A high-efficiency gear casting equipment

Abstract

The present invention relates to the field of gear casting technology, and in particular to a high-efficiency gear casting molding equipment, comprising a base and a molding sand cavity, wherein the molding sand cavity is fixedly mounted on the top of the base, a bracket is welded to the top of the base, a hydraulic press is fixedly mounted below the bracket, the output shaft of the hydraulic press is fixedly connected to a pressure frame, a mold receiving cavity is fixedly mounted below the pressure frame, and a sand pressing disc is rotatably mounted on the outside of the mold receiving cavity. By stirring the molding sand with a spiral dial, the molding sand can be effectively and evenly distributed inside the molding sand cavity, avoiding the problem of loose sand core after the sand pressing disc is pressed. By rotating the tooth mold 1, the tooth mold 2 and the casting gear, the sand core is crushed to avoid the solidification of the molding sand affecting the effect of the next casting. The spiral dial is driven by the rotating shaft to revolve, the compacted molding sand is crushed, and in conjunction with the rotation of the tooth mold 2, the molding sand inside the molding sand cavity is mixed again, thereby improving the utilization rate of the molding sand.

Description

Technical Field

[0001] The present invention relates to the technical field of gear casting, in particular to a high-efficiency gear casting and molding equipment. Background Art

[0002] Early gears were mostly made by hand or forged, with low precision and long processing cycle, which could not meet the needs of modern industry. With the continuous advancement of technology, the manufacturing process of gears has also evolved from simple to complex, from rough to precise. Gear casting, as an ancient and commonly used gear manufacturing process, has played an important role in this process. In short, the gear casting technology is to inject molten metal into the mold, wait for it to cool and solidify, and then take it out to obtain a gear with a specific shape and size. For example, a gear casting molding device in the publication number: CN116140550B, when in use, when the bottom of the upper mold base contacts the top of the annular sand pressing plate, the top of the gear mold fits with the bottom of the upper mold base, and then the upper mold is moved. Foundry sand is added to the seat, and then the pressure wheel rotates around the outer side of the annular sand pressing plate, so that the inner arc wall of the annular sand pressing plate continuously squeezes the casting sand toward the outer side of the gear mold, so that the casting sand squeezed by the annular sand pressing plate cooperates with the gear mold to form a gear casting molding cavity for casting. However, although the molding sand can be squeezed toward the gear mold by the eccentric rotation of the annular sand pressing plate, the extruded molding sand is not fixed, resulting in the eccentric rotation of the annular sand pressing plate, which can only play the role of gathering the molding sand, and cannot form the molding sand into a sand core. At the same time, the molding sand is still not limited during the casting process, which makes the molding sand loose during the pouring process. After the molten metal expands thermally, the molding sand cannot shape the molten metal, resulting in casting failure. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems in the background technology and to propose a high-efficiency gear casting and molding equipment.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A high-efficiency gear casting molding equipment includes a base and a molding sand cavity, the molding sand cavity is fixedly installed on the top of the base, the top of the base is welded with a bracket, a hydraulic press is fixedly installed below the bracket, the output shaft of the hydraulic press is fixedly connected to a pressure frame, a mold receiving cavity is fixedly installed below the pressure frame, a sand pressing disc is rotatably installed on the outside of the mold receiving cavity, the sand pressing disc is rotatably installed inside the molding sand cavity, a mounting hole 1 and a mounting hole 2 are opened on the top of the mold receiving cavity, a casting pipe and a discharge pipe are fixedly installed inside the mounting hole 1 and the mounting hole 2 respectively. The air pipe, a motor 1 is fixedly installed on the top of the mold-collecting cavity, and a gear 1 is fixedly connected to the output shaft of the motor 1. A gear ring 2 is fixedly installed on the top of the sand pressing disc, and the gear 1 and the gear ring 2 are meshed with each other. A gear ring 1 is slidably installed on the outside of the molding sand cavity, and a slide is integrally formed on the bottom of the gear ring 1. A slide groove is provided on the outer peripheral wall of the molding sand cavity, and the slide is slidably installed inside the slide groove 1. The gear ring 1 is located above the sand pressing disc, and a sand cavity chassis is movably installed inside the molding sand cavity, and the sand cavity chassis is located below the sand pressing disc.

[0006] In the above-mentioned high-efficiency gear casting molding equipment, the side wall of the sand pressing disc is provided with a plurality of evenly distributed sliding holes, and a rotating shaft is movably installed inside the sliding hole. The rotating shaft is rotatably installed on the side wall of the sand chamber bottom plate, and a gear three is fixedly installed on the top of the rotating shaft. The gear three is meshed with the gear ring one, and a sand pressing cover is integrally formed at the bottom of the sand pressing disc, and the rotating shaft is located inside the sand pressing cover.

[0007] In the above-mentioned high-efficiency gear casting molding equipment, the side wall of the sand pressing cover is integrally formed with two support rods 1, and a spiral dial is movably sleeved on the outer side of the rotating shaft. The spiral dial is located between the two support rods 1, and a telescopic cylinder is slidably installed inside the spiral dial. The telescopic cylinder is located inside the sand pressing cover, and a number of evenly distributed springs 3 are provided between the inner wall of the spiral dial and the side wall of the rotating shaft.

[0008] In the above-mentioned high-efficiency gear casting molding equipment, the inner wall of the molding sand cavity is provided with a plurality of evenly distributed movable grooves, and a convex tooth plate is movably installed inside the molding sand cavity. A rotating rod is integrally formed at the thin-walled end of the convex tooth plate, and the rotating rod is rotatably installed on the side wall of the movable groove. A spring is provided between the side wall of the convex tooth plate and the movable groove.

[0009] In the above-mentioned high-efficiency gear casting and molding equipment, a tooth mold 2 is movably installed inside the mold receiving cavity, and an electric push rod 2 is provided between the mold receiving cavity and the tooth mold 2. A rotating disk is rotatably installed at the bottom of the base, and a sliding bracket is slidably installed below the rotating disk. A tray 1 is fixedly installed above the sliding bracket, and a tooth mold 1 is integrally formed on the top of the tray 1. The tooth mold 2 is located above the tooth mold 1, and an electric push rod 1 is fixedly installed on the side wall of the base support leg, and the electric push rod 1 is located below the rotating disk.

[0010] In the above-mentioned high-efficiency gear casting and molding equipment, a shaft rod is slidably installed inside the tooth mold 2, and a square rod is integrally formed at the bottom of the shaft rod. A square hole is provided on the side wall of the tooth mold 1, and the square rod is slidably installed inside the square hole. A locking groove is provided at the bottom of the square rod, and a spring locking block is movably installed inside the square hole, and the spring locking block is slidably installed on the outside of the locking groove.

[0011] In the above-mentioned high-efficiency gear casting and molding equipment, a second motor is fixedly installed at the bottom of the base, the output shaft of the second motor is fixedly connected to a second gear, the side wall of the rotating disk is integrally formed with a tooth surface, the tooth surface and the second gear are meshed, the bottom of the rotating disk is integrally formed with a first slide bar, the side wall of the sliding bracket is provided with a first slide hole, the first slide hole is slidably installed on the outside of the first slide bar, and a second spring is provided between the bottom of the rotating disk and the top of the sliding bracket.

[0012] In the above-mentioned high-efficiency gear casting and molding equipment, a scraping ring is rotatably installed inside the mold cavity, and the second tooth mold is slidably inserted into the inside of the scraping ring. A casting hole and an exhaust hole are opened inside the second tooth mold, and the casting hole and the casting pipe are connected to each other, and the exhaust hole and the exhaust pipe are connected to each other. A tooth mold sleeve is rotatably installed inside the sand cavity chassis, and the tooth mold sleeve is slidably sleeved on the outside of the first tooth mold.

[0013] Compared with the existing technology, the advantages of the present invention are:

[0014] 1. The present invention cooperates between the sand pressing disc and the spiral dial. When the sand pressing disc drives the gear ring 1 to move downward, the motor 1 is started, so that the sand pressing disc drives the rotating shaft to rotate, and the rotating shaft drives the spiral dial to revolve. The molding sand inside the molding sand cavity is moved by the revolution of the spiral dial, so that the molding sand is evenly distributed inside the molding sand cavity. During the revolution of the spiral dial, the gear 3 and the gear ring 1 engage with each other, so that the spiral dial rotates on itself, thereby improving the uniformity of the molding sand inside the molding sand cavity. By moving the molding sand by the spiral dial, the molding sand can be effectively evenly distributed inside the molding sand cavity, thereby avoiding the problem of loose sand core after the sand pressing disc is tightened.

[0015] 2. The present invention cooperates between the rotating disk and the tooth mold 2. When the tooth mold 2 moves downward to discharge the cast gear, the motor 2 is started and drives the rotating disk to rotate. The rotating disk drives the sliding bracket to rotate, and the sliding bracket drives the tray 1 to rotate. The tray 1 drives the shaft rod and the tooth mold 2 to rotate through the square hole and the square rod, so that the tooth mold 2 and the tooth mold 1 drive the casting gear to rotate. During the rotation of the tooth mold 1, the tooth mold 2 and the casting gear, the sand core is broken to prevent the solidification of the molding sand from affecting the effect of the next casting.

[0016] 3. The present invention cooperates between the convex tooth plate and the spiral dial. When the tooth mold 2 moves downward to discharge the cast gear, the motor is started, so that the sand pressing plate drives the rotating shaft to rotate, and the rotating shaft drives the spiral dial to revolve, thereby crushing the compacted molding sand. In conjunction with the rotation of the tooth mold 2, the molding sand inside the molding sand cavity is mixed again, thereby improving the utilization rate of the molding sand. During the revolution of the spiral dial, the convex tooth plate contacts the spiral dial, causing the spiral dial to move toward the tooth mold 2, thereby improving the effect of the spiral dial on crushing the molding sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0019] Figure 3 For the present invention Figure 2 A magnified schematic diagram of point A in the middle;

[0020] Figure 4 For the present invention Figure 2 A magnified schematic diagram of point B in the middle;

[0021] Figure 5 It is a partial structural cross-sectional view of the base in the present invention;

[0022] Figure 6 This is a cross-sectional view of the structure of the medium-sized sand cavity of the present invention;

[0023] Figure 7 Schematic diagram of the structure of the convex tooth plate in the present invention;

[0024] Figure 8 This is a disassembled schematic diagram of the medium-sized sand cavity, sand pressing plate and mold cavity of the present invention;

[0025] Figure 9 This is a disassembled schematic diagram of the rotating disk, tray 1 and tooth mold 2 in the present invention;

[0026] Figure 10 This is a disassembled schematic diagram of the rotating shaft and the spiral dial in the present invention.

[0027] In the figure: 1, base; 11, sand cavity; 111, gear ring 1; 112, convex tooth plate; 113, movable groove; 114, slide groove 1; 115, slide plate; 116, spring 1; 117, rotating rod; 12, sand pressing plate; 121, gear ring 2; 122, sand pressing cover; 123, support rod 1; 124, sliding hole; 131, casting pipe; 132, hydraulic press; 133, electric push rod 1; 134, pressure frame; 135, exhaust pipe; 136, bracket; 14, mold cavity; 141, electric push rod 2; 142, motor 1; 143, gear 1; 144, sand scraping ring; 145, mounting hole 1; 1 46. Mounting hole 2; 21. Rotating plate; 211. Slide rod 1; 212. Motor 2; 213. Gear 2; 214. Tooth surface; 22. Tray 1; 221. Sliding bracket; 222. Spring 2; 223. Slide hole 1; 224. Tooth die 1; 225. Square hole; 231. Tooth die 2; 232. Shaft; 233. Square rod; 234. Locking groove; 235. Spring lock block; 236. Exhaust hole; 237. Casting hole; 241. Rotating shaft; 242. Gear 3; 243. Screw cylinder; 244. Telescopic cylinder; 245. Spring 3; 251. Sand cavity bottom plate; 252. Tooth die ring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0030] Reference Figure 1 - Figure 10As shown, a high-efficiency gear casting molding equipment includes a base 1 and a molding sand cavity 11. The molding sand cavity 11 is fixedly mounted on the top of the base 1. A bracket 136 is welded to the top of the base 1. A hydraulic press 132 is fixedly mounted below the bracket 136. The output shaft of the hydraulic press 132 is fixedly connected to a press frame 134. A mold receiving cavity 14 is fixedly mounted below the press frame 134. A sand pressing disc 12 is rotatably mounted on the outside of the mold receiving cavity 14. The sand pressing disc 12 is rotatably mounted inside the molding sand cavity 11. A mounting hole 145 and a mounting hole 2 146 are opened on the top of the mold receiving cavity 14. A casting pipe 131 and an exhaust pipe are fixedly mounted inside the mounting hole 145 and the mounting hole 2 146, respectively. 135. A motor 142 is fixedly installed on the top of the mold receiving cavity 14. The output shaft of the motor 142 is fixedly connected to a gear 143. A gear ring 2 121 is fixedly installed on the top of the sand pressing disc 12. The gear 143 and the gear ring 2 121 are engaged with each other. A gear ring 111 is slidably installed on the outer side of the sand molding cavity 11. A slide 115 is integrally formed on the bottom of the gear ring 111. A slide groove 114 is provided on the outer peripheral wall of the sand molding cavity 11. The slide 115 is slidably installed inside the slide groove 114. The gear ring 111 is located above the sand pressing disc 12. A sand cavity chassis 251 is movably installed inside the sand molding cavity 11. The sand cavity chassis 251 is located below the sand pressing disc 12.

[0031] Among them, the working principle of the sand pressing disc 12 is as follows: when the hydraulic press 132 drives the mold receiving cavity 14 to move upward, the mold receiving cavity 14 drives the sand pressing disc 12 to move upward, and after the side wall of the sand pressing disc 12 hits the bottom of the gear ring 111, the gear ring 111 follows the sand pressing disc 12 to move upward, and when the hydraulic press 132 drives the mold receiving cavity 14 to move downward, the sand pressing disc 12 follows the mold receiving cavity 14 to move downward, and at the same time, the motor 142 is started so that the gear 143 and the gear ring 2 121 engage with each other, and the sand pressing disc 12 rotates during the downward movement and drives the gear ring 111 to move downward. When the molding sand cavity 11 hits the bottom of the gear ring 111, the motor 142 is turned off, the sand pressing disc 12 stops rotating, and the mold receiving cavity 14 drives the sand pressing disc 12 to continue moving toward the sand cavity bottom plate 251, so that the molding sand between the sand pressing disc 12 and the sand cavity bottom plate 251 is compacted.

[0032] like Figure 2 、 Figure 3 、 Figure 8 and Figure 10As shown, the side wall of the sand pressing disc 12 is provided with a number of evenly distributed sliding holes 124, and a rotating shaft 241 is movably installed inside the sliding hole 124. The rotating shaft 241 is rotatably installed on the side wall of the sand chamber bottom plate 251, and a gear three 242 is fixedly installed on the top of the rotating shaft 241. The gear three 242 is engaged with the gear ring 111. The bottom of the sand pressing disc 12 is integrally formed with a sand pressing cover 122, and the rotating shaft 241 is located inside the sand pressing cover 122. A telescopic cylinder 244 is slidably installed inside the spiral dial cylinder 243, and the telescopic cylinder 244 is located inside the sand pressing cover 122.

[0033] Among them, the working principle of the spiral dial 243 is as follows: when the sand pressing plate 12 drives the gear ring 111 to move downward and rotate, the sand pressing plate 12 drives the rotating shaft 241 to rotate, so that the rotating shaft 241 drives the spiral dial 243 to revolve. During the revolution of the spiral dial 243, the molding sand inside the molding sand cavity 11 is moved, so that the molding sand is evenly distributed inside the molding sand cavity 11. When the sand pressing plate 12 drives the rotating shaft 241 to rotate, the rotating shaft 241 drives the gear three 242 to move around the gear ring 111. During the movement of the gear three 242, the gear three 242 and the gear ring 111 engage with each other, causing the spiral dial 243 to rotate on its own, thereby preventing the molding sand between the two spiral dials 243 from moving with the spiral dial 243 during the process of the spiral dial 243 moving the molding sand inside the molding sand cavity 11, thereby improving the uniformity of the molding sand inside the molding sand cavity 11.

[0034] Further references Figure 2 and Figure 8 To explain, the working principle of the sand pressing cover 122 is: when the mold cavity 14 drives the sand pressing plate 12 to move toward the sand cavity bottom plate 251, so that the molding sand between the sand pressing plate 12 and the sand cavity bottom plate 251 is compacted, the sand pressing plate 12 drives the sand pressing cover 122 to move toward the sand cavity bottom plate 251, so that the sand pressing cover 122 compacts the molding sand on the side wall of the spiral dial 243, thereby preventing the molding sand around the spiral dial 243 from becoming loose, which causes the sand core to be damaged after the sand core expands during the casting process.

[0035] like Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 9 As shown, a tooth mold 231 is movably installed inside the mold receiving cavity 14, and an electric push rod 2 141 is provided between the mold receiving cavity 14 and the tooth mold 231. A rotating disk 21 is rotatably installed at the bottom of the base 1, and a sliding bracket 221 is slidably installed below the rotating disk 21. A tray 1 22 is fixedly installed above the sliding bracket 221, and a tooth mold 1 224 is integrally formed on the top of the tray 1 22. The tooth mold 231 is located above the tooth mold 1 224, and an electric push rod 133 is fixedly installed on the side wall of the base 1 leg, and the electric push rod 133 is located below the rotating disk 21.

[0036] like Figure 4 and Figure 9 As shown, a shaft rod 232 is slidably installed inside the tooth mold 231, and a square rod 233 is integrally formed at the bottom of the shaft rod 232. A square hole 225 is provided on the side wall of the tooth mold 1 224. The square rod 233 is slidably installed inside the square hole 225. A locking groove 234 is provided at the bottom of the square rod 233. A spring locking block 235 is movably installed inside the square hole 225, and the spring locking block 235 is slidably installed on the outside of the locking groove 234.

[0037] Among them, the working principle of the tooth mold 231 and the shaft rod 232 is: after the sand pressing plate 12 compacts the molding sand inside the molding sand cavity 11, the electric push rod 2 141 drives the tooth mold 231 to move upward. During the upward movement of the tooth mold 231, the spring locking block 235 is located inside the locking groove 234, and the shaft rod 232 is locked, so that the shaft rod 232 slides inside the tooth mold 231. After the tooth mold 231 moves upward, there is a sand core between the tooth mold 1 224 and the tooth mold 2 231. After pouring molten metal into the casting tube 131, the molten metal flows into the sand core for casting. When the molten metal solidifies, a casting gear is formed. The electric push rod 2 141 drives the tooth mold 2 231 to move downward, and the tooth mold 2 231 contacts the casting gear. The wheel causes the casting gear to drive tray 1 22 to move downward. When tray 1 22 moves to the bottom, the electric push rod 2 141 drives the tooth mold 2 231 to return to its position. When the shaft 232 slides to the bottom of the tooth mold 231, the tooth mold 231 drives the shaft 232 to move upward. The spring lock block 235 slides out of the lock groove 234, the shaft 232 is unlocked and moves upward with the tooth mold 231. When the tooth mold 231 is returned to its position, the electric push rod 133 is started, and the electric push rod 133 pushes the casting gear above the tray 1 22 and returns it to its position. At this time, tray 1 22 is returned to its position. During the return process, the bottom of the square hole 225 contacts the square rod 233, causing the square rod 233 to drive the shaft 232 to slide upward and return to its position.

[0038] like Figure 3 、 Figure 5 and Figure 9 As shown, a second motor 212 is fixedly installed at the bottom of the base 1, and the output shaft of the second motor 212 is fixedly connected to a second gear 213. The side wall of the rotating disk 21 is integrally formed with a tooth surface 214, and the tooth surface 214 is engaged with the second gear 213. The bottom of the rotating disk 21 is integrally formed with a slide bar 211, and the side wall of the sliding bracket 221 is provided with a sliding hole 223. The sliding hole 223 is slidably installed on the outside of the slide bar 211. A second spring 222 is provided between the bottom of the rotating disk 21 and the top of the sliding bracket 221.

[0039] Among them, the working principle of the rotating disk 21 is: when the electric push rod 2 141 drives the tooth mold 2 231 to move downward to discharge the cast gear, the motor 212 is started, the gear 2 213 and the tooth surface 214 are engaged with each other, and the rotating disk 21 drives the sliding bracket 221 to rotate, and the sliding bracket 221 drives the tray 1 22 to rotate, and the tray 1 22 drives the shaft 232 and the tooth mold 2 231 to rotate through the square hole 225 and the square rod 233, so that the tooth mold 2 231 and the tooth mold 1 224 drive the casting gear to rotate, and in the process of the rotation of the tooth mold 1 224, the tooth mold 2 231 and the casting gear, the sand core is broken.

[0040] like Figure 5-Figure 8 As shown, the inner wall of the molding sand cavity 11 is provided with a plurality of evenly distributed movable grooves 113, and a convex tooth plate 112 is movably installed inside the molding sand cavity 11. A rotating rod 117 is integrally formed at the thin-walled end of the convex tooth plate 112, and the rotating rod 117 is rotatably installed on the side wall of the movable groove 113. A spring 116 is provided between the side wall of the convex tooth plate 112 and the movable groove 113. Two support rods 123 are integrally formed on the side wall of the sand pressing cover 122. A spiral dial 243 is movably sleeved on the outer side of the rotating shaft 241. The spiral dial 243 is located between the two support rods 123, and a plurality of evenly distributed springs 245 are provided between the inner wall of the spiral dial 243 and the side wall of the rotating shaft 241.

[0041] Among them, the working principle of the convex tooth plate 112 is: when the electric push rod 2 141 drives the tooth mold 2 231 to move downward to discharge the casting gear, the hydraulic press 132 drives the sand pressing plate 12 to move upward for a distance, and after increasing the distance between the sand cavity bottom plate 251 and the sand pressing plate 12, the motor 142 is started, and the sand pressing plate 12 drives the rotating shaft 241 to rotate, and the rotating shaft 241 drives the spiral dial 243 to revolve, thereby crushing the compacted molding sand, and cooperating with the rotation of the tooth mold 1 224, the tooth mold 2 231 and the casting gear, the molding sand inside the molding sand cavity 11 is mixed again, thereby improving the utilization rate of the molding sand. During the revolution of the spiral dial 243, the convex tooth plate 112 contacts the spiral dial 243, causing the spiral dial 243 to move toward the tooth mold 2 231, thereby improving the effect of the spiral dial 243 on crushing the molding sand.

[0042] Further references Figure 6 and Figure 8 To explain, the working principle of the support rod 123 is as follows: when the spiral dial 243 moves toward the direction of the tooth mold 231, the support rod 123 contacts the molding sand on the side wall of the spiral dial 243, so that the spiral dial 243 returns to its original position through the spring 3 245, and the direction of rotation of the tooth mold 231 is opposite to the direction of revolution of the spiral dial 243.

[0043] like Figure 3 and Figure 9As shown, a scraping ring 144 is rotatably installed inside the mold cavity 14, and the tooth mold 231 is slidably inserted into the inside of the scraping ring 144. A casting hole 237 and an exhaust hole 236 are opened inside the tooth mold 231. The casting hole 237 and the casting tube 131 are connected to each other, and the exhaust hole 236 and the exhaust pipe 135 are connected to each other. A tooth mold ring 252 is rotatably installed inside the sand cavity chassis 251, and the tooth mold ring 252 is slidably fitted on the outside of the tooth mold 1 224.

[0044] Among them, the working principle of the scraping ring 144 and the tooth mold ring 252 is: when the tooth mold 231 moves upward, the scraping ring 144 scrapes off the molding sand on the side wall of the tooth mold 231, so that the sand core is intact after the tooth mold 231 moves, thereby improving the integrity of the sand core; when the tooth mold 231 moves downward, the tooth mold 231 contacts the casting gear, and the casting gear drives the tray 1 22 to move downward, and the tooth mold ring 252 slides over the tooth mold 1 224, the casting gear and the side wall of the tooth mold 2 231 in turn, so that the discharge of the casting gear will not affect the molding sand inside the molding sand cavity 11, and there is no need to refill the molding sand inside the molding sand cavity 11.

[0045] The specific working principle and method of use of the present invention are explained in detail below: After the molding sand is manually filled into the interior of the molding sand cavity 11, the hydraulic press 132 is started, and the hydraulic press 132 drives the mold receiving cavity 14 to move downward, and the sand pressing disc 12 drives the gear ring 111 to follow the mold receiving cavity 14 to move downward. During the downward movement of the sand pressing disc 12, the motor 142 is started, so that the sand pressing disc 12 rotates, and the sand pressing disc 12 drives the spiral dial 243 to revolve. During the revolution of the spiral dial 243, the gear 3 242 and the gear ring 111 engage with each other, so that the spiral dial 243 rotates. When the molding sand cavity 11 hits the bottom of the gear ring 111, the motor 142 is turned off, and the sand pressing disc 12 continues to move downward. Move. When the sand pressing disc 12 compacts the sand inside the sand cavity 11, the hydraulic press 132 is closed, the electric push rod 2 141 is started, and the tooth mold 2 231 moves upward to the thickness of the casting gear for casting. When the cast metal liquid solidifies, the electric push rod 2 141 is started, and the tooth mold 2 231 contacts the casting gear, so that the casting gear moves out of the sand cavity 11. In the process of moving the casting gear, the tooth mold 1 224, the tooth mold 2 231 and the casting gear are reversed, and the sand pressing disc 12 drives the spiral dial 243 to rotate forward, so that the sand core is broken and remixed. When the casting gear is discharged, the tooth mold 2 231 and the tooth mold 1 224 return to their positions, and the sand pressing disc 12 squeezes the molding sand again, making the molding sand compact again to achieve continuous casting.

[0046] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are common means well known to those skilled in the art.

[0047] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An efficient gear casting molding device, comprising a base (1) and a molding sand cavity (11), characterized in that: The molding sand cavity (11) is fixedly mounted on the top of the base (1), a bracket (136) is welded on the top of the base (1), a hydraulic press (132) is fixedly mounted below the bracket (136), an output shaft of the hydraulic press (132) is fixedly connected to a press frame (134), a mold receiving cavity (14) is fixedly mounted below the press frame (134), a sand pressing disc (12) is rotatably mounted on the outside of the mold receiving cavity (14), the sand pressing disc (12) is rotatably mounted inside the molding sand cavity (11), a mounting hole 1 (145) and a mounting hole 2 (146) are opened on the top of the mold receiving cavity (14), a casting pipe (131) and an exhaust pipe (135) are fixedly mounted inside the mounting hole 1 (145) and the mounting hole 2 (146), respectively, the top of the mold receiving cavity (14) is fixedly mounted. A motor (142) is fixedly installed, the output shaft of the motor (142) is fixedly connected to a gear (143), a gear ring (121) is fixedly installed on the top of the sand pressing disc (12), the gear (143) and the gear ring (121) are meshed, a gear ring (111) is slidably installed on the outside of the molding sand cavity (11), a slide plate (115) is integrally formed on the bottom of the gear ring (111), a chute (114) is provided on the outer peripheral wall of the molding sand cavity (11), the slide plate (115) is slidably installed inside the chute (114), the gear ring (111) is located above the sand pressing disc (12), a sand cavity bottom plate (251) is movably installed inside the molding sand cavity (11), and the sand cavity bottom plate (251) is located below the sand pressing disc (12); The side wall of the sand pressing disc (12) is provided with a plurality of evenly distributed sliding holes (124), a rotating shaft (241) is movably installed inside the sliding hole (124), the rotating shaft (241) is rotatably installed on the side wall of the sand chamber bottom plate (251), a gear three (242) is fixedly installed on the top of the rotating shaft (241), the gear three (242) is meshed with the gear ring one (111), a sand pressing cover (122) is integrally formed on the bottom of the sand pressing disc (12), and the rotating shaft (241) is located inside the sand pressing cover (122); The side wall of the sand pressing cover (122) is integrally formed with two support rods (123); a spiral dial (243) is movably sleeved on the outer side of the rotating shaft (241); the spiral dial (243) is located between the two support rods (123); a telescopic cylinder (244) is slidably installed inside the spiral dial (243); the telescopic cylinder (244) is located inside the sand pressing cover (122); and a plurality of evenly distributed springs (245) are provided between the inner wall of the spiral dial (243) and the side wall of the rotating shaft (241).

2. The high-efficiency gear casting equipment according to claim 1, characterized in that: The inner wall of the molding sand cavity (11) is provided with a plurality of evenly distributed movable grooves (113), a convex tooth plate (112) is movably installed inside the molding sand cavity (11), a rotating rod (117) is integrally formed at the thin-walled end of the convex tooth plate (112), the rotating rod (117) is rotatably installed on the side wall of the movable groove (113), and a spring (116) is provided between the side wall of the convex tooth plate (112) and the movable groove (113).

3. The high-efficiency gear casting equipment according to claim 1, characterized in that: A tooth mold 2 (231) is movably installed inside the mold receiving cavity (14), and an electric push rod 2 (141) is provided between the mold receiving cavity (14) and the tooth mold 2 (231). A rotating disk (21) is rotatably installed at the bottom of the base (1), and a sliding bracket (221) is slidably installed below the rotating disk (21). A tray 1 (22) is fixedly installed above the sliding bracket (221), and a tooth mold 1 (224) is integrally formed on the top of the tray 1 (22). The tooth mold 2 (231) is located above the tooth mold 1 (224). An electric push rod 1 (133) is fixedly installed on the side wall of the base (1) support leg, and the electric push rod 1 (133) is located below the rotating disk (21).

4. The high-efficiency gear casting equipment according to claim 3, characterized in that: The tooth mold 2 (231) is internally slidably mounted with a shaft rod (232), the bottom of the shaft rod (232) is integrally formed with a square rod (233), the side wall of the tooth mold 1 (224) is provided with a square hole (225), the square rod (233) is slidably mounted inside the square hole (225), the bottom of the square rod (233) is provided with a locking groove (234), the square hole (225) is internally movably mounted with a spring locking block (235), and the spring locking block (235) is slidably mounted on the outside of the locking groove (234).

5. The high-efficiency gear casting equipment according to claim 3, characterized in that: The bottom of the base (1) is fixedly mounted with a second motor (212), the output shaft of the second motor (212) is fixedly connected with a second gear (213), the side wall of the rotating disk (21) is integrally formed with a tooth surface (214), the tooth surface (214) and the second gear (213) are meshed, the bottom of the rotating disk (21) is integrally formed with a first slide bar (211), the side wall of the sliding bracket (221) is provided with a first slide hole (223), the first slide hole (223) is slidably mounted on the outside of the first slide bar (211), and a second spring (222) is provided between the bottom of the rotating disk (21) and the top of the sliding bracket (221).

6. The high-efficiency gear casting equipment according to claim 3, characterized in that: A scraping ring (144) is rotatably installed inside the mold receiving cavity (14), and the second tooth mold (231) is slidably inserted into the interior of the scraping ring (144). A casting hole (237) and an exhaust hole (236) are opened inside the second tooth mold (231), and the casting hole (237) and the casting pipe (131) are communicated with each other, and the exhaust hole (236) and the exhaust pipe (135) are communicated with each other. A tooth mold sleeve ring (252) is rotatably installed inside the sand cavity bottom plate (251), and the tooth mold sleeve ring (252) is slidably sleeved on the outer side of the first tooth mold (224).

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