Outer circle semi-rubber-coated oil seal mold structure

Abstract

An outer circle half rubber-coated oil seal mold structure comprises a first upper mold, a middle mold and a first lower mold, one side of the first lower mold is fixedly connected with a second lower mold, the inner side of the middle mold is movably connected with a thermal expansion framework, and a rubber ring placing position is movably connected between the upper portion of the second lower mold and the second upper mold. According to the outer-circle half-rubber-coating oil seal mold structure, after an improved mold and a middle mold fall to a lower mold composed of a first lower mold and a second lower mold, a heat expansion framework is firstly released, the heat expansion framework will expand when the mold is in a heat state, and the heat expansion framework is tightly attached to the mold through heat expansion of the heat expansion framework; and after the upper mold consisting of the first upper mold and the second upper mold falls down, the sizing material sealing body flows again, and the outer diameter of the thermal expansion framework is sealed in advance, so that the outer circle of a product does not have excessive glue, the appearance quality of the product is very good, the procedure of manually scraping burrs is reduced, manpower resources are saved, and meanwhile, the product quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to half -encapsulated oil seal mould technical field especially relates to a half -encapsulated oil seal mould structure. BACKGROUND

[0002] Half -encapsulated oil seal mould has been widely used in oil seal rubber products, but the mould is mostly two -open structure, and the overall appearance quality of the product is not good, and the product itself quality cannot form favorable control by manual trimming.

[0003] For example, the half -encapsulated oil seal mould of CN105171977B, half -encapsulated oil seal mould is mainly upper die and lower die, cancels the middle die and push plate in traditional half -encapsulated oil seal mould, so that the half -encapsulated oil seal mould of the application becomes the mould of two -plate mould structure, greatly simplifies the mould structure.

[0004] However, the half -encapsulated oil seal mould still has some problems when using, for example, the prior art is three -open mould, skeleton is installed vertically, and the product appearance is improved, but the outer circle seal glue is not completely solved from the structure, causing the outer circle to always have overflow glue, and manual scraping of the glue burr and burr is needed, causing product appearance defects, increasing the cost of labor and glue, and reducing the competitiveness of the product in the market.

[0005] The skeleton of the existing three -open mould is installed vertically, and the cut glue strip is placed manually, and the glue flows in the mould cavity during the process of mould closing and pressurizing vulcanization, and the glue flows to the skeleton outside, causing overflow glue, and the overflow glue forms burr and is bonded on the skeleton, which needs manual scraping of the excess burr, and the process of scraping the burr can scratch the product and cause scratches everywhere, affecting the product quality and causing a certain amount of scrap rate. SUMMARY

[0006] The utility model solves the prior art problems, provides a half -encapsulated oil seal mould structure, can improve the glue placing efficiency, saves time, solves the product outer circle overflow glue problem, prevents manual scraping of the product outer circle burr, improves product quality, improves product market competitiveness, improves production rate, significantly improves product yield, and prevents the generation of waste products in the production process.

[0007] The utility model adopts the technical scheme of the following technical solutions to solve the technical problems:

[0008] Design a half -encapsulated oil seal mould structure, including first upper mould, middle die and first lower mould, the side of first lower mould is fixedly connected with second lower mould, the inside of middle die is movably connected with thermal expansion skeleton, and the upper side of second lower mould is movably connected with glue placing ring position between second upper mould.

[0009] Further improvement, one side of the first upper die is fixedly connected with a second upper die, and the middle die is fixedly connected between the first lower die and the first upper die.

[0010] Further improvement, the top end of the first lower die is movably connected to the lower side of the thermal expansion framework, and the top end of the second lower die is movably connected to the other side of the lower side of the thermal expansion framework.

[0011] Further improvement, one side of the second lower die is threadedly connected with a second bolt, and the second bolt is threadedly connected with the die fixing seat.

[0012] Further improvement, the inner side of the thermal expansion framework is fixedly connected with a rubber seal body, and the upper side of the rubber seal body is provided with a rubber sealing inclined surface.

[0013] Further improvement, one side of the first upper die is threadedly connected with a first bolt, and the end of the first bolt is threadedly connected with the inner side of the second upper die.

[0014] The utility model has the beneficial effect that: the utility model discloses an improved die, after the middle die falls to the lower die formed by the first lower die and the second lower die, the thermal expansion framework is placed first, the thermal expansion framework will product thermal expansion under the die heat state, the thermal expansion framework is pasted to the die through self thermal expansion, then the upper die formed by the first upper die and the second upper die falls, the rubber seal body flows again, the product outer circle will not have overflow glue because of the advance sealing of the thermal expansion framework outer diameter, and the product appearance quality is very good, the manual burr scraping process is reduced, human resources are saved, and the product quality is improved.

[0015] And the improved die, the thermal expansion framework is placed first, and then the preformed rubber ring is placed, originally, the rubber strip is placed, and the operator needs to pay attention to the placement position and accuracy, and the preformed rubber ring is directly sleeved on the die column and is simple and fast.

[0016] The thermal expansion framework has been pasted to the die in advance to ensure the sealing property of the rubber sealing position during the placement of the rubber ring. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the internal section view schematic diagram of the utility model;

[0018] Figure 2 It is the A part enlarged schematic diagram of Figure 1

[0019] Figure 3 It is the improved die rubber ring placement position three-dimensional schematic diagram.

[0020] ​Explanation of reference signs: in the drawing: 1, first upper mold, 2, second upper mold, 3, middle mold, 4, first lower mold, 5, second lower mold, 6, glue circle position, 7, thermal expansion skeleton, 8, first bolt, 9, glue sealing slope, 10, glue sealing body, 11, second bolt. DETAILED DESCRIPTION

[0021] The utility model will be further described below in combination with the drawings:

[0022] Refer to the drawings Figures 1-3 In this embodiment, an outer circle half rubberizing oil seal mold structure, including first upper mold 1, middle mold 3 and first lower mold 4, one side of first lower mold 4 is fixedly connected with second lower mold 5, first upper mold 1 and second upper mold 2 are formed into upper mold structure by first bolt 8, the inner side of middle mold 3 is movably connected with thermal expansion skeleton 7, first lower mold 4 and second lower mold 5 form lower mold, and the upper side of second lower mold 5 is movably connected with glue circle position 6 between second upper mold 2, glue circle position 6 can directly wrap the annular glue on the lower mold, one side of first upper mold 1 is fixedly connected with second upper mold 2, middle mold 3 is fixedly connected between first lower mold 4 and first upper mold 1, and middle mold 3 is used to cooperate with the extrusion of upper mold to provide the shaping effect of glue;

[0023] After the improved mold, middle mold 3 falls to the lower mold formed by first lower mold 4 and second lower mold 5, first thermal expansion skeleton 7 is placed, thermal expansion skeleton 7 will product thermal expansion under the mold heat state, thermal expansion skeleton 7 is attached to the mold by the thermal expansion of itself, then the upper mold formed by first upper mold 1 and second upper mold 2 falls, and glue sealing body 10 flows again, the outer diameter of thermal expansion skeleton 7 is sealed in advance, so that the product outer circle will not produce glue overflow, the product appearance quality is very good, the manual burr scraping process is reduced, the human resources are saved, and the product quality is improved;

[0024] And the improved mold, first thermal expansion skeleton 7 is placed, and the preformed glue circle is placed, the original is to place the glue strip, and the operator needs to pay attention to the placement position and accuracy, and the preformed glue circle is directly wrapped on the mold column, which is simple and fast;

[0025] In the process of placing the glue circle, thermal expansion skeleton 7 has been expanded by heat and attached to the mold, which ensures the sealing property of the glue sealing position in advance.

[0026] The top end of first lower mold 4 is movably connected with the lower side of thermal expansion skeleton 7, and the top end of second lower mold 5 is movably connected with the other side of the lower side of thermal expansion skeleton 7.

[0027] The second lower mold 5 is screw-connected with a second bolt 11 on one side, the second bolt 11 is screw-connected with a mold fixing base, the inner side of the heat-expanding framework 7 is fixedly connected with a rubber seal body 10, the upper side of the rubber seal body 10 is provided with a rubber sealing slope 9, the first upper mold 1 is screw-connected with a first bolt 8 on one side, and the end of the first bolt 8 is screw-connected with the inner side of the second upper mold 2.

[0028] Working principle:

[0029] The outer circle semi-encapsulated oil seal mold structure has been widely applied in oil seal rubber products for a long time. After the improved mold, the rubber coating efficiency is improved, the sealing performance of the framework and the mold is improved, so that the appearance of the product after vulcanization is clean and beautiful, the manual deburring intervention is reduced, the production capacity is improved, and the workload of the operator is reduced.

[0030] After the improved mold, the middle mold 3 falls to the lower mold composed of the first lower mold 4 and the second lower mold 5, the heat-expanding framework 7 is placed first, the heat-expanding framework 7 will be heat-expanded under the heat state of the mold, the heat-expanding framework 7 is tightly attached to the mold through the heat expansion, then the upper mold composed of the first upper mold 1 and the second upper mold 2 falls, the rubber seal body 10 flows again, the outer diameter of the heat-expanding framework 7 is sealed in advance, so that the product outer circle will not produce overflow, the product appearance quality is very good, the manual deburring process is reduced, the human resources are saved, and the product quality is improved.

[0031] Although the utility model has been illustrated and described by referring to the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details can be made within the scope of the claims.

Claims

1. A mold structure for an outer circular half-boot seal, comprising a first upper mold (1), a middle mold (3) and a first lower mold (4), characterized in that: One side of the first lower mold (4) is fixedly connected with a second lower mold (5), the inner side of the middle mold (3) is movably connected with a thermal expansion framework (7), and the second lower mold (5) is movably connected with a second upper mold (2) between the upper side of the second lower mold (5) and the second upper mold (2).

2. The extruded o-ring mold structure of claim 1, wherein: One side of the first upper mold (1) is fixedly connected with a second upper mold (2), and the middle mold (3) is fixedly connected between the first lower mold (4) and the first upper mold (1).

3. The extruded oil seal mold structure of claim 1 wherein: The top end of the first lower mold (4) is movably connected with the lower side of the thermal expansion framework (7), and the top end of the second lower mold (5) is movably connected with the other side of the lower side of the thermal expansion framework (7).

4. The extruded oil seal mold structure of claim 1 wherein: One side of the second lower mold (5) is threadedly connected with a second bolt (11), and the second bolt (11) is threadedly connected with the mold fixed seat.

5. The extruded oil seal mold structure of claim 1 wherein: The inner side of the thermal expansion framework (7) is fixedly connected with a glue sealing body (10), and the upper side of the glue sealing body (10) is provided with a glue sealing slope (9).

6. The extruded oil seal mold structure of claim 1 wherein: One side of the first upper mold (1) is threadedly connected with a first bolt (8), and the end of the first bolt (8) is threadedly connected with the inner side of the second upper mold (2).

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