CN210059706U

CN210059706U - Sand mold 3D printer adopting double-frame lifting device

Info

Publication number: CN210059706U
Application number: CN201920573571.2U
Authority: CN
Inventors: 曹正文; 熊志越; 孙佳东; 练小金
Original assignee: Eli Kay Polytron Technologies Inc
Current assignee: Eli Kay Polytron Technologies Inc
Priority date: 2019-04-25
Filing date: 2019-04-25
Publication date: 2020-02-14
Anticipated expiration: 2029-04-25

Abstract

The utility model discloses a sand mould 3D printer adopting a double-frame lifting device, which comprises a double-frame lifting device, a work box, a printing frame for paving sand and printing and a sand supply system which is arranged on the printing frame and is used for printing sand; the double-frame lifting device is arranged in the printing frame and used for lifting the working box, and the working box is arranged at the top of the double-frame lifting device. The utility model discloses a two frame elevating gear print the lift, can improve and print the holistic stability of in-process equipment, the utility model provides an operating system adopts single lead screw to carry out the transmission, can reduce the error, improves the precision.

Description

Sand mold 3D printer adopting double-frame lifting device

Technical Field

The utility model belongs to the technical field of sand mould 3D prints, especially, relate to an adopt double-frame elevating gear's sand mould 3D printer.

Background

The 3D printing technique is also known as a rapid prototyping manufacturing technique. The basic principle is that a material with a certain thickness is repeatedly printed on a platform and is circularly reciprocated until a whole formed part is generated. The technological engineering is that three-dimensional solid modeling is created by using three-dimensional modeling software, then the designed solid modeling is dispersed and layered through processing software of rapid prototyping equipment, then processed data is input into equipment for manufacturing, and finally certain post-processing is needed to obtain a final finished product.

3D printing technology has developed to this day, and its center of development has shifted from 3D printing prototypes to rapid manufacturing and rapid direct manufacturing of metal parts. The 3D printing technology is not only applied to a design process, but also extends to the manufacturing field. In the manufacturing industry, the main factor limiting the time of product market is the design and manufacturing time of the mold and the model, and 3D printing is an auxiliary means for rapid design.

At present, the 3D equipment of domestic current is printing the in-process, adopts and reciprocates print frame or reciprocates the work box and prints, when adopting to remove print frame to print, and equipment totality power consumption is great, and print frame is last to be constructed more, reciprocates inconveniently, so adopt to reciprocate the work box and print more rationally. However, the structure of the up-down lifting device adopted at present is unstable in the operation process, so that the working box is not stable during printing, and the printing is influenced.

SUMMERY OF THE UTILITY MODEL

Based on the problem that the background art exists, the utility model aims to provide an adopt two frame elevating gear's sand mould 3D printer to promote the stability of 3D printer at the printing in-process.

In order to achieve the purpose, the utility model provides a technical scheme does:

the utility model relates to a sand mould 3D printer adopting a double-frame lifting device, which comprises a double-frame lifting device, a work box, a printing frame for sand paving and printing and a sand supply system which is arranged on the printing frame and is used for printing and supplying sand; the double-frame lifting device is arranged in the printing frame and used for lifting the working box, and the working box is arranged at the top of the double-frame lifting device.

Preferably, the double-frame lifting device comprises a motor, a screw rod, a transmission mechanism, a lifting base, a workbench, a bottom plate, an intermediate plate, a first guide rod and a second guide rod, wherein the motor is arranged on the lifting base, the screw rod is arranged on the lifting base, and the motor is in transmission connection with the screw rod through the transmission mechanism; the first guide rods and the second guide rods are respectively provided with four, the second guide rods are positioned on the inner sides of the first guide rods, the bottoms of the first guide rods are connected to the lifting base, the first guide rods penetrate through four corners of the bottom plate, the tops of the first guide rods are connected to four corners of the middle plate, the bottoms of the second guide rods are connected to the bottom plate, the second guide rods penetrate through the middle plate, and the tops of the second guide rods are connected to the workbench; the top of the screw rod is connected with the middle plate through a bearing, the screw rod is connected with the bottom plate through a sliding block, and the working box is arranged on the working table. This double-frame elevating gear in 3D printer adopts same lead screw and hold-in range to carry out the transmission, can significantly reduce because of the error that the tensioning brought, adopts the double-frame structure that first guide arm and second guide arm are constituteed simultaneously, can improve the stability of lift in-process equipment. When the workbench is at the lowest point after descending, the working box leaves the workbench and is arranged on a ground rail of the printing frame.

Preferably, the printing frame comprises a printing base, a cross beam, a ground rail, a sand paving beam and a printing beam; the crossbeam be equipped with two, two crossbeam parallels erect on printing the base, the crossbeam below is located to the ground rail, spread the sand roof beam and erect respectively on the crossbeam and with crossbeam sliding connection with printing roof beam both ends, the printing roof beam on be equipped with a plurality of print shower nozzles. The printing beam and the sand paving beam on the printing frame are connected to the cross beam through the linear motor, and when printing is conducted, the sand paving beam and the printing beam can move back and forth on the cross beam to perform sand paving and printing.

Preferably, the sand supply system comprises a lifting machine, sand boxes and a sand supply device in turn, wherein the input end of the sand supply device in turn is connected with the sand boxes, and the input end of the sand boxes is connected with the lifting machine. The sand supply system can play a role of automatically supplying sand, the lifting machine transports the sand to the sand box, the sand box is used as a storage box of the sand, and when the sand in the sand supply device is less than a certain amount, the sand is automatically supplied to the sand supply device.

Preferably, drive mechanism include the action wheel, follow driving wheel and hold-in range, the action wheel be connected with motor drive, the action wheel passes through the hold-in range and is connected with the transmission of following driving wheel, follow driving wheel and screw connection. Adopt the hold-in range, can improve the accuracy of going up and down.

Preferably, the printing base comprises a fixed base, an adjusting seat and a side support; the fixed base locate the both sides of ground rail respectively, adjust the seat and install in fixed base's below, the both ends at fixed base are installed to the side support, the crossbeam install on the side support. The adjusting seat can be used for adjusting the overall height of the equipment, and the printing of the working box is not affected.

Preferably, the sand device that supplies in turn include that two deposit sand jar, agitating unit, breaker and weighing device, breaker locate the bottom of depositing the sand jar, inside agitating unit located the sand jar, the top of depositing the sand jar was equipped with into sand mouth, advance the sand mouth and be connected with the output of sand box through the solenoid valve, deposit the sand jar and pass through the installing frame and fix on the installation roof beam, the both ends of installation roof beam fix on the crossbeam and with shop's sand roof beam parallel arrangement, weighing device install and deposit on the sand jar. Set up two and deposit the sand jar and can realize supplying sand in turn, when reducing the whole volume of equipment, can also improve the efficiency of printing.

Preferably, the lifting machine comprises a lifting frame, a driving motor, a lifting bucket frame, a transmission device, a lifting rail and a turning rail, wherein the lifting rail and the turning rail are respectively installed on the inner side surfaces of two upright posts of the lifting frame, and the driving motor is in transmission connection with the lifting bucket frame through the transmission device; promote bucket frame and promote track and upset track sliding connection, the promotion track be the linear type, the orbital lower part of upset is parallel with promoting the track, the top is to one side bending. The sand is conveyed to the sand box from bottom to top by the hoister for storage, and compared with manual operation, the sand box is more labor-saving and convenient.

Preferably, agitating unit include agitator motor, pivot, little stirring rake, big stirring rake and reinforcing plate, agitator motor locate the bottom of depositing the sand jar, agitator motor is connected with the pivot transmission, inside the pivot stretches into to deposit the sand jar, little stirring rake and big stirring rake from bottom to top install in proper order in the pivot, the reinforcing plate is connected on big stirring rake, little stirring rake and big stirring rake cross arrangement. The materials in the sand storage tank are stirred from top to bottom by the stirring device, so that the sand is ensured to be smooth.

Preferably, breaker include two sand outlets and a plurality of broken mouth, the upper end of sand outlet is located to broken mouth, sand outlet, broken mouth and deposit the inside three intercommunication of sand jar. The sand flows out from the sand outlet after being scattered by the block-shaped sand from top to bottom through the crushing port and enters the sand paving beam.

Preferably, the lifting frame comprises two upright posts, a bottom side supporting seat, a fixed top plate and a plurality of reinforcing rods, the two upright posts are vertically arranged on two sides of the bottom side supporting seat, the reinforcing rods are connected between the two upright posts at intervals in parallel, the bottom side supporting seat and the upright posts form a certain inclination angle after being connected, the fixed top plate is fixed at the tops of the two upright posts and is parallel to the reinforcing rods, and the reinforcing rods are provided with installation angle blocks. Form a stable triangular support structure between two stands and the bottom side supporting seat, two stands and bottom side supporting seat can be fixed on ground or other planes, and the operation in-process is more stable, and the stiffener can also improve the steadiness of structure.

Preferably, the transmission device comprises two driving wheels, a wheel shaft, two driven fixed wheels and a transmission chain, the driving wheels are in transmission connection with the driving motor through the wheel shaft, the driven fixed wheels are hung below the fixed top plate of the lifting frame, and the driven fixed wheels are in transmission connection with the driving wheels through the transmission chain. What follow driving wheel adopted is the fixed wheel, can simplify the structure of equipment on the one hand, the installation of being convenient for, and on the other hand, sound construction is more safe and stable in the promotion in-process.

Preferably, the back of the lifting hopper frame is provided with an upper transmission shaft and a lower transmission shaft, the upper transmission shaft is connected to the upper part of the lifting hopper frame, the lower transmission shaft is connected to the lower part of the lifting hopper frame, pulleys are respectively arranged on two sides of the upper transmission shaft and two sides of the lower transmission shaft, the pulleys connected to two sides of the upper transmission shaft are positioned in the overturning track, and the pulleys connected to two sides of the lower transmission shaft are positioned in the lifting track; the lower transmission shaft is provided with a lifting wheel, and the lifting wheel is in transmission connection with the transmission chain. The main effect that the lower transmission shaft is connected through hoisting wheel and drive chain is to promote the bucket frame upwards, goes up the transmission shaft and plays the upset that drives promotion bucket frame, when promoting the bucket frame and removing the top of lifting frame, can unload in orbital automatic upset under pulling.

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

the utility model discloses a two frame elevating gear print the lift, can improve and print the holistic stability of in-process equipment, the utility model provides an operating system adopts single lead screw to carry out the transmission, can reduce the error, improves the precision.

The utility model discloses a supply the automatic sand that supplies of sand system, work efficiency is high, reduces the cost of labor, and degree of automation is higher.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view of the double-frame lifting device of the present invention;

fig. 3 is a schematic structural diagram of a printing frame according to the present invention;

FIG. 4 is a schematic structural diagram of the transmission mechanism of the present invention;

fig. 5 is a schematic structural view of a printing base according to the present invention;

FIG. 6 is a schematic view of a sand supply system of the present invention;

fig. 7 is a schematic structural diagram of the elevator of the present invention;

FIG. 8 is a schematic structural view of the sand tank of the present invention;

FIG. 9 is an enlarged view of A in FIG. 8;

FIG. 10 is a schematic structural view of a stirring device according to the present invention;

fig. 11 is another schematic structural diagram of the hoist of the present invention;

fig. 12 is a partial schematic view of the elevator of the present invention.

Detailed Description

For further understanding of the present invention, the present invention will be described in detail with reference to the following examples, which are provided for illustration of the present invention but are not intended to limit the scope of the present invention.

As shown in fig. 1, the present embodiment relates to a sand mold 3D printer using a double-frame lifting device, which includes a double-frame lifting device 1, a work box 2, a printing frame 3, and a sand supply system 4; double-frame lifting device 1 locate printing frame 3 inside be used for printing the lift of in-process work box 2, the work box arrange double-frame lifting device 1 top in, supply sand system 4 install and be used for printing on printing frame 3 and supply sand, printing frame 3 be used for the sanding to print.

As shown in fig. 2, the double-frame lifting device 1 includes a motor 11, a screw rod 12, a transmission mechanism 13, a lifting base 14, a worktable 15, a bottom plate 16, an intermediate plate 17, a first guide rod 18 and a second guide rod 19, wherein the motor 11 is installed on the lifting base 14, the screw rod 12 is installed on the lifting base 14, and the motor 11 is in transmission connection with the screw rod 12 through the transmission mechanism 13; the number of the first guide rods 18 and the number of the second guide rods 19 are four, the second guide rods 19 are located on the inner side of the first guide rods 18, the bottoms of the first guide rods 18 are connected to the lifting base 14, the first guide rods 18 penetrate through four corners of the bottom plate 16, the tops of the first guide rods 18 are connected to four corners of the middle plate 17, the bottoms of the second guide rods 19 are connected to the bottom plate 16, the second guide rods 19 penetrate through the middle plate 17, and the tops of the second guide rods 19 are connected to the workbench 15; the top of the screw rod 12 is connected with an intermediate plate 17 through a bearing, the screw rod 12 is connected with a bottom plate 16 through a sliding block 10, and the working box 2 is arranged on a working table 15. The double-frame lifting device 1 adopts the same screw rod 12 and the synchronous belt for transmission, so that errors caused by tensioning can be greatly reduced, and meanwhile, the double-frame structure consisting of the first guide rod 18 and the second guide rod 19 can improve the stability of equipment in the lifting process. When the table 15 is lowered to the lowest point, the work box 2 leaves the table 15 and rests on the ground rail 33 of the print frame 3. After the screw rod 12 is started, the slider 10 on the screw rod 12 is driven to move up and down, the slider 10 drives the bottom plate 16 to move up and down, so that the bottom plate 16 pushes the workbench 15 to move up and down through the second guide rod 19, and the first guide rod 18 and the second guide rod 19 are both of telescopic structures.

As shown in fig. 3, the printing frame 3 includes a printing base 31, a cross beam 32, a ground rail 33, a sanding beam 34, and a printing beam 35; crossbeam 32 be equipped with two, two crossbeams 32 and erect on printing base 31 in parallel, crossbeam 32 below is located to ground rail 33, shop's sand roof beam 34 and print roof beam 35 both ends erect respectively on crossbeam 32, and with crossbeam 32 sliding connection, print roof beam 35 on be equipped with a plurality of print shower nozzles. The printing beam 35 and the sanding beam 34 on the printing frame 3 are connected to the cross beam 32 through a linear motor, and the sanding beam 34 and the printing beam 35 can move back and forth on the cross beam 32 for sanding and printing during printing.

As shown in fig. 4, the transmission mechanism 13 includes a driving wheel 131, a driven wheel 132 and a timing belt 133, the driving wheel 131 is in transmission connection with the motor 11, the driving wheel 131 is in transmission connection with the driven wheel 132 through the timing belt 133, and the driven wheel 132 is connected with the lead screw 12. The lifting accuracy can be improved by adopting the transmission mode of the synchronous belt 133.

As shown in fig. 5, the printing base 31 includes a fixed base 311, an adjusting base 312, and a side support 313; the fixed base 311 is respectively arranged at two sides of the ground rail 33, the adjusting base 312 is arranged below the fixed base 311, the side supports 313 are arranged at two ends of the fixed base 311, and the cross beam 32 is arranged on the side supports 313. The adjustment seat 312 may be used to adjust the overall height of the apparatus, ensuring that printing of the work box 2 is not affected.

As shown in fig. 6, the sand supply system 4 includes a lifting machine 41, a sand box 42 and a sand alternate supply device 43, wherein the sand box 42 is connected to an input end of the sand alternate supply device 43, and the lifting machine 41 is connected to an input end of the sand box 42. The sand supply system 4 can function as an automatic sand supply, the hoist 41 transports sand into the sand box 42, the sand box 42 serves as a storage tank for the sand, and the sand supply device 43 is automatically supplied with sand when the sand in the sand supply device 43 is less than a certain amount.

As shown in fig. 8, the sand supply device 43 in turn comprises two sand storage tanks 431, a stirring device 432, a crushing device 433 and a weighing device 434, wherein the crushing device 433 is arranged at the bottom of the sand storage tanks 431, the stirring device 432 is arranged inside the sand storage tanks 431, the top of the sand storage tanks 431 is provided with a sand inlet 4311, the sand inlet 4311 is connected with the output end of the sand box 42 through an electromagnetic valve 435, the sand storage tanks 431 are fixed on a mounting beam 437 through a mounting frame 436, two ends of the mounting beam 437 are fixed on the cross beam 32 and are arranged in parallel with the sand paving beam 34, and the weighing device 434 is arranged on the sand storage tanks 431. Set up two and deposit sand jar 431 and can realize supplying sand in turn, when reducing the whole volume of equipment, can also improve the efficiency of printing.

As shown in fig. 7, 11 and 12, the lifter 41 includes a lifting frame 411, a driving motor 412, a lifting bucket frame 413, a transmission device 414, a lifting rail 415 and a turning rail 416, the lifting rail 415 and the turning rail 416 are respectively installed on inner side surfaces of two upright posts 4111 of the lifting frame 411, and the driving motor 412 is in transmission connection with the lifting bucket frame 413 through the transmission device 414; the elevating frame 413 is slidably connected to the elevating rail 415 and the turning rail 416, the elevating rail 415 is linear, the turning rail 416 has a lower portion parallel to the elevating rail 415 and a top portion bent to one side. The sand is conveyed to the sand box 42 from bottom to top by the lifting machine 41 for storage, and compared with manual operation, the sand conveying device saves more labor, is convenient to convey the sand to the sand box 42 from bottom to top by the lifting machine 41 for storage, and is more labor-saving and convenient compared with manual operation.

Lifting frame 411 include two stands 4111, bottom side supporting seat 4112, fixed roof 4113 and a plurality of reinforcing bars 4114, two stands 4111 install perpendicularly in the both sides of bottom side supporting seat 4112, reinforcing bars 4114 are connected between two stands 4111 at intervals in parallel, bottom side supporting seat 4112 is connected with stand 4111 and then forms certain inclination angle, fixed roof 4113 fix at the top of two stands 4111 and parallel with reinforcing bars 4114, be equipped with installation corner block 4115 on reinforcing bars 4114. Form a stable triangle bearing structure between two stands 4111 and bottom side supporting seat 4112, two stands 4111 and bottom side supporting seat 4112 can be fixed on ground or other planes, and the operation in-process is more stable, and reinforcing bar 4114 can also improve the steadiness of structure.

The transmission device 414 comprises two driving wheels 4141, a wheel shaft 4142, two driven fixed wheels 4143 and a transmission chain 4144, wherein the driving wheels 4141 are in transmission connection with the driving motor 412 through the wheel shaft 4142, the driven fixed wheels 4143 are hung below the fixed top plate 4113, and the driven fixed wheels 4143 are in transmission connection with the driving wheels 4141 through the transmission chain 4144. What follow driving wheel adopted is the fixed wheel, can simplify the structure of equipment on the one hand, the installation of being convenient for, and on the other hand, sound construction is more safe and stable in the promotion in-process.

An upper transmission shaft 417 and a lower transmission shaft 418 are arranged on the back of the lifting hopper frame 413, the upper transmission shaft 417 is connected to the upper part of the lifting hopper frame 413, the lower transmission shaft 418 is connected to the lower part of the lifting hopper frame 413, pulleys 419 are respectively arranged on two sides of the upper transmission shaft 417 and the lower transmission shaft 418, wherein the pulleys 419 connected to two sides of the upper transmission shaft 417 are positioned in the overturning track 416, and the pulleys 419 connected to two sides of the lower transmission shaft 418 are positioned in the lifting track 415; the lower transmission shaft 418 is provided with a lifting wheel 4145, and the lifting wheel 4145 is in transmission connection with a transmission chain 4144. The main function of the lower transmission shaft 418 connected with the transmission chain 4144 through the lifting wheel 4145 is to lift the lifting bucket frame 413 upwards, and the upper transmission shaft 417 plays a role in driving the lifting bucket frame 413 to overturn, so that when the lifting bucket frame 413 moves to the top of the lifting frame 411, the lifting bucket frame can automatically overturn and unload under the traction of a rail.

As shown in fig. 10, the stirring device 432 includes a stirring motor 4321, a rotating shaft 4322, a small stirring paddle 4323, a large stirring paddle 4324 and a reinforcing plate 4325, the stirring motor 4321 is disposed at the bottom of the sand storage tank 431, the stirring motor 4321 is in transmission connection with the rotating shaft 4322, the rotating shaft 4322 extends into the sand storage tank 431, the small stirring paddle 4323 and the large stirring paddle 4324 are sequentially installed on the rotating shaft 4322 from bottom to top, the reinforcing plate 4325 is connected to the large stirring paddle 4324, and the small stirring paddle 4323 and the large stirring paddle 4324 are arranged in a crossing manner. The materials in the sand storage tank 431 are stirred from top to bottom through the stirring device 432, so that the sand is ensured to be smooth.

As shown in fig. 9, the crushing device 433 includes two sand outlets 4331 and a plurality of crushing ports 4332, the crushing ports 4332 are disposed at the upper ends of the sand outlets 4331, and the sand outlets 4331, the crushing ports 4332 are communicated with the inside of the sand storage tank 431. The sand flows out from the sand outlet after being broken up by the crushing port 4332 from top to bottom and enters the sand paving beam 34.

The utility model discloses the theory of operation:

before printing is started, the work box 2 is moved above the double-frame lifting device 1 via the ground rail 33, and the double-frame lifting device 1 is lifted up to lift the work box 2 from the ground rail 33. The elevator 41 transports sand to the sand box 42 for storage, and when the weighing device 434 detects that the sand in the sand storage tank 431 is too low, the solenoid valve 435 is opened, sand enters the sand storage tank 431 from the sand box 42, and when the sand in the sand storage tank 431 reaches a certain amount, the solenoid valve is closed. The sand in the sand storage tank 431 is stirred by the stirring device 432, and is crushed by the crushing device 433 and enters the sand paving beam 35.

When printing is started, the work box 2 is at the highest position in the operation of the double-frame lifting device 1. The sand paving beam 35 is driven by the linear motor to move from one end of the cross beam 32 to the other end, and after sand paving is completed, the sand paving beam 35 returns to the original position; the printing beam 36 is driven by the linear motor to move from one end of the cross beam 32 to the other end, and the plurality of nozzles reset after printing is realized; when one layer is printed, the double-frame lifting device 1 descends by a certain height, the sand paving beam 35 moves for sand paving again, the printing beam 36 moves for printing again, and the sand paving and printing are repeated until the model printing is finished. At this time, the double-frame lifting device 1 is lowered to the bottommost part, the work box 2 leaves the double-frame lifting device 1 and returns to the ground rail 33, the work box is moved out through the ground rail 3, and the whole printing process is completed.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is merely an embodiment of the present invention, and the actual structure is not limited thereto. Therefore, those skilled in the art should understand that they can easily and effectively implement the present invention without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides an adopt two frame elevating gear's sand mould 3D printer which characterized in that: the sand-spreading and sand-supplying device comprises a double-frame lifting device, a working box, a printing frame for spreading sand and printing and a sand-supplying system which is arranged on the printing frame and used for printing and supplying sand; the double-frame lifting device is arranged in the printing frame and used for lifting a working box, and the working box is arranged at the top of the double-frame lifting device;

the double-frame lifting device comprises a motor, a screw rod, a transmission mechanism, a lifting base, a workbench, a bottom plate, an intermediate plate, a first guide rod and a second guide rod, wherein the motor is arranged on the lifting base, the screw rod is arranged on the lifting base, and the motor is in transmission connection with the screw rod through the transmission mechanism; the first guide rods and the second guide rods are respectively provided with four, the second guide rods are positioned on the inner sides of the first guide rods, the bottoms of the first guide rods are connected to the lifting base, the first guide rods penetrate through four corners of the bottom plate, the tops of the first guide rods are connected to four corners of the middle plate, the bottoms of the second guide rods are connected to the bottom plate, the second guide rods penetrate through the middle plate, and the tops of the second guide rods are connected to the workbench; the top of the screw rod is connected with the middle plate through a bearing, the screw rod is connected with the bottom plate through a sliding block, and the working box is arranged on the working table.

2. The sand mold 3D printer of the double-frame lifting device according to claim 1, characterized in that: the printing frame comprises a printing base, a cross beam, a ground rail, a sand paving beam and a printing beam; the sand paving device comprises a printing base, a sand paving beam, a printing beam, a ground rail, a plurality of printing nozzles and a plurality of sand paving beams, wherein the two beams are parallelly erected on the printing base; the printing base comprises a fixed base, an adjusting seat and a side support; the fixed base locate the both sides of ground rail respectively, adjust the seat and install in fixed base's below, the both ends at fixed base are installed to the side support, the crossbeam install on the side support.

3. The sand mold 3D printer of the double-frame lifting device according to claim 1, characterized in that: the sand supply system comprises a lifting machine, sand boxes and a sand supply device in turn, wherein the input end of the sand supply device in turn is connected with the sand boxes, and the input end of the sand boxes is connected with the lifting machine.

4. The sand mold 3D printer of the double-frame lifting device according to claim 1, characterized in that: the transmission mechanism comprises a driving wheel, a driven wheel and a synchronous belt, the driving wheel is in transmission connection with a motor, the driving wheel is in transmission connection with the driven wheel through the synchronous belt, and the driven wheel is connected with a lead screw.

5. The sand mold 3D printer of the double-frame lifting device according to claim 3, characterized in that: the sand device that supplies in turn include that two deposit sand jar, agitating unit, breaker and weighing device, breaker locate the bottom of depositing the sand jar, inside agitating unit located depositing the sand jar, the top of depositing the sand jar was equipped with into sand mouth, advance the sand mouth and be connected with the output of sand box through the solenoid valve, deposit the sand jar and fix on the installation roof beam through the installing frame, the both ends of installation roof beam fix on the crossbeam and with spread sand roof beam parallel arrangement, weighing device install and deposit on the sand jar.

6. The sand mold 3D printer of the double-frame lifting device according to claim 3, characterized in that: the lifting machine comprises a lifting frame, a driving motor, a lifting bucket frame, a transmission device, a lifting rail and a turning rail, wherein the lifting rail and the turning rail are respectively arranged on the inner side surfaces of two upright posts of the lifting frame, and the driving motor is in transmission connection with the lifting bucket frame through the transmission device; promote bucket frame and promote track and upset track sliding connection, the promotion track be the linear type, the orbital lower part of upset is parallel with promoting the track, the top is to one side bending.

7. The sand mold 3D printer of the double-frame lifting device according to claim 5, characterized in that: agitating unit include agitator motor, pivot, little stirring rake, big stirring rake and reinforcing plate, agitator motor locate the bottom of depositing the sand jar, agitator motor is connected with the pivot transmission, inside the pivot stretches into to deposit the sand jar, little stirring rake and big stirring rake from bottom to top install in proper order in the pivot, the reinforcing plate is connected on big stirring rake, little stirring rake and big stirring rake cross arrangement.

8. The sand mold 3D printer of the double-frame lifting device according to claim 5, characterized in that: the crushing device comprises two sand outlets and a plurality of crushing outlets, the crushing outlets are arranged at the upper ends of the sand outlets, and the sand outlets, the crushing outlets and the three inside the sand storage tank are communicated.

9. The sand mold 3D printer of the double-frame lifting device according to claim 6, characterized in that: the lifting frame comprises two stand columns, a bottom side supporting seat, a fixed top plate and a plurality of reinforcing rods, wherein the two stand columns are vertically arranged on two sides of the bottom side supporting seat, the reinforcing rods are connected between the two stand columns at intervals in parallel, the bottom side supporting seat and the stand columns form a certain inclination angle after being connected, the fixed top plate is fixed at the tops of the two stand columns and is parallel to the reinforcing rods, and mounting corner blocks are arranged on the reinforcing rods.

10. The sand mold 3D printer of the double-frame lifting device according to claim 6, characterized in that: the transmission device comprises two driving wheels, a wheel shaft, two driven fixed wheels and a transmission chain, the driving wheels are in transmission connection with the driving motor through the wheel shaft, the driven fixed wheels are hung below the fixed top plate of the lifting frame, and the driven fixed wheels are in transmission connection with the driving wheels through the transmission chain; the back of the lifting hopper frame is provided with an upper transmission shaft and a lower transmission shaft, the upper transmission shaft is connected to the upper part of the lifting hopper frame, the lower transmission shaft is connected to the lower part of the lifting hopper frame, pulleys are respectively arranged on two sides of the upper transmission shaft and two sides of the lower transmission shaft, the pulleys connected to two sides of the upper transmission shaft are positioned in the overturning track, and the pulleys connected to two sides of the lower transmission shaft are positioned in the lifting track; the lower transmission shaft is provided with a lifting wheel, and the lifting wheel is in transmission connection with the transmission chain.