CN115742190A - Cladding mould of insulator composite bed - Google Patents
Cladding mould of insulator composite bed Download PDFInfo
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- CN115742190A CN115742190A CN202310006651.0A CN202310006651A CN115742190A CN 115742190 A CN115742190 A CN 115742190A CN 202310006651 A CN202310006651 A CN 202310006651A CN 115742190 A CN115742190 A CN 115742190A
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Abstract
The invention belongs to the technical field of special equipment for manufacturing insulators, and particularly relates to a coating die for an insulator composite layer, which comprises an upper die and a lower die and is characterized in that: the lower die comprises an inner die and an outer die sleeved on the inner die, the outer die, the inner die and the upper die jointly enclose a coating cavity, the outer die comprises a first outer die and a second outer die which are symmetrically arranged, a glue injection hole is formed in the outer die, and the glue injection hole is communicated with the lower part of the coating cavity; a steel cap positioning cavity is arranged in the upper die, the steel cap positioning cavity is provided with a bayonet, the bayonet is positioned on the bottom wall of the upper die, the top wall of the inner die is provided with an insertion hole, and the steel cap positioning cavity and the insertion hole are coaxially arranged; a steel foot fixing mould is inserted in the jack and comprises a left module and a right module which are detachably fixed together, and the left module and the right module jointly enclose a steel foot fixing cavity; the bottom of the upper die is provided with an upper die cavity, and the outer die can be inserted into the upper die cavity. The invention can effectively avoid the horizontal displacement of the insulator in the glue injection process and reduce the ceramic damage rate of the insulator.
Description
Technical Field
The invention belongs to the technical field of special equipment for manufacturing insulators, and particularly relates to a coating die for an insulator composite layer.
Background
The insulator is a special insulating control, and is usually installed between conductors with different potentials or between a conductor and a grounding component, so as to play a role in electrical insulation and mechanical fixation. Insulators are generally classified into disc-shaped suspension insulators and post-type insulators according to the manner of installation, and the disc-shaped suspension insulators are mostly used. The disc-shaped suspension insulator generally adopts a porcelain insulator, dust is easily deposited on the porcelain insulator, and the deposited dust easily causes flashover in damp environments such as rainwater and dew, so that the insulating property of the insulator is influenced.
To this end, the chinese patent application 201910383341.4 discloses a composite disc insulator with a new structure and a method for manufacturing the same, wherein a silicone rubber shed is formed on a working portion of an insulating core at one step, and the advantages of high insulating strength, hydrophobicity and hydrophobic migration of silicone rubber are utilized to improve the anti-fouling capability of the insulator, but the silicone rubber shed is easily deformed under the action of external force, and when the insulator has more than two sheds, even one shed touches an adjacent shed, the expectation of theoretically increasing the creepage distance cannot be reached, and the insulator still stays on the ceramic shed.
Chinese utility model patent 202022192934.3 discloses a two skirt porcelain composite insulator of disk, and it is last sheath and lower sheath that the cladding was made with the fluorine silicone rubber respectively on last full skirt and the full skirt down, goes up the sheath and is provided with the bonding sealing layer with steel cap overlap joint mouth department, and the terminal surface overlap joint mouth department is provided with down the bonding sealing layer under lower sheath and the porcelain body, goes up the sheath and links to each other with middle bonding sealing layer with lower sheath overlap joint mouth department between last full skirt and the full skirt. Although the insulator realizes the comprehensive coating of the upper umbrella skirt and the lower umbrella skirt, the integrity is not high, the bonding sealing part is easy to lose efficacy under outdoor natural conditions, the upper sheath and the lower sheath fall off, and the protection time is short.
Therefore, the applicant thinks that the covering of the silicon rubber protective layer is realized by using a die for forming the silicon rubber umbrella skirt, but the produced insulator has high porcelain damage rate, so that the insulator cannot be applied to actual production.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a coating die for an insulator composite layer, which can form a coating framework with tight outside and loose inside, ensure the coating quality of the composite layer, allow the insulator to have a certain moving space in the coating process and reduce the broken porcelain rate of the insulator.
The technical scheme adopted by the invention for solving the technical problems is as follows: the design is a cladding mould of insulator composite bed, including last mould and lower mould, its characterized in that: the lower die comprises an inner die and an outer die sleeved on the inner die, a coating cavity is defined between the outer die and the inner die, or the outer die, the inner die and the upper die define the coating cavity together, the outer die comprises a first outer die and a second outer die which are symmetrically arranged, a glue injection hole is formed in the outer die and communicated with the lower part of the coating cavity, the glue injection hole is connected with a flow regulating mechanism, a pressure sensor is arranged in the coating cavity, and the lower die further comprises a controller which controls the opening of the flow regulating mechanism according to a signal of the pressure sensor;
a steel cap positioning cavity is arranged in the upper die, the steel cap positioning cavity is provided with a bayonet, the bayonet is positioned on the bottom wall of the upper die, the top wall of the inner die is provided with an insertion hole, and the steel cap positioning cavity and the insertion hole are coaxially arranged; a steel foot fixing mould is inserted in the jack and comprises a left module and a right module which are detachably mounted together, and the left module and the right module jointly enclose a steel foot fixing cavity; the bottom of the upper die is provided with an upper die cavity, and the outer die can be inserted into the upper die cavity.
Furthermore, a first through hole communicated with the steel cap positioning cavity is formed in the upper die.
Furthermore, a vent groove is formed in the side wall of the steel cap positioning cavity, the lower end of the vent groove is communicated with the coating cavity, and the upper end of the vent groove is communicated with the first through hole.
Furthermore, the first through hole is communicated with the top wall of the upper die, and a first ejection mechanism which faces downwards vertically penetrates through the first through hole.
Furthermore, a second through hole communicated with the jack is formed in the inner die.
Furthermore, the bottom of the steel foot fixing mold is provided with an exhaust hole, the upper end of the exhaust hole is communicated with the steel foot fixing cavity, and the lower end of the exhaust hole is communicated with the second through hole.
Furthermore, a second through hole is communicated with the bottom wall of the inner mold, and a second ejection mechanism which is vertically upward penetrates through the second through hole.
Furthermore, the inner mold is fixed on the movable platform, and the first outer mold and the second outer mold are respectively connected with the movable platform in a sliding mode.
Furthermore, an outer mold frame is arranged on the movable platform, the first outer mold and the second outer mold are respectively connected to the inner wall of the outer mold frame through linear guide rails, and limiting mechanisms are arranged on the linear guide rails.
Furthermore, the mobile platform is connected with a lifting device.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the outer mold is formed to cover the inner mold, and the upper mold is used for fixing the outer mold, and the fixing structure is sleeved layer by layer, so that the integrity of the mold is improved, the relative displacement of the mold in the glue injection coating process is avoided, and the coating quality of the protective layer is improved; and through the relative independence of the steel foot fixed die and the inner die and the change of the position of the glue injection hole, the silicon rubber can drive the insulator to float slightly integrally, a certain moving space is provided, the upper surface of the umbrella skirt is coated more uniformly, the phenomenon of ceramic damage caused by rigid fixation of the insulator is avoided, the glue injection pressure is controlled through the glue injection flow, and the ceramic damage rate is reduced together.
2. The top of the steel cap positioning cavity is communicated with the first through hole, the side wall of the steel cap positioning cavity is provided with the vent groove, and the bottom of the vent groove is communicated with the coating cavity, so that air generated in the coating cavity in the injection molding process can be discharged through the vent groove, the steel cap positioning cavity and the first through hole, the silicon rubber can be ensured to completely flow in the coating cavity, the upper surface of the umbrella skirt is completely coated, and the coating quality is improved.
3. The bottom of the jack is communicated with the second through hole, so that air at the lower part of the coating cavity can be discharged through the jack and the second through hole, the silicon rubber can be ensured to completely flow along the lower part of the coating cavity, the lower surface of the umbrella skirt is completely coated, and the coating quality is improved.
4. Because the bottom of the steel foot fixing mold is provided with the exhaust hole, the upper end of the exhaust hole is communicated with the steel foot fixing cavity, and the lower end of the exhaust hole is communicated with the second through hole, the silicon rubber can be ensured to smoothly flow to the upper part of the completely coated steel foot, and the integrity of the insulator coating layer is further improved.
5. Because the vertical ejection mechanisms penetrate through the first through hole and the second through hole respectively, the ejection mechanisms can apply assistance to the insulator during demolding, demolding is easier, damage to a coating layer or damage to a ceramic umbrella skirt can be avoided, and the qualification rate is further improved.
6. Because the moving platform is arranged below the lower die, the first outer die and the second outer die are respectively connected with the moving platform in a sliding mode, so that the first outer die and the second outer die can move more smoothly, the insulator is prevented from being damaged in the die assembly or demolding process, and the ceramic damage rate is further reduced.
7. Because the outer mold frame is arranged on the movable platform, the first outer mold and the second outer mold are respectively connected to the inner side of the outer mold frame through the linear guide rail, the outer mold frame can limit the first outer mold and the second outer mold to move in a specific range, the stability of mold closing and demolding processes is improved, and the collision damage of the molds to the umbrella skirt is effectively avoided. The linear guide rail is provided with the limiting mechanism, the limiting mechanism can limit the moving distance of the first outer die and the second outer die, the outer die and the inner die after die assembly are coaxial, and the umbrella skirt of the insulator is coaxial with the coating cavity, so that collision damage of the outer die to the umbrella skirt can be avoided, and the ceramic damage rate is further reduced.
8. Because the movable platform is connected with the lifting device, the lifting device can drive the movable platform to move up and down, so that the die closing or opening process of the upper die and the lower die is easier to operate.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the exploded structure of FIG. 1;
fig. 3 is a schematic view of the structure in direction a of fig. 2.
Labeled as:
1. an insulator; 11. a steel cap; 12. an umbrella skirt; 13. a steel foot; 2. an upper die; 20. an upper mold cavity; 21. a steel cap positioning cavity; 22. a first through hole; 23. a third through hole; 3. a lower die; 30. a cladding cavity; 31. an inner mold; 310. a jack; 311. a second through hole; 32. an outer mold; 321. a first outer mold; 322. a second outer mold; 33. fixing the steel leg; 330. an exhaust hole; 331. a left module; 332. a right module; 34. a nut; 41. a first ejection cylinder; 42. a second ejection cylinder; 5. injecting glue holes; 6. a mobile platform; 7. a linear guide rail; 8. a lift cylinder.
Detailed Description
The invention will be further described with reference to the following examples:
in the invention, the position relation between the inner die and other components in the horizontal direction is taken as reference, the direction towards the center of the inner die is taken as inner, and conversely, the direction away from the center of the inner die is taken as outer.
In this embodiment, taking a double-skirt porcelain insulator 1 as an example, the insulator 1 includes a steel cap 11, two layers of disc-shaped sheds 12 and steel legs 13 fixed together.
As shown in fig. 1-3, the invention provides a coating die for an insulator composite layer, which comprises an upper die 2 and a lower die 3. The lower die 3 comprises an inner die 31 and an outer die 32 sleeved on the inner die 31, the outer die 32 comprises a first outer die 321 and a second outer die 322 which are arranged oppositely, the first outer die 321 and the second outer die 322 are coated on the inner die 31, the upper die 2, the outer die 32 and the inner die 31 jointly enclose a coating cavity 30, the shape of the coating cavity 30 is matched with that of the insulator umbrella skirt 12, and a pressure sensor is arranged in the coating cavity 30. The side wall of the outer mold 32 is provided with a glue injection hole 5, the glue injection hole 5 is communicated with the lower part of the coating cavity 30, and the glue injection hole is connected with a flow regulating valve (not shown in the figure). The outer side of the outer die is further provided with a controller, the pressure sensor and the flow regulating valve are respectively electrically connected with the controller, and the controller can control the opening size of the flow regulating valve in real time according to the pressure value detected by the pressure sensor. The coating cavity 30 may be formed by the inner mold 31 and the upper mold 2, but the upper mold 2, the outer mold 32 and the inner mold 31 may be formed to facilitate the demolding.
The bottom of the upper die 2 is provided with a steel cap positioning cavity 21, the steel cap positioning cavity 21 is provided with a bayonet, and the bayonet is positioned on the bottom wall of the upper die 2; jack 310 has been seted up between two parties to centre mould 31 roof, and steel cap location chamber 21 and the coaxial setting of jack 310, and steel cap location chamber 21 can restrict the displacement of steel cap 11 on the horizontal direction, and jack 310 can restrict the displacement of steel foot 13 on the horizontal direction, has avoided insulator 1 to take place the displacement influence product quality on the horizontal direction. A first through hole 22 communicated with the steel cap positioning cavity 21 is formed in the top wall of the upper die, and a first ejection oil cylinder 41 which faces downwards vertically penetrates through the first through hole 22. The side wall of the steel cap positioning cavity 21 is provided with a vent groove 210, the upper end of the vent groove 210 is communicated with the first through hole, and the lower end is communicated with the top of the coating cavity 30. The bottom wall of the inner mold 31 is provided with a second through hole 311 communicated with the jack 310, and a second ejection cylinder 42 which is vertically upward penetrates through the second through hole 311. The steel foot fixing die 33 is inserted into the insertion hole 310, the steel foot fixing die 33 comprises a left die block 331 and a right die block 332, the left die block 331 and the right die block 332 jointly enclose a steel foot fixing cavity matched with the steel foot 13, and the left die block 331 and the right die block 332 are detachably fastened together through a locking device such as a nut 34. The bottom of the steel leg fixed die 33 consisting of the left module 331 and the right wood block 332 is provided with an exhaust hole 330, the upper end of the exhaust hole 330 is communicated with the coating cavity 30, and the lower end is communicated with the second through hole 311. The bottom of the upper die 2 is provided with an upper die cavity 20, the shape of the upper die cavity 20 is matched with the shape of the outer wall of an outer die 32, the outer die 32 can be inserted into the upper die cavity 20, and a third through hole 23 is formed in the position, corresponding to the glue injection hole 5, of the upper die 2.
According to the shape of the insulator, the upper end surface of the steel leg fixing die 33 can be higher than the top wall of the inner die 31, so that the coating layer on the central bottom surface of the umbrella skirt can be prevented from being too thick. The outer diameter of the steel leg fixing die 33 inside the insertion hole 310 is gradually reduced from top to bottom, which can facilitate the mold release.
The lower die 3 is provided with a moving platform 6 below, the inner die 31 is fixed with the moving platform 6, the moving platform 6 is provided with an outer die frame 9, the first outer die 321 and the second outer die 322 are respectively connected to the inner side of the outer die frame 9 in a sliding manner through linear guide rails 7, the outer die frame 9 can limit the first outer die 321 and the second outer die 322 to move within a specific range, and the outer die 32 is effectively prevented from being shifted in position during die assembly or die disassembly. The linear guide 7 is provided with a limiting mechanism (not shown in the figure), the limiting mechanism can limit the moving distance of the first outer mold 321 and the second outer mold 322, when the first outer mold 321 and the second outer mold 322 move inwards to the maximum, the two molds are closed, and the coating cavity 30 is coaxial with the inner mold 31. The bottom of the movable platform 6 is connected with a lifting oil cylinder 8. The specific structures of the linear guide rail 7 and the limiting mechanism are the prior art, and are not described in detail herein.
The first ejection cylinder 41 and the second ejection cylinder 42 may be cylinders, telescopic rods, or other telescopic devices, as long as they can generate appropriate impact on the insulator to achieve good demolding.
The working process of the embodiment:
first, the left module 331 and the right module 332 of the steel leg fixing module 33 are covered on the outer side of the insulator steel leg 13, and the left module 331 and the right module 332 are fixed together by a locking device such as a nut 34. The steel leg fixing die 33 is vertically put into the insertion hole 310 of the inner die 31, and the steel cap 11 and the umbrella skirt 12 are positioned above the inner die 31. The first outer mold 321 and the second outer mold 322 are pushed to move inwards until the molds are completely closed, then the lifting oil cylinder 8 is started, the lifting oil cylinder 8 drives the moving platform 6 and the lower mold 3 above the moving platform to move upwards until the molds of the upper mold 2 and the lower mold 3 are closed, the outer mold 32 is sleeved in the upper mold cavity 20, and the steel cap 11 is sleeved in the steel cap positioning cavity 310. After the die assembly is completed, the silicon rubber can be injected into the coating cavity 30 through the rubber injection hole 5, and then the working procedures of heating, vulcanizing and the like are carried out. In the glue injection process, the controller can control the opening and closing size of the flow regulating valve in real time according to the pressure value in the coating cavity 30 detected by the pressure sensor, so that the flow of the silicon rubber is controlled in real time, and the uniform and stable flow of the silicon rubber is ensured.
Because the steel foot fixed die 33 and the steel foot 13 wrapped by the same are independent relative to the die, and the glue injection hole 5 is communicated with the lower part of the wrapping cavity 30, in the glue injection process, when the silicon rubber circulates from bottom to top, the silicon rubber can drive the insulator to wholly float slightly, so that the upper surface of the shed is more uniformly wrapped, meanwhile, the collision damage of rigid fixation to the shed of the insulator can be avoided, and the ceramic damage rate is effectively reduced.
When demoulding, the first ejection cylinder 41 is firstly started to help the silicon rubber on the upper surface of the umbrella skirt 12 to be separated from the inner walls of the first outer die 321 and the second outer die 322. And then, starting the lifting oil cylinder 8, wherein the lifting oil cylinder 8 drives the moving platform 6 and the lower die 3 above the moving platform to move downwards until the moving platform is completely separated from the upper die 2. The first and second overmold 321, 322 are pushed outward until the first and second overmold 321, 322 are completely free of the insulator shed 12. And starting the second ejection cylinder 42 to help the silicon rubber layer to be separated from the upper surface of the inner die 31, taking the steel foot fixing die 33 out of the jack 310, disassembling the nut 34, separating the left die block 331 and the right die block 332, and finishing the demoulding.
Besides the flow regulating valve is adopted as the flow regulating mechanism, other specific components capable of regulating the flow can be adopted as long as the flow regulation can be realized, and no specific requirements are made on the structure of the flow regulating valve.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. However, any simple modification, equivalent change and modification of the above embodiments according to the technical spirit of the present invention may be made without departing from the technical spirit of the present invention.
Claims (10)
1. The utility model provides a cladding mould of insulator composite bed, includes mould and lower mould, its characterized in that: the lower die comprises an inner die and an outer die sleeved on the inner die, a coating cavity is enclosed between the outer die and the inner die, or the outer die, the inner die and the upper die together enclose the coating cavity, the outer die comprises a first outer die and a second outer die which are symmetrically arranged, a glue injection hole is formed in the outer die and communicated with the lower part of the coating cavity, the glue injection hole is connected with a flow regulating mechanism, a pressure sensor is arranged in the coating cavity, and the lower die further comprises a controller, and the controller controls the opening degree of the flow regulating mechanism according to a signal of the pressure sensor;
a steel cap positioning cavity is arranged in the upper die, the steel cap positioning cavity is provided with a bayonet, the bayonet is positioned on the bottom wall of the upper die, the top wall of the inner die is provided with an insertion hole, and the steel cap positioning cavity and the insertion hole are coaxially arranged; a steel foot fixing die is inserted into the insertion hole and comprises a left die block and a right die block which are detachably mounted together, and the left die block and the right die block jointly enclose a steel foot fixing cavity; the bottom of the upper die is provided with an upper die cavity, and the outer die can be inserted into the upper die cavity.
2. The covering mold for insulator composite layers according to claim 1, wherein: a first through hole communicated with the steel cap positioning cavity is formed in the upper die.
3. The covering mold for insulator composite layers according to claim 2, wherein: the side wall of the steel cap positioning cavity is provided with a vent groove, the lower end of the vent groove is communicated with the coating cavity, and the upper end of the vent groove is communicated with the first through hole.
4. The mold for covering an insulator composite layer according to claim 3, wherein: the first through hole is communicated with the top wall of the upper die, and a first ejection mechanism which vertically faces downwards penetrates through the first through hole.
5. The covering mold for insulator composite layers according to claim 1, wherein: and a second through hole communicated with the jack is formed in the inner die.
6. The covering mold for insulator composite layers according to claim 5, wherein: the bottom of the steel foot fixing mold is provided with an exhaust hole, the upper end of the exhaust hole is communicated with the steel foot fixing cavity, and the lower end of the exhaust hole is communicated with the second through hole.
7. The covering mold for insulator composite layers according to claim 5, wherein: the second through hole is communicated with the bottom wall of the inner die, and a second ejection mechanism which is vertically upward penetrates through the second through hole.
8. An overmold for an insulator composite layer, as recited in any one of claims 1 to 7, further comprising: the inner mold is fixed on the mobile platform, and the first outer mold and the second outer mold are respectively connected with the mobile platform in a sliding mode.
9. The covering mold for insulator composite layers according to claim 8, wherein: the movable platform is provided with an outer mold frame, the first outer mold and the second outer mold are respectively connected to the inner wall of the outer mold frame through linear guide rails, and the linear guide rails are provided with limiting mechanisms.
10. The covering mold for an insulator composite layer according to claim 9, wherein: the mobile platform is connected with a lifting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310006651.0A CN115742190A (en) | 2023-01-04 | 2023-01-04 | Cladding mould of insulator composite bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310006651.0A CN115742190A (en) | 2023-01-04 | 2023-01-04 | Cladding mould of insulator composite bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115742190A true CN115742190A (en) | 2023-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310006651.0A Pending CN115742190A (en) | 2023-01-04 | 2023-01-04 | Cladding mould of insulator composite bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115742190A (en) |
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2023
- 2023-01-04 CN CN202310006651.0A patent/CN115742190A/en active Pending
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