CN217666313U - Half shell forming die of connecting piece - Google Patents

Abstract

The application discloses a half shell forming die for a connecting piece, which relates to the technical field of die-casting dies and comprises a fixed die and a movable die, wherein the fixed die is provided with a plurality of die cavities for forming half shells, and each die cavity is connected with a plurality of countersunk convex columns for forming countersunk holes; the fixed die is also provided with a main runner and a sprue, the sprue is communicated with the main runner, the main runner is provided with a plurality of first branch runners, and the plurality of first branch runners are communicated with the plurality of cavities in a one-to-one correspondence manner; the movable mould is provided with an inner pouring plate, an inner pressure groove and a plurality of cores used for being matched with the cavity, and the inner pressure groove is used for being matched with the main runner to form a circulation channel for liquid metal to pass through. Through setting up the countersunk convex column, go out the counter sink in the direct forming on half shell, need not follow-up extra counter sink of beating on half shell, improved half shell and punched the problem that easily causes the precision to descend.

Description

Half shell forming die of connecting piece

Technical Field

The application relates to the technical field of die-casting molds, in particular to a connecting piece half-shell forming mold.

Background

The existing splicing goods shelf is generally formed by connecting a plurality of branch pipes or a plurality of branch rods through connecting pieces.

Referring to fig. 1, a connecting piece for connecting bleeder is formed by two half shells 1 through bolted connection's mode concatenation, is equipped with first connecting hole and the second connecting hole that supplies the bleeder to pass through on the connecting piece, and the axis direction of first connecting hole and the axis direction of second connecting hole are perpendicular, and first connecting hole is formed by setting up the concatenation half hole concatenation on two half shells 1 respectively, all is equipped with on every half shell 1 and is used for supplying the countersunk head hole 2 that the bolt passes through.

Usually the counter sink on this kind of connecting piece is all earlier with part die-casting shaping back, and extra processing is punched again, nevertheless because the whole wall thickness of the half shell that splices into the connecting piece is thinner, easily leads to half shell to warp among the punching process for the precision of half shell descends, influences the use of the connecting piece that subsequent concatenation alignment and concatenation formed, remains to be improved.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that the precision drops easily caused in the punching of half shell, this application provides a half shell forming die of connecting piece.

The application provides a half shell forming die of connecting piece adopts following technical scheme:

a half shell forming die of a connecting piece comprises a fixed die and a movable die, wherein the fixed die is provided with a plurality of die cavities for forming a half shell, and each die cavity is connected with a plurality of countersunk convex columns for forming countersunk holes;

the fixed die is further provided with a main runner and a sprue, the sprue is communicated with the main runner, the main runner is provided with a plurality of first sub-runners, and the first sub-runners are communicated with the cavities in a one-to-one correspondence manner;

the movable mould is provided with an inner pouring plate, an inner pressure groove and a plurality of cores used for being matched with the cavity, and the inner pressure groove is used for being matched with the main runner to form a circulation channel for liquid metal to pass through.

Through above-mentioned technical scheme, set up the countersunk head projection, when having the metal liquid in the straight runner to press, metal liquid flows in a plurality of die cavities respectively through sprue and a plurality of first subchannel, when metal liquid fills in the die cavity, metal liquid can bypass the countersunk head projection and form out half shell in the die cavity, and direct forming goes out the countersunk hole on half shell simultaneously, be equivalent to direct integrated into one piece and go out half shell and countersunk hole, need not follow-up extra countersunk hole of beating out on half shell, half shell is punched and is easily caused the problem of precision decline has been improved.

Optionally, the countersunk head convex column comprises a first cylindrical protrusion and a second cylindrical protrusion, the first cylindrical protrusion is fixed at the bottom of the cavity, the first cylindrical protrusion is used for forming a large opening part for accommodating the head of the bolt in the countersunk hole, the second cylindrical protrusion is fixed on the end surface of the movable die deviating from the core, and the second cylindrical protrusion is used for forming a small opening part for accommodating the stud in the countersunk hole.

Through above-mentioned technical scheme, set the countersunk head projection to constitute by first cylinder arch and second cylinder arch, and set up first cylinder arch and second cylinder arch respectively on die cavity and core, in the drawing of patterns in-process first cylinder arch and second cylinder arch only need break away from respectively on big oral area and little oral area can, compare in the mode of overcoming whole follow countersunk hole and breaking away from with the protruding direct integrative setting of first cylinder arch and second cylinder, it is littleer to separately set up the required resistance of overcoming with first cylinder arch and second cylinder, the drawing of patterns is more laborsaving.

Optionally, the first cylindrical protrusion is coaxially provided with a positioning groove for the second cylindrical protrusion to be inserted into.

Through above-mentioned technical scheme, set up positioning groove and supply the protruding embedding of second cylinder for can keep concentric state when connecting between first cylinder arch and the second cylinder arch, improve the precision of the counter sink that the shaping was gone out.

Optionally, a molding groove is formed in the inner pressing groove and used for being matched with the main runner to mold a clamping block for clamping the mechanical arm.

Through above-mentioned technical scheme, in the actual forming process, can form out the material root of connecting each half shell on the sprue, set up the shaping recess on pressing the recess in, can form out the grip block with the sprue cooperation on the material root, can directly get the grip block through the arm clamp during the drawing of patterns and take out each well-formed half shell from the cover half, improve the convenience of drawing of patterns.

Optionally, the movable mould is equipped with a plurality of guide post, the cover half is equipped with the guiding hole that a plurality of confession guide post was inserted.

Through above-mentioned technical scheme, set up guide post and guiding hole, the guiding orientation to laminating between movable mould and the cover half is carried out, the better laminating of movable mould and cover half of being convenient for.

Optionally, the movable mould is equipped with a plurality of locating piece, the cover half is equipped with the constant head tank that a plurality of confession locating piece was embedded.

Through above-mentioned technical scheme, set up locating piece and constant head tank for can be more accurate location when mutually supporting between movable mould and the cover half, improve the precision of the product of final shaping.

Optionally, an exhaust block is arranged at one end of each mold core, which is far away from the internal pressure bump, and an exhaust cavity for the exhaust block to be embedded is arranged at one end of each mold cavity, which is far away from the main flow channel;

when the exhaust block is embedded into the exhaust cavity, an exhaust gap for discharging gas is reserved between the exhaust cavity and the exhaust block.

Through above-mentioned technical scheme, set up exhaust block and exhaust chamber for when movable mould and cover half are laminated, exhaust block and exhaust chamber can mutually support and form the exhaust gap that supplies gas exhaust, are favorable to the better discharge of the gas of die-casting in-process medium-sized intracavity, improve the processingquality of product.

Optionally, an exhaust groove is formed in one end, far away from the movable die, of each exhaust block.

Through above-mentioned technical scheme, set up the air discharge duct, when the exhaust block embedding exhaust chamber, the air discharge duct can form bigger gap between the chamber bottom in chamber in exhaust chamber and supply the better discharge of gas and the liquid metal that partly spills over to hold simultaneously, reduces the possibility that liquid metal blockked up the exhaust gap, further improves the processingquality of product.

In summary, the present application includes at least one of the following beneficial technical effects:

(1) By arranging the countersunk convex columns, countersunk holes are directly formed in the half shells, so that the problem that precision is reduced easily due to punching of the half shells is solved without additionally punching the countersunk holes in the half shells in the follow-up process;

(2) The countersunk convex column is formed by the first cylindrical protrusion and the second cylindrical protrusion, so that resistance required to be overcome during demolding is reduced, and demolding is more labor-saving;

(3) Through set up the shaping recess on the interior pressure recess, can form out the grip block with the sprue cooperation on the material root, can directly get the grip block through the arm clamp during the drawing of patterns and take out each well-formed half shell from the cover half, improve the convenience of drawing of patterns.

Drawings

FIG. 1 is an overall schematic view of a connector for connecting branch pipes.

Fig. 2 is a schematic overall structure diagram of the present embodiment.

Fig. 3 is a schematic diagram of the fixed mold structure in this embodiment.

FIG. 4 is a schematic view of the moving mold structure of the present embodiment.

Fig. 5 is a schematic structural diagram of the movable mold and the stationary mold of the present embodiment.

Reference numerals: 1. half shells; 2. a countersunk hole; 3. moving the mold; 4. fixing a mold; 5. a main flow passage; 6. a sprue; 7. a cavity; 8. a first shunt passage; 9. pressing the groove internally; 10. internally pouring a plate; 11. a core; 12. a second branch flow channel; 13. forming a groove; 14. a first cylindrical protrusion; 15. a second cylindrical projection; 16. countersunk convex columns; 17. a positioning groove; 18. a guide post; 19. a guide hole; 20. positioning blocks; 21. positioning a groove; 22. an exhaust block; 23. an exhaust chamber; 24. an air discharge groove.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses half shell forming die of connecting piece.

Referring to fig. 2 and 3, a movable mold 3 and a stationary mold 4 are included in parallel with each other. The end surface of the fixed die 4, which is used for being matched with the movable die 3, is provided with a main runner 5, a sprue 6 and a plurality of cavities 7. The sprue 6 is in a circular hole shape, the axis direction of the sprue 6 is parallel to the distribution direction of the movable mold 3 and the fixed mold 4, the sprue 6 penetrates through the fixed mold 4 along the axis direction, and the sprue 6 is used for injecting liquid metal. The main runner 5 is in the shape of a long-strip groove, and one end of the main runner 5 in the length direction is communicated with the sprue 6. The plurality of cavities 7 are evenly divided into two groups, and the two groups of cavities 7 are symmetrically distributed on two sides of the length direction of the main runner 5. A first branch runner 8 is arranged between each cavity 7 and the main runner 5.

Referring to fig. 2 and 4, the end surface of the movable mold 3 for matching with the fixed mold 4 is provided with an internal pressure groove 9, an internal pouring plate 10 and a plurality of cores 11. The inner casting plate 10 is in a disc shape, and the axial direction of the inner casting plate 10 is parallel to the distribution direction of the movable mold 3 and the fixed mold 4. The inner pressure groove 9 is in the shape of a long groove, and one end of the inner pressure groove 9 in the length direction is connected with an inner pouring plate 10. The plurality of cores 11 are evenly divided into two groups, and the two groups of cores 11 are symmetrically distributed on two sides of the length direction of the internal pressure groove 9. A second branch runner 12 is arranged between each mold core 11 and the internal pressure groove 9. The bottom of the internal pressure groove 9 is provided with a forming groove 13.

Referring to fig. 3 and 4, when the movable mold 3 and the fixed mold 4 are spliced with each other, the sprue 6 and the inner casting plate 10 are matched with each other to form an injection chamber for injecting liquid metal, the main runner 5 and the inner pressing groove 9 are matched with each other to form a feeding runner communicated with the injection chamber, the plurality of first branched runners 8 and the plurality of second branched runners 12 are matched with each other one by one to form a plurality of branched runners communicated with the feeding runner, and the plurality of cores 11 and the plurality of cavities 7 are matched with each other one by one to form a plurality of molding cavities 7 for molding half shells. In the practical use process, the liquid metal is injected into the feeding runner from the sprue 6, then is distributed to each branch runner in the feeding runner, and then flows into each branch runner and then flows into each forming cavity 7 respectively to form the half shell. The sprue 5 is matched with the internal pressure groove 9 and the branch runners to form a material root for connecting each half shell, the forming groove 13 is matched with the sprue 5 to form a clamping block on the material root, and the half shell and the material root can be clamped by a manipulator when being demoulded on the fixed die 4 conveniently.

Referring to fig. 3 and 4, a first cylindrical protrusion 14 is fixed to the cavity bottom of each cavity 7, and the axial direction of the first cylindrical protrusion 14 is parallel to the axial direction of the sprue 6. And a second cylindrical protrusion 15 is fixed on the end surface of each core 11, which is far away from the movable mold 3, and the axial direction of the second cylindrical protrusion 15 is parallel to the axial direction of the inner casting plate 10. One end of the first cylindrical protrusion 14, which is far away from the cavity bottom of the cavity 7, is coaxially provided with a positioning groove 17 for the second cylindrical protrusion 15 to be embedded into, and the positioning groove 17 is a circular groove.

Referring to fig. 5, in practical use, when the movable mold 3 and the fixed mold 4 are fitted, the second cylindrical protrusion 15 is coaxially inserted into the positioning groove 17 and is matched with the first cylindrical protrusion 14 to form a countersunk convex column 16, and the countersunk convex column 16 is used for being matched with the cavity 7 and the mold core 11 to form a countersunk hole in the half shell. Through the direct and die cavity 7 of countersunk convex column 16 and the 11 cooperations of core, directly go out the counter sink in the shaping on half shell, the effectual condition of causing half shell precision to descend of punching in addition of having avoided.

Referring to fig. 3 and 4, the movable mold 3 is used for being fixed with four guide posts 18 with the terminal surface that the cover half 4 cooperates, four guide posts 18 are located four corners of movable mold 3 respectively, and the axis direction of every guide post 18 all is on a parallel with the distribution direction of movable mold 3 and cover half 4, cover half 4 is used for offering four confession guide post 18 male guiding holes 19 with movable mold 3 complex terminal surface, the axis direction of every guiding hole 19 all is on a parallel with the distribution direction of movable mold 3 and cover half 4, every guiding hole 19 all runs through cover half 4 along the axis direction. The four guide holes 19 are respectively located at four corners of the fixed mold 4. In actual use, the guide posts 18 are matched with the guide holes 19 to guide the movable die 3 and the fixed die 4 to be attached to each other.

Referring to fig. 3 and 4, four positioning blocks 20 are fixed on an end surface of the movable mold 3 for matching with the fixed mold 4, the four positioning blocks 20 are uniformly divided into two groups, two groups of positioning blocks 20 are symmetrically distributed about the internal pressure groove 9, and the four positioning blocks 20 are arranged. The end face of the fixed die 4, which is used for being matched with the movable die 3, is provided with four positioning grooves 21 for embedding the positioning blocks 20. In the practical use process, the four positioning blocks 20 are correspondingly embedded into the four positioning grooves 21 one by one, so that each mold core 11 can be better matched with each mold cavity 7 one by one to form a half shell with higher precision.

Referring to fig. 3 and 4, an exhaust block 22 is integrally connected to one end of each core 11 away from the internal pressure groove 9, and an exhaust groove 24 is formed in the end surface of the exhaust block 22 away from the movable mold 3. An exhaust cavity 23 for embedding an exhaust block 22 is formed in one end, away from the main flow passage 5, of each cavity 7. When the movable mold 3 and the fixed mold 4 are spliced with each other, the exhaust block 22 is embedded into the exhaust cavity 23, and the exhaust block 22 and the exhaust cavity 23 are matched with each other to form an exhaust gap for exhausting gas. During the in-service use, can be gradually with the gaseous exhaust in the die cavity 7 after liquid metal pours into die cavity 7 into, through the exhaust gap, can be better draw the gas in the die cavity 7 out, and exhaust groove 24 can supply gas and the liquid metal that part spilled over to hold, reduces the gas that remains in die cavity 7, reduces the gas pocket on the half shell that the shaping was out, improves the shaping precision of half shell.

The working principle of the embodiment is as follows: when the movable die 3 and the fixed die 4 are mutually attached, the first cylindrical protrusions 14 and the second cylindrical protrusions 15 are spliced to form the countersunk convex columns 16, so that after liquid metal is injected into the cavity 7, half shells with countersunk holes can be directly formed in the cavity 7, and the subsequent precision reduction of the half shells caused by extra punching is reduced.

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: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a half shell forming die of connecting piece, includes cover half (4) and movable mould (3), its characterized in that: the fixed die (4) is provided with a plurality of cavities (7) for forming half shells, and each cavity (7) is connected with a plurality of countersunk convex columns (16) for forming countersunk holes;

the fixed die (4) is further provided with a main runner (5) and a sprue (6), the sprue (6) is communicated with the main runner (5), the main runner (5) is provided with a plurality of first sub-runners (8), and the first sub-runners (8) are communicated with the cavities (7) in a one-to-one correspondence manner;

the movable mold (3) is provided with an inner pouring plate (10), an inner pressure groove (9) and a plurality of cores (11) matched with the cavity (7), and the inner pressure groove (9) is matched with the main runner (5) to form a flow passage for liquid metal to pass through.

2. The mold for molding a connector housing half according to claim 1, wherein: countersunk head projection (16) includes protruding (14) of first cylinder and protruding (15) of second cylinder, protruding (14) of first cylinder is fixed in at the bottom of die cavity (7) chamber, protruding (14) of first cylinder is arranged in the shaping big oral area that supplies the bolt head to hold in the counter sink, protruding (15) of second cylinder is fixed in core (11) and deviates from the terminal surface of movable mould (3), protruding (15) of second cylinder is arranged in the shaping little oral area that supplies the double-screw bolt to hold in the counter sink.

3. The mold for molding a connector housing half according to claim 2, wherein: the first cylindrical protrusion (14) is coaxially provided with a positioning groove (17) for the second cylindrical protrusion (15) to be embedded in.

4. The mold for molding a connector housing half according to claim 1, wherein: and a forming groove (13) is formed in the inner pressure groove (9), and the forming groove (13) is used for being matched with the main runner (5) to form a clamping block for clamping the mechanical arm.

5. The mold for molding a connector housing half according to claim 1, wherein: the movable mold (3) is provided with a plurality of guide posts (18), and the fixed mold (4) is provided with a plurality of guide holes (19) for the guide posts (18) to be inserted.

6. The mold for molding the half shell of the connector according to claim 1, wherein: the movable mold (3) is provided with a plurality of positioning blocks (20), and the fixed mold (4) is provided with a plurality of positioning grooves (21) for embedding the positioning blocks (20).

7. The mold for molding a connector housing half according to claim 1, wherein: an exhaust block (22) is arranged at one end, far away from the inner pressure groove (9), of each mold core (11), and an exhaust cavity (23) for the exhaust block (22) to be embedded is arranged at one end, far away from the main flow passage (5), of each mold cavity (7);

when the exhaust block (22) is embedded into the exhaust cavity (23), an exhaust gap for exhausting gas is reserved between the exhaust cavity (23) and the exhaust block (22).

8. The mold for molding a connector housing half according to claim 7, wherein: and an exhaust groove (24) is formed in one end, far away from the movable die (3), of each exhaust block (22).

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