CN112719215A - Pump body casting equipment and casting process - Google Patents
Pump body casting equipment and casting process Download PDFInfo
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- CN112719215A CN112719215A CN202011530293.6A CN202011530293A CN112719215A CN 112719215 A CN112719215 A CN 112719215A CN 202011530293 A CN202011530293 A CN 202011530293A CN 112719215 A CN112719215 A CN 112719215A
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- box body
- core
- pump body
- supporting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/106—Vented or reinforced cores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
- B22D29/001—Removing cores
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- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a pump body casting equipment and casting process, the power distribution box comprises an upper box body, the well box body, lower box body, core and setting element, lower box body upper surface is equipped with mould die cavity, be equipped with well mould die cavity on the well box body, lower box body lower surface is equipped with lower mould chamber, go up the box body, the well box body, cover in proper order through the setting element between the lower box body and close the locking, on, in, lower mould chamber forms pump body die cavity jointly, the core is located in pump body die cavity through support piece, the sprue gate and the overflow riser of mould die cavity are gone up in the intercommunication are seted up to upper box body surface, support piece includes bracing piece and supporting shoe, the bracing piece is equipped with two, the one end of bracing piece stretches into in the core, the other end stretches out the core and is connected with the supporting shoe, one. This application supports the supporting shoe of the bracing piece on the core in the extension tank to carry out good support and location to the core, thereby promote the casting effect.
Description
Technical Field
The application relates to the technical field of pump body casting, in particular to pump body casting equipment and a casting process.
Background
The casting technology is an old and new metal forming method, and the pump body is usually processed by the casting technology. And during casting, two boxes or three boxes are selected according to the parting surface of the pump body. For example, three-box casting is performed by superposing an upper box body, a middle box body and a lower box body, forming a casting space of a pump body in the superposed box body through cavities on the upper box body, the middle box body and the lower box body, putting a core in the casting space in advance, injecting molten liquid metal into the casting space through a pouring gate, discharging gas in the casting space through an overflow riser and an exhaust port, cooling after casting, demolding and cleaning to obtain a finished pump body.
In view of the above-mentioned related art, the inventor believes that the core cannot directly contact the walls of the cavities of the upper box body, the middle box body and the lower box body, but the core is required to be well positioned and supported in the casting space, so that the wall thickness of the pump body after casting is ensured, and the positioning and the supporting of the core are difficult.
Disclosure of Invention
In order to better position and support the core, thereby obtain the better pump body of quality, this application provides a pump body casting equipment.
The application provides a pump body casting equipment adopts following technical scheme:
the utility model provides a pump body casting equipment, includes box, well box, lower box, core and setting element, and lower box upper surface is provided with the mould die cavity, is provided with well mould die cavity on the well box, and lower box lower surface is provided with down the mold cavity, goes up box, well box, closes locking through the setting element lid in proper order between the lower box, goes up mold cavity, well mould die cavity, lower mold cavity and forms pump body die cavity jointly, and the core passes through support piece and sets up in pump body die cavity, and the sprue gate and the overflow riser of mould die cavity are gone up in the intercommunication are seted up to upper box surface, support piece includes bracing piece and supporting shoe, the bracing piece is provided with two, and in the one end of bracing piece stretched into the core, the other end stretched out the core and was connected with the supporting shoe, and one section extension slot has been seted up to the.
By adopting the technical scheme, the upper die cavity, the lower die cavity, the middle die cavity and the core form the pump body cavity for molding the pump shell together, molten liquid metal is poured into the pouring gate, when the pump body cavity is filled with the liquid metal and is ejected from the overflow riser, the liquid metal is stopped being added and cooled, so that the metal is solidified, the pump body is obtained after demolding, and then the core in the pump body is damaged and cleaned; when the lower box body and the middle box body are assembled, one end of the lower box body, which corresponds to the position of the pump opening, is provided with an extension groove and extends to a position far away from the lower mold cavity, then a supporting block of a supporting rod on the mold core is supported in the extension groove, so that the mold core is supported and positioned, the original shape of the pump body can be obtained by cutting and adjusting an entity part correspondingly generated by the extension groove after casting, and the mold core can be well supported through the supporting block and the extension groove, so that the quality of the cast pump body is better ensured.
Optionally, a plurality of supporting fins are arranged on the part of the supporting rod extending into the mold core and distributed along the length direction of the supporting rod.
Through adopting above-mentioned technical scheme, the core relies on the molding sand sintering to form, puts into the bracing piece when the sintering, utilizes the active area that supports between fin increase bracing piece and the molding sand for the core that the sintering obtained has better structural strength, and the molding sand is difficult for scattering.
Optionally, the support fins are distributed on two sides of the support rod, each side of the support fins is a group and respectively includes a first fin group and a second fin group, fins in the first fin group and fins in the second fin group are alternately distributed at intervals, and the distance between adjacent support fins in the first fin group is the same as the distance between adjacent support fins in the second fin group.
Through adopting above-mentioned technical scheme, both sides equipartition is put the support fin and is evenly distributed at interval each other, can make the combination of core and bracing piece more firm, difficult loose.
Optionally, the first fin group is located on the side of the support rod facing the center of gravity of the core, and the second fin group is located on the other side; the surface of first fin group orientation mold cavity is the horizontal plane, and the surface of going up the mould cavity back to is provided with first helical blade, and first helical blade plays in the bottom surface of the support fin of first fin group to support fin direction setting to second fin group along the screw-out direction, and the surface of mould cavity is gone up to the second fin group back to is the horizontal plane, and the surface of going up the mould cavity towards is provided with second helical blade, second helical blade plays in the upper surface of the support fin of second fin group to support fin direction setting to first fin group along the screw-out direction, first helical blade and second helical blade are the width at the support fin and are the biggest and reduce along the screw-out direction gradually, first helical blade and second helical blade's thread radius and pitch are the same, and helix angle is ninety degrees.
Through adopting above-mentioned technical scheme, the horizontal plane holds the core and guarantees the lifting surface area, and first helical blade and second helical blade are convenient for inside the core of cutting when rotating the bracing piece after the drawing of patterns to reduce the resistance, and when rotating along the bracing piece direction of unscrewing, can drive the sand in the core outwards see-out.
Optionally, a connecting portion for connecting with a driving motor is arranged on a portion of the support rod extending out of the core mold.
Through adopting above-mentioned technical scheme, connect driving motor through connecting portion, driving motor drives the bracing piece and rotates to destroy and clear up the core, reduce workman intensity of labour.
Optionally, connecting portion include the adapter sleeve, support feeler lever, inserted block, and the jack has been seted up to the tip that the bracing piece is located the core outer, adapter sleeve one end is seted up in inserting the jack, and the other end is offered and is used for supplying driving motor output shaft male drive hole, and the outer wall of the part that the adapter sleeve inserted in the jack is seted up along the radial hole that slides that sets up of adapter sleeve, and the inserted block slides in the hole that slides, and the one end that the inserted block was close to each other stretches into in the drive hole, and the pole that supports slides and connects in the drive hole, and is equipped with towards the one end of jack and is used for contradicting and promotes the inserted block and keep away from mutually thereby making the inserted block support the toper drive head of tight jack inner wall, and.
Through adopting above-mentioned technical scheme, during the use, insert driving motor output shaft in the drive hole, and with the drive hole joint, the tip and the conflict pole of driving motor's output shaft are contradicted, thereby promote the toper drive head and push away the inserted block, the inserted block slides along the slide opening and supports tightly with the jack inner wall, then start driving motor, the driving motor output shaft rotates and drives the adapter sleeve and rotate, and then drive the bracing piece and rotate, thereby stir the core, and the adapter sleeve rotates with driving motor is synchronous, when the resistance is great, to the outside driving motor that moves of drive hole, the inserted block breaks away from with the jack inner wall, can skid between adapter sleeve and the bracing piece.
Optionally, the method is characterized in that: the setting element includes locating piece and locating pin, the locating piece sets up on the lateral wall of last box, well box, lower box, and every lateral wall is provided with one at least, and goes up the locating piece of box, well box, lower box and distribute along vertical direction, and the pinhole of vertical direction is seted up on the locating piece surface, and the locating pin is from last to passing the pinhole of the locating piece of last box, well box, lower box in proper order down and locking through lock nut fixedly.
Through adopting above-mentioned technical scheme, after will go up box, well box, lower box coincide, with the locating pin from last to passing the pinhole of locating piece down in proper order, rethread lock nut locks to make and can not take place relative rotation between last box, well box, the lower box, can guarantee casting quality better.
Another object of the present application is to provide a casting process of a pump body.
A casting process for a pump body, comprising: s001, sand mixing, namely selecting the type of sand according to needs, and mixing sand for a mold core and sand for modeling; s002, core making, namely, making a core by using a pump body product to obtain a core; s003, molding, namely forming corresponding cavities in the lower box body, the middle box body and the upper box body, and forming a pouring gate and an overflow riser on the upper box body; s004, die assembly and casting are carried out, the upper box body, the middle box body and the lower box body are combined, the internal spaces of the three box bodies form a pump body cavity, before the box combination, a mold core is placed into the pump body cavity, metal liquid is poured into a pouring gate and overflows an overflow riser; s005, cooling and cleaning sand, pulling the three box bodies away after cooling, taking out the pump body, and cleaning sand on the outer surface and the inner part of the pump body; s006, performing surface treatment, cutting redundant parts, and grinding and polishing the surface of the pump body to obtain a finished product; s002, during core making, two support rods are placed in the mold cavity of the mold core for molding, the portions, provided with the support fins, of the support rods are located in the mold cavity of the mold core, the mounting portions of the support rods and the support blocks are located outside the mold cavity of the mold core, during lower mold molding, an elongated groove is dug in the outer side of the position, corresponding to a pump port of a pump body, of the lower mold cavity to form an elongated section cavity, and the support blocks are placed at the bottom of the elongated groove.
Through adopting above-mentioned technical scheme, utilize the supporting shoe to support the core in the extension tank, form the unnecessary part with extension section chamber adaptation outside the pump body after the casting, get rid of this part after the drawing of patterns, do not influence the structural shape of the pump body to can solve the support location problem of core better, guarantee the casting effect.
Optionally, when S005 and the sand is cleaned through cooling, the output shaft of the driving motor is inserted into the driving hole and connected with the driving hole through threads, and the driving motor is started to drive the supporting rod to rotate in the direction of screwing out the mold core.
Through adopting above-mentioned technical scheme, rotate through driving motor output shaft and drive the bracing piece and rotate and clear sand, the core structure is fragile, and is efficient, and the amount of labour is little.
Optionally, the driving motor drives the supporting rod to intermittently rotate.
Through adopting above-mentioned technical scheme, the bracing piece rupture is avoided in intermittent type rotation.
In summary, the present application includes at least one of the following beneficial technical effects:
1. an elongated slot is formed in one end, corresponding to the position of a pump opening, of the lower box body, extends to the position far away from the cavity of the lower mold, then a supporting block of a supporting rod on the mold core is supported in the elongated slot, so that the mold core is supported and positioned, the original shape of the pump body can be obtained by cutting and adjusting an entity part correspondingly generated by the elongated slot after casting, and the mold core can be well supported through the action of the supporting block and the elongated slot, so that the quality of the cast pump body is better ensured;
2. the mold core is formed by sintering molding sand, the supporting rods are placed in the mold core during sintering, the acting area between the supporting rods and the molding sand is increased by the aid of the supporting fins, so that the mold core obtained by sintering has better structural strength, the supporting fins are arranged on two sides of the mold core and are uniformly distributed at intervals, and the mold core and the supporting rods can be combined more firmly and are not easy to loosen;
3. the horizontal plane holds the mold core to ensure the stress area, the helical cutting edge is convenient for cutting the interior of the mold core when the supporting rod is rotated after demolding, the resistance is reduced, and when the supporting rod is rotated along the direction of the helical cutting edge, the supporting rod moves out of the mold core and drives sand in the mold core to be sent out.
Drawings
Fig. 1 is a schematic structural view of a pump body casting apparatus according to embodiment 1 of the present application.
Fig. 2 is a schematic structural view of a lower box of the pump body casting apparatus according to embodiment 1 of the present application.
Fig. 3 is a schematic structural diagram of a core and a support member of a pump body casting apparatus according to embodiment 1 of the present application.
Fig. 4 is an exploded view of a core and a support of a pump casting apparatus according to embodiment 1 of the present application.
Fig. 5 is an exploded view of the left side support member and the driving motor of fig. 4.
Fig. 6 is an exploded view of the right support and drive motor of fig. 4.
Fig. 7 is a cross-sectional view illustrating an installation relationship among a support member, an attachment portion, and a driving motor of the pump body casting apparatus according to embodiment 1 of the present application.
Description of reference numerals: 1. an upper box body; 12. a pouring gate; 13. an overflow riser; 2. a middle box body; 3. a lower box body; 31. a lower mold cavity; 4. a core; 5. a positioning member; 51. positioning blocks; 52. positioning pins; 53. a pin hole; 54. locking the nut; 6. a support member; 61. a support bar; 611. a jack; 62. a support block; 63. an elongated slot; 7. a first fin group; 8. a second fin group; 71. a first helical cutting edge; 81. a second helical cutting edge; 9. a connecting portion; 91. connecting sleeves; 911. a drive aperture; 912. a sliding hole; 92. a touch bar; 921. a conical drive head; 93. inserting a block; 94. the motor is driven.
Detailed Description
The present application is described in further detail below with reference to figures 1-7.
The embodiment of the application discloses pump body casting equipment, refer to fig. 1, including last box 1, well box 2, lower box 3, core 4 and setting element 5.
As shown in fig. 1 and fig. 2, the lower box body 3 is placed into a mold corresponding to the lower mold cavity 31 and sand is filled, so that the lower mold cavity 31 is formed on the upper surface of the lower box body 3, the upper box body 1 is placed into a mold corresponding to the lower mold cavity 31 and sand is filled, so that the upper mold cavity is formed on the lower surface of the upper box body 1, the middle box body 2 is placed into a mold corresponding to the middle mold cavity, so that the middle inner wall of the middle box body 2 forms a middle mold cavity, the upper box body 1, the middle box body 2 and the lower box body 3 are sequentially covered and locked by a positioning piece 5, the upper mold cavity, the middle mold cavity and the lower mold cavity 31 together form a pump body cavity, the mold core 4 is arranged in the pump body cavity by a supporting piece 6, the upper mold cavity, the middle mold cavity, the lower mold cavity 31 and the mold core 4 together form a casting space for casting and molding, the pouring gate 12 is used for pouring liquid metal, so that the liquid metal fills the casting space, and the liquid metal is discharged from the overflow riser 13 after the liquid metal fills the casting space.
The positioning piece 5 comprises a positioning block 51 and two positioning pins 52, the positioning block 51 is arranged on the upper box body 1, the middle box body 2 and the side wall of the lower box body 3, each side wall is provided with two positioning pins 1, the middle box body 2 and the positioning block 51 of the lower box body 3 are distributed along the vertical direction, a pin hole 53 which is in the vertical direction and penetrates through the positioning block 51 is formed in the surface of the positioning block 51, the positioning pins 52 sequentially penetrate through the pin holes 53 of the positioning blocks 51 of the upper box body 1, the middle box body 2 and the lower box body 3 from top to bottom, two locking nuts 54 are connected to the positioning pins 52 in a threaded manner, one locking nut 54 abuts against the upper surface of the positioning block 51 on the upper box body 1, and the other locking nut 54 abuts against the bottom surface of the positioning block 51 on the lower box body 3, so that the upper box body 1, the middle box body 2 and the lower box.
As shown in fig. 2 and 3, the supporting member 6 includes two supporting rods 61 and two supporting blocks 62, one end of each supporting rod 61 extends into the mold core 4, the other end of each supporting rod extends out of the mold core 4 and is connected to the supporting block 62, a section of the elongated slot 63 is formed in the lower mold cavity 31 corresponding to the pump opening to form an elongated cavity, the supporting block 62 is supported in the elongated slot 63, and the section of each supporting block 62 is the same as that of the elongated slot 63, so that the side surface of each supporting block 62 can also abut against the side wall of the elongated slot 63, and the supporting stability is improved.
As shown in fig. 3 and 4, support fins are integrally arranged on a portion of the support rod 61 extending into the mold core 4, the support fins are distributed on two sides of the support rod 61, each side of the support fin is a group and respectively includes a first fin group 7 and a second fin group 8, the support fins in the first fin group 7 and the second fin group 8 are alternately distributed at intervals along the length direction of the support rod 61, the distance between adjacent support fins in the first fin group 7 is the same as the distance between adjacent support fins in the second fin group 8, that is, the distance between adjacent support fins in all the support fins along the length direction of the support rod 61 is the same.
The inserting position of the support rod 61 is the position of the core 4 corresponding to the molding pump opening, the support rod 61 and the pump opening of the pump body are coaxially arranged and horizontally extend into the core 4, the first fin group 7 is located on the side of the support rod 61 facing the center of gravity of the core 4, and the second fin group 8 is located on the other side.
As shown in fig. 5 and 6, the surface of the first fin group 7 facing the upper die cavity is a horizontal plane, the surface facing away from the upper die cavity is provided with a first screw blade 71, the first screw blade 71 is raised from the bottom surface of the support fin of the first fin group 7 and is arranged in the direction of the support fin of the second fin group 8 along the screwing-out direction, the surface of the second fin group 8 facing away from the upper die cavity is a horizontal plane, the surface facing toward the upper die cavity is provided with a second screw blade 81, the second screw blade 81 is raised from the upper surface of the support fin of the second fin group 8 and is arranged in the direction of the support fin of the first fin group 7 along the screwing-out direction, the first screw blade 71 and the second screw blade 81 have the largest width at the support fin and gradually decrease along the screwing-out direction, the thread radii and the thread pitches of the first screw blade 71 and the second screw blade 81 are the same, and the screw angle is ninety degrees.
In fig. 4, since the left support rod 61 has a larger volume in the left portion and a smaller volume in the right portion of the core 4 above the plane of the support rod 61, the first support fin group of the left support rod 61 is located at the left side position of the support rod 61 in the outward to inward direction of the core 4, and the second support fin group is located at the other side; the first support fin group of the support rod 61 on the right side in the drawing is located at the right side position of the support rod 61 in the outside-to-inside direction of the core 4, and the second support fin group is located on the other side.
As shown in fig. 5, in the support bar 61 on the left side in fig. 4, the first screw blade 71 and the second screw blade 81 are right-handed threads, the first screw blade 71 starts from the bottom surface of the support fin of the first fin group 7, extends in a right-handed direction by ninety degrees, and has a width gradually decreasing from the bottom surface of the support fin in the direction of turning; the second screw blade 81 starts from the upper surface of the support fin of the second fin group 8, extends ninety degrees in the right-hand direction, and gradually decreases in width in the rotary direction from the upper surface of the support fin.
As shown in fig. 6, in the support bar 61 on the right side in fig. 4, the first screw blade 71 and the second screw blade 81 are provided with left-handed threads, the first screw blade 71 starts from the bottom surface of the support fin of the first fin group 7, extends helically ninety degrees in the left-handed direction, and has a width gradually decreasing from the bottom surface of the support fin in the rotated direction; the second screw blade 81 starts from the upper surface of the support fin of the second fin group 8, extends ninety degrees in the left-hand direction, and gradually decreases in width in the radial direction from the upper surface of the support fin.
As shown in fig. 5, a connecting portion 9 for connecting with a driving motor 94 is provided on a portion of the support rod 61 protruding from the core 4.
As shown in fig. 7, the connection portion 9 includes a connection sleeve 91, a contact rod 92, and an insertion block 93, the end of the support rod 61 located outside the mold core 4 is provided with an insertion hole 611, one end of the connection sleeve 91 is inserted into the insertion hole 611, the other end of the connection sleeve 91 is provided with a driving hole 911 for inserting an output shaft of the driving motor 94, the outer wall of the portion of the connection sleeve 91 inserted into the insertion hole 611 is provided with two sliding holes 912 arranged along the radial direction of the connection sleeve 91, the number of the sliding holes 912 is two, the two sliding holes 912 are located on the same diameter of the connection sleeve 91, the number of the insertion block 93 and the number of the sliding holes 912 are the same, one-to-one correspondence, the insertion block 93 slides in the sliding hole 912, the end of the insertion block 93 close to each other extends into the driving hole 911, the contact rod 92 is connected to the driving hole 911 in a sliding manner, and the end facing the insertion hole 611 is provided with a tapered driving head 921 for pushing the insertion block 93 away, therefore, when the output shaft of the driving motor 94 is in the driving hole 911, the output shaft of the driving motor 94 and the driving hole 911 are clamped along the circumferential direction of the output shaft of the driving motor 94, so that the output shaft and the driving hole can rotate together.
The implementation principle of this application embodiment 1 a pump body casting equipment does: when in use, the lower box body 3 is firstly arranged on the ground, the supporting block 62 on the core 4 is aligned with the corresponding extension groove 63, the side surface of the supporting block 62 is abutted with the side wall of the extension groove 63, then the middle box body 2 is placed on the lower box body 3, the corresponding positioning blocks 51 are aligned along the vertical direction, then the upper case 1 is put on, the corresponding positioning blocks 51 are aligned again in the vertical direction, then the same positioning pin 52 is inserted into the pin hole 53 of the positioning block 51 in the same vertical direction, and the locking nut 54 is screwed down to realize the box combination of the upper box body 1, the middle box body 2 and the lower box body 3, then pouring the molten liquid metal into the casting space from the pouring gate 12, overflowing from the overflow riser 13 after the liquid metal is filled in the casting space, stopping casting, cooling, the positioning pin 52 is removed, the upper tank 1, the middle tank 2 and the lower tank 3 are separated according to the shape of the pump body, and the molded pump body in the casting space is taken out after separation.
Taking out the driving motor 94, inserting the end part of the connecting sleeve 91 with the insert block 93 into the insertion hole 611, inserting the output shaft of the driving motor 94 into the driving hole 911, and inserting the output shaft into the direction of the supporting rod 61 by force, wherein the output shaft of the driving motor 94 pushes the abutting rod 92 to move, the abutting rod 92 pushes the insert block 93 open through the conical driving head 921, the insert block 93 abuts against the inner wall of the insertion hole 611 when being pushed open, the driving motor 94 is started to drive the connecting sleeve 91 to rotate, and the connecting sleeve 91 abuts against the inner wall of the insertion hole 611 through the insert block 93 to drive the supporting rod 61 to rotate when rotating.
When the resistance is great, the inserted block 93 reversely promotes the feeler lever 92 and makes the adapter sleeve 91 skid with bracing piece 61, avoids bracing piece 61 to break, and continuously makes hard to bracing piece 61 direction, makes driving motor 94 output shaft promote feeler lever 92 once more, realizes the common rotation of adapter sleeve 91 and bracing piece 61, with bracing piece 61 intermittent type pivoted mode, makes the inside stirring of core 4 garrulous, disintegrates core 4, in order to conveniently clear up.
Example 2: a casting process of a pump body comprises S001 and sand mixing, wherein the type of sand is selected according to needs, and sand for a mixed core 4 and sand for modeling are selected. S002, core making, namely, making a core by using a pump body product to obtain a core 4; when the core is manufactured, two support rods 61 are placed in a mold cavity of the mold core 4 for molding, the parts of the support rods 61 with support fins are positioned in the mold cavity of the mold core 4, the mounting parts of the support rods 61 and the support blocks 62 are positioned outside the mold cavity of the mold core 4, when the lower mold is molded, the extension grooves 63 are dug out on the outer sides of the positions, corresponding to pump ports of the pump body, of the lower mold cavity 31 to form extension section cavities, and the support blocks 62 are placed at the bottoms of the extension grooves 63. And S003, molding, namely forming corresponding cavities in the lower box body 3, the middle box body 2 and the upper box body 1, and forming a pouring gate 12 and an overflow riser 13 on the upper box body 1. And S004, die assembly and casting are carried out, the upper box body 1, the middle box body 2 and the lower box body 3 are closed, the internal spaces of the three box bodies form a pump body cavity, before the box is closed, the mold core 4 is placed into the pump body cavity, and the metal liquid is poured into the pouring gate 12 and overflows the overflow riser 13. S005, cooling and cleaning sand, pulling the three box bodies away after cooling, taking out the pump body, inserting an output shaft of the driving motor 94 into the driving hole 911, connecting the output shaft with the driving hole in a threaded manner, starting the driving motor 94 to drive the supporting rod 61 to rotate in the direction of screwing the supporting rod 61 out of the mold core 4, and damaging the mold core 4; when the mold core 4 is damaged, acting force towards the interior of the mold core 4 is applied to the driving motor 94, after the insert block 93 and the inner wall of the insertion hole 611 slip, the insert block 93 and the inner wall of the insertion hole 611 tightly abut against each other again, intermittent driving of the supporting rod 61 by the driving motor 94 is achieved, if large resistance is met, the driving motor 94 is moved backwards slightly and then moved forwards, when the driving motor 94 moves backwards, the supporting rod 61 can move outwards towards the mold core 4, part of sand of the mold core 4 is taken out, and after the molded core 4 is damaged, the surface of a pump body and the sand inside the pump body are cleaned. And S006, performing surface treatment, cutting redundant parts, and polishing the surface of the pump body to obtain a finished pump body.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A pump body casting equipment which characterized in that: comprises an upper box body (1), a middle box body (2), a lower box body (3), a mold core (4) and a positioning piece (5), wherein the upper surface of the lower box body (3) is provided with an upper mold cavity, the middle mold cavity is arranged on the middle box body (2), the lower surface of the lower box body (3) is provided with a lower mold cavity (31), the upper box body (1), the middle box body (2) and the lower box body (3) are sequentially covered and locked through the positioning piece (5), the upper mold cavity, the middle mold cavity and the lower mold cavity (31) jointly form a pump body cavity, the mold core (4) is arranged in the pump body cavity through a supporting piece (6), the surface of the upper box body (1) is provided with a sprue gate (12) and an overflow riser (13) which are communicated with the upper mold cavity, the supporting piece (6) comprises a supporting rod (61) and a supporting block (62), the supporting rod (61, the other end of the lower die cavity (31) extends out of the die core (4) and is connected with a supporting block (62), a section of elongated slot (63) is formed in the position, corresponding to the pump opening, of the lower die cavity to form an elongated cavity, and the supporting block (62) is supported in the elongated slot (63).
2. The pump body casting apparatus according to claim 1, wherein: the support fin is arranged on the part, extending into the mold core (4), of the support rod (61), and the support fins are arranged in a plurality and distributed along the length direction of the support rod (61).
3. The pump body casting apparatus according to claim 2, wherein: the supporting fins are distributed on two sides of the supporting rod (61), each side supporting fin is a group and respectively comprises a first fin group (7) and a second fin group (8), fins in the first fin group (7) and the second fin group (8) are alternately distributed at intervals, and the distance between the adjacent supporting fins in the first fin group (7) is the same as that between the adjacent supporting fins in the second fin group (8).
4. A pump body casting apparatus according to claim 3, wherein: the first fin group (7) is positioned on the side of the support rod (61) facing the center of gravity of the core (4), and the second fin group (8) is positioned on the other side; the surface of the first fin group (7) facing the upper die cavity is a horizontal plane, a first helical blade (71) is arranged on the surface back to the upper die cavity, the first helical blade (71) is arranged on the bottom surface of a supporting fin of the first fin group (7) and is arranged in the direction of the supporting fin of the second fin group (8) along the screwing-out direction, the surface of the second fin group (8) facing the upper die cavity is a horizontal plane, a second helical blade (81) is arranged on the surface facing the upper die cavity, the second helical blade (81) is arranged on the upper surface of the supporting fin of the second fin group (8) and is arranged in the direction of the supporting fin of the first fin group (7) along the screwing-out direction, the width of the first helical blade (71) and the width of the second helical blade (81) at the supporting fin are largest and are gradually reduced along the screwing-out direction, the thread radii and the thread pitches of the first helical blade (71) and the second helical blade (81) are the same, the helix angle is ninety degrees.
5. The pump body casting apparatus according to claim 4, wherein: the part of the support rod (61) extending out of the core mould is provided with a connecting part (9) used for being connected with a driving motor (94).
6. The pump body casting apparatus according to claim 5, wherein: the connecting part (9) comprises a connecting sleeve (91), a collision rod (92) and an insert block (93), the end part of the supporting rod (61) positioned outside the mold core (4) is provided with an insertion hole (611), one end of the connecting sleeve (91) is inserted into the insertion hole (611), the other end of the connecting sleeve is provided with a driving hole (911) for inserting an output shaft of the driving motor (94), the outer wall of the part of the connecting sleeve (91) inserted into the insertion hole (611) is provided with a sliding hole (912) which is radially arranged along the connecting sleeve (91), the insert block (93) slides in the sliding hole (912), one end of the insert block (93) close to each other extends into the driving hole (911), the collision rod (92) is connected into the driving hole (911) in a sliding manner, one end towards the insertion hole (611) is provided with a conical driving head (921) which is used for pushing the insert block (93) to be away from each other so that, the part of the output shaft of the driving motor (94) extending into the driving hole (911) is clamped with the driving hole (911) along the circumferential direction of the output shaft of the driving motor (94).
7. The pump body casting apparatus according to claim 1, wherein: the locating piece (5) comprises a locating piece (51) and a locating pin (52), the locating piece (51) is arranged on the side walls of the upper box body (1), the middle box body (2) and the lower box body (3), at least one locating piece is arranged on each side wall, the locating piece (51) of the upper box body (1), the middle box body (2) and the lower box body (3) are distributed along the vertical direction, a pin hole (53) in the vertical direction is formed in the surface of the locating piece (51), and the locating pin (52) sequentially penetrates through the pin hole (53) of the locating piece (51) of the upper box body (1), the middle box body (2) and the lower box body (3) from top to bottom and is locked and fixed through a locking nut.
8. A casting process using the pump body casting apparatus of claim 6, comprising:
s001, sand mixing, namely selecting the type of sand according to needs, and mixing sand for a mold core (4) and sand for modeling;
s002, core making, namely, making a core by using a pump body product to obtain a core (4);
s003, modeling, namely forming corresponding cavities in the lower box body (3), the middle box body (2) and the upper box body (1), and forming a pouring gate (12) and an overflow riser (13) on the upper box body (1);
s004, die assembly and casting are carried out, an upper box body (1), a middle box body (2) and a lower box body (3) are combined into a box, a pump body cavity is formed by the internal spaces of the three box bodies, a mold core (4) is placed into the pump body cavity before the box is combined, and metal liquid is poured into a pouring gate (12) and overflows an overflow dead head (13);
s005, cooling and cleaning sand, pulling the three box bodies away after cooling, taking out the pump body, and cleaning sand on the outer surface and the inner part of the pump body;
s006, performing surface treatment, cutting redundant parts, and grinding and polishing the surface of the pump body to obtain a finished product;
the method is characterized in that: s002, during core making, two support rods (61) are placed into a mold cavity of the mold core (4) for molding, the portions, with support fins, of the support rods (61) are located in the mold cavity of the mold core (4), the connecting portions (9) of the support rods (61) and the support blocks (62) are located outside the mold cavity of the mold core (4), during lower mold molding, elongated grooves (63) are dug out of the outer sides of the positions, corresponding to pump ports of pump bodies, of a lower mold cavity (31), elongated grooves are formed, and the support blocks (62) are placed at the bottoms of the elongated grooves (63).
9. A casting process of a pump body according to claim 8, wherein: and S005, when cooling and sand removing, inserting an output shaft of the driving motor (94) into the driving hole (911) and connecting the output shaft with the driving hole in a threaded manner, and starting the driving motor (94) to drive the supporting rod (61) to rotate in the direction of screwing out the mold core (4).
10. A casting process of a pump body according to claim 9, wherein: the driving motor (94) drives the supporting rod (61) to rotate intermittently.
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| CN202011530293.6A CN112719215B (en) | 2020-12-22 | 2020-12-22 | Pump body casting equipment and casting process |
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| CN202011530293.6A CN112719215B (en) | 2020-12-22 | 2020-12-22 | Pump body casting equipment and casting process |
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| CN112719215B (en) | 2022-06-24 |
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Denomination of invention: A kind of pump body casting equipment and casting process Effective date of registration: 20220811 Granted publication date: 20220624 Pledgee: Ciwu sub branch of Zhejiang Zhuji Rural Commercial Bank Co.,Ltd. Pledgor: ZHUJI CITY HAICHUAN MACHINERY CASTING CO.,LTD. Registration number: Y2022980012400 |
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Denomination of invention: A Pump Body Casting Equipment and Casting Process Effective date of registration: 20230809 Granted publication date: 20220624 Pledgee: Zhejiang Zhuji Rural Commercial Bank Co.,Ltd. Pledgor: ZHUJI CITY HAICHUAN MACHINERY CASTING CO.,LTD. Registration number: Y2023980051413 |
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