WO2017177603A1

WO2017177603A1 - Sand-mold 3d printing device with multiple working boxes

Info

Publication number: WO2017177603A1
Application number: PCT/CN2016/096495
Authority: WO
Inventors: 彭凡; 刘轶; 周志军; 徐云龙; 杜文军; 马强; 赵龙; 马睿
Original assignee: 宁夏共享模具有限公司
Priority date: 2016-04-15
Filing date: 2016-08-24
Publication date: 2017-10-19
Also published as: CN105710294B; TR201722029T1; CN105710294A; MX2018000750A; UA122408C2; BR112018000773B1; BR112018000773A2; CU24527B1; RU2690324C1; ZA201800054B; CU20180012A7

Abstract

A sand-mold 3D printing device with multiple working boxes, comprising: a main frame (100), a working box transport system (200), working boxes (300), a working box lifting mechanism (400), a sanding machine (500), a printing head (600), a cleaning means (700), a liquid material system (800), a sand mixing means (900), and an electric system. The printing device comprises two or more working boxes together with a sand mixing tank, a synchronously operated sanding machine, a through-type printing head, a synchronous working box lifting mechanism, an electric system and so on matching with the working boxes. During sanding and printing operations, the two or more working boxes work synchronously. Compared with a sand-mold 3D printing device with a single working box of the same specification, the printing efficiency of the sand-mold 3D printing device with multiple working boxes is improved by times in equal time, so that the costs of the sand mold are reduced and the production needs are satisfied more quickly.

Description

Multi-work box sand type 3D printing device

Technical field

[0001] The present invention belongs to the field of 3D printing, and is mainly applied to the field of 3D printing of sand molds for casting, and specifically relates to a multi-work box sand type 3D printing apparatus having multiple work boxes and capable of printing at the same time.

Background technique

[0002] At present, sand type 3D printing equipment generally has a problem that the printing efficiency is too low, the daytime cost is high, and the production demand cannot be satisfied. The main reason is that the sand-type printing equipment has similar structural components, which are composed of a single work box, a sander, a print head and other functional modules, and the working order of each functional module is also basically fixed between the required turns, and it is necessary to improve the single work box form. The printing efficiency of sand-type printing equipment can only be started from the aspects of increasing the size and increasing the running speed. However, due to the limited space available for device size and operating speed, the effect of using the above method to improve printing efficiency is not satisfactory, and it still cannot meet the production needs. However, the rapid development of sand-type 3D printing applications needs to be able to double the printing efficiency. Possible solution. Although in the prior art, the patent document with the publication number CN203887169U discloses a 3D printing production line and designs at least two work boxes to improve printing efficiency, but the technology is an early research result of the applicant, the essence of the structure. Printing work for two or more work boxes. When one work box completes the print job, another empty work box can quickly fill in the empty space to continue printing, so there can only be one work box for printing work in the same room. The same method does not realize the simultaneous sanding and printing of a plurality of work boxes. Moreover, this prior art has a shortage of devices such as a print head, a sander, and a driving device, and the demand for the same printing cannot be achieved. Therefore, how to design a multi-workbox sand type 3D printing device with multiple work boxes and simultaneous printing is an urgent problem to be solved in the art.

technical problem

Problem solution

Technical solution

[0003] The present invention provides a sand type 3D printing device, which comprises two or more work boxes, combined with a matching sand mixing tank, a synchronous running sander, a through-printing head, a working box synchronous lifting mechanism and Electrical systems, etc., sanding and printing operations 吋 two or more work boxes work together, with the same size single work box sand type 3D Compared with printing equipment, it can double the printing efficiency in the same day, thus effectively reducing the cost of sand and responding to production needs faster.

[0004] In order to solve the above technical problem, the technical solution adopted by the present invention is:

[0005] A multi-work box sand type 3D printing apparatus, comprising: a main body frame (100), a work box conveying system (200), a work box (300), a work box jacking mechanism (400), a sander (500) ), print head (60 0), cleaning device (700), liquid material system (800), sand mixing device (900) and electrical system, characterized by:

[0006] The main body frame (100) includes at least three uprights. After the main body frame is assembled, two or more independent working areas are formed, and a working box jacking mechanism (400) is respectively installed at the bottom of each working area;

[0007] Each of the work box jacking mechanisms (400) is provided with a set of work box conveying system (200) for driving the movement of the working box (300) along the Y-axis direction;

[0008] The work box (300) includes a bottom plate, which is a movable plate, and the work box can be driven to move up and down along the z-axis by the work box jacking mechanism (400);

[0009] a sander running module (510) is disposed above each of the at least three columns of the main frame (100), and at least three of the sander operating modules (510) pass at least Two couplings (530) are connected, the coupling is connected to the sander running drive motor (520), and at least two of the sanders (500) are fixed to the at least three sander operating modules ( 510) Above the corresponding slider, the driving motor (520) is driven by the sander to drive the corresponding number of sanders (500) to run synchronously along the Y-axis; each sanding of the at least two sanders (500) A corresponding number of the work boxes (300) are respectively disposed under the device;

[0010] The top side of the main body frame (100) is mounted with a print head running X-direction linear motor (620), and the print head is operated by a X-direction linear motor (620) to mount a print head running Y-direction module (633). Print Head

(600) is connected to the print head running Y-direction module (633), and the print head (600) is driven by the X-direction linear motor (6 20) and the print head running Y-direction servo motor (631). It can realize the operation of X axis and Y axis in two directions;

[0011] a sand mixing device (900) is installed on the outer side of the main frame (100), and the sander (500) is

) Sand supply.

[0012] Further, the work box conveying system (200) includes at least three roller mounting beams (210), rollers The road mounting beam (210) is supported by a leg (250), the mounting seat (221) is fixed to one side of the roller table mounting beam (210), the mounting seat is coupled to the support shaft (226), the drum (225) and the sprocket ( 222) Fixed connection, fixedly mounted on the support shaft (226) by the bearing (223), and finally locked by the circlip (224) (223); sand groove (270) mounted on the roller mounting beam (210) Between, it is used to receive the work box (30 0) missing sand; the motor (261) and the motor mount (262) are assembled and fixed on the roller mounting beam (210) and the other side through the coupling ( 260) Connected to another roller mounting beam (210), the work box positioning mechanism (290) is mounted on the overall frame (100) to adjust the working position of the work box (300) in the sand 3D printing device.

[0013] Further, the work box (300) comprises a lining, a casing, a sealing frame, a support frame and a felt, wherein the inner lining is composed of a wear-resistant material, the outer casing is made of a rigid material, a sealing frame is installed around the top, and the sand is laid. The machine is flush, ensuring that sand leakage does not occur around the work box during the sanding process; the support frame is installed around the bottom and the bottom, for the support of the surrounding structure and the limit of the base (323) moving to the bottom of the waiting; The base of the work box (323) is covered with felt on the upper part of the work box, and is pressed by bolts with a felt press plate. The felt is closely attached to the surrounding lining to ensure that no sand leakage occurs at the bottom during the movement of the work box.

[0014] Further, the work box jacking mechanism (400) includes: a frame (410), a servo motor (420), a lifting portion (430), a transmission mechanism (440), a servo motor (420), and a lift The part (430) and the transmission mechanism (440) are mounted on the frame (410), and the frame (410) is composed of a left side bracket (411), a bottom bracket (412), a right bracket (413), and a motor base (414). The servo motor (420) drives the driving wheel (442) through the motor connecting shaft (441), and the driving wheel (442) drives the driven wheel (445) through the belt (444) to move. The belt (442) is rotating. The tensioning wheel (443) is used for tensioning; the driven wheel (445) is connected to the lead screw (432) by a key, and the rotating screw (442) is rotated by the same, and the upper and lower ends of the screw (442) are driven by a floating bearing (435). ) Fixed with the fixed bearing (431), the screw nut (433) is mounted on the screw (442). As the screw rotates, the screw nut (433) moves up and down along the thread, and the lifting plate (438) Connect with the screw nut (433) via the connection block ( 434), lift plate 438) A slider (416) is mounted thereon, the slider (416) slides on the vertical rail (415), and the top of the lifting plate (438) is provided with a supporting block and an adjusting top wire for use throughout the movement. Support the work box (300) and maintain the work box (300) level by controlling the position of the adjustment top wire (437). [0015] Further, the sander (500) includes a sand groove (501) for storing sand, and a cover plate (503) and a cover plate (503) are connected above the sand groove (50 1). The end is provided with a sand inlet (508), the other end is provided with a screw drive motor (504), a screw rod (502) is suspended below the cover plate (503), and the screw rod (502) passes through the timing pulley (506). And a timing belt connected to the screw drive motor (504), a sand trap (560) is installed in the middle of the sand groove (501), and a lower sand port (541) is disposed under the sieve tank (560), and a scraping plate adjacent to the rear of the lower sand opening (541) and at an angle to the horizontal plane; the eccentric shaft (551) is hoisted on the lower side of the sand groove (501), and several eccentric blocks (553) pass the bearing (552) Mounted on the eccentric shaft (551), the lower end of the eccentric block (553) is connected to the connecting block (554), and the rear side of the connecting block (554) is mounted with a scraping plate (570), a vibration motor ( 550) is connected to the eccentric shaft (551) at the end, and is fixed under the sand groove (501), and the connecting block (55 4) is fixed together with The scraping plate (570) above it is connected to the rotating pin bearing (544) via a swinging link (542) and a connecting pin (543), and the rotating pin bearing (544) is mounted in the sand groove ( Below 501).

[0016] Further, the sander (500) includes a sand groove (501) for storing sand, and a cover plate (503) and a cover plate (503) are connected above the sand groove (50 1). There is a sand inlet (508), and the other end is equipped with a screw drive motor (504), a screw rod (502) is suspended below the cover plate (503), and the screw rod (502) passes through the timing pulley (506). And the timing belt is connected to the spiral driving motor (504), and the sand groove (501) and its corresponding mounting member are integrally mounted on the rotating shaft bearing through the rotating shafts (512) on both sides.

(511), the rotating shaft support (511) is fixed, and a swinging rod (513) is mounted on the upper side, and a cylinder bearing (514) is disposed on both sides of the sand groove (521), and the cylinder bearing seat ( 514) A telescopic cylinder (515) is connected through a pin shaft, and the cylinder rod of the telescopic cylinder (515) is connected to the swing rod (513) through a pin, and the sand groove (501) can be driven by the telescopic movement of the telescopic cylinder (515). And its associated mounting member rotates integrally around the shaft support (511), and a funnel (521) is installed in the middle of the sand groove (501), the funnel

(521) There is a lower sand opening (541) below, and a scraping plate (570) adjacent to both sides of the lower sand opening (541) and at an angle to the horizontal plane, and the eccentric shaft (551) is hoisted in the sand groove (501) On the lower side, a plurality of eccentric blocks (553) are mounted on the eccentric shaft (551) via bearings (552), the eccentric block

(553) The other end is connected to the funnel (521), the connecting block (554) is hoisted under the sand trough (501), and the lower part of the connecting block (554) is equipped with an elastic tracheal notch (524) and a scraping plate ( 523), vibration The motor (550) is connected to the end of the eccentric shaft (551) and fixed under the sand groove (501). The heating tube (517) is suspended below the sand groove (501) on the opposite side of the eccentric shaft (551).

[0017] Further, the magnetic rail (625) is fixed on the X-axis main support frame (622), the magnetic guide rail is mounted on the guide rail, the X-direction linear motor (620) and the guide rail slider (614) on the guide rail and the XY axis main The connector (628) is connected by a linear motor to drive the Y-axis module (633) to move, which in turn drives the movement of the entire printhead assembly (640) on the X-axis. The X-axis main support cover (623) is used around the guide rail. X-axis main guide cover (624) and X-axis main guide guard (626) for mechanical sealing; X-axis main support frame on both sides with X-axis auxiliary support (611), X-axis auxiliary guide support (612) ) For the fixed rail (616), the guide rail slider (614) on the guide rail and the X-axis auxiliary joint (615) are bolted to assist the X-direction movement of the print head assembly (640), and the X around the guide rail is used. Axis auxiliary rail protection ( 613), rail slide (614), X-axis auxiliary support cover (618) for sealing; support frame with X-axis auxiliary fixing plate (619) and X-axis main fixing plate (621) and 3D Printer body The connection is made to ensure the stroke range of the X-axis of the printer component (640) in the overall 3D printer. The Y-axis motor (631) and the Y-axis module (633) are connected by the Y-axis fixing plate (632), and the motor output drives Y. The movement of the shaft moving link (634) in the Y direction enables the Y-direction movement of the printhead assembly (640).

[0018] Further, the cleaning device (700) is fixedly mounted by a support plate (714) supported by two support bars (713); the sponge (741) in the sponge mechanism (740) is horizontally placed on the sponge On the support plate ( ⁷ 42), the sponge support plate ( ⁷ 42) is supported by a compression spring ( ⁷ 43 ); the print head cleaning tank ( ⁷ 30 ) is mounted under the cleaning plate (712), and the print head cleaning tank (730) There is a sealing groove (735) between the cleaning plate (712), a chrome-plated shaft (732) placed near the print head cleaning tank (730), and a cleaning strip (733) and a cleaning strip mounting plate on the chrome-plated shaft (732). (734) , two of the cleaning strips (73 3) are clamped to the cleaning strip mounting plate (734) by bolts, and finally the cleaning strip mounting plate (734) is mounted on the chrome-plated shaft (732) with fastening screws; liquid material sensor ( 731) It is used to check whether the cleaning liquid is in place, and ensure that part of the cleaning strip (733) is immersed in the cleaning liquid; the paper clamping mechanism (720) is also supported by the cleaning plate horizontal adjustment compression spring (721) on the support strip (713). The paper plate can be adjusted by the horizontal adjustment spring (721) of the cleaning plate 723) height, to ensure that the paper supporting plate (723) and the cleaning plate (712) plane of the same requirements.

[0019] Further, the liquid material system (800) includes: a mounting bracket, a liquid material supply system, a waste liquid recovery system, a cleaning supply system, a liquid material supply system, and other auxiliary devices, wherein the liquid material 1 supply The system comprises: a adding point, a level 1 filter, a motor, a storage box, a motor, a 2-stage filter, a solenoid valve, a metering valve, an actuator; the waste liquid recovery system includes: each waste collection point, a solenoid valve, Motor, collection box, filter, motor, check valve, recovery point; the cleaning supply system includes: cleaning agent addition point, filter, filter, storage box, motor, solenoid valve, meter valve, cleaning point The liquid material supply system includes: a adding point, a filter, a valve, a storage box, and an actuator; the other auxiliary devices include: a position detecting switch, a pressure detecting switch, a pressure detecting switch, and a pressure detecting switch. , wiring cabinet.

[0020] Further, the sand mixing device (900) includes: a sand suction pump (910), a sand storage tank (920), a main body (930), a sand mixing tank (940), and a sand tank (950); The sand suction pump (910) is installed above the sand storage tank (920), and a sand mixing tank (940) is placed under the sand storage tank (920). The sand mixing tank (940) is suspended from the main body (930) by a beam, and is stored. The sand tank (920), the sand tank (940), and the sand tank (950) are integrally mounted on the main body (930), and the sand absorbing pump (910) and the sand storage tank (920) are arranged in the sand mixing device (900). There are two sets of sand troughs (950), and the control between the two sets is independent of each other.

[0021] Further, a cleaning device (700) and a liquid material system (800) are disposed under the print head, and the cleaning device (700) and the liquid material system (800) are stacked on top of each other; The heating device maintains the printing area at a constant temperature. .

Advantageous effects of the invention

Beneficial effect

[0022] The beneficial effects of the present invention are:

[0023] The present invention provides a sand type 3D printing apparatus, which comprises two or more work boxes, sanding and printing operations, two or more work boxes, and a single work box sand type 3D printing device of the same specification. In comparison, in the same day, it is possible to double the printing efficiency, thereby effectively reducing the cost of sand and responding to production needs more quickly.

Brief description of the drawing

DRAWINGS

1 is a front view showing a three-dimensional structure of a multi-work box 3D sand type printing apparatus of the present invention.

2: Rear view of the three-dimensional structure of the multi-work box 3D sand type printing apparatus of the present invention.

3 is a view showing the internal structure of a multi-work box 3D sand type printing apparatus of the present invention. 4 is a schematic structural view of a multi-work box 3D sand type printing apparatus of the present invention.

[0028] FIG. 5 is a structural view of a work box conveying system of the present invention.

6 is a view showing the internal structure of a roller of a work box conveying system of the present invention.

7 is a schematic view showing the overall structure of a work box of the present invention.

8 is a schematic view showing the sealing structure of the working box of the present invention.

[0032] FIG. 9 is a schematic diagram of the jacking mechanism of the work box of the present invention.

[0033] FIG. 10 is a first schematic view showing the structure of the jacking mechanism of the work box of the present invention.

[0034] FIG. 11 is a second schematic view showing the structure of the jacking mechanism of the work box of the present invention.

12 is a schematic view showing the overall structure of an embodiment of the sander of the present invention.

13 is a partial structural schematic view of an embodiment of the sander of the present invention.

[0037] FIG. 14 is a schematic view showing the overall structure of the second embodiment of the sander of the present invention.

[0038] FIG. 15 is a partial schematic view showing the second embodiment of the sander of the present invention.

[0039] FIG. 16: Schematic diagram of the motion structure of the print head of the present invention.

17 is a schematic view showing the overall composition of the cleaning device of the present invention.

18 is a schematic view showing the internal structure of the cleaning device of the present invention.

Figure 19: Schematic diagram of the liquid material system of the present invention.

20: Schematic diagram of the external structure of the sand mixing tank of the present invention.

[0044] FIG. 21 is a schematic view showing the internal structure of the sand mixing tank of the present invention.

[0045] FIG. 22 is a schematic view showing the working principle of the sand mixing tank of the present invention.

23 is a first schematic view of a sand control structure of the sand mixing tank of the present invention.

24 is a second schematic view of the sand control structure of the sand mixing tank of the present invention.

[0048] wherein, 100_ body frame, 200_ work box conveying system, 300-

, 010- - two-stage cascade tower, 020_ operation panel, 030_ folding door

50_Safety guardrail, 060_Control panel, 070_Waste sand recovery tank, 080_Servo panel, 090_Air source cabinet, 101_Back view window, 102_Side view window, 103_Back maintenance cover, 227 _Roller lift, 500_ sander, 600_ printhead, 700_cleaning device 800_liquid system, 420_ work box jacking motor, 510_ sander running module, 520_ sander running drive motor 530_Coupling, 620_ print head running X-direction linear motor, 633_ print head running Y-direction module, 631_ print head transport Row Y-direction servo motor, 210_Roller mounting beam 220_Roller structure, 227_Roller lift, 230_ Steel grid support plate, 240_Steel grid, 250_Leg 260_Coupling, 261_Motor , 262_Motor mount, 270_ sand trap, 280_work box clamping mechanism 290_work box positioning mechanism, 221_ mount, 222 sprocket, 223 bearing, 224 snap spring, 225 roller, 226-support shaft, 311 _ left and right top sealing frame, 312_ left and right outer casing, 313_ left and right inner lining, 314_ left and right bottom support frame, 321_ left and right felt pressure plate, 322_ left and right felt, 323_work box base, 324_ bottom Bracket, 325_ front and rear felt platen, 326_ front and back felt, 331_ front and rear top seal, 332_ front and rear outer casing, 333_ front and rear inner lining, 334_ front and rear bottom support, 400_work top Mechanism, 410-frame, 411-left bracket, 412-bottom bracket, 413-right bracket, 4 14 motor seat, 420-servo electromechanical, 430-lifting section, 431_ fixed bearing, 432 screw, 4 trace of rod nut _33, the connecting block 434-, 435- bearing, 436- Braces, 437—Adjusting top wire, 438—lifting plate, 415 rail, 416—slider 440—transmission mechanism, 441 motor connecting shaft, 44 2—drive wheel, 443—pressing wheel, 444 belt, 445—from Moving wheel, 501 sand trap, 502-spiral, 503_ cover, 504_ spiral drive motor, 505_slot support, 506_synchronous pulley, 507_ maintenance cover, 508_ sanding port, 509_sand Sensor, 541_ lower sanding port, 542_ swinging link, 5 43_rotating pin, 544_rotating pin bearing, 545_gap adjustment plate, 550_vibrating motor, 551 _ eccentric shaft, 552_bearing, 553 _ eccentric block, 554_ connection block, 560_ screen sanding tank, 570_ scraping plate, 511_ shaft bearing, 512_ shaft, 513_ pendulum, 514_cylinder bearing, 515_ telescopic cylinder, 516_limit Block, 517_heating tube, 521_funnel, 522_joining block, 523_scraping plate, 524 _elastic tracheal notch, 525-elastic air pipe, 541_ lower sanding port, 551_eccentric shaft, 552_bearing, 5 53-eccentric block, 611-X axis auxiliary support frame, 612-X axis auxiliary guide frame support, 613-X axis auxiliary guide rail protection, 614_rail slide, 615_Χ axle Auxiliary connector, 616_rail, 617_Χ axis auxiliary rail cover, 618_Χ axle auxiliary support cover, 619_Χ axle auxiliary fixing plate, 621_Χ axle main fixing plate, 622_Χ axle main support frame, 623_Χ axle main support frame cover, 624_ΧAxis main guide cover, 625_magnetic guide, 626_Χ main guide protection, 627_Χ linear motor, 628_ΧΥ main mount, 631_¥axis motor, 632_motor mount, 633_¥axis module, 634_¥axis Mobile connection plate, 640_ printhead assembly, 720-paper clamping mechanism, 730_ printhead cleaning tank, 740_sponge mechanism, 750-rotary cylinder, 722-loading shaft, 711 position sensor, 712-cleaning plate, 713_ Branch Strut, 714_ support plate, 715_ waste collection tank, 741-sponge, 742_sponge support plate, 743_ compression spring, 731 liquid sensor, 732-chrome shaft, 733-cleaning strip, 734-cleaning strip mounting plate , 7 35—sealing groove, 723—paper support, 721—cleaning plate horizontal adjustment compression spring, 736—cleaning tank, 821—add point, 822_1 grade filter, 823_motor, 824_storage box, 825_motor, 826_2 Stage filter, 827—solenoid valve, 828_meter valve, 829_actuator, 831_ waste collection point, 832 one solenoid valve, 833_motor, 834—collection box, 835—filter, 836—receive Motor, 837—check valve, 838—recovery point, 841—cleaner addition point, 842—filter, 843—filter, 844—storage box, 845 motor, 846—solenoid valve, 847—flow valve, 848 — cleaning point, 851—add point, 852_filter, 853_valve, 854_storage box, 855_actuator, 910_sucking pump, 920 _ sand storage tank, 921_ sand inlet, 922_mass sensor , 930_ body, 931_ control cabinet, 932_ liquid system support, 923_ control valve 1, 940_mixer, 941_mixer inlet, 942_mixer, 943 motor, 924—vibration motor 1, 948—sensor, 950 sand trap, 951 sand guide, 952 control valve 2, 953— Vibration motor 2, 944 cylinder, 945 - connecting bracket, 946 - sealing block, 947_ upper part of the mixing tank, 949 - mixing blade.

Embodiments of the invention

[0049] In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to specific embodiments.

[0050] The overall structure of the present invention is shown in FIGS. 1-4, a multi-work box sand type 3D printing apparatus, including: a main body frame

(100), work box conveyor system (200), work box (300), work box jacking mechanism (400), sander (500), print head (600), cleaning device (700), liquid system ( 800), sand mixing device (900) and electrical system, wherein the main body frame (100) comprises at least three uprights, and the main body frame (100) composed of three or more upright columns is assembled to form two or more independent working areas, each A set of work box jacking mechanisms (400) are installed at the bottom of each work area. A set of work box conveying systems (200) are arranged above the two sets of independent work box jacking mechanisms (400) to realize movement of the work box (300) in the Y direction; the bottom plate of the work box (300) The movable plate can be driven to move up and down in the Z direction by the work box jacking mechanism (400). More than three sander operation modules (510) are respectively arranged above the three or more columns of the main body frame (100), and the three or more sander operation modes are respectively The group (510) is connected by more than two couplings (530), and the coupling is connected to the sander running drive motor (520). A corresponding number of sanders (500) are respectively disposed directly above the two or more work boxes (300), and the sanders (500) are fixed to the three or more sander operating modules (510). Above the slider, the drive motor (520) is driven by the sander to drive the corresponding number of sanders (500) to run synchronously in the Y direction. The main frame (100) has a print head running X-direction linear motor (620) on the inner side of the main frame (100), and the print head runs X to the linear motor (620) to mount the print head to run the Y-direction module (633), and the print head ( 600) Connected to the print head running Y-direction module (633), the print head (600) can be realized by the X-direction linear motor (620) running on the print head and the Y-direction servo motor (631) running on the print head. X, Y running in both directions. A sand mixing device (900) is installed on the outer side of the main frame (100) to supply sand to the sander (500). The print head (600) Y is disposed with a cleaning device (700) and a liquid material system (800) below one end. The cleaning device (700) and the liquid material system (800) are placed one on top of the other. The frame is internally provided with a heating device for maintaining the temperature of the printing area; the heating device may be a lamp tube of various wavelength ranges, an air conditioner, a microwave, or the like.

[0051] In another embodiment of the present invention, there is another combination of the plurality of sanders (500) and the printhead (600) working order, that is, each sander (500) is installed independently. The sander runs the drive motor (520), each sander (500) can be sanded separately, and the printhead (600) prints each of the finished sanded work areas in sequence.

[0052] The overall working principle of the system is as follows. The sand and liquid materials for 3D printing are mixed by the sand mixing device (900) and then quantitatively added to the corresponding number of sanders (500). The sander runs the drive motor (520). The rotary 吋 drives the three 510_ sander drive modules synchronously through two or more couplings (530) to drive the corresponding number of sanders (500) to synchronize in the Y direction. Run, respectively, after the sanding action above the two or more independent work boxes (300), the sander (500) returns to the original position, and the print head (600) runs the X-direction linear motor in the print head ( 620) After the print head is operated by the Y-direction servo motor (631), after a full-covering print job is performed on the sand surface above the two or more work boxes (300) that have been sanded, the print head (600) Reset. The movable floor of the work box jacking mechanism (400) drives the work box (300) to descend (down distance 0.1mm~lmm, preferably 0.2mm~0.5mm), repeating the above sanding and printing process until the entire printing work is completed. In the above sanding printing process, the cleaning device (700) realizes the anti-clogging protection between the fixed cleaning and the non-working time of the printing head (600), and the liquid material system (800) Providing liquid material for the sand mixing device (900) and the printhead (600) as needed.

[0053] After the work box (300) is printed, it is output through the work box conveying system (200), and the external roller table elevator (227) performs quick exchange between the empty box and the full box, which can improve the speed of the box change and reduce the waiting time. In the daytime.

[0054] In another embodiment of the present invention, the work box transport system (200) has the structure shown in Figures 5-6, supported by three roller mounting beams (210), and the roller mounting beams (210) are supported by legs (210). 250) Support, sanding groove (270) installed in the roller mounting beam (210) for receiving the missing sand of the working box (300), and the steel grating (2 40) is mounted on the steel plate supporting plate (230), above All connections are bolted; the mount (221) is welded to the roller mounting beam (210), the mount is connected to the support shaft (226), and the drum (225) and the sprocket (222) are bolted and supported by bearings ( 223) Fixedly mounted on the support shaft (226), and finally the bearing (223) is locked by the circlip (224); the motor (261) and the motor mount (262) are assembled on the roller mounting beam (the roller mounting beam ( 210), the other side is connected to another roller mounting beam (210) through a coupling (260), and the work box positioning mechanism (290) is mounted on the overall frame (100) for adjusting the working box (300) in the sand type Working position in a 3D printing device.

[0055] The working box conveying system (200) works as follows. The working box (300) needs to enter and exit the sand type 3D printing device 吋, and the motor (261) drives the coupling (260) to rotate, so that the working box (300) is rolled on both sides. The track structure (220) runs at the same time, ensuring that the work box (300) does not tilt forward and backward during operation; the motor (261) is transmitted to the coupling (260). The force is transmitted to the sprocket (222) through the chain and finally through the roller (225). ) Rotate the work box (300) to move; Work box (300) After running to the specified position of the sand type 3D printing device, the work box clamping mechanism (280) clamps the work box (300) in the Y direction to make the work box (300) The side is in close contact with the work box positioning mechanism (290), and the work box (300) is finally positioned to the front, rear, left, and right. In the work of sand type 3D printing equipment, part of the sand in the work box (300) will be missed from the side of the work box (300), the missing sand will be received by the sanding tank (270), and finally cleaned by the vacuum cleaner; after the sand type 3D printing equipment is printed The work box is also driven by the roller table structure (220), and the work box (300) is transported to the clearing position by the roller conveyor (227) lifting the outer roller table, and finally the work is completed. In this process, the left and right roller table structures (220) can work in the same way, or can be divided to work in, to meet the entry and exit of multiple work boxes in the sand 3D printing equipment in different compartments.

[0056] In another embodiment of the present invention, the structure of the work box (300) is as shown in FIGS. 7-8, and the inner liner (including the left and right inner liner (313) and the front and rear inner liner (333)) is composed of a wear resistant material. , with internal sand and felt holding Continued friction, the outer casing (including the left and right outer casing (312) and the front and rear outer casing (332)) is made of high-rigidity material, which constitutes the overall frame of the work box, ensuring the overall strength and rigidity of the work box, preventing deformation, both of which pass The bolts are assembled; the sealing brackets are installed around the top (including the left and right top sealing brackets (311) and the front and rear top sealing brackets (331)), which are flush with the sander to ensure that the working chamber does not occur around the sanding process. Sand leakage; support brackets on the bottom and bottom of the bottom (including the left and right bottom support brackets (3 14), the front and rear bottom support brackets (334) and the bottom brackets (324)), for the support and base of the surrounding structure (323) Move to the bottom of the waiting limit; work box base (323) around the upper part of the felt (including left and right felt (322) and front and back felt (326)), and felt plate (including left and right felt plate (321) And the front and back felt platen (325) are pressed by bolts, and the felt is closely attached to the surrounding lining to ensure that no sand leakage occurs at the bottom during the movement of the work box. .

[0057] The work box (300) works as follows, the work box jacking mechanism (400) pushes the work box base (323) to the top end, the sander (500) starts working, and the top seal frame is guaranteed to be sanded. During the process, the sand only acts on the inside of the work box, no sand leakage occurs, the sander (500) runs through a layer of sanding, and after the print head completes the relevant printing work, the work box base (323) is in the jacking machine ( Under the action of 400), the fixed height is lowered, and the above-mentioned sanding and printing process is repeated until the work box base (323) is lowered to the bottom, and the entire sanding and printing work is completed.

[0058] In another embodiment of the present invention, the structure of the work box jacking mechanism (400) is as shown in FIG. 9-11, and includes a frame (410), a servo motor (420), a lifting portion (430), and a transmission mechanism ( 440). The servo motor (420), the lifting portion (430), and the transmission mechanism (440) are mounted on the frame (410), the frame

(410) Consists of the left side bracket (411), the bottom bracket (412), the right bracket (413), and the motor base (4 14). The servo motor (420) drives the driving wheel (442) through the motor connecting shaft (441), and the driving wheel (442) drives the driven wheel (445) through the belt (444) to move. The belt (442) is rotating. Tension by the pinch roller (443). The driven wheel (445) is connected to the lead screw (4 32) by the key, and the same lead screw (442) is rotated. The upper and lower ends of the screw (442) are fixed by a floating bearing (435) and a fixed bearing (431).

[0059] The work box jacking mechanism (400) works as follows, the sand type 3D printing apparatus works, the work box (300) reaches the designated position, and the lift portion (430) of the lifter (400) is within its working range. The highest point, as the printing progresses, the servo motor (420) in the lift (400) is connected to the shaft via the motor (441) Drive the driving wheel (442) to operate, the driving wheel (442) drives the driven wheel (445) through the belt (444), and the belt (442) is tensioned by the pressing wheel (443) during the rotation. The driven wheel ( ⁴⁴ 5) is connected to the lead screw ( ⁴ 3 by the same function, and the same screw ( ⁴⁴² ) is rotated. The upper and lower ends of the screw ( ⁴⁴² ) are fixed by a floating bearing (435) and a fixed bearing (431). During the rotation of the screw (442), the screw nut (433) mounted thereon moves downward along the thread, and the lifting plate (438) and the screw nut (433) are connected by the connecting block (434). During the downward movement of the screw nut (433), the lifting plate (438) is moved downward by the connecting block (434), and the slider (416) is mounted on the lifting plate (438), and the slider (416) is The guide rail (415) slides up, wherein the guide rails can be arranged on the bracket or can be vertically arranged separately, so that the lifting plate (438) moves up and down without deviation, and the work box (300) is supported by four support blocks during the whole movement. (436) Support, keep the working box (300) level by controlling the position of the adjusting top wire (4 37). When the entire printing process is completed, the lift (400) moves upwards again, returning to the original starting position again. jobs.

[0060] Another embodiment of the present invention, the sander (500) The structure of the first embodiment is shown in Figures 12-13, and the sander (500) is a unidirectional sanding structure, as shown in the figure. As shown, in order to meet the requirements of large span (2m or more) sanding, the sand groove (501) is designed by splicing two rectangular pipes, and there is room for storing sand in the middle of the square pipe. A cover plate (503) is connected through the hinge above the sand groove (501), and the cover plate (503) can be rotated around the hinge; the cover plate (503) has a sand receiving port (508) at the end, and the other end A screw drive motor (504) is mounted, a screw (502) is suspended directly below the cover plate (503), and the auger (50 2) passes through the timing pulley (506) and the timing belt and the screw drive motor ( 504) Connection. A sand trap (560) is installed in the middle of the sand groove (50 1), and a sand outlet (541) is below the sieve tank (560), adjacent to the rear of the lower sand gate (541), and has a horizontal plane The angled plate is a sanding plate (570), and the angle is 0 to 5 degrees.

[0061] The eccentric shaft (551) is hoisted on the lower side of the sand groove (501), and has several fixed supports in the middle, and a plurality of eccentric blocks (553) are mounted on the eccentric shaft (551) through bearings (552), The lower end of the eccentric block (553) is connected to the connecting block (554) by a pin, and the rear side of the connecting block (554) is mounted with a scraping plate (570), a vibration motor (550) and an eccentric shaft (551). The ends are connected and fixed under the sand groove (501). The connecting block (554) is coupled to the rotating pin bearing (544) via a swing link (542) and a connecting pin (543) together with a wiper plate (570) fixed thereto, the rotating pin shaft The support (544) is mounted below the sand trap (501).

[0062] The sander (500) The working principle of the first embodiment is as follows: the sand is added to the sand tank (501) through the sand inlet (508), and the sanding sensor (509) shows that the sand is stopped after the sand sensor is detected. . The sand-spinning screw (502) is driven by the screw conveyor motor (504) to rotate at a constant speed, distributing the sand evenly throughout the sand tank (501). After the sanding action begins, the sand inside the sand trap (501) is filtered through the sieve tank (560), and evenly sprinkled from the lower sand outlet (541). The sand scraping plate (570) is synchronously operated to scrape the spilled sand. level. During the sanding process, under the driving of the vibration motor (550), the eccentric shaft (551) is rotated at a high speed under the support of the bearing (552), and the connecting block (554) is driven to reciprocate up and down, and the connecting block (554) is connected. Drive the scraping plate (570) to do high-frequency vibration, and the flattened sand is well compacted to achieve the effect of increasing sand density and strength. Different sand density and strength can be obtained by adjusting the frequency and speed of the vibration motor (550).

[0063] Another embodiment of the present invention, the sander (500) The structure of the second embodiment is shown in Figures 14-15, and the sander (500) is a two-way sanding structure, as shown in the figure. In order to meet the requirements of sanding large span (2m or more), the sand groove (501) is designed to be spliced with two rectangular pipes, and there is room for storing sand in the middle of the square pipe. A cover plate (503) is connected through the hinge above the sand groove (501), and the cover plate (503) can be rotated around the hinge; the cover plate (503) has a sand receiving port (508) at the end, and the other end A screw drive motor (504) is mounted, a screw (502) is suspended directly below the cover plate (503), and the auger (50 2) passes through the timing pulley (506) and the timing belt and the screw drive motor ( 504) Connection. The sand groove (50 1) and its associated mounting piece are integrally mounted in the rotating shaft support (511) through the rotating shafts (512) on both sides, the rotating shaft support (511) is fixed, and the swinging rod (513) is mounted on the upper side. a cylinder support (514) is disposed on both sides of the sand groove (521), and the cylinder support (514) is connected with a telescopic cylinder (515) through a pin shaft, and the cylinder rod of the telescopic cylinder (515) is further The pendulum rod (513) is connected by a pin, and the telescopic action of the telescopic cylinder (515) can drive the sand groove (501) and its associated mounting member to rotate integrally around the shaft support (511). A funnel (521) is installed in the middle of the sand groove (501), a lower sand hole (541) is below the funnel (521), and a flat plate adjacent to both sides of the lower sand opening (541) and at an angle to the horizontal plane is The scraping plate (570), the angle is -5 ° ~ 5 °, can be adjusted by the telescopic cylinder (515) and the limit block (51 6). In addition to the above-mentioned angle adjustment by the telescopic cylinder, it can also be adjusted by means of a rotating motor, a rotating cylinder, a rack and pinion, a worm gear, or the like, or manually. [0064] The eccentric shaft (551) is hoisted on the lower side of the sand groove (501), and has several fixed supports in the middle, and a plurality of eccentric blocks (553) are mounted on the eccentric shaft (551) through bearings (552), The other end of the eccentric block (553) is connected to the funnel (521), the connecting block (554) is hoisted under the sand trough (501), and the lower part of the connecting block (554) is provided with an elastic tracheal notch (524) and The sanding plate (523), the vibration motor ( ₅₅₀ ) is connected to the end of the eccentric shaft (551) and fixed under the sand groove (501). The heating tube (517) is hoisted below the sand trap (501) on the opposite side of the eccentric shaft (551).

[0065] The sander (500) The working principle of the second embodiment is as follows. The sand is added to the sand tank (501) through the sand inlet (508), and the sanding sensor (509) shows that the sand is stopped after the sand sensor is detected. . The sand-spinning screw (502) is driven by the screw conveyor motor (504) to rotate at a constant speed, distributing the sand evenly throughout the sand tank (501). After the sanding action begins, the sand inside the sand trap (501) passes through the funnel

(521) After the diversion, sprinkle evenly from the lower sand outlet (541), and the scraping plate (523) is synchronized to smooth the spilled sand. During the sanding process, under the driving of the vibration motor (550), the eccentric shaft (551) rotates under the support of the bearing (552), and drives the eccentric block (553) to reciprocate. The eccentric block (5 53) The funnel (521) is driven to perform high-frequency vibration so that the sand can smoothly flow out from the lower sand outlet (541) below the funnel (521). The gap size of the lower sand outlet (541) can be adjusted by the elastic gas pipe (525), and the gap between the elastic gas pipes (525) can be adjusted by controlling the air pressure (preferably the gap is 0-6 mm), thereby adjusting the amount of sand to be adjusted. The role. The advantage of the second embodiment is that the two-way sanding can be realized, the inclination angle of the sanding and squeegee (523) and the horizontal plane (-5°~5°) is controlled by the expansion and contraction of the telescopic cylinder (515) and the limit block (516). The position is accurately obtained, thereby eliminating the idle travel of the sander (500) and improving the efficiency of the sand-type 3D printing device. The heating tube (517) placed under the sand trap (501) can heat the printed material according to the printing needs, and different sand strength and curing time can be obtained by adjusting the heating temperature. The heating tube (517) is arranged and operated in the same manner as in any 3D sand type printing apparatus where heating of the printing material and the sand type is required.

[0066] In another embodiment of the present invention, the structure of the print head assembly (640) is as shown in FIG. 16. The movement of the print head assembly (6 40) is mainly coordinated by the movement of the X-axis and the movement of the Y-axis to complete 3D printing. jobs. The magnetic rail (625) is fixed to the X-axis main support (622), the magnetic rail is equipped with two rails (616), the X-direction linear motor (627) and the rail slider (614) and the XY-axis main connector (628) Bolted, driven by a linear motor, drives the Y-axis module (633) to move, which in turn drives the entire printhead assembly (640) at X The movement of the shaft. The X-axis main support cover (623), X-axis main guide cover (624) and X-axis main guide protection (626) are mechanically sealed to prevent dust and other impurities from entering the guide rail and motor and affecting the working effect. Since the 3D printer model is too large, the single X-direction support cannot satisfy the rigidity of the printer. Therefore, the X-axis auxiliary support frame (611) is arranged on both sides, and the X-axis auxiliary rail support frame (612) is mounted on the fixed guide rail (616). The guide rail slider (614) and the X-axis auxiliary connection seat (615) are bolted to assist the X-direction movement of the print head assembly (640), and the X-axis auxiliary guide rail is used for protection.

(613), the guide rail slider (614) and the X-axis auxiliary support cover (618) are sealed to ensure the working environment of the guide rail is clean. The X-axis main support (622) and the X-axis auxiliary support (611) together form the X-axis travel of the printhead assembly (640) to ensure the X-axis rigidity of the printhead. The support frame is connected to the main body structure of the 3D printer by using the X-axis auxiliary fixing plate (619) and the X-axis main fixing plate (621) to ensure the printer components.

The X-axis of (640) is the range of travel in the overall 3D printer. The Y-axis motor (631) and the Y-axis module (633) are connected by a Y-axis fixing plate (632), and the motor output drives the Y-axis moving connecting plate (634) in the Y-direction to realize the Y of the print head assembly (640). To the movement.

[0067] The print head (600) works as follows. The print head assembly (640) is driven by a linear motor in the X-axis main support unit (620) to realize the movement of the X-axis. For the problem that the X-axis stroke is too long, the magnetic scale is utilized. The precise positioning of the print head assembly (640) in the X direction is achieved, and the X-axis auxiliary support unit (610) is used to complete the auxiliary support of the overall frame to ensure the rigidity of the print head assembly and the printer body. The print head assembly (640) realizes the movement of the Y-axis through the Y-axis unit, and realizes the precise determination of the Y-direction by using the grating rule structure in its own system. The X-axis and the Y-axis cooperate to realize the corresponding movement of the print head assembly (640) according to a predetermined schedule.

[0068] In another embodiment of the present invention, the cleaning device (700) has the structure shown in FIGS. 17-18, and is mounted on the support plate (71 4) at a designated position of the 3D sand type printing device, and the cleaning plate (712) is supported by two supports. The strips (713) are supported back and forth, and the cleaning plate (712) is connected by bolts between the supports of the two support strips (713), and the level of the cleaning plate (712) is adjusted by adjusting the horizontal adjustment spring (721) of the cleaning plate. Degree and height, ensuring the flatness and distance between the printhead plane and the wash basin plate (712) in the 3D sandprinting device; the sponge (741) in the sponge mechanism (740) is placed horizontally on the sponge support plate (742), and The sponge support plate (742) is supported by a compression spring (74 3), and the height of the sponge (741) can be adjusted by the expansion and contraction of the compression spring (743); the print head cleaning tank (730) is installed directly under the cleaning plate (712), and Print head cleaning pool There is a rectangular seal groove (735) between the (730) and the cleaning plate (712). The chrome-plated shaft (732) is placed before and after the print head cleaning tank (730), and a cleaning strip (733) is mounted on the chrome-plated shaft (732). Cleaning strip mounting plate (734), two cleaning strips (733) are clamped to the cleaning strip mounting plate (734) by bolts, and finally the cleaning strip mounting plate (734) is mounted on the chrome-plated shaft (732) with fastening screws; The material sensor (731) is used to detect whether the cleaning liquid is in place, to ensure that part of the cleaning strip (733) is immersed in the cleaning liquid; the paper clamping mechanism (720) is also supported by the cleaning plate horizontal adjustment compression spring (721) on the support strip (713) ), the horizontal adjustment spring (721) of the cleaning plate can adjust the height of the paper support (723) to ensure that the paper support (723) and the cleaning plate (712) have the same flatness requirement.

[0069] The cleaning device (700) works as follows. The print head in the 3D sand printing device needs to be cleaned, running to the X side directly above the print head cleaning tank (730), and rotating the cylinder (750) to rotate the chrome plate.

(730) Rotate, the cleaning strip (733) on the chrome plate (730) is at an angle to the print head to clean the print head. The waste liquid on the print head is collected by the waste collection tank (715) and finally drained. 3D sand type printing equipment needs to adjust the print head precision 吋, the print head runs to the top of the paper-clamping mechanism (720), and the straightness of the "one"-shaped powder is printed on the paper by the print head to correct the accuracy of the print head; The 3D sand printing equipment requires maintenance shutdown, the print head can be run above the sponge mechanism (740), and the liquid material in the sponge (741) keeps the long lower surface of the print head moist for a long time to prevent the print head from becoming clogged.

[0070] In another embodiment of the present invention, the liquid material system (800) structure is as shown in FIG. 19, including a mounting bracket 810.

(not shown), liquid material supply system 820, waste liquid recovery system 830, cleaning supply system 840, liquid material supply system 850, and other auxiliary devices 860. The liquid material supply system 820 includes: an addition point 821, a stage 1 filter 822, a motor 823, a storage tank 824, a motor 825, a 2-stage filter 826, a solenoid valve 827, a metering valve 828, and an actuator 829. The waste liquid recovery system 830 includes: each waste liquid collection point 831, a solenoid valve 832, a motor 833, a collection tank 834, a filter 835, a receiving motor 836, a check valve 837, and a recovery point 838. The cleaning supply system 840 includes: a cleaning agent addition point 841, a filter 842, a filter 843, a storage tank 844, a motor 845, a solenoid valve 846, a metering valve 847, and a cleaning point 848. The liquid 2 supply system includes: an addition point 851, a filter 852, a valve 853, a storage tank 854, and an actuator 855. The other auxiliary devices include: a position detecting switch 861 (not shown), a pressure detecting switch 862 (not shown), a pressure detecting switch 863 (not shown), and a pressure detecting switch 864 (not shown). , wiring cabinet 865 (not shown). [0071] The working principle of the liquid material system (800) is as follows, the adding point and the collecting point are all concentrated in one place, and the quantity is not limited; the storage box is a plurality of compartments of a box, the quantity is not limited, all liquid storage The boxes are all disposed in one case; the motor and the filter are all mounted on the storage box through the mounting plate. All the components are connected by pipes and joints to ensure smooth flow in the same circuit.

[0072] the feeding system is a separate circuit, and is uniformly added to the storage box by the external joining point; the waste liquid recovery system is the only waste liquid recovery system, and all the waste liquids, whether single or multiple, are uniformly concentrated to In the waste liquid storage tank, it is uniformly excluded. More preferably, the bottom of each of the single storage boxes is provided with a pressure detecting switch, and then the amount of liquid in the storage box is detected. More preferably, the upper part of the storage box is connected to the waste liquid tank through a pipeline, and the liquid is all entered into the waste liquid tank after the liquid material is added excessively. The upper part of the better waste tank is equipped with a position detection 幵 861, and the liquid level in the waste tank is detected.

[0073] According to another embodiment of the present invention, the sand mixing device (900) has the structure shown in Figures 20-24, and is composed of a sand suction pump (91 0), a sand storage tank (920), a main body (930), and a sand mixing tank. (940), sand trough (950) and other components. The sand suction pump (910) is installed above the sand storage tank (920) and ensures absolute sealing. A sand mixing tank (940) is placed under the sand storage tank (920), and the sand mixing tank (940) is suspended from the main body by a beam ( 930) Internal. The sand storage tank (920), the sand mixing tank (940), and the sand tank (950) are integrally mounted on the main body (930), and the control cabinet (931) and the liquid tank bracket (932) are respectively installed on both sides of the main body (930). ), the load cell, motor, and control valve are controlled by the control cabinet (931).

[0074] The sand absorbing device (900) has two sets of sand absorbing pumps (910), sand storage tanks (920), and sand grooves (950), and the control between the two sets is independent of each other. This not only increases the capacity of the sand storage, but also applies to the work of a single sander and multiple sanders, which improves the efficiency of the equipment. The sand storage tank (920), the sand mixing tank (940), and the sand tank (950) are all mounted on the main body (930), and the main body (930) itself includes a control cabinet (931), a liquid tank bracket (932), and The relevant sensors, motors and control valves are controlled via the control cabinet (931).

[0075] The working principle of the sand mixing tank (900) is as follows: the sand type 3D printing equipment starts working, the sand suction pump (910) is ventilated, and the sand is moved along the sand storage tank (920) by the sand suction pump (910). The sand inlet (921) enters the sand storage tank (920), and the mass sensor (922) installed around the bottom of the sand storage tank (920) measures and feeds back the weight change, when the weight of the sand in the sand storage tank (920) When the set value is reached, the mass sensor (922) signals and the sand suction pump (910) stops working. When the sand in the sand storage tank (920) is set After the setting, the control valve 1 (923) is automatically smashed, the vibration motor (924) starts to work, and the sand enters the sand mixing tank (940) along the mixing tank inlet (941), and the liquid material is in a specific ratio. (3<3⁄4~20<3⁄4) Enter the mixing tank (940) through the pipeline, and the motor (943) in the lower part of the mixing tank (942) drives the stirring blades.

(949) Rotate at a high speed. After the sand and liquid material are evenly stirred, the 吋 cylinder (944) drives the connecting bracket (945) to start moving upwards, the sealing block (946) is snoring, and the mixed sand and liquid material are mixed. In the sand trap (950), the control valve 2 (952) is snoring, the vibration motor 2 (953) is started, and the sand enters the sander (500) along the sand guide (951), the sensor (948) The sand in the sander (500) is tested. When the specified height is reached, the control valve 2 is closed and the vibration motor 2 (953) is stopped. Repeat the above actions to achieve continuous automatic sand absorption, sand mixing, and sanding functions.

[0076] The sand mixing tank (940) is characterized in that the structure is divided into a sand mixing tank upper part (947) and a sand mixing tank lower part (942), which are connected by means of upper and lower docking, and sand mixing. The lower part of the tank (942) is made of stainless steel and other wear-resistant and corrosion-resistant materials. The interior is coated with wear-resistant materials to increase its wear resistance and prolong its service life. Need to replace the lower part of the mixing tank

(942) Yes, replacement is simple and cost effective. The sand outlet is sealed by an arc-shaped sealing block (946), and a sealing strip is provided on the same sealing block to prevent fine sand from flowing out of the gap. The mixing blade (949) is combined with a circular arc and a flat plate to increase the mixing area, improve the mixing efficiency, and make the mixing more uniform.

Industrial applicability

[0077] The above is a detailed description of a multi-work box sand type 3D printing device provided by the present invention. The principles and embodiments of the present application are described in the embodiments. The description of the above embodiments is only for helping understanding. The method of the present application and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and the scope of application. It should be understood that the limitations of the application.

Claims

Claim

[Claim 1] A multi-work box sand type 3D printing apparatus, comprising: a main body frame 100, a work box conveying system (200), a work box (300), a work box jacking mechanism (400), and a sander (500) , print head (600), cleaning device (700), liquid material system (800), sand mixing device (900) and electrical system, characterized by:

The main body frame (100) comprises at least three uprights. After the main body frame is assembled, two or more independent working areas are formed, and a working box jacking mechanism (400) is respectively installed at the bottom of each working area;

A set of work box conveying systems is disposed above each of the work box jacking mechanisms (400)

(200), used to drive the movement of the work box (300) along the Y-axis;

The work box (300) includes a bottom plate, which is a movable plate, and the working box can be driven to move up and down along the Z-axis by the work box jacking mechanism (400);

a sander running module (510) is disposed above each of the at least three columns of the main frame (100), and at least three of the sander operating modules (510) pass through at least two joints The shaft (530) is connected, the coupling is connected with the sander running drive motor (5 20), and at least two of the sanders (500) are fixed to the at least three sander operating modules (510) Above the corresponding slider, the driving motor (520) is driven by the sander to drive the corresponding number of sanders (500) to run synchronously along the Y-axis; below each sander of the at least two sanders (500) A corresponding number of the work boxes are respectively arranged (300. The main frame (100) has a print head running X-direction linear motor (620) on the top inner side, and the print head is operated to install a print head under the X-direction linear motor (620). The Y-direction module (633), the print head (600) is connected to the print head running Y-direction module (633), and the X-direction linear motor (620) is operated on the print head and the Y-direction servo motor is operated on the print head (63 1 Drive, print head (600) The X-axis and Y-axis can be operated in two directions; a sand mixing device (900) is installed on the outer side of the main frame (100) to supply sand to the sander (500).

[Claim 2] The apparatus according to claim 1, wherein the work box conveying system (200 ) comprising at least three roller mounting beams (210) supported by legs (25 0), the mounting seat (221) being fixed to one side of the roller mounting beam (210), the mounting seat and The support shaft (226) is connected, the roller (225) and the sprocket (222) are fixedly connected, and are fixedly mounted on the support shaft (226) by the bearing (223), and finally the bearing (223) is locked by the circlip (224); The sanding groove (270) is installed between the roller mounting beams (210) for receiving the missing sand of the working box (300); the motor (261) and the motor mounting seat (262) are assembled and mounted on the roller table. On the beam (210), the other side is connected to the other roller mounting beam (210) via a coupling (260), and the work box positioning mechanism (290) is mounted on the overall frame (100) for adjusting the work box (300) Working position in a sand type 3D printing device.

[Claim 3] The apparatus according to claim 1, wherein the work box (300) comprises a liner, a casing, a sealing frame, a support frame and a felt, wherein the inner liner is composed of a wear resistant material and the outer casing is rigid The material is constructed, and the sealing frame is installed around the top, which is flush with the sander to ensure that there is no sand leakage around the work box during the sanding process; the support frame is installed around the bottom and the bottom, and the support and base for the surrounding structure (323) ) The limit to the bottom of the movement; the felt is mounted on the upper part of the work box base (323), and is pressed by the felt platen by bolts. The felt is closely attached to the surrounding lining to ensure that the bottom of the work box does not move during the movement. Sand leakage will occur.

[Claim 4] The apparatus according to claim 1, wherein the work box jacking mechanism (400

) including: frame (410), servo motor (420), lifting portion (430), transmission mechanism (440); servo motor (420), lifting portion (430), transmission mechanism (440) mounted on frame (410) Above, the frame (410) is composed of a left side bracket (411), a bottom bracket (412), a right bracket (413), and a motor base (414), and the servo motor (420) drives the driving wheel through the motor connecting shaft (441). (442) Operation, the driving wheel (442) then drives the driven wheel (445) through the belt (444) to move, and the belt (442) is tensioned by the pressing wheel (443) during the rotation; the driven wheel (445) ) The screw is connected to the lead screw (432), and the screw (442) is driven to rotate. The upper and lower ends of the screw (442) are fixed by a floating bearing (435) and a fixed bearing (431). The screw (442) A screw nut (433) is mounted thereon, and as the screw rotates, the screw nut (433) moves up and down along the thread, and the lifting plate (438) and the screw nut (433) are connected by a connecting block (434). The lifting plate (438) is mounted with a slider (416), the slider (416) is slid on the vertical rail (415), and the top of the lifting plate (438) is provided with a supporting block and an adjusting top wire for The work box (300) is supported throughout the movement and the work box (300) level is maintained by controlling the position of the top wire (437).

[Claim 5] The apparatus according to claim 1, wherein the sander (500) includes a sand groove (501) for storing sand, and a cover is connected above the sand groove (501) Board

503), the cover plate (503) has a sand receiving port (508) at one end, a screw drive motor (504) at the other end, and a screw rod (502) is suspended below the cover plate (503), the auger rod (502) driving the motor through the timing pulley (506) and the timing belt (

504) Connection, a sand trap (560) is installed in the middle of the sand groove (501), a lower sand hole (541) is arranged below the sand screen (560), and is adjacent to the rear of the lower sand (541) a squeegee having an angle with a horizontal plane; an eccentric shaft (551) is hoisted on a lower side of the sand groove (501), and a plurality of eccentric blocks (553) are mounted on the eccentric shaft (551) via bearings (552), The lower end of the eccentric block (553) is further connected with the connecting block (554), the back of the connecting block (554) is mounted with a scraping plate (570), and the vibration motor (550) is connected to the end of the eccentric shaft (551). And fixed under the sand groove (501), the connecting block (55 4) together with the scraping plate (570) fixed above it through the swing link (542) and the connecting pin shaft (543) and the rotating pin shaft The seats (544) are connected, and the rotating pin bearings (54 4) are mounted below the sand grooves (501).

[Claim 6] The apparatus according to claim 1, wherein the sander (500) comprises a sand groove (501) for storing sand, and a cover is connected above the sand groove (501) (503), the cover plate (503) has a sand inlet (508) at the end, and a screw drive motor at the other end

(504), a screw rod (502) is suspended below the cover plate (503), and the screw rod (502) is connected to the screw drive motor (504) through a timing pulley (506) and a timing belt, sand The slot (501) and its associated mounting member are integrally mounted in the shaft support (511) through the rotating shafts (512) on both sides, and the rotating shaft support (511) is fixed and mounted above. There is a swinging rod (513), and two sides of the sand groove (521) are provided with a cylinder bearing (514), and the cylinder bearing (514) is connected with a telescopic cylinder (515) through a pin shaft, and the telescopic cylinder

The cylinder rod of (515) is connected to the swing rod (513) by a pin. The telescopic movement of the telescopic cylinder (515) can drive the sand groove (501) and its associated mounting parts to rotate around the shaft support (511). A funnel (521) is installed in the middle of (501), the funnel

(521) There is a lower sand outlet (541) below, and a scraping plate (570) adjacent to both sides of the lower sand opening (541) and at an angle to the horizontal plane, and the eccentric shaft (551) is hoisted in the sand groove (501) On the lower side, a plurality of eccentric blocks (553) are mounted on the eccentric shaft (551) through bearings (552), and the other end of the eccentric block (553) is connected to the funnel (521), and the connecting block ( 554) hoisted under the sand groove (501), the lower part of the connecting block (554) is equipped with an elastic air pipe notch (524) and a scraping plate (523), and the vibration motor (550) is connected to the eccentric shaft (551). , and fixed under the sand groove (501), the heating pipe (517) is hoisted under the sand groove (501), on the opposite side of the eccentric shaft (551).

[Claim 7] The apparatus according to claim 1, wherein the magnetic rail (625) is fixed to the X-axis main support frame (622), the magnetic guide rail is mounted with the guide rail, and the X-direction linear motor (620) and the guide rail are provided. The upper rail slider (614) is connected to the XY main shaft connector (628), and is driven by a linear motor to drive the Y-axis module (633) to move, thereby driving the movement of the entire print head assembly (6 40) on the X-axis. The X-axis main support frame cover (623), X-axis main guide cover (624) and X-axis main guide protection (626) are mechanically sealed around the guide rail; X-axis auxiliary support frame is arranged on both sides of the X-axis main support frame ( 611), the X-axis auxiliary rail support frame (612) is mounted on the fixed guide rail (616), the guide rail slider (614) on the guide rail and the X-axis auxiliary connection seat (615) are bolted, and the auxiliary print head is driven. The X-direction movement of the component (640) is sealed around the guide rail by the X-axis auxiliary rail guard (613), the guide rail slider (614), and the X-axis auxiliary support cover (618); the support bracket uses the X-axis auxiliary fixing plate ( 619) and X-axis main fixing plate (621) and 3D The main body structure of the printer is connected to ensure the stroke range of the X axis of the printer component (640) in the overall 3D printer. The Y axis motor (631) and the Y axis module (633) are connected by the Y axis fixing plate (632), and the motor output is Drive the Y-axis moving link (634) in the Y-direction to achieve the printhead assembly (640 The Y-direction movement.

The apparatus according to claim 1, wherein the cleaning device (700) is supported by a support plate

(714) Fixed installation, the cleaning plate (712) is supported by the two support bars (713); the sponge (741) in the sponge mechanism (740) is placed horizontally on the sponge support plate (742), and the compression spring (743) Supporting the sponge support plate (742); the print head cleaning tank (730) is installed under the cleaning plate (712), and there is a sealing groove (735) between the print head cleaning tank (730) and the cleaning plate (712), and a chrome-plated shaft ( 732) Set near the print head cleaning tank (730), and install a cleaning strip (733) and a cleaning strip mounting plate (73 4) on the chrome-plated shaft (732). Two cleaning strips (733) are cleaned by bolt clamping. Install the plate (734), and finally install the cleaning strip mounting plate (734) on the chrome plate (732) with the fastening screws; the liquid material sensor (731) is used to check if the cleaning solution is in place, and ensure that some cleaning strips (733) are soaked. In the cleaning solution; the paper clamping mechanism (720) is also supported by the cleaning plate horizontal adjustment compression spring (721) on the support bar (713), and the cleaning plate horizontal adjustment pressure spring (721) can adjust the paper support plate (723) Height, secure paper plate 723) and the cleaning plate (712) plane of the same requirements.

The apparatus according to claim 1, wherein the liquid material system (800) comprises: a mounting bracket, a liquid material supply system, a waste liquid recovery system, a cleaning supply system, a liquid material supply system, and other auxiliary devices. The liquid material supply system includes: a adding point, a level 1 filter, a motor, a storage box, a motor, a 2-stage filter, a solenoid valve, a metering valve, and an actuator; and the waste liquid recovery system includes: Each waste collection point, solenoid valve, motor, collection box, filter, take-up motor, check valve, recovery point; the cleaning supply system includes: a cleaning agent addition point, a filter, a filter, a storage box, a motor, Solenoid valve, metering valve, cleaning point; the liquid material supply system includes: adding points, filters, valves, storage boxes, and actuators; the other auxiliary devices include: position detection, pressure detection, Pressure detection, pressure detection, wiring cabinet.

The apparatus according to claim 1, wherein the sand mixing device (900) comprises: a sand suction pump (910), a sand storage tank (920), a main body (930), a sand mixing tank (940), and sand. Slot (950); wherein, the sand suction pump (910) is installed above the sand storage tank (920), and is stored A sand mixing tank (940) is placed under the sand tank (920), and the sand mixing tank (940) is suspended inside the main body (930) by a beam, a sand storage tank (920), a sand mixing tank (940), and a sand tank (950). The installation is integrally mounted on the main body (930), and the sand absorbing pump (910), the sand storage tank (920), and the sand trough (950) are respectively provided in the sand mixing device (900), and the two sets are controlled. It is independent of each other and does not affect each other.