CN214392247U

CN214392247U - Casting mold for shifting fork

Info

Publication number: CN214392247U
Application number: CN202120614953.2U
Authority: CN
Inventors: 陆佳明; 陈建江; 何赛涛
Original assignee: Wuxi Guangshuo Precision Machinery Co ltd
Current assignee: Wuxi Guangshuo Precision Machinery Co ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2021-10-15
Anticipated expiration: 2031-03-25

Abstract

The application relates to the field of casting molds, in particular to a casting mold for a shifting fork. It includes the base, be provided with lower die mechanism on the base, lower die mechanism include with base fixedly connected with die holder, be connected with the lower mould on the die holder, lower mould die cavity has been seted up on the lower mould, be provided with upper die mechanism on the base, upper die mechanism includes the upper die base of being connected with the base slides in vertical direction, the sprue gate has been seted up on the upper die base, be connected with the mould on the upper die base, go up the mould and set up the last mould die cavity that communicates each other with the sprue gate, go up mould die cavity and lower mould die cavity and sprue gate intercommunication, the base is provided with side form mechanism, side form mechanism include with the base on the horizontal direction slide be connected with the side die base, be connected with the side form on the side die base, side form die cavity has been seted up on the side form, side form die cavity and lower mould die cavity intercommunication. This application has the effect of being convenient for the foundry goods to get the piece.

Description

Casting mold for shifting fork

Technical Field

The application relates to the field of casting molds, in particular to a casting mold for a shifting fork.

Background

The shifting fork is a component on the automobile gearbox, is connected with a speed changing handle and is positioned at the lower end of the handle and used for shifting the middle speed changing wheel to change the input and output rotating speed ratio. Because the appearance of shift fork is comparatively complicated, the shift fork adopts cast mode to produce and make usually.

The utility model with the publication number of CN204160760U discloses a shifting fork mold. The shifting fork die comprises an upper die holder and a lower die holder, wherein a guide structure is arranged between the upper die holder and the lower die holder, a forming boss is arranged on the upper die holder, a forming female die is arranged on the forming boss, a forming male die matched with the forming female die is arranged on the lower die holder, two identical convex sections are arranged on the forming male die, two convex sections corresponding to the convex sections on the forming male die are arranged on the forming female die, and after the upper die holder and the lower die holder are closed, the forming female die and the forming male die form a closed shifting fork die cavity.

Aiming at the related technologies, the inventor thinks that the forming female die and the forming male die are correspondingly matched with each other, the upper die base is separated from the lower die base after casting is finished, and a shifting fork casting is not easy to take out of the female die.

SUMMERY OF THE UTILITY MODEL

In order to facilitate getting of foundry goods, this application provides a casting mould for shift fork.

The application provides a casting mould for shift fork adopts following technical scheme:

a casting mould for a shifting fork comprises a base, wherein a lower mould mechanism is arranged on the base, the lower mould mechanism comprises a lower mould base fixedly connected with the base, the lower die base is connected with a lower die, a lower die casting cavity is arranged on the lower die, an upper die mechanism is arranged on the base, the upper die mechanism comprises an upper die base connected with the base in a sliding way in the vertical direction, a pouring gate is arranged on the upper die base, the upper die base is connected with an upper die, the upper die is provided with an upper die casting cavity communicated with the pouring gate, the upper die casting cavity is communicated with the lower die casting cavity and the sprue gate, the base is provided with a side die mechanism, the side die mechanism comprises a side die base which is connected with the base in a sliding way in the horizontal direction, a side die is connected on the side die base, and a side die casting cavity is formed in the side die and is communicated with the lower die casting cavity.

By adopting the technical scheme, when the shifting fork is cast, the side die mechanism is driven to move at first to drive the side die holder to move in the horizontal direction, so that the side die is abutted against the lower die, then the upper die mechanism is driven to move to drive the upper die holder to move in the vertical direction, so that the upper die, the lower die and the side die are abutted against each other, the lower die casting cavity, the upper die casting cavity and the side die casting cavity are communicated with each other to form a casting cavity matched with the appearance of the shifting fork, casting liquid is poured into the casting cavity from a pouring gate, and the shifting fork is cast. After casting, the upper die mechanism is driven to move firstly, the upper die base drives the upper die and the lower die to be away from each other, and then the side die mechanism is driven to move, so that the side die base drives the side die and the lower die to be away from each other, the exposed area of a shifting fork casting is increased, and the casting can be taken out of the lower die conveniently.

Optionally, be provided with ejection mechanism on the base, ejection mechanism includes the lifter plate of being connected with base sliding in vertical direction, the rigid coupling has the knockout rod that is used for ejecting the foundry goods on the lifter plate, the vertical setting of knockout rod and slide and wear to establish in the lower mould.

By adopting the technical scheme, after the casting is completed, the upper die mechanism is driven to drive the upper die to be away from the lower die, the side die mechanism is driven to drive the side die to be away from the lower die, the ejector rod is driven to vertically move at the moment, and the ejector rod ejects the shifting fork casting, so that the shifting fork casting is separated from the lower die casting cavity, and the casting is convenient to take out.

Optionally, the side form mechanism further comprises a guide die detachably connected with the side form, the guide die is detachably connected with the side form seat, the guide die is located in the pouring gate during die assembly casting, and a gap is formed between the guide die and the upper die.

By adopting the technical scheme, when the die is closed and cast, the guide die is positioned in the pouring gate, the casting liquid enters the casting cavity from the gap between the guide die and the lower die, and the guide die guides the casting liquid, so that the casting liquid slowly and uniformly enters the casting cavity.

Optionally, the lower die is detachably connected with the lower die base, the upper die is detachably connected with the upper die base, and the side die is detachably connected with the side die base.

By adopting the technical scheme, the lower die and the lower die holder, the upper die and the upper die holder and the side die holder are detachably connected, so that the upper die, the lower die and the side die can be replaced, the casting die can produce castings with different shapes, and the equipment cost is reduced.

Optionally, the upper die base is rotatably connected with a clamping block, and the lower die base is fixedly connected with a clamping shaft for clamping with the clamping block.

By adopting the technical scheme, during casting, after the upper die, the lower die and the side die are closed, the fixture block is rotated to clamp the fixture block and the clamping shaft, so that the upper die and the lower die are tightly attached, the gap between the upper die and the lower die is reduced, and the casting quality is improved.

Optionally, the lower die mechanism includes a lower core fixedly connected to the lower die base, one end of the lower core passes through the lower die and is located in the lower die casting cavity, the upper die mechanism further includes an upper core fixedly connected to the upper die base and arranged corresponding to the lower core, and one end of the upper core passes through the upper die and is located in the upper die casting cavity.

Through adopting above-mentioned technical scheme, through setting up the last core and the lower core that correspond each other, when casting, can form pore structure in the shift fork foundry goods.

Optionally, the lower die is further provided with a plurality of slag ladle cavities, and each slag ladle cavity is communicated with the lower die casting cavity.

By adopting the technical scheme, the casting liquid entering the casting cavity contains impurities, the impurities float on the surface of the casting liquid, and after the casting liquid is filled in the casting cavity, the upper-layer impurity liquid flows into the slag ladle cavity, so that the quality of a casting is improved.

Optionally, the base is further provided with an exhaust mechanism, the exhaust mechanism comprises a lower exhaust die connected with the lower die holder, the lower exhaust die is provided with a plurality of grooves communicated with the slag ladle cavity, the exhaust mechanism further comprises an upper exhaust die connected with the upper die holder, the upper exhaust die is fixedly connected with lugs arranged in one-to-one correspondence with the grooves, and when the die is assembled and cast, the lugs are located in the grooves and have gaps with the groove walls of the grooves.

By adopting the technical scheme, the casting liquid flowing to the slag ladle cavity continuously flows to the groove, and the convex block and the groove are mutually matched to form the air passage, so that the gas in the casting liquid is favorably discharged, and the casting quality is improved.

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

1. the upper die mechanism, the lower die mechanism and the side die mechanism are driven to move in a matched mode, so that the shifting fork is cast, and the side die mechanism is driven to move after the casting is finished, so that the exposed area of a casting can be increased, and the casting can be conveniently taken out of the die;

2. the casting is ejected out of the mold by arranging the ejection mechanism, so that the casting can be conveniently taken out of the mold;

3. the guide die is arranged to guide the casting liquid entering the casting cavity, so that the casting liquid slowly and uniformly enters the casting cavity;

4. through setting up exhaust mechanism, can exhaust in the casting process, improve the quality of foundry goods.

Drawings

Fig. 1 is a schematic structural view of a casting mold for a shift fork.

Fig. 2 is an enlarged view of a portion a of fig. 1.

Fig. 3 is a schematic structural view of the upper die mechanism.

Fig. 4 is a schematic structural view of the lower die mechanism and the side die mechanism.

Fig. 5 is a schematic view of the structure of the guide die when it is positioned in the pouring gate.

Fig. 6 is a structural sectional view of the exhaust mechanism.

Fig. 7 is a mechanism diagram of the ejection mechanism.

Description of reference numerals: 1. a base; 11. a fixing plate; 111. a guide groove; 2. a lower die mechanism; 20. a lower die; 201. a lower die casting cavity; 202. a slag ladle cavity; 203. a pouring channel; 21. a lower die holder; 211. a lower die guide sleeve; 22. a lower mold core; 23. clamping the shaft; 3. an upper die mechanism; 30. an upper die; 301. an upper die casting cavity; 31. an upper die holder; 311. a pouring gate; 312. an upper die guide post; 32. an upper mold core; 33. a clamping block; 4. a side mold mechanism; 40. side mould; 401. a side-die casting cavity; 41. a side die holder; 42. guiding a die; 43. a side-mold cylinder; 5. an ejection mechanism; 51. a lifting plate; 511. a guide block; 52. ejecting the rod; 53. ejecting out the cylinder; 6. an exhaust mechanism; 61. a lower exhaust mold; 611. a groove; 62. an upper exhaust mold; 621. and (4) a bump.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a casting mould for shift fork.

Referring to fig. 1, the casting mold for the shifting fork includes a base 1, and a lower mold mechanism 2, an upper mold mechanism 3, and a side mold mechanism 4 are provided on the base 1. The lower die mechanism 2 comprises a lower die base 21 fixedly connected with the base 1, and the lower die base 21 is fixedly connected with the base 1 through a fixing plate 11. The upper die mechanism 3 includes an upper die base 31 slidably connected to the base 1 in the vertical direction. The side mold mechanism 4 includes a side mold base 41 slidably connected to the base 1 in the horizontal direction.

Referring to fig. 2, one side of the upper die base 31 is rotatably connected with a clamping block 33, the lower die base 21 is fixedly connected with a clamping shaft 23, and the clamping block 33 can be matched with the clamping shaft 23 in a clamping manner.

The driving mechanism of the press machine drives the upper die holder 31 to move in the vertical direction, the upper die holder 31 is abutted to the lower die holder 21, and the fixture block 33 is rotated to enable the fixture block 33 to be in clamping fit with the clamping shaft 23, so that the upper die holder 31 is fixedly connected with the lower die holder 21.

Referring to fig. 3, the upper mold mechanism 3 includes an upper mold 30 connected to the upper mold base 31 by a bolt, the upper mold 30 has an upper mold cavity 301 conforming to the shape of the shift fork, the upper mold base 31 has a gate 311, and the gate 311 is communicated with the upper mold cavity 301. An upper core 32 is fixedly connected to the upper die holder 31.

Referring to fig. 4, the lower die mechanism 2 includes a lower die 20 bolted to a lower die base 21, the lower die 20 having a lower die cavity 201, the lower die cavity 201 communicating with an upper die cavity 301 and a gate 311.

Referring to fig. 4, the side mold mechanism 4 includes a side mold cylinder 43 fixedly connected to the lower mold base 21, the side mold cylinder 43 is horizontally disposed, a piston rod of the side mold cylinder 43 is fixedly connected to the side mold base 41, the side mold base 41 is connected to the side mold 40 through a bolt, a side mold cavity 401 is formed in the side mold 40, and the side mold cavity 401 can communicate with the lower mold cavity 201.

Referring to fig. 3 and 4, the upper die holder 31 is fixedly connected with four upper die guide posts 312, the four upper die guide posts 312 are arranged at four corners of the upper die holder 31, the lower die holder 21 is fixedly connected with four lower die guide sleeves 211 which are arranged in one-to-one correspondence with the upper die guide posts 312, and the upper die guide posts 312 are connected with the lower die guide sleeves 211 in a sliding manner. The lower die holder 21 is fixedly connected with a lower core 22, and the position of the lower core 22 corresponds to the position of the upper core 32.

The piston rod of the side mold driving cylinder 43 extends, so that the side mold base 41 drives the side mold 40 to move in a direction approaching the lower mold 20, and the side mold 40 abuts against the lower mold 20. The upper die mechanism 3 is driven to move, so that the upper die 30 descends to abut against the lower die 20 and the side die 40, the upper die base 31 is guided and limited by arranging the upper die guide column 312 and the lower die guide sleeve 211, and the upper die 30 is better attached to the lower die 20. At this time, the upper mold cavity 301, the lower mold cavity 201, and the side mold cavity 401 communicate with each other to form a casting cavity, and the upper core 32 abuts against the lower core 22 to form a casting core. Casting liquid is poured into the casting cavity from the pouring gate 311 to cast a casting.

Referring to fig. 4 and 5, a guide die 42 is fixedly connected to the side die 40 by bolts, the guide die 42 is also fixedly connected to the side die base 41 by bolts, and when the die is closed and cast, the guide die 42 is positioned in the sprue 311, and a gap exists between the guide die 42 and the side wall of the sprue 311.

Referring to fig. 4, the lower mold 20 further has a plurality of slag ladle chambers 202 formed therein, and each slag ladle chamber 202 is communicated with the lower mold cavity 201.

Referring to fig. 3 and 4, the base 1 is further provided with an exhaust mechanism 6, and the exhaust mechanism 6 includes an upper exhaust mold 62 fixedly connected with the upper mold base 31 and a lower exhaust mold 61 fixedly connected with the lower mold base 21. The lower vent die 61 communicates with the lower die cavity 201 through a runner 203. Referring to fig. 6, the lower mold base 21 is provided with a plurality of grooves 611, the upper exhaust mold 62 is integrally connected with a plurality of protrusions 621, the protrusions 621 and the grooves 611 are arranged in a one-to-one correspondence manner, the protrusions 621 are located in the corresponding grooves 611 during mold closing and casting, and gaps exist between the protrusions 621 and the groove walls of the grooves 611, and the gaps are communicated with each other to form air passages.

The casting liquid enters from the pouring gate 311 and flows into the casting cavity for casting through the gap between the guide die 42 and the side wall of the pouring gate 311, and the guide die 42 can guide the casting liquid to enable the casting liquid to slowly and uniformly enter the casting cavity. The casting liquid flows into the ladle chamber 202 after the casting cavity is filled, and the ladle chamber 202 can contain impurities in the casting liquid. The gas in the casting liquid can be discharged from the gas passage in the gas discharge mechanism 6.

Referring to fig. 7, the base 1 is further provided with an ejection mechanism 5, the ejection mechanism 5 includes an ejection cylinder 53 fixedly connected to the lower die holder 21, the ejection cylinder 53 is vertically arranged, a piston rod of the ejection cylinder 53 is fixedly connected to a lifting plate 51, the fixing plate 11 is provided with a guide groove 111, the lifting plate 51 is fixedly connected to a guide block 511, and the guide block 511 can slide in the guide groove 111. A plurality of vertically arranged ejector rods 52 are fixedly connected to the lifting plate 51. The ejector rod 52 is inserted into the lower mold 20, and when the ejector rod 52 is located at the falling position, one end of the ejector rod 52 away from the lifting plate 51 is flush with the cavity bottom of the lower mold cavity 201, and when the ejector rod 52 is located at the lifting position, one end of the ejector rod 52 away from the lifting plate 51 is located in the lower mold cavity 201.

When casting is performed, the piston rod of the ejection cylinder 53 is driven to extend, the ejection rod 52 is located at the falling position, so that the ejection rod 52 does not affect casting, and after casting is completed, the piston rod of the ejection cylinder 53 is driven to retract, so that the ejection rod 52 rises, and a casting located in the lower die 20 is ejected.

The implementation principle of the casting mould for the shifting fork in the embodiment of the application is as follows: when casting, the piston rod of the side mold cylinder 43 is driven to extend out to drive the side mold mechanism 4 to move, so that the side mold 40 is abutted against and attached to the lower mold 20, the upper mold mechanism 3 is driven to move to drive the upper mold 30 to descend to be abutted against and attached to the lower mold 20 and the side mold 40, the guide mold 42 is located in the sprue gate 311, the upper mold cavity 301, the lower mold cavity 201 and the side mold cavity 401 form a casting cavity, and the upper mold core 32 and the lower mold core 22 form a casting mold core. Casting liquid is poured from the pouring gate 311, the casting liquid fills the casting cavity for casting, the slag ladle cavity 202 can contain impurities in the casting liquid, and the exhaust mechanism 6 exhausts gas in the casting liquid, so that the quality of the casting is improved. After the casting is completed, the upper die 30 and the side die 40 are driven to separate from the lower die 20, the casting is exposed, and the piston rod of the ejection cylinder 53 is driven to retract, so that the ejection rod 52 ejects the casting from the lower die 20.

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

1. A casting mould for a shifting fork comprises a base (1), wherein a lower mould mechanism (2) is arranged on the base (1), the lower mould mechanism (2) comprises a lower mould base (21) fixedly connected with the base (1), a lower mould (20) is connected onto the lower mould base (21), a lower mould casting cavity (201) is formed in the lower mould (20), an upper mould mechanism (3) is arranged on the base (1), the upper mould mechanism (3) comprises an upper mould base (31) connected with the base (1) in a sliding mode in the vertical direction, a pouring gate (311) is formed in the upper mould base (31), an upper mould (30) is connected onto the upper mould base (31), the upper mould (30) is provided with an upper mould casting cavity (301) communicated with the pouring gate (311), the upper mould casting cavity (301) is communicated with the lower mould casting cavity (201) and the pouring gate (311), the method is characterized in that: base (1) is provided with side form mechanism (4), side form mechanism (4) include with base (1) slide on the horizontal direction and be connected with side die holder (41), be connected with side form (40) on side die holder (41), side form die cavity (401) have been seted up on side form (40), side form die cavity (401) and lower mould die cavity (201) intercommunication.

2. The casting mold for a shift fork according to claim 1, wherein: be provided with ejection mechanism (5) on base (1), ejection mechanism (5) include with base (1) lifter plate (51) of sliding connection in vertical direction, the rigid coupling is equipped with ejector rod (52) that are used for ejecting foundry goods on lifter plate (51), ejector rod (52) vertical setting and sliding wear to establish in lower mould (20).

3. The casting mold for a shift fork according to claim 1, wherein: the side die mechanism (4) further comprises a guide die (42) detachably connected with the side die (40), the guide die (42) is detachably connected with the side die base (41), the guide die (42) is positioned in the sprue gate (311) during die assembly casting, and a gap is reserved between the guide die (42) and the upper die (30).

4. The casting mold for a shift fork according to claim 1, wherein: the lower die (20) is detachably connected with the lower die seat (21), the upper die (30) is detachably connected with the upper die seat (31), and the side die (40) is detachably connected with the side die seat (41).

5. The casting mold for a shift fork according to claim 1, wherein: the upper die base (31) is rotatably connected with a clamping block (33), and the lower die base (21) is fixedly connected with a clamping shaft (23) which is used for being clamped with the clamping block (33).

6. The casting mold for a shift fork according to claim 1, wherein: the lower die mechanism (2) comprises a lower die core (22) fixedly connected with the lower die base (21), one end of the lower die core (22) penetrates through the lower die (20) to be located in the lower die casting cavity (201), the upper die mechanism (3) further comprises an upper die core (32) which is fixedly connected with the upper die base (31) and corresponds to the lower die core (22), and one end of the upper die core (32) penetrates through the upper die (30) to be located in the upper die casting cavity (301).

7. The casting mold for a shift fork according to claim 1, wherein: the lower die (20) is further provided with a plurality of slag ladle cavities (202), and each slag ladle cavity (202) is communicated with the lower die casting cavity (201).

8. The casting mold for a shift fork according to claim 7, wherein: the slag ladle slag discharging device is characterized in that an exhaust mechanism (6) is further arranged on the base (1), the exhaust mechanism (6) comprises a lower exhaust die (61) connected with the lower die holder (21), a plurality of grooves (611) communicated with the slag ladle cavity (202) are formed in the lower exhaust die (61), the exhaust mechanism (6) further comprises an upper exhaust die (62) connected with the upper die holder (31), the upper exhaust die (62) is fixedly connected with protruding blocks (621) arranged in one-to-one correspondence with the grooves (611), and when the die is closed and cast, the protruding blocks (621) are located in the grooves (611) and have gaps between the groove walls of the grooves (611).