CN111976084B - Composite insulator manufacturing process - Google Patents
Composite insulator manufacturing process Download PDFInfo
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- CN111976084B CN111976084B CN202010835832.0A CN202010835832A CN111976084B CN 111976084 B CN111976084 B CN 111976084B CN 202010835832 A CN202010835832 A CN 202010835832A CN 111976084 B CN111976084 B CN 111976084B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
- B29C45/14221—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure by tools, e.g. cutting means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
Abstract
The invention relates to a composite insulator manufacturing process, which uses an injection molding mold, wherein the injection molding mold comprises a base frame, a mounting frame, an upper mold, a lower mold, a lifting cylinder and a vibration mechanism, and the specific process flow for manufacturing the composite insulator by adopting the injection molding mold is as follows: the core rod shaping, the core rod is polished, the injection assembly, ejecting drawing of patterns and shape are maintained, go up the mould and include mould main part, go up shaping block and last driven gear, the lower mould includes lower mould main part, lower shaping block, lower driven gear, telescopic cylinder and solid fixed ring. The invention can drive the rubber material to rock within a certain range in the injection process, ensures the uniform distribution of the rubber material in the mold, avoids the defects of air holes and the like caused by the uneven distribution of the rubber material, can drive the mold to vibrate through the vibration mechanism during demolding, and achieves the purpose of accelerating the separation speed of the mold and the silicon rubber umbrella skirt.
Description
Technical Field
The invention relates to the technical field of power accessories, in particular to a manufacturing process of a composite insulator.
Background
The composite insulator is different from porcelain and glass insulators, is a novel insulator with a composite structure and mainly comprises a core rod, an umbrella skirt, a sheath, metal accessories and the like. The insulator is characterized in that the mechanical strength and the internal and external insulation performance which the insulator should have are distributed to different insulation materials for bearing.
In the manufacturing process of the composite insulator, the insulator shed needs to be manufactured by using an injection molding method matched with a mold, and the existing processing process for manufacturing the insulator shed by using the injection molding method has some problems:
(1) in the glue injection process, as the glue material has high viscosity and poor flowing property, the glue material cannot be uniformly distributed in the die cavity, and the part with insufficient glue material distribution has the defect of glue shortage or insufficient strength, so that the use performance of the insulator is influenced.
(2) In the demolding process, the upper mold and the lower mold are separated directly by using the ejection mechanism, if the ejection force is too large, the tearing condition of the silicon rubber umbrella skirt due to too large tension can occur, and if the ejection force is not enough, the silicon rubber umbrella skirt and the molds can not be separated rapidly, so that the demolding difficulty is large.
In order to solve the problems, improve the distribution uniformity of rubber materials and reduce the demolding difficulty, the invention provides a composite insulator manufacturing process.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
the utility model provides a compound insulator preparation technology, its has used an injection moulding mould, and this injection moulding mould includes bed frame, mounting bracket, last mould, lower mould, lift cylinder and vibrations mechanism, and the concrete process flow that adopts above-mentioned injection moulding mould preparation compound insulator is as follows:
s1, core rod molding, namely, impregnating glass fiber with epoxy resin, and then preparing a core rod through vacuum injection, continuous pultrusion and curing;
s2, core rod polishing: the surface of the core rod is polished, so that the contact area between the surface of the core rod and a sizing material is increased, and the bonding performance is improved;
s3, injection assembly, namely, after the core rod is placed on the lower die, the upper die and the lower die are driven to be tightly attached through a lifting cylinder, and glue is injected between the upper die and the lower die;
s4, ejection and demolding, namely driving the upper die to be separated from the lower die through the common cooperation of the lifting cylinder and the vibration mechanism so as to take out the core rod coated with the silicon rubber umbrella skirt;
s5, shape finishing: trimming the flash at the edge of the silicon rubber umbrella skirt and the die closing seam to obtain a finished composite insulator;
the lower end of the upper die is closely attached to the upper end of the lower die, the lower die is arranged on the front side of the base frame, and a vibration mechanism is arranged between the upper die and the lower die;
the base frame comprises a base plate, a rotating gear, a rotating rod and a rotating motor, wherein a rotating groove is formed in the middle position of the front side of the base plate, a rotating hole communicated with the rotating groove is formed in the rear side of the rotating groove, the rotating gear is installed in the rotating groove through a bearing, the rear side of the rotating gear is connected with one end of the rotating rod, the rotating rod is located in the rotating hole, the other end of the rotating rod is connected with an output shaft of the rotating motor through a coupler, the rotating motor is installed on the rear side of the base plate through a motor base, and a square groove is formed in the upper end of the base plate;
the upper die comprises an upper die main body, an upper shaping block and an upper driven gear, wherein upper mounting grooves are symmetrically formed in the left and right of the lower end of the upper die main body, the upper shaping block is installed in the upper mounting grooves in a sliding fit mode, a spring is connected between the upper shaping block and the upper mounting grooves, the upper shaping block can rotate in the upper mounting grooves, when the upper shaping block stops rotating, the upper shaping block can return to the original position under the elastic action of the spring, an upper shaping groove is formed in the upper shaping block, the front end and the rear end of the upper shaping block are provided with the upper driven gear, the cross sections of the upper shaping block and the upper driven gear are of a semicircular structure, injection ports are symmetrically formed in the front and rear of the middle of the upper shaping block, injection pipes are installed at the upper ends of the injection ports, strip-shaped openings corresponding to the positions of the injection ports one by one are formed in the upper end of the upper die main body, and the side walls of the injection pipes are connected with the inner walls of the strip-shaped openings in a sliding fit mode, telescopic holes are formed in the left end and the right end of the upper die main body; after the die is closed, glue can be injected between the upper shaping groove and the lower shaping groove through the injection tube.
The lower die comprises a lower die main body, a lower shaping block, a lower driven gear, a telescopic cylinder and a fixing ring, wherein lower mounting grooves are formed in the upper end of the lower die main body in a bilateral symmetry manner, the lower shaping block is mounted in the lower mounting groove in a sliding fit manner, a spring is connected between the lower shaping block and the lower mounting groove, a lower shaping groove is formed in the lower shaping block, lower driven gears are mounted at the front end and the rear end of the lower shaping block respectively, the cross sections of the lower shaping block and the lower driven gear are of a semicircular structure, telescopic holes are formed in the left end and the right end of the lower die main body respectively, the lower end of the lower die main body is mounted in a square groove formed in the upper end of a base plate in a sliding fit manner, a spring is connected between the lower die main body and the square groove, telescopic cylinders are symmetrically mounted at the front end and the rear end of the lower die main body respectively, the fixing ring is mounted on the telescopic end of each telescopic cylinder, and a rubber sheet is arranged in the fixing ring; after the upper die is tightly pressed at the upper end of the lower die, the distance between the lower die main body and the base plate is reduced, the lower driven gear is meshed with the upper end of the rotary gear, so that the lower driven gear and the upper driven gear connected with the lower driven gear can be driven by the driving of the rotary motor to rotate in a reciprocating manner within a certain range, when glue is injected, the upper shaping block and the lower shaping block which rotate in a reciprocating manner can assist glue to be uniformly distributed, before demoulding after the silicon rubber umbrella skirt is formed, the fixing ring can be driven by the telescopic cylinder to move inwards in the annular direction, so that the fixing ring can be sleeved at the two ends of the core rod, under the blocking effect of friction force generated between the rubber sheet and the core rod, the core rod and the umbrella skirt which is covered on the outer side of the core rod cannot synchronously rotate along with the upper shaping block and the lower shaping block, therefore, the upper shaping block and the lower shaping block can generate relative displacement with the umbrella skirt during the reciprocating rotation, and gaps are gradually generated between the umbrella skirt and the upper shaping block and the lower shaping block, the difficulty of demoulding is reduced.
Preferably, the vibration mechanism comprises an upper fixed rack, a lower fixed rack, an upper rotating gear, a lower rotating gear, a vibration rod and a matching piece, the upper fixed rack is installed at the lower end of the installation frame, the lower fixed rack is installed on the side wall of the upper die, the front end of the upper fixed rack is meshed with the rear end of the upper rotating gear, the front end of the lower fixed rack is meshed with the rear end of the lower rotating gear, the front ends of the upper rotating gear and the lower rotating gear are connected with the upper end of the base plate through bearings, the rear ends of the upper rotating gear and the lower rotating gear are both provided with the vibration rod, and the upper end of the vibration rod is tightly attached to the side wall of the matching piece; during the drawing of patterns, drive through the lift cylinder and go up mould upward movement, at the in-process of last mould upward movement, the cooperation of last fixed rack is rotated down to the last driven gear, and lower driven gear rotates under the cooperation of fixed rack down, and then drives the vibrations pole and rotate in step, and at vibrations pole rotation in-process, the fitting piece changes with the contact position of vibrations pole.
Preferably, the vibration rod comprises a rotating end, a telescopic end and a convex ring, the rotating end is mounted on the rotating side wall of the upper rotating gear or the lower rotating gear, the inner side of the rotating end is connected with one end of the telescopic end in a sliding fit mode, a spring is connected between the rotating end and the telescopic end, the other end of the telescopic end is of a spherical rubber structure, the convex ring is sleeved on the outer wall of the telescopic end, the convex ring is of an annular structure with uneven thickness, the outer side of the convex ring is of an arc surface structure, and the inner side of the convex ring is of a straight surface structure; the convex ring rotates along with the rotating end, the contact position of the matching piece and the convex ring is changed, when the matching piece is in contact with the point with different thickness of the convex ring, inward thrust generated by the matching piece to the convex ring is different in magnitude, and then the telescopic end connected with the convex ring can be driven to perform left-right telescopic motion, so that the purpose of conveying vibration between the die and the workpiece is achieved.
Preferably, the difference between the maximum value and the minimum value of the thickness of the convex ring is equal to the distance between the spherical rubber structure at the telescopic end and the upper shaping block or the lower shaping block, so that the spherical rubber structure at the telescopic end can collide with the upper shaping block or the lower shaping block in the process of moving the telescopic end left and right.
Preferably, when the upper die is pressed against the lower die, the upper end of the rotary gear is engaged with the lower end of the lower driven gear, and when the upper die is no longer pressed against the lower die, the upper end of the rotary gear is not engaged with the lower end of the lower driven gear.
Preferably, the upper rotating gear lower extreme bilateral symmetry is provided with the butt joint pole, and lower rotating gear upper end bilateral symmetry has seted up the butt joint hole, through unsmooth cooperation mode sliding connection between butt joint pole and the butt joint hole, consequently will go up the mould and sticis on the lower mould after, and the upper rotating gear can rotate in step along with lower rotating gear.
Preferably, the equal minor face in cross-section of the sheet rubber that sets up on the solid fixed ring inner wall is close to the inside isosceles trapezoid structure of solid fixed ring, conveniently extrudes the plug into the solid fixed ring.
The invention has the beneficial effects that:
1. the invention can drive the rubber material to rock within a certain range in the injection process, ensures the uniform distribution of the rubber material in the mold, avoids the defects of air holes and the like caused by the uneven distribution of the rubber material, can drive the mold to vibrate through the vibration mechanism during demolding, and achieves the purpose of accelerating the separation speed of the mold and the silicon rubber umbrella skirt.
2. When the upper die and the lower die are attached to each other, the lower driven gear and the upper driven gear connected with the lower driven gear can be driven by the rotating motor to rotate in a reciprocating mode within a certain range, glue can be uniformly distributed during glue injection, the upper shaping block and the lower shaping block can be driven to generate relative displacement with the umbrella skirt during the reciprocating rotation process before demoulding after the silicone rubber umbrella skirt is formed, gaps are gradually generated between the umbrella skirt and the upper shaping block and between the umbrella skirt and the lower shaping block, and the difficulty in demoulding is reduced.
3. According to the vibration mechanism provided by the invention, the upper die is driven to move upwards through the lifting cylinder during demoulding, the upper rotating gear rotates under the coordination of the upper fixed rack, the lower rotating gear rotates under the coordination of the lower fixed rack, so that the vibration rod is driven to synchronously rotate, the contact position of the matching piece and the convex ring is changed in the rotating process of the convex ring along with the rotating end, the inward thrust generated by the matching piece on the convex ring is changed along with the change of the contact position, and the telescopic end connected with the convex ring can be driven to do left-right telescopic motion, so that the aim of transmitting vibration between the die and a workpiece is fulfilled.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a front cross-sectional view of the injection mold of the present invention;
FIG. 3 is a right side sectional view of a portion of the injection mold of the present invention;
FIG. 4 is a top view of the upper die body of the present invention;
FIG. 5 is a top view of the lower die portion of the present invention;
FIG. 6 is a cross-sectional view in the forward direction of the engagement between the upper and lower driven gears of the present invention;
fig. 7 is an enlarged view of the portion a of fig. 2 according to the present invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1 to 7, a manufacturing process of a composite insulator uses an injection molding mold, the injection molding mold includes a base frame 1, a mounting frame 2, an upper mold 3, a lower mold 4, a lifting cylinder 5 and a vibration mechanism 6, and the specific process flow of manufacturing the composite insulator by using the injection molding mold is as follows:
s1, core rod molding, namely, impregnating glass fiber with epoxy resin, and then preparing a core rod through vacuum injection, continuous pultrusion and curing;
s2, core rod polishing: the surface of the core rod is polished, so that the contact area between the surface of the core rod and a sizing material is increased, and the bonding performance is improved;
s3, injection assembly, namely, after the core rod is placed on the lower die 4, the upper die 3 is driven to be tightly attached to the lower die 4 through the lifting cylinder 5, and glue is injected between the upper die 3 and the lower die 4;
s4, ejection and demolding, namely, the upper die 3 is driven to be separated from the lower die 4 through the cooperation of the lifting cylinder 5 and the vibration mechanism 6 so as to take out the core rod coated with the silicon rubber umbrella skirt;
s5, shape finishing: trimming the flash at the edge of the silicon rubber umbrella skirt and the die closing seam to obtain a finished composite insulator;
the rear side of the base frame 1 is provided with a mounting frame 2, the lower end of the mounting frame 2 is connected with an upper die 3 through a lifting cylinder 5, the lower end of the upper die 3 is closely attached to the upper end of a lower die 4, the lower die 4 is arranged on the front side of the base frame 1, and a vibration mechanism 6 is arranged between the upper die 3 and the lower die 4;
the pedestal 1 comprises a base plate 11, a rotating gear 12, a rotating rod 13 and a rotating motor 14, wherein a rotating groove is formed in the middle position of the front side of the base plate 11, a rotating hole communicated with the rotating groove is formed in the rear side of the rotating groove, the rotating gear 12 is installed in the rotating groove through a bearing, the rear side of the rotating gear 12 is connected with one end of the rotating rod 13, the rotating rod 13 is located in the rotating hole, the other end of the rotating rod 13 is connected with an output shaft of the rotating motor 14 through a coupler, the rotating motor 14 is installed on the rear side of the base plate 11 through a motor base, and a square groove is formed in the upper end of the base plate 11;
the upper die 3 comprises an upper die main body 31, an upper shaping block 32 and an upper driven gear 33, the lower end of the upper die main body 31 is bilaterally symmetrically provided with upper mounting grooves, the upper shaping block 32 is arranged in the upper mounting grooves in a sliding fit mode, a spring is connected between the upper shaping block 32 and the upper mounting grooves, the upper shaping block 32 can rotate in the upper mounting grooves, when the upper shaping block 32 stops rotating, the upper shaping block 32 can return to the original position under the elastic force action of the spring, the upper shaping block 32 is provided with an upper shaping groove, the front end and the rear end of the upper shaping block 32 are provided with the upper driven gear 33, the cross sections of the upper shaping block 32 and the upper driven gear 33 are of a semicircular structure, the middle part of the upper shaping block 32 is symmetrically provided with injection ports in the front and back direction, the upper ends of the injection ports are provided with injection tubes, the upper end of the upper die main body 31 is provided with strip-shaped openings corresponding to the positions of the injection ports one by one, and the side walls of the injection tubes are connected with the inner walls of the strip-shaped openings in a sliding fit mode, telescopic holes are formed in the left end and the right end of the upper die main body 31; after the die is closed, glue can be injected between the upper shaping groove and the lower shaping groove through the injection tube.
The lower die 4 comprises a lower die main body 41, a lower shaping block 42, a lower driven gear 43, a telescopic cylinder 44 and a fixing ring 45, the upper end of the lower die main body 41 is bilaterally symmetrically provided with a lower mounting groove, the lower shaping block 42 is mounted in the lower mounting groove in a sliding fit manner, a spring is connected between the lower shaping block 42 and the lower mounting groove, the lower shaping groove is formed in the lower shaping block 42, the lower driven gear 43 is mounted at the front end and the rear end of the lower shaping block 42, the cross sections of the lower shaping block 42 and the lower driven gear 43 are both in a semicircular structure, the left end and the right end of the lower die main body 41 are both provided with telescopic holes, the lower end of the lower die main body 41 is mounted in a square groove formed in the upper end of the base plate 11 in a sliding fit manner, the spring is connected between the lower die main body 41 and the square groove, the telescopic cylinder 44 is bilaterally symmetrically mounted at the front end and the rear end of the lower die main body 41, and the telescopic cylinder 44 is provided with the fixing ring 45, a rubber sheet is arranged in the fixing ring 45; after the upper die 3 is tightly pressed on the upper end of the lower die 4, the distance between the lower die main body 41 and the base plate 11 is reduced, the lower driven gear 43 is meshed with the upper end of the rotary gear 12, so that the lower driven gear 43 and the upper driven gear 33 connected with the lower driven gear 43 are driven by the driving of the rotary motor 14 to rotate in a reciprocating manner within a certain range, during glue injection, the upper shaping block 32 and the lower shaping block 42 which rotate in a reciprocating manner can assist glue to be uniformly distributed, before demoulding after the silicon rubber shed is formed, the fixing ring 45 is driven by the telescopic cylinder 44 to move inwards, so that the fixing ring 45 can be sleeved on two ends of the core rod, under the blocking effect of the friction force generated between the rubber sheet and the core rod, the core rod and the shed covering the outer side of the core rod cannot rotate synchronously with the upper shaping block 32 and the lower shaping block 42, and therefore the upper shaping block 32 and the lower shaping block 42 can generate relative displacement with the shed in the reciprocating rotation process, gaps are gradually formed among the umbrella skirt, the upper shaping block 32 and the lower shaping block 42, and the difficulty of later demoulding is reduced.
The vibration mechanism 6 comprises an upper fixed rack 61, a lower fixed rack 62, an upper rotating gear 63, a lower rotating gear 64, a vibration rod 65 and a matching piece 66, the upper fixed rack 61 is installed at the lower end of the installation frame 2, the lower fixed rack 62 is installed on the side wall of the upper die 3, the front end of the upper fixed rack 61 is meshed with the rear end of the upper rotating gear 63, the front end of the lower fixed rack 62 is meshed with the rear end of the lower rotating gear 64, the front ends of the upper rotating gear 63 and the lower rotating gear 64 are connected with the upper end of the base plate 11 through bearings, the vibration rod 65 is installed at the rear ends of the upper rotating gear 63 and the lower rotating gear 64, and the upper end of the vibration rod 65 is tightly attached to the side wall of the matching piece 66; during the drawing of patterns, drive through lift cylinder 5 and go up mould 3 upward movement, at the in-process of last mould 3 upward movement, upper rotating gear 63 rotates under the cooperation of last fixed rack 61, and lower rotating gear 64 rotates under the cooperation of fixed rack 62 down, and then drives vibrations pole 65 and carry out synchronous rotation, and at vibrations pole 65 rotation in-process, the contact position of fitting piece 66 and vibrations pole 65 changes.
The vibration rod 65 comprises a rotating end 651, a telescopic end 652 and a convex ring 653, wherein the rotating end 651 is mounted on the side wall of the upper rotating gear 63 or the lower rotating gear 64, the inner side of the rotating end 651 is connected with one end of the telescopic end 652 in a sliding fit manner, a spring is connected between the rotating end 651 and the telescopic end 652, the other end of the telescopic end 652 is of a spherical rubber structure, the convex ring 653 is sleeved on the outer wall of the telescopic end 652, the convex ring 653 is of an annular structure with uneven thickness, the outer side of the convex ring 653 is of an arc surface structure, and the inner side of the convex ring 653 is of a straight surface structure; when the collar 653 rotates along with the rotating end 651, the contact position between the fitting 66 and the collar 653 changes, and when the fitting 66 is in contact with the collar 653 at different points with different thicknesses, the fitting 66 generates different inward thrusts on the collar 653, so as to drive the telescopic end 652 connected with the collar 653 to perform left-right telescopic motion, thereby achieving the purpose of transmitting vibration between a die and a workpiece.
The difference between the maximum value and the minimum value of the thickness of the convex ring 653 is equal to the distance between the spherical rubber structure of the telescopic end 652 and the upper shaping block 32 or the lower shaping block 42, so that the spherical rubber structure of the telescopic end 652 can collide with the upper shaping block 32 or the lower shaping block 42 in the process that the telescopic end 652 moves left and right.
When the upper die 3 is pressed against the lower die 4, the upper end of the rotary gear 12 is engaged with the lower end of the lower driven gear 43, and when the upper die 3 is no longer pressed against the lower die 4, the upper end of the rotary gear 12 is not engaged with the lower end of the lower driven gear 43.
Go up the rotation gear 63 lower extreme bilateral symmetry and be provided with the butt joint pole, the lower rotation gear 64 upper end bilateral symmetry has seted up the butt joint hole, through unsmooth cooperation mode sliding connection between butt joint pole and the butt joint hole, consequently will go up mould 3 and sticis on lower mould 4 after, go up rotation gear 63 and can carry out synchronous rotation along with lower rotation gear 64.
The equal minor face in cross-section of the sheet rubber that sets up on solid fixed ring 45 inner wall is close to the inside isosceles trapezoid structure of solid fixed ring 45, conveniently extrudes the plug in solid fixed ring 45.
The present invention is not limited to the above-described embodiments, which are described in the specification and illustrated only to illustrate the principle of the present invention, but various changes and modifications may be made within the scope of the present invention as claimed without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a compound insulator manufacture craft, its has used an injection moulding mould, and this injection moulding mould includes bed frame (1), mounting bracket (2), goes up mould (3), lower mould (4), lift cylinder (5) and vibrations mechanism (6), its characterized in that: the specific process flow for manufacturing the composite insulator by adopting the injection molding die is as follows:
s1, core rod molding, namely, impregnating glass fiber with epoxy resin, and then preparing a core rod through vacuum injection, continuous pultrusion and curing;
s2, core rod polishing: the surface of the core rod is polished, so that the contact area between the surface of the core rod and a sizing material is increased, and the bonding performance is improved;
s3, injection assembly, namely, after the core rod is placed on the lower die (4), the upper die (3) is driven to be tightly attached to the lower die (4) through the lifting cylinder (5), and glue is injected between the upper die (3) and the lower die (4);
s4, ejection and demolding, namely driving the upper die (3) to be separated from the lower die (4) through the common matching of the lifting cylinder (5) and the vibration mechanism (6) so as to take out the core rod coated with the silicon rubber umbrella skirt;
s5, shape finishing: trimming the flash at the edge of the silicon rubber umbrella skirt and the die closing seam to obtain a finished composite insulator;
the rear side of the base frame (1) is provided with a mounting frame (2), the lower end of the mounting frame (2) is connected with an upper die (3) through a lifting cylinder (5), the lower end of the upper die (3) is attached to the upper end of a lower die (4), the lower die (4) is arranged on the front side of the base frame (1), and a vibration mechanism (6) is arranged between the upper die (3) and the lower die (4);
the base frame (1) comprises a base plate (11), a rotating gear (12), a rotating rod (13) and a rotating motor (14), a rotating groove is formed in the middle position of the front side of the base plate (11), a rotating hole communicated with the rotating groove is formed in the rear side of the rotating groove, the rotating gear (12) is installed in the rotating groove through a bearing, the rear side of the rotating gear (12) is connected with one end of the rotating rod (13), the rotating rod (13) is located in the rotating hole, the other end of the rotating rod (13) is connected with an output shaft of the rotating motor (14) through a coupler, the rotating motor (14) is installed on the rear side of the base plate (11) through a motor base, and a square groove is formed in the upper end of the base plate (11);
the upper die (3) comprises an upper die main body (31), an upper shaping block (32) and an upper driven gear (33), the lower end of the upper die main body (31) is provided with upper mounting grooves in bilateral symmetry, the upper shaping block (32) is arranged in the upper mounting grooves in a sliding fit mode, a spring is connected between the upper shaping block (32) and the upper mounting groove, an upper shaping groove is formed in the upper shaping block (32), upper driven gears (33) are mounted at the front end and the rear end of the upper shaping block (32), the cross sections of the upper shaping block (32) and the upper driven gears (33) are of a semicircular structure, injection ports are symmetrically formed in the middle of the upper shaping block (32) in the front-back direction, injection pipes are mounted at the upper ends of the injection ports, strip-shaped openings corresponding to the injection ports in a one-to-one mode are formed in the upper end of the upper die main body (31), the side walls of the injection pipes are connected with the inner walls of the strip-shaped openings in a sliding fit mode, and telescopic holes are formed in the left end and the right end of the upper die main body (31);
the lower die (4) comprises a lower die main body (41), a lower shaping block (42), a lower driven gear (43), a telescopic cylinder (44) and a fixing ring (45), wherein lower mounting grooves are symmetrically formed in the upper end of the lower die main body (41) in a bilateral mode, the lower shaping block (42) is mounted in the lower mounting groove in a sliding fit mode, a spring is connected between the lower shaping block (42) and the lower mounting groove, a lower shaping groove is formed in the lower shaping block (42), the lower driven gear (43) is mounted at the front end and the rear end of the lower shaping block (42), the cross sections of the lower shaping block (42) and the lower driven gear (43) are of a semicircular structure, telescopic holes are formed in the left end and the right end of the lower die main body (41), the lower end of the lower die main body (41) is mounted in a square groove formed in the upper end of the base plate (11) in a sliding fit mode, and the spring is connected between the lower die main body (41) and the square groove, telescopic cylinders (44) are symmetrically arranged at the front end and the rear end of the lower die main body (41) in the left-right direction, fixing rings (45) are arranged on telescopic ends (652) of the telescopic cylinders (44), and rubber sheets are arranged in the fixing rings (45);
vibrations mechanism (6) are including last fixed rack (61), lower fixed rack (62), upper rotating gear (63), lower rotating gear (64), vibrations pole (65) and fitting piece (66), it installs at mounting bracket (2) lower extreme to go up fixed rack (61), lower fixed rack (62) are installed on last mould (3) lateral wall, it meshes with upper rotating gear (63) rear end to go up fixed rack (61) front end, lower fixed rack (62) front end meshes with lower rotating gear (64) rear end mutually, upper rotating gear (63) all are connected with base plate (11) upper end with lower rotating gear (64) front end through the bearing, upper rotating gear (63) all install vibrations pole (65) with lower rotating gear (64) rear end, vibrations pole (65) upper end is hugged closely with fitting piece (66) lateral wall mutually.
2. The manufacturing process of the composite insulator according to claim 1, wherein the manufacturing process comprises the following steps: vibrations pole (65) are including rotating end (651), flexible end (652) and bulge loop (653), rotate end (651) and install on last rotating gear (63) or lower rotating gear (64) lateral wall, it is connected with flexible end (652) one end through sliding fit mode to rotate end (651) inboard, and rotate and be connected with the spring between end (651) and flexible end (652), flexible end (652) other end is spherical rubber construction, flexible end (652) outer wall goes up the cover and establishes and install bulge loop (653), bulge loop (653) are the uneven annular structure of thickness, and bulge loop (653) outside is the arc surface structure, the inboard is straight surface type structure.
3. A manufacturing process of a composite insulator according to claim 2, wherein: the difference between the maximum value and the minimum value of the thickness of the convex ring (653) is equal to the distance between the spherical rubber structure of the telescopic end (652) and the upper shaping block (32) or the lower shaping block (42).
4. The manufacturing process of the composite insulator according to claim 1, wherein the manufacturing process comprises the following steps: when the upper die (3) is tightly pressed on the lower die (4), the upper end of the rotary gear (12) is meshed with the lower end of the lower driven gear (43), and when the upper die (3) is not tightly attached to the lower die (4), the upper end of the rotary gear (12) is not meshed with the lower end of the lower driven gear (43).
5. The manufacturing process of the composite insulator according to claim 1, wherein the manufacturing process comprises the following steps: the left and right symmetry of the lower end of the upper rotating gear (63) is provided with a butt joint rod, the left and right symmetry of the upper end of the lower rotating gear (64) is provided with a butt joint hole, and the butt joint rod is connected with the butt joint hole in a sliding mode in a concave-convex matching mode.
6. The manufacturing process of the composite insulator according to claim 1, wherein the manufacturing process comprises the following steps: the cross-section of the rubber sheet arranged on the inner wall of the fixing ring (45) is an isosceles trapezoid structure with a short edge close to the inside of the fixing ring (45).
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| FR2543356B1 (en) * | 1983-03-25 | 1986-01-10 | Ceraver | METHOD AND DEVICE FOR MOLDING THE INSULATING COATING OF A LARGE ORGANIC INSULATOR |
| US20090166925A1 (en) * | 2006-02-16 | 2009-07-02 | Grenier Gary C | Cross-linked polyolefin material blend molded electrical transmission insulating products |
| EP2075803A1 (en) * | 2007-12-21 | 2009-07-01 | ABB Technology AG | Apparatus for controlled molding and demolding of composite insulators |
| CN101284414B (en) * | 2008-05-29 | 2010-10-27 | 白玉成 | Composite long rod insulator injection molding machine |
| CN205112254U (en) * | 2015-09-30 | 2016-03-30 | 安徽创宇电力设备有限公司 | Novel composite insulator injection moulding tip sealing mould |
| US9649797B1 (en) * | 2015-11-09 | 2017-05-16 | Marmon Utility, Llc | Electrical insulator apparatus and method of manufacturing the same |
| CN107573527A (en) * | 2017-08-08 | 2018-01-12 | 芜湖市凯鑫避雷器有限责任公司 | A kind of method for manufacturing silicon rubber compound insulator |
| CN110957086A (en) * | 2018-09-27 | 2020-04-03 | 襄阳国网合成绝缘子有限责任公司 | Wind-resistant composite insulator and preparation process thereof |
| CN109774196A (en) * | 2019-03-19 | 2019-05-21 | 江西省萍乡市宇翔电瓷制造有限公司 | The preparation method of ultra-high-tension power transmission line suspension insulator |
| CN211251054U (en) * | 2019-06-11 | 2020-08-14 | 天津市新玻电力复合绝缘子制造股份有限公司 | Production equipment of electric power composite insulator |
| CN110370549B (en) * | 2019-08-08 | 2020-06-19 | 佛山市赫森模塑科技有限公司 | Micro-foaming injection molding mold |
| CN210939857U (en) * | 2019-10-02 | 2020-07-07 | 巢湖市新宇电力器材销售有限责任公司 | Mould centrifugal device is used in production of cement wire pole |
| CN110993224B (en) * | 2019-12-30 | 2021-07-06 | 国网山东省电力公司淄博供电公司 | Combined automatic insulator production line |
| CN111391226B (en) * | 2020-04-08 | 2022-02-11 | 扬州市双宝电力设备有限公司 | Ultra-high voltage composite insulator production equipment and process |
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Effective date of registration: 20211228 Address after: No.99-6, Xianxin East Road, Nanjing Economic and Technological Development Zone, Nanjing City, Jiangsu Province, 210000 Applicant after: NANJING ELECTRIC INSULATOR CO.,LTD. Address before: Anhui College of water resources and hydropower Applicant before: Hu Mengting |
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