CN216941473U - Vulcanization mould for double-top type automobile ball head dust cover removal - Google Patents

Abstract

The utility model discloses a vulcanization mold of a double-top type automobile bulb dust cover, which comprises an upper mold, a middle mold and a lower mold, wherein at least one first mounting hole is formed in the middle mold, a first core is movably mounted in the first mounting hole, two ends of the first core extend out of the first mounting hole, one end of the first core is provided with a first expanding portion, the other end of the first core is provided with a first clamp spring, a second mounting hole is formed in the first core, a second core is movably mounted in the second mounting hole, two ends of the second core extend out of the first core, one end of the second core is provided with a second expanding portion, the other end of the second core is provided with a second clamp spring, the lower mold is provided with a first placing hole, a movable plate is further arranged between the middle mold and the lower mold, and the movable plate is provided with a second placing hole. The utility model has simple structure and strong practicability.

Description

Vulcanizing mold for double-top type removing of automobile ball head dust cover

Technical Field

The utility model relates to the field of vulcanization molds, in particular to a vulcanization mold for a double-top type automobile ball head dust cover.

Background

Because the work of the automobile suspension arm ball head is under the conditions of high temperature, dustiness and raininess, a dust cover is needed to protect the automobile ball head.

Because of the special mission of the dust cover, the inner walls at two ends are uniformly provided with a plurality of sealing rings, an annular groove is formed between any two adjacent sealing rings, the annular concave-convex parts of the inner walls at two ends enable the resistance of demoulding to be quite large, meanwhile, the outer walls at two ends are irregular concave-convex parts, the dust cover is large in the middle, the two ends are small, the inner part is hollow, the lower end needs to be expanded (because the workpiece is made of sizing material and is a soft workpiece and can be expanded) to get rid of a core (the core is matched with the inner wall of the workpiece and is in a shape with large middle and small two ends) during demoulding, so that the demoulding can be successful, after a vulcanizing machine is vulcanized and formed, the demoulding is a serious problem, when the traditional mould is demoulded, the core is fixed, a forming cavity is formed between the core, an upper mould and a middle mould, a worker holds a compressed air gun to blow concave-sweep the concave-convex parts at the upper end and the lower end of the workpiece, and the concave-convex parts of the workpiece are displaced with the traditional core, the lower end of the core is expanded by wearing heat-insulating gloves, and the large middle part of the core is overcome, so that the core is demoulded, on one hand, the demoulding efficiency is low, the yield is low after one day; on the other hand, the fingers of the staff are often burnt to be red; furthermore, the manual force is too violent during demoulding, so that the workpiece is irreversibly deformed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems in the related art at least to a certain extent aiming at the defects in the prior art, and provides a vulcanization mold for removing a dust cover of a ball head of an automobile in a double-top manner so as to achieve the purpose of quickly demolding workpieces.

In order to solve the technical problems, the technical scheme of the utility model is as follows: a vulcanization mould of a double-top type automobile ball head dust cover removing device comprises an upper mould, a middle mould and a lower mould, wherein the middle mould is provided with at least one first mounting hole, a first core is movably mounted in the first mounting hole, two ends of the first core extend out of the first mounting hole, one end of the first core is provided with a first expanding part, the other end of the first core is provided with a first snap spring, a second mounting hole is arranged in the first core, a second core is movably mounted in the second mounting hole, two ends of the second core extend out of the first core, one end of the second core is provided with a second expanding part, the other end of the second core is provided with a second snap spring, an upper cavity is arranged at the position of the upper mould corresponding to the first mounting hole, a forming cavity of a workpiece is formed by the upper cavity, the first expanding part, the second expanding part and the first mounting hole, a first placing hole for enabling the first core and the second core to fall is arranged at the position of the lower mould corresponding to the first mounting hole, and a moving plate is further arranged between the middle die and the lower die, and a second placing hole for enabling the first core and the second core to fall is formed in the position, corresponding to the first mounting hole, of the moving plate.

Further, the middle die comprises a first plate and a second plate, and the first plate and the second plate are fixed through bolts.

Furthermore, a groove is arranged in the upper cavity, a bulge is arranged on the second expansion part, and the outer wall of the circular bulge is attached to the inner wall of the groove when the mold is closed and vulcanized.

Further, the first mounting hole on be equipped with the cross-section and be big-end-up's isosceles trapezoid shape's first ring surface, first enlargement portion on be equipped with the cross-section and be big-end-up's isosceles trapezoid shape's second ring surface, during the compound die vulcanization, first ring surface and second ring surface laminating, at this moment, first core stretches out the well mould.

Furthermore, a third circular ring surface with an isosceles trapezoid-shaped cross section is arranged on the second mounting hole, a fourth circular ring surface with an isosceles trapezoid-shaped cross section is arranged on the second core, and when the mold is closed and vulcanized, the third circular ring surface is attached to the fourth circular ring surface, and the second core extends out of the first core.

Furthermore, the middle mold rectangular array is provided with a first mounting hole, the upper mold rectangular array is provided with a forming cavity, the lower mold rectangular array is provided with a first placing hole, and the movable plate rectangular array is provided with a second placing hole.

Further, well mould on be provided with 64 first mounting holes, be the rectangle and arrange, last mould be equipped with smooth runner, smooth runner includes main road and is located main road 4 branch circuits that just are oblique "ten" font all around, be equipped with on the well mould and be 16 interior runners that are oblique "ten" font, the main road is respectively through connecting line and branch circuit intercommunication, four ends of branch circuit respectively with 4 interior runners intercommunication of relevant position, the drill way department of first mounting hole is equipped with the breach, four ends of interior runner communicate with corresponding first mounting hole through corresponding breach respectively.

The technical effects of the utility model are mainly reflected in the following aspects: 1: through the design of the movable plate and the movable first core and the movable second core, semi-automatic demoulding is realized. 2: compared with the traditional process, in the demoulding process, the demoulding resistance of the inner surface and the outer surface of the lower end is overcome, and then the demoulding resistance of the lower end separated from the first core is overcome, so that the irreversible deformation of a just-formed workpiece caused by over-violent force is prevented. 3: the forming cavity is formed by the partial inner wall of the upper cavity, the partial outer surface of the first expanding part, the partial outer surface of the second expanding part and the partial inner wall of the first mounting hole, and the middle die is assembled through the first plate and the second plate due to the uniqueness of the workpiece, so that the problem of complexity of the existing first mounting hole machining is solved. 4: the first mounting hole is provided with a first circular ring surface with a cross section in an isosceles trapezoid shape with a large upper part and a small lower part, the first enlarged part is provided with a second circular ring surface with a cross section in an isosceles trapezoid shape with a large upper part and a small lower part, and the first circular ring surface is attached to the second circular ring surface; the second mounting hole is provided with a third circular ring surface with an isosceles trapezoid-shaped cross section, the second core is provided with a fourth circular ring surface with an isosceles trapezoid-shaped cross section, the third circular ring surface is attached to the fourth circular ring surface, and the third circular ring surface and the fourth circular ring surface can bear pressure more during die assembly processing. 5: the lower die and the moving plate are provided with the first placing holes and the second placing holes, so that the structure of the utility model is more compact, and meanwhile, the two transversely adjacent first placing holes on the moving plate are used as stressed supporting parts, so that the design is very ingenious. 6: the external shapes of the assembled first core and the assembled second core are the same as or different from the external shape of the traditional fixed core, but the structure that the first core and the second core can slide relatively is completely different from the prior art, and the design is very ingenious. 7: the first enlarged part and the second enlarged part have the limiting function: the assembled first expansion part and the second expansion part are matched with the interior of the workpiece; the second circular ring surface on the first enlarged portion and the fourth circular ring surface of the second enlarged portion have the effect of bearing force, and the design is reasonable and ingenious. 8: 4 are divided the way and are oblique "ten" word and arrange, 16 interior runners are oblique "ten" word and arrange, and reasonable in design is compact, and such arrangement can set up the most work piece molding cavity in limited space.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic view of the mold clamping in the direction A-A1;

FIG. 4 is a schematic cross-sectional view of a middle mold taken in the direction A-A1;

FIG. 5 is an enlarged view of the portion G of FIG. 4;

FIG. 6 is a schematic view of a second core;

FIG. 7 is a schematic view of the first core assembled with the second core;

FIG. 8 is a schematic view of the mold lift in the mold opening in the direction A-A1;

FIG. 9 is a schematic view of the structure of the left half of the moving plate moving in the direction A-A1 to the bottom H1+ H2;

fig. 10 is an enlarged view of a portion K of fig. 1.

Detailed Description

The embodiments of the present invention will be described in detail below, examples of which are illustrated in the accompanying drawings, and the embodiments described below by referring to the drawings are exemplary and intended to explain the present invention so that the technical aspects of the present invention can be more easily understood and appreciated, and are not to be construed as limiting the present invention.

It is noted that the mold of the present invention needs to be used in conjunction with a vulcanizer, and when in use, an air cylinder or an oil cylinder in the prior art is needed to drive the upper mold 1, the middle mold 2, and the moving plate 7 to move, the lower mold 3 is fixed on the vulcanizer, and during the movement, the mold is guided by a guide of vertical movement and guide of rail-type left-right movement in the prior art, and an exhaust pipe is provided inside the mold.

As shown in fig. 1, 2, 3, 6 and 7: a vulcanization mold of a double-top type automobile bulb dust cover removing device comprises an upper mold 1, a middle mold 2 and a lower mold 3, wherein a first mounting hole 4 is formed in the middle mold 2 in a rectangular array mode, a first core 5 is movably mounted in the first mounting hole 4, two ends of the first core 5 extend out of the first mounting hole 4, a first expanding portion 51 is arranged at one end of the first core 5, a first clamping spring 52 is arranged at the other end of the first core 5, the up-and-down movement position and distance of the first core 5 in the first mounting hole 4 are limited through the design of the first expanding portion 51 and the first clamping spring 52, a second mounting hole is formed in the first core 5, a second core 6 is movably mounted in the second mounting hole, two ends of the second core 6 extend out of the first core 5, a second expanding portion 61 is arranged at one end of the second core 6, a second clamping spring 62 is arranged at the other end of the second core 6, the up-and-down movement position and distance of the second core 6 in the second mounting hole are limited through the design of the second expanding portion 61 and the second clamping spring 62, the lower die 3 is provided with a first placing hole 31 for enabling the first core 5 and the second core 6 to fall at positions corresponding to the first mounting hole 4, a moving plate 7 is further arranged between the middle die 2 and the lower die 3, a second placing hole 71 for enabling the first core 5 and the second core 6 to fall at positions corresponding to the first mounting hole 4 is arranged at the moving plate 7, and when the die is closed and vulcanized, the first core 5 and the second core 6 can extend into the first placing hole 31 and the second placing hole 71.

As shown in fig. 6 and 7: the rod portion 01 of the first core 5 and the rod portion 01 of the second core 6 serve as guides.

As shown in fig. 6, 7 and 8: go up the position that mould 1 and first mounting hole 4 correspond and be equipped with cavity 11, the inner wall of circular protrusion 611's outer wall laminating recess 111, first anchor ring face 41 and the laminating of second anchor ring face 511, the laminating of third anchor ring face and fourth anchor ring face 621, during the vulcanization state, first anchor ring face 41 and the laminating of second anchor ring face 511, the laminating of third anchor ring face and fourth anchor ring face 621, go up cavity 11's partial inner wall, the partial surface of first enlargement portion 51, the partial surface of second enlargement portion 61 and the partial inner wall of first mounting hole 4 and constitute the enclosure space of a relative sizing material, this space is the shaping chamber of work piece 01.

As shown in fig. 4 and 5: when the die is closed and vulcanized, a part of inner wall of the upper cavity 11, a part of outer surface of the first enlarged part 51, a part of outer surface of the second enlarged part 61 and a part of inner wall of the first mounting hole 4 form a closed space relative to the rubber material, the space is a forming cavity of the workpiece 01, because the part of inner wall of the first mounting hole 4 is used as a part forming one of the forming cavities, the lower end surface of the workpiece 01 is provided with irregular concave-convex parts, the middle die 2 comprises a first plate 21 and a second plate 22, the first plate 21 and the second plate 22 are fixed through bolts, through the design, the concave-convex parts are disconnected, after the first plate 21 and the second plate 22 are assembled into the middle die 2, the first mounting hole 4 is internally provided with a structure matched with the irregular concave-convex parts at the lower end of the workpiece 01, and further, the middle die 2 is convenient to process, in brief, the hole D in the figure is very difficult to process by using the prior art, and at the deepest position of the hole D, there is also an annular flat surface F, which is a difficult point to machine in the prior art.

As shown in fig. 6, 7 and 8: the upper cavity 11 is internally provided with a groove 111, the second enlarged part 61 is provided with a protrusion 611, and when the mold is closed and vulcanized, the outer wall of the circular protrusion 611 is attached to the inner wall of the groove 111, so that a molding cavity sealed relative to the molding of the rubber material is formed.

As shown in fig. 6, 7 and 8: first mounting hole 4 on be equipped with the cross-section and be big-end-up's isosceles trapezoid shape's first ring surface 41, first enlargement portion 51 on be equipped with the cross-section and be big-end-up's isosceles trapezoid shape's second ring surface 511, during the compound die vulcanization, first ring surface 41 and second ring surface 511 laminating, sealed shaping chamber when the purpose makes the shaping of a relative sizing material shaping of formation, at this moment, first core 5 stretches out well mould 2, first jump ring 52 and well mould 2 have certain distance, this distance is exactly the biggest height H1 that first core 5 rises relative well mould 2.

As shown in fig. 6, 7 and 8: the second mounting hole on be equipped with the third ring surface that the cross-section is isosceles trapezoid shape, second enlarged portion 61 on be equipped with the fourth ring surface 621 that the cross-section is isosceles trapezoid shape, during the compound die vulcanization, third ring surface and fourth ring surface 621 laminate, the sealed shaping chamber when the purpose makes the relative sizing material shaping of formation, and at this moment, second core 6 stretches out first core 5, and second jump ring 62 has certain distance H2 with the terminal surface of first core 5, and this H1+ H2 is the maximum height that second core 6 rises relative well mould 2.

As shown in fig. 2: the rectangular array of the middle die 2 is provided with a first mounting hole 4, the rectangular array of the upper die 1 is provided with a forming cavity, the rectangular array of the lower die 3 is provided with a first placing hole 31, and the rectangular array of the moving plate 7 is provided with a second placing hole 71, so that the forming cavities are arranged as many as possible in a limited die, and the workpieces 01 as many as possible can be conveniently processed at one time.

The working principle is as follows: as shown in fig. 3, 8 and 9: starting the equipment, after the glue injection material is subjected to die assembly forming, opening the upper die 1, overcoming the demoulding resistance of irregular concave-convex outer surface of the upper end of the workpiece 01, jacking the middle die 2, moving the moving plate 7 to enable the second core 6 to be positioned above the position between the two first placing holes 31, placing the middle die 2, at the moment, enabling the first core 5 and the second core 6 to ascend by a distance H1 relative to the middle die 2 together until the first clamp spring 52 props against the middle die 2, overcoming the demoulding resistance of irregular concave-convex outer surface and annular concave-convex inner surface of the lower end of the workpiece 01 in the process, then enabling the second core 6 to ascend by a distance H2 relative to the middle die 2 until the second clamp spring 62 props against the end surface of the first core 5, overcoming the demoulding resistance that the workpiece 01 (the lower end is small and the middle is large) is separated from the first core 5 in the process, and finally manually overcoming the demoulding resistance of annular concave-convex inner surface of the upper end of the workpiece 01, and taking down the workpiece 01.

As shown in fig. 1, 2 and 10: the middle die is provided with 64 first mounting holes which are arranged in a rectangular mode, the upper die is provided with a smooth flow channel, the smooth flow channel comprises a main path 121 and 4 branch paths 122 which are located around the main path 121 at equal intervals and are in an oblique cross shape, 16 inner flow channels 123 which are in the oblique cross shape are arranged on the middle die in design, the main path 121 is communicated with the branch paths 122 through connecting pipelines 124, four ends of each branch path are communicated with the 4 inner flow channels 123 at corresponding positions respectively, a notch 125 is arranged at an orifice of each first mounting hole 4, the depth of each notch 125 is only 2mm, and the four ends of each inner flow channel 123 are communicated with the corresponding first mounting hole 4 through the corresponding notch 125.

According to the material injection principle, the materials respectively enter the 4 branches 122 through the main path 121, each branch 122 enters the corresponding inner runner 123 from four ends, each inner runner 123 enters the corresponding first mounting hole 4 from four ends through the notch 125, the sizing materials can basically and uniformly enter each forming cavity simultaneously and uniformly through the design, the working efficiency is improved, the forming cavities are designed as many as possible in one die, 64 products are formed at one time, and the yield is high.

The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.

Claims (7)

1. The vulcanization mould of car bulb dust cover is taken off to two top formulas includes mould, well mould and lower mould, its characterized in that: the middle die is provided with at least one first mounting hole, a first core is movably mounted in the first mounting hole, two ends of the first core extend out of the first mounting hole, one end of the first core is provided with a first expanding portion, the other end of the first core is provided with a first clamp spring, a second mounting hole is arranged in the first core, a second core is movably mounted in the second mounting hole, two ends of the second core extend out of the first core, one end of the second core is provided with a second expanding portion, the other end of the second core is provided with a second clamp spring, an upper cavity is arranged at the position of the upper die corresponding to the first mounting hole, a forming cavity of a workpiece is formed by the upper cavity, the first expanding portion, the second expanding portion and the first mounting hole in a vulcanization state, a first mounting hole for enabling the first core and the second core to be located is arranged at the position of the lower die corresponding to the first mounting hole, and a movable plate is further arranged between the middle die and the lower die, and a second placing hole for enabling the first core and the second core to fall is arranged at the position of the moving plate corresponding to the first mounting hole.

2. The vulcanization mold for a double-top type dust boot for automobile bulbs of claim 1, wherein said middle mold comprises a first plate and a second plate, and said first plate and said second plate are fixed by bolts.

3. The vulcanization mold for a double-top automobile ball head dust cover according to claim 1 or 2, wherein a groove is provided in the upper chamber, and a protrusion is provided on the second enlarged portion, and when the mold is closed and vulcanized, the outer wall of the circular protrusion is attached to the inner wall of the groove.

4. The mold for vulcanizing a double-top automobile ball head dust cover according to claim 1 or 2, wherein the first mounting hole is provided with a first circular ring surface with a cross section in an isosceles trapezoid shape with a large upper part and a small lower part, the first enlarged part is provided with a second circular ring surface with a cross section in an isosceles trapezoid shape with a large upper part and a small lower part, and when the mold is closed and vulcanized, the first circular ring surface is attached to the second circular ring surface, and at the same time, the first core extends out of the middle mold.

5. The vulcanizing mold for the double-top type automobile ball head dust cover removing device as claimed in claim 1 or 2, wherein the second mounting hole is provided with a third circular ring surface with an isosceles trapezoid-shaped cross section, the second core is provided with a fourth circular ring surface with an isosceles trapezoid-shaped cross section, the third circular ring surface is attached to the fourth circular ring surface when the mold is closed and vulcanized, and the second core extends out of the first core.

6. The mold for vulcanizing a double-top automobile ball head dust cover, according to claim 1, wherein the middle rectangular array has a first mounting hole, the upper rectangular array has a molding cavity, the lower rectangular array has a first mounting hole, the movable plate rectangular array has a second mounting hole, and in an initial state, a center line of the first mounting hole, a center line of the molding cavity, a center line of the first mounting hole and a center line of the second mounting hole are in the same straight line.

7. The vulcanizing mold for the double-top type automobile ball head dust cover removing device according to claim 1 or 6, wherein 64 first mounting holes are formed in the middle mold and are arranged in a rectangular shape, the upper mold is provided with a smooth flow passage, the smooth flow passage comprises a main path and 4 branches which are located around the main path and are in a cross shape, 16 inner flow passages in a cross shape are formed in the middle mold, the main path is communicated with the branches through connecting pipelines respectively, four ends of the branches are communicated with the 4 inner flow passages in corresponding positions respectively, notches are formed in the hole openings of the first mounting holes, and the four ends of the inner flow passages are communicated with the corresponding first mounting holes through the corresponding notches respectively.

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