CN108908812B - Filler strip for section bar and manufacturing method thereof - Google Patents
Filler strip for section bar and manufacturing method thereof Download PDFInfo
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- CN108908812B CN108908812B CN201810651311.2A CN201810651311A CN108908812B CN 108908812 B CN108908812 B CN 108908812B CN 201810651311 A CN201810651311 A CN 201810651311A CN 108908812 B CN108908812 B CN 108908812B
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- wrapping layer
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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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/52—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/72—Measuring, controlling or regulating
- B29B7/724—Measuring, controlling or regulating for continuous roller mixers, e.g. calenders
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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
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
- B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
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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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Gasket Seals (AREA)
- Laminated Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a filler strip for a profile, which comprises a framework and a wrapping layer, wherein the framework is in a long strip shape, a longitudinally-through hollow structure is arranged in the framework, and the wrapping layer wraps the framework integrally; the framework is made of aluminum alloy sections; the wrapping layer is made of silicon rubber, the filler strip is wear-resistant and good in support property, and is suitable for being used in section bar production and transportation processes.
Description
Technical Field
The invention belongs to the technical field of metal processing accessories, and particularly relates to a filler strip for a profile and a manufacturing method thereof.
Background
The metal profiles are often required to be stacked in the production and processing process, the storage process or the transportation process, but the stacking of the profiles needs to be up and down corresponding, the interval is proper, the number is proper, and the profiles cannot be stacked excessively, so that the surface quality of the profiles is ensured. The spacer effect is played through setting up the filler strip between the section bar, and the filler strip that the tradition was used generally is the felt filler strip, but the felt filler strip is easy wearing and tearing, and the change frequency is high to increased the manufacturing cost of section bar, and the felt filler strip is soft relatively, and the support nature is relatively poor, and the slope takes place easily for the section bar of stacking, and a large amount of discarded felt filler strip also can the polluted environment moreover.
Therefore, a filler strip with good support, abrasion resistance and no damage to the surface of the profile is needed.
Disclosure of Invention
The invention aims to provide a filler strip for a profile and a manufacturing method thereof.
In order to solve the problems, the invention provides a filler strip for a profile, which comprises a framework and a wrapping layer, wherein the framework is in a long strip shape, a longitudinally-through hollow structure is arranged in the framework, and the wrapping layer wraps the framework integrally; the framework is made of aluminum alloy sections; the wrapping layer is made of a silicon rubber material.
Furthermore, a support strip extending along the length direction is arranged in the hollow structure of the framework, and the support strip is vertically intersected with the two long flat side surfaces.
Furthermore, the number of the supporting bars is N, N is larger than or equal to 1, and the hollow structure of the framework is divided into N +1 cavities by the N supporting bars.
The gasket strip further comprises end sockets, the two ends of the framework are respectively filled with the end sockets, the periphery of each end socket is flush with the outer surface of the framework, and the framework and the end sockets are integrally wrapped by the wrapping layer; the seal head is made of PA plastic.
Furthermore, the head includes shrouding and plug, the plug perpendicular to the medial surface of shrouding, the plug can insert the skeleton in the cavity mouth of hollow structure tip, make the medial surface of shrouding with the terminal surface laminating at skeleton both ends.
Furthermore, the size and the number of the plugs on the end socket correspond to the size and the number of the corresponding cavity openings at the same end of the cavity; the plug can be tightly attached to the inner wall corresponding to the cavity opening after being inserted into the cavity opening.
Furthermore, the skeleton includes two long flat side, two arc sides that are parallel to each other, two long flat side is through two the arc side corresponds the connection and forms hollow structure.
Further, the outer surface of the framework is the outer surface of the long flat side face and the outer surface of the arc-shaped side face, and the wrapping layer on the long flat side face is parallel to the long flat side face.
The manufacturing method of the filler strip for the section comprises the following steps:
carrying out rust and oil removal treatment on the framework;
pouring glue into the treated framework to enable the inner surface and the outer surface of the framework to be uniformly coated with the glue, spreading the framework out, airing and sealing for later use;
the silicon rubber raw materials are put into a rubber mixing mill to be mixed, the temperature of a roller of the rubber mixing mill is controlled between 168-172 ℃, and a silicon rubber sheet with a preset thickness is repeatedly rolled out and cut into the shape and the size of a required product;
cutting the skeleton into a predetermined size;
mounting the filler strip mold on a vulcanizing machine, controlling the mold temperature of the filler strip mold to be between 190 ℃ and 250 ℃, opening the mold and spraying a release agent after the temperature meets the requirement; putting the cut silicon rubber sheet into a filler strip die of a vulcanizing machine, putting the cut silicon rubber sheet into the framework, putting another silicon rubber sheet on the framework, closing the filler strip die for 3-4min, and vulcanizing to integrally wrap the framework by the two silicon rubber sheets to form an encapsulated filler strip;
demolding, taking out the encapsulated filler strip, and scraping off the edge material;
and then placing the encapsulated filler strip into a secondary vulcanization box, heating to 190-210 ℃, and carrying out heat preservation vulcanization treatment for 1.5-2.5h to obtain the filler strip for the profile.
Further, the manufacturing method also comprises the step of preparing end sockets for standby, wherein the end sockets are used for sealing the cavity ports at the two ends of the framework, and the manufacturing of the end sockets comprises the following steps:
baking the PA plastic raw material to 78-82 ℃ and keeping the temperature for 2-3 h;
putting the baked PA plastic into a screw barrel of an injection molding machine, and controlling the temperature of a feeding section, a compression section and a homogenization section of the screw barrel of the injection molding machine between 168-172 ℃, 168-172 ℃ and 163-167 ℃;
injecting the PA plastic discharged from the screw charging barrel into an end socket mold for injection molding production, and cooling after the injection molding is finished to prepare the end socket;
in the manufacturing process, before the framework is placed into the filler strip die, the manufacturing method also comprises the step of plugging and sealing two ends of the framework cut into the preset size by the end sockets;
in the vulcanization process, the framework and the two end sockets are wrapped by the two silicon rubber sheets.
One of the technical schemes has the following beneficial effects:
1) the invention provides a filler strip for a profile and a manufacturing method thereof, wherein the filler strip adopts an aluminum alloy profile framework and a hollow structure, the structural strength and the weight of the filler strip are both considered, the support framework is ensured to be stable, meanwhile, the weight is not too heavy, and a wrapping layer is arranged outside the framework, so that the filler strip is in elastic contact with the profile when bearing the profile, and the surface of the profile is not damaged; the sealing head is arranged to ensure that when the framework is provided with the wrapping layer, wrapping materials cannot enter the hollow structure of the framework, the sealing and the smoothness of the two ends of the filler strip are ensured, and the attractiveness of the filler strip is improved; the periphery of the end socket is flush with the outer surface of the framework, so that the filler strip mold is simple in structure and convenient for integral wrapping of the wrapping layer. The filler strip manufactured by the manufacturing method is suitable for being used in the section bar processing process, and has the advantages of wear resistance, good elasticity and excellent support property. In addition, the wrapping layer is made of silicon rubber, even in a high-temperature environment of more than 200 ℃, the wrapping layer of the silicon rubber can still keep certain flexibility, rebound resilience and surface hardness, the mechanical property is not obviously changed, and the wrapping layer also has excellent insulating property and very good corona resistance and arc resistance.
2) The skeleton has set up two long flat sides, has ensured the stationarity that the filler strip supported, even the higher section bar can not take place to incline in the bearing stack.
Drawings
FIG. 1 is a schematic diagram of one embodiment of the present invention;
FIG. 2 is a cross-sectional view of a backing strip according to one embodiment of the present invention;
FIG. 3 is a schematic view of a skeletal frame in accordance with an embodiment of the present invention;
FIG. 4 is an enlarged view taken at A in FIG. 3;
fig. 5 is a schematic view of a closure according to one embodiment of the present invention.
1-a framework; 101-a cavity port; 2-a wrapping layer; 3-sealing the end; 301-closing plate; 302-a plug;
4-support bar.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.
As shown in fig. 1, an embodiment of the present invention provides a filler strip for a profile, including a framework 1 and a wrapping layer 2, where the framework 1 is a strip, and a longitudinally through hollow structure is arranged inside the framework 1, and the hollow structure reduces the weight of the framework 1 and ensures that the overall weight of the filler strip is moderate; the framework 1 is integrally wrapped by the wrapping layer 2, the outer surface of the wrapping layer 2 is smooth, and the elastic contact between the cushion strip and the profile is ensured by the wrapping layer 2, so that the surface of the profile cannot be damaged in the bearing process of the cushion strip; the framework 1 is made of aluminum alloy sections, and the framework 1 of the aluminum alloy sections ensures the overall structural strength of the filler strip support; the wrapping layer 2 is made of silicon rubber.
Preferably, a support strip 4 extending along the length direction is arranged in the hollow structure of the framework 1, and the support strip 4 is vertically intersected with the two long flat side surfaces at the same time. The support bars 4 further strengthen the strength of the hollow structure; further, the frame 1 is not easily deformed.
Preferably, the number of the supporting bars 4 is N, N is larger than or equal to 1, and the hollow structure of the framework 1 is divided into N +1 cavities by the N supporting bars 4. In this embodiment, as shown in fig. 2, two support bars 4 are symmetrically disposed on the long flat side at intervals, so that three cavities are formed in the hollow structure. As shown in fig. 2, the supporting bars 4 form three cavities in the hollow structure of the framework 1, so that each end of the framework 1 has three cavity openings 101, and as shown in fig. 5, the end socket 3 is provided with three plugs 302 which can be inserted into the three cavity openings 101 at one end of the framework 1 correspondingly to close the end of the hollow structure of the framework 1.
Preferably, the filler strip further comprises end sockets 3, the end sockets 3 are respectively filled at two ends of the framework 1, the periphery of the end sockets 3 is flush with the outer surface of the framework, and the framework 1 and the end sockets 3 are integrally wrapped by the wrapping layer 2; the seal head 3 is made of PA plastic. The end enclosure 3 is arranged to ensure that when the framework 1 is provided with the wrapping layer, wrapping materials cannot enter the hollow structure of the framework 1 so as to avoid unnecessary wrapping materials from being wasted, and on the other hand, stable air pressure in the hollow structure is ensured, so that the filler strip cannot deform when being pressed by the sectional material; meanwhile, the airtightness and smoothness of the two ends of the packing strip after being wrapped are ensured, the attractiveness of the packing strip is improved, and the periphery of the seal head 3 is flush with the outer surface of the framework, so that the mold for wrapping is simple in structure, and the wrapping layer can be wrapped integrally.
Preferably, the seal head 3 includes a closing plate 301 and a plug 302, the plug 302 is perpendicular to the inner side surface of the closing plate 301, and the plug 302 can be inserted into the cavity opening 101 at the end of the hollow structure of the framework 1, so that the inner side surface of the closing plate 301 is attached to the end surfaces of the two ends of the framework 1.
Preferably, the size and the number of the plugs 302 on the end socket 3 correspond to the size and the number of the cavity ports 101 corresponding to the same end of the cavity; after being inserted into the cavity opening 101, the plug 302 can be tightly attached to the inner wall corresponding to the cavity opening 101. Set up like this to make plug 302 be difficult to drop from cavity mouth 101, ensure the reliability of being connected of head 3 and skeleton 1, avoid dropping the quality that influences the filler strip to the silicon rubber at the parcel in-process plug. Preferably, glue can be coated on two ends of the framework 1 or the inner side surface of the inserting plate, and the end sockets 3 can be further fixed.
Preferably, the framework 1 comprises two long flat side surfaces and two arc side surfaces which are parallel to each other, and the two long flat side surfaces are correspondingly connected through the two arc side surfaces to form the hollow structure.
Preferably, the outer surface of the framework 1 is the outer surface of the long flat side and the outer surface of the arc side, and the wrapping layer 2 on the long flat side is parallel to the long flat side. The two long flat side surfaces and the wrapping layer 2 thereof are arranged in parallel, so that the stability of the support of the filler strip is ensured. The outer contour cross section of the wrapping layer is a rectangle with four corners being round corners.
An embodiment of the present invention provides a method for manufacturing a filler strip for a profile, including the following steps:
preparing a seal head 3 for later use, wherein the manufacture of the seal head 3 comprises the following steps:
baking the PA plastic raw material to 78-82 ℃ and keeping the temperature for 2-3 h;
putting the baked PA plastic into a screw barrel of an injection molding machine, and controlling the temperature of a feeding section, a compression section and a homogenization section of the screw barrel of the injection molding machine between 168-172 ℃, 168-172 ℃ and 163-167 ℃;
injecting the PA plastic discharged from the screw charging barrel into a seal head 3 mold for injection molding production, and cooling after injection molding to prepare the seal head 3 for later use;
carrying out rust removal and oil removal treatment on the framework 1; specifically, the framework 1 is placed into a rubber frame and immersed into a prepared rust remover for about 2-3min and shaken, and the framework is shaken up and down to ensure that each framework 1 is cleaned; taking out the framework 1, then immersing the framework 1 into a prepared oil removal agent for about 2-3min, and then taking out the framework 1 to naturally dry or spin-dry for about 18-25min, preferably 20 min; taking out the treated framework 1, spreading the framework on a net rack, naturally drying the framework or drying the framework by using an oven, preferably, when the framework is dried by using the oven, setting the temperature of the oven to be 100 ℃, and drying the framework for 30 min;
pouring glue into the treated framework 1 to uniformly wrap the glue on the inner surface and the outer surface of the framework 1, pouring out the redundant glue, spreading out and airing the framework 1, and sealing for later use, wherein the glue is bonding glue used for bonding aluminum alloy and rubber, so that the aluminum framework and the silicon rubber can not be separated after being encapsulated; the silicon rubber raw materials are put into a rubber mixing mill to be mixed, the temperature of a roller of the rubber mixing mill is controlled between 168-172 ℃, and a silicon rubber sheet with a preset thickness is repeatedly rolled out and cut into the shape and the size of a required product; or the required amount of the silicon rubber raw material can be confirmed by weighing;
cutting the framework 1 into a preset size, preferably, plugging and sealing two ends of the framework 1 cut into the preset size by using the end sockets 3; whether the two ends of the framework 1 are sealed by the end sockets 3 can be determined according to production requirements.
Mounting the filler strip mold on a vulcanizing machine, controlling the mold temperature of the filler strip mold to be between 190 ℃ and 250 ℃, opening the mold and spraying a release agent after the temperature meets the requirement;
putting one cut silicon rubber sheet into a filler strip die of a vulcanizing machine, putting the cut silicon rubber sheet into the framework 1, putting another silicon rubber sheet on the framework 1, closing the filler strip die for 3-4min, and vulcanizing to integrally wrap the framework 1 by the two silicon rubber sheets or integrally wrap the framework 1 and the two end sockets 3 by the two silicon rubber sheets to form an encapsulated filler strip;
demolding, taking out the encapsulated filler strip, and scraping off the edge material;
and then the encapsulated filler strip is put into a secondary vulcanization box, heated to the temperature of 190-210 ℃ and subjected to heat preservation vulcanization treatment for 1.5-2.5h2 to obtain the filler strip for the profile.
On the basis of the above embodiment of the manufacturing process, there is further provided a preferred embodiment, in the method for manufacturing the filler strip for the profile in this embodiment, specifically:
when the end socket is prepared, baking the PA plastic raw material to 80 ℃ and preserving heat for 2.5 hours; controlling the temperature of a feeding section of a screw charging barrel of the injection molding machine at 170 ℃, the temperature of a compression section at 170 ℃, the temperature of a homogenization section at 165 ℃, cooling for 65s after the injection molding is finished, and preparing the end enclosure 3.
The silicon rubber raw material is put into a rubber mixing mill, and the temperature of a roller of the rubber mixing mill is controlled at 170 ℃;
controlling the mold temperature of the filler strip mold at 230 ℃; and (3) when the rubber-coated filler strip is placed in a secondary vulcanization box, heating to 200 ℃ and carrying out heat preservation vulcanization treatment for 2 hours to obtain the filler strip for the section.
The following table shows the results of performance tests of the underwires produced by the production method according to the preferred embodiment described above:
from the above table, the filler strip manufactured by the manufacturing method of the invention is applicable to the environment temperature as high as 230 ℃, has stable structural strength, durable end enclosure and wrapping layer, and strong integral deformation resistance and pressure bearing capacity, and is particularly suitable for being used in the production and processing process of aluminum profiles.
It should be noted that the manufacturing process in the embodiment of the present invention may be applied to all technical solutions in the embodiment of preparing the backing strip for a profile, and specific implementation processes thereof may refer to relevant descriptions in the embodiment described above, and are not described herein again.
The filler strip adopts the aluminum alloy section bar framework 1 and the hollow structure, the structural strength and the weight of the filler strip are both considered, the support framework is ensured to be stable, meanwhile, the weight is not too heavy, and the wrapping layer 2 is arranged outside the framework 1, so that the filler strip is elastically contacted with the section bar when supporting the section bar, and the surface of the section bar cannot be damaged; the arrangement of the seal head 3 ensures that when the framework 1 is provided with the wrapping layer 2, wrapping materials cannot enter the hollow structure of the framework 1, the sealing and the smoothness of the two ends of the filler strip are ensured, and the attractiveness of the filler strip is improved; the periphery of head 3 with the surface of skeleton 1 flushes, consequently makes filler strip mould simple structure, the integrative parcel of the parcel layer 2 of being convenient for. The filler strip manufactured by the manufacturing method is suitable for being used in the section bar processing process, and has the advantages of wear resistance, good elasticity and excellent support property. In addition, the wrapping layer 2 is made of silicon rubber, even in a high-temperature environment of more than 200 ℃, the wrapping layer 2 of the silicon rubber can still keep certain flexibility, rebound resilience and surface hardness, the mechanical property is not obviously changed, and the wrapping layer has excellent insulating property, corona resistance and arc resistance. Skeleton 1 has set up two long flat sides, has ensured the stationarity that the filler strip supported, even the higher section bar can not take place to incline for the bearing stack.
It should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (1)
1. A manufacturing method of a filler strip for sectional materials is characterized by comprising the following steps:
the cushion strip comprises a framework (1) and a wrapping layer (2), wherein the framework (1) is in a long strip shape, a longitudinally-through hollow structure is arranged in the framework (1), and the wrapping layer (2) wraps the framework (1) integrally; the framework (1) is made of an aluminum alloy section; the wrapping layer (2) is made of a silicon rubber material;
a support strip (4) extending along the length direction is arranged in the hollow structure of the framework (1), and the support strip (4) is vertically intersected with the two long flat side surfaces at the same time; the number of the supporting bars (4) is N, N is more than or equal to 1, and the hollow structure of the framework (1) is divided into N +1 cavities by the N supporting bars (4);
the gasket strip further comprises end sockets (3), the end sockets (3) are respectively filled at two ends of the framework (1), the periphery of the end sockets (3) is flush with the outer surface of the framework, and the framework (1) and the end sockets (3) are integrally wrapped by the wrapping layer (2); the seal head (3) is made of PA plastic;
the seal head (3) comprises a seal plate (301) and a plug (302), the plug (302) is perpendicular to the inner side surface of the seal plate (301), and the plug (302) can be inserted into a cavity opening (101) at the end part of the hollow structure of the framework (1) to enable the inner side surface of the seal plate (301) to be attached to the end surfaces of the two ends of the framework (1);
the size and the number of the plugs (302) on the end socket (3) correspond to the size and the number of the cavity ports (101) corresponding to the same end of the cavity; the plug (302) can be tightly attached to the inner wall corresponding to the cavity opening (101) after being inserted into the cavity opening (101);
the manufacturing method comprises the following steps:
carrying out rust removal and oil removal treatment on the framework (1);
pouring glue into the treated framework (1) to enable the inner surface and the outer surface of the framework (1) to be uniformly coated with the glue, spreading out the framework (1), airing and sealing for later use;
the silicon rubber raw materials are put into a rubber mixing mill to be mixed, the temperature of a roller of the rubber mixing mill is controlled between 168-172 ℃, and a silicon rubber sheet with a preset thickness is repeatedly rolled out and cut into the shape and the size of a required product;
cutting the framework (1) into a preset size;
mounting the filler strip mold on a vulcanizing machine, controlling the mold temperature of the filler strip mold to be between 190 ℃ and 250 ℃, opening the mold and spraying a release agent after the temperature meets the requirement; putting one cut silicon rubber sheet into a filler strip die of a vulcanizing machine, putting the cut silicon rubber sheet into the framework (1), putting another silicon rubber sheet on the framework (1), closing the filler strip die for 3-4min, and vulcanizing to integrally wrap the framework (1) by the two silicon rubber sheets to form an encapsulated filler strip;
demolding, taking out the encapsulated filler strip, and scraping off the edge material;
then placing the encapsulated filler strip into a secondary vulcanization box, heating to 190-210 ℃, and carrying out heat preservation vulcanization treatment for 1.5-2.5h to obtain the filler strip for the profile;
the production method is characterized by further comprising the following steps of preparing a seal head (3) for standby, wherein the seal head (3) is used for sealing cavity openings (101) at two ends of the framework (1), and the production of the seal head (3) comprises the following steps:
baking the PA plastic raw material to 78-82 ℃ and keeping the temperature for 2-3 h;
putting the baked PA plastic into a screw barrel of an injection molding machine, and controlling the temperature of a feeding section, a compression section and a homogenization section of the screw barrel of the injection molding machine between 168-172 ℃, 168-172 ℃ and 163-167 ℃;
injecting the PA plastic discharged from the screw charging barrel into a seal head (3) mold for injection molding production, and cooling after injection molding to prepare the seal head (3);
in the manufacturing process, before the framework is placed into the filler strip die, the manufacturing method also comprises the step of plugging and sealing two ends of the framework (1) cut into a preset size by the end sockets (3);
in the vulcanization process, the framework (1) and the two seal heads (3) are wrapped by the two silicon rubber sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810651311.2A CN108908812B (en) | 2018-06-22 | 2018-06-22 | Filler strip for section bar and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810651311.2A CN108908812B (en) | 2018-06-22 | 2018-06-22 | Filler strip for section bar and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN108908812A CN108908812A (en) | 2018-11-30 |
| CN108908812B true CN108908812B (en) | 2020-07-10 |
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| CN201810651311.2A Active CN108908812B (en) | 2018-06-22 | 2018-06-22 | Filler strip for section bar and manufacturing method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112320066A (en) * | 2020-10-23 | 2021-02-05 | 佛山市南方橡塑有限公司 | Preparation method of partition strip |
| CN113402888A (en) * | 2021-06-25 | 2021-09-17 | 湖北迪曼特科技有限公司 | Shock insulator, rubber compound and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490310A (en) * | 2011-12-14 | 2012-06-13 | 昆山易昌泰电子有限公司 | Soft rubber molding process for metal shell surface |
| CN104552721A (en) * | 2013-10-22 | 2015-04-29 | 广东木森日用品有限公司 | Combined pressure-injection technology of silica gel and wood |
| CN207292972U (en) * | 2017-09-29 | 2018-05-01 | 四会市研创电器有限公司 | A kind of double wrapped filler strip |
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2018
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| CN102490310A (en) * | 2011-12-14 | 2012-06-13 | 昆山易昌泰电子有限公司 | Soft rubber molding process for metal shell surface |
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