Hollow closed sealing rubber mat mold system

Abstract

The utility model relates to a hollow closed sealing rubber mat mold system. Products produced by an existing die of a sealing rubber mat of a hollow closed structure are low in qualified rate of appearance quality and size, and a die core cannot be positioned. The mold comprises a sealing rubber mat semi-finished product mold and a sealing rubber mat finished product mold, the sealing rubber mat semi-finished product mold comprises a semi-finished product upper mold, a semi-finished product middle mold, a metal mold core and a semi-finished product lower mold, and a plurality of positioning columns for positioning the metal mold core are arranged on the semi-finished product lower mold; the sealing rubber mat finished product mold comprises a finished product upper mold, a finished product middle mold and a finished product lower mold, and a plurality of sealing rubber mat hole site marks are arranged on the finished product lower mold; cloth clamping grooves are formed in the sealing rubber mat semi-finished product mold and the sealing rubber mat finished product mold. According to the utility model, the metal mold core is positioned through the positioning column, so that the metal mold core is not easy to deviate, and redundant fabric is clamped and fixed by adopting the cloth clamping space, so that the appearance quality of a product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing component molding, in particular to a hollow closed sealing rubber pad mold system. Background Art

[0002] Hollow closed sealing gaskets used in aircraft equipment racks are mostly made of vulcanized silicone rubber and fabric. Rubber, as the main material, has good compression resilience, which provides contact stress for the sealing gasket to achieve sealing.

[0003] Hollow, closed-cell rubber gaskets used as sealing elements on aircraft equipment racks effectively prevent air leakage, reduce fuel consumption, and improve aircraft comfort and stability. They also cushion the impact and vibration of the equipment racks, protecting the aircraft's structure and components from damage. They also effectively isolate noise and prevent the intrusion of external impurities such as dust and moisture, further ensuring the safety and performance of the aircraft's internal equipment.

[0004] In the existing technology, the inflation molding method of the hollow closed structure sealing gasket requires special inflation equipment, the molding process is complicated, and the semi-finished product preparation process has high requirements. The appearance quality and size of the produced products are often difficult to meet the expected goals, and the product qualification rate is low; another molding method is to use a water-soluble "salt core" as the mold core for molding. After molding, water is injected into the seal to dissolve the "salt core", but the mold core is easily deformed by the flow of the rubber and broken during the molding process, resulting in changes in the internal shape of the product, and the mold core cannot be positioned, which easily causes uneven wall thickness of the product cavity and "eccentricity" phenomenon.

[0005] Therefore, there is an urgent need for a hollow closed sealing pad mold system that can position the mold core and improve the product appearance quality. Summary of the Invention

[0006] The purpose of the utility model is to provide a hollow closed sealing rubber pad mold system, so as to at least solve the problems that the existing mold cannot locate the mold core and the appearance quality of the produced products is low.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:

[0008] A hollow closed sealing rubber gasket mold system, comprising a sealing rubber gasket semi-finished product mold and a sealing rubber gasket finished product mold;

[0009] The semi-finished mold for the sealing rubber gasket comprises a semi-finished upper mold, a semi-finished middle mold, a metal mold core and a semi-finished lower mold. The semi-finished upper mold, the semi-finished middle mold, the metal mold core and the semi-finished lower mold together constitute a cavity of the semi-finished sealing rubber gasket. The semi-finished lower mold is provided with a plurality of positioning columns for positioning the metal mold core.

[0010] The finished sealing gasket mold comprises a finished upper mold, a finished middle mold and a finished lower mold, wherein the finished upper mold, the finished middle mold and the finished lower mold together constitute a cavity of the finished sealing gasket, and the finished lower mold is provided with a plurality of sealing gasket hole position marks;

[0011] The semi-finished mold for the sealing rubber gasket and the finished mold for the sealing rubber gasket are both provided with cloth clamping grooves.

[0012] Furthermore, the semi-finished product center mold includes a semi-finished product inner center mold and a semi-finished product outer center mold, and the semi-finished product outer center mold and the semi-finished product inner center mold are separate.

[0013] Furthermore, the finished product middle mold includes a finished product inner middle mold and a finished product outer middle mold, and the finished product outer middle mold and the finished product inner middle mold are split.

[0014] Furthermore, the metal mold core includes a plurality of sub-mold cores, and the metal mold core is provided with a plurality of mounting holes corresponding to the positioning columns.

[0015] Furthermore, several sections of the sub-mold core are connected through multiple pin interfaces and multiple dovetail groove interfaces.

[0016] Furthermore, the cloth clamping groove is an annular groove structure.

[0017] Furthermore, a glue flow groove is provided in the cloth clamping space of the cloth clamping groove.

[0018] Furthermore, a plurality of positioning holes are provided on the semi-finished product middle mold and the finished product middle mold.

[0019] Furthermore, the semi-finished product upper mold and the finished product upper mold are both provided with a plurality of positioning pins corresponding to the positioning holes.

[0020] Furthermore, a plurality of arc-shaped cutting marking lines are provided on the lower die of the semi-finished product.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] The utility model provides a hollow closed sealing rubber gasket mold system, comprising a sealing rubber gasket semi-finished product mold and a sealing rubber gasket finished product mold. The metal mold core is positioned by a positioning column on the semi-finished product lower mold, so that the metal mold core is not easy to be eccentric, thereby ensuring that the wall thickness of the hollow part of the sealing rubber gasket is uniform, and the dimensional stability and uniformity are good; the utility model is also provided with a cloth clamping groove, and the cloth clamping space is used to clamp and fix excess fabric, thereby avoiding the phenomenon of cloth clamping and wrinkling of the fabric during the pressure process, thereby improving the appearance quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying any creative work, they can also obtain drawings of other embodiments based on these drawings.

[0024] Figure 1 This is a main cross-sectional view of a semi-finished mold of a sealing rubber gasket of the utility model;

[0025] Figure 2 This is a cross-sectional view of the mold for the finished product of the sealing rubber gasket of the utility model;

[0026] Figure 3 yes Figure 1 Middle BB cross-section;

[0027] Figure 4 yes Figure 1 Middle AA section;

[0028] Figure 5 This is the main view of the metal mold core;

[0029] The symbols in the figure are:

[0030] 1-semi-finished product mold for sealing rubber gasket, 2-finished product mold for sealing rubber gasket, 3-semi-finished product upper mold, 4-semi-finished product middle mold, 41-semi-finished product inner mold, 42-semi-finished product outer mold, 5-metal mold core, 51-mounting hole, 52-latch interface, 53-dovetail groove interface, 6-semi-finished product lower mold, 61-locating column, 7-finished product upper mold, 8-finished product middle mold, 81-finished product inner mold, 82-finished product outer mold, 9-finished product lower mold, 10-cloth clamping groove, 11-glue flow groove, 12-locating pin. DETAILED DESCRIPTION

[0031] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "disposed" should be understood in a broad sense. For example, they may refer to fixed connection or disposition, detachable connection or disposition, or integral connection or disposition. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0034] Example:

[0035] This embodiment provides a hollow closed sealing gasket mold system, including a sealing gasket semi-finished product mold 1 and a sealing gasket finished product mold 2. The sealing gasket semi-finished product is first made by the sealing gasket semi-finished product mold 1. Since the bottom of the sealing gasket semi-finished product made for the first time is relatively thin, the bottom of the sealing gasket semi-finished product is thickened by the sealing gasket finished product mold 2 to make a complete sealing gasket.

[0036] Specifically, if Figure 3 and Figure 4 As shown, the sealing gasket semi-finished product mold 1 includes a semi-finished product upper mold 3, a semi-finished product middle mold 4, a metal mold core 5 and a semi-finished product lower mold 6. The semi-finished product upper mold 3, the semi-finished product middle mold 4, the metal mold core 5 and the semi-finished product lower mold 6 together constitute the mold cavity of the sealing gasket semi-finished product. Six positioning columns 61 for positioning the metal mold core 5 are fixed on the semi-finished product lower mold 6, and two cutting arc marking lines are marked on the semi-finished product lower mold 6.

[0037] Among them, the semi-finished product center mold 4 includes a semi-finished product inner center mold 41 and a semi-finished product outer center mold 42. The semi-finished product outer center mold 42 and the semi-finished product inner center mold 41 are split. The semi-finished product inner center mold 41 is arranged in the middle of the semi-finished product outer center mold 42. The semi-finished product inner center mold 41 and the semi-finished product outer center mold 42 can serve as cloth pressing tooling.

[0038] like Figure 5As shown, in this embodiment, the metal mold core 5 includes four sub-mold cores, which are two straight segments and two semicircular structures respectively. The four sub-mold cores are connected into a whole through two pin interfaces 52 and two dovetail groove interfaces 53, and six mounting holes 51 corresponding to the positioning columns 61 are provided on the metal mold core 5. There are two mounting holes 51 on each of the two straight segments, and one mounting hole 51 on each of the two semicircular structures. The four sub-mold cores of the metal mold core 5 are installed on the positioning columns 61 of the semi-finished lower mold 6 through the mounting holes 51 in turn, and are connected through the pin interface 52 and the dovetail groove interface 53. The two pin interfaces 52 and the two dovetail groove interfaces 53 are arranged diagonally, so that the four sub-mold cores are more tightly connected.

[0039] The metal mold core 5 is positioned by the positioning column 61 on the semi-finished lower mold 6, so that the metal mold core 5 is not easily eccentric, thereby ensuring that the wall thickness of the hollow part of the sealing gasket is uniform, and the dimensional stability and uniformity are good. In addition, the metal mold core 5 is covered with a layer of wear-resistant fabric. In this embodiment, the wear-resistant fabric is polyester. Of course, in other embodiments, the wear-resistant fabric can also be other wear-resistant fabrics, without limitation to this.

[0040] Further, such as Figure 2 As shown, the sealing gasket finished product mold 2 includes a finished product upper mold 7, a finished product middle mold 8 and a finished product lower mold 9. The finished product upper mold 7, the finished product middle mold 8 and the finished product lower mold 9 together constitute the cavity of the sealing gasket finished product. Sixteen sealing gasket hole position marks are set on the finished product lower mold 9.

[0041] The finished product middle mold 8 includes a finished product inner middle mold 81 and a finished product outer middle mold 82. The finished product inner middle mold 81 is arranged in the middle of the finished product outer middle mold 82. The finished product outer middle mold 82 and the finished product inner middle mold 81 are split. The finished product inner middle mold 81 and the finished product outer middle mold 82 can serve as cloth pressing tooling.

[0042] In this embodiment, the semi-finished product upper mold 3 and the finished product upper mold 7 are the same upper mold, and the semi-finished product middle mold 4 and the finished product middle mold 8 are the same middle mold. During the production process, the semi-finished product lower mold 6 can be replaced with the finished product lower mold 9.

[0043] like Figure 1 As shown, three positioning holes are provided on the semi-finished middle mold 4 and the finished middle mold 8, and three positioning pins 12 corresponding to the positioning holes are fixed on the semi-finished upper mold 3 and the finished upper mold 7. The positioning holes and the positioning pins 12 are used for positioning and matching, so that the upper mold and the middle mold can be quickly fitted together.

[0044] A cloth clamping groove 10 is provided between the semi-finished product middle mold 4 and the finished product middle mold 8 and the finished product lower mold 9. The cloth clamping groove 10 is an annular groove structure. The cloth clamping space width is 30 mm and the depth is 0.3 mm. A glue flow groove 11 is provided in the cloth clamping space of the cloth clamping groove 6. The cloth clamping space is used to clamp and fix the excess fabric, avoiding the occurrence of cloth clamping and wrinkles in the fabric during the pressure process, thereby improving the appearance quality of the product.

[0045] The cavity surface of the semi-finished sealing rubber gasket mold 1 and the cavity surface of the finished sealing rubber gasket mold 2 are both coated with a release agent.

[0046] The usage process of this embodiment is as follows:

[0047] 1. Apply release agent to the surfaces of the semi-finished upper mold 3, the semi-finished middle mold 4, the metal mold core 5, the semi-finished lower mold 6 and the finished lower mold 9. Then, stick a layer of semi-finished rubber sheet with a thickness of 1.0 mm along the metal mold core 5, and cover the rubber surface with a layer of wear-resistant fabric that has been acidified, tackified and rubbed.

[0048] Among them, the fabric viscosity increasing treatment is to soak the fabric in 5% to 20% viscosity increasing liquid, and then dry the fabric after 30 minutes to 4 hours for later use;

[0049] Thickening solutions include A151 ethanol solution and ST608 ethanol solution;

[0050] Fabric glue rubbing treatment: the fabric is single-sided glue rubbing on a three-roller glue rubbing machine with a glue thickness of 0.15mm.

[0051] 2. Place the semi-finished inner mold 41 inside the metal mold core 5 covered with rubber and fabric, tighten the fabric at the four guide corners of the sealing gasket to make it close to the inner film to avoid unevenness and wrinkles on the fabric, then close the semi-finished outer mold 42 and pull out the excess fabric along the cloth pressing groove.

[0052] 3. Install the semi-finished upper mold 3 onto the semi-finished middle mold 4 so that the semi-finished upper mold 3 and the semi-finished middle mold 4 fit together. Then open the semi-finished upper mold 3, remove the semi-finished middle mold 4, and observe whether there is any cloth stuck, unevenness, or excess rubber. If so, remove the excess rubber between the semi-finished lower mold 6 and the semi-finished middle mold 4, re-tighten the wear-resistant fabric, close the semi-finished middle mold 4, and finally achieve the fit between the semi-finished middle mold 4 and the semi-finished upper mold 3.

[0053] 4. Place the semi-finished sealing rubber gasket mold 1 into a flat vulcanizer and vulcanize it at 155-165°C and a certain pressure for 29-31 minutes.

[0054] 5. Open the semi-finished product upper mold 3 and the semi-finished product middle mold 4 of the semi-finished product mold 1 of the sealing rubber gasket, and take out the semi-finished product of the sealing rubber gasket.

[0055] 6. Use a surgical blade to cut an arc-shaped L-shaped cut at the two cutting arc marking lines, and pull out the metal mold core 5 from the two locations respectively.

[0056] 7. Use room temperature vulcanized silicone rubber to bond the cut to prevent the rubber from flowing into the hollow structure during secondary molding, affecting the sealing effect.

[0057] 8. Leave the semi-finished sealing gasket for 24 hours.

[0058] 9. Insert the parked semi-finished sealing gasket into the cavity of the semi-finished middle mold 4 and the semi-finished upper mold 3, replace the semi-finished lower mold 6 with the finished lower mold 9, stick a layer of 0.5mm thick film on the finished lower mold 9, cover it with a layer of wear-resistant fabric, pull out the excess fabric along the cloth pressing groove, and close the mold.

[0059] 10. Place the finished sealing rubber gasket mold 2 into a flat vulcanizer and vulcanize it at 155-165°C and a certain pressure for 29-31 minutes.

[0060] 11. Open the finished product lower mold 9 of the sealing rubber gasket finished product mold 2 and take out the sealing rubber gasket finished product.

[0061] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art of the present invention can make some simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A hollow closed sealing rubber pad mold system, characterized by: It comprises a semi-finished sealing rubber gasket mold (1) and a finished sealing rubber gasket mold (2); The semi-finished mold (1) for the sealing rubber gasket comprises a semi-finished upper mold (3), a semi-finished middle mold (4), a metal mold core (5) and a semi-finished lower mold (6); the semi-finished upper mold (3), the semi-finished middle mold (4), the metal mold core (5) and the semi-finished lower mold (6) together constitute a mold cavity of the semi-finished sealing rubber gasket; the semi-finished lower mold (6) is provided with a plurality of positioning columns (61) for positioning the metal mold core (5); The finished sealing rubber gasket mold (2) comprises a finished product upper mold (7), a finished product middle mold (8) and a finished product lower mold (9); the finished product upper mold (7), the finished product middle mold (8) and the finished product lower mold (9) together constitute a mold cavity of the finished sealing rubber gasket; the finished product lower mold (9) is provided with a plurality of sealing rubber gasket hole position marks; The semi-finished sealing rubber gasket mold (1) and the finished sealing rubber gasket mold (2) are both provided with a cloth clamping groove (10).

2. The hollow closed sealing rubber pad mold system according to claim 1, characterized in that: The semi-finished product middle mold (4) comprises a semi-finished product inner middle mold (41) and a semi-finished product outer middle mold (42), and the semi-finished product outer middle mold (42) and the semi-finished product inner middle mold (41) are separate.

3. The hollow closed sealing rubber pad mold system according to claim 1, characterized in that: The finished product middle mold (8) comprises a finished product inner middle mold (81) and a finished product outer middle mold (82), and the finished product outer middle mold (82) and the finished product inner middle mold (81) are separate.

4. The hollow closed sealing rubber pad mold system according to claim 1, characterized in that: The metal mold core (5) includes a plurality of sub-mold cores, and the metal mold core (5) is provided with a plurality of mounting holes (51) corresponding to the positioning columns (61).

5. The hollow closed sealing rubber pad mold system according to claim 4, characterized in that: Several sections of the sub-mold core are connected via multiple latch interfaces (52) and multiple dovetail groove interfaces (53).

6. The hollow closed sealing rubber pad mold system according to claim 1, characterized in that: The cloth clamping groove (10) is an annular groove structure.

7. The hollow closed sealing rubber pad mold system according to claim 1, characterized in that: A glue flow groove (11) is provided in the cloth clamping space of the cloth clamping groove (10).

8. The hollow closed sealing rubber pad mold system according to claim 1, characterized in that: The semi-finished product middle mold (4) and the finished product middle mold (8) are both provided with a plurality of positioning holes.

9. The hollow closed sealing rubber pad mold system according to claim 8, characterized in that: The semi-finished product upper mold (3) and the finished product upper mold (7) are both provided with a plurality of positioning pins (12) corresponding to the positioning holes.

10. The hollow closed sealing rubber pad mold system according to claim 1, characterized in that: The semi-finished product lower die (6) is provided with a plurality of arc-shaped cutting marking lines.

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