An inflatable molding device for processing stern shaft pneumatic tire seal rings

Abstract

This utility model discloses an inflatable molding device for processing stern shaft pneumatic tire seal rings, applied to the inflatable molding of preforms. It includes a molding mold and an inflatable assembly. The molding mold includes a limiting splicing part, and the preform is disposed within the inner cavity of the limiting splicing part. A fixing part is provided at the connection of the limiting splicing part. The inflatable assembly includes a connecting part, which is inserted into the side of the limiting splicing part. An air supply part is provided at the air inlet end of the connecting part, and an extrusion part is provided at the connection between the connecting part and the limiting splicing part. In this utility model, a preform is placed at the limiting splicing part. The preform inflates the connecting part through the air supply part, and the connecting part delivers gas to the inner cavity of the preform. The preform expands and molds under pressure within the inner cavity of the limiting splicing part. Compared to traditional core-pulling molds for fixing and molding the preform, this design achieves molding through direct inflation, avoiding the time-consuming mechanical actions of core mold pulling and resetting in core-pulling molds.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic tire seal ring processing equipment, and in particular to an inflation molding device for processing stern shaft pneumatic tire seal rings. Background Technology

[0002] In the field of marine power systems, the stern shaft pneumatic seal ring is a core component that ensures the dynamic sealing of the stern shaft. Its molding quality directly affects the waterproof performance and equipment reliability of the ship during navigation. The traditional stern shaft seal ring processing technology generally uses core-pulling molds to shape the rubber blank.

[0003] However, with this molding method, the core-pulling mold needs to be driven by a hydraulic or pneumatic device to complete the "insertion-pressure holding-extraction" cycle. The single molding cycle is time-consuming, especially on continuous production lines, where the mechanical actions of core mold pulling and resetting prolong the molding time of the air tire seal ring.

[0004] Therefore, how to achieve rapid molding of the stern shaft seal ring and avoid the time-consuming mechanical actions of core mold pulling and resetting in the core pulling mold has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] The purpose of this invention is to provide an inflatable forming device for processing stern shaft pneumatic tire seal rings, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an inflatable molding device for processing stern shaft pneumatic tire seal rings, applied to the inflatable molding of pre-formed rubber blanks, comprising:

[0007] A shaping mold is used for limiting and fixing a preformed plastic blank. The shaping mold includes a limiting splicing part, the preformed plastic blank is disposed in the inner cavity of the limiting splicing part, and a fixing part for fixing the limiting splicing part is provided at the connection of the limiting splicing part.

[0008] An inflatable assembly is used for inflating and molding a preform. The inflatable assembly includes a connecting part that is inserted into the side of a limiting splice part. The air inlet end of the connecting part is provided with an air supply part for air intake. The connection between the connecting part and the limiting splice part is provided with a compression part for limiting the connecting part.

[0009] Preferably, the limiting splicing part includes:

[0010] The upper template, wherein the preformed plastic blank is fitted onto the bottom outer side of the upper template;

[0011] The lower template is interlocked with the bottom of the upper template.

[0012] Preferably, the fixing part includes fixing bolts, the bottom ends of which are sequentially inserted and connected to the top of the upper template and the top of the lower template, and the fixing bolts are used for closing and fixing the upper template and the lower template.

[0013] Preferably, the connecting part includes an air inlet, which is disposed on the side of the preformed plastic blank, and the end of the air inlet is inserted and connected to the splice of the upper template and the lower template.

[0014] Preferably, the air supply unit includes an air compressor, the output end of which is fixedly connected to the end of the air inlet, and the air compressor is used for air intake of the air inlet.

[0015] Preferably, the extrusion section includes:

[0016] A grooved nozzle is formed at the top of the lower template and is used for the insertion of an inflation nozzle;

[0017] A limiting protrusion is provided at the bottom of the upper template, and the bottom of the limiting protrusion is inserted and connected to the inner cavity of the groove mouth;

[0018] An isolation element is disposed at the bottom of a limiting protrusion, and the isolation element is used for flexible compression isolation of the inflation nozzle.

[0019] Preferably, the isolation element includes:

[0020] A flexible arc plate is disposed at the bottom of the limiting protrusion, and the flexible arc plate is used to isolate the limiting protrusion from the inflation nozzle;

[0021] A fixing plate, the side of which is inserted and connected to the side of the flexible arc plate;

[0022] An elastic insert is provided on the top of the fixed plate, and the top of the elastic insert is inserted into the bottom of the limiting protrusion;

[0023] A locking groove is provided at the bottom of the limiting protrusion, and the locking groove is used for the insertion of the elastic insert.

[0024] Preferably, the inner wall of the locking groove is provided with a pressing groove, which is used for pressing and unlocking the elastic insert.

[0025] The technical effects and advantages of this utility model are as follows:

[0026] This invention involves placing a preformed plastic blank at the limiting splicing part in a shaping mold. The preformed plastic blank is inflated by the air supply part in the air inflation component, which inflates the connecting part that is inserted on the side of the limiting splicing part. The connecting part delivers the gas to the inner cavity of the preformed plastic blank. The preformed plastic blank expands under pressure in the inner cavity of the limiting splicing part and is formed. The extrusion part limits and buffers the connecting part. Compared with the traditional core-pulling mold that fixes the plastic blank, this design forms the plastic blank by directly inflating it, avoiding the time-consuming mechanical action of core mold pulling and resetting in the core-pulling mold. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0028] Figure 2 This is an exploded structural diagram of the entire utility model.

[0029] Figure 3 This is a schematic diagram of the overall structure of this utility model.

[0030] Figure 4 This is a cross-sectional view of the isolation component of this utility model.

[0031] In the diagram: 1. Shaping mold; 101. Upper template; 1011. Limiting protrusion; 102. Lower template; 1021. Groove nozzle; 103. Fixing bolt; 2. Preformed plastic blank; 201. Inflation nozzle; 3. Air compressor; 4. Isolation component; 401. Flexible arc plate; 402. Fixing plate; 403. Elastic insert; 404. Locking groove; 405. Pressing groove. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1: This utility model provides the following... Figure 1-4 The device shown is an inflatable molding device for processing stern shaft pneumatic tire seal rings, which is used for inflating and shaping preformed rubber blanks 2, and includes: a shaping mold 1 and an inflatable component;

[0034] It should be noted that the shaping mold 1 is used for limiting and fixing the preform 2, and the inflation component is used for the inflation molding of the preform 2.

[0035] Specifically, the shaping mold 1 includes a limiting splicing part, the preformed plastic blank 2 is disposed in the inner cavity of the limiting splicing part, and the connection of the limiting splicing part is provided with a fixing part for fixing the limiting splicing part;

[0036] It should be noted that the inflatable component includes a connecting part, which is inserted into the side of the limiting splicing part. The air inlet end of the connecting part is provided with an air supply part for air intake, and the connection between the connecting part and the limiting splicing part is provided with a squeezing part for limiting the connecting part.

[0037] Specifically, the limiting splicing part includes: upper template 101 and lower template 102;

[0038] It should be noted that the preformed plastic blank 2 is fitted on the bottom outside of the upper template 101, and the top of the lower template 102 is interlocked with the bottom of the upper template 101.

[0039] Specifically, grooves are provided at the connection between the lower template 102 and the upper template 101 to accommodate the expansion of the preformed plastic blank 2;

[0040] Furthermore, the fixing part includes fixing bolts 103, the bottom end of which is sequentially inserted and connected to the top of the upper template 101 and the top of the lower template 102. The fixing bolts 103 are used to close and fix the upper template 101 and the lower template 102.

[0041] The top of the lower template 102 is provided with a threaded groove, and the fixing bolt 103 is tightened into the threaded groove to fix the upper template 101 and the lower template 102.

[0042] It should be noted that the connecting part includes an air inlet 201, which is disposed on the side of the preformed plastic blank 2, and the end of the air inlet 201 is inserted and connected to the splice of the upper template 101 and the lower template 102.

[0043] Specifically, the inflation nozzle 201 is connected to the inner cavity of the preformed rubber blank 2. The connection between the inflation nozzle 201 and the preformed rubber blank 2 is bonded and fixed with high temperature resistant inorganic glue. The air supply part includes an air compressor 3. The output end of the air compressor 3 is fixedly connected to the end of the inflation nozzle 201. The air compressor 3 is used for the air intake of the inflation nozzle 201.

[0044] It should be noted that the outer side of the air inlet 201 is threaded, and the output end of the air compressor 3 is threadedly fixed to the air inlet 201.

[0045] Specifically, the extrusion part includes: a grooved nozzle 1021, a limiting protrusion 1011, and a separator 4;

[0046] It should be noted that the groove 1021 is formed on the top of the lower template 102 and is used for the insertion of the inflation nozzle 201. The limiting protrusion 1011 is set at the bottom of the upper template 101 and the bottom of the limiting protrusion 1011 is inserted and connected to the inner cavity of the groove 1021. The isolation member 4 is set at the bottom of the limiting protrusion 1011 and the bottom of the limiting protrusion 1011 is inserted and connected to the inner cavity of the groove 1021. The limiting protrusion 1011 and the upper template 101 are integrally cast.

[0047] Example 2: This utility model introduces the isolation component 4, which is applied to the inflatable forming device for processing the stern shaft pneumatic tire seal ring in Example 1.

[0048] It should be noted that the isolation component 4 is used for flexible compression isolation of the air nozzle 201. The isolation component 4 includes: a flexible arc plate 401, a fixing plate 402, an elastic insert 403 and a locking groove 404.

[0049] Specifically, a flexible arc plate 401 is disposed at the bottom of the limiting protrusion 1011. The flexible arc plate 401 is used to isolate the limiting protrusion 1011 from the inflation nozzle 201. The side of the fixing plate 402 is inserted and connected to the side of the flexible arc plate 401. The elastic insert 403 is disposed at the top of the fixing plate 402. The top of the elastic insert 403 is inserted and connected to the bottom of the limiting protrusion 1011. The locking groove 404 is opened at the bottom of the limiting protrusion 1011.

[0050] It should be noted that the locking groove 404 is used for the insertion of the elastic insert 403, the flexible arc plate 401 is made of silicone, the insertion point of the fixing plate 402 and the flexible arc plate 401 is fixed with glue, the elastic insert 403 is fixed with the fixing plate 402 by welding, the side of the elastic insert 403 is set as a wedge-shaped protrusion, and the side of the elastic insert 403 is engaged and fixed with the inner wall of the locking groove 404.

[0051] Specifically, the inner wall of the locking groove 404 is provided with a pressing groove 405, which is used to press and unlock the elastic insert 403. By pressing the wedge-shaped protrusion on the side of the elastic insert 403 through the pressing groove 405, the elastic insert 403 is unlocked and disengaged from the locking groove 404, so as to disassemble and maintain the flexible arc plate 401 after it is damaged. The flexible arc plate 401 flexibly compresses the air nozzle 201 to prevent the air nozzle 201 from shaking.

[0052] In actual use, a preformed plastic blank 2 is placed at the limiting splicing part in the shaping mold 1. The preformed plastic blank 2 is inflated by the air supply part in the air inflation component to the air inflator 201 inserted on the side of the limiting splicing part. The air inflator 201 delivers gas to the inner cavity of the preformed plastic blank 2. First, low pressure is inflated, the limiting splicing part closes, and finally high pressure is inflated. The preformed plastic blank 2 is compressed and expanded in the inner cavity of the limiting splicing part and fixed in shape. The extrusion part limits and buffers the air inflator 201. Compared with the traditional core-pulling mold for fixing the plastic blank, this design directly inflates the preformed plastic blank 2 for shaping, avoiding the time-consuming mechanical action of core mold pulling and resetting in the core-pulling mold.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pneumatic molding device for processing stern shaft pneumatic tire seal rings, applied to the pneumatic molding of preformed rubber blanks (2), characterized in that, include: A shaping mold (1) is used for limiting and fixing a preform (2). The shaping mold (1) includes a limiting splicing part. The preform (2) is disposed in the inner cavity of the limiting splicing part. A fixing part for fixing the limiting splicing part is provided at the connection of the limiting splicing part. An inflatable assembly is used for inflating and molding a preform (2). The inflatable assembly includes a connecting part, which is inserted into the side of the limiting splicing part. The air inlet end of the connecting part is provided with an air supply part for air intake, and the connection between the connecting part and the limiting splicing part is provided with an extrusion part for limiting the connecting part.

2. The inflatable forming device for processing stern shaft pneumatic tire seal rings according to claim 1, characterized in that, The limiting splicing part includes: Upper template (101), the preformed plastic blank (2) is sleeved on the bottom outer side of the upper template (101); The lower template (102) is interlocked with the bottom of the upper template (101).

3. The inflatable forming device for processing stern shaft pneumatic tire seal rings according to claim 2, characterized in that, The fixing part includes a fixing bolt (103), the bottom end of which is sequentially inserted and connected to the top of the upper template (101) and the top of the lower template (102). The fixing bolt (103) is used to fix the upper template (101) and the lower template (102) together.

4. The inflatable forming device for processing stern shaft pneumatic tire seals according to claim 2, characterized in that, The connecting part includes an air inlet (201), which is disposed on the side of the preform (2), and the end of the air inlet (201) is inserted and connected to the splice of the upper template (101) and the lower template (102).

5. The inflatable forming device for processing stern shaft pneumatic tire seal rings according to claim 4, characterized in that, The air delivery unit includes an air compressor (3), the output end of which is fixedly connected to the end of the air inlet (201), and the air compressor (3) is used for air intake of the air inlet (201).

6. The inflatable forming device for processing stern shaft pneumatic tire seal rings according to claim 5, characterized in that, The extrusion section includes: A grooved nozzle (1021) is provided on the top of the lower template (102), and the grooved nozzle (1021) is used for the insertion of the inflation nozzle (201); A limiting protrusion (1011) is provided at the bottom of the upper template (101), and the bottom of the limiting protrusion (1011) is inserted and connected to the inner cavity of the groove mouth (1021). The isolation element (4) is disposed at the bottom of the limiting protrusion (1011) and is used for flexible compression isolation of the air nozzle (201).

7. The inflatable forming device for processing stern shaft pneumatic tire seal rings according to claim 6, characterized in that, The isolation element (4) includes: A flexible arc plate (401) is disposed at the bottom of the limiting protrusion (1011), and the flexible arc plate (401) is used to isolate the limiting protrusion (1011) from the inflation nozzle (201). A fixing plate (402) is inserted and connected to the side of the flexible arc plate (401) on its side. An elastic insert (403) is disposed on the top of the fixing plate (402), and the top of the elastic insert (403) is inserted and connected to the bottom of the limiting protrusion (1011); A locking groove (404) is provided at the bottom of the limiting protrusion (1011) and is used for the insertion of the elastic insert (403).

8. The inflatable forming device for processing stern shaft pneumatic tire seal rings according to claim 7, characterized in that, The inner wall of the locking groove (404) is provided with a pressing groove (405), which is used for pressing and unlocking the elastic insert (403).

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