CN216729402U - Movable jaw shaft hole water glass sand integral sand core combined die - Google Patents
Movable jaw shaft hole water glass sand integral sand core combined die Download PDFInfo
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- CN216729402U CN216729402U CN202220385501.6U CN202220385501U CN216729402U CN 216729402 U CN216729402 U CN 216729402U CN 202220385501 U CN202220385501 U CN 202220385501U CN 216729402 U CN216729402 U CN 216729402U
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Abstract
The utility model discloses a movable jaw shaft hole water glass sand integral sand core combined die which comprises a fixed core box and a split core box, wherein one side surface of the fixed core box and the split core box is an involutory surface, a cavity groove is formed in the involutory surface, the fixed core box and the split core box are involutory to form a die with a cavity, positioning pins and positioning holes are respectively arranged on the involutory surfaces of the fixed core box and the split core box, the positioning pins correspond to the positioning holes, the split core box is combined in multiple sections and comprises a split core box I and a split core box II, the fixed core box and the split core box are involutory and then connected through a fastening device, the die can be used for manufacturing an integral sand core, and the size precision of the sand core is ensured; the integral core rod can be used for the whole sand core, the core rod strength is high, the sand core strength can be ensured, and the sand is prevented from being deformed by the buoyancy of molten steel.
Description
Technical Field
The utility model relates to the technical field of casting dies, in particular to a movable jaw shaft hole water glass sand integral sand core combined die.
Background
The water glass is colorless, odorless and nontoxic, sand mixed by using glass as a binder is called water glass sand, a CO2 blowing method is generally adopted as a water glass sand curing method, and the water glass has no irritation or harmful gas release in the sand mixing, molding, curing and pouring processes. The sodium silicate-bonded sand has good high-temperature deformability, the casting has small tendency of generating cracks, and the cost of the sodium silicate-bonded sand is low, so the sodium silicate-bonded sand is widely applied to the production of steel castings.
The movable jaw is a key part of the jaw crusher, a blank is manufactured by a casting method, the position of a shaft hole is stressed greatly, and the assembly precision is required to be high. The movable jaw shaft hole is slender, and when the sand core is made of the sodium silicate sand, the core cannot be made of single sand due to the poor flowability, poor high-temperature resistance, the need of adding dry sand in the sand core and the like of the sodium silicate sand. When structures such as fillets, rib plates, bosses and the like are arranged in the shaft hole sand core, tamping must be carried out at corners independently, and the phenomenon that sand is bonded to castings due to the fact that sand molds are not dense is avoided, so that the operation of manufacturing the whole sand core is very difficult. The traditional core making method is to divide the sand mould into a plurality of cores, and adopts a mode of separating a core box from the central line of a shaft hole, as shown in figure 3 and figure 4, and then combines a plurality of cores together when the mould is closed.
(1) When the core is manufactured by the method, the sand cores are separated from the central line of the shaft hole, two core bars are needed and are respectively placed in the two sand cores, the size of the core bars cannot be enlarged due to the size limitation of the shaft hole, the strength of the core bars is low, and the sand cores are easy to cause the floating deformation of molten steel;
(2) the combined sand core has poor precision and low compactness, and the casting is easy to have sand sticking defect;
(3) and two sand cores are required to be combined and welded during box closing, so that the production efficiency is reduced.
Disclosure of Invention
In order to solve the technical problems, the utility model particularly provides a movable jaw shaft hole water glass sand integral sand core combined die which can realize integral core making.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the movable jaw shaft hole water glass sand integral sand core combined die comprises a fixed core box and a split core box, wherein one side surface of the fixed core box and the split core box is an involutory surface, a cavity groove is formed in the involutory surface, the fixed core box and the split core box are involutory to form a die with a cavity, positioning pins and positioning holes are respectively arranged on the involutory surfaces of the fixed core box and the split core box, the positioning pins correspond to the positioning holes in position, the split core box is combined in multiple sections and comprises a split core box I and a split core box II, and the fixed core box and the split core box are involutory and then connected through a fastening device.
The fastening device comprises a long bolt and a nut, two ends of the split core box and two ends of the fixed core box are fixedly provided with connecting plates with through holes, the connecting plates of the split core box and the fixed core box are tensioned through the long bolt, two ends of the long bolt are provided with threads, and after the long bolt penetrates through the through holes, the nut is fastened and connected, so that the core box is ensured not to be loosened in the core making process, and the size precision of the sand core is ensured.
Furthermore, the shape of the combined split core box is the same as that of the fixed core box.
The positioning pin and the positioning hole are matched in structure, and the positioning pin can be embedded into the positioning hole for positioning, so that a split core box positioning reference is facilitated, the accurate size of the whole core box after box assembly is ensured, and the accurate whole size of the sand core is ensured.
The split core box is segmented according to actual product requirements, the number of the segments is based on the length which can be controlled by conveniently operating the upper arm of a human body, the segments are based on the structure which is difficult to make cores and tamps, such as the inner corners, the rib plates and the bosses of the core box, the core box is segmented and convenient to make cores, the split core box I and the split core box II are preferably segmented, the split core box III, the split core box IV and the like can be added according to actual production requirements, and the segmented parts of all the split core boxes are combined and then form a die with a cavity together with a fixed core box.
The utility model has the beneficial effects that: the die is suitable for manufacturing the integral sand core, and the size precision of the sand core can be ensured; the integral core rod can be used for the whole sand core, the core rod strength is high, the sand core strength can be ensured, and the sand is prevented from being deformed by the buoyancy of molten steel.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a movable jaw structure;
FIG. 3 is a schematic view of a conventional axial hole pattern core;
fig. 4 is a schematic view of a conventional split core box for the center line of a jaw shaft hole.
1-a fixed core box, 2-a split core box I, 3-a split core box II, 4-a positioning pin, 5-a positioning hole, 6-a long bolt and 7-a connecting plate.
Detailed Description
The movable jaw shaft hole water glass sand integral sand core combined die comprises a fixed core box 1 and a split core box, wherein one side surface of the fixed core box 1 and one side surface of the split core box are matched surfaces, cavity grooves are formed in the matched surfaces, the fixed core box 1 and the split core box are matched to form a die with a cavity, positioning pins 4 and positioning holes 5 are respectively arranged on the two matched surfaces of the fixed core box 1 and the split core box, the positioning pins 4 correspond to the positioning holes 5 in position, the split core box is combined in multiple sections and comprises a split core box I2 and a split core box II 3, and the fixed core box 1 and the split core box are connected through a fastening device after being matched.
The fastening device comprises a long bolt 6 and a nut, two ends of the split core box and the fixed core box 1 are fixedly provided with connecting plates 7 with through holes, the connecting plates 7 of the split core box and the fixed core box 1 are tensioned through the long bolt 6, two ends of the long bolt 6 are provided with threads, and after the connecting plates pass through the through holes, the core box is fastened and connected through the nut, so that the core making process of the core box is not loosened, and the size precision of the sand core is ensured.
Further, the shape of the combined split core box is the same as that of the fixed core box 1.
The positioning pin 4 and the positioning hole 5 are matched in structure, the positioning pin 4 can be embedded into the positioning hole 5 for positioning, a split core box positioning reference is facilitated, the accurate size of the whole core box after box assembling is ensured, and the accurate whole size of the sand core is ensured.
The split core box is segmented according to actual product requirements, the number of the segments is based on the length which can be controlled by conveniently operating the upper arm of a human body, the segments are based on the structures which are not easy to make cores and tamp, such as the internal corners, the rib plates and the bosses of the core box, the core box is segmented and convenient to make cores, the split core box I2 and the split core box II 3 are preferably segmented, the split core box III, the split core box IV and the like can be added according to actual production requirements, and all the segmented parts of the split core box are combined and then form a die with a cavity together with the fixed core box 1.
The improved movable jaw shaft hole core box is utilized to move the jaw shaft hole integral sand core manufacturing process:
the fixed core box 1 is placed on a workbench, the split core box II 3 at the lowest end is placed, the split core box II 3 is positioned with the fixed core box 1 through a positioning pin, and the split core box II 3 and the fixed core box 1 are fastened together through a fastening device; placing a core rod, winding a permeable rope, placing chromium ore sand at a round angle, placing sodium silicate sand layer by layer to compact, and adding some dry filling sand according to the requirement; the split core box I2 is placed, the split core box I2 is positioned with the fixed core box 1 through the positioning pin, and the split core box I2 and the fixed letter box are fastened together through a fastening device; placing a core bone, winding a ventilating rope, placing chromium ore sand at a round angle, placing sodium silicate sand layer by layer to compact, and adding some dry sand according to the requirement; after the core box had been cored, the water glass sand was solidified by blowing CO 2.
The improved core box has the advantages in use:
the core box is disassembled in a split manner, the fixed core box is taken as a reference, the guide positioning is carried out through the positioning pin, the fastening device is fastened, and the core box can reach the precision of the whole core box; the core box is partially disassembled, so that the operation is convenient, and the whole sand core can be manufactured by the sand core with a complex cavity shape; the improved core box has no flash when used for manufacturing a sand core, and the grinding workload at the shaft hole is reduced; the improved core box can realize integral core making for the slender shaft hole, the core frame is of an integral structure, the core frame strength of the sand core is increased, and the deformation of the shaft hole sand core caused by the buoyancy of molten steel can be effectively reduced; the whole core is manufactured, the sand core does not need to be combined and welded, the production efficiency of the casting is improved, and the size precision of the shaft hole is improved.
The product is not only suitable for manufacturing the round sand core, but also suitable for manufacturing the integral sand core of other slender sand cores.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should be construed as the protection scope of the present invention without inventive effort.
Claims (3)
1. The utility model provides a move whole psammitolite assembling die of hubei province shaft hole sodium silicate sand which characterized in that: the split core box comprises a fixed core box and a split core box, wherein one side surface of the fixed core box and the split core box is an involutory surface, a cavity groove is arranged on the involutory surface, a die with a cavity is formed after the fixed core box and the split core box are involutory, positioning pins and positioning holes are respectively arranged on the involutory surfaces of the fixed core box and the split core box, the positioning pins correspond to the positioning holes, the split core box is combined in multiple sections and comprises a split core box I and a split core box II, and the fixed core box and the split core box are involutory and then are connected through a fastening device.
2. The movable jaw shaft hole water glass sand integral sand core combined die as claimed in claim 1, which is characterized in that: the fastening device comprises a long bolt and a nut, two ends of the split core box and the fixed core box are fixedly provided with connecting plates with through holes, the connecting plates of the split core box and the fixed core box are tensioned through the long bolt, two ends of the long bolt are provided with threads, and the split core box and the fixed core box are fastened and connected through the nut after penetrating through the through holes.
3. The movable jaw shaft hole water glass sand integral sand core combined die as claimed in claim 1, which is characterized in that: the shape of the combined split core box is the same as that of the fixed core box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220385501.6U CN216729402U (en) | 2022-02-25 | 2022-02-25 | Movable jaw shaft hole water glass sand integral sand core combined die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220385501.6U CN216729402U (en) | 2022-02-25 | 2022-02-25 | Movable jaw shaft hole water glass sand integral sand core combined die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216729402U true CN216729402U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220385501.6U Active CN216729402U (en) | 2022-02-25 | 2022-02-25 | Movable jaw shaft hole water glass sand integral sand core combined die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216729402U (en) |
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2022
- 2022-02-25 CN CN202220385501.6U patent/CN216729402U/en active Active
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