Dewaxing device for mold shell containing ceramic core

Abstract

The invention relates to the technical field of mold shell dewaxing, and discloses a dewaxing device for a mold shell containing a ceramic core, the dewaxing device comprises a heating box body, a vibration back-off mechanism is arranged in the heating box body, and a spraying buffer mechanism is arranged in the vibration back-off mechanism; the vibration back-off mechanism comprises symmetrically-arranged supporting frames and a containing plate arranged between the supporting frames, an alternating assembly is arranged between the supporting frames and the containing plate and used for enabling the two ends of the containing plate to obliquely vibrate on the supporting frames, and a driving assembly is arranged between the supporting frames and the heating box body. One end of the placing plate which is originally deviated horizontally slides towards the other end, and the placing plate at the other end gradually rises, so that the mold shell which is inversely buckled on the placing plate is inclined and alternately inclined, and when the two ends of the placing plate respectively rise and incline and a groove in the mold shell is inclined, the curvature of the liquid level is forced to change under the action of gravity; therefore, the tension direction is recombined, and the adhesive force between liquid and the tank wall is weakened.

Description

Technical Field

[0001] The present invention relates to the technical field of shell dewaxing, and particularly relates to a dewaxing device for a shell containing a ceramic core. Background Art

[0002] Dewaxing is an industrial treatment process for discharging organic additives (binder or lubricant) in a green compact by heating means. This process is a key pre-treatment process before sintering in the field of powder metallurgy. The main method is to use steam heating to melt and discharge the paraffin wax in the hardened shell. In industrial production, it is usually operated at a critical temperature of 90°C. During the process, waste gas containing non-methane total hydrocarbons and recyclable waste wax will be generated. This technology is widely used in the manufacturing fields of metal powder products, ceramic parts, etc., and requires a supporting waste gas collection and activated carbon treatment system.

[0003] The shell dewaxing box disclosed in Chinese Patent CN210676847U integrates the box door and the transport plate, and uses the motor and chain drive assembly of the driving device to control the forward or backward movement of the box door, so that the transport plate loaded with the shell can move forward or backward automatically, reducing manual operation, saving time and effort, and reducing costs. A recovery mechanism for recovering the wax liquid at the bottom of the box body is arranged on the outer side of the box body to recycle the waste materials and greatly reduce the production cost of the enterprise.

[0004] When the above-mentioned shell dewaxing device is in use, the molten wax liquid has significant thermal adhesiveness, can closely adhere to the surface of the object and penetrate into microscopic gaps, and most of the inner cavities of the casting molds are irregular, with many grooves and dead corners. The melted wax liquid will be affected by the surface tension in the grooves. Under the combined action of the surface tension and contact angle hysteresis, a retention area is easily formed at the groove corners. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a dewaxing device for a shell containing a ceramic core, which has the advantages of accelerating the shedding of the wax liquid in the inner cavity of the shell, etc., and solves the problem that the wax liquid cannot flow out due to tension in the groove.

[0006] The present invention provides the following technical solution: A dewaxing device for a mold shell containing a ceramic core, comprising a heating box body, wherein a vibration and reverse buckling mechanism is arranged inside the heating box body, and a spraying and buffering mechanism is arranged inside the vibration and reverse buckling mechanism. The vibration and reverse buckling mechanism includes symmetrically arranged support frames and a placement plate arranged between the support frames. An alternating component is arranged between the support frames and the placement plate for making the two ends of the placement plate tilt and vibrate respectively on the support frames. A driving component is arranged between the support frames and the heating box body for driving the buckled mold shell to slide in the heating box body. The spraying and buffering mechanism includes a sliding frame and buffer blocks symmetrically arranged at both ends of the support frames. Both ends of the support frames slide along the inner wall of the sliding frame, and a buffering component is arranged between the support frames and the buffer blocks for buffering and protecting the mold shell falling in reverse. A spraying component is arranged between the sliding frame and the heating box body for spraying the inner cavity of the lifted mold shell.

[0007] As a preferred scheme of the dewaxing device for the mold shell containing a ceramic core of the present invention, the alternating component includes elastic sliding columns, the elastic sliding columns are symmetrically arranged at both ends of the placement plate, limit sliding grooves are opened at both ends of the two support frames, limit sliding columns are arranged at both ends of the placement plate, moving grooves are opened at both ends of the placement plate, and the limit sliding columns are slidably connected in the moving grooves.

[0008] As a preferred scheme of the dewaxing device for the mold shell containing a ceramic core of the present invention, arc-shaped inclined blocks are arranged in a staggered manner at both ends of the placement plate, lower guiding blocks are symmetrically arranged at the bottom end of the sliding frame, upper guiding blocks are symmetrically arranged at the top end of the sliding frame, and the bottom ends of the two lower guiding blocks are fixedly connected to the inner wall of the heating box body.

[0009] As a preferred scheme of the dewaxing device for the mold shell containing a ceramic core of the present invention, a support frame is fixedly connected to one side of the arc-shaped inclined block, a collection box is fixedly connected to the bottom end of the support frame, the upper surface of the collection box is fixedly connected to the bottom end of the sliding frame, and the collection box is arranged at the bottom end of the heating box body.

[0010] As a preferred scheme of the dewaxing device for the mold shell containing a ceramic core of the present invention, the driving component includes sliding inclined blocks, the sliding inclined blocks are slidably connected to both ends of the two support frames, lifting plates are arranged on the lower surfaces of the sliding inclined blocks, a lifting frame is fixedly connected to one end of the lifting plate, and limit abutting columns are fixedly connected to one side of the top end of the sliding frame.

[0011] As a preferred embodiment of the dewaxing device for the ceramic core-containing mold shell of the present invention, one end of the lifting frame is screwed with a threaded rod, the other end of the lifting frame is slidably connected with a limiting slide rod, the bottom end of the threaded rod is fixedly connected with a motor, the motor is fixedly connected to the inner wall of the heating box body, both ends of the limiting slide rod are fixedly connected to the heating box body, both ends of the placing plate are fixedly connected with cylinders, and the output ends of the cylinders are fixedly connected with clamping plates.

[0012] As a preferred embodiment of the dewaxing device for the ceramic core-containing mold shell of the present invention, the buffer assembly includes a limiting slide plate, the limiting slide plate is symmetrically and slidably connected to both ends of the support frame, one end of the limiting slide plate is fixedly connected to the upper surface of the sliding inclined block, a limiting card slot is opened at the other end of the limiting slide plate, and a sliding column rod is arranged at one end of the limiting slide plate.

[0013] As a preferred embodiment of the dewaxing device for the ceramic core-containing mold shell of the present invention, both of the sliding column rods are torsion spring-connected to both ends of the support frame, one end of the sliding column rod is slidably connected in the limiting card slot, a lower rack is fixedly connected to one side of each of the limiting slide plates, a driven gear is meshed with one side of the lower rack, the driven gear is rotatably connected in the support frame, an upper rack is meshed above the driven gear, one side of the upper rack is fixedly connected to a buffer block, and the buffer block is slidably connected in the support frame.

[0014] As a preferred embodiment of the dewaxing device for the ceramic core-containing mold shell of the present invention, the spraying assembly includes driving racks, both of the driving racks are fixedly connected to one side of the support frame, an installation frame is fixedly connected to one side of the sliding frame, a loading bucket is rotatably connected between the two installation frames, spray pipes are arranged in a row on one side of the loading bucket, driving gears are fixedly connected to both ends of the loading bucket, a damper is fixedly connected to the bottom end of the sliding frame, and a moving plate is fixedly connected to the top end of the damper.

[0015] The technical solution provided by the present invention has the following beneficial effects compared with the known prior art: 1. By making one end of the originally biased placing plate slide horizontally towards the other end, and the other end of the placing plate starts to gradually rise, the mold shell buckled on the placing plate is tilted, and the alternating tilting operation makes the two ends of the placing plate rise and tilt respectively. When the groove in the mold shell is tilted, the gravity will force the liquid surface curvature to change, thereby reorganizing the tension direction and weakening the adhesion between the liquid and the groove wall.

[0016] 2. When driving the placement plate in the middle to fall along the sliding rack through the support frames on both sides, the limit sliding columns on both sides of the placement plate will pass through from one side of the arc-shaped inclined block on the support frame. When the placement plate falls onto the moving plate, the wax liquid in the mold shell will fall in an inverted manner, accelerating the speed of the wax liquid falling off from the inner cavity of the mold shell. The gravity can be utilized to make the wax liquid flow out of the inner cavity of the mold shell faster, reducing the residue amount of the wax mold in the mold shell.

[0017] 3. When driving the limit sliding plate at one end to slide along the inner wall of the support frame through the sliding inclined block, the lower rack on one side of the limit sliding plate drives the buffer block to slide out of the support frame through the engaged driven gear, making the buffer block contact with the inner wall of the sliding rack, buffering the support frame and the placement plate that are about to fall, and taking appropriate buffering for the mold shell that falls in an inverted manner. This can avoid the damage caused by impact during the falling process of the mold shell and ensure that its shape and function are not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is the three-dimensional overall structure schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the heating box body of the present invention; Figure 3 is the structural schematic diagram of the vibration and inverted mechanism of the present invention; Figure 4 is of the present invention Figure 3 structural schematic diagram of the enlarged part A; Figure 5 is the structural schematic diagram of the support frame of the present invention; Figure 6 is the structural schematic diagram of the support frame of the present invention; Figure 7 is of the present invention Figure 6 structural schematic diagram of the enlarged part B; Figure 8 is the structural schematic diagram of the limit sliding plate of the present invention; Figure 9 is of the present invention Figure 8 structural schematic diagram of the enlarged part C; Figure 10 is the structural schematic diagram of the loading bucket of the present invention.

[0020] In the figure: 100, heating box body; 200, vibration reverse buckling mechanism; 201, support frame; 202, placing plate; 203, elastic sliding column; 204, limiting sliding groove; 205, limiting sliding column; 206, moving groove; 207, arc-shaped inclined block; 208, lower guiding block; 209, upper guiding block; 210, support frame; 211, collection box; 212, sliding inclined block; 213, lifting plate; 214, lifting frame; 215, limiting abutting column; 216, threaded rod; 217, limiting sliding rod; 218, motor; 219, cylinder; 220, clamping plate; 300, spraying buffer mechanism; 301, sliding frame; 302, buffer block; 303, limiting sliding plate; 304, limiting clamping groove; 305, sliding column rod; 306, lower rack; 307, driven gear; 308, upper rack; 309, driving rack; 310, mounting frame; 311, loading bucket; 312, spray pipe; 313, driving gear; 314, damper; 315, moving plate. Detailed implementation manners

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] The present invention will be further described below with reference to the embodiments.

[0023] Embodiment 1

[0024] Referring to Figure 1 、 Figure 2 、 Figure 5 and Figure 6 , which is the first embodiment of the present invention, provides a dewaxing device for a ceramic core-containing mold shell, including a heating box body 100, a vibration reverse buckling mechanism 200 is arranged in the heating box body 100, and a spraying buffer mechanism 300 is arranged in the vibration reverse buckling mechanism 200; The vibration reverse buckling mechanism 200 includes symmetrically arranged support frames 201 and a placing plate 202 arranged between the support frames 201. An alternating component is arranged between the support frames 201 and the placing plate 202 for making the two ends of the placing plate 202 tilt and vibrate respectively on the support frames 201. A driving component is arranged between the support frames 201 and the heating box body 100 for driving the buckled mold shell to slide in the heating box body 100; The spraying buffer mechanism 300 includes a sliding frame 301 provided and buffer blocks 302 symmetrically arranged at both ends of the support frame 201. Both ends of the support frame 201 slide along the inner wall of the sliding frame 301. A buffer assembly is provided between the support frame 201 and the buffer blocks 302 for buffering and protecting the mold shell that falls in an inverted manner. A spraying assembly is provided between the sliding frame 301 and the heating box 100 for spraying the inner cavity of the lifted mold shell.

[0025] Embodiment 2

[0026] Referring to Figures 1-7 , which is the second embodiment of the present invention, a dewaxing device for a mold shell containing a ceramic core is provided. The alternating assembly includes elastic sliding columns 203, and the elastic sliding columns 203 are symmetrically arranged at both ends of the placement plate 202. Limiting sliding grooves 204 are opened at both ends of the two support frames 201. Limiting sliding columns 205 are provided at both ends of the placement plate 202. Moving grooves 206 are opened at both ends of the placement plate 202. The limiting sliding columns 205 are slidably connected in the moving grooves 206. The elastic sliding column 203 is composed of a sliding column and a sleeve, and an elastic element is arranged in the sleeve, which can push the sliding column in the sleeve to abut against the inner wall of the limiting sliding groove 204. The limiting sliding groove 204 is composed of a long concave arc groove, a short convex arc groove and a straight groove connected. There is a drop at the intersection of the straight arc and the long concave arc groove. The long concave arc groove is opened deeper than the straight groove and the short convex arc groove. The intersection of the long concave arc groove and the short convex arc groove is connected by an inclined surface.

[0027] Arc-shaped inclined blocks 207 are arranged in a staggered manner at both ends of the placement plate 202. Lower guiding blocks 208 are symmetrically arranged at the bottom end of the sliding frame 301. Upper guiding blocks 209 are symmetrically arranged at the top end of the sliding frame 301. The bottom ends of the two lower guiding blocks 208 are fixedly connected to the inner wall of the heating box 100. The inclination directions of the guiding grooves in the lower guiding blocks 208 and the upper guiding blocks 209 are opposite, which can change the position of the limiting sliding columns 205 sliding therein. The arc-shaped inclined blocks 207 are arranged in a staggered manner on the support frame 21, and there is only one side of the arc-shaped inclined blocks 207 on the support frame 210 at the same horizontal height.

[0028] One side of the arc-shaped inclined block 207 is fixedly connected to a support frame 210. The bottom end of the support frame 210 is fixedly connected to a collection box 211. The upper surface of the collection box 211 is fixedly connected to the bottom end of the sliding frame 301. The collection box 211 is arranged at the bottom end of the heating box 100.

[0029] The driving component includes sliding inclined blocks 212. The two ends of the two support frames 201 are both slidably connected with sliding inclined blocks 212. Lifting plates 213 are arranged on the lower surfaces of the sliding inclined blocks 212. One end of each lifting plate 213 is fixedly connected with a lifting frame 214. One side of the top end of each sliding frame 301 is fixedly connected with a limiting abutting column 215. There are four sliding frames 301, which are respectively fixedly connected to the four corners of the collection box 211. One end of the sliding inclined block 212 is provided with a folding elastic piece. The lifting frames 214 are symmetrically arranged at the two ends of the support frame 201. Both ends of the lifting frame 214 are fixedly connected with lifting plates 213.

[0030] One end of the lifting frame 214 is screwed with a threaded rod 216, and the other end of the lifting frame 214 is slidably connected with a limiting slide rod 217. The bottom end of the threaded rod 216 is fixedly connected with a motor 218, and the motor 218 is fixedly connected to the inner wall of the heating box body 100. Both ends of the limiting slide rod 217 are fixedly connected to the heating box body 100. Both ends of the placing plate 202 are fixedly connected with cylinders 219, and the output ends of the cylinders 219 are fixedly connected with clamping plates 220.

[0031] Specifically, initially, the two support frames 201 on both sides drive the placing plate 202 in the middle in a horizontal state to be located at the bottom end of the sliding frame 301. The elastic sliding column 203 at one end of the placing plate 202 is located at the intersection of the long concave arc groove and the straight groove, and the elastic sliding column 203 at the other end of the placing plate 202 is located at the intersection of the straight groove and the short convex arc groove. At this time, the placing plate 202 is biased towards one end of the support frame 201. (Biased means that the placing plate 202 moves towards one end of the support frame 201, so that most of the placing plate 202 as a whole occupies this end biased towards the support frame 201, while the other end of the placing plate 202 will be reduced), as Figure 6 shown, the limiting sliding column 205 is located at one end of the moving groove 206. Both ends of the limiting sliding column 205 are horizontally arranged on the center line of the placing plate 202. The limiting sliding column 205 is located at the bottom end of the guiding groove of the lower guiding block 208. The sliding inclined blocks 212 at both ends of the support frame 201 are both in the extended state. The lifting plates 213 at both ends of the lifting frame 214 are in contact with the lower surfaces of the sliding inclined blocks 212, and lift it from both ends of the support frame 201. Both sides of the lifting frames 214 are located at the bottom ends of the threaded rod 216 and the limiting slide rod 217.

[0032] The output end of the motor 218 drives the threaded rod 216 to rotate on the heating box body 100, driving the lifting frame 214 screwed on the threaded rod 216 to slide upward along the limiting slide rod 217 at the other end. One end of the lifting plate 213 abuts against the lower surface of the sliding inclined block 212, and the support frame 201 and the placing plate 202 in the middle are lifted by the two lifting frames 214 and slide upward along the sliding frame 301. The placing plate 202 between the two support frames 201 starts to rise while maintaining the initial state, and the limiting slide posts 205 at both ends of the placing plate 202 slide upward out of the lower guide block 208.

[0033] When the limiting slide post 205 at one end of the placing plate 202 biased towards one of the support frames 201 rises, the limiting slide post 205 at this end starts to abut against the arc-shaped inclined block 207 on the support frame 210, while the limiting slide post 205 at the other end does not encounter the arc-shaped inclined block 207. When the limiting slide post 205 (the limiting slide post 205 at the end encountering the arc-shaped inclined block 207) slides upward along the arc surface of the arc-shaped inclined block 207, the limiting slide post 205 will push the placing plate 202 towards the end that does not encounter the arc-shaped inclined block 207 (move in the opposite direction to the initial bias). The elastic slide posts 203 on both sides of the placing plate 202 (at the end not encountering the arc-shaped inclined block 207) will move from the intersection of the long concave arc groove and the straight groove into the long concave arc groove, and the elastic slide posts 203 on both sides of the other end of the placing plate 202 (at the end where the limiting slide post 205 abuts and slides against the arc-shaped inclined block 207) will move from the intersection of the straight groove and the short convex arc groove into the straight groove. When the elastic slide posts 203 on both sides of the placing plate 202 (at the end not encountering the arc-shaped inclined block 207) slide upward along the long concave arc groove, this end of the placing plate 202 will start to rise, and the elastic slide posts 203 on both sides of the other end will slide along the straight groove towards the intersection of the long concave arc groove and the straight groove, causing the placing plate 202 to tilt in the middle of the support frame 201, making the originally biased end of the placing plate 202 slide horizontally towards the other end, while the other end of the placing plate 202 starts to gradually rise, causing the mold shell inverted on the placing plate 202 to tilt. When the groove in the mold shell tilts, the gravitational force will force the liquid surface curvature to change, thereby reorganizing the direction of the tension and weakening the adhesion between the liquid and the groove wall.

[0034] (One end that has not encountered the arc-surface inclined block 207) When the elastic sliding posts 203 on both sides of the placement plate 202 move along the long concave arc groove to the intersection of the short convex arc groove and the long concave arc groove, the elastic sliding posts 203 will slide down along the short convex arc groove under the action of the placement plate 202's own weight, (one end that has not encountered the arc-surface inclined block 207) and the elastic sliding posts 203 on both sides of the other end rotate at the intersection of the long concave arc groove and the straight line groove, (one end that has not encountered the arc-surface inclined block 207) After the elastic sliding post 203 slides from the short convex arc groove into the straight line groove, the elastic sliding post 203 falls and hits the straight line groove The contact generates vibration, which accelerates the shedding of the wax liquid in the mold shell, and the originally tilted placement plate 202 returns to a horizontal state again, but at this time the direction of the placement plate 202 on the support frame 201 is opposite to the initial direction. As the lifting frame 214 lifts the support frame 201 and the placement plate 202 to rise, (the opposite end of the initial deviation) this end will gradually contact the curved inclined block 207 on the support frame 210 (the end of the initial deviation), and the other end will not encounter the curved inclined block 207. In this reciprocating alternating tilting operation, the two ends of the placement plate 202 are respectively raised and tilted.

[0035] When the lifting frame 214 lifts the support frame 201 and the placement plate 202 through the last staggered arc inclined block 207, the placement plate 202 between the two support frames 201 is in the initial deflection direction, and the limit slides 205 at both ends of the placement plate 202 will gradually enter the upper guide blocks 209 on both sides as they rise, and the limit slides 205 will move along the guide grooves in the upper guide blocks 209 toward one end of the moving groove 206, so that the limit slide 205 moves to one side of the arc inclined block 207 and is not aligned with the arc inclined block 207 below, so that the limit slide 205 originally on the center line slides along the moving groove 206 to the other end, so that the limit slides 205 at both ends are not on the center line. At this time, the limit slide 205 can pass from one side of the arc inclined block 207, and when the lifting plate 213 lifts the sliding inclined block 212 and contacts the upper limit stop column 215, the output end of the motor 218 stops rotating.

[0036] Example 3

[0037] Reference Figures 8-10 , which is the third embodiment of the present invention, provides a dewaxing device containing a ceramic core mold shell, the buffer assembly includes a limiting slide 303, the limiting slide 303 is symmetrically slidably connected to the two ends of the support frame 201, one end of the limiting slide 303 is fixedly connected to the upper surface of the sliding inclined block 212, the other end of the limiting slide 303 is provided with a limiting slot 304, one end of the limiting slide 303 is provided with a sliding column rod 305, and a folding spring sheet provided at one end of the sliding inclined block 212 is on the lower surface of the limiting slide 303, and the overall shape of the limiting slot 304 is heart-shaped, as shown in FIG. Figure 9, the limiting card slot 304 is composed of an inclined slot with one long and one short end at the bottom and an M-shaped slot at the top. An inverted acute angle is arranged in the M-shaped slot, and the inverted acute angle is composed of a short inclined plane and a long inclined plane.

[0038] Both of the two sliding pillar rods 305 are connected to the two ends of the support frame 201 by torsion springs. One end of the sliding pillar rod 305 is slidably connected in the limiting card slot 304. Lower racks 306 are fixedly connected to one side of the limiting sliding plates 303. A driven gear 307 is meshed with one side of the lower rack 306. The driven gear 307 is rotatably connected in the support frame 201. An upper rack 308 is meshed above the driven gear 307. One side of the upper rack 308 is fixedly connected to the buffer block 302. The buffer block 302 is slidably connected in the support frame 201. A limiting column is arranged at one end of the sliding pillar rod 305. When the limiting column is located at the intersection point of the long inclined slot and the short inclined slot, one end of the long inclined slot contains the intersection point, and the whole of the limiting column is still located at one end of the long inclined slot.

[0039] The spraying assembly includes driving racks 309. Both of the two driving racks 309 are fixedly connected to one side of the support frame 201. An installation frame 310 is fixedly connected to one side of the sliding frame 301. A charging barrel 311 is rotatably connected between the two installation frames 310. Spray pipes 312 are arranged in a row on one side of the charging barrel 311. Driving gears 313 are fixedly connected to both ends of the charging barrel 311. A damper 314 is fixedly connected to the bottom end of the sliding frame 301. A moving plate 315 is fixedly connected to the top end of the damper 314. The driving rack 309 is located between two vertical spray pipes 312, and the position where the driving rack 309 is arranged is biased below the formwork.

[0040] Specifically, initially, when the driving rack 309 on one side of the support frame 201 has not contacted the driving gear 313 yet, a row of spray pipes 312 on the charging barrel 311 are all in a hanging state. The vertically arranged spray pipes 312 are received on both sides of the sliding frame 301 and will not block the placement plate 202 in the middle of the support frame 201. One end of the sliding pillar rod 305 is located at the intersection point of the long inclined slot and the short inclined slot, and the buffer blocks 302 at both ends of the support frame 201 are all in a retracted state and do not contact the inner wall of the limiting sliding plate 303.

[0041] When the motor 218 rotates the threaded rod 216 to drive the lifting frame 214 to lift the support frame 201 and the placement plate 202 through the last arc-surface inclined block 207, the support frame 201 and the placement plate 202 drive the mold shell to the middle part of the vertical nozzles 312 on both sides, and the driving racks 309 on both sides of the support frame 201 will contact the driving gears 313 on both sides. As the support frame 201 drives the driving rack 309 on one side to continue to rise, it also drives the meshing driving gears 313 on both sides to rotate, and the driving gears 313 on both sides will drive the nozzles 312 arranged on the loading barrel 311. It rotates into the sliding frame 301. At this time, the support frame 201 and the placement plate 202 have passed through the nozzles 312 on both sides. The loading barrel 311 drives the arranged nozzles 312 to rotate from a hanging state to an inclined state. When the sliding inclined blocks 212 at both ends of the support frame 201 contact the upper limit column 215, the output end of the motor 218 stops rotating. The inclined nozzle 312 under the mold shell can spray the catalyst on the inner cavity of the mold shell to accelerate the shedding of the wax liquid in the mold shell. At this time, the driving gear 313 and the driving rack 309 are still in a meshing state, and can also allow the placement plate 202 to rise another distance along the sliding frame 301.

[0042] After the nozzle 312 has finished spraying the catalyst on the inner cavity of the inverted mold shell, the motor 218 rotates the threaded rod 216 to drive the lifting frame 214 to rise again, so that the sliding inclined blocks 212 at both ends of the limiting slide 303 collide with the limiting pillar 215. The limiting pillar 215 will push the sliding inclined blocks 212 at both ends to slide into the support frame 201. The sliding inclined blocks 212 slide along the lifting plate 213 on the lower surface into the support frame 201, and disengage from the lifting plate 213 on one side, so that the support frame 201 originally supported by the lifting frame 214 moves downward after passing through the lifting plate 213.

[0043] When the sliding inclined block 212 drives the limiting slide plate 303 at one end to slide into the support frame 201, one end of the sliding column rod 305 of the torsion spring is slidably connected to the bottom end of the long inclined groove. As the limiting slide plate 303 slides toward one end of the sliding column rod 305, one end of the sliding column rod 305 will slide along the long inclined groove into the M-shaped groove. At this time, it drives the sliding column rod 305 to rotate in the support frame 201, so that the torsion spring at one end of the sliding column rod 305 is stressed. Under the reaction force, the deformed torsion spring will drive one end of the sliding column rod 305 to enter the M-shaped groove and come into contact with the short inclined surface in the M-shaped groove. At this time, the sliding inclined blocks 212 at both ends of the support frame 201 retract and no longer contact the lifting plate 213. The support frame 201 no longer follows the lifting frame 214 to move upward, so that the support frame 201 drives the placement plate 202 to start sliding downward along the surrounding sliding frame 301.

[0044] Meanwhile, when the sliding inclined block 212 drives the limiting sliding plate 303 at one end to slide along the inner wall of the support frame 201, the lower rack 306 on one side of the limiting sliding plate 303 drives the buffer block 302 to slide out of the support frame 201 through the meshing driven gear 307, so that the buffer block 302 contacts the inner wall of the sliding frame 301, buffers the support frame 201 and the placing plate 202 that are about to fall, and compresses the folding elastic sheet at one end of the sliding inclined block 212. When one end of the sliding column rod 305 contacts the short inclined plane in the M-shaped groove, the compressed folding elastic sheet will drive the limiting sliding plate 303 and the sliding inclined block 212 to slide out of the support frame 201, so that one end of the sliding column rod 305 slides along the short inclined plane and is stuck in the groove in the M-shaped groove, so that the positions of the limiting sliding plate 303 and the sliding inclined block 212 are limited again. At this time, the sliding inclined blocks 212 at both ends of the support frame 201 have extended a part and can contact the subsequent lifting plate 213.

[0045] When the support frames 201 on both sides drive the placing plate 202 in the middle to fall along the sliding frame 301, the driving rack 309 on the support frame 201 drives the meshing driving gear 313 to rotate, so that the spray pipes 312 arranged on the charging bucket 311 expand and reset to both sides. The limiting sliding columns 205 on both sides of the placing plate 202 will pass through one side of the arc-shaped inclined block 207 on the support frame 210. When the placing plate 202 falls on the moving plate 315, the damper 314 under the moving plate 315 can buffer the mold shell on the placing plate 202 again, so that the wax liquid in the mold shell falls and is inverted, accelerating the speed of the wax liquid falling off from the inner cavity of the mold shell. The wax liquid will enter the lower collection box 211 through the opening on the placing plate 202 for collection, and the limiting sliding columns 205 at both ends of the placing plate 202 will slide along the guide groove in the lower guide block 208, so that the limiting sliding columns 205 slide along the moving groove 206 to the horizontal center line of the placing plate 202, and at this time they are aligned with the arc-shaped inclined block 207 staggered above.

[0046] By reversing the rotation of the motor 218, the threaded rod 216 drives the lifting frame 214 to slide downward along the limiting slide rod 217. When the lifting plates 213 at both ends of the lifting frame 214 descend and contact the inclined surfaces on the sliding inclined blocks 212, the lifting plates 213 will push the sliding inclined blocks 212 to slide inward into the support frame 201 again. At this time, the sliding column rod 305 located in the groove of the M-shaped groove will slide inward into the support frame 201 again along with the limiting slide plate 303. One end of the sliding column rod 305 will contact the long inclined surface, and one end of the sliding column rod 305 will slide along the long inclined surface. Under the action of the torsion spring, one end of the sliding column rod 305 slides out from the other end of the M-shaped groove and enters the short inclined groove. At this time, the lifting plate 213 has passed through the sliding inclined block 212, and the compressed folding elastic piece will, under the reaction force, push the sliding inclined block 212 and the upper limiting slide plate 303 to slide out and reset from both ends of the support frame 201. The steps are opposite, so that one end of the sliding column rod 305 moves to the intersection of the long inclined groove and the short inclined groove, and the buffer block 302 retracts into the support frame 201 and does not contact the sliding frame 301.

[0047] Embodiment 4

[0048] Referring to Figures 1-10 , for the fourth embodiment of the present invention, a dewaxing device for a mold shell containing a ceramic core is provided, including the following steps: Initially, the support frames 201 on both sides drive the horizontally placed plate 202 in the middle to be located at the bottom end of the sliding frame 301. The elastic sliding columns 203 at one end of the placing plate 202 are located at the intersection of the long concave arc groove and the straight groove, and the elastic sliding columns 203 at the other end of the placing plate 202 are located at the intersection of the straight groove and the short convex arc groove. The placing plate 202 is biased towards one end of the support frame 201 at this time. (Biased means that the placing plate 202 moves towards one end of the support frame 201, so that most of the placing plate 202 as a whole occupies this end of the support frame 201 that it is biased towards, while the other end of the placing plate 202 will be reduced) As Figure 6 shown, the limiting sliding columns 205 are located at one end of the moving groove 206. The two limiting sliding columns 205 are both horizontally arranged on the center line of the placing plate 202. The limiting sliding columns 205 are located at the bottom end of the guiding groove of the lower guiding block 208. The sliding inclined blocks 212 at both ends of the support frame 201 are both in the extended state. The lifting plates 213 at both ends of the lifting frame 214 are in contact with the lower surfaces of the sliding inclined blocks 212, and lift it from both ends of the support frame 201. The two lifting frames 214 on both sides are both located at the bottom ends of the threaded rod 216 and the limiting slide rod 217.

[0049] The output end of the motor 218 drives the threaded rod 216 to rotate on the heating box body 100, driving the lifting frame 214 screwed on the threaded rod 216 to slide upward along the limiting slide rod 217 at the other end. One end of the lifting plate 213 abuts against the lower surface of the sliding inclined block 212, and the support frame 201 and the placing plate 202 in the middle are lifted along the sliding frame 301 by the lifting frames 214 on both sides. The placing plate 202 between the support frames 201 on both sides starts to rise while maintaining the initial state, and the limiting slide posts 205 at both ends of the placing plate 202 slide upward out of the lower guide block 208.

[0050] When the limiting slide post 205 at one end of the placing plate 202 that is biased towards one of the support frames 201 rises, the limiting slide post 205 at this end starts to abut against the arc-shaped inclined block 207 on the support frame 210. At this time, the limiting slide post 205 at the other end does not encounter the arc-shaped inclined block 207. When the limiting slide post 205 (the limiting slide post 205 at the end that encounters the arc-shaped inclined block 207) slides upward along the arc surface of the arc-shaped inclined block 207, the limiting slide post 205 will push the placing plate 202 towards the end that does not encounter the arc-shaped inclined block 207 (move in the opposite direction to the initial bias). The elastic slide posts 203 on both sides of the placing plate 202 (at the end that does not encounter the arc-shaped inclined block 207) will move from the intersection of the long concave arc groove and the straight groove into the long concave arc groove. The elastic slide posts 203 on both sides of the placing plate 202 at the other end (at the end where the limiting slide post 205 abuts and slides against the arc-shaped inclined block 207) will move from the intersection of the straight groove and the short convex arc groove into the straight groove. When the elastic slide posts 203 on both sides of the placing plate 202 (at the end that does not encounter the arc-shaped inclined block 207) slide upward along the long concave arc groove, this end of the placing plate 202 will start to rise. The elastic slide posts 203 on both sides at the other end will slide along the straight groove towards the intersection of the long concave arc groove and the straight groove, causing the placing plate 202 to tilt in the middle of the support frame 201, making the end of the placing plate 202 that was originally biased slide horizontally towards the other end, and the other end of the placing plate 202 starts to gradually rise, causing the mold shell buckled on the placing plate 202 to tilt. When the groove in the mold shell tilts, the gravity will force the liquid surface curvature to change, thereby reorganizing the tension direction and weakening the adhesion between the liquid and the groove wall.

[0051] (One end that has not encountered the arc-surface inclined block 207) When the elastic sliding posts 203 on both sides of the placement plate 202 move along the long concave arc groove to the intersection of the short convex arc groove and the long concave arc groove, the elastic sliding posts 203 will slide down along the short convex arc groove under the action of the placement plate 202's own weight, (one end that has not encountered the arc-surface inclined block 207) and the elastic sliding posts 203 on both sides of the other end rotate at the intersection of the long concave arc groove and the straight line groove, (one end that has not encountered the arc-surface inclined block 207) After the elastic sliding post 203 slides from the short convex arc groove into the straight line groove, the elastic sliding post 203 falls and hits the straight line groove The contact generates vibration, which accelerates the shedding of the wax liquid in the mold shell, and the originally tilted placement plate 202 returns to a horizontal state again, but at this time the direction of the placement plate 202 on the support frame 201 is opposite to the initial direction. As the lifting frame 214 lifts the support frame 201 and the placement plate 202 to rise, (the opposite end of the initial deviation) this end will gradually contact the curved inclined block 207 on the support frame 210 (the end of the initial deviation), and the other end will not encounter the curved inclined block 207. In this reciprocating alternating tilting operation, the two ends of the placement plate 202 are respectively raised and tilted.

[0052] When the lifting frame 214 lifts the support frame 201 and the placement plate 202 through the last staggered arc inclined block 207, the placement plate 202 between the two support frames 201 is in the initial deflection direction, and the limit slides 205 at both ends of the placement plate 202 will gradually enter the upper guide blocks 209 on both sides as they rise, and the limit slides 205 will move along the guide grooves in the upper guide blocks 209 toward one end of the moving groove 206, so that the limit slide 205 moves to one side of the arc inclined block 207 and is not aligned with the arc inclined block 207 below, so that the limit slide 205 originally on the center line slides along the moving groove 206 to the other end, so that the limit slides 205 at both ends are not on the center line. At this time, the limit slide 205 can pass from one side of the arc inclined block 207, and when the lifting plate 213 lifts the sliding inclined block 212 and contacts the upper limit stop column 215, the output end of the motor 218 stops rotating.

[0053] Initially, when the driving rack 309 on one side of the support frame 201 has not yet contacted the driving gear 313, the row of nozzles 312 on the loading barrel 311 are all in a hanging state, and the vertically arranged nozzles 312 are stored on both sides of the sliding frame 301, and will not cause resistance to the placement plate 202 in the middle of the support frame 201. One end of the sliding column rod 305 is located at the intersection of the long inclined groove and the short inclined groove. The buffer blocks 302 at both ends of the support frame 201 are in a retracted state and do not contact the inner wall of the limiting slide 303.

[0054] When the threaded rod 216 is rotated by the motor 218 to drive the lifting frame 214 to lift the support frame 201 and the placement plate 202 through the last arc-shaped inclined block 207, when the support frame 201 and the placement plate 202 drive the mold shell to reach the middle part between the vertically arranged spray pipes 312 on both sides, the driving racks 309 on both sides of the support frame 201 will contact the driving gears 313 on both sides. As the support frame 201 drives one side of the driving rack 309 to continue rising, it simultaneously drives the meshing driving gears 313 on both sides to rotate. The driving gears 313 on both sides will drive the spray pipes 312 arranged on the charging bucket 311 to rotate into the sliding frame 301. At this time, the support frame 201 and the placement plate 202 have passed through the spray pipes 312 on both sides, and the charging bucket 311 drives the arranged spray pipes 312 to rotate from the vertical state to the inclined state. When the sliding inclined blocks 212 at both ends of the support frame 201 contact the upper limit abutting posts 215, the output end of the motor 218 stops rotating. The inclined spray pipes 312 below the mold shell can spray the catalyst into the inner cavity of the mold shell, accelerating the shedding of the wax liquid in the mold shell. At this time, the driving gear 313 and the driving rack 309 are still in the meshing state, and it is still allowed for the placement plate 202 to rise another section along the sliding frame 301.

[0055] After the spray pipes 312 spray the catalyst into the inner cavity of the inverted mold shell, the threaded rod 216 is rotated by the motor 218 to drive the lifting frame 214 to rise again, so that the sliding inclined blocks 212 at both ends of the limit sliding plate 303 contact the limit abutting posts 215. The limit abutting posts 215 will push the sliding inclined blocks 212 at both ends to slide into the support frame 201. The sliding inclined blocks 212 slide into the support frame 201 along the lifting plate 213 on the lower surface, and are separated from the contact with one side of the lifting plate 213, causing the support frame 201 originally lifted by the lifting frame 214 to move downward after passing through the lifting plate 213.

[0056] When the sliding inclined block 212 drives one end of the limit sliding plate 303 to slide into the support frame 201, since one end of the sliding column rod 305 of the torsion spring is slidably connected to the bottom end of the long inclined groove, as the limit sliding plate 303 slides towards one end of the sliding column rod 305, one end of the sliding column rod 305 will slide along the long inclined groove into the M-shaped groove. At this time, it drives the sliding column rod 305 to rotate in the support frame 201, causing the torsion spring at one end of the sliding column rod 305 to be stressed. Under the reaction force of the deformed torsion spring, it will drive one end of the sliding column rod 305 to enter the M-shaped groove and contact the short inclined surface in the M-shaped groove. At this time, the sliding inclined blocks 212 at both ends of the support frame 201 retract and no longer contact the lifting plate 213, and the support frame 201 no longer moves upward following the lifting frame 214, causing the support frame 201 to drive the placement plate 202 to start sliding downward along the surrounding sliding frame 301.

[0057] Meanwhile, when the sliding inclined block 212 drives the limit sliding plate 303 at one end to slide along the inner wall of the support frame 201, the lower rack 306 on one side of the limit sliding plate 303 drives the buffer block 302 to slide out of the support frame 201 through the meshing driven gear 307, so that the buffer block 302 contacts the inner wall of the sliding frame 301, cushions the support frame 201 and the placing plate 202 that are about to fall, and compresses the folding elastic sheet at one end of the sliding inclined block 212. When one end of the sliding column rod 305 contacts the short inclined surface in the M-shaped groove, the compressed folding elastic sheet will drive the limit sliding plate 303 and the sliding inclined block 212 to slide out of the support frame 201, so that one end of the sliding column rod 305 slides along the short inclined surface and is stuck in the groove in the M-shaped groove, so that the positions of the limit sliding plate 303 and the sliding inclined block 212 are limited again. At this time, the sliding inclined blocks 212 at both ends of the support frame 201 have extended a part and can contact the subsequent lifting plate 213.

[0058] When the support frames 201 on both sides drive the placing plate 202 in the middle to fall along the sliding frame 301, the driving rack 309 on the support frame 201 drives the meshing driving gear 313 to rotate, so that the spray pipes 312 arranged on the charging bucket 311 expand and reset to both sides. The limit sliding columns 205 on both sides of the placing plate 202 will pass through one side of the arc-shaped inclined block 207 on the support frame 210. When the placing plate 202 falls onto the moving plate 315, the damper 314 under the moving plate 315 can buffer the mold shell on the placing plate 202 again, so that the wax liquid in the mold shell falls in an inverted manner, accelerating the speed of the wax liquid falling off from the inner cavity of the mold shell. The wax liquid will enter the collection box 211 below through the opening on the placing plate 202 for collection, and the limit sliding columns 205 at both ends of the placing plate 202 will slide along the guide groove in the lower guide block 208, so that the limit sliding columns 205 slide along the moving groove 206 to the horizontal center line of the placing plate 202, and at this time, they are aligned with the arc-shaped inclined block 207 staggered above.

[0059] By reversing the rotation of the motor 218, the threaded rod 216 drives the lifting frame 214 to slide downward along the limiting slide rod 217. When the lifting plates 213 at both ends of the lifting frame 214 descend and contact the inclined surfaces on the sliding inclined blocks 212, the lifting plates 213 will push the sliding inclined blocks 212 to slide inward into the support frame 201 again. At this time, the sliding column rod 305 located in the groove of the M-shaped groove will slide inward into the support frame 201 again along with the limiting slide plate 303. One end of the sliding column rod 305 will contact the long inclined surface, and one end of the sliding column rod 305 will slide along the long inclined surface. Under the action of the torsion spring, one end of the sliding column rod 305 will slide out from the other end of the M-shaped groove and enter the short inclined groove. At this time, the lifting plate 213 has passed through the sliding inclined block 212, and the compressed folding elastic sheet will, under the reaction force, push the sliding inclined block 212 and the upper limiting slide plate 303 to slide out and reset from both ends of the support frame 201. The steps are opposite, so that one end of the sliding column rod 305 moves to the intersection of the long inclined groove and the short inclined groove, and the buffer block 302 retracts into the support frame 201 and does not contact the sliding frame 301.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dewaxing device for a ceramic core-containing mold shell, comprising a heating box body (100), characterized in that: A vibration and reverse mechanism (200) is arranged in the heating box body (100), and a spraying buffer mechanism (300) is arranged in the vibration and reverse mechanism (200); The vibration and reverse mechanism (200) includes symmetrically arranged support frames (201) and a placement plate (202) arranged between the support frames (201). An alternating component is arranged between the support frames (201) and the placement plate (202) to make the two ends of the placement plate (202) tilt and vibrate on the support frames (201) respectively. A driving component is arranged between the support frames (201) and the heating box body (100) to drive the inverted mold shell to slide in the heating box body (100); The spraying buffer mechanism (300) includes a sliding frame (301) arranged and buffer blocks (302) symmetrically arranged at both ends of the support frames (201). Both ends of the support frames (201) slide along the inner wall of the sliding frame (301). A buffer component is arranged between the support frames (201) and the buffer blocks (302) to buffer and protect the inverted and falling mold shell. A spraying component is arranged between the sliding frame (301) and the heating box body (100) to spray the inner cavity of the lifted mold shell; 2. The dewaxing device for a ceramic core-containing mold shell according to claim 1, characterized in that: The alternating component includes elastic sliding columns (203). The elastic sliding columns (203) are symmetrically arranged at both ends of the placement plate (202). Limiting sliding grooves (204) are opened at both ends of the two support frames (201). Limiting sliding columns (205) are arranged at both ends of the placement plate (202). Moving grooves (206) are opened at both ends of the placement plate (202). The limiting sliding columns (205) are slidably connected in the moving grooves (206); 3. The dewaxing device for a ceramic core-containing mold shell according to claim 1, characterized in that: Arc-shaped inclined blocks (207) are arranged in a staggered manner at both ends of the placement plate (202). Lower guiding blocks (208) are symmetrically arranged at the bottom end of the sliding frame (301). Upper guiding blocks (209) are symmetrically arranged at the top end of the sliding frame (301). The bottom ends of the two lower guiding blocks (208) are fixedly connected to the inner wall of the heating box body (100); 4. A dewaxing device for a ceramic core-containing mold shell according to claim 3, characterized in that: One side of the arc-shaped inclined block (207) is fixedly connected to a support frame (210). The bottom end of the support frame (210) is fixedly connected to a collection box (211). The upper surface of the collection box (211) is fixedly connected to the bottom end of the sliding frame (301). The collection box (211) is arranged at the bottom end of the heating box body (100); 5. The dewaxing device for a mold shell containing a ceramic core according to claim 1, characterized in that: The driving component includes sliding inclined blocks (212). The sliding inclined blocks (212) are slidably connected to both ends of the two support frames (201). Lifting plates (213) are arranged on the lower surfaces of the sliding inclined blocks (212). One end of the lifting plate (213) is fixedly connected to a lifting frame (214). Limiting abutting columns (215) are fixedly connected to one side of the top end of the sliding frame (301); 6. The dewaxing device for a mold shell containing a ceramic core according to claim 5, characterized in that: One end of the lifting frame (214) is screwed with a threaded rod (216), the other end of the lifting frame (214) is slidably connected with a limiting slide rod (217), the bottom end of the threaded rod (216) is fixedly connected with a motor (218), the motor (218) is fixedly connected to the inner wall of the heating box body (100), both ends of the limiting slide rod (217) are fixedly connected to the heating box body (100), both ends of the placing plate (202) are fixedly connected with cylinders (219), and the output ends of the cylinders (219) are fixedly connected with clamping plates (220).

7. The dewaxing device for a mold shell containing a ceramic core according to claim 1, characterized in that: The buffer assembly includes a limiting slide plate (303), the limiting slide plate (303) is symmetrically and slidably connected to both ends of the support frame (201), one end of the limiting slide plate (303) is fixedly connected to the upper surface of the sliding inclined block (212), a limiting card slot (304) is opened at the other end of the limiting slide plate (303), and a slide column rod (305) is arranged at one end of the limiting slide plate (303).

8. A dewaxing device for a mold shell containing a ceramic core according to claim 7, characterized in that: Both of the two slide column rods (305) are connected to both ends of the support frame (201) by torsion springs, one end of the slide column rod (305) is slidably connected in the limiting card slot (304), lower racks (306) are fixedly connected to one side of the limiting slide plate (303), driven gears (307) are engaged with one side of the lower racks (306), the driven gears (307) are rotatably connected in the support frame (201), upper racks (308) are engaged above the driven gears (307), one side of the upper racks (308) is fixedly connected to the buffer block (302), and the buffer block (302) is slidably connected in the support frame (201).

9. The dewaxing device for a mold shell containing a ceramic core according to claim 1, characterized in that: The spraying assembly includes driving racks (309), both of the two driving racks (309) are fixedly connected to one side of the support frame (201), an installation frame (310) is fixedly connected to one side of the sliding frame (301), a loading bucket (311) is rotatably connected between the two installation frames (310), spray pipes (312) are arranged in a row on one side of the loading bucket (311), driving gears (313) are fixedly connected to both ends of the loading bucket (311), a damper (314) is fixedly connected to the bottom end of the sliding frame (301), and a moving plate (315) is fixedly connected to the top end of the damper (314).

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