CN215614989U

CN215614989U - Commercial vehicle wheel hub low pressure mould

Info

Publication number: CN215614989U
Application number: CN202122213781.0U
Authority: CN
Inventors: 叶珍; 罗惠敏; 朱大智; 高会超; 汪向前; 郁世豪; 董志鑫
Original assignee: Baoding Lizhong Wheel Manufacturing Co ltd
Current assignee: Baoding Lizhong Wheel Manufacturing Co ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-01-25
Anticipated expiration: 2031-09-13

Abstract

The utility model provides a low-pressure die for a hub of a commercial vehicle, which comprises a lower template, an upper template, a lower die, a sprue component and an upper die, wherein the lower template is fixedly connected with the upper template; the lower template is fixedly connected with the machine table and is provided with a through center hole; the upper template is arranged above the lower template and is connected with the machine table; the lower die is fixedly arranged on the upper end surface of the lower die plate, an annular water cooling block is arranged in the lower die, and a sprue hole is formed in the middle of the lower die; the gate component comprises a ceramic gate, a sheath and a pressure plate; the upper die is fixedly connected with the lower end face of the upper die plate, an upper die core is fixedly arranged at the middle position of the upper die, a shunting cone facing a sprue hole is clamped at the middle position of the upper die core, and a die cavity is formed among the upper die, the upper die core, the shunting cone and the lower die. The commercial vehicle hub low-pressure die provided by the utility model can realize stable filling and accurate cooling of the commercial vehicle hub, and meets the performance requirements of the hub.

Description

Commercial vehicle wheel hub low pressure mould

Technical Field

The utility model belongs to the technical field of commercial vehicle hub production, and particularly relates to a commercial vehicle hub low-pressure die.

Background

The manufacturing method of the aluminum alloy hub comprises three methods: gravity casting, forging and low-pressure precision casting. The low-pressure die is a packaging process method which injects packaging materials into the die at very low injection pressure and quickly solidifies and molds, and the casting mode has the advantages of good formability, clear outline, uniform density and smooth surface, can achieve high strength, light weight and cost control, has the yield of more than nine percent, and is a mainstream manufacturing method of the high-quality aluminum alloy hub.

Along with the development of the aluminum alloy hub die technology, the structure of a product die is more and more complex, and more severe technological requirements are provided for the die. Under the more and more complicated product flange structure, in order to realize sequential solidification, the requirement of the solidification process condition of the casting flange part is higher. The mold structure is more and more complicated, the assembly process is more and more tedious, the more assembly parts are, and the higher the tolerance accumulation is. Different molds are designed according to different shapes and performances of the wheel hub, so that the wheel hub can be stably filled and cooled, and the performance requirements of the wheel hub for the automobile in the market are met.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a low-pressure die for a hub of a commercial vehicle, and aims to realize stable filling and cooling of the hub of the commercial vehicle so as to meet the performance requirements of the hub.

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides a commercial car wheel hub low pressure mould, includes:

the lower template is fixedly connected with the machine table and is provided with a through center hole;

the upper template is arranged above the lower template and is connected with the machine table;

the lower die is fixedly arranged on the upper end surface of the lower die plate, an annular water cooling block is arranged in the lower die, and a sprue hole is formed in the middle of the lower die;

the sprue component comprises a ceramic sprue which penetrates through the central hole of the lower template and is arranged in the sprue hole, a sheath which is fixedly connected to the lower die and is sleeved on the ceramic sprue, and a pressing plate which is connected to the lower end of the sheath and is used for fixing the ceramic sprue;

the mould, go up the mould with terminal surface fixed connection under the cope match-plate pattern, go up the mould with between the lower mould through the mutual butt of step face, it is equipped with the mold core to go up the fixed mold core that is equipped with of mold core intermediate position, it has the orientation to go up mold core intermediate position joint the reposition of redundant personnel awl of runner hole, go up the mould the mold core go up the mold core reposition of redundant personnel awl with constitute the die cavity jointly between the lower mould, the reposition of redundant personnel awl is used for pressing solid filter screen and makes aluminium liquid reposition of redundant personnel.

In a possible implementation manner, the lower die, the upper die core and the spreader cone are all provided with cooling holes communicated with the outside.

In a possible realization mode, the annular water cooling block is internally surrounded by a regular hexagonal water cooling channel communicated with the outside, and the water cooling channel is used for enhancing the cooling of the target position of the casting.

In a possible implementation manner, a protrusion is arranged at the bottom end of the sprue spreader, and the protrusion extends into the cavity and is centered on the ceramic gate.

In a possible implementation manner, the upper end surface of the lower template is provided with a first positioning groove, the lower end surface of the upper template is provided with a second positioning groove, the lower end of the lower die is located in the first positioning groove, and the upper end of the upper die is located in the second positioning groove.

In a possible implementation manner, a supporting plate is fixedly arranged on the upper end surface of the lower template, the supporting plate is located between the lower template and the upper template, a plurality of guide pillars are arranged at the top end of the supporting plate, and the upper template is provided with through holes corresponding to the guide pillars one to one.

In some embodiments, a casting ejection mechanism is further included, the casting ejection mechanism comprising:

the ejector rod plate is arranged at a distance from the upper die plate and is positioned above the upper die plate, and the ejector rod plate has lifting freedom degree and is driven by an oil cylinder to act;

and the ejector rods are fixed on the ejector rod plate and respectively penetrate through the upper die and the upper die core and are communicated with the die cavity.

Illustratively, the casting demolding mechanism further comprises:

and the positioning screws are in threaded connection with the ejector rod plate, correspond to the guide pillars one by one and are used for supporting the ejector rod plate and positioning the ejector rods.

Illustratively, the upper end face of cope match-plate pattern is equipped with the connecting plate, the cope match-plate pattern passes through the connecting plate is connected with the board.

For example, a plurality of first U-shaped grooves are formed in two ends of the lower template, a plurality of second U-shaped grooves are formed in the upper end face of the connecting plate, and a abdicating groove is formed below the second U-shaped grooves.

In the implementation mode, the upper template and the lower template are both fixed with the machine table, and the upper template is driven by the machine table to have lifting freedom; the lower die, the upper die core and the spreader cone are combined to form a cavity, and the annular water cooling block fixed in the lower die is used for cooling a specific target position so as to ensure the performance strength of a casting; in the pouring gate component, a ceramic pouring gate is combined and fixed by a sheath and a pressure plate and plays a role in protection; the shunting cone is used for pressing the filter screen and has a shunting effect when the molten aluminum is filled, so that the molten aluminum is stably filled. Compared with the prior art, the commercial vehicle wheel hub low-pressure die can realize stable filling and accurate cooling of the commercial vehicle wheel hub, and meets the performance requirements of the wheel hub.

Drawings

FIG. 1 is a schematic structural diagram of a low-pressure mold for a commercial vehicle hub according to an embodiment of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic bottom view of the low-pressure mold for the hub of the commercial vehicle shown in FIG. 1;

fig. 4 is a schematic perspective view of the low-pressure mold for the hub of the commercial vehicle shown in fig. 1.

Description of reference numerals:

1. a lower template; 2. mounting a template; 3. a lower die; 4. a gate assembly; 5. an upper die; 6. a cavity; 7. a cooling hole; 8. a casting demolding mechanism;

11. a central bore; 12. a support plate; 13. a guide post; 14. a first positioning groove; 15. a first U-shaped groove; 16. a groove; 21. a second positioning groove; 22. a connecting plate; 23. a through hole; 31. an annular water cooling block; 32. a sprue hole; 33. a first annular groove; 41. a ceramic gate; 42. a sheath; 43. pressing a plate; 51. an upper mold core; 52. a spreader cone; 53. a second annular groove; 81. a top rod; 82. a mandril is arranged on the plate; 83. a mandril lower plate; 84. positioning a screw rod; 85. a guide post; 86. a guide sleeve;

221. a second U-shaped groove; 222. a yielding groove; 311. a water-cooling channel; 521. and (4) protruding.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 and fig. 2 together, a low-pressure mold for a hub of a commercial vehicle according to the present invention will now be described. The commercial vehicle hub low-pressure die comprises a lower die plate 1, an upper die plate 2, a lower die 3, a pouring gate assembly 4 and an upper die 5; the lower template 1 is fixedly connected with a machine table, and the lower template 1 is provided with a through center hole 11; the upper template 2 is arranged above the lower template 1, and the upper template 2 is connected with the machine table; the lower die 3 is fixedly arranged on the upper end surface of the lower die plate 1, an annular water cooling block 31 is arranged in the lower die 3, and a sprue hole 32 is formed in the middle of the lower die 3; the gate component 4 comprises a ceramic gate 41 penetrating through the central hole 11 and arranged in the gate hole 32, a sheath 42 fixedly connected to the lower die 3 and sleeved on the ceramic gate 41, and a pressing plate 43 connected to the lower end of the sheath 42 and used for fixing the ceramic gate 41; go up mould 5 and 2 lower terminal surfaces fixed connection of cope match-plate pattern, go up between mould 5 and the lower mould 3 through the step face mutual butt, go up the fixed mold core 51 that is equipped with of mould 5 intermediate position, go up the mold core 51 intermediate position joint and have the reposition of redundant personnel awl 52 towards runner hole 32, go up mould 5, go up the mold core 51, reposition of redundant personnel awl 52 and constitute die cavity 6 between the lower mould 3 jointly, reposition of redundant personnel awl 52 is used for pressing the solid filter screen and makes aluminium liquid reposition of redundant personnel.

In the low-pressure die for the hub of the commercial vehicle, the upper die plate 2 and the lower die plate 1 are both fixed with a machine table, and the upper die plate 2 is driven by the machine table to have a lifting degree of freedom; the lower die 3, the upper die 5, the upper die core 51 and the sprue spreader 52 are combined to form a die cavity 6, and the annular water cooling block 31 fixed in the lower die 3 is used for cooling a specific target position so as to ensure the performance strength of a casting; in the gate component 4, the ceramic gate 41 is fixed and protected by the combination of the sheath 42 and the pressure plate 43; the shunting cone 52 is used for pressing the filter screen and has a shunting effect when the molten aluminum is filled, so that the molten aluminum is stably filled.

The specific action flow of this commercial car wheel hub low pressure mould does, cope match-plate pattern 2 and last mould 5 are from the platform whereabouts, go up mould 5 and the cooperation of 3 butts of lower mould, accomplish the compound die action, and aluminium liquid gets into die cavity 6 through the filter screen by ceramic runner 41, is shunted by spreader cone 52, makes aluminium liquid steadily fill the type in die cavity 6, treats the aluminium liquid solidification back in the die cavity 6, and wheel hub rises along with last mould 5, cope match-plate pattern 2 and board, accomplishes the die sinking action, then separates wheel hub.

Compared with the prior art, the commercial vehicle wheel hub low-pressure die can realize stable filling and accurate cooling of the commercial vehicle wheel hub, and meets the performance requirements of the wheel hub.

In some embodiments, referring to fig. 2, the lower die 3, the upper die 5 and the tap cone 52 are each provided with cooling holes 7 communicating with the outside.

In this embodiment, one end of the cooling hole 7 is communicated with the outside, and the other end is close to the cavity 6, so as to realize the cooling effect on the aluminum liquid in the cavity 6.

Alternatively, the cooling holes 7 may be connected with heat dissipation rods, which may be copper rods, and the heat dissipation rods are exposed on the surfaces of the lower die 3, the upper die 5, the upper die core 51 and the spreader cones 52.

Optionally, the cooling holes 7 are communicated with water pipes or air pipes, and are introduced into the cooling holes 7 through water cooling or air cooling so as to accelerate the cooling speed.

Specifically, the lower end surface of the lower die 3 is provided with a first annular groove 33 in the circumferential direction of the gate hole 32, the upper end surface of the upper die 5 is provided with a second annular groove 53 in the circumferential direction of the upper die core 51, the first annular groove 33 is communicated with the outside through the central hole 11, and the upper die plate 2 is provided with an opening for communicating the second annular groove 53 with the outside. Through the arrangement of the first annular groove 33, the second annular groove 53, the central hole 11 and the opening, the internal cavity 6 is easy to exchange heat with the outside, and a water pipe or an air pipe can be conveniently led in.

In some possible implementations, referring to fig. 2, the annular water cooling block 31 is internally surrounded by a regular hexagonal water cooling passage 311 communicating with the outside, and the water cooling passage 311 is used for enhancing cooling of the casting target position.

In this embodiment, through setting up hexagonal water-cooling channel 311 to strengthen the cooling of the important position of foundry goods, guarantee the performance intensity of foundry goods, hexagonal water-cooling channel 311 is different apart from 6 distances of die cavity, cools off with different rates, satisfies the performance intensity demand of foundry goods. Specifically, an annular water-cooling block 31 is embedded in the lower mold 3 and constitutes a part of the cavity wall.

In some possible implementations, the above-mentioned diverter cone 52 is configured as shown in fig. 2. Referring to fig. 2, the bottom end of the tap cone 52 is provided with a protrusion 521, and the protrusion 521 extends into the cavity 6 and is centered on the ceramic gate 41.

In this embodiment, the protrusion 521 at the bottom end of the diverging cone 52 faces the ceramic gate 41 to achieve the diverging of the aluminum liquid.

Specifically, there is a fixed plate at the top of the tap cone 52 through threaded connection, the lower end of the fixed plate abuts against the upper end face of the upper mold core 51, a boss is arranged at the bottom of the tap cone 52, an open slot matched with the boss is arranged on the upper mold core 51, and the tap cone 52 is fixed in the middle of the upper mold core 51 through the combination of the fixed plate and the boss.

In some possible implementations, referring to fig. 2, the lower mold plate 1 is provided with a first positioning groove 14 on the upper end surface, the upper mold plate 2 is provided with a second positioning groove 21 on the lower end surface, the lower end of the lower mold 3 is located in the first positioning groove 14, and the upper end of the upper mold 5 is located in the second positioning groove 21.

In this embodiment, the lower end surface and the bottom side surface of the first positioning groove 14 and the lower mold 3 are abutted to position the lower mold 3, and the upper end surface and the top side surface of the upper mold 5 are abutted to position the upper mold 5 through the second positioning groove 21. The lower die 3 and the upper die 5 are respectively fixed with the lower die plate 1 and the upper die plate 2 through bolts.

In some possible implementations, referring to fig. 4, a supporting plate 12 is fixedly disposed on the upper end surface of the lower template 1, the supporting plate 12 is located between the lower template 1 and the upper template 2, a plurality of guide pillars 13 are disposed on the top end of the supporting plate 12, and through holes 23 corresponding to the plurality of guide pillars 13 are disposed on the upper template 2.

In this embodiment, the guide posts 13 are matched with the through holes 23, and are used for positioning the relative positions of the upper template 2 and the lower template 1, so that the upper die 5 is completely matched with the lower die 3. The supporting plate 12 is also used to limit the relative position of the upper template 2 and the lower template 1, so as to prevent the machine station from driving the lower template 1 to move over and damage the mold. Specifically, two support plates 12 are arranged and respectively located at two sides of the lower template 1, and two guide posts 13 are respectively arranged at two ends of each support plate 12 so as to accurately position and strengthen the support.

In some possible implementations, referring to fig. 2, a casting demolding mechanism 8 is further included, the casting demolding mechanism 8 including a ram plate and a plurality of rams 81: the ejector rod plate and the upper template 2 are arranged at intervals and are positioned above the upper template 2, and the ejector rod plate has a lifting freedom degree and is driven by an oil cylinder to act; the ejector rods 81 are fixed on the ejector rod plate, and the ejector rods 81 respectively penetrate through the upper die 5 and the upper die core 51 and are communicated with the die cavity 6.

In this embodiment, after the casting is formed, the machine station controls the mold opening, the oil cylinder extends out to drive the ejector plate to move, so as to drive the ejector rod 81 to push the casting, and the casting is smoothly ejected and dropped from the upper mold 5.

Specifically, the ejector rod plate is divided into an ejector rod upper plate 82 and an ejector rod lower plate 83 which are fixed with each other, a limiting portion is arranged at the upper end of the ejector rod 81, a containing cavity containing the limiting portion is formed in the upper end face of the ejector rod lower plate 83, the lower end face of the containing cavity is abutted to the lower end face of the limiting portion of the ejector rod 81 to fix the ejector rod 81, and the ejector rod 81 penetrates through the bottom of the containing cavity.

Specifically, the ejector pins 81 are divided into side ejector pins and center ejector pins, the side ejector pins are circumferentially arranged to penetrate the upper die 5, the center ejector pins are circumferentially arranged to penetrate the upper die core 51, specifically, the number of the side ejector pins is 10, the number of the center ejector pins is 6, and through the arrangement of the side ejector pins and the center ejector pins, the application force is uniform, so that the casting is pushed out without damaging the casting.

In some possible implementations, referring to fig. 1 and 2, the casting demolding mechanism 8 further includes a plurality of positioning screws 84, the positioning screws 84 are all in threaded connection with the ejector plate, the positioning screws 84 correspond to the guide pillars 13 one by one, and the positioning screws 84 are used for supporting the ejector plate and positioning the ejector 81.

In this embodiment, the positioning screw 84 abuts against the guide post 13 to support the upper ejector plate 82 and the lower ejector plate 83 and position the ejector 81 so that the ejector 81 is located on the edge surface of the cavity 6, and the ejector 81 does not interfere with the molding and appearance of the hub. Specifically, the position of the jack 81 is adjusted by rotating the positioning screw 84 to raise and lower the jack plate. Specifically, the positioning screws 84 are four bolts, and correspond to the four guide posts 13.

In some possible implementations, referring to fig. 4, the upper end surface of the upper mold plate 2 is provided with a connecting plate 22, and the upper mold plate 2 is connected with the machine table through the connecting plate 22.

In this embodiment, by providing the connecting plate 22, the connecting plate 22 is higher than the casting demolding mechanism 8, so as to leave a space for the casting demolding mechanism 8 to operate. Specifically, the number of the connecting plates 22 is two, and the connecting plates are respectively arranged on two sides above the upper die plate 2 and are perpendicular to the supporting plate 12.

In some possible implementations, the connection plate 22 may have a structure as shown in fig. 4. Referring to fig. 4, a plurality of first U-shaped grooves 15 are formed at two ends of the lower template 1, a plurality of second U-shaped grooves 221 are formed in the upper end face of the connecting plate 22, and a abdicating groove 222 is formed below the second U-shaped grooves 221.

In this embodiment, the first U-shaped groove 15 is used for limiting the lower template 1 and is fixed on the machine table by bolts. The second U-shaped groove 221 is fixedly connected with the upper machine platen through bolts, the upper half of the die is enabled to rise and fall along with the machine platen normally, and the die opening and closing actions of the die are smoothly completed, wherein the receding groove 222 is formed below the second U-shaped groove 221, so that the operation of locking bolts can be conveniently performed, and the second U-shaped groove 221 is located above the supporting column of the connecting plate 22 and can be better stressed. Specifically, referring to fig. 3, there are 8 first U-shaped grooves 15 respectively arranged on both sides of the lower mold plate 1, and referring to fig. 4, there are four second U-shaped grooves 221 respectively arranged on both sides of each connecting plate 22.

In a possible implementation, referring to fig. 3, the bottom of the lower template 1 is circumferentially provided with a plurality of grooves 16. In this embodiment, the groove 16 is used to reduce the weight of the lower template 1.

In a possible implementation, referring to fig. 4, the casting demolding mechanism 8 further includes a guide assembly, which includes a plurality of guide posts 85 disposed on the upper mold plate 2 and guide sleeves 86 disposed on the ejector plate and corresponding to the guide posts 85.

In this embodiment, the number of the guide posts 85 and the guide sleeves 86 is four, the ejector rod upper plate 82 is rectangular, the guide sleeves 86 are respectively arranged at four corners of the ejector rod upper plate 82 and penetrate through the upper end surface and the lower end surface of the ejector rod upper plate 82, and the guide posts 85 are in sliding fit with the guide sleeves 86 to guide and support the ejector rod plate to move up and down stably.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a commercial car wheel hub low pressure mould which characterized in that includes:

2. The commercial vehicle hub low-pressure mold as claimed in claim 1, wherein the lower mold, the upper mold core and the spreader cone are provided with cooling holes communicated with the outside.

3. The commercial vehicle hub low pressure mold as claimed in claim 1, wherein the annular water cooling block is surrounded by a regular hexagonal water cooling channel communicating with the outside, and the water cooling channel is used for enhancing cooling of the casting target position.

4. The commercial vehicle hub low-pressure mold as claimed in claim 1, wherein a bottom end of the sprue is provided with a protrusion extending into the cavity and centered on the ceramic gate.

5. The commercial vehicle hub low-pressure die set according to claim 1, wherein the lower die plate is provided with a first positioning groove on an upper end surface, the upper die plate is provided with a second positioning groove on a lower end surface, a lower end of the lower die is located in the first positioning groove, and an upper end of the upper die is located in the second positioning groove.

6. The commercial vehicle hub low-pressure die as claimed in claim 1, wherein a support plate is fixedly arranged on an upper end surface of the lower template, the support plate is located between the lower template and the upper template, a plurality of guide posts are arranged at a top end of the support plate, and through holes corresponding to the guide posts are arranged in the upper template.

7. The commercial vehicle hub low pressure mold of claim 6, further comprising a casting ejection mechanism, the casting ejection mechanism comprising:

8. The commercial vehicle hub low pressure mold of claim 7, wherein the casting ejection mechanism further comprises:

9. The commercial vehicle hub low-pressure mold as claimed in claim 7, wherein a connecting plate is disposed on an upper end surface of the upper mold plate, and the upper mold plate is connected to a machine table through the connecting plate.

10. The commercial vehicle hub low-pressure die as claimed in claim 9, wherein a plurality of first U-shaped grooves are formed in two ends of the lower die plate, a plurality of second U-shaped grooves are formed in the upper end face of the connecting plate, and a relief groove is formed below each second U-shaped groove.