CN217802759U - Small-size thin wall seal cover vulcanization mould utensil - Google Patents
Small-size thin wall seal cover vulcanization mould utensil Download PDFInfo
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- CN217802759U CN217802759U CN202221497905.0U CN202221497905U CN217802759U CN 217802759 U CN217802759 U CN 217802759U CN 202221497905 U CN202221497905 U CN 202221497905U CN 217802759 U CN217802759 U CN 217802759U
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Abstract
The utility model relates to a vulcanizing mould, in particular to a small thin-wall sealing sleeve vulcanizing mould; the device comprises an upper template, a middle template, a lower template, a core and an ejection device; the upper template comprises a platform I which is horizontally arranged, and a plurality of bosses which are vertical to the platform are arranged at the bottom of the platform I; the middle template comprises a platform II which is horizontally arranged, and a groove I is formed in the position, corresponding to the boss, of the platform II; the lower template comprises a horizontally arranged platform III, a groove II is formed in the position, corresponding to the groove, of the platform III, a through hole is formed in the bottom of the groove II, and a mold core is arranged in a cavity of the groove II; the sealing sleeve vulcanized by the die of the utility model has good size consistency, convenient use and high vulcanization qualification rate; the added automatic ejection and homing system after vulcanization solves the problem of mold damage in the vulcanization process; the structure is simple to operate, and the production cost is greatly reduced.
Description
Technical Field
The utility model relates to a vulcanization mould utensil, concretely relates to small-size thin wall seal cover vulcanization mould utensil.
Background
The sealing sleeve is a rubber part which plays a main sealing role in an exhaust valve component of the chemical oxygen respirator, the product of the sealing sleeve is a small thin-wall rubber sealing product (see figure 1, the size unit is mm), a traditional sealing sleeve flat vulcanization mould adopts an upper mould, a lower mould and a forming mould core mosaic structure (see figure 2), a sizing material is directly put into a forming part of a mould core of a sealing sleeve rubber moulding mould cavity in the vulcanization process, and the sealing sleeve is vulcanized and formed according to set vulcanization process parameters; after the vulcanization is finished, the embedded cores are taken out one by operating personnel, and the embedded cores are placed into corresponding positions of the lower die one by one after the seal sleeve product is taken down.
There are several problems with conventional die use:
1) The thickness of the forming part (shown in figure 2) of the working part of the embedded core is only 1mm, and due to the small thickness and the mould pressing type vulcanization method, the 1mm thickness plate at the forming part of the mould is easy to extrude and deform under the influence of extrusion force of rubber materials in the vulcanization process, so that the thickness size uniformity and deviation of the formed working surface of the sealing sleeve are large, the vulcanization qualified rate of a product is only about 20%, and the airtight detection qualified rate after the exhaust valve is assembled is difficult to ensure.
2) After the product is taken down, the embedded core is manually placed, the concentricity of the core and the lower template is difficult to ensure, the embedded core and the lower template are extruded frequently in the vulcanization process, and the damage rate of the mold is high;
3) The thickness dimension deviation of the sealing sleeve directly leads to the improvement of the defective rate of the air tightness detection of the assembled exhaust valve assembly, and the statistical air tightness qualification rate of the exhaust valve assembled by the sealing sleeve vulcanized by using the traditional die can only reach 20%.
Disclosure of Invention
The utility model discloses a solve the technical problem that the vulcanization qualification rate that small-size thin wall seal cover mould of tradition exists is low, the mould easily harms, the size is difficult to the assurance, provide a small-size thin wall seal cover vulcanization mould utensil. The design has mold core ejecting and automatic re-setting device after the mold opening, solves the problem of mold extrusion deformation in the vulcanization process, ensures the dimensional precision of products and the dimensional consistency of the products, and improves the vulcanization qualified rate of the products and the airtight detection qualified rate of exhaust valves.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts does: a small thin-wall sealing sleeve vulcanization mold comprises an upper template, a middle template, a lower template, a mold core and an ejection device;
the upper template comprises a platform I which is horizontally arranged, and a plurality of bosses which are vertical to the platform are arranged at the bottom of the platform I;
the middle template comprises a platform II which is horizontally arranged, a groove I is formed in the position, corresponding to the boss, of the platform II, the shape of the groove I is matched with that of the boss, and a glue outlet is formed in the bottom of the groove I;
the lower template comprises a horizontally arranged platform III, a groove II with a cross section similar to an I shape is formed in the position, corresponding to the groove, of the platform III, a through hole is formed in the bottom of the groove II, a mold core is arranged in the cavity of the groove II, the mold core comprises a body with a cross section similar to the I shape, the body of the mold core comprises a vertically arranged central column, the upper end and the lower end of the central column are respectively provided with a round platform, the central column of the mold core body extends towards the upper round platform to form a small section of cylindrical extension section, the top of the cylindrical extension section is provided with a glue inlet groove, and a forming mold cavity is formed by gaps among the upper round platform, the cylindrical extension section and the inner wall of the upper section of the groove II and used for forming a thin-wall seal sleeve; the lower part of the core central column is sleeved with a compression spring, and the compression spring is clamped in a cavity formed between the outer side of the core central column and the inner side wall of a section of cavity with a larger diameter at the lower part of the groove II and a lower end circular platform of the core;
the ejection device comprises a platform IV which is horizontally arranged, an ejector rod is arranged at a position, corresponding to the groove II, of the platform IV, the size of the ejector rod is matched with that of a through hole at the bottom of the groove II, and the ejector rod can extend into the through hole at the bottom of the groove II.
The utility model discloses the mould is used for ordinary curing press to carry out the product shaping, and the use of this mould and product forming process are:
1) Preheating a mould: preheating the mould to a specified vulcanization temperature;
2) And (3) vulcanizing a product: firstly, taking out the mold, opening the upper template, and putting a specified amount of rubber compound into a middle mold rubber material groove; then closing the die and placing the die in the effective working range of a vulcanization flat plate, preheating the rubber compound under the action of thermal force under the set vulcanization condition to be in a flowing state, injecting the rubber compound into a product molding die cavity of the lower die plate under the action of pressure, and then carrying out vulcanization molding;
3) Taking out the product: after vulcanization is finished according to set vulcanization parameters, the flat plate is opened, the mold is taken out, the upper, middle and lower templates are opened, the mold core is ejected out by using an ejection device, a product is taken out, and the mold core automatically resets under the action of a spring;
4) Repeating the steps 2) and 3) and continuing to vulcanize the product.
Compared with the prior art the utility model discloses following beneficial effect has:
1. the utility model designs a novel mould structure which can solve the practical production problem, improve the working efficiency and reduce the production cost through the improvement of the mould structure aiming at the problems that the mould is easy to be damaged, the thickness and the size of the product are difficult to be ensured, the vulcanization qualified rate of the product is low and the like in the vulcanization process of the small thin-wall sealing sleeve;
2. the sealing sleeve product vulcanized by the mould of the utility model has good size consistency, convenient use and high vulcanization qualification rate;
3. the utility model adds an automatic ejection and return system after vulcanization, which solves the problem of mold damage during vulcanization;
4. the utility model discloses mould structure easy operation, material utilization is high, greatly reduced manufacturing cost.
5. The new mold structure opens up a new design idea for the vulcanization mode of the small-sized thin-wall rubber part.
Drawings
Figure 1 is a diagram of the seal cartridge parts.
Fig. 2 is a schematic view of a conventional gland vulcanization mold cavity.
Fig. 3 is the utility model discloses seal cover vulcanization mould structure schematic diagram.
Figure 4 is a top view of the lower platen and mandrel.
FIG. 5 is an enlarged view of the point I in FIG. 4
The figures are labeled as follows:
1-upper template, 2-middle template, 3-lower template, 4-core, 5-ejection device, 6-compression spring, 7-ejector rod, 8-small thin-wall sealing sleeve, 9-residual glue groove and 10-glue inlet groove.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Examples
As shown in fig. 3, the small-sized thin-wall sealing sleeve vulcanizing mold is characterized by comprising an upper template 1, a middle template 2, a lower template 3, a mold core 4 and an ejection device 5;
the upper template 1 comprises a platform I which is horizontally arranged, and a plurality of bosses which are vertical to the platform are arranged at the bottom of the platform I;
the middle template 2 comprises a platform II which is horizontally arranged, a groove I is formed in the position, corresponding to the boss, of the platform II, the shape of the groove I is matched with that of the boss, and a glue outlet is formed in the bottom of the groove I;
the lower template 3 comprises a horizontally arranged platform III, a groove II with a cross section similar to an I shape is formed in the position, corresponding to the groove, of the platform III, a through hole is formed in the bottom of the groove II, a mold core 4 is arranged in a cavity of the groove II, the mold core 4 comprises a body with a cross section similar to the I shape, the body of the mold core 4 comprises a vertically arranged central column, the upper end and the lower end of the central column are respectively provided with a circular truncated cone, the central column of the body of the mold core 4 extends towards the upper circular truncated cone to form a small section of cylindrical extending section, the top of the cylindrical extending section is provided with a glue inlet groove 10, and gaps among the upper circular truncated cone, the cylindrical extending section and the inner wall of the upper section of the groove II form a molding mold cavity for molding a thin-wall seal sleeve; the lower part of the central column of the mold core 4 is sleeved with a compression spring 6, and the compression spring 6 is clamped in a cavity formed between the outer side of the central column of the mold core 4 and the inner side wall of a section of cavity with larger diameter at the lower part of the groove II and the lower end circular truncated cone of the mold core 4;
the ejection device 5 comprises a platform IV which is horizontally arranged, an ejector rod 7 is arranged at a position, corresponding to the groove II, of the platform IV, the size of the ejector rod 7 is matched with that of a through hole at the bottom of the groove II, and the ejector rod 7 can extend into the through hole at the bottom of the groove II.
Further, as shown in fig. 4, the platform i, the platform ii, the platform iii and the platform iv are cubes, the number of the bosses, the groove i, the groove ii, the mold core 4 and the ejector rods 7 is four, and the bosses, the groove i, the groove ii and the ejector rods 7 are cylindrical.
The glue inlet groove 11 formed in the top of the mold core 4 is a straight groove formed in the radial direction of the cylindrical extension section and penetrating through two ends of the diameter, and a circular groove corresponding to the glue outlet hole of the middle template 2 is formed in the center of the straight groove.
Further, the lower end round platform of the mold core 4 is connected with the center column through a bolt.
Further, as shown in fig. 5, a residual glue groove 9 is formed in the lower template 3 located on the outer circumferential side of the top of the mold core 4, the residual glue groove 9 is annular and is communicated with the molding mold cavity, and the residual glue groove 9 is arranged to facilitate discharging of redundant glue in the molding mold cavity.
Furthermore, the upper part of the groove I of the middle template 2 is also provided with a residual glue groove 9 communicated with the groove I along the circumferential outer side.
The rubber compound placed in the groove I of the middle template 2 in the vulcanization process is heated to be in a vulcanization state, and enters a forming die cavity of the lower template 3 by a boss of the upper template 1 through a rubber outlet and a rubber inlet groove 10 of the middle template 2 under the pressure transferred by the flat plate to start vulcanization; after the mold is opened, aligning the through hole of the lower template with an ejector rod 7 of an ejection device 5, flatly placing the through hole on the upper side of the ejection device 5, taking out a vulcanized part after the mold core is ejected, and timely cleaning a mold cavity; after the completion, the lower template is separated from the ejection device, and the mold core is automatically reset under the action of the compression spring 6.
The utility model discloses the mould is used for ordinary curing press to carry out the product shaping, and the use of this mould and product forming process are:
1) Preheating a mold: preheating the mould to a specified vulcanization temperature;
2) And (3) vulcanizing a product: firstly, taking out the mold, opening the upper template 1, and putting a specified amount of rubber compound into a middle mold rubber material groove; then the die is closed and put into the effective working range of the vulcanizing plate, the rubber compound is preheated by the action of heat under the set vulcanizing condition to be in a flowing state, and then the rubber compound is injected into a product molding die cavity of the lower template 3 under the action of pressure for vulcanization molding;
3) Taking out a product: after vulcanization is finished according to set vulcanization parameters, the flat plate is opened, the mold is taken out, the upper, middle and lower templates are opened, the mold core is ejected out by using an ejection device, a product is taken out, and the mold core automatically resets under the action of a compression spring 6;
4) Repeating the steps 2) and 3) and continuing to vulcanize the product.
The utility model discloses a seal cover vulcanization mould utensil improves to the problem that traditional mould use exists on the basis of the dull and stereotyped tradition moulding-die of seal cover rubber:
1) Aiming at the problem that the size deviation of a working surface of a product is large due to the fact that rubber materials are directly placed in a forming die cavity, the rubber filling mode of a rubber injection die is referred, the die is improved into a pressure injection type flat plate vulcanization die structure, so that rubber compound is heated into a flowing state firstly in the vulcanization process, and then enters the die cavity through a rubber inlet, the damage of the traditional rubber filling mode to a 1 mm-thickness plate with an embedded core is avoided, and the uniformity of the thickness of the working surface is guaranteed.
2) In order to solve the problem that the mold is damaged in the product taking process in the traditional mold vulcanization process, the mold core jacking and automatic discharging reset design is carried out after vulcanization, the uniformity and consistency of the product size after the thin-wall sealing sleeve mesh mold is used for a long time are ensured, the loss in the mold production process is reduced, and the product vulcanization qualified rate is improved.
Claims (6)
1. A small-sized thin-wall sealing sleeve vulcanizing mold is characterized by comprising an upper template (1), a middle template (2), a lower template (3), a mold core (4) and an ejection device (5);
the upper template (1) comprises a platform I which is horizontally arranged, and a plurality of bosses which are vertical to the platform are arranged at the bottom of the platform I;
the middle template (2) comprises a platform II which is horizontally arranged, a groove I is formed in the position, corresponding to the boss, of the platform II, the shape of the groove I is matched with that of the boss, and a glue outlet is formed in the bottom of the groove I;
the lower template (3) comprises a horizontally arranged platform III, a groove II with a cross section in an I shape is formed in the position, corresponding to the groove, of the platform III, a through hole is formed in the bottom of the groove II, a mold core (4) is arranged in the cavity of the groove II, the mold core (4) comprises a body with a cross section in an I shape, the body of the mold core (4) comprises a vertically arranged central column, the upper end and the lower end of the central column are respectively provided with a circular truncated cone, the central column of the body of the mold core (4) extends towards the upper circular truncated cone to form a small section of cylindrical extending section, a glue inlet groove (10) is formed in the top of the cylindrical extending section, and a forming mold cavity is formed by gaps among the upper circular truncated cone, the cylindrical extending section and the inner wall of the upper section of the groove II and is used for forming a thin-wall sealing sleeve; the lower part of the central column of the mold core (4) is sleeved with a compression spring (6), and the compression spring (6) is clamped in a cavity formed between the outer side of the central column of the mold core (4), the inner side wall of a section of cavity with a larger diameter at the lower part of the groove II and a lower end circular truncated cone of the mold core (4);
the ejection device (5) comprises a platform IV which is horizontally arranged, an ejector rod (7) is arranged at the position, corresponding to the groove II, of the platform IV, the size of the ejector rod (7) is matched with that of a bottom through hole of the groove II, and the ejector rod (7) can stretch into the bottom through hole of the groove II.
2. The small-sized thin-wall sealing sleeve vulcanizing mold as claimed in claim 1, wherein the platform I, the platform II, the platform III and the platform IV are cubes, the number of the bosses, the number of the grooves I, the number of the grooves II, the number of the cores (4) and the number of the ejector rods (7) are four, and the bosses, the grooves I, the grooves II and the ejector rods (7) are cylindrical.
3. The small-sized thin-wall sealing sleeve vulcanizing mold as claimed in claim 1, wherein the glue inlet groove (10) formed at the top of the mold core (4) is a through straight groove formed along the radial direction of the cylindrical extension section, and the center of the straight groove is provided with a circular groove corresponding to the glue outlet hole of the middle mold plate (2).
4. A small-sized thin-walled sealing sleeve vulcanization mold according to claim 1, characterized in that the lower round table of the core (4) is connected with the center post by a bolt.
5. The small-sized thin-wall sealing sleeve vulcanizing mold as claimed in claim 1, wherein a residual glue groove (9) is formed in the lower mold plate (3) located on the circumferential outer side of the top of the mold core (4), and the residual glue groove (9) is annular and communicated with the molding mold cavity.
6. The small-sized thin-wall sealing sleeve vulcanization mold as claimed in claim 1, characterized in that the upper portion of the groove I of the middle mold plate (2) is also provided with a residual rubber groove (9) communicated with the groove I along the circumferential outer side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221497905.0U CN217802759U (en) | 2022-06-16 | 2022-06-16 | Small-size thin wall seal cover vulcanization mould utensil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221497905.0U CN217802759U (en) | 2022-06-16 | 2022-06-16 | Small-size thin wall seal cover vulcanization mould utensil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217802759U true CN217802759U (en) | 2022-11-15 |
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ID=83992206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221497905.0U Active CN217802759U (en) | 2022-06-16 | 2022-06-16 | Small-size thin wall seal cover vulcanization mould utensil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217802759U (en) |
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2022
- 2022-06-16 CN CN202221497905.0U patent/CN217802759U/en active Active
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