A sand feeding component capable of feeding various types of sand and a sand printing device

Abstract

The application relates to the field of molding sand printing, in particular to a sand feeding part capable of feeding various molding sands and a molding sand printing device, which comprises a base frame, a plurality of sand boxes arranged along the length direction of the base frame, the upper ends of the sand boxes are all provided with openings, and the bottoms of the sand boxes are all provided with sand pushing plates capable of moving upward; a roller shutter plate is slidably arranged on the upper side of the base frame, a slot is formed in the roller shutter plate, and the upper ends of the sand boxes can be aligned with the slot in sequence by sliding the roller shutter plate. The application has the effects of improving the sand feeding efficiency when a single sample is printed by using various molding sands, and improving the printing efficiency of the sample.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sand printing, in particular to a sand feeding part capable of feeding multiple types of sand and a sand printing device. BACKGROUND

[0002] Sand printing is a kind of 3D printing technology. A sand printing device stacks sand layer by layer, and then sprays resin (such as cold forming furan resin and phenolic resin) according to the shape of the part section through a nozzle, so as to bond the sand together, thereby printing a very complex and precise model. The automation and precision can be greatly improved, the process cycle is greatly shortened, and the manufacturing cost is reduced.

[0003] The sand printing device can print different types of products according to different types of sand, but the inventor found that when it is used to print rock samples, different types of sand are needed for printing because the actual rock generally has different characteristics according to different layers.

[0004] However, the current sand printing device can only be used for one type of sand. When different types of sand are needed for printing, the device needs to be stopped, the sand in the sand bed needs to be taken out, and then the new sand needs to be replaced and the device needs to be restarted for printing. This operation is extremely troublesome for a single sample that needs to be printed with multiple types of sand, and seriously restricts the printing efficiency of the sample. SUMMARY

[0005] In order to improve the sand feeding efficiency of a single sample printed with multiple types of sand and improve the printing efficiency of the sample, the present application provides a sand feeding part capable of feeding multiple types of sand and a sand printing device.

[0006] In a first aspect, the present application provides a sand feeding part capable of feeding multiple types of sand, which adopts the following technical solution:

[0007] A sand feeding part capable of feeding multiple types of sand, comprising:

[0008] a base frame;

[0009] a plurality of sandboxes arranged along the length direction of the base frame, and the upper end of each sandbox is open, and the bottom of each sandbox is provided with a sand pushing plate capable of moving upward;

[0010] a roller shutter plate slidably arranged on the upper side of the base frame, and a slot is formed in the roller shutter plate, and the upper end of each sandbox is aligned with the slot in sequence by sliding the roller shutter plate.

[0011] By adopting the technical scheme, various types of sand can be respectively stored in the multiple sandboxes, when one type of sand is needed, the shutter plate is moved to slide so that the slot of the shutter plate is aligned with the slot of the required sand box, then the sand pushing plate is moved upward to push the sand out of the sand box and protrude from the shutter plate, when the sand needs to be replaced, the shutter plate is moved so that the slot of the shutter plate corresponds to the opening of another sand box, then the sand pushing plate at the lower side of the sand box pushes the sand out, thus the sand of different types can be switched without stopping the machine or taking the sand out of the sand box for replacement, the sand of different types can be switched, and the sanding efficiency of a single sample can be improved, and the printing efficiency of the sand mold can be improved.

[0012] Optionally, the lower end of the sand box is fixed with a limiting protrusion for limiting the sand pushing plate from falling off the lower end of the sand box.

[0013] A traction member is arranged between the limiting protrusion and the sand pushing plate for limiting the sand pushing plate from falling off the upper end of the sand box.

[0014] By adopting the technical scheme, the limiting protrusion and the traction member are matched to prevent the sand pushing plate from falling off the upper and lower ends of the sand box, and the sand filling and discharging of the sand box are facilitated.

[0015] Optionally, the device further comprises:

[0016] A sliding frame is vertically movably arranged at the lower side of the base frame corresponding to the sand box, and the multiple sand boxes are arranged on the upper side of the sliding frame.

[0017] Multiple sand pushing cylinders are vertically fixed to the sliding frame and correspond to the sand boxes for vertically moving the sand pushing plate of each sand box.

[0018] By adopting the technical scheme, the multiple sand boxes are synchronously moved downward or upward by the vertical movement of the sliding frame, when the sand needs to be filled, the multiple sand boxes are synchronously moved downward by the sliding frame, so that the upper end of the sand box is exposed, and the sand can be conveniently poured into the sand box from the upper end, after the sand is poured, the multiple sand boxes are synchronously moved upward by the sliding frame, so that the upper end of the multiple sand boxes abuts against the lower side of the shutter plate, the shutter plate is moved to the slot corresponding to the upper end of the sand box, then the sand pushing plate is moved upward by the sand pushing cylinder, and the sand is pushed out of the slot, and the sanding work is completed.

[0019] Optionally, the lower end of each sand box is detachably fixed to the sliding frame.

[0020] By adopting the technical scheme, when the sliding frame is lowered to the upper end of the sand box to be separated from the shutter plate, the sand box can be taken off the sliding frame for sand filling or the remaining sand in the sand box can be poured out.

[0021] Optionally, one side of the sliding frame is rotatably provided with a rotating shaft in the same direction as the length of the sliding frame.

[0022] The lower end of the sand box is fixed to the rotating shaft on one side.

[0023] The sliding frame is further provided with a rotating driving member for driving the rotating shaft to rotate.

[0024] By adopting the above technical scheme, when the sliding frame is lowered to the upper end of the sand box to disengage the abutting curtain plate, the rotating driving member drives the rotating shaft to rotate, which can drive the sand box to rotate towards one side of the sliding frame, so that the sand box is inclined at a certain angle. In this way, sand filling can be easily realized. In addition, when the rotating shaft drives the sand box to rotate to the horizontal or downwardly inclined, the residual sand in the sand box can be quickly poured out, which is simple to operate.

[0025] Optionally, the base frame is rotatably connected with a horizontal reversing roller on the side away from the corresponding sand box.

[0026] The base frame is rotatably provided with a winding roller on the lower side corresponding to the reversing roller, and the two ends of the curtain plate pass around the reversing roller and are fixed to the winding roller.

[0027] The base frame is further provided with a winding driving member for rotating the winding roller.

[0028] By adopting the above technical scheme, the winding driving member can drive the winding or unwinding of the two winding rollers, so that the sliding of the curtain plate can be realized, so that the slot of the curtain plate can be aligned with the upper end opening of any sand box, or the upper end openings of all sand boxes can be simultaneously shielded by the curtain plate.

[0029] In a second aspect, the present application provides a sand printing device, which adopts the following technical scheme:

[0030] A sand printing device, comprising a sand feeding component, further comprising:

[0031] A sand bed vertically movably arranged on one end of the base frame corresponding to the curtain plate;

[0032] A sand laying roller movably arranged on the upper side of the curtain plate along the length direction of the curtain plate, for pushing the sand protruding on the upper side of the curtain plate to the sand bed;

[0033] A glue spraying head movably arranged on the upper side of the sand bed, for spraying glue on the sand bed.

[0034] By adopting the technical scheme, when printing the sand mold, firstly, the sand bed vertically moves to a position where the upper side of the sand bed is lower than the upper side of the base frame by a thickness of a layer of sand, then the upper side of the sand bed is sprayed with glue by the glue spraying head according to a preset pattern, then the sand in a sand box of the sand feeding part is pushed to protrude from the upper side of the rolling curtain plate, then the laying roller moves from the rolling curtain plate to the sand bed, so that the sand protruding from the upper side of the rolling curtain plate is pushed to the upper side of the sand bed, and the sand is laid on the sand bed along with the movement of the laying roller, then the laying roller retreats, at this time, part of the sand is fixed by the adhesive, and the printing of the bottom layer of the sand mold is completed, then the sand bed is lowered by a height of a layer of sand, the glue is sprayed by the glue spraying head again, and the above steps are repeated, so that the printing of the second layer of sand is completed, and the above steps are repeated, so that the printing of the sand mold is completed, and when the sand mold needs to be replaced during the printing process, the rolling curtain plate moves, and the sand in the other sand box is fed, so that the sand mold is not stopped, the sand does not need to be taken out and refilled, different sands can be switched and fed, and therefore the sand feeding efficiency of a single sample during the printing of multiple types of sand can be improved, and the printing efficiency of the sand mold is improved.

[0035] Optionally, the glue spraying head is provided with a plurality of glue spraying nozzles, and the side of the base frame is provided with a plurality of glue liquid grooves, and each glue liquid groove is connected with each glue spraying nozzle through a glue pipe.

[0036] By adopting the above technical scheme, the plurality of glue spraying nozzles and the plurality of glue liquid grooves are correspondingly arranged, so that different glue spraying nozzles can be directly replaced when different types of sand are used for printing, and the glue spraying nozzles do not need to be cleaned and replaced with new glue liquid, and therefore the printing efficiency of the sand mold is improved.

[0037] Optionally, the upper side of the sand bed is detachably connected with a detachable pad.

[0038] By adopting the above technical scheme, the glue liquid can be sprayed on the detachable pad, so that the pad can be taken off from the sand bed when the printed sand mold is taken out, and the sand mold is conveniently taken off.

[0039] In summary, the present application has at least one of the following beneficial technical effects:

[0040] 1. A plurality of types of sand can be respectively stored in a plurality of sand boxes, when a type of sand needs to be used, the rolling curtain plate is moved to align the slot of the rolling curtain plate with the slot of the sand box, and then the sand is pushed out of the sand box to protrude from the rolling curtain plate by moving the sand pushing plate upward, when the sand needs to be replaced, the rolling curtain plate is moved to align the slot of the rolling curtain plate with the opening of another sand box, and then the sand is pushed out of the sand box by the sand pushing plate at the lower side of the sand box, so that different types of sand can be switched and fed without stopping the machine and taking out the sand from the sand box, and therefore the sand feeding efficiency of a single sample during the printing of multiple types of sand can be improved, and the printing efficiency of the sand mold is improved.

[0041] 2. By vertical movement of the slide, multiple sand boxes can be driven to move synchronously downward or upward, so that when sand filling is needed, multiple sand boxes can be driven to move synchronously downward by the slide, so that the upper end of the sand box is exposed, at this time, the sand can be conveniently poured into the upper end of the sand box, after the sand pouring is completed, multiple sand boxes can be driven to move synchronously upward by the slide, so that the upper end of the multiple sand boxes abuts against the lower side of the rolling shutter plate, at the same time, the rolling shutter plate moves to the slot corresponding to the upper end of a sand box, then the sand pushing plate is driven to move upward by the sand pushing cylinder, so that the sand can be pushed out from the slot, and the sand pouring work is realized. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 is a front view of a sand pouring component capable of realizing sand pouring of multiple types of sand according to an embodiment of the present application;

[0043] Figure 2 is a cross-sectional view of a base frame of a sand pouring component capable of realizing sand pouring of multiple types of sand according to an embodiment of the present application;

[0044] Figure 3 is a cross-sectional view of a sand box structure of a sand pouring component capable of realizing sand pouring of multiple types of sand according to an embodiment of the present application;

[0045] Figure 4 is a schematic view of a slide structure of a sand pouring component capable of realizing sand pouring of multiple types of sand according to an embodiment of the present application;

[0046] Figure 5 is a schematic view of a rolling shutter plate structure of a sand pouring component capable of realizing sand pouring of multiple types of sand according to an embodiment of the present application;

[0047] Figure 6 is a schematic view of an extension frame structure of a sand pouring component capable of realizing sand pouring of multiple types of sand according to an embodiment of the present application;

[0048] Figure 7 is a structural schematic view of a sand printing device according to an embodiment of the present application;

[0049] Figure 8 is a cross-sectional structural schematic view of a sand printing device according to an embodiment of the present application.

[0050] Explanation of reference signs: 1, base frame; 11, sliding groove; 12, reversing roller; 13, winding roller; 14, winding driving member; 2, sliding frame; 21, push cylinder; 22, rotating shaft; 221, rotating driving member; 3, sand box; 31, sand pushing plate; 32, limiting protrusion; 321, traction member; 33, sand pushing cylinder; 4, rolling shutter plate; 41, slot; 42, telescopic frame; 5, sand mold bearing part; 51, sand frame; 52, sand bed; 53, detachable pad; 54, push cylinder; 6, sand laying part; 61, sand laying roller; 62, guide rail; 63, sliding seat; 64, guide rack; 65, guide gear; 7, glue spraying part; 71, horizontal rail; 72, vertical rail; 73, glue spraying head; 731, glue spraying nozzle; 74, glue tank; 75, glue pipe. DETAILED DESCRIPTION

[0051] The following will be described in detail with reference to the accompanying drawings. Figures 1-8 The application is further described in detail.

[0052] The application discloses a sand laying part capable of realizing sand feeding of various types of sand, which is mainly applied to a sand printing device.

[0053] Embodiment 1

[0054] Reference Figure 1 A sand laying part capable of realizing sand feeding of various types of sand, comprising a base frame 1, the upper surface of the base frame 1 being in a long rectangular structure. A sliding frame 2 is horizontally arranged in the base frame 1, the sliding frame 2 being vertically slidably connected to the base frame 1, and the length direction of the sliding frame 2 being the same as that of the base frame 1. A push cylinder 21 is vertically fixed to the lower side of the base frame 1 corresponding to the sliding frame 2, and the telescopic rod of the push cylinder 21 is arranged upward and fixed to the sliding frame 2. The push cylinder 21 drives the telescopic rod to extend or retract, thereby driving the sliding frame 2 to move vertically in the base frame 1.

[0055] Reference Figure 2 and Figure 3 A plurality of sand boxes 3 are arranged on the sliding frame 2 along the length direction thereof, the sand boxes 3 being vertically arranged and the upper ends of the sand boxes 3 being open, a sand pushing plate 31 being horizontally arranged at the inner lower end of each sand box 3, the side edge of the sand pushing plate 31 abutting against the inner circumferential wall of the sand box 3, and a plurality of limiting protrusions 32 being fixed to the lower end of the sand box 3, the limiting protrusions 32 being capable of abutting against the lower side of the sand pushing plate 31 when the sand pushing plate 31 moves downward to the lower end of the sand box 3, thereby limiting the sand pushing plate 31 from being separated from the lower side of the sand box 3.

[0056] Reference Figure 2 and Figure 3, a traction member 321 is arranged between the limiting stop protrusion 32 and the sand pushing plate 31, for limiting the sand pushing plate 31 from separating from the upper side of the sand box 3. Specifically, the traction member 321 can adopt a soft traction rope, so as to realize the fixation of the sand pushing plate 31 and the limiting stop protrusion 32, and ensure that the sand pushing plate 31 can move vertically while limiting the movement distance of the sand pushing plate 31. In addition, the traction member 321 can also be a tension spring, which pulls the sand pushing plate 31 to move towards the limiting stop protrusion 32, so as to realize the vertical movement of the sand pushing plate 31, and the tension spring can make the sand pushing plate 31 move downward quickly after pushing sand to reset.

[0057] With reference to Figure 2 and Figure 3 , the lower side of the sliding frame 2 corresponding to each sand box 3 is also fixed with a sand pushing cylinder 33, the sand pushing cylinder 33 is vertically arranged and the telescopic rod is upwardly arranged, and the telescopic rod of each sand pushing cylinder 33 can be extended to push the sand pushing plate 31 of each sand box 3 to move vertically, so as to push the sand in the sand box 3 out.

[0058] When it is needed to fill sand, the telescopic rod is retracted by the lifting cylinder 21, the sliding frame 2 is driven to move vertically downward, and the sand box 3 is driven to move downward synchronously, so as to fill the sand in the sand box 3. After the filling of the sand in the sand box 3 is completed, the sliding frame 2 is driven to move vertically upward by the lifting cylinder 21, and the plurality of sand boxes 3 are driven to move upward synchronously to the working position.

[0059] Further, in order to facilitate the filling of the sand in the sand box 3, the sand box 3 and the sliding frame 2 can be connected in a detachable manner, for example, the sand box 3 is fixed on the sliding frame 2 by using a buckle, or the sand box 3 is fixed on the sliding frame 2 by using a plug-in manner, that is, a plug slot is formed on the sliding frame 2 along the width direction of the sliding frame 2, the lower end of the sand box 3 is horizontally plugged into the plug slot, or the sand box 3 is fixed on the sliding frame 2 by using a bolt, that is, the sand box 3 can be taken off from the sliding frame 2 to fill sand, and after the filling of the sand in the sand box 3 is completed, the sand box 3 can be installed on the sliding frame 2.

[0060] In addition, the sand box 3 and the sliding frame 2 can also be connected in a rotatable manner instead of the detachable manner, which will be described in detail below.

[0061] With reference to Figure 4The upper surface of the slide 2 is provided with a rotating shaft 22 on one side, the axis of the rotating shaft 22 is in the same direction as the length of the slide 2, the base frame 1 is provided with a rotating driving member 221 such as a motor on one end corresponding to the rotating shaft 22, for driving the rotating shaft 22 to rotate back and forth. The lower end of the sand box 3 is fixed to the rotating shaft 22 on one side. In this way, when the slide 2 drives the sand box 3 to descend, the rotating shaft 22 is driven to rotate by the rotating driving member 221, which can drive the sand box 3 to rotate towards one side of the slide 2, so that the sand box 3 is inclined at a certain angle. In this way, it is convenient to realize sand filling. In addition, when the rotating shaft 22 drives the sand box 3 to rotate to horizontal or downwardly inclined, the residual sand in the sand box 3 can be quickly poured out, which is simple to operate.

[0062] Referring to Figure 2 and Figure 5 , the upper side of the base frame 1 is provided with a rolling curtain plate 4, and the rolling curtain plate 4 is made of a hard and curlable material, such as a rolled steel material. The upper end of the base frame 1 is provided with a sliding groove 11 on both sides along the length direction, and the two sides of the rolling curtain plate 4 are inserted into the sliding groove 11 and can slide in the sliding groove 11. A slot 41 is formed in the rolling curtain plate 4, and the slot 41 has the same size as the upper opening of the sand box 3.

[0063] Referring to Figure 2 and Figure 5 , the base frame 1 is provided with two reversing rollers 12 on the side away from the sand box 3, the axis of the reversing roller 12 is in the width direction of the base frame 1, and the two reversing rollers 12 on the same side of the sand box 3 are vertically arranged. The base frame 1 is further provided with a winding roller 13 corresponding to the lower side of the reversing roller 12, the axis of the winding roller 13 is in the same direction as the axis of the reversing roller 12, and the base frame 1 is fixed with a winding driving member 14 such as a motor on one end corresponding to the winding roller 13. The two ends of the rolling curtain plate 4 extend out of the sliding groove 11 of the base frame 1, then pass through the two reversing rollers 12 and are fixed to the winding roller 13, and rotate synchronously in the same direction with the two winding rollers 13. The synchronous sliding of the rolling curtain plate 4 can be realized, so that the slot 41 of the rolling curtain plate 4 is aligned with the slot 41 of each sand box 3 in turn.

[0064] Referring to Figure 2 and Figure 5, so that a plurality of types of sand can be respectively stored in a plurality of sand boxes 3, when a type of sand is needed, the shutter plate 4 is moved to align the slot 41 of the shutter plate 4 with the opening of the sand box 3 needed, and then the sand pushing plate 31 is moved upward to push the sand out of the sand box 3 to protrude from the shutter plate 4, when the sand needs to be replaced, the shutter plate 4 is moved to align the slot 41 of the shutter plate 4 with the opening of another sand box 3, and then the sand pushing plate 31 at the lower side of the sand box 3 pushes the sand out, so that the sand can be switched without stopping the machine or taking the sand out of the sand box 3, thereby improving the sanding efficiency of a single sample when printing a plurality of types of sand, and improving the printing efficiency of the sand mold.

[0065] Embodiment 2

[0066] The sand feeding component can realize feeding of a plurality of types of sand, and the difference compared with Embodiment 1 is that:

[0067] Referring to Figure 6 , the sand pushing cylinder 33 is arranged on the sliding frame 2, the sand pushing cylinder 33 is vertically arranged, the telescopic rod of the sand pushing cylinder 33 is also arranged upward, the sand pushing cylinder 33 is slidably connected to the sliding frame 2 along the length direction of the sliding frame 2, and the telescopic frame 42 is fixed between the slot 41 of the shutter plate 4 and the sand pushing cylinder 33, so that after the sliding of the shutter plate 4 to align the slot 41 with the opening of the sand box 3, the telescopic frame 42 can drive the sand pushing cylinder 33 to move synchronously to the lower side of the sand box 3 corresponding to the slot 41 of the shutter plate 4.

[0068] In this way, only one sand pushing cylinder 33 needs to move synchronously with the shutter plate 4, and the sand feeding operation of the sand box 3 needed can be realized.

[0069] The sand feeding component can realize feeding of a plurality of types of sand, and the difference compared with Embodiment 1 is that:

[0070] Referring to Figure 7 and Figure 8 , the sand feeding component can realize feeding of a plurality of types of sand, and the difference compared with Embodiment 1 is that:

[0071] Referring to Figure 7 and Figure 8 , the sand mold carrying component 5 is arranged at one end of the base frame 1 in the length direction, the base frame 1 is vertically provided with a containing groove corresponding to the position of the sand mold carrying component 5, the sand mold carrying component 5 comprises a sand frame 51 fixed to the lower side of the containing groove and vertically arranged, the size of the sand frame 51 is the same as that of the containing groove, the upper and lower ends of the sand frame 51 are both open, and the lower side of the sand frame 51 is horizontally provided with a sand bed 52, and the side wall of the sand bed 52 can abut against the inner side wall of the sand frame 51. The upper surface of the sand bed 52 is horizontally provided with a detachable pad 53, and the detachable pad 53 is bolted to the sand bed 52.

[0072] Referring to Figure 7 and Figure 8 , the base frame 1 is fixed with a pushing cylinder 54 corresponding to the lower side of the sand bed 52, the pushing cylinder 54 is vertically arranged, and the telescopic rod of the pushing cylinder 54 can abut against the sand bed 52. In operation, the pushing cylinder 54 drives the telescopic rod to extend, that is, the sand bed 52 can be pushed to move vertically along the sand frame 51 until the upper side of the sand bed 52 is lower than the upper side of the base frame 1 by the thickness of a layer of sand.

[0073] Referring to Figure 7 and Figure 8 , the sand laying part 6 comprises a sand laying roller 61, which is horizontally arranged on the upper side of the base frame 1, the axis direction of the sand laying roller 61 is the same as the width direction of the base frame 1, and the lower side of the sand laying roller 61 abuts against the upper surface of the base frame 1.

[0074] Referring to Figure 7 and Figure 8 , the upper surface of the base frame 1 is fixed with guide rails 62 on both sides, both ends of the sand laying roller 61 are fixed with sliding seats 63, both sliding seats 63 are slidingly connected to the guide rails 62, and a guide rack 64 is fixed along the guide rail 62 on one side of the base frame 1 corresponding to the guide rail 62. A guide gear 65 is also rotatably arranged on one sliding seat 63 corresponding to the guide rack 64, the guide gear 65 is engaged with the guide rack 64, and a reciprocating motor for driving the guide gear 65 to rotate is also fixed on the sliding seat 63.

[0075] In operation, the reciprocating motor drives the gear to rotate, and through the engagement of the guide gear 65 and the guide rack 64, the sliding seat 63 can be driven to reciprocate along the guide rail 62, thereby driving the sand laying roller 61 to reciprocate between the slot 41 of the rolling shutter plate 4 and the container groove. Further, after the uppermost sand of the sand box 3 is pushed out of the slot 41 to the upper side of the rolling shutter plate 4 by the sand laying part, the sand laying roller 61 moves from the rolling shutter plate 4 to the sand bed 52, thereby pushing the sand on the upper side of the rolling shutter plate 4 to the sand bed 52 and laying the sand flat.

[0076] Referring to Figure 7 and Figure 8 , the glue spraying part 7 comprises a horizontal rail 71 fixed horizontally on the upper side of the base frame 1, the length direction of the horizontal rail 71 is the same as the length direction of the base frame 1, a vertical rail 72 is slidingly arranged on the horizontal rail 71 along the length direction of the horizontal rail 71, and the length direction of the vertical rail 72 is perpendicular to the length direction of the horizontal rail 71. A glue spraying head 73 is slidingly arranged on the vertical rail 72 along the length direction of the vertical rail 72. The horizontal rail 71 is fixed with a first driving part for driving the vertical rail 72 to move, and the vertical rail 72 is fixed with a second driving part for driving the horizontal rail 71 to move, and the first driving part and the second driving part can be realized by horizontal pushing cylinders.

[0077] Referring to Figure 7 and Figure 8The three glue nozzles 731 are fixed on the glue spraying head 73, and a plurality of glue grooves 74 are also fixed on one side of the base frame 1. The glue pipes 75 are connected between each glue groove 74 and the glue nozzle 731. In this way, since different types of sand require different binders, a plurality of glue nozzles 731 are arranged, and the glue nozzles 731 are arranged corresponding to each glue groove 74, so that the binders can be supplied to each glue nozzle 731 respectively. Therefore, the glue nozzles 731 do not need to be frequently cleaned and replaced, and can be effectively applied to different sand printing.

[0078] In summary, when the sand mold needs to be printed, the sand bed 52 is first raised to the upper side of the base frame 1 by a thickness of one layer of sand, the glue nozzle 731 is moved by the glue spraying head 73, the binder is sprayed on the upper side of the sand bed 52 according to the preset pattern, the sand in the sand box 3 is pushed to the upper side of the rolling shutter plate 4 by the sand pushing member, and then the sand is pushed to move towards the sand bed 52 by the sand laying roller 61, so that the sand is laid on the upper side of the sand bed 52. At this time, the part of the sand bed 52 coated with the binder can be bonded and fixed. At this time, the bottom layer of the sand mold can be completed. Then the sand laying roller 61 retreats, and the sand laid on the sand bed 52 is sprayed with the binder according to the pattern slice shape of the next layer by the glue spraying member 7. Then the sand bed 52 is lowered by one layer of sand mold height, and the sand mold on the upper side of the sand bed 52 is lowered synchronously with the base frame 1. The sand pushing member continues to push the sand out of the upper side of the rolling shutter plate 4, and then the sand laying roller 61 moves again to realize the bonding of the sand mold on the sand bed 52. In this way, the required sand mold printing can be achieved by continuous reciprocation.

[0079] When other sand needs to be replaced, the slot 41 is moved to the upper side of another sand box 3 by moving the rolling shutter plate 4, another glue nozzle 731 is used, and the previous printing steps are repeated again to realize the rapid printing of a single sample of various types of sand.

[0080] In addition, by using the detachable pad 53, the glue can be sprayed onto the detachable pad 53, so that the pad can be removed from the sand bed 52 when the printed sand mold is taken out, thereby facilitating the removal of the sand mold.

[0081] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A sand feeding component capable of feeding various types of molding sand, characterized in that, It comprises: a base frame (1); a plurality of sandboxes (3) arranged along the length direction of the base frame (1), and the upper end of each sandbox (3) is open, and the bottom of the sandbox (3) is provided with a sand pushing plate (31) capable of moving upward; a rolling curtain plate (4) slidably arranged on the upper side of the base frame (1), and a slot (41) is formed on the rolling curtain plate (4), and the upper end of each sandbox (3) is aligned with the slot (41) in sequence as the rolling curtain plate (4) slides.

2. The sand feeding component capable of feeding various types of sand according to claim 1, characterized in that: a limiting protrusion (32) is fixed to the lower end of the sandbox (3) to limit the sand pushing plate (31) from falling off the lower end of the sandbox (3); a traction member (321) is arranged between the limiting protrusion (32) and the sand pushing plate (31) to limit the sand pushing plate (31) from falling off the upper end of the sandbox (3).

3. The sand charging component of claim 1, wherein, It further comprises: a sliding frame (2) vertically movably arranged on the lower side of the base frame (1) corresponding to the sandbox (3), and a plurality of sandboxes (3) are arranged on the upper side of the sliding frame (2); a plurality of sand pushing cylinders (33) are vertically fixed to the sliding frame (2) and correspond to each sandbox (3) to vertically move the sand pushing plate (31) of each sandbox (3).

4. The sand charging component capable of charging multiple types of sand according to claim 3, wherein: The lower end of each sandbox (3) is detachably fixed to the sliding frame (2).

5. The sand charging component of claim 3, wherein: One side of the sliding frame (2) is rotatably provided with a rotating shaft (22) having the same length direction as the sliding frame (2); The lower end of the sandbox (3) is fixed to the rotating shaft (22); The sliding frame (2) is further provided with a rotating driving member (221) for driving the rotating shaft (22) to rotate.

6. The sand charging component of claim 5, wherein: The base frame (1) is rotatably connected with a horizontal reversing roller (12) corresponding to the side away from the plurality of sandboxes (3); The base frame (1) is rotatably provided with a winding roller (13) corresponding to the lower side of the reversing roller (12), and both ends of the rolling curtain plate (4) pass through the reversing roller (12) and are fixed to the winding roller (13); The base frame (1) is further provided with a winding driving member (14) for rotating the winding roller (13).

7. A sand printing apparatus, characterized by, The sand feeding component capable of feeding various types of sand according to any one of claims 1-6 further comprises: a sand bed (52) vertically movably arranged on the base frame (1) corresponding to one end of the rolling curtain plate (4); a sand laying roller (61) movably arranged on the upper side of the rolling curtain plate (4) along the length direction of the rolling curtain plate (4) for pushing and laying the sand protruding from the upper side of the rolling curtain plate (4) to the sand bed (52); a glue spraying head (73) movably arranged on the upper side of the sand bed (52) for spraying glue on the sand bed (52).

8. A sand printing apparatus as claimed in claim 7, characterized in that: The glue spraying head (73) is provided with a plurality of glue spraying nozzles (731), and the base frame (1) is provided with a plurality of glue liquid tanks (74) on one side, and each glue liquid tank (74) is connected with each glue spraying nozzle (731) through a glue pipe (75).

9. A sand printing apparatus as claimed in claim 7, characterized in that: A detachable pad (53) is detachably connected to the upper side of the sand bed (52).

Images