CN214324196U - Spread powder compaction device - Google Patents
Spread powder compaction device Download PDFInfo
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- CN214324196U CN214324196U CN202021909934.4U CN202021909934U CN214324196U CN 214324196 U CN214324196 U CN 214324196U CN 202021909934 U CN202021909934 U CN 202021909934U CN 214324196 U CN214324196 U CN 214324196U
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Abstract
An embodiment of the utility model provides a spread powder compaction device relates to laser sintering equipment field, include: the powder spreading device comprises a mounting frame, a powder spreading roller, a heating device and a driving mechanism, wherein the powder spreading roller is arranged along the length direction of the cross beam and is rotationally connected with the cross beam, and a cavity extending along the axial direction is arranged inside the powder spreading roller; the heating device is arranged in the cavity and used for heating the powder spreading roller; the driving mechanism is connected with one end of the powder paving roller and used for driving the powder paving roller to axially rotate. Through set up heating device in spreading the powder roller, utilize heating device to heat spreading the powder roller before the use, improve the temperature of spreading the powder roller, because the difference in temperature causes warpage when avoiding the high powder layer of powder roller contact temperature of low temperature, improve and print precision and production efficiency.
Description
Technical Field
The utility model relates to a laser sintering equipment field especially relates to a spread powder compaction device.
Background
Selective laser sintering is one of the most mature forming methods based on the principle of additive manufacturing technology. The printing material of the technology is mainly a high polymer powder material, almost all high polymer materials are covered, so the application range is wide, and the adaptability is high. However, the different friction coefficients, hardness and other performance parameters of each material lead to different materials of the powder spreading roller or scraper, and the powder spreading roller or scraper with different hardness or friction coefficients adopted for different materials has a better powder spreading effect, so that the powder spreading roller needs to be conveniently detached. The existing powder paving compaction device can not preheat the powder paving roller, and when the powder paving roller with low temperature contacts the powder layer with high temperature, the temperature difference can cause warping deformation; the existing powder paving and compacting device cannot be freely disassembled, so that the later maintenance is inconvenient, the production efficiency is low, the adaptability is not high, and the service life of the powder paving roller is short.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a spread powder compaction device for it has unable preheating to spreading the powder roller to spread powder compaction device existence among the solution prior art, and the unchangeable problem is dismantled in the installation.
An embodiment of the utility model provides a spread powder compaction device, include:
a mounting frame;
the powder spreading roller is rotatably connected with the mounting frame, and a cavity extending along the axial direction is formed in the powder spreading roller;
the heating device is arranged in the cavity and used for heating the powder spreading roller;
and the driving mechanism is connected with one end of the powder paving roller and is used for driving the powder paving roller to axially rotate.
According to the utility model discloses spread powder compaction device of an embodiment, the mounting bracket includes: the powder spreading roller comprises a cross beam, a supporting plate, a first bearing seat and a second bearing seat, wherein the supporting plate is arranged at the bottom of one end of the cross beam, and the first bearing seat is arranged at the upper part of the supporting plate and is in rotating fit with one end of the powder spreading roller through a bearing; and the second bearing block is arranged at the other end of the cross beam and is in running fit with the other end of the powder spreading roller through a bearing.
According to the utility model discloses spread powder compaction device of an embodiment, actuating mechanism includes: motor and drive mechanism, the motor set up in the upper portion of crossbeam one end, drive mechanism respectively with the pivot of motor the one end of spreading the powder roller is connected, the motor passes through drive mechanism drives spread the axial rotation of powder roller.
According to the utility model discloses spread powder compaction device of an embodiment, drive mechanism includes: axis of rotation, third bearing frame, fourth bearing frame, first belt pulley and second belt pulley, third bearing frame with fourth bearing frame sets up in proper order the interval and deviates from spreading powder roller one side in first bearing frame backup pad upper portion, the one end of axis of rotation pass through the bearing with fourth bearing frame normal running fit, the other end of axis of rotation passes behind third bearing frame's the bearing with spread the one end of powder roller and can dismantle the connection, first belt pulley cover is located the pivot of motor, second belt pulley cover is located the outer peripheral face of axis of rotation, and be located third bearing frame with between the fourth bearing frame, the second belt pulley pass through the belt with first belt pulley connection.
According to the utility model discloses a spread powder compaction device of embodiment, drive mechanism still includes: the sleeve is sleeved on the outer peripheral surface of the rotating shaft, one end of the sleeve abuts against one side of the second belt pulley, and the other end of the sleeve abuts against an inner ring of the third bearing seat; the outer peripheral face of axis of rotation one end is provided with the shaft shoulder, the opposite side of second belt pulley support lean on in the shaft shoulder.
According to the utility model discloses a spread powder compaction device of an embodiment, spread the tip of powder roller one end be formed with the port of cavity intercommunication, the other end of axis of rotation insert in the port, and with spread the one end splined connection of powder roller.
According to the utility model discloses spread powder compaction device of an embodiment, drive mechanism includes: the power output shaft of the gear box component passes through the shaft coupling and is connected with the one end of spreading the powder roller.
According to the utility model discloses a spread powder compaction device of an embodiment, heating device is the electrical heating stick, the electrical heating stick is followed spread the axial of powder roller set up in the cavity.
According to the utility model discloses a spread powder compaction device of embodiment, spread powder compaction device still includes: the temperature sensor, the inside of axis of rotation is provided with along axially extended centre bore, temperature sensor set up in the centre bore.
According to the utility model discloses a spread powder compaction device of embodiment, spread powder compaction device still includes: the idler wheel is rotatably arranged on one side, deviating from the powder spreading roller, of the second bearing seat.
The embodiment of the utility model provides a spread powder compaction device is through setting up heating device in spreading the powder roller, utilizes heating device to heat spreading the powder roller before the use, improves the temperature of spreading the powder roller, causes warpage because of the difference in temperature when avoiding the low powder layer of spreading powder roller contact temperature height of temperature, improves and prints precision and production efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic side view of a cross-sectional structure of a powder paving and compacting device provided by an embodiment of the invention;
fig. 2 is a schematic perspective view of a powder laying compaction device provided by the embodiment of the present invention.
Reference numerals:
110: a cross beam; 111: a support plate; 112: a first bearing housing; 113: a second bearing housing; 114: cushion blocks; 120: spreading a powder roller; 130: a heating device; 140: a motor; 141: a rotating shaft; 142: a third bearing seat; 143: a fourth bearing seat; 144: a first pulley; 145: a second pulley; 146: a belt; 147: a sleeve; 148: a motor bracket; 150: a temperature sensor; 160: and a roller.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that 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 efforts belong to the protection scope of the present invention.
The powder laying compaction device of the embodiment of the invention is described below with reference to fig. 1-2.
Fig. 1 illustrates a schematic side sectional view of a powder laying compaction device, and fig. 2 illustrates a schematic perspective view of a powder laying compaction device, as shown in fig. 1 and 2, comprising: mounting rack, powder spreading roller 120, heating device 130 and driving mechanism.
The mounting bracket is used for bearing above-mentioned each mechanism, and the mounting bracket includes: the cross beam 110 is of a groove-shaped structure, a notch of the cross beam 110 faces downwards, an opening is formed in the upper portion of one end of the cross beam 110, the position of the opening corresponds to that of the motor 140, and the opening can be used for a transmission mechanism to pass through. The edges of the two side walls of the cross beam 110 extend towards the two sides of the cross beam 110 to form a connecting edge perpendicular to the side walls, and screw holes are formed in the connecting edge. The supporting plate 111 is arranged at the bottom of one end of the cross beam 110, the edge of the supporting plate 111 is connected with the connecting edge through a screw, and the width of the supporting plate 111 is matched with that of the cross beam 110. In some embodiments, at least one layer of spacers 114 is further disposed between the supporting plate 111 and the cross beam 110, the spacers 114 are clamped between the supporting plate 111 and the cross beam 110, and the distance between the supporting plate 111 and the cross beam 110 can be adjusted by changing the number and thickness of the spacers 114. The first bearing seat 112 is arranged at the upper part of the support plate 111 and is in running fit with one end of the powder spreading roller 120 through a bearing; the first bearing seat 112 is connected with the support plate 111 by a screw, and the first bearing seat 112 is an R14 bearing seat. The second bearing block 113 is arranged at the other end of the beam 110 and is in running fit with the other end of the powder spreading roller 120 through a bearing, and the second bearing block 113 is connected with the beam 110 through a screw.
It should be noted that the second bearing seat 113 is a locking bearing seat, and the locking bearing seat is provided to facilitate replacement and maintenance of the powder spreading roller 120, and when the powder spreading roller 120 is replaced, the locking screw of the second bearing seat 113 is firstly screwed off, the second bearing seat 113 is dismounted, and the powder spreading roller 120 is pulled out in a direction away from the first bearing seat 112, so that the dismounting of the powder spreading roller 120 is completed. The process of installing the dusting roller 120 is the reverse of the disassembly process described above and will not be described in detail herein. Compared with the existing powder paving and compacting device, the powder paving roller 120 of the powder paving and compacting device is more convenient to disassemble and maintain, the printing efficiency can be effectively improved, and the service life of the powder paving roller 120 is prolonged.
The powder spreading roller 120 is arranged along the length direction of the beam 110, the powder spreading roller 120 is positioned in the groove-shaped structure of the beam 110, and two ends of the powder spreading roller 120 are in running fit with the first bearing block 112 and the second bearing block 113 through bearings. Further, the both ends of spreading powder roller 120 are provided with the shaft shoulder respectively, and the shaft shoulder of spreading powder roller 120 one end supports and leans on the inner ring in first bearing frame 112's bearing, and the shaft shoulder of the other end supports and leans on the inner ring in second bearing frame 113's bearing, and it is spacing to spread powder roller 120 through two bearings, prevents to spread powder roller 120 and rotates the in-process and take place to remove along the axial, further improves and prints the precision. The powder spreading roller 120 is provided with a hollow cavity extending along the axial direction, and the hollow cavity penetrates through the powder spreading roller 120 along the axial direction in the embodiment.
It should be noted that the heating device 130 is not limited to the electric heating rod, and may also be an electric heating wire or an electric heating sheet, the electric heating sheet may be prefabricated below the outer circumferential surface of the powder spreading roller 120 in the process of manufacturing the powder spreading roller 120, and the electric heating sheet may directly heat the outer circumferential surface of the powder spreading roller 120 when in operation, so as to reduce heat loss and improve heating efficiency.
Actuating mechanism is used for the drive to spread whitewashed roller 120 axial rotation, and actuating mechanism includes: the motor 140 and the transmission mechanism, the motor 140 is arranged on the upper portion of one end of the cross beam 110, in order to fix the motor 140 conveniently, the motor support 148 can be arranged on the upper portion of one end of the cross beam 110, the motor 140 is fixed on the motor support 148 through screws, the motor support 148 is connected with the cross beam 110 through screws, and the motor 140 can be detached and installed conveniently by arranging the motor support 148.
The transmission mechanism is respectively connected with a rotating shaft of the motor 140 and one end of the powder spreading roller 120, and the transmission mechanism is used for transmitting the power output by the motor 140 to the powder spreading roller 120 so as to drive the powder spreading roller 120 to axially rotate. The transmission mechanism includes: the powder spreading roller comprises a rotating shaft 141, a third bearing seat 142, a fourth bearing seat 143, a first belt pulley 144 and a second belt pulley 145, wherein the third bearing seat 142 and the fourth bearing seat 143 are sequentially arranged on the upper portion, away from the powder spreading roller 120, of the supporting plate 111 of the first bearing seat 112 at intervals, the third bearing seat 142 and the fourth bearing seat 143 are connected with the supporting plate 111 through screws, and the third bearing seat 142 and the fourth bearing seat 143 are R11 bearing seats in this embodiment. One end of the rotating shaft 141 is in running fit with the fourth bearing seat 143 through a bearing, the other end of the rotating shaft 141 passes through the bearing of the third bearing seat 142 and then is detachably connected with one end of the powder spreading roller 120, the rotating shaft of the motor 140 is sleeved with the first belt pulley 144, the first belt pulley 144 is fixed with the rotating shaft of the motor 140 through a jackscrew, the periphery of the rotating shaft 141 is sleeved with the second belt pulley 145 and is located between the third bearing seat 142 and the fourth bearing seat 143, the second belt pulley 145 is fixed with the rotating shaft 141 through a jackscrew, and the second belt pulley 145 is connected with the first belt pulley 144 through a belt 146. The second pulley 145 has an outer diameter smaller than that of the first pulley 144 to increase the rotation speed of the rotating shaft 141. When the motor 140 rotates, the motor 140 drives the powder spreading roller 120 to rotate through the belt 146 and the rotating shaft 141, the motor 140 is preferably a servo motor, and the rotating speed of the powder spreading roller 120 can be changed by controlling the rotating speed of the motor 140. The use of the belt 146 may reduce the space occupied by the compacting apparatus and increase space utilization.
Further, the tip of the one end of shop's powder roller 120 is formed with the port that communicates with the cavity, and the other end of axis of rotation 141 inserts in the port to with the one end splined connection of shop's powder roller 120, use splined connection when dismantling shop's powder roller 120, need not to dismantle drive mechanism, only need dismantle alone and shop's powder roller 120, conveniently change and maintain shop's powder roller 120, can effectively improve printing efficiency.
In the present embodiment, the other end of the rotating shaft 141 and one end of the powder spreading roller 120 are connected by a spline, but the connection between the two is not limited to this, and a connection method such as a screw connection, a coupling connection, or a key connection may be used.
According to the utility model discloses an embodiment, drive mechanism still includes: the sleeve 147 is sleeved on the outer peripheral surface of the rotating shaft 141, the sleeve 147 is located between the second pulley 145 and the third bearing seat 142, one end of the sleeve 147 abuts against one side of the second pulley 145, and the other end abuts against the inner ring of the third bearing seat 142. A shoulder is provided on the outer circumferential surface of one end of the rotation shaft 141, and the other side of the second pulley 145 abuts against the shoulder. The sleeve 147 and shoulder are provided to define the second pulley 145 and prevent the second pulley 145 from moving in the axial direction of the rotating shaft 141 during rotation. Meanwhile, the second belt pulley 145 can be conveniently mounted and dismounted, and the compaction device can be conveniently maintained.
According to the utility model discloses an embodiment, drive mechanism includes: the power input shaft of the gear box assembly is connected with the rotating shaft of the motor 140 through a coupler, and the power output shaft of the gear box assembly is connected with one end of the powder spreading roller 120 through a coupler. Similarly, for convenience of disassembly and assembly, the power output shaft of the gear box assembly can be splined to one end of the powder spreading roller 120, and the use of the gear box assembly has higher transmission efficiency than the use of the belt 146 in the above embodiment.
According to the utility model discloses an embodiment, spread powder compaction device still includes: a temperature sensor 150 and a roller 160, a center hole extending in the axial direction is provided inside the rotating shaft 141, and the temperature sensor 150 is provided in the center hole. The temperature sensor 150 is used for detecting the temperature of the powder spreading roller 120, the temperature sensor 150 is electrically connected with the main control circuit board, the temperature sensor 150, the main control circuit board and the heating device 130 form a closed-loop control system, and the closed-loop control system can adjust the temperature of the powder spreading roller 120 to a preset temperature according to a preset temperature set. In order to prevent the temperature sensor 150 from being loosened, the temperature sensor 150 and the wire are compressed using a screw. The roller 160 is rotatably disposed on a side of the second bearing block 113 away from the powder spreading roller 120, the roller 160 is disposed to facilitate movement of the compacting device, and in this embodiment, the roller 160 is a rubber-covered bearing, and the rubber-covered bearing is connected with the second bearing block 113 through a screw.
The working principle of the compaction device is as follows: the heating device 130 heats the powder spreading roller 120, the temperature sensor 150 detects the temperature of the powder spreading roller 120, and the temperature of the powder spreading roller 120 is adjusted to a preset temperature through closed-loop control. The motor 140 drives the first belt pulley 144 to rotate, the first belt pulley 144 drives the second belt pulley 145 to rotate through the belt 146, and the second belt pulley 145 drives the powder spreading roller 120 to rotate through the rotating shaft 141, so that the powder is compacted.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (9)
1. A breading compacting apparatus comprising:
a mounting frame;
the powder spreading roller is rotatably connected with the mounting frame, and a cavity extending along the axial direction of the powder spreading roller is arranged inside the powder spreading roller;
the heating device is arranged in the cavity and used for heating the powder spreading roller;
the driving mechanism is connected with one end of the powder spreading roller and used for driving the powder spreading roller to rotate axially;
the mounting bracket includes: the powder spreading roller comprises a cross beam, a supporting plate, a first bearing seat and a second bearing seat, wherein the supporting plate is arranged at the bottom of one end of the cross beam, and the first bearing seat is arranged at the upper part of the supporting plate and is in rotating fit with one end of the powder spreading roller through a bearing; and the second bearing block is arranged at the other end of the cross beam and is in running fit with the other end of the powder spreading roller through a bearing.
2. A breading compacting apparatus as defined in claim 1 wherein the drive mechanism comprises: motor and drive mechanism, the motor set up in the upper portion of crossbeam one end, drive mechanism respectively with the pivot of motor the one end of spreading the powder roller is connected, the motor passes through drive mechanism drives spread the axial rotation of powder roller.
3. A breading compacting apparatus as defined in claim 2 wherein the transmission mechanism comprises: axis of rotation, third bearing frame, fourth bearing frame, first belt pulley and second belt pulley, third bearing frame with fourth bearing frame sets up in proper order the interval and deviates from spreading powder roller one side in first bearing frame backup pad upper portion, the one end of axis of rotation pass through the bearing with fourth bearing frame normal running fit, the other end of axis of rotation passes behind third bearing frame's the bearing with spread the one end of powder roller and can dismantle the connection, first belt pulley cover is located the pivot of motor, second belt pulley cover is located the outer peripheral face of axis of rotation, and be located third bearing frame with between the fourth bearing frame, the second belt pulley pass through the belt with first belt pulley connection.
4. A breading compacting apparatus as defined in claim 3 wherein the drive mechanism further comprises: the sleeve is sleeved on the outer peripheral surface of the rotating shaft, one end of the sleeve abuts against one side of the second belt pulley, and the other end of the sleeve abuts against an inner ring of the third bearing seat; the outer peripheral face of axis of rotation one end is provided with the shaft shoulder, the opposite side of second belt pulley support lean on in the shaft shoulder.
5. The powder paving compacting device as claimed in claim 4, wherein a port communicating with the cavity is formed at an end of one end of the powder paving roller, and the other end of the rotating shaft is inserted into the port and is spline-connected to one end of the powder paving roller.
6. A breading compacting apparatus as defined in claim 2 wherein the transmission mechanism comprises: the power output shaft of the gear box component passes through the shaft coupling and is connected with the one end of spreading the powder roller.
7. A dusting compaction device according to any one of claims 1 to 6 where the heating device is an electrically heated rod arranged in the axial direction of the dusting roller within the cavity.
8. A breading compacting apparatus as claimed in claim 3, 4 or 5 further comprising: the temperature sensor, the inside of axis of rotation is provided with along axially extended centre bore, temperature sensor set up in the centre bore.
9. The breading compaction apparatus of claim 8 further comprising: the idler wheel is rotatably arranged on one side, deviating from the powder spreading roller, of the second bearing seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021909934.4U CN214324196U (en) | 2020-09-03 | 2020-09-03 | Spread powder compaction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021909934.4U CN214324196U (en) | 2020-09-03 | 2020-09-03 | Spread powder compaction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214324196U true CN214324196U (en) | 2021-10-01 |
Family
ID=77874997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021909934.4U Active CN214324196U (en) | 2020-09-03 | 2020-09-03 | Spread powder compaction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214324196U (en) |
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2020
- 2020-09-03 CN CN202021909934.4U patent/CN214324196U/en active Active
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