Casting process of diaphragm disc

Abstract

The invention provides a casting process of a diaphragm disc, which comprises the following steps of: mold making: preparing a plurality of diaphragm disc casting wax molds and four riser wax molds through low-temperature wax; the multiple diaphragm disc casting wax molds are stacked, assembled and bonded through the corresponding inner sprues to form a whole, and then the four riser wax molds are bonded to the corresponding inner sprues of the uppermost diaphragm disc casting wax mold; shell making: coating and shell making are carried out on the module after tree assembling and bonding by a shell making mechanism; dewaxing: dewaxing by adopting a steam kettle; roasting: putting the raw materials in a roasting box with a dead head facing downwards, and roasting the raw materials; pouring, wherein a pouring ladle is aligned with the dead head for pouring; cleaning sand, namely cleaning sand with an electric pick; four risers are removed through gas cutting; carrying out quenching and tempering treatment on the casting; and finishing is conducted, and burrs and flashes are removed. Compared with the prior art that a module with only one diaphragm disc casting wax mold is formed, the module with the multiple diaphragm disc casting wax molds is formed, the production efficiency is greatly improved, and the product yield is increased.

Description

Technical Field

[0001] The invention relates to the field of diaphragm disc casting, and in particular to a diaphragm disc casting process. Background Art

[0002] Diaphragm disc castings are used in the axle connection of full-time four-wheel drive large mining vehicles and loaders. Gears need to be processed on both the inner and outer circles. The diaphragm disc body is fixed to the drive shaft by bolts to bear the weight of the vehicle body and drive. The internal quality requirements of the casting are high, and there must be no internal defects after processing; it is generally cast using low-temperature wax melting mold precision casting.

[0003] The outline dimensions of the diaphragm disk casting are as follows: outer circle ￠520mm, inner circle ￠300mm, thickness h85mm. According to the product shape characteristics, the casting process design places the riser at the largest thermal node of the casting. According to the thermal node circle calculation method, the inner gate size is measured to be ￠100xh20mm. Due to the large outline dimensions of the casting and the long shrinkage compensation distance, 4 risers need to be placed. According to the calculation, the riser is selected as a spherical riser of ￠200, which has a better thermal insulation effect.

[0004] At present, traditional casting processes such as Fig.11 As shown, four ￠200 spherical risers are set directly above the four inner gates of the diaphragm disk casting to meet the shrinkage requirements of molten steel. After testing after the trial production, the RT and size meet the customer's requirements, but the output rate is low. Summary of the invention

[0005] In order to solve the technical problem of low production efficiency, the present invention provides a casting process for a diaphragm disc.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] The present invention provides a casting process for a diaphragm disc, the casting process comprising the following steps:

[0008] 1) Molding: preparing a plurality of diaphragm disk casting wax molds and four riser wax molds by using low-temperature wax;

[0009] 2) Assembling trees: first, multiple wax molds of diaphragm disk castings are stacked and bonded to each other through corresponding ingates to form a whole, and then four riser wax molds are bonded to the corresponding ingates of the uppermost diaphragm disk casting wax mold;

[0010] 3) Shell making: After the module is assembled and bonded, the shell making mechanism will make the shell with coating. The first three layers are silica sol coating, followed by mullite sand 16-30 mesh, reinforcement layer water glass coating, mullite sand 10-16 mesh, and the surface layer is mullite sand 30-60 mesh;

[0011] 4) Dewaxing: After shelling, dewaxing is performed using a steam kettle at a temperature of ≥120°C for 35-40 minutes;

[0012] 5) Calcination: After dewaxing, place in a calcination box with the riser facing downwards, at a temperature of 950-1050°C for ≥90 min;

[0013] 6) Pouring, the composition is qualified, the ladle is aligned with the riser for pouring, the pouring temperature is 1550-1570℃, and the pouring time is 16-22s;

[0014] 7) Sand cleaning: Use electric pick to clean sand, and avoid impacting the casting surface;

[0015] 8) Gas cutting: remove four risers by gas cutting;

[0016] 9) Heat treatment: quenching and tempering of castings;

[0017] 10) Finishing, removing burrs and flash;

[0018] 11) Inspection: inspect the size of the diaphragm disc casting according to the drawing requirements, and conduct RT inspection according to customer requirements;

[0019] 12) Result judgment: RT test meets customer standards, dimensions meet processing requirements, and castings are qualified.

[0020] In this technical solution, by forming a module with multiple diaphragm disc casting wax molds, which is different from the prior art module with only one diaphragm disc casting wax mold, the production efficiency is greatly improved, and multiple diaphragm discs can be produced after one process flow, thereby improving the output rate.

[0021] Preferably, the shell making mechanism includes a support platform and a circular column, the bottom end of the circular column is fixedly connected to the center of the top surface of the support platform, and a rotatable circular disc is provided on the support platform; a plurality of paint buckets are arranged in a circular array on the circular disc, and a movable disc that can move up and down is arranged on one side of the top of the circular column, and four finger cylinders distributed in a circular array are fixedly installed on the bottom of the movable disc, and the finger cylinders are equipped with clamps.

[0022] In the technical solution, the shell making mechanism is used for the shell making process of the module; the four finger cylinders are used for clamping or loosening the four riser wax molds of the module through the clamping claws.

[0023] Preferably, a fixing frame is fixedly installed on the top of the circular column, and at least one transverse cylinder is fixedly installed on the fixing frame. The output shaft end of the transverse cylinder is fixedly connected to a connecting frame. A flat plate is fixedly installed on one side of the connecting frame, and a vertical cylinder is fixedly installed on the flat plate, and the output shaft end of the vertical cylinder is fixedly connected to the top surface of the movable disk; the connecting frame is fixedly connected to a transverse guide column, and the transverse guide column is gap-fittingly connected to a guide hole provided on the fixing frame, a guide sleeve is provided on the flat plate, and the guide sleeve is gap-fittingly connected to a vertical guide column, and the bottom end of the vertical guide column is fixedly connected to the top surface of the movable disk.

[0024] In the present technical solution, a horizontal cylinder and a vertical cylinder are used to drive the movable disk to move horizontally and vertically, thereby driving the module clamped under the movable disk to move together. The vertical movement is used to send the module into the paint bucket, and the horizontal movement is coordinated with the vertical movement to send the module into the kettle body of the steam kettle.

[0025] Preferably, a first gear is fixedly installed in the middle of the disc, the first gear is meshedly connected with the second gear, a motor is fixedly installed on the side wall of the circular column, and the output shaft end of the motor is fixedly connected to the middle of the second gear; a plurality of recessed holes are opened at the bottom of the disc, and balls in contact with the top surface are arranged in the recessed holes.

[0026] In the technical solution, the disc can be driven to rotate by means of the arrangement of the motor, the first gear and the second gear.

[0027] Preferably, the steam kettle is arranged on one side of the shell making mechanism, and the steam kettle comprises a kettle body and a cover body. A ramp plate is fixedly installed on the top port of the kettle body, and the distance between the ramp plate and the ground gradually decreases from left to right. The upper surface of the ramp plate is flush with the top port of the kettle body. The cover body is slidably arranged on the ramp plate, and an elastic pressing piece is arranged on the top of the cover body. The top of the elastic pressing piece is fixedly connected to one side of the flat plate through a first connecting rod; a support frame is fixedly installed on the bottom of the kettle body.

[0028] In this technical solution, the elastic clamping piece provides downward pressure for the cover body, so that the cover body can better seal the top port of the kettle body. Through the design of elastic expansion and contraction and the ramp plate, the elastic clamping piece automatically expands and contracts when the cover body slides along the ramp plate.

[0029] Preferably, a steam inlet is provided on one side of the kettle body, a carrier frame is provided in the kettle body, connecting columns are fixedly connected to both sides of the carrier frame, and the connecting columns are fixedly connected to the inner side wall of the kettle body.

[0030] In the technical solution, the steam inlet is used for high-temperature steam to enter, and the carrier frame is used for placing the module after shelling.

[0031] Preferably, an exhaust pipe is fixedly installed on the top of the cover body, and the exhaust pipe is divided into an upper section and a lower section. The upper section of the exhaust pipe is a hose, and the upper section of the exhaust pipe is connected to the cover body, and the lower section of the exhaust pipe is a hard pipe, and the lower section of the exhaust pipe is fixedly connected to the kettle body. The bottom end of the exhaust pipe is located below the kettle body, and a collecting box is arranged below the bottom end of the exhaust pipe, and the collecting box is fixedly connected to a second connecting rod, and the top end of the second connecting rod is fixedly connected to the first connecting rod.

[0032] In the present technical solution, the exhaust pipe is used to exhaust the evaporated wax vapor, which is collected by a collection box.

[0033] Preferably, the elastic pressing part includes a guide cylinder, a movable column and a column body, the top end of the guide cylinder is fixedly connected to the bottom surface of the first connecting rod, the movable column is connected to the guide cylinder with a clearance fit, and the bottom end of the movable column is fixedly connected to the top of the cover body, the guide cylinder sleeve is provided with a compressed spring, the top end of the spring is fixedly connected to the bottom surface of the first connecting rod, the bottom end of the spring is fixedly connected to the top surface of the cover body, a through hole is provided on the first connecting rod, the column body is connected to the through hole with a clearance fit, the bottom end of the column body is fixedly connected to the top end of the movable column, the top end of the column body is fixedly connected to the third connecting rod, the third connecting rod is connected to a pushing mechanism, and the pushing mechanism is arranged on the collecting box.

[0034] In the present technical solution, the pressure is provided by a compressed spring.

[0035] Preferably, the pushing mechanism includes a first rack, a second rack, a connecting strip, a push rod, an end frame, a rotating shaft, a third gear, a fourth gear and a push plate; the first rack and the second rack are both vertically arranged, the first rack is fixedly connected to the bottom end of the third connecting rod, the first rack is meshingly connected to the fourth gear, the middle part of the fourth gear is fixedly connected to the rotating shaft, both ends of the rotating shaft are rotatably mounted with end frames, and the end frame is fixedly connected to the collecting box, the third gear is fixedly mounted on the rotating shaft, the third gear is meshingly connected to the second rack, the bottom end of the second rack is fixedly connected to a connecting strip, the connecting strip is fixedly connected to a push rod, the push rod passes through a through slot opened at the bottom of the collecting box, and the top of the push rod is fixedly connected to a push plate located in the collecting box.

[0036] In the technical solution, the pushing mechanism is used to push the wax collected in the collection box out to facilitate taking it out.

[0037] Preferably, a top seat is fixedly connected to the top of the second rack, a sliding bar is fixedly connected to the top of the top seat, a sliding sleeve is fixedly connected to the outer wall of the collecting box, and the sliding bar is slidably connected to the sliding sleeve.

[0038] In this technical solution, the sliding bar and the sliding sleeve provide guidance for the vertical movement of the second rack.

[0039] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0040] The positive and progressive effects of the present invention are:

[0041] The above-mentioned casting process of a diaphragm disc is characterized in that a plurality of diaphragm disc casting wax molds are superimposed on each other and cast as a whole. After one process flow, a plurality of diaphragm discs can be obtained, which improves the process yield and reduces the production cost. At the same time, the shell making mechanism is used for automatic shell making of the module after the tree is bonded. The disc rotates on itself so that all the paint buckets on it rotate together, and the paint buckets under the movable disc are adjusted. The four finger cylinders under the movable disc clamp the four riser wax molds of the module through the clamping claws. The movable disc is driven by the vertical cylinder to move and can enter different paint buckets to automatically form a multi-layer outer shell. Through the setting of the horizontal cylinder and the vertical cylinder, after the shell making process, the module with the outer shell can be automatically sent into the steam kettle, and the cover of the steam kettle can be automatically opened and closed without manual operation. At the same time, after dewaxing in the steam kettle, the wax can be collected through the collecting box, and a pushing mechanism is provided to push out the collected and solidified wax, so as to facilitate the removal of the collected wax. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a three-dimensional structural schematic diagram of the shell making mechanism and the steam kettle of the present invention.

[0043] Figure 2 It is a schematic cross-sectional structure diagram of the shell making mechanism and the steam kettle of the present invention.

[0044] Figure 3 It is a schematic diagram of the installation structure of the movable disk of the present invention.

[0045] Figure 4 It is a structural schematic diagram of the bottom surface of the movable disk of the present invention.

[0046] Figure 5 It is a schematic structural diagram of the elastic pressing member of the present invention.

[0047] Figure 6 It is a schematic structural diagram of the bottom of the kettle body of the present invention.

[0048] Figure 7 It is a structural schematic diagram of the material pushing mechanism of the present invention.

[0049] Figure 8 It is a schematic diagram of the connection structure between the first rack and the second rack of the present invention.

[0050] Fig. 9 It is a schematic diagram of the structure inside the collection box of the present invention.

[0051] Fig.10It is a schematic diagram of the module structure after the tree assembly is bonded according to the present invention.

[0052] Fig.11 It is a schematic diagram of the module structure after the group tree is bonded in the prior art.

[0053] Fig.12 It is a casting process flow chart of the present invention.

[0054] Description of Reference Numerals

[0055] 1. Wax mold of diaphragm disc casting;

[0056] 2. Ingate;

[0057] 3. Riser wax mold;

[0058] 10. Shell making mechanism; 1001. Support table; 1002. Round column; 1003. Disc; 1004. Paint bucket; 1005. Fixed frame; 1006. Horizontal cylinder; 1007. Flat plate; 1008. Vertical cylinder; 1009. Movable plate; 1010. Finger cylinder; 1011. Horizontal guide column; 1012. Connecting frame; 1013. Guide hole; 1014. Vertical guide column; 1015. Guide sleeve; 1016. Clamp; 1017. First gear; 1018. Motor; 1019. Second gear; 1020. Ball bearing;

[0059] 20. Steam kettle; 2001. Kettle body; 2002. Cover body; 2003. Slope plate; 2004. Guide tube; 2005. Spring; 2006. Support frame; 2007. Steam inlet; 2008. Exhaust pipe; 2009. Carrier frame; 2010. Connecting column; 2011. Movable column; 2012. Column;

[0060] 30. First connecting rod;

[0061] 40. Collection box;

[0062] 50. Second connecting rod;

[0063] 60. Third connecting rod;

[0064] 70. Pushing mechanism; 7001. First rack; 7002. Second rack; 7003. Connecting bar; 7004. Push rod; 7005. End frame; 7006. Rotating shaft; 7007. Third gear; 7008. Top seat; 7009. Sliding bar; 7010. Sliding sleeve; 7011. Fourth gear; 7012. Push plate. DETAILED DESCRIPTION

[0065] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0066] like Figure 1-10 As shown, a casting process of a diaphragm disc comprises the following steps:

[0067] 1) Molding: preparing a plurality of diaphragm disk casting wax molds 1 and four riser wax molds 3 using low-temperature wax;

[0068] 2) Assembling a tree, firstly overlapping and bonding a plurality of diaphragm disk casting wax molds 1 with corresponding ingates 2 to form a whole, and then bonding four riser wax molds 3 to the corresponding ingates 2 of the uppermost diaphragm disk casting wax mold 1;

[0069] 3) Shell making: the module after tree assembly and bonding is shelled by shell making mechanism 10, the first three layers are silica sol paint, then mullite sand 16-30 mesh, reinforcement layer water glass paint, mullite sand 10-16 mesh, and surface layer is mullite sand 30-60 mesh;

[0070] 4) Dewaxing: After shelling, dewaxing is performed using a steam kettle 20, the dewaxing temperature is ≥ 120°C, and the time is 35-40 minutes;

[0071] 5) Calcination: After dewaxing, place in a calcination box with the riser facing downwards, at a temperature of 950-1050°C for ≥90 min;

[0072] 6) Pouring, the composition is qualified, the ladle is aligned with the riser for pouring, the pouring temperature is 1550-1570℃, and the pouring time is 16-22s;

[0073] 7) Sand cleaning: Use electric pick to clean sand, and avoid impacting the casting surface;

[0074] 8) Gas cutting: remove four risers by gas cutting;

[0075] 9) Heat treatment: quenching and tempering of castings;

[0076] 10) Finishing, removing burrs and flash;

[0077] 11) Inspection: inspect the size of the diaphragm disc casting according to the drawing requirements, and conduct RT inspection according to customer requirements;

[0078] 12) Result judgment: RT test meets customer standards, dimensions meet processing requirements, and castings are qualified.

[0079] After step 1) and step 2), the Fig.10 In the module shown, multiple diaphragm disc casting wax molds 1 are vertically stacked, and an inner gate 2 is provided between two adjacent diaphragm disc casting wax molds 1. The height of the inner gate 2 is 40 mm, which is used to open the spacing and ensure the strength of the mold shell; multiple diaphragm disc casting wax molds 1 are stacked together and cast together as a whole. Multiple diaphragm discs can be cast at one time, which improves the output rate.

[0080] like Figure 1-5 As shown, the shell making mechanism 10 includes a support platform 1001 and a circular column 1002, the bottom end of the circular column 1002 is fixedly connected to the center of the top surface of the support platform 1001, and a rotatable disc 1003 is arranged on the support platform 1001; a plurality of paint buckets 1004 are arranged in a circular array on the circular disc 1003, and a movable disc 1009 that can move up and down is arranged on one side of the top of the circular column 1002, and four finger cylinders 1010 distributed in a circular array are fixedly installed on the bottom of the movable disc 1009, and the finger cylinder 1010 is equipped with a clamp 1016.

[0081] A fixing frame 1005 is fixedly installed on the top of the circular column 1002, and at least one horizontal cylinder 1006 is fixedly installed on the fixing frame 1005. The output shaft end of the horizontal cylinder 1006 is fixedly connected to a connecting frame 1012. A flat plate 1007 is fixedly installed on one side of the connecting frame 1012, and a vertical cylinder 1008 is fixedly installed on the flat plate 1007. The output shaft end of the vertical cylinder 1008 is fixedly connected to the top surface of the movable disk 1009; the connecting frame 1012 is fixedly connected to a horizontal guide column 1011, and the horizontal guide column 1011 is connected with a guide hole 1013 provided on the fixing frame 1005 with a clearance fit. A guide sleeve 1015 is provided on the flat plate 1007, and the guide sleeve 1015 is connected with a vertical guide column 1014 with a clearance fit. The bottom end of the vertical guide column 1014 is fixedly connected to the top surface of the movable disk 1009.

[0082] A first gear 1017 is fixedly installed in the middle of the disc 1003, and the first gear 1017 is meshedly connected with the second gear 1019. A motor 1018 is fixedly installed on the side wall of the circular column 1002, and the output shaft end of the motor 1018 is fixedly connected to the middle of the second gear 1019. A plurality of concave holes are opened at the bottom of the disc 1003, and balls 1020 in contact with the top surface are arranged in the concave holes.

[0083] The module after the tree assembly is bonded is shelled through step 3); the specific operation is as follows: the four finger cylinders 1010 all make the clamping jaws 1016 in the open state, and the four riser wax molds 3 on the top of the module are placed on the clamping jaws 1016 of the four finger cylinders 1010, and the finger cylinders 1010 drive the clamping jaws 1016 to clamp the four riser wax molds 3 to achieve the clamping of the module.

[0084] The multiple paint buckets 1004 are filled with different paints, such as silica sol paint, mullite mortar 16-30 mesh, reinforcement layer water glass paint, mullite mortar 10-16 mesh, and mullite mortar 30-60 mesh.

[0085] The second gear 1019 is driven to rotate by the motor 1018, and the second gear 1019 is meshed with the first gear 1017 to make the disc 1003 rotate, thereby changing the paint bucket 1004 under the movable disc 1009. The vertical cylinder 1008 drives the movable disc 1009 downward, so that the module under the movable disc 1009 enters the paint bucket 1004 and adheres to the paint. Then the vertical cylinder 1008 drives the movable disc 1009 upward, so that the module leaves the paint bucket 1004 to form a layer of shell. By moving all the paint buckets 1004 to the bottom of the movable disc 1009 in turn and driving them through the vertical cylinder 1008, the modules enter and leave the paint bucket 1004 to form a multi-layer shell.

[0086] The vertical cylinder 1008 drives the movable disk 1009 to move, and provides a guiding function through the vertical guide column 1014 and the guide sleeve 1015.

[0087] The motor 1018 is a stepper motor 1018 .

[0088] like Figure 1 , Figure 2 , Figure 5 as well as Figure 6 As shown, the steam kettle 20 is arranged on one side of the shell making mechanism 10, and the steam kettle 20 includes a kettle body 2001 and a cover body 2002. A ramp plate 2003 is fixedly installed at the top end of the kettle body 2001. The distance between the ramp plate 2003 and the ground gradually decreases from left to right. The upper surface of the ramp plate 2003 is flush with the top end of the kettle body 2001. The cover body 2002 is slidably arranged on the ramp plate 2003, and an elastic pressing piece is arranged on the top of the cover body 2002. The top of the elastic pressing piece is fixedly connected to one side of the flat plate 1007 through the first connecting rod 30; a support frame 2006 is fixedly installed at the bottom of the kettle body 2001.

[0089] A steam inlet 2007 is disposed on one side of the kettle body 2001 . A carrier frame 2009 is disposed inside the kettle body 2001 . Connecting columns 2010 are fixedly connected to both sides of the carrier frame 2009 . The connecting columns 2010 are fixedly connected to the inner side wall of the kettle body 2001 .

[0090] An exhaust pipe 2008 is fixedly installed on the top of the cover body 2002, and the exhaust pipe 2008 is divided into an upper section and a lower section. The upper section of the exhaust pipe 2008 is a hose, and the upper section of the exhaust pipe 2008 is connected to the cover body 2002, and the lower section of the exhaust pipe 2008 is a hard pipe, and the lower section of the exhaust pipe 2008 is fixedly connected to the kettle body 2001. The bottom end of the exhaust pipe 2008 is located below the kettle body 2001, and a collecting box 40 is arranged below the bottom end of the exhaust pipe 2008, and the collecting box 40 is fixedly connected to a second connecting rod 50, and the top end of the second connecting rod 50 is fixedly connected to the first connecting rod 30.

[0091] The elastic clamping member includes a guide cylinder 2004, a movable column 2011 and a column 2012, the top of the guide cylinder 2004 is fixedly connected to the bottom surface of the first connecting rod 30, the movable column 2011 is connected to the guide cylinder 2004 with a clearance fit, and the bottom end of the movable column 2011 is fixedly connected to the top of the cover body 2002, the guide cylinder 2004 is outerly provided with a compressed spring 2005, the top of the spring 2005 is fixedly connected to the bottom surface of the first connecting rod 30, the bottom end of the spring 2005 is fixedly connected to the top surface of the cover body 2002, the first connecting rod 30 is provided with a through hole, the column 2012 is connected to the through hole with a clearance fit, the bottom end of the column 2012 is fixedly connected to the top of the movable column 2011, the top of the column 2012 is fixedly connected to the third connecting rod 60, the third connecting rod 60 is connected to a pushing mechanism 70, and the pushing mechanism 70 is arranged on the collection box 40.

[0092] After step 3), the horizontal cylinder 1006 is extended to move the connecting frame 1012 and the flat plate 1007 to the right together, and during the movement, the horizontal guide column 1011 and the guide hole 1013 on the fixed frame 1005 provide guidance, so that the movable plate 1009 and the module clamped below are moved to the top of the kettle body 2001; in the above movement, the flat plate 1007 drives the elastic clamping piece to move through the first connecting rod 30, and the elastic clamping piece drives the cover body 2002 to move together, and the cover body 2002 slides along the ramp plate 2003, and the cover body 2002 leaves the top port of the kettle body 2001, so that the top port of the kettle body 2001 is opened, and the automatic opening of the cover body 2002 is achieved through the above design.

[0093] Then the vertical cylinder 1008 is extended to move the shelled module into the carrier frame 2009, and then the clamp 1016 releases the module, the vertical cylinder 1008 contracts, and the horizontal cylinder 1006 contracts to reset the movable disk 1009. After resetting, the cover body 2002 re-seals the top port of the kettle body 2001.

[0094] The steam inlet 2007 is connected to an external steam device, so that high-temperature steam enters the kettle body 2001 through the steam inlet 2007 to perform dewaxing.

[0095] Wax vapor and water vapor are discharged through the exhaust pipe 2008. The lower section of the exhaust pipe 2008 is made of metal. At the same time, a heat dissipation structure is provided, such as water cooling. A coil is provided around the lower section of the exhaust pipe 2008, and cold water continuously flows through the coil to liquefy the water vapor and wax vapor, and then discharged into the collection box 40 for collection.

[0096] After collection, the water is located below the collection tank 40 and the wax is located above the water and solidified.

[0097] The upper section of the exhaust pipe 2008 is a hose, and a sufficient length is reserved for the movement of the cover body 2002 .

[0098] After dewaxing, the horizontal cylinder 1006 drives the cover body 2002 to leave the top port of the kettle body 2001, and moves the movable disk 1009 to above the top port of the kettle body 2001, and the vertical cylinder 1008 drives the movable disk 1009 downward, and then the dewaxed shell is clamped by the finger cylinder 1010 and the clamp 1016, and the vertical cylinder 1008 contracts to lift the shell to above the top port of the kettle body 2001, and then the clamp 1016 is released to remove the shell.

[0099] During the above process, the plate 1007 moves, and drives the collecting box 40 to move to the right through the second connecting rod 50, leaving the bottom of the kettle body 2001.

[0100] like Figure 6-9 As shown, the pushing mechanism 70 includes a first rack 7001, a second rack 7002, a connecting bar 7003, a push rod 7004, an end frame 7005, a rotating shaft 7006, a third gear 7007, a fourth gear 7011 and a pushing plate 7012; the first rack 7001 and the second rack 7002 are both vertically arranged, the first rack 7001 is fixedly connected to the bottom end of the third connecting rod 60, the first rack 7001 is meshedly connected to the fourth gear 7011, the middle part of the fourth gear 7011 is fixedly connected to the rotating shaft 7006, and the End frames 7005 are rotatably installed at both ends of the rotating shaft 7006, and the end frames 7005 are fixedly connected to the collection box 40. A third gear 7007 is fixedly installed on the rotating shaft 7006. The third gear 7007 is meshingly connected to the second rack 7002. A connecting strip 7003 is fixedly connected to the bottom end of the second rack 7002. A push rod 7004 is fixedly connected to the connecting strip 7003. The push rod 7004 passes through a through slot opened at the bottom of the collection box 40. The top of the push rod 7004 is fixedly connected to a push plate 7012 located in the collection box 40.

[0101] A top seat 7008 is fixedly connected to the top of the second rack 7002 , a sliding bar 7009 is fixedly connected to the top of the top seat 7008 , a sliding sleeve 7010 is fixedly connected to the outer wall of the collection box 40 , and the sliding bar 7009 is slidably connected to the sliding sleeve 7010 .

[0102] When the cover body 2002 moves to the right, the top port of the kettle body 2001 is opened. During the movement of the cover body 2002 to the right, the cover body 2002 slides on the ramp plate 2003 and moves downhill, and the spring 2005 in the elastic clamping member is in a compressed state. The elastic force of the spring 2005 causes the movable column 2011 to move downward, and the third connecting rod 60 is driven to move through the column 2012. The third connecting rod 60 drives the first rack 7001 to move, and the first rack 7001 is meshed with the fourth gear 7011 to rotate the rotating shaft 7006. The third gear 7007 rotates with the rotating shaft 7006, and the third gear 7007 drives the second rack 7002 to move upward. The second rack 7002 drives the push plate 7012 to move upward through the push rod 7004. The push plate 7012 is separated from the through slot at the bottom of the collecting box 40, and the water in the collecting box 40 is discharged through the through slot, and the push plate 7012 moves upward to push the solidified wax out.

[0103] The cover 2002 moves to the left to reset, and the top surface of the ramp plate 2003 goes uphill, the movable column 2011 resets, the push mechanism 70 is driven to reset, and the push plate 7012 returns to the position as shown in FIG. Fig. 9 shown.

[0104] The above design makes it convenient to take out the wax after collection.

[0105] The present invention is not limited to the above-mentioned embodiments. Any changes in shape or structure are within the protection scope of the present invention. The protection scope of the present invention is defined by the attached claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications are within the protection scope of the present invention.

Claims

1. A diaphragm disc casting process, characterized in that: The casting process comprises the following steps: 1) Molding, preparing a plurality of diaphragm disk casting wax molds (1) and four riser wax molds (3) using low-temperature wax; 2) Assembling a tree, firstly overlapping and bonding a plurality of diaphragm disk casting wax models (1) with corresponding ingates (2) to form a whole, and then bonding four riser wax models (3) to the corresponding ingates (2) of the uppermost diaphragm disk casting wax model (1); 3) Shell making: the module after assembly and bonding is shelled by a shell making mechanism (10), wherein the first three layers are silica sol paint, followed by mullite sand of 16-30 mesh, a reinforcement layer of water glass paint, mullite sand of 10-16 mesh, and a surface layer of mullite sand of 30-60 mesh; 4) Dewaxing: after shelling, dewaxing is performed using a steam kettle (20) at a dewaxing temperature of ≥120°C for 35-40 minutes; 5) Calcination: After dewaxing, place in a calcination box with the riser facing downwards, at a temperature of 950-1050°C for ≥90 min; 6) Pouring, the composition is qualified, the ladle is aligned with the riser for pouring, the pouring temperature is 1550-1570℃, and the pouring time is 16-22s; 7) Sand cleaning: Use electric pick to clean sand, and avoid impacting the casting surface; 8) Gas cutting: remove four risers by gas cutting; 9) Heat treatment: quenching and tempering of castings; 10) Finishing, removing burrs and flash; 11) Inspection: inspect the size of the diaphragm disc casting according to the drawing requirements, and conduct RT inspection according to customer requirements; 12) Result judgment: RT test meets customer standards, dimensions meet processing requirements, and castings are qualified.

2. A diaphragm disc casting process as claimed in claim 1, characterized in that: The shell making mechanism (10) comprises a support platform (1001) and a circular column (1002), wherein the bottom end of the circular column (1002) is fixedly connected to the center of the top surface of the support platform (1001), and a rotatable circular disc (1003) is arranged on the support platform (1001); a plurality of paint buckets (1004) are arranged in a circular array on the circular disc (1003), and a movable disc (1009) that can move up and down is arranged on one side of the top of the circular column (1002), and four finger cylinders (1010) distributed in a circular array are fixedly installed at the bottom of the movable disc (1009), and the finger cylinders (1010) are installed with clamping claws (1016).

3. A diaphragm disc casting process as claimed in claim 2, characterized in that: A fixing frame (1005) is fixedly mounted on the top of the circular column (1002), and at least one horizontal cylinder (1006) is fixedly mounted on the fixing frame (1005). The output shaft end of the horizontal cylinder (1006) is fixedly connected to a connecting frame (1012), and a flat plate (1007) is fixedly mounted on one side of the connecting frame (1012). A vertical cylinder (1008) is fixedly mounted on the flat plate (1007), and the output shaft of the vertical cylinder (1008) is fixedly mounted on the flat plate (1007). The end is fixedly connected to the top surface of the movable disk (1009); the connecting frame (1012) is fixedly connected with a horizontal guide column (1011), and the horizontal guide column (1011) is connected with a guide hole (1013) provided on the fixed frame (1005) in a clearance fit; the flat plate (1007) is provided with a guide sleeve (1015), and the guide sleeve (1015) is connected with a vertical guide column (1014) in a clearance fit; the bottom end of the vertical guide column (1014) is fixedly connected to the top surface of the movable disk (1009).

4. A diaphragm disc casting process as claimed in claim 2, characterized in that: A first gear (1017) is fixedly mounted in the middle of the circular disk (1003), and the first gear (1017) is meshedly connected with a second gear (1019); a motor (1018) is fixedly mounted on the side wall of the circular column (1002), and the output shaft end of the motor (1018) is fixedly connected to the middle of the second gear (1019); a plurality of concave holes are provided at the bottom of the circular disk (1003), and balls (1020) are arranged in the concave holes to contact the top surface of (1001).

5. A diaphragm disc casting process as claimed in claim 3, characterized in that: The steam kettle (20) is arranged on one side of the shell making mechanism (10), and the steam kettle (20) comprises a kettle body (2001) and a cover body (2002). A ramp plate (2003) is fixedly installed on the top end of the kettle body (2001), and the distance between the ramp plate (2003) and the ground gradually decreases from left to right. The upper surface of the ramp plate (2003) is flush with the top end of the kettle body (2001). The cover body (2002) is slidably arranged on the ramp plate (2003), and an elastic pressing piece is arranged on the top of the cover body (2002), and the top of the elastic pressing piece is fixedly connected to one side of the flat plate (1007) through a first connecting rod (30); a support frame (2006) is fixedly installed on the bottom of the kettle body (2001).

6. A diaphragm disc casting process as claimed in claim 5, characterized in that: A steam inlet (2007) is provided on one side of the kettle body (2001), a carrier frame (2009) is provided inside the kettle body (2001), connecting columns (2010) are fixedly connected to both sides of the carrier frame (2009), and the connecting columns (2010) are fixedly connected to the inner side wall of the kettle body (2001).

7. A diaphragm disc casting process as claimed in claim 5, characterized in that: An exhaust pipe (2008) is fixedly installed on the top of the cover body (2002), and the exhaust pipe (2008) is divided into an upper section and a lower section. The upper section of the exhaust pipe (2008) is a hose, and the upper section of the exhaust pipe (2008) is connected to the cover body (2002), and the lower section of the exhaust pipe (2008) is a hard pipe, and the lower section of the exhaust pipe (2008) is fixedly connected to the kettle body (2001). The bottom end of the exhaust pipe (2008) is located below the kettle body (2001), and a collection box (40) is provided below the bottom end of the exhaust pipe (2008), and the collection box (40) is fixedly connected to a second connecting rod (50), and the top end of the second connecting rod (50) is fixedly connected to the first connecting rod (30).

8. A diaphragm disc casting process as claimed in claim 5, characterized in that: The elastic pressing member comprises a guide cylinder (2004), a movable column (2011) and a column (2012); the top end of the guide cylinder (2004) is fixedly connected to the bottom surface of the first connecting rod (30); the movable column (2011) is connected to the guide cylinder (2004) with clearance fit, and the bottom end of the movable column (2011) is fixedly connected to the top of the cover body (2002); the guide cylinder (2004) is provided with a compressed spring (2005) on its outer sleeve; the top end of the spring (2005) is fixedly connected to the first connecting rod (30 ) bottom surface is fixedly connected, the bottom end of the spring (2005) is fixedly connected to the top surface of the cover body (2002), a through hole is opened on the first connecting rod (30), the column (2012) is connected with the through hole with clearance fit, the bottom end of the column (2012) is fixedly connected to the top end of the movable column (2011), the top end of the column (2012) is fixedly connected to the third connecting rod (60), the third connecting rod (60) is connected to a pushing mechanism (70), and the pushing mechanism (70) is arranged on the collection box (40).

9. A diaphragm disk casting process as claimed in claim 8, characterized in that: The pushing mechanism (70) comprises a first rack (7001), a second rack (7002), a connecting bar (7003), a push rod (7004), an end frame (7005), a rotating shaft (7006), a third gear (7007), a fourth gear (7011) and a pushing plate (7012); the first rack (7001) and the second rack (7002) are both vertically arranged, the first rack (7001) is fixedly connected to the bottom end of the third connecting rod (60), the first rack (7001) is meshedly connected to the fourth gear (7011), the middle part of the fourth gear (7011) is fixedly connected to the rotating shaft (7006), the rotating shaft (7006) is End frames (7005) are rotatably mounted at both ends of the shaft (7006), and the end frames (7005) are fixedly connected to the collection box (40); a third gear (7007) is fixedly mounted on the rotating shaft (7006), and the third gear (7007) is meshingly connected to the second rack (7002); a connecting strip (7003) is fixedly connected to the bottom end of the second rack (7002), and a push rod (7004) is fixedly connected to the connecting strip (7003); the push rod (7004) passes through a through slot provided at the bottom of the collection box (40), and the top end of the push rod (7004) is fixedly connected to a push plate (7012) located in the collection box (40).

10. A diaphragm disk casting process as claimed in claim 9, characterized in that: The top of the second rack (7002) is fixedly connected to a top seat (7008), the top of the top seat (7008) is fixedly connected to a slide bar (7009), the outer wall of the collection box (40) is fixedly connected to a slide sleeve (7010), and the slide bar (7009) is slidably connected to the slide sleeve (7010).

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