Lost foam casting device for metal processing

Abstract

The invention discloses an evanescent mode casting device for metal processing, which belongs to the technical field of metal casting and comprises a conveying mechanism for conveying a mold, and 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 can convey the lower mold and drive the lower mold to circulate among actions of loading into the lost foam, injecting molding sand, casting and pouring out of the lost foam and the molding sand, so that full-automatic lost foam casting operation is realized, and the continuity is good; according to the casting mechanism, when the upper mold plate is moved to the lower mold, the inserting pipe is driven to be inserted into the butt joint pipe at the same time, molten metal is conveniently cast into the lower mold, and the automation degree is high; when the upper mold plate and the lower mold are in butt joint, the sliding frame descends at the same time, the lowest evanescent mode is automatically placed in the lower mold through cooperation of the buckle module, the front column and the rear column, and automatic mold placing is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of metal casting, in particular 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 to form a metal casting. Unlike traditional sand casting, lost foam casting avoids the problems of rough casting surface and residual sand particles, so more precise castings can be obtained. Lost foam casting is widely used in aerospace, automobile, machinery, energy and other industries, and is particularly suitable for the production of castings with complex shapes, high precision and high quality requirements. The lost foam casting device for metal processing in the prior art is usually unable to achieve continuous and automatic lost foam casting operation, 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, comprising a conveying mechanism for conveying a mold, the conveying mechanism comprising a bottom box, a sand collecting box is fixedly installed under 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 comprises a slide-out frame, the slide-out frame is fixedly installed on the bottom box, the injection mechanism comprises a fixed frame, a sliding frame is slidably installed on the fixed frame, and the fixed frame is fixedly installed on the bottom box.

[0004] Furthermore, the conveying mechanism includes a transmission frame fixedly installed on the bottom box, two conveying rollers are rotatably installed on the transmission frame, and a conveyor belt is wrapped around the two conveying rollers. A transmission motor is fixedly installed on the transmission frame, and the motor shaft of the transmission motor is fixedly installed on the conveying roller located on one side of the transmission motor. Six lower molds are fixedly installed on the conveyor belt, and two bottom support columns, front and rear columns, and left and right columns are fixedly installed in the lower molds, and a trapezoidal slide groove is arranged on the lower mold.

[0005] Furthermore, a sloped orifice plate is arranged in the bottom box, a plurality of holes for the molding sand to pass through are arranged on the sloped orifice plate, and the molding sand is contained in the sand collecting box.

[0006] The transmission motor drives the conveyor roller to rotate, thereby driving the conveyor belt to move, thereby driving the lower mold to move. When the lower mold moves to the bottom of the sliding frame, the injection mechanism puts in the lost foam, which is located on the bottom support column, between the front and rear columns and the left and right columns. Then the molding sand is passed into the lower mold. When the lower mold moves next to the sand collecting box, the molten metal is cast into the lower mold through the casting mechanism. When the conveyor belt drives the lower mold to move above the sloped orifice plate, the molding sand and the cast metal product in the lower mold fall onto the sloped orifice plate, the molding sand falls into the sand collecting box, and the metal product slides to the lowest point along the sloped orifice plate.

[0007] Furthermore, the casting mechanism includes a sliding rail frame fixedly mounted on the slide-out frame, a slide trough frame fixedly mounted on the sliding rail frame, a vertical slide trough frame provided on the slide trough frame, a cylinder frame fixedly mounted on the slide trough frame, an induction heating furnace fixedly mounted on the cylinder frame, the induction heating furnace is filled with molten metal for casting, and the induction heating furnace maintains the molten metal in a liquid state.

[0008] Furthermore, a hose is fixedly installed under the induction heating furnace, a pull-down block is slidably installed in the vertical slide of the slide frame, a transmission column is fixedly installed on the pull-down block, the transmission column is fixedly installed on the sliding frame, a pull-down rod is rotatably installed on the pull-down block, a solenoid valve is fixedly installed on the pull-down block, the solenoid valve is connected to the hose, and an insertion tube is fixedly installed under the solenoid valve.

[0009] Furthermore, an upper template is slidably installed on the slide-out frame, an upper guide frame is fixedly installed on the upper template, the upper guide frame and the sliding rail frame are slidably installed, a docking tube 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 and the sliding rail frame are slidably installed, the movable frame and the pull rod are fixedly installed, and the movable frame and the lower pull rod are rotatably installed.

[0010] Furthermore, a sand scraper frame is fixedly mounted on the upper template, a sand scraper plate is rotatably mounted on the sand scraper frame, a torsion spring is arranged between the sand scraper plate and the sand scraper frame, and a sliding block is arranged on the upper template to cooperate with the trapezoidal slide groove on the lower mold.

[0011] When the lower mold arrives at the slide-out frame with the lost foam and molding sand, the electric cylinder is extended to drive the movable frame to slide along the sliding rail frame, and the upper template is pulled outward along the slide-out frame by the pull rod, and the upper guide frame slides along the sliding rail frame. At the same time, the movable frame pulls the lower pull block down along the vertical slide of the slide frame through the lower pull rod. The hose is stretched, and 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 slope hole plate. Then the sliding block enters the trapezoidal slide under the lower mold. When the upper template moves to the top of the lower mold, the insertion tube is just inserted into the butt tube. The diameter of the butt-jointed tube is smaller than the inner diameter of the butt-jointed tube, so that the insertion tube can be smoothly inserted into the butt-jointed tube. When the extension cylinder is extended 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 in the lower mold to carry out lost foam casting, and then cools for a period of time. After the metal casting is finalized, the extension cylinder contracts, so that the upper template returns to the slide-out frame, and the pull-down block and the insertion tube rise back to the initial position. Then the conveyor belt drives the lower mold to continue moving, so that the lower mold that has been cast leaves the slide-out frame, and the next lower mold carrying the lost foam and molding sand arrives at the slide-out frame for the next casting.

[0012] Furthermore, the injection mechanism comprises a pipe rack fixedly mounted on a fixed frame, and four sand inlet pipes are fixedly mounted on the pipe rack, and the molding sand in the sand collecting box is transported to the sand inlet pipes through an external pneumatic conveyor.

[0013] Furthermore, two snap-on modules are arranged below the sliding frame, and the snap-on modules include an extrapolation frame slidably mounted on the sliding frame, an extrapolation triangle block is fixedly mounted below the extrapolation frame, a support block is fixedly mounted on the extrapolation frame, the support block is provided with rounded corners, a tension spring is arranged between the extrapolation frame and the sliding frame, and a plurality of lost foams are stacked on the support block.

[0014] When the sliding frame descends, after the push-out triangle block contacts the front and rear columns, the push-out triangle block, the push-out frame and the support block slide outwards under the action of the front and rear columns, and the tension spring is stretched. When the support block leaves the bottom of the lost mold, the lost mold falls onto the bottom support column in the lower mold. When the sliding frame rises, after the push-out triangle block leaves the front and rear columns, the tension spring rebounds, causing the push-out triangle block, the push-out frame and the support block to slide inwards. When the support block moves to between the lost mold in the lower mold and the lost mold above it, the support block is inserted between the two lost molds and rises with the lost mold in the sliding frame, leaving only one lost mold 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] Compared with the prior art, the present invention has the following advantages: (1) the conveying mechanism provided in the present invention can convey the lower mold, drive the lower mold to flow through the actions of loading lost foam, injecting molding sand, casting and pouring out lost foam and molding sand, thereby realizing fully automatic lost foam casting operation with good continuity; (2) when the casting mechanism provided in the present invention moves the upper mold onto the lower mold, it also drives the insertion tube to be inserted into the docking tube, thereby facilitating the casting of molten metal into the lower mold, and the degree of automation is high; (3) when the casting mechanism provided in the present invention docks the upper mold and the lower mold, it also drives the sliding frame to descend, and the cooperation of the buckle module with the front and rear columns realizes the automatic placement of the lowest lost foam into the lower mold, thereby realizing automatic mold placement. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 Schematic diagram of the conveying mechanism structure of the present invention Figure 1 .

[0018] Figure 3 Schematic diagram of the conveying mechanism structure of the present invention Figure 2 .

[0019] Figure 4 Schematic diagram of the casting mechanism structure of the present invention Figure 1 .

[0020] Figure 5 The structure of the casting mechanism of the present invention is shown in FIG. Figure 2 .

[0021] Figure 6 Schematic diagram of the casting mechanism structure of the present invention Figure 3 .

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

[0023] Figure 8 Schematic diagram of the injection mechanism structure of the present invention Figure 1 .

[0024] Fig. 9 Schematic diagram of the injection mechanism structure of the present invention Figure 2 .

[0025] Fig.10 for Fig. 9 A local enlarged schematic diagram of point A in the middle.

[0026] Fig.11 Schematic diagram of the injection mechanism structure of the present invention Figure 3 .

[0027] Fig.12 for Fig.11A local enlarged schematic diagram of point B in the middle.

[0028] Reference numerals: 101-bottom box; 102-sand collecting box; 103-transmission frame; 104-transmission motor; 105-conveying roller; 106-conveying belt; 107-lower mold; 108-inclined orifice plate; 109-bottom support column; 110-front and rear columns; 111-left and right columns; 201-slide-out frame; 202-sliding rail frame; 203-extending electric cylinder; 204-upper template; 205-upper guide frame; 206-butt pipe; 207-pull rod; 208-movable frame; 209-lower pull rod; 210-slide rack; 211-pull-down block; 212-solenoid valve; 213-insertion tube; 214-hose; 215-induction heating furnace; 216-transmission column; 217-drum rack; 218-sand scraping rack; 219-sand scraping plate; 220-torsion spring; 221-slide-in block; 301-fixed rack; 302-sliding frame; 303-pipe rack; 304-sand inlet pipe; 305-lost foam; 306-extension rack; 307-extension triangle block; 308-tension spring; 309-support block. DETAILED DESCRIPTION

[0029] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0030] Example: Reference Figure 1-Figure 12 A lost foam casting device for metal processing includes a conveying mechanism for conveying a mold, the conveying mechanism includes a bottom box 101, a sand collecting 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 arranged on the conveying mechanism, the casting mechanism includes a slide-out frame 201, the slide-out frame 201 is fixedly installed on the bottom box 101, the injection mechanism includes a fixed frame 301, a sliding frame 302 is slidably installed on the fixed frame 301, and the fixed frame 301 is fixedly installed on the bottom box 101.

[0031] like Figure 2 , Figure 3 As shown, the conveying mechanism includes a transmission frame 103 fixedly mounted on the bottom box 101, two conveying rollers 105 are rotatably mounted on the transmission frame 103, and a conveyor belt 106 is wound around the two conveying rollers 105. A transmission motor 104 is fixedly mounted on the transmission frame 103, and the 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 conveyor belt 106, and two bottom support columns 109, front and rear columns 110, and left and right columns 111 are fixedly mounted in the lower mold 107. A trapezoidal slide groove is arranged on the lower mold 107.

[0032] like Figure 2 , Figure 3As shown, a sloped orifice plate 108 is provided in the bottom box 101, and a plurality of holes for the molding sand to pass through are provided on the sloped orifice plate 108, and the molding sand is contained in the sand collecting box 102.

[0033] The transmission motor 104 drives the conveying roller 105 to rotate, thereby driving the conveyor belt 106 to move, thereby driving the lower mold 107 to move. When the lower mold 107 moves to the bottom of the sliding frame 302, the injection mechanism puts in the lost mold 305, and the lost mold 305 is located on the bottom support column 109, between the front and rear columns 110 and the left and right columns 111. Then the molding sand is passed into the lower mold 107. When the lower mold 107 moves next to 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 slope orifice plate 108, the molding sand and the cast metal product in the lower mold 107 fall onto the slope orifice plate 108, the molding sand falls into the sand collecting box 102, and the metal product slides to the lowest point along the slope orifice plate 108.

[0034] like Figure 4-Figure 7 As shown, the casting mechanism includes 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 is provided on the slide slot frame 210, a cylinder frame 217 fixedly mounted on the slide slot frame 210, an induction heating furnace 215 fixedly mounted on the cylinder frame 217, the induction heating furnace 215 is filled with molten metal for casting, and the induction heating furnace 215 maintains the molten metal in a liquid state.

[0035] like Figure 4-Figure 7 As shown, 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.

[0036] like Figure 4-Figure 7 As shown, an upper template 204 is slidably installed on the slide-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 tube 206 is provided on the upper template 204, a pull rod 207 is fixedly installed on the upper template 204, an extending electric cylinder 203 is fixedly installed on the sliding rail frame 202, a movable frame 208 is fixedly installed on the output end of the extending electric 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, and the movable frame 208 is rotatably installed with the lower pull rod 209.

[0037] like Figure 4-Figure 7As shown, a sand scraper frame 218 is fixedly installed on the upper template 204, a sand scraper plate 219 is rotatably installed on the sand scraper frame 218, a torsion spring 220 is arranged between the sand scraper plate 219 and the sand scraper frame 218, and a sliding block 221 that cooperates with the trapezoidal slide groove on the lower mold 107 is arranged on the upper template 204.

[0038] When the lower mold 107 brings the lost foam 305 and the molding sand to the side of the slide-out frame 201, the electric cylinder 203 is extended to drive the movable frame 208 to slide along the sliding rail frame 202, and the upper template 204 is pulled outward along the slide-out frame 201 by 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 slide groove of the slide groove 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, and the sand exceeding 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 the sliding block 221 enters the trapezoidal slide groove below the lower mold 107. When the upper template 204 moves to the top of the lower mold 107, the insertion tube 213 is just inserted into the docking tube 2 06, since the diameter of the insertion tube 213 is smaller than the inner diameter of the docking tube 206, the insertion tube 213 can be smoothly inserted into the docking tube 206. When the extension cylinder 203 is extended 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 305 in the lower mold 107 to perform lost foam casting, and then cools for a period of time. After the metal casting is finalized, the extension cylinder 203 contracts, so that the upper mold plate 204 returns to the slide-out frame 201, and the pull-down block 211 and the insertion tube 213 rise back to the initial position. Then the conveyor belt 106 drives the lower mold 107 to continue moving, so that the lower mold 107 that has been cast leaves the slide-out frame 201, and the next lower mold 107 carrying the lost foam 305 and molding sand arrives at the slide-out frame 201 for the next casting.

[0039] like Figure 7-Figure 12 As shown, the injection mechanism includes 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.

[0040] like Figure 7-Figure 12 As shown, two snap-in modules are arranged below the sliding frame 302, and the snap-in 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 molds 305 are stacked on the support block 309.

[0041] When the sliding frame 302 descends, after the push triangle block 307 contacts the front and rear columns 110, the push triangle block 307, the push frame 306 and the support block 309 slide outward under the action of the front and rear columns 110, and the tension spring 308 is stretched. When the support block 309 leaves the bottom of the lost mold 305, the lost mold 305 falls onto the bottom support column 109 in the lower mold 107. When the sliding frame 302 rises, the push triangle block 307 leaves the front and rear columns 110, and the tension spring 308 rebounds, so that The extrapolated triangle block 307, the extrapolated frame 306 and the supporting block 309 slide inwardly. When the supporting block 309 moves to between the lost foam 305 in the lower mold 107 and the lost foam 305 above it, the supporting block 309 is inserted between the two lost foams 305, and rises together with the lost foam 305 in the sliding frame 302, leaving only one lost foam 305 in the lower mold 107, and then the molding sand in the sand collecting box 102 is sent into the lower mold 107 through the sand inlet pipe 304 by the pneumatic conveyor.

[0042] The working principle of the lost foam casting device for metal processing disclosed in the present invention is as follows: the transmission motor 104 drives the conveying roller 105 to rotate, thereby driving the conveying belt 106 to move, thereby driving the lower mold 107 to move, when the lower mold 107 moves to the bottom of the sliding frame 302, when the sliding frame 302 descends, when the outward push triangle block 307 contacts the front and rear columns 110, under the action of the front and rear columns 110, the outward push triangle block 307, the outward push frame 306 and the support block 309 slide outward, and the tension spring 308 is stretched. When the support block 309 leaves the bottom of the lost foam 305, the lost foam 305 falls on the bottom support column 109 in the lower mold 107, when the sliding frame 302 rises, the outward push triangle block 307 leaves the front and rear columns 110, and the tension spring 308 is stretched. The spring 308 rebounds, causing the push triangle block 307, the push frame 306 and the support block 309 to slide inward. When the support block 309 moves to between the lost foam 305 in the lower mold 107 and the lost foam 305 above it, the support block 309 is inserted between the two lost foams 305, and rises with the lost foam 305 in the sliding frame 302, leaving only one lost foam 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 the pneumatic conveyor. When the lower mold 107 moves to the side of the sand collecting box 102, the lower mold 107 brings the lost foam 305 and the molding sand to the side of the slide-out frame 201, extends the electric cylinder 203 to extend, and drives the movable frame 208 to slide along the sliding rail frame 202. The upper template 204 is pulled outward along the slide-out frame 201 by 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 down along the vertical slide of the slide 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 sand exceeding 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. Then the sliding block 221 enters the trapezoidal slide below the lower mold 107. When the upper template 204 moves to the top of the lower mold 107, the insertion tube 213 is just inserted into the butt joint 206. Since the diameter of the insertion tube 213 is smaller than the inner diameter of the butt joint 206, the insertion tube 213 is inserted into the butt joint 206. The diameter of the insert tube 213 is such that the insert tube 213 can be smoothly inserted into the docking tube 206. When the extending electric cylinder 203 is extended 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 305 in the lower mold 107 to perform lost foam casting. Then it is cooled for a period of time. After the metal casting is finalized, the extending electric cylinder 203 contracts, so that the upper mold plate 204 returns to the slide-out frame 201, and the lower pull-down block 211 and the insert tube 213 rise back to the initial position. Then the conveyor belt 106 drives the lower mold 107 to continue to move, so that the lower mold 107 that has been cast leaves the slide-out frame 201. The next lower mold 107 carrying the lost foam 305 and molding sand arrives at the slide-out frame 201.When the conveyor belt 106 drives the lower mold 107 to move above the slope hole plate 108, the molding sand and the cast metal product in the lower mold 107 fall onto the slope hole plate 108, the molding sand falls into the sand collecting box 102, and the metal product slides along the slope hole plate 108 to the lowest point.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope of the present invention, which 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 a 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).

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 casting mechanism comprises a sliding rail frame (202) fixedly mounted on a slide-out frame (201), a chute frame (210) fixedly mounted on the sliding rail frame (202), a vertical chute being provided on the chute frame (210), a barrel frame (217) fixedly mounted on the chute frame (210), an induction heating furnace (215) fixedly mounted on the barrel frame (217), the induction heating furnace (215) containing molten metal for casting, and the induction heating furnace (215) maintaining the molten metal in a liquid state.

5. The lost foam casting device for metal processing according to claim 4, characterized in that: 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).

6. The lost foam casting device for metal processing according to claim 5, characterized in that: 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), a pull rod (207) is fixedly mounted on the upper template (204), 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).

7. The lost foam casting device for metal processing according to claim 6, 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).

8. 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.

9. The lost foam casting device for metal processing according to claim 8, 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).

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