A sealing strip hot vulcanization mold

Abstract

The application discloses a sealing strip hot joint vulcanization mold, which comprises a glue injection plate, an upper mold plate, a middle mold plate and a lower mold plate, the glue injection plate is arranged above the upper mold plate, the middle mold plate is arranged between the upper mold plate and the lower mold plate, and the upper mold plate, the middle mold plate and the lower mold plate are mutually embedded to form a cavity for placing a product to be bonded, a recessed glue injection surface is formed on the upper mold plate above the cavity, a glue injection hole is arranged at the bottom of the recessed glue injection surface, the glue injection hole is communicated with the cavity, a protruding glue injection platform is arranged below the glue injection plate above the recessed glue injection surface, the protruding glue injection platform is mutually embedded with the recessed glue injection surface, a glue injection cavity is formed between the protruding glue injection platform and the recessed glue injection surface, and bonding rubber is injected into the cavity through the glue injection hole. Through the cooperation of the inclined surfaces, the positioning precision is high, the cavity can be designed as a single cavity or multiple cavities, the size of the bonding part is consistent with the product, the strength is equivalent to the product body, and the risk of interface fracture is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to a sealing strip hot vulcanization mold, belonging to the field of vulcanization mold. BACKGROUND

[0002] At present, the sealing strip for rotary support on the market mainly has two production processes of continuous mold pressing vulcanization and extrusion. The continuous mold pressing vulcanization mold has high cost and low production efficiency, while the extrusion vulcanization production process and mold processing cost are low and the production efficiency is high. The extrusion vulcanization not only has high production efficiency, but also can design complex structure according to customer requirements.

[0003] The traditional straight rubber seal is bonded into a ring by using glue, and the interface strength is relatively weak, and the glue has poor oil resistance, and there is a risk of interface fracture during use. SUMMARY

[0004] The present application aims to solve the problem of sealing strip bonding, and provides a rubber sealing strip hot vulcanization mold, which is bonded into a ring by using rubber vulcanization, and the interface strength is equivalent to that of the body part of the sealing strip.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0006] A sealing strip hot vulcanization mold, comprising a glue injection plate, an upper mold plate, a middle mold plate and a lower mold plate, the glue injection plate is arranged above the upper mold plate, the middle mold plate is arranged between the upper mold plate and the lower mold plate, and the upper mold plate, the middle mold plate and the lower mold plate are mutually embedded to form a cavity for placing the product to be bonded, a recessed glue injection surface is formed on the upper mold plate above the cavity, the bottom of the recessed glue injection surface is provided with a glue injection hole, the glue injection hole is communicated with the cavity, a protruding glue injection platform is arranged below the glue injection plate above the recessed glue injection surface, the protruding glue injection platform and the recessed glue injection surface are mutually embedded, and a glue injection cavity is formed between them, and the bonding rubber in the glue injection cavity is injected into the cavity through the glue injection hole.

[0007] Further, the two ends of the glue injection plate are respectively provided with a first positioning pin hole and a first stepped surface, the two ends of the upper mold plate are respectively provided with a second positioning pin hole, a second stepped surface and a third positioning pin hole, wherein the second stepped surface and the third positioning pin hole are located on the same side, the second stepped surface is located above, and the third positioning pin hole is located below, the two ends of the lower mold plate are respectively provided with a fourth positioning pin hole and a fifth positioning pin hole, the first positioning pin hole, the second positioning pin hole and the fourth positioning pin hole are cooperatively positioned by a first positioning pin, the third positioning pin hole and the fifth positioning pin hole are cooperatively positioned by a second positioning pin, and the first stepped surface and the second stepped surface cooperatively form a mold stripping groove.

[0008] Further, the lower surface of the upper die plate is provided with a first limiting surface, a second limiting surface and a third limiting surface, the upper surface of the middle die plate is provided with a fourth limiting surface and a fifth limiting surface, the lower surface is provided with a sixth limiting surface and a seventh limiting surface, and the upper surface of the lower die plate is provided with an eighth limiting surface, a ninth limiting surface and a tenth limiting surface; wherein the first limiting surface and the eighth limiting surface are fitted after installation, the second limiting surface and the fourth limiting surface are fitted after installation, the third limiting surface and the fifth limiting surface are fitted after installation, the sixth limiting surface and the ninth limiting surface are fitted after installation, and the seventh limiting surface and the tenth limiting surface are fitted after installation.

[0009] Further, the lower surface of the upper die plate is provided with a first limiting surface, a second limiting surface and a third limiting surface, the upper surface of the middle die plate is provided with a fourth limiting surface and a fifth limiting surface, the lower surface is provided with a sixth limiting surface and a seventh limiting surface, and the upper surface of the lower die plate is provided with an eighth limiting surface, a ninth limiting surface and a tenth limiting surface; wherein the first limiting surface and the eighth limiting surface are fitted after installation, the second limiting surface and the fourth limiting surface are fitted after installation, the third limiting surface and the fifth limiting surface are fitted after installation, the sixth limiting surface and the ninth limiting surface are fitted after installation, and the seventh limiting surface and the tenth limiting surface are fitted after installation.

[0010] Further, the first tear edge groove, the second tear edge groove and the third tear edge groove are respectively provided with a first glue storage groove, a first glue storage groove and a third glue storage groove away from the cavity, and each glue storage groove is used for storing excess glue.

[0011] Further, the first glue storage groove is formed by a first glue storage groove opened in the upper die plate, the second glue storage groove is formed by a second glue storage groove opened in the lower die plate, and the third glue storage groove is formed by a third glue storage groove opened in the lower die plate.

[0012] Further, the upper and lower sides of the end portion of the middle die plate are respectively provided with an upper stepped groove and a lower stepped groove, the upper stepped groove is used as a stripping groove of the upper die plate and the middle die plate, and the lower stepped groove is used as a stripping groove of the lower die plate and the middle die plate.

[0013] Further, the cavity is formed by a first cavity surface opened in the upper die plate, a second cavity surface opened in the middle die plate and a third cavity surface opened in the lower die plate.

[0014] Further, the middle glue injection port position of the cavity is consistent with the product size, and the size of the two ends is slightly contracted.

[0015] The beneficial effects of the present application are that the hot joint vulcanization mold structure provided by the present application has the same size as the product at the bonding position, the strength is equivalent to the product body, and the risk of interface fracture is greatly reduced. The mold structure is divided into a glue injection mold plate, an upper die plate, a middle die plate, a lower die plate and a positioning pin, each part is matched through a slope, the positioning precision is high, and the cavity can be designed as a single cavity or multiple cavities.

[0016] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and the attendant drawings or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a whole structure diagram of the hot vulcanization mold of the present application.

[0018] Figure 2 is a structure diagram of the glue injection plate of the present application.

[0019] Figure 3 is a structure diagram of the upper mold plate of the present application.

[0020] Figure 4 is a structure diagram of the lower mold plate of the present application.

[0021] Figure 5 is a structure diagram of the middle mold plate of the present application.

[0022] Figure 6 is a structure diagram of the positioning pin of the present application.

[0023] In the drawing, marked as: 1, glue injection plate, 2, upper mold plate, 3, middle mold plate, 4, lower mold plate, 5, cavity, 6, positioning pin, a-1, first edge tearing groove, a-2, second edge tearing groove, a-3, third edge tearing groove, b-1, first glue storage groove, b-2, second glue storage groove, b-3, third glue storage groove, 1-1, protruding glue injection platform, 1-2, first positioning pin hole, 1-3, first step surface, 2-1, second positioning pin hole, 2-2, recessed glue injection surface, 2-3, second step surface, 2-4, third positioning pin hole, 2-5, second limiting surface, 2-6, third limiting surface, 2-7, first glue storage groove, 2-8, second V-shaped groove, 2-9, glue injection hole, 2-10, first cavity surface, 2-11, first V-shaped groove, 2-12, first limiting surface, 3-1, lower step groove, 3-2, sixth limiting surface, 3-3, third V-shaped groove, 3-4, second cavity surface, 3-5, fourth V-shaped groove, 3-6, fourth limiting surface, 3-7, upper step groove, 3-8, fifth limiting surface, 3-9, seventh limiting surface, 4-1, fourth positioning pin hole, 4-2, eighth limiting surface, 4-3, third glue storage groove, 4-4, fifth V-shaped groove, 4-5, third cavity surface, 4-6, sixth V-shaped groove, 4-7, second glue storage groove, 4-8, ninth limiting surface, 4-9, fifth positioning pin hole, 4-10, tenth limiting surface, 6-1, first positioning pin, 6-2, second positioning pin. DETAILED DESCRIPTION

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] like Figure 1 As shown, a hot-welding vulcanization mold includes a glue injection plate 1, an upper template 2, a middle template 3, a lower template 4, a cavity 5, positioning pins 6, a first tear-off groove a-1, a second tear-off groove a-2, a third tear-off groove a-3, a first glue storage tank b-1, a second glue storage tank b-2, and a third glue storage tank b-3. The first tear-off groove a-1, the second tear-off groove a-2, and the third tear-off groove a-3 facilitate the removal of flash from the product after hot-welding vulcanization. The first glue storage tank b-1, the second glue storage tank b-2, and the third glue storage tank b-3 facilitate the storage of excess filler glue, ensuring the dimensional accuracy of the vulcanization bonding position.

[0026] like Figures 2-6 As shown, the lower surface of the upper template 2 is provided with a first limiting surface 2-12, a second limiting surface 2-5, and a third limiting surface 2-6; the upper surface of the middle template 3 is provided with a fourth limiting surface 3-6 and a fifth limiting surface 3-8, and the lower surface is provided with a sixth limiting surface 3-2 and a seventh limiting surface 3-7; the upper surface of the lower template 4 is provided with an eighth limiting surface 4-2, a ninth limiting surface 4-8, and a tenth limiting surface 4-10; wherein, the first limiting surface 2-12 and the eighth limiting surface 4-2 are fitted together after installation, the second limiting surface 2-5 and the fourth limiting surface 3-6 are fitted together after installation, the third limiting surface 2-6 and the fifth limiting surface 3-8 are fitted together after installation, the sixth limiting surface 3-2 and the ninth limiting surface 4-8 are fitted together after installation, and the seventh limiting surface 3-7 and the tenth limiting surface 4-10 are fitted together after installation. Each limiting surface is inlaid and cooperates to limit each other, ensuring the dimensional accuracy of the cavity.

[0027] The lower surface of the upper template 2 is provided with a first V-groove 2-11 and a second V-groove 2-8 on both sides near the cavity 5, the middle template 3 is provided with a third V-groove 3-3 and a fourth V-groove 3-5 on the side near the cavity, and the upper surface of the lower template 4 is provided with a fifth V-groove 4-4 and a sixth V-groove 4-6 on both sides near the cavity; wherein, the second V-groove 2-8 and the fourth V-groove 3-5 cooperate to form a first tearing groove b-1, the third V-groove 3-3 and the sixth V-groove 4-6 cooperate to form a second tearing groove b-2, and the first V-groove 2-11 and the fifth V-groove 4-4 cooperate to form a third tearing groove b-3.

[0028] The first positioning pin 6-1 cooperates with the fourth positioning pin hole 4-1, the second positioning pin hole 2-1 and the first positioning pin hole 1-2 to play a positioning role; the second positioning pin 6-2 cooperates with the fifth positioning pin hole 4-9 and the third positioning pin hole 2-4 to play a positioning role.

[0029] The cavity 5 is formed by the first cavity surface 2-10 opened on the upper die plate, the second cavity surface 3-4 opened on the middle die plate and the third cavity surface 4-5 opened on the lower die plate.

[0030] One end of the glue injection plate 1 is provided with a first stepped surface 1-3, and the same end of the upper die plate 2 is provided with a second stepped surface 2-3; the first stepped surface 1-3 and the second stepped surface 2-3 cooperate to form a glue injection plate and an upper die plate stripping groove.

[0031] The upper die plate 2 above the cavity 5 is provided with a recessed glue injection surface 2-2, the bottom of the recessed glue injection surface 2-2 is provided with a glue injection hole 2-9, the glue injection hole 2-9 is in communication with the cavity 5, and the lower side of the glue injection plate 1 above the recessed glue injection surface 2-2 is provided with a protruding glue injection platform 1-1; the protruding glue injection platform 1-1 and the recessed glue injection surface 2-1 form a glue injection cavity.

[0032] In a specific embodiment of the present application, the glue injection plate 1 is placed on the upper die plate 2, the protruding glue injection platform 1-1 on the glue injection plate 1 and the recessed glue injection platform 2-1 on the upper die plate cooperate to form a glue injection cavity, and the rubber in the glue injection cavity enters the cavity 5 through the glue injection hole 2-9 after pressure transmission. The upper die plate 2 and the middle die plate 3 are inlaid cooperation through the limiting surface, the middle die plate 3 and the lower die plate 4 are inlaid cooperation through the limiting surface, and the position accuracy of the cavity is ensured.

[0033] In use, first, open the glue injection plate 1 and the upper mold plate 2, place the middle mold plate 3 in the inlay position of the lower mold plate 4, then place the product in the cavity, the product joint is below the glue injection hole 2-9, and a certain distance is kept between the joints. Then place the upper mold plate 2, let the corresponding limiting surface inlay, the positioning pin hole is matched with the second positioning pin to limit the left and right movement of the upper mold plate and the lower mold plate, ensure that the glue injection hole position is aligned with the joint position. Then place the rubber for bonding in the recessed glue injection surface 2-2 of the upper mold plate 2, then place the glue injection plate 1, the positioning pin hole of the glue injection plate is matched with the first positioning pin, prevent the glue injection plate from rotating and damaging the mold during the pressure process. Then the rubber in the glue injection cavity enters the cavity 5 through the glue injection hole 2-9 to vulcanize and bond the joint, after vulcanization is completed, the bonded product is taken out by opening the glue injection plate 1, the upper mold plate 2 and the middle mold plate.

[0034] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the above examples do not limit the protection scope of the present application in any form, and any technical solutions obtained by equivalent replacement or the like fall within the protection scope of the present application.

[0035] The parts not involved in the present application are the same as or can be realized by using the prior art.

Claims

1. A mold for hot vulcanization of a sealing strip, characterized in that The injection glue plate is provided above the upper mold plate, the middle mold plate is provided between the upper mold plate and the lower mold plate, and the upper mold plate, the middle mold plate and the lower mold plate are mutually embedded to form a cavity for placing the product to be bonded, the upper mold plate above the cavity is provided with a recessed injection glue surface, the bottom of the recessed injection glue surface is provided with an injection glue hole, the injection glue hole is communicated with the cavity, the injection glue plate below the recessed injection glue surface is provided with a protruding injection glue platform, the protruding injection glue platform and the recessed injection glue surface are mutually embedded, and an injection glue cavity is formed between the two, and the injection glue cavity is injected into the cavity through the injection glue hole. The two ends of the injection glue plate are respectively provided with a first positioning pin hole and a first stepped surface, the two ends of the upper mold plate are respectively provided with a second positioning pin hole, a second stepped surface and a third positioning pin hole, the second stepped surface and the third positioning pin hole are located on the same side, the second stepped surface is located above, and the third positioning pin hole is located below, the two ends of the lower mold plate are respectively provided with a fourth positioning pin hole and a fifth positioning pin hole, the first positioning pin hole, the second positioning pin hole and the fourth positioning pin hole are cooperatively positioned by a first positioning pin, the third positioning pin hole and the fifth positioning pin hole are cooperatively positioned by a second positioning pin, and the first stepped surface and the second stepped surface cooperatively form a mold stripping groove. The lower surface of the upper mold plate is provided with a first limiting surface, a second limiting surface and a third limiting surface, the upper surface of the middle mold plate is provided with a fourth limiting surface and a fifth limiting surface, the lower surface of the middle mold plate is provided with a sixth limiting surface and a seventh limiting surface, and the upper surface of the lower mold plate is provided with an eighth limiting surface, a ninth limiting surface and a tenth limiting surface; wherein the first limiting surface is attached to the eighth limiting surface after installation, the second limiting surface is attached to the fourth limiting surface after installation, the third limiting surface is attached to the fifth limiting surface after installation, the sixth limiting surface is attached to the ninth limiting surface after installation, and the seventh limiting surface is attached to the tenth limiting surface after installation. The two sides of the lower surface of the upper mold plate close to the cavity are respectively provided with a first V-shaped groove and a second V-shaped groove, the side end of the middle mold plate close to the cavity is provided with a third V-shaped groove and a fourth V-shaped groove, and the upper surface of the lower mold plate close to the cavity is respectively provided with a fifth V-shaped groove and a sixth V-shaped groove; wherein the second V-shaped groove and the fourth V-shaped groove cooperatively form a first edge stripping groove, the third V-shaped groove and the sixth V-shaped groove cooperatively form a second edge stripping groove, and the first V-shaped groove and the fifth V-shaped groove cooperatively form a third edge stripping groove.

2. A mold for hot vulcanization of a sealing strip according to claim 1, characterized in that The first edge stripping groove, the second edge stripping groove and the third edge stripping groove are respectively provided with a first glue storage groove, a second glue storage groove and a third glue storage groove away from the cavity, and each glue storage groove is used for storing excess glue.

3. A mold for hot vulcanization of a sealing strip according to claim 2, characterized in that The first glue storage groove is formed by a first glue storage groove provided on the upper mold plate, the second glue storage groove is formed by a second glue storage groove provided on the lower mold plate, and the third glue storage groove is formed by a third glue storage groove provided on the lower mold plate.

4. The mold of claim 1 wherein, The upper and lower stepped grooves are respectively provided above and below the end of the middle mold plate, the upper stepped groove is used as the mold stripping groove of the upper mold plate and the middle mold plate, and the lower stepped groove is used as the mold stripping groove of the lower mold plate and the middle mold plate.

5. The mold of claim 1 wherein, The first cavity surface is arranged on the upper die plate, the second cavity surface is arranged on the middle die plate, and the third cavity surface is arranged on the lower die plate. The first cavity surface is arranged on the upper die plate, the second cavity surface is arranged on the middle die plate, and the third cavity surface is arranged on the lower die plate.

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