阅读说明：本技术 一种转向拉杆接头防尘罩用模具 (Mould for steering linkage joint dust cover ) 是由 韩双能 张镔 周杰 胡荣林 王水林 汪平 席志刚 于 2021-08-31 设计创作，主要内容包括：本发明提出了一种转向拉杆接头防尘罩用模具,通过设置的注料通道与上模腔内壁连通,在注料通道的出料口与上模腔内壁最宽的位置连通(即产品最厚的部位),可以减少提高产品表面的光滑度,相较于传统产品能够提高其抗疲劳破坏能力；同时增加薄联通槽,通过冷冻去飞边,减少出现撕边效果不佳甚至撕破产品及修边效率低下的情况。(The invention provides a mold for a steering pull rod joint dust cover, which is characterized in that a material injection channel is communicated with the inner wall of an upper mold cavity, and a discharge port of the material injection channel is communicated with the widest position of the inner wall of the upper mold cavity (namely the thickest part of a product), so that the smoothness of the surface of the product can be reduced and improved, and the fatigue damage resistance of the mold can be improved compared with the traditional product; meanwhile, the thin communicating groove is added, and flash is removed through freezing, so that the situations of poor edge tearing effect, even product tearing and low trimming efficiency are reduced.)

1. The utility model provides a steering linkage connects mould for dust cover, its characterized in that, includes cope match-plate pattern (4), lower bolster (6) and hafu (5), install on cope match-plate pattern (4) upper die core (1), install on lower bolster (6) lower die core (6), a plurality of die cavities have been seted up on hafu (5), and lower mold core (2) are installed to the die cavity, form down die cavity between lower mold core (2) and hafu (5), be provided with on lower mold core (2) mold core (1), form between upper die core (1) and lower mold core (2) with the last die cavity of lower die cavity intercommunication and with the passageway of moulding plastics of last die cavity intercommunication, the discharge gate of the passageway of moulding plastics communicates with the inner wall of last die cavity, go up and run through on mold core (1) and set up the notes material passageway that communicates with the passageway of moulding plastics.

2. The mold of claim 1, wherein the injection channel is cross-shaped, and the discharge port of the injection channel is a thin diameter channel, the diameter of the thin diameter channel is smaller than the diameter of the injection channel, and the thin diameter channel is communicated with the upper mold cavity.

3. The mold for the dust cover of the steering tie-rod joint according to claim 1, wherein the half (5) is provided with a plurality of thin communicating grooves (12) corresponding to the plurality of die cavities one by one, and the thin communicating grooves (12) are communicated with the die cavities.

4. The mold for the steering linkage joint dust cover according to claim 3, wherein the half (5) is provided with a freezing groove (13) communicated with the thin communicating groove (12).

5. The mold for the steering linkage joint dust cover according to claim 1, wherein the lower template (6) is provided with an installation groove matched with the lower mold core (2), and the bottom of the lower mold core (2) is detachably inserted in the installation groove.

6. The mold for the steering linkage joint dust cover according to claim 5, wherein the upper mold plate (4) is provided with a plurality of material injection grooves, the material injection grooves are provided with a plurality of assembling grooves matched with the upper mold cores (1), and the material injection grooves are communicated with material injection channels on the plurality of upper mold cores (1) in the material injection grooves.

7. The mold for the steering linkage joint dust cover according to claim 6, wherein an injection plug plate (3) is arranged above the upper mold plate (4), one side of the injection plug plate (3) close to the upper mold plate (4) is connected with a plurality of injection plug lugs which correspond to the injection grooves one by one, and the injection plug lugs are matched with the injection grooves in a sliding fit manner.

8. The mold for the steering tie-rod joint dust cover according to claim 7, wherein a first straight guide pillar (7) is installed on one side of the injection plug plate (3) close to the upper template (4), and a first positioning guide sleeve (8) matched with the first straight guide pillar (7) is installed on the upper template (4); a second straight guide post (9) is installed on one side, close to the upper template (4), of the lower template (6), a second positioning guide sleeve (11) matched with the second straight guide post (9) is installed on the upper template (4), and a lifting lug (10) is connected to the upper template (4).

Technical Field

The invention relates to the technical field of steering pull rod joint dust cover dies, in particular to a die for a steering pull rod joint dust cover.

Background

The steering linkage connects the dust cover to be automobile steering system's important sealing member, thereby the steering wheel rotates to drive the directive wheel through the steering gear pull rod and realizes the auto steering during auto steering, suspension operating mode is abominable when the automobile goes, because violent jump of tire and earth sand and dust raise, muddy water splashes, turn to the dust cover and save badly and break easily, can cause the loss and the dust of lubricating grease after the damage, the entering of water causes the bulb to rust, finally lead to the mill to economize, loose, abnormal sound, can lead to the occurence of failure seriously. Therefore, the function of the steering tie rod ball head dust cover is very important, the requirement for parts is easy to save, and the structure of the die must be continuously improved by improving the product quality and the production efficiency. The dust cover is easy to fatigue damage due to repeated compression and stretching during working, the corrugation of the dust cover needs to be uniform in wall thickness, so that stress concentration can be effectively reduced, original fine cracks are prevented from being generated, the surface of the corrugation is smooth and flat as much as possible, material points and salient points are arranged on the structure of an original product, the product is prevented from being broken when the runner waste glue is removed, the surface of the product is provided with the salient points, the smoothness and smoothness cannot be achieved, and the fatigue damage resistance of the product is easily affected.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides a mold for a steering tie-rod joint dust cover.

The invention provides a mold for a steering pull rod joint dust cover, which comprises an upper mold plate, a lower mold plate and a half, wherein an upper mold core is arranged on the upper mold plate, a lower mold core is arranged on the lower mold plate, a plurality of mold cavities are formed in the half, the lower mold core is arranged in the mold cavities, a lower mold cavity is formed between the lower mold core and the half, the lower mold core is provided with the upper mold core, an upper mold cavity communicated with the lower mold cavity and an injection molding channel communicated with the upper mold cavity are formed between the upper mold core and the lower mold core, a discharge hole of the injection molding channel is communicated with the inner wall of the upper mold cavity, and a material injection channel communicated with the injection molding channel is arranged on the upper mold core in a penetrating manner.

Preferably, the injection molding channel is cross-shaped, a discharge port of the injection molding channel is a thin-diameter channel, the diameter of the thin-diameter channel is smaller than that of the injection molding channel, and the thin-diameter channel is communicated with the upper die cavity.

Preferably, a plurality of thin communication grooves which correspond to the multiple section die cavities one to one are formed in the half, and the thin communication grooves are communicated with the section die cavities.

Preferably, the half is provided with a freezing groove communicated with the thin communicating groove.

Preferably, the lower template is provided with a mounting groove matched with the lower mold core, and the bottom of the lower mold core is detachably inserted in the mounting groove.

Preferably, a plurality of material injection grooves are formed in the upper template, a plurality of assembling grooves matched with the upper mold core are formed in the material injection grooves, and the material injection grooves are communicated with material injection channels on a plurality of upper mold cores in the material injection grooves.

Preferably, the upper die plate is provided with a plunger plate above, one side of the plunger plate close to the upper die plate is connected with a plurality of plunger lugs corresponding to the plurality of injection grooves one by one, and the plunger lugs are matched with the injection grooves in a sliding fit manner.

Preferably, one side of the plug injection plate, which is close to the upper template, is provided with a first straight guide pillar, and the upper template is provided with a first positioning guide sleeve matched with the first straight guide pillar; a second straight guide pillar is installed on one side, close to the upper template, of the lower template, a second positioning guide sleeve matched with the second straight guide pillar is installed on the upper template, and a lifting lug is connected to the upper template.

The mold for the steering pull rod joint dust cover provided by the invention has the beneficial effects that: through the material passageway of annotating that sets up and last die cavity inner wall intercommunication, the discharge gate that annotates the material passageway communicates with last die cavity inner wall widest position (the position that the product is the thickest), can reduce the smoothness that improves the product surface, compares and can improve its antifatigue destruction ability in traditional product.

Drawings

FIG. 1 is a sectional view of a mold for a tie-rod joint dust cover according to the present invention;

FIG. 2 is a top view of a mold for a tie-rod joint dust boot according to the present invention;

FIG. 3 is a cross-sectional view of a lower mold core of a mold for a tie-rod joint dust cover according to the present invention;

FIG. 4 is a top view of a lower mold core of the mold for the dust cover of the steering linkage joint according to the present invention;

FIG. 5 is a cross-sectional view of a half of a mold for a tie-rod joint dust cover according to the present invention;

FIG. 6 is a top view of a half of a mold for a tie-rod joint dust cover according to the present invention;

fig. 7 is a partial sectional view of a half of a conventional mold for a tie-rod joint dust cover.

In the figure: 1. an upper mold core; 2. a lower mold core; 3. a plug injection plate; 4. mounting a template; 5. half; 6. a lower template; 7. a first straight guide post; 8. a first positioning guide sleeve; 9. a second straight guide post; 10. lifting ears; 11. a second positioning guide sleeve; 12. a thin communicating groove; 13. and (4) a freezing tank.

Detailed Description

Referring to fig. 1-7, the invention provides a mold for a steering tie-rod joint dust cover, which comprises an upper template 4, a lower template 6 and a half 5, wherein:

the upper mold core 1 is arranged on an upper template 4, the lower mold core 6 is arranged on a lower template 6, a plurality of mold cavities are formed in a half 5, a lower mold core 2 is arranged in each mold cavity, a lower mold cavity is formed between the lower mold core 2 and the half 5, the lower mold core 2 is provided with the upper mold core 1, an upper mold cavity communicated with the lower mold cavity and an injection molding channel communicated with the upper mold cavity are formed between the upper mold core 1 and the lower mold core 2, a discharge port of the injection molding channel is communicated with the inner wall of the upper mold cavity, and the upper mold core 1 is provided with a material injection channel communicated with the injection molding channel in a penetrating manner;

the material is injected through the injection channel, the material enters the upper die cavity and the lower die cavity through the injection channel, the product dust cover is formed by a plurality of sections of corrugated pipe sections, the thickness of the opening position on the product is thicker than other parts, and the discharge port of the injection channel is communicated with the inner wall of the position with the maximum thickness of the upper die cavity.

In a specific embodiment, the injection molding channel is in a cross shape, a discharge port of the injection molding channel is a thin-diameter channel, the diameter of the thin-diameter channel is smaller than that of the injection molding channel, and the thin-diameter channel is communicated with the upper mold cavity; the injection molding channel is designed into a cross shape, so that injection molding can be conveniently carried out at multiple points, the injection molding uniformity is also ensured, meanwhile, the connection between the injection molding channel and a product can be reduced through the thin-diameter channel, and the protruding injection points are eliminated.

In a specific embodiment, a plurality of thin communication grooves 12 corresponding to a plurality of die cavities one by one are formed in the half 5, and the thin communication grooves 12 are communicated with the die cavities; the thickness of thin antithetical couplet groove 12 is 0.03mm, when moulding plastics, can make things convenient for the clout of surplus to get into, can be through adding some materials more when moulding plastics, can ensure the yield of product, reduce the defective rate, can place the product after the demolding in the liquid nitrogen simultaneously, because the liquid nitrogen temperature is low, such elastomer of rubber loses elasticity rapidly and embrittlement, there is the exogenic action waste material just to separate with the product slightly, avoid appearing the tradition because of tearing the circumstances that the blade on the groove of limit is dull and led to tearing the effect not good even tear the product and reduce the circumstances that the deburring inefficiency.

In a specific embodiment, the half 5 is provided with a freezing groove 13 communicated with the thin communicating groove 12; more materials can be added when people inject plastics again conveniently, the effect of injection moulding is ensured, the injection of excess materials is facilitated, the yield is improved, and the distance between the freezing groove 13 and the cavity is 0.15-0.3 mm.

In a specific embodiment, the lower template 6 is provided with a mounting groove matched with the lower mold core 2, and the bottom of the lower mold core 2 is detachably inserted in the mounting groove; the firmness and stability of the installation of the lower mold core 2 can be ensured.

In a specific embodiment, a plurality of material injection grooves are formed in the upper template 4, a plurality of assembling grooves matched with the upper mold cores 1 are formed in the material injection grooves, and the material injection grooves are communicated with material injection channels on the plurality of upper mold cores 1 in the material injection grooves; the firmness and stability of the installation of the upper mold core 1 can be ensured.

In a specific embodiment, an injection plug plate 3 is arranged above an upper template 4, one side of the injection plug plate 3 close to the upper template 4 is connected with a plurality of injection plug lugs which are in one-to-one correspondence with a plurality of injection grooves, and the injection plug lugs are matched with the injection grooves in a sliding fit manner; can conveniently pour the material into the notes silo, extrude the material simultaneously by annotating 3 same a plurality of notes stopper lugs of promotion of stopper board, mould plastics a plurality ofly simultaneously, improve work efficiency.

In a specific embodiment, a first straight guide post 7 is arranged on one side of the injection plug plate 3 close to the upper template 4, and a first positioning guide sleeve 8 matched with the first straight guide post 7 is arranged on the upper template 4; a second straight guide post 9 is arranged on one side, close to the upper template 4, of the lower template 6, a second positioning guide sleeve 11 matched with the second straight guide post 9 is arranged on the upper template 4, and a lifting lug 10 is connected to the upper template 4; the positioning between the injection plug plate 3 and the upper template 4 can be ensured through the matching between the first straight guide post 7 and the first positioning guide sleeve 8, the positioning between the upper template 3 and the lower template 6 is ensured through the matching between the second straight guide post 9 and the second positioning guide sleeve 11, and the lifting and the descending of the upper template 4 can be conveniently controlled through the lifting lug 10.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.