CN217073091U - Rubber sealing strip forming die for airtight clamp - Google Patents

Rubber sealing strip forming die for airtight clamp Download PDF

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Publication number
CN217073091U
CN217073091U CN202220053155.1U CN202220053155U CN217073091U CN 217073091 U CN217073091 U CN 217073091U CN 202220053155 U CN202220053155 U CN 202220053155U CN 217073091 U CN217073091 U CN 217073091U
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Prior art keywords
core
cavity
mold
die
guide post
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CN202220053155.1U
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Chinese (zh)
Inventor
方鹏
白亚玲
胡阿林
李振源
王宠惠
韩养
柴伟
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AVIC Landing Gear Advanced Manufacturing Corp
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AVIC Landing Gear Advanced Manufacturing Corp
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Abstract

The utility model discloses a rubber sealing strip forming die for an airtight clamp, which comprises an upper die (1), a middle die and a lower die (5), wherein fifth cavities are symmetrically arranged at two ends of the lower surface of the upper die; the middle die comprises a U-shaped core (6) and core dies (4) symmetrically arranged on two sides of the core, the core is detachably connected with the core dies, a first cavity (41) is arranged on the upper surface of the core dies, a second cavity (42) is arranged on the surface, adjacent to the core, of the core dies, a fourth cavity (63) is arranged on the bottom surface of the core, and the first cavity is communicated with the second cavity; a U-shaped groove (51) is formed in the middle of the lower die, and a third cavity (52) is formed in the U-shaped groove; the first cavity and the fifth cavity are combined oppositely, and the second cavity and the third cavity are sequentially combined oppositely with the fourth cavity to form a sealing strip forming cavity. The utility model discloses positioning accuracy is high, and fashioned sealing strip size is stable and surface quality is high.

Description

Rubber sealing strip forming die for airtight clamp
Technical Field
The utility model relates to a mould manufacturing of design, especially a rubber seal strip forming die for airtight anchor clamps.
Background
At present, most sealing rings are in a revolving body structure, and a forming die of the sealing ring is specially designed according to the structure. As shown in fig. 1 to 3, the rubber sealing strip for the airtight fixture is composed of an O-ring section and two rectangular strips symmetrically arranged at two ends of the O-ring section, and the size of the O-ring section exceeds half of the size of a complete O-ring. The structure of the rubber sealing strip is completely different from the structure of the traditional sealing ring, so that the forming die of the traditional sealing ring cannot be used for forming and demoulding the structure of the rubber sealing strip.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that, the forming die to traditional sealing washer can not be used for airtight anchor clamps to use the shaping of rubber seal strip and the not enough of drawing of patterns, the utility model provides an airtight anchor clamps are with rubber seal strip forming die, its shaping problem that can solve airtight anchor clamps and use rubber seal strip to guarantee sealing strip stable in size and surface quality, compromise easy operation, practicality simultaneously.
In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides an airtight rubber seal strip forming die for anchor clamps, includes mould, well mould and lower mould, wherein:
fifth cavities are symmetrically arranged at two ends of the lower surface of the upper die;
the middle die comprises a U-shaped core and core dies symmetrically arranged on two sides of the core, the core is detachably connected with the core dies, a first cavity is arranged on the upper surface of the core dies, a second cavity is arranged on the core surface adjacent to the core of the core dies, a fourth cavity is arranged on the bottom surface of the core, and the first cavity is communicated with the second cavity;
a U-shaped groove is formed in the middle of the lower die, and a third cavity is formed in the U-shaped groove;
after the upper die, the middle die and the lower die are sequentially closed, the first cavity is combined with the fifth cavity oppositely, and the second cavity and the third cavity are combined with the fourth cavity oppositely to form a sealing strip forming cavity.
The utility model discloses a make well mould into can dismantle the split type structure that connects the constitution by two mandrels and core to upper surface at the mandrel sets up first die cavity, the adjacent core face of mandrel sets up the second die cavity, and the middle part of lower mould sets up the U-shaped groove, and the U-shaped inslot sets up the third die cavity, goes up mould, well mould and lower mould after the compound die in proper order, first die cavity with the fifth die cavity relatively combines, second die cavity, third die cavity in proper order with the fourth die cavity relatively combines and forms the sealing strip shaping chamber, injects the sizing material and just can be used to the shaping of airtight rubber sealing strip for anchor clamps, treats that whole takes out well mould from the lower mould behind the rubber sealing strip compression molding, then just can accomplish the drawing of patterns of rubber sealing strip with the mandrel with the core separation, has not only guaranteed the quality of product, has reduced the drawing of patterns degree of difficulty of product moreover.
In order to prevent the upper die from moving and slipping to hurt people, a second guide pillar is mounted on the lower surface of the upper die, a first guide pillar hole is formed in the core die relative to the second guide pillar, and when the upper die and the middle die are closed, the second guide pillar is inserted into the first guide pillar hole.
In order to reduce the demoulding difficulty, a first guide pillar is arranged on the adjacent core surface of the core mold, a second guide pillar hole is formed in the core relative to the first guide pillar, and the core mold and the core are detachably connected by inserting the first guide pillar into the second guide pillar hole. Before the part is formed, a first guide post arranged on a core die and a corresponding second guide post hole on the core are combined firstly and then are integrally placed into a lower die, the core die and the core are integrally taken out of the lower die after the part is formed, and then the core die is pulled towards two sides to realize the separation of the core die and the core so as to complete the demoulding of the part.
In order to prevent the position of the two core moulds from being installed wrongly, two first guide posts are arranged on the adjacent core surfaces of the core moulds, two second guide post holes are formed in the core relative to the two first guide posts, the diameters of the two first guide posts are different, and the diameters of the two second guide post holes are correspondingly different.
In order to facilitate overflow of the redundant rubber material, two sides of the first cavity are respectively provided with a first rubber overflow groove, and two sides of the fourth cavity are respectively provided with a second rubber overflow groove.
In order to ensure that the molded rubber sealing strip has stable size and high surface quality, the bottom of the core mold is provided with a first positioning boss, the lower mold is provided with a first positioning groove, and the first positioning boss is inserted into the first positioning groove when the middle mold and the lower mold are closed; and a second positioning boss is arranged at the bottom of the core, a second positioning groove is arranged on the lower die, and the second positioning boss is inserted into the second positioning groove when the middle die and the lower die are assembled.
Preferably, the side surface of the first positioning boss is provided with a first conical surface, and the side surface of the first positioning groove is provided with a second conical surface, so that the first positioning boss and the first positioning groove are in conical surface fit; the side of the second positioning boss is set to be a third conical surface, the side of the second positioning groove is set to be a fourth conical surface, so that the second positioning boss and the second positioning groove are in conical surface fit, and therefore the high-precision positioning of the conical surfaces can be utilized to ensure the stable size and the surface quality of the formed rubber sealing strip.
In order to facilitate mold opening, a first mold opening is formed in the upper surface of the core mold, and a second mold opening is formed in the upper surface of the lower mold.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model can be used for molding the special-shaped rubber sealing strip used on the airtight clamp;
2. the conical surface positioning is adopted between the middle die and the lower die of the utility model, so that the structural integrity is very strong, when the die works, the middle die and the lower die can realize automatic guiding and positioning, the positioning precision is high, and the formed sealing strip has stable size and high surface quality;
3. the utility model discloses make the well mould split type, during the use utilize the first guide pillar of installation on the well mould and the corresponding second guide pillar hole on the core to combine the two earlier and wholly put into the lower mould, wholly take out the well mould from the lower mould after part compression molding, then split the well mould and can accomplish the drawing of patterns of part, not only guaranteed the quality of product, reduced the drawing of patterns degree of difficulty moreover;
4. the utility model discloses the part qualification rate that the shaping was come out is more than 97%, and qualified part has all been used for airtight anchor clamps on, and sealed respond well.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of a rubber seal for an airtight jig.
Fig. 2 is a plan view of the rubber seal for airtight jigs.
Fig. 3 is a three-dimensional view of a rubber weather strip for an airtight jig.
Fig. 4 is a top view structural diagram of the utility model with the upper die removed.
Fig. 5 is a sectional view a-a of fig. 4.
Fig. 6 is a sectional view B-B of fig. 4.
Fig. 7 is a cross-sectional view taken along line C-C of fig. 4.
Fig. 8 is an exploded view of the present invention.
Fig. 9 is a three-dimensional structural view of a middle mold.
Figure 10 is a three dimensional view of two mandrels.
Figure 11 is a top view of two mandrels.
Fig. 12 is a three-dimensional view of the lower mold.
Fig. 13 is a plan view of the lower die.
FIG. 14 is a three-dimensional view of a core.
Detailed Description
The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.
For convenience of description, the relative positional relationship of the components, such as: the descriptions of the upper, lower, left, right, etc. are described with reference to the layout directions of the drawings in the specification, and do not limit the structure of the present patent.
As shown in fig. 4-14, an embodiment of the rubber sealing strip forming mold for an airtight fixture of the present invention includes an upper mold 1, a middle mold, and a lower mold 5.
The lower surface of the upper die 1 is provided with a second guide post 3 and a fifth cavity (not shown).
The middle die comprises a U-shaped core 6 and core dies 4 symmetrically arranged on two sides of the core 6, wherein a first guide post hole 43 is formed in the core die relative to the second guide post 3, a first guide post 2 is arranged on the core surface adjacent to the core die 4, a second guide post hole 61 is formed in the core 6 relative to the first guide post 2, when the middle die is used, the second guide post 3 is inserted into the first guide post hole 43, and the core die 4 and the core 6 are detachably connected by inserting the first guide post 2 into the second guide post hole 61. The upper surface of the core mold 4 is provided with a first cavity 41, the adjacent core surface of the core mold 4 is provided with a second cavity 42, the bottom surface of the core 6 is provided with a fourth cavity 63, and the first cavity 41, the second cavity 42 and the fourth cavity 63 are communicated.
The middle part of the lower die 5 is provided with a U-shaped groove 51, and a third cavity 52 is arranged in the U-shaped groove 51. After the upper die 1, the middle die and the lower die 5 are closed, the first cavity 41 and the fifth cavity are combined relatively, and the second cavity 42 and the third cavity 52 are combined relatively with the fourth cavity 63 in sequence to form a sealing strip forming cavity.
In order to facilitate the overflow of the excessive glue, the first glue overflow grooves 44 are respectively arranged on two sides of the first cavity 41, and the second glue overflow grooves 64 are respectively arranged on two sides of the fourth cavity 63.
For the stable and surface quality of assurance fashioned rubber sealing strip size, the bottom of mandrel 4 sets up first location boss 45, set up first location recess 54 on the lower mould 5, just the side of first location boss 45 sets up to first conical surface 46, the side of first location recess 54 sets up to second conical surface 55, well mould with during the compound die of lower mould 5, first location boss 45 inserts in the first location recess 54, first conical surface 46 with be the conical surface cooperation between the second conical surface 55.
Meanwhile, a second positioning boss 62 is arranged at the bottom of the core 6, a second positioning groove 56 is arranged on the lower die 5, a third conical surface 65 is arranged on the side surface of the second positioning boss 62, a fourth conical surface 57 is arranged on the side surface of the second positioning groove 56, when the middle die and the lower die 5 are closed, the second positioning boss 62 is inserted into the second positioning groove 56, and the third conical surface 65 is in conical surface fit with the fourth conical surface 57.
In order to facilitate mold opening, a first mold opening 47 is formed in the upper surface of the core mold 4, and a second mold opening 53 is formed in the upper surface of the lower mold 5.
The fixed section of the first guide post 2 is arranged on the core mold 4 in an interference fit mode by adopting H7/s6, the moving section adopts a large gap with a single side of 0.5mm to be matched with the second guide post hole 61 on the core mold 6 for use, and the first guide post 2 arranged on the core mold 4 and the second guide post hole 61 corresponding to the first guide post 2 on the core mold 6 do not play a positioning function and only play a role of connecting the core mold 4 and the core 6. In order to prevent the position installation error of the two core molds 4, two first guide posts 2 are arranged on the adjacent core surfaces of the core molds 4, two second guide post holes 61 are arranged on the core 6 opposite to the two first guide posts 2, the diameters of the two first guide posts 2 are different, and the diameters of the two second guide post holes 61 are correspondingly different.
The fixed section of the second guide post 3 is arranged on the upper die 1 in an interference fit mode through H7/s6, and the moving section is matched with the first guide post hole 43 on the core die 4 through a large gap with a single side of 0.5mm, so that the upper die 1 is prevented from moving and slipping to hurt people.
The forming process of the part can be divided into 3 processes of sizing material die filling, die pressing and die opening and part taking.
And (3) sizing material die filling process: placing the lower mold 5 (fig. 12) on the operation table, and laying the cut adhesive strips in the third cavity 52 of the lower mold 5 (fig. 12); combining a core mold 4 and a core 6 through a first guide post 2 and a second guide post hole 61 (figure 9) and putting the core mold 4 and the core 6 into a lower mold 5 together, and realizing conical surface positioning (figures 5 and 7) by utilizing a first positioning boss 45 (figure 10) on the core mold 4 and a second positioning boss 62 (figure 14) on the core 6 and a first positioning groove 54 (figure 12) and a second positioning groove 56 (figure 12) on the lower mold 5 respectively, so that the first cavity 41 and the fifth cavity are combined oppositely, and the second cavity 42 and the third cavity 52 are combined oppositely with the fourth cavity 63 in sequence to form a sealing strip forming cavity; the cut strips of glue are laid in the first cavity 41 and the second cavity 42 of the core mold 4 and the third cavity 52 of the lower mold 5 (fig. 11), and then the upper mold 1 is closed (fig. 8), and the mold filling process is completed.
And (3) compression molding: the whole mould is moved to a flat vulcanizing machine to be pressurized and heated, the solid adhesive tape laid in the sealing strip forming cavity can be changed into viscous flow to fill the cavity in the pressurizing and heating processes, redundant adhesive can flow out of the cavity through a first adhesive overflow groove 44 (shown in figures 11 and 14), and the pressurization-pressure relief is repeated for 2 to 3 times (used for exhausting gas in the sealing strip forming cavity), and then the vulcanization forming of the part can be completed after heat preservation and pressure maintaining for a certain time.
Opening the mold and taking out the part: after the forming is finished, the mold is moved to an operation table from a flat vulcanizing machine, a prying bar is inserted into a first mold opening 47 (figure 5) to pry open the upper mold 1 and remove the upper mold, then the core mold 4 and the core 6 are pried and removed integrally (figure 9), at the moment, the part is clamped in the core mold 4 and the core 6 (figure 9), then the core mold 4 is pulled outwards to separate the core mold 4 from the core 6 (figure 9), the part is left on the core mold 4 or the core 6, and the part is manually taken down to complete the demolding of the part.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and those skilled in the art can utilize the technical content disclosed above to make many possible variations and modifications to the technical solution of the present invention, or to modify equivalent embodiments with equivalent variations, without departing from the scope of the technical solution of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims (10)

1. A rubber sealing strip forming die for an airtight clamp comprises an upper die (1), a middle die and a lower die (5), and is characterized in that,
fifth cavities are symmetrically arranged at two ends of the lower surface of the upper die;
the middle die comprises a U-shaped core (6) and core dies (4) symmetrically arranged on two sides of the core, the core is detachably connected with the core dies, a first cavity (41) is arranged on the upper surface of the core dies, a second cavity (42) is arranged on the surface, adjacent to the core, of the core dies, a fourth cavity (63) is arranged on the bottom surface of the core, and the first cavity is communicated with the second cavity;
a U-shaped groove (51) is formed in the middle of the lower die, and a third cavity (52) is formed in the U-shaped groove;
after the upper die (1), the middle die and the lower die (5) are sequentially closed, the first cavity and the fifth cavity are combined oppositely, and the second cavity and the third cavity are sequentially combined oppositely with the fourth cavity to form a sealing strip forming cavity.
2. The mold for molding a rubber weather strip for an airtight jig according to claim 1, wherein a second guide post (3) is attached to a lower surface of the upper mold, a first guide post hole (43) is provided in the core mold with respect to the second guide post, and the second guide post is inserted into the first guide post hole when the upper mold and the middle mold are closed.
3. The mold for molding a rubber weather strip for an airtight fixture according to claim 1, wherein a first guide post (2) is provided adjacent to the core surface of the core mold, a second guide post hole (61) is provided in the core mold opposite to the first guide post, and the core mold and the core are detachably connected by inserting the first guide post into the second guide post hole.
4. The mold for molding a rubber weather strip for an airtight jig according to claim 3, wherein two first guide posts (2) are provided adjacent to the core surface of the core mold, two second guide post holes (61) are provided in the core mold opposite to the two first guide posts, and the diameters of the two first guide posts are different and the diameters of the two second guide post holes are also different.
5. The rubber weather strip molding die for the airtight jig according to claim 1, wherein first glue overflow grooves (44) are provided on both sides of the first cavity of the upper surface of the core mold, respectively, and second glue overflow grooves (64) are provided on both sides of the fourth cavity of the core mold, respectively.
6. The forming mold of rubber weather strip for airtight jig according to claim 1, wherein a first positioning boss (45) is provided at the bottom of the core mold, a first positioning groove (54) is provided on the lower mold, and the first positioning boss is inserted into the first positioning groove when the middle mold and the lower mold are closed.
7. The rubber sealing strip forming die for the airtight clamp according to claim 6, wherein the side surface of the first positioning boss is provided with a first tapered surface (46), and the side surface of the first positioning groove is provided with a second tapered surface (55), so that the first positioning boss and the first positioning groove are in tapered surface fit.
8. The mold for molding a rubber sealing strip for an airtight fixture according to claim 1, wherein a second positioning boss (62) is provided at the bottom of the core, a second positioning groove (56) is provided on the lower mold, and the second positioning boss is inserted into the second positioning groove when the middle mold and the lower mold are closed.
9. The rubber sealing strip molding die for the airtight clamp according to claim 8, wherein the side surface of the second positioning boss is provided with a third tapered surface (65), and the side surface of the second positioning groove is provided with a fourth tapered surface (57), so that the second positioning boss and the second positioning groove are in tapered surface fit.
10. The rubber weather strip molding die for an airtight jig according to claim 1, wherein a first die opening (47) is provided on an upper surface of the core die, and a second die opening (53) is provided on an upper surface of the lower die.
CN202220053155.1U 2022-01-10 2022-01-10 Rubber sealing strip forming die for airtight clamp Active CN217073091U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220053155.1U CN217073091U (en) 2022-01-10 2022-01-10 Rubber sealing strip forming die for airtight clamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220053155.1U CN217073091U (en) 2022-01-10 2022-01-10 Rubber sealing strip forming die for airtight clamp

Publications (1)

Publication Number Publication Date
CN217073091U true CN217073091U (en) 2022-07-29

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ID=82542598

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202220053155.1U Active CN217073091U (en) 2022-01-10 2022-01-10 Rubber sealing strip forming die for airtight clamp

Country Status (1)

Country Link
CN (1) CN217073091U (en)

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