CN215467899U - Follow-up sand adding system for 3D sand mold printing - Google Patents
Follow-up sand adding system for 3D sand mold printing Download PDFInfo
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- CN215467899U CN215467899U CN202121348317.6U CN202121348317U CN215467899U CN 215467899 U CN215467899 U CN 215467899U CN 202121348317 U CN202121348317 U CN 202121348317U CN 215467899 U CN215467899 U CN 215467899U
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Abstract
The utility model discloses a 3D sand mold printing follow-up sand adding system, which comprises: first guide rail, two set gradually first slide rail, second slide rail and third slide rail between the first guide rail, be provided with sanding mechanism on first slide rail and the third slide rail, sanding mechanism on the first slide rail sets up with sanding mechanism symmetry on the third slide rail, be provided with the printing shower nozzle on the second slide rail, be provided with the baffle on first slide rail and the third slide rail, the baffle corresponds the setting with sanding mechanism, be provided with the one-level on first slide rail and the third slide rail and add the sand groove, the discharge gate that the one-level adds the sand groove is just to the baffle, first guide rail upside is provided with the second guide rail, it is provided with the second grade on the second guide rail to slide, the second grade adds the sand groove and is used for adding the sand to the one-level adds the sand inslot. Through setting up two sanding mechanisms, the work of paving twice can be carried out to the paving system in a reciprocating stroke, has improved the work efficiency of paving system greatly.
Description
Technical Field
The utility model belongs to the technical field of 3D printing equipment, and particularly relates to a follow-up sand adding system for 3D sand mold printing.
Background
3D printing belongs to one of the rapid prototyping technologies, and is a technology for constructing an object by using a bondable material such as powdered metal or plastic and the like in a layer-by-layer stacking and accumulating mode on the basis of a digital model file. It is often used to make models in the fields of mold making, industrial design, etc., and is now increasingly used for the direct manufacture of some products. In particular, some high value applications already have parts printed using this technique. In the model manufacturing and processing process, the paving system in the 3D sand mold printing system can only pave a sand layer once in a reciprocating stroke, and meanwhile, when sand is added, the printing system needs to stop working, and then sand is added independently, so that the working efficiency of the printing system is low, the working efficiency of the paving system is improved, and the problem that the paving system and the sand adding system need to work cooperatively when the paving system and the sand adding system need to be solved is solved.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model aims to provide a 3D sand mold printing follow-up sand adding system, two sand paving mechanisms are arranged, the paving system can carry out paving work twice in one reciprocating stroke, the working efficiency of the paving system is greatly improved, meanwhile, a secondary sand adding groove is arranged, the secondary sand adding groove can move along with the primary sand adding groove, sand can be added to the primary sand adding groove under the condition that the paving system does not stop working, the paving system and the sand adding system can be carried out in a coordinated mode, the 3D sand mold printing system can be ensured to carry out continuous printing, and the working efficiency of the 3D sand mold printing system is improved.
The utility model provides the following technical scheme:
the utility model provides a follow-up sand system that adds is printed to 3D sand mould, includes: first guide rail, two set gradually first slide rail, second slide rail and third slide rail between the first guide rail, be provided with sanding mechanism on first slide rail and the third slide rail, sanding mechanism on the first slide rail sets up with sanding mechanism symmetry on the third slide rail, be provided with the printing shower nozzle on the second slide rail, be provided with the baffle on first slide rail and the third slide rail, the baffle corresponds the setting with sanding mechanism, be provided with the one-level on first slide rail and the third slide rail and add the sand groove, the discharge gate that the one-level adds the sand groove is just to the baffle, first guide rail upside is provided with the second guide rail, it is provided with the second grade on the second guide rail to slide, the second grade adds the sand groove and is used for adding the sand to the one-level adds the sand inslot.
Preferably, the baffle is located the both sides of sanding mechanism, baffle and sanding mechanism's feed inlet department parallel and level, be provided with a plurality of deep floor in the sanding mechanism, form the sub-tank body between the inboard of sanding mechanism and the deep floor.
Preferably, the one-level sand adding groove comprises a one-level groove body and a one-level sliding mechanism, the one-level groove body is connected with the one-level sliding mechanism, and the sliding mechanism can move along the corresponding sliding rail.
Preferably, the second grade adds the sand groove and includes second grade cell body and second grade slide mechanism, the second grade cell body is connected with second grade slide mechanism, slide mechanism can follow the removal of second guide rail.
Preferably, a vibration mechanism is arranged on the primary sand adding groove and/or the secondary sand adding groove.
Preferably, the vibration mechanism is a vibration motor.
Preferably, the vibration mechanism is a motor and an eccentric block, and an output shaft of the motor is connected with the eccentric block.
Preferably, be provided with one-level induction type material detection sensor in the one-level cell body, induction type material detection sensor is used for detecting the surplus sand volume in the one-level cell body, be provided with second grade induction type material detection sensor in the second grade cell body, second grade induction type material detection sensor is used for detecting the surplus sand volume in the second grade cell body, one-level induction type material detection sensor and second grade induction type material detection sensor all are connected with the treater.
Preferably, the baffle is provided with a groove, and the depth of the groove is more than 3 mm; the distance between the discharge hole of the first-stage sand adding groove and the bottom of the groove is 1-3 mm.
Preferably, the first-stage sliding mechanism comprises a first-stage driving motor, the second-stage sliding mechanism comprises a second-stage motor, the first-stage motor and the second-stage motor are both servo motors, and the servo motors are electrically connected with the processor.
Preferably, a sand suction pump is arranged on the second guide rail and is electrically connected with the processor through a control circuit; and the sand suction pump is used for adding sand into the secondary sand adding groove.
Preferably, the discharge gate end of second grade sand adding groove is provided with discharge valve and telescoping device, the output and the discharge valve of telescoping device are connected, telescopic machanism is electric telescopic handle or pneumatic cylinder.
Preferably, the volume of the primary tank body is 3-4 times of that of the sand paving mechanism, and the volume of the secondary tank body is 2-4 times of that of the primary tank body.
Preferably, the cross section of a secondary groove body in the secondary sand adding groove is of a trapezoidal structure, and an included angle alpha between a trapezoidal inclined plane and a vertical plane is larger than or equal to a resting angle gamma of the sand pile.
Preferably, the sand grain diameter adopted during 3D printing is R, the width of a sand outlet of the sand paving mechanism is L, an included angle between two inclined plates of a shell of the sand paving mechanism is β, and R, L and β satisfy the following relationship:
L＝M·[Sinγ/Sin（β/2）]·R；
wherein the units of gamma and beta are degrees; r, L is in mm, and M is a constant with a value ranging from 5 to 20.
Preferably, the use method of the 3D sand mold printing follow-up sand adding system comprises the following steps:
s1, adding sand, wherein the first-stage sand adding groove adds sand into the sand paving mechanism to ensure that the sand adding groove is in a full sand state;
s2, paving, namely, moving a first slide rail, a second slide rail and a third slide rail along the first guide rail to perform spraying and sanding, moving the first slide rail, the second slide rail and the third slide rail in one direction to perform spraying and sanding, moving the first slide rail in the other direction to perform sanding by a sanding mechanism on the first slide rail, performing spraying by the printing nozzle and sanding by a sanding mechanism on the second slide rail, and circularly performing printing in the same way;
s3, adding sand by the sand paving mechanism, wherein when the sand paving mechanism moves for a corresponding specified stroke, the primary sand adding groove moves along the slide rail to add sand into the sand paving mechanism;
s4, detecting the residual quantity of sand in the primary sand adding groove, and adding sand into the primary sand adding groove by the secondary sand adding groove when the sand content in the primary sand adding groove is less than a preset threshold value;
and S5, detecting the residual quantity of the sand in the secondary sand adding groove, and adding sand into the secondary sand adding groove by the sand suction pump when the sand content in the secondary sand adding groove is less than a preset threshold value.
Compared with the prior art, the utility model has the following beneficial effects:
(1) according to the 3D sand mold printing follow-up sand adding system, two sand paving mechanisms are arranged, and the paving system can perform two paving operations in one reciprocating stroke, so that the working efficiency of the paving system is greatly improved, and the printing time can be shortened by 40%.
(2) According to the 3D sand mold printing follow-up sand adding system, the secondary sand adding groove is arranged, the secondary sand adding groove can move along with the primary sand adding groove, sand can be added to the primary sand adding groove under the condition that the paving system does not stop working, the paving system and the sand adding system can be performed in a cooperation mode, continuous printing of the 3D sand mold printing system is guaranteed, waiting for sand adding and feeding time and printing reset invalid working time are not needed, and zero waiting and printing efficiency maximization are achieved.
(3) According to the 3D sand mold printing follow-up sand adding system, the sand suction pump is arranged, and when the residual sand content in the secondary sand adding groove is smaller than the preset threshold value, the sand suction pump can add sand to the secondary sand adding groove, so that the automation and the intellectualization of sand adding of the system are realized, and the working efficiency of the system is improved.
(4) According to the 3D sand mold printing follow-up sand adding system, through the relation among the sand grain diameter R, the width L of the sand outlet of the sand paving mechanism and the included angle beta between the two inclined plates of the sand paving mechanism, the sand paving mechanism can smoothly pave sand, and the sand paving effect is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a partial schematic view of the present invention.
FIG. 3 is a schematic cross-sectional view of a secondary channel of the present invention.
Fig. 4 is a schematic view of the positions of the first, second and third slide rails of the present invention.
Figure 5 is a schematic view of a primary channel of the present invention.
In the figure: 1. a first guide rail; 2. a first slide rail; 3. a second slide rail; 4. a third slide rail; 5. printing a spray head; 6. a second guide rail; 7. a secondary sand adding groove; 8. a telescoping device; 9. a first-stage sand adding tank; 10. a baffle plate; 11. a sand paving mechanism; 12. a sand suction pump; 13. a secondary trough body; 14. a primary trough body.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings. It is to be understood that the described embodiments are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1-4, the following sand adding system for 3D sand mold printing includes: the automatic sand coating machine comprises a first guide rail 1, a first slide rail 2, a second slide rail 3 and a third slide rail 4 are sequentially arranged between the two first guide rails 1, a sand coating mechanism 11 is arranged on the first slide rail 2 and the third slide rail 4, the sand coating mechanism 11 on the first slide rail 2 and the sand coating mechanism 11 on the third slide rail 4 are symmetrically arranged, the sand coating mechanism 11 is used for sand coating treatment, a printing nozzle 5 is arranged on the second slide rail 3, the printing nozzle 5 is used for spraying glue and bonding a sand layer, a baffle 10 is arranged on the first slide rail and the third slide rail, the baffle 10 and the sand coating mechanism 11 are correspondingly arranged, the baffle 10 and the sand coating mechanism 11 are positioned on the same horizontal plane, a primary sand adding groove 9 is arranged on the first slide rail 2 and the third slide rail 4, a discharge port of the primary sand adding groove 9 is over against the baffle 10, a second guide rail 6 is arranged on the upper side of the first guide rail 1, the second guide rail 6 is provided with a second-stage sand adding groove 7 in a sliding manner, and the second-stage sand adding groove 7 is used for adding sand into the first-stage sand adding groove 9.
The one-level adds sand groove 9 and includes one-level cell body and one-level slide mechanism, one-level cell body is connected with one-level slide mechanism, slide mechanism can follow corresponding slide rail and remove, one-level slide mechanism includes one-level driving motor, driving motor drives one-level cell body through connecting the gyro wheel and removes, perhaps driving motor is through setting up belt and belt pulley, and one-level cell body is connected with the belt to realize that one-level cell body removes.
The second-stage sand adding groove 7 comprises a second-stage groove body and a second-stage sliding mechanism, the second-stage groove body is connected with the second-stage sliding mechanism, the sliding mechanism can move along the second guide rail 6, and the second-stage sand adding groove 7 can move along with the movement of the positions of the first slide rail 2, the second slide rail 3 and the third slide rail 4 and can move in cooperation with the first slide rail 2, the second slide rail 3 and the third slide rail 4. The second grade slide mechanism includes the second grade motor, the second grade motor drives the second grade cell body through connecting the gyro wheel and removes, perhaps the second grade motor is through setting up belt and belt pulley, and the second grade cell body is connected with the belt to realize that the second grade cell body removes.
And the primary sand adding groove 9 and the secondary sand adding groove 7 are both provided with a vibration mechanism. The vibrating mechanism is a vibrating motor, and can effectively prevent the sand in the first-stage sand adding groove 9 and the second-stage sand adding groove 7 from being blocked, so that the sand can smoothly flow out, and the working stability of the system is improved.
Example two:
different from the first embodiment, the vibration mechanism is a motor and an eccentric block, and an output shaft of the motor is connected with the eccentric block.
Be provided with one-level induction type material detection sensor in the one-level cell body 14, induction type material detection sensor is used for detecting the surplus sand volume in the one-level cell body 14, be provided with second grade induction type material detection sensor in the second grade cell body 13, second grade induction type material detection sensor is used for detecting the surplus sand volume in the second grade cell body 13, one-level induction type material detection sensor and second grade induction type material detection sensor all are connected with the treater.
A groove is formed in the baffle 10, and the groove depth of the groove is larger than 3 mm; the distance between the discharge hole of the first-stage sand adding groove and the bottom of the groove is 1-3 mm. The thickness and the uniformity of the sand layer are ensured. The primary motor and the secondary motor are both servo motors, and the servo motors are electrically connected with the processor.
A sand suction pump 12 is arranged on the second guide rail 6, and the sand suction pump 12 is electrically connected with the processor through a circuit; the sand suction pump 12 is used for adding sand into the secondary sand adding groove 7.
The discharge gate end of second grade sand adding groove 7 is provided with discharge valve and telescoping device 8, telescoping device 8's output is connected with discharge valve, telescopic machanism is electric telescopic handle or pneumatic cylinder, controls the flexible action of telescoping device 8 through the treater, controls opening and closing of the discharge gate of second grade sand adding groove 7. The volume of the primary tank body 14 is 3-4 times of that of the sand paving mechanism 11, and the volume of the secondary tank body 13 is 2-4 times of that of the primary tank body 14. The cross section of the second-stage groove body 13 in the second-stage sand adding groove 7 is of a trapezoidal structure, and the included angle alpha between the trapezoidal inclined plane and the vertical plane is larger than or equal to the resting angle gamma of the sand pile, so that sand accumulation in the second-stage groove body 13 is avoided, and the working reliability of the device is improved.
Example three:
the use method of the 3D sand mold printing follow-up sand adding system comprises the following steps:
s1, adding sand, wherein the first-stage sand adding groove adds sand into the sand paving mechanism to ensure that the sand adding groove is in a full sand state;
s2, paving, namely, moving a first slide rail, a second slide rail and a third slide rail along the first slide rail to perform spraying and sanding, moving the first slide rail, the second slide rail and the third slide rail in one direction to perform spraying and sanding, moving the first slide rail in the opposite direction to perform sanding by a sanding mechanism on the first slide rail, performing spraying by the printing nozzle, and sanding by a sanding mechanism on the second slide rail, and performing printing in a circulating manner;
s3, adding sand by the sand paving mechanism, wherein when the sand paving mechanism moves for a corresponding specified stroke, the primary sand adding groove 9 moves along the slide rail to add sand into the sand paving mechanism;
s4, detecting the residual quantity of sand in the primary sand adding groove, and adding sand into the primary sand adding groove by the secondary sand adding groove when the sand content in the primary sand adding groove is less than a preset threshold value;
and S5, detecting the residual quantity of the sand in the secondary sand adding groove, and adding sand into the secondary sand adding groove by the sand suction pump when the sand content in the secondary sand adding groove is less than a preset threshold value.
Example four:
the sand grain size that adopts when 3D prints is R, the width of the sand outlet of sanding mechanism is L, and the contained angle between two swash plates of sanding mechanism's shell is beta, R, L, beta satisfy the following relation between: l ═ M · [ Sin γ/Sin (β/2) ], R; wherein the units of gamma and beta are degrees; r, L is in mm, and M is a constant with a value ranging from 5 to 20. When M is greater than 20, the width L of sand outlet is great, and the sand layer of spreading out is thick, and when M is less than 5, the width L of sand outlet is less, and the sand layer of spreading out is thin, can't satisfy 3D print job's needs.
The device obtained by the technical scheme is a 3D sand mold printing follow-up sand adding system, before the system works, a primary sand adding groove adds sand into a sand paving mechanism to enable the sand adding groove to be in a full sand state, then a first slide rail, a second slide rail and a third slide rail move along the first slide rail to perform spraying and sand paving, when the first slide rail moves towards one direction, a printing spray head performs spraying, a sand paving mechanism on the first slide rail performs sand paving, when the first slide rail moves in the opposite direction, the printing spray head performs spraying, a sand paving mechanism on the second slide rail performs sand paving, and the steps are circulated to perform printing; when the sand paving mechanism moves for a corresponding specified stroke, the primary sand adding groove 9 moves along the slide rail to add sand into the sand paving mechanism; when the sand content in the primary sand adding groove is smaller than a preset threshold value, the secondary sand adding groove adds sand into the primary sand adding groove; when the sand content in the secondary sand adding groove is smaller than the preset threshold value, the secondary sand adding groove moves to the position of the sand suction pump 12, and the sand suction pump 12 adds sand into the secondary sand adding groove 7. Through setting up two sanding mechanisms, the paving system can carry out twice work of paving in a reciprocal stroke, the work efficiency of paving system has been improved greatly, set up the second grade simultaneously and add the sand tank, the second grade adds the sand tank and can remove along with the one-level adds the sand tank, can add the sand to the one-level adds the sand tank under the condition that the paving system does not stop work, make paving system and add the sand system and go on in coordination, guarantee that 3D sand mould printing system can print in succession, the work efficiency of 3D sand mould printing system has been improved.
The working principle of the sand paving mechanism and the working principle of the printing nozzle are both the prior art, and are not described herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention; any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a follow-up sand system that adds is printed to 3D sand mould which characterized in that includes: the automatic sand feeding device comprises first guide rails (1), a first slide rail (2), a second slide rail (3) and a third slide rail (4) are sequentially arranged between the two first guide rails (1), a sand paving mechanism (11) is arranged on the first slide rail (2) and the third slide rail (4), the sand paving mechanism (11) on the first slide rail (2) and the sand paving mechanism (11) on the third slide rail (4) are symmetrically arranged, a printing spray head (5) is arranged on the second slide rail (3), baffles (10) are arranged on the first slide rail and the third slide rail, the baffles (10) are arranged corresponding to the sand paving mechanism (11), a one-level sand feeding groove (9) is arranged on the first slide rail (2) and the third slide rail (4), a discharge hole of the one-level sand feeding groove (9) is right aligned to the baffles (10), a second guide rail (6) is arranged on the upper side of the first guide rail (1), and a second-level sand feeding groove (7) is arranged on the second guide rail (6) in a sliding manner, and the secondary sand adding groove (7) is used for adding sand into the primary sand adding groove (9).
2. The 3D sand mold printing follow-up sand adding system according to claim 1, wherein the baffle plates (10) are located on two sides of the sand paving mechanism (11), the baffle plates (10) are parallel and level to a feed inlet of the sand paving mechanism (11), a plurality of reinforcing rib plates are arranged in the sand paving mechanism (11), and a sub-groove body is formed between the inner side of the sand paving mechanism (11) and the reinforcing rib plates.
3. The 3D sand mold printing follow-up sand adding system according to claim 1, wherein the primary sand adding groove (9) comprises a primary groove body (14) and a primary sliding mechanism, the primary groove body (14) is connected with the primary sliding mechanism, and the sliding mechanism can move along a corresponding sliding rail.
4. The 3D sand mold printing follow-up sand adding system according to claim 1 or 3, wherein the secondary sand adding groove (7) comprises a secondary groove body and a secondary sliding mechanism, the secondary groove body is connected with the secondary sliding mechanism, and the sliding mechanism can move along the second guide rail (6).
5. The 3D sand mold printing follow-up sand adding system according to claim 1, wherein a vibration mechanism is arranged on the primary sand adding groove (9) and/or the secondary sand adding groove (7).
6. The 3D sand mold printing follow-up sand adding system according to claim 5, wherein the vibration mechanism is a vibration motor.
7. The 3D sand mold printing follow-up sand adding system according to claim 5, wherein the vibration mechanism is a motor and an eccentric block, and an output shaft of the motor is connected with the eccentric block.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121348317.6U CN215467899U (en) | 2021-06-17 | 2021-06-17 | Follow-up sand adding system for 3D sand mold printing |
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| CN202121348317.6U CN215467899U (en) | 2021-06-17 | 2021-06-17 | Follow-up sand adding system for 3D sand mold printing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458328A (en) * | 2021-06-17 | 2021-10-01 | 郑州中兴三维科技有限公司 | Follow-up sand adding system for 3D sand mold printing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458328A (en) * | 2021-06-17 | 2021-10-01 | 郑州中兴三维科技有限公司 | Follow-up sand adding system for 3D sand mold printing |
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