AU2020427917B2 - Multi-cavity half core box mechanism and method thereof for manufacturing sand core - Google Patents
Multi-cavity half core box mechanism and method thereof for manufacturing sand core Download PDFInfo
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- AU2020427917B2 AU2020427917B2 AU2020427917A AU2020427917A AU2020427917B2 AU 2020427917 B2 AU2020427917 B2 AU 2020427917B2 AU 2020427917 A AU2020427917 A AU 2020427917A AU 2020427917 A AU2020427917 A AU 2020427917A AU 2020427917 B2 AU2020427917 B2 AU 2020427917B2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/06—Core boxes
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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
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Abstract
The present invention relates to a multi-cavity half core box mechanism and a method
thereof for manufacturing sand cores. The multi-cavity half core box mechanism includes a
machine base, where a pallet is embedded above the machine base, left and right core boxes
5 are arranged on left and right sides above the pallet in an opposite manner, a plurality of
parallel molding cavities are formed between the left and right core boxes, and a sand core is
formed inside the individual molding cavity; the left core box is driven by a left lateral
moving mechanism to move leftward and rightward on a left side of a wall surface of the
molding cavity; the right core box is driven by a right lateral moving mechanism to move
10 leftward and rightward on a right side of the wall surface of the molding cavity; each of a
plurality of core rods sequentially passes through the machine base and the pallet from
bottom to top, the core rods being in one-to-one correspondence with the molding cavities,
and a top portion of each core rod extends into the molding cavity; and a core rod holder is
mounted at a bottom of the core rod, a push-and-draw plate is fixedly mounted below the
15 core rod holder, an extraction driving power is mounted on the push-and-draw plate, and the
core rod is driven by the extraction driving power to move upward and downward together
with the push-and-draw plate and the core rod holder. The present invention implements
molding a plurality of sand cores at a time, thereby greatly improving molding efficiency,
reducing manual labor intensity, and ensuring molding accuracy and molding quality.
Description
[00011 The present disclosure relates to the technical field of sand mold casting, and in particular, to a multi-cavity half core box mechanism and a method thereof for manufacturing sand cores.
[00021 Sand mold casting refers to a casting method for manufacturing castings in sand molds, and steel, iron, and most non-ferrous alloy castings can be obtained by using a sand mold casting method.
[00031 A sand core is usually configured to form an inner hole or a cavity of the casting, or some profile portions that prevent molding and cannot easily produce sands. The sand core is secured at a specific position in the sand mold and then is poured. The sand core is contained in the casting after completing pouring. Certainly, the sand core is not completely wrapped, and instead, an opening for sand production is set. Finally, the sand core is cracked, and a hollow cavity portion of the casting is formed.
Technical Problem
[00041 In the related art, a sand core in a complex shape can be molded. However, the molding of the sand core is usually single. Materials for sand core molding are cheap and easily available, but low work efficiency results in high manual labor intensity and waste of production management and operation in enterprises. Technical Solution
[00051 In view of the foregoing disadvantages in the related art, the applicant provides a multi-cavity half core box mechanism with a reasonable structure and a method thereof for manufacturing a sand core, thereby molding a plurality of same or different sand cores at a time, greatly improving work efficiency, reducing manual labor intensity, and ensuring molding accuracy and molding quality.
[00061 The technical solution adopted in the present disclosure is as follows:
[0007] According to an aspect of the disclosure, there is provided a machine base (6), wherein a pallet (7) is embedded above the machine base (6), a left core box (3) and a right core box (1) are disposed in an opposite manner on left and right sides above the pallet (7), a plurality of parallel molding cavities are formed between the left core box (3) and the right core box (1), and a sand core (2) is formed inside the individual molding cavity; the left core box (3) is driven by a left lateral moving mechanism (4) to move leftward and rightward on a left side of a wall surface of the molding cavity; the right core box (1) is driven by a right lateral moving mechanism (12) to move leftward and rightward on a right side of the wall surface of the molding cavity , wherein a structure of the left lateral moving mechanism (4) comprises a slider (44) located at the bottom of the left lateral moving mechanism (4) and sliding relative to the machine base (6), and a support plate (46) is fixedly mounted on a top portion of the slider (44) by using a fastener I (45); and the support plate (46) is an L-shaped structure, a support (42) is fixedly mounted on an inner side surface of the support plate (46), a lateral driving power (41) is fixedly mounted on the support (42), and a heat insulation plate (47), an electrothermal plate (48), and the left core box (3) are sequentially, fixedly mounted on an outer side surface of the support plate (46) by using a fastener II (43), wherein structures of the left lateral moving mechanism (4) and the right lateral moving mechanism (12) are the same; a plurality of core rods (8) are in one-to-one correspondence with the molding cavities, each core rod (8) sequentially passes through the machine base (6) and the pallet (7) from bottom to top, and a top portion of each core rod (8) extends into the corresponding molding cavity; and a core rod holder (9) is mounted at a bottom of the core rod (8), a push-and-draw plate (10) is fixedly mounted below the core rod holder (9), an extraction driving power (11) is mounted on the push-and-draw plate (10), and the core rod (8) moves upward and downward together with the push-and-draw plate (10) and the core rod holder (9) under the action of the extraction driving power (11), wherein a structure of the core rod (8) comprises a rod body (83) of a columnar structure, a bottom end of the rod body (83) extends downward to form a seat (81), a diameter of the seat (81) is greater than a diameter of the rod body (83), and a step 1 (82) is formed at a joint of the seat (81) and the rod body (83); a top portion of the rod body (83) extends upward to form a core head (85), a diameter of the core head (85) is less than the diameter of the rod body (83), and a step11 (84) is formed at a joint of the rod body (83) and the core head (85); and a conical structure (86) is disposed on the core head (85) in an axial direction, and a top end of the core head (85) is a hemispherical structure.
[00081 To further improve the foregoing technical solution:
[00091 A track in a left and right direction is mounted on the machine base at a position outside each of two sides of the pallet, and the left lateral moving mechanism and the right lateral moving mechanism respectively move along the corresponding tracks.
[00101 A middle part of a top portion of the machine base extends upward to form a protrusion, the tracks are symmetrically arranged on two sides of the protrusion in an opposite manner, a middle part of a top portion of the protrusion is provided with a recess running therethrough in a front and back direction, and a lower portion of the pallet is embedded in the recess.
[0011] The pallet is locked in the recess of the machine base by using a fastener, or the pallet moves forward and backward relative to the machine base along the recess.
[00121 The electrothermal plate generates heat under the action of an external power supply.
[00131 A plurality of left core cavities are disposed at intervals on a right side surface of the left core box in a front and back direction, and a left notch is disposed at an intersection of the right side surface and a top surface of the left core box; a plurality of right core cavities are disposed at intervals on a left side surface of the right core box in the front and back direction, and a right notch is disposed at an intersection of the left side surface and a top surface of the right core box; the plurality of left core cavities are in one-to-one correspondence with the right core cavities, and a complete molding cavity is formed by the individual left core cavity and the corresponding right core cavity; and a groove with a concave structure is jointly formed by the left notch and the right notch after the right side surface of the left core box is laminated to the left side surface of the right core box.
[00141 A method for manufacturing sand cores by using the multi-cavity half core box mechanism, including the following steps:
[00151 step 1: moving a left core box rightward driven by a left lateral moving mechanism and moving a right core box leftward driven by a right lateral moving mechanism, until a right side surface of the left core box is laminated to a left side surface of the right core box, to form the molding cavities between the left core box and the right core box; an extraction driving power working to push, through a push-and-draw plate and a core rod holder, a core rod to move upward, until a top portion of the core rod extends into the corresponding molding cavity, and a step II of the core rod is laminated to a bottom surface of a pallet;
[00161 step 2: injecting sands into the molding cavities by using an external sand injection system, until the molding cavities are filled with sands;
[00171 step 3: driving, by an external power supply, an electrothermal plate to work, and generating, by the electrothermal plate, heat, which is transferred to molding sands inside the molding cavities through the left core box and the right core box, to promote the molding sands to be quickly solidified and formed into sand cores;
[00181 step 4: cutting off the power supply to stop working after the electrothermal plate works for a preset period of time;
[00191 step 5: the left lateral moving mechanism and the right lateral moving mechanism working synchronously, to drive the left core box to move leftward and the right core box to move rightward respectively, until both the left core box and the right core box are separated from the sand cores;
[00201 step 6: the extraction driving power working, to pull, through the push-and-draw plate and the core rod holder, the core rod downward, so that a core head located at the top portion of the core rod is separated from the corresponding sand core, and a height of a top end of the core head located at the top portion of the core rod is less than a height of a bottom surface of the pallet;
[0021] step 7: loosening a fastener between the pallet and the machine base, and applying a force to the pallet, to enable the pallet to move along the recess at the top portion of the machine base and finally separate from the recess, where in this process, the sand cores move along with the pallet; and
[00221 step 8: disposing an other pallet in the recess of the machine base, and fixedly securing the other pallet by using a fastener; and repeating step 1 to step 7 to manufacture sand cores of a next cycle. Beneficial Effects
[00231 The present disclosure is compact and reasonable in structure and convenient in operation. A plurality of sand cores are molded at a time by disposing the left core box and the right core box in an opposite manner, thereby greatly improving molding efficiency; a followed pallet is disposed at a bottom of the sand core, thereby removing all of the sand cores molded simultaneously at a time with stable operation and high efficiency; and the left core box and the right core box are respectively driven by the left lateral moving mechanism and the right lateral moving mechanism synchronously, to be close to or far away from each other, thereby effectively ensuring molding accuracy of the sand core, and movement of the left core box, the right core box, or even the core rod is implemented by using a power apparatus, which not only effectively helps improve work efficiency, but also ensures molding effect and reduces manual labor intensity.
[00241 The present disclosure further includes the following advantages:
[00251 The electrothermal plate transfers heat to the sand core through on/off of the external power supply, thereby helping effectively improve a molding and curing speed of the sand core.
[0026] A shape of the molding cavities on opposite surfaces of the left core box and the right core box is set, which not only molds a plurality of sand cores at a time, but also molds the plurality of sand cores in different shapes, thereby improving matching of the sand core during casting, which not only facilitates management and maintenance, but also reduces unnecessary waste.
[00271 FIG. 1 is a schematic structural diagram according to the present disclosure;
[00281 FIG. 2 is a schematic structural diagram of a left lateral moving mechanism according to the present disclosure;
[00291 FIG. 3 is a schematic structural diagram (Embodiment I) between left and right core boxes and a sand core, a pallet according to the present disclosure;
[00301 FIG. 4 is a schematic structural diagram (Embodiment II) between left and right core boxes and a sand core, a pallet according to the present disclosure;
[00311 FIG. 5 is a schematic structural diagram of a core rod according to the present disclosure; and
[00321 FIG. 6 is a schematic structural diagram in a demolding state according to the present disclosure, where
[00331 1. right core box; 2. sand core; 3. left core box; 4. left lateral moving mechanism; 5. track; 6. machine base; 7. pallet; 8. core rod; 9. core rod holder; 10. push-and-draw plate; 11. extraction driving power; 12. right lateral moving mechanism;
[00341 31. left core cavity; 32. left notch
[0035] 41. lateral driving power; 42. support; 43. fastener II; 44. slider; 45. fastener I; 46. support plate; 47. heat insulation plate; 48. electrothermal plate;
[00361 81. seat; 82. step I; 83. rod body; 84. step II; 85. core head; 86. conical structure;
[00371 101. right core cavity; and 102. right notch.
[0038] Specific implementations of the present disclosure are described below with reference to the accompanying drawings.
[0039] As shown in FIG. 1, a multi-cavity half core box mechanism of this embodiment includes a machine base 6, where a pallet 7 is embedded above the machine base 6, a left core box 3 and a right core box 1 are disposed in an opposite manner on left and right sides above the pallet 7, a plurality of parallel molding cavities are formed between the left core box 3 and the right core box 1, a sand core 2 is formed inside the individual molding cavity. A plurality of sand cores 2 are molded at a time by disposing the left core box 3 and the right core box 1 in an opposite manner, thereby greatly improving molding efficiency, and a followed pallet 7 is configured at a bottom of the sand cores 2, so that all of the sand cores 2 molded simultaneously are removed at a time with stable operation and high efficiency. The left core box 3 is driven by a left lateral moving mechanism 4 to move leftward and rightward on a left side of a wall surface of the molding cavity. The right core box 1 is driven by a right lateral moving mechanism 12 to move leftward and rightward on a right side of the wall surface of the molding cavity. A plurality of core rods 8 are in one-to-one correspondence with the molding cavities, each core rod 8 sequentially passes through the machine base 6 and the pallet 7 from bottom to top, and a top portion of each core rod 8 extends into the corresponding molding cavity. A core rod holder 9 is mounted at a bottom of the core rod 8, a push-and-draw plate 10 is fixedly mounted below the core rod holder 9, an extraction driving power 11 is mounted on the push-and-draw plate 10, and the core rod 8 moves upward and downward together with the push-and-draw plate 10 and the core rod holder 9 under the action of the extraction driving power 11.
[00401 The left core box 3 and the right core box 1 are respectively driven by the left lateral moving mechanism 4 and the right lateral moving mechanism 12 synchronously, to be close to or far away from each other, thereby effectively ensuring molding accuracy of the sand core 2, and movement of the left core box 3, the right core box 1, or even the core rod 8 is implemented by using a power apparatus, which not only effectively helps improve work efficiency, but also ensures molding effect and reduces manual labor intensity.
[0041] A track 5 in a left and right direction is mounted on the machine base 6 at a position outside each of two sides of the pallet 7, and the left lateral moving mechanism 4 and the right lateral moving mechanism 12 respectively move along the corresponding tracks 5. The tracks 5 provide a guide function for movement of the left lateral moving mechanism 4 and the right lateral moving mechanism 12, thereby helping ensure the molding accuracy of the sand core 2.
[00421 A middle part of a top portion of the machine base 6 extends upward to form a protrusion, the tracks 5 are symmetrically arranged on two sides of the protrusion in an opposite manner, a middle part of a top portion of the protrusion is provided with a recess running therethrough in a front and back direction, and a lower portion of the pallet 7 is embedded in the recess.
[00431 The pallet 7 is locked in the recess of the machine base 6 by using a fastener, or the pallet 7 moves forward and backward relative to the machine base 6 along the recess.
[00441 Structures of the left lateral moving mechanism 4 and the right lateral moving mechanism 12 are the same.
[00451 As shown in FIG. 2, a structure of the left lateral moving mechanism 4 includes a slider 44 located at the bottom of the left lateral moving mechanism and sliding relative to the machine base 6, and a support plate 46 is fixedly mounted on a top portion of the slider 44 by using a fastener I45. The support plate 46 is an L-shaped structure, a support 42 is fixedly mounted on an inner side surface of the support plate 46, a lateral driving power 41 is fixedly mounted on the support 42, and a heat insulation plate 47, an electrothermal plate 48, and a left core box 3 are sequentially, fixedly mounted on an outer side surface of the support plate 46 by using a fastener II43.
[0046] The electrothermal plate 48 generates heat under the action of an external power supply; and the electrothermal plate 48 transfers heat to the sand core 2 through on/off of the external power supply, thereby helping effectively improve a molding and curing speed of the sand core 2.
[0047] As shown in FIG. 3 and FIG. 4, a plurality of left core cavities 31 are disposed at intervals on a right side surface of the left core box 3 in a front and back direction, and a left notch 32 is disposed at an intersection of the right side surface and a top surface of the left core box 3. A plurality of right core cavities 101 are disposed at intervals on a left side surface of the right core box 1 in the front and back direction, and a right notch 102 is disposed at an intersection of the left side surface and a top surface of the right core box 1. The plurality of left core cavities 31 are in one-to-one correspondence with the right core cavities 101, and a complete molding cavity is formed by the individual left core cavity 31 and the corresponding right core cavity 101; and a groove with a concave structure is jointly formed by the left notch 32 and the right notch 102 after the right side surface of the left core box 3 is laminated to the left side surface of the right core box 1.
[00481 As shown in FIG. 5, a structure of the core rod 8 includes a rod body 83 of a columnar structure, a bottom end of the rod body 83 extends downward to form a seat 81, a diameter of the seat 81 is greater than a diameter of the rod body 83, and a step I82 is formed at a joint of the seat 81 and the rod body 83; a top portion of the rod body 83 extends upward to form a core head 85, a diameter of the core head 85 is less than the diameter of the rod body 83, and a step II84 is formed at a joint of the rod body 83 and the core head 85; and a conical structure 86 is disposed on the core head 85 in an axial direction, and a top end of the core head 85 is a hemispherical structure.
[0049] A shape of the molding cavities on opposite surfaces of the left core box 3 and the right core box 1 is set, which not only molds a plurality of sand cores 2 at a time, as shown in Embodiment I in FIG. 3, but also molds the plurality of sand cores 2 with different shapes, as shown in Embodiment II in FIG. 4, thereby improving matching of the sand core 2 during casting, which not only facilitates management and maintenance, but also reduces unnecessary waste.
[00501 A method adopted in this embodiment for manufacturing sand cores by using a multi-cavity half core box mechanism, including the following steps:
[00511 Step 1: Move a left core box 3 rightward driven by a left lateral moving mechanism 4 and move a right core box 1 leftward driven by a right lateral moving mechanism 12, until a right side surface of the left core box 3 is laminated to a left side surface of the right core box 1, to form molding cavities between the left core box 3 and the right core box 1; an extraction driving power 11 works to push, through a push-and-draw plate 10 and a core rod holder 9, a core rod 8 to move upward, until a top portion of the core rod 8 extends into the corresponding molding cavity, and a step II84 of the core rod 8 is laminated to a bottom surface of a pallet 7.
[00521 Step 2: Inject sands into the molding cavities by using an external sand injection system until the molding cavities are filled with sands.
[00531 Step 3: An external power supply drives the electrothermal plate 48 to work, the electrothermal plate 48 generates heat, which is transferred to molding sands inside the cavities through the left core box 3 and the right core box 1, to promote the molding sands to be quickly solidified and formed into sand cores 2.
[00541 Step 4: Cut off the power supply to stop working after the electrothermal plate 48 works for a preset period of time.
[0055] Step 5: The left lateral moving mechanism 4 and the right lateral moving mechanism 12 work synchronously, to drive the left core box 3 to move leftward and the right core box 1 to move rightward respectively, until both the left core box 3 and the right core box 1 are separated from the sand cores 2.
[00561 Step 6: The extraction driving power 11 works to pull, through the push-and-draw plate 10 and the core rod holder 9, the core rod 8 downward, so that the core head 85 located at the top portion of the core rod 8 is separated from the corresponding sand core 2, and as shown in FIG. 6, a height of a top end of the core head 85 located at the top portion of the core rod 8 is less than a height of a bottom surface of the pallet 7.
[00571 Step 7: Loosen a fastener between the pallet 7 and the machine base 6, and apply a force to the pallet 7, to enable the pallet 7 to move along the recess at the top portion of the machine base 6 and finally separate from the recess, where in this process, the sand cores 2 move along with the pallet 7.
[00581 Step 8: Dispose an other pallet 7 in the recess of the machine base 6, and fixedly secure the other pallet 7 by using a fastener; and repeat step 1 to step 7 to manufacture sand cores 2 of a next cycle.
[00591 The present disclosure implements molding a plurality of identical or different sand cores at a time, thereby greatly improving work efficiency, reducing manual labor intensity, and ensuring molding accuracy and molding quality.
[00601 The reference to any prior art in this specification is not, and should not be taken as, an acknowledgement or any form of suggestion that such prior art forms part of the common general knowledge.
[0061] It will be understood that the terms "comprise" and "include" and any of their derivatives (e.g. comprises, comprising, includes, including) as used in this specification, and the claims that follow, is to be taken to be inclusive of features to which the term refers, and is not meant to exclude the presence of any additional features unless otherwise stated or implied.
[0062] In some cases, a single embodiment may, for succinctness and/or to assist in understanding the scope of the disclosure, combine multiple features. It is to be understood that in such a case, these multiple features may be provided separately (in separate embodiments), or in any other suitable combination. Alternatively, where separate features are described in separate embodiments, these separate features may be combined into a single embodiment unless otherwise stated or implied. This also applies to the claims which can be recombined in any combination. That is a claim may be amended to include a feature defined in any other claim. Further a phrase referring to "at least one of' a list of items refers to any combination of those items, including single members. As an example, "at least one of: a, b, or c" is intended to cover: a, b, c, a-b, a-c, b-c, and a-b-c.
[0063] The description above is used to explain the present disclosure, and is not intended to limit the present invention, the scope defined by the present disclosure may refer to claims, and modifications in any form shall fall within the protection scope of the present disclosure.
Claims (7)
1. A multi-cavity half core box mechanism, comprising a machine base (6), wherein a pallet (7) is embedded above the machine base (6), a left core box (3) and a right core box (1) are disposed in an opposite manner on left and right sides above the pallet (7), a plurality of parallel molding cavities are formed between the left core box (3) and the right core box (1), and a sand core (2) is formed inside the individual molding cavity; the left core box (3) is driven by a left lateral moving mechanism (4) to move leftward and rightward on a left side of a wall surface of the molding cavity; the right core box (1) is driven by a right lateral moving mechanism (12) to move leftward and rightward on a right side of the wall surface of the molding cavity, wherein a structure of the left lateral moving mechanism (4) comprises a slider (44) located at the bottom of the left lateral moving mechanism (4) and sliding relative to the machine base (6), and a support plate (46) is fixedly mounted on a top portion of the slider (44) by using a fastener I (45); and the support plate (46) is an L-shaped structure, a support (42) is fixedly mounted on an inner side surface of the support plate (46), a lateral driving power (41) is fixedly mounted on the support (42), and a heat insulation plate (47), an electrothermal plate (48), and the left core box (3) are sequentially, fixedly mounted on an outer side surface of the support plate (46) by using a fastener11 (43), wherein structures of the left lateral moving mechanism (4) and the right lateral moving mechanism (12) are the same; a plurality of core rods (8) are in one-to-one correspondence with the molding cavities, each core rod (8) sequentially passes through the machine base (6) and the pallet (7) from bottom to top, and a top portion of each core rod (8) extends into the corresponding molding cavity; and a core rod holder (9) is mounted at a bottom of the core rod (8), a push-and-draw plate (10) is fixedly mounted below the core rod holder (9), an extraction driving power (11) is mounted on the push-and-draw plate (10), and the core rod (8) moves upward and downward together with the push-and-draw plate (10) and the core rod holder (9) under the action of the extraction driving power (11), wherein a structure of the core rod (8) comprises a rod body (83) of a columnar structure, a bottom end of the rod body (83) extends downward to form a seat (81), a diameter of the seat (81) is greater than a diameter of the rod body (83), and a step I (82) is formed at a joint of the seat (81) and the rod body (83); a top portion of the rod body (83) extends upward to form a core head (85), a diameter of the core head (85) is less than the diameter of the rod body (83), and a step 11 (84) is formed at a joint of the rod body (83) and the core head (85); and a conical structure (86) is disposed on the core head
(85) in an axial direction, and a top end of the core head (85) is a hemispherical structure.
2. The multi-cavity half core box mechanism according to claim 1, wherein a track (5) in a left and right direction is mounted on the machine base (6) at a position outside each of two sides of the pallet (7), and the left lateral moving mechanism (4) and the right lateral moving mechanism (12) respectively move along the corresponding tracks (5).
3. The multi-cavity half core box mechanism according to claim 2, wherein a middle part of a top portion of the machine base (6) extends upward to form a protrusion, the tracks (5) are symmetrically arranged on two sides of the protrusion in an opposite manner, a middle part of a top portion of the protrusion is provided with a recess running therethrough in a front and back direction, and a lower portion of the pallet (7) is embedded in the recess.
4. The multi-cavity half core box mechanism according to claim 3, wherein the pallet (7) is locked in the recess of the machine base (6) by using a fastener, or the pallet (7) moves forward and backward relative to the machine base (6) along the recess.
5. The multi-cavity half core box mechanism according to claim 4, wherein the electrothermal plate (48) generates heat under the action of an external power supply.
6. The multi-cavity half core box mechanism according to claim 1, wherein a plurality of left core cavities (31) are disposed at intervals on a right side surface of the left core box (3) in a front and back direction, and a left notch (32) is disposed at an intersection of the right side surface and a top surface of the left core box (3); a plurality of right core cavities (101) are disposed at intervals on a left side surface of the right core box (1) in the front and back direction, and a right notch (102) is disposed at an intersection of the left side surface and a top surface of the right core box (1); the plurality of left core cavities (31) are in one-to-one correspondence with the right core cavities (101), and a complete molding cavity is formed by the individual left core cavity (31) and the corresponding right core cavity (101); and a groove with a concave structure is jointly formed by the left notch (32) and the right notch (102) after the right side surface of the left core box (3) is laminated to the left side surface of the right core box (1).
7. A method for manufacturing sand cores by using the multi-cavity half core box mechanism according to claim 1, comprising the following steps: step 1: moving the left core box (3) rightward driven by the left lateral moving mechanism (4) and moving the right core box (1) leftward driven by the right lateral moving mechanism (12), until the right side surface of the left core box (3) is laminated to the left side surface of the right core box (1), to form the molding cavities between the left core box
(3) and the right core box (1); the extraction driving power (11) working to push, through the push-and-draw plate (10) and the core rod holder (9), the core rod (8) to move upward, until the top portion of the core rod (8) extends into the corresponding molding cavity, and the step 11 (84) of the core rod (8) is laminated to a bottom surface of the pallet (7); step 2: injecting sands into the molding cavities by using an external sand injection system, until the molding cavities are filled with sands; step 3: driving, by the external power supply, the electrothermal plate (48) to work, and generating, by the electrothermal plate (48), heat, which is transferred to molding sands inside the molding cavities through the left core box (3) and the right core box (1), to promote the molding sands to be quickly solidified and formed into the sand cores (2); step 4: cutting off the power supply to stop working after the electrothermal plate (48) works for a preset period of time; step 5: the left lateral moving mechanism (4) and the right lateral moving mechanism (12) working synchronously, to drive the left core box (3) to move leftward and the right core box (1) to move rightward respectively, until both the left core box (3) and the right core box (1) are separated from the sand cores (2); step 6: the extraction driving power (11) working, to pull, through the push-and-draw plate (10) and the core rod holder (9), the core rod (8) downward, so that the core head (85) located at the top portion of the core rod (8) is separated from the corresponding sand core (2), and a height of a top end of the core head (85) located at the top portion of the core rod (8) is less than a height of a bottom surface of the pallet (7); step 7: loosening a fastener between the pallet (7) and the machine base (6), and applying a force to the pallet (7), to enable the pallet (7) to move along the recess at the top portion of the machine base (6) and finally separate from the recess, wherein in this process, the sand cores (2) move along with the pallet (7); and step 8: disposing an other pallet (7) in the recess of the machine base (6), and fixedly securing the other pallet (7) by using a fastener; and repeating step 1 to step 7 to manufacture sand cores (2) of a next cycle.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010697403.1A CN111730026B (en) | 2020-07-20 | 2020-07-20 | Multi-cavity half core box mechanism and method for manufacturing sand core by using same |
| CN2020106974031 | 2020-07-20 | ||
| PCT/CN2020/140193 WO2022016810A1 (en) | 2020-07-20 | 2020-12-28 | Multi-cavity half core box mechanism and method for manufacturing sand core using multi-cavity half core box mechanism |
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| CN111730026B (en) * | 2020-07-20 | 2021-06-01 | 无锡职业技术学院 | Multi-cavity half core box mechanism and method for manufacturing sand core by using same |
| CN114888240A (en) * | 2022-05-19 | 2022-08-12 | 迅驰工业(银川)有限公司 | Manufacturing method of sand core with modular core head |
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| GB2335876A (en) * | 1998-04-01 | 1999-10-06 | Ae Goetze Chasseneuil | Casting apparatus comprising two half core moulds |
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| JPS6163337A (en) * | 1984-09-06 | 1986-04-01 | Naniwa Seisakusho:Kk | Vertically split molding and adhering machine for casting mold having gap part |
| CN100584483C (en) * | 2008-07-11 | 2010-01-27 | 苏州明志科技有限公司 | Cold box foundry mold |
| CN102059322B (en) * | 2009-11-13 | 2012-12-19 | 广西玉柴机器股份有限公司 | Die and method for casting cold core box of full-enclosed diesel engine block sand core |
| JP2012218057A (en) * | 2011-04-13 | 2012-11-12 | Toyota Motor Corp | Casting core and method of manufacturing the same |
| CN201979037U (en) * | 2011-04-26 | 2011-09-21 | 芜湖聚达汽车零部件有限公司 | Core rod casting machine |
| KR101280013B1 (en) * | 2013-05-14 | 2013-06-28 | 에스디(주) | Core assembly for under-cut relieving of elbow injection mold |
| CN203778699U (en) * | 2014-05-07 | 2014-08-20 | 广西玉柴机器股份有限公司 | Core ejection device for fine and small sand core |
| CN204934513U (en) * | 2015-08-25 | 2016-01-06 | 山东浩顺机械有限公司 | A kind of coated sand technology core producing device |
| DE202015104866U1 (en) * | 2015-09-14 | 2015-11-25 | GTP Schäfer Gießtechnische Produkte GmbH | Core box for producing a feeder in a core shooter |
| CN106964764A (en) * | 2017-03-24 | 2017-07-21 | 新兴铸管股份有限公司 | Water-cooling type centrifugal casting pile pipe core box |
| CN206854593U (en) * | 2017-06-15 | 2018-01-09 | 中国第一汽车股份有限公司 | A kind of semi-mechanization self-hardening sand core box |
| CN208341656U (en) * | 2018-06-27 | 2019-01-08 | 山西中条山机电设备有限公司 | A kind of cylinder block group core mould |
| CN109290529B (en) * | 2018-12-07 | 2024-07-09 | 东风商用车有限公司 | Positioning chaplet for casting and application process thereof, and combined core |
| CN209550528U (en) * | 2019-01-21 | 2019-10-29 | 都江堰市星原机械设备有限公司 | A kind of overturning shell core machine being convenient to clean |
| CN110877095B (en) * | 2019-09-06 | 2024-03-26 | 江苏力源金河铸造有限公司 | Processing technology of engineering machinery end cover casting |
| CN111730026B (en) * | 2020-07-20 | 2021-06-01 | 无锡职业技术学院 | Multi-cavity half core box mechanism and method for manufacturing sand core by using same |
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- 2020-12-28 AU AU2020427917A patent/AU2020427917B2/en active Active
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| GB2335876A (en) * | 1998-04-01 | 1999-10-06 | Ae Goetze Chasseneuil | Casting apparatus comprising two half core moulds |
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| CN111730026B (en) | 2021-06-01 |
| AU2020427917A1 (en) | 2022-02-03 |
| WO2022016810A1 (en) | 2022-01-27 |
| CN111730026A (en) | 2020-10-02 |
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