CN224058676U - Die casting die of steering gear upper column casing - Google Patents

Abstract

This utility model discloses a die-casting mold for the upper cylinder of a steering gear, including an upper mold base, a lower mold base, an upper mold core, a lower mold core, a main insert shaft mold closing assembly, a secondary insert shaft mold closing assembly, a main side mold closing assembly, a secondary side mold closing assembly, a label changing assembly, a gating assembly, and a slag removal assembly. This utility model can more quickly realize batch label changing in die casting, improve production efficiency, and combine the gating and slag removal with conventional mold closing assemblies, reducing the design difficulty of gating and slag removal, while reducing the overall complexity of the mold and the volume of the mold core.

Description

Die casting die of steering gear upper column casing

Technical Field

The utility model relates to the field of mould production and manufacturing, in particular to a die casting mould of a steering gear upper column casing.

Background

The upper column casing of the steering gear is an important component of an automobile steering system, the structural strength can be ensured through a die-casting production mode, and meanwhile, a complex structure is produced, so that the production cost is reduced. In the existing die casting die of the steering gear upper column casing, batch marks are required to be printed on the steering gear upper column casing of each batch of die casting, so that replaceable inserts are required to be arranged in the die, the conventional insert type replacement batch is required to disassemble the die, the inserts are taken out and then new inserts are installed, and the disassembly is more troublesome, so that the production is affected.

Meanwhile, the existing diverter upper column casing die casting die is used for independently setting pouring and deslagging of molten aluminum, the die design difficulty is high, meanwhile, the die structure is more complex, and the size of the die is inevitably increased.

Disclosure of utility model

In view of the above-mentioned drawbacks of the prior art, the present utility model aims to provide a die casting mold for a diverter upper column casing, which can more rapidly realize die casting batch changing, improve production efficiency, combine casting and deslagging with conventional and mold closing components, reduce the design difficulty of casting and deslagging, and simultaneously reduce the complexity of the whole mold and reduce the volume of the mold core.

The aim of the utility model is realized by the following technical scheme:

The die-casting die of the upper column casing of the steering gear comprises an upper die base, a lower die base, an upper die core, a lower die core, a main inserting shaft die assembly, a secondary inserting shaft die assembly, a main side die assembly, a secondary side die assembly, a label changing assembly, a pouring assembly and a slag discharging assembly;

The upper die core is arranged on the lower surface of the upper die base, and the lower die core is arranged on the upper surface of the lower die core;

The die comprises a lower die holder, a main insertion shaft die assembly, a secondary insertion shaft die assembly, a main side die assembly and a secondary side die assembly, wherein the lower die holder is provided with mounting grooves for accommodating the main insertion shaft die assembly, the secondary insertion shaft die assembly, the main side die assembly and the secondary side die assembly in four directions;

The upper die holder is provided with a through hole for the mark changing component to pass through, and the position, opposite to the through hole, of the upper die core is provided with a through hole;

The slag discharging assembly is arranged on the secondary side die assembly, and the slag discharging channel is positioned on the inner wall of the die cavity.

Further, the die assembly end of the main plug shaft die assembly is a main plug shaft, and the tail end of the main plug shaft is provided with a positioning groove; the secondary inserting shaft die assembly comprises a main inserting shaft die assembly, a secondary inserting shaft die assembly and a positioning groove, wherein the die assembly end of the secondary inserting shaft die assembly is a secondary inserting shaft, the tail end of the secondary inserting shaft is provided with a positioning protrusion matched with the positioning groove, after the main inserting shaft die assembly and the secondary inserting shaft die assembly are matched, the positioning protrusion is inserted into the positioning groove, and the end face of the main inserting shaft abuts against the end face of the secondary inserting shaft.

Further, the casting assembly includes:

the pouring base is arranged on the sliding block of the main side mold closing assembly;

The surrounding seat is sleeved on the casting base, and a gap is reserved between the inner wall of the surrounding seat and the side surface of the casting base;

The pouring gate is arranged in the die cavity, the head end is communicated with the gap, and the tail end is positioned on the outer surface of the main plug shaft at the die clamping end of the main plug shaft die clamping assembly.

Further, the sprue comprises:

a main channel, the head end of which is communicated with the notch;

the tail ends of the two branch channels are symmetrically arranged around the axis of the main plug shaft at the die clamping end of the main plug shaft die clamping assembly, and the two branch channels are respectively arranged on the inner surfaces of the upper die core and the lower die core.

Further, the tail end of the branch channel is in a flat mouth shape and is wrapped on the cylindrical surface of the main plug shaft at the die closing end of the main plug shaft die closing assembly, and the tail end of the branch channel is opposite to the head end surface of the die-casting diverter upper column casing.

Further, the slag discharging assembly includes:

the slag discharging seat is arranged on the side surface of the sliding block of the secondary side die assembly and fixedly connected with the sliding block of the secondary side die assembly;

the main slag discharging channel is arranged in the die cavity, the head end is opposite to the tail end surface of the upper column casing of the die-casting diverter, and the tail end is communicated with the slag discharging seat;

The secondary slag discharging channel is arranged in the die cavity, the head end is opposite to the end face of the mounting plate of the upper column casing of the die-casting diverter, and the tail end is communicated with the slag discharging seat.

The main slag ladle cavities are uniformly and circumferentially arranged around the axis of the upper column casing of the die-casting diverter, the head ends of the main slag ladle cavities are in a flat mouth shape and are communicated with the tail end surface of the upper column casing of the die-casting diverter, and the tail ends of the three main slag ladle cavities positioned on the same side of the slag discharge seat are communicated with the slag discharge seat through the main discharge channel.

Further, the secondary slag ladle comprises four secondary slag ladle cavities, the secondary slag ladle cavities are divided into two groups of end faces of two mounting plates arranged on the upper column casing of the die-casting diverter, the head end of each secondary slag ladle cavity is in a flat mouth shape and is communicated with the two mounting plates of the upper column casing of the die-casting diverter, and the tail end of each secondary slag ladle cavity is communicated with a slag discharging seat through the secondary slag ladle.

Further, the through holes and the perforations form a stepped hole shape, and the diameter of the perforations is larger than that of the through holes;

the label changing assembly comprises:

the marker post is arranged on the surface of the marker post, the head end passes through the through hole the perforation is positioned in the upper mold core, the tail end is positioned on the outer surface of the upper die seat;

The mark head is connected with the head end of the mark post, and the mark surface of the mark head is exposed in the die cavity;

The label pushing mechanism is arranged on the upper die holder, and when in operation, the label pushing mechanism extrudes the tail end of the label rod, so that the label rod is forced to extrude the label head along the through hole, and the label head is forced to be separated from the through hole.

Further, a sliding groove is formed in the upper die holder, one end of the sliding groove is exposed, and the other end of the sliding groove faces the tail end of the marker post;

The label pushing mechanism comprises:

the tail end of the marker post is rounded, and the height of the tail end of the marker post is not more than the highest point of the inclined surface on the push rod;

The stop block is arranged on the upper die holder and shields the exposed end of the chute, and the middle part of the stop block is provided with a through hole which is opposite to the chute;

the outer contour of the reset rod is T-shaped, and the tail end of the reset rod passes through the through hole and is connected with the push rod;

and the reset spring is sleeved on the reset rod, and two ends of the reset spring are respectively propped against the head end of the reset rod and the stop block.

Due to the adoption of the technical scheme, the utility model has the following advantages:

1. The batch of standard blocks penetrate through the upper die base and the upper die core in a plug-in mounting mode to be placed in the die cavity, compared with the conventional insert standard block mode, the die has the advantage of being capable of replacing standard blocks more rapidly, the workload of replacing standard blocks is reduced, and the die service efficiency is improved.

2. The casting and slag discharging design is combined with the die assembly, so that the slag discharging material and the casting head can be automatically separated from the die when the die assembly is retracted, and meanwhile, the structure of casting and slag discharging is not required to be independently designed, so that the space use of the die can be greatly reduced, and the size of the die can be obviously reduced.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

The drawings of the present utility model are described as follows:

Fig. 1 is a schematic perspective view of a die casting die for an upper column casing of a steering gear in this embodiment.

Fig. 2 is a schematic perspective view of a main pin clamping assembly, a sub pin clamping assembly, a main side clamping assembly, and a sub side clamping assembly in the present embodiment.

Fig. 3 is a schematic bottom view of the main pin clamp assembly, the sub pin clamp assembly, the main side clamp assembly, and the sub side clamp assembly in this embodiment.

FIG. 4 is a schematic view of the structure of section A-A in FIG. 3.

Fig. 5 is an enlarged schematic view of the structure at B in fig. 4.

Fig. 6 is a schematic view of a first perspective structure of an upper mold core in the present embodiment.

Fig. 7 is a schematic diagram of a second perspective structure of the upper mold core in this embodiment.

Fig. 8 is a schematic bottom view of the upper mold core in this embodiment.

Fig. 9 is a schematic view of a first perspective structure of a lower mold core in this embodiment.

Fig. 10 is a schematic view of a second perspective structure of the lower mold core in this embodiment.

Fig. 11 is a schematic front view of the lower mold core in this embodiment.

Fig. 12 is a schematic perspective view of the pouring assembly, the slag discharging assembly and the upper column casing of the diverter in this embodiment.

Fig. 13 is a schematic top view of the casting assembly, slag discharging assembly and upper column casing of the diverter in this embodiment.

Fig. 14 is a schematic view of the C-C section structure of fig. 13.

Fig. 15 is a schematic perspective view of the upper die holder, the upper die core, and the label changing assembly in this embodiment.

Fig. 16 is a schematic top view of the upper die holder, the upper die core, and the label changing assembly in this embodiment.

FIG. 17 is a schematic view of the structure of section D-D in FIG. 16.

Fig. 18 is an enlarged schematic view of fig. 17 at E.

Fig. 19 is an enlarged schematic view of fig. 17 at F.

Fig. 20 is an enlarged schematic view of the structure at G in fig. 17.

In the drawings, the upper die holder 1, the through hole 11, the sliding groove 12, the lower die holder 3, the upper die core 31, the through hole 4, the lower die core 5, the main shaft inserting and clamping assembly 51, the main shaft inserting and clamping assembly 511, the positioning groove 511, the secondary shaft inserting and clamping assembly 6, the secondary shaft inserting 611, the positioning protrusion 7, the main shaft clamping assembly 8, the secondary side clamping assembly 91, the standard rod 92, the standard head 921, the mark surface 931, the push rod 931, the inclined surface 9311, the stop 932, the 9321, the through hole 933, the reset rod 934, the reset spring 101, the pouring base 102, the surrounding seat 1021, the notch 1031, the main channel 1032, the branch channel 201, the slag ladle cavity 2021, the main drain channel 2022, the secondary slag ladle cavity 2032, the secondary drain channel 300, the die cavity 400, the upper column drum 400, the mounting plate 401 and the mark 402.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

Examples:

As shown in fig. 1 to 20, the die casting mold of the diverter upper column casing 400 comprises an upper die holder 1, a lower die holder 2, an upper die core 3, a lower die core 4, a main insert shaft die assembly 5, a secondary insert shaft die assembly 6, a main side die assembly 7, a secondary side die assembly 8, a label changing assembly, a pouring assembly and a slag discharging assembly;

The upper die core 3 is arranged on the lower surface of the upper die holder 1, and the lower die core 4 is arranged on the upper surface of the lower die core 4, after the upper die holder 1 and the lower die holder 2 are assembled, a die cavity 300 is formed in the upper die core 3 and the lower die core 4;

The die assembly comprises a lower die holder 2, a main insertion shaft die assembly 5, a secondary insertion shaft die assembly 6, a main side die assembly 7 and a secondary side die assembly 8, wherein the four directions of the lower die holder 2 are provided with mounting grooves for accommodating the main insertion shaft die assembly 5, the secondary insertion shaft die assembly 6, the main side die assembly 7 and the secondary side die assembly 8, and the die assembly surfaces of the main insertion shaft die assembly 5, the secondary insertion shaft die assembly 6, the main side die assembly 7 and the secondary side die assembly 8 extend into a die cavity 300 surrounding an upper die core 3 and a lower die core 4;

the upper die holder 1 is provided with a through hole 11 for a label changing component to pass through, the position, opposite to the through hole 11, of the upper die core 3 is provided with a through hole 31, a label 92 of the label changing component is fixed in the upper die core 3, and a label printing surface 921 of the label 92 is exposed in the die cavity 300;

The pouring inlet assembly is arranged on the primary side die assembly 7, the pouring inlet is arranged on the inner wall of the die cavity 300, the slag discharging assembly is arranged on the secondary side die assembly 8, and the slag discharging channel is arranged on the inner wall of the die cavity 300.

The batch of standard blocks are inserted into the die cavity 300 through the upper die base 1 and the upper die core 3, so that compared with the conventional insert standard block form, the method has the advantage of more rapid standard block replacement, reduces the workload of standard block replacement, and improves the die use efficiency. The casting and slag discharging design is combined with the die assembly, so that the slag discharging material and the casting head can be automatically separated from the die when the die assembly is retracted, and meanwhile, the structure of casting and slag discharging is not required to be independently designed, so that the space use of the die can be greatly reduced, and the size of the die can be obviously reduced.

The main insert shaft clamping assembly 5, the secondary insert shaft clamping assembly 6, the main side clamping assembly 7 and the secondary side clamping assembly 8 in the embodiment adopt the structure form of a conventional clamping assembly, namely the structure form of a hydraulic cylinder, a fixing seat and a sliding block, and the specific structure, the contour and the like are adjusted according to actual requirements.

In this embodiment, the clamping end of the main shaft clamping assembly 5 is a main shaft 51, a positioning groove 511 is provided at the end of the main shaft 51, the clamping end of the sub shaft clamping assembly 6 is a sub shaft 61, a positioning protrusion 611 matching with the positioning groove 511 is provided at the end of the sub shaft 61, after the main shaft clamping assembly 5 and the sub shaft clamping assembly 6 are clamped, the positioning protrusion 611 is inserted into the positioning groove 511, and the end face of the main shaft 51 abuts against the end face of the sub shaft 61.

The main inserting shaft 51 and the secondary inserting shaft 61 are inserted (the limiting protrusion and the limiting groove) to form a complete cylinder cavity, after the length of the inserting shaft is reduced, the bending possibility in the using process of the inserting shaft can be reduced, and the service life of the die is prolonged.

In this embodiment, the casting component includes:

A casting base 101 disposed on the slide of the main-side clamp assembly 7;

the surrounding seat 102 is sleeved on the casting base 101, and a gap is reserved between the inner wall of the surrounding seat 102 and the side surface of the casting base 101, wherein a notch 1021 is arranged at the lower end of the surrounding seat 102;

the sprue is arranged in the die cavity 300, the head end is communicated with the notch 1021, and the tail end is positioned on the outer surface of the main plug shaft 51 at the die clamping end of the main plug shaft die clamping assembly 5.

The sprue comprises:

A main channel 1031, the head end of which is communicated with the notch 1021;

Two branch channels 1032, the head end of which is communicated with the tail end of the main channel 1031, the tail end of which is positioned on the outer surface of the main plug shaft 51 at the die clamping end of the main plug shaft die clamping assembly 5, the tail ends of the two branch channels 1032 are symmetrically arranged around the axis of the main plug shaft 51 at the die clamping end of the main plug shaft die clamping assembly 5, and the two branch channels 1032 are respectively arranged on the inner surfaces of the upper die core 3 and the lower die core 4.

The tail end of the branch channel 1032 is flat mouth-shaped and is wrapped on the cylindrical surface of the main plug shaft 51 at the die clamping end of the main plug shaft die clamping assembly 5, and the tail end of the branch channel 1032 is opposite to the head end surface of the die-casting diverter upper column casing 400.

By providing the runner base 101 on the main side clamping assembly 7, the occupation of the mold core by the runner system is reduced, so that the mold volume can be significantly reduced. The liquid outlet position for pouring is arranged on the head end face of the upper column casing 400 of the die-casting diverter, so that the whole die cavity 300 can be filled with the aluminum liquid rapidly, the flowing speed of the aluminum liquid in each part of the die cavity 300 is more uniform, and the die-casting quality is improved.

In this embodiment, the slag discharging assembly includes:

the slag discharging seat 201 is arranged on the side surface of the sliding block of the secondary side die assembly 8 and fixedly connected with the sliding block of the secondary side die assembly 8;

A main slag discharging path provided in the mold cavity 300, the head end is opposite to the tail end surface of the diverter upper column casing 400, and the tail end is communicated with the slag discharging seat 201;

The secondary slag discharging channel is arranged in the die cavity 300, the head end is opposite to the end face of the mounting plate 401 of the die-casting diverter upper column casing 400, and the tail end is communicated with the slag discharging seat 201.

In this embodiment, the primary slag ladle comprises four primary slag ladle cavities 2021, which are uniformly and circumferentially arranged around the axis of the die-cast diverter upper column 400, wherein the head end of the primary slag ladle cavities 2021 is in a flat nozzle shape and is communicated with the tail end surface of the die-cast diverter upper column 400, and the tail ends of the three primary slag ladle cavities 2021 positioned on the same side of the slag ladle 201 are communicated with the slag ladle 201 through primary discharge channels 2022.

In this embodiment, the secondary slag runner includes four secondary slag ladle cavities 2031, two sets of end faces of two mounting plates 401 disposed on the die-cast diverter upper column 400 are divided, the head end of the secondary slag ladle cavity 2031 is in a flat nozzle shape, and is communicated with the two mounting plates 401 of the die-cast diverter upper column 400, and the tail end is communicated with the slag discharge seat 201 through the secondary slag runner 2032.

The main slag discharging channel is arranged at the tail end of the upper column casing 400 of the die-casting diverter in the opposite direction of the aluminum liquid discharged from the die cavity 300, so that waste residues can be effectively collected in a concentrated mode, and meanwhile, the secondary slag discharging channel is arranged at the mounting plate 401 of the wing plate shape according to the structural characteristics of the upper column casing 400 of the die-casting diverter, so that the waste residues formed in the structure can be rapidly discharged, and the structural strength of the die-casting diverter is guaranteed. The slag discharging seat 201 adopts a structural form with the application number 202421747696X, and is internally provided with a wavy cavity, so that waste slag can be effectively contained and the pressure in the die cavity 300 can be maintained.

In the embodiment, the through hole 11 and the through hole 31 form a stepped hole shape, and the diameter of the through hole 31 is larger than that of the through hole 11;

the label changing assembly comprises:

The marker post 91, the head end of which passes through the through hole 11 and the through hole 31 is positioned in the upper mold core 3, the tail end is positioned on the outer surface of the upper die holder 1;

The mark head 92 is connected with the head end of the mark post 91, and the mark surface 921 of the mark head 92 is exposed in the die cavity 300, and the mark head 92 is in interference fit with the perforation 31;

the label pushing mechanism is arranged on the upper die holder 1, and when the label pushing mechanism works, the tail end of the label rod 91 is extruded, so that the label rod 91 is forced to extrude the label head 92 along the through hole 11, and the label head 92 is forced to be separated from the through hole 31.

A sliding groove 12 is formed in the upper die holder 1, one end of the sliding groove 12 is exposed, and the other end of the sliding groove is opposite to the tail end of the standard post 91;

The label pushing mechanism comprises:

The push rod 931 is arranged in the chute 12, the head end of the push rod 931 is provided with an inclined surface 931, and the normal line of the inclined surface 931 points to the marker post 91, and the tail end of the marker post 91 is rounded, and the height of the tail end of the marker post is not more than the highest point of the inclined surface 931 on the push rod 931;

a stop 932 arranged on the upper die holder 1 and shielding the exposed end of the chute 12, wherein a through hole 9321 facing the chute 12 is arranged in the middle of the stop 932;

A reset lever 933 having an outer contour in a T shape, and a tail end connected to the push rod 931 through the via hole 9321;

and a return spring 934, which is sleeved on the return rod 933, and two ends of the return spring are respectively propped against the head end of the return rod 933 and the stop 932.

The adoption with the form of head 92 and the installation of last mold core 3 interference fit, the leakproofness of head 92 and last mold core 3 can be guaranteed to the in-process of die casting, when need trade the mark again, extrudees the mark post 91 through push rod 931, drives head 92 and last mold core 3 separation and can accomplish, compares in the structural style of conventional change mold insert, has avoided dismantling the operation of separation upper mold core 3 and upper die base 1, very big improvement change efficiency.

The die casting mold of the upper column casing 400 of the steering gear is used in this embodiment, the upper die base 1 and the lower die base 2 are controlled to be separated, the die cavity 300 is exposed, the reset rod 933 is pressed at this time, the inclined surface 931 of the push rod 931 is forced to squeeze the upper end of the marker post 91, the marker post 91 is pressed under the extrusion, the head 92 is pressed, finally the head 92 is separated from the upper die core 3, the extrusion of the reset rod 933 is released, and the reset rod 933 is reset under the action of the reset spring 934. The corresponding head 92 of the imprint is selected, and the upper mold core 3 is mounted by interference fit from the surface of the mold cavity 300.

And (3) closing the upper die holder 1 and the lower die holder 2, performing die casting after the die is closed, vacuumizing the die cavity 300, pouring molten aluminum into the die cavity 300 through a pouring assembly after the die cavity is closed, enabling waste residues to enter a slag discharging assembly, separating the upper die set from the lower die holder 2 after the die-cast upper steering gear column 400 is cooled, and taking out the die-cast upper steering gear column 400.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention, which is intended to be covered by the claims of the present invention.

Claims (10)

1. The die-casting die for the upper column casing of the steering gear is characterized by comprising an upper die base, a lower die base, an upper die core, a lower die core, a main inserting shaft die assembly, a secondary inserting shaft die assembly, a main side die assembly, a secondary side die assembly, a label changing assembly, a pouring assembly and a slag discharging assembly;

The upper die core is arranged on the lower surface of the upper die base, and the lower die core is arranged on the upper surface of the lower die core;

The die comprises a lower die holder, a main insertion shaft die assembly, a secondary insertion shaft die assembly, a main side die assembly and a secondary side die assembly, wherein the lower die holder is provided with mounting grooves for accommodating the main insertion shaft die assembly, the secondary insertion shaft die assembly, the main side die assembly and the secondary side die assembly in four directions;

The upper die holder is provided with a through hole for the mark changing component to pass through, and the position, opposite to the through hole, of the upper die core is provided with a through hole;

The slag discharging assembly is arranged on the secondary side die assembly, and the slag discharging channel is positioned on the inner wall of the die cavity.

2. The die casting die for the upper column casing of the steering gear is characterized in that a die clamping end of the main shaft clamping assembly is a main shaft, a positioning groove is formed in the tail end of the main shaft, the die clamping end of the secondary shaft clamping assembly is a secondary shaft, a positioning protrusion matched with the positioning groove is formed in the tail end of the secondary shaft, after the main shaft clamping assembly and the secondary shaft clamping assembly are clamped, the positioning protrusion is inserted into the positioning groove, and the end face of the main shaft is abutted to the end face of the secondary shaft.

3. The die casting die for a diverter upper cylinder as defined in claim 1, wherein said pouring assembly comprises:

the pouring base is arranged on the sliding block of the main side mold closing assembly;

The surrounding seat is sleeved on the casting base, and a gap is reserved between the inner wall of the surrounding seat and the side surface of the casting base;

The pouring gate is arranged in the die cavity, the head end is communicated with the gap, and the tail end is positioned on the outer surface of the main plug shaft at the die clamping end of the main plug shaft die clamping assembly.

4. A diverter upper barrel die casting mold as defined in claim 3, wherein said sprue comprises:

a main channel, the head end of which is communicated with the notch;

the tail ends of the two branch channels are symmetrically arranged around the axis of the main plug shaft at the die clamping end of the main plug shaft die clamping assembly, and the two branch channels are respectively arranged on the inner surfaces of the upper die core and the lower die core.

5. The die casting die for the upper column casing of the steering gear according to claim 4, wherein the tail end of the branch passage is in a flat mouth shape and is wrapped on the cylindrical surface of the main plug shaft of the die closing end of the main plug shaft die closing assembly, and the tail end of the branch passage is opposite to the head end surface of the upper column casing of the steering gear in die casting.

6. The die casting die of the diverter upper column casing of claim 1, wherein the slag removal assembly comprises:

the slag discharging seat is arranged on the side surface of the sliding block of the secondary side die assembly and fixedly connected with the sliding block of the secondary side die assembly;

the main slag discharging channel is arranged in the die cavity, the head end is opposite to the tail end surface of the upper column casing of the die-casting diverter, and the tail end is communicated with the slag discharging seat;

The secondary slag discharging channel is arranged in the die cavity, the head end is opposite to the end face of the mounting plate of the upper column casing of the die-casting diverter, and the tail end is communicated with the slag discharging seat.

7. The die casting die for the upper steering column casing of the die casting machine according to claim 6, wherein the main slag ladle comprises four main slag ladle cavities which are uniformly and circumferentially arrayed around the axis of the upper steering column casing of the die casting machine, the head ends of the main slag ladle cavities are flat mouths and are communicated with the tail end surface of the upper steering column casing of the die casting machine, and the tail ends of the three main slag ladle cavities positioned on the same side of the slag ladle are communicated with the slag ladle through the main slag ladle.

8. The die casting die of the upper steering gear column according to claim 6, wherein the secondary slag runner comprises four secondary slag ladle cavities, the secondary slag ladle cavities are divided into two groups of end faces arranged on two mounting plates of the upper steering gear column, the head ends of the secondary slag ladle cavities are in a flat mouth shape and are communicated with the two mounting plates of the upper steering gear column, and the tail ends of the secondary slag ladle cavities are communicated with the slag discharge seat through the secondary slag runner.

9. The die casting die for the upper column casing of the steering gear according to claim 1, wherein the through hole and the perforation are formed in a stepped hole shape;

the label changing assembly comprises:

the marker post is arranged on the surface of the marker post, the head end passes through the through hole the perforation is positioned in the upper mold core, the tail end is positioned on the outer surface of the upper die seat;

The mark head is connected with the head end of the mark post, and the mark surface of the mark head is exposed in the die cavity;

The label pushing mechanism is arranged on the upper die holder, and when in operation, the label pushing mechanism extrudes the tail end of the label rod, so that the label rod is forced to extrude the label head along the through hole, and the label head is forced to be separated from the through hole.

10. The die casting die for the upper column casing of the steering gear according to claim 9, wherein a chute is arranged on the upper die base, one end of the chute is exposed, and the other end is opposite to the tail end of the marker post;

The label pushing mechanism comprises:

the tail end of the marker post is rounded, and the height of the tail end of the marker post is not more than the highest point of the inclined surface on the push rod;

The stop block is arranged on the upper die holder and shields the exposed end of the chute, and the middle part of the stop block is provided with a through hole which is opposite to the chute;

the outer contour of the reset rod is T-shaped, and the tail end of the reset rod passes through the through hole and is connected with the push rod;

and the reset spring is sleeved on the reset rod, and two ends of the reset spring are respectively propped against the head end of the reset rod and the stop block.