a hexagonal prism structure.
The technical scheme of the piston 8 and the material pipe 7 with the elliptic cylinder structure or the prism structure in the embodiment can be combined with the embodiment of the limiting block to limit the circumferential rotation motion of the screw rod 3.
Through the section design of piston 8 and material pipe 7 for cross-section oval or polygon structure to through the fixed connection of piston 8 and lead screw 3, can restrict the circumferential direction of piston 8 through material pipe 7, and then restrict the circumferential direction of lead screw 3, only remain the displacement force along the extending direction of lead screw 3 when reaching the screw force that driving medium 2 that runs through motor 1 applyed screw 3, can do the up-going action and make lead screw 3 go upward running through motor 1, make lead screw 3 can do the reciprocating displacement of vertical direction.
The assembling method of the embodiment comprises the following steps: s1, the screw rod 3 penetrates through the penetrating motor 1 to form a driving assembly, and then the penetrating motor 1 is installed in the base shell 5.
S2, the piston 8 is mounted on one end of the screw rod 3.
S3, the material receiving shell 6 is arranged at one end of the base shell 5.
S4, the material pipe 7 is contained in the material receiving shell 6, and the material pipe 7 is detachably connected with the material receiving shell 6.
Because the resultant force of the gravity of the screw rod 3 and the downward force in the screw force applied to the screw rod 3 by the driving assembly is greater than the friction force between the screw rod 3 and the driving assembly when the screw rod 3 moves downwards, the screw rod 3 can move downwards, the piston 8 is accommodated in the material pipe 7, the circumferential rotation of the piston 8 is limited through the material pipe 7, the circumferential rotation of the screw rod 3 is limited, and the technical effect that only the displacement force along the extension direction of the screw rod 3 is kept when the screw force applied to the screw rod 3 by the transmission part 2 penetrating through the motor 1 is achieved.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. Drive assembly for a discharge device, comprising: the motor penetrates through the electric motor and is provided with a motor,
the side surface of the screw rod is provided with at least one anti-rotation part, and the anti-rotation part extends along the central shaft direction of the screw rod;
the limiting piece is abutted against the rotation preventing part of the screw rod;
the limiting part limits circumferential movement of the screw rod to enable the screw rod to move along the extension direction of the screw rod.
2. The drive assembly for an outfeed device according to claim 1,
the rotation preventing part is a side plane, a side groove or a side protrusion extending along the central axis of the screw rod.
3. The drive assembly for an outfeed device according to claim 2,
when the rotation preventing part is a side plane or a side bulge, a thread continuous with the circumferential side wall of the screw rod is also arranged on the side plane or the side bulge.
4. The drive assembly for an outfeed device according to claim 1,
the limiting piece is a limiting piece provided with a through hole, and the shape of the through hole is consistent with the shape of the radial section of the screw rod;
the limiting piece is connected with a base shell penetrating through the motor and/or the discharging device;
the screw rod penetrates through the through hole, and the through hole limits circumferential movement of the screw rod.
5. The drive assembly for an outfeed device according to claim 1,
the limiting piece is a limiting piece with the side surface abutting against the rotation preventing part;
the limiting piece is connected with a base shell penetrating through the motor and/or the discharging device.
6. The drive assembly for an outfeed device according to claim 1,
the thickness of the abutting part of the limiting part and the rotation preventing part is at least twice of the screw pitch of the screw rod.
7. The drive assembly for an outfeed device according to claim 1,
the through motor includes: the electric motor is driven by a motor, and the motor,
a transmission member accommodated in the motor;
the screw rod is in threaded connection with the transmission piece.
8. The drive assembly for an outfeed device of claim 1, further comprising:
the piston is connected with the screw rod and is accommodated in the material pipe of the discharging device;
the piston is in sealing fit with the material pipe.
9. The drive assembly for an outfeed device according to claim 8,
the limiting piece is a piston;
the piston and the material pipe are in an elliptic cylinder structure or a prism structure which are in sealing fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122119830.4U CN215531522U (en) | 2021-09-03 | 2021-09-03 | Drive assembly for a discharge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122119830.4U CN215531522U (en) | 2021-09-03 | 2021-09-03 | Drive assembly for a discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215531522U true CN215531522U (en) | 2022-01-18 |
Family
ID=79846856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122119830.4U Active CN215531522U (en) | 2021-09-03 | 2021-09-03 | Drive assembly for a discharge device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215531522U (en) |
-
2021
- 2021-09-03 CN CN202122119830.4U patent/CN215531522U/en active Active
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