A lost foam casting device for metal processing

Abstract

The present invention discloses a lost foam casting device for metal processing, belonging to the technical field of metal casting, which includes a conveying mechanism for conveying the mold. The conveying mechanism is provided with a casting mechanism for pouring molten metal into the mold and an injection mechanism for injecting molding sand into the mold. The conveying mechanism provided by the present invention can convey the lower mold, driving the lower mold to flow between the operations of loading the lost foam, injecting molding sand, casting, and pouring out the lost foam and molding sand, realizing a fully automatic lost foam casting operation with good continuity. When the upper template is moved onto the lower mold by the casting mechanism provided by the present invention, the insertion tube is simultaneously driven to insert into the docking tube, facilitating the pouring of molten metal into the lower mold with a high degree of automation. When the upper template and the lower mold are docked in the present invention, the sliding frame descends simultaneously, and the automatic placement of the lowermost lost foam into the lower mold is realized through the cooperation of the buckle module and the front and rear columns, achieving automatic mold placement.

Description

Technical Field

[0001] The present invention relates to the technical field of metal casting, and particularly relates to a lost foam casting device for metal processing. Background Art

[0002] Lost foam casting is a precision casting technology, also known as "foam casting" or "lost foam casting method". The biggest feature of this process is the use of foam plastic as the model material. During the casting process, the foam mold will "disappear" or vaporize at high temperature, thus forming a metal casting. Different from traditional sand casting, lost foam casting avoids the problems of rough casting surface and sand residue, so it can obtain relatively precise castings. Lost foam casting is widely used in industries such as aerospace, automotive, machinery, and energy, and is particularly suitable for producing castings with complex shapes, high precision, and high quality requirements. The existing lost foam casting devices for metal processing usually cannot achieve continuous and automatic lost foam casting operations, and the degree of automation is insufficient. Summary of the Invention

[0003] In view of the above technical problems, the technical solution adopted by the present invention is: a lost foam casting device for metal processing, including a conveying mechanism for conveying the mold. The conveying mechanism includes a bottom box, and a sand collecting box is fixedly installed below the bottom box. A casting mechanism for pouring molten metal into the mold and an injection mechanism for injecting molding sand into the mold are arranged on the conveying mechanism. The casting mechanism includes a sliding frame, and the sliding frame is fixedly installed on the bottom box. The injection mechanism includes a fixed frame, and a sliding frame is slidably installed on the fixed frame. The fixed frame is fixedly installed on the bottom box.

[0004] Further, the conveying mechanism includes a transmission frame fixedly installed on the bottom box. Two conveying rollers are rotatably installed on the transmission frame. A conveyor belt is wound around the two conveying rollers. A transmission motor is fixedly installed on the transmission frame. The motor shaft of the transmission motor is fixedly installed with the conveying roller on one side of the transmission motor. Six lower molds are fixedly installed on the conveyor belt. Two bottom support columns, front and rear columns, and left and right columns are fixedly installed inside the lower mold. Trapezoidal sliding grooves are arranged on the lower mold.

[0005] Further, a sloping orifice plate is arranged inside the bottom box. A number of holes for passing molding sand are arranged on the sloping orifice plate. The sand collecting box is filled with molding sand.

[0006] The driving motor drives the conveying roller to rotate, thereby driving the conveyor belt to move, and then driving the lower die to move. When the lower die moves below the sliding frame, the injection mechanism places the expendable pattern. The expendable pattern is located on the bottom support column, between the front and rear columns and the left and right columns. Subsequently, the molding sand is introduced into the lower die. When the lower die moves beside the sand collecting box, the molten metal is cast into the lower die through the casting mechanism. When the conveyor belt drives the lower die to move above the slope orifice plate, the molding sand and the cast metal finished product in the lower die fall onto the slope orifice plate. The molding sand falls into the sand collecting box, and the metal finished product slides along the slope orifice plate to the lowest point.

[0007] Further, the casting mechanism includes a sliding rail frame fixedly installed on the sliding-out frame. A chute frame is fixedly installed on the sliding rail frame. A vertical chute is provided on the chute frame. A cylinder frame is fixedly installed on the chute frame. An induction heating furnace is fixedly installed on the cylinder frame. The induction heating furnace contains molten metal for casting, and the induction heating furnace maintains the molten metal in a liquid state.

[0008] Further, a hose is fixedly installed below the induction heating furnace. A lower pull block is slidably installed in the vertical chute of the chute frame. A transmission column is fixedly installed on the lower pull block. The transmission column is fixedly installed with the sliding frame. A lower pull rod is rotatably installed on the lower pull block. A solenoid valve is fixedly installed on the lower pull block. The solenoid valve is communicated with the hose. An insertion pipe is fixedly installed below the solenoid valve.

[0009] Further, an upper template is slidably installed on the sliding-out frame. An upper guide frame is fixedly installed on the upper template. The upper guide frame is slidably installed with the sliding rail frame. A docking pipe is provided on the upper template. A pull rod is fixedly installed on the upper template. An extending electric cylinder is fixedly installed on the sliding rail frame. A movable frame is fixedly installed on the output end of the extending electric cylinder. The movable frame is slidably installed with the sliding rail frame. The movable frame is fixedly installed with the pull rod. The movable frame is rotatably installed with the lower pull rod.

[0010] Further, a sand scraping frame is fixedly installed on the upper template. A sand scraping plate is rotatably installed on the sand scraping frame. A torsion spring is provided between the sand scraping plate and the sand scraping frame. A sliding-in block is provided on the upper template to cooperate with the trapezoidal chute on the lower die.

[0011] At present, the current mold arrives beside the sliding-out rack with the lost foam pattern and molding sand. The electric cylinder extends, driving the movable rack to slide along the sliding rail rack. The upper template is pulled outward along the sliding-out rack through the pull rod, and the upper guide rack slides along the sliding rail rack. At the same time, the movable rack drives the lower pull block to descend along the vertical sliding groove of the sliding groove rack through the lower pull rod, and the hose is stretched. The lower pull block drives the sliding frame to descend synchronously through the transmission column. The sand exceeding the upper surface of the lower mold is scraped evenly by the sand scraping plate, and the excess sand is scraped onto the inclined orifice plate and then slides into the trapezoidal sliding groove under the lower mold. When the upper template moves directly above the lower mold, the insertion pipe just inserts into the docking pipe. Since the diameter of the insertion pipe is smaller than the inner diameter of the docking pipe, the insertion pipe can be smoothly inserted into the docking pipe. When the electric cylinder extends to the longest, the solenoid valve is opened, and the molten metal in the induction heating furnace enters the lower mold quantitatively. The molten metal melts the lost foam pattern in the lower mold for lost foam casting. Then it is cooled for a period of time. After the metal casting is shaped, the electric cylinder contracts, causing the upper template to return to the sliding-out rack, and the lower pull block and the insertion pipe rise back to the initial position. Subsequently, the conveyor belt drives the lower mold to continue moving, causing the lower mold that has completed casting to leave beside the sliding-out rack, and the next lower mold carrying the lost foam pattern and molding sand arrives beside the sliding-out rack for the next casting.

[0012] Further, the injection mechanism includes a pipe rack fixedly installed on the fixed frame. Four sand inlet pipes are fixedly installed on the pipe rack, and the molding sand in the sand collecting box is conveyed into the sand inlet pipes by an external pneumatic conveyor.

[0013] Further, two buckle modules are arranged below the sliding frame. The buckle module includes an outer push frame slidably installed on the sliding frame. An outer push triangular block is fixedly installed below the outer push frame. A support block is fixedly installed on the outer push frame. The support block is provided with a rounded corner. A tension spring is arranged between the outer push frame and the sliding frame. Several lost foam patterns are stacked on the support block.

[0014] When the sliding frame descends, when the outer push triangular block contacts the front and rear columns, under the action of the front and rear columns, the outer push triangular block, the outer push frame and the support block slide outward, and the tension spring is stretched. When the support block leaves below the lost foam pattern, the lost foam pattern falls onto the bottom support column in the lower mold. When the sliding frame ascends, after the outer push triangular block leaves the front and rear columns, the tension spring rebounds, causing the outer push triangular block, the outer push frame and the support block to slide inward. When the support block moves between the lost foam pattern in the lower mold and the lost foam pattern above it, the support block inserts between the two lost foam patterns and rises together with the lost foam pattern in the sliding frame, leaving only one lost foam pattern in the lower mold. Subsequently, the molding sand in the sand collecting box is sent into the lower mold through the sand inlet pipe by the pneumatic conveyor.

[0015] The beneficial effects of the present invention compared with the prior art are as follows: (1) The conveying mechanism provided by the present invention can convey the lower mold, driving the lower mold to flow between the operations of loading the lost foam pattern, injecting molding sand, casting, and pouring out the lost foam pattern and molding sand, realizing fully automatic lost foam casting operation with good continuity; (2) When the casting mechanism of the present invention moves the upper template onto the lower mold, it simultaneously drives the insertion tube to insert into the docking tube, facilitating the casting of molten metal into the lower mold with high automation; (3) When the casting mechanism of the present invention docks the upper template and the lower mold, it simultaneously drives the sliding frame to descend, and through the cooperation of the buckle module and the front and rear columns, it automatically places the lowermost lost foam pattern into the lower mold, realizing automatic mold placement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 is a schematic diagram of the structure of the conveying mechanism of the present invention Figure 1 .

[0018] Figure 3 is a schematic diagram of the structure of the conveying mechanism of the present invention Figure 2 .

[0019] Figure 4 is a schematic diagram of the structure of the casting mechanism of the present invention Figure 1 .

[0020] Figure 5 is a schematic diagram of the structure of the casting mechanism of the present invention Figure 2 .

[0021] Figure 6 is a schematic diagram of the structure of the casting mechanism of the present invention Figure 3 .

[0022] Figure 7 is a schematic diagram of the cooperation between the upper template and the lower mold of the present invention.

[0023] Figure 8 is a schematic diagram of the structure of the injection mechanism of the present invention Figure 1 .

[0024] Figure 9 is a schematic diagram of the structure of the injection mechanism of the present invention Figure 2 .

[0025] Figure 10 is Figure 9 a partial enlarged schematic diagram at A in

[0026] Figure 11 is a schematic diagram of the structure of the injection mechanism of the present invention Figure 3 .

[0027] Figure 12 is Figure 11Partial enlarged schematic diagram at B in the middle.

[0028] Reference numerals: 101 - bottom box; 102 - sand collection box; 103 - drive frame; 104 - drive motor; 105 - conveyor roller; 106 - conveyor belt; 107 - lower mold; 108 - ramp orifice plate; 109 - bottom support column; 110 - front and rear columns; 111 - left and right columns; 201 - sliding-out frame; 202 - sliding rail frame; 203 - extending electric cylinder; 204 - upper template; 205 - upper guide frame; 206 - docking pipe; 207 - pull rod; 208 - movable frame; 209 - lower pull rod; 210 - chute frame; 211 - lower pull block; 212 - solenoid valve; 213 - insertion pipe; 214 - hose; 215 - induction heating furnace; 216 - drive column; 217 - cylinder frame; 218 - sand scraping frame; 219 - sand scraping plate; 220 - torsion spring; 221 - sliding-in block; 301 - fixed frame; 302 - sliding frame; 303 - pipe rack; 304 - sand inlet pipe; 305 - expendable pattern; 306 - outer push frame; 307 - outer push triangular block; 308 - tension spring; 309 - support block. Detailed implementation manners

[0029] The following further describes the detailed implementation manners of the present invention with reference to the accompanying drawings.

[0030] Example: Refer to Figures 1 - 12 , an expendable pattern casting device for metal processing, including a conveying mechanism for conveying the mold. The conveying mechanism includes a bottom box 101, and a sand collection box 102 is fixedly installed below the bottom box 101. A casting mechanism for pouring molten metal into the mold and an injection mechanism for injecting molding sand into the mold are provided on the conveying mechanism. The casting mechanism includes a sliding-out frame 201, and the sliding-out frame 201 is fixedly installed on the bottom box 101. The injection mechanism includes a fixed frame 301, and a sliding frame 302 is slidably installed on the fixed frame 301. The fixed frame 301 is fixedly installed on the bottom box 101.

[0031] As Figure 2 、 Figure 3 shown, the conveying mechanism includes a drive frame 103 fixedly installed on the bottom box 101. Two conveyor rollers 105 are rotatably installed on the drive frame 103. A conveyor belt 106 is wound around the two conveyor rollers 105. A drive motor 104 is fixedly installed on the drive frame 103. The motor shaft of the drive motor 104 is fixedly installed with the conveyor roller 105 located on one side of the drive motor 104. Six lower molds 107 are fixedly installed on the conveyor belt 106. Two bottom support columns 109, front and rear columns 110, and left and right columns 111 are fixedly installed in the lower mold 107. A trapezoidal chute is provided on the lower mold 107.

[0032] As Figure 2 、 Figure 3As shown in the figure, a sloping orifice plate 108 is provided inside the bottom box 101. The sloping orifice plate 108 is provided with a number of holes for the passing of molding sand, and the sand collecting box 102 is filled with molding sand.

[0033] The drive motor 104 drives the conveyor roller 105 to rotate, thereby driving the conveyor belt 106 to move, and then driving the lower mold 107 to move. When the lower mold 107 moves below the sliding frame 302, the injection mechanism places the expendable mold 305. The expendable mold 305 is located on the bottom support column 109, between the front and rear columns 110 and the left and right columns 111. Subsequently, the molding sand is passed into the lower mold 107. When the lower mold 107 moves beside the sand collecting box 102, the molten metal is cast into the lower mold 107 through the casting mechanism. When the conveyor belt 106 drives the lower mold 107 to move above the sloping orifice plate 108, the molding sand and the cast metal product in the lower mold 107 fall onto the sloping orifice plate 108. The molding sand falls into the sand collecting box 102, and the metal product slides along the sloping orifice plate 108 to the lowest point.

[0034] As Figures 4 - 7 shown in the figure, the casting mechanism includes a sliding rail frame 202 fixedly installed on the sliding-out frame 201. A chute frame 210 is fixedly installed on the sliding rail frame 202. A vertical chute is provided on the chute frame 210. A cylinder frame 217 is fixedly installed on the chute frame 210. An induction heating furnace 215 is fixedly installed on the cylinder frame 217. The induction heating furnace 215 is filled with molten metal for casting, and the induction heating furnace 215 keeps the molten metal in a liquid state.

[0035] As Figures 4 - 7 shown in the figure, a hose 214 is fixedly installed below the induction heating furnace 215. A pull-down block 211 is slidably installed in the vertical chute of the chute frame 210. A transmission column 216 is fixedly installed on the pull-down block 211. The transmission column 216 is fixedly installed with the sliding frame 302. A pull-down rod 209 is rotatably installed on the pull-down block 211. An electromagnetic valve 212 is fixedly installed on the pull-down block 211. The electromagnetic valve 212 is communicated with the hose 214. An insertion tube 213 is fixedly installed below the electromagnetic valve 212.

[0036] As Figures 4 - 7 shown in the figure, an upper template 204 is slidably installed on the sliding-out frame 201. An upper guide frame 205 is fixedly installed on the upper template 204. The upper guide frame 205 is slidably installed with the sliding rail frame 202. A docking pipe 206 is provided on the upper template 204. A pull rod 207 is fixedly installed on the upper template 204. An extension cylinder 203 is fixedly installed on the sliding rail frame 202. A movable frame 208 is fixedly installed on the output end of the extension cylinder 203. The movable frame 208 is slidably installed with the sliding rail frame 202. The movable frame 208 is fixedly installed with the pull rod 207. The movable frame 208 is rotatably installed with the pull-down rod 209.

[0037] As Figures 4 - 7As shown, a sand scraping frame 218 is fixedly installed on the upper template 204. A sand scraping plate 219 is rotatably installed on the sand scraping frame 218. A torsion spring 220 is arranged between the sand scraping plate 219 and the sand scraping frame 218. A sliding block 221 that cooperates with the trapezoidal chute on the lower die 107 is arranged on the upper template 204.

[0038] When the lower die 107 drives the expendable pattern 305 and the molding sand to reach beside the sliding-out frame 201, the extending electric cylinder 203 extends, driving the movable frame 208 to slide along the sliding rail frame 202. The upper template 204 is pulled to slide outwards along the sliding-out frame 201 through the pull rod 207, and the upper guide frame 205 slides along the sliding rail frame 202. At the same time, the movable frame 208 pulls the lower pull block 211 to descend along the vertical chute of the chute frame 210 through the lower pull rod 209, and the hose 214 is stretched. The lower pull block 211 drives the sliding frame 302 to descend synchronously through the transmission column 216. The sand exceeding the upper surface of the lower die 107 is scraped evenly by the sand scraping plate 219, and the excess sand is scraped onto the inclined hole plate 108. Subsequently, the sliding block 221 enters the trapezoidal chute below the lower die 107. After the upper template 204 moves to directly above the lower die 107, the insertion pipe 213 just inserts into the docking pipe 206. Since the diameter of the insertion pipe 213 is smaller than the inner diameter of the docking pipe 206, the insertion pipe 213 can be smoothly inserted into the docking pipe 206. When the extending electric cylinder 203 extends to the longest, the solenoid valve 212 is opened, and the molten metal in the induction heating furnace 215 enters the lower die 107 quantitatively. The molten metal melts the expendable pattern 305 in the lower die 107 for expendable pattern casting. Subsequently, it is cooled for a period of time. After the metal casting is solidified, the extending electric cylinder 203 contracts, causing the upper template 204 to return to the sliding-out frame 201, and the lower pull block 211 and the insertion pipe 213 rise back to the initial position. Subsequently, the conveyor belt 106 drives the lower die 107 to continue moving, causing the cast lower die 107 to leave beside the sliding-out frame 201, and the next lower die 107 carrying the expendable pattern 305 and the molding sand arrives beside the sliding-out frame 201 for the next casting.

[0039] As Figures 7 - 12 shown, the injection mechanism includes a pipe rack 303 fixedly installed on the fixed frame 301. Four sand inlet pipes 304 are fixedly installed on the pipe rack 303. The molding sand in the sand collecting box 102 is conveyed into the sand inlet pipes 304 through an external pneumatic conveyor.

[0040] As Figures 7 - 12 shown, two buckle modules are arranged below the sliding frame 302. The buckle module includes an outer push frame 306 slidably installed on the sliding frame 302. An outer push triangular block 307 is fixedly installed below the outer push frame 306. A support block 309 is fixedly installed on the outer push frame 306. The support block 309 is provided with a rounded corner. A tension spring 308 is arranged between the outer push frame 306 and the sliding frame 302. A number of expendable patterns 305 are stacked on the support block 309.

[0041] When the sliding frame 302 descends, after the extrapolation triangular block 307 contacts the front and rear columns 110, under the action of the front and rear columns 110, the extrapolation triangular block 307, the extrapolation frame 306 and the support block 309 slide outwards, and the tension spring 308 is stretched. When the support block 309 leaves below the expendable pattern 305, the expendable pattern 305 falls onto the bottom support column 109 in the lower die 107. When the sliding frame 302 ascends, after the extrapolation triangular block 307 leaves the front and rear columns 110, the tension spring 308 rebounds, causing the extrapolation triangular block 307, the extrapolation frame 306 and the support block 309 to slide inwards. When the support block 309 moves between the expendable pattern 305 in the lower die 107 and the expendable pattern 305 above it, the support block 309 is inserted between the two expendable patterns 305 and rises together with the expendable pattern 305 in the sliding frame 302, leaving only one expendable pattern 305 in the lower die 107. Subsequently, the molding sand in the sand collecting box 102 is sent into the lower die 107 through the sand inlet pipe 304 by means of a pneumatic conveyor.

[0042] The working principle of a lost foam casting device for metal processing disclosed in the present invention is as follows: The drive motor 104 drives the conveyor roller 105 to rotate, thereby driving the conveyor belt 106 to move, and then driving the lower mold 107 to move. When the lower mold 107 moves below the sliding frame 302, as the sliding frame 302 descends, when the outer push triangular block 307 contacts the front and rear columns 110, under the action of the front and rear columns 110, the outer push triangular block 307, the outer push frame 306, and the support block 309 slide outward, and the tension spring 308 is stretched. When the support block 309 leaves below the lost foam pattern 305, the lost foam pattern 305 falls onto the bottom support column 109 in the lower mold 107. When the sliding frame 302 rises, after the outer push triangular block 307 leaves the front and rear columns 110, the tension spring 308 rebounds, causing the outer push triangular block 307, the outer push frame 306, and the support block 309 to slide inward. When the support block 309 moves between the lost foam pattern 305 in the lower mold 107 and the lost foam pattern 305 above it, the support block 309 is inserted between the two lost foam patterns 305 and rises together with the lost foam pattern 305 in the sliding frame 302, leaving only one lost foam pattern 305 in the lower mold 107. Subsequently, the molding sand in the sand collecting box 102 is sent into the lower mold 107 through the sand inlet pipe 304 by a pneumatic conveyor. When the lower mold 107 moves beside the sand collecting box 102, when the lower mold 107 with the lost foam pattern 305 and the molding sand reaches beside the sliding-out frame 201, the extending electric cylinder 203 extends, driving the movable frame 208 to slide along the sliding rail frame 202, pulling the upper template 204 to slide outward along the sliding-out frame 201 through the pull rod 207, and the upper guide frame 205 slides along the sliding rail frame 202. At the same time, the movable frame 208 drives the lower pull block 211 to descend along the vertical sliding groove of the sliding groove frame 210 through the lower pull rod 209, the hose 214 is stretched, and the lower pull block 211 drives the sliding frame 302 to descend synchronously through the transmission column 216. The excess sand on the upper surface of the lower mold 107 is scraped evenly by the sand scraping plate 219, and the excess sand is scraped onto the slope orifice plate 108 and then slides into the lower trapezoidal sliding groove of the lower mold 107 through the sliding block 221. After the upper template 204 moves directly above the lower mold 107, the insertion pipe 213 just inserts into the docking pipe 206. Since the diameter of the insertion pipe 213 is smaller than the inner diameter of the docking pipe 206, the insertion pipe 213 can be smoothly inserted into the docking pipe 206. When the extending electric cylinder 203 extends to the longest, the solenoid valve 212 is opened, and the molten metal in the induction heating furnace 215 enters the lower mold 107 quantitatively. The molten metal melts the lost foam pattern 305 in the lower mold 107 for lost foam casting. Subsequently, after cooling for a period of time, when the metal casting is solidified, the extending electric cylinder 203 contracts, causing the upper template 204 to return to the sliding-out frame 201, and the lower pull block 211 and the insertion pipe 213 rise back to the initial position. Subsequently, the conveyor belt 106 drives the lower mold 107 to continue moving, causing the cast lower mold 107 to leave beside the sliding-out frame 201, and the next lower mold 107 carrying the lost foam pattern 305 and the molding sand reaches beside the sliding-out frame 201.Perform the next casting. When the conveyor belt 106 drives the lower mold 107 to move above the inclined ramp orifice plate 108, the molding sand and the cast metal finished product in the lower mold 107 fall onto the inclined ramp orifice plate 108. The molding sand falls into the sand collecting box 102, and the metal finished product slides along the inclined ramp orifice plate 108 to the lowest point.,

[0043] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope of the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.,

Claims

1. A lost foam casting device for metal processing, comprising a conveying mechanism for conveying a mold, characterized in that: The conveying mechanism comprises a bottom box (101), a sand collecting box (102) is fixedly mounted below the bottom box (101), a casting mechanism for pouring molten metal into the mold and an injection mechanism for injecting molding sand into the mold are arranged on the conveying mechanism, the casting mechanism comprises a slide-out frame (201), the slide-out frame (201) is fixedly mounted on the bottom box (101), the injection mechanism comprises a fixed frame (301), a sliding frame (302) is slidably mounted on the fixed frame (301), and the fixed frame (301) is fixedly mounted on the bottom box (101); The casting mechanism comprises a sliding rail frame (202) fixedly mounted on a slide-out frame (201), a slide slot frame (210) fixedly mounted on the sliding rail frame (202), a vertical slide slot being provided on the slide slot frame (210), a barrel frame (217) fixedly mounted on the slide slot frame (210), and an induction heating furnace (215) fixedly mounted on the barrel frame (217); A hose (214) is fixedly installed below the induction heating furnace (215), a pull-down block (211) is slidably installed in the vertical slide of the slide frame (210), a transmission column (216) is fixedly installed on the pull-down block (211), the transmission column (216) is fixedly installed on the sliding frame (302), a pull-down rod (209) is rotatably installed on the pull-down block (211), a solenoid valve (212) is fixedly installed on the pull-down block (211), the solenoid valve (212) is connected to the hose (214), and an insertion tube (213) is fixedly installed below the solenoid valve (212); An upper template (204) is slidably mounted on the slide-out frame (201), an upper guide frame (205) is fixedly mounted on the upper template (204), the upper guide frame (205) is slidably mounted on the sliding rail frame (202), a butt joint pipe (206) is provided on the upper template (204), and a pull rod (207) is fixedly mounted on the upper template (204).

2. The lost foam casting device for metal processing according to claim 1, characterized in that: The conveying mechanism comprises a transmission frame (103) fixedly mounted on a bottom box (101); two conveying rollers (105) are rotatably mounted on the transmission frame (103); a conveying belt (106) is wound around the two conveying rollers (105); a transmission motor (104) is fixedly mounted on the transmission frame (103); a motor shaft of the transmission motor (104) is fixedly mounted on the conveying rollers (105) located on one side of the transmission motor (104); six lower molds (107) are fixedly mounted on the conveying belt (106); two bottom support columns (109), front and rear columns (110) and left and right columns (111) are fixedly mounted inside the lower mold (107); and a trapezoidal slide groove is provided on the lower mold (107).

3. The lost foam casting device for metal processing according to claim 2, characterized in that: The bottom box (101) is provided with a sloped orifice plate (108), and the sloped orifice plate (108) is provided with a plurality of holes for the molding sand to pass through. The sand collecting box (102) is filled with molding sand.

4. The lost foam casting device for metal processing according to claim 2, characterized in that: The induction heating furnace (215) contains molten metal for casting, and the induction heating furnace (215) maintains the molten metal in a liquid state.

5. The lost foam casting device for metal processing according to claim 1, characterized in that: An extension electric cylinder (203) is fixedly mounted on the sliding rail frame (202), a movable frame (208) is fixedly mounted on the output end of the extension electric cylinder (203), the movable frame (208) is slidably mounted on the sliding rail frame (202), the movable frame (208) is fixedly mounted on the pull rod (207), and the movable frame (208) is rotatably mounted on the lower pull rod (209).

6. The lost foam casting device for metal processing according to claim 5, characterized in that: A sand scraping frame (218) is fixedly mounted on the upper mold plate (204), a sand scraping plate (219) is rotatably mounted on the sand scraping frame (218), a torsion spring (220) is arranged between the sand scraping plate (219) and the sand scraping frame (218), and a sliding block (221) is arranged on the upper mold plate (204) to cooperate with the trapezoidal sliding groove on the lower mold (107).

7. The lost foam casting device for metal processing according to claim 1, characterized in that: The injection mechanism comprises a pipe rack (303) fixedly mounted on a fixed frame (301), and four sand inlet pipes (304) are fixedly mounted on the pipe rack (303). The molding sand in the sand collecting box (102) is transported to the sand inlet pipes (304) through an external pneumatic conveyor.

8. The lost foam casting device for metal processing according to claim 7, characterized in that: Two snap-fit ​​modules are arranged below the sliding frame (302), and the snap-fit ​​modules include an extrapolation frame (306) slidably mounted on the sliding frame (302), an extrapolation triangle block (307) is fixedly mounted below the extrapolation frame (306), a support block (309) is fixedly mounted on the extrapolation frame (306), and the support block (309) is provided with rounded corners, a tension spring (308) is arranged between the extrapolation frame (306) and the sliding frame (302), and a plurality of lost foams (305) are stacked on the support block (309).

Images