CN115071116A - Core mould for basalt fiber composite pipe production - Google Patents
Core mould for basalt fiber composite pipe production Download PDFInfo
- Publication number
- CN115071116A CN115071116A CN202211009226.9A CN202211009226A CN115071116A CN 115071116 A CN115071116 A CN 115071116A CN 202211009226 A CN202211009226 A CN 202211009226A CN 115071116 A CN115071116 A CN 115071116A
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- Prior art keywords
- arc
- fiber composite
- basalt fiber
- transmission shaft
- composite pipe
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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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/82—Cores or mandrels
- B29C53/821—Mandrels especially adapted for winding and joining
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention provides a core mould for a basalt fiber composite pipe, which belongs to the technical field of basalt fiber composite pipe production equipment and comprises a central frame, two movable sleeves and supporting pieces, wherein the central frame is provided with a transmission shaft and guide rings symmetrically connected to two ends of the transmission shaft; each support piece comprises an arc-shaped plate and transmission rods vertically connected to two ends of the inner side surface of the arc-shaped plate, the middle parts of the transmission rods are connected with the guide rings in a sliding mode, and the outer ends of the transmission rods are hinged with the movable sleeve; the outer side surfaces of the arc plates can surround the core mould pipe main body through the rotation of the movable sleeve. Through the forward and reverse rotation of the movable sleeve on the transmission shaft, a plurality of arc plates can be expanded outwards to surround to be spliced into a core mould pipe main body and can be contracted inwards to separate so as to realize the demoulding of the basalt fiber composite pipe, the demoulding efficiency is high, the difficulty is low, the damage to the inner wall of the basalt fiber composite pipe is greatly reduced, and the quality of the pipe is ensured.
Description
Technical Field
The invention belongs to the technical field of production equipment of basalt fiber composite pipes, and particularly relates to a core mold for a basalt fiber composite pipe.
Background
The basalt fiber composite pipe is a novel high-tech composite pipe made of basalt fibers as a main material, and has excellent corrosion resistance and long service life; the strength is high, and the safety and reliability are realized; the weight is light, and the installation and the transportation are convenient; the construction period is short and the comprehensive investment is low; green and environment-friendly, etc.
The preparation process of the existing basalt fiber composite pipe comprises the following steps: and spraying a first gel coat on the surface of the core mould, simultaneously winding a surface felt to form a surface felt layer, winding a knitting felt on the surface felt layer to form a knitting felt layer, rolling to obtain an inner liner, winding and infiltrating basalt fibers of a second gel coat on the inner liner, and then performing curing and demoulding operations to obtain the basalt fiber composite pipe. The demolding is used as the last step of preparing the basalt fiber composite pipe, and the operation process of the demolding is related to the integrity of the inner wall of the basalt fiber composite pipe.
At present, the existing core mould is of an optical axis structure, so the demoulding operation is to directly pull out the core mould, but because the length of the basalt fiber composite pipe is longer, the bonding force between a surface felt layer and the core mould is larger, the direct pulling-out mode needs larger pulling force, and the demoulding is more difficult; in the process of drawing, the friction force between the surface of the core mold and the inner wall of the surface felt layer easily damages the inner wall structure of the basalt fiber composite pipe, and the quality of the pipe is affected.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a core mold for preparing a basalt fiber composite pipe, which aims to solve the problem that the existing basalt fiber composite pipe is difficult to demold.
In order to realize the purpose, the invention provides the following technical scheme:
a core mould for preparing basalt fiber composite pipes comprises:
the center frame is provided with a transmission shaft and guide rings symmetrically connected to two ends of the transmission shaft;
two movable sleeves are arranged and are respectively and rotatably connected to one end of the transmission shaft and positioned outside the guide ring; and
a plurality of supporting members evenly distributed around the circumference of the transmission shaft;
each support piece comprises an arc-shaped plate and transmission rods vertically connected to two ends of the inner side face of the arc-shaped plate, the middle of each transmission rod is connected with the guide ring in a sliding mode, and the outer end of each transmission rod is hinged to the movable sleeve; the outer side surfaces of the arc-shaped plates can surround the core mould pipe main body through the rotation of the movable sleeve.
In one embodiment of the present disclosure, the guide ring is provided with a plurality of pins corresponding to the transmission rod at equal intervals, and the pins are parallel to the transmission shaft;
the movable sleeve is provided with a plurality of second connectors corresponding to the pins at equal intervals along the outer circular surface of the movable sleeve;
the middle part of the transmission rod is provided with a notch, and the outer end of the transmission rod is provided with a second tongue block with a hole;
the notch is slidably sleeved on the pin column and can rotate around the pin column, and the second tongue block with the hole is hinged to the second connector.
In one embodiment of the present disclosure, a retainer ring having an outer diameter larger than the width of the notch is connected to an end of the pin away from the guide ring.
In one embodiment disclosed in the present application, both ends of the transmission shaft are provided with shaft sections with clamping grooves;
the shaft section is positioned on the outer side of the movable sleeve and used for mounting a dust cover;
a clamp spring is arranged in the clamping groove and used for axial limiting of the dustproof cover;
the middle part of the retainer ring is provided with a threaded hole;
the dustproof cover is connected with the threaded hole through a screw after being attached to the outer end face of the check ring.
In one embodiment disclosed herein, the drive shaft is of a hollow construction.
In one embodiment disclosed in the present application, a first sinking zone and a second sinking zone are arranged on the arc-shaped plate along the axial direction of the transmission shaft;
the first sinking area is positioned on the inner side surface of one long side edge of the arc-shaped plate and sinks towards the outer side surface of the arc-shaped plate;
the second sinking area is positioned on the outer side surface of the other long side edge of the arc-shaped plate and sinks towards the inner side surface of the arc-shaped plate;
when the arc plates are encircled, the first sinking area of one arc plate can be buckled with the second sinking area of the adjacent arc plate.
In one embodiment disclosed herein, further comprising a telescoping rod;
one end of the telescopic rod is hinged with the transmission shaft, and the other end of the telescopic rod is hinged with the inner side face of the arc-shaped plate.
In one embodiment disclosed in the present application, the middle of the transmission shaft is provided with a plurality of first connection joints at equal intervals around the outer circumferential surface thereof, and the inner side surface of the arc-shaped plate is provided with a first strip-hole tongue block back to back with the second subsidence area;
the outer end of the cylinder body of the telescopic rod is connected with a third tongue block with a hole, and the outer end of the piston rod is connected with a third connector;
the third tongue piece with hole is articulated with first connector, the third connector with first tongue piece with hole is articulated.
In an embodiment disclosed in the present application, the first connector, the second connector and the third connector are all in an H-shaped structure.
In one embodiment disclosed in the present application, the telescopic rods correspond to the supporting members one by one, and 6 telescopic rods are uniformly distributed around the circumference of the transmission shaft.
Compared with the prior art, the invention has the beneficial effects that:
1. through the forward and reverse rotation of the movable sleeve on the transmission shaft, a plurality of arc plates can be expanded outwards to form a core die tube main body in a splicing mode, and can be contracted inwards to be separated to realize the demolding of the basalt fiber composite tube, the demolding efficiency is high, the difficulty is low, the damage to the inner wall of the basalt fiber composite tube is greatly reduced, and the quality of the tube is ensured.
2. The movable sleeve and the transmission rod are covered by the dustproof cover, so that the movable parts of the movable sleeve and the transmission rod can be prevented from being polluted by dust, the long-term use of the movable sleeve and the transmission rod is facilitated, and the stability of the core mould is improved.
3. Through the first sinking area and the second sinking area, the outer side surface of the arc-shaped plate can be just encircled to form a cylinder shape, excessive rotation of the movable sleeve can be limited, and the cylindricity of the inner wall of the basalt fiber composite pipe prepared by the core mould is ensured.
4. The telescopic link that sets up is as the power supply, through stretching out and retracting of its piston rod, has realized that many arcs expand outward and surround and adduction separately to fixed the arc for the position of transmission shaft, effectively utilized the space between transmission shaft and the arc simultaneously, the telescopic link space occupies fewly promptly, can not hinder the winding of each layer material of basalt fiber composite pipe, is favorable to the preparation of basalt fiber composite pipe.
5. Every arc realizes enclosing and separately through the telescopic link that corresponds separately respectively, has further improved drawing of patterns efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic perspective view of the present invention during a winding operation;
FIG. 2 is a front view of the structure of FIG. 1;
FIG. 3 is a schematic perspective view of the present invention during a demolding operation;
FIG. 4 is a schematic front view of the structure of FIG. 3;
FIG. 5 is a perspective view of the center frame;
FIG. 6 is an enlarged view of a portion A of FIG. 5;
FIG. 7 is an enlarged view of a portion B of FIG. 5;
FIG. 8 is a perspective view of the condom;
FIG. 9 is a perspective view of the support member;
fig. 10 is a schematic perspective view of the telescopic rod.
The reference numerals are explained below:
100. the device comprises a center frame, 110, a transmission shaft, 111, a shaft section, 112, a first connecting head, 120, a guide ring, 121, a pin column, 122 and a retainer ring;
200. a movable sleeve 210 and a second connector;
300. the support part 310, the arc-shaped plate 311, the first sinking area 312, the second sinking area 313, the first tongue block with holes 320, the transmission rod 321, the notch 322 and the second tongue block with holes;
400. the telescopic rod, 410, a third tongue block with holes, 420 and a third connector.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing and simplifying the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present invention.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 10, the present invention provides a core mold for a basalt fiber composite pipe, including:
a center frame 100 having a driving shaft 110 and guide rings 120 symmetrically connected to both ends of the driving shaft 110;
two movable sleeves 200, which are respectively rotatably connected to one end of the transmission shaft 110 and are located outside the guide ring 120; and
a plurality of supporting members 300 uniformly distributed around the circumference of the driving shaft 110;
each support 300 comprises an arc-shaped plate 310 and a transmission rod 320 vertically connected to two ends of the inner side surface of the arc-shaped plate 310, the middle part of the transmission rod 320 is connected with the guide ring 120 in a sliding manner, and the outer end (i.e. the end far away from the arc-shaped plate 310) is hinged with the movable sleeve 200; the outer sides of the plurality of arc plates 310 can surround the core pipe main body by the rotation of the movable sleeve 200.
Specifically, the guide ring 120 is provided with a plurality of pins 121 at equal intervals corresponding to the transmission rod 320, and the pins 121 are parallel to the transmission shaft 110; the movable sleeve 200 is provided with a plurality of second connectors 210 (shown in detail in fig. 8) corresponding to the pins 121 at equal intervals along the outer circumferential surface thereof; the middle of the driving rod 320 is provided with a notch 321, the outer end is provided with a second tongue with hole 322 (shown in detail in fig. 9), the notch 321 is slidably sleeved on the pin 121 and can rotate around the pin 121, and the second tongue with hole 322 is hinged to the second connector 210.
Referring to fig. 1 to 4, when the basalt fiber composite pipe is manufactured, the movable sleeve 200 is rotated clockwise by a certain angle, so that each driving rod 320 is radially overlapped with the transmission shaft 110 (i.e., the driving rod 320 is perpendicular to the transmission shaft 110), the second connector 210 is opposite to the pin 121, and at this time, the outer sides of the plurality of arc-shaped plates 310 surround to form a cylinder, i.e., a core pipe body, for winding materials of each layer of the basalt fiber composite pipe; when the basalt fiber composite pipe is demoulded, the movable sleeve 200 is rotated anticlockwise for a certain angle, so that the second connector 210 drives the second tongue block 322 with holes to pull the transmission rod 320 to move, due to the limiting of the pin column 121, the transmission rod 320 slides on the pin column 121 through the notch 321 and rotates around the pin column 121, the arc plates 310 are turned over and approach the central transmission shaft 110 to be separated from the inner wall of the basalt fiber composite pipe, and then the pipe demoulding is completed. That is to say, through the forward and backward rotation of the movable sleeve 200 on the transmission shaft 110, the plurality of arc-shaped plates 310 can be outward expanded to surround to splice the core mold pipe main body and inward contracted to separate to realize the demolding of the basalt fiber composite pipe, the demolding efficiency is high, the demolding difficulty is low, the damage to the inner wall of the basalt fiber composite pipe is greatly reduced, and the quality of the pipe is ensured.
To prevent the driving rod 320 from falling off the pin 121, a retaining ring 122 (shown in detail in fig. 6) having an outer diameter larger than the width of the notch 321 is connected to one end of the pin 121 away from the guide ring 120.
Referring to fig. 6, both ends of the transmission shaft 110 are provided with shaft sections 111 with clamping grooves, the shaft sections 111 are located outside the movable sleeve 200 and used for installing dust covers (not shown in the figure), and clamping springs (not shown in the figure) are installed in the clamping grooves and used for axial limiting of the dust covers; threaded holes are formed in the middle of the check ring 122, and the dustproof cover is attached to the outer end face of the check ring 122 and then connected with the threaded holes through screws. That is, the movable sleeve 200 and the transmission rod 320 are covered by the dust cap, so that the movable parts of the movable sleeve and the transmission rod can be prevented from being polluted by dust, the long-term use of the movable sleeve and the transmission rod is facilitated, and the stability of the core mold is improved.
The transmission shaft 110 has a hollow structure. Thus, the hollow transmission shaft 110 can reduce the weight of the whole core mold, and is convenient to carry.
Referring to fig. 9, the arc plate 310 is provided with a first sinking section 311 and a second sinking section 312 along the axial direction of the transmission shaft 110; the first sinking region 311 is located on the inner side of one long side of the arc plate 310 and sinks towards the outer side of the arc plate 310, and the second sinking region 312 is located on the outer side of the other long side of the arc plate 310 and sinks towards the inner side of the arc plate 310; in the enclosing, the first sunken region 311 of one arc plate 310 can be buckled with the second sunken region 312 of the adjacent arc plate 310. That is, the outer side surface of the arc-shaped plate 310 can be exactly surrounded to form a cylinder shape through the first sinking zone 311 and the second sinking zone 312, and the excessive rotation of the movable sleeve 200 can be limited, so that the cylindricity of the inner wall of the basalt fiber composite pipe prepared by the core mold is ensured.
The core mold for the basalt fiber composite pipe further comprises a telescopic rod 400, wherein one end of the telescopic rod 400 is hinged to the transmission shaft 110, and the other end of the telescopic rod 400 is hinged to the inner side face of the arc-shaped plate 310.
Specifically, the middle of the transmission shaft 110 is provided with a plurality of first connecting joints 112 (shown in detail in fig. 7) at equal intervals around the outer circumferential surface thereof, and the inner side surface of the arc plate 310 is provided with a first holed tongue piece 313 (shown in detail in fig. 9) opposite to the second sinking zone 312; the outer end of the cylinder body (i.e. the end far away from the piston rod) of the telescopic rod 400 is connected with a third perforated tongue block 410, the outer end of the piston rod (i.e. the end far away from the cylinder body) is connected with a third connector 420 (shown in detail in fig. 10), the third perforated tongue block 410 is hinged with the first connector 112, and the third connector 420 is hinged with the first perforated tongue block 313. When the piston rod of the telescopic rod 400 extends out, the arc-shaped plates 310 are jacked open to be far away from the transmission shaft 110 and spread outwards, power is transmitted to the movable sleeve 200 through the transmission rod 320, so that the movable sleeve 200 rotates on the transmission shaft 110 to drive other arc-shaped plates 310 to be opened synchronously, and therefore the first sunken area 311 of one arc-shaped plate 310 can be buckled with the second sunken area 312 of the adjacent arc-shaped plate 310 to realize enclosure, and the arc-shaped plates 310 are jacked to prevent the arc-shaped plates 310 from loosening in the winding process of each layer of materials of the basalt fiber composite tube; on the contrary, when the piston rod of the telescopic rod 400 is retracted, the plurality of arc-shaped plates 310 are drawn back to approach the transmission shaft 110 and are separated inwards to be separated from the inner wall of the basalt fiber composite tube, so as to realize demoulding. That is to say, the telescopic link 400 is used as a power source, and the extension and retraction of the piston rod of the telescopic link realize the outward expansion surrounding and inward contraction separating of the plurality of arc-shaped plates 310, fix the position of the arc-shaped plates 310 relative to the transmission shaft 110, and effectively utilize the space between the transmission shaft 110 and the arc-shaped plates 310, i.e. the telescopic link 400 occupies less space, does not hinder the winding of each layer of material of the basalt fiber composite pipe, and is beneficial to the preparation of the basalt fiber composite pipe.
The first connector 112, the second connector 210 and the third connector 420 are all H-shaped (i.e. formed by two symmetrical support blocks and a short shaft connected between the two support blocks, and the shape is similar to a U-shaped buckle).
In this embodiment, the extension rods 400 correspond to the support members 300 one by one, and 6 members are uniformly distributed around the circumference of the transmission shaft 110. That is, each arc-shaped plate 310 is surrounded and separated by the corresponding telescopic rod 400, so that the demolding efficiency is further improved.
The telescopic rod 400 may be driven by electricity, hydraulic or pneumatic, and is not limited to this.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.
Claims (10)
1. The utility model provides a basalt fiber composite pipe prepares mandrel which characterized in that includes:
the center frame is provided with a transmission shaft and guide rings symmetrically connected to two ends of the transmission shaft;
two movable sleeves are arranged and are respectively and rotatably connected to one end of the transmission shaft and positioned outside the guide ring; and
a plurality of supporting members evenly distributed around the circumference of the transmission shaft;
each support piece comprises an arc-shaped plate and transmission rods vertically connected to two ends of the inner side face of the arc-shaped plate, the middle of each transmission rod is connected with the guide ring in a sliding mode, and the outer end of each transmission rod is hinged to the movable sleeve; the outer side surfaces of the arc-shaped plates can surround the core mould pipe main body through the rotation of the movable sleeve.
2. The basalt fiber composite pipe preparation core mold according to claim 1, wherein:
a plurality of pins corresponding to the transmission rod are arranged on the guide ring at equal intervals, and the pins are parallel to the transmission shaft;
the movable sleeve is provided with a plurality of second connectors corresponding to the pins at equal intervals along the outer circular surface of the movable sleeve;
the middle part of the transmission rod is provided with a notch, and the outer end of the transmission rod is provided with a second tongue block with a hole;
the notch is slidably sleeved on the pin column and can rotate around the pin column, and the second tongue block with the hole is hinged to the second connector.
3. The basalt fiber composite pipe manufacturing mandrel of claim 2, wherein a retaining ring having an outer diameter larger than the width of the notch is connected to one end of the pin, which is away from the guide ring.
4. The basalt fiber composite pipe production core mold according to claim 3, wherein:
both ends of the transmission shaft are provided with shaft sections with clamping grooves;
the shaft section is positioned outside the movable sleeve and used for mounting a dust cover;
a clamp spring is arranged in the clamping groove and used for axial limiting of the dustproof cover;
the middle part of the retainer ring is provided with a threaded hole;
and the dust cover is attached to the outer end face of the check ring and then connected with the threaded hole through a screw.
5. The core mold for basalt fiber composite pipe according to claim 4, wherein the transmission shaft has a hollow structure.
6. The basalt fiber composite pipe preparation mandrel according to any one of claims 2 to 5, wherein:
a first sinking area and a second sinking area are arranged on the arc-shaped plate along the axial direction of the transmission shaft;
the first sinking area is positioned on the inner side surface of one long side edge of the arc-shaped plate and sinks towards the outer side surface of the arc-shaped plate;
the second sinking area is positioned on the outer side surface of the other long side edge of the arc-shaped plate and sinks towards the inner side surface of the arc-shaped plate;
when the arc plates are encircled, the first sinking area of one arc plate can be buckled with the second sinking area of the adjacent arc plate.
7. The basalt fiber composite pipe production core mold according to claim 6, wherein:
the telescopic rod is further included;
one end of the telescopic rod is hinged with the transmission shaft, and the other end of the telescopic rod is hinged with the inner side face of the arc-shaped plate.
8. The basalt fiber composite pipe production core mold according to claim 7, wherein:
a plurality of first connecting joints are arranged in the middle of the transmission shaft at equal intervals around the outer circular surface of the transmission shaft, and first perforated tongue blocks back to the second sinking region are arranged on the inner side surface of the arc-shaped plate;
the outer end of the cylinder body of the telescopic rod is connected with a third tongue block with a hole, and the outer end of the piston rod is connected with a third connector;
the third tongue piece with hole is articulated with first connector, the third connector with first tongue piece with hole is articulated.
9. The core mold for basalt fiber composite pipe according to claim 8, wherein the first connector, the second connector, and the third connector are all H-shaped.
10. The core mold for the basalt fiber composite pipe according to any one of claims 7 to 9, wherein the telescopic rods correspond to the support members one by one, and 6 pieces of the telescopic rods are uniformly distributed around the circumference of the transmission shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211009226.9A CN115071116B (en) | 2022-08-23 | 2022-08-23 | Core mould for basalt fiber composite pipe production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211009226.9A CN115071116B (en) | 2022-08-23 | 2022-08-23 | Core mould for basalt fiber composite pipe production |
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| Publication Number | Publication Date |
|---|---|
| CN115071116A true CN115071116A (en) | 2022-09-20 |
| CN115071116B CN115071116B (en) | 2022-11-15 |
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